illumos/illumos-gate: usr/src/uts/common/fs/zfs/dsl

annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 10298:a0d52501437c

6860996 %temporary clones are not automatically destroyed on error 6863088 zfs panic in dnode_hold_impl from readdir()

author	Matthew Ahrens <Matthew.Ahrens@Sun.COM>
date	Wed, 12 Aug 2009 22:11:31 -0700
parents	a0669934e974
children	108f0058f837

rev	line source
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2 * CDDL HEADER START
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	3 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	4 * The contents of this file are subject to the terms of the
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	5 * Common Development and Distribution License (the "License").
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	6 * You may not use this file except in compliance with the License.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	7 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	9 * or http://www.opensolaris.org/os/licensing.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	10 * See the License for the specific language governing permissions
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	11 * and limitations under the License.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	12 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	13 * When distributing Covered Code, include this CDDL HEADER in each
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	15 * If applicable, add the following below this CDDL HEADER, with the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	16 * fields enclosed by brackets "[]" replaced with your own identifying
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	17 * information: Portions Copyright [yyyy] [name of copyright owner]
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	18 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	19 * CDDL HEADER END
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	20 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	21 /*
8517 41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	23 * Use is subject to license terms.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	24 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	25
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	26 #include <sys/dmu_objset.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	27 #include <sys/dsl_dataset.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	28 #include <sys/dsl_dir.h>
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	29 #include <sys/dsl_prop.h>
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	30 #include <sys/dsl_synctask.h>
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	31 #include <sys/dmu_traverse.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	32 #include <sys/dmu_tx.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	33 #include <sys/arc.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	34 #include <sys/zio.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	35 #include <sys/zap.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	36 #include <sys/unique.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	37 #include <sys/zfs_context.h>
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	38 #include <sys/zfs_ioctl.h>
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	39 #include <sys/spa.h>
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	40 #include <sys/zfs_znode.h>
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	41 #include <sys/sunddi.h>
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	42 #include <sys/zvol.h>
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	43
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	44 static char *dsl_reaper = "the grim reaper";
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	45
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	46 static dsl_checkfunc_t dsl_dataset_destroy_begin_check;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	47 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	48 static dsl_syncfunc_t dsl_dataset_set_reservation_sync;
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	49
3444 dc160a70a50d 6410433 'zpool status -v' would be more useful with filenames ek110237 parents: 3025 diff changeset	50 #define DS_REF_MAX (1ULL << 62)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	51
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	52 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	53
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	54 #define DSL_DATASET_IS_DESTROYED(ds) ((ds)->ds_owner == dsl_reaper)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	55
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	56
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	57 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	58 * Figure out how much of this delta should be propogated to the dsl_dir
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	59 * layer. If there's a refreservation, that space has already been
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	60 * partially accounted for in our ancestors.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	61 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	62 static int64_t
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	63 parent_delta(dsl_dataset_t *ds, int64_t delta)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	64 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	65 uint64_t old_bytes, new_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	66
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	67 if (ds->ds_reserved == 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	68 return (delta);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	69
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	70 old_bytes = MAX(ds->ds_phys->ds_unique_bytes, ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	71 new_bytes = MAX(ds->ds_phys->ds_unique_bytes + delta, ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	72
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	73 ASSERT3U(ABS((int64_t)(new_bytes - old_bytes)), <=, ABS(delta));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	74 return (new_bytes - old_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	75 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	76
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	77 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	78 dsl_dataset_block_born(dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	79 {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	80 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	81 int compressed = BP_GET_PSIZE(bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	82 int uncompressed = BP_GET_UCSIZE(bp);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	83 int64_t delta;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	84
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	85 dprintf_bp(bp, "born, ds=%p\n", ds);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	86
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	87 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	88 /* It could have been compressed away to nothing */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	89 if (BP_IS_HOLE(bp))
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	90 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	91 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	92 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	93 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	94 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	95 * Account for the meta-objset space in its placeholder
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	96 * dsl_dir.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	97 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	98 ASSERT3U(compressed, ==, uncompressed); /* it's all metadata */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	99 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	100 used, compressed, uncompressed, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	101 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	102 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	103 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	104 dmu_buf_will_dirty(ds->ds_dbuf, tx);
7595 2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	105 mutex_enter(&ds->ds_dir->dd_lock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	106 mutex_enter(&ds->ds_lock);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	107 delta = parent_delta(ds, used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	108 ds->ds_phys->ds_used_bytes += used;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	109 ds->ds_phys->ds_compressed_bytes += compressed;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	110 ds->ds_phys->ds_uncompressed_bytes += uncompressed;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	111 ds->ds_phys->ds_unique_bytes += used;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	112 mutex_exit(&ds->ds_lock);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	113 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, delta,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	114 compressed, uncompressed, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	115 dsl_dir_transfer_space(ds->ds_dir, used - delta,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	116 DD_USED_REFRSRV, DD_USED_HEAD, tx);
7595 2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	117 mutex_exit(&ds->ds_dir->dd_lock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	118 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	119
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	120 int
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	121 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	122 dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	123 {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	124 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	125 int compressed = BP_GET_PSIZE(bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	126 int uncompressed = BP_GET_UCSIZE(bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	127
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7595 diff changeset	128 ASSERT(pio != NULL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	129 ASSERT(dmu_tx_is_syncing(tx));
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	130 /* No block pointer => nothing to free */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	131 if (BP_IS_HOLE(bp))
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	132 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	133
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	134 ASSERT(used > 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	135 if (ds == NULL) {
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	136 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	137 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	138 * Account for the meta-objset space in its placeholder
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	139 * dataset.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	140 */
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	141 err = dsl_free(pio, tx->tx_pool,
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7595 diff changeset	142 tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	143 ASSERT(err == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	144
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	145 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	146 -used, -compressed, -uncompressed, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	147 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	148 return (used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	149 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	150 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	151
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	152 ASSERT(!dsl_dataset_is_snapshot(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	153 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	154
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	155 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	156 int err;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	157 int64_t delta;
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	158
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	159 dprintf_bp(bp, "freeing: %s", "");
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	160 err = dsl_free(pio, tx->tx_pool,
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7595 diff changeset	161 tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	162 ASSERT(err == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	163
7595 2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	164 mutex_enter(&ds->ds_dir->dd_lock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	165 mutex_enter(&ds->ds_lock);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	166 ASSERT(ds->ds_phys->ds_unique_bytes >= used \|\|
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	167 !DS_UNIQUE_IS_ACCURATE(ds));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	168 delta = parent_delta(ds, -used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	169 ds->ds_phys->ds_unique_bytes -= used;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	170 mutex_exit(&ds->ds_lock);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	171 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD,
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	172 delta, -compressed, -uncompressed, tx);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	173 dsl_dir_transfer_space(ds->ds_dir, -used - delta,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	174 DD_USED_REFRSRV, DD_USED_HEAD, tx);
7595 2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	175 mutex_exit(&ds->ds_dir->dd_lock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	176 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	177 dprintf_bp(bp, "putting on dead list: %s", "");
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	178 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist, bp, tx));
5712 81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	179 ASSERT3U(ds->ds_prev->ds_object, ==,
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	180 ds->ds_phys->ds_prev_snap_obj);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	181 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	182 /* if (bp->blk_birth > prev prev snap txg) prev unique += bs */
5712 81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	183 if (ds->ds_prev->ds_phys->ds_next_snap_obj ==
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	184 ds->ds_object && bp->blk_birth >
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	185 ds->ds_prev->ds_phys->ds_prev_snap_txg) {
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	186 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	187 mutex_enter(&ds->ds_prev->ds_lock);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	188 ds->ds_prev->ds_phys->ds_unique_bytes += used;
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	189 mutex_exit(&ds->ds_prev->ds_lock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	190 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	191 if (bp->blk_birth > ds->ds_origin_txg) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	192 dsl_dir_transfer_space(ds->ds_dir, used,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	193 DD_USED_HEAD, DD_USED_SNAP, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	194 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	195 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	196 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	197 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	198 ds->ds_phys->ds_used_bytes -= used;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	199 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	200 ds->ds_phys->ds_compressed_bytes -= compressed;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	201 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	202 ds->ds_phys->ds_uncompressed_bytes -= uncompressed;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	203 mutex_exit(&ds->ds_lock);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	204
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	205 return (used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	206 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	207
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	208 uint64_t
