Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 10373:bcf97ee54990
6395956 snapshot dir needs real c/mtime
| author | Chris Kirby <chris.kirby@sun.com> |
|---|---|
| date | Mon, 24 Aug 2009 16:11:19 -0600 |
| parents | 108f0058f837 |
| children | 21cb6e67d108 |
| rev | line source |
|---|---|
| 789 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
| 1544 | 5 * Common Development and Distribution License (the "License"). |
| 6 * You may not use this file except in compliance with the License. | |
| 789 | 7 * |
| 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 * or http://www.opensolaris.org/os/licensing. | |
| 10 * See the License for the specific language governing permissions | |
| 11 * and limitations under the License. | |
| 12 * | |
| 13 * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 * If applicable, add the following below this CDDL HEADER, with the | |
| 16 * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 * | |
| 19 * CDDL HEADER END | |
| 20 */ | |
| 21 /* | |
|
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22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. |
| 789 | 23 * Use is subject to license terms. |
| 24 */ | |
| 25 | |
| 26 #include <sys/dmu_objset.h> | |
| 27 #include <sys/dsl_dataset.h> | |
| 28 #include <sys/dsl_dir.h> | |
| 2082 | 29 #include <sys/dsl_prop.h> |
| 2199 | 30 #include <sys/dsl_synctask.h> |
| 789 | 31 #include <sys/dmu_traverse.h> |
| 32 #include <sys/dmu_tx.h> | |
| 33 #include <sys/arc.h> | |
| 34 #include <sys/zio.h> | |
| 35 #include <sys/zap.h> | |
| 36 #include <sys/unique.h> | |
| 37 #include <sys/zfs_context.h> | |
| 4007 | 38 #include <sys/zfs_ioctl.h> |
| 4543 | 39 #include <sys/spa.h> |
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40 #include <sys/zfs_znode.h> |
| 4543 | 41 #include <sys/sunddi.h> |
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42 #include <sys/zvol.h> |
| 789 | 43 |
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44 static char *dsl_reaper = "the grim reaper"; |
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45 |
| 2199 | 46 static dsl_checkfunc_t dsl_dataset_destroy_begin_check; |
| 47 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync; | |
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48 static dsl_syncfunc_t dsl_dataset_set_reservation_sync; |
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49 |
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50 #define DS_REF_MAX (1ULL << 62) |
| 789 | 51 |
| 52 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE | |
| 53 | |
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54 #define DSL_DATASET_IS_DESTROYED(ds) ((ds)->ds_owner == dsl_reaper) |
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55 |
| 789 | 56 |
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57 /* |
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58 * Figure out how much of this delta should be propogated to the dsl_dir |
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59 * layer. If there's a refreservation, that space has already been |
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60 * partially accounted for in our ancestors. |
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61 */ |
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62 static int64_t |
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63 parent_delta(dsl_dataset_t *ds, int64_t delta) |
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64 { |
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65 uint64_t old_bytes, new_bytes; |
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66 |
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67 if (ds->ds_reserved == 0) |
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68 return (delta); |
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69 |
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70 old_bytes = MAX(ds->ds_phys->ds_unique_bytes, ds->ds_reserved); |
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71 new_bytes = MAX(ds->ds_phys->ds_unique_bytes + delta, ds->ds_reserved); |
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72 |
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73 ASSERT3U(ABS((int64_t)(new_bytes - old_bytes)), <=, ABS(delta)); |
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74 return (new_bytes - old_bytes); |
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75 } |
| 789 | 76 |
| 77 void | |
| 78 dsl_dataset_block_born(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 79 { | |
| 2082 | 80 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp); |
| 789 | 81 int compressed = BP_GET_PSIZE(bp); |
| 82 int uncompressed = BP_GET_UCSIZE(bp); | |
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83 int64_t delta; |
| 789 | 84 |
| 85 dprintf_bp(bp, "born, ds=%p\n", ds); | |
| 86 | |
| 87 ASSERT(dmu_tx_is_syncing(tx)); | |
| 88 /* It could have been compressed away to nothing */ | |
| 89 if (BP_IS_HOLE(bp)) | |
| 90 return; | |
| 91 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE); | |
| 92 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES); | |
| 93 if (ds == NULL) { | |
| 94 /* | |
| 95 * Account for the meta-objset space in its placeholder | |
| 96 * dsl_dir. | |
| 97 */ | |
| 98 ASSERT3U(compressed, ==, uncompressed); /* it's all metadata */ | |
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99 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD, |
| 789 | 100 used, compressed, uncompressed, tx); |
| 101 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx); | |
| 102 return; | |
| 103 } | |
| 104 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
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105 mutex_enter(&ds->ds_dir->dd_lock); |
| 789 | 106 mutex_enter(&ds->ds_lock); |
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107 delta = parent_delta(ds, used); |
| 789 | 108 ds->ds_phys->ds_used_bytes += used; |
| 109 ds->ds_phys->ds_compressed_bytes += compressed; | |
| 110 ds->ds_phys->ds_uncompressed_bytes += uncompressed; | |
| 111 ds->ds_phys->ds_unique_bytes += used; | |
| 112 mutex_exit(&ds->ds_lock); | |
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113 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, delta, |
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114 compressed, uncompressed, tx); |
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115 dsl_dir_transfer_space(ds->ds_dir, used - delta, |
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116 DD_USED_REFRSRV, DD_USED_HEAD, tx); |
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117 mutex_exit(&ds->ds_dir->dd_lock); |
| 789 | 118 } |
| 119 | |
| 6992 | 120 int |
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121 dsl_dataset_block_kill(dsl_dataset_t *ds, blkptr_t *bp, zio_t *pio, |
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122 dmu_tx_t *tx) |
| 789 | 123 { |
| 2082 | 124 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp); |
| 789 | 125 int compressed = BP_GET_PSIZE(bp); |
| 126 int uncompressed = BP_GET_UCSIZE(bp); | |
| 127 | |
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128 ASSERT(pio != NULL); |
| 789 | 129 ASSERT(dmu_tx_is_syncing(tx)); |
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130 /* No block pointer => nothing to free */ |
| 789 | 131 if (BP_IS_HOLE(bp)) |
| 6992 | 132 return (0); |
| 789 | 133 |
| 134 ASSERT(used > 0); | |
| 135 if (ds == NULL) { | |
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136 int err; |
| 789 | 137 /* |
| 138 * Account for the meta-objset space in its placeholder | |
| 139 * dataset. | |
| 140 */ | |
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141 err = dsl_free(pio, tx->tx_pool, |
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142 tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT); |
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143 ASSERT(err == 0); |
| 789 | 144 |
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145 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD, |
| 789 | 146 -used, -compressed, -uncompressed, tx); |
| 147 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx); | |
| 6992 | 148 return (used); |
| 789 | 149 } |
| 150 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool); | |
| 151 | |
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152 ASSERT(!dsl_dataset_is_snapshot(ds)); |
| 789 | 153 dmu_buf_will_dirty(ds->ds_dbuf, tx); |
| 154 | |
| 155 if (bp->blk_birth > ds->ds_phys->ds_prev_snap_txg) { | |
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156 int err; |
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157 int64_t delta; |
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158 |
| 789 | 159 dprintf_bp(bp, "freeing: %s", ""); |
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160 err = dsl_free(pio, tx->tx_pool, |
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161 tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT); |
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162 ASSERT(err == 0); |
| 789 | 163 |
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164 mutex_enter(&ds->ds_dir->dd_lock); |
| 789 | 165 mutex_enter(&ds->ds_lock); |
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166 ASSERT(ds->ds_phys->ds_unique_bytes >= used || |
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167 !DS_UNIQUE_IS_ACCURATE(ds)); |
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168 delta = parent_delta(ds, -used); |
| 789 | 169 ds->ds_phys->ds_unique_bytes -= used; |
| 170 mutex_exit(&ds->ds_lock); | |
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171 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, |
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172 delta, -compressed, -uncompressed, tx); |
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173 dsl_dir_transfer_space(ds->ds_dir, -used - delta, |
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174 DD_USED_REFRSRV, DD_USED_HEAD, tx); |
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175 mutex_exit(&ds->ds_dir->dd_lock); |
| 789 | 176 } else { |
| 177 dprintf_bp(bp, "putting on dead list: %s", ""); | |
| 1544 | 178 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, bp, tx)); |
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179 ASSERT3U(ds->ds_prev->ds_object, ==, |
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180 ds->ds_phys->ds_prev_snap_obj); |
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181 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0); |
| 789 | 182 /* if (bp->blk_birth > prev prev snap txg) prev unique += bs */ |
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183 if (ds->ds_prev->ds_phys->ds_next_snap_obj == |
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184 ds->ds_object && bp->blk_birth > |
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185 ds->ds_prev->ds_phys->ds_prev_snap_txg) { |
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186 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); |
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187 mutex_enter(&ds->ds_prev->ds_lock); |
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188 ds->ds_prev->ds_phys->ds_unique_bytes += used; |
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189 mutex_exit(&ds->ds_prev->ds_lock); |
| 789 | 190 } |
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191 if (bp->blk_birth > ds->ds_origin_txg) { |
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192 dsl_dir_transfer_space(ds->ds_dir, used, |
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193 DD_USED_HEAD, DD_USED_SNAP, tx); |
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194 } |
| 789 | 195 } |
| 196 mutex_enter(&ds->ds_lock); | |
| 197 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used); | |
| 198 ds->ds_phys->ds_used_bytes -= used; | |
| 199 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed); | |
| 200 ds->ds_phys->ds_compressed_bytes -= compressed; | |
| 201 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed); | |
| 202 ds->ds_phys->ds_uncompressed_bytes -= uncompressed; | |
| 203 mutex_exit(&ds->ds_lock); | |
| 6992 | 204 |
| 205 return (used); | |
| 789 | 206 } |
| 207 | |
| 1544 | 208 uint64_t |
| 209 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds) | |
| 789 | 210 { |
| 2885 | 211 uint64_t trysnap = 0; |
| 212 | |
| 789 | 213 if (ds == NULL) |
| 1544 | 214 return (0); |
| 789 | 215 /* |
| 216 * The snapshot creation could fail, but that would cause an | |
| 217 * incorrect FALSE return, which would only result in an | |
| 218 * overestimation of the amount of space that an operation would | |
| 219 * consume, which is OK. | |
| 220 * | |
| 221 * There's also a small window where we could miss a pending | |
| 222 * snapshot, because we could set the sync task in the quiescing | |
| 223 * phase. So this should only be used as a guess. | |
| 224 */ | |
| 2885 | 225 if (ds->ds_trysnap_txg > |
| 226 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa)) | |
| 227 trysnap = ds->ds_trysnap_txg; | |
| 228 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap)); | |
| 1544 | 229 } |
| 230 | |
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231 boolean_t |
| 1544 | 232 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth) |
| 233 { | |
| 234 return (blk_birth > dsl_dataset_prev_snap_txg(ds)); | |
| 789 | 235 } |
| 236 | |
| 237 /* ARGSUSED */ | |
| 238 static void | |
| 239 dsl_dataset_evict(dmu_buf_t *db, void *dsv) | |
| 240 { | |
| 241 dsl_dataset_t *ds = dsv; | |
| 242 | |
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243 ASSERT(ds->ds_owner == NULL || DSL_DATASET_IS_DESTROYED(ds)); |
| 789 | 244 |
| 4787 | 245 unique_remove(ds->ds_fsid_guid); |
| 789 | 246 |
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247 if (ds->ds_objset != NULL) |
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248 dmu_objset_evict(ds->ds_objset); |
| 789 | 249 |
| 250 if (ds->ds_prev) { | |
|
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251 dsl_dataset_drop_ref(ds->ds_prev, ds); |
| 789 | 252 ds->ds_prev = NULL; |
| 253 } | |
| 254 | |
| 255 bplist_close(&ds->ds_deadlist); | |
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256 if (ds->ds_dir) |
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257 dsl_dir_close(ds->ds_dir, ds); |
| 789 | 258 |
| 4787 | 259 ASSERT(!list_link_active(&ds->ds_synced_link)); |
| 789 | 260 |
| 2856 | 261 mutex_destroy(&ds->ds_lock); |
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262 mutex_destroy(&ds->ds_recvlock); |
| 4787 | 263 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 264 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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265 rw_destroy(&ds->ds_rwlock); |
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266 cv_destroy(&ds->ds_exclusive_cv); |
| 2856 | 267 |
| 789 | 268 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 269 } | |
| 270 | |
| 1544 | 271 static int |
| 789 | 272 dsl_dataset_get_snapname(dsl_dataset_t *ds) |
| 273 { | |
| 274 dsl_dataset_phys_t *headphys; | |
| 275 int err; | |
| 276 dmu_buf_t *headdbuf; | |
| 277 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 278 objset_t *mos = dp->dp_meta_objset; | |
| 279 | |
| 280 if (ds->ds_snapname[0]) | |
| 1544 | 281 return (0); |
| 789 | 282 if (ds->ds_phys->ds_next_snap_obj == 0) |
| 1544 | 283 return (0); |
| 789 | 284 |
| 1544 | 285 err = dmu_bonus_hold(mos, ds->ds_dir->dd_phys->dd_head_dataset_obj, |
| 286 FTAG, &headdbuf); | |
| 287 if (err) | |
| 288 return (err); | |
| 789 | 289 headphys = headdbuf->db_data; |
| 290 err = zap_value_search(dp->dp_meta_objset, | |
| 4577 | 291 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname); |
| 1544 | 292 dmu_buf_rele(headdbuf, FTAG); |
| 293 return (err); | |
| 789 | 294 } |
| 295 | |
|
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296 static int |
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297 dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, uint64_t *value) |
|
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298 { |
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299 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
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300 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; |
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301 matchtype_t mt; |
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302 int err; |
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303 |
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304 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET) |
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305 mt = MT_FIRST; |
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306 else |
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307 mt = MT_EXACT; |
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308 |
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309 err = zap_lookup_norm(mos, snapobj, name, 8, 1, |
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310 value, mt, NULL, 0, NULL); |
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311 if (err == ENOTSUP && mt == MT_FIRST) |
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312 err = zap_lookup(mos, snapobj, name, 8, 1, value); |
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313 return (err); |
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314 } |
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315 |
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316 static int |
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317 dsl_dataset_snap_remove(dsl_dataset_t *ds, char *name, dmu_tx_t *tx) |
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318 { |
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319 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
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320 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; |
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321 matchtype_t mt; |
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322 int err; |
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323 |
|
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324 dsl_dir_snap_cmtime_update(ds->ds_dir); |
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325 |
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326 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET) |
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327 mt = MT_FIRST; |
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328 else |
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329 mt = MT_EXACT; |
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330 |
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331 err = zap_remove_norm(mos, snapobj, name, mt, tx); |
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332 if (err == ENOTSUP && mt == MT_FIRST) |
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333 err = zap_remove(mos, snapobj, name, tx); |
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334 return (err); |
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335 } |
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336 |
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337 static int |
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338 dsl_dataset_get_ref(dsl_pool_t *dp, uint64_t dsobj, void *tag, |
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339 dsl_dataset_t **dsp) |
| 789 | 340 { |
| 341 objset_t *mos = dp->dp_meta_objset; | |
| 342 dmu_buf_t *dbuf; | |
| 343 dsl_dataset_t *ds; | |
| 1544 | 344 int err; |
| 789 | 345 |
| 346 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || | |
| 347 dsl_pool_sync_context(dp)); | |
| 348 | |
| 1544 | 349 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf); |
| 350 if (err) | |
| 351 return (err); | |
| 789 | 352 ds = dmu_buf_get_user(dbuf); |
| 353 if (ds == NULL) { | |
| 354 dsl_dataset_t *winner; | |
| 355 | |
| 356 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP); | |
| 357 ds->ds_dbuf = dbuf; | |
| 358 ds->ds_object = dsobj; | |
| 359 ds->ds_phys = dbuf->db_data; | |
| 360 | |
| 2856 | 361 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL); |
|
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362 mutex_init(&ds->ds_recvlock, NULL, MUTEX_DEFAULT, NULL); |
| 4787 | 363 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 364 mutex_init(&ds->ds_deadlist.bpl_lock, NULL, MUTEX_DEFAULT, |
| 365 NULL); | |
|
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366 rw_init(&ds->ds_rwlock, 0, 0, 0); |
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367 cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL); |
| 2856 | 368 |
| 1544 | 369 err = bplist_open(&ds->ds_deadlist, |
| 789 | 370 mos, ds->ds_phys->ds_deadlist_obj); |
| 1544 | 371 if (err == 0) { |
| 372 err = dsl_dir_open_obj(dp, | |
| 373 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir); | |
| 374 } | |
| 375 if (err) { | |
| 376 /* | |
| 377 * we don't really need to close the blist if we | |
| 378 * just opened it. | |
| 379 */ | |
| 2856 | 380 mutex_destroy(&ds->ds_lock); |
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381 mutex_destroy(&ds->ds_recvlock); |
| 4787 | 382 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 383 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
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384 rw_destroy(&ds->ds_rwlock); |
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385 cv_destroy(&ds->ds_exclusive_cv); |
| 1544 | 386 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 387 dmu_buf_rele(dbuf, tag); | |
| 388 return (err); | |
| 389 } | |
| 789 | 390 |
|
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391 if (!dsl_dataset_is_snapshot(ds)) { |
| 789 | 392 ds->ds_snapname[0] = '\0'; |
| 393 if (ds->ds_phys->ds_prev_snap_obj) { | |
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394 err = dsl_dataset_get_ref(dp, |
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395 ds->ds_phys->ds_prev_snap_obj, |
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396 ds, &ds->ds_prev); |
| 789 | 397 } |
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398 |
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399 if (err == 0 && dsl_dir_is_clone(ds->ds_dir)) { |
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400 dsl_dataset_t *origin; |
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401 |
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402 err = dsl_dataset_hold_obj(dp, |
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403 ds->ds_dir->dd_phys->dd_origin_obj, |
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404 FTAG, &origin); |
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405 if (err == 0) { |
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406 ds->ds_origin_txg = |
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407 origin->ds_phys->ds_creation_txg; |
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408 dsl_dataset_rele(origin, FTAG); |
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409 } |
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410 } |
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411 } else { |
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412 if (zfs_flags & ZFS_DEBUG_SNAPNAMES) |
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413 err = dsl_dataset_get_snapname(ds); |
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414 if (err == 0 && ds->ds_phys->ds_userrefs_obj != 0) { |
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415 err = zap_count( |
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416 ds->ds_dir->dd_pool->dp_meta_objset, |
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417 ds->ds_phys->ds_userrefs_obj, |
|
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418 &ds->ds_userrefs); |
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|
419 } |
| 789 | 420 } |
| 421 | |
|
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parents:
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diff
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|
422 if (err == 0 && !dsl_dataset_is_snapshot(ds)) { |
|
5569
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6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD
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423 /* |
|
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424 * In sync context, we're called with either no lock |
|
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425 * or with the write lock. If we're not syncing, |
|
d3caac36d311
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426 * we're always called with the read lock held. |
|
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427 */ |
|
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428 boolean_t need_lock = |
|
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429 !RW_WRITE_HELD(&dp->dp_config_rwlock) && |
|
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430 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
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431 |
|
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432 if (need_lock) |
|
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|
433 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
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434 |
| 7265 | 435 err = dsl_prop_get_ds(ds, |
|
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|
436 "refreservation", sizeof (uint64_t), 1, |
|
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437 &ds->ds_reserved, NULL); |
|
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438 if (err == 0) { |
| 7265 | 439 err = dsl_prop_get_ds(ds, |
|
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440 "refquota", sizeof (uint64_t), 1, |
|
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441 &ds->ds_quota, NULL); |
|
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442 } |
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443 |
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444 if (need_lock) |
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445 rw_exit(&dp->dp_config_rwlock); |
|
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446 } else { |
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|
447 ds->ds_reserved = ds->ds_quota = 0; |
|
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448 } |
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|
449 |
| 1544 | 450 if (err == 0) { |
| 451 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys, | |
| 452 dsl_dataset_evict); | |
| 453 } | |
| 454 if (err || winner) { | |
| 789 | 455 bplist_close(&ds->ds_deadlist); |
|
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456 if (ds->ds_prev) |
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457 dsl_dataset_drop_ref(ds->ds_prev, ds); |
| 789 | 458 dsl_dir_close(ds->ds_dir, ds); |
| 2856 | 459 mutex_destroy(&ds->ds_lock); |
|
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parents:
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diff
changeset
|
460 mutex_destroy(&ds->ds_recvlock); |
| 4787 | 461 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 462 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
|
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463 rw_destroy(&ds->ds_rwlock); |
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464 cv_destroy(&ds->ds_exclusive_cv); |
| 789 | 465 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 1544 | 466 if (err) { |
| 467 dmu_buf_rele(dbuf, tag); | |
| 468 return (err); | |
| 469 } | |
| 789 | 470 ds = winner; |
| 471 } else { | |
| 4787 | 472 ds->ds_fsid_guid = |
| 789 | 473 unique_insert(ds->ds_phys->ds_fsid_guid); |
| 474 } | |
| 475 } | |
| 476 ASSERT3P(ds->ds_dbuf, ==, dbuf); | |
| 477 ASSERT3P(ds->ds_phys, ==, dbuf->db_data); | |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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parents:
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diff
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|
478 ASSERT(ds->ds_phys->ds_prev_snap_obj != 0 || |
|
7061
524fec1acf1c
6723703 zpool upgrade -> assertion failed: ds->ds_phys->ds_prev_snap_obj != 0 || ...
