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annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 11609:3b5da7ebb54d

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6920880 assertion failure in dbuf_write_ready() 6921413 want mdb dcmd to print out zap leaf on-disk structure
author Matthew Ahrens <Matthew.Ahrens@Sun.COM>
date Mon, 01 Feb 2010 10:24:18 -0800
parents 42ea6be8961b
children 6f890435df16
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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 2010 Sun Microsystems, Inc. All rights reserved.
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23 * Use is subject to license terms.
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24 */
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25
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26 #include <sys/dmu_objset.h>
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27 #include <sys/dsl_dataset.h>
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28 #include <sys/dsl_dir.h>
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29 #include <sys/dsl_prop.h>
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30 #include <sys/dsl_synctask.h>
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31 #include <sys/dmu_traverse.h>
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32 #include <sys/dmu_tx.h>
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33 #include <sys/arc.h>
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34 #include <sys/zio.h>
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35 #include <sys/zap.h>
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36 #include <sys/unique.h>
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37 #include <sys/zfs_context.h>
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38 #include <sys/zfs_ioctl.h>
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39 #include <sys/spa.h>
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40 #include <sys/zfs_znode.h>
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41 #include <sys/zvol.h>
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42
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43 static char *dsl_reaper = "the grim reaper";
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44
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45 static dsl_checkfunc_t dsl_dataset_destroy_begin_check;
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46 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync;
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47 static dsl_syncfunc_t dsl_dataset_set_reservation_sync;
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48
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49 #define DS_REF_MAX (1ULL << 62)
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50
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51 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE
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52
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53 #define DSL_DATASET_IS_DESTROYED(ds) ((ds)->ds_owner == dsl_reaper)
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54
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55
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56 /*
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57 * Figure out how much of this delta should be propogated to the dsl_dir
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58 * layer. If there's a refreservation, that space has already been
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59 * partially accounted for in our ancestors.
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60 */
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61 static int64_t
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62 parent_delta(dsl_dataset_t *ds, int64_t delta)
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63 {
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64 uint64_t old_bytes, new_bytes;
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65
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66 if (ds->ds_reserved == 0)
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67 return (delta);
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68
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69 old_bytes = MAX(ds->ds_phys->ds_unique_bytes, ds->ds_reserved);
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70 new_bytes = MAX(ds->ds_phys->ds_unique_bytes + delta, ds->ds_reserved);
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71
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72 ASSERT3U(ABS((int64_t)(new_bytes - old_bytes)), <=, ABS(delta));
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73 return (new_bytes - old_bytes);
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74 }
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75
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76 void
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77 dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx)
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78 {
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79 int used = bp_get_dsize_sync(tx->tx_pool->dp_spa, bp);
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80 int compressed = BP_GET_PSIZE(bp);
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81 int uncompressed = BP_GET_UCSIZE(bp);
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82 int64_t delta;
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83
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84 dprintf_bp(bp, "born, ds=%p\n", ds);
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85
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86 ASSERT(dmu_tx_is_syncing(tx));
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87 /* It could have been compressed away to nothing */
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88 if (BP_IS_HOLE(bp))
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89 return;
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90 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE);
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91 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES);
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92 if (ds == NULL) {
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93 /*
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94 * Account for the meta-objset space in its placeholder
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95 * dsl_dir.
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96 */
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97 ASSERT3U(compressed, ==, uncompressed); /* it's all metadata */
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98 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
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99 used, compressed, uncompressed, tx);
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100 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
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101 return;
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102 }
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103 dmu_buf_will_dirty(ds->ds_dbuf, tx);
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104 mutex_enter(&ds->ds_dir->dd_lock);
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105 mutex_enter(&ds->ds_lock);
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106 delta = parent_delta(ds, used);
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107 ds->ds_phys->ds_used_bytes += used;
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108 ds->ds_phys->ds_compressed_bytes += compressed;
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109 ds->ds_phys->ds_uncompressed_bytes += uncompressed;
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110 ds->ds_phys->ds_unique_bytes += used;
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111 mutex_exit(&ds->ds_lock);
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112 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, delta,
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113 compressed, uncompressed, tx);
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114 dsl_dir_transfer_space(ds->ds_dir, used - delta,
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115 DD_USED_REFRSRV, DD_USED_HEAD, tx);
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116 mutex_exit(&ds->ds_dir->dd_lock);
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117 }
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118
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119 int
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120 dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,
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121 boolean_t async)
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122 {
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123 if (BP_IS_HOLE(bp))
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124 return (0);
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125
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126 ASSERT(dmu_tx_is_syncing(tx));
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127 ASSERT(bp->blk_birth <= tx->tx_txg);
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128
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129 int used = bp_get_dsize_sync(tx->tx_pool->dp_spa, bp);
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130 int compressed = BP_GET_PSIZE(bp);
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131 int uncompressed = BP_GET_UCSIZE(bp);
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132
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133 ASSERT(used > 0);
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134 if (ds == NULL) {
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135 /*
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136 * Account for the meta-objset space in its placeholder
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137 * dataset.
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138 */
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139 dsl_free(tx->tx_pool, tx->tx_txg, bp);
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140
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141 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
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142 -used, -compressed, -uncompressed, tx);
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143 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
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144 return (used);
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145 }
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146 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool);
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147
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148 ASSERT(!dsl_dataset_is_snapshot(ds));
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149 dmu_buf_will_dirty(ds->ds_dbuf, tx);
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150
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151 if (bp->blk_birth > ds->ds_phys->ds_prev_snap_txg) {
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152 int64_t delta;
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153
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154 dprintf_bp(bp, "freeing: %s", "");
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155 dsl_free(tx->tx_pool, tx->tx_txg, bp);
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156
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157 mutex_enter(&ds->ds_dir->dd_lock);
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158 mutex_enter(&ds->ds_lock);
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159 ASSERT(ds->ds_phys->ds_unique_bytes >= used ||
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160 !DS_UNIQUE_IS_ACCURATE(ds));
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161 delta = parent_delta(ds, -used);
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162 ds->ds_phys->ds_unique_bytes -= used;
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163 mutex_exit(&ds->ds_lock);
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6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
164 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
165 delta, -compressed, -uncompressed, tx);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
166 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
167 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
168 mutex_exit(&ds->ds_dir->dd_lock);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
169 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
170 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
171 if (async) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
172 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
173 * 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
174 * 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
175 * 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
176 * 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
177 * 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
178 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
179 bplist_enqueue_deferred(&ds->ds_deadlist, bp);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
180 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
181 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
182 }
5712
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
183 ASSERT3U(ds->ds_prev->ds_object, ==,
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
184 ds->ds_phys->ds_prev_snap_obj);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
185 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
186 /* 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
187 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
188 ds->ds_object && bp->blk_birth >
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
189 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
190 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
191 mutex_enter(&ds->ds_prev->ds_lock);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown
ahrens
parents: 5569
diff changeset
192 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
193 mutex_exit(&ds->ds_prev->ds_lock);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
194 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
195 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
196 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
197 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
198 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
199 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
200 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
201 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
202 ds->ds_phys->ds_used_bytes -= used;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
203 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
204 ds->ds_phys->ds_compressed_bytes -= compressed;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
205 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
206 ds->ds_phys->ds_uncompressed_bytes -= uncompressed;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
207 mutex_exit(&ds->ds_lock);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
208
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
209 return (used);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
210 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
211
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
212 uint64_t
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
213 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
214 {
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
215 uint64_t trysnap = 0;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
216
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
217 if (ds == NULL)
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
218 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
219 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
220 * The snapshot creation could fail, but that would cause an
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
221 * incorrect FALSE return, which would only result in an
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
222 * overestimation of the amount of space that an operation would
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
223 * consume, which is OK.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
224 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
225 * There's also a small window where we could miss a pending
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
226 * snapshot, because we could set the sync task in the quiescing
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
227 * phase. So this should only be used as a guess.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
228 */
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
229 if (ds->ds_trysnap_txg >
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
230 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa))
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
231 trysnap = ds->ds_trysnap_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
232 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap));
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
233 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
234
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
235 boolean_t
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
236 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
237 {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
238 return (blk_birth > dsl_dataset_prev_snap_txg(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
239 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
240
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
241 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
242 static void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
243 dsl_dataset_evict(dmu_buf_t *db, void *dsv)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
244 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
245 dsl_dataset_t *ds = dsv;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
246
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
247 ASSERT(ds->ds_owner == NULL || DSL_DATASET_IS_DESTROYED(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
248
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
249 unique_remove(ds->ds_fsid_guid);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
250
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
251 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
252 dmu_objset_evict(ds->ds_objset);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
253
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
254 if (ds->ds_prev) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
255 dsl_dataset_drop_ref(ds->ds_prev, ds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
256 ds->ds_prev = NULL;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
257 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
258
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
259 bplist_close(&ds->ds_deadlist);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
260 if (ds->ds_dir)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
261 dsl_dir_close(ds->ds_dir, ds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
262
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
263 ASSERT(!list_link_active(&ds->ds_synced_link));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
264
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
265 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
266 mutex_destroy(&ds->ds_recvlock);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
267 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
268 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
269 cv_destroy(&ds->ds_exclusive_cv);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
270 bplist_fini(&ds->ds_deadlist);
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
271
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
272 kmem_free(ds, sizeof (dsl_dataset_t));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
273 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
274
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
275 static int
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
276 dsl_dataset_get_snapname(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
277 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
278 dsl_dataset_phys_t *headphys;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
279 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
280 dmu_buf_t *headdbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
281 dsl_pool_t *dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
282 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
283
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
284 if (ds->ds_snapname[0])
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
285 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
286 if (ds->ds_phys->ds_next_snap_obj == 0)
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
287 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
288
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
289 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
290 FTAG, &headdbuf);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
291 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
292 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
293 headphys = headdbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
294 err = zap_value_search(dp->dp_meta_objset,
4577
ed36b0e652bc PSARC/2007/328 zfs upgrade
ahrens
parents: 4569
diff changeset
295 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
296 dmu_buf_rele(headdbuf, FTAG);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
297 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
298 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
299
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
300 static int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
301 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
302 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
303 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
304 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
305 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
306 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
307
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
308 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
309 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
310 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
311 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
312
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
313 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
314 value, mt, NULL, 0, NULL);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
315 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
316 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
317 return (err);
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
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
320 static int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
321 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
322 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
323 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
324 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
325 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
326 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
327
10373
bcf97ee54990 6395956 snapshot dir needs real c/mtime
Chris Kirby <chris.kirby@sun.com>
parents: 10342
diff changeset
328 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
329
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
330 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
331 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
332 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
333 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
334
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
335 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
336 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
337 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
338 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
339 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
340
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
341 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
342 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
343 dsl_dataset_t **dsp)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
344 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
345 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
346 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
347 dsl_dataset_t *ds;
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
348 int err;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
349
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
350 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) ||
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
351 dsl_pool_sync_context(dp));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
352
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
353 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
354 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
355 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
356 ds = dmu_buf_get_user(dbuf);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
357 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
358 dsl_dataset_t *winner;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
359
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
360 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
361 ds->ds_dbuf = dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
362 ds->ds_object = dsobj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
363 ds->ds_phys = dbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
364
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
365 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
366 mutex_init(&ds->ds_recvlock, NULL, MUTEX_DEFAULT, NULL);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
367 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
368 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
369 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
370 bplist_init(&ds->ds_deadlist);
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
371
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
372 err = bplist_open(&ds->ds_deadlist,
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
373 mos, ds->ds_phys->ds_deadlist_obj);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
374 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
375 err = dsl_dir_open_obj(dp,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
376 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
377 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
378 if (err) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
379 /*
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
380 * we don't really need to close the blist if we
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
381 * just opened it.
