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annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 12295:e16f396f04a1

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6948911 snapshot deletion can induce unsatisfiable allocations in txg sync
author George Wilson <George.Wilson@Sun.COM>
date Mon, 03 May 2010 11:16:14 -0700
parents 3655f38d3bea
children 7cf402a7f374
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21 /*
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22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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23 */
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24
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25 #include <sys/dmu_objset.h>
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26 #include <sys/dsl_dataset.h>
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27 #include <sys/dsl_dir.h>
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28 #include <sys/dsl_prop.h>
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29 #include <sys/dsl_synctask.h>
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30 #include <sys/dmu_traverse.h>
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31 #include <sys/dmu_tx.h>
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32 #include <sys/arc.h>
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33 #include <sys/zio.h>
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34 #include <sys/zap.h>
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35 #include <sys/unique.h>
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36 #include <sys/zfs_context.h>
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37 #include <sys/zfs_ioctl.h>
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38 #include <sys/spa.h>
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39 #include <sys/zfs_znode.h>
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40 #include <sys/zvol.h>
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41
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42 static char *dsl_reaper = "the grim reaper";
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43
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44 static dsl_checkfunc_t dsl_dataset_destroy_begin_check;
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45 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync;
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46 static dsl_syncfunc_t dsl_dataset_set_reservation_sync;
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47
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48 #define DS_REF_MAX (1ULL << 62)
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49
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50 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE
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51
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52 #define DSL_DATASET_IS_DESTROYED(ds) ((ds)->ds_owner == dsl_reaper)
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53
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54
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55 /*
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56 * Figure out how much of this delta should be propogated to the dsl_dir
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57 * layer. If there's a refreservation, that space has already been
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58 * partially accounted for in our ancestors.
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59 */
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60 static int64_t
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61 parent_delta(dsl_dataset_t *ds, int64_t delta)
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62 {
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63 uint64_t old_bytes, new_bytes;
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64
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65 if (ds->ds_reserved == 0)
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66 return (delta);
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67
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68 old_bytes = MAX(ds->ds_phys->ds_unique_bytes, ds->ds_reserved);
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69 new_bytes = MAX(ds->ds_phys->ds_unique_bytes + delta, ds->ds_reserved);
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70
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71 ASSERT3U(ABS((int64_t)(new_bytes - old_bytes)), <=, ABS(delta));
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72 return (new_bytes - old_bytes);
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73 }
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74
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75 void
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76 dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx)
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77 {
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78 int used = bp_get_dsize_sync(tx->tx_pool->dp_spa, bp);
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79 int compressed = BP_GET_PSIZE(bp);
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80 int uncompressed = BP_GET_UCSIZE(bp);
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81 int64_t delta;
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82
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83 dprintf_bp(bp, "born, ds=%p\n", ds);
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84
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85 ASSERT(dmu_tx_is_syncing(tx));
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86 /* It could have been compressed away to nothing */
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87 if (BP_IS_HOLE(bp))
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88 return;
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89 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE);
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90 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES);
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91 if (ds == NULL) {
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92 /*
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93 * Account for the meta-objset space in its placeholder
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94 * dsl_dir.
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95 */
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96 ASSERT3U(compressed, ==, uncompressed); /* it's all metadata */
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97 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
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98 used, compressed, uncompressed, tx);
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99 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
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100 return;
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101 }
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102 dmu_buf_will_dirty(ds->ds_dbuf, tx);
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103 mutex_enter(&ds->ds_dir->dd_lock);
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104 mutex_enter(&ds->ds_lock);
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105 delta = parent_delta(ds, used);
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106 ds->ds_phys->ds_used_bytes += used;
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107 ds->ds_phys->ds_compressed_bytes += compressed;
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108 ds->ds_phys->ds_uncompressed_bytes += uncompressed;
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109 ds->ds_phys->ds_unique_bytes += used;
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110 mutex_exit(&ds->ds_lock);
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111 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, delta,
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112 compressed, uncompressed, tx);
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113 dsl_dir_transfer_space(ds->ds_dir, used - delta,
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114 DD_USED_REFRSRV, DD_USED_HEAD, tx);
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115 mutex_exit(&ds->ds_dir->dd_lock);
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116 }
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117
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118 int
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119 dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,
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120 boolean_t async)
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121 {
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122 if (BP_IS_HOLE(bp))
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123 return (0);
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124
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125 ASSERT(dmu_tx_is_syncing(tx));
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126 ASSERT(bp->blk_birth <= tx->tx_txg);
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127
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128 int used = bp_get_dsize_sync(tx->tx_pool->dp_spa, bp);
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129 int compressed = BP_GET_PSIZE(bp);
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130 int uncompressed = BP_GET_UCSIZE(bp);
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131
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132 ASSERT(used > 0);
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133 if (ds == NULL) {
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134 /*
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135 * Account for the meta-objset space in its placeholder
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136 * dataset.
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137 */
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138 dsl_free(tx->tx_pool, tx->tx_txg, bp);
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139
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140 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
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141 -used, -compressed, -uncompressed, tx);
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142 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
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143 return (used);
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144 }
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145 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool);
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146
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147 ASSERT(!dsl_dataset_is_snapshot(ds));
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148 dmu_buf_will_dirty(ds->ds_dbuf, tx);
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149
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150 if (bp->blk_birth > ds->ds_phys->ds_prev_snap_txg) {
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151 int64_t delta;
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152
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153 dprintf_bp(bp, "freeing: %s", "");
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154 dsl_free(tx->tx_pool, tx->tx_txg, bp);
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155
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156 mutex_enter(&ds->ds_dir->dd_lock);
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157 mutex_enter(&ds->ds_lock);
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158 ASSERT(ds->ds_phys->ds_unique_bytes >= used ||
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159 !DS_UNIQUE_IS_ACCURATE(ds));
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160 delta = parent_delta(ds, -used);
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161 ds->ds_phys->ds_unique_bytes -= used;
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162 mutex_exit(&ds->ds_lock);
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163 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD,
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
164 delta, -compressed, -uncompressed, tx);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
165 dsl_dir_transfer_space(ds->ds_dir, -used - delta,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
166 DD_USED_REFRSRV, DD_USED_HEAD, tx);
7595
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
167 mutex_exit(&ds->ds_dir->dd_lock);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
168 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
169 dprintf_bp(bp, "putting on dead list: %s", "");
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
170 if (async) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
171 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
172 * We are here as part of zio's write done callback,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
173 * which means we're a zio interrupt thread. We can't
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
174 * call bplist_enqueue() now because it may block
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
175 * waiting for I/O. Instead, put bp on the deferred
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
176 * queue and let dsl_pool_sync() finish the job.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
177 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
178 bplist_enqueue_deferred(&ds->ds_deadlist, bp);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
179 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
180 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, bp, tx));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
181 }
5712
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
182 ASSERT3U(ds->ds_prev->ds_object, ==,
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
183 ds->ds_phys->ds_prev_snap_obj);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
184 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
185 /* if (bp->blk_birth > prev prev snap txg) prev unique += bs */
5712
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
186 if (ds->ds_prev->ds_phys->ds_next_snap_obj ==
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
187 ds->ds_object && bp->blk_birth >
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
188 ds->ds_prev->ds_phys->ds_prev_snap_txg) {
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
189 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
190 mutex_enter(&ds->ds_prev->ds_lock);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
191 ds->ds_prev->ds_phys->ds_unique_bytes += used;
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
192 mutex_exit(&ds->ds_prev->ds_lock);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
193 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
194 if (bp->blk_birth > ds->ds_origin_txg) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
195 dsl_dir_transfer_space(ds->ds_dir, used,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
196 DD_USED_HEAD, DD_USED_SNAP, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
197 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
198 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
199 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
200 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
201 ds->ds_phys->ds_used_bytes -= used;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
202 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
203 ds->ds_phys->ds_compressed_bytes -= compressed;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
204 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
205 ds->ds_phys->ds_uncompressed_bytes -= uncompressed;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
206 mutex_exit(&ds->ds_lock);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
207
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
208 return (used);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
209 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
210
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
211 uint64_t
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
212 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
213 {
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
214 uint64_t trysnap = 0;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
215
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
216 if (ds == NULL)
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
217 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
218 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
219 * The snapshot creation could fail, but that would cause an
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
220 * incorrect FALSE return, which would only result in an
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
221 * overestimation of the amount of space that an operation would
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
222 * consume, which is OK.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
223 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
224 * There's also a small window where we could miss a pending
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
225 * snapshot, because we could set the sync task in the quiescing
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
226 * phase. So this should only be used as a guess.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
227 */
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
228 if (ds->ds_trysnap_txg >
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
229 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa))
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
230 trysnap = ds->ds_trysnap_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
231 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap));
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
232 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
233
9653
a70048a304d1 6664765 Unable to remove files when using fat-zap and quota exceeded on ZFS filesystem
Sanjeev Bagewadi <Sanjeev.Bagewadi@Sun.COM>
parents: 9396
diff changeset
234 boolean_t
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
235 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
236 {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
237 return (blk_birth > dsl_dataset_prev_snap_txg(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
238 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
239
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
240 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
241 static void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
242 dsl_dataset_evict(dmu_buf_t *db, void *dsv)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
243 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
244 dsl_dataset_t *ds = dsv;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
245
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
246 ASSERT(ds->ds_owner == NULL || DSL_DATASET_IS_DESTROYED(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
247
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
248 unique_remove(ds->ds_fsid_guid);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
249
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
250 if (ds->ds_objset != NULL)
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
251 dmu_objset_evict(ds->ds_objset);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
252
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
253 if (ds->ds_prev) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
254 dsl_dataset_drop_ref(ds->ds_prev, ds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
255 ds->ds_prev = NULL;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
256 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
257
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
258 bplist_close(&ds->ds_deadlist);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
259 if (ds->ds_dir)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
260 dsl_dir_close(ds->ds_dir, ds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
261
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
262 ASSERT(!list_link_active(&ds->ds_synced_link));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
263
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
264 mutex_destroy(&ds->ds_lock);
10204
83c3a84aecef 6760420 zfs unmount -f causes recv to fail
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10002
diff changeset
265 mutex_destroy(&ds->ds_recvlock);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
266 mutex_destroy(&ds->ds_opening_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
267 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
268 cv_destroy(&ds->ds_exclusive_cv);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
269 bplist_fini(&ds->ds_deadlist);
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
270
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
271 kmem_free(ds, sizeof (dsl_dataset_t));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
272 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
273
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
274 static int
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
275 dsl_dataset_get_snapname(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
276 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
277 dsl_dataset_phys_t *headphys;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
278 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
279 dmu_buf_t *headdbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
280 dsl_pool_t *dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
281 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
282
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
283 if (ds->ds_snapname[0])
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
284 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
285 if (ds->ds_phys->ds_next_snap_obj == 0)
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
286 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
287
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
288 err = dmu_bonus_hold(mos, ds->ds_dir->dd_phys->dd_head_dataset_obj,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
289 FTAG, &headdbuf);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
290 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
291 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
292 headphys = headdbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
293 err = zap_value_search(dp->dp_meta_objset,
4577
ed36b0e652bc PSARC/2007/328 zfs upgrade
ahrens
parents: 4569
diff changeset
294 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
295 dmu_buf_rele(headdbuf, FTAG);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
296 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
297 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
298
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
299 static int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
300 dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, uint64_t *value)
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
301 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
302 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
303 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj;
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
304 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
305 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
306
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
307 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET)
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
308 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
309 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
310 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
311
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
312 err = zap_lookup_norm(mos, snapobj, name, 8, 1,
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
313 value, mt, NULL, 0, NULL);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
314 if (err == ENOTSUP && mt == MT_FIRST)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
315 err = zap_lookup(mos, snapobj, name, 8, 1, value);
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
316 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
317 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
318
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
319 static int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
320 dsl_dataset_snap_remove(dsl_dataset_t *ds, char *name, dmu_tx_t *tx)
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
321 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
322 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
323 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj;
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
324 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
325 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
326
10373
bcf97ee54990 6395956 snapshot dir needs real c/mtime
Chris Kirby <chris.kirby@sun.com>
parents: 10342
diff changeset
327 dsl_dir_snap_cmtime_update(ds->ds_dir);
bcf97ee54990 6395956 snapshot dir needs real c/mtime
Chris Kirby <chris.kirby@sun.com>
parents: 10342
diff changeset
328
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
329 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET)
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
330 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
331 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
332 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
333
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
334 err = zap_remove_norm(mos, snapobj, name, mt, tx);
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
335 if (err == ENOTSUP && mt == MT_FIRST)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
336 err = zap_remove(mos, snapobj, name, tx);
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
337 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
338 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
339
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
340 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
341 dsl_dataset_get_ref(dsl_pool_t *dp, uint64_t dsobj, void *tag,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
342 dsl_dataset_t **dsp)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
343 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
344 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
345 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
346 dsl_dataset_t *ds;
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
347 int err;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
348
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
349 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) ||
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
350 dsl_pool_sync_context(dp));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
351
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
352 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
353 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
354 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
355 ds = dmu_buf_get_user(dbuf);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
356 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
357 dsl_dataset_t *winner;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
358
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
359 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
360 ds->ds_dbuf = dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
361 ds->ds_object = dsobj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
362 ds->ds_phys = dbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
363
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
364 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL);
10204
83c3a84aecef 6760420 zfs unmount -f causes recv to fail
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10002
diff changeset
365 mutex_init(&ds->ds_recvlock, NULL, MUTEX_DEFAULT, NULL);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
366 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
367 rw_init(&ds->ds_rwlock, 0, 0, 0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
368 cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
369 bplist_init(&ds->ds_deadlist);
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
370
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
371 err = bplist_open(&ds->ds_deadlist,
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
372 mos, ds->ds_phys->ds_deadlist_obj);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
373 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
374 err = dsl_dir_open_obj(dp,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
375 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
376 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
377 if (err) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
378 /*
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
379 * we don't really need to close the blist if we
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
380 * just opened it.
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
381 */
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
382 mutex_destroy(&ds->ds_lock);
10204
83c3a84aecef 6760420 zfs unmount -f causes recv to fail
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10002
diff changeset
383 mutex_destroy(&ds->ds_recvlock);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
384 mutex_destroy(&ds->ds_opening_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
385 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
386 cv_destroy(&ds->ds_exclusive_cv);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
387 bplist_fini(&ds->ds_deadlist);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
388 kmem_free(ds, sizeof (dsl_dataset_t));
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
389 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
390 return (err);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
391 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
392
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
393 if (!dsl_dataset_is_snapshot(ds)) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
394 ds->ds_snapname[0] = '\0';
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
395 if (ds->ds_phys->ds_prev_snap_obj) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
396 err = dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
397 ds->ds_phys->ds_prev_snap_obj,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
398 ds, &ds->ds_prev);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
399 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
400
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
401 if (err == 0 && dsl_dir_is_clone(ds->ds_dir)) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
402 dsl_dataset_t *origin;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
403
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
404 err = dsl_dataset_hold_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
405 ds->ds_dir->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
406 FTAG, &origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
407 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
408 ds->ds_origin_txg =
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
409 origin->ds_phys->ds_creation_txg;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
410 dsl_dataset_rele(origin, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
411 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
412 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
413 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
414 if (zfs_flags & ZFS_DEBUG_SNAPNAMES)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
415 err = dsl_dataset_get_snapname(ds);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
416 if (err == 0 && ds->ds_phys->ds_userrefs_obj != 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
417 err = zap_count(
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
418 ds->ds_dir->dd_pool->dp_meta_objset,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
419 ds->ds_phys->ds_userrefs_obj,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
420 &ds->ds_userrefs);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
421 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
422 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
423
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
424 if (err == 0 && !dsl_dataset_is_snapshot(ds)) {
5569
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
425 /*
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
426 * In sync context, we're called with either no lock
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
427 * or with the write lock. If we're not syncing,
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
428 * we're always called with the read lock held.