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parents:
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diff
changeset
|
479 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 ...
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|
480 dp->dp_origin_snap == NULL || ds == dp->dp_origin_snap); |
| 789 | 481 mutex_enter(&ds->ds_lock); |
|
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482 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) { |
| 789 | 483 mutex_exit(&ds->ds_lock); |
|
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484 dmu_buf_rele(ds->ds_dbuf, tag); |
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485 return (ENOENT); |
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|
486 } |
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487 mutex_exit(&ds->ds_lock); |
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488 *dsp = ds; |
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489 return (0); |
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490 } |
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491 |
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492 static int |
|
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|
493 dsl_dataset_hold_ref(dsl_dataset_t *ds, void *tag) |
|
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494 { |
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|
495 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
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|
496 |
|
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497 /* |
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498 * In syncing context we don't want the rwlock lock: there |
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499 * may be an existing writer waiting for sync phase to |
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500 * finish. We don't need to worry about such writers, since |
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501 * sync phase is single-threaded, so the writer can't be |
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502 * doing anything while we are active. |
|
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503 */ |
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504 if (dsl_pool_sync_context(dp)) { |
|
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|
505 ASSERT(!DSL_DATASET_IS_DESTROYED(ds)); |
|
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|
506 return (0); |
| 789 | 507 } |
|
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|
508 |
|
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|
509 /* |
|
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|
510 * Normal users will hold the ds_rwlock as a READER until they |
|
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|
511 * are finished (i.e., call dsl_dataset_rele()). "Owners" will |
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512 * drop their READER lock after they set the ds_owner field. |
|
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|
513 * |
|
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514 * If the dataset is being destroyed, the destroy thread will |
|
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|
515 * obtain a WRITER lock for exclusive access after it's done its |
|
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516 * open-context work and then change the ds_owner to |
|
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517 * dsl_reaper once destruction is assured. So threads |
|
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518 * may block here temporarily, until the "destructability" of |
|
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|
519 * the dataset is determined. |
|
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|
520 */ |
|
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|
521 ASSERT(!RW_WRITE_HELD(&dp->dp_config_rwlock)); |
|
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|
522 mutex_enter(&ds->ds_lock); |
|
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523 while (!rw_tryenter(&ds->ds_rwlock, RW_READER)) { |
|
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|
524 rw_exit(&dp->dp_config_rwlock); |
|
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|
525 cv_wait(&ds->ds_exclusive_cv, &ds->ds_lock); |
|
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|
526 if (DSL_DATASET_IS_DESTROYED(ds)) { |
|
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|
527 mutex_exit(&ds->ds_lock); |
|
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|
528 dsl_dataset_drop_ref(ds, tag); |
|
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|
529 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
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|
530 return (ENOENT); |
|
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|
531 } |
|
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|
532 rw_enter(&dp->dp_config_rwlock, RW_READER); |
|
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|
533 } |
| 789 | 534 mutex_exit(&ds->ds_lock); |
| 1544 | 535 return (0); |
| 789 | 536 } |
| 537 | |
| 538 int | |
|
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|
539 dsl_dataset_hold_obj(dsl_pool_t *dp, uint64_t dsobj, void *tag, |
|
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|
540 dsl_dataset_t **dsp) |
|
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541 { |
|
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|
542 int err = dsl_dataset_get_ref(dp, dsobj, tag, dsp); |
|
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|
543 |
|
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|
544 if (err) |
|
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|
545 return (err); |
|
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|
546 return (dsl_dataset_hold_ref(*dsp, tag)); |
|
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547 } |
|
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|
548 |
|
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|
549 int |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
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diff
changeset
|
550 dsl_dataset_own_obj(dsl_pool_t *dp, uint64_t dsobj, boolean_t inconsistentok, |
|
a0d52501437c
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551 void *tag, dsl_dataset_t **dsp) |
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552 { |
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553 int err = dsl_dataset_hold_obj(dp, dsobj, tag, dsp); |
|
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554 if (err) |
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555 return (err); |
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556 if (!dsl_dataset_tryown(*dsp, inconsistentok, tag)) { |
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557 dsl_dataset_rele(*dsp, tag); |
|
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558 *dsp = NULL; |
|
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559 return (EBUSY); |
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560 } |
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561 return (0); |
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562 } |
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563 |
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564 int |
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565 dsl_dataset_hold(const char *name, void *tag, dsl_dataset_t **dsp) |
| 789 | 566 { |
| 567 dsl_dir_t *dd; | |
| 568 dsl_pool_t *dp; | |
|
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569 const char *snapname; |
| 789 | 570 uint64_t obj; |
| 571 int err = 0; | |
| 572 | |
|
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573 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname); |
| 1544 | 574 if (err) |
| 575 return (err); | |
| 789 | 576 |
| 577 dp = dd->dd_pool; | |
| 578 obj = dd->dd_phys->dd_head_dataset_obj; | |
| 579 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
|
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580 if (obj) |
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581 err = dsl_dataset_get_ref(dp, obj, tag, dsp); |
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582 else |
| 789 | 583 err = ENOENT; |
|
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584 if (err) |
| 789 | 585 goto out; |
|
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586 |
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587 err = dsl_dataset_hold_ref(*dsp, tag); |
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588 |
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589 /* we may be looking for a snapshot */ |
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590 if (err == 0 && snapname != NULL) { |
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591 dsl_dataset_t *ds = NULL; |
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592 |
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593 if (*snapname++ != '@') { |
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594 dsl_dataset_rele(*dsp, tag); |
| 789 | 595 err = ENOENT; |
| 596 goto out; | |
| 597 } | |
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598 |
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599 dprintf("looking for snapshot '%s'\n", snapname); |
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600 err = dsl_dataset_snap_lookup(*dsp, snapname, &obj); |
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601 if (err == 0) |
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602 err = dsl_dataset_get_ref(dp, obj, tag, &ds); |
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603 dsl_dataset_rele(*dsp, tag); |
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604 |
|
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605 ASSERT3U((err == 0), ==, (ds != NULL)); |
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606 |
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607 if (ds) { |
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608 mutex_enter(&ds->ds_lock); |
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609 if (ds->ds_snapname[0] == 0) |
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610 (void) strlcpy(ds->ds_snapname, snapname, |
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611 sizeof (ds->ds_snapname)); |
|
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612 mutex_exit(&ds->ds_lock); |
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613 err = dsl_dataset_hold_ref(ds, tag); |
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614 *dsp = err ? NULL : ds; |
| 789 | 615 } |
| 616 } | |
| 617 out: | |
| 618 rw_exit(&dp->dp_config_rwlock); | |
| 619 dsl_dir_close(dd, FTAG); | |
| 620 return (err); | |
| 621 } | |
| 622 | |
| 623 int | |
|
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624 dsl_dataset_own(const char *name, boolean_t inconsistentok, |
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625 void *tag, dsl_dataset_t **dsp) |
| 789 | 626 { |
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627 int err = dsl_dataset_hold(name, tag, dsp); |
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628 if (err) |
|
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629 return (err); |
|
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630 if (!dsl_dataset_tryown(*dsp, inconsistentok, tag)) { |
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631 dsl_dataset_rele(*dsp, tag); |
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632 return (EBUSY); |
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633 } |
|
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|
634 return (0); |
| 789 | 635 } |
| 636 | |
| 637 void | |
| 638 dsl_dataset_name(dsl_dataset_t *ds, char *name) | |
| 639 { | |
| 640 if (ds == NULL) { | |
| 641 (void) strcpy(name, "mos"); | |
| 642 } else { | |
| 643 dsl_dir_name(ds->ds_dir, name); | |
| 1544 | 644 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 645 if (ds->ds_snapname[0]) { |
| 646 (void) strcat(name, "@"); | |
|
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647 /* |
|
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648 * We use a "recursive" mutex so that we |
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649 * can call dprintf_ds() with ds_lock held. |
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650 */ |
| 789 | 651 if (!MUTEX_HELD(&ds->ds_lock)) { |
| 652 mutex_enter(&ds->ds_lock); | |
| 653 (void) strcat(name, ds->ds_snapname); | |
| 654 mutex_exit(&ds->ds_lock); | |
| 655 } else { | |
| 656 (void) strcat(name, ds->ds_snapname); | |
| 657 } | |
| 658 } | |
| 659 } | |
| 660 } | |
| 661 | |
|
3978
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|
662 static int |
|
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|
663 dsl_dataset_namelen(dsl_dataset_t *ds) |
|
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|
664 { |
|
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|
665 int result; |
|
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|
666 |
|
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|
667 if (ds == NULL) { |
|
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|
668 result = 3; /* "mos" */ |
|
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|
669 } else { |
|
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|
670 result = dsl_dir_namelen(ds->ds_dir); |
|
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|
671 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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|
672 if (ds->ds_snapname[0]) { |
|
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|
673 ++result; /* adding one for the @-sign */ |
|
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|
674 if (!MUTEX_HELD(&ds->ds_lock)) { |
|
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|
675 mutex_enter(&ds->ds_lock); |
|
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|
676 result += strlen(ds->ds_snapname); |
|
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|
677 mutex_exit(&ds->ds_lock); |
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|
678 } else { |
|
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|
679 result += strlen(ds->ds_snapname); |
|
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|
680 } |
|
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|
681 } |
|
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|
682 } |
|
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|
683 |
|
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|
684 return (result); |
|
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|
685 } |
|
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|
686 |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
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|
687 void |
|
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|
688 dsl_dataset_drop_ref(dsl_dataset_t *ds, void *tag) |
| 789 | 689 { |
| 1544 | 690 dmu_buf_rele(ds->ds_dbuf, tag); |
| 789 | 691 } |
| 692 | |
| 693 void | |
|
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|
694 dsl_dataset_rele(dsl_dataset_t *ds, void *tag) |
| 5367 | 695 { |
|
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|
696 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) { |
|
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|
697 rw_exit(&ds->ds_rwlock); |
|
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|
698 } |
|
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|
699 dsl_dataset_drop_ref(ds, tag); |
|
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|
700 } |
|
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|
701 |
|
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|
702 void |
|
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|
703 dsl_dataset_disown(dsl_dataset_t *ds, void *tag) |
|
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|
704 { |
|
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|
705 ASSERT((ds->ds_owner == tag && ds->ds_dbuf) || |
|
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|
706 (DSL_DATASET_IS_DESTROYED(ds) && ds->ds_dbuf == NULL)); |
|
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|
707 |
| 5367 | 708 mutex_enter(&ds->ds_lock); |
|
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|
709 ds->ds_owner = NULL; |
|
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|
710 if (RW_WRITE_HELD(&ds->ds_rwlock)) { |
|
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|
711 rw_exit(&ds->ds_rwlock); |
|
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|
712 cv_broadcast(&ds->ds_exclusive_cv); |
|
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713 } |
| 5367 | 714 mutex_exit(&ds->ds_lock); |
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715 if (ds->ds_dbuf) |
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716 dsl_dataset_drop_ref(ds, tag); |
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717 else |
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718 dsl_dataset_evict(ds->ds_dbuf, ds); |
| 5367 | 719 } |
| 720 | |
| 721 boolean_t | |
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722 dsl_dataset_tryown(dsl_dataset_t *ds, boolean_t inconsistentok, void *tag) |
| 5367 | 723 { |
|
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724 boolean_t gotit = FALSE; |
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725 |
| 5367 | 726 mutex_enter(&ds->ds_lock); |
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727 if (ds->ds_owner == NULL && |
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728 (!DS_IS_INCONSISTENT(ds) || inconsistentok)) { |
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729 ds->ds_owner = tag; |
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730 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) |
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731 rw_exit(&ds->ds_rwlock); |
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732 gotit = TRUE; |
| 5367 | 733 } |
| 734 mutex_exit(&ds->ds_lock); | |
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735 return (gotit); |
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736 } |
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737 |
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738 void |
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739 dsl_dataset_make_exclusive(dsl_dataset_t *ds, void *owner) |
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740 { |
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741 ASSERT3P(owner, ==, ds->ds_owner); |
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742 if (!RW_WRITE_HELD(&ds->ds_rwlock)) |
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743 rw_enter(&ds->ds_rwlock, RW_WRITER); |
| 5367 | 744 } |
| 745 | |
| 2199 | 746 uint64_t |
|
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747 dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin, |
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748 uint64_t flags, dmu_tx_t *tx) |
| 789 | 749 { |
| 5367 | 750 dsl_pool_t *dp = dd->dd_pool; |
| 789 | 751 dmu_buf_t *dbuf; |
| 752 dsl_dataset_phys_t *dsphys; | |
| 5367 | 753 uint64_t dsobj; |
| 789 | 754 objset_t *mos = dp->dp_meta_objset; |
| 755 | |
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756 if (origin == NULL) |
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757 origin = dp->dp_origin_snap; |
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758 |
| 5367 | 759 ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp); |
| 760 ASSERT(origin == NULL || origin->ds_phys->ds_num_children > 0); | |
| 789 | 761 ASSERT(dmu_tx_is_syncing(tx)); |
| 5367 | 762 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0); |
| 789 | 763 |
|
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764 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
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765 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 766 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 767 dmu_buf_will_dirty(dbuf, tx); |
| 768 dsphys = dbuf->db_data; | |
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769 bzero(dsphys, sizeof (dsl_dataset_phys_t)); |
| 789 | 770 dsphys->ds_dir_obj = dd->dd_object; |
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771 dsphys->ds_flags = flags; |
| 789 | 772 dsphys->ds_fsid_guid = unique_create(); |
| 773 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 774 sizeof (dsphys->ds_guid)); | |
| 775 dsphys->ds_snapnames_zapobj = | |
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776 zap_create_norm(mos, U8_TEXTPREP_TOUPPER, DMU_OT_DSL_DS_SNAP_MAP, |
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777 DMU_OT_NONE, 0, tx); |
| 789 | 778 dsphys->ds_creation_time = gethrestime_sec(); |
|
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779 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg; |
| 789 | 780 dsphys->ds_deadlist_obj = |
| 781 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
|
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782 |
| 5367 | 783 if (origin) { |
| 784 dsphys->ds_prev_snap_obj = origin->ds_object; | |
| 789 | 785 dsphys->ds_prev_snap_txg = |
| 5367 | 786 origin->ds_phys->ds_creation_txg; |
| 789 | 787 dsphys->ds_used_bytes = |
| 5367 | 788 origin->ds_phys->ds_used_bytes; |
| 789 | 789 dsphys->ds_compressed_bytes = |
| 5367 | 790 origin->ds_phys->ds_compressed_bytes; |
| 789 | 791 dsphys->ds_uncompressed_bytes = |
| 5367 | 792 origin->ds_phys->ds_uncompressed_bytes; |
| 793 dsphys->ds_bp = origin->ds_phys->ds_bp; | |
|
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794 dsphys->ds_flags |= origin->ds_phys->ds_flags; |
| 789 | 795 |
| 5367 | 796 dmu_buf_will_dirty(origin->ds_dbuf, tx); |
| 797 origin->ds_phys->ds_num_children++; | |
| 789 | 798 |
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799 if (spa_version(dp->dp_spa) >= SPA_VERSION_NEXT_CLONES) { |
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800 if (origin->ds_phys->ds_next_clones_obj == 0) { |
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801 origin->ds_phys->ds_next_clones_obj = |
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802 zap_create(mos, |
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803 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx); |
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804 } |
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805 VERIFY(0 == zap_add_int(mos, |
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806 origin->ds_phys->ds_next_clones_obj, |
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807 dsobj, tx)); |
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808 } |
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809 |
| 789 | 810 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
| 5367 | 811 dd->dd_phys->dd_origin_obj = origin->ds_object; |
| 789 | 812 } |
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813 |
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814 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE) |
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815 dsphys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
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816 |
| 1544 | 817 dmu_buf_rele(dbuf, FTAG); |
| 789 | 818 |
| 819 dmu_buf_will_dirty(dd->dd_dbuf, tx); | |
| 820 dd->dd_phys->dd_head_dataset_obj = dsobj; | |
| 5367 | 821 |
| 822 return (dsobj); | |
| 823 } | |
| 824 | |
| 825 uint64_t | |
|
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826 dsl_dataset_create_sync(dsl_dir_t *pdd, const char *lastname, |
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827 dsl_dataset_t *origin, uint64_t flags, cred_t *cr, dmu_tx_t *tx) |
| 5367 | 828 { |
| 829 dsl_pool_t *dp = pdd->dd_pool; | |
| 830 uint64_t dsobj, ddobj; | |
| 831 dsl_dir_t *dd; | |
| 832 | |
| 833 ASSERT(lastname[0] != '@'); | |
| 834 | |
|
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835 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx); |
| 5367 | 836 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd)); |
| 837 | |
|
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838 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx); |
| 5367 | 839 |
| 840 dsl_deleg_set_create_perms(dd, tx, cr); | |
| 841 | |
| 789 | 842 dsl_dir_close(dd, FTAG); |
| 843 | |
| 2199 | 844 return (dsobj); |
| 845 } | |
| 846 | |
| 847 struct destroyarg { | |
| 848 dsl_sync_task_group_t *dstg; | |
| 849 char *snapname; | |
| 850 char *failed; | |
|
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851 boolean_t defer; |
| 2199 | 852 }; |
| 853 | |
| 854 static int | |
| 855 dsl_snapshot_destroy_one(char *name, void *arg) | |
| 856 { | |
| 857 struct destroyarg *da = arg; | |
| 858 dsl_dataset_t *ds; | |
| 859 int err; | |
|
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860 char *dsname; |
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861 |
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862 dsname = kmem_asprintf("%s@%s", name, da->snapname); |
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863 err = dsl_dataset_own(dsname, B_TRUE, da->dstg, &ds); |
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864 strfree(dsname); |
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865 if (err == 0) { |
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866 struct dsl_ds_destroyarg *dsda; |
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867 |
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868 dsl_dataset_make_exclusive(ds, da->dstg); |
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869 if (ds->ds_objset != NULL) { |
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870 dmu_objset_evict(ds->ds_objset); |
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871 ds->ds_objset = NULL; |
|
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872 } |
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873 dsda = kmem_zalloc(sizeof (struct dsl_ds_destroyarg), KM_SLEEP); |
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874 dsda->ds = ds; |
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875 dsda->defer = da->defer; |
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876 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check, |
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877 dsl_dataset_destroy_sync, dsda, da->dstg, 0); |
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878 } else if (err == ENOENT) { |
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879 err = 0; |
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880 } else { |
| 2199 | 881 (void) strcpy(da->failed, name); |
| 882 } | |
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883 return (err); |
| 789 | 884 } |
| 885 | |
| 2199 | 886 /* |
| 887 * Destroy 'snapname' in all descendants of 'fsname'. | |
| 888 */ | |
| 889 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy | |
| 890 int | |
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891 dsl_snapshots_destroy(char *fsname, char *snapname, boolean_t defer) |
| 2199 | 892 { |
| 893 int err; | |
| 894 struct destroyarg da; | |
| 895 dsl_sync_task_t *dst; | |
| 896 spa_t *spa; | |
| 897 | |
|
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898 err = spa_open(fsname, &spa, FTAG); |
| 2199 | 899 if (err) |
| 900 return (err); | |
| 901 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); | |
| 902 da.snapname = snapname; | |
| 903 da.failed = fsname; | |
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904 da.defer = defer; |
| 2199 | 905 |
| 906 err = dmu_objset_find(fsname, | |
| 2417 | 907 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN); |
| 2199 | 908 |
| 909 if (err == 0) | |
| 910 err = dsl_sync_task_group_wait(da.dstg); | |
| 911 | |
| 912 for (dst = list_head(&da.dstg->dstg_tasks); dst; | |
| 913 dst = list_next(&da.dstg->dstg_tasks, dst)) { | |
|
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PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
914 struct dsl_ds_destroyarg *dsda = dst->dst_arg1; |
|
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PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
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diff
changeset
|
915 dsl_dataset_t *ds = dsda->ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
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diff
changeset
|
916 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
917 /* |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
918 * 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
|
919 */ |
| 2199 | 920 if (dst->dst_err) { |
| 921 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
|
922 *strchr(fsname, '@') = '\0'; |
| 2199 | 923 } |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
924 ASSERT3P(dsda->rm_origin, ==, NULL); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
925 dsl_dataset_disown(ds, da.dstg); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
926 kmem_free(dsda, sizeof (struct dsl_ds_destroyarg)); |
| 2199 | 927 } |
| 928 | |
| 929 dsl_sync_task_group_destroy(da.dstg); | |
| 930 spa_close(spa, FTAG); | |
| 931 return (err); | |
| 932 } | |
| 933 | |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
934 static boolean_t |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
935 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
|
936 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
937 boolean_t might_destroy = B_FALSE; |
|
c40d075fbca6
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parents:
10204
diff
changeset
|
938 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
939 mutex_enter(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
940 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
|
941 DS_IS_DEFER_DESTROY(ds)) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
942 might_destroy = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
943 mutex_exit(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
944 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
945 return (might_destroy); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
946 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
947 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
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diff
changeset
|
948 #ifdef _KERNEL |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
