Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 5367:c40abbe796be
PSARC/2007/574 zfs send -R
6358519 'zfs restore' can't restore full backup into topmost filesystem
6421958 want recursive zfs send ('zfs send -r')
6465969 zfs receive error message could be a little more friendly
6482331 assertion failed: ra.err == 0 (0x10 == 0x0)
6577548 nvlist_next_nvpair() can not iterate recursively
6579048 zfs send -i "" fs@snap can succeed
6580447 "zfs list -t filesystem" slowly iterates over all snapshots
6581508 zfs issues confusing error message when doing an incremental send
6585612 'zfs recv -d' cannot receive the top-level filesystem backups
6589317 create-time permissions not granted on filesystems created by "zfs recv"
6596160 zfs create -p -b 1092 <filesystem> should fail.
6619393 help message for ::dbufs is slightly wrong
6620906 zfs_rename() gives incorrect error message
6621295 dsl_deleg_set_sync() should be broken up
| author | ahrens |
|---|---|
| date | Mon, 29 Oct 2007 17:12:17 -0700 |
| parents | 6752aa2bd5bc |
| children | 111aa1baa84a |
| 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 /* | |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
| 789 | 23 * Use is subject to license terms. |
| 24 */ | |
| 25 | |
| 26 #pragma ident "%Z%%M% %I% %E% SMI" | |
| 27 | |
| 28 #include <sys/dmu_objset.h> | |
| 29 #include <sys/dsl_dataset.h> | |
| 30 #include <sys/dsl_dir.h> | |
| 2082 | 31 #include <sys/dsl_prop.h> |
| 2199 | 32 #include <sys/dsl_synctask.h> |
| 789 | 33 #include <sys/dmu_traverse.h> |
| 34 #include <sys/dmu_tx.h> | |
| 35 #include <sys/arc.h> | |
| 36 #include <sys/zio.h> | |
| 37 #include <sys/zap.h> | |
| 38 #include <sys/unique.h> | |
| 39 #include <sys/zfs_context.h> | |
| 4007 | 40 #include <sys/zfs_ioctl.h> |
| 4543 | 41 #include <sys/spa.h> |
| 42 #include <sys/sunddi.h> | |
| 789 | 43 |
| 2199 | 44 static dsl_checkfunc_t dsl_dataset_destroy_begin_check; |
| 45 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync; | |
| 46 static dsl_checkfunc_t dsl_dataset_rollback_check; | |
| 47 static dsl_syncfunc_t dsl_dataset_rollback_sync; | |
|
1731
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
48 |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
49 #define DS_REF_MAX (1ULL << 62) |
| 789 | 50 |
| 51 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE | |
| 52 | |
| 53 /* | |
| 54 * We use weighted reference counts to express the various forms of exclusion | |
| 55 * between different open modes. A STANDARD open is 1 point, an EXCLUSIVE open | |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
56 * is DS_REF_MAX, and a PRIMARY open is little more than half of an EXCLUSIVE. |
| 789 | 57 * This makes the exclusion logic simple: the total refcnt for all opens cannot |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
58 * exceed DS_REF_MAX. For example, EXCLUSIVE opens are exclusive because their |
|
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
59 * weight (DS_REF_MAX) consumes the entire refcnt space. PRIMARY opens consume |
| 789 | 60 * just over half of the refcnt space, so there can't be more than one, but it |
| 61 * can peacefully coexist with any number of STANDARD opens. | |
| 62 */ | |
| 63 static uint64_t ds_refcnt_weight[DS_MODE_LEVELS] = { | |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
64 0, /* DS_MODE_NONE - invalid */ |
|
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
65 1, /* DS_MODE_STANDARD - unlimited number */ |
|
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
66 (DS_REF_MAX >> 1) + 1, /* DS_MODE_PRIMARY - only one of these */ |
|
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
67 DS_REF_MAX /* DS_MODE_EXCLUSIVE - no other opens */ |
| 789 | 68 }; |
| 69 | |
| 70 | |
| 71 void | |
| 72 dsl_dataset_block_born(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 73 { | |
| 2082 | 74 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp); |
| 789 | 75 int compressed = BP_GET_PSIZE(bp); |
| 76 int uncompressed = BP_GET_UCSIZE(bp); | |
| 77 | |
| 78 dprintf_bp(bp, "born, ds=%p\n", ds); | |
| 79 | |
| 80 ASSERT(dmu_tx_is_syncing(tx)); | |
| 81 /* It could have been compressed away to nothing */ | |
| 82 if (BP_IS_HOLE(bp)) | |
| 83 return; | |
| 84 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE); | |
| 85 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES); | |
| 86 if (ds == NULL) { | |
| 87 /* | |
| 88 * Account for the meta-objset space in its placeholder | |
| 89 * dsl_dir. | |
| 90 */ | |
| 91 ASSERT3U(compressed, ==, uncompressed); /* it's all metadata */ | |
| 92 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, | |
| 93 used, compressed, uncompressed, tx); | |
| 94 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx); | |
| 95 return; | |
| 96 } | |
| 97 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 98 mutex_enter(&ds->ds_lock); | |
| 99 ds->ds_phys->ds_used_bytes += used; | |
| 100 ds->ds_phys->ds_compressed_bytes += compressed; | |
| 101 ds->ds_phys->ds_uncompressed_bytes += uncompressed; | |
| 102 ds->ds_phys->ds_unique_bytes += used; | |
| 103 mutex_exit(&ds->ds_lock); | |
| 104 dsl_dir_diduse_space(ds->ds_dir, | |
| 105 used, compressed, uncompressed, tx); | |
| 106 } | |
| 107 | |
| 108 void | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
109 dsl_dataset_block_kill(dsl_dataset_t *ds, blkptr_t *bp, zio_t *pio, |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
110 dmu_tx_t *tx) |
| 789 | 111 { |
| 2082 | 112 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp); |
| 789 | 113 int compressed = BP_GET_PSIZE(bp); |
| 114 int uncompressed = BP_GET_UCSIZE(bp); | |
| 115 | |
| 116 ASSERT(dmu_tx_is_syncing(tx)); | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
117 /* No block pointer => nothing to free */ |
| 789 | 118 if (BP_IS_HOLE(bp)) |
| 119 return; | |
| 120 | |
| 121 ASSERT(used > 0); | |
| 122 if (ds == NULL) { | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
123 int err; |
| 789 | 124 /* |
| 125 * Account for the meta-objset space in its placeholder | |
| 126 * dataset. | |
| 127 */ | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
128 err = arc_free(pio, tx->tx_pool->dp_spa, |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
129 tx->tx_txg, bp, NULL, NULL, pio ? ARC_NOWAIT: ARC_WAIT); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
130 ASSERT(err == 0); |
| 789 | 131 |
| 132 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, | |
| 133 -used, -compressed, -uncompressed, tx); | |
| 134 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx); | |
| 135 return; | |
| 136 } | |
| 137 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool); | |
| 138 | |
| 139 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 140 | |
| 141 if (bp->blk_birth > ds->ds_phys->ds_prev_snap_txg) { | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
142 int err; |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
143 |
| 789 | 144 dprintf_bp(bp, "freeing: %s", ""); |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
145 err = arc_free(pio, tx->tx_pool->dp_spa, |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
146 tx->tx_txg, bp, NULL, NULL, pio ? ARC_NOWAIT: ARC_WAIT); |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
147 ASSERT(err == 0); |
| 789 | 148 |
| 149 mutex_enter(&ds->ds_lock); | |
| 150 /* XXX unique_bytes is not accurate for head datasets */ | |
| 151 /* ASSERT3U(ds->ds_phys->ds_unique_bytes, >=, used); */ | |
| 152 ds->ds_phys->ds_unique_bytes -= used; | |
| 153 mutex_exit(&ds->ds_lock); | |
| 154 dsl_dir_diduse_space(ds->ds_dir, | |
| 155 -used, -compressed, -uncompressed, tx); | |
| 156 } else { | |
| 157 dprintf_bp(bp, "putting on dead list: %s", ""); | |
| 1544 | 158 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, bp, tx)); |
| 789 | 159 /* if (bp->blk_birth > prev prev snap txg) prev unique += bs */ |
| 160 if (ds->ds_phys->ds_prev_snap_obj != 0) { | |
| 161 ASSERT3U(ds->ds_prev->ds_object, ==, | |
| 162 ds->ds_phys->ds_prev_snap_obj); | |
| 163 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0); | |
| 164 if (ds->ds_prev->ds_phys->ds_next_snap_obj == | |
| 2082 | 165 ds->ds_object && bp->blk_birth > |
| 789 | 166 ds->ds_prev->ds_phys->ds_prev_snap_txg) { |
| 167 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 168 mutex_enter(&ds->ds_prev->ds_lock); | |
| 169 ds->ds_prev->ds_phys->ds_unique_bytes += | |
| 170 used; | |
| 171 mutex_exit(&ds->ds_prev->ds_lock); | |
| 172 } | |
| 173 } | |
| 174 } | |
| 175 mutex_enter(&ds->ds_lock); | |
| 176 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used); | |
| 177 ds->ds_phys->ds_used_bytes -= used; | |
| 178 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed); | |
| 179 ds->ds_phys->ds_compressed_bytes -= compressed; | |
| 180 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed); | |
| 181 ds->ds_phys->ds_uncompressed_bytes -= uncompressed; | |
| 182 mutex_exit(&ds->ds_lock); | |
| 183 } | |
| 184 | |
| 1544 | 185 uint64_t |
| 186 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds) | |
| 789 | 187 { |
| 2885 | 188 uint64_t trysnap = 0; |
| 189 | |
| 789 | 190 if (ds == NULL) |
| 1544 | 191 return (0); |
| 789 | 192 /* |
| 193 * The snapshot creation could fail, but that would cause an | |
| 194 * incorrect FALSE return, which would only result in an | |
| 195 * overestimation of the amount of space that an operation would | |
| 196 * consume, which is OK. | |
| 197 * | |
| 198 * There's also a small window where we could miss a pending | |
| 199 * snapshot, because we could set the sync task in the quiescing | |
| 200 * phase. So this should only be used as a guess. | |
| 201 */ | |
| 2885 | 202 if (ds->ds_trysnap_txg > |
| 203 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa)) | |
| 204 trysnap = ds->ds_trysnap_txg; | |
| 205 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap)); | |
| 1544 | 206 } |
| 207 | |
| 208 int | |
| 209 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth) | |
| 210 { | |
| 211 return (blk_birth > dsl_dataset_prev_snap_txg(ds)); | |
| 789 | 212 } |
| 213 | |
| 214 /* ARGSUSED */ | |
| 215 static void | |
| 216 dsl_dataset_evict(dmu_buf_t *db, void *dsv) | |
| 217 { | |
| 218 dsl_dataset_t *ds = dsv; | |
| 219 | |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
220 /* open_refcount == DS_REF_MAX when deleting */ |
| 789 | 221 ASSERT(ds->ds_open_refcount == 0 || |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
222 ds->ds_open_refcount == DS_REF_MAX); |
| 789 | 223 |
| 224 dprintf_ds(ds, "evicting %s\n", ""); | |
| 225 | |
| 4787 | 226 unique_remove(ds->ds_fsid_guid); |
| 789 | 227 |
| 228 if (ds->ds_user_ptr != NULL) | |
| 229 ds->ds_user_evict_func(ds, ds->ds_user_ptr); | |
| 230 | |
| 231 if (ds->ds_prev) { | |
| 232 dsl_dataset_close(ds->ds_prev, DS_MODE_NONE, ds); | |
| 233 ds->ds_prev = NULL; | |
| 234 } | |
| 235 | |
| 236 bplist_close(&ds->ds_deadlist); | |
| 237 dsl_dir_close(ds->ds_dir, ds); | |
| 238 | |
| 4787 | 239 ASSERT(!list_link_active(&ds->ds_synced_link)); |
| 789 | 240 |
| 2856 | 241 mutex_destroy(&ds->ds_lock); |
| 4787 | 242 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 243 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
| 244 | |
| 789 | 245 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 246 } | |
| 247 | |
| 1544 | 248 static int |
| 789 | 249 dsl_dataset_get_snapname(dsl_dataset_t *ds) |
| 250 { | |
| 251 dsl_dataset_phys_t *headphys; | |
| 252 int err; | |
| 253 dmu_buf_t *headdbuf; | |
| 254 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 255 objset_t *mos = dp->dp_meta_objset; | |
| 256 | |
| 257 if (ds->ds_snapname[0]) | |
| 1544 | 258 return (0); |
| 789 | 259 if (ds->ds_phys->ds_next_snap_obj == 0) |
| 1544 | 260 return (0); |
| 789 | 261 |
| 1544 | 262 err = dmu_bonus_hold(mos, ds->ds_dir->dd_phys->dd_head_dataset_obj, |
| 263 FTAG, &headdbuf); | |
| 264 if (err) | |
| 265 return (err); | |
| 789 | 266 headphys = headdbuf->db_data; |
| 267 err = zap_value_search(dp->dp_meta_objset, | |
| 4577 | 268 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname); |
| 1544 | 269 dmu_buf_rele(headdbuf, FTAG); |
| 270 return (err); | |
| 789 | 271 } |
| 272 | |
| 1544 | 273 int |
| 789 | 274 dsl_dataset_open_obj(dsl_pool_t *dp, uint64_t dsobj, const char *snapname, |