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
429 */
5475
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
430 boolean_t need_lock =
5569
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
431 !RW_WRITE_HELD(&dp->dp_config_rwlock) &&
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
432 dsl_pool_sync_context(dp);
5475
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
433
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
434 if (need_lock)
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
435 rw_enter(&dp->dp_config_rwlock, RW_READER);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
436
7265
cc18862247da PSARC/2008/483 ZFS clone -o
ahrens
parents: 7237
diff changeset
437 err = dsl_prop_get_ds(ds,
5475
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
438 "refreservation", sizeof (uint64_t), 1,
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
439 &ds->ds_reserved, NULL);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
440 if (err == 0) {
7265
cc18862247da PSARC/2008/483 ZFS clone -o
ahrens
parents: 7237
diff changeset
441 err = dsl_prop_get_ds(ds,
5475
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
442 "refquota", sizeof (uint64_t), 1,
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
443 &ds->ds_quota, NULL);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
444 }
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
445
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
446 if (need_lock)
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
447 rw_exit(&dp->dp_config_rwlock);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
448 } else {
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
449 ds->ds_reserved = ds->ds_quota = 0;
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
450 }
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
451
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
452 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
453 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
454 dsl_dataset_evict);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
455 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
456 if (err || winner) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
457 bplist_close(&ds->ds_deadlist);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
458 if (ds->ds_prev)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
459 dsl_dataset_drop_ref(ds->ds_prev, ds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
460 dsl_dir_close(ds->ds_dir, ds);
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
461 mutex_destroy(&ds->ds_lock);
10204
83c3a84aecef 6760420 zfs unmount -f causes recv to fail
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10002
diff changeset
462 mutex_destroy(&ds->ds_recvlock);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
463 mutex_destroy(&ds->ds_opening_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
464 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
465 cv_destroy(&ds->ds_exclusive_cv);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
466 bplist_fini(&ds->ds_deadlist);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
467 kmem_free(ds, sizeof (dsl_dataset_t));
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
468 if (err) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
469 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
470 return (err);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
471 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
472 ds = winner;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
473 } else {
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
474 ds->ds_fsid_guid =
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
475 unique_insert(ds->ds_phys->ds_fsid_guid);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
476 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
477 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
478 ASSERT3P(ds->ds_dbuf, ==, dbuf);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
479 ASSERT3P(ds->ds_phys, ==, dbuf->db_data);
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
480 ASSERT(ds->ds_phys->ds_prev_snap_obj != 0 ||
7061
524fec1acf1c 6723703 zpool upgrade -> assertion failed: ds->ds_phys->ds_prev_snap_obj != 0 || ...
ahrens
parents: 7046
diff changeset
481 spa_version(dp->dp_spa) < SPA_VERSION_ORIGIN ||
7077
a63bdc0b8352 6724675 assertion failed in dsl_dataset_get_ref(): ds->ds_phys->ds_prev_snap_obj != 0 ...
ahrens
parents: 7061
diff changeset
482 dp->dp_origin_snap == NULL || ds == dp->dp_origin_snap);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
483 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
484 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
485 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
486 dmu_buf_rele(ds->ds_dbuf, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
487 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
488 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
489 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
490 *dsp = ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
491 return (0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
492 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
493
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
494 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
495 dsl_dataset_hold_ref(dsl_dataset_t *ds, void *tag)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
496 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
497 dsl_pool_t *dp = ds->ds_dir->dd_pool;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
498
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
499 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
500 * In syncing context we don't want the rwlock lock: there
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
501 * may be an existing writer waiting for sync phase to
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
502 * finish. We don't need to worry about such writers, since
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
503 * sync phase is single-threaded, so the writer can't be
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
504 * doing anything while we are active.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
505 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
506 if (dsl_pool_sync_context(dp)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
507 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
508 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
509 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
510
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
511 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
512 * Normal users will hold the ds_rwlock as a READER until they
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
513 * are finished (i.e., call dsl_dataset_rele()). "Owners" will
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
514 * drop their READER lock after they set the ds_owner field.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
515 *
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
516 * If the dataset is being destroyed, the destroy thread will
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
517 * obtain a WRITER lock for exclusive access after it's done its
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
518 * open-context work and then change the ds_owner to
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
519 * dsl_reaper once destruction is assured. So threads
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
520 * may block here temporarily, until the "destructability" of
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
521 * the dataset is determined.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
522 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
523 ASSERT(!RW_WRITE_HELD(&dp->dp_config_rwlock));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
524 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
525 while (!rw_tryenter(&ds->ds_rwlock, RW_READER)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
526 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
527 cv_wait(&ds->ds_exclusive_cv, &ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
528 if (DSL_DATASET_IS_DESTROYED(ds)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
529 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
530 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
531 rw_enter(&dp->dp_config_rwlock, RW_READER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
532 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
533 }
11546
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
534 /*
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
535 * The dp_config_rwlock lives above the ds_lock. And
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
536 * we need to check DSL_DATASET_IS_DESTROYED() while
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
537 * holding the ds_lock, so we have to drop and reacquire
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
538 * the ds_lock here.
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
539 */
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
540 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
541 rw_enter(&dp->dp_config_rwlock, RW_READER);
11546
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
542 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
543 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
544 mutex_exit(&ds->ds_lock);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
545 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
546 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
547
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
548 int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
549 dsl_dataset_hold_obj(dsl_pool_t *dp, uint64_t dsobj, void *tag,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
550 dsl_dataset_t **dsp)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
551 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
552 int err = dsl_dataset_get_ref(dp, dsobj, tag, dsp);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
553
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
554 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
555 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
556 return (dsl_dataset_hold_ref(*dsp, tag));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
557 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
558
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
559 int
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
560 dsl_dataset_own_obj(dsl_pool_t *dp, uint64_t dsobj, boolean_t inconsistentok,
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
561 void *tag, dsl_dataset_t **dsp)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
562 {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
563 int err = dsl_dataset_hold_obj(dp, dsobj, tag, dsp);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
564 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
565 return (err);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
566 if (!dsl_dataset_tryown(*dsp, inconsistentok, tag)) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
567 dsl_dataset_rele(*dsp, tag);
8779
f164e0e90508 6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents: 8746
diff changeset
568 *dsp = NULL;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
569 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
570 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
571 return (0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
572 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
573
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
574 int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
575 dsl_dataset_hold(const char *name, void *tag, dsl_dataset_t **dsp)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
576 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
577 dsl_dir_t *dd;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
578 dsl_pool_t *dp;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
579 const char *snapname;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
580 uint64_t obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
581 int err = 0;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
582
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
583 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
584 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
585 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
586
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
587 dp = dd->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
588 obj = dd->dd_phys->dd_head_dataset_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
589 rw_enter(&dp->dp_config_rwlock, RW_READER);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
590 if (obj)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
591 err = dsl_dataset_get_ref(dp, obj, tag, dsp);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
592 else
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
593 err = ENOENT;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
594 if (err)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
595 goto out;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
596
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
597 err = dsl_dataset_hold_ref(*dsp, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
598
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
599 /* we may be looking for a snapshot */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
600 if (err == 0 && snapname != NULL) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
601 dsl_dataset_t *ds = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
602
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
603 if (*snapname++ != '@') {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
604 dsl_dataset_rele(*dsp, tag);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
605 err = ENOENT;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
606 goto out;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
607 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
608
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
609 dprintf("looking for snapshot '%s'\n", snapname);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
610 err = dsl_dataset_snap_lookup(*dsp, snapname, &obj);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
611 if (err == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
612 err = dsl_dataset_get_ref(dp, obj, tag, &ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
613 dsl_dataset_rele(*dsp, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
614
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
615 ASSERT3U((err == 0), ==, (ds != NULL));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
616
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
617 if (ds) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
618 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
619 if (ds->ds_snapname[0] == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
620 (void) strlcpy(ds->ds_snapname, snapname,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
621 sizeof (ds->ds_snapname));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
622 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
623 err = dsl_dataset_hold_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
624 *dsp = err ? NULL : ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
625 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
626 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
627 out:
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
628 rw_exit(&dp->dp_config_rwlock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
629 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
630 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
631 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
632
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
633 int
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
634 dsl_dataset_own(const char *name, boolean_t inconsistentok,
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
635 void *tag, dsl_dataset_t **dsp)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
636 {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
637 int err = dsl_dataset_hold(name, tag, dsp);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
638 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
639 return (err);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
640 if (!dsl_dataset_tryown(*dsp, inconsistentok, tag)) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
641 dsl_dataset_rele(*dsp, tag);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
642 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
643 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
644 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
645 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
646
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
647 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
648 dsl_dataset_name(dsl_dataset_t *ds, char *name)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
649 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
650 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
651 (void) strcpy(name, "mos");
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
652 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
653 dsl_dir_name(ds->ds_dir, name);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
654 VERIFY(0 == dsl_dataset_get_snapname(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
655 if (ds->ds_snapname[0]) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
656 (void) strcat(name, "@");
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
657 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
658 * We use a "recursive" mutex so that we
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
659 * can call dprintf_ds() with ds_lock held.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
660 */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
661 if (!MUTEX_HELD(&ds->ds_lock)) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
662 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
663 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
664 mutex_exit(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
665 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
666 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
667 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
668 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
669 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
670 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
671
3978
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
672 static int
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
673 dsl_dataset_namelen(dsl_dataset_t *ds)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
674 {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
675 int result;
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
676
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
677 if (ds == NULL) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
678 result = 3; /* "mos" */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
679 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
680 result = dsl_dir_namelen(ds->ds_dir);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
681 VERIFY(0 == dsl_dataset_get_snapname(ds));
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
682 if (ds->ds_snapname[0]) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
683 ++result; /* adding one for the @-sign */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
684 if (!MUTEX_HELD(&ds->ds_lock)) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
685 mutex_enter(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
686 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
687 mutex_exit(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
688 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
689 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
690 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
691 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
692 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
693
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
694 return (result);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
695 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
696
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
697 void
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
698 dsl_dataset_drop_ref(dsl_dataset_t *ds, void *tag)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
699 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
700 dmu_buf_rele(ds->ds_dbuf, tag);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
701 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
702
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
703 void
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
704 dsl_dataset_rele(dsl_dataset_t *ds, void *tag)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
705 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
706 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
707 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
708 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
709 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
710 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
711
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
712 void
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
713 dsl_dataset_disown(dsl_dataset_t *ds, void *tag)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
714 {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
715 ASSERT((ds->ds_owner == tag && ds->ds_dbuf) ||
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
716 (DSL_DATASET_IS_DESTROYED(ds) && ds->ds_dbuf == NULL));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
717
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
718 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
719 ds->ds_owner = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
720 if (RW_WRITE_HELD(&ds->ds_rwlock)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
721 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
722 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
723 }
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
724 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
725 if (ds->ds_dbuf)
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
726 dsl_dataset_drop_ref(ds, tag);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
727 else
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
728 dsl_dataset_evict(ds->ds_dbuf, ds);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
729 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
730
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
731 boolean_t
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
732 dsl_dataset_tryown(dsl_dataset_t *ds, boolean_t inconsistentok, void *tag)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
733 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
734 boolean_t gotit = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
735
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
736 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
737 if (ds->ds_owner == NULL &&
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
738 (!DS_IS_INCONSISTENT(ds) || inconsistentok)) {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
739 ds->ds_owner = tag;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
740 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool))
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
741 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
742 gotit = TRUE;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
743 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
744 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
745 return (gotit);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
746 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
747
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
748 void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
749 dsl_dataset_make_exclusive(dsl_dataset_t *ds, void *owner)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
750 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
751 ASSERT3P(owner, ==, ds->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
752 if (!RW_WRITE_HELD(&ds->ds_rwlock))
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
753 rw_enter(&ds->ds_rwlock, RW_WRITER);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
754 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
755
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
756 uint64_t
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
757 dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
758 uint64_t flags, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
759 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
760 dsl_pool_t *dp = dd->dd_pool;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
761 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
762 dsl_dataset_phys_t *dsphys;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
763 uint64_t dsobj;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
764 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
765
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
766 if (origin == NULL)
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
767 origin = dp->dp_origin_snap;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
768
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
769 ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
770 ASSERT(origin == NULL || origin->ds_phys->ds_num_children > 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
771 ASSERT(dmu_tx_is_syncing(tx));
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
772 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
773
928
36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents: 885
diff changeset
774 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0,
36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents: 885
diff changeset
775 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
776 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
777 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
778 dsphys = dbuf->db_data;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
779 bzero(dsphys, sizeof (dsl_dataset_phys_t));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
780 dsphys->ds_dir_obj = dd->dd_object;
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
781 dsphys->ds_flags = flags;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
782 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
783 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
784 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
785 dsphys->ds_snapnames_zapobj =
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
786 zap_create_norm(mos, U8_TEXTPREP_TOUPPER, DMU_OT_DSL_DS_SNAP_MAP,
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
787 DMU_OT_NONE, 0, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
788 dsphys->ds_creation_time = gethrestime_sec();
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
789 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
790 dsphys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
791 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
792
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
793 if (origin) {
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
794 dsphys->ds_prev_snap_obj = origin->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
795 dsphys->ds_prev_snap_txg =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
796 origin->ds_phys->ds_creation_txg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
797 dsphys->ds_used_bytes =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
798 origin->ds_phys->ds_used_bytes;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
799 dsphys->ds_compressed_bytes =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
800 origin->ds_phys->ds_compressed_bytes;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
801 dsphys->ds_uncompressed_bytes =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
802 origin->ds_phys->ds_uncompressed_bytes;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
803 dsphys->ds_bp = origin->ds_phys->ds_bp;
6502
66aef5f20377 6694731 drc->drc_real_ds->ds_phys->ds_flags & (1ULL<<0), file: ../../common/fs/zfs/dmu_send.c, line: 1069
timh
parents: 6492
diff changeset
804 dsphys->ds_flags |= origin->ds_phys->ds_flags;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
805
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
806 dmu_buf_will_dirty(origin->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
807 origin->ds_phys->ds_num_children++;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
808
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
809 if (spa_version(dp->dp_spa) >= SPA_VERSION_NEXT_CLONES) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
810 if (origin->ds_phys->ds_next_clones_obj == 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
811 origin->ds_phys->ds_next_clones_obj =
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
812 zap_create(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
813 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
814 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
815 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
816 origin->ds_phys->ds_next_clones_obj,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
817 dsobj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
818 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
819
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
820 dmu_buf_will_dirty(dd->dd_dbuf, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
821 dd->dd_phys->dd_origin_obj = origin->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
822 }
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
823
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
824 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE)
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
825 dsphys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
826
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
827 dmu_buf_rele(dbuf, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
828
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
829 dmu_buf_will_dirty(dd->dd_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
830 dd->dd_phys->dd_head_dataset_obj = dsobj;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
831
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
832 return (dsobj);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
833 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
834
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
835 uint64_t
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
836 dsl_dataset_create_sync(dsl_dir_t *pdd, const char *lastname,
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
837 dsl_dataset_t *origin, uint64_t flags, cred_t *cr, dmu_tx_t *tx)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
838 {
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
839 dsl_pool_t *dp = pdd->dd_pool;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
840 uint64_t dsobj, ddobj;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
841 dsl_dir_t *dd;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
842
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
843 ASSERT(lastname[0] != '@');
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
844
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
845 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
846 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd));
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
847
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
848 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
849
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
850 dsl_deleg_set_create_perms(dd, tx, cr);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
851
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
852 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
853
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
854 return (dsobj);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
855 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
856
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
857 struct destroyarg {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
858 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
859 char *snapname;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
860 char *failed;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
861 boolean_t defer;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
862 };
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
863
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
864 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
865 dsl_snapshot_destroy_one(const char *name, void *arg)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
866 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
867 struct destroyarg *da = arg;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
868 dsl_dataset_t *ds;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
869 int err;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
870 char *dsname;
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
871
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
872 dsname = kmem_asprintf("%s@%s", name, da->snapname);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
873 err = dsl_dataset_own(dsname, B_TRUE, da->dstg, &ds);
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
874 strfree(dsname);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
875 if (err == 0) {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
876 struct dsl_ds_destroyarg *dsda;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
877
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
878 dsl_dataset_make_exclusive(ds, da->dstg);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
879 if (ds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
880 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
881 ds->ds_objset = NULL;
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
882 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
883 dsda = kmem_zalloc(sizeof (struct dsl_ds_destroyarg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
884 dsda->ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
885 dsda->defer = da->defer;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
886 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check,
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
887 dsl_dataset_destroy_sync, dsda, da->dstg, 0);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
888 } else if (err == ENOENT) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
889 err = 0;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
890 } else {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
891 (void) strcpy(da->failed, name);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
892 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
893 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
894 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
895
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
896 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
897 * Destroy 'snapname' in all descendants of 'fsname'.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
898 */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
899 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
900 int
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
901 dsl_snapshots_destroy(char *fsname, char *snapname, boolean_t defer)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
902 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
903 int err;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
904 struct destroyarg da;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
905 dsl_sync_task_t *dst;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
906 spa_t *spa;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
907
4603
c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents: 4577
diff changeset
908 err = spa_open(fsname, &spa, FTAG);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
909 if (err)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
910 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
911 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
912 da.snapname = snapname;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
913 da.failed = fsname;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
914 da.defer = defer;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
915
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
916 err = dmu_objset_find(fsname,
2417
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
917 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
918
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
919 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
920 err = dsl_sync_task_group_wait(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
921
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
922 for (dst = list_head(&da.dstg->dstg_tasks); dst;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
923 dst = list_next(&da.dstg->dstg_tasks, dst)) {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
924 struct dsl_ds_destroyarg *dsda = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
925 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
926
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
927 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
928 * Return the file system name that triggered the error
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
929 */
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
930 if (dst->dst_err) {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
931 dsl_dataset_name(ds, fsname);
4603
c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents: 4577
diff changeset
932 *strchr(fsname, '@') = '\0';
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
933 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
934 ASSERT3P(dsda->rm_origin, ==, NULL);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
935 dsl_dataset_disown(ds, da.dstg);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
936 kmem_free(dsda, sizeof (struct dsl_ds_destroyarg));
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
937 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
938
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
939 dsl_sync_task_group_destroy(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
940 spa_close(spa, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
941 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
942 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
943
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
944 static boolean_t
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
945 dsl_dataset_might_destroy_origin(dsl_dataset_t *ds)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
946 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
947 boolean_t might_destroy = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
948
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
949 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
950 if (ds->ds_phys->ds_num_children == 2 && ds->ds_userrefs == 0 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
951 DS_IS_DEFER_DESTROY(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
952 might_destroy = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
953 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
954
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
955 return (might_destroy);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
956 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
957
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
958 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
959 * If we're removing a clone, and these three conditions are true:
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
960 * 1) the clone's origin has no other children
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
961 * 2) the clone's origin has no user references
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
962 * 3) the clone's origin has been marked for deferred destruction
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
963 * Then, prepare to remove the origin as part of this sync task group.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
964 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
965 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
966 dsl_dataset_origin_rm_prep(struct dsl_ds_destroyarg *dsda, void *tag)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
967 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
968 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
969 dsl_dataset_t *origin = ds->ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
970
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
971 if (dsl_dataset_might_destroy_origin(origin)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
972 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
973 int namelen;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
974 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
975
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
976 namelen = dsl_dataset_namelen(origin) + 1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
977 name = kmem_alloc(namelen, KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
978 dsl_dataset_name(origin, name);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
979 #ifdef _KERNEL
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
980 error = zfs_unmount_snap(name, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
981 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
982 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
983 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
984 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
985 #endif
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
986 error = dsl_dataset_own(name, B_TRUE, tag, &origin);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
987 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
988 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
989 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
990 dsda->rm_origin = origin;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
991 dsl_dataset_make_exclusive(origin, tag);
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
992
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
993 if (origin->ds_objset != NULL) {
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
994 dmu_objset_evict(origin->ds_objset);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
995 origin->ds_objset = NULL;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
996 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
997 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
998
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
999 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1000 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1001
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1002 /*
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1003 * ds must be opened as OWNER. On return (whether successful or not),
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1004 * ds will be closed and caller can no longer dereference it.