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
382 */
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
383 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
384 mutex_destroy(&ds->ds_recvlock);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
385 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
386 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
387 cv_destroy(&ds->ds_exclusive_cv);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
388 bplist_fini(&ds->ds_deadlist);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
389 kmem_free(ds, sizeof (dsl_dataset_t));
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
390 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
391 return (err);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
392 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
393
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
394 if (!dsl_dataset_is_snapshot(ds)) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
395 ds->ds_snapname[0] = '\0';
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
396 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
397 err = dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
398 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
399 ds, &ds->ds_prev);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
400 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
401
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
402 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
403 dsl_dataset_t *origin;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
404
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
405 err = dsl_dataset_hold_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
406 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
407 FTAG, &origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
408 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
409 ds->ds_origin_txg =
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
410 origin->ds_phys->ds_creation_txg;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
411 dsl_dataset_rele(origin, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
412 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
413 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
414 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
415 if (zfs_flags & ZFS_DEBUG_SNAPNAMES)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
416 err = dsl_dataset_get_snapname(ds);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
417 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
418 err = zap_count(
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
419 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
420 ds->ds_phys->ds_userrefs_obj,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
421 &ds->ds_userrefs);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
422 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
423 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
424
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
425 if (err == 0 && !dsl_dataset_is_snapshot(ds)) {
5569
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
426 /*
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
427 * 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
428 * 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
429 * we're always called with the read lock held.
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
430 */
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
431 boolean_t need_lock =
5569
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
432 !RW_WRITE_HELD(&dp->dp_config_rwlock) &&
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
ck153898
parents: 5518
diff changeset
433 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
434
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 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
436 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
437
7265
cc18862247da PSARC/2008/483 ZFS clone -o
ahrens
parents: 7237
diff changeset
438 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
439 "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
440 &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
441 if (err == 0) {
7265
cc18862247da PSARC/2008/483 ZFS clone -o
ahrens
parents: 7237
diff changeset
442 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
443 "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
444 &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
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
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 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
448 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
449 } 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
450 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
451 }
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d
ck153898
parents: 5446
diff changeset
452
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
453 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
454 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
455 dsl_dataset_evict);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
456 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
457 if (err || winner) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
458 bplist_close(&ds->ds_deadlist);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
459 if (ds->ds_prev)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
460 dsl_dataset_drop_ref(ds->ds_prev, ds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
461 dsl_dir_close(ds->ds_dir, ds);
2856
6f4d5ee1906a 6463348 ZFS code could be more portable
nd150628
parents: 2532
diff changeset
462 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
463 mutex_destroy(&ds->ds_recvlock);
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
464 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
465 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
466 cv_destroy(&ds->ds_exclusive_cv);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
467 bplist_fini(&ds->ds_deadlist);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
468 kmem_free(ds, sizeof (dsl_dataset_t));
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
469 if (err) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
470 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
471 return (err);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
472 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
473 ds = winner;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
474 } else {
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
475 ds->ds_fsid_guid =
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
476 unique_insert(ds->ds_phys->ds_fsid_guid);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
477 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
478 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
479 ASSERT3P(ds->ds_dbuf, ==, dbuf);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
480 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
481 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
482 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
483 dp->dp_origin_snap == NULL || ds == dp->dp_origin_snap);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
484 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
485 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
486 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
487 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
488 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
489 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
490 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
491 *dsp = ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
492 return (0);
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
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
495 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
496 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
497 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
498 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
499
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
500 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
501 * 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
502 * 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
503 * 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
504 * 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
505 * doing anything while we are active.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
506 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
507 if (dsl_pool_sync_context(dp)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
508 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
509 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
510 }
6689
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 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
513 * 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
514 * 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
515 * 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
516 *
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
517 * 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
518 * 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
519 * 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
520 * 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
521 * 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
522 * the dataset is determined.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
523 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
524 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
525 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
526 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
527 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
528 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
529 if (DSL_DATASET_IS_DESTROYED(ds)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
530 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
531 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
532 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
533 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
534 }
11546
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
535 /*
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
536 * 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
537 * 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
538 * 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
539 * the ds_lock here.
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
540 */
42ea6be8961b 6915111 zfs_iter_snapshots() can miss snapshots
Chris Kirby <Chris.Kirby@sun.com>
parents: 11209
diff changeset
541 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
542 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
543 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
544 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
545 mutex_exit(&ds->ds_lock);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
546 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
547 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
548
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
549 int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
550 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
551 dsl_dataset_t **dsp)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
552 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
553 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
554
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
555 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
556 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
557 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
558 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
559
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
560 int
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
561 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
562 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
563 {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
564 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
565 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
566 return (err);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
567 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
568 dsl_dataset_rele(*dsp, tag);
8779
f164e0e90508 6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents: 8746
diff changeset
569 *dsp = NULL;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
570 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
571 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
572 return (0);
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
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
575 int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
576 dsl_dataset_hold(const char *name, void *tag, dsl_dataset_t **dsp)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
577 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
578 dsl_dir_t *dd;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
579 dsl_pool_t *dp;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
580 const char *snapname;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
581 uint64_t obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
582 int err = 0;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
583
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
584 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
585 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
586 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
587
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
588 dp = dd->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
589 obj = dd->dd_phys->dd_head_dataset_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
590 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
591 if (obj)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
592 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
593 else
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
594 err = ENOENT;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
595 if (err)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
596 goto out;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
597
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
598 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
599
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
600 /* 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
601 if (err == 0 && snapname != NULL) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
602 dsl_dataset_t *ds = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
603
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
604 if (*snapname++ != '@') {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
605 dsl_dataset_rele(*dsp, tag);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
606 err = ENOENT;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
607 goto out;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
608 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
609
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
610 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
611 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
612 if (err == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
613 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
614 dsl_dataset_rele(*dsp, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
615
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
616 ASSERT3U((err == 0), ==, (ds != NULL));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
617
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
618 if (ds) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
619 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
620 if (ds->ds_snapname[0] == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
621 (void) strlcpy(ds->ds_snapname, snapname,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
622 sizeof (ds->ds_snapname));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
623 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
624 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
625 *dsp = err ? NULL : ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
626 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
627 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
628 out:
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
629 rw_exit(&dp->dp_config_rwlock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
630 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
631 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
632 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
633
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
634 int
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
635 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
636 void *tag, dsl_dataset_t **dsp)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
637 {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
638 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
639 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
640 return (err);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
641 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
642 dsl_dataset_rele(*dsp, tag);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
643 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
644 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
645 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
646 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
647
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
648 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
649 dsl_dataset_name(dsl_dataset_t *ds, char *name)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
650 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
651 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
652 (void) strcpy(name, "mos");
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
653 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
654 dsl_dir_name(ds->ds_dir, name);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
655 VERIFY(0 == dsl_dataset_get_snapname(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
656 if (ds->ds_snapname[0]) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
657 (void) strcat(name, "@");
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
658 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
659 * 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
660 * 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
661 */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
662 if (!MUTEX_HELD(&ds->ds_lock)) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
663 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
664 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
665 mutex_exit(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
666 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
667 (void) strcat(name, ds->ds_snapname);
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 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
672
3978
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
673 static int
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
674 dsl_dataset_namelen(dsl_dataset_t *ds)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
675 {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
676 int result;
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
677
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
678 if (ds == NULL) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
679 result = 3; /* "mos" */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
680 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
681 result = dsl_dir_namelen(ds->ds_dir);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
682 VERIFY(0 == dsl_dataset_get_snapname(ds));
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
683 if (ds->ds_snapname[0]) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
684 ++result; /* adding one for the @-sign */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
685 if (!MUTEX_HELD(&ds->ds_lock)) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
686 mutex_enter(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
687 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
688 mutex_exit(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
689 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
690 result += strlen(ds->ds_snapname);
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
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
695 return (result);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
696 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
697
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
698 void
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
699 dsl_dataset_drop_ref(dsl_dataset_t *ds, void *tag)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
700 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
701 dmu_buf_rele(ds->ds_dbuf, tag);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
702 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
703
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
704 void
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
705 dsl_dataset_rele(dsl_dataset_t *ds, void *tag)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
706 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
707 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
708 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
709 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
710 dsl_dataset_drop_ref(ds, tag);
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
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
713 void
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
714 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
715 {
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
716 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
717 (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
718
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
719 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
720 ds->ds_owner = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
721 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
722 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
723 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
724 }
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
725 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
726 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
727 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
728 else
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
729 dsl_dataset_evict(ds->ds_dbuf, ds);
5367
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
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
732 boolean_t
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
733 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
734 {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
735 boolean_t gotit = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
736
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
737 mutex_enter(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
738 if (ds->ds_owner == NULL &&
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
739 (!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
740 ds->ds_owner = tag;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
741 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
742 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
743 gotit = TRUE;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
744 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
745 mutex_exit(&ds->ds_lock);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
746 return (gotit);
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
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
749 void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
750 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
751 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
752 ASSERT3P(owner, ==, ds->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
753 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
754 rw_enter(&ds->ds_rwlock, RW_WRITER);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
755 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
756
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
757 uint64_t
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
758 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
759 uint64_t flags, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
760 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
761 dsl_pool_t *dp = dd->dd_pool;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
762 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
763 dsl_dataset_phys_t *dsphys;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
764 uint64_t dsobj;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
765 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
766
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
767 if (origin == NULL)
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
768 origin = dp->dp_origin_snap;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
769
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
770 ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
771 ASSERT(origin == NULL || origin->ds_phys->ds_num_children > 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
772 ASSERT(dmu_tx_is_syncing(tx));
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
773 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
774
928
36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents: 885
diff changeset
775 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
776 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
777 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
778 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
779 dsphys = dbuf->db_data;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
780 bzero(dsphys, sizeof (dsl_dataset_phys_t));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
781 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
782 dsphys->ds_flags = flags;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
783 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
784 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
785 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
786 dsphys->ds_snapnames_zapobj =
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
787 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
788 DMU_OT_NONE, 0, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
789 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
790 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
791 dsphys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
792 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
793
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
794 if (origin) {
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
795 dsphys->ds_prev_snap_obj = origin->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
796 dsphys->ds_prev_snap_txg =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
797 origin->ds_phys->ds_creation_txg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
798 dsphys->ds_used_bytes =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
799 origin->ds_phys->ds_used_bytes;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
800 dsphys->ds_compressed_bytes =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
801 origin->ds_phys->ds_compressed_bytes;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
802 dsphys->ds_uncompressed_bytes =
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
803 origin->ds_phys->ds_uncompressed_bytes;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
804 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
805 dsphys->ds_flags |= origin->ds_phys->ds_flags;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
806
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
807 dmu_buf_will_dirty(origin->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
808 origin->ds_phys->ds_num_children++;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
809
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
810 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
811 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
812 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
813 zap_create(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
814 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
815 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
816 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
817 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
818 dsobj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
819 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
820
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
821 dmu_buf_will_dirty(dd->dd_dbuf, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
822 dd->dd_phys->dd_origin_obj = origin->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
823 }
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
824
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
825 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
826 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
827
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
828 dmu_buf_rele(dbuf, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
829
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