| 1544 | 275 int mode, void *tag, dsl_dataset_t **dsp) |
| 789 | 276 { |
| 277 uint64_t weight = ds_refcnt_weight[DS_MODE_LEVEL(mode)]; | |
| 278 objset_t *mos = dp->dp_meta_objset; | |
| 279 dmu_buf_t *dbuf; | |
| 280 dsl_dataset_t *ds; | |
| 1544 | 281 int err; |
| 789 | 282 |
| 283 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || | |
| 284 dsl_pool_sync_context(dp)); | |
| 285 | |
| 1544 | 286 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf); |
| 287 if (err) | |
| 288 return (err); | |
| 789 | 289 ds = dmu_buf_get_user(dbuf); |
| 290 if (ds == NULL) { | |
| 291 dsl_dataset_t *winner; | |
| 292 | |
| 293 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP); | |
| 294 ds->ds_dbuf = dbuf; | |
| 295 ds->ds_object = dsobj; | |
| 296 ds->ds_phys = dbuf->db_data; | |
| 297 | |
| 2856 | 298 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL); |
| 4787 | 299 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 300 mutex_init(&ds->ds_deadlist.bpl_lock, NULL, MUTEX_DEFAULT, |
| 301 NULL); | |
| 302 | |
| 1544 | 303 err = bplist_open(&ds->ds_deadlist, |
| 789 | 304 mos, ds->ds_phys->ds_deadlist_obj); |
| 1544 | 305 if (err == 0) { |
| 306 err = dsl_dir_open_obj(dp, | |
| 307 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir); | |
| 308 } | |
| 309 if (err) { | |
| 310 /* | |
| 311 * we don't really need to close the blist if we | |
| 312 * just opened it. | |
| 313 */ | |
| 2856 | 314 mutex_destroy(&ds->ds_lock); |
| 4787 | 315 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 316 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
| 1544 | 317 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 318 dmu_buf_rele(dbuf, tag); | |
| 319 return (err); | |
| 320 } | |
| 789 | 321 |
| 322 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == dsobj) { | |
| 323 ds->ds_snapname[0] = '\0'; | |
| 324 if (ds->ds_phys->ds_prev_snap_obj) { | |
| 1544 | 325 err = dsl_dataset_open_obj(dp, |
| 789 | 326 ds->ds_phys->ds_prev_snap_obj, NULL, |
| 1544 | 327 DS_MODE_NONE, ds, &ds->ds_prev); |
| 789 | 328 } |
| 329 } else { | |
| 330 if (snapname) { | |
| 331 #ifdef ZFS_DEBUG | |
| 332 dsl_dataset_phys_t *headphys; | |
| 1544 | 333 dmu_buf_t *headdbuf; |
| 334 err = dmu_bonus_hold(mos, | |
| 335 ds->ds_dir->dd_phys->dd_head_dataset_obj, | |
| 336 FTAG, &headdbuf); | |
| 337 if (err == 0) { | |
| 338 headphys = headdbuf->db_data; | |
| 339 uint64_t foundobj; | |
| 340 err = zap_lookup(dp->dp_meta_objset, | |
| 341 headphys->ds_snapnames_zapobj, | |
| 342 snapname, sizeof (foundobj), 1, | |
| 343 &foundobj); | |
| 344 ASSERT3U(foundobj, ==, dsobj); | |
| 345 dmu_buf_rele(headdbuf, FTAG); | |
| 346 } | |
| 789 | 347 #endif |
| 348 (void) strcat(ds->ds_snapname, snapname); | |
| 349 } else if (zfs_flags & ZFS_DEBUG_SNAPNAMES) { | |
| 1544 | 350 err = dsl_dataset_get_snapname(ds); |
| 789 | 351 } |
| 352 } | |
| 353 | |
| 1544 | 354 if (err == 0) { |
| 355 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys, | |
| 356 dsl_dataset_evict); | |
| 357 } | |
| 358 if (err || winner) { | |
| 789 | 359 bplist_close(&ds->ds_deadlist); |
| 360 if (ds->ds_prev) { | |
| 361 dsl_dataset_close(ds->ds_prev, | |
| 362 DS_MODE_NONE, ds); | |
| 363 } | |
| 364 dsl_dir_close(ds->ds_dir, ds); | |
| 2856 | 365 mutex_destroy(&ds->ds_lock); |
| 4787 | 366 mutex_destroy(&ds->ds_opening_lock); |
| 2856 | 367 mutex_destroy(&ds->ds_deadlist.bpl_lock); |
| 789 | 368 kmem_free(ds, sizeof (dsl_dataset_t)); |
| 1544 | 369 if (err) { |
| 370 dmu_buf_rele(dbuf, tag); | |
| 371 return (err); | |
| 372 } | |
| 789 | 373 ds = winner; |
| 374 } else { | |
| 4787 | 375 ds->ds_fsid_guid = |
| 789 | 376 unique_insert(ds->ds_phys->ds_fsid_guid); |
| 377 } | |
| 378 } | |
| 379 ASSERT3P(ds->ds_dbuf, ==, dbuf); | |
| 380 ASSERT3P(ds->ds_phys, ==, dbuf->db_data); | |
| 381 | |
| 382 mutex_enter(&ds->ds_lock); | |
| 383 if ((DS_MODE_LEVEL(mode) == DS_MODE_PRIMARY && | |
| 2082 | 384 (ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) && |
| 385 !DS_MODE_IS_INCONSISTENT(mode)) || | |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
386 (ds->ds_open_refcount + weight > DS_REF_MAX)) { |
| 789 | 387 mutex_exit(&ds->ds_lock); |
| 388 dsl_dataset_close(ds, DS_MODE_NONE, tag); | |
| 1544 | 389 return (EBUSY); |
| 789 | 390 } |
| 391 ds->ds_open_refcount += weight; | |
| 392 mutex_exit(&ds->ds_lock); | |
| 393 | |
| 1544 | 394 *dsp = ds; |
| 395 return (0); | |
| 789 | 396 } |
| 397 | |
| 398 int | |
| 399 dsl_dataset_open_spa(spa_t *spa, const char *name, int mode, | |
| 400 void *tag, dsl_dataset_t **dsp) | |
| 401 { | |
| 402 dsl_dir_t *dd; | |
| 403 dsl_pool_t *dp; | |
| 404 const char *tail; | |
| 405 uint64_t obj; | |
| 406 dsl_dataset_t *ds = NULL; | |
| 407 int err = 0; | |
| 408 | |
| 1544 | 409 err = dsl_dir_open_spa(spa, name, FTAG, &dd, &tail); |
| 410 if (err) | |
| 411 return (err); | |
| 789 | 412 |
| 413 dp = dd->dd_pool; | |
| 414 obj = dd->dd_phys->dd_head_dataset_obj; | |
| 415 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
| 416 if (obj == 0) { | |
| 417 /* A dataset with no associated objset */ | |
| 418 err = ENOENT; | |
| 419 goto out; | |
| 420 } | |
| 421 | |
| 422 if (tail != NULL) { | |
| 423 objset_t *mos = dp->dp_meta_objset; | |
| 424 | |
| 1544 | 425 err = dsl_dataset_open_obj(dp, obj, NULL, |
| 426 DS_MODE_NONE, tag, &ds); | |
| 427 if (err) | |
| 428 goto out; | |
| 789 | 429 obj = ds->ds_phys->ds_snapnames_zapobj; |
| 430 dsl_dataset_close(ds, DS_MODE_NONE, tag); | |
| 431 ds = NULL; | |
| 432 | |
| 433 if (tail[0] != '@') { | |
| 434 err = ENOENT; | |
| 435 goto out; | |
| 436 } | |
| 437 tail++; | |
| 438 | |
| 439 /* Look for a snapshot */ | |
| 440 if (!DS_MODE_IS_READONLY(mode)) { | |
| 441 err = EROFS; | |
| 442 goto out; | |
| 443 } | |
| 444 dprintf("looking for snapshot '%s'\n", tail); | |
| 445 err = zap_lookup(mos, obj, tail, 8, 1, &obj); | |
| 446 if (err) | |
| 447 goto out; | |
| 448 } | |
| 1544 | 449 err = dsl_dataset_open_obj(dp, obj, tail, mode, tag, &ds); |
| 789 | 450 |
| 451 out: | |
| 452 rw_exit(&dp->dp_config_rwlock); | |
| 453 dsl_dir_close(dd, FTAG); | |
| 454 | |
| 455 ASSERT3U((err == 0), ==, (ds != NULL)); | |
| 456 /* ASSERT(ds == NULL || strcmp(name, ds->ds_name) == 0); */ | |
| 457 | |
| 458 *dsp = ds; | |
| 459 return (err); | |
| 460 } | |
| 461 | |
| 462 int | |
| 463 dsl_dataset_open(const char *name, int mode, void *tag, dsl_dataset_t **dsp) | |
| 464 { | |
| 465 return (dsl_dataset_open_spa(NULL, name, mode, tag, dsp)); | |
| 466 } | |
| 467 | |
| 468 void | |
| 469 dsl_dataset_name(dsl_dataset_t *ds, char *name) | |
| 470 { | |
| 471 if (ds == NULL) { | |
| 472 (void) strcpy(name, "mos"); | |
| 473 } else { | |
| 474 dsl_dir_name(ds->ds_dir, name); | |
| 1544 | 475 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 476 if (ds->ds_snapname[0]) { |
| 477 (void) strcat(name, "@"); | |
| 478 if (!MUTEX_HELD(&ds->ds_lock)) { | |
| 479 /* | |
| 480 * We use a "recursive" mutex so that we | |
| 481 * can call dprintf_ds() with ds_lock held. | |
| 482 */ | |
| 483 mutex_enter(&ds->ds_lock); | |
| 484 (void) strcat(name, ds->ds_snapname); | |
| 485 mutex_exit(&ds->ds_lock); | |
| 486 } else { | |
| 487 (void) strcat(name, ds->ds_snapname); | |
| 488 } | |
| 489 } | |
| 490 } | |
| 491 } | |
| 492 | |
|
3978
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
493 static int |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
494 dsl_dataset_namelen(dsl_dataset_t *ds) |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
495 { |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
496 int result; |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
497 |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
498 if (ds == NULL) { |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
499 result = 3; /* "mos" */ |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
500 } else { |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
501 result = dsl_dir_namelen(ds->ds_dir); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
502 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
503 if (ds->ds_snapname[0]) { |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
504 ++result; /* adding one for the @-sign */ |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
505 if (!MUTEX_HELD(&ds->ds_lock)) { |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
506 /* see dsl_datset_name */ |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
507 mutex_enter(&ds->ds_lock); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
508 result += strlen(ds->ds_snapname); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
509 mutex_exit(&ds->ds_lock); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
510 } else { |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
511 result += strlen(ds->ds_snapname); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
512 } |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
513 } |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
514 } |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
515 |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
516 return (result); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
517 } |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
518 |
| 789 | 519 void |
| 520 dsl_dataset_close(dsl_dataset_t *ds, int mode, void *tag) | |
| 521 { | |
| 522 uint64_t weight = ds_refcnt_weight[DS_MODE_LEVEL(mode)]; | |
| 523 mutex_enter(&ds->ds_lock); | |
| 524 ASSERT3U(ds->ds_open_refcount, >=, weight); | |
| 525 ds->ds_open_refcount -= weight; | |
| 526 dprintf_ds(ds, "closing mode %u refcount now 0x%llx\n", | |
| 527 mode, ds->ds_open_refcount); | |
| 528 mutex_exit(&ds->ds_lock); | |
| 529 | |
| 1544 | 530 dmu_buf_rele(ds->ds_dbuf, tag); |
| 789 | 531 } |
| 532 | |
| 533 void | |
| 5367 | 534 dsl_dataset_downgrade(dsl_dataset_t *ds, int oldmode, int newmode) |
| 535 { | |
| 536 uint64_t oldweight = ds_refcnt_weight[DS_MODE_LEVEL(oldmode)]; | |
| 537 uint64_t newweight = ds_refcnt_weight[DS_MODE_LEVEL(newmode)]; | |
| 538 mutex_enter(&ds->ds_lock); | |
| 539 ASSERT3U(ds->ds_open_refcount, >=, oldweight); | |
| 540 ASSERT3U(oldweight, >=, newweight); | |
| 541 ds->ds_open_refcount -= oldweight; | |
| 542 ds->ds_open_refcount += newweight; | |
| 543 mutex_exit(&ds->ds_lock); | |
| 544 } | |
| 545 | |
| 546 boolean_t | |
| 547 dsl_dataset_tryupgrade(dsl_dataset_t *ds, int oldmode, int newmode) | |
| 548 { | |
| 549 boolean_t rv; | |
| 550 uint64_t oldweight = ds_refcnt_weight[DS_MODE_LEVEL(oldmode)]; | |
| 551 uint64_t newweight = ds_refcnt_weight[DS_MODE_LEVEL(newmode)]; | |
| 552 mutex_enter(&ds->ds_lock); | |
| 553 ASSERT3U(ds->ds_open_refcount, >=, oldweight); | |
| 554 ASSERT3U(newweight, >=, oldweight); | |
| 555 if (ds->ds_open_refcount - oldweight + newweight > DS_REF_MAX) { | |
| 556 rv = B_FALSE; | |
| 557 } else { | |
| 558 ds->ds_open_refcount -= oldweight; | |
| 559 ds->ds_open_refcount += newweight; | |
| 560 rv = B_TRUE; | |
| 561 } | |
| 562 mutex_exit(&ds->ds_lock); | |
| 563 return (rv); | |
| 564 } | |
| 565 | |
| 566 void | |
| 789 | 567 dsl_dataset_create_root(dsl_pool_t *dp, uint64_t *ddobjp, dmu_tx_t *tx) |
| 568 { | |
| 569 objset_t *mos = dp->dp_meta_objset; | |
| 570 dmu_buf_t *dbuf; | |
| 571 dsl_dataset_phys_t *dsphys; | |
| 572 dsl_dataset_t *ds; | |
| 573 uint64_t dsobj; | |
| 574 dsl_dir_t *dd; | |
| 575 | |
| 576 dsl_dir_create_root(mos, ddobjp, tx); | |
| 1544 | 577 VERIFY(0 == dsl_dir_open_obj(dp, *ddobjp, NULL, FTAG, &dd)); |
| 789 | 578 |
|
928
36d72fe4da29
6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents:
885
diff
changeset
|
579 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
|
36d72fe4da29
6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents:
885
diff
changeset
|
580 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 581 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 582 dmu_buf_will_dirty(dbuf, tx); |
| 583 dsphys = dbuf->db_data; | |
| 584 dsphys->ds_dir_obj = dd->dd_object; | |
| 585 dsphys->ds_fsid_guid = unique_create(); | |
| 586 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 587 sizeof (dsphys->ds_guid)); | |
| 588 dsphys->ds_snapnames_zapobj = | |
|
885
d925b21dba78
6347493 tar of 25K empty directory entries in ZFS takes 30+ seconds ...