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1005 */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1006 int
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1007 dsl_dataset_destroy(dsl_dataset_t *ds, void *tag, boolean_t defer)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1008 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1009 int err;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1010 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1011 objset_t *os;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1012 dsl_dir_t *dd;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1013 uint64_t obj;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1014 struct dsl_ds_destroyarg dsda = { 0 };
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1015 dsl_dataset_t dummy_ds = { 0 };
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1016
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1017 dsda.ds = ds;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1018
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1019 if (dsl_dataset_is_snapshot(ds)) {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1020 /* Destroying a snapshot is simpler */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1021 dsl_dataset_make_exclusive(ds, tag);
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
1022
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1023 if (ds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1024 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1025 ds->ds_objset = NULL;
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
1026 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1027 dsda.defer = defer;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1028 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1029 dsl_dataset_destroy_check, dsl_dataset_destroy_sync,
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1030 &dsda, tag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1031 ASSERT3P(dsda.rm_origin, ==, NULL);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1032 goto out;
10385
21cb6e67d108 6873727 zfs destroy -d <fs> should fail more gracefully when children are present
Chris Kirby <chris.kirby@sun.com>
parents: 10373
diff changeset
1033 } else if (defer) {
21cb6e67d108 6873727 zfs destroy -d <fs> should fail more gracefully when children are present
Chris Kirby <chris.kirby@sun.com>
parents: 10373
diff changeset
1034 err = EINVAL;
21cb6e67d108 6873727 zfs destroy -d <fs> should fail more gracefully when children are present
Chris Kirby <chris.kirby@sun.com>
parents: 10373
diff changeset
1035 goto out;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1036 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1037
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1038 dd = ds->ds_dir;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1039 dummy_ds.ds_dir = dd;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1040 dummy_ds.ds_object = ds->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1041
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1042 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1043 * Check for errors and mark this ds as inconsistent, in
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1044 * case we crash while freeing the objects.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1045 */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1046 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check,
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1047 dsl_dataset_destroy_begin_sync, ds, NULL, 0);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1048 if (err)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1049 goto out;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1050
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1051 err = dmu_objset_from_ds(ds, &os);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1052 if (err)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1053 goto out;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1054
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1055 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1056 * remove the objects in open context, so that we won't
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1057 * have too much to do in syncing context.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1058 */
3025
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents: 2885
diff changeset
1059 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE,
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents: 2885
diff changeset
1060 ds->ds_phys->ds_prev_snap_txg)) {
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1061 /*
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1062 * Ignore errors, if there is not enough disk space
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1063 * we will deal with it in dsl_dataset_destroy_sync().
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1064 */
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1065 (void) dmu_free_object(os, obj);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1066 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1067
9396
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1068 /*
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1069 * We need to sync out all in-flight IO before we try to evict
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1070 * (the dataset evict func is trying to clear the cached entries
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1071 * for this dataset in the ARC).
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1072 */
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1073 txg_wait_synced(dd->dd_pool, 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1074
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1075 /*
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1076 * If we managed to free all the objects in open
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1077 * context, the user space accounting should be zero.
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1078 */
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1079 if (ds->ds_phys->ds_bp.blk_fill == 0 &&
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1080 dmu_objset_userused_enabled(os)) {
9396
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1081 uint64_t count;
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1082
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1083 ASSERT(zap_count(os, DMU_USERUSED_OBJECT, &count) != 0 ||
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1084 count == 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1085 ASSERT(zap_count(os, DMU_GROUPUSED_OBJECT, &count) != 0 ||
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1086 count == 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1087 }
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1088
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1089 if (err != ESRCH)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1090 goto out;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1091
6975
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1092 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1093 err = dsl_dir_open_obj(dd->dd_pool, dd->dd_object, NULL, FTAG, &dd);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1094 rw_exit(&dd->dd_pool->dp_config_rwlock);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1095
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1096 if (err)
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1097 goto out;
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1098
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1099 if (ds->ds_objset) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1100 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1101 * We need to sync out all in-flight IO before we try
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1102 * to evict (the dataset evict func is trying to clear
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1103 * the cached entries for this dataset in the ARC).
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1104 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1105 txg_wait_synced(dd->dd_pool, 0);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1106 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1107
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1108 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1109 * Blow away the dsl_dir + head dataset.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1110 */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1111 dsl_dataset_make_exclusive(ds, tag);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1112 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1113 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1114 ds->ds_objset = NULL;
6975
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1115 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1116
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1117 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1118 * If we're removing a clone, we might also need to remove its
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1119 * origin.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1120 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1121 do {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1122 dsda.need_prep = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1123 if (dsl_dir_is_clone(dd)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1124 err = dsl_dataset_origin_rm_prep(&dsda, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1125 if (err) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1126 dsl_dir_close(dd, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1127 goto out;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1128 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1129 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1130
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1131 dstg = dsl_sync_task_group_create(ds->ds_dir->dd_pool);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1132 dsl_sync_task_create(dstg, dsl_dataset_destroy_check,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1133 dsl_dataset_destroy_sync, &dsda, tag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1134 dsl_sync_task_create(dstg, dsl_dir_destroy_check,
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1135 dsl_dir_destroy_sync, &dummy_ds, FTAG, 0);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1136 err = dsl_sync_task_group_wait(dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1137 dsl_sync_task_group_destroy(dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1138
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1139 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1140 * We could be racing against 'zfs release' or 'zfs destroy -d'
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1141 * on the origin snap, in which case we can get EBUSY if we
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1142 * needed to destroy the origin snap but were not ready to
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1143 * do so.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1144 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1145 if (dsda.need_prep) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1146 ASSERT(err == EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1147 ASSERT(dsl_dir_is_clone(dd));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1148 ASSERT(dsda.rm_origin == NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1149 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1150 } while (dsda.need_prep);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1151
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1152 if (dsda.rm_origin != NULL)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1153 dsl_dataset_disown(dsda.rm_origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1154
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1155 /* if it is successful, dsl_dir_destroy_sync will close the dd */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1156 if (err)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1157 dsl_dir_close(dd, FTAG);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1158 out:
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1159 dsl_dataset_disown(ds, tag);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1160 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1161 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1162
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1163 blkptr_t *
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1164 dsl_dataset_get_blkptr(dsl_dataset_t *ds)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1165 {
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1166 return (&ds->ds_phys->ds_bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1167 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1168
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1169 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1170 dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1171 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1172 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1173 /* If it's the meta-objset, set dp_meta_rootbp */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1174 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1175 tx->tx_pool->dp_meta_rootbp = *bp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1176 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1177 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1178 ds->ds_phys->ds_bp = *bp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1179 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1180 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1181
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1182 spa_t *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1183 dsl_dataset_get_spa(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1184 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1185 return (ds->ds_dir->dd_pool->dp_spa);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1186 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1187
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1188 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1189 dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1190 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1191 dsl_pool_t *dp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1192
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1193 if (ds == NULL) /* this is the meta-objset */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1194 return;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1195
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1196 ASSERT(ds->ds_objset != NULL);
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
1197
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
1198 if (ds->ds_phys->ds_next_snap_obj != 0)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
1199 panic("dirtying snapshot!");
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1200
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1201 dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1202
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1203 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1204 /* up the hold count until we can be written out */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1205 dmu_buf_add_ref(ds->ds_dbuf, ds);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1206 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1207 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1208
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1209 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1210 * The unique space in the head dataset can be calculated by subtracting
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1211 * the space used in the most recent snapshot, that is still being used
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1212 * in this file system, from the space currently in use. To figure out
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1213 * the space in the most recent snapshot still in use, we need to take
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1214 * the total space used in the snapshot and subtract out the space that
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1215 * has been freed up since the snapshot was taken.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1216 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1217 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1218 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1219 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1220 uint64_t mrs_used;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1221 uint64_t dlused, dlcomp, dluncomp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1222
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1223 ASSERT(ds->ds_object == ds->ds_dir->dd_phys->dd_head_dataset_obj);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1224
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1225 if (ds->ds_phys->ds_prev_snap_obj != 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1226 mrs_used = ds->ds_prev->ds_phys->ds_used_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1227 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1228 mrs_used = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1229
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1230 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1231 &dluncomp));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1232
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1233 ASSERT3U(dlused, <=, mrs_used);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1234 ds->ds_phys->ds_unique_bytes =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1235 ds->ds_phys->ds_used_bytes - (mrs_used - dlused);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1236
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1237 if (!DS_UNIQUE_IS_ACCURATE(ds) &&
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1238 spa_version(ds->ds_dir->dd_pool->dp_spa) >=
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1239 SPA_VERSION_UNIQUE_ACCURATE)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1240 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1241 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1242
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1243 static uint64_t
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1244 dsl_dataset_unique(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1245 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1246 if (!DS_UNIQUE_IS_ACCURATE(ds) && !dsl_dataset_is_snapshot(ds))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1247 dsl_dataset_recalc_head_uniq(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1248
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1249 return (ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1250 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1251
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1252 struct killarg {
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1253 dsl_dataset_t *ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1254 dmu_tx_t *tx;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1255 };
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1256
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1257 /* ARGSUSED */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1258 static int
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1259 kill_blkptr(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1260 const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1261 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1262 struct killarg *ka = arg;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1263 dmu_tx_t *tx = ka->tx;
7837
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
1264
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
1265 if (bp == NULL)
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
1266 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1267
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1268 if (zb->zb_level == ZB_ZIL_LEVEL) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1269 ASSERT(zilog != NULL);
8746
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1270 /*
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1271 * It's a block in the intent log. It has no
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1272 * accounting, so just free it.
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1273 */
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1274 dsl_free(ka->tx->tx_pool, ka->tx->tx_txg, bp);
8746
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1275 } else {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1276 ASSERT(zilog == NULL);
8746
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1277 ASSERT3U(bp->blk_birth, >, ka->ds->ds_phys->ds_prev_snap_txg);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1278 (void) dsl_dataset_block_kill(ka->ds, bp, tx, B_FALSE);
8746
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1279 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1280
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1281 return (0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1282 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1283
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1284 /* ARGSUSED */
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1285 static int
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1286 dsl_dataset_destroy_begin_check(void *arg1, void *arg2, dmu_tx_t *tx)
1731
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1287 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1288 dsl_dataset_t *ds = arg1;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1289 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1290 uint64_t count;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1291 int err;
1731
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1292
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1293 /*
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1294 * Can't delete a head dataset if there are snapshots of it.
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1295 * (Except if the only snapshots are from the branch we cloned
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1296 * from.)
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1297 */
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1298 if (ds->ds_prev != NULL &&
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1299 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object)
10816
731471f04028 6482588 zfs destroy -r aborts and dumps core when destroying a file system (while snapshotting is going on)
vitezslav batrla - Sun Microsystems - Prague Czech Republic <Vitezslav.Batrla@Sun.COM>
parents: 10801
diff changeset
1300 return (EBUSY);
1731
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1301
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1302 /*
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1303 * This is really a dsl_dir thing, but check it here so that
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1304 * we'll be less likely to leave this dataset inconsistent &
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1305 * nearly destroyed.
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1306 */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1307 err = zap_count(mos, ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1308 if (err)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1309 return (err);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1310 if (count != 0)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1311 return (EEXIST);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1312
1731
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1313 return (0);
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1314 }
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1315
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1316 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1317 static void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1318 dsl_dataset_destroy_begin_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1319 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1320 dsl_dataset_t *ds = arg1;
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1321 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1322
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1323 /* Mark it as inconsistent on-disk, in case we crash */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1324 dmu_buf_will_dirty(ds->ds_dbuf, tx);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1325 ds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT;
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1326
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1327 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1328 cr, "dataset = %llu", ds->ds_object);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1329 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1330
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1331 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1332 dsl_dataset_origin_check(struct dsl_ds_destroyarg *dsda, void *tag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1333 dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1334 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1335 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1336 dsl_dataset_t *ds_prev = ds->ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1337
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1338 if (dsl_dataset_might_destroy_origin(ds_prev)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1339 struct dsl_ds_destroyarg ndsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1340
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1341 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1342 * If we're not prepared to remove the origin, don't remove
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1343 * the clone either.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1344 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1345 if (dsda->rm_origin == NULL) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1346 dsda->need_prep = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1347 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1348 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1349
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1350 ndsda.ds = ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1351 ndsda.is_origin_rm = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1352 return (dsl_dataset_destroy_check(&ndsda, tag, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1353 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1354
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1355 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1356 * If we're not going to remove the origin after all,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1357 * undo the open context setup.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1358 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1359 if (dsda->rm_origin != NULL) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1360 dsl_dataset_disown(dsda->rm_origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1361 dsda->rm_origin = NULL;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1362 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1363
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1364 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1365 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1366
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1367 /* ARGSUSED */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1368 int
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1369 dsl_dataset_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1370 {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1371 struct dsl_ds_destroyarg *dsda = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1372 dsl_dataset_t *ds = dsda->ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1373
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1374 /* we have an owner hold, so noone else can destroy us */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1375 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1376
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1377 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1378 * Only allow deferred destroy on pools that support it.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1379 * NOTE: deferred destroy is only supported on snapshots.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1380 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1381 if (dsda->defer) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1382 if (spa_version(ds->ds_dir->dd_pool->dp_spa) <
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1383 SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1384 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1385 ASSERT(dsl_dataset_is_snapshot(ds));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1386 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1387 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1388
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1389 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1390 * Can't delete a head dataset if there are snapshots of it.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1391 * (Except if the only snapshots are from the branch we cloned
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1392 * from.)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1393 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1394 if (ds->ds_prev != NULL &&
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1395 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object)
10816
731471f04028 6482588 zfs destroy -r aborts and dumps core when destroying a file system (while snapshotting is going on)
vitezslav batrla - Sun Microsystems - Prague Czech Republic <Vitezslav.Batrla@Sun.COM>
parents: 10801
diff changeset
1396 return (EBUSY);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1397
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1398 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1399 * If we made changes this txg, traverse_dsl_dataset won't find
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1400 * them. Try again.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1401 */
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1402 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1403 return (EAGAIN);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1404
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1405 if (dsl_dataset_is_snapshot(ds)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1406 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1407 * If this snapshot has an elevated user reference count,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1408 * we can't destroy it yet.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1409 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1410 if (ds->ds_userrefs > 0 && !dsda->releasing)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1411 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1412
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1413 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1414 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1415 * Can't delete a branch point. However, if we're destroying
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1416 * a clone and removing its origin due to it having a user
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1417 * hold count of 0 and having been marked for deferred destroy,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1418 * it's OK for the origin to have a single clone.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1419 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1420 if (ds->ds_phys->ds_num_children >
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1421 (dsda->is_origin_rm ? 2 : 1)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1422 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1423 return (EEXIST);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1424 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1425 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1426 } else if (dsl_dir_is_clone(ds->ds_dir)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1427 return (dsl_dataset_origin_check(dsda, arg2, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1428 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1429
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1430 /* XXX we should do some i/o error checking... */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1431 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1432 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1433
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1434 struct refsarg {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1435 kmutex_t lock;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1436 boolean_t gone;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1437 kcondvar_t cv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1438 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1439
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1440 /* ARGSUSED */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1441 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1442 dsl_dataset_refs_gone(dmu_buf_t *db, void *argv)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1443 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1444 struct refsarg *arg = argv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1445
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1446 mutex_enter(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1447 arg->gone = TRUE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1448 cv_signal(&arg->cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1449 mutex_exit(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1450 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1451
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1452 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1453 dsl_dataset_drain_refs(dsl_dataset_t *ds, void *tag)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1454 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1455 struct refsarg arg;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1456
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1457 mutex_init(&arg.lock, NULL, MUTEX_DEFAULT, NULL);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1458 cv_init(&arg.cv, NULL, CV_DEFAULT, NULL);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1459 arg.gone = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1460 (void) dmu_buf_update_user(ds->ds_dbuf, ds, &arg, &ds->ds_phys,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1461 dsl_dataset_refs_gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1462 dmu_buf_rele(ds->ds_dbuf, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1463 mutex_enter(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1464 while (!arg.gone)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1465 cv_wait(&arg.cv, &arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1466 ASSERT(arg.gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1467 mutex_exit(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1468 ds->ds_dbuf = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1469 ds->ds_phys = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1470 mutex_destroy(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1471 cv_destroy(&arg.cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1472 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1473
10801
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1474 static void
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1475 remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj, dmu_tx_t *tx)
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1476 {
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1477 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1478 uint64_t count;
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1479 int err;
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1480
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1481 ASSERT(ds->ds_phys->ds_num_children >= 2);
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1482 err = zap_remove_int(mos, ds->ds_phys->ds_next_clones_obj, obj, tx);
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1483 /*
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1484 * The err should not be ENOENT, but a bug in a previous version
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1485 * of the code could cause upgrade_clones_cb() to not set
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1486 * ds_next_snap_obj when it should, leading to a missing entry.