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	209 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	210 {
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	211 uint64_t trysnap = 0;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	212
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	213 if (ds == NULL)
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	214 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	215 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	216 * The snapshot creation could fail, but that would cause an
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	217 * incorrect FALSE return, which would only result in an
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	218 * overestimation of the amount of space that an operation would
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	219 * consume, which is OK.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	220 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	221 * There's also a small window where we could miss a pending
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	222 * snapshot, because we could set the sync task in the quiescing
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	223 * phase. So this should only be used as a guess.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	224 */
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	225 if (ds->ds_trysnap_txg >
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	226 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa))
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	227 trysnap = ds->ds_trysnap_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	228 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap));
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	229 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	230
9653 a70048a304d1 6664765 Unable to remove files when using fat-zap and quota exceeded on ZFS filesystem Sanjeev Bagewadi <Sanjeev.Bagewadi@Sun.COM> parents: 9396 diff changeset	231 boolean_t
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	232 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	233 {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	234 return (blk_birth > dsl_dataset_prev_snap_txg(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	235 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	236
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	237 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	238 static void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	239 dsl_dataset_evict(dmu_buf_t db, void dsv)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	240 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	241 dsl_dataset_t *ds = dsv;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	242
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	243 ASSERT(ds->ds_owner == NULL \|\| DSL_DATASET_IS_DESTROYED(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	244
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	245 unique_remove(ds->ds_fsid_guid);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	246
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	247 if (ds->ds_objset != NULL)
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	248 dmu_objset_evict(ds->ds_objset);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	249
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	250 if (ds->ds_prev) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	251 dsl_dataset_drop_ref(ds->ds_prev, ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	252 ds->ds_prev = NULL;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	253 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	254
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	255 bplist_close(&ds->ds_deadlist);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	256 if (ds->ds_dir)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	257 dsl_dir_close(ds->ds_dir, ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	258
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	259 ASSERT(!list_link_active(&ds->ds_synced_link));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	260
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	261 mutex_destroy(&ds->ds_lock);
10204 83c3a84aecef 6760420 zfs unmount -f causes recv to fail Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10002 diff changeset	262 mutex_destroy(&ds->ds_recvlock);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	263 mutex_destroy(&ds->ds_opening_lock);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	264 mutex_destroy(&ds->ds_deadlist.bpl_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	265 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	266 cv_destroy(&ds->ds_exclusive_cv);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	267
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	268 kmem_free(ds, sizeof (dsl_dataset_t));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	269 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	270
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	271 static int
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	272 dsl_dataset_get_snapname(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	273 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	274 dsl_dataset_phys_t *headphys;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	275 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	276 dmu_buf_t *headdbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	277 dsl_pool_t *dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	278 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	279
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	280 if (ds->ds_snapname[0])
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	281 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	282 if (ds->ds_phys->ds_next_snap_obj == 0)
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	283 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	284
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	285 err = dmu_bonus_hold(mos, ds->ds_dir->dd_phys->dd_head_dataset_obj,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	286 FTAG, &headdbuf);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	287 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	288 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	289 headphys = headdbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	290 err = zap_value_search(dp->dp_meta_objset,
4577 ed36b0e652bc PSARC/2007/328 zfs upgrade ahrens parents: 4569 diff changeset	291 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	292 dmu_buf_rele(headdbuf, FTAG);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	293 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	294 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	295
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	296 static int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	297 dsl_dataset_snap_lookup(dsl_dataset_t ds, const char name, uint64_t *value)
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	298 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	299 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	300 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj;
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	301 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	302 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	303
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	304 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET)
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	305 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	306 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	307 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	308
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	309 err = zap_lookup_norm(mos, snapobj, name, 8, 1,
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	310 value, mt, NULL, 0, NULL);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	311 if (err == ENOTSUP && mt == MT_FIRST)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	312 err = zap_lookup(mos, snapobj, name, 8, 1, value);
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	313 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	314 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	315
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	316 static int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	317 dsl_dataset_snap_remove(dsl_dataset_t ds, char name, dmu_tx_t *tx)
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	318 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	319 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	320 uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj;
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	321 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	322 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	323
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	324 if (ds->ds_phys->ds_flags & DS_FLAG_CI_DATASET)
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	325 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	326 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	327 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	328
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	329 err = zap_remove_norm(mos, snapobj, name, mt, tx);
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	330 if (err == ENOTSUP && mt == MT_FIRST)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	331 err = zap_remove(mos, snapobj, name, tx);
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	332 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	333 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	334
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	335 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	336 dsl_dataset_get_ref(dsl_pool_t dp, uint64_t dsobj, void tag,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	337 dsl_dataset_t **dsp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	338 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	339 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	340 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	341 dsl_dataset_t *ds;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	342 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	343
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	344 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) \|\|
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	345 dsl_pool_sync_context(dp));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	346
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	347 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	348 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	349 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	350 ds = dmu_buf_get_user(dbuf);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	351 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	352 dsl_dataset_t *winner;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	353
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	354 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	355 ds->ds_dbuf = dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	356 ds->ds_object = dsobj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	357 ds->ds_phys = dbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	358
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	359 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL);
10204 83c3a84aecef 6760420 zfs unmount -f causes recv to fail Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10002 diff changeset	360 mutex_init(&ds->ds_recvlock, NULL, MUTEX_DEFAULT, NULL);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	361 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	362 mutex_init(&ds->ds_deadlist.bpl_lock, NULL, MUTEX_DEFAULT,
6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	363 NULL);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	364 rw_init(&ds->ds_rwlock, 0, 0, 0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	365 cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	366
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	367 err = bplist_open(&ds->ds_deadlist,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	368 mos, ds->ds_phys->ds_deadlist_obj);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	369 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	370 err = dsl_dir_open_obj(dp,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	371 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	372 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	373 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	374 /*
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	375 * we don't really need to close the blist if we
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	376 * just opened it.
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	377 */
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	378 mutex_destroy(&ds->ds_lock);
10204 83c3a84aecef 6760420 zfs unmount -f causes recv to fail Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10002 diff changeset	379 mutex_destroy(&ds->ds_recvlock);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	380 mutex_destroy(&ds->ds_opening_lock);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	381 mutex_destroy(&ds->ds_deadlist.bpl_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	382 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	383 cv_destroy(&ds->ds_exclusive_cv);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	384 kmem_free(ds, sizeof (dsl_dataset_t));
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	385 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	386 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	387 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	388
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	389 if (!dsl_dataset_is_snapshot(ds)) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	390 ds->ds_snapname[0] = '\0';
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	391 if (ds->ds_phys->ds_prev_snap_obj) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	392 err = dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	393 ds->ds_phys->ds_prev_snap_obj,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	394 ds, &ds->ds_prev);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	395 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	396
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	397 if (err == 0 && dsl_dir_is_clone(ds->ds_dir)) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	398 dsl_dataset_t *origin;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	399
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	400 err = dsl_dataset_hold_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	401 ds->ds_dir->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	402 FTAG, &origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	403 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	404 ds->ds_origin_txg =
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	405 origin->ds_phys->ds_creation_txg;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	406 dsl_dataset_rele(origin, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	407 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	408 }
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	409 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	410 if (zfs_flags & ZFS_DEBUG_SNAPNAMES)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	411 err = dsl_dataset_get_snapname(ds);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	412 if (err == 0 && ds->ds_phys->ds_userrefs_obj != 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	413 err = zap_count(
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	414 ds->ds_dir->dd_pool->dp_meta_objset,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	415 ds->ds_phys->ds_userrefs_obj,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	416 &ds->ds_userrefs);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	417 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	418 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	419
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	420 if (err == 0 && !dsl_dataset_is_snapshot(ds)) {
5569 d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	421 /*
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	422 * In sync context, we're called with either no lock
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	423 * or with the write lock. If we're not syncing,
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	424 * we're always called with the read lock held.