830 dmu_buf_will_dirty(dd->dd_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
831 dd->dd_phys->dd_head_dataset_obj = dsobj;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
832
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
833 return (dsobj);
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
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
836 uint64_t
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
837 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
838 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
839 {
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
840 dsl_pool_t *dp = pdd->dd_pool;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
841 uint64_t dsobj, ddobj;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
842 dsl_dir_t *dd;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
843
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
844 ASSERT(lastname[0] != '@');
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
845
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
846 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
847 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd));
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
848
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
849 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
850
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
851 dsl_deleg_set_create_perms(dd, tx, cr);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
852
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
853 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
854
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
855 return (dsobj);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
856 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
857
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
858 struct destroyarg {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
859 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
860 char *snapname;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
861 char *failed;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
862 boolean_t defer;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
863 };
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
864
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
865 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
866 dsl_snapshot_destroy_one(const char *name, void *arg)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
867 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
868 struct destroyarg *da = arg;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
869 dsl_dataset_t *ds;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
870 int err;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
871 char *dsname;
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
872
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
873 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
874 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
875 strfree(dsname);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
876 if (err == 0) {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
877 struct dsl_ds_destroyarg *dsda;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
878
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
879 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
880 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
881 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
882 ds->ds_objset = NULL;
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
883 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
884 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
885 dsda->ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
886 dsda->defer = da->defer;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
887 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
888 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
889 } else if (err == ENOENT) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
890 err = 0;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
891 } else {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
892 (void) strcpy(da->failed, name);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
893 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
894 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
895 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
896
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
897 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
898 * Destroy 'snapname' in all descendants of 'fsname'.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
899 */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
900 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
901 int
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
902 dsl_snapshots_destroy(char *fsname, char *snapname, boolean_t defer)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
903 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
904 int err;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
905 struct destroyarg da;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
906 dsl_sync_task_t *dst;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
907 spa_t *spa;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
908
4603
c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents: 4577
diff changeset
909 err = spa_open(fsname, &spa, FTAG);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
910 if (err)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
911 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
912 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
913 da.snapname = snapname;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
914 da.failed = fsname;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
915 da.defer = defer;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
916
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
917 err = dmu_objset_find(fsname,
2417
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
918 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
919
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
920 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
921 err = dsl_sync_task_group_wait(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
922
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
923 for (dst = list_head(&da.dstg->dstg_tasks); dst;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
924 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
925 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
926 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
927
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
928 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
929 * 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
930 */
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
931 if (dst->dst_err) {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
932 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
933 *strchr(fsname, '@') = '\0';
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
934 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
935 ASSERT3P(dsda->rm_origin, ==, NULL);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
936 dsl_dataset_disown(ds, da.dstg);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
937 kmem_free(dsda, sizeof (struct dsl_ds_destroyarg));
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
938 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
939
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
940 dsl_sync_task_group_destroy(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
941 spa_close(spa, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
942 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
943 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
944
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
945 static boolean_t
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
946 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
947 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
948 boolean_t might_destroy = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
949
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
950 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
951 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
952 DS_IS_DEFER_DESTROY(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
953 might_destroy = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
954 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
955
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
956 return (might_destroy);
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 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
960 * 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
961 * 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
962 * 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
963 * 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
964 * 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
965 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
966 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
967 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
968 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
969 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
970 dsl_dataset_t *origin = ds->ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
971
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
972 if (dsl_dataset_might_destroy_origin(origin)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
973 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
974 int namelen;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
975 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
976
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
977 namelen = dsl_dataset_namelen(origin) + 1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
978 name = kmem_alloc(namelen, KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
979 dsl_dataset_name(origin, name);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
980 #ifdef _KERNEL
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
981 error = zfs_unmount_snap(name, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
982 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
983 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
984 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
985 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
986 #endif
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
987 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
988 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
989 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
990 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
991 dsda->rm_origin = origin;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
992 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
993
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
994 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
995 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
996 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
997 }
10242
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
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1000 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1001 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1002
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1003 /*
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1004 * 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
1005 * ds will be closed and caller can no longer dereference it.
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1006 */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1007 int
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1008 dsl_dataset_destroy(dsl_dataset_t *ds, void *tag, boolean_t defer)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1009 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1010 int err;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1011 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1012 objset_t *os;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1013 dsl_dir_t *dd;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1014 uint64_t obj;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1015 struct dsl_ds_destroyarg dsda = { 0 };
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1016 dsl_dataset_t dummy_ds = { 0 };
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1017
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1018 dsda.ds = ds;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1019
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1020 if (dsl_dataset_is_snapshot(ds)) {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1021 /* Destroying a snapshot is simpler */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1022 dsl_dataset_make_exclusive(ds, tag);
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
1023
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1024 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
1025 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
1026 ds->ds_objset = NULL;
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
1027 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1028 dsda.defer = defer;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1029 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1030 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
1031 &dsda, tag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1032 ASSERT3P(dsda.rm_origin, ==, NULL);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1033 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
1034 } 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
1035 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
1036 goto out;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1037 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1038
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1039 dd = ds->ds_dir;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1040 dummy_ds.ds_dir = dd;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1041 dummy_ds.ds_object = ds->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1042
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1043 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1044 * Check for errors and mark this ds as inconsistent, in
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1045 * case we crash while freeing the objects.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1046 */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1047 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check,
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1048 dsl_dataset_destroy_begin_sync, ds, NULL, 0);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1049 if (err)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1050 goto out;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1051
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1052 err = dmu_objset_from_ds(ds, &os);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1053 if (err)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1054 goto out;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1055
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1056 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1057 * remove the objects in open context, so that we won't
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1058 * have too much to do in syncing context.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1059 */
3025
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents: 2885
diff changeset
1060 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
1061 ds->ds_phys->ds_prev_snap_txg)) {
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1062 /*
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1063 * Ignore errors, if there is not enough disk space
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1064 * 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
1065 */
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 6975
diff changeset
1066 (void) dmu_free_object(os, obj);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1067 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1068
9396
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1069 /*
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1070 * 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
1071 * (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
1072 * 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
1073 */
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1074 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
1075
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1076 /*
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1077 * 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
1078 * 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
1079 */
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1080 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
1081 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
1082 uint64_t count;
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1083
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1084 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
1085 count == 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1086 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
1087 count == 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1088 }
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 9390
diff changeset
1089
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1090 if (err != ESRCH)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1091 goto out;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1092
6975
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1093 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
1094 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
1095 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
1096
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1097 if (err)
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1098 goto out;
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1099
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1100 if (ds->ds_objset) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1101 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1102 * 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
1103 * 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
1104 * 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
1105 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1106 txg_wait_synced(dd->dd_pool, 0);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1107 }
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1108
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1109 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1110 * Blow away the dsl_dir + head dataset.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1111 */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1112 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
1113 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1114 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
1115 ds->ds_objset = NULL;
6975
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents: 6689
diff changeset
1116 }
10242
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 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1119 * 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
1120 * origin.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1121 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1122 do {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1123 dsda.need_prep = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1124 if (dsl_dir_is_clone(dd)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1125 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
1126 if (err) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1127 dsl_dir_close(dd, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1128 goto out;
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
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1132 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
1133 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
1134 dsl_dataset_destroy_sync, &dsda, tag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1135 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
1136 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
1137 err = dsl_sync_task_group_wait(dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1138 dsl_sync_task_group_destroy(dstg);
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 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1141 * 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
1142 * 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
1143 * 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
1144 * do so.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1145 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1146 if (dsda.need_prep) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1147 ASSERT(err == EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1148 ASSERT(dsl_dir_is_clone(dd));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1149 ASSERT(dsda.rm_origin == NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1150 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1151 } while (dsda.need_prep);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1152
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1153 if (dsda.rm_origin != NULL)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1154 dsl_dataset_disown(dsda.rm_origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1155
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1156 /* 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
1157 if (err)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1158 dsl_dir_close(dd, FTAG);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1159 out:
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1160 dsl_dataset_disown(ds, tag);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1161 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1162 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1163
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1164 blkptr_t *
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1165 dsl_dataset_get_blkptr(dsl_dataset_t *ds)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1166 {
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1167 return (&ds->ds_phys->ds_bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1168 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1169
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1170 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1171 dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1172 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1173 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1174 /* If it's the meta-objset, set dp_meta_rootbp */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1175 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1176 tx->tx_pool->dp_meta_rootbp = *bp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1177 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1178 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1179 ds->ds_phys->ds_bp = *bp;
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
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1183 spa_t *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1184 dsl_dataset_get_spa(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1185 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1186 return (ds->ds_dir->dd_pool->dp_spa);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1187 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1188
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1189 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1190 dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1191 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1192 dsl_pool_t *dp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1193
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1194 if (ds == NULL) /* this is the meta-objset */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1195 return;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1196
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
1197 ASSERT(ds->ds_objset != NULL);
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
1198
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
1199 if (ds->ds_phys->ds_next_snap_obj != 0)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
1200 panic("dirtying snapshot!");
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1201
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1202 dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1203
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1204 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1205 /* up the hold count until we can be written out */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1206 dmu_buf_add_ref(ds->ds_dbuf, ds);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1207 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1208 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1209
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1210 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1211 * 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
1212 * 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
1213 * 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
1214 * 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
1215 * 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
1216 * has been freed up since the snapshot was taken.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1217 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1218 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1219 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1220 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1221 uint64_t mrs_used;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1222 uint64_t dlused, dlcomp, dluncomp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1223
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1224 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
1225
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1226 if (ds->ds_phys->ds_prev_snap_obj != 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1227 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
1228 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1229 mrs_used = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1230
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1231 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1232 &dluncomp));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1233
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1234 ASSERT3U(dlused, <=, mrs_used);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1235 ds->ds_phys->ds_unique_bytes =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1236 ds->ds_phys->ds_used_bytes - (mrs_used - dlused);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1237
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1238 if (!DS_UNIQUE_IS_ACCURATE(ds) &&
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1239 spa_version(ds->ds_dir->dd_pool->dp_spa) >=
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1240 SPA_VERSION_UNIQUE_ACCURATE)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1241 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;
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
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1244 static uint64_t
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1245 dsl_dataset_unique(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1246 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1247 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
1248 dsl_dataset_recalc_head_uniq(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1249
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1250 return (ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1251 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1252
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1253 struct killarg {
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1254 dsl_dataset_t *ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1255 dmu_tx_t *tx;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1256 };
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1257
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1258 /* ARGSUSED */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1259 static int
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1260 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
1261 const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1262 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1263 struct killarg *ka = arg;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1264 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
1265
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
1266 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
1267 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1268
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1269 if (zb->zb_level == ZB_ZIL_LEVEL) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1270 ASSERT(zilog != NULL);
8746
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1271 /*
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1272 * 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
1273 * accounting, so just free it.