ahrens
parents:
789
diff
changeset
|
589 zap_create(mos, DMU_OT_DSL_DS_SNAP_MAP, DMU_OT_NONE, 0, tx); |
| 789 | 590 dsphys->ds_creation_time = gethrestime_sec(); |
| 591 dsphys->ds_creation_txg = tx->tx_txg; | |
| 592 dsphys->ds_deadlist_obj = | |
| 593 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 594 dmu_buf_rele(dbuf, FTAG); |
| 789 | 595 |
| 596 dmu_buf_will_dirty(dd->dd_dbuf, tx); | |
| 597 dd->dd_phys->dd_head_dataset_obj = dsobj; | |
| 598 dsl_dir_close(dd, FTAG); | |
| 599 | |
| 1544 | 600 VERIFY(0 == |
| 601 dsl_dataset_open_obj(dp, dsobj, NULL, DS_MODE_NONE, FTAG, &ds)); | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
602 (void) dmu_objset_create_impl(dp->dp_spa, ds, |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
603 &ds->ds_phys->ds_bp, DMU_OST_ZFS, tx); |
| 789 | 604 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); |
| 605 } | |
| 606 | |
| 2199 | 607 uint64_t |
| 5367 | 608 dsl_dataset_create_sync_impl(dsl_dir_t *dd, dsl_dataset_t *origin, dmu_tx_t *tx) |
| 789 | 609 { |
| 5367 | 610 dsl_pool_t *dp = dd->dd_pool; |
| 789 | 611 dmu_buf_t *dbuf; |
| 612 dsl_dataset_phys_t *dsphys; | |
| 5367 | 613 uint64_t dsobj; |
| 789 | 614 objset_t *mos = dp->dp_meta_objset; |
| 615 | |
| 5367 | 616 ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp); |
| 617 ASSERT(origin == NULL || origin->ds_phys->ds_num_children > 0); | |
| 789 | 618 ASSERT(dmu_tx_is_syncing(tx)); |
| 5367 | 619 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0); |
| 789 | 620 |
|
928
36d72fe4da29
6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents:
885
diff
changeset
|
621 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
|
36d72fe4da29
6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents:
885
diff
changeset
|
622 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 623 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 624 dmu_buf_will_dirty(dbuf, tx); |
| 625 dsphys = dbuf->db_data; | |
| 626 dsphys->ds_dir_obj = dd->dd_object; | |
| 627 dsphys->ds_fsid_guid = unique_create(); | |
| 628 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 629 sizeof (dsphys->ds_guid)); | |
| 630 dsphys->ds_snapnames_zapobj = | |
|
885
d925b21dba78
6347493 tar of 25K empty directory entries in ZFS takes 30+ seconds ...
ahrens
parents:
789
diff
changeset
|
631 zap_create(mos, DMU_OT_DSL_DS_SNAP_MAP, DMU_OT_NONE, 0, tx); |
| 789 | 632 dsphys->ds_creation_time = gethrestime_sec(); |
| 633 dsphys->ds_creation_txg = tx->tx_txg; | |
| 634 dsphys->ds_deadlist_obj = | |
| 635 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 5367 | 636 if (origin) { |
| 637 dsphys->ds_prev_snap_obj = origin->ds_object; | |
| 789 | 638 dsphys->ds_prev_snap_txg = |
| 5367 | 639 origin->ds_phys->ds_creation_txg; |
| 789 | 640 dsphys->ds_used_bytes = |
| 5367 | 641 origin->ds_phys->ds_used_bytes; |
| 789 | 642 dsphys->ds_compressed_bytes = |
| 5367 | 643 origin->ds_phys->ds_compressed_bytes; |
| 789 | 644 dsphys->ds_uncompressed_bytes = |
| 5367 | 645 origin->ds_phys->ds_uncompressed_bytes; |
| 646 dsphys->ds_bp = origin->ds_phys->ds_bp; | |
| 789 | 647 |
| 5367 | 648 dmu_buf_will_dirty(origin->ds_dbuf, tx); |
| 649 origin->ds_phys->ds_num_children++; | |
| 789 | 650 |
| 651 dmu_buf_will_dirty(dd->dd_dbuf, tx); | |
| 5367 | 652 dd->dd_phys->dd_origin_obj = origin->ds_object; |
| 789 | 653 } |
| 1544 | 654 dmu_buf_rele(dbuf, FTAG); |
| 789 | 655 |
| 656 dmu_buf_will_dirty(dd->dd_dbuf, tx); | |
| 657 dd->dd_phys->dd_head_dataset_obj = dsobj; | |
| 5367 | 658 |
| 659 return (dsobj); | |
| 660 } | |
| 661 | |
| 662 uint64_t | |
| 663 dsl_dataset_create_sync(dsl_dir_t *pdd, | |
| 664 const char *lastname, dsl_dataset_t *origin, cred_t *cr, dmu_tx_t *tx) | |
| 665 { | |
| 666 dsl_pool_t *dp = pdd->dd_pool; | |
| 667 uint64_t dsobj, ddobj; | |
| 668 dsl_dir_t *dd; | |
| 669 | |
| 670 ASSERT(lastname[0] != '@'); | |
| 671 | |
| 672 ddobj = dsl_dir_create_sync(pdd, lastname, tx); | |
| 673 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd)); | |
| 674 | |
| 675 dsobj = dsl_dataset_create_sync_impl(dd, origin, tx); | |
| 676 | |
| 677 dsl_deleg_set_create_perms(dd, tx, cr); | |
| 678 | |
| 789 | 679 dsl_dir_close(dd, FTAG); |
| 680 | |
| 2199 | 681 return (dsobj); |
| 682 } | |
| 683 | |
| 684 struct destroyarg { | |
| 685 dsl_sync_task_group_t *dstg; | |
| 686 char *snapname; | |
| 687 char *failed; | |
| 688 }; | |
| 689 | |
| 690 static int | |
| 691 dsl_snapshot_destroy_one(char *name, void *arg) | |
| 692 { | |
| 693 struct destroyarg *da = arg; | |
| 694 dsl_dataset_t *ds; | |
| 695 char *cp; | |
| 696 int err; | |
| 697 | |
| 698 (void) strcat(name, "@"); | |
| 699 (void) strcat(name, da->snapname); | |
| 700 err = dsl_dataset_open(name, | |
| 701 DS_MODE_EXCLUSIVE | DS_MODE_READONLY | DS_MODE_INCONSISTENT, | |
| 4007 | 702 da->dstg, &ds); |
| 2199 | 703 cp = strchr(name, '@'); |
| 704 *cp = '\0'; | |
| 705 if (err == ENOENT) | |
| 706 return (0); | |
| 707 if (err) { | |
| 708 (void) strcpy(da->failed, name); | |
| 709 return (err); | |
| 710 } | |
| 711 | |
| 712 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check, | |
| 4007 | 713 dsl_dataset_destroy_sync, ds, da->dstg, 0); |
| 789 | 714 return (0); |
| 715 } | |
| 716 | |
| 2199 | 717 /* |
| 718 * Destroy 'snapname' in all descendants of 'fsname'. | |
| 719 */ | |
| 720 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy | |
| 721 int | |
| 722 dsl_snapshots_destroy(char *fsname, char *snapname) | |
| 723 { | |
| 724 int err; | |
| 725 struct destroyarg da; | |
| 726 dsl_sync_task_t *dst; | |
| 727 spa_t *spa; | |
| 728 | |
|
4603
c7840c367d00
6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents:
4577
diff
changeset
|
729 err = spa_open(fsname, &spa, FTAG); |
| 2199 | 730 if (err) |
| 731 return (err); | |
| 732 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); | |
| 733 da.snapname = snapname; | |
| 734 da.failed = fsname; | |
| 735 | |
| 736 err = dmu_objset_find(fsname, | |
| 2417 | 737 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN); |
| 2199 | 738 |
| 739 if (err == 0) | |
| 740 err = dsl_sync_task_group_wait(da.dstg); | |
| 741 | |
| 742 for (dst = list_head(&da.dstg->dstg_tasks); dst; | |
| 743 dst = list_next(&da.dstg->dstg_tasks, dst)) { | |
| 744 dsl_dataset_t *ds = dst->dst_arg1; | |
| 745 if (dst->dst_err) { | |
| 746 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
|
747 *strchr(fsname, '@') = '\0'; |
| 2199 | 748 } |
| 749 /* | |
| 750 * If it was successful, destroy_sync would have | |
| 751 * closed the ds | |
| 752 */ | |
| 753 if (err) | |
| 4007 | 754 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, da.dstg); |
| 2199 | 755 } |
| 756 | |
| 757 dsl_sync_task_group_destroy(da.dstg); | |
| 758 spa_close(spa, FTAG); | |
| 759 return (err); | |
| 760 } | |
| 761 | |
| 5367 | 762 /* |
| 763 * ds must be opened EXCLUSIVE or PRIMARY. on return (whether | |
| 764 * successful or not), ds will be closed and caller can no longer | |
| 765 * dereference it. | |
| 766 */ | |
| 789 | 767 int |
| 5367 | 768 dsl_dataset_destroy(dsl_dataset_t *ds, void *tag) |
| 789 | 769 { |
| 770 int err; | |
| 2199 | 771 dsl_sync_task_group_t *dstg; |
| 772 objset_t *os; | |
| 789 | 773 dsl_dir_t *dd; |
| 2199 | 774 uint64_t obj; |
| 775 | |
| 5367 | 776 if (ds->ds_open_refcount != DS_REF_MAX) { |
| 777 if (dsl_dataset_tryupgrade(ds, DS_MODE_PRIMARY, | |
| 778 DS_MODE_EXCLUSIVE) == 0) { | |
| 779 dsl_dataset_close(ds, DS_MODE_PRIMARY, tag); | |
| 780 return (EBUSY); | |
| 781 } | |
| 782 } | |
| 783 | |
| 784 if (dsl_dataset_is_snapshot(ds)) { | |
| 2199 | 785 /* Destroying a snapshot is simpler */ |
| 786 err = dsl_sync_task_do(ds->ds_dir->dd_pool, | |
| 787 dsl_dataset_destroy_check, dsl_dataset_destroy_sync, | |
| 5367 | 788 ds, tag, 0); |
| 789 goto out; | |
| 2199 | 790 } |
| 791 | |
| 792 dd = ds->ds_dir; | |
| 789 | 793 |
| 2199 | 794 /* |
| 795 * Check for errors and mark this ds as inconsistent, in | |
| 796 * case we crash while freeing the objects. | |
| 797 */ | |
| 798 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check, | |
| 799 dsl_dataset_destroy_begin_sync, ds, NULL, 0); | |
| 5367 | 800 if (err) |
| 801 goto out; | |
| 802 | |
| 803 err = dmu_objset_open_ds(ds, DMU_OST_ANY, &os); | |
| 804 if (err) | |
| 805 goto out; | |
| 2199 | 806 |
| 807 /* | |
| 808 * remove the objects in open context, so that we won't | |
| 809 * have too much to do in syncing context. | |
| 810 */ | |
|
3025
4e5ee8301d84
6424466 "panic: data after EOF" when unmounting abused pool
ahrens
parents:
2885
diff
changeset
|
811 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
|
812 ds->ds_phys->ds_prev_snap_txg)) { |
| 2199 | 813 dmu_tx_t *tx = dmu_tx_create(os); |
| 814 dmu_tx_hold_free(tx, obj, 0, DMU_OBJECT_END); | |
| 815 dmu_tx_hold_bonus(tx, obj); | |
| 816 err = dmu_tx_assign(tx, TXG_WAIT); | |
| 817 if (err) { | |
| 818 /* | |
| 819 * Perhaps there is not enough disk | |
| 820 * space. Just deal with it from | |
| 821 * dsl_dataset_destroy_sync(). | |
| 822 */ | |
| 823 dmu_tx_abort(tx); | |
| 824 continue; | |
| 825 } | |
| 826 VERIFY(0 == dmu_object_free(os, obj, tx)); | |
| 827 dmu_tx_commit(tx); | |
| 828 } | |
| 829 /* Make sure it's not dirty before we finish destroying it. */ | |
| 830 txg_wait_synced(dd->dd_pool, 0); | |
| 831 | |
| 832 dmu_objset_close(os); | |
| 833 if (err != ESRCH) | |
| 5367 | 834 goto out; |
| 2199 | 835 |
| 5367 | 836 if (ds->ds_user_ptr) { |
| 837 ds->ds_user_evict_func(ds, ds->ds_user_ptr); | |
| 838 ds->ds_user_ptr = NULL; | |
| 839 } | |
| 840 | |
| 841 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); | |
| 842 err = dsl_dir_open_obj(dd->dd_pool, dd->dd_object, NULL, FTAG, &dd); | |
| 843 rw_exit(&dd->dd_pool->dp_config_rwlock); | |
| 844 | |
| 1544 | 845 if (err) |
| 5367 | 846 goto out; |
| 789 | 847 |
| 2199 | 848 /* |
| 849 * Blow away the dsl_dir + head dataset. | |
| 850 */ | |
| 851 dstg = dsl_sync_task_group_create(ds->ds_dir->dd_pool); | |
| 852 dsl_sync_task_create(dstg, dsl_dataset_destroy_check, | |
| 5367 | 853 dsl_dataset_destroy_sync, ds, tag, 0); |
| 2199 | 854 dsl_sync_task_create(dstg, dsl_dir_destroy_check, |
| 855 dsl_dir_destroy_sync, dd, FTAG, 0); | |
| 856 err = dsl_sync_task_group_wait(dstg); | |
| 857 dsl_sync_task_group_destroy(dstg); | |
| 858 /* if it is successful, *destroy_sync will close the ds+dd */ | |
| 5367 | 859 if (err) |
| 2199 | 860 dsl_dir_close(dd, FTAG); |
| 5367 | 861 out: |
| 862 if (err) | |
| 863 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, tag); | |
| 789 | 864 return (err); |
| 865 } | |
| 866 | |
| 867 int | |
| 5367 | 868 dsl_dataset_rollback(dsl_dataset_t *ds, dmu_objset_type_t ost) |
| 789 | 869 { |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
870 ASSERT3U(ds->ds_open_refcount, ==, DS_REF_MAX); |
| 5367 | 871 |
| 2199 | 872 return (dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 873 dsl_dataset_rollback_check, dsl_dataset_rollback_sync, | |
| 5367 | 874 ds, &ost, 0)); |
| 789 | 875 } |
| 876 | |
| 877 void * | |
| 878 dsl_dataset_set_user_ptr(dsl_dataset_t *ds, | |
| 879 void *p, dsl_dataset_evict_func_t func) | |
| 880 { | |
| 881 void *old; | |
| 882 | |
| 883 mutex_enter(&ds->ds_lock); | |
| 884 old = ds->ds_user_ptr; | |
| 885 if (old == NULL) { | |
| 886 ds->ds_user_ptr = p; | |
| 887 ds->ds_user_evict_func = func; | |
| 888 } | |
| 889 mutex_exit(&ds->ds_lock); | |
| 890 return (old); | |
| 891 } | |
| 892 | |
| 893 void * | |
| 894 dsl_dataset_get_user_ptr(dsl_dataset_t *ds) | |
| 895 { | |
| 896 return (ds->ds_user_ptr); | |
| 897 } | |
| 898 | |
| 899 | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
900 blkptr_t * |
|
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
901 dsl_dataset_get_blkptr(dsl_dataset_t *ds) |
| 789 | 902 { |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
903 return (&ds->ds_phys->ds_bp); |
| 789 | 904 } |
| 905 | |
| 906 void | |
| 907 dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx) | |
| 908 { | |
| 909 ASSERT(dmu_tx_is_syncing(tx)); | |
| 910 /* If it's the meta-objset, set dp_meta_rootbp */ | |
| 911 if (ds == NULL) { | |
| 912 tx->tx_pool->dp_meta_rootbp = *bp; | |
| 913 } else { | |
| 914 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 915 ds->ds_phys->ds_bp = *bp; | |
| 916 } | |
| 917 } | |
| 918 | |