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	425 */
5475 e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	426 boolean_t need_lock =
5569 d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	427 !RW_WRITE_HELD(&dp->dp_config_rwlock) &&
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	428 dsl_pool_sync_context(dp);
5475 e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	429
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	430 if (need_lock)
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	431 rw_enter(&dp->dp_config_rwlock, RW_READER);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	432
7265 cc18862247da PSARC/2008/483 ZFS clone -o ahrens parents: 7237 diff changeset	433 err = dsl_prop_get_ds(ds,
5475 e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	434 "refreservation", sizeof (uint64_t), 1,
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	435 &ds->ds_reserved, NULL);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	436 if (err == 0) {
7265 cc18862247da PSARC/2008/483 ZFS clone -o ahrens parents: 7237 diff changeset	437 err = dsl_prop_get_ds(ds,
5475 e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	438 "refquota", sizeof (uint64_t), 1,
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	439 &ds->ds_quota, NULL);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	440 }
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	441
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	442 if (need_lock)
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	443 rw_exit(&dp->dp_config_rwlock);
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	444 } else {
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	445 ds->ds_reserved = ds->ds_quota = 0;
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	446 }
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	447
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	448 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	449 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	450 dsl_dataset_evict);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	451 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	452 if (err \|\| winner) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	453 bplist_close(&ds->ds_deadlist);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	454 if (ds->ds_prev)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	455 dsl_dataset_drop_ref(ds->ds_prev, ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	456 dsl_dir_close(ds->ds_dir, ds);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	457 mutex_destroy(&ds->ds_lock);
10204 83c3a84aecef 6760420 zfs unmount -f causes recv to fail Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10002 diff changeset	458 mutex_destroy(&ds->ds_recvlock);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	459 mutex_destroy(&ds->ds_opening_lock);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	460 mutex_destroy(&ds->ds_deadlist.bpl_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	461 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	462 cv_destroy(&ds->ds_exclusive_cv);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	463 kmem_free(ds, sizeof (dsl_dataset_t));
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	464 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	465 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	466 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	467 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	468 ds = winner;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	469 } else {
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	470 ds->ds_fsid_guid =
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	471 unique_insert(ds->ds_phys->ds_fsid_guid);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	472 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	473 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	474 ASSERT3P(ds->ds_dbuf, ==, dbuf);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	475 ASSERT3P(ds->ds_phys, ==, dbuf->db_data);
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	476 ASSERT(ds->ds_phys->ds_prev_snap_obj != 0 \|\|
7061 524fec1acf1c 6723703 zpool upgrade -> assertion failed: ds->ds_phys->ds_prev_snap_obj != 0 \|\| ... ahrens parents: 7046 diff changeset	477 spa_version(dp->dp_spa) < SPA_VERSION_ORIGIN \|\|
7077 a63bdc0b8352 6724675 assertion failed in dsl_dataset_get_ref(): ds->ds_phys->ds_prev_snap_obj != 0 ... ahrens parents: 7061 diff changeset	478 dp->dp_origin_snap == NULL \|\| ds == dp->dp_origin_snap);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	479 mutex_enter(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	480 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	481 mutex_exit(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	482 dmu_buf_rele(ds->ds_dbuf, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	483 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	484 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	485 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	486 *dsp = ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	487 return (0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	488 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	489
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	490 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	491 dsl_dataset_hold_ref(dsl_dataset_t ds, void tag)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	492 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	493 dsl_pool_t *dp = ds->ds_dir->dd_pool;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	494
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	495 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	496 * In syncing context we don't want the rwlock lock: there
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	497 * may be an existing writer waiting for sync phase to
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	498 * finish. We don't need to worry about such writers, since
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	499 * sync phase is single-threaded, so the writer can't be
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	500 * doing anything while we are active.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	501 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	502 if (dsl_pool_sync_context(dp)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	503 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	504 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	505 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	506
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	507 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	508 * Normal users will hold the ds_rwlock as a READER until they
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	509 * are finished (i.e., call dsl_dataset_rele()). "Owners" will
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	510 * drop their READER lock after they set the ds_owner field.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	511 *
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	512 * If the dataset is being destroyed, the destroy thread will
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	513 * obtain a WRITER lock for exclusive access after it's done its
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	514 * open-context work and then change the ds_owner to
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	515 * dsl_reaper once destruction is assured. So threads
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	516 * may block here temporarily, until the "destructability" of
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	517 * the dataset is determined.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	518 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	519 ASSERT(!RW_WRITE_HELD(&dp->dp_config_rwlock));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	520 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	521 while (!rw_tryenter(&ds->ds_rwlock, RW_READER)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	522 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	523 cv_wait(&ds->ds_exclusive_cv, &ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	524 if (DSL_DATASET_IS_DESTROYED(ds)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	525 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	526 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	527 rw_enter(&dp->dp_config_rwlock, RW_READER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	528 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	529 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	530 rw_enter(&dp->dp_config_rwlock, RW_READER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	531 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	532 mutex_exit(&ds->ds_lock);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	533 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	534 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	535
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	536 int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	537 dsl_dataset_hold_obj(dsl_pool_t dp, uint64_t dsobj, void tag,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	538 dsl_dataset_t **dsp)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	539 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	540 int err = dsl_dataset_get_ref(dp, dsobj, tag, dsp);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	541
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	542 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	543 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	544 return (dsl_dataset_hold_ref(*dsp, tag));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	545 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	546
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	547 int
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	548 dsl_dataset_own_obj(dsl_pool_t *dp, uint64_t dsobj, boolean_t inconsistentok,
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	549 void tag, dsl_dataset_t *dsp)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	550 {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	551 int err = dsl_dataset_hold_obj(dp, dsobj, tag, dsp);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	552 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	553 return (err);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	554 if (!dsl_dataset_tryown(*dsp, inconsistentok, tag)) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	555 dsl_dataset_rele(*dsp, tag);
8779 f164e0e90508 6784924 panic while ludelete (zfs destroy) Mark J Musante <Mark.Musante@Sun.COM> parents: 8746 diff changeset	556 *dsp = NULL;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	557 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	558 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	559 return (0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	560 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	561
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	562 int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	563 dsl_dataset_hold(const char name, void tag, dsl_dataset_t **dsp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	564 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	565 dsl_dir_t *dd;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	566 dsl_pool_t *dp;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	567 const char *snapname;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	568 uint64_t obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	569 int err = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	570
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	571 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	572 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	573 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	574
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	575 dp = dd->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	576 obj = dd->dd_phys->dd_head_dataset_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	577 rw_enter(&dp->dp_config_rwlock, RW_READER);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	578 if (obj)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	579 err = dsl_dataset_get_ref(dp, obj, tag, dsp);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	580 else
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	581 err = ENOENT;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	582 if (err)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	583 goto out;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	584
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	585 err = dsl_dataset_hold_ref(*dsp, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	586
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	587 /* we may be looking for a snapshot */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	588 if (err == 0 && snapname != NULL) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	589 dsl_dataset_t *ds = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	590
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	591 if (*snapname++ != '@') {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	592 dsl_dataset_rele(*dsp, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	593 err = ENOENT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	594 goto out;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	595 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	596
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	597 dprintf("looking for snapshot '%s'\n", snapname);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	598 err = dsl_dataset_snap_lookup(*dsp, snapname, &obj);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	599 if (err == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	600 err = dsl_dataset_get_ref(dp, obj, tag, &ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	601 dsl_dataset_rele(*dsp, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	602
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	603 ASSERT3U((err == 0), ==, (ds != NULL));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	604
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	605 if (ds) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	606 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	607 if (ds->ds_snapname[0] == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	608 (void) strlcpy(ds->ds_snapname, snapname,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	609 sizeof (ds->ds_snapname));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	610 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	611 err = dsl_dataset_hold_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	612 *dsp = err ? NULL : ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	613 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	614 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	615 out:
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	616 rw_exit(&dp->dp_config_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	617 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	618 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	619 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	620
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	621 int
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	622 dsl_dataset_own(const char *name, boolean_t inconsistentok,
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	623 void tag, dsl_dataset_t *dsp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	624 {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	625 int err = dsl_dataset_hold(name, tag, dsp);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	626 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	627 return (err);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	628 if (!dsl_dataset_tryown(*dsp, inconsistentok, tag)) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	629 dsl_dataset_rele(*dsp, tag);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	630 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	631 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	632 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	633 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	634
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	635 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	636 dsl_dataset_name(dsl_dataset_t ds, char name)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	637 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	638 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	639 (void) strcpy(name, "mos");
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	640 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	641 dsl_dir_name(ds->ds_dir, name);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	642 VERIFY(0 == dsl_dataset_get_snapname(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	643 if (ds->ds_snapname[0]) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	644 (void) strcat(name, "@");
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	645 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	646 * We use a "recursive" mutex so that we