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1274 */
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1275 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
1276 } else {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1277 ASSERT(zilog == NULL);
8746
e1d96ca6808c 6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 8525
diff changeset
1278 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
1279 (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
1280 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1281
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1282 return (0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1283 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1284
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1285 /* ARGSUSED */
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1286 static int
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1287 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
1288 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1289 dsl_dataset_t *ds = arg1;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1290 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1291 uint64_t count;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1292 int err;
1731
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 /*
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1295 * 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
1296 * (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
1297 * from.)
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1298 */
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1299 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
1300 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
1301 return (EBUSY);
1731
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1302
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1303 /*
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1304 * 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
1305 * we'll be less likely to leave this dataset inconsistent &
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1306 * nearly destroyed.
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1307 */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1308 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
1309 if (err)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1310 return (err);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1311 if (count != 0)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1312 return (EEXIST);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1313
1731
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1314 return (0);
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1315 }
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents: 1544
diff changeset
1316
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1317 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1318 static void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1319 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
1320 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1321 dsl_dataset_t *ds = arg1;
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1322 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1323
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1324 /* Mark it as inconsistent on-disk, in case we crash */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1325 dmu_buf_will_dirty(ds->ds_dbuf, tx);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1326 ds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT;
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1327
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1328 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1329 cr, "dataset = %llu", ds->ds_object);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1330 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1331
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1332 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1333 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
1334 dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1335 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1336 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1337 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
1338
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1339 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
1340 struct dsl_ds_destroyarg ndsda = {0};
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 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1343 * 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
1344 * the clone either.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1345 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1346 if (dsda->rm_origin == NULL) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1347 dsda->need_prep = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1348 return (EBUSY);
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
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1351 ndsda.ds = ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1352 ndsda.is_origin_rm = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1353 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
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 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1357 * 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
1358 * undo the open context setup.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1359 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1360 if (dsda->rm_origin != NULL) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1361 dsl_dataset_disown(dsda->rm_origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1362 dsda->rm_origin = NULL;
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
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1365 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1366 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1367
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1368 /* ARGSUSED */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1369 int
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1370 dsl_dataset_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1371 {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1372 struct dsl_ds_destroyarg *dsda = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1373 dsl_dataset_t *ds = dsda->ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1374
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1375 /* 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
1376 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1377
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1378 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1379 * 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
1380 * 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
1381 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1382 if (dsda->defer) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1383 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
1384 SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1385 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1386 ASSERT(dsl_dataset_is_snapshot(ds));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1387 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1388 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1389
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1390 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1391 * Can't delete a head dataset if there are snapshots of it.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1392 * (Except if the only snapshots are from the branch we cloned
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1393 * from.)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1394 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1395 if (ds->ds_prev != NULL &&
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1396 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
1397 return (EBUSY);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1398
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1399 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1400 * If we made changes this txg, traverse_dsl_dataset won't find
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1401 * them. Try again.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1402 */
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1403 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1404 return (EAGAIN);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1405
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1406 if (dsl_dataset_is_snapshot(ds)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1407 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1408 * 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
1409 * we can't destroy it yet.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1410 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1411 if (ds->ds_userrefs > 0 && !dsda->releasing)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1412 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1413
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1414 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1415 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1416 * 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
1417 * 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
1418 * 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
1419 * 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
1420 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1421 if (ds->ds_phys->ds_num_children >
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1422 (dsda->is_origin_rm ? 2 : 1)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1423 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1424 return (EEXIST);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1425 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1426 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1427 } 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
1428 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
1429 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1430
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1431 /* XXX we should do some i/o error checking... */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1432 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1433 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1434
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1435 struct refsarg {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1436 kmutex_t lock;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1437 boolean_t gone;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1438 kcondvar_t cv;
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
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1441 /* ARGSUSED */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1442 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1443 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
1444 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1445 struct refsarg *arg = argv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1446
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1447 mutex_enter(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1448 arg->gone = TRUE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1449 cv_signal(&arg->cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1450 mutex_exit(&arg->lock);
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
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1453 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1454 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
1455 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1456 struct refsarg arg;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1457
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1458 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
1459 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
1460 arg.gone = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1461 (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
1462 dsl_dataset_refs_gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1463 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
1464 mutex_enter(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1465 while (!arg.gone)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1466 cv_wait(&arg.cv, &arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1467 ASSERT(arg.gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1468 mutex_exit(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1469 ds->ds_dbuf = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1470 ds->ds_phys = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1471 mutex_destroy(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1472 cv_destroy(&arg.cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1473 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1474
10801
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1475 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
1476 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
1477 {
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1478 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
1479 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
1480 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
1481
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1482 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
1483 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
1484 /*
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1485 * 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
1486 * 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
1487 * 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
1488 * 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
1489 * 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
1490 * 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
1491 * 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
1492 * 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
1493 */
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1494 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
1495 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
1496 }
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1497 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
1498 &count));
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1499 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
1500 }
e0bf032e8673 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10799
diff changeset
1501
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1502 void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1503 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
1504 {
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1505 struct dsl_ds_destroyarg *dsda = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1506 dsl_dataset_t *ds = dsda->ds;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1507 int err;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1508 int after_branch_point = FALSE;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1509 dsl_pool_t *dp = ds->ds_dir->dd_pool;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1510 objset_t *mos = dp->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1511 dsl_dataset_t *ds_prev = NULL;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1512 uint64_t obj;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1513
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1514 ASSERT(ds->ds_owner);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1515 ASSERT(dsda->defer || ds->ds_phys->ds_num_children <= 1);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1516 ASSERT(ds->ds_prev == NULL ||
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1517 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1518 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1519
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1520 if (dsda->defer) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1521 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
1522 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
1523 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
1524 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
1525 return;
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 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1528
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1529 /* 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
1530 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1531 ds->ds_owner = dsl_reaper;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1532 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1533 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1534
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1535 /* Remove our reservation */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1536 if (ds->ds_reserved != 0) {
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1537 dsl_prop_setarg_t psa;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1538 uint64_t value = 0;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1539
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1540 dsl_prop_setarg_init_uint64(&psa, "refreservation",
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1541 (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
1542 &value);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1543 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
1544
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
1545 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
1546 ASSERT3U(ds->ds_reserved, ==, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1547 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1548
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1549 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1550
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1551 dsl_pool_ds_destroyed(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1552
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1553 obj = ds->ds_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1554
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1555 if (ds->ds_phys->ds_prev_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1556 if (ds->ds_prev) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1557 ds_prev = ds->ds_prev;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1558 } else {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1559 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
1560 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1561 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1562 after_branch_point =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1563 (ds_prev->ds_phys->ds_next_snap_obj != obj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1564
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1565 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1566 if (after_branch_point &&
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1567 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
1568 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
1569 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
1570 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1571 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
1572 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
1573 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1574 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1575 if (after_branch_point &&
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1576 ds->ds_phys->ds_next_snap_obj == 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1577 /* This clone is toast. */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1578 ASSERT(ds_prev->ds_phys->ds_num_children > 1);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1579 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
1580
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1581 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1582 * 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
1583 * 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
1584 * 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
1585 * destroy setup for it.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1586 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1587 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
1588 ds_prev->ds_userrefs == 0 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1589 DS_IS_DEFER_DESTROY(ds_prev)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1590 ASSERT3P(dsda->rm_origin, !=, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1591 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1592 ASSERT3P(dsda->rm_origin, ==, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1593 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1594 } else if (!after_branch_point) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1595 ds_prev->ds_phys->ds_next_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1596 ds->ds_phys->ds_next_snap_obj;
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
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1600 if (ds->ds_phys->ds_next_snap_obj != 0) {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1601 blkptr_t bp;
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
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1621 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1622 * Transfer to our deadlist (which will become next's
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1623 * new deadlist) any entries from next's current
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1624 * deadlist which were born before prev, and free the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1625 * other entries.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1626 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1627 * XXX we're doing this long task with the config lock held
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1628 */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1629 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1630 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1631 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1632 &bp, tx));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1633 if (ds_prev && !after_branch_point &&
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1634 bp.blk_birth >
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1635 ds_prev->ds_phys->ds_prev_snap_txg) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1636 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
1637 bp_get_dsize_sync(dp->dp_spa, &bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1638 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1639 } else {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1640 used += bp_get_dsize_sync(dp->dp_spa, &bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1641 compressed += BP_GET_PSIZE(&bp);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1642 uncompressed += BP_GET_UCSIZE(&bp);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
1643 dsl_free(dp, tx->tx_txg, &bp);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1644 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1645 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1646
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1647 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
1648
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1649 /* change snapused */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1650 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
1651 -used, -compressed, -uncompressed, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1652
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1653 /* free next's deadlist */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1654 bplist_close(&ds_next->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1655 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1656
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1657 /* 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
1658 bplist_close(&ds->ds_deadlist);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1659 ds_next->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1660 ds->ds_phys->ds_deadlist_obj;
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1661 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1662 ds_next->ds_phys->ds_deadlist_obj));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1663 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1664
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1665 if (ds_next->ds_phys->ds_next_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1666 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1667 * Update next's unique to include blocks which
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1668 * were previously shared by only this snapshot
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1669 * and it. Those blocks will be born after the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1670 * prev snap and before this snap, and will have
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1671 * died after the next snap and before the one
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1672 * after that (ie. be on the snap after next's
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1673 * deadlist).