949 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
950 dsl_dataset_zvol_cleanup(dsl_dataset_t *ds, const char *name) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
951 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
952 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
953 objset_t *os; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
954 |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
955 error = dmu_objset_from_ds(ds, &os); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
956 if (error) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
957 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
958 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
959 if (dmu_objset_type(os) == DMU_OST_ZVOL) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
960 error = zvol_remove_minor(name); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
961 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
962 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
963 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
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diff
changeset
|
964 #endif |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
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diff
changeset
|
965 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
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diff
changeset
|
966 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
967 * 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
|
968 * 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
|
969 * 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
|
970 * 3) the clone's origin has been marked for deferred destruction |
|
c40d075fbca6
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Chris Kirby <chris.kirby@sun.com>
parents:
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diff
changeset
|
971 * Then, prepare to remove the origin as part of this sync task group. |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
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diff
changeset
|
972 */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
973 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
974 dsl_dataset_origin_rm_prep(struct dsl_ds_destroyarg *dsda, void *tag) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
975 { |
|
c40d075fbca6
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Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
976 dsl_dataset_t *ds = dsda->ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
977 dsl_dataset_t *origin = ds->ds_prev; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
978 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
979 if (dsl_dataset_might_destroy_origin(origin)) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
980 char *name; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
981 int namelen; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
982 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
983 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
984 namelen = dsl_dataset_namelen(origin) + 1; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
985 name = kmem_alloc(namelen, KM_SLEEP); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
986 dsl_dataset_name(origin, name); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
987 #ifdef _KERNEL |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
988 error = zfs_unmount_snap(name, NULL); |
|
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 kmem_free(name, namelen); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
991 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
992 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
993 error = dsl_dataset_zvol_cleanup(origin, name); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
994 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
995 kmem_free(name, namelen); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
996 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
997 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
998 #endif |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
999 error = dsl_dataset_own(name, B_TRUE, tag, &origin); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1000 kmem_free(name, namelen); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1001 if (error) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
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diff
changeset
|
1002 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
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diff
changeset
|
1003 dsda->rm_origin = origin; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1004 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
|
1005 |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
1006 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
|
1007 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
|
1008 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
|
1009 } |
|
10242
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PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1010 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1011 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1012 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1013 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
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diff
changeset
|
1014 |
| 5367 | 1015 /* |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1016 * 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
|
1017 * ds will be closed and caller can no longer dereference it. |
| 5367 | 1018 */ |
| 789 | 1019 int |
|
10242
c40d075fbca6
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10204
diff
changeset
|
1020 dsl_dataset_destroy(dsl_dataset_t *ds, void *tag, boolean_t defer) |
| 789 | 1021 { |
| 1022 int err; | |
| 2199 | 1023 dsl_sync_task_group_t *dstg; |
| 1024 objset_t *os; | |
| 789 | 1025 dsl_dir_t *dd; |
| 2199 | 1026 uint64_t obj; |
|
10242
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diff
changeset
|
1027 struct dsl_ds_destroyarg dsda = {0}; |
|
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10204
diff
changeset
|
1028 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1029 dsda.ds = ds; |
| 2199 | 1030 |
| 5367 | 1031 if (dsl_dataset_is_snapshot(ds)) { |
| 2199 | 1032 /* Destroying a snapshot is simpler */ |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1033 dsl_dataset_make_exclusive(ds, tag); |
|
7237
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
1034 |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
1035 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
|
1036 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
|
1037 ds->ds_objset = NULL; |
|
7237
f47d41541b14
PSARC 2008/393 zfs primarycache and secondarycache properties
ek110237
parents:
7077
diff
changeset
|
1038 } |
|
10242
c40d075fbca6
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diff
changeset
|
1039 /* NOTE: defer is always B_FALSE for non-snapshots */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1040 dsda.defer = defer; |
| 2199 | 1041 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 1042 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
|
1043 &dsda, tag, 0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
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parents:
10204
diff
changeset
|
1044 ASSERT3P(dsda.rm_origin, ==, NULL); |
| 5367 | 1045 goto out; |
| 2199 | 1046 } |
| 1047 | |
| 1048 dd = ds->ds_dir; | |
| 789 | 1049 |
| 2199 | 1050 /* |
| 1051 * Check for errors and mark this ds as inconsistent, in | |
| 1052 * case we crash while freeing the objects. | |
| 1053 */ | |
| 1054 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check, | |
| 1055 dsl_dataset_destroy_begin_sync, ds, NULL, 0); | |
| 5367 | 1056 if (err) |
| 1057 goto out; | |
| 1058 | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
1059 err = dmu_objset_from_ds(ds, &os); |
| 5367 | 1060 if (err) |
| 1061 goto out; | |
| 2199 | 1062 |
| 1063 /* | |
| 1064 * remove the objects in open context, so that we won't | |
| 1065 * have too much to do in syncing context. | |
| 1066 */ | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
1067 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
|
1068 ds->ds_phys->ds_prev_snap_txg)) { |
| 6992 | 1069 /* |
| 1070 * Ignore errors, if there is not enough disk space | |
| 1071 * we will deal with it in dsl_dataset_destroy_sync(). | |
| 1072 */ | |
| 1073 (void) dmu_free_object(os, obj); | |
| 2199 | 1074 } |
| 1075 | |
|
9396
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 * 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
|
1078 * (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
|
1079 * 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
|
1080 */ |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1081 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
|
1082 |
|
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 * 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
|
1085 * 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
|
1086 */ |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1087 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
|
1088 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
|
1089 uint64_t count; |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1090 |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1091 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
|
1092 count == 0); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1093 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
|
1094 count == 0); |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1095 } |
|
f41cf682d0d3
PSARC/2009/204 ZFS user/group quotas & space accounting
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
9390
diff
changeset
|
1096 |
| 2199 | 1097 if (err != ESRCH) |
| 5367 | 1098 goto out; |
| 2199 | 1099 |
|
6975
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1100 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
|
1101 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
|
1102 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
|
1103 |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1104 if (err) |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1105 goto out; |
|
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1106 |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
1107 if (ds->ds_objset) { |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1108 /* |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1109 * 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
|
1110 * 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
|
1111 * 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
|
1112 */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1113 txg_wait_synced(dd->dd_pool, 0); |
| 5367 | 1114 } |
| 1115 | |
| 2199 | 1116 /* |
| 1117 * Blow away the dsl_dir + head dataset. | |
| 1118 */ | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1119 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
|
1120 if (ds->ds_objset) { |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
1121 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
|
1122 ds->ds_objset = NULL; |
|
6975
c511f317869e
6717522 panic in dmu_objset_stats() due to freed objset_impl_t
maybee
parents:
6689
diff
changeset
|
1123 } |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1124 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1125 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1126 * 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
|
1127 * origin. |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1128 */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1129 do { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1130 dsda.need_prep = B_FALSE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1131 if (dsl_dir_is_clone(dd)) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1132 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
|
1133 if (err) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1134 dsl_dir_close(dd, FTAG); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1135 goto out; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1136 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1137 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1138 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1139 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
|
1140 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
|
1141 dsl_dataset_destroy_sync, &dsda, tag, 0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1142 dsl_sync_task_create(dstg, dsl_dir_destroy_check, |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1143 dsl_dir_destroy_sync, dd, FTAG, 0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1144 err = dsl_sync_task_group_wait(dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1145 dsl_sync_task_group_destroy(dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1146 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1147 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1148 * 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
|
1149 * 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
|
1150 * 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
|
1151 * do so. |
|
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.need_prep) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1154 ASSERT(err == EBUSY); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1155 ASSERT(dsl_dir_is_clone(dd)); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1156 ASSERT(dsda.rm_origin == NULL); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1157 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1158 } while (dsda.need_prep); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1159 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1160 if (dsda.rm_origin != NULL) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1161 dsl_dataset_disown(dsda.rm_origin, tag); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1162 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1163 /* if it is successful, dsl_dir_destroy_sync will close the dd */ |
| 5367 | 1164 if (err) |
| 2199 | 1165 dsl_dir_close(dd, FTAG); |
| 5367 | 1166 out: |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
1167 dsl_dataset_disown(ds, tag); |
| 789 | 1168 return (err); |
| 1169 } | |
| 1170 | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1171 blkptr_t * |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1172 dsl_dataset_get_blkptr(dsl_dataset_t *ds) |
| 789 | 1173 { |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1174 return (&ds->ds_phys->ds_bp); |
| 789 | 1175 } |
| 1176 | |
| 1177 void | |
| 1178 dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 1179 { | |
| 1180 ASSERT(dmu_tx_is_syncing(tx)); | |
| 1181 /* If it's the meta-objset, set dp_meta_rootbp */ | |
| 1182 if (ds == NULL) { | |
| 1183 tx->tx_pool->dp_meta_rootbp = *bp; | |
| 1184 } else { | |
| 1185 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1186 ds->ds_phys->ds_bp = *bp; | |
| 1187 } | |
| 1188 } | |
| 1189 | |
| 1190 spa_t * | |
| 1191 dsl_dataset_get_spa(dsl_dataset_t *ds) | |
| 1192 { | |
| 1193 return (ds->ds_dir->dd_pool->dp_spa); | |
| 1194 } | |
| 1195 | |
| 1196 void | |
| 1197 dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx) | |
| 1198 { | |
| 1199 dsl_pool_t *dp; | |
| 1200 | |
| 1201 if (ds == NULL) /* this is the meta-objset */ | |
| 1202 return; | |
| 1203 | |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
1204 ASSERT(ds->ds_objset != NULL); |
| 2885 | 1205 |
| 1206 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 1207 panic("dirtying snapshot!"); | |
| 789 | 1208 |
| 1209 dp = ds->ds_dir->dd_pool; | |
| 1210 | |
| 1211 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) { | |
| 1212 /* up the hold count until we can be written out */ | |
| 1213 dmu_buf_add_ref(ds->ds_dbuf, ds); | |
| 1214 } | |
| 1215 } | |
| 1216 | |
|
5378
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 * 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
|
1219 * 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
|
1220 * 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
|
1221 * 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
|
1222 * 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
|
1223 * has been freed up since the snapshot was taken. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1224 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1225 static void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1226 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1227 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1228 uint64_t mrs_used; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1229 uint64_t dlused, dlcomp, dluncomp; |
|
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 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
|
1232 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1233 if (ds->ds_phys->ds_prev_snap_obj != 0) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1234 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
|
1235 else |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1236 mrs_used = 0; |
|
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 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1239 &dluncomp)); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1240 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1241 ASSERT3U(dlused, <=, mrs_used); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1242 ds->ds_phys->ds_unique_bytes = |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1243 ds->ds_phys->ds_used_bytes - (mrs_used - dlused); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1244 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1245 if (!DS_UNIQUE_IS_ACCURATE(ds) && |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1246 spa_version(ds->ds_dir->dd_pool->dp_spa) >= |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1247 SPA_VERSION_UNIQUE_ACCURATE) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1248 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
|
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 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1251 static uint64_t |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1252 dsl_dataset_unique(dsl_dataset_t *ds) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1253 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1254 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
|
1255 dsl_dataset_recalc_head_uniq(ds); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1256 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1257 return (ds->ds_phys->ds_unique_bytes); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1258 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
1259 |
| 789 | 1260 struct killarg { |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
1261 dsl_dataset_t *ds; |
| 789 | 1262 zio_t *zio; |
| 1263 dmu_tx_t *tx; | |
| 1264 }; | |
| 1265 | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
1266 /* ARGSUSED */ |
| 789 | 1267 static int |
|
7837
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1268 kill_blkptr(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb, |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1269 const dnode_phys_t *dnp, void *arg) |
| 789 | 1270 { |
| 1271 struct killarg *ka = arg; | |
|
7837
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1272 |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
1273 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
|
1274 return (0); |
| 789 | 1275 |
|
8746
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1276 if ((zb->zb_level == -1ULL && zb->zb_blkid != 0) || |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1277 (zb->zb_object != 0 && dnp == NULL)) { |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1278 /* |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1279 * 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
|
1280 * accounting, so just free it. |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1281 */ |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1282 VERIFY3U(0, ==, dsl_free(ka->zio, ka->tx->tx_pool, |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1283 ka->tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT)); |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1284 } else { |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1285 ASSERT3U(bp->blk_birth, >, ka->ds->ds_phys->ds_prev_snap_txg); |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1286 (void) dsl_dataset_block_kill(ka->ds, bp, ka->zio, ka->tx); |
|
e1d96ca6808c
6796377 panic on rollback in space_map_add()
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
8525
diff
changeset
|
1287 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
1288 |
| 789 | 1289 return (0); |
| 1290 } | |
| 1291 | |
| 1292 /* ARGSUSED */ | |
| 2199 | 1293 static int |
| 1294 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
|
1295 { |
| 2199 | 1296 dsl_dataset_t *ds = arg1; |
| 5367 | 1297 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 1298 uint64_t count; | |
| 1299 int err; | |
|
1731
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1300 |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1301 /* |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1302 * 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
|
1303 * (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
|
1304 * from.) |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1305 */ |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1306 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
|
1307 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1308 return (EINVAL); |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1309 |
| 5367 | 1310 /* |
| 1311 * This is really a dsl_dir thing, but check it here so that | |
| 1312 * we'll be less likely to leave this dataset inconsistent & | |
| 1313 * nearly destroyed. | |
| 1314 */ | |
| 1315 err = zap_count(mos, ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count); | |
| 1316 if (err) | |
| 1317 return (err); | |
| 1318 if (count != 0) | |
| 1319 return (EEXIST); | |
| 1320 | |
|
1731
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1321 return (0); |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1322 } |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1323 |
| 2199 | 1324 /* ARGSUSED */ |
| 1325 static void | |
| 4543 | 1326 dsl_dataset_destroy_begin_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1327 { |
| 2199 | 1328 dsl_dataset_t *ds = arg1; |
| 4543 | 1329 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
| 789 | 1330 |
| 2199 | 1331 /* Mark it as inconsistent on-disk, in case we crash */ |
| 1332 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1333 ds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT; | |
| 4543 | 1334 |
| 1335 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx, | |
| 1336 cr, "dataset = %llu", ds->ds_object); | |
| 2199 | 1337 } |
| 789 | 1338 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1339 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1340 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
|
1341 dmu_tx_t *tx) |
|
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 dsl_dataset_t *ds = dsda->ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1344 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
|
1345 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1346 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
|
1347 struct dsl_ds_destroyarg ndsda = {0}; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1348 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1349 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1350 * 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
|
1351 * the clone either. |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1352 */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1353 if (dsda->rm_origin == NULL) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1354 dsda->need_prep = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1355 return (EBUSY); |
|
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 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1358 ndsda.ds = ds_prev; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1359 ndsda.is_origin_rm = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1360 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
|
1361 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1362 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1363 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1364 * 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
|
1365 * undo the open context setup. |
|
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 if (dsda->rm_origin != NULL) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1368 dsl_dataset_disown(dsda->rm_origin, tag); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1369 dsda->rm_origin = NULL; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1370 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1371 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1372 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
1373 } |
|
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1374 |
| 2199 | 1375 /* ARGSUSED */ |
| 5367 | 1376 int |
| 2199 | 1377 dsl_dataset_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 1378 { | |
|
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1379 struct dsl_ds_destroyarg *dsda = arg1; |
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1380 dsl_dataset_t *ds = dsda->ds; |
| 789 | 1381 |
|
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1382 /* we have an owner hold, so noone else can destroy us */ |
|
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1383 ASSERT(!DSL_DATASET_IS_DESTROYED(ds)); |
|
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1384 |
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1385 /* |
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1386 * Only allow deferred destroy on pools that support it. |
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1387 * NOTE: deferred destroy is only supported on snapshots. |
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1388 */ |
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1389 if (dsda->defer) { |
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1390 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < |
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1391 SPA_VERSION_USERREFS) |
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1392 return (ENOTSUP); |
|
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1393 ASSERT(dsl_dataset_is_snapshot(ds)); |
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1394 return (0); |
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1395 } |
| 789 | 1396 |
| 1397 /* | |
| 1398 * Can't delete a head dataset if there are snapshots of it. | |
| 1399 * (Except if the only snapshots are from the branch we cloned | |
| 1400 * from.) | |
| 1401 */ | |
| 1402 if (ds->ds_prev != NULL && | |
| 2199 | 1403 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
| 789 | 1404 return (EINVAL); |
| 1405 | |
| 1406 /* | |
| 1407 * If we made changes this txg, traverse_dsl_dataset won't find | |
| 1408 * them. Try again. | |
| 1409 */ | |
| 2199 | 1410 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 1411 return (EAGAIN); |
| 2199 | 1412 |
|
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1413 if (dsl_dataset_is_snapshot(ds)) { |
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1414 /* |
|
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1415 * If this snapshot has an elevated user reference count, |
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1416 * we can't destroy it yet. |
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1417 */ |
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1418 if (ds->ds_userrefs > 0 && !dsda->releasing) |
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1419 return (EBUSY); |
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1420 |
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1421 mutex_enter(&ds->ds_lock); |
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1422 /* |
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1423 * Can't delete a branch point. However, if we're destroying |
|
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1424 * a clone and removing its origin due to it having a user |
|
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1425 * hold count of 0 and having been marked for deferred destroy, |
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1426 * it's OK for the origin to have a single clone. |
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|
1427 */ |
|
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|
1428 if (ds->ds_phys->ds_num_children > |
|
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1429 (dsda->is_origin_rm ? 2 : 1)) { |
|
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|
1430 mutex_exit(&ds->ds_lock); |
|
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1431 return (EEXIST); |
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1432 } |
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|
1433 mutex_exit(&ds->ds_lock); |
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1434 } else if (dsl_dir_is_clone(ds->ds_dir)) { |
|
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|
1435 return (dsl_dataset_origin_check(dsda, arg2, tx)); |
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1436 } |
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1437 |
| 2199 | 1438 /* XXX we should do some i/o error checking... */ |
| 1439 return (0); | |
| 1440 } | |
| 1441 | |
|
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1442 struct refsarg { |
|
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|
1443 kmutex_t lock; |
|
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|
1444 boolean_t gone; |
|
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|
1445 kcondvar_t cv; |
|
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|
1446 }; |
|