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1487 * If we knew that the pool was created after
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1488 * SPA_VERSION_NEXT_CLONES, we could assert that it isn't
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1489 * ENOENT. However, at least we can check that we don't have
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1490 * too many entries in the next_clones_obj even after failing to
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1491 * remove this one.
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1492 */
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1493 if (err != ENOENT) {
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1494 VERIFY3U(err, ==, 0);
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1495 }
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1496 ASSERT3U(0, ==, zap_count(mos, ds->ds_phys->ds_next_clones_obj,
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1497 &count));
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1498 ASSERT3U(count, <=, ds->ds_phys->ds_num_children - 2);
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1499 }
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1500
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1501 void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1502 dsl_dataset_destroy_sync(void *arg1, void *tag, cred_t *cr, dmu_tx_t *tx)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1503 {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1504 struct dsl_ds_destroyarg *dsda = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1505 dsl_dataset_t *ds = dsda->ds;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1506 int err;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1507 int after_branch_point = FALSE;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1508 dsl_pool_t *dp = ds->ds_dir->dd_pool;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1509 objset_t *mos = dp->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1510 dsl_dataset_t *ds_prev = NULL;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1511 uint64_t obj;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1512
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1513 ASSERT(ds->ds_owner);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1514 ASSERT(dsda->defer || ds->ds_phys->ds_num_children <= 1);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1515 ASSERT(ds->ds_prev == NULL ||
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1516 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1517 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1518
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1519 if (dsda->defer) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1520 ASSERT(spa_version(dp->dp_spa) >= SPA_VERSION_USERREFS);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1521 if (ds->ds_userrefs > 0 || ds->ds_phys->ds_num_children > 1) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1522 dmu_buf_will_dirty(ds->ds_dbuf, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1523 ds->ds_phys->ds_flags |= DS_FLAG_DEFER_DESTROY;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1524 return;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1525 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1526 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1527
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1528 /* signal any waiters that this dataset is going away */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1529 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1530 ds->ds_owner = dsl_reaper;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1531 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1532 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1533
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1534 /* Remove our reservation */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1535 if (ds->ds_reserved != 0) {
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1536 dsl_prop_setarg_t psa;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1537 uint64_t value = 0;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1538
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1539 dsl_prop_setarg_init_uint64(&psa, "refreservation",
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1540 (ZPROP_SRC_NONE | ZPROP_SRC_LOCAL | ZPROP_SRC_RECEIVED),
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1541 &value);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1542 psa.psa_effective_value = 0; /* predict default value */
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1543
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1544 dsl_dataset_set_reservation_sync(ds, &psa, cr, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1545 ASSERT3U(ds->ds_reserved, ==, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1546 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1547
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1548 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1549
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1550 dsl_pool_ds_destroyed(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1551
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1552 obj = ds->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1553
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1554 if (ds->ds_phys->ds_prev_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1555 if (ds->ds_prev) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1556 ds_prev = ds->ds_prev;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1557 } else {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1558 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1559 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1560 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1561 after_branch_point =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1562 (ds_prev->ds_phys->ds_next_snap_obj != obj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1563
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1564 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1565 if (after_branch_point &&
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1566 ds_prev->ds_phys->ds_next_clones_obj != 0) {
10801
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1567 remove_from_next_clones(ds_prev, obj, tx);
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1568 if (ds->ds_phys->ds_next_snap_obj != 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1569 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1570 ds_prev->ds_phys->ds_next_clones_obj,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1571 ds->ds_phys->ds_next_snap_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1572 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1573 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1574 if (after_branch_point &&
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1575 ds->ds_phys->ds_next_snap_obj == 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1576 /* This clone is toast. */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1577 ASSERT(ds_prev->ds_phys->ds_num_children > 1);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1578 ds_prev->ds_phys->ds_num_children--;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1579
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1580 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1581 * If the clone's origin has no other clones, no
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1582 * user holds, and has been marked for deferred
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1583 * deletion, then we should have done the necessary
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1584 * destroy setup for it.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1585 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1586 if (ds_prev->ds_phys->ds_num_children == 1 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1587 ds_prev->ds_userrefs == 0 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1588 DS_IS_DEFER_DESTROY(ds_prev)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1589 ASSERT3P(dsda->rm_origin, !=, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1590 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1591 ASSERT3P(dsda->rm_origin, ==, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1592 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1593 } else if (!after_branch_point) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1594 ds_prev->ds_phys->ds_next_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1595 ds->ds_phys->ds_next_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1596 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1597 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1598
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1599 if (ds->ds_phys->ds_next_snap_obj != 0) {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1600 blkptr_t bp;
12295
e16f396f04a1 6948911 snapshot deletion can induce unsatisfiable allocations in txg sync
George Wilson <George.Wilson@Sun.COM>
parents: 12115
diff changeset
1601 zio_t *pio;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1602 dsl_dataset_t *ds_next;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1603 uint64_t itor = 0;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1604 uint64_t old_unique;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1605 int64_t used = 0, compressed = 0, uncompressed = 0;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1606
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1607 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1608 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1609 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1610
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1611 old_unique = dsl_dataset_unique(ds_next);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1612
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1613 dmu_buf_will_dirty(ds_next->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1614 ds_next->ds_phys->ds_prev_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1615 ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1616 ds_next->ds_phys->ds_prev_snap_txg =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1617 ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1618 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1619 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1620
12295
e16f396f04a1 6948911 snapshot deletion can induce unsatisfiable allocations in txg sync
George Wilson <George.Wilson@Sun.COM>
parents: 12115
diff changeset
1621 pio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
e16f396f04a1 6948911 snapshot deletion can induce unsatisfiable allocations in txg sync
George Wilson <George.Wilson@Sun.COM>
parents: 12115
diff changeset
1622
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1623 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1624 * Transfer to our deadlist (which will become next's
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1625 * new deadlist) any entries from next's current
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1626 * deadlist which were born before prev, and free the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1627 * other entries.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1628 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1629 * XXX we're doing this long task with the config lock held
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1630 */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1631 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1632 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1633 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1634 &bp, tx));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1635 if (ds_prev && !after_branch_point &&
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1636 bp.blk_birth >
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1637 ds_prev->ds_phys->ds_prev_snap_txg) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1638 ds_prev->ds_phys->ds_unique_bytes +=
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1639 bp_get_dsize_sync(dp->dp_spa, &bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1640 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1641 } else {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1642 used += bp_get_dsize_sync(dp->dp_spa, &bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1643 compressed += BP_GET_PSIZE(&bp);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1644 uncompressed += BP_GET_UCSIZE(&bp);
12295
e16f396f04a1 6948911 snapshot deletion can induce unsatisfiable allocations in txg sync
George Wilson <George.Wilson@Sun.COM>
parents: 12115
diff changeset
1645 dsl_free_sync(pio, dp, tx->tx_txg, &bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1646 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1647 }
12295
e16f396f04a1 6948911 snapshot deletion can induce unsatisfiable allocations in txg sync
George Wilson <George.Wilson@Sun.COM>
parents: 12115
diff changeset
1648 VERIFY3U(zio_wait(pio), ==, 0);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1649 ASSERT3U(used, ==, ds->ds_phys->ds_unique_bytes);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1650
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1651 /* change snapused */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1652 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1653 -used, -compressed, -uncompressed, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1654
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1655 /* free next's deadlist */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1656 bplist_close(&ds_next->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1657 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1658
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1659 /* set next's deadlist to our deadlist */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1660 bplist_close(&ds->ds_deadlist);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1661 ds_next->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1662 ds->ds_phys->ds_deadlist_obj;
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1663 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1664 ds_next->ds_phys->ds_deadlist_obj));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1665 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1666
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1667 if (ds_next->ds_phys->ds_next_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1668 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1669 * Update next's unique to include blocks which
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1670 * were previously shared by only this snapshot
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1671 * and it. Those blocks will be born after the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1672 * prev snap and before this snap, and will have
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1673 * died after the next snap and before the one
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1674 * after that (ie. be on the snap after next's
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1675 * deadlist).
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1676 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1677 * XXX we're doing this long task with the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1678 * config lock held
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1679 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1680 dsl_dataset_t *ds_after_next;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1681 uint64_t space;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1682
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1683 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1684 ds_next->ds_phys->ds_next_snap_obj,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1685 FTAG, &ds_after_next));
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1686
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1687 VERIFY(0 ==
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1688 bplist_space_birthrange(&ds_after_next->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1689 ds->ds_phys->ds_prev_snap_txg,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1690 ds->ds_phys->ds_creation_txg, &space));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1691 ds_next->ds_phys->ds_unique_bytes += space;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1692
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1693 dsl_dataset_rele(ds_after_next, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1694 ASSERT3P(ds_next->ds_prev, ==, NULL);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1695 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1696 ASSERT3P(ds_next->ds_prev, ==, ds);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1697 dsl_dataset_drop_ref(ds_next->ds_prev, ds_next);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1698 ds_next->ds_prev = NULL;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1699 if (ds_prev) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1700 VERIFY(0 == dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1701 ds->ds_phys->ds_prev_snap_obj,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1702 ds_next, &ds_next->ds_prev));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1703 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1704
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1705 dsl_dataset_recalc_head_uniq(ds_next);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1706
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1707 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1708 * Reduce the amount of our unconsmed refreservation
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1709 * being charged to our parent by the amount of
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1710 * new unique data we have gained.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1711 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1712 if (old_unique < ds_next->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1713 int64_t mrsdelta;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1714 uint64_t new_unique =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1715 ds_next->ds_phys->ds_unique_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1716
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1717 ASSERT(old_unique <= new_unique);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1718 mrsdelta = MIN(new_unique - old_unique,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1719 ds_next->ds_reserved - old_unique);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1720 dsl_dir_diduse_space(ds->ds_dir,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1721 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1722 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1723 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1724 dsl_dataset_rele(ds_next, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1725 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1726 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1727 * There's no next snapshot, so this is a head dataset.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1728 * Destroy the deadlist. Unless it's a clone, the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1729 * deadlist should be empty. (If it's a clone, it's
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1730 * safe to ignore the deadlist contents.)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1731 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1732 struct killarg ka;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1733
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1734 ASSERT(after_branch_point || bplist_empty(&ds->ds_deadlist));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1735 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1736 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1737 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1738
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1739 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1740 * Free everything that we point to (that's born after
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1741 * the previous snapshot, if we are a clone)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1742 *
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1743 * NB: this should be very quick, because we already
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1744 * freed all the objects in open context.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1745 */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1746 ka.ds = ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1747 ka.tx = tx;
7837
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
1748 err = traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg,
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
1749 TRAVERSE_POST, kill_blkptr, &ka);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1750 ASSERT3U(err, ==, 0);
9390
887948510f80 6826861 assertion failed in dsl_dataset_destroy_sync when "zfs destroy" old fs
Chris Kirby <chris.kirby@sun.com>
parents: 8779
diff changeset
1751 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) ||
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1752 ds->ds_phys->ds_unique_bytes == 0);
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1753
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1754 if (ds->ds_prev != NULL) {
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1755 dsl_dataset_rele(ds->ds_prev, ds);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1756 ds->ds_prev = ds_prev = NULL;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1757 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1758 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1759
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1760 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == ds->ds_object) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1761 /* Erase the link in the dir */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1762 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1763 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1764 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1765 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1766 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1767 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1768 /* remove from snapshot namespace */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1769 dsl_dataset_t *ds_head;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1770 ASSERT(ds->ds_phys->ds_snapnames_zapobj == 0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1771 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1772 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &ds_head));
2207
47efcb3433a7 6439370 assertion failures possible in dsl_dataset_destroy_sync()
ahrens
parents: 2199
diff changeset
1773 VERIFY(0 == dsl_dataset_get_snapname(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1774 #ifdef ZFS_DEBUG
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1775 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1776 uint64_t val;
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
1777
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1778 err = dsl_dataset_snap_lookup(ds_head,
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
1779 ds->ds_snapname, &val);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1780 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1781 ASSERT3U(val, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1782 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1783 #endif
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1784 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1785 ASSERT(err == 0);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1786 dsl_dataset_rele(ds_head, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1787 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1788
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1789 if (ds_prev && ds->ds_prev != ds_prev)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1790 dsl_dataset_rele(ds_prev, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1791
5094
71a3e95fb9e2 PSARC 2007/342 Enhanced ZFS Pool Properties
lling
parents: 4967
diff changeset
1792 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx);
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1793 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1794 cr, "dataset = %llu", ds->ds_object);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1795
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1796 if (ds->ds_phys->ds_next_clones_obj != 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1797 uint64_t count;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1798 ASSERT(0 == zap_count(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1799 ds->ds_phys->ds_next_clones_obj, &count) && count == 0);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1800 VERIFY(0 == dmu_object_free(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1801 ds->ds_phys->ds_next_clones_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1802 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1803 if (ds->ds_phys->ds_props_obj != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1804 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_props_obj, tx));
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1805 if (ds->ds_phys->ds_userrefs_obj != 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1806 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_userrefs_obj, tx));
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1807 dsl_dir_close(ds->ds_dir, ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1808 ds->ds_dir = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1809 dsl_dataset_drain_refs(ds, tag);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1810 VERIFY(0 == dmu_object_free(mos, obj, tx));
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1811
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1812 if (dsda->rm_origin) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1813 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1814 * Remove the origin of the clone we just destroyed.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1815 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1816 struct dsl_ds_destroyarg ndsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1817
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1818 ndsda.ds = dsda->rm_origin;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1819 dsl_dataset_destroy_sync(&ndsda, tag, cr, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1820 }
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1821 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1822
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1823 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1824 dsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1825 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1826 uint64_t asize;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1827
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1828 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1829 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1830
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1831 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1832 * If there's an fs-only reservation, any blocks that might become
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1833 * owned by the snapshot dataset must be accommodated by space
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1834 * outside of the reservation.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1835 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1836 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1837 if (asize > dsl_dir_space_available(ds->ds_dir, NULL, 0, FALSE))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1838 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1839
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1840 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1841 * Propogate any reserved space for this snapshot to other
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1842 * snapshot checks in this sync group.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1843 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1844 if (asize > 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1845 dsl_dir_willuse_space(ds->ds_dir, asize, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1846
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1847 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1848 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1849
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1850 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1851 int
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1852 dsl_dataset_snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1853 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1854 dsl_dataset_t *ds = arg1;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1855 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1856 int err;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1857 uint64_t value;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1858
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1859 /*
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1860 * We don't allow multiple snapshots of the same txg. If there
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1861 * is already one, try again.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1862 */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1863 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1864 return (EAGAIN);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1865
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1866 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1867 * Check for conflicting name snapshot name.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1868 */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1869 err = dsl_dataset_snap_lookup(ds, snapname, &value);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1870 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1871 return (EEXIST);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1872 if (err != ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1873 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1874
3978
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1875 /*
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1876 * Check that the dataset's name is not too long. Name consists
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1877 * of the dataset's length + 1 for the @-sign + snapshot name's length
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1878 */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1879 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1880 return (ENAMETOOLONG);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1881
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1882 err = dsl_dataset_snapshot_reserve_space(ds, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1883 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1884 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1885
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1886 ds->ds_trysnap_txg = tx->tx_txg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1887 return (0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1888 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1889
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1890 void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1891 dsl_dataset_snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1892 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1893 dsl_dataset_t *ds = arg1;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1894 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1895 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1896 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1897 dsl_dataset_phys_t *dsphys;
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1898 uint64_t dsobj, crtxg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1899 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1900 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1901
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1902 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1903
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1904 /*
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1905 * The origin's ds_creation_txg has to be < TXG_INITIAL
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1906 */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1907 if (strcmp(snapname, ORIGIN_DIR_NAME) == 0)
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1908 crtxg = 1;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1909 else
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1910 crtxg = tx->tx_txg;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1911
928
36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents: 885
diff changeset
1912 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0,
36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents: 885
diff changeset
1913 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1914 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1915 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1916 dsphys = dbuf->db_data;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1917 bzero(dsphys, sizeof (dsl_dataset_phys_t));
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1918 dsphys->ds_dir_obj = ds->ds_dir->dd_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1919 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1920 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1921 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1922 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1923 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1924 dsphys->ds_next_snap_obj = ds->ds_object;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1925 dsphys->ds_num_children = 1;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1926 dsphys->ds_creation_time = gethrestime_sec();
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1927 dsphys->ds_creation_txg = crtxg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1928 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1929 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1930 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1931 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
1932 dsphys->ds_flags = ds->ds_phys->ds_flags;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1933 dsphys->ds_bp = ds->ds_phys->ds_bp;
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1934 dmu_buf_rele(dbuf, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1935
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1936 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1937 if (ds->ds_prev) {
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1938 uint64_t next_clones_obj =
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1939 ds->ds_prev->ds_phys->ds_next_clones_obj;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1940 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj ==
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1941 ds->ds_object ||
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1942 ds->ds_prev->ds_phys->ds_num_children > 1);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1943 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1944 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1945 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1946 ds->ds_prev->ds_phys->ds_creation_txg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1947 ds->ds_prev->ds_phys->ds_next_snap_obj = dsobj;
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1948 } else if (next_clones_obj != 0) {
10801
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1949 remove_from_next_clones(ds->ds_prev,
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1950 dsphys->ds_next_snap_obj, tx);
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1951 VERIFY3U(0, ==, zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1952 next_clones_obj, dsobj, tx));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1953 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1954 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1955
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1956 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1957 * If we have a reference-reservation on this dataset, we will
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1958 * need to increase the amount of refreservation being charged
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1959 * since our unique space is going to zero.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1960 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1961 if (ds->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1962 int64_t add = MIN(dsl_dataset_unique(ds), ds->ds_reserved);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1963 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1964 add, 0, 0, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1965 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1966
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1967 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1968 dmu_buf_will_dirty(ds->ds_dbuf, tx);
5712
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
1969 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1970 ds->ds_phys->ds_prev_snap_obj = dsobj;
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1971 ds->ds_phys->ds_prev_snap_txg = crtxg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1972 ds->ds_phys->ds_unique_bytes = 0;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1973 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1974 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1975 ds->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1976 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1977 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1978 ds->ds_phys->ds_deadlist_obj));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1979
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1980 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1981 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1982 snapname, 8, 1, &dsobj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1983 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1984
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1985 if (ds->ds_prev)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1986 dsl_dataset_drop_ref(ds->ds_prev, ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1987 VERIFY(0 == dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1988 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev));
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1989
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1990 dsl_pool_ds_snapshotted(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1991
10373
bcf97ee54990 6395956 snapshot dir needs real c/mtime
Chris Kirby <chris.kirby@sun.com>
parents: 10342
diff changeset
1992 dsl_dir_snap_cmtime_update(ds->ds_dir);
bcf97ee54990 6395956 snapshot dir needs real c/mtime
Chris Kirby <chris.kirby@sun.com>
parents: 10342
diff changeset
1993
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1994 spa_history_internal_log(LOG_DS_SNAPSHOT, dp->dp_spa, tx, cr,
4603
c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents: 4577
diff changeset
1995 "dataset = %llu", dsobj);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1996 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1997
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1998 void
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1999 dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2000 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2001 ASSERT(dmu_tx_is_syncing(tx));
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2002 ASSERT(ds->ds_objset != NULL);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2003 ASSERT(ds->ds_phys->ds_next_snap_obj == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2004
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2005 /*
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2006 * in case we had to change ds_fsid_guid when we opened it,
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2007 * sync it out now.