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1674 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1675 * XXX we're doing this long task with the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1676 * config lock held
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1677 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1678 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
1679 uint64_t space;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1680
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1681 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
1682 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
1683 FTAG, &ds_after_next));
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1684
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1685 VERIFY(0 ==
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1686 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
1687 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
1688 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
1689 ds_next->ds_phys->ds_unique_bytes += space;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1690
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1691 dsl_dataset_rele(ds_after_next, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1692 ASSERT3P(ds_next->ds_prev, ==, NULL);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1693 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1694 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
1695 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
1696 ds_next->ds_prev = NULL;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1697 if (ds_prev) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1698 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
1699 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
1700 ds_next, &ds_next->ds_prev));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1701 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1702
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1703 dsl_dataset_recalc_head_uniq(ds_next);
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 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1706 * Reduce the amount of our unconsmed refreservation
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1707 * being charged to our parent by the amount of
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1708 * new unique data we have gained.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1709 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1710 if (old_unique < ds_next->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1711 int64_t mrsdelta;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1712 uint64_t new_unique =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1713 ds_next->ds_phys->ds_unique_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1714
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1715 ASSERT(old_unique <= new_unique);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1716 mrsdelta = MIN(new_unique - old_unique,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1717 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
1718 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
1719 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1720 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1721 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1722 dsl_dataset_rele(ds_next, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1723 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1724 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1725 * There's no next snapshot, so this is a head dataset.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1726 * Destroy the deadlist. Unless it's a clone, the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1727 * deadlist should be empty. (If it's a clone, it's
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1728 * safe to ignore the deadlist contents.)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1729 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1730 struct killarg ka;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1731
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1732 ASSERT(after_branch_point || bplist_empty(&ds->ds_deadlist));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1733 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1734 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1735 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1736
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1737 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1738 * Free everything that we point to (that's born after
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1739 * the previous snapshot, if we are a clone)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1740 *
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1741 * 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
1742 * freed all the objects in open context.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1743 */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1744 ka.ds = ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1745 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
1746 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
1747 TRAVERSE_POST, kill_blkptr, &ka);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1748 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
1749 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
1750 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
1751
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1752 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
1753 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
1754 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
1755 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1756 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1757
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1758 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
1759 /* Erase the link in the dir */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1760 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
1761 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
1762 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1763 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1764 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1765 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1766 /* remove from snapshot namespace */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1767 dsl_dataset_t *ds_head;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1768 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
1769 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
1770 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
1771 VERIFY(0 == dsl_dataset_get_snapname(ds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1772 #ifdef ZFS_DEBUG
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1773 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1774 uint64_t val;
6492
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data
timh
parents: 6047
diff changeset
1775
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1776 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
1777 ds->ds_snapname, &val);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1778 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1779 ASSERT3U(val, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1780 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1781 #endif
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1782 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1783 ASSERT(err == 0);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1784 dsl_dataset_rele(ds_head, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1785 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1786
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1787 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
1788 dsl_dataset_rele(ds_prev, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1789
5094
71a3e95fb9e2 PSARC 2007/342 Enhanced ZFS Pool Properties
lling
parents: 4967
diff changeset
1790 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx);
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1791 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1792 cr, "dataset = %llu", ds->ds_object);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1793
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1794 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
1795 uint64_t count;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1796 ASSERT(0 == zap_count(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1797 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
1798 VERIFY(0 == dmu_object_free(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, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1800 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
1801 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
1802 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
1803 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
1804 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
1805 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
1806 ds->ds_dir = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1807 dsl_dataset_drain_refs(ds, tag);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1808 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
1809
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1810 if (dsda->rm_origin) {
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 * 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
1813 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1814 struct dsl_ds_destroyarg ndsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1815
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
1816 ndsda.ds = dsda->rm_origin;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
1817 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
1818 }
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1819 }
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1820
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1821 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1822 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
1823 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1824 uint64_t asize;
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 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1827 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1828
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1829 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1830 * 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
1831 * 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
1832 * outside of the reservation.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1833 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1834 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1835 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
1836 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1837
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1838 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1839 * Propogate any reserved space for this snapshot to other
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1840 * snapshot checks in this sync group.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1841 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1842 if (asize > 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1843 dsl_dir_willuse_space(ds->ds_dir, asize, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1844
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1845 return (0);
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
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1848 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1849 int
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1850 dsl_dataset_snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1851 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1852 dsl_dataset_t *ds = arg1;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1853 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1854 int err;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1855 uint64_t value;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1856
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1857 /*
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1858 * We don't allow multiple snapshots of the same txg. If there
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1859 * is already one, try again.
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1860 */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1861 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1862 return (EAGAIN);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1863
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1864 /*
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1865 * Check for conflicting name snapshot name.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1866 */
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1867 err = dsl_dataset_snap_lookup(ds, snapname, &value);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1868 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1869 return (EEXIST);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1870 if (err != ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1871 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1872
3978
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1873 /*
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1874 * 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
1875 * 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
1876 */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1877 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1878 return (ENAMETOOLONG);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents: 3912
diff changeset
1879
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1880 err = dsl_dataset_snapshot_reserve_space(ds, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1881 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1882 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1883
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1884 ds->ds_trysnap_txg = tx->tx_txg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1885 return (0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1886 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1887
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1888 void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1889 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
1890 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
1891 dsl_dataset_t *ds = arg1;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1892 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1893 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1894 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1895 dsl_dataset_phys_t *dsphys;
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1896 uint64_t dsobj, crtxg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1897 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1898 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1899
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1900 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1901
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1902 /*
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1903 * 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
1904 */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1905 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
1906 crtxg = 1;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1907 else
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1908 crtxg = tx->tx_txg;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1909
928
36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents: 885
diff changeset
1910 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
1911 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1912 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1913 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1914 dsphys = dbuf->db_data;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1915 bzero(dsphys, sizeof (dsl_dataset_phys_t));
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1916 dsphys->ds_dir_obj = ds->ds_dir->dd_object;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1917 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1918 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1919 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1920 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1921 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1922 dsphys->ds_next_snap_obj = ds->ds_object;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1923 dsphys->ds_num_children = 1;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1924 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
1925 dsphys->ds_creation_txg = crtxg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1926 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1927 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1928 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1929 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
1930 dsphys->ds_flags = ds->ds_phys->ds_flags;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1931 dsphys->ds_bp = ds->ds_phys->ds_bp;
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1932 dmu_buf_rele(dbuf, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1933
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1934 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1935 if (ds->ds_prev) {
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1936 uint64_t next_clones_obj =
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1937 ds->ds_prev->ds_phys->ds_next_clones_obj;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1938 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj ==
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1939 ds->ds_object ||
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1940 ds->ds_prev->ds_phys->ds_num_children > 1);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1941 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1942 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1943 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1944 ds->ds_prev->ds_phys->ds_creation_txg);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
1945 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
1946 } 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
1947 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
1948 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
1949 VERIFY3U(0, ==, zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1950 next_clones_obj, dsobj, tx));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1951 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1952 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1953
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1954 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1955 * 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
1956 * need to increase the amount of refreservation being charged
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1957 * since our unique space is going to zero.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1958 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1959 if (ds->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1960 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
1961 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
1962 add, 0, 0, tx);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1963 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1964
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1965 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1966 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
1967 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1968 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
1969 ds->ds_phys->ds_prev_snap_txg = crtxg;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1970 ds->ds_phys->ds_unique_bytes = 0;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
1971 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
1972 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1973 ds->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1974 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1975 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
1976 ds->ds_phys->ds_deadlist_obj));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1977
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1978 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1979 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1980 snapname, 8, 1, &dsobj, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1981 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1982
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1983 if (ds->ds_prev)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
1984 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
1985 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
1986 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev));
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1987
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1988 dsl_pool_ds_snapshotted(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
1989
10373
bcf97ee54990 6395956 snapshot dir needs real c/mtime
Chris Kirby <chris.kirby@sun.com>
parents: 10342
diff changeset
1990 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
1991
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
1992 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
1993 "dataset = %llu", dsobj);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1994 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1995
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1996 void
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1997 dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1998 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1999 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
2000 ASSERT(ds->ds_objset != NULL);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2001 ASSERT(ds->ds_phys->ds_next_snap_obj == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2002
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2003 /*
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2004 * in case we had to change ds_fsid_guid when we opened it,
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2005 * sync it out now.
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2006 */
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2007 dmu_buf_will_dirty(ds->ds_dbuf, tx);
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2008 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid;
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2009
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2010 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
2011 dmu_objset_sync(ds->ds_objset, zio, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2012 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2013
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2014 void
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2015 dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2016 {
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2017 uint64_t refd, avail, uobjs, aobjs;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2018
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2019 dsl_dir_stats(ds->ds_dir, nv);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2020
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2021 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2022 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
2023 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
2024
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2025 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2026 ds->ds_phys->ds_creation_time);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2027 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2028 ds->ds_phys->ds_creation_txg);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2029 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2030 ds->ds_quota);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2031 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2032 ds->ds_reserved);
6643
3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user
eschrock
parents: 6502
diff changeset
2033 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
2034 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
2035 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
2036 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
2037 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
2038 ds->ds_object);
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
2039 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
2040 ds->ds_userrefs);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
2041 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
2042 DS_IS_DEFER_DESTROY(ds) ? 1 : 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2043
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2044 if (ds->ds_phys->ds_next_snap_obj) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2045 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2046 * 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
2047 * our unique space and compression ratio.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2048 */
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2049 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2050 ds->ds_phys->ds_unique_bytes);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2051 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2052 ds->ds_phys->ds_compressed_bytes == 0 ? 100 :
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2053 (ds->ds_phys->ds_uncompressed_bytes * 100 /
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2054 ds->ds_phys->ds_compressed_bytes));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2055 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2056 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2057
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2058 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2059 dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2060 {
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2061 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2062 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2063 stat->dds_guid = ds->ds_phys->ds_guid;
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2064 if (ds->ds_phys->ds_next_snap_obj) {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2065 stat->dds_is_snapshot = B_TRUE;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2066 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
2067 } else {
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2068 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
2069 stat->dds_num_clones = 0;
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2070 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2071
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2072 /* clone origin is really a dsl_dir thing... */
5446
51fbc14b301d 6421210 zfs rollback without unmounting
ahrens
parents: 5383
diff changeset
2073 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
2074 if (dsl_dir_is_clone(ds->ds_dir)) {
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2075 dsl_dataset_t *ods;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2076
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2077 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
2078 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods));
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2079 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
2080 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
2081 } else {
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 7837
diff changeset
2082 stat->dds_origin[0] = '\0';
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2083 }
5446
51fbc14b301d 6421210 zfs rollback without unmounting
ahrens
parents: 5383
diff changeset
2084 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2085 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2086
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2087 uint64_t
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2088 dsl_dataset_fsid_guid(dsl_dataset_t *ds)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2089 {
4787
602d3f97842c 6393351 unique_* could be improved
ahrens
parents: 4603
diff changeset
2090 return (ds->ds_fsid_guid);
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2091 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2092
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2093 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2094 dsl_dataset_space(dsl_dataset_t *ds,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2095 uint64_t *refdbytesp, uint64_t *availbytesp,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2096 uint64_t *usedobjsp, uint64_t *availobjsp)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2097 {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2098 *refdbytesp = ds->ds_phys->ds_used_bytes;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2099 *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
2100 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
2101 *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
2102 if (ds->ds_quota != 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2103 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2104 * Adjust available bytes according to refquota
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 if (*refdbytesp < ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2107 *availbytesp = MIN(*availbytesp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2108 ds->ds_quota - *refdbytesp);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2109 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2110 *availbytesp = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
2111 }
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2112 *usedobjsp = ds->ds_phys->ds_bp.blk_fill;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2856
diff changeset
2113 *availobjsp = DN_MAX_OBJECT - *usedobjsp;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2114 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2115
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2116 boolean_t
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2117 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
2118 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2119 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
2120
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2121 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) ||
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2122 dsl_pool_sync_context(dp));
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2123 if (ds->ds_prev == NULL)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2124 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2125 if (ds->ds_phys->ds_bp.blk_birth >
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2126 ds->ds_prev->ds_phys->ds_creation_txg)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2127 return (B_TRUE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2128 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2129 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2130
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2131 /* ARGSUSED */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2132 static int
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2133 dsl_dataset_snapshot_rename_check(void *arg1, void *arg2, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2134 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2135 dsl_dataset_t *ds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2136 char *newsnapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2137 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2138 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2139 uint64_t val;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2140 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2141
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2142 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
2143 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2144 if (err)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2145 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2146
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2147 /* 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
2148 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
2149 dsl_dataset_rele(hds, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2150
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2151 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2152 err = EEXIST;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2153 else if (err == ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2154 err = 0;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2155
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2156 /* dataset name + 1 for the "@" + the new snapshot name must fit */
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2157 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN)
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2158 err = ENAMETOOLONG;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2159
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2160 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2161 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2162
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2163 static void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2164 dsl_dataset_snapshot_rename_sync(void *arg1, void *arg2,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2165 cred_t *cr, dmu_tx_t *tx)
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2166 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2167 dsl_dataset_t *ds = arg1;
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2168 const char *newsnapname = arg2;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2169 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2170 objset_t *mos = dd->dd_pool->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2171 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2172 int err;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2173
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2174 ASSERT(ds->ds_phys->ds_next_snap_obj != 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2175
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2176 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
2177 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2178
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2179 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
2180 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2181 ASSERT3U(err, ==, 0);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2182 mutex_enter(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2183 (void) strcpy(ds->ds_snapname, newsnapname);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2184 mutex_exit(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2185 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj,
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2186 ds->ds_snapname, 8, 1, &ds->ds_object, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2187 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2188
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2189 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
2190 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
2191 dsl_dataset_rele(hds, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2192 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2193
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2194 struct renamesnaparg {
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2195 dsl_sync_task_group_t *dstg;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2196 char failed[MAXPATHLEN];
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2197 char *oldsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2198 char *newsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2199 };
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2200
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2201 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2202 dsl_snapshot_rename_one(const char *name, void *arg)
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2203 {
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2204 struct renamesnaparg *ra = arg;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2205 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
2206 char *snapname;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2207 int err;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2208
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2209 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
2210 (void) strlcpy(ra->failed, snapname, sizeof (ra->failed));
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2211
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2212 /*
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2213 * For recursive snapshot renames the parent won't be changing
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2214 * so we just pass name for both the to/from argument.