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1447 |
|
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1448 /* ARGSUSED */ |
|
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|
1449 static void |
|
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|
1450 dsl_dataset_refs_gone(dmu_buf_t *db, void *argv) |
|
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1451 { |
|
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1452 struct refsarg *arg = argv; |
|
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1453 |
|
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1454 mutex_enter(&arg->lock); |
|
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1455 arg->gone = TRUE; |
|
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|
1456 cv_signal(&arg->cv); |
|
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|
1457 mutex_exit(&arg->lock); |
|
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1458 } |
|
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|
1459 |
|
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|
1460 static void |
|
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|
1461 dsl_dataset_drain_refs(dsl_dataset_t *ds, void *tag) |
|
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|
1462 { |
|
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|
1463 struct refsarg arg; |
|
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1464 |
|
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|
1465 mutex_init(&arg.lock, NULL, MUTEX_DEFAULT, NULL); |
|
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|
1466 cv_init(&arg.cv, NULL, CV_DEFAULT, NULL); |
|
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|
1467 arg.gone = FALSE; |
|
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|
1468 (void) dmu_buf_update_user(ds->ds_dbuf, ds, &arg, &ds->ds_phys, |
|
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|
1469 dsl_dataset_refs_gone); |
|
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|
1470 dmu_buf_rele(ds->ds_dbuf, tag); |
|
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|
1471 mutex_enter(&arg.lock); |
|
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|
1472 while (!arg.gone) |
|
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|
1473 cv_wait(&arg.cv, &arg.lock); |
|
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|
1474 ASSERT(arg.gone); |
|
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|
1475 mutex_exit(&arg.lock); |
|
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|
1476 ds->ds_dbuf = NULL; |
|
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|
1477 ds->ds_phys = NULL; |
|
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|
1478 mutex_destroy(&arg.lock); |
|
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|
1479 cv_destroy(&arg.cv); |
|
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|
1480 } |
|
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|
1481 |
| 5367 | 1482 void |
| 4543 | 1483 dsl_dataset_destroy_sync(void *arg1, void *tag, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1484 { |
|
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1485 struct dsl_ds_destroyarg *dsda = arg1; |
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|
1486 dsl_dataset_t *ds = dsda->ds; |
| 2199 | 1487 zio_t *zio; |
| 1488 int err; | |
| 1489 int after_branch_point = FALSE; | |
| 1490 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 1491 objset_t *mos = dp->dp_meta_objset; | |
| 1492 dsl_dataset_t *ds_prev = NULL; | |
| 1493 uint64_t obj; | |
| 1494 | |
|
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1495 ASSERT(ds->ds_owner); |
|
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|
1496 ASSERT(dsda->defer || ds->ds_phys->ds_num_children <= 1); |
| 2199 | 1497 ASSERT(ds->ds_prev == NULL || |
| 1498 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object); | |
| 1499 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg); | |
| 1500 | |
|
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|
1501 if (dsda->defer) { |
|
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|
1502 ASSERT(spa_version(dp->dp_spa) >= SPA_VERSION_USERREFS); |
|
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|
1503 if (ds->ds_userrefs > 0 || ds->ds_phys->ds_num_children > 1) { |
|
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|
1504 dmu_buf_will_dirty(ds->ds_dbuf, tx); |
|
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|
1505 ds->ds_phys->ds_flags |= DS_FLAG_DEFER_DESTROY; |
|
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|
1506 return; |
|
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|
1507 } |
|
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|
1508 } |
|
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|
1509 |
|
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|
1510 /* signal any waiters that this dataset is going away */ |
|
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|
1511 mutex_enter(&ds->ds_lock); |
|
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|
1512 ds->ds_owner = dsl_reaper; |
|
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|
1513 cv_broadcast(&ds->ds_exclusive_cv); |
|
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|
1514 mutex_exit(&ds->ds_lock); |
|
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|
1515 |
|
5378
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changeset
|
1516 /* Remove our reservation */ |
|
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|
1517 if (ds->ds_reserved != 0) { |
|
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|
1518 uint64_t val = 0; |
|
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1519 dsl_dataset_set_reservation_sync(ds, &val, cr, tx); |
|
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1520 ASSERT3U(ds->ds_reserved, ==, 0); |
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1521 } |
|
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1522 |
| 2199 | 1523 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 1524 | |
|
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1525 dsl_pool_ds_destroyed(ds, tx); |
|
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1526 |
| 2199 | 1527 obj = ds->ds_object; |
| 789 | 1528 |
| 1529 if (ds->ds_phys->ds_prev_snap_obj != 0) { | |
| 1530 if (ds->ds_prev) { | |
| 1531 ds_prev = ds->ds_prev; | |
| 1532 } else { | |
|
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1533 VERIFY(0 == dsl_dataset_hold_obj(dp, |
|
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|
1534 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev)); |
| 789 | 1535 } |
| 1536 after_branch_point = | |
| 1537 (ds_prev->ds_phys->ds_next_snap_obj != obj); | |
| 1538 | |
| 1539 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx); | |
| 1540 if (after_branch_point && | |
|
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1541 ds_prev->ds_phys->ds_next_clones_obj != 0) { |
|
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1542 VERIFY3U(0, ==, zap_remove_int(mos, |
|
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1543 ds_prev->ds_phys->ds_next_clones_obj, obj, tx)); |
|
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1544 if (ds->ds_phys->ds_next_snap_obj != 0) { |
|
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1545 VERIFY(0 == zap_add_int(mos, |
|
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1546 ds_prev->ds_phys->ds_next_clones_obj, |
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1547 ds->ds_phys->ds_next_snap_obj, tx)); |
|
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1548 } |
|
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1549 } |
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1550 if (after_branch_point && |
| 789 | 1551 ds->ds_phys->ds_next_snap_obj == 0) { |
| 1552 /* This clone is toast. */ | |
| 1553 ASSERT(ds_prev->ds_phys->ds_num_children > 1); | |
| 1554 ds_prev->ds_phys->ds_num_children--; | |
|
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1555 |
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1556 /* |
|
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1557 * If the clone's origin has no other clones, no |
|
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1558 * user holds, and has been marked for deferred |
|
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1559 * deletion, then we should have done the necessary |
|
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1560 * destroy setup for it. |
|
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1561 */ |
|
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1562 if (ds_prev->ds_phys->ds_num_children == 1 && |
|
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1563 ds_prev->ds_userrefs == 0 && |
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1564 DS_IS_DEFER_DESTROY(ds_prev)) { |
|
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1565 ASSERT3P(dsda->rm_origin, !=, NULL); |
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1566 } else { |
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1567 ASSERT3P(dsda->rm_origin, ==, NULL); |
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|
1568 } |
| 789 | 1569 } else if (!after_branch_point) { |
| 1570 ds_prev->ds_phys->ds_next_snap_obj = | |
| 1571 ds->ds_phys->ds_next_snap_obj; | |
| 1572 } | |
| 1573 } | |
| 1574 | |
| 1575 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); | |
| 1576 | |
| 1577 if (ds->ds_phys->ds_next_snap_obj != 0) { | |
| 2199 | 1578 blkptr_t bp; |
| 789 | 1579 dsl_dataset_t *ds_next; |
| 1580 uint64_t itor = 0; | |
|
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1581 uint64_t old_unique; |
|
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1582 int64_t used = 0, compressed = 0, uncompressed = 0; |
| 789 | 1583 |
|
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1584 VERIFY(0 == dsl_dataset_hold_obj(dp, |
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|
1585 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next)); |
| 789 | 1586 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj); |
| 1587 | |
|
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1588 old_unique = dsl_dataset_unique(ds_next); |
|
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1589 |
| 789 | 1590 dmu_buf_will_dirty(ds_next->ds_dbuf, tx); |
| 1591 ds_next->ds_phys->ds_prev_snap_obj = | |
| 1592 ds->ds_phys->ds_prev_snap_obj; | |
| 1593 ds_next->ds_phys->ds_prev_snap_txg = | |
| 1594 ds->ds_phys->ds_prev_snap_txg; | |
| 1595 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, | |
| 1596 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0); | |
| 1597 | |
| 1598 /* | |
| 1599 * Transfer to our deadlist (which will become next's | |
| 1600 * new deadlist) any entries from next's current | |
| 1601 * deadlist which were born before prev, and free the | |
| 1602 * other entries. | |
| 1603 * | |
| 1604 * XXX we're doing this long task with the config lock held | |
| 1605 */ | |
|
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1606 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) { |
| 789 | 1607 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) { |
| 1544 | 1608 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, |
| 1609 &bp, tx)); | |
| 789 | 1610 if (ds_prev && !after_branch_point && |
| 1611 bp.blk_birth > | |
| 1612 ds_prev->ds_phys->ds_prev_snap_txg) { | |
| 1613 ds_prev->ds_phys->ds_unique_bytes += | |
| 2082 | 1614 bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1615 } |
| 1616 } else { | |
| 2082 | 1617 used += bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1618 compressed += BP_GET_PSIZE(&bp); |
| 1619 uncompressed += BP_GET_UCSIZE(&bp); | |
| 1620 /* XXX check return value? */ | |
|
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1621 (void) dsl_free(zio, dp, tx->tx_txg, |
| 789 | 1622 &bp, NULL, NULL, ARC_NOWAIT); |
| 1623 } | |
| 1624 } | |
| 1625 | |
|
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1626 ASSERT3U(used, ==, ds->ds_phys->ds_unique_bytes); |
|
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1627 |
|
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1628 /* change snapused */ |
|
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1629 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP, |
|
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1630 -used, -compressed, -uncompressed, tx); |
|
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1631 |
| 789 | 1632 /* free next's deadlist */ |
| 1633 bplist_close(&ds_next->ds_deadlist); | |
| 1634 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx); | |
| 1635 | |
| 1636 /* set next's deadlist to our deadlist */ | |
|
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1637 bplist_close(&ds->ds_deadlist); |
| 789 | 1638 ds_next->ds_phys->ds_deadlist_obj = |
| 1639 ds->ds_phys->ds_deadlist_obj; | |
| 1544 | 1640 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos, |
| 1641 ds_next->ds_phys->ds_deadlist_obj)); | |
| 789 | 1642 ds->ds_phys->ds_deadlist_obj = 0; |
| 1643 | |
| 1644 if (ds_next->ds_phys->ds_next_snap_obj != 0) { | |
| 1645 /* | |
| 1646 * Update next's unique to include blocks which | |
| 1647 * were previously shared by only this snapshot | |
| 1648 * and it. Those blocks will be born after the | |
| 1649 * prev snap and before this snap, and will have | |
| 1650 * died after the next snap and before the one | |
| 1651 * after that (ie. be on the snap after next's | |
| 1652 * deadlist). | |
| 1653 * | |
| 1654 * XXX we're doing this long task with the | |
| 1655 * config lock held | |
| 1656 */ | |
| 1657 dsl_dataset_t *ds_after_next; | |
|
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|
1658 uint64_t space; |
| 789 | 1659 |
|
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|
1660 VERIFY(0 == dsl_dataset_hold_obj(dp, |
|
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1661 ds_next->ds_phys->ds_next_snap_obj, |
|
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|
1662 FTAG, &ds_after_next)); |
|
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1663 |
|
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1664 VERIFY(0 == |
|
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1665 bplist_space_birthrange(&ds_after_next->ds_deadlist, |
|
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1666 ds->ds_phys->ds_prev_snap_txg, |
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1667 ds->ds_phys->ds_creation_txg, &space)); |
|
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1668 ds_next->ds_phys->ds_unique_bytes += space; |
| 789 | 1669 |
|
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|
1670 dsl_dataset_rele(ds_after_next, FTAG); |
| 789 | 1671 ASSERT3P(ds_next->ds_prev, ==, NULL); |
| 1672 } else { | |
| 1673 ASSERT3P(ds_next->ds_prev, ==, ds); | |
|
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|
1674 dsl_dataset_drop_ref(ds_next->ds_prev, ds_next); |
|
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|
1675 ds_next->ds_prev = NULL; |
| 789 | 1676 if (ds_prev) { |
|
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|
1677 VERIFY(0 == dsl_dataset_get_ref(dp, |
|
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|
1678 ds->ds_phys->ds_prev_snap_obj, |
|
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1679 ds_next, &ds_next->ds_prev)); |
| 789 | 1680 } |
|
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1681 |
|
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1682 dsl_dataset_recalc_head_uniq(ds_next); |
|
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1683 |
|
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|
1684 /* |
|
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1685 * Reduce the amount of our unconsmed refreservation |
|
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1686 * being charged to our parent by the amount of |
|
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1687 * new unique data we have gained. |
|
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|
1688 */ |
|
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1689 if (old_unique < ds_next->ds_reserved) { |
|
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1690 int64_t mrsdelta; |
|
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|
1691 uint64_t new_unique = |
|
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1692 ds_next->ds_phys->ds_unique_bytes; |
|
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|
1693 |
|
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1694 ASSERT(old_unique <= new_unique); |
|
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|
1695 mrsdelta = MIN(new_unique - old_unique, |
|
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1696 ds_next->ds_reserved - old_unique); |
|
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1697 dsl_dir_diduse_space(ds->ds_dir, |
|
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1698 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx); |
|
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1699 } |
| 789 | 1700 } |
|
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|
1701 dsl_dataset_rele(ds_next, FTAG); |
| 789 | 1702 } else { |
| 1703 /* | |
| 1704 * There's no next snapshot, so this is a head dataset. | |
| 1705 * Destroy the deadlist. Unless it's a clone, the | |
| 1706 * deadlist should be empty. (If it's a clone, it's | |
| 1707 * safe to ignore the deadlist contents.) | |
| 1708 */ | |
| 1709 struct killarg ka; | |
| 1710 | |
| 1711 ASSERT(after_branch_point || bplist_empty(&ds->ds_deadlist)); | |
| 1712 bplist_close(&ds->ds_deadlist); | |
| 1713 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1714 ds->ds_phys->ds_deadlist_obj = 0; | |
| 1715 | |
| 1716 /* | |
| 1717 * Free everything that we point to (that's born after | |
| 1718 * the previous snapshot, if we are a clone) | |
| 1719 * | |
|
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1720 * NB: this should be very quick, because we already |
|
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1721 * freed all the objects in open context. |
| 789 | 1722 */ |
|
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|
1723 ka.ds = ds; |
| 789 | 1724 ka.zio = zio; |
| 1725 ka.tx = tx; | |
|
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6333409 traversal code should be able to issue multiple reads in parallel
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|
1726 err = traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg, |
|
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|
1727 TRAVERSE_POST, kill_blkptr, &ka); |
| 789 | 1728 ASSERT3U(err, ==, 0); |
|
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6826861 assertion failed in dsl_dataset_destroy_sync when "zfs destroy" old fs
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|
1729 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) || |
|
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1730 ds->ds_phys->ds_unique_bytes == 0); |
|
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1731 |
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|
1732 if (ds->ds_prev != NULL) { |
|
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1733 dsl_dataset_rele(ds->ds_prev, ds); |
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1734 ds->ds_prev = ds_prev = NULL; |
|
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|
1735 } |
| 789 | 1736 } |
| 1737 | |
| 1738 err = zio_wait(zio); | |
| 1739 ASSERT3U(err, ==, 0); | |
| 1740 | |
|
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|
1741 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == ds->ds_object) { |
|
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|
1742 /* Erase the link in the dir */ |
|
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|
1743 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx); |
|
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|
1744 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0; |
|
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|
1745 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0); |
| 789 | 1746 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx); |
| 1747 ASSERT(err == 0); | |
| 1748 } else { | |
| 1749 /* remove from snapshot namespace */ | |
| 1750 dsl_dataset_t *ds_head; | |
|
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|
1751 ASSERT(ds->ds_phys->ds_snapnames_zapobj == 0); |
|
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|
1752 VERIFY(0 == dsl_dataset_hold_obj(dp, |
|
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|
1753 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &ds_head)); |
|
2207
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6439370 assertion failures possible in dsl_dataset_destroy_sync()
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|
1754 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 1755 #ifdef ZFS_DEBUG |
| 1756 { | |
| 1757 uint64_t val; | |
|
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timh
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|
1758 |
|
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|
1759 err = dsl_dataset_snap_lookup(ds_head, |
|
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|
1760 ds->ds_snapname, &val); |
| 789 | 1761 ASSERT3U(err, ==, 0); |
| 1762 ASSERT3U(val, ==, obj); | |
| 1763 } | |
| 1764 #endif | |
|
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|
1765 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx); |
| 789 | 1766 ASSERT(err == 0); |
|
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|
1767 dsl_dataset_rele(ds_head, FTAG); |
| 789 | 1768 } |
| 1769 | |
| 1770 if (ds_prev && ds->ds_prev != ds_prev) | |
|
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|
1771 dsl_dataset_rele(ds_prev, FTAG); |
| 789 | 1772 |
| 5094 | 1773 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx); |
| 4543 | 1774 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx, |
| 1775 cr, "dataset = %llu", ds->ds_object); | |
| 1776 | |
|
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|
1777 if (ds->ds_phys->ds_next_clones_obj != 0) { |
|
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|
1778 uint64_t count; |
|
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|
1779 ASSERT(0 == zap_count(mos, |
|
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|
1780 ds->ds_phys->ds_next_clones_obj, &count) && count == 0); |
|
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|
1781 VERIFY(0 == dmu_object_free(mos, |
|
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diff
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|
1782 ds->ds_phys->ds_next_clones_obj, tx)); |
|
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|
1783 } |
|
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|
1784 if (ds->ds_phys->ds_props_obj != 0) |
|
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|
1785 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_props_obj, tx)); |
|
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|
1786 if (ds->ds_phys->ds_userrefs_obj != 0) |
|
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|
1787 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_userrefs_obj, tx)); |
|
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|
1788 dsl_dir_close(ds->ds_dir, ds); |
|
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|
1789 ds->ds_dir = NULL; |
|
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|
1790 dsl_dataset_drain_refs(ds, tag); |
| 2199 | 1791 VERIFY(0 == dmu_object_free(mos, obj, tx)); |
|
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|
1792 |
|
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|
1793 if (dsda->rm_origin) { |
|
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|
1794 /* |
|
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|
1795 * Remove the origin of the clone we just destroyed. |
|
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|
1796 */ |
|
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|
1797 struct dsl_ds_destroyarg ndsda = {0}; |
|
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|
1798 |
|
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|
1799 ndsda.ds = dsda->rm_origin; |
|
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1800 dsl_dataset_destroy_sync(&ndsda, tag, cr, tx); |
|
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1801 } |
| 2199 | 1802 } |
| 1803 | |
|
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|
1804 static int |
|
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|
1805 dsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, dmu_tx_t *tx) |
|
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|
1806 { |
|
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PSARC 2007/555 zfs fs-only quotas and reservations
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|
1807 uint64_t asize; |
|
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PSARC 2007/555 zfs fs-only quotas and reservations
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|
1808 |
|
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|
1809 if (!dmu_tx_is_syncing(tx)) |
|
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|
1810 return (0); |
|
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|
1811 |
|
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|
1812 /* |
|
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|
1813 * If there's an fs-only reservation, any blocks that might become |
|
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|
1814 * owned by the snapshot dataset must be accommodated by space |
|
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|
1815 * outside of the reservation. |
|
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|
1816 */ |
|
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|
1817 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved); |
|
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|
1818 if (asize > dsl_dir_space_available(ds->ds_dir, NULL, 0, FALSE)) |
|
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|
1819 return (ENOSPC); |
|
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|
1820 |
|
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|
1821 /* |
|
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|
1822 * Propogate any reserved space for this snapshot to other |
|
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|
1823 * snapshot checks in this sync group. |
|
111aa1baa84a
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|
1824 */ |
|
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|
1825 if (asize > 0) |
|
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|
1826 dsl_dir_willuse_space(ds->ds_dir, asize, tx); |
|
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|
1827 |
|
111aa1baa84a
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|
1828 return (0); |
|
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|
1829 } |
|
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|
1830 |
| 2199 | 1831 /* ARGSUSED */ |
| 1832 int | |
| 1833 dsl_dataset_snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 1834 { | |
| 5367 | 1835 dsl_dataset_t *ds = arg1; |
| 2199 | 1836 const char *snapname = arg2; |
| 1837 int err; | |
| 1838 uint64_t value; | |
| 789 | 1839 |
| 1840 /* | |
| 2199 | 1841 * We don't allow multiple snapshots of the same txg. If there |
| 1842 * is already one, try again. | |
| 1843 */ | |
| 1844 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg) | |
| 1845 return (EAGAIN); | |
| 1846 | |
| 1847 /* | |
| 1848 * Check for conflicting name snapshot name. | |
| 789 | 1849 */ |
|
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1850 err = dsl_dataset_snap_lookup(ds, snapname, &value); |
| 2199 | 1851 if (err == 0) |
| 1852 return (EEXIST); | |
| 1853 if (err != ENOENT) | |
| 1854 return (err); | |
| 789 | 1855 |
|
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|
1856 /* |
|
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|
1857 * Check that the dataset's name is not too long. Name consists |
|
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|
1858 * of the dataset's length + 1 for the @-sign + snapshot name's length |
|
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|
1859 */ |
|
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|
1860 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN) |
|
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|
1861 return (ENAMETOOLONG); |
|
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|
1862 |
|
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1863 err = dsl_dataset_snapshot_reserve_space(ds, tx); |
|
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|
1864 if (err) |
|
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|
1865 return (err); |
|
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|
1866 |
| 2199 | 1867 ds->ds_trysnap_txg = tx->tx_txg; |
| 789 | 1868 return (0); |
| 1869 } | |
| 1870 | |
| 2199 | 1871 void |
| 4543 | 1872 dsl_dataset_snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1873 { |
| 5367 | 1874 dsl_dataset_t *ds = arg1; |
| 2199 | 1875 const char *snapname = arg2; |
| 1876 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 789 | 1877 dmu_buf_t *dbuf; |
| 1878 dsl_dataset_phys_t *dsphys; | |
|
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|
1879 uint64_t dsobj, crtxg; |
| 789 | 1880 objset_t *mos = dp->dp_meta_objset; |
| 1881 int err; | |
| 1882 | |
| 2199 | 1883 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 789 | 1884 |
|
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|
1885 /* |
|
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|
1886 * The origin's ds_creation_txg has to be < TXG_INITIAL |
|
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|
1887 */ |
|
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|
1888 if (strcmp(snapname, ORIGIN_DIR_NAME) == 0) |
|
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|
1889 crtxg = 1; |
|
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|
1890 else |
|
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1891 crtxg = tx->tx_txg; |
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1892 |
|
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1893 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
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1894 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 1895 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 1896 dmu_buf_will_dirty(dbuf, tx); |