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	647 * can call dprintf_ds() with ds_lock held.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	648 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	649 if (!MUTEX_HELD(&ds->ds_lock)) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	650 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	651 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	652 mutex_exit(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	653 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	654 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	655 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	656 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	657 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	658 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	659
3978 2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	660 static int
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	661 dsl_dataset_namelen(dsl_dataset_t *ds)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	662 {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	663 int result;
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	664
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	665 if (ds == NULL) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	666 result = 3; /* "mos" */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	667 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	668 result = dsl_dir_namelen(ds->ds_dir);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	669 VERIFY(0 == dsl_dataset_get_snapname(ds));
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	670 if (ds->ds_snapname[0]) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	671 ++result; /* adding one for the @-sign */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	672 if (!MUTEX_HELD(&ds->ds_lock)) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	673 mutex_enter(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	674 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	675 mutex_exit(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	676 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	677 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	678 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	679 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	680 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	681
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	682 return (result);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	683 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	684
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	685 void
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	686 dsl_dataset_drop_ref(dsl_dataset_t ds, void tag)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	687 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	688 dmu_buf_rele(ds->ds_dbuf, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	689 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	690
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	691 void
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	692 dsl_dataset_rele(dsl_dataset_t ds, void tag)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	693 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	694 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	695 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	696 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	697 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	698 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	699
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	700 void
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	701 dsl_dataset_disown(dsl_dataset_t ds, void tag)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	702 {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	703 ASSERT((ds->ds_owner == tag && ds->ds_dbuf) \|\|
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	704 (DSL_DATASET_IS_DESTROYED(ds) && ds->ds_dbuf == NULL));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	705
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	706 mutex_enter(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	707 ds->ds_owner = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	708 if (RW_WRITE_HELD(&ds->ds_rwlock)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	709 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	710 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	711 }
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	712 mutex_exit(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	713 if (ds->ds_dbuf)
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	714 dsl_dataset_drop_ref(ds, tag);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	715 else
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	716 dsl_dataset_evict(ds->ds_dbuf, ds);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	717 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	718
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	719 boolean_t
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	720 dsl_dataset_tryown(dsl_dataset_t ds, boolean_t inconsistentok, void tag)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	721 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	722 boolean_t gotit = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	723
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	724 mutex_enter(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	725 if (ds->ds_owner == NULL &&
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	726 (!DS_IS_INCONSISTENT(ds) \|\| inconsistentok)) {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	727 ds->ds_owner = tag;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	728 if (!dsl_pool_sync_context(ds->ds_dir->dd_pool))
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	729 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	730 gotit = TRUE;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	731 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	732 mutex_exit(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	733 return (gotit);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	734 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	735
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	736 void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	737 dsl_dataset_make_exclusive(dsl_dataset_t ds, void owner)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	738 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	739 ASSERT3P(owner, ==, ds->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	740 if (!RW_WRITE_HELD(&ds->ds_rwlock))
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	741 rw_enter(&ds->ds_rwlock, RW_WRITER);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	742 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	743
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	744 uint64_t
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	745 dsl_dataset_create_sync_dd(dsl_dir_t dd, dsl_dataset_t origin,
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	746 uint64_t flags, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	747 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	748 dsl_pool_t *dp = dd->dd_pool;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	749 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	750 dsl_dataset_phys_t *dsphys;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	751 uint64_t dsobj;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	752 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	753
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	754 if (origin == NULL)
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	755 origin = dp->dp_origin_snap;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	756
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	757 ASSERT(origin == NULL \|\| origin->ds_dir->dd_pool == dp);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	758 ASSERT(origin == NULL \|\| origin->ds_phys->ds_num_children > 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	759 ASSERT(dmu_tx_is_syncing(tx));
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	760 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	761
928 36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets tabriz parents: 885 diff changeset	762 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	763 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	764 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	765 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	766 dsphys = dbuf->db_data;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	767 bzero(dsphys, sizeof (dsl_dataset_phys_t));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	768 dsphys->ds_dir_obj = dd->dd_object;
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	769 dsphys->ds_flags = flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	770 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	771 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	772 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	773 dsphys->ds_snapnames_zapobj =
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	774 zap_create_norm(mos, U8_TEXTPREP_TOUPPER, DMU_OT_DSL_DS_SNAP_MAP,
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	775 DMU_OT_NONE, 0, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	776 dsphys->ds_creation_time = gethrestime_sec();
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	777 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	778 dsphys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	779 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	780
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	781 if (origin) {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	782 dsphys->ds_prev_snap_obj = origin->ds_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	783 dsphys->ds_prev_snap_txg =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	784 origin->ds_phys->ds_creation_txg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	785 dsphys->ds_used_bytes =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	786 origin->ds_phys->ds_used_bytes;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	787 dsphys->ds_compressed_bytes =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	788 origin->ds_phys->ds_compressed_bytes;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	789 dsphys->ds_uncompressed_bytes =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	790 origin->ds_phys->ds_uncompressed_bytes;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	791 dsphys->ds_bp = origin->ds_phys->ds_bp;
6502 66aef5f20377 6694731 drc->drc_real_ds->ds_phys->ds_flags & (1ULL<<0), file: ../../common/fs/zfs/dmu_send.c, line: 1069 timh parents: 6492 diff changeset	792 dsphys->ds_flags \|= origin->ds_phys->ds_flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	793
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	794 dmu_buf_will_dirty(origin->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	795 origin->ds_phys->ds_num_children++;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	796
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	797 if (spa_version(dp->dp_spa) >= SPA_VERSION_NEXT_CLONES) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	798 if (origin->ds_phys->ds_next_clones_obj == 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	799 origin->ds_phys->ds_next_clones_obj =
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	800 zap_create(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	801 DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	802 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	803 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	804 origin->ds_phys->ds_next_clones_obj,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	805 dsobj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	806 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	807
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	808 dmu_buf_will_dirty(dd->dd_dbuf, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	809 dd->dd_phys->dd_origin_obj = origin->ds_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	810 }
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	811
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	812 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE)
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	813 dsphys->ds_flags \|= DS_FLAG_UNIQUE_ACCURATE;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	814
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	815 dmu_buf_rele(dbuf, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	816
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	817 dmu_buf_will_dirty(dd->dd_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	818 dd->dd_phys->dd_head_dataset_obj = dsobj;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	819
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	820 return (dsobj);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	821 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	822
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	823 uint64_t
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	824 dsl_dataset_create_sync(dsl_dir_t pdd, const char lastname,
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	825 dsl_dataset_t origin, uint64_t flags, cred_t cr, dmu_tx_t *tx)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	826 {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	827 dsl_pool_t *dp = pdd->dd_pool;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	828 uint64_t dsobj, ddobj;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	829 dsl_dir_t *dd;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	830
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	831 ASSERT(lastname[0] != '@');
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	832
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	833 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	834 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd));
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	835
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	836 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	837
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	838 dsl_deleg_set_create_perms(dd, tx, cr);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	839
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	840 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	841
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	842 return (dsobj);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	843 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	844
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	845 struct destroyarg {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	846 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	847 char *snapname;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	848 char *failed;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	849 boolean_t defer;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	850 };
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	851
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	852 static int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	853 dsl_snapshot_destroy_one(char name, void arg)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	854 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	855 struct destroyarg *da = arg;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	856 dsl_dataset_t *ds;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	857 int err;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	858 char *dsname;
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	859
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	860 dsname = kmem_asprintf("%s@%s", name, da->snapname);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	861 err = dsl_dataset_own(dsname, B_TRUE, da->dstg, &ds);
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	862 strfree(dsname);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	863 if (err == 0) {
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	864 struct dsl_ds_destroyarg *dsda;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	865
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	866 dsl_dataset_make_exclusive(ds, da->dstg);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	867 if (ds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	868 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	869 ds->ds_objset = NULL;
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	870 }
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	871 dsda = kmem_zalloc(sizeof (struct dsl_ds_destroyarg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	872 dsda->ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	873 dsda->defer = da->defer;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	874 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check,