| 919 spa_t * | |
| 920 dsl_dataset_get_spa(dsl_dataset_t *ds) | |
| 921 { | |
| 922 return (ds->ds_dir->dd_pool->dp_spa); | |
| 923 } | |
| 924 | |
| 925 void | |
| 926 dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx) | |
| 927 { | |
| 928 dsl_pool_t *dp; | |
| 929 | |
| 930 if (ds == NULL) /* this is the meta-objset */ | |
| 931 return; | |
| 932 | |
| 933 ASSERT(ds->ds_user_ptr != NULL); | |
| 2885 | 934 |
| 935 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 936 panic("dirtying snapshot!"); | |
| 789 | 937 |
| 938 dp = ds->ds_dir->dd_pool; | |
| 939 | |
| 940 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) { | |
| 941 /* up the hold count until we can be written out */ | |
| 942 dmu_buf_add_ref(ds->ds_dbuf, ds); | |
| 943 } | |
| 944 } | |
| 945 | |
| 946 struct killarg { | |
| 947 uint64_t *usedp; | |
| 948 uint64_t *compressedp; | |
| 949 uint64_t *uncompressedp; | |
| 950 zio_t *zio; | |
| 951 dmu_tx_t *tx; | |
| 952 }; | |
| 953 | |
| 954 static int | |
| 955 kill_blkptr(traverse_blk_cache_t *bc, spa_t *spa, void *arg) | |
| 956 { | |
| 957 struct killarg *ka = arg; | |
| 958 blkptr_t *bp = &bc->bc_blkptr; | |
| 959 | |
| 960 ASSERT3U(bc->bc_errno, ==, 0); | |
| 961 | |
| 962 /* | |
| 963 * Since this callback is not called concurrently, no lock is | |
| 964 * needed on the accounting values. | |
| 965 */ | |
| 2082 | 966 *ka->usedp += bp_get_dasize(spa, bp); |
| 789 | 967 *ka->compressedp += BP_GET_PSIZE(bp); |
| 968 *ka->uncompressedp += BP_GET_UCSIZE(bp); | |
| 969 /* XXX check for EIO? */ | |
| 970 (void) arc_free(ka->zio, spa, ka->tx->tx_txg, bp, NULL, NULL, | |
| 971 ARC_NOWAIT); | |
| 972 return (0); | |
| 973 } | |
| 974 | |
| 975 /* ARGSUSED */ | |
| 2199 | 976 static int |
| 977 dsl_dataset_rollback_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 789 | 978 { |
| 2199 | 979 dsl_dataset_t *ds = arg1; |
| 5367 | 980 dmu_objset_type_t *ost = arg2; |
| 789 | 981 |
| 2199 | 982 /* |
| 5367 | 983 * We can only roll back to emptyness if it is a ZPL objset. |
| 2199 | 984 */ |
| 5367 | 985 if (*ost != DMU_OST_ZFS && ds->ds_phys->ds_prev_snap_txg == 0) |
| 789 | 986 return (EINVAL); |
| 987 | |
| 2199 | 988 /* |
| 989 * This must not be a snapshot. | |
| 990 */ | |
| 991 if (ds->ds_phys->ds_next_snap_obj != 0) | |
| 992 return (EINVAL); | |
| 789 | 993 |
| 994 /* | |
| 995 * If we made changes this txg, traverse_dsl_dataset won't find | |
| 996 * them. Try again. | |
| 997 */ | |
| 2199 | 998 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 999 return (EAGAIN); |
| 2199 | 1000 |
| 1001 return (0); | |
| 1002 } | |
| 789 | 1003 |
| 2199 | 1004 /* ARGSUSED */ |
| 1005 static void | |
| 4543 | 1006 dsl_dataset_rollback_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1007 { |
| 1008 dsl_dataset_t *ds = arg1; | |
| 5367 | 1009 dmu_objset_type_t *ost = arg2; |
| 2199 | 1010 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 789 | 1011 |
| 1012 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1013 | |
|
4967
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1014 /* |
|
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1015 * Before the roll back destroy the zil. |
|
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1016 */ |
|
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1017 if (ds->ds_user_ptr != NULL) { |
|
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1018 zil_rollback_destroy( |
|
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1019 ((objset_impl_t *)ds->ds_user_ptr)->os_zil, tx); |
| 5367 | 1020 |
| 1021 /* | |
| 1022 * We need to make sure that the objset_impl_t is reopened after | |
| 1023 * we do the rollback, otherwise it will have the wrong | |
| 1024 * objset_phys_t. Normally this would happen when this | |
| 1025 * DS_MODE_EXCLUSIVE dataset-open is closed, thus causing the | |
| 1026 * dataset to be immediately evicted. But when doing "zfs recv | |
| 1027 * -F", we reopen the objset before that, so that there is no | |
| 1028 * window where the dataset is closed and inconsistent. | |
| 1029 */ | |
| 1030 ds->ds_user_evict_func(ds, ds->ds_user_ptr); | |
| 1031 ds->ds_user_ptr = NULL; | |
|
4967
8d0de61ff354
6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to
perrin
parents:
4935
diff
changeset
|
1032 } |
|
4935
c80bf0e6f4aa
6534949 Stale need for range locking comment in zvol.c
perrin
parents:
4787
diff
changeset
|
1033 |
| 789 | 1034 /* Zero out the deadlist. */ |
| 1035 bplist_close(&ds->ds_deadlist); | |
| 1036 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1037 ds->ds_phys->ds_deadlist_obj = | |
| 1038 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1039 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1040 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1041 |
| 1042 { | |
| 1043 /* Free blkptrs that we gave birth to */ | |
| 1044 zio_t *zio; | |
| 1045 uint64_t used = 0, compressed = 0, uncompressed = 0; | |
| 1046 struct killarg ka; | |
| 1047 | |
| 1048 zio = zio_root(tx->tx_pool->dp_spa, NULL, NULL, | |
| 1049 ZIO_FLAG_MUSTSUCCEED); | |
| 1050 ka.usedp = &used; | |
| 1051 ka.compressedp = &compressed; | |
| 1052 ka.uncompressedp = &uncompressed; | |
| 1053 ka.zio = zio; | |
| 1054 ka.tx = tx; | |
| 1055 (void) traverse_dsl_dataset(ds, ds->ds_phys->ds_prev_snap_txg, | |
| 1056 ADVANCE_POST, kill_blkptr, &ka); | |
| 1057 (void) zio_wait(zio); | |
| 1058 | |
| 2199 | 1059 dsl_dir_diduse_space(ds->ds_dir, |
| 789 | 1060 -used, -compressed, -uncompressed, tx); |
| 1061 } | |
| 1062 | |
| 5367 | 1063 if (ds->ds_prev) { |
| 1064 /* Change our contents to that of the prev snapshot */ | |
| 1065 ASSERT3U(ds->ds_prev->ds_object, ==, | |
| 1066 ds->ds_phys->ds_prev_snap_obj); | |
| 1067 ds->ds_phys->ds_bp = ds->ds_prev->ds_phys->ds_bp; | |
| 1068 ds->ds_phys->ds_used_bytes = | |
| 1069 ds->ds_prev->ds_phys->ds_used_bytes; | |
| 1070 ds->ds_phys->ds_compressed_bytes = | |
| 1071 ds->ds_prev->ds_phys->ds_compressed_bytes; | |
| 1072 ds->ds_phys->ds_uncompressed_bytes = | |
| 1073 ds->ds_prev->ds_phys->ds_uncompressed_bytes; | |
| 1074 ds->ds_phys->ds_flags = ds->ds_prev->ds_phys->ds_flags; | |
| 1075 ds->ds_phys->ds_unique_bytes = 0; | |
| 789 | 1076 |
| 5367 | 1077 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { |
| 1078 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 1079 ds->ds_prev->ds_phys->ds_unique_bytes = 0; | |
| 1080 } | |
| 1081 } else { | |
| 1082 /* Zero out our contents, recreate objset */ | |
| 1083 bzero(&ds->ds_phys->ds_bp, sizeof (blkptr_t)); | |
| 1084 ds->ds_phys->ds_used_bytes = 0; | |
| 1085 ds->ds_phys->ds_compressed_bytes = 0; | |
| 1086 ds->ds_phys->ds_uncompressed_bytes = 0; | |
| 1087 ds->ds_phys->ds_flags = 0; | |
| 1088 ds->ds_phys->ds_unique_bytes = 0; | |
| 1089 (void) dmu_objset_create_impl(ds->ds_dir->dd_pool->dp_spa, ds, | |
| 1090 &ds->ds_phys->ds_bp, *ost, tx); | |
|
2532
752725c22841
6448999 panic: used == ds->ds_phys->ds_unique_bytes
ahrens
parents:
2417
diff
changeset
|
1091 } |
| 4543 | 1092 |
| 1093 spa_history_internal_log(LOG_DS_ROLLBACK, ds->ds_dir->dd_pool->dp_spa, | |
| 1094 tx, cr, "dataset = %llu", ds->ds_object); | |
| 789 | 1095 } |
| 1096 | |
|
1731
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1097 /* ARGSUSED */ |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1098 static int |
| 2199 | 1099 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
|
1100 { |
| 2199 | 1101 dsl_dataset_t *ds = arg1; |
| 5367 | 1102 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
| 1103 uint64_t count; | |
| 1104 int err; | |
|
1731
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1105 |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1106 /* |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1107 * 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
|
1108 * (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
|
1109 * from.) |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1110 */ |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1111 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
|
1112 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
|
1113 return (EINVAL); |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1114 |
| 5367 | 1115 /* |
| 1116 * This is really a dsl_dir thing, but check it here so that | |
| 1117 * we'll be less likely to leave this dataset inconsistent & | |
| 1118 * nearly destroyed. | |
| 1119 */ | |
| 1120 err = zap_count(mos, ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count); | |
| 1121 if (err) | |
| 1122 return (err); | |
| 1123 if (count != 0) | |
| 1124 return (EEXIST); | |
| 1125 | |
|
1731
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1126 return (0); |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1127 } |
|
1efa8b3d1296
6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train
bonwick
parents:
1544
diff
changeset
|
1128 |
| 2199 | 1129 /* ARGSUSED */ |
| 1130 static void | |
| 4543 | 1131 dsl_dataset_destroy_begin_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1132 { |
| 2199 | 1133 dsl_dataset_t *ds = arg1; |
| 4543 | 1134 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
| 789 | 1135 |
| 2199 | 1136 /* Mark it as inconsistent on-disk, in case we crash */ |
| 1137 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1138 ds->ds_phys->ds_flags |= DS_FLAG_INCONSISTENT; | |
| 4543 | 1139 |
| 1140 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx, | |
| 1141 cr, "dataset = %llu", ds->ds_object); | |
| 2199 | 1142 } |
| 789 | 1143 |
| 2199 | 1144 /* ARGSUSED */ |
| 5367 | 1145 int |
| 2199 | 1146 dsl_dataset_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 1147 { | |
| 1148 dsl_dataset_t *ds = arg1; | |
| 789 | 1149 |
| 1150 /* Can't delete a branch point. */ | |
| 2199 | 1151 if (ds->ds_phys->ds_num_children > 1) |
| 1152 return (EEXIST); | |
| 789 | 1153 |
| 1154 /* | |
| 1155 * Can't delete a head dataset if there are snapshots of it. | |
| 1156 * (Except if the only snapshots are from the branch we cloned | |
| 1157 * from.) | |
| 1158 */ | |
| 1159 if (ds->ds_prev != NULL && | |
| 2199 | 1160 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) |
| 789 | 1161 return (EINVAL); |
| 1162 | |
| 1163 /* | |
| 1164 * If we made changes this txg, traverse_dsl_dataset won't find | |
| 1165 * them. Try again. | |
| 1166 */ | |
| 2199 | 1167 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg) |
| 789 | 1168 return (EAGAIN); |
| 2199 | 1169 |
| 1170 /* XXX we should do some i/o error checking... */ | |
| 1171 return (0); | |
| 1172 } | |
| 1173 | |
| 5367 | 1174 void |
| 4543 | 1175 dsl_dataset_destroy_sync(void *arg1, void *tag, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 1176 { |
| 1177 dsl_dataset_t *ds = arg1; | |
| 1178 uint64_t used = 0, compressed = 0, uncompressed = 0; | |
| 1179 zio_t *zio; | |
| 1180 int err; | |
| 1181 int after_branch_point = FALSE; | |
| 1182 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 1183 objset_t *mos = dp->dp_meta_objset; | |
| 1184 dsl_dataset_t *ds_prev = NULL; | |
| 1185 uint64_t obj; | |
| 1186 | |
|
3444
dc160a70a50d
6410433 'zpool status -v' would be more useful with filenames
ek110237
parents:
3025
diff
changeset
|
1187 ASSERT3U(ds->ds_open_refcount, ==, DS_REF_MAX); |
| 2199 | 1188 ASSERT3U(ds->ds_phys->ds_num_children, <=, 1); |
| 1189 ASSERT(ds->ds_prev == NULL || | |
| 1190 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object); | |
| 1191 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg); | |
| 1192 | |
| 1193 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); | |
| 1194 | |
| 1195 obj = ds->ds_object; | |
| 789 | 1196 |
| 1197 if (ds->ds_phys->ds_prev_snap_obj != 0) { | |
| 1198 if (ds->ds_prev) { | |
| 1199 ds_prev = ds->ds_prev; | |
| 1200 } else { | |
| 2199 | 1201 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 789 | 1202 ds->ds_phys->ds_prev_snap_obj, NULL, |
| 2199 | 1203 DS_MODE_NONE, FTAG, &ds_prev)); |
| 789 | 1204 } |
| 1205 after_branch_point = | |
| 1206 (ds_prev->ds_phys->ds_next_snap_obj != obj); | |
| 1207 | |
| 1208 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx); | |
| 1209 if (after_branch_point && | |
| 1210 ds->ds_phys->ds_next_snap_obj == 0) { | |
| 1211 /* This clone is toast. */ | |
| 1212 ASSERT(ds_prev->ds_phys->ds_num_children > 1); | |
| 1213 ds_prev->ds_phys->ds_num_children--; | |