| 1897 dsphys = dbuf->db_data; | |
|
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1898 bzero(dsphys, sizeof (dsl_dataset_phys_t)); |
| 2199 | 1899 dsphys->ds_dir_obj = ds->ds_dir->dd_object; |
| 789 | 1900 dsphys->ds_fsid_guid = unique_create(); |
| 1901 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 1902 sizeof (dsphys->ds_guid)); | |
| 1903 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj; | |
| 1904 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg; | |
| 1905 dsphys->ds_next_snap_obj = ds->ds_object; | |
| 1906 dsphys->ds_num_children = 1; | |
| 1907 dsphys->ds_creation_time = gethrestime_sec(); | |
|
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1908 dsphys->ds_creation_txg = crtxg; |
| 789 | 1909 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj; |
| 1910 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes; | |
| 1911 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes; | |
| 1912 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes; | |
| 2082 | 1913 dsphys->ds_flags = ds->ds_phys->ds_flags; |
| 789 | 1914 dsphys->ds_bp = ds->ds_phys->ds_bp; |
| 1544 | 1915 dmu_buf_rele(dbuf, FTAG); |
| 789 | 1916 |
| 2199 | 1917 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0); |
| 1918 if (ds->ds_prev) { | |
|
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1919 uint64_t next_clones_obj = |
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1920 ds->ds_prev->ds_phys->ds_next_clones_obj; |
| 2199 | 1921 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj == |
| 789 | 1922 ds->ds_object || |
| 2199 | 1923 ds->ds_prev->ds_phys->ds_num_children > 1); |
| 1924 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { | |
| 1925 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 789 | 1926 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, |
| 2199 | 1927 ds->ds_prev->ds_phys->ds_creation_txg); |
| 1928 ds->ds_prev->ds_phys->ds_next_snap_obj = dsobj; | |
|
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1929 } else if (next_clones_obj != 0) { |
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1930 VERIFY3U(0, ==, zap_remove_int(mos, |
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1931 next_clones_obj, dsphys->ds_next_snap_obj, tx)); |
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1932 VERIFY3U(0, ==, zap_add_int(mos, |
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1933 next_clones_obj, dsobj, tx)); |
| 789 | 1934 } |
| 1935 } | |
| 1936 | |
|
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1937 /* |
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1938 * If we have a reference-reservation on this dataset, we will |
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1939 * need to increase the amount of refreservation being charged |
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1940 * since our unique space is going to zero. |
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1941 */ |
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1942 if (ds->ds_reserved) { |
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1943 int64_t add = MIN(dsl_dataset_unique(ds), ds->ds_reserved); |
|
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1944 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, |
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1945 add, 0, 0, tx); |
|
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1946 } |
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1947 |
| 789 | 1948 bplist_close(&ds->ds_deadlist); |
| 1949 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
|
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1950 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg); |
| 789 | 1951 ds->ds_phys->ds_prev_snap_obj = dsobj; |
|
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1952 ds->ds_phys->ds_prev_snap_txg = crtxg; |
| 789 | 1953 ds->ds_phys->ds_unique_bytes = 0; |
|
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1954 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE) |
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1955 ds->ds_phys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE; |
| 789 | 1956 ds->ds_phys->ds_deadlist_obj = |
| 1957 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1958 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1959 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1960 |
| 1961 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj); | |
| 1962 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj, | |
| 1963 snapname, 8, 1, &dsobj, tx); | |
| 1964 ASSERT(err == 0); | |
| 1965 | |
| 1966 if (ds->ds_prev) | |
|
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1967 dsl_dataset_drop_ref(ds->ds_prev, ds); |
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1968 VERIFY(0 == dsl_dataset_get_ref(dp, |
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1969 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev)); |
| 4543 | 1970 |
|
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1971 dsl_pool_ds_snapshotted(ds, tx); |
|
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1972 |
|
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1973 dsl_dir_snap_cmtime_update(ds->ds_dir); |
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1974 |
| 4543 | 1975 spa_history_internal_log(LOG_DS_SNAPSHOT, dp->dp_spa, tx, cr, |
|
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1976 "dataset = %llu", dsobj); |
| 789 | 1977 } |
| 1978 | |
| 1979 void | |
|
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1980 dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx) |
| 789 | 1981 { |
| 1982 ASSERT(dmu_tx_is_syncing(tx)); | |
|
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1983 ASSERT(ds->ds_objset != NULL); |
| 789 | 1984 ASSERT(ds->ds_phys->ds_next_snap_obj == 0); |
| 1985 | |
| 4787 | 1986 /* |
| 1987 * in case we had to change ds_fsid_guid when we opened it, | |
| 1988 * sync it out now. | |
| 1989 */ | |
| 1990 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1991 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid; | |
| 1992 | |
| 789 | 1993 dsl_dir_dirty(ds->ds_dir, tx); |
|
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1994 dmu_objset_sync(ds->ds_objset, zio, tx); |
| 789 | 1995 } |
| 1996 | |
| 1997 void | |
| 2885 | 1998 dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv) |
| 789 | 1999 { |
|
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2000 uint64_t refd, avail, uobjs, aobjs; |
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2001 |
| 2885 | 2002 dsl_dir_stats(ds->ds_dir, nv); |
| 789 | 2003 |
|
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2004 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs); |
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2005 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_AVAILABLE, avail); |
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2006 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFERENCED, refd); |
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2007 |
| 2885 | 2008 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION, |
| 2009 ds->ds_phys->ds_creation_time); | |
| 2010 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG, | |
| 2011 ds->ds_phys->ds_creation_txg); | |
|
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2012 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA, |
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2013 ds->ds_quota); |
|
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2014 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION, |
|
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2015 ds->ds_reserved); |
|
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|
2016 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_GUID, |
|
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2017 ds->ds_phys->ds_guid); |
|
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2018 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERREFS, ds->ds_userrefs); |
|
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2019 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_DEFER_DESTROY, |
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2020 DS_IS_DEFER_DESTROY(ds) ? 1 : 0); |
| 789 | 2021 |
| 2022 if (ds->ds_phys->ds_next_snap_obj) { | |
| 2023 /* | |
| 2024 * This is a snapshot; override the dd's space used with | |
| 2885 | 2025 * our unique space and compression ratio. |
| 789 | 2026 */ |
| 2885 | 2027 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED, |
| 2028 ds->ds_phys->ds_unique_bytes); | |
| 2029 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO, | |
| 2030 ds->ds_phys->ds_compressed_bytes == 0 ? 100 : | |
| 2031 (ds->ds_phys->ds_uncompressed_bytes * 100 / | |
| 2032 ds->ds_phys->ds_compressed_bytes)); | |
| 789 | 2033 } |
| 2034 } | |
| 2035 | |
| 2885 | 2036 void |
| 2037 dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat) | |
| 789 | 2038 { |
| 2885 | 2039 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg; |
| 2040 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT; | |
| 5367 | 2041 stat->dds_guid = ds->ds_phys->ds_guid; |
| 2885 | 2042 if (ds->ds_phys->ds_next_snap_obj) { |
| 2043 stat->dds_is_snapshot = B_TRUE; | |
| 2044 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1; | |
|
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2045 } else { |
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2046 stat->dds_is_snapshot = B_FALSE; |
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2047 stat->dds_num_clones = 0; |
| 2885 | 2048 } |
| 2049 | |
| 2050 /* clone origin is really a dsl_dir thing... */ | |
| 5446 | 2051 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); |
|
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2052 if (dsl_dir_is_clone(ds->ds_dir)) { |
| 2885 | 2053 dsl_dataset_t *ods; |
| 2054 | |
|
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2055 VERIFY(0 == dsl_dataset_get_ref(ds->ds_dir->dd_pool, |
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2056 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods)); |
| 5367 | 2057 dsl_dataset_name(ods, stat->dds_origin); |
|
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2058 dsl_dataset_drop_ref(ods, FTAG); |
|
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2059 } else { |
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2060 stat->dds_origin[0] = '\0'; |
| 2885 | 2061 } |
| 5446 | 2062 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); |
| 2885 | 2063 } |
| 2064 | |
| 2065 uint64_t | |
| 2066 dsl_dataset_fsid_guid(dsl_dataset_t *ds) | |
| 2067 { | |
| 4787 | 2068 return (ds->ds_fsid_guid); |
| 2885 | 2069 } |
| 2070 | |
| 2071 void | |
| 2072 dsl_dataset_space(dsl_dataset_t *ds, | |
| 2073 uint64_t *refdbytesp, uint64_t *availbytesp, | |
| 2074 uint64_t *usedobjsp, uint64_t *availobjsp) | |
| 2075 { | |
| 2076 *refdbytesp = ds->ds_phys->ds_used_bytes; | |
| 2077 *availbytesp = dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE); | |
|
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2078 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes) |
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2079 *availbytesp += ds->ds_reserved - ds->ds_phys->ds_unique_bytes; |
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2080 if (ds->ds_quota != 0) { |
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2081 /* |
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2082 * Adjust available bytes according to refquota |
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2083 */ |
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2084 if (*refdbytesp < ds->ds_quota) |
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2085 *availbytesp = MIN(*availbytesp, |
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2086 ds->ds_quota - *refdbytesp); |
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2087 else |
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2088 *availbytesp = 0; |
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2089 } |
| 2885 | 2090 *usedobjsp = ds->ds_phys->ds_bp.blk_fill; |
| 2091 *availobjsp = DN_MAX_OBJECT - *usedobjsp; | |
| 789 | 2092 } |
| 2093 | |
|
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2094 boolean_t |
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2095 dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds) |
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2096 { |
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2097 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
|
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2098 |
|
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2099 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || |
|
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2100 dsl_pool_sync_context(dp)); |
|
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2101 if (ds->ds_prev == NULL) |
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2102 return (B_FALSE); |
|
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2103 if (ds->ds_phys->ds_bp.blk_birth > |
|
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2104 ds->ds_prev->ds_phys->ds_creation_txg) |
|
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|
2105 return (B_TRUE); |
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2106 return (B_FALSE); |
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2107 } |
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2108 |
| 2199 | 2109 /* ARGSUSED */ |
| 789 | 2110 static int |
| 2199 | 2111 dsl_dataset_snapshot_rename_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 789 | 2112 { |
| 2199 | 2113 dsl_dataset_t *ds = arg1; |
| 2114 char *newsnapname = arg2; | |
| 2115 dsl_dir_t *dd = ds->ds_dir; | |
| 2116 dsl_dataset_t *hds; | |
| 2117 uint64_t val; | |
| 789 | 2118 int err; |
| 2119 | |
|
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2120 err = dsl_dataset_hold_obj(dd->dd_pool, |
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|
2121 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds); |
| 789 | 2122 if (err) |
| 2123 return (err); | |
| 2124 | |
| 2199 | 2125 /* new name better not be in use */ |
|
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2126 err = dsl_dataset_snap_lookup(hds, newsnapname, &val); |
|
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|
2127 dsl_dataset_rele(hds, FTAG); |
| 789 | 2128 |
| 2199 | 2129 if (err == 0) |
| 2130 err = EEXIST; | |
| 2131 else if (err == ENOENT) | |
| 2132 err = 0; | |
| 4007 | 2133 |
| 2134 /* dataset name + 1 for the "@" + the new snapshot name must fit */ | |
| 2135 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN) | |
| 2136 err = ENAMETOOLONG; | |
| 2137 | |
| 2199 | 2138 return (err); |
| 2139 } | |
| 789 | 2140 |
| 2199 | 2141 static void |
| 4543 | 2142 dsl_dataset_snapshot_rename_sync(void *arg1, void *arg2, |
| 2143 cred_t *cr, dmu_tx_t *tx) | |
| 2199 | 2144 { |
| 2145 dsl_dataset_t *ds = arg1; | |
| 4543 | 2146 const char *newsnapname = arg2; |
| 2199 | 2147 dsl_dir_t *dd = ds->ds_dir; |
| 2148 objset_t *mos = dd->dd_pool->dp_meta_objset; | |
| 2149 dsl_dataset_t *hds; | |
| 2150 int err; | |
| 789 | 2151 |
| 2199 | 2152 ASSERT(ds->ds_phys->ds_next_snap_obj != 0); |
| 789 | 2153 |
|
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2154 VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, |
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2155 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds)); |
| 789 | 2156 |
| 2199 | 2157 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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|
2158 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx); |
| 789 | 2159 ASSERT3U(err, ==, 0); |
| 2199 | 2160 mutex_enter(&ds->ds_lock); |
| 2161 (void) strcpy(ds->ds_snapname, newsnapname); | |
| 2162 mutex_exit(&ds->ds_lock); | |
| 2163 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj, | |
| 2164 ds->ds_snapname, 8, 1, &ds->ds_object, tx); | |
| 789 | 2165 ASSERT3U(err, ==, 0); |
| 2166 | |
| 4543 | 2167 spa_history_internal_log(LOG_DS_RENAME, dd->dd_pool->dp_spa, tx, |
| 2168 cr, "dataset = %llu", ds->ds_object); | |
|
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2169 dsl_dataset_rele(hds, FTAG); |
| 789 | 2170 } |
| 2171 | |
|
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2172 struct renamesnaparg { |
| 4007 | 2173 dsl_sync_task_group_t *dstg; |
| 2174 char failed[MAXPATHLEN]; | |
| 2175 char *oldsnap; | |
| 2176 char *newsnap; | |
| 2177 }; | |
| 2178 | |
| 2179 static int | |
| 2180 dsl_snapshot_rename_one(char *name, void *arg) | |
| 2181 { | |
|
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2182 struct renamesnaparg *ra = arg; |
| 4007 | 2183 dsl_dataset_t *ds = NULL; |
| 2184 char *cp; | |
| 2185 int err; | |
| 2186 | |
| 2187 cp = name + strlen(name); | |
| 2188 *cp = '@'; | |
| 2189 (void) strcpy(cp + 1, ra->oldsnap); | |
| 4543 | 2190 |
| 2191 /* | |
| 2192 * For recursive snapshot renames the parent won't be changing | |
| 2193 * so we just pass name for both the to/from argument. | |
| 2194 */ | |
|
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2195 err = zfs_secpolicy_rename_perms(name, name, CRED()); |
|
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2196 if (err == ENOENT) { |
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2197 return (0); |
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|
2198 } else if (err) { |
| 4543 | 2199 (void) strcpy(ra->failed, name); |
| 2200 return (err); | |
| 2201 } | |
| 2202 | |
|
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|
2203 #ifdef _KERNEL |
|
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2204 /* |
|
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2205 * For all filesystems undergoing rename, we'll need to unmount it. |
|
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|
2206 */ |
|
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|
2207 (void) zfs_unmount_snap(name, NULL); |
|
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|
2208 #endif |
|
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|
2209 err = dsl_dataset_hold(name, ra->dstg, &ds); |
|
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|
2210 *cp = '\0'; |
| 4007 | 2211 if (err == ENOENT) { |
| 2212 return (0); | |
|
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|
2213 } else if (err) { |
| 4007 | 2214 (void) strcpy(ra->failed, name); |
| 2215 return (err); | |
| 2216 } | |
| 2217 | |
| 2218 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check, | |
| 2219 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0); | |
| 2220 | |
| 2221 return (0); | |
| 2222 } | |
| 2223 | |
| 2224 static int | |
| 2225 dsl_recursive_rename(char *oldname, const char *newname) | |
| 2226 { | |
| 2227 int err; | |
|
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2228 struct renamesnaparg *ra; |
| 4007 | 2229 dsl_sync_task_t *dst; |
| 2230 spa_t *spa; | |
| 2231 char *cp, *fsname = spa_strdup(oldname); | |
| 2232 int len = strlen(oldname); | |
| 2233 | |
| 2234 /* truncate the snapshot name to get the fsname */ | |
| 2235 cp = strchr(fsname, '@'); | |
| 2236 *cp = '\0'; | |
| 2237 | |
|
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|
2238 err = spa_open(fsname, &spa, FTAG); |
| 4007 | 2239 if (err) { |
| 2240 kmem_free(fsname, len + 1); | |
| 2241 return (err); | |
| 2242 } | |
|
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2243 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP); |
| 4007 | 2244 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); |
| 2245 | |
| 2246 ra->oldsnap = strchr(oldname, '@') + 1; | |
| 2247 ra->newsnap = strchr(newname, '@') + 1; | |
| 2248 *ra->failed = '\0'; | |
| 2249 | |
| 2250 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra, | |
| 2251 DS_FIND_CHILDREN); | |
| 2252 kmem_free(fsname, len + 1); | |
| 2253 | |
| 2254 if (err == 0) { | |
| 2255 err = dsl_sync_task_group_wait(ra->dstg); | |
| 2256 } | |
| 2257 | |
| 2258 for (dst = list_head(&ra->dstg->dstg_tasks); dst; | |
| 2259 dst = list_next(&ra->dstg->dstg_tasks, dst)) { | |
| 2260 dsl_dataset_t *ds = dst->dst_arg1; | |
| 2261 if (dst->dst_err) { | |
| 2262 dsl_dir_name(ds->ds_dir, ra->failed); | |
|
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2263 (void) strcat(ra->failed, "@"); |
|
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2264 (void) strcat(ra->failed, ra->newsnap); |
| 4007 | 2265 } |
|
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2266 dsl_dataset_rele(ds, ra->dstg); |
| 4007 | 2267 } |
| 2268 | |
| 4543 | 2269 if (err) |
| 2270 (void) strcpy(oldname, ra->failed); | |
| 4007 | 2271 |
| 2272 dsl_sync_task_group_destroy(ra->dstg); | |
|
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2273 kmem_free(ra, sizeof (struct renamesnaparg)); |
| 4007 | 2274 spa_close(spa, FTAG); |
| 2275 return (err); | |
| 2276 } | |
| 2277 | |
|
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2278 static int |
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2279 dsl_valid_rename(char *oldname, void *arg) |
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2280 { |
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2281 int delta = *(int *)arg; |
|
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2282 |
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2283 if (strlen(oldname) + delta >= MAXNAMELEN) |
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2284 return (ENAMETOOLONG); |
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2285 |
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2286 return (0); |
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2287 } |
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2288 |
| 789 | 2289 #pragma weak dmu_objset_rename = dsl_dataset_rename |
| 2290 int | |
|
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2291 dsl_dataset_rename(char *oldname, const char *newname, boolean_t recursive) |
| 789 | 2292 { |
| 2293 dsl_dir_t *dd; | |
| 2199 | 2294 dsl_dataset_t *ds; |
| 789 | 2295 const char *tail; |
| 2296 int err; | |
| 2297 | |
| 2199 | 2298 err = dsl_dir_open(oldname, FTAG, &dd, &tail); |
| 1544 | 2299 if (err) |
| 2300 return (err); | |
|
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2301 /* |
|
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2302 * If there are more than 2 references there may be holds |
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2303 * hanging around that haven't been cleared out yet. |
|
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2304 */ |
|
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2305 if (dmu_buf_refcount(dd->dd_dbuf) > 2) |
|
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2306 txg_wait_synced(dd->dd_pool, 0); |
| 789 | 2307 if (tail == NULL) { |
|
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2308 int delta = strlen(newname) - strlen(oldname); |
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2309 |
|
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2310 /* if we're growing, validate child name lengths */ |
|
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2311 if (delta > 0) |
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2312 err = dmu_objset_find(oldname, dsl_valid_rename, |
|
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2313 &delta, DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); |
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2314 |
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2315 if (!err) |
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|
2316 err = dsl_dir_rename(dd, newname); |
| 789 | 2317 dsl_dir_close(dd, FTAG); |
| 2318 return (err); | |
| 2319 } | |
| 2320 if (tail[0] != '@') { | |
| 2321 /* the name ended in a nonexistant component */ | |
| 2322 dsl_dir_close(dd, FTAG); | |
| 2323 return (ENOENT); | |
| 2324 } | |
| 2325 | |
| 2199 | 2326 dsl_dir_close(dd, FTAG); |
| 2327 | |
| 2328 /* new name must be snapshot in same filesystem */ | |
| 2329 tail = strchr(newname, '@'); | |
| 2330 if (tail == NULL) | |
| 2331 return (EINVAL); | |
| 2332 tail++; | |
| 2333 if (strncmp(oldname, newname, tail - newname) != 0) | |
| 2334 return (EXDEV); | |
| 789 | 2335 |
| 4007 | 2336 if (recursive) { |
| 2337 err = dsl_recursive_rename(oldname, newname); | |
| 2338 } else { | |
|
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2339 err = dsl_dataset_hold(oldname, FTAG, &ds); |
| 4007 | 2340 if (err) |
| 2341 return (err); | |
| 2199 | 2342 |
| 4007 | 2343 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 2344 dsl_dataset_snapshot_rename_check, | |
| 2345 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1); | |
| 2199 | 2346 |
|
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|
2347 dsl_dataset_rele(ds, FTAG); |
| 4007 | 2348 } |
| 2199 | 2349 |
| 789 | 2350 return (err); |
| 2351 } | |
| 2082 | 2352 |
|
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2353 struct promotenode { |
|
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|
2354 list_node_t link; |
|
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|
2355 dsl_dataset_t *ds; |
|
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|
2356 }; |
|
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2357 |
| 2199 | 2358 struct promotearg { |
|
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2359 list_t shared_snaps, origin_snaps, clone_snaps; |
|
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2360 dsl_dataset_t *origin_origin, *origin_head; |
|
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2361 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap; |
| 2199 | 2362 }; |
| 2363 | |
|
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2364 static int snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep); |
|
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|
2365 |
| 4543 | 2366 /* ARGSUSED */ |
| 2082 | 2367 static int |
| 2199 | 2368 dsl_dataset_promote_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 2082 | 2369 { |
| 2199 | 2370 dsl_dataset_t *hds = arg1; |
| 2371 struct promotearg *pa = arg2; | |
|
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2372 struct promotenode *snap = list_head(&pa->shared_snaps); |
|
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|
2373 dsl_dataset_t *origin_ds = snap->ds; |
|
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|
2374 int err; |
| 2199 | 2375 |
|
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|
2376 /* Check that it is a real clone */ |
|
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|
2377 if (!dsl_dir_is_clone(hds->ds_dir)) |
| 2082 | 2378 return (EINVAL); |
| 2379 | |
| 2199 | 2380 /* Since this is so expensive, don't do the preliminary check */ |
| 2381 if (!dmu_tx_is_syncing(tx)) | |
| 2382 return (0); | |
| 2383 | |
|
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|
2384 if (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE) |
|
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|
2385 return (EXDEV); |
| 2082 | 2386 |
| 5367 | 2387 /* compute origin's new unique space */ |
|
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2388 snap = list_tail(&pa->clone_snaps); |
|
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|
2389 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object); |
|
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2390 err = bplist_space_birthrange(&snap->ds->ds_deadlist, |
|
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2391 origin_ds->ds_phys->ds_prev_snap_txg, UINT64_MAX, &pa->unique); |
|
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|
2392 if (err) |
|
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|
2393 return (err); |
|
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|
2394 |
|
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|
2395 /* |
|
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|
2396 * Walk the snapshots that we are moving |
|
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|
2397 * |
|
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|
2398 * Compute space to transfer. Consider the incremental changes |
|
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|
2399 * to used for each snapshot: |
|
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2400 * (my used) = (prev's used) + (blocks born) - (blocks killed) |
|
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|
2401 * So each snapshot gave birth to: |
|
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2402 * (blocks born) = (my used) - (prev's used) + (blocks killed) |
|
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|
2403 * So a sequence would look like: |
|
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2404 * (uN - u(N-1) + kN) + ... + (u1 - u0 + k1) + (u0 - 0 + k0) |
|
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|
2405 * Which simplifies to: |
|
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|
2406 * uN + kN + kN-1 + ... + k1 + k0 |
|
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|
2407 * Note however, if we stop before we reach the ORIGIN we get: |
|
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|
2408 * uN + kN + kN-1 + ... + kM - uM-1 |
|
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|
2409 */ |
|
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|
2410 pa->used = origin_ds->ds_phys->ds_used_bytes; |
|
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|
2411 pa->comp = origin_ds->ds_phys->ds_compressed_bytes; |
|
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|
2412 pa->uncomp = origin_ds->ds_phys->ds_uncompressed_bytes; |
|
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|
2413 for (snap = list_head(&pa->shared_snaps); snap; |
|
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|
2414 snap = list_next(&pa->shared_snaps, snap)) { |
| 2082 | 2415 uint64_t val, dlused, dlcomp, dluncomp; |
|
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|
2416 dsl_dataset_t *ds = snap->ds; |
| 2082 | 2417 |
| 2418 /* Check that the snapshot name does not conflict */ | |
|
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|
2419 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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|
2420 err = dsl_dataset_snap_lookup(hds, ds->ds_snapname, &val); |
|
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|