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	875 dsl_dataset_destroy_sync, dsda, da->dstg, 0);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	876 } else if (err == ENOENT) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	877 err = 0;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	878 } else {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	879 (void) strcpy(da->failed, name);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	880 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	881 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	882 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	883
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	884 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	885 * Destroy 'snapname' in all descendants of 'fsname'.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	886 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	887 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	888 int
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	889 dsl_snapshots_destroy(char fsname, char snapname, boolean_t defer)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	890 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	891 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	892 struct destroyarg da;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	893 dsl_sync_task_t *dst;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	894 spa_t *spa;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	895
4603 c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups ahrens parents: 4577 diff changeset	896 err = spa_open(fsname, &spa, FTAG);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	897 if (err)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	898 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	899 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	900 da.snapname = snapname;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	901 da.failed = fsname;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	902 da.defer = defer;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	903
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	904 err = dmu_objset_find(fsname,
2417 694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	905 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	906
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	907 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	908 err = dsl_sync_task_group_wait(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	909
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	910 for (dst = list_head(&da.dstg->dstg_tasks); dst;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	911 dst = list_next(&da.dstg->dstg_tasks, dst)) {
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	912 struct dsl_ds_destroyarg *dsda = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	913 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	914
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	915 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	916 * Return the file system name that triggered the error
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	917 */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	918 if (dst->dst_err) {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	919 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	920 *strchr(fsname, '@') = '\0';
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	921 }
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	922 ASSERT3P(dsda->rm_origin, ==, NULL);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	923 dsl_dataset_disown(ds, da.dstg);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	924 kmem_free(dsda, sizeof (struct dsl_ds_destroyarg));
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	925 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	926
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	927 dsl_sync_task_group_destroy(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	928 spa_close(spa, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	929 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	930 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	931
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	932 static boolean_t
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	933 dsl_dataset_might_destroy_origin(dsl_dataset_t *ds)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	934 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	935 boolean_t might_destroy = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	936
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	937 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	938 if (ds->ds_phys->ds_num_children == 2 && ds->ds_userrefs == 0 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	939 DS_IS_DEFER_DESTROY(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	940 might_destroy = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	941 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	942
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	943 return (might_destroy);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	944 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	945
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	946 #ifdef _KERNEL
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	947 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	948 dsl_dataset_zvol_cleanup(dsl_dataset_t ds, const char name)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	949 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	950 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	951 objset_t *os;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	952
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	953 error = dmu_objset_from_ds(ds, &os);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	954 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	955 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	956
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	957 if (dmu_objset_type(os) == DMU_OST_ZVOL)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	958 error = zvol_remove_minor(name);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	959
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	960 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	961 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	962 #endif
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	963
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	964 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	965 * If we're removing a clone, and these three conditions are true:
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	966 * 1) the clone's origin has no other children
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	967 * 2) the clone's origin has no user references
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	968 * 3) the clone's origin has been marked for deferred destruction
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	969 * Then, prepare to remove the origin as part of this sync task group.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	970 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	971 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	972 dsl_dataset_origin_rm_prep(struct dsl_ds_destroyarg dsda, void tag)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	973 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	974 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	975 dsl_dataset_t *origin = ds->ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	976
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	977 if (dsl_dataset_might_destroy_origin(origin)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	978 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	979 int namelen;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	980 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	981
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	982 namelen = dsl_dataset_namelen(origin) + 1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	983 name = kmem_alloc(namelen, KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	984 dsl_dataset_name(origin, name);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	985 #ifdef _KERNEL
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	986 error = zfs_unmount_snap(name, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	987 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	988 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	989 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	990 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	991 error = dsl_dataset_zvol_cleanup(origin, name);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	992 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	993 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	994 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	995 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	996 #endif
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	997 error = dsl_dataset_own(name, B_TRUE, tag, &origin);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	998 kmem_free(name, namelen);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	999 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1000 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1001 dsda->rm_origin = origin;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1002 dsl_dataset_make_exclusive(origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1003 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1004
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1005 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1006 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1007
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1008 /*
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1009 * ds must be opened as OWNER. On return (whether successful or not),
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1010 * ds will be closed and caller can no longer dereference it.
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1011 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1012 int
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1013 dsl_dataset_destroy(dsl_dataset_t ds, void tag, boolean_t defer)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1014 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1015 int err;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1016 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1017 objset_t *os;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1018 dsl_dir_t *dd;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1019 uint64_t obj;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1020 struct dsl_ds_destroyarg dsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1021
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1022 dsda.ds = ds;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1023
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1024 if (dsl_dataset_is_snapshot(ds)) {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1025 /* Destroying a snapshot is simpler */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1026 dsl_dataset_make_exclusive(ds, tag);
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	1027
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1028 if (ds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1029 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1030 ds->ds_objset = NULL;
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	1031 }
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1032 /* NOTE: defer is always B_FALSE for non-snapshots */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1033 dsda.defer = defer;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1034 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1035 dsl_dataset_destroy_check, dsl_dataset_destroy_sync,
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1036 &dsda, tag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1037 ASSERT3P(dsda.rm_origin, ==, NULL);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1038 goto out;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1039 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1040
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1041 dd = ds->ds_dir;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1042
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1043 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1044 * Check for errors and mark this ds as inconsistent, in
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1045 * case we crash while freeing the objects.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1046 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1047 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1048 dsl_dataset_destroy_begin_sync, ds, NULL, 0);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1049 if (err)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1050 goto out;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1051
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1052 err = dmu_objset_from_ds(ds, &os);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1053 if (err)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1054 goto out;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1055
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1056 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1057 * remove the objects in open context, so that we won't
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1058 * have too much to do in syncing context.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1059 */
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1060 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE,
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1061 ds->ds_phys->ds_prev_snap_txg)) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	1062 /*
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	1063 * Ignore errors, if there is not enough disk space
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	1064 * we will deal with it in dsl_dataset_destroy_sync().
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	1065 */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	1066 (void) dmu_free_object(os, obj);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1067 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1068
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1069 /*
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1070 * We need to sync out all in-flight IO before we try to evict
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1071 * (the dataset evict func is trying to clear the cached entries
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1072 * for this dataset in the ARC).
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1073 */
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1074 txg_wait_synced(dd->dd_pool, 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1075
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1076 /*
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1077 * If we managed to free all the objects in open
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1078 * context, the user space accounting should be zero.
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1079 */
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1080 if (ds->ds_phys->ds_bp.blk_fill == 0 &&
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1081 dmu_objset_userused_enabled(os)) {
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1082 uint64_t count;
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1083
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1084 ASSERT(zap_count(os, DMU_USERUSED_OBJECT, &count) != 0 \|\|
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1085 count == 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1086 ASSERT(zap_count(os, DMU_GROUPUSED_OBJECT, &count) != 0 \|\|
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1087 count == 0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1088 }
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1089
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1090 if (err != ESRCH)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1091 goto out;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1092
6975 c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1093 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1094 err = dsl_dir_open_obj(dd->dd_pool, dd->dd_object, NULL, FTAG, &dd);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1095 rw_exit(&dd->dd_pool->dp_config_rwlock);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1096
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1097 if (err)
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1098 goto out;
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1099
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1100 if (ds->ds_objset) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1101 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1102 * We need to sync out all in-flight IO before we try
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1103 * to evict (the dataset evict func is trying to clear
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1104 * the cached entries for this dataset in the ARC).