| 1214 } else if (!after_branch_point) { | |
| 1215 ds_prev->ds_phys->ds_next_snap_obj = | |
| 1216 ds->ds_phys->ds_next_snap_obj; | |
| 1217 } | |
| 1218 } | |
| 1219 | |
| 1220 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); | |
| 1221 | |
| 1222 if (ds->ds_phys->ds_next_snap_obj != 0) { | |
| 2199 | 1223 blkptr_t bp; |
| 789 | 1224 dsl_dataset_t *ds_next; |
| 1225 uint64_t itor = 0; | |
| 1226 | |
| 1227 spa_scrub_restart(dp->dp_spa, tx->tx_txg); | |
| 1228 | |
| 2199 | 1229 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 1544 | 1230 ds->ds_phys->ds_next_snap_obj, NULL, |
| 1231 DS_MODE_NONE, FTAG, &ds_next)); | |
| 789 | 1232 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj); |
| 1233 | |
| 1234 dmu_buf_will_dirty(ds_next->ds_dbuf, tx); | |
| 1235 ds_next->ds_phys->ds_prev_snap_obj = | |
| 1236 ds->ds_phys->ds_prev_snap_obj; | |
| 1237 ds_next->ds_phys->ds_prev_snap_txg = | |
| 1238 ds->ds_phys->ds_prev_snap_txg; | |
| 1239 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, | |
| 1240 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0); | |
| 1241 | |
| 1242 /* | |
| 1243 * Transfer to our deadlist (which will become next's | |
| 1244 * new deadlist) any entries from next's current | |
| 1245 * deadlist which were born before prev, and free the | |
| 1246 * other entries. | |
| 1247 * | |
| 1248 * XXX we're doing this long task with the config lock held | |
| 1249 */ | |
| 1250 while (bplist_iterate(&ds_next->ds_deadlist, &itor, | |
| 1251 &bp) == 0) { | |
| 1252 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) { | |
| 1544 | 1253 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, |
| 1254 &bp, tx)); | |
| 789 | 1255 if (ds_prev && !after_branch_point && |
| 1256 bp.blk_birth > | |
| 1257 ds_prev->ds_phys->ds_prev_snap_txg) { | |
| 1258 ds_prev->ds_phys->ds_unique_bytes += | |
| 2082 | 1259 bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1260 } |
| 1261 } else { | |
| 2082 | 1262 used += bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1263 compressed += BP_GET_PSIZE(&bp); |
| 1264 uncompressed += BP_GET_UCSIZE(&bp); | |
| 1265 /* XXX check return value? */ | |
| 1266 (void) arc_free(zio, dp->dp_spa, tx->tx_txg, | |
| 1267 &bp, NULL, NULL, ARC_NOWAIT); | |
| 1268 } | |
| 1269 } | |
| 1270 | |
| 1271 /* free next's deadlist */ | |
| 1272 bplist_close(&ds_next->ds_deadlist); | |
| 1273 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx); | |
| 1274 | |
| 1275 /* set next's deadlist to our deadlist */ | |
| 1276 ds_next->ds_phys->ds_deadlist_obj = | |
| 1277 ds->ds_phys->ds_deadlist_obj; | |
| 1544 | 1278 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos, |
| 1279 ds_next->ds_phys->ds_deadlist_obj)); | |
| 789 | 1280 ds->ds_phys->ds_deadlist_obj = 0; |
| 1281 | |
| 1282 if (ds_next->ds_phys->ds_next_snap_obj != 0) { | |
| 1283 /* | |
| 1284 * Update next's unique to include blocks which | |
| 1285 * were previously shared by only this snapshot | |
| 1286 * and it. Those blocks will be born after the | |
| 1287 * prev snap and before this snap, and will have | |
| 1288 * died after the next snap and before the one | |
| 1289 * after that (ie. be on the snap after next's | |
| 1290 * deadlist). | |
| 1291 * | |
| 1292 * XXX we're doing this long task with the | |
| 1293 * config lock held | |
| 1294 */ | |
| 1295 dsl_dataset_t *ds_after_next; | |
| 1296 | |
| 2199 | 1297 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 789 | 1298 ds_next->ds_phys->ds_next_snap_obj, NULL, |
| 1544 | 1299 DS_MODE_NONE, FTAG, &ds_after_next)); |
| 789 | 1300 itor = 0; |
| 1301 while (bplist_iterate(&ds_after_next->ds_deadlist, | |
| 1302 &itor, &bp) == 0) { | |
| 1303 if (bp.blk_birth > | |
| 1304 ds->ds_phys->ds_prev_snap_txg && | |
| 1305 bp.blk_birth <= | |
| 1306 ds->ds_phys->ds_creation_txg) { | |
| 1307 ds_next->ds_phys->ds_unique_bytes += | |
| 2082 | 1308 bp_get_dasize(dp->dp_spa, &bp); |
| 789 | 1309 } |
| 1310 } | |
| 1311 | |
| 1312 dsl_dataset_close(ds_after_next, DS_MODE_NONE, FTAG); | |
| 1313 ASSERT3P(ds_next->ds_prev, ==, NULL); | |
| 1314 } else { | |
| 1315 /* | |
| 1316 * It would be nice to update the head dataset's | |
| 1317 * unique. To do so we would have to traverse | |
| 1318 * it for blocks born after ds_prev, which is | |
| 1319 * pretty expensive just to maintain something | |
| 1320 * for debugging purposes. | |
| 1321 */ | |
| 1322 ASSERT3P(ds_next->ds_prev, ==, ds); | |
| 1323 dsl_dataset_close(ds_next->ds_prev, DS_MODE_NONE, | |
| 1324 ds_next); | |
| 1325 if (ds_prev) { | |
| 2199 | 1326 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 1544 | 1327 ds->ds_phys->ds_prev_snap_obj, NULL, |
| 1328 DS_MODE_NONE, ds_next, &ds_next->ds_prev)); | |
| 789 | 1329 } else { |
| 1330 ds_next->ds_prev = NULL; | |
| 1331 } | |
| 1332 } | |
| 1333 dsl_dataset_close(ds_next, DS_MODE_NONE, FTAG); | |
| 1334 | |
| 1335 /* | |
| 1336 * NB: unique_bytes is not accurate for head objsets | |
| 1337 * because we don't update it when we delete the most | |
| 1338 * recent snapshot -- see above comment. | |
| 1339 */ | |
| 1340 ASSERT3U(used, ==, ds->ds_phys->ds_unique_bytes); | |
| 1341 } else { | |
| 1342 /* | |
| 1343 * There's no next snapshot, so this is a head dataset. | |
| 1344 * Destroy the deadlist. Unless it's a clone, the | |
| 1345 * deadlist should be empty. (If it's a clone, it's | |
| 1346 * safe to ignore the deadlist contents.) | |
| 1347 */ | |
| 1348 struct killarg ka; | |
| 1349 | |
| 1350 ASSERT(after_branch_point || bplist_empty(&ds->ds_deadlist)); | |
| 1351 bplist_close(&ds->ds_deadlist); | |
| 1352 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx); | |
| 1353 ds->ds_phys->ds_deadlist_obj = 0; | |
| 1354 | |
| 1355 /* | |
| 1356 * Free everything that we point to (that's born after | |
| 1357 * the previous snapshot, if we are a clone) | |
| 1358 * | |
| 1359 * XXX we're doing this long task with the config lock held | |
| 1360 */ | |
| 1361 ka.usedp = &used; | |
| 1362 ka.compressedp = &compressed; | |
| 1363 ka.uncompressedp = &uncompressed; | |
| 1364 ka.zio = zio; | |
| 1365 ka.tx = tx; | |
| 1366 err = traverse_dsl_dataset(ds, ds->ds_phys->ds_prev_snap_txg, | |
| 1367 ADVANCE_POST, kill_blkptr, &ka); | |
| 1368 ASSERT3U(err, ==, 0); | |
| 1369 } | |
| 1370 | |
| 1371 err = zio_wait(zio); | |
| 1372 ASSERT3U(err, ==, 0); | |
| 1373 | |
| 2199 | 1374 dsl_dir_diduse_space(ds->ds_dir, -used, -compressed, -uncompressed, tx); |
| 789 | 1375 |
| 1376 if (ds->ds_phys->ds_snapnames_zapobj) { | |
| 1377 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx); | |
| 1378 ASSERT(err == 0); | |
| 1379 } | |
| 1380 | |
| 2199 | 1381 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == ds->ds_object) { |
| 789 | 1382 /* Erase the link in the dataset */ |
| 2199 | 1383 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx); |
| 1384 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0; | |
| 789 | 1385 /* |
| 1386 * dsl_dir_sync_destroy() called us, they'll destroy | |
| 1387 * the dataset. | |
| 1388 */ | |
| 1389 } else { | |
| 1390 /* remove from snapshot namespace */ | |
| 1391 dsl_dataset_t *ds_head; | |
| 2199 | 1392 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 1393 ds->ds_dir->dd_phys->dd_head_dataset_obj, NULL, | |
| 1544 | 1394 DS_MODE_NONE, FTAG, &ds_head)); |
|
2207
47efcb3433a7
6439370 assertion failures possible in dsl_dataset_destroy_sync()
ahrens
parents:
2199
diff
changeset
|
1395 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 789 | 1396 #ifdef ZFS_DEBUG |
| 1397 { | |
| 1398 uint64_t val; | |
| 1399 err = zap_lookup(mos, | |
| 1400 ds_head->ds_phys->ds_snapnames_zapobj, | |
| 2199 | 1401 ds->ds_snapname, 8, 1, &val); |
| 789 | 1402 ASSERT3U(err, ==, 0); |
| 1403 ASSERT3U(val, ==, obj); | |
| 1404 } | |
| 1405 #endif | |
| 1406 err = zap_remove(mos, ds_head->ds_phys->ds_snapnames_zapobj, | |
| 2199 | 1407 ds->ds_snapname, tx); |
| 789 | 1408 ASSERT(err == 0); |
| 1409 dsl_dataset_close(ds_head, DS_MODE_NONE, FTAG); | |
| 1410 } | |
| 1411 | |
| 1412 if (ds_prev && ds->ds_prev != ds_prev) | |
| 1413 dsl_dataset_close(ds_prev, DS_MODE_NONE, FTAG); | |
| 1414 | |
| 5094 | 1415 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx); |
| 4543 | 1416 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx, |
| 1417 cr, "dataset = %llu", ds->ds_object); | |
| 1418 | |
| 2199 | 1419 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, tag); |
| 1420 VERIFY(0 == dmu_object_free(mos, obj, tx)); | |
| 3912 | 1421 |
| 2199 | 1422 } |
| 1423 | |
| 1424 /* ARGSUSED */ | |
| 1425 int | |
| 1426 dsl_dataset_snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 1427 { | |
| 5367 | 1428 dsl_dataset_t *ds = arg1; |
| 2199 | 1429 const char *snapname = arg2; |
| 1430 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; | |
| 1431 int err; | |
| 1432 uint64_t value; | |
| 789 | 1433 |
| 1434 /* | |
| 2199 | 1435 * We don't allow multiple snapshots of the same txg. If there |
| 1436 * is already one, try again. | |
| 1437 */ | |
| 1438 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg) | |
| 1439 return (EAGAIN); | |
| 1440 | |
| 1441 /* | |
| 1442 * Check for conflicting name snapshot name. | |
| 789 | 1443 */ |
| 2199 | 1444 err = zap_lookup(mos, ds->ds_phys->ds_snapnames_zapobj, |
| 1445 snapname, 8, 1, &value); | |
| 1446 if (err == 0) | |
| 1447 return (EEXIST); | |
| 1448 if (err != ENOENT) | |
| 1449 return (err); | |
| 789 | 1450 |
|
3978
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1451 /* |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1452 * Check that the dataset's name is not too long. Name consists |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1453 * of the dataset's length + 1 for the @-sign + snapshot name's length |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1454 */ |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1455 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN) |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1456 return (ENAMETOOLONG); |
|
2dd668007b7a
6533813 recursive snapshotting resulted in a bad stack overflow
mmusante
parents:
3912
diff
changeset
|
1457 |
| 2199 | 1458 ds->ds_trysnap_txg = tx->tx_txg; |
| 789 | 1459 return (0); |
| 1460 } | |
| 1461 | |
| 2199 | 1462 void |
| 4543 | 1463 dsl_dataset_snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 789 | 1464 { |
| 5367 | 1465 dsl_dataset_t *ds = arg1; |
| 2199 | 1466 const char *snapname = arg2; |
| 1467 dsl_pool_t *dp = ds->ds_dir->dd_pool; | |
| 789 | 1468 dmu_buf_t *dbuf; |
| 1469 dsl_dataset_phys_t *dsphys; | |
| 2199 | 1470 uint64_t dsobj; |
| 789 | 1471 objset_t *mos = dp->dp_meta_objset; |
| 1472 int err; | |
| 1473 | |
| 1474 spa_scrub_restart(dp->dp_spa, tx->tx_txg); | |
| 2199 | 1475 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); |
| 789 | 1476 |
|
928
36d72fe4da29
6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents:
885
diff
changeset
|
1477 dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0, |
|
36d72fe4da29
6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets
tabriz
parents:
885
diff
changeset
|
1478 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx); |
| 1544 | 1479 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf)); |
| 789 | 1480 dmu_buf_will_dirty(dbuf, tx); |
| 1481 dsphys = dbuf->db_data; | |
| 2199 | 1482 dsphys->ds_dir_obj = ds->ds_dir->dd_object; |
| 789 | 1483 dsphys->ds_fsid_guid = unique_create(); |
| 1484 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid, | |
| 1485 sizeof (dsphys->ds_guid)); | |
| 1486 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj; | |
| 1487 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg; | |
| 1488 dsphys->ds_next_snap_obj = ds->ds_object; | |
| 1489 dsphys->ds_num_children = 1; | |
| 1490 dsphys->ds_creation_time = gethrestime_sec(); | |
| 1491 dsphys->ds_creation_txg = tx->tx_txg; | |
| 1492 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj; | |
| 1493 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes; | |
| 1494 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes; | |
| 1495 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes; | |
| 2082 | 1496 dsphys->ds_flags = ds->ds_phys->ds_flags; |
| 789 | 1497 dsphys->ds_bp = ds->ds_phys->ds_bp; |
| 1544 | 1498 dmu_buf_rele(dbuf, FTAG); |
| 789 | 1499 |