2421 if (err == 0) |
|
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|
2422 return (EEXIST); |
|
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|
2423 if (err != ENOENT) |
|
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|
2424 return (err); |
|
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|
2425 |
|
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|
2426 /* The very first snapshot does not have a deadlist */ |
|
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|
2427 if (ds->ds_phys->ds_prev_snap_obj == 0) |
|
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|
2428 continue; |
|
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|
2429 |
|
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|
2430 if (err = bplist_space(&ds->ds_deadlist, |
|
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|
2431 &dlused, &dlcomp, &dluncomp)) |
|
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|
2432 return (err); |
|
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|
2433 pa->used += dlused; |
|
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|
2434 pa->comp += dlcomp; |
|
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|
2435 pa->uncomp += dluncomp; |
|
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|
2436 } |
|
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|
2437 |
|
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|
2438 /* |
|
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|
2439 * If we are a clone of a clone then we never reached ORIGIN, |
|
47572a2f5e73
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|
2440 * so we need to subtract out the clone origin's used space. |
|
47572a2f5e73
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|
2441 */ |
|
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|
2442 if (pa->origin_origin) { |
|
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|
2443 pa->used -= pa->origin_origin->ds_phys->ds_used_bytes; |
|
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|
2444 pa->comp -= pa->origin_origin->ds_phys->ds_compressed_bytes; |
|
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|
2445 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes; |
| 2082 | 2446 } |
| 2447 | |
| 2448 /* Check that there is enough space here */ | |
|
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|
2449 err = dsl_dir_transfer_possible(origin_ds->ds_dir, hds->ds_dir, |
|
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|
2450 pa->used); |
|
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|
2451 if (err) |
|
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|
2452 return (err); |
|
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|
2453 |
|
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|
2454 /* |
|
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|
2455 * Compute the amounts of space that will be used by snapshots |
|
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|
2456 * after the promotion (for both origin and clone). For each, |
|
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|
2457 * it is the amount of space that will be on all of their |
|
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|
2458 * deadlists (that was not born before their new origin). |
|
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|
2459 */ |
|
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|
2460 if (hds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) { |
|
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|
2461 uint64_t space; |
|
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|
2462 |
|
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|
2463 /* |
|
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|
2464 * Note, typically this will not be a clone of a clone, |
|
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|
2465 * so snap->ds->ds_origin_txg will be < TXG_INITIAL, so |
|
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|
2466 * these snaplist_space() -> bplist_space_birthrange() |
|
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|
2467 * calls will be fast because they do not have to |
|
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|
2468 * iterate over all bps. |
|
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|
2469 */ |
|
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|
2470 snap = list_head(&pa->origin_snaps); |
|
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changeset
|
2471 err = snaplist_space(&pa->shared_snaps, |
|
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|
2472 snap->ds->ds_origin_txg, &pa->cloneusedsnap); |
|
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|
2473 if (err) |
|
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|
2474 return (err); |
|
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|
2475 |
|
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diff
changeset
|
2476 err = snaplist_space(&pa->clone_snaps, |
|
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|
2477 snap->ds->ds_origin_txg, &space); |
|
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|
2478 if (err) |
|
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|
2479 return (err); |
|
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|
2480 pa->cloneusedsnap += space; |
|
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|
2481 } |
|
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|
2482 if (origin_ds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) { |
|
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|
2483 err = snaplist_space(&pa->origin_snaps, |
|
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|
2484 origin_ds->ds_phys->ds_creation_txg, &pa->originusedsnap); |
|
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|
2485 if (err) |
|
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|
2486 return (err); |
|
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|
2487 } |
|
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|
2488 |
|
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|
2489 return (0); |
| 2199 | 2490 } |
| 2082 | 2491 |
| 2199 | 2492 static void |
| 4543 | 2493 dsl_dataset_promote_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 2494 { |
| 2495 dsl_dataset_t *hds = arg1; | |
| 2496 struct promotearg *pa = arg2; | |
|
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|
2497 struct promotenode *snap = list_head(&pa->shared_snaps); |
|
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|
2498 dsl_dataset_t *origin_ds = snap->ds; |
|
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|
2499 dsl_dataset_t *origin_head; |
| 2199 | 2500 dsl_dir_t *dd = hds->ds_dir; |
| 2501 dsl_pool_t *dp = hds->ds_dir->dd_pool; | |
| 5367 | 2502 dsl_dir_t *odd = NULL; |
|
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|
2503 uint64_t oldnext_obj; |
|
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|
2504 int64_t delta; |
| 2199 | 2505 |
| 2506 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE)); | |
| 2507 | |
|
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2508 snap = list_head(&pa->origin_snaps); |
|
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|
2509 origin_head = snap->ds; |
|
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|
2510 |
| 2417 | 2511 /* |
| 5367 | 2512 * We need to explicitly open odd, since origin_ds's dd will be |
| 2417 | 2513 * changing. |
| 2514 */ | |
| 5367 | 2515 VERIFY(0 == dsl_dir_open_obj(dp, origin_ds->ds_dir->dd_object, |
| 2516 NULL, FTAG, &odd)); | |
| 2082 | 2517 |
|
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|
2518 /* change origin's next snap */ |
|
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|
2519 dmu_buf_will_dirty(origin_ds->ds_dbuf, tx); |
|
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|
2520 oldnext_obj = origin_ds->ds_phys->ds_next_snap_obj; |
|
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|
2521 snap = list_tail(&pa->clone_snaps); |
|
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2522 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object); |
|
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|
2523 origin_ds->ds_phys->ds_next_snap_obj = snap->ds->ds_object; |
|
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|
2524 |
|
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|
2525 /* change the origin's next clone */ |
|
361307ae060d
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|
2526 if (origin_ds->ds_phys->ds_next_clones_obj) { |
|
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|
2527 VERIFY3U(0, ==, zap_remove_int(dp->dp_meta_objset, |
|
361307ae060d
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|
2528 origin_ds->ds_phys->ds_next_clones_obj, |
|
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|
2529 origin_ds->ds_phys->ds_next_snap_obj, tx)); |
|
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|
2530 VERIFY3U(0, ==, zap_add_int(dp->dp_meta_objset, |
|
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diff
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|
2531 origin_ds->ds_phys->ds_next_clones_obj, |
|
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changeset
|
2532 oldnext_obj, tx)); |
|
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changeset
|
2533 } |
|
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|
2534 |
|
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|
2535 /* change origin */ |
|
47572a2f5e73
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diff
changeset
|
2536 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
|
47572a2f5e73
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diff
changeset
|
2537 ASSERT3U(dd->dd_phys->dd_origin_obj, ==, origin_ds->ds_object); |
|
47572a2f5e73
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|
2538 dd->dd_phys->dd_origin_obj = odd->dd_phys->dd_origin_obj; |
|
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|
2539 hds->ds_origin_txg = origin_head->ds_origin_txg; |
|
6689
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diff
changeset
|
2540 dmu_buf_will_dirty(odd->dd_dbuf, tx); |
|
47572a2f5e73
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diff
changeset
|
2541 odd->dd_phys->dd_origin_obj = origin_ds->ds_object; |
|
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|
2542 origin_head->ds_origin_txg = origin_ds->ds_phys->ds_creation_txg; |
|
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|
2543 |
| 2082 | 2544 /* move snapshots to this dir */ |
|
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|
2545 for (snap = list_head(&pa->shared_snaps); snap; |
|
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|
2546 snap = list_next(&pa->shared_snaps, snap)) { |
|
6689
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diff
changeset
|
2547 dsl_dataset_t *ds = snap->ds; |
| 2082 | 2548 |
|
7237
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diff
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|
2549 /* unregister props as dsl_dir is changing */ |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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diff
changeset
|
2550 if (ds->ds_objset) { |
|
a0d52501437c
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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10272
diff
changeset
|
2551 dmu_objset_evict(ds->ds_objset); |
|
a0d52501437c
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diff
changeset
|
2552 ds->ds_objset = NULL; |
|
7237
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|
2553 } |
| 2082 | 2554 /* move snap name entry */ |
|
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|
2555 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
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changeset
|
2556 VERIFY(0 == dsl_dataset_snap_remove(origin_head, |
|
6689
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6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
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6643
diff
changeset
|
2557 ds->ds_snapname, tx)); |
| 2199 | 2558 VERIFY(0 == zap_add(dp->dp_meta_objset, |
| 2082 | 2559 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname, |
| 2560 8, 1, &ds->ds_object, tx)); | |
| 2561 /* change containing dsl_dir */ | |
| 2562 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 5367 | 2563 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object); |
| 2082 | 2564 ds->ds_phys->ds_dir_obj = dd->dd_object; |
| 5367 | 2565 ASSERT3P(ds->ds_dir, ==, odd); |
| 2082 | 2566 dsl_dir_close(ds->ds_dir, ds); |
| 2199 | 2567 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object, |
| 2082 | 2568 NULL, ds, &ds->ds_dir)); |
| 2569 | |
| 2570 ASSERT3U(dsl_prop_numcb(ds), ==, 0); | |
|
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|
2571 } |
|
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|
2572 |
|
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|
2573 /* |
|
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|
2574 * Change space accounting. |
|
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diff
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|
2575 * Note, pa->*usedsnap and dd_used_breakdown[SNAP] will either |
|
6d408f0a5fbd
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diff
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|
2576 * both be valid, or both be 0 (resulting in delta == 0). This |
|
6d408f0a5fbd
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diff
changeset
|
2577 * is true for each of {clone,origin} independently. |
|
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|
2578 */ |
|
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|
2579 |
|
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|
2580 delta = pa->cloneusedsnap - |
|
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|
2581 dd->dd_phys->dd_used_breakdown[DD_USED_SNAP]; |
|
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|
2582 ASSERT3S(delta, >=, 0); |
|
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|
2583 ASSERT3U(pa->used, >=, delta); |
|
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|
2584 dsl_dir_diduse_space(dd, DD_USED_SNAP, delta, 0, 0, tx); |
|
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|
2585 dsl_dir_diduse_space(dd, DD_USED_HEAD, |
|
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changeset
|
2586 pa->used - delta, pa->comp, pa->uncomp, tx); |
|
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|
2587 |
|
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|
2588 delta = pa->originusedsnap - |
|
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|
2589 odd->dd_phys->dd_used_breakdown[DD_USED_SNAP]; |
|
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|
2590 ASSERT3S(delta, <=, 0); |
|
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changeset
|
2591 ASSERT3U(pa->used, >=, -delta); |
|
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changeset
|
2592 dsl_dir_diduse_space(odd, DD_USED_SNAP, delta, 0, 0, tx); |
|
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changeset
|
2593 dsl_dir_diduse_space(odd, DD_USED_HEAD, |
|
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changeset
|
2594 -pa->used - delta, -pa->comp, -pa->uncomp, tx); |
|
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|
2595 |
| 5367 | 2596 origin_ds->ds_phys->ds_unique_bytes = pa->unique; |
| 2082 | 2597 |
| 4543 | 2598 /* log history record */ |
| 2599 spa_history_internal_log(LOG_DS_PROMOTE, dd->dd_pool->dp_spa, tx, | |
|
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|
2600 cr, "dataset = %llu", hds->ds_object); |
| 4543 | 2601 |
| 5367 | 2602 dsl_dir_close(odd, FTAG); |
| 2082 | 2603 } |
| 2604 | |
|
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changeset
|
2605 static char *snaplist_tag = "snaplist"; |
|
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|
2606 /* |
|
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changeset
|
2607 * Make a list of dsl_dataset_t's for the snapshots between first_obj |
|
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|
2608 * (exclusive) and last_obj (inclusive). The list will be in reverse |
|
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|
2609 * order (last_obj will be the list_head()). If first_obj == 0, do all |
|
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|
2610 * snapshots back to this dataset's origin. |
|
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|
2611 */ |
|
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|
2612 static int |
|
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changeset
|
2613 snaplist_make(dsl_pool_t *dp, boolean_t own, |
|
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changeset
|
2614 uint64_t first_obj, uint64_t last_obj, list_t *l) |
|
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changeset
|
2615 { |
|
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diff
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|
2616 uint64_t obj = last_obj; |
|
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diff
changeset
|
2617 |
|
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diff
changeset
|
2618 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock)); |
|
6d408f0a5fbd
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diff
changeset
|
2619 |
|
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7385
diff
changeset
|
2620 list_create(l, sizeof (struct promotenode), |
|
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parents:
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diff
changeset
|
2621 offsetof(struct promotenode, link)); |
|
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diff
changeset
|
2622 |
|
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parents:
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diff
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|
2623 while (obj != first_obj) { |
|
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diff
changeset
|
2624 dsl_dataset_t *ds; |
|
6d408f0a5fbd
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diff
changeset
|
2625 struct promotenode *snap; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
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diff
changeset
|
2626 int err; |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2627 |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2628 if (own) { |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2629 err = dsl_dataset_own_obj(dp, obj, |
|
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
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diff
changeset
|
2630 0, snaplist_tag, &ds); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2631 if (err == 0) |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2632 dsl_dataset_make_exclusive(ds, snaplist_tag); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
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diff
changeset
|
2633 } else { |
|
6d408f0a5fbd
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diff
changeset
|
2634 err = dsl_dataset_hold_obj(dp, obj, snaplist_tag, &ds); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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diff
changeset
|
2635 } |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
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diff
changeset
|
2636 if (err == ENOENT) { |
|
6d408f0a5fbd
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7385
diff
changeset
|
2637 /* lost race with snapshot destroy */ |
|
6d408f0a5fbd
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diff
changeset
|
2638 struct promotenode *last = list_tail(l); |
|
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diff
changeset
|
2639 ASSERT(obj != last->ds->ds_phys->ds_prev_snap_obj); |
|
6d408f0a5fbd
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diff
changeset
|
2640 obj = last->ds->ds_phys->ds_prev_snap_obj; |
|
6d408f0a5fbd
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diff
changeset
|
2641 continue; |
|
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|
2642 } else if (err) { |
|
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changeset
|
2643 return (err); |
|
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diff
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|
2644 } |
|
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|
2645 |
|
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diff
changeset
|
2646 if (first_obj == 0) |
|
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diff
changeset
|
2647 first_obj = ds->ds_dir->dd_phys->dd_origin_obj; |
|
6d408f0a5fbd
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diff
changeset
|
2648 |
|
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diff
changeset
|
2649 snap = kmem_alloc(sizeof (struct promotenode), KM_SLEEP); |
|
6d408f0a5fbd
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changeset
|
2650 snap->ds = ds; |
|
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diff
changeset
|
2651 list_insert_tail(l, snap); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2652 obj = ds->ds_phys->ds_prev_snap_obj; |
|
6d408f0a5fbd
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diff
changeset
|
2653 } |
|
6d408f0a5fbd
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diff
changeset
|
2654 |
|
6d408f0a5fbd
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7385
diff
changeset
|
2655 return (0); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2656 } |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2657 |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2658 static int |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2659 snaplist_space(list_t *l, uint64_t mintxg, uint64_t *spacep) |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2660 { |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2661 struct promotenode *snap; |
|
6d408f0a5fbd
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7385
diff
changeset
|
2662 |
|
6d408f0a5fbd
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diff
changeset
|
2663 *spacep = 0; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2664 for (snap = list_head(l); snap; snap = list_next(l, snap)) { |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2665 uint64_t used; |
|
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2666 int err = bplist_space_birthrange(&snap->ds->ds_deadlist, |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2667 mintxg, UINT64_MAX, &used); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2668 if (err) |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2669 return (err); |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2670 *spacep += used; |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2671 } |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2672 return (0); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2673 } |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2674 |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2675 static void |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2676 snaplist_destroy(list_t *l, boolean_t own) |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2677 { |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2678 struct promotenode *snap; |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2679 |
|
8779
f164e0e90508
6784924 panic while ludelete (zfs destroy)
Mark J Musante <Mark.Musante@Sun.COM>
parents:
8746
diff
changeset
|
2680 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
|
2681 return; |
|
6d408f0a5fbd
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parents:
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diff
changeset
|
2682 |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2683 while ((snap = list_tail(l)) != NULL) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2684 list_remove(l, snap); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2685 if (own) |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2686 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
|
2687 else |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2688 dsl_dataset_rele(snap->ds, snaplist_tag); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2689 kmem_free(snap, sizeof (struct promotenode)); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2690 } |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2691 list_destroy(l); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2692 } |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2693 |
|
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parents:
7385
diff
changeset
|
2694 /* |
|
6d408f0a5fbd
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parents:
7385
diff
changeset
|
2695 * Promote a clone. Nomenclature note: |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2696 * "clone" or "cds": the original clone which is being promoted |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2697 * "origin" or "ods": the snapshot which is originally clone's origin |
|
6d408f0a5fbd
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7385
diff
changeset
|
2698 * "origin head" or "ohds": the dataset which is the head |
|
6d408f0a5fbd
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7385
diff
changeset
|
2699 * (filesystem/volume) for the origin |
|
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7385
diff
changeset
|
2700 * "origin origin": the origin of the origin's filesystem (typically |
|
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diff
changeset
|
2701 * NULL, indicating that the clone is not a clone of a clone). |
|
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diff
changeset
|
2702 */ |
| 2082 | 2703 int |
| 2704 dsl_dataset_promote(const char *name) | |
| 2705 { | |
| 2706 dsl_dataset_t *ds; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2707 dsl_dir_t *dd; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2708 dsl_pool_t *dp; |
| 2082 | 2709 dmu_object_info_t doi; |
|
7390
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diff
changeset
|
2710 struct promotearg pa = { 0 }; |
|
7046
361307ae060d
6343667 scrub/resilver has to start over when a snapshot is taken
ahrens
parents:
6992
diff
changeset
|
2711 struct promotenode *snap; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2712 int err; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2713 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2714 err = dsl_dataset_hold(name, FTAG, &ds); |
| 2082 | 2715 if (err) |
| 2716 return (err); | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2717 dd = ds->ds_dir; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2718 dp = dd->dd_pool; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2719 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2720 err = dmu_object_info(dp->dp_meta_objset, |
| 2082 | 2721 ds->ds_phys->ds_snapnames_zapobj, &doi); |
| 2722 if (err) { | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2723 dsl_dataset_rele(ds, FTAG); |
| 2082 | 2724 return (err); |
| 2725 } | |
| 2726 | |
|
7390
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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changeset
|
2727 if (dsl_dataset_is_snapshot(ds) || dd->dd_phys->dd_origin_obj == 0) { |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2728 dsl_dataset_rele(ds, FTAG); |
|
6d408f0a5fbd
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Matthew Ahrens <Matthew.Ahrens@Sun.COM>
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7385
diff
changeset
|
2729 return (EINVAL); |
|
6d408f0a5fbd
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7385
diff
changeset
|
2730 } |
|
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7385
diff
changeset
|
2731 |
| 2082 | 2732 /* |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2733 * 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
|
2734 * 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
|
2735 * 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
|
2736 * namespace. |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2737 */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2738 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
|
2739 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2740 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
|
2741 &pa.shared_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2742 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2743 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2744 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2745 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
|
2746 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2747 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2748 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2749 snap = list_head(&pa.shared_snaps); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2750 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
|
2751 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
|
2752 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
|
2753 if (err != 0) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2754 goto out; |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2755 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2756 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
|
2757 err = dsl_dataset_own_obj(dp, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2758 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
|
2759 0, FTAG, &pa.origin_origin); |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2760 if (err != 0) |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2761 goto out; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2762 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2763 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2764 out: |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2765 rw_exit(&dp->dp_config_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2766 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2767 /* |
| 2082 | 2768 * Add in 128x the snapnames zapobj size, since we will be moving |
| 2769 * a bunch of snapnames to the promoted ds, and dirtying their | |
| 2770 * bonus buffers. | |
| 2771 */ | |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2772 if (err == 0) { |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2773 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