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2008 */
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2009 dmu_buf_will_dirty(ds->ds_dbuf, tx);
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2010 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid;
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2011
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2012 dsl_dir_dirty(ds->ds_dir, tx);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2013 dmu_objset_sync(ds->ds_objset, zio, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2014 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2015
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2016 void
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2017 dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2018 {
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2019 uint64_t refd, avail, uobjs, aobjs;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2020
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2021 dsl_dir_stats(ds->ds_dir, nv);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2022
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2023 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2024 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_AVAILABLE, avail);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2025 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFERENCED, refd);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2026
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2027 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2028 ds->ds_phys->ds_creation_time);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2029 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2030 ds->ds_phys->ds_creation_txg);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2031 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2032 ds->ds_quota);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2033 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2034 ds->ds_reserved);
6643
3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user
eschrock
parents: 6502
diff changeset
2035 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_GUID,
3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user
eschrock
parents: 6502
diff changeset
2036 ds->ds_phys->ds_guid);
10575
2a8816c5173b 6882196 resource.* events shouldn't be posted during spa_tryimport()
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 10385
diff changeset
2037 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_UNIQUE,
2a8816c5173b 6882196 resource.* events shouldn't be posted during spa_tryimport()
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 10385
diff changeset
2038 dsl_dataset_unique(ds));
2a8816c5173b 6882196 resource.* events shouldn't be posted during spa_tryimport()
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 10385
diff changeset
2039 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_OBJSETID,
2a8816c5173b 6882196 resource.* events shouldn't be posted during spa_tryimport()
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 10385
diff changeset
2040 ds->ds_object);
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
2041 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERREFS,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
2042 ds->ds_userrefs);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
2043 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_DEFER_DESTROY,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
2044 DS_IS_DEFER_DESTROY(ds) ? 1 : 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2045
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2046 if (ds->ds_phys->ds_next_snap_obj) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2047 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2048 * This is a snapshot; override the dd's space used with
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2049 * our unique space and compression ratio.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2050 */
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2051 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2052 ds->ds_phys->ds_unique_bytes);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2053 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2054 ds->ds_phys->ds_compressed_bytes == 0 ? 100 :
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2055 (ds->ds_phys->ds_uncompressed_bytes * 100 /
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2056 ds->ds_phys->ds_compressed_bytes));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2057 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2058 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2059
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2060 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2061 dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2062 {
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2063 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2064 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2065 stat->dds_guid = ds->ds_phys->ds_guid;
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2066 if (ds->ds_phys->ds_next_snap_obj) {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2067 stat->dds_is_snapshot = B_TRUE;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2068 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1;
8228
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2069 } else {
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2070 stat->dds_is_snapshot = B_FALSE;
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2071 stat->dds_num_clones = 0;
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2072 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2073
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2074 /* clone origin is really a dsl_dir thing... */
5446
51fbc14b301d 6421210 zfs rollback without unmounting
ahrens
parents: 5383
diff changeset
2075 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER);
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2076 if (dsl_dir_is_clone(ds->ds_dir)) {
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2077 dsl_dataset_t *ods;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2078
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2079 VERIFY(0 == dsl_dataset_get_ref(ds->ds_dir->dd_pool,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2080 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods));
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2081 dsl_dataset_name(ods, stat->dds_origin);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2082 dsl_dataset_drop_ref(ods, FTAG);
8228
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2083 } else {
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2084 stat->dds_origin[0] = '\0';
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2085 }
5446
51fbc14b301d 6421210 zfs rollback without unmounting
ahrens
parents: 5383
diff changeset
2086 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2087 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2088
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2089 uint64_t
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2090 dsl_dataset_fsid_guid(dsl_dataset_t *ds)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2091 {
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2092 return (ds->ds_fsid_guid);
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2093 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2094
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2095 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2096 dsl_dataset_space(dsl_dataset_t *ds,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2097 uint64_t *refdbytesp, uint64_t *availbytesp,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2098 uint64_t *usedobjsp, uint64_t *availobjsp)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2099 {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2100 *refdbytesp = ds->ds_phys->ds_used_bytes;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2101 *availbytesp = dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2102 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2103 *availbytesp += ds->ds_reserved - ds->ds_phys->ds_unique_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2104 if (ds->ds_quota != 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2105 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2106 * Adjust available bytes according to refquota
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2107 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2108 if (*refdbytesp < ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2109 *availbytesp = MIN(*availbytesp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2110 ds->ds_quota - *refdbytesp);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2111 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2112 *availbytesp = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2113 }
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2114 *usedobjsp = ds->ds_phys->ds_bp.blk_fill;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2115 *availobjsp = DN_MAX_OBJECT - *usedobjsp;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2116 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2117
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2118 boolean_t
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2119 dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2120 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2121 dsl_pool_t *dp = ds->ds_dir->dd_pool;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2122
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2123 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) ||
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2124 dsl_pool_sync_context(dp));
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2125 if (ds->ds_prev == NULL)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2126 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2127 if (ds->ds_phys->ds_bp.blk_birth >
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2128 ds->ds_prev->ds_phys->ds_creation_txg)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2129 return (B_TRUE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2130 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2131 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2132
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2133 /* ARGSUSED */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2134 static int
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2135 dsl_dataset_snapshot_rename_check(void *arg1, void *arg2, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2136 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2137 dsl_dataset_t *ds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2138 char *newsnapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2139 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2140 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2141 uint64_t val;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2142 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2143
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2144 err = dsl_dataset_hold_obj(dd->dd_pool,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2145 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2146 if (err)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2147 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2148
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2149 /* new name better not be in use */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2150 err = dsl_dataset_snap_lookup(hds, newsnapname, &val);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2151 dsl_dataset_rele(hds, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2152
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2153 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2154 err = EEXIST;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2155 else if (err == ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2156 err = 0;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2157
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2158 /* dataset name + 1 for the "@" + the new snapshot name must fit */
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2159 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN)
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2160 err = ENAMETOOLONG;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2161
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2162 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2163 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2164
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2165 static void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2166 dsl_dataset_snapshot_rename_sync(void *arg1, void *arg2,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2167 cred_t *cr, dmu_tx_t *tx)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2168 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2169 dsl_dataset_t *ds = arg1;
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2170 const char *newsnapname = arg2;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2171 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2172 objset_t *mos = dd->dd_pool->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2173 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2174 int err;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2175
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2176 ASSERT(ds->ds_phys->ds_next_snap_obj != 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2177
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2178 VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2179 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2180
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2181 VERIFY(0 == dsl_dataset_get_snapname(ds));
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2182 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2183 ASSERT3U(err, ==, 0);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2184 mutex_enter(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2185 (void) strcpy(ds->ds_snapname, newsnapname);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2186 mutex_exit(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2187 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj,
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2188 ds->ds_snapname, 8, 1, &ds->ds_object, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2189 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2190
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2191 spa_history_internal_log(LOG_DS_RENAME, dd->dd_pool->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2192 cr, "dataset = %llu", ds->ds_object);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2193 dsl_dataset_rele(hds, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2194 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2195
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2196 struct renamesnaparg {
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2197 dsl_sync_task_group_t *dstg;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2198 char failed[MAXPATHLEN];
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2199 char *oldsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2200 char *newsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2201 };
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2202
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2203 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2204 dsl_snapshot_rename_one(const char *name, void *arg)
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2205 {
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2206 struct renamesnaparg *ra = arg;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2207 dsl_dataset_t *ds = NULL;
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2208 char *snapname;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2209 int err;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2210
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2211 snapname = kmem_asprintf("%s@%s", name, ra->oldsnap);
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2212 (void) strlcpy(ra->failed, snapname, sizeof (ra->failed));
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2213
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2214 /*
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2215 * For recursive snapshot renames the parent won't be changing
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2216 * so we just pass name for both the to/from argument.