| 2199 | 1500 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0); |
| 1501 if (ds->ds_prev) { | |
| 1502 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj == | |
| 789 | 1503 ds->ds_object || |
| 2199 | 1504 ds->ds_prev->ds_phys->ds_num_children > 1); |
| 1505 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) { | |
| 1506 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
| 789 | 1507 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==, |
| 2199 | 1508 ds->ds_prev->ds_phys->ds_creation_txg); |
| 1509 ds->ds_prev->ds_phys->ds_next_snap_obj = dsobj; | |
| 789 | 1510 } |
| 1511 } | |
| 1512 | |
| 1513 bplist_close(&ds->ds_deadlist); | |
| 1514 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1515 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, dsphys->ds_creation_txg); | |
| 1516 ds->ds_phys->ds_prev_snap_obj = dsobj; | |
| 1517 ds->ds_phys->ds_prev_snap_txg = dsphys->ds_creation_txg; | |
| 1518 ds->ds_phys->ds_unique_bytes = 0; | |
| 1519 ds->ds_phys->ds_deadlist_obj = | |
| 1520 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx); | |
| 1544 | 1521 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos, |
| 1522 ds->ds_phys->ds_deadlist_obj)); | |
| 789 | 1523 |
| 1524 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj); | |
| 1525 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj, | |
| 1526 snapname, 8, 1, &dsobj, tx); | |
| 1527 ASSERT(err == 0); | |
| 1528 | |
| 1529 if (ds->ds_prev) | |
| 1530 dsl_dataset_close(ds->ds_prev, DS_MODE_NONE, ds); | |
| 1544 | 1531 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 1532 ds->ds_phys->ds_prev_snap_obj, snapname, | |
| 1533 DS_MODE_NONE, ds, &ds->ds_prev)); | |
| 4543 | 1534 |
| 1535 spa_history_internal_log(LOG_DS_SNAPSHOT, dp->dp_spa, tx, cr, | |
|
4603
c7840c367d00
6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents:
4577
diff
changeset
|
1536 "dataset = %llu", dsobj); |
| 789 | 1537 } |
| 1538 | |
| 1539 void | |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1540 dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx) |
| 789 | 1541 { |
| 1542 ASSERT(dmu_tx_is_syncing(tx)); | |
| 1543 ASSERT(ds->ds_user_ptr != NULL); | |
| 1544 ASSERT(ds->ds_phys->ds_next_snap_obj == 0); | |
| 1545 | |
| 4787 | 1546 /* |
| 1547 * in case we had to change ds_fsid_guid when we opened it, | |
| 1548 * sync it out now. | |
| 1549 */ | |
| 1550 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 1551 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid; | |
| 1552 | |
| 789 | 1553 dsl_dir_dirty(ds->ds_dir, tx); |
|
3547
e396e0a440b1
6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents:
3444
diff
changeset
|
1554 dmu_objset_sync(ds->ds_user_ptr, zio, tx); |
| 789 | 1555 } |
| 1556 | |
| 1557 void | |
| 2885 | 1558 dsl_dataset_stats(dsl_dataset_t *ds, nvlist_t *nv) |
| 789 | 1559 { |
| 2885 | 1560 dsl_dir_stats(ds->ds_dir, nv); |
| 789 | 1561 |
| 2885 | 1562 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION, |
| 1563 ds->ds_phys->ds_creation_time); | |
| 1564 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG, | |
| 1565 ds->ds_phys->ds_creation_txg); | |
| 1566 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFERENCED, | |
| 1567 ds->ds_phys->ds_used_bytes); | |
| 789 | 1568 |
| 1569 if (ds->ds_phys->ds_next_snap_obj) { | |
| 1570 /* | |
| 1571 * This is a snapshot; override the dd's space used with | |
| 2885 | 1572 * our unique space and compression ratio. |
| 789 | 1573 */ |
| 2885 | 1574 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED, |
| 1575 ds->ds_phys->ds_unique_bytes); | |
| 1576 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO, | |
| 1577 ds->ds_phys->ds_compressed_bytes == 0 ? 100 : | |
| 1578 (ds->ds_phys->ds_uncompressed_bytes * 100 / | |
| 1579 ds->ds_phys->ds_compressed_bytes)); | |
| 789 | 1580 } |
| 1581 } | |
| 1582 | |
| 2885 | 1583 void |
| 1584 dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat) | |
| 789 | 1585 { |
| 2885 | 1586 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg; |
| 1587 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT; | |
| 5367 | 1588 stat->dds_guid = ds->ds_phys->ds_guid; |
| 2885 | 1589 if (ds->ds_phys->ds_next_snap_obj) { |
| 1590 stat->dds_is_snapshot = B_TRUE; | |
| 1591 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1; | |
| 1592 } | |
| 1593 | |
| 1594 /* clone origin is really a dsl_dir thing... */ | |
| 5367 | 1595 if (ds->ds_dir->dd_phys->dd_origin_obj) { |
| 2885 | 1596 dsl_dataset_t *ods; |
| 1597 | |
| 1598 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); | |
| 1599 VERIFY(0 == dsl_dataset_open_obj(ds->ds_dir->dd_pool, | |
| 5367 | 1600 ds->ds_dir->dd_phys->dd_origin_obj, |
| 2885 | 1601 NULL, DS_MODE_NONE, FTAG, &ods)); |
| 5367 | 1602 dsl_dataset_name(ods, stat->dds_origin); |
| 2885 | 1603 dsl_dataset_close(ods, DS_MODE_NONE, FTAG); |
| 1604 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); | |
| 1605 } | |
| 1606 } | |
| 1607 | |
| 1608 uint64_t | |
| 1609 dsl_dataset_fsid_guid(dsl_dataset_t *ds) | |
| 1610 { | |
| 4787 | 1611 return (ds->ds_fsid_guid); |
| 2885 | 1612 } |
| 1613 | |
| 1614 void | |
| 1615 dsl_dataset_space(dsl_dataset_t *ds, | |
| 1616 uint64_t *refdbytesp, uint64_t *availbytesp, | |
| 1617 uint64_t *usedobjsp, uint64_t *availobjsp) | |
| 1618 { | |
| 1619 *refdbytesp = ds->ds_phys->ds_used_bytes; | |
| 1620 *availbytesp = dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE); | |
| 1621 *usedobjsp = ds->ds_phys->ds_bp.blk_fill; | |
| 1622 *availobjsp = DN_MAX_OBJECT - *usedobjsp; | |
| 789 | 1623 } |
| 1624 | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1625 boolean_t |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1626 dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds) |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1627 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1628 dsl_pool_t *dp = ds->ds_dir->dd_pool; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1629 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1630 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) || |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1631 dsl_pool_sync_context(dp)); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1632 if (ds->ds_prev == NULL) |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1633 return (B_FALSE); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1634 if (ds->ds_phys->ds_bp.blk_birth > |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1635 ds->ds_prev->ds_phys->ds_creation_txg) |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1636 return (B_TRUE); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1637 return (B_FALSE); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1638 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1639 |
| 2199 | 1640 /* ARGSUSED */ |
| 789 | 1641 static int |
| 2199 | 1642 dsl_dataset_snapshot_rename_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 789 | 1643 { |
| 2199 | 1644 dsl_dataset_t *ds = arg1; |
| 1645 char *newsnapname = arg2; | |
| 1646 dsl_dir_t *dd = ds->ds_dir; | |
| 789 | 1647 objset_t *mos = dd->dd_pool->dp_meta_objset; |
| 2199 | 1648 dsl_dataset_t *hds; |
| 1649 uint64_t val; | |
| 789 | 1650 int err; |
| 1651 | |
| 2199 | 1652 err = dsl_dataset_open_obj(dd->dd_pool, |
| 1653 dd->dd_phys->dd_head_dataset_obj, NULL, DS_MODE_NONE, FTAG, &hds); | |
| 789 | 1654 if (err) |
| 1655 return (err); | |
| 1656 | |
| 2199 | 1657 /* new name better not be in use */ |
| 1658 err = zap_lookup(mos, hds->ds_phys->ds_snapnames_zapobj, | |
| 1659 newsnapname, 8, 1, &val); | |
| 1660 dsl_dataset_close(hds, DS_MODE_NONE, FTAG); | |
| 789 | 1661 |
| 2199 | 1662 if (err == 0) |
| 1663 err = EEXIST; | |
| 1664 else if (err == ENOENT) | |
| 1665 err = 0; | |
| 4007 | 1666 |
| 1667 /* dataset name + 1 for the "@" + the new snapshot name must fit */ | |
| 1668 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN) | |
| 1669 err = ENAMETOOLONG; | |
| 1670 | |
| 2199 | 1671 return (err); |
| 1672 } | |
| 789 | 1673 |
| 2199 | 1674 static void |
| 4543 | 1675 dsl_dataset_snapshot_rename_sync(void *arg1, void *arg2, |
| 1676 cred_t *cr, dmu_tx_t *tx) | |
| 2199 | 1677 { |
| 1678 dsl_dataset_t *ds = arg1; | |
| 4543 | 1679 const char *newsnapname = arg2; |
| 2199 | 1680 dsl_dir_t *dd = ds->ds_dir; |
| 1681 objset_t *mos = dd->dd_pool->dp_meta_objset; | |
| 1682 dsl_dataset_t *hds; | |
| 1683 int err; | |
| 789 | 1684 |
| 2199 | 1685 ASSERT(ds->ds_phys->ds_next_snap_obj != 0); |
| 789 | 1686 |
| 2199 | 1687 VERIFY(0 == dsl_dataset_open_obj(dd->dd_pool, |
| 1688 dd->dd_phys->dd_head_dataset_obj, NULL, DS_MODE_NONE, FTAG, &hds)); | |
| 789 | 1689 |
| 2199 | 1690 VERIFY(0 == dsl_dataset_get_snapname(ds)); |
| 1691 err = zap_remove(mos, hds->ds_phys->ds_snapnames_zapobj, | |
| 1692 ds->ds_snapname, tx); | |
| 789 | 1693 ASSERT3U(err, ==, 0); |
| 2199 | 1694 mutex_enter(&ds->ds_lock); |
| 1695 (void) strcpy(ds->ds_snapname, newsnapname); | |
| 1696 mutex_exit(&ds->ds_lock); | |
| 1697 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj, | |
| 1698 ds->ds_snapname, 8, 1, &ds->ds_object, tx); | |
| 789 | 1699 ASSERT3U(err, ==, 0); |
| 1700 | |
| 4543 | 1701 spa_history_internal_log(LOG_DS_RENAME, dd->dd_pool->dp_spa, tx, |
| 1702 cr, "dataset = %llu", ds->ds_object); | |
| 2199 | 1703 dsl_dataset_close(hds, DS_MODE_NONE, FTAG); |
| 789 | 1704 } |
| 1705 | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1706 struct renamesnaparg { |
| 4007 | 1707 dsl_sync_task_group_t *dstg; |
| 1708 char failed[MAXPATHLEN]; | |
| 1709 char *oldsnap; | |
| 1710 char *newsnap; | |
| 1711 }; | |
| 1712 | |
| 1713 static int | |
| 1714 dsl_snapshot_rename_one(char *name, void *arg) | |
| 1715 { | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1716 struct renamesnaparg *ra = arg; |
| 4007 | 1717 dsl_dataset_t *ds = NULL; |
| 1718 char *cp; | |
| 1719 int err; | |
| 1720 | |
| 1721 cp = name + strlen(name); | |
| 1722 *cp = '@'; | |
| 1723 (void) strcpy(cp + 1, ra->oldsnap); | |
| 4543 | 1724 |
| 1725 /* | |
| 1726 * For recursive snapshot renames the parent won't be changing | |
| 1727 * so we just pass name for both the to/from argument. | |
| 1728 */ | |
| 1729 if (err = zfs_secpolicy_rename_perms(name, name, CRED())) { | |
| 1730 (void) strcpy(ra->failed, name); | |
| 1731 return (err); | |
| 1732 } | |
| 1733 | |
| 4007 | 1734 err = dsl_dataset_open(name, DS_MODE_READONLY | DS_MODE_STANDARD, |
| 1735 ra->dstg, &ds); | |
| 1736 if (err == ENOENT) { | |
| 1737 *cp = '\0'; | |
| 1738 return (0); | |
| 1739 } | |
| 1740 if (err) { | |
| 1741 (void) strcpy(ra->failed, name); | |
| 1742 *cp = '\0'; | |
| 1743 dsl_dataset_close(ds, DS_MODE_STANDARD, ra->dstg); | |
| 1744 return (err); | |
| 1745 } | |
| 1746 | |
| 1747 #ifdef _KERNEL | |
| 1748 /* for all filesystems undergoing rename, we'll need to unmount it */ | |
| 1749 (void) zfs_unmount_snap(name, NULL); | |
| 1750 #endif | |
| 1751 | |
| 1752 *cp = '\0'; | |
| 1753 | |
| 1754 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check, | |
| 1755 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0); | |
| 1756 | |
| 1757 return (0); | |
| 1758 } | |
| 1759 | |
| 1760 static int | |
| 1761 dsl_recursive_rename(char *oldname, const char *newname) | |
| 1762 { | |
| 1763 int err; | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1764 struct renamesnaparg *ra; |
| 4007 | 1765 dsl_sync_task_t *dst; |
| 1766 spa_t *spa; | |
| 1767 char *cp, *fsname = spa_strdup(oldname); | |
| 1768 int len = strlen(oldname); | |
| 1769 | |
| 1770 /* truncate the snapshot name to get the fsname */ | |
| 1771 cp = strchr(fsname, '@'); | |
| 1772 *cp = '\0'; | |
| 1773 | |
|
4603
c7840c367d00
6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups
ahrens
parents:
4577
diff
changeset
|
1774 err = spa_open(fsname, &spa, FTAG); |
| 4007 | 1775 if (err) { |
| 1776 kmem_free(fsname, len + 1); | |
| 1777 return (err); | |
| 1778 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1779 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP); |
| 4007 | 1780 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); |
| 1781 | |
| 1782 ra->oldsnap = strchr(oldname, '@') + 1; | |
| 1783 ra->newsnap = strchr(newname, '@') + 1; | |
| 1784 *ra->failed = '\0'; | |
| 1785 | |
| 1786 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra, | |