|
2774 dsl_dataset_promote_sync, ds, &pa, |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2775 2 + 2 * doi.doi_physical_blks); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2776 } |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2777 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2778 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
|
2779 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
|
2780 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
|
2781 if (pa.origin_origin) |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2782 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
|
2783 dsl_dataset_rele(ds, FTAG); |
| 2082 | 2784 return (err); |
| 2785 } | |
| 3912 | 2786 |
| 5367 | 2787 struct cloneswaparg { |
| 2788 dsl_dataset_t *cds; /* clone dataset */ | |
| 2789 dsl_dataset_t *ohds; /* origin's head dataset */ | |
| 2790 boolean_t force; | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2791 int64_t unused_refres_delta; /* change in unconsumed refreservation */ |
| 5367 | 2792 }; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2793 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2794 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2795 static int |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2796 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
|
2797 { |
| 5367 | 2798 struct cloneswaparg *csa = arg1; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2799 |
| 5367 | 2800 /* they should both be heads */ |
| 2801 if (dsl_dataset_is_snapshot(csa->cds) || | |
| 2802 dsl_dataset_is_snapshot(csa->ohds)) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2803 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2804 |
| 5367 | 2805 /* the branch point should be just before them */ |
| 2806 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
|
2807 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2808 |
|
10272
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2809 /* 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
|
2810 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
|
2811 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
|
2812 csa->ohds->ds_object != |
|
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2813 csa->cds->ds_prev->ds_phys->ds_next_snap_obj) |
| 5367 | 2814 return (EINVAL); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2815 |
| 5367 | 2816 /* the clone should be a child of the origin */ |
| 2817 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir) | |
| 2818 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2819 |
| 5367 | 2820 /* ohds shouldn't be modified unless 'force' */ |
| 2821 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds)) | |
| 2822 return (ETXTBSY); | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2823 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2824 /* adjust amount of any unconsumed refreservation */ |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2825 csa->unused_refres_delta = |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2826 (int64_t)MIN(csa->ohds->ds_reserved, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2827 csa->ohds->ds_phys->ds_unique_bytes) - |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2828 (int64_t)MIN(csa->ohds->ds_reserved, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2829 csa->cds->ds_phys->ds_unique_bytes); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2830 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2831 if (csa->unused_refres_delta > 0 && |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2832 csa->unused_refres_delta > |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2833 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
|
2834 return (ENOSPC); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2835 |
| 5367 | 2836 return (0); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2837 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2838 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2839 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2840 static void |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2841 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
|
2842 { |
| 5367 | 2843 struct cloneswaparg *csa = arg1; |
| 2844 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
|
2845 |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2846 ASSERT(csa->cds->ds_reserved == 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2847 ASSERT(csa->cds->ds_quota == csa->ohds->ds_quota); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2848 |
| 5367 | 2849 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx); |
| 2850 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
|
2851 |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
2852 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
|
2853 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
|
2854 csa->cds->ds_objset = NULL; |
| 5367 | 2855 } |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2856 |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
2857 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
|
2858 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
|
2859 csa->ohds->ds_objset = NULL; |
| 5367 | 2860 } |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2861 |
|
10272
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2862 /* |
|
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2863 * 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
|
2864 */ |
|
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2865 if (csa->cds->ds_prev) { |
|
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2866 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
|
2867 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
|
2868 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
|
2869 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
|
2870 &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
|
2871 } |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2872 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2873 /* swap blkptrs */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2874 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2875 blkptr_t tmp; |
| 5367 | 2876 tmp = csa->ohds->ds_phys->ds_bp; |
| 2877 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp; | |
| 2878 csa->cds->ds_phys->ds_bp = tmp; | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2879 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2880 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2881 /* set dd_*_bytes */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2882 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2883 int64_t dused, dcomp, duncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2884 uint64_t cdl_used, cdl_comp, cdl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2885 uint64_t odl_used, odl_comp, odl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2886 |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2887 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
|
2888 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
|
2889 |
| 5367 | 2890 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
|
2891 &cdl_comp, &cdl_uncomp)); |
| 5367 | 2892 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
|
2893 &odl_comp, &odl_uncomp)); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2894 |
| 5367 | 2895 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used - |
| 2896 (csa->ohds->ds_phys->ds_used_bytes + odl_used); | |
| 2897 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp - | |
| 2898 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp); | |
| 2899 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes + | |
| 2900 cdl_uncomp - | |
| 2901 (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
|
2902 |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2903 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_HEAD, |
| 5367 | 2904 dused, dcomp, duncomp, tx); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2905 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD, |
| 5367 | 2906 -dused, -dcomp, -duncomp, tx); |
|
7390
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2907 |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2908 /* |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2909 * 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
|
2910 * 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
|
2911 * 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
|
2912 * changing that affects the snapused). |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2913 */ |
|
6d408f0a5fbd
PSARC/2008/518 ZFS space accounting enhancements
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7385
diff
changeset
|
2914 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
|
2915 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
|
2916 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
|
2917 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
|
2918 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
|
2919 DD_USED_HEAD, DD_USED_SNAP, tx); |
| 5367 | 2920 } |
| 2921 | |
| 2922 #define SWITCH64(x, y) \ | |
| 2923 { \ | |
| 2924 uint64_t __tmp = (x); \ | |
| 2925 (x) = (y); \ | |
| 2926 (y) = __tmp; \ | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2927 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2928 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2929 /* swap ds_*_bytes */ |
| 5367 | 2930 SWITCH64(csa->ohds->ds_phys->ds_used_bytes, |
| 2931 csa->cds->ds_phys->ds_used_bytes); | |
| 2932 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes, | |
| 2933 csa->cds->ds_phys->ds_compressed_bytes); | |
| 2934 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes, | |
| 2935 csa->cds->ds_phys->ds_uncompressed_bytes); | |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2936 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2937 csa->cds->ds_phys->ds_unique_bytes); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2938 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
2939 /* 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
|
2940 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
|
2941 csa->unused_refres_delta, 0, 0, tx); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2942 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2943 /* swap deadlists */ |
| 5367 | 2944 bplist_close(&csa->cds->ds_deadlist); |
| 2945 bplist_close(&csa->ohds->ds_deadlist); | |
| 2946 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj, | |
| 2947 csa->cds->ds_phys->ds_deadlist_obj); | |
| 2948 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset, | |
| 2949 csa->cds->ds_phys->ds_deadlist_obj)); | |
| 2950 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset, | |
| 2951 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
|
2952 |
|
001de5627df3
6333409 traversal code should be able to issue multiple reads in parallel
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7754
diff
changeset
|
2953 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
|
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 /* |
|
10272
a0669934e974
6861581 ZFS frees in synching context during rollback
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10268
diff
changeset
|
2957 * 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
|
2958 * 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
|
2959 * 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
|
2960 * 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
|
2961 */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2962 int |
| 5367 | 2963 dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head, |
| 2964 boolean_t force) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2965 { |
| 5367 | 2966 struct cloneswaparg csa; |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2967 int error; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2968 |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2969 ASSERT(clone->ds_owner); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2970 ASSERT(origin_head->ds_owner); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2971 retry: |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2972 /* Need exclusive access for the swap */ |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2973 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
|
2974 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
|
2975 rw_exit(&clone->ds_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2976 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
|
2977 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
|
2978 rw_exit(&origin_head->ds_rwlock); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2979 goto retry; |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2980 } |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2981 } |
| 5367 | 2982 csa.cds = clone; |
| 2983 csa.ohds = origin_head; | |
| 2984 csa.force = force; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2985 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
|
2986 dsl_dataset_clone_swap_check, |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
2987 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
|
2988 return (error); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2989 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2990 |
| 3912 | 2991 /* |
| 2992 * Given a pool name and a dataset object number in that pool, | |
| 2993 * return the name of that dataset. | |
| 2994 */ | |
| 2995 int | |
| 2996 dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf) | |
| 2997 { | |
| 2998 spa_t *spa; | |
| 2999 dsl_pool_t *dp; | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3000 dsl_dataset_t *ds; |
| 3912 | 3001 int error; |
| 3002 | |
| 3003 if ((error = spa_open(pname, &spa, FTAG)) != 0) | |
| 3004 return (error); | |
| 3005 dp = spa_get_dsl(spa); | |
| 3006 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
|
3007 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
|
3008 dsl_dataset_name(ds, buf); |
|
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3009 dsl_dataset_rele(ds, FTAG); |
| 3912 | 3010 } |
| 3011 rw_exit(&dp->dp_config_rwlock); | |
| 3012 spa_close(spa, FTAG); | |
| 3013 | |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3014 return (error); |
| 3912 | 3015 } |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3016 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3017 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3018 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
|
3019 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
|
3020 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3021 int error = 0; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3022 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3023 ASSERT3S(asize, >, 0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3024 |
|
5831
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
3025 /* |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
3026 * *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
|
3027 * unconsumed refreservation space. |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
3028 */ |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
3029 *ref_rsrv = 0; |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
3030 |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3031 mutex_enter(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3032 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3033 * Make a space adjustment for reserved bytes. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3034 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3035 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
|
3036 ASSERT3U(*used, >=, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3037 ds->ds_reserved - ds->ds_phys->ds_unique_bytes); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3038 *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
|
3039 *ref_rsrv = |
|
48655d6b290b
6630761 In sub-filesystem, available space is less than refreservation space
ck153898
parents:
5712
diff
changeset
|
3040 asize - MIN(asize, parent_delta(ds, asize + inflight)); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3041 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3042 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3043 if (!check_quota || ds->ds_quota == 0) { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3044 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3045 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3046 } |
|
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 * 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
|
3049 * 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
|
3050 * 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
|
3051 * may free up space for us). |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3052 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3053 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
|
3054 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
|
3055 error = ERESTART; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3056 else |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3057 error = EDQUOT; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3058 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3059 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3060 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3061 return (error); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3062 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3063 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3064 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3065 static int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3066 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
|
3067 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3068 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3069 uint64_t *quotap = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3070 uint64_t new_quota = *quotap; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3071 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3072 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
|
3073 return (ENOTSUP); |
|
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 (new_quota == 0) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3076 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3077 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3078 if (new_quota < ds->ds_phys->ds_used_bytes || |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3079 new_quota < ds->ds_reserved) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3080 return (ENOSPC); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3081 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3082 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3083 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3084 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3085 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3086 void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3087 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
|
3088 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3089 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3090 uint64_t *quotap = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3091 uint64_t new_quota = *quotap; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3092 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3093 dmu_buf_will_dirty(ds->ds_dbuf, 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 ds->ds_quota = new_quota; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3096 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3097 dsl_dir_prop_set_uint64_sync(ds->ds_dir, "refquota", new_quota, cr, tx); |
|
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 spa_history_internal_log(LOG_DS_REFQUOTA, ds->ds_dir->dd_pool->dp_spa, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3100 tx, cr, "%lld dataset = %llu ", |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3101 (longlong_t)new_quota, ds->ds_object); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3102 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3103 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3104 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3105 dsl_dataset_set_quota(const char *dsname, uint64_t quota) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3106 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3107 dsl_dataset_t *ds; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3108 int err; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3109 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3110 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3111 if (err) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3112 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3113 |
|
5481
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3114 if (quota != ds->ds_quota) { |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3115 /* |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3116 * If someone removes a file, then tries to set the quota, we |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3117 * want to make sure the file freeing takes effect. |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3118 */ |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3119 txg_wait_open(ds->ds_dir->dd_pool, 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3120 |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3121 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3122 dsl_dataset_set_quota_check, dsl_dataset_set_quota_sync, |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3123 ds, "a, 0); |
|
1364fb7de75d
6619182 new non-sparse zvols should get refreservations
ck153898
parents:
5475
diff
changeset
|
3124 } |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3125 dsl_dataset_rele(ds, FTAG); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3126 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3127 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3128 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3129 static int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3130 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
|
3131 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3132 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3133 uint64_t *reservationp = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3134 uint64_t new_reservation = *reservationp; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3135 uint64_t unique; |
|
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 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
|
3138 SPA_VERSION_REFRESERVATION) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3139 return (ENOTSUP); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3140 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3141 if (dsl_dataset_is_snapshot(ds)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3142 return (EINVAL); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3143 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3144 /* |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3145 * 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
|
3146 * space estimates may be inaccurate. |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3147 */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3148 if (!dmu_tx_is_syncing(tx)) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3149 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3150 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3151 mutex_enter(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3152 unique = dsl_dataset_unique(ds); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3153 mutex_exit(&ds->ds_lock); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3154 |
|
8525
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3155 if (MAX(unique, new_reservation) > 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
|
3156 uint64_t delta = MAX(unique, new_reservation) - |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3157 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
|
3158 |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3159 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
|
3160 return (ENOSPC); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3161 if (ds->ds_quota > 0 && |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3162 new_reservation > ds->ds_quota) |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3163 return (ENOSPC); |
|
e0e0e525d0f8
6788830 set large value to reservation cause core dump
Eric Schrock <Eric.Schrock@Sun.COM>
parents:
8517
diff
changeset
|
3164 } |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3165 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3166 return (0); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3167 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3168 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3169 /* ARGSUSED */ |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3170 static void |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3171 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
|
3172 dmu_tx_t *tx) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3173 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3174 dsl_dataset_t *ds = arg1; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3175 uint64_t *reservationp = arg2; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3176 uint64_t new_reservation = *reservationp; |
|
7595
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3177 uint64_t unique; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3178 int64_t delta; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3179 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3180 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
|
3181 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3182 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
|
3183 mutex_enter(&ds->ds_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3184 unique = dsl_dataset_unique(ds); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3185 delta = MAX(0, (int64_t)(new_reservation - unique)) - |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3186 MAX(0, (int64_t)(ds->ds_reserved - unique)); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3187 ds->ds_reserved = new_reservation; |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3188 mutex_exit(&ds->ds_lock); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3189 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3190 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
|
3191 mutex_exit(&ds->ds_dir->dd_lock); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3192 dsl_dir_prop_set_uint64_sync(ds->ds_dir, "refreservation", |
|
7595
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3193 new_reservation, cr, tx); |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3194 |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3195 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
|
3196 ds->ds_dir->dd_pool->dp_spa, tx, cr, "%lld dataset = %llu", |
|
2ff5700c7efc
6747355 finish closing race condition when setting refreservation
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
7525
diff
changeset
|
3197 (longlong_t)new_reservation, ds->ds_object); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3198 } |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3199 |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3200 int |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3201 dsl_dataset_set_reservation(const char *dsname, uint64_t reservation) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3202 { |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3203 dsl_dataset_t *ds; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3204 int err; |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3205 |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3206 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3207 if (err) |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3208 return (err); |
|
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 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
|
3211 dsl_dataset_set_reservation_check, |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3212 dsl_dataset_set_reservation_sync, ds, &reservation, 0); |
|
6689
47572a2f5e73
6610506 Eliminate or improve retry logic from callers of dmu_objset_open()
maybee
parents:
6643
diff
changeset
|
3213 dsl_dataset_rele(ds, FTAG); |
|
5378
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3214 return (err); |
|
111aa1baa84a
PSARC 2007/555 zfs fs-only quotas and reservations
ck153898
parents:
5367
diff
changeset
|
3215 } |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3216 |
|
10342
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3217 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
|
3218 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
|
3219 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
|
3220 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
|
3221 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
|
3222 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
|
3223 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
|
3224 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
|
3225 }; |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3226 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3227 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3228 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
|
3229 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3230 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
|
3231 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
|
3232 char *htag = ha->htag; |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3233 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
|
3234 int error = 0; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3235 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3236 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
|