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2215 */
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2216 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
2217 if (err != 0) {
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2218 strfree(snapname);
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2219 return (err == ENOENT ? 0 : err);
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2220 }
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2221
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2222 #ifdef _KERNEL
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2223 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2224 * 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
2225 */
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2226 (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
2227 #endif
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2228 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
2229 strfree(snapname);
3b5da7ebb54d 6920880 assertion failure in dbuf_write_ready()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11546
diff changeset
2230 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
2231 return (err == ENOENT ? 0 : err);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2232
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2233 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2234 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2235
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2236 return (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
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2239 static int
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2240 dsl_recursive_rename(char *oldname, const char *newname)
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2241 {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2242 int err;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2243 struct renamesnaparg *ra;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2244 dsl_sync_task_t *dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2245 spa_t *spa;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2246 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
2247 int len = strlen(oldname) + 1;
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2248
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2249 /* truncate the snapshot name to get the fsname */
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2250 cp = strchr(fsname, '@');
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2251 *cp = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2252
4603
c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents: 4577
diff changeset
2253 err = spa_open(fsname, &spa, FTAG);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2254 if (err) {
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2255 kmem_free(fsname, len);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2256 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2257 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2258 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2259 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2260
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2261 ra->oldsnap = strchr(oldname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2262 ra->newsnap = strchr(newname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2263 *ra->failed = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2264
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2265 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2266 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
2267 kmem_free(fsname, len);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2268
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2269 if (err == 0) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2270 err = dsl_sync_task_group_wait(ra->dstg);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2271 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2272
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2273 for (dst = list_head(&ra->dstg->dstg_tasks); dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2274 dst = list_next(&ra->dstg->dstg_tasks, dst)) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2275 dsl_dataset_t *ds = dst->dst_arg1;
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2276 if (dst->dst_err) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2277 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
2278 (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
2279 (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
2280 sizeof (ra->failed));
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2281 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2282 dsl_dataset_rele(ds, ra->dstg);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2283 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2284
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2285 if (err)
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2286 (void) strlcpy(oldname, ra->failed, sizeof (ra->failed));
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2287
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2288 dsl_sync_task_group_destroy(ra->dstg);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2289 kmem_free(ra, sizeof (struct renamesnaparg));
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2290 spa_close(spa, FTAG);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2291 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2292 }
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2293
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
2294 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
2295 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
2296 {
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2297 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
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 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
2300 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
2301
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 (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
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
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2305 #pragma weak dmu_objset_rename = dsl_dataset_rename
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2306 int
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2307 dsl_dataset_rename(char *oldname, const char *newname, boolean_t recursive)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2308 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2309 dsl_dir_t *dd;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2310 dsl_dataset_t *ds;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2311 const char *tail;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2312 int err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2313
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2314 err = dsl_dir_open(oldname, FTAG, &dd, &tail);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
2315 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 928
diff changeset
2316 return (err);
8517
41a0783dde17 6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 8228
diff changeset
2317 /*
41a0783dde17 6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 8228
diff changeset
2318 * If there are more than 2 references there may be holds
41a0783dde17 6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 8228
diff changeset
2319 * hanging around that haven't been cleared out yet.
41a0783dde17 6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 8228
diff changeset
2320 */
41a0783dde17 6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 8228
diff changeset
2321 if (dmu_buf_refcount(dd->dd_dbuf) > 2)
41a0783dde17 6784757 zfs rename occasionally fails with ebusy
Eric Taylor <Eric.Taylor@Sun.COM>
parents: 8228
diff changeset
2322 txg_wait_synced(dd->dd_pool, 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2323 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
2324 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
2325
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2326 /* 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
2327 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
2328 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
2329 &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
2330
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2331 if (!err)
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents: 4543
diff changeset
2332 err = dsl_dir_rename(dd, newname);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2333 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2334 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2335 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2336 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
2337 /* the name ended in a nonexistent component */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2338 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2339 return (ENOENT);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2340 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2341
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2342 dsl_dir_close(dd, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2343
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2344 /* new name must be snapshot in same filesystem */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2345 tail = strchr(newname, '@');
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2346 if (tail == NULL)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2347 return (EINVAL);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2348 tail++;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2349 if (strncmp(oldname, newname, tail - newname) != 0)
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2350 return (EXDEV);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2351
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2352 if (recursive) {
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2353 err = dsl_recursive_rename(oldname, newname);
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2354 } else {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2355 err = dsl_dataset_hold(oldname, FTAG, &ds);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2356 if (err)
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2357 return (err);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2358
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2359 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2360 dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2361 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2362
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2363 dsl_dataset_rele(ds, FTAG);
4007
c6f5c6753018 PSARC 2007/142 zfs rename -r
mmusante
parents: 3978
diff changeset
2364 }
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2365
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2366 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
2367 }
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2368
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2369 struct promotenode {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2370 list_node_t link;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2371 dsl_dataset_t *ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2372 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2373
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2374 struct promotearg {
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2375 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
2376 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
2377 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
2378 char *err_ds;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2379 };
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2380
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2381 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
2382
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2383 /* ARGSUSED */
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2384 static int
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2385 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
2386 {
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2387 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2388 struct promotearg *pa = arg2;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2389 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
2390 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
2391 int err;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2392
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2393 /* 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
2394 if (!dsl_dir_is_clone(hds->ds_dir))
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2395 return (EINVAL);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2396
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2397 /* Since this is so expensive, don't do the preliminary check */
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2398 if (!dmu_tx_is_syncing(tx))
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2399 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2400
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2401 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
2402 return (EXDEV);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2403
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2404 /* 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
2405 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2406 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
2407 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
2408 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
2409 if (err)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2410 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2411
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2412 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2413 * 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
2414 *
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2415 * 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
2416 * to used for each snapshot:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2417 * (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
2418 * So each snapshot gave birth to:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2419 * (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
2420 * 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
2421 * (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
2422 * Which simplifies to:
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2423 * 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
2424 * 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
2425 * 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
2426 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2427 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
2428 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
2429 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
2430 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
2431 snap = list_next(&pa->shared_snaps, snap)) {
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2432 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
2433 dsl_dataset_t *ds = snap->ds;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2434
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2435 /* 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
2436 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
2437 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
2438 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
2439 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
2440 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
2441 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2442 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
2443 goto out;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2444
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2445 /* 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
2446 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
2447 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2448
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2449 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
2450 &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
2451 goto out;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2452 pa->used += dlused;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2453 pa->comp += dlcomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2454 pa->uncomp += dluncomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2455 }
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2456
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2457 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2458 * 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
2459 * 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
2460 */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2461 if (pa->origin_origin) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2462 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
2463 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
2464 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2465 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2466
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2467 /* 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
2468 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
2469 pa->used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2470 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2471 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2472
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2473 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2474 * 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
2475 * 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
2476 * 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
2477 * 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
2478 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2479 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
2480 uint64_t space;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2481
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2482 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2483 * 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
2484 * 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
2485 * these snaplist_space() -> bplist_space_birthrange()
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2486 * 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
2487 * iterate over all bps.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2488 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2489 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2490 err = snaplist_space(&pa->shared_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2491 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
2492 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2493 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2494
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2495 err = snaplist_space(&pa->clone_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2496 snap->ds->ds_origin_txg, &space);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2497 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2498 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2499 pa->cloneusedsnap += space;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2500 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2501 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
2502 err = snaplist_space(&pa->origin_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2503 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
2504 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2505 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2506 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2507
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2508 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
2509 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
2510 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
2511 return (err);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2512 }
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2513
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2514 static void
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2515 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
2516 {
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2517 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2518 struct promotearg *pa = arg2;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2519 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
2520 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
2521 dsl_dataset_t *origin_head;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2522 dsl_dir_t *dd = hds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2523 dsl_pool_t *dp = hds->ds_dir->dd_pool;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2524 dsl_dir_t *odd = NULL;
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2525 uint64_t oldnext_obj;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2526 int64_t delta;
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2527
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2528 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE));
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2529
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2530 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2531 origin_head = snap->ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2532
2417
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
2533 /*
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2534 * 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
2535 * changing.