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2217 */
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2218 err = zfs_secpolicy_rename_perms(snapname, snapname, CRED());
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2219 if (err != 0) {
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2220 strfree(snapname);
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2221 return (err == ENOENT ? 0 : err);
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2222 }
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2223
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2224 #ifdef _KERNEL
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2225 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2226 * For all filesystems undergoing rename, we'll need to unmount it.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2227 */
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2228 (void) zfs_unmount_snap(snapname, NULL);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2229 #endif
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2230 err = dsl_dataset_hold(snapname, ra->dstg, &ds);
11609
3b5da7ebb54d 6920880 assertion failure in dbuf_write_ready()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11546
diff changeset
2231 strfree(snapname);
3b5da7ebb54d 6920880 assertion failure in dbuf_write_ready()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11546
diff changeset
2232 if (err != 0)
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2233 return (err == ENOENT ? 0 : err);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2234
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2235 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2236 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2237
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2238 return (0);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2239 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2240
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2241 static int
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2242 dsl_recursive_rename(char *oldname, const char *newname)
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2243 {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2244 int err;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2245 struct renamesnaparg *ra;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2246 dsl_sync_task_t *dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2247 spa_t *spa;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2248 char *cp, *fsname = spa_strdup(oldname);
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2249 int len = strlen(oldname) + 1;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2250
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2251 /* truncate the snapshot name to get the fsname */
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2252 cp = strchr(fsname, '@');
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2253 *cp = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2254
4603
c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents: 4577
diff changeset
2255 err = spa_open(fsname, &spa, FTAG);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2256 if (err) {
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2257 kmem_free(fsname, len);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2258 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2259 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2260 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2261 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2262
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2263 ra->oldsnap = strchr(oldname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2264 ra->newsnap = strchr(newname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2265 *ra->failed = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2266
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2267 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2268 DS_FIND_CHILDREN);
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2269 kmem_free(fsname, len);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2270
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2271 if (err == 0) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2272 err = dsl_sync_task_group_wait(ra->dstg);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2273 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2274
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2275 for (dst = list_head(&ra->dstg->dstg_tasks); dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2276 dst = list_next(&ra->dstg->dstg_tasks, dst)) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2277 dsl_dataset_t *ds = dst->dst_arg1;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2278 if (dst->dst_err) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2279 dsl_dir_name(ds->ds_dir, ra->failed);
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2280 (void) strlcat(ra->failed, "@", sizeof (ra->failed));
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2281 (void) strlcat(ra->failed, ra->newsnap,
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2282 sizeof (ra->failed));
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2283 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2284 dsl_dataset_rele(ds, ra->dstg);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2285 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2286
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2287 if (err)
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2288 (void) strlcpy(oldname, ra->failed, sizeof (ra->failed));
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2289
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2290 dsl_sync_task_group_destroy(ra->dstg);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2291 kmem_free(ra, sizeof (struct renamesnaparg));
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2292 spa_close(spa, FTAG);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2293 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2294 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2295
4569
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2296 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2297 dsl_valid_rename(const char *oldname, void *arg)
4569
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2298 {
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2299 int delta = *(int *)arg;
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2300
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2301 if (strlen(oldname) + delta >= MAXNAMELEN)
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2302 return (ENAMETOOLONG);
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2303
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2304 return (0);
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2305 }
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2306
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2307 #pragma weak dmu_objset_rename = dsl_dataset_rename
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2308 int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2309 dsl_dataset_rename(char *oldname, const char *newname, boolean_t recursive)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2310 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2311 dsl_dir_t *dd;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2312 dsl_dataset_t *ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2313 const char *tail;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2314 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2315
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2316 err = dsl_dir_open(oldname, FTAG, &dd, &tail);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
2317 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
2318 return (err);
11701
6f890435df16 6915532 snapshot related activity causes akd to hang
Sanjeev Bagewadi <Sanjeev.Bagewadi@Sun.COM>
parents: 11609
diff changeset
2319
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2320 if (tail == NULL) {
4569
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2321 int delta = strlen(newname) - strlen(oldname);
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2322
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2323 /* if we're growing, validate child name lengths */
4569
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2324 if (delta > 0)
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2325 err = dmu_objset_find(oldname, dsl_valid_rename,
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2326 &delta, DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2327
11823
c756cd80d532 6930022 zfs rename of non-shapshot is slower than necessary
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11701
diff changeset
2328 if (err == 0)
4569
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2329 err = dsl_dir_rename(dd, newname);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2330 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2331 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2332 }
11701
6f890435df16 6915532 snapshot related activity causes akd to hang
Sanjeev Bagewadi <Sanjeev.Bagewadi@Sun.COM>
parents: 11609
diff changeset
2333
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2334 if (tail[0] != '@') {
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2335 /* the name ended in a nonexistent component */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2336 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2337 return (ENOENT);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2338 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2339
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2340 dsl_dir_close(dd, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2341
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2342 /* new name must be snapshot in same filesystem */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2343 tail = strchr(newname, '@');
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2344 if (tail == NULL)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2345 return (EINVAL);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2346 tail++;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2347 if (strncmp(oldname, newname, tail - newname) != 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2348 return (EXDEV);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2349
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2350 if (recursive) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2351 err = dsl_recursive_rename(oldname, newname);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2352 } else {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2353 err = dsl_dataset_hold(oldname, FTAG, &ds);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2354 if (err)
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2355 return (err);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2356
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2357 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2358 dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2359 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2360
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2361 dsl_dataset_rele(ds, FTAG);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2362 }
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2363
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2364 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2365 }
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2366
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2367 struct promotenode {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2368 list_node_t link;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2369 dsl_dataset_t *ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2370 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2371
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2372 struct promotearg {
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2373 list_t shared_snaps, origin_snaps, clone_snaps;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2374 dsl_dataset_t *origin_origin, *origin_head;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2375 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap;
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2376 char *err_ds;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2377 };
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2378
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2379 static int snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2380
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2381 /* ARGSUSED */
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2382 static int
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2383 dsl_dataset_promote_check(void *arg1, void *arg2, dmu_tx_t *tx)
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2384 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2385 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2386 struct promotearg *pa = arg2;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2387 struct promotenode *snap = list_head(&pa->shared_snaps);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2388 dsl_dataset_t *origin_ds = snap->ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2389 int err;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2390
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2391 /* Check that it is a real clone */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2392 if (!dsl_dir_is_clone(hds->ds_dir))
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2393 return (EINVAL);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2394
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2395 /* Since this is so expensive, don't do the preliminary check */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2396 if (!dmu_tx_is_syncing(tx))
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2397 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2398
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2399 if (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2400 return (EXDEV);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2401
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2402 /* compute origin's new unique space */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2403 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2404 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2405 err = bplist_space_birthrange(&snap->ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2406 origin_ds->ds_phys->ds_prev_snap_txg, UINT64_MAX, &pa->unique);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2407 if (err)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2408 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2409
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2410 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2411 * Walk the snapshots that we are moving
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2412 *
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2413 * Compute space to transfer. Consider the incremental changes
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2414 * to used for each snapshot:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2415 * (my used) = (prev's used) + (blocks born) - (blocks killed)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2416 * So each snapshot gave birth to:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2417 * (blocks born) = (my used) - (prev's used) + (blocks killed)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2418 * So a sequence would look like:
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2419 * (uN - u(N-1) + kN) + ... + (u1 - u0 + k1) + (u0 - 0 + k0)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2420 * Which simplifies to:
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2421 * uN + kN + kN-1 + ... + k1 + k0
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2422 * Note however, if we stop before we reach the ORIGIN we get:
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2423 * uN + kN + kN-1 + ... + kM - uM-1
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2424 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2425 pa->used = origin_ds->ds_phys->ds_used_bytes;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2426 pa->comp = origin_ds->ds_phys->ds_compressed_bytes;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2427 pa->uncomp = origin_ds->ds_phys->ds_uncompressed_bytes;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2428 for (snap = list_head(&pa->shared_snaps); snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2429 snap = list_next(&pa->shared_snaps, snap)) {
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2430 uint64_t val, dlused, dlcomp, dluncomp;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2431 dsl_dataset_t *ds = snap->ds;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2432
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2433 /* Check that the snapshot name does not conflict */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2434 VERIFY(0 == dsl_dataset_get_snapname(ds));
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2435 err = dsl_dataset_snap_lookup(hds, ds->ds_snapname, &val);
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2436 if (err == 0) {
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2437 err = EEXIST;
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2438 goto out;
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2439 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2440 if (err != ENOENT)
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2441 goto out;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2442
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2443 /* The very first snapshot does not have a deadlist */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2444 if (ds->ds_phys->ds_prev_snap_obj == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2445 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2446
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2447 if (err = bplist_space(&ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2448 &dlused, &dlcomp, &dluncomp))
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2449 goto out;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2450 pa->used += dlused;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2451 pa->comp += dlcomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2452 pa->uncomp += dluncomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2453 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2454
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2455 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2456 * If we are a clone of a clone then we never reached ORIGIN,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2457 * so we need to subtract out the clone origin's used space.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2458 */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2459 if (pa->origin_origin) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2460 pa->used -= pa->origin_origin->ds_phys->ds_used_bytes;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2461 pa->comp -= pa->origin_origin->ds_phys->ds_compressed_bytes;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2462 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2463 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2464
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2465 /* Check that there is enough space here */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2466 err = dsl_dir_transfer_possible(origin_ds->ds_dir, hds->ds_dir,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2467 pa->used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2468 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2469 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2470
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2471 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2472 * Compute the amounts of space that will be used by snapshots
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2473 * after the promotion (for both origin and clone). For each,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2474 * it is the amount of space that will be on all of their
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2475 * deadlists (that was not born before their new origin).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2476 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2477 if (hds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2478 uint64_t space;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2479
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2480 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2481 * Note, typically this will not be a clone of a clone,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2482 * so snap->ds->ds_origin_txg will be < TXG_INITIAL, so
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2483 * these snaplist_space() -> bplist_space_birthrange()
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2484 * calls will be fast because they do not have to
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2485 * iterate over all bps.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2486 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2487 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2488 err = snaplist_space(&pa->shared_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2489 snap->ds->ds_origin_txg, &pa->cloneusedsnap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2490 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2491 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2492
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2493 err = snaplist_space(&pa->clone_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2494 snap->ds->ds_origin_txg, &space);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2495 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2496 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2497 pa->cloneusedsnap += space;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2498 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2499 if (origin_ds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2500 err = snaplist_space(&pa->origin_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2501 origin_ds->ds_phys->ds_creation_txg, &pa->originusedsnap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2502 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2503 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2504 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2505
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2506 return (0);
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2507 out:
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2508 pa->err_ds = snap->ds->ds_snapname;
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2509 return (err);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2510 }
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2511
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2512 static void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2513 dsl_dataset_promote_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2514 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2515 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2516 struct promotearg *pa = arg2;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2517 struct promotenode *snap = list_head(&pa->shared_snaps);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2518 dsl_dataset_t *origin_ds = snap->ds;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2519 dsl_dataset_t *origin_head;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2520 dsl_dir_t *dd = hds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2521 dsl_pool_t *dp = hds->ds_dir->dd_pool;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2522 dsl_dir_t *odd = NULL;
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2523 uint64_t oldnext_obj;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2524 int64_t delta;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2525
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2526 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE));
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2527
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2528 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2529 origin_head = snap->ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2530
2417
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
2531 /*
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2532 * We need to explicitly open odd, since origin_ds's dd will be
2417
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
2533 * changing.
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
2534 */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2535 VERIFY(0 == dsl_dir_open_obj(dp, origin_ds->ds_dir->dd_object,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2536 NULL, FTAG, &odd));
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2537
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2538 /* change origin's next snap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2539 dmu_buf_will_dirty(origin_ds->ds_dbuf, tx);
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2540 oldnext_obj = origin_ds->ds_phys->ds_next_snap_obj;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2541 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2542 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2543 origin_ds->ds_phys->ds_next_snap_obj = snap->ds->ds_object;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2544
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2545 /* change the origin's next clone */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2546 if (origin_ds->ds_phys->ds_next_clones_obj) {
10801
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
2547 remove_from_next_clones(origin_ds, snap->ds->ds_object, tx);
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2548 VERIFY3U(0, ==, zap_add_int(dp->dp_meta_objset,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2549 origin_ds->ds_phys->ds_next_clones_obj,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2550 oldnext_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2551 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2552
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2553 /* change origin */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2554 dmu_buf_will_dirty(dd->dd_dbuf, tx);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2555 ASSERT3U(dd->dd_phys->dd_origin_obj, ==, origin_ds->ds_object);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2556 dd->dd_phys->dd_origin_obj = odd->dd_phys->dd_origin_obj;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2557 hds->ds_origin_txg = origin_head->ds_origin_txg;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2558 dmu_buf_will_dirty(odd->dd_dbuf, tx);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2559 odd->dd_phys->dd_origin_obj = origin_ds->ds_object;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2560 origin_head->ds_origin_txg = origin_ds->ds_phys->ds_creation_txg;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2561
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2562 /* move snapshots to this dir */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2563 for (snap = list_head(&pa->shared_snaps); snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2564 snap = list_next(&pa->shared_snaps, snap)) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2565 dsl_dataset_t *ds = snap->ds;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2566
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
2567 /* unregister props as dsl_dir is changing */
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2568 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2569 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2570 ds->ds_objset = NULL;
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
2571 }
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2572 /* move snap name entry */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2573 VERIFY(0 == dsl_dataset_get_snapname(ds));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2574 VERIFY(0 == dsl_dataset_snap_remove(origin_head,
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2575 ds->ds_snapname, tx));
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2576 VERIFY(0 == zap_add(dp->dp_meta_objset,
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2577 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname,
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2578 8, 1, &ds->ds_object, tx));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2579 /* change containing dsl_dir */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2580 dmu_buf_will_dirty(ds->ds_dbuf, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2581 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2582 ds->ds_phys->ds_dir_obj = dd->dd_object;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2583 ASSERT3P(ds->ds_dir, ==, odd);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2584 dsl_dir_close(ds->ds_dir, ds);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2585 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object,
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2586 NULL, ds, &ds->ds_dir));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2587
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2588 ASSERT3U(dsl_prop_numcb(ds), ==, 0);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2589 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2590
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2591 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2592 * Change space accounting.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2593 * Note, pa->*usedsnap and dd_used_breakdown[SNAP] will either
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2594 * both be valid, or both be 0 (resulting in delta == 0). This
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2595 * is true for each of {clone,origin} independently.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2596 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2597
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2598 delta = pa->cloneusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2599 dd->dd_phys->dd_used_breakdown[DD_USED_SNAP];
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2600 ASSERT3S(delta, >=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2601 ASSERT3U(pa->used, >=, delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2602 dsl_dir_diduse_space(dd, DD_USED_SNAP, delta, 0, 0, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2603 dsl_dir_diduse_space(dd, DD_USED_HEAD,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2604 pa->used - delta, pa->comp, pa->uncomp, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2605
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2606 delta = pa->originusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2607 odd->dd_phys->dd_used_breakdown[DD_USED_SNAP];
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2608 ASSERT3S(delta, <=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2609 ASSERT3U(pa->used, >=, -delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2610 dsl_dir_diduse_space(odd, DD_USED_SNAP, delta, 0, 0, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2611 dsl_dir_diduse_space(odd, DD_USED_HEAD,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2612 -pa->used - delta, -pa->comp, -pa->uncomp, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2613
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2614 origin_ds->ds_phys->ds_unique_bytes = pa->unique;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2615
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2616 /* log history record */
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2617 spa_history_internal_log(LOG_DS_PROMOTE, dd->dd_pool->dp_spa, tx,
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2618 cr, "dataset = %llu", hds->ds_object);
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2619
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2620 dsl_dir_close(odd, FTAG);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2621 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2622
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2623 static char *snaplist_tag = "snaplist";
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2624 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2625 * Make a list of dsl_dataset_t's for the snapshots between first_obj
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2626 * (exclusive) and last_obj (inclusive). The list will be in reverse
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2627 * order (last_obj will be the list_head()). If first_obj == 0, do all
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2628 * snapshots back to this dataset's origin.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2629 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2630 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2631 snaplist_make(dsl_pool_t *dp, boolean_t own,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2632 uint64_t first_obj, uint64_t last_obj, list_t *l)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2633 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2634 uint64_t obj = last_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2635
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2636 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2637
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2638 list_create(l, sizeof (struct promotenode),
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2639 offsetof(struct promotenode, link));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2640
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2641 while (obj != first_obj) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2642 dsl_dataset_t *ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2643 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2644 int err;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2645
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2646 if (own) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2647 err = dsl_dataset_own_obj(dp, obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2648 0, snaplist_tag, &ds);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2649 if (err == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2650 dsl_dataset_make_exclusive(ds, snaplist_tag);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2651 } else {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2652 err = dsl_dataset_hold_obj(dp, obj, snaplist_tag, &ds);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2653 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2654 if (err == ENOENT) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2655 /* lost race with snapshot destroy */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2656 struct promotenode *last = list_tail(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2657 ASSERT(obj != last->ds->ds_phys->ds_prev_snap_obj);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2658 obj = last->ds->ds_phys->ds_prev_snap_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2659 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2660 } else if (err) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2661 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2662 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2663
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2664 if (first_obj == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2665 first_obj = ds->ds_dir->dd_phys->dd_origin_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2666
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2667 snap = kmem_alloc(sizeof (struct promotenode), KM_SLEEP);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2668 snap->ds = ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2669 list_insert_tail(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2670 obj = ds->ds_phys->ds_prev_snap_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2671 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2672
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2673 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2674 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2675
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2676 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2677 snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2678 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2679 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2680
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2681 *spacep = 0;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2682 for (snap = list_head(l); snap; snap = list_next(l, snap)) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2683 uint64_t used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2684 int err = bplist_space_birthrange(&snap->ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2685 mintxg, UINT64_MAX, &used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2686 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2687 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2688 *spacep += used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2689 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2690 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2691 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2692
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2693 static void
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2694 snaplist_destroy(list_t *l, boolean_t own)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2695 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2696 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2697
8779
f164e0e90508 6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents: 8746
diff changeset
2698 if (!l || !list_link_active(&l->list_head))
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2699 return;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2700
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2701 while ((snap = list_tail(l)) != NULL) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2702 list_remove(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2703 if (own)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2704 dsl_dataset_disown(snap->ds, snaplist_tag);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2705 else
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2706 dsl_dataset_rele(snap->ds, snaplist_tag);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2707 kmem_free(snap, sizeof (struct promotenode));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2708 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2709 list_destroy(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2710 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2711
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2712 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2713 * Promote a clone. Nomenclature note:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2714 * "clone" or "cds": the original clone which is being promoted
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2715 * "origin" or "ods": the snapshot which is originally clone's origin
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2716 * "origin head" or "ohds": the dataset which is the head
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2717 * (filesystem/volume) for the origin
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2718 * "origin origin": the origin of the origin's filesystem (typically
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2719 * NULL, indicating that the clone is not a clone of a clone).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2720 */
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2721 int
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2722 dsl_dataset_promote(const char *name, char *conflsnap)
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2723 {
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2724 dsl_dataset_t *ds;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2725 dsl_dir_t *dd;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2726 dsl_pool_t *dp;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2727 dmu_object_info_t doi;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2728 struct promotearg pa = { 0 };
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2729 struct promotenode *snap;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2730 int err;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2731
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2732 err = dsl_dataset_hold(name, FTAG, &ds);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2733 if (err)
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2734 return (err);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2735 dd = ds->ds_dir;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2736 dp = dd->dd_pool;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2737
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2738 err = dmu_object_info(dp->dp_meta_objset,
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2739 ds->ds_phys->ds_snapnames_zapobj, &doi);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2740 if (err) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2741 dsl_dataset_rele(ds, FTAG);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2742 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2743 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2744
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2745 if (dsl_dataset_is_snapshot(ds) || dd->dd_phys->dd_origin_obj == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2746 dsl_dataset_rele(ds, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2747 return (EINVAL);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2748 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2749
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2750 /*
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2751 * We are going to inherit all the snapshots taken before our
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2752 * origin (i.e., our new origin will be our parent's origin).
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2753 * Take ownership of them so that we can rename them into our
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2754 * namespace.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2755 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2756 rw_enter(&dp->dp_config_rwlock, RW_READER);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2757
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2758 err = snaplist_make(dp, B_TRUE, 0, dd->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2759 &pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2760 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2761 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2762
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2763 err = snaplist_make(dp, B_FALSE, 0, ds->ds_object, &pa.clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2764 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2765 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2766
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2767 snap = list_head(&pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2768 ASSERT3U(snap->ds->ds_object, ==, dd->dd_phys->dd_origin_obj);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2769 err = snaplist_make(dp, B_FALSE, dd->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2770 snap->ds->ds_dir->dd_phys->dd_head_dataset_obj, &pa.origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2771 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2772 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2773
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2774 if (dsl_dir_is_clone(snap->ds->ds_dir)) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2775 err = dsl_dataset_own_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2776 snap->ds->ds_dir->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2777 0, FTAG, &pa.origin_origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2778 if (err != 0)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2779 goto out;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2780 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2781
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2782 out:
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2783 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2784
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2785 /*
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2786 * Add in 128x the snapnames zapobj size, since we will be moving
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2787 * a bunch of snapnames to the promoted ds, and dirtying their
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2788 * bonus buffers.