3237 return (ENOTSUP); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3238 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3239 if (!dsl_dataset_is_snapshot(ds)) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3240 return (EINVAL); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3241 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3242 /* tags must be unique */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3243 mutex_enter(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3244 if (ds->ds_phys->ds_userrefs_obj) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3245 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
|
3246 8, 1, tx); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3247 if (error == 0) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3248 error = EEXIST; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3249 else if (error == ENOENT) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3250 error = 0; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3251 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3252 mutex_exit(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3253 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3254 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3255 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3256 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3257 static void |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3258 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
|
3259 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3260 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
|
3261 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
|
3262 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
|
3263 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
|
3264 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
|
3265 time_t now = gethrestime_sec(); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3266 uint64_t zapobj; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3267 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3268 mutex_enter(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3269 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
|
3270 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3271 * 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
|
3272 * the userrefs zap object. |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3273 */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3274 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
|
3275 zapobj = ds->ds_phys->ds_userrefs_obj = |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3276 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
|
3277 } else { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3278 zapobj = ds->ds_phys->ds_userrefs_obj; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3279 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3280 ds->ds_userrefs++; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3281 mutex_exit(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3282 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3283 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
|
3284 |
|
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 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
|
3286 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
|
3287 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
|
3288 } |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3289 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3290 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
|
3291 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
|
3292 (int)ha->temphold, ds->ds_object); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3293 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3294 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3295 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3296 dsl_dataset_user_hold_one(char *dsname, void *arg) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3297 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3298 struct dsl_ds_holdarg *ha = arg; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3299 dsl_dataset_t *ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3300 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3301 char *name; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3302 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3303 /* 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
|
3304 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
|
3305 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
|
3306 strfree(name); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3307 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
|
3308 ha->gotone = B_TRUE; |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3309 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
|
3310 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
|
3311 } else if (error == ENOENT && ha->recursive) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3312 error = 0; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3313 } else { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3314 (void) strcpy(ha->failed, dsname); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3315 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3316 return (error); |
|
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 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3319 int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3320 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
|
3321 boolean_t recursive, boolean_t temphold) |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3322 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3323 struct dsl_ds_holdarg *ha; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3324 dsl_sync_task_t *dst; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3325 spa_t *spa; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3326 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3327 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3328 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
|
3329 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3330 (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
|
3331 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3332 error = spa_open(dsname, &spa, FTAG); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3333 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3334 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
|
3335 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3336 } |
|
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 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
|
3339 ha->htag = htag; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3340 ha->snapname = snapname; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3341 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
|
3342 ha->temphold = temphold; |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3343 if (recursive) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3344 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
|
3345 ha, DS_FIND_CHILDREN); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3346 } else { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3347 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
|
3348 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3349 if (error == 0) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3350 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
|
3351 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3352 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
|
3353 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
|
3354 dsl_dataset_t *ds = dst->dst_arg1; |
|
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 if (dst->dst_err) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3357 dsl_dataset_name(ds, ha->failed); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3358 *strchr(ha->failed, '@') = '\0'; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3359 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3360 dsl_dataset_rele(ds, ha->dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3361 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3362 |
|
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
|
3363 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
|
3364 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
|
3365 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3366 if (error) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3367 (void) strcpy(dsname, ha->failed); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3368 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3369 dsl_sync_task_group_destroy(ha->dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3370 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
|
3371 spa_close(spa, FTAG); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3372 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3373 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3374 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3375 struct dsl_ds_releasearg { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3376 dsl_dataset_t *ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3377 const char *htag; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3378 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
|
3379 }; |
|
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 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3382 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
|
3383 boolean_t *might_destroy) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3384 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3385 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
|
3386 uint64_t zapobj; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3387 uint64_t tmp; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3388 int error; |
|
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 *might_destroy = B_FALSE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3391 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3392 mutex_enter(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3393 zapobj = ds->ds_phys->ds_userrefs_obj; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3394 if (zapobj == 0) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3395 /* The tag can't possibly exist */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3396 mutex_exit(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3397 return (ESRCH); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3398 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3399 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3400 /* Make sure the tag exists */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3401 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
|
3402 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3403 mutex_exit(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3404 if (error == ENOENT) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3405 error = ESRCH; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3406 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3407 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3408 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3409 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
|
3410 DS_IS_DEFER_DESTROY(ds)) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3411 *might_destroy = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3412 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3413 mutex_exit(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3414 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3415 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3416 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3417 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3418 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
|
3419 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3420 struct dsl_ds_releasearg *ra = arg1; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3421 dsl_dataset_t *ds = ra->ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3422 boolean_t might_destroy; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3423 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3424 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3425 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
|
3426 return (ENOTSUP); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3427 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3428 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
|
3429 if (error) |
|
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 if (might_destroy) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3433 struct dsl_ds_destroyarg dsda = {0}; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3434 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3435 if (dmu_tx_is_syncing(tx)) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3436 /* |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3437 * 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
|
3438 * 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
|
3439 */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3440 if (!ra->own) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3441 return (EBUSY); |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3442 if (ds->ds_objset) { |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3443 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
|
3444 ds->ds_objset = NULL; |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3445 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3446 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3447 dsda.ds = ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3448 dsda.releasing = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3449 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
|
3450 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3451 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3452 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3453 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3454 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3455 static void |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3456 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
|
3457 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3458 struct dsl_ds_releasearg *ra = arg1; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3459 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
|
3460 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
|
3461 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
|
3462 uint64_t zapobj; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3463 uint64_t dsobj = ds->ds_object; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3464 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
|
3465 int error; |
|
10242
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 mutex_enter(&ds->ds_lock); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3468 ds->ds_userrefs--; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3469 refs = ds->ds_userrefs; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3470 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
|
3471 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
|
3472 VERIFY(error == 0 || error == ENOENT); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3473 zapobj = ds->ds_phys->ds_userrefs_obj; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3474 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
|
3475 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
|
3476 DS_IS_DEFER_DESTROY(ds)) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3477 struct dsl_ds_destroyarg dsda = {0}; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3478 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3479 ASSERT(ra->own); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3480 dsda.ds = ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3481 dsda.releasing = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3482 /* We already did the destroy_check */ |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3483 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
|
3484 } |
|
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 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
|
3487 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
|
3488 ra->htag, (longlong_t)refs, dsobj); |
|
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 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3491 static int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3492 dsl_dataset_user_release_one(char *dsname, void *arg) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3493 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3494 struct dsl_ds_holdarg *ha = arg; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3495 struct dsl_ds_releasearg *ra; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3496 dsl_dataset_t *ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3497 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3498 void *dtag = ha->dstg; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3499 char *name; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3500 boolean_t own = B_FALSE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3501 boolean_t might_destroy; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3502 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3503 /* 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
|
3504 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
|
3505 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
|
3506 strfree(name); |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3507 if (error == ENOENT && ha->recursive) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3508 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3509 (void) strcpy(ha->failed, dsname); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3510 if (error) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3511 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3512 |
|
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
|
3513 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
|
3514 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3515 ASSERT(dsl_dataset_is_snapshot(ds)); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3516 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3517 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
|
3518 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3519 dsl_dataset_rele(ds, dtag); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3520 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3521 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3522 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3523 if (might_destroy) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3524 #ifdef _KERNEL |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3525 error = zfs_unmount_snap(name, NULL); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3526 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3527 dsl_dataset_rele(ds, dtag); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3528 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3529 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3530 error = dsl_dataset_zvol_cleanup(ds, name); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3531 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3532 dsl_dataset_rele(ds, dtag); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3533 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3534 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3535 #endif |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3536 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
|
3537 dsl_dataset_rele(ds, dtag); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3538 return (EBUSY); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3539 } else { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3540 own = B_TRUE; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3541 dsl_dataset_make_exclusive(ds, dtag); |
|
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 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3545 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
|
3546 ra->ds = ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3547 ra->htag = ha->htag; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3548 ra->own = own; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3549 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
|
3550 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
|
3551 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3552 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3553 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3554 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3555 int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3556 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
|
3557 boolean_t recursive) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3558 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3559 struct dsl_ds_holdarg *ha; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3560 dsl_sync_task_t *dst; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3561 spa_t *spa; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3562 int error; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3563 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3564 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
|
3565 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3566 (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
|
3567 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3568 error = spa_open(dsname, &spa, FTAG); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3569 if (error) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3570 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
|
3571 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3572 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3573 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3574 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
|
3575 ha->htag = htag; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3576 ha->snapname = snapname; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3577 ha->recursive = recursive; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3578 if (recursive) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3579 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
|
3580 ha, DS_FIND_CHILDREN); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3581 } else { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3582 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
|
3583 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3584 if (error == 0) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3585 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
|
3586 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3587 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
|
3588 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
|
3589 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
|
3590 dsl_dataset_t *ds = ra->ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3591 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3592 if (dst->dst_err) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3593 dsl_dataset_name(ds, ha->failed); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3594 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3595 if (ra->own) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3596 dsl_dataset_disown(ds, ha->dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3597 else |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3598 dsl_dataset_rele(ds, ha->dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3599 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3600 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
|
3601 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3602 |
|
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
|
3603 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
|
3604 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
|
3605 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3606 if (error) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3607 (void) strcpy(dsname, ha->failed); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3608 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3609 dsl_sync_task_group_destroy(ha->dstg); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3610 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
|
3611 spa_close(spa, FTAG); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3612 return (error); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3613 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3614 |
|
10342
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3615 /* |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3616 * 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
|
3617 */ |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3618 int |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3619 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
|
3620 { |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3621 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
|
3622 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
|
3623 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
|
3624 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
|
3625 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
|
3626 |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3627 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
|
3628 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
|
3629 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
|
3630 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
|
3631 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
|
3632 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
|
3633 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
|
3634 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
|
3635 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
|
3636 |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3637 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
|
3638 *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
|
3639 ++snap; |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3640 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
|
3641 } |
|
108f0058f837
6833815 scheduled snapshots deleted per snapshot policy can lead to replication failures
Chris Kirby <chris.kirby@sun.com>
parents:
10298
diff
changeset
|
3642 |
|
10242
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3643 int |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3644 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
|
3645 { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3646 dsl_dataset_t *ds; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3647 int err; |
|
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 err = dsl_dataset_hold(dsname, FTAG, &ds); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3650 if (err) |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3651 return (err); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3652 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3653 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
|
3654 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
|
3655 zap_attribute_t *za; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3656 zap_cursor_t zc; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3657 |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3658 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
|
3659 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
|
3660 ds->ds_phys->ds_userrefs_obj); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3661 zap_cursor_retrieve(&zc, za) == 0; |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3662 zap_cursor_advance(&zc)) { |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3663 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
|
3664 za->za_first_integer)); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3665 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3666 zap_cursor_fini(&zc); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3667 kmem_free(za, sizeof (zap_attribute_t)); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3668 } |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3669 dsl_dataset_rele(ds, FTAG); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3670 return (0); |
|
c40d075fbca6
PSARC/2009/297 zfs snapshot holds
Chris Kirby <chris.kirby@sun.com>
parents:
10204
diff
changeset
|
3671 } |
|
10298
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3672 |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3673 /* |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3674 * 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
|
3675 * 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
|
3676 * 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
|
3677 * process one of them. |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3678 */ |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3679 /* ARGSUSED */ |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3680 int |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3681 dsl_destroy_inconsistent(char *dsname, void *arg) |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3682 { |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3683 dsl_dataset_t *ds; |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3684 |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3685 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
|
3686 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
|
3687 (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
|
3688 else |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3689 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
|
3690 } |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3691 return (0); |
|
a0d52501437c
6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents:
10272
diff
changeset
|
3692 } |