| 1787 DS_FIND_CHILDREN); | |
| 1788 kmem_free(fsname, len + 1); | |
| 1789 | |
| 1790 if (err == 0) { | |
| 1791 err = dsl_sync_task_group_wait(ra->dstg); | |
| 1792 } | |
| 1793 | |
| 1794 for (dst = list_head(&ra->dstg->dstg_tasks); dst; | |
| 1795 dst = list_next(&ra->dstg->dstg_tasks, dst)) { | |
| 1796 dsl_dataset_t *ds = dst->dst_arg1; | |
| 1797 if (dst->dst_err) { | |
| 1798 dsl_dir_name(ds->ds_dir, ra->failed); | |
|
4009
1a9b4fbc0d2a
6479884 want 'zfs rename -r' to recursively rename snapshots (fix lint)
mmusante
parents:
4007
diff
changeset
|
1799 (void) strcat(ra->failed, "@"); |
|
1a9b4fbc0d2a
6479884 want 'zfs rename -r' to recursively rename snapshots (fix lint)
mmusante
parents:
4007
diff
changeset
|
1800 (void) strcat(ra->failed, ra->newsnap); |
| 4007 | 1801 } |
| 1802 dsl_dataset_close(ds, DS_MODE_STANDARD, ra->dstg); | |
| 1803 } | |
| 1804 | |
| 4543 | 1805 if (err) |
| 1806 (void) strcpy(oldname, ra->failed); | |
| 4007 | 1807 |
| 1808 dsl_sync_task_group_destroy(ra->dstg); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
1809 kmem_free(ra, sizeof (struct renamesnaparg)); |
| 4007 | 1810 spa_close(spa, FTAG); |
| 1811 return (err); | |
| 1812 } | |
| 1813 | |
|
4569
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1814 static int |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1815 dsl_valid_rename(char *oldname, void *arg) |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1816 { |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1817 int delta = *(int *)arg; |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1818 |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1819 if (strlen(oldname) + delta >= MAXNAMELEN) |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1820 return (ENAMETOOLONG); |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1821 |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1822 return (0); |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1823 } |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1824 |
| 789 | 1825 #pragma weak dmu_objset_rename = dsl_dataset_rename |
| 1826 int | |
| 4007 | 1827 dsl_dataset_rename(char *oldname, const char *newname, |
| 1828 boolean_t recursive) | |
| 789 | 1829 { |
| 1830 dsl_dir_t *dd; | |
| 2199 | 1831 dsl_dataset_t *ds; |
| 789 | 1832 const char *tail; |
| 1833 int err; | |
| 1834 | |
| 2199 | 1835 err = dsl_dir_open(oldname, FTAG, &dd, &tail); |
| 1544 | 1836 if (err) |
| 1837 return (err); | |
| 789 | 1838 if (tail == NULL) { |
|
4569
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1839 int delta = strlen(newname) - strlen(oldname); |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1840 |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1841 /* if we're growing, validate child size lengths */ |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1842 if (delta > 0) |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1843 err = dmu_objset_find(oldname, dsl_valid_rename, |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1844 &delta, DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1845 |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1846 if (!err) |
|
e80d40447f27
6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system
mmusante
parents:
4543
diff
changeset
|
1847 err = dsl_dir_rename(dd, newname); |
| 789 | 1848 dsl_dir_close(dd, FTAG); |
| 1849 return (err); | |
| 1850 } | |
| 1851 if (tail[0] != '@') { | |
| 1852 /* the name ended in a nonexistant component */ | |
| 1853 dsl_dir_close(dd, FTAG); | |
| 1854 return (ENOENT); | |
| 1855 } | |
| 1856 | |
| 2199 | 1857 dsl_dir_close(dd, FTAG); |
| 1858 | |
| 1859 /* new name must be snapshot in same filesystem */ | |
| 1860 tail = strchr(newname, '@'); | |
| 1861 if (tail == NULL) | |
| 1862 return (EINVAL); | |
| 1863 tail++; | |
| 1864 if (strncmp(oldname, newname, tail - newname) != 0) | |
| 1865 return (EXDEV); | |
| 789 | 1866 |
| 4007 | 1867 if (recursive) { |
| 1868 err = dsl_recursive_rename(oldname, newname); | |
| 1869 } else { | |
| 1870 err = dsl_dataset_open(oldname, | |
| 1871 DS_MODE_READONLY | DS_MODE_STANDARD, FTAG, &ds); | |
| 1872 if (err) | |
| 1873 return (err); | |
| 2199 | 1874 |
| 4007 | 1875 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 1876 dsl_dataset_snapshot_rename_check, | |
| 1877 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1); | |
| 2199 | 1878 |
| 4007 | 1879 dsl_dataset_close(ds, DS_MODE_STANDARD, FTAG); |
| 1880 } | |
| 2199 | 1881 |
| 789 | 1882 return (err); |
| 1883 } | |
| 2082 | 1884 |
| 2199 | 1885 struct promotearg { |
| 1886 uint64_t used, comp, uncomp, unique; | |
| 1887 uint64_t newnext_obj, snapnames_obj; | |
| 1888 }; | |
| 1889 | |
| 4543 | 1890 /* ARGSUSED */ |
| 2082 | 1891 static int |
| 2199 | 1892 dsl_dataset_promote_check(void *arg1, void *arg2, dmu_tx_t *tx) |
| 2082 | 1893 { |
| 2199 | 1894 dsl_dataset_t *hds = arg1; |
| 1895 struct promotearg *pa = arg2; | |
| 1896 dsl_dir_t *dd = hds->ds_dir; | |
| 1897 dsl_pool_t *dp = hds->ds_dir->dd_pool; | |
| 5367 | 1898 dsl_dir_t *odd = NULL; |
| 2082 | 1899 dsl_dataset_t *ds = NULL; |
| 5367 | 1900 dsl_dataset_t *origin_ds = NULL; |
| 2082 | 1901 dsl_dataset_t *newnext_ds = NULL; |
| 1902 int err; | |
| 1903 char *name = NULL; | |
| 2199 | 1904 uint64_t itor = 0; |
| 2082 | 1905 blkptr_t bp; |
| 1906 | |
| 2199 | 1907 bzero(pa, sizeof (*pa)); |
| 1908 | |
| 2082 | 1909 /* Check that it is a clone */ |
| 5367 | 1910 if (dd->dd_phys->dd_origin_obj == 0) |
| 2082 | 1911 return (EINVAL); |
| 1912 | |
| 2199 | 1913 /* Since this is so expensive, don't do the preliminary check */ |
| 1914 if (!dmu_tx_is_syncing(tx)) | |
| 1915 return (0); | |
| 1916 | |
| 5367 | 1917 if (err = dsl_dataset_open_obj(dp, dd->dd_phys->dd_origin_obj, |
| 1918 NULL, DS_MODE_EXCLUSIVE, FTAG, &origin_ds)) | |
| 2082 | 1919 goto out; |
| 5367 | 1920 odd = origin_ds->ds_dir; |
| 2199 | 1921 |
| 1922 { | |
| 1923 dsl_dataset_t *phds; | |
| 1924 if (err = dsl_dataset_open_obj(dd->dd_pool, | |
| 5367 | 1925 odd->dd_phys->dd_head_dataset_obj, |
| 2199 | 1926 NULL, DS_MODE_NONE, FTAG, &phds)) |
| 1927 goto out; | |
| 1928 pa->snapnames_obj = phds->ds_phys->ds_snapnames_zapobj; | |
| 1929 dsl_dataset_close(phds, DS_MODE_NONE, FTAG); | |
| 1930 } | |
| 2082 | 1931 |
| 1932 if (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE) { | |
| 1933 err = EXDEV; | |
| 1934 goto out; | |
| 1935 } | |
| 1936 | |
| 5367 | 1937 /* find origin's new next ds */ |
| 2082 | 1938 VERIFY(0 == dsl_dataset_open_obj(dd->dd_pool, hds->ds_object, |
| 1939 NULL, DS_MODE_NONE, FTAG, &newnext_ds)); | |
| 5367 | 1940 while (newnext_ds->ds_phys->ds_prev_snap_obj != origin_ds->ds_object) { |
| 2082 | 1941 dsl_dataset_t *prev; |
| 1942 | |
| 1943 if (err = dsl_dataset_open_obj(dd->dd_pool, | |
| 2199 | 1944 newnext_ds->ds_phys->ds_prev_snap_obj, |
| 1945 NULL, DS_MODE_NONE, FTAG, &prev)) | |
| 2082 | 1946 goto out; |
| 1947 dsl_dataset_close(newnext_ds, DS_MODE_NONE, FTAG); | |
| 1948 newnext_ds = prev; | |
| 1949 } | |
| 2199 | 1950 pa->newnext_obj = newnext_ds->ds_object; |
| 2082 | 1951 |
| 5367 | 1952 /* compute origin's new unique space */ |
| 2082 | 1953 while ((err = bplist_iterate(&newnext_ds->ds_deadlist, |
| 1954 &itor, &bp)) == 0) { | |
| 5367 | 1955 if (bp.blk_birth > origin_ds->ds_phys->ds_prev_snap_txg) |
| 2199 | 1956 pa->unique += bp_get_dasize(dd->dd_pool->dp_spa, &bp); |
| 2082 | 1957 } |
| 1958 if (err != ENOENT) | |
| 1959 goto out; | |
| 1960 | |
| 1961 /* Walk the snapshots that we are moving */ | |
| 1962 name = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 5367 | 1963 ds = origin_ds; |
| 2082 | 1964 /* CONSTCOND */ |
| 1965 while (TRUE) { | |
| 1966 uint64_t val, dlused, dlcomp, dluncomp; | |
| 1967 dsl_dataset_t *prev; | |
| 1968 | |
| 1969 /* Check that the snapshot name does not conflict */ | |
| 1970 dsl_dataset_name(ds, name); | |
| 1971 err = zap_lookup(dd->dd_pool->dp_meta_objset, | |
| 1972 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname, | |
| 1973 8, 1, &val); | |
| 1974 if (err != ENOENT) { | |
| 1975 if (err == 0) | |
| 1976 err = EEXIST; | |
| 1977 goto out; | |
| 1978 } | |
| 1979 | |
| 1980 /* | |
| 1981 * compute space to transfer. Each snapshot gave birth to: | |
| 1982 * (my used) - (prev's used) + (deadlist's used) | |
| 1983 */ | |
| 2199 | 1984 pa->used += ds->ds_phys->ds_used_bytes; |
| 1985 pa->comp += ds->ds_phys->ds_compressed_bytes; | |
| 1986 pa->uncomp += ds->ds_phys->ds_uncompressed_bytes; | |
| 2082 | 1987 |
| 1988 /* If we reach the first snapshot, we're done. */ | |
| 1989 if (ds->ds_phys->ds_prev_snap_obj == 0) | |
| 1990 break; | |
| 1991 | |
| 1992 if (err = bplist_space(&ds->ds_deadlist, | |
| 1993 &dlused, &dlcomp, &dluncomp)) | |
| 1994 goto out; | |
| 1995 if (err = dsl_dataset_open_obj(dd->dd_pool, | |
| 1996 ds->ds_phys->ds_prev_snap_obj, NULL, DS_MODE_EXCLUSIVE, | |
| 1997 FTAG, &prev)) | |
| 1998 goto out; | |
| 2199 | 1999 pa->used += dlused - prev->ds_phys->ds_used_bytes; |
| 2000 pa->comp += dlcomp - prev->ds_phys->ds_compressed_bytes; | |
| 2001 pa->uncomp += dluncomp - prev->ds_phys->ds_uncompressed_bytes; | |
| 2082 | 2002 |
| 2003 /* | |
| 2004 * We could be a clone of a clone. If we reach our | |
| 2005 * parent's branch point, we're done. | |
| 2006 */ | |
| 2007 if (prev->ds_phys->ds_next_snap_obj != ds->ds_object) { | |
| 2008 dsl_dataset_close(prev, DS_MODE_EXCLUSIVE, FTAG); | |
| 2009 break; | |
| 2010 } | |
| 5367 | 2011 if (ds != origin_ds) |
| 2082 | 2012 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, FTAG); |
| 2013 ds = prev; | |
| 2014 } | |
| 2015 | |
| 2016 /* Check that there is enough space here */ | |
| 5367 | 2017 err = dsl_dir_transfer_possible(odd, dd, pa->used); |
| 2199 | 2018 |
| 2019 out: | |
| 5367 | 2020 if (ds && ds != origin_ds) |
| 2199 | 2021 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, FTAG); |
| 5367 | 2022 if (origin_ds) |
| 2023 dsl_dataset_close(origin_ds, DS_MODE_EXCLUSIVE, FTAG); | |
| 2199 | 2024 if (newnext_ds) |
| 2025 dsl_dataset_close(newnext_ds, DS_MODE_NONE, FTAG); | |
| 2026 if (name) | |
| 2027 kmem_free(name, MAXPATHLEN); | |
| 2028 return (err); | |
| 2029 } | |
| 2082 | 2030 |
| 2199 | 2031 static void |
| 4543 | 2032 dsl_dataset_promote_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 2199 | 2033 { |
| 2034 dsl_dataset_t *hds = arg1; | |
| 2035 struct promotearg *pa = arg2; | |
| 2036 dsl_dir_t *dd = hds->ds_dir; | |
| 2037 dsl_pool_t *dp = hds->ds_dir->dd_pool; | |
| 5367 | 2038 dsl_dir_t *odd = NULL; |
| 2039 dsl_dataset_t *ds, *origin_ds; | |
| 2199 | 2040 char *name; |
| 2041 | |
| 5367 | 2042 ASSERT(dd->dd_phys->dd_origin_obj != 0); |
| 2199 | 2043 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE)); |
| 2044 | |
| 5367 | 2045 VERIFY(0 == dsl_dataset_open_obj(dp, dd->dd_phys->dd_origin_obj, |
| 2046 NULL, DS_MODE_EXCLUSIVE, FTAG, &origin_ds)); | |
| 2417 | 2047 /* |
| 5367 | 2048 * We need to explicitly open odd, since origin_ds's dd will be |
| 2417 | 2049 * changing. |
| 2050 */ | |
| 5367 | 2051 VERIFY(0 == dsl_dir_open_obj(dp, origin_ds->ds_dir->dd_object, |
| 2052 NULL, FTAG, &odd)); | |
| 2082 | 2053 |
| 2054 /* move snapshots to this dir */ | |
| 2199 | 2055 name = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
| 5367 | 2056 ds = origin_ds; |
| 2082 | 2057 /* CONSTCOND */ |
| 2058 while (TRUE) { | |
| 2059 dsl_dataset_t *prev; | |
| 2060 | |
| 2061 /* move snap name entry */ | |
| 2062 dsl_dataset_name(ds, name); | |
| 2199 | 2063 VERIFY(0 == zap_remove(dp->dp_meta_objset, |
| 2064 pa->snapnames_obj, ds->ds_snapname, tx)); | |
| 2065 VERIFY(0 == zap_add(dp->dp_meta_objset, | |
| 2082 | 2066 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname, |
| 2067 8, 1, &ds->ds_object, tx)); | |
| 2068 | |
| 2069 /* change containing dsl_dir */ | |
| 2070 dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
| 5367 | 2071 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object); |
| 2082 | 2072 ds->ds_phys->ds_dir_obj = dd->dd_object; |
| 5367 | 2073 ASSERT3P(ds->ds_dir, ==, odd); |
| 2082 | 2074 dsl_dir_close(ds->ds_dir, ds); |
| 2199 | 2075 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object, |
| 2082 | 2076 NULL, ds, &ds->ds_dir)); |
| 2077 | |
| 2078 ASSERT3U(dsl_prop_numcb(ds), ==, 0); | |
| 2079 | |