694d5de97348 6444346 zfs promote fails in zone
ahrens
parents: 2207
diff changeset
2536 */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2537 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
2538 NULL, FTAG, &odd));
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2539
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2540 /* change origin's next snap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2541 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
2542 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
2543 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2544 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
2545 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
2546
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2547 /* change the origin's next clone */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2548 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
2549 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
2550 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
2551 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
2552 oldnext_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2553 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2554
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2555 /* change origin */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2556 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
2557 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
2558 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
2559 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
2560 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
2561 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
2562 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
2563
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2564 /* move snapshots to this dir */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2565 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
2566 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
2567 dsl_dataset_t *ds = snap->ds;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2568
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
2569 /* 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
2570 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2571 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
2572 ds->ds_objset = NULL;
7237
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents: 7077
diff changeset
2573 }
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2574 /* move snap name entry */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2575 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
2576 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
2577 ds->ds_snapname, tx));
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2578 VERIFY(0 == zap_add(dp->dp_meta_objset,
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2579 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname,
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2580 8, 1, &ds->ds_object, tx));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2581 /* change containing dsl_dir */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2582 dmu_buf_will_dirty(ds->ds_dbuf, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2583 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2584 ds->ds_phys->ds_dir_obj = dd->dd_object;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2585 ASSERT3P(ds->ds_dir, ==, odd);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2586 dsl_dir_close(ds->ds_dir, ds);
2199
712a788c2dfd PSARC 2006/388 snapshot -r
ahrens
parents: 2082
diff changeset
2587 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object,
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2588 NULL, ds, &ds->ds_dir));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2589
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2590 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
2591 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2592
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2593 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2594 * Change space accounting.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2595 * 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
2596 * 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
2597 * 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
2598 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2599
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2600 delta = pa->cloneusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2601 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
2602 ASSERT3S(delta, >=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2603 ASSERT3U(pa->used, >=, delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2604 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
2605 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
2606 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
2607
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2608 delta = pa->originusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2609 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
2610 ASSERT3S(delta, <=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2611 ASSERT3U(pa->used, >=, -delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2612 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
2613 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
2614 -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
2615
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2616 origin_ds->ds_phys->ds_unique_bytes = pa->unique;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2617
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2618 /* log history record */
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2619 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
2620 cr, "dataset = %llu", hds->ds_object);
4543
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration
marks
parents: 4009
diff changeset
2621
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2622 dsl_dir_close(odd, FTAG);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2623 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2624
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2625 static char *snaplist_tag = "snaplist";
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2626 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2627 * 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
2628 * (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
2629 * 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
2630 * 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
2631 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2632 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2633 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
2634 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
2635 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2636 uint64_t obj = last_obj;
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 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
2639
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2640 list_create(l, sizeof (struct promotenode),
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2641 offsetof(struct promotenode, link));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2642
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2643 while (obj != first_obj) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2644 dsl_dataset_t *ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2645 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2646 int err;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2647
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2648 if (own) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2649 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
2650 0, snaplist_tag, &ds);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2651 if (err == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2652 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
2653 } else {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2654 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
2655 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2656 if (err == ENOENT) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2657 /* lost race with snapshot destroy */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2658 struct promotenode *last = list_tail(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2659 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
2660 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
2661 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2662 } else if (err) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2663 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2664 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2665
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2666 if (first_obj == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2667 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
2668
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2669 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
2670 snap->ds = ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2671 list_insert_tail(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2672 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
2673 }
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 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2676 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2677
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2678 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2679 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
2680 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2681 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2682
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2683 *spacep = 0;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2684 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
2685 uint64_t used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2686 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
2687 mintxg, UINT64_MAX, &used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2688 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2689 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2690 *spacep += used;
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 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2693 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2694
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2695 static void
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2696 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
2697 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2698 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2699
8779
f164e0e90508 6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents: 8746
diff changeset
2700 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
2701 return;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2702
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2703 while ((snap = list_tail(l)) != NULL) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2704 list_remove(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2705 if (own)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2706 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
2707 else
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2708 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
2709 kmem_free(snap, sizeof (struct promotenode));
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 list_destroy(l);
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
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2714 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2715 * Promote a clone. Nomenclature note:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2716 * "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
2717 * "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
2718 * "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
2719 * (filesystem/volume) for the origin
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2720 * "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
2721 * 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
2722 */
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2723 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
2724 dsl_dataset_promote(const char *name, char *conflsnap)
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2725 {
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2726 dsl_dataset_t *ds;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2727 dsl_dir_t *dd;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2728 dsl_pool_t *dp;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2729 dmu_object_info_t doi;
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2730 struct promotearg pa = { 0 };
7046
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents: 6992
diff changeset
2731 struct promotenode *snap;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2732 int err;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2733
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2734 err = dsl_dataset_hold(name, FTAG, &ds);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2735 if (err)
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2736 return (err);
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2737 dd = ds->ds_dir;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2738 dp = dd->dd_pool;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2739
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2740 err = dmu_object_info(dp->dp_meta_objset,
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2741 ds->ds_phys->ds_snapnames_zapobj, &doi);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2742 if (err) {
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2743 dsl_dataset_rele(ds, FTAG);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2744 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2745 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2746
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2747 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
2748 dsl_dataset_rele(ds, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2749 return (EINVAL);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2750 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2751
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2752 /*
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2753 * 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
2754 * 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
2755 * 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
2756 * namespace.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2757 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2758 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
2759
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2760 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
2761 &pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2762 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2763 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2764
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2765 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
2766 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2767 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2768
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2769 snap = list_head(&pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2770 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
2771 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
2772 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
2773 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2774 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2775
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2776 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
2777 err = dsl_dataset_own_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2778 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
2779 0, FTAG, &pa.origin_origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2780 if (err != 0)
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2781 goto out;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2782 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2783
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2784 out:
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2785 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2786
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2787 /*
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2788 * Add in 128x the snapnames zapobj size, since we will be moving
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2789 * a bunch of snapnames to the promoted ds, and dirtying their
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2790 * bonus buffers.
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2791 */
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2792 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2793 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
2794 dsl_dataset_promote_sync, ds, &pa,
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10816
diff changeset
2795 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
2796 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
2797 (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
2798 }
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2799
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2800 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
2801 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
2802 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
2803 if (pa.origin_origin)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2804 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
2805 dsl_dataset_rele(ds, FTAG);
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2806 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1758
diff changeset
2807 }
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
2808
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2809 struct cloneswaparg {
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2810 dsl_dataset_t *cds; /* clone dataset */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2811 dsl_dataset_t *ohds; /* origin's head dataset */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2812 boolean_t force;
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2813 int64_t unused_refres_delta; /* change in unconsumed refreservation */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2814 };
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2815
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2816 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2817 static int
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2818 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
2819 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2820 struct cloneswaparg *csa = arg1;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2821
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2822 /* they should both be heads */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2823 if (dsl_dataset_is_snapshot(csa->cds) ||
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2824 dsl_dataset_is_snapshot(csa->ohds))
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2825 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2826
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2827 /* the branch point should be just before them */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2828 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
2829 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2830
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2831 /* 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
2832 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
2833 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
2834 csa->ohds->ds_object !=
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2835 csa->cds->ds_prev->ds_phys->ds_next_snap_obj)
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2836 return (EINVAL);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2837
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2838 /* the clone should be a child of the origin */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2839 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir)
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2840 return (EINVAL);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2841
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2842 /* ohds shouldn't be modified unless 'force' */
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2843 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds))
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2844 return (ETXTBSY);
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2845
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2846 /* adjust amount of any unconsumed refreservation */
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2847 csa->unused_refres_delta =
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->ohds->ds_phys->ds_unique_bytes) -
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2850 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2851 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2852
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2853 if (csa->unused_refres_delta > 0 &&
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2854 csa->unused_refres_delta >
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2855 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
2856 return (ENOSPC);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2857
10799
395576ddfea9 6881321 zfs test rsend_012_pos panics when running daily.0807 archives
Chris Kirby <Chris.Kirby@sun.com>
parents: 10588
diff changeset
2858 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
2859 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
2860 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
2861
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2862 return (0);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2863 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2864
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2865 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2866 static void
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2867 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
2868 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2869 struct cloneswaparg *csa = arg1;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2870 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
2871
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2872 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
2873 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
2874 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
2875
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2876 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2877 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
2878
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2879 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
2880 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
2881 csa->cds->ds_objset = NULL;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2882 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2883
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
2884 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
2885 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
2886 csa->ohds->ds_objset = NULL;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2887 }
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2888
10272
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 * 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
2891 */
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2892 if (csa->cds->ds_prev) {
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2893 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
2894 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
2895 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
2896 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
2897 &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
2898 }
5326
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 /* swap blkptrs */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2901 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2902 blkptr_t tmp;
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2903 tmp = csa->ohds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2904 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2905 csa->cds->ds_phys->ds_bp = tmp;
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2906 }
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 /* set dd_*_bytes */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2909 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2910 int64_t dused, dcomp, duncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2911 uint64_t cdl_used, cdl_comp, cdl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2912 uint64_t odl_used, odl_comp, odl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2913
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2914 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
2915 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
2916
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2917 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
2918 &cdl_comp, &cdl_uncomp));
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2919 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
2920 &odl_comp, &odl_uncomp));
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2921
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2922 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used -
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2923 (csa->ohds->ds_phys->ds_used_bytes + odl_used);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2924 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp -
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2925 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2926 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes +
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2927 cdl_uncomp -
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2928 (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
2929
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->ohds->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 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD,
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2933 -dused, -dcomp, -duncomp, tx);
7390
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2934
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2935 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2936 * 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
2937 * 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
2938 * 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
2939 * changing that affects the snapused).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2940 */
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->cds->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, &cdl_used));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7385
diff changeset
2943 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
2944 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
2945 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
2946 DD_USED_HEAD, DD_USED_SNAP, tx);
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2947 }
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 #define SWITCH64(x, y) \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2950 { \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2951 uint64_t __tmp = (x); \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2952 (x) = (y); \
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2953 (y) = __tmp; \
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2954 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2955
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2956 /* swap ds_*_bytes */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2957 SWITCH64(csa->ohds->ds_phys->ds_used_bytes,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2958 csa->cds->ds_phys->ds_used_bytes);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2959 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2960 csa->cds->ds_phys->ds_compressed_bytes);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2961 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2962 csa->cds->ds_phys->ds_uncompressed_bytes);
5481
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2963 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2964 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2965
1364fb7de75d 6619182 new non-sparse zvols should get refreservations
ck153898
parents: 5475
diff changeset
2966 /* 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
2967 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
2968 csa->unused_refres_delta, 0, 0, tx);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2969
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2970 /* swap deadlists */
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2971 bplist_close(&csa->cds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2972 bplist_close(&csa->ohds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2973 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj,
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->cds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2976 csa->cds->ds_phys->ds_deadlist_obj));
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2977 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2978 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
2979
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7754
diff changeset
2980 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
2981 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2982
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2983 /*
10272
a0669934e974 6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10268
diff changeset
2984 * 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
2985 * 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
2986 * 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
2987 * 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
2988 */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2989 int
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2990 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
2991 boolean_t force)
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
2992 {
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
2993 struct cloneswaparg csa;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2994 int error;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2995
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2996 ASSERT(clone->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2997 ASSERT(origin_head->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2998 retry:
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
2999 /* Need exclusive access for the swap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3000 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
3001 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
3002 rw_exit(&clone->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3003 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
3004 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
3005 rw_exit(&origin_head->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3006 goto retry;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3007 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3008 }
5367
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
3009 csa.cds = clone;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
3010 csa.ohds = origin_head;
c40abbe796be PSARC/2007/574 zfs send -R
ahrens
parents: 5326
diff changeset
3011 csa.force = force;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3012 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
3013 dsl_dataset_clone_swap_check,
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3014 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
3015 return (error);
5326
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
3016 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents: 5094
diff changeset
3017
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3018 /*
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3019 * Given a pool name and a dataset object number in that pool,
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3020 * return the name of that dataset.