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1105 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1106 txg_wait_synced(dd->dd_pool, 0);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1107 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1108
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1109 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1110 * Blow away the dsl_dir + head dataset.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1111 */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1112 dsl_dataset_make_exclusive(ds, tag);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1113 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1114 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1115 ds->ds_objset = NULL;
6975 c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	1116 }
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1117
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1118 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1119 * If we're removing a clone, we might also need to remove its
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1120 * origin.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1121 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1122 do {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1123 dsda.need_prep = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1124 if (dsl_dir_is_clone(dd)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1125 err = dsl_dataset_origin_rm_prep(&dsda, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1126 if (err) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1127 dsl_dir_close(dd, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1128 goto out;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1129 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1130 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1131
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1132 dstg = dsl_sync_task_group_create(ds->ds_dir->dd_pool);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1133 dsl_sync_task_create(dstg, dsl_dataset_destroy_check,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1134 dsl_dataset_destroy_sync, &dsda, tag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1135 dsl_sync_task_create(dstg, dsl_dir_destroy_check,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1136 dsl_dir_destroy_sync, dd, FTAG, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1137 err = dsl_sync_task_group_wait(dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1138 dsl_sync_task_group_destroy(dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1139
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1140 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1141 * We could be racing against 'zfs release' or 'zfs destroy -d'
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1142 * on the origin snap, in which case we can get EBUSY if we
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1143 * needed to destroy the origin snap but were not ready to
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1144 * do so.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1145 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1146 if (dsda.need_prep) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1147 ASSERT(err == EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1148 ASSERT(dsl_dir_is_clone(dd));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1149 ASSERT(dsda.rm_origin == NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1150 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1151 } while (dsda.need_prep);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1152
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1153 if (dsda.rm_origin != NULL)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1154 dsl_dataset_disown(dsda.rm_origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1155
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1156 /* if it is successful, dsl_dir_destroy_sync will close the dd */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1157 if (err)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1158 dsl_dir_close(dd, FTAG);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1159 out:
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1160 dsl_dataset_disown(ds, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1161 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1162 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1163
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1164 blkptr_t *
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1165 dsl_dataset_get_blkptr(dsl_dataset_t *ds)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1166 {
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1167 return (&ds->ds_phys->ds_bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1168 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1169
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1170 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1171 dsl_dataset_set_blkptr(dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1172 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1173 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1174 /* If it's the meta-objset, set dp_meta_rootbp */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1175 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1176 tx->tx_pool->dp_meta_rootbp = *bp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1177 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1178 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1179 ds->ds_phys->ds_bp = *bp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1180 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1181 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1182
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1183 spa_t *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1184 dsl_dataset_get_spa(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1185 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1186 return (ds->ds_dir->dd_pool->dp_spa);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1187 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1188
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1189 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1190 dsl_dataset_dirty(dsl_dataset_t ds, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1191 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1192 dsl_pool_t *dp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1193
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1194 if (ds == NULL) /* this is the meta-objset */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1195 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1196
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1197 ASSERT(ds->ds_objset != NULL);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1198
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1199 if (ds->ds_phys->ds_next_snap_obj != 0)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1200 panic("dirtying snapshot!");
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1201
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1202 dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1203
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1204 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1205 /* up the hold count until we can be written out */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1206 dmu_buf_add_ref(ds->ds_dbuf, ds);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1207 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1208 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1209
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1210 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1211 * The unique space in the head dataset can be calculated by subtracting
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1212 * the space used in the most recent snapshot, that is still being used
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1213 * in this file system, from the space currently in use. To figure out
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1214 * the space in the most recent snapshot still in use, we need to take
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1215 * the total space used in the snapshot and subtract out the space that
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1216 * has been freed up since the snapshot was taken.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1217 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1218 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1219 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1220 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1221 uint64_t mrs_used;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1222 uint64_t dlused, dlcomp, dluncomp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1223
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1224 ASSERT(ds->ds_object == ds->ds_dir->dd_phys->dd_head_dataset_obj);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1225
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1226 if (ds->ds_phys->ds_prev_snap_obj != 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1227 mrs_used = ds->ds_prev->ds_phys->ds_used_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1228 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1229 mrs_used = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1230
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1231 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1232 &dluncomp));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1233
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1234 ASSERT3U(dlused, <=, mrs_used);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1235 ds->ds_phys->ds_unique_bytes =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1236 ds->ds_phys->ds_used_bytes - (mrs_used - dlused);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1237
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1238 if (!DS_UNIQUE_IS_ACCURATE(ds) &&
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1239 spa_version(ds->ds_dir->dd_pool->dp_spa) >=
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1240 SPA_VERSION_UNIQUE_ACCURATE)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1241 ds->ds_phys->ds_flags \|= DS_FLAG_UNIQUE_ACCURATE;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1242 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1243
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1244 static uint64_t
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1245 dsl_dataset_unique(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1246 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1247 if (!DS_UNIQUE_IS_ACCURATE(ds) && !dsl_dataset_is_snapshot(ds))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1248 dsl_dataset_recalc_head_uniq(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1249
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1250 return (ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1251 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1252
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1253 struct killarg {
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1254 dsl_dataset_t *ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1255 zio_t *zio;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1256 dmu_tx_t *tx;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1257 };
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1258
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1259 /* ARGSUSED */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1260 static int
7837 001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1261 kill_blkptr(spa_t spa, blkptr_t bp, const zbookmark_t *zb,
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1262 const dnode_phys_t dnp, void arg)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1263 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1264 struct killarg *ka = arg;
7837 001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1265
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1266 if (bp == NULL)
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1267 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1268
8746 e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1269 if ((zb->zb_level == -1ULL && zb->zb_blkid != 0) \|\|
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1270 (zb->zb_object != 0 && dnp == NULL)) {
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1271 /*
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1272 * It's a block in the intent log. It has no
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1273 * accounting, so just free it.
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1274 */
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1275 VERIFY3U(0, ==, dsl_free(ka->zio, ka->tx->tx_pool,
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1276 ka->tx->tx_txg, bp, NULL, NULL, ARC_NOWAIT));
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1277 } else {
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1278 ASSERT3U(bp->blk_birth, >, ka->ds->ds_phys->ds_prev_snap_txg);
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1279 (void) dsl_dataset_block_kill(ka->ds, bp, ka->zio, ka->tx);
e1d96ca6808c 6796377 panic on rollback in space_map_add() Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8525 diff changeset	1280 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1281
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1282 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1283 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1284
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1285 /* ARGSUSED */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1286 static int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1287 dsl_dataset_destroy_begin_check(void arg1, void arg2, dmu_tx_t *tx)
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1288 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1289 dsl_dataset_t *ds = arg1;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1290 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1291 uint64_t count;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1292 int err;
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1293
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1294 /*
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1295 * Can't delete a head dataset if there are snapshots of it.
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1296 * (Except if the only snapshots are from the branch we cloned
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1297 * from.)
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1298 */
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1299 if (ds->ds_prev != NULL &&
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1300 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object)
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1301 return (EINVAL);
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1302
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1303 /*
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1304 * This is really a dsl_dir thing, but check it here so that
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1305 * we'll be less likely to leave this dataset inconsistent &
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1306 * nearly destroyed.