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2789 */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2790 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2791 err = dsl_sync_task_do(dp, dsl_dataset_promote_check,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2792 dsl_dataset_promote_sync, ds, &pa,
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
2793 2 + 2 * doi.doi_physical_blocks_512);
10588
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2794 if (err && pa.err_ds && conflsnap)
dc03f981ea18 6438937 if 'zfs destroy' fails, it can leave a zvol device link missing
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 10575
diff changeset
2795 (void) strncpy(conflsnap, pa.err_ds, MAXNAMELEN);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2796 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2797
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2798 snaplist_destroy(&pa.shared_snaps, B_TRUE);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2799 snaplist_destroy(&pa.clone_snaps, B_FALSE);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2800 snaplist_destroy(&pa.origin_snaps, B_FALSE);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2801 if (pa.origin_origin)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2802 dsl_dataset_disown(pa.origin_origin, FTAG);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2803 dsl_dataset_rele(ds, FTAG);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2804 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2805 }
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
2806
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2807 struct cloneswaparg {
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2808 dsl_dataset_t *cds; /* clone dataset */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2809 dsl_dataset_t *ohds; /* origin's head dataset */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2810 boolean_t force;
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2811 int64_t unused_refres_delta; /* change in unconsumed refreservation */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2812 };
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2813
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2814 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2815 static int
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2816 dsl_dataset_clone_swap_check(void *arg1, void *arg2, dmu_tx_t *tx)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2817 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2818 struct cloneswaparg *csa = arg1;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2819
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2820 /* they should both be heads */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2821 if (dsl_dataset_is_snapshot(csa->cds) ||
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2822 dsl_dataset_is_snapshot(csa->ohds))
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2823 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2824
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2825 /* the branch point should be just before them */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2826 if (csa->cds->ds_prev != csa->ohds->ds_prev)
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2827 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2828
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2829 /* cds should be the clone (unless they are unrelated) */
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2830 if (csa->cds->ds_prev != NULL &&
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2831 csa->cds->ds_prev != csa->cds->ds_dir->dd_pool->dp_origin_snap &&
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2832 csa->ohds->ds_object !=
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2833 csa->cds->ds_prev->ds_phys->ds_next_snap_obj)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2834 return (EINVAL);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2835
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2836 /* the clone should be a child of the origin */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2837 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2838 return (EINVAL);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2839
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2840 /* ohds shouldn't be modified unless 'force' */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2841 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds))
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2842 return (ETXTBSY);
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2843
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2844 /* adjust amount of any unconsumed refreservation */
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2845 csa->unused_refres_delta =
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2846 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2847 csa->ohds->ds_phys->ds_unique_bytes) -
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2848 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2849 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2850
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2851 if (csa->unused_refres_delta > 0 &&
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2852 csa->unused_refres_delta >
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2853 dsl_dir_space_available(csa->ohds->ds_dir, NULL, 0, TRUE))
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2854 return (ENOSPC);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2855
10799
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2856 if (csa->ohds->ds_quota != 0 &&
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2857 csa->cds->ds_phys->ds_unique_bytes > csa->ohds->ds_quota)
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2858 return (EDQUOT);
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2859
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2860 return (0);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2861 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2862
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2863 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2864 static void
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2865 dsl_dataset_clone_swap_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2866 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2867 struct cloneswaparg *csa = arg1;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2868 dsl_pool_t *dp = csa->cds->ds_dir->dd_pool;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2869
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2870 ASSERT(csa->cds->ds_reserved == 0);
10799
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2871 ASSERT(csa->ohds->ds_quota == 0 ||
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2872 csa->cds->ds_phys->ds_unique_bytes <= csa->ohds->ds_quota);
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2873
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2874 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2875 dmu_buf_will_dirty(csa->ohds->ds_dbuf, tx);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2876
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2877 if (csa->cds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2878 dmu_objset_evict(csa->cds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2879 csa->cds->ds_objset = NULL;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2880 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2881
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2882 if (csa->ohds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2883 dmu_objset_evict(csa->ohds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2884 csa->ohds->ds_objset = NULL;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2885 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2886
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2887 /*
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2888 * Reset origin's unique bytes, if it exists.
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2889 */
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2890 if (csa->cds->ds_prev) {
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2891 dsl_dataset_t *origin = csa->cds->ds_prev;
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2892 dmu_buf_will_dirty(origin->ds_dbuf, tx);
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2893 VERIFY(0 == bplist_space_birthrange(&csa->cds->ds_deadlist,
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2894 origin->ds_phys->ds_prev_snap_txg, UINT64_MAX,
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2895 &origin->ds_phys->ds_unique_bytes));
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2896 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2897
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2898 /* swap blkptrs */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2899 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2900 blkptr_t tmp;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2901 tmp = csa->ohds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2902 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2903 csa->cds->ds_phys->ds_bp = tmp;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2904 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2905
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2906 /* set dd_*_bytes */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2907 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2908 int64_t dused, dcomp, duncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2909 uint64_t cdl_used, cdl_comp, cdl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2910 uint64_t odl_used, odl_comp, odl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2911
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2912 ASSERT3U(csa->cds->ds_dir->dd_phys->
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2913 dd_used_breakdown[DD_USED_SNAP], ==, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2914
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2915 VERIFY(0 == bplist_space(&csa->cds->ds_deadlist, &cdl_used,
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2916 &cdl_comp, &cdl_uncomp));
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2917 VERIFY(0 == bplist_space(&csa->ohds->ds_deadlist, &odl_used,
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2918 &odl_comp, &odl_uncomp));
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2919
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2920 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used -
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2921 (csa->ohds->ds_phys->ds_used_bytes + odl_used);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2922 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp -
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2923 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2924 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes +
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2925 cdl_uncomp -
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2926 (csa->ohds->ds_phys->ds_uncompressed_bytes + odl_uncomp);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2927
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2928 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_HEAD,
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2929 dused, dcomp, duncomp, tx);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2930 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD,
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2931 -dused, -dcomp, -duncomp, tx);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2932
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2933 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2934 * The difference in the space used by snapshots is the
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2935 * difference in snapshot space due to the head's
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2936 * deadlist (since that's the only thing that's
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2937 * changing that affects the snapused).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2938 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2939 VERIFY(0 == bplist_space_birthrange(&csa->cds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2940 csa->ohds->ds_origin_txg, UINT64_MAX, &cdl_used));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2941 VERIFY(0 == bplist_space_birthrange(&csa->ohds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2942 csa->ohds->ds_origin_txg, UINT64_MAX, &odl_used));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2943 dsl_dir_transfer_space(csa->ohds->ds_dir, cdl_used - odl_used,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2944 DD_USED_HEAD, DD_USED_SNAP, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2945 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2946
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2947 #define SWITCH64(x, y) \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2948 { \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2949 uint64_t __tmp = (x); \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2950 (x) = (y); \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2951 (y) = __tmp; \
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2952 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2953
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2954 /* swap ds_*_bytes */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2955 SWITCH64(csa->ohds->ds_phys->ds_used_bytes,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2956 csa->cds->ds_phys->ds_used_bytes);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2957 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2958 csa->cds->ds_phys->ds_compressed_bytes);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2959 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2960 csa->cds->ds_phys->ds_uncompressed_bytes);
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2961 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2962 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2963
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2964 /* apply any parent delta for change in unconsumed refreservation */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2965 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_REFRSRV,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2966 csa->unused_refres_delta, 0, 0, tx);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2967
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2968 /* swap deadlists */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2969 bplist_close(&csa->cds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2970 bplist_close(&csa->ohds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2971 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2972 csa->cds->ds_phys->ds_deadlist_obj);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2973 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2974 csa->cds->ds_phys->ds_deadlist_obj));
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2975 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2976 csa->ohds->ds_phys->ds_deadlist_obj));
7837
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
2977
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
2978 dsl_pool_ds_clone_swapped(csa->ohds, csa->cds, tx);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2979 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2980
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2981 /*
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2982 * Swap 'clone' with its origin head datasets. Used at the end of "zfs
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2983 * recv" into an existing fs to swizzle the file system to the new
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2984 * version, and by "zfs rollback". Can also be used to swap two
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2985 * independent head datasets if neither has any snapshots.
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2986 */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2987 int
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2988 dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2989 boolean_t force)
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2990 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2991 struct cloneswaparg csa;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2992 int error;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2993
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2994 ASSERT(clone->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2995 ASSERT(origin_head->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2996 retry:
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2997 /* Need exclusive access for the swap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2998 rw_enter(&clone->ds_rwlock, RW_WRITER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2999 if (!rw_tryenter(&origin_head->ds_rwlock, RW_WRITER)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3000 rw_exit(&clone->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3001 rw_enter(&origin_head->ds_rwlock, RW_WRITER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3002 if (!rw_tryenter(&clone->ds_rwlock, RW_WRITER)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3003 rw_exit(&origin_head->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3004 goto retry;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3005 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3006 }
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
3007 csa.cds = clone;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
3008 csa.ohds = origin_head;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
3009 csa.force = force;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3010 error = dsl_sync_task_do(clone->ds_dir->dd_pool,
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
3011 dsl_dataset_clone_swap_check,
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3012 dsl_dataset_clone_swap_sync, &csa, NULL, 9);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3013 return (error);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
3014 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
3015
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3016 /*
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3017 * Given a pool name and a dataset object number in that pool,
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3018 * return the name of that dataset.
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3019 */
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3020 int
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3021 dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3022 {
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3023 spa_t *spa;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3024 dsl_pool_t *dp;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3025 dsl_dataset_t *ds;
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3026 int error;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3027
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3028 if ((error = spa_open(pname, &spa, FTAG)) != 0)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3029 return (error);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3030 dp = spa_get_dsl(spa);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3031 rw_enter(&dp->dp_config_rwlock, RW_READER);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3032 if ((error = dsl_dataset_hold_obj(dp, obj, FTAG, &ds)) == 0) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3033 dsl_dataset_name(ds, buf);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3034 dsl_dataset_rele(ds, FTAG);
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3035 }
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3036 rw_exit(&dp->dp_config_rwlock);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3037 spa_close(spa, FTAG);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3038
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3039 return (error);
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3040 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3041
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3042 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3043 dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3044 uint64_t asize, uint64_t inflight, uint64_t *used, uint64_t *ref_rsrv)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3045 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3046 int error = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3047
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3048 ASSERT3S(asize, >, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3049
5831
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3050 /*
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3051 * *ref_rsrv is the portion of asize that will come from any
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3052 * unconsumed refreservation space.
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3053 */
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3054 *ref_rsrv = 0;
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3055
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3056 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3057 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3058 * Make a space adjustment for reserved bytes.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3059 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3060 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3061 ASSERT3U(*used, >=,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3062 ds->ds_reserved - ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3063 *used -= (ds->ds_reserved - ds->ds_phys->ds_unique_bytes);
5831
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3064 *ref_rsrv =
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3065 asize - MIN(asize, parent_delta(ds, asize + inflight));
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3066 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3067
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3068 if (!check_quota || ds->ds_quota == 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3069 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3070 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3071 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3072 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3073 * If they are requesting more space, and our current estimate
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3074 * is over quota, they get to try again unless the actual
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3075 * on-disk is over quota and there are no pending changes (which
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3076 * may free up space for us).
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3077 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3078 if (ds->ds_phys->ds_used_bytes + inflight >= ds->ds_quota) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3079 if (inflight > 0 || ds->ds_phys->ds_used_bytes < ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3080 error = ERESTART;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3081 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3082 error = EDQUOT;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3083 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3084 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3085
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3086 return (error);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3087 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3088
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3089 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3090 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3091 dsl_dataset_set_quota_check(void *arg1, void *arg2, dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3092 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3093 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3094 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3095 int err;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3096
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3097 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_REFQUOTA)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3098 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3099
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3100 if ((err = dsl_prop_predict_sync(ds->ds_dir, psa)) != 0)
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3101 return (err);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3102
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3103 if (psa->psa_effective_value == 0)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3104 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3105
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3106 if (psa->psa_effective_value < ds->ds_phys->ds_used_bytes ||
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3107 psa->psa_effective_value < ds->ds_reserved)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3108 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3109
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3110 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3111 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3112
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3113 extern void dsl_prop_set_sync(void *, void *, cred_t *, dmu_tx_t *);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3114
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3115 void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3116 dsl_dataset_set_quota_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3117 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3118 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3119 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3120 uint64_t effective_value = psa->psa_effective_value;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3121
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3122 dsl_prop_set_sync(ds, psa, cr, tx);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3123 DSL_PROP_CHECK_PREDICTION(ds->ds_dir, psa);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3124
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3125 if (ds->ds_quota != effective_value) {
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3126 dmu_buf_will_dirty(ds->ds_dbuf, tx);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3127 ds->ds_quota = effective_value;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3128
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3129 spa_history_internal_log(LOG_DS_REFQUOTA,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3130 ds->ds_dir->dd_pool->dp_spa, tx, cr, "%lld dataset = %llu ",
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3131 (longlong_t)ds->ds_quota, ds->ds_object);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3132 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3133 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3134
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3135 int
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3136 dsl_dataset_set_quota(const char *dsname, zprop_source_t source, uint64_t quota)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3137 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3138 dsl_dataset_t *ds;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3139 dsl_prop_setarg_t psa;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3140 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3141
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3142 dsl_prop_setarg_init_uint64(&psa, "refquota", source, &quota);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3143
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3144 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3145 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3146 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3147
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3148 /*
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3149 * If someone removes a file, then tries to set the quota, we
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3150 * want to make sure the file freeing takes effect.
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3151 */
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3152 txg_wait_open(ds->ds_dir->dd_pool, 0);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3153
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3154 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3155 dsl_dataset_set_quota_check, dsl_dataset_set_quota_sync,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3156 ds, &psa, 0);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3157
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3158 dsl_dataset_rele(ds, FTAG);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3159 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3160 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3161
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3162 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3163 dsl_dataset_set_reservation_check(void *arg1, void *arg2, dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3164 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3165 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3166 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3167 uint64_t effective_value;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3168 uint64_t unique;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3169 int err;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3170
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3171 if (spa_version(ds->ds_dir->dd_pool->dp_spa) <
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3172 SPA_VERSION_REFRESERVATION)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3173 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3174
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3175 if (dsl_dataset_is_snapshot(ds))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3176 return (EINVAL);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3177
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3178 if ((err = dsl_prop_predict_sync(ds->ds_dir, psa)) != 0)
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3179 return (err);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3180
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3181 effective_value = psa->psa_effective_value;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3182
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3183 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3184 * If we are doing the preliminary check in open context, the
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3185 * space estimates may be inaccurate.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3186 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3187 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3188 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3189
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3190 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3191 unique = dsl_dataset_unique(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3192 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3193
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3194 if (MAX(unique, effective_value) > MAX(unique, ds->ds_reserved)) {
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3195 uint64_t delta = MAX(unique, effective_value) -
8525
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3196 MAX(unique, ds->ds_reserved);
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3197
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3198 if (delta > dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE))
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3199 return (ENOSPC);
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3200 if (ds->ds_quota > 0 &&
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3201 effective_value > ds->ds_quota)
8525
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3202 return (ENOSPC);
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3203 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3204
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3205 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3206 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3207
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3208 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3209 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3210 dsl_dataset_set_reservation_sync(void *arg1, void *arg2, cred_t *cr,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3211 dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3212 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3213 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3214 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3215 uint64_t effective_value = psa->psa_effective_value;
7595
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3216 uint64_t unique;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3217 int64_t delta;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3218
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3219 dsl_prop_set_sync(ds, psa, cr, tx);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3220 DSL_PROP_CHECK_PREDICTION(ds->ds_dir, psa);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3221
7595
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3222 dmu_buf_will_dirty(ds->ds_dbuf, tx);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3223
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3224 mutex_enter(&ds->ds_dir->dd_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3225 mutex_enter(&ds->ds_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3226 unique = dsl_dataset_unique(ds);
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3227 delta = MAX(0, (int64_t)(effective_value - unique)) -
7595
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3228 MAX(0, (int64_t)(ds->ds_reserved - unique));
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3229 ds->ds_reserved = effective_value;
7595
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3230 mutex_exit(&ds->ds_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3231
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3232 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, delta, 0, 0, tx);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3233 mutex_exit(&ds->ds_dir->dd_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3234
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3235 spa_history_internal_log(LOG_DS_REFRESERV,
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3236 ds->ds_dir->dd_pool->dp_spa, tx, cr, "%lld dataset = %llu",
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3237 (longlong_t)effective_value, ds->ds_object);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3238 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3239
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3240 int
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3241 dsl_dataset_set_reservation(const char *dsname, zprop_source_t source,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3242 uint64_t reservation)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3243 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3244 dsl_dataset_t *ds;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3245 dsl_prop_setarg_t psa;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3246 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3247
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3248 dsl_prop_setarg_init_uint64(&psa, "refreservation", source,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3249 &reservation);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3250
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3251 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3252 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3253 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3254
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3255 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3256 dsl_dataset_set_reservation_check,
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3257 dsl_dataset_set_reservation_sync, ds, &psa, 0);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3258
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3259 dsl_dataset_rele(ds, FTAG);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3260 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3261 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3262
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3263 struct dsl_ds_holdarg {
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3264 dsl_sync_task_group_t *dstg;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3265 char *htag;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3266 char *snapname;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3267 boolean_t recursive;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3268 boolean_t gotone;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3269 boolean_t temphold;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3270 char failed[MAXPATHLEN];
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3271 };
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3272
10951
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3273 /*
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3274 * The max length of a temporary tag prefix is the number of hex digits
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3275 * required to express UINT64_MAX plus one for the hyphen.