| 2080 if (ds->ds_phys->ds_prev_snap_obj == 0) | |
| 2081 break; | |
| 2082 | |
| 2199 | 2083 VERIFY(0 == dsl_dataset_open_obj(dp, |
| 2082 | 2084 ds->ds_phys->ds_prev_snap_obj, NULL, DS_MODE_EXCLUSIVE, |
| 2085 FTAG, &prev)); | |
| 2086 | |
| 2087 if (prev->ds_phys->ds_next_snap_obj != ds->ds_object) { | |
| 2088 dsl_dataset_close(prev, DS_MODE_EXCLUSIVE, FTAG); | |
| 2089 break; | |
| 2090 } | |
| 5367 | 2091 if (ds != origin_ds) |
| 2082 | 2092 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, FTAG); |
| 2093 ds = prev; | |
| 2094 } | |
| 5367 | 2095 if (ds != origin_ds) |
| 2199 | 2096 dsl_dataset_close(ds, DS_MODE_EXCLUSIVE, FTAG); |
| 2082 | 2097 |
| 5367 | 2098 /* change origin's next snap */ |
| 2099 dmu_buf_will_dirty(origin_ds->ds_dbuf, tx); | |
| 2100 origin_ds->ds_phys->ds_next_snap_obj = pa->newnext_obj; | |
| 2082 | 2101 |
| 5367 | 2102 /* change origin */ |
| 2082 | 2103 dmu_buf_will_dirty(dd->dd_dbuf, tx); |
| 5367 | 2104 ASSERT3U(dd->dd_phys->dd_origin_obj, ==, origin_ds->ds_object); |
| 2105 dd->dd_phys->dd_origin_obj = odd->dd_phys->dd_origin_obj; | |
| 2106 dmu_buf_will_dirty(odd->dd_dbuf, tx); | |
| 2107 odd->dd_phys->dd_origin_obj = origin_ds->ds_object; | |
| 2082 | 2108 |
| 2109 /* change space accounting */ | |
| 5367 | 2110 dsl_dir_diduse_space(odd, -pa->used, -pa->comp, -pa->uncomp, tx); |
| 2199 | 2111 dsl_dir_diduse_space(dd, pa->used, pa->comp, pa->uncomp, tx); |
| 5367 | 2112 origin_ds->ds_phys->ds_unique_bytes = pa->unique; |
| 2082 | 2113 |
| 4543 | 2114 /* log history record */ |
| 2115 spa_history_internal_log(LOG_DS_PROMOTE, dd->dd_pool->dp_spa, tx, | |
| 2116 cr, "dataset = %llu", ds->ds_object); | |
| 2117 | |
| 5367 | 2118 dsl_dir_close(odd, FTAG); |
| 2119 dsl_dataset_close(origin_ds, DS_MODE_EXCLUSIVE, FTAG); | |
| 2199 | 2120 kmem_free(name, MAXPATHLEN); |
| 2082 | 2121 } |
| 2122 | |
| 2123 int | |
| 2124 dsl_dataset_promote(const char *name) | |
| 2125 { | |
| 2126 dsl_dataset_t *ds; | |
| 2127 int err; | |
| 2128 dmu_object_info_t doi; | |
| 2199 | 2129 struct promotearg pa; |
| 2082 | 2130 |
| 2131 err = dsl_dataset_open(name, DS_MODE_NONE, FTAG, &ds); | |
| 2132 if (err) | |
| 2133 return (err); | |
| 2134 | |
| 2135 err = dmu_object_info(ds->ds_dir->dd_pool->dp_meta_objset, | |
| 2136 ds->ds_phys->ds_snapnames_zapobj, &doi); | |
| 2137 if (err) { | |
| 2138 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); | |
| 2139 return (err); | |
| 2140 } | |
| 2141 | |
| 2142 /* | |
| 2143 * Add in 128x the snapnames zapobj size, since we will be moving | |
| 2144 * a bunch of snapnames to the promoted ds, and dirtying their | |
| 2145 * bonus buffers. | |
| 2146 */ | |
| 2199 | 2147 err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
| 2148 dsl_dataset_promote_check, | |
| 2149 dsl_dataset_promote_sync, ds, &pa, 2 + 2 * doi.doi_physical_blks); | |
| 2082 | 2150 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); |
| 2151 return (err); | |
| 2152 } | |
| 3912 | 2153 |
| 5367 | 2154 struct cloneswaparg { |
| 2155 dsl_dataset_t *cds; /* clone dataset */ | |
| 2156 dsl_dataset_t *ohds; /* origin's head dataset */ | |
| 2157 boolean_t force; | |
| 2158 }; | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2159 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2160 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2161 static int |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2162 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
|
2163 { |
| 5367 | 2164 struct cloneswaparg *csa = arg1; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2165 |
| 5367 | 2166 /* they should both be heads */ |
| 2167 if (dsl_dataset_is_snapshot(csa->cds) || | |
| 2168 dsl_dataset_is_snapshot(csa->ohds)) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2169 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2170 |
| 5367 | 2171 /* the branch point should be just before them */ |
| 2172 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
|
2173 return (EINVAL); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2174 |
| 5367 | 2175 /* cds should be the clone */ |
| 2176 if (csa->cds->ds_prev->ds_phys->ds_next_snap_obj != | |
| 2177 csa->ohds->ds_object) | |
| 2178 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2179 |
| 5367 | 2180 /* the clone should be a child of the origin */ |
| 2181 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir) | |
| 2182 return (EINVAL); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2183 |
| 5367 | 2184 /* ohds shouldn't be modified unless 'force' */ |
| 2185 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds)) | |
| 2186 return (ETXTBSY); | |
| 2187 return (0); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2188 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2189 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2190 /* ARGSUSED */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2191 static void |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2192 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
|
2193 { |
| 5367 | 2194 struct cloneswaparg *csa = arg1; |
| 2195 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
|
2196 uint64_t itor = 0; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2197 blkptr_t bp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2198 uint64_t unique = 0; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2199 int err; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2200 |
| 5367 | 2201 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx); |
| 2202 dmu_buf_will_dirty(csa->ohds->ds_dbuf, tx); | |
| 2203 dmu_buf_will_dirty(csa->cds->ds_prev->ds_dbuf, tx); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2204 |
| 5367 | 2205 if (csa->cds->ds_user_ptr != NULL) { |
| 2206 csa->cds->ds_user_evict_func(csa->cds, csa->cds->ds_user_ptr); | |
| 2207 csa->cds->ds_user_ptr = NULL; | |
| 2208 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2209 |
| 5367 | 2210 if (csa->ohds->ds_user_ptr != NULL) { |
| 2211 csa->ohds->ds_user_evict_func(csa->ohds, | |
| 2212 csa->ohds->ds_user_ptr); | |
| 2213 csa->ohds->ds_user_ptr = NULL; | |
| 2214 } | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2215 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2216 /* compute unique space */ |
| 5367 | 2217 while ((err = bplist_iterate(&csa->cds->ds_deadlist, |
| 2218 &itor, &bp)) == 0) { | |
| 2219 if (bp.blk_birth > csa->cds->ds_prev->ds_phys->ds_prev_snap_txg) | |
| 2220 unique += bp_get_dasize(dp->dp_spa, &bp); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2221 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2222 VERIFY(err == ENOENT); |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2223 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2224 /* reset origin's unique bytes */ |
| 5367 | 2225 csa->cds->ds_prev->ds_phys->ds_unique_bytes = unique; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2226 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2227 /* swap blkptrs */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2228 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2229 blkptr_t tmp; |
| 5367 | 2230 tmp = csa->ohds->ds_phys->ds_bp; |
| 2231 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp; | |
| 2232 csa->cds->ds_phys->ds_bp = tmp; | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2233 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2234 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2235 /* set dd_*_bytes */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2236 { |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2237 int64_t dused, dcomp, duncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2238 uint64_t cdl_used, cdl_comp, cdl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2239 uint64_t odl_used, odl_comp, odl_uncomp; |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2240 |
| 5367 | 2241 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
|
2242 &cdl_comp, &cdl_uncomp)); |
| 5367 | 2243 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
|
2244 &odl_comp, &odl_uncomp)); |
| 5367 | 2245 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used - |
| 2246 (csa->ohds->ds_phys->ds_used_bytes + odl_used); | |
| 2247 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp - | |
| 2248 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp); | |
| 2249 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes + | |
| 2250 cdl_uncomp - | |
| 2251 (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
|
2252 |
| 5367 | 2253 dsl_dir_diduse_space(csa->ohds->ds_dir, |
| 2254 dused, dcomp, duncomp, tx); | |
| 2255 dsl_dir_diduse_space(csa->cds->ds_dir, | |
| 2256 -dused, -dcomp, -duncomp, tx); | |
| 2257 } | |
| 2258 | |
| 2259 #define SWITCH64(x, y) \ | |
| 2260 { \ | |
| 2261 uint64_t __tmp = (x); \ | |
| 2262 (x) = (y); \ | |
| 2263 (y) = __tmp; \ | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2264 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2265 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2266 /* swap ds_*_bytes */ |
| 5367 | 2267 SWITCH64(csa->ohds->ds_phys->ds_used_bytes, |
| 2268 csa->cds->ds_phys->ds_used_bytes); | |
| 2269 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes, | |
| 2270 csa->cds->ds_phys->ds_compressed_bytes); | |
| 2271 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes, | |
| 2272 csa->cds->ds_phys->ds_uncompressed_bytes); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2273 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2274 /* swap deadlists */ |
| 5367 | 2275 bplist_close(&csa->cds->ds_deadlist); |
| 2276 bplist_close(&csa->ohds->ds_deadlist); | |
| 2277 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj, | |
| 2278 csa->cds->ds_phys->ds_deadlist_obj); | |
| 2279 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset, | |
| 2280 csa->cds->ds_phys->ds_deadlist_obj)); | |
| 2281 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset, | |
| 2282 csa->ohds->ds_phys->ds_deadlist_obj)); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2283 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2284 |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2285 /* |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2286 * Swap the clone "cosname" with its origin head file system. |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2287 */ |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2288 int |
| 5367 | 2289 dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head, |
| 2290 boolean_t force) | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2291 { |
| 5367 | 2292 struct cloneswaparg csa; |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2293 |
| 5367 | 2294 ASSERT(clone->ds_open_refcount == DS_REF_MAX); |
| 2295 ASSERT(origin_head->ds_open_refcount == DS_REF_MAX); | |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2296 |
| 5367 | 2297 csa.cds = clone; |
| 2298 csa.ohds = origin_head; | |
| 2299 csa.force = force; | |
| 2300 return (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
|
2301 dsl_dataset_clone_swap_check, |
| 5367 | 2302 dsl_dataset_clone_swap_sync, &csa, NULL, 9)); |
|
5326
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2303 } |
|
6752aa2bd5bc
6425096 want online 'zfs recv' (read only and read/write)
ek110237
parents:
5094
diff
changeset
|
2304 |
| 3912 | 2305 /* |
| 2306 * Given a pool name and a dataset object number in that pool, | |
| 2307 * return the name of that dataset. | |
| 2308 */ | |
| 2309 int | |
| 2310 dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf) | |
| 2311 { | |
| 2312 spa_t *spa; | |
| 2313 dsl_pool_t *dp; | |
| 2314 dsl_dataset_t *ds = NULL; | |
| 2315 int error; | |
| 2316 | |
| 2317 if ((error = spa_open(pname, &spa, FTAG)) != 0) | |
| 2318 return (error); | |
| 2319 dp = spa_get_dsl(spa); | |
| 2320 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
| 2321 if ((error = dsl_dataset_open_obj(dp, obj, | |
| 2322 NULL, DS_MODE_NONE, FTAG, &ds)) != 0) { | |
| 2323 rw_exit(&dp->dp_config_rwlock); | |
| 2324 spa_close(spa, FTAG); | |
| 2325 return (error); | |
| 2326 } | |
| 2327 dsl_dataset_name(ds, buf); | |
| 2328 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); | |
| 2329 rw_exit(&dp->dp_config_rwlock); | |
| 2330 spa_close(spa, FTAG); | |
| 2331 | |
| 2332 return (0); | |
| 2333 } |