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1307 */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1308 err = zap_count(mos, ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1309 if (err)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1310 return (err);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1311 if (count != 0)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1312 return (EEXIST);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1313
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1314 return (0);
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1315 }
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1316
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1317 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1318 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1319 dsl_dataset_destroy_begin_sync(void arg1, void arg2, cred_t cr, dmu_tx_t tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1320 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1321 dsl_dataset_t *ds = arg1;
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1322 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1323
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1324 /* Mark it as inconsistent on-disk, in case we crash */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1325 dmu_buf_will_dirty(ds->ds_dbuf, tx);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1326 ds->ds_phys->ds_flags \|= DS_FLAG_INCONSISTENT;
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1327
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1328 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1329 cr, "dataset = %llu", ds->ds_object);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1330 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1331
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1332 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1333 dsl_dataset_origin_check(struct dsl_ds_destroyarg dsda, void tag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1334 dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1335 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1336 dsl_dataset_t *ds = dsda->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1337 dsl_dataset_t *ds_prev = ds->ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1338
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1339 if (dsl_dataset_might_destroy_origin(ds_prev)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1340 struct dsl_ds_destroyarg ndsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1341
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1342 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1343 * If we're not prepared to remove the origin, don't remove
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1344 * the clone either.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1345 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1346 if (dsda->rm_origin == NULL) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1347 dsda->need_prep = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1348 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1349 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1350
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1351 ndsda.ds = ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1352 ndsda.is_origin_rm = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1353 return (dsl_dataset_destroy_check(&ndsda, tag, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1354 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1355
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1356 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1357 * If we're not going to remove the origin after all,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1358 * undo the open context setup.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1359 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1360 if (dsda->rm_origin != NULL) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1361 dsl_dataset_disown(dsda->rm_origin, tag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1362 dsda->rm_origin = NULL;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1363 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1364
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1365 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1366 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1367
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1368 /* ARGSUSED */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1369 int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1370 dsl_dataset_destroy_check(void arg1, void arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1371 {
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1372 struct dsl_ds_destroyarg *dsda = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1373 dsl_dataset_t *ds = dsda->ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1374
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1375 /* we have an owner hold, so noone else can destroy us */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1376 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1377
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1378 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1379 * Only allow deferred destroy on pools that support it.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1380 * NOTE: deferred destroy is only supported on snapshots.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1381 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1382 if (dsda->defer) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1383 if (spa_version(ds->ds_dir->dd_pool->dp_spa) <
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1384 SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1385 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1386 ASSERT(dsl_dataset_is_snapshot(ds));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1387 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1388 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1389
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1390 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1391 * Can't delete a head dataset if there are snapshots of it.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1392 * (Except if the only snapshots are from the branch we cloned
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1393 * from.)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1394 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1395 if (ds->ds_prev != NULL &&
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1396 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1397 return (EINVAL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1398
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1399 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1400 * If we made changes this txg, traverse_dsl_dataset won't find
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1401 * them. Try again.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1402 */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1403 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1404 return (EAGAIN);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1405
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1406 if (dsl_dataset_is_snapshot(ds)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1407 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1408 * If this snapshot has an elevated user reference count,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1409 * we can't destroy it yet.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1410 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1411 if (ds->ds_userrefs > 0 && !dsda->releasing)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1412 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1413
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1414 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1415 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1416 * Can't delete a branch point. However, if we're destroying
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1417 * a clone and removing its origin due to it having a user
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1418 * hold count of 0 and having been marked for deferred destroy,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1419 * it's OK for the origin to have a single clone.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1420 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1421 if (ds->ds_phys->ds_num_children >
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1422 (dsda->is_origin_rm ? 2 : 1)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1423 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1424 return (EEXIST);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1425 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1426 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1427 } else if (dsl_dir_is_clone(ds->ds_dir)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1428 return (dsl_dataset_origin_check(dsda, arg2, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1429 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1430
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1431 /* XXX we should do some i/o error checking... */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1432 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1433 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1434
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1435 struct refsarg {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1436 kmutex_t lock;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1437 boolean_t gone;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1438 kcondvar_t cv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1439 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1440
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1441 /* ARGSUSED */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1442 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1443 dsl_dataset_refs_gone(dmu_buf_t db, void argv)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1444 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1445 struct refsarg *arg = argv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1446
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1447 mutex_enter(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1448 arg->gone = TRUE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1449 cv_signal(&arg->cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1450 mutex_exit(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1451 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1452
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1453 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1454 dsl_dataset_drain_refs(dsl_dataset_t ds, void tag)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1455 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1456 struct refsarg arg;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1457
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1458 mutex_init(&arg.lock, NULL, MUTEX_DEFAULT, NULL);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1459 cv_init(&arg.cv, NULL, CV_DEFAULT, NULL);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1460 arg.gone = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1461 (void) dmu_buf_update_user(ds->ds_dbuf, ds, &arg, &ds->ds_phys,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1462 dsl_dataset_refs_gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1463 dmu_buf_rele(ds->ds_dbuf, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1464 mutex_enter(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1465 while (!arg.gone)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1466 cv_wait(&arg.cv, &arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1467 ASSERT(arg.gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1468 mutex_exit(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1469 ds->ds_dbuf = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1470 ds->ds_phys = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1471 mutex_destroy(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1472 cv_destroy(&arg.cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1473 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1474
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1475 void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1476 dsl_dataset_destroy_sync(void arg1, void tag, cred_t cr, dmu_tx_t tx)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1477 {
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1478 struct dsl_ds_destroyarg *dsda = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1479 dsl_dataset_t *ds = dsda->ds;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1480 zio_t *zio;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1481 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1482 int after_branch_point = FALSE;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1483 dsl_pool_t *dp = ds->ds_dir->dd_pool;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1484 objset_t *mos = dp->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1485 dsl_dataset_t *ds_prev = NULL;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1486 uint64_t obj;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1487
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1488 ASSERT(ds->ds_owner);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1489 ASSERT(dsda->defer \|\| ds->ds_phys->ds_num_children <= 1);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1490 ASSERT(ds->ds_prev == NULL \|\|
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1491 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1492 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1493
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1494 if (dsda->defer) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1495 ASSERT(spa_version(dp->dp_spa) >= SPA_VERSION_USERREFS);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1496 if (ds->ds_userrefs > 0 \|\| ds->ds_phys->ds_num_children > 1) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1497 dmu_buf_will_dirty(ds->ds_dbuf, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1498 ds->ds_phys->ds_flags \|= DS_FLAG_DEFER_DESTROY;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1499 return;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1500 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1501 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1502
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1503 /* signal any waiters that this dataset is going away */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1504 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1505 ds->ds_owner = dsl_reaper;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1506 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1507 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1508
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1509 /* Remove our reservation */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1510 if (ds->ds_reserved != 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1511 uint64_t val = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1512 dsl_dataset_set_reservation_sync(ds, &val, cr, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1513 ASSERT3U(ds->ds_reserved, ==, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1514 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1515
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1516 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1517
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1518 dsl_pool_ds_destroyed(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1519
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1520 obj = ds->ds_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1521
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1522 if (ds->ds_phys->ds_prev_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1523 if (ds->ds_prev) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1524 ds_prev = ds->ds_prev;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1525 } else {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1526 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1527 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1528 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1529 after_branch_point =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1530 (ds_prev->ds_phys->ds_next_snap_obj != obj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1531
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1532 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1533 if (after_branch_point &&
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1534 ds_prev->ds_phys->ds_next_clones_obj != 0) {
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9390 diff changeset	1535 VERIFY3U(0, ==, zap_remove_int(mos,
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1536 ds_prev->ds_phys->ds_next_clones_obj, obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1537 if (ds->ds_phys->ds_next_snap_obj != 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1538 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1539 ds_prev->ds_phys->ds_next_clones_obj,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1540 ds->ds_phys->ds_next_snap_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1541 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1542 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1543 if (after_branch_point &&
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1544 ds->ds_phys->ds_next_snap_obj == 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1545 /* This clone is toast. */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1546 ASSERT(ds_prev->ds_phys->ds_num_children > 1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1547 ds_prev->ds_phys->ds_num_children--;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1548
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1549 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1550 * If the clone's origin has no other clones, no
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1551 * user holds, and has been marked for deferred
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1552 * deletion, then we should have done the necessary
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1553 * destroy setup for it.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1554 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1555 if (ds_prev->ds_phys->ds_num_children == 1 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1556 ds_prev->ds_userrefs == 0 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1557 DS_IS_DEFER_DESTROY(ds_prev)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1558 ASSERT3P(dsda->rm_origin, !=, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1559 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1560 ASSERT3P(dsda->rm_origin, ==, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1561 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1562 } else if (!after_branch_point) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1563 ds_prev->ds_phys->ds_next_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1564 ds->ds_phys->ds_next_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1565 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1566 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1567
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1568 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1569
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1570 if (ds->ds_phys->ds_next_snap_obj != 0) {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1571 blkptr_t bp;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1572 dsl_dataset_t *ds_next;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1573 uint64_t itor = 0;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1574 uint64_t old_unique;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1575 int64_t used = 0, compressed = 0, uncompressed = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1576
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1577 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1578 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1579 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1580
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1581 old_unique = dsl_dataset_unique(ds_next);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1582
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1583 dmu_buf_will_dirty(ds_next->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1584 ds_next->ds_phys->ds_prev_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1585 ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1586 ds_next->ds_phys->ds_prev_snap_txg =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1587 ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1588 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1589 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1590
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1591 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1592 * Transfer to our deadlist (which will become next's
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1593 * new deadlist) any entries from next's current
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1594 * deadlist which were born before prev, and free the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1595 * other entries.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1596 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1597 * XXX we're doing this long task with the config lock held
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1598 */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1599 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1600 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1601 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1602 &bp, tx));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1603 if (ds_prev && !after_branch_point &&
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1604 bp.blk_birth >
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1605 ds_prev->ds_phys->ds_prev_snap_txg) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1606 ds_prev->ds_phys->ds_unique_bytes +=
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	1607 bp_get_dasize(dp->dp_spa, &bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1608 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1609 } else {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	1610 used += bp_get_dasize(dp->dp_spa, &bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1611 compressed += BP_GET_PSIZE(&bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1612 uncompressed += BP_GET_UCSIZE(&bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1613 /* XXX check return value? */
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1614 (void) dsl_free(zio, dp, tx->tx_txg,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1615 &bp, NULL, NULL, ARC_NOWAIT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1616 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1617 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1618
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1619 ASSERT3U(used, ==, ds->ds_phys->ds_unique_bytes);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1620
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1621 /* change snapused */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1622 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1623 -used, -compressed, -uncompressed, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1624
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1625 /* free next's deadlist */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1626 bplist_close(&ds_next->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1627 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1628
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1629 /* set next's deadlist to our deadlist */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1630 bplist_close(&ds->ds_deadlist);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1631 ds_next->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1632 ds->ds_phys->ds_deadlist_obj;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1633 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1634 ds_next->ds_phys->ds_deadlist_obj));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1635 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1636
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1637 if (ds_next->ds_phys->ds_next_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1638 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1639 * Update next's unique to include blocks which
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1640 * were previously shared by only this snapshot
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1641 * and it. Those blocks will be born after the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1642 * prev snap and before this snap, and will have
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1643 * died after the next snap and before the one
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1644 * after that (ie. be on the snap after next's
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1645 * deadlist).