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3276 */
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3277 #define MAX_TAG_PREFIX_LEN 17
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3278
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3279 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3280 dsl_dataset_user_hold_check(void *arg1, void *arg2, dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3281 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3282 dsl_dataset_t *ds = arg1;
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3283 struct dsl_ds_holdarg *ha = arg2;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3284 char *htag = ha->htag;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3285 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3286 int error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3287
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3288 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3289 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3290
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3291 if (!dsl_dataset_is_snapshot(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3292 return (EINVAL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3293
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3294 /* tags must be unique */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3295 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3296 if (ds->ds_phys->ds_userrefs_obj) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3297 error = zap_lookup(mos, ds->ds_phys->ds_userrefs_obj, htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3298 8, 1, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3299 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3300 error = EEXIST;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3301 else if (error == ENOENT)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3302 error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3303 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3304 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3305
10951
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3306 if (error == 0 && ha->temphold &&
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3307 strlen(htag) + MAX_TAG_PREFIX_LEN >= MAXNAMELEN)
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3308 error = E2BIG;
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3309
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3310 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3311 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3312
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3313 static void
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3314 dsl_dataset_user_hold_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3315 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3316 dsl_dataset_t *ds = arg1;
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3317 struct dsl_ds_holdarg *ha = arg2;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3318 char *htag = ha->htag;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3319 dsl_pool_t *dp = ds->ds_dir->dd_pool;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3320 objset_t *mos = dp->dp_meta_objset;
10951
56fd5475e8fe 6896756 assertion failed: 0 == dsl_pool_user_hold(dp, ds->ds_object, htag, &now, tx)
Chris Kirby <Chris.Kirby@sun.com>
parents: 10922
diff changeset
3321 uint64_t now = gethrestime_sec();
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3322 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3323
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3324 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3325 if (ds->ds_phys->ds_userrefs_obj == 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3326 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3327 * This is the first user hold for this dataset. Create
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3328 * the userrefs zap object.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3329 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3330 dmu_buf_will_dirty(ds->ds_dbuf, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3331 zapobj = ds->ds_phys->ds_userrefs_obj =
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3332 zap_create(mos, DMU_OT_USERREFS, DMU_OT_NONE, 0, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3333 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3334 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3335 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3336 ds->ds_userrefs++;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3337 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3338
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3339 VERIFY(0 == zap_add(mos, zapobj, htag, 8, 1, &now, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3340
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3341 if (ha->temphold) {
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3342 VERIFY(0 == dsl_pool_user_hold(dp, ds->ds_object,
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3343 htag, &now, tx));
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3344 }
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3345
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3346 spa_history_internal_log(LOG_DS_USER_HOLD,
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3347 dp->dp_spa, tx, cr, "<%s> temp = %d dataset = %llu", htag,
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3348 (int)ha->temphold, ds->ds_object);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3349 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3350
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3351 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3352 dsl_dataset_user_hold_one(const char *dsname, void *arg)
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3353 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3354 struct dsl_ds_holdarg *ha = arg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3355 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3356 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3357 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3358
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3359 /* alloc a buffer to hold dsname@snapname plus terminating NULL */
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
3360 name = kmem_asprintf("%s@%s", dsname, ha->snapname);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3361 error = dsl_dataset_hold(name, ha->dstg, &ds);
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
3362 strfree(name);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3363 if (error == 0) {
10268
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3364 ha->gotone = B_TRUE;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3365 dsl_sync_task_create(ha->dstg, dsl_dataset_user_hold_check,
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3366 dsl_dataset_user_hold_sync, ds, ha, 0);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3367 } else if (error == ENOENT && ha->recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3368 error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3369 } else {
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3370 (void) strlcpy(ha->failed, dsname, sizeof (ha->failed));
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3371 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3372 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3373 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3374
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3375 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3376 dsl_dataset_user_hold(char *dsname, char *snapname, char *htag,
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3377 boolean_t recursive, boolean_t temphold)
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3378 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3379 struct dsl_ds_holdarg *ha;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3380 dsl_sync_task_t *dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3381 spa_t *spa;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3382 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3383
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3384 ha = kmem_zalloc(sizeof (struct dsl_ds_holdarg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3385
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3386 (void) strlcpy(ha->failed, dsname, sizeof (ha->failed));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3387
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3388 error = spa_open(dsname, &spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3389 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3390 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3391 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3392 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3393
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3394 ha->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3395 ha->htag = htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3396 ha->snapname = snapname;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3397 ha->recursive = recursive;
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3398 ha->temphold = temphold;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3399 if (recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3400 error = dmu_objset_find(dsname, dsl_dataset_user_hold_one,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3401 ha, DS_FIND_CHILDREN);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3402 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3403 error = dsl_dataset_user_hold_one(dsname, ha);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3404 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3405 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3406 error = dsl_sync_task_group_wait(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3407
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3408 for (dst = list_head(&ha->dstg->dstg_tasks); dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3409 dst = list_next(&ha->dstg->dstg_tasks, dst)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3410 dsl_dataset_t *ds = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3411
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3412 if (dst->dst_err) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3413 dsl_dataset_name(ds, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3414 *strchr(ha->failed, '@') = '\0';
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3415 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3416 dsl_dataset_rele(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3417 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3418
10268
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3419 if (error == 0 && recursive && !ha->gotone)
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3420 error = ENOENT;
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3421
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3422 if (error)
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3423 (void) strlcpy(dsname, ha->failed, sizeof (ha->failed));
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3424
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3425 dsl_sync_task_group_destroy(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3426 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3427 spa_close(spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3428 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3429 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3430
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3431 struct dsl_ds_releasearg {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3432 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3433 const char *htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3434 boolean_t own; /* do we own or just hold ds? */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3435 };
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3436
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3437 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3438 dsl_dataset_release_might_destroy(dsl_dataset_t *ds, const char *htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3439 boolean_t *might_destroy)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3440 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3441 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3442 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3443 uint64_t tmp;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3444 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3445
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3446 *might_destroy = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3447
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3448 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3449 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3450 if (zapobj == 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3451 /* The tag can't possibly exist */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3452 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3453 return (ESRCH);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3454 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3455
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3456 /* Make sure the tag exists */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3457 error = zap_lookup(mos, zapobj, htag, 8, 1, &tmp);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3458 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3459 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3460 if (error == ENOENT)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3461 error = ESRCH;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3462 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3463 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3464
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3465 if (ds->ds_userrefs == 1 && ds->ds_phys->ds_num_children == 1 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3466 DS_IS_DEFER_DESTROY(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3467 *might_destroy = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3468
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3469 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3470 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3471 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3472
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3473 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3474 dsl_dataset_user_release_check(void *arg1, void *tag, dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3475 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3476 struct dsl_ds_releasearg *ra = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3477 dsl_dataset_t *ds = ra->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3478 boolean_t might_destroy;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3479 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3480
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3481 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3482 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3483
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3484 error = dsl_dataset_release_might_destroy(ds, ra->htag, &might_destroy);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3485 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3486 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3487
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3488 if (might_destroy) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3489 struct dsl_ds_destroyarg dsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3490
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3491 if (dmu_tx_is_syncing(tx)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3492 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3493 * If we're not prepared to remove the snapshot,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3494 * we can't allow the release to happen right now.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3495 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3496 if (!ra->own)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3497 return (EBUSY);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3498 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3499 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3500 ds->ds_objset = NULL;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3501 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3502 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3503 dsda.ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3504 dsda.releasing = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3505 return (dsl_dataset_destroy_check(&dsda, tag, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3506 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3507
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3508 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3509 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3510
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3511 static void
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3512 dsl_dataset_user_release_sync(void *arg1, void *tag, cred_t *cr, dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3513 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3514 struct dsl_ds_releasearg *ra = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3515 dsl_dataset_t *ds = ra->ds;
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3516 dsl_pool_t *dp = ds->ds_dir->dd_pool;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3517 objset_t *mos = dp->dp_meta_objset;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3518 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3519 uint64_t dsobj = ds->ds_object;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3520 uint64_t refs;
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3521 int error;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3522
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3523 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3524 ds->ds_userrefs--;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3525 refs = ds->ds_userrefs;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3526 mutex_exit(&ds->ds_lock);
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3527 error = dsl_pool_user_release(dp, ds->ds_object, ra->htag, tx);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3528 VERIFY(error == 0 || error == ENOENT);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3529 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3530 VERIFY(0 == zap_remove(mos, zapobj, ra->htag, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3531 if (ds->ds_userrefs == 0 && ds->ds_phys->ds_num_children == 1 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3532 DS_IS_DEFER_DESTROY(ds)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3533 struct dsl_ds_destroyarg dsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3534
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3535 ASSERT(ra->own);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3536 dsda.ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3537 dsda.releasing = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3538 /* We already did the destroy_check */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3539 dsl_dataset_destroy_sync(&dsda, tag, cr, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3540 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3541
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3542 spa_history_internal_log(LOG_DS_USER_RELEASE,
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3543 dp->dp_spa, tx, cr, "<%s> %lld dataset = %llu",
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3544 ra->htag, (longlong_t)refs, dsobj);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3545 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3546
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3547 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3548 dsl_dataset_user_release_one(const char *dsname, void *arg)
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3549 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3550 struct dsl_ds_holdarg *ha = arg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3551 struct dsl_ds_releasearg *ra;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3552 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3553 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3554 void *dtag = ha->dstg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3555 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3556 boolean_t own = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3557 boolean_t might_destroy;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3558
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3559 /* alloc a buffer to hold dsname@snapname, plus the terminating NULL */
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
3560 name = kmem_asprintf("%s@%s", dsname, ha->snapname);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3561 error = dsl_dataset_hold(name, dtag, &ds);
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
3562 strfree(name);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3563 if (error == ENOENT && ha->recursive)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3564 return (0);
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3565 (void) strlcpy(ha->failed, dsname, sizeof (ha->failed));
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3566 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3567 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3568
10268
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3569 ha->gotone = B_TRUE;
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3570
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3571 ASSERT(dsl_dataset_is_snapshot(ds));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3572
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3573 error = dsl_dataset_release_might_destroy(ds, ha->htag, &might_destroy);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3574 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3575 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3576 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3577 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3578
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3579 if (might_destroy) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3580 #ifdef _KERNEL
12115
3655f38d3bea 6942295 use-after-free panic in dsl_dataset_user_release_one
Chris Kirby <Chris.Kirby@oracle.com>
parents: 11823
diff changeset
3581 name = kmem_asprintf("%s@%s", dsname, ha->snapname);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3582 error = zfs_unmount_snap(name, NULL);
12115
3655f38d3bea 6942295 use-after-free panic in dsl_dataset_user_release_one
Chris Kirby <Chris.Kirby@oracle.com>
parents: 11823
diff changeset
3583 strfree(name);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3584 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3585 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3586 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3587 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3588 #endif
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3589 if (!dsl_dataset_tryown(ds, B_TRUE, dtag)) {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3590 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3591 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3592 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3593 own = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3594 dsl_dataset_make_exclusive(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3595 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3596 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3597
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3598 ra = kmem_alloc(sizeof (struct dsl_ds_releasearg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3599 ra->ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3600 ra->htag = ha->htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3601 ra->own = own;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3602 dsl_sync_task_create(ha->dstg, dsl_dataset_user_release_check,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3603 dsl_dataset_user_release_sync, ra, dtag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3604
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3605 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3606 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3607
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3608 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3609 dsl_dataset_user_release(char *dsname, char *snapname, char *htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3610 boolean_t recursive)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3611 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3612 struct dsl_ds_holdarg *ha;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3613 dsl_sync_task_t *dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3614 spa_t *spa;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3615 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3616
11546
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3617 top:
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3618 ha = kmem_zalloc(sizeof (struct dsl_ds_holdarg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3619
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3620 (void) strlcpy(ha->failed, dsname, sizeof (ha->failed));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3621
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3622 error = spa_open(dsname, &spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3623 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3624 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3625 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3626 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3627
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3628 ha->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3629 ha->htag = htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3630 ha->snapname = snapname;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3631 ha->recursive = recursive;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3632 if (recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3633 error = dmu_objset_find(dsname, dsl_dataset_user_release_one,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3634 ha, DS_FIND_CHILDREN);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3635 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3636 error = dsl_dataset_user_release_one(dsname, ha);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3637 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3638 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3639 error = dsl_sync_task_group_wait(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3640
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3641 for (dst = list_head(&ha->dstg->dstg_tasks); dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3642 dst = list_next(&ha->dstg->dstg_tasks, dst)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3643 struct dsl_ds_releasearg *ra = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3644 dsl_dataset_t *ds = ra->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3645
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3646 if (dst->dst_err)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3647 dsl_dataset_name(ds, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3648
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3649 if (ra->own)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3650 dsl_dataset_disown(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3651 else
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3652 dsl_dataset_rele(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3653
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3654 kmem_free(ra, sizeof (struct dsl_ds_releasearg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3655 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3656
10268
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3657 if (error == 0 && recursive && !ha->gotone)
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3658 error = ENOENT;
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot
Chris Kirby <chris.kirby@sun.com>
parents: 10242
diff changeset
3659
11546
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3660 if (error && error != EBUSY)
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3661 (void) strlcpy(dsname, ha->failed, sizeof (ha->failed));
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3662
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3663 dsl_sync_task_group_destroy(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3664 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3665 spa_close(spa, FTAG);
11546
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3666
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3667 /*
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3668 * We can get EBUSY if we were racing with deferred destroy and
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3669 * dsl_dataset_user_release_check() hadn't done the necessary
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3670 * open context setup. We can also get EBUSY if we're racing
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3671 * with destroy and that thread is the ds_owner. Either way
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3672 * the busy condition should be transient, and we should retry
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3673 * the release operation.
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3674 */
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3675 if (error == EBUSY)
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3676 goto top;
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
3677
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3678 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3679 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3680
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3681 /*
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3682 * Called at spa_load time to release a stale temporary user hold.
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3683 */
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3684 int
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3685 dsl_dataset_user_release_tmp(dsl_pool_t *dp, uint64_t dsobj, char *htag)
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3686 {
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3687 dsl_dataset_t *ds;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3688 char *snap;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3689 char *name;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3690 int namelen;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3691 int error;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3692
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3693 rw_enter(&dp->dp_config_rwlock, RW_READER);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3694 error = dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3695 rw_exit(&dp->dp_config_rwlock);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3696 if (error)
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3697 return (error);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3698 namelen = dsl_dataset_namelen(ds)+1;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3699 name = kmem_alloc(namelen, KM_SLEEP);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3700 dsl_dataset_name(ds, name);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3701 dsl_dataset_rele(ds, FTAG);
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3702
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3703 snap = strchr(name, '@');
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3704 *snap = '\0';
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3705 ++snap;
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3706 return (dsl_dataset_user_release(name, snap, htag, B_FALSE));
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3707 }
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3708
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3709 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3710 dsl_dataset_get_holds(const char *dsname, nvlist_t **nvp)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3711 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3712 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3713 int err;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3714
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3715 err = dsl_dataset_hold(dsname, FTAG, &ds);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3716 if (err)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3717 return (err);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3718
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3719 VERIFY(0 == nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3720 if (ds->ds_phys->ds_userrefs_obj != 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3721 zap_attribute_t *za;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3722 zap_cursor_t zc;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3723
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3724 za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3725 for (zap_cursor_init(&zc, ds->ds_dir->dd_pool->dp_meta_objset,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3726 ds->ds_phys->ds_userrefs_obj);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3727 zap_cursor_retrieve(&zc, za) == 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3728 zap_cursor_advance(&zc)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3729 VERIFY(0 == nvlist_add_uint64(*nvp, za->za_name,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3730 za->za_first_integer));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3731 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3732 zap_cursor_fini(&zc);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3733 kmem_free(za, sizeof (zap_attribute_t));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3734 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3735 dsl_dataset_rele(ds, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3736 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3737 }
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3738
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3739 /*
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3740 * Note, this fuction is used as the callback for dmu_objset_find(). We
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3741 * always return 0 so that we will continue to find and process
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3742 * inconsistent datasets, even if we encounter an error trying to
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3743 * process one of them.
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3744 */
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3745 /* ARGSUSED */
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3746 int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3747 dsl_destroy_inconsistent(const char *dsname, void *arg)
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3748 {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3749 dsl_dataset_t *ds;
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3750
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3751 if (dsl_dataset_own(dsname, B_TRUE, FTAG, &ds) == 0) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3752 if (DS_IS_INCONSISTENT(ds))
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3753 (void) dsl_dataset_destroy(ds, FTAG, B_FALSE);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3754 else
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3755 dsl_dataset_disown(ds, FTAG);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3756 }
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3757 return (0);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3758 }