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3021 */
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3022 int
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3023 dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3024 {
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3025 spa_t *spa;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3026 dsl_pool_t *dp;
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3027 dsl_dataset_t *ds;
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3028 int error;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3029
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3030 if ((error = spa_open(pname, &spa, FTAG)) != 0)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3031 return (error);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3032 dp = spa_get_dsl(spa);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3033 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
3034 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
3035 dsl_dataset_name(ds, buf);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3036 dsl_dataset_rele(ds, FTAG);
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3037 }
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3038 rw_exit(&dp->dp_config_rwlock);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3039 spa_close(spa, FTAG);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3040
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3041 return (error);
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3547
diff changeset
3042 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3043
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3044 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3045 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
3046 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
3047 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3048 int error = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3049
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3050 ASSERT3S(asize, >, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3051
5831
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3052 /*
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3053 * *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
3054 * unconsumed refreservation space.
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3055 */
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3056 *ref_rsrv = 0;
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3057
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3058 mutex_enter(&ds->ds_lock);
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 * Make a space adjustment for reserved bytes.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3061 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3062 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
3063 ASSERT3U(*used, >=,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3064 ds->ds_reserved - ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3065 *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
3066 *ref_rsrv =
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents: 5712
diff changeset
3067 asize - MIN(asize, parent_delta(ds, asize + inflight));
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3068 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3069
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3070 if (!check_quota || ds->ds_quota == 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3071 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3072 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3073 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3074 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3075 * 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
3076 * 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
3077 * 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
3078 * may free up space for us).
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3079 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3080 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
3081 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
3082 error = ERESTART;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3083 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3084 error = EDQUOT;
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 mutex_exit(&ds->ds_lock);
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 return (error);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3089 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3090
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3091 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3092 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3093 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
3094 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3095 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3096 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3097 int err;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3098
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3099 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
3100 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3101
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3102 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
3103 return (err);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3104
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3105 if (psa->psa_effective_value == 0)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3106 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3107
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3108 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
3109 psa->psa_effective_value < ds->ds_reserved)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3110 return (ENOSPC);
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 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3113 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3114
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3115 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
3116
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3117 void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3118 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
3119 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3120 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3121 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3122 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
3123
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3124 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
3125 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
3126
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3127 if (ds->ds_quota != effective_value) {
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3128 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
3129 ds->ds_quota = effective_value;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3130
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3131 spa_history_internal_log(LOG_DS_REFQUOTA,
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3132 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
3133 (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
3134 }
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3135 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3136
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3137 int
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3138 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
3139 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3140 dsl_dataset_t *ds;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3141 dsl_prop_setarg_t psa;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3142 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3143
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3144 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
3145
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3146 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3147 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3148 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3149
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3150 /*
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3151 * 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
3152 * 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
3153 */
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3154 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
3155
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3156 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
3157 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
3158 ds, &psa, 0);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3159
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3160 dsl_dataset_rele(ds, FTAG);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3161 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3162 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3163
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3164 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3165 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
3166 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3167 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3168 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3169 uint64_t effective_value;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3170 uint64_t unique;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3171 int err;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3172
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3173 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
3174 SPA_VERSION_REFRESERVATION)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3175 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3176
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3177 if (dsl_dataset_is_snapshot(ds))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3178 return (EINVAL);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3179
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3180 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
3181 return (err);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3182
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3183 effective_value = psa->psa_effective_value;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3184
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3185 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3186 * 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
3187 * space estimates may be inaccurate.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3188 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3189 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3190 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3191
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3192 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3193 unique = dsl_dataset_unique(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3194 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3195
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3196 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
3197 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
3198 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
3199
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3200 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
3201 return (ENOSPC);
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3202 if (ds->ds_quota > 0 &&
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3203 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
3204 return (ENOSPC);
e0e0e525d0f8 6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents: 8517
diff changeset
3205 }
5378
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 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3208 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3209
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3210 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3211 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3212 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
3213 dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3214 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3215 dsl_dataset_t *ds = arg1;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3216 dsl_prop_setarg_t *psa = arg2;
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3217 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
3218 uint64_t unique;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3219 int64_t delta;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3220
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3221 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
3222 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
3223
7595
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3224 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
3225
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3226 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
3227 mutex_enter(&ds->ds_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3228 unique = dsl_dataset_unique(ds);
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3229 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
3230 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
3231 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
3232 mutex_exit(&ds->ds_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3233
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3234 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
3235 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
3236
2ff5700c7efc 6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 7525
diff changeset
3237 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
3238 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
3239 (longlong_t)effective_value, ds->ds_object);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3240 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3241
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3242 int
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3243 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
3244 uint64_t reservation)
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3245 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3246 dsl_dataset_t *ds;
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3247 dsl_prop_setarg_t psa;
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3248 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3249
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3250 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
3251 &reservation);
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3252
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3253 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3254 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3255 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3256
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3257 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
3258 dsl_dataset_set_reservation_check,
11022
63ab26072e41 PSARC 2009/510 ZFS received properties
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 10951
diff changeset
3259 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
3260
6689
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents: 6643
diff changeset
3261 dsl_dataset_rele(ds, FTAG);
5378
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3262 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents: 5367
diff changeset
3263 }
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3264
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3265 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
3266 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
3267 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
3268 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
3269 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
3270 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
3271 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
3272 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
3273 };
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3274
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
3275 /*
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 * 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
3277 * 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
3278 */
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
3279 #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
3280
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3281 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3282 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
3283 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3284 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
3285 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
3286 char *htag = ha->htag;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3287 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
3288 int error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3289
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3290 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
3291 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3292
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3293 if (!dsl_dataset_is_snapshot(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3294 return (EINVAL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3295
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3296 /* tags must be unique */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3297 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3298 if (ds->ds_phys->ds_userrefs_obj) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3299 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
3300 8, 1, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3301 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3302 error = EEXIST;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3303 else if (error == ENOENT)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3304 error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3305 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3306 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3307
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
3308 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
3309 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
3310 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
3311
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3312 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3313 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3314
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3315 static void
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3316 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
3317 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3318 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
3319 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
3320 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
3321 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
3322 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
3323 uint64_t now = gethrestime_sec();
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3324 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3325
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3326 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3327 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
3328 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3329 * 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
3330 * the userrefs zap object.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3331 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3332 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
3333 zapobj = ds->ds_phys->ds_userrefs_obj =
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3334 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
3335 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3336 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3337 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3338 ds->ds_userrefs++;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3339 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3340
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3341 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
3342
10342
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3343 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
3344 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
3345 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
3346 }
108f0058f837 6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents: 10298
diff changeset
3347
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3348 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
3349 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
3350 (int)ha->temphold, ds->ds_object);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3351 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3352
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3353 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3354 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
3355 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3356 struct dsl_ds_holdarg *ha = arg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3357 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3358 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3359 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3360
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3361 /* 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
3362 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
3363 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
3364 strfree(name);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3365 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
3366 ha->gotone = B_TRUE;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3367 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
3368 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
3369 } else if (error == ENOENT && ha->recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3370 error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3371 } else {
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3372 (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
3373 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3374 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3375 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3376
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3377 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3378 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
3379 boolean_t recursive, boolean_t temphold)
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3380 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3381 struct dsl_ds_holdarg *ha;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3382 dsl_sync_task_t *dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3383 spa_t *spa;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3384 int error;
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 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
3387
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3388 (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
3389
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3390 error = spa_open(dsname, &spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3391 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3392 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
3393 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3394 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3395
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3396 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
3397 ha->htag = htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3398 ha->snapname = snapname;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3399 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
3400 ha->temphold = temphold;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3401 if (recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3402 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
3403 ha, DS_FIND_CHILDREN);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3404 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3405 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
3406 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3407 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3408 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
3409
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3410 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
3411 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
3412 dsl_dataset_t *ds = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3413
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3414 if (dst->dst_err) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3415 dsl_dataset_name(ds, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3416 *strchr(ha->failed, '@') = '\0';
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 dsl_dataset_rele(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3419 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3420
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
3421 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
3422 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
3423
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3424 if (error)
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3425 (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
3426
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3427 dsl_sync_task_group_destroy(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3428 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
3429 spa_close(spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3430 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3431 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3432
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3433 struct dsl_ds_releasearg {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3434 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3435 const char *htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3436 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
3437 };
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3438
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3439 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3440 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
3441 boolean_t *might_destroy)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3442 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3443 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
3444 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3445 uint64_t tmp;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3446 int error;
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 *might_destroy = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3449
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3450 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3451 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3452 if (zapobj == 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3453 /* The tag can't possibly exist */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3454 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3455 return (ESRCH);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3456 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3457
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3458 /* Make sure the tag exists */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3459 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
3460 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3461 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3462 if (error == ENOENT)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3463 error = ESRCH;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3464 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3465 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3466
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3467 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
3468 DS_IS_DEFER_DESTROY(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3469 *might_destroy = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3470
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3471 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3472 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3473 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3474
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3475 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3476 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
3477 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3478 struct dsl_ds_releasearg *ra = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3479 dsl_dataset_t *ds = ra->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3480 boolean_t might_destroy;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3481 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3482
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3483 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
3484 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3485
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3486 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
3487 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3488 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3489
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3490 if (might_destroy) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3491 struct dsl_ds_destroyarg dsda = {0};
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 (dmu_tx_is_syncing(tx)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3494 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3495 * 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
3496 * 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
3497 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3498 if (!ra->own)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3499 return (EBUSY);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3500 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10272
diff changeset
3501 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
3502 ds->ds_objset = NULL;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3503 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3504 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3505 dsda.ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3506 dsda.releasing = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3507 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
3508 }
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 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3511 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3512
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3513 static void
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3514 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
3515 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3516 struct dsl_ds_releasearg *ra = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3517 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
3518 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
3519 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
3520 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3521 uint64_t dsobj = ds->ds_object;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3522 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
3523 int error;
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3524
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3525 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3526 ds->ds_userrefs--;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3527 refs = ds->ds_userrefs;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3528 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
3529 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
3530 VERIFY(error == 0 || error == ENOENT);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3531 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3532 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
3533 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
3534 DS_IS_DEFER_DESTROY(ds)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3535 struct dsl_ds_destroyarg dsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3536
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3537 ASSERT(ra->own);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3538 dsda.ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3539 dsda.releasing = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3540 /* We already did the destroy_check */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3541 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
3542 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3543
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3544 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
3545 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
3546 ra->htag, (longlong_t)refs, dsobj);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3547 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3548
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3549 static int
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3550 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
3551 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3552 struct dsl_ds_holdarg *ha = arg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3553 struct dsl_ds_releasearg *ra;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3554 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3555 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3556 void *dtag = ha->dstg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3557 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3558 boolean_t own = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3559 boolean_t might_destroy;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3560
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3561 /* 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
3562 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
3563 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
3564 strfree(name);
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3565 if (error == ENOENT && ha->recursive)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3566 return (0);
11209
462283cb4096 6905188 panic: kernel heap corruption when doing "zfs rename -r"
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 11022
diff changeset
3567 (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
3568 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3569 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3570
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
3571 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
3572
10242
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3573 ASSERT(dsl_dataset_is_snapshot(ds));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3574
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3575 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
3576 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3577 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3578 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3579 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3580
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3581 if (might_destroy) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3582 #ifdef _KERNEL
c40d075fbca6 PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents: 10204
diff changeset
3583 error = zfs_unmount_snap(name, NULL);
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 }