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1646 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1647 * XXX we're doing this long task with the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1648 * config lock held
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1649 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1650 dsl_dataset_t *ds_after_next;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1651 uint64_t space;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1652
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1653 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1654 ds_next->ds_phys->ds_next_snap_obj,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1655 FTAG, &ds_after_next));
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1656
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1657 VERIFY(0 ==
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1658 bplist_space_birthrange(&ds_after_next->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1659 ds->ds_phys->ds_prev_snap_txg,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1660 ds->ds_phys->ds_creation_txg, &space));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1661 ds_next->ds_phys->ds_unique_bytes += space;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1662
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1663 dsl_dataset_rele(ds_after_next, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1664 ASSERT3P(ds_next->ds_prev, ==, NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1665 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1666 ASSERT3P(ds_next->ds_prev, ==, ds);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1667 dsl_dataset_drop_ref(ds_next->ds_prev, ds_next);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1668 ds_next->ds_prev = NULL;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1669 if (ds_prev) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1670 VERIFY(0 == dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1671 ds->ds_phys->ds_prev_snap_obj,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1672 ds_next, &ds_next->ds_prev));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1673 }
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1674
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1675 dsl_dataset_recalc_head_uniq(ds_next);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1676
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1677 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1678 * Reduce the amount of our unconsmed refreservation
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1679 * being charged to our parent by the amount of
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1680 * new unique data we have gained.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1681 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1682 if (old_unique < ds_next->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1683 int64_t mrsdelta;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1684 uint64_t new_unique =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1685 ds_next->ds_phys->ds_unique_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1686
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1687 ASSERT(old_unique <= new_unique);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1688 mrsdelta = MIN(new_unique - old_unique,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1689 ds_next->ds_reserved - old_unique);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1690 dsl_dir_diduse_space(ds->ds_dir,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1691 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1692 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1693 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1694 dsl_dataset_rele(ds_next, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1695 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1696 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1697 * There's no next snapshot, so this is a head dataset.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1698 * Destroy the deadlist. Unless it's a clone, the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1699 * deadlist should be empty. (If it's a clone, it's
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1700 * safe to ignore the deadlist contents.)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1701 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1702 struct killarg ka;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1703
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1704 ASSERT(after_branch_point \|\| bplist_empty(&ds->ds_deadlist));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1705 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1706 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1707 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1708
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1709 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1710 * Free everything that we point to (that's born after
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1711 * the previous snapshot, if we are a clone)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1712 *
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1713 * NB: this should be very quick, because we already
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1714 * freed all the objects in open context.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1715 */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1716 ka.ds = ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1717 ka.zio = zio;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1718 ka.tx = tx;
7837 001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1719 err = traverse_dataset(ds, ds->ds_phys->ds_prev_snap_txg,
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	1720 TRAVERSE_POST, kill_blkptr, &ka);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1721 ASSERT3U(err, ==, 0);
9390 887948510f80 6826861 assertion failed in dsl_dataset_destroy_sync when "zfs destroy" old fs Chris Kirby <chris.kirby@sun.com> parents: 8779 diff changeset	1722 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) \|\|
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1723 ds->ds_phys->ds_unique_bytes == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1724 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1725
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1726 err = zio_wait(zio);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1727 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1728
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1729 if (ds->ds_dir->dd_phys->dd_head_dataset_obj == ds->ds_object) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1730 /* Erase the link in the dir */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1731 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1732 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1733 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1734 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1735 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1736 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1737 /* remove from snapshot namespace */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1738 dsl_dataset_t *ds_head;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1739 ASSERT(ds->ds_phys->ds_snapnames_zapobj == 0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1740 VERIFY(0 == dsl_dataset_hold_obj(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1741 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &ds_head));
2207 47efcb3433a7 6439370 assertion failures possible in dsl_dataset_destroy_sync() ahrens parents: 2199 diff changeset	1742 VERIFY(0 == dsl_dataset_get_snapname(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1743 #ifdef ZFS_DEBUG
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1744 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1745 uint64_t val;
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	1746
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1747 err = dsl_dataset_snap_lookup(ds_head,
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	1748 ds->ds_snapname, &val);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1749 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1750 ASSERT3U(val, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1751 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1752 #endif
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1753 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1754 ASSERT(err == 0);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1755 dsl_dataset_rele(ds_head, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1756 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1757
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1758 if (ds_prev && ds->ds_prev != ds_prev)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1759 dsl_dataset_rele(ds_prev, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1760
5094 71a3e95fb9e2 PSARC 2007/342 Enhanced ZFS Pool Properties lling parents: 4967 diff changeset	1761 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx);
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1762 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1763 cr, "dataset = %llu", ds->ds_object);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1764
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1765 if (ds->ds_phys->ds_next_clones_obj != 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1766 uint64_t count;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1767 ASSERT(0 == zap_count(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1768 ds->ds_phys->ds_next_clones_obj, &count) && count == 0);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1769 VERIFY(0 == dmu_object_free(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1770 ds->ds_phys->ds_next_clones_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1771 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1772 if (ds->ds_phys->ds_props_obj != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1773 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_props_obj, tx));
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1774 if (ds->ds_phys->ds_userrefs_obj != 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1775 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_userrefs_obj, tx));
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1776 dsl_dir_close(ds->ds_dir, ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1777 ds->ds_dir = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1778 dsl_dataset_drain_refs(ds, tag);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1779 VERIFY(0 == dmu_object_free(mos, obj, tx));
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1780
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1781 if (dsda->rm_origin) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1782 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1783 * Remove the origin of the clone we just destroyed.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1784 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1785 dsl_dataset_t *origin = ds->ds_prev;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1786 struct dsl_ds_destroyarg ndsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1787
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1788 ASSERT3P(origin, ==, dsda->rm_origin);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1789 if (origin->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1790 dmu_objset_evict(origin->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1791 origin->ds_objset = NULL;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1792 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1793
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1794 dsl_dataset_rele(ds->ds_prev, ds);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1795 ds->ds_prev = NULL;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1796
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1797 ndsda.ds = origin;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1798 dsl_dataset_destroy_sync(&ndsda, tag, cr, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	1799 }
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1800 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1801
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1802 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1803 dsl_dataset_snapshot_reserve_space(dsl_dataset_t ds, dmu_tx_t tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1804 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1805 uint64_t asize;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1806
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1807 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1808 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1809
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1810 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1811 * If there's an fs-only reservation, any blocks that might become
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1812 * owned by the snapshot dataset must be accommodated by space
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1813 * outside of the reservation.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1814 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1815 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1816 if (asize > dsl_dir_space_available(ds->ds_dir, NULL, 0, FALSE))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1817 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1818
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1819 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1820 * Propogate any reserved space for this snapshot to other
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1821 * snapshot checks in this sync group.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1822 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1823 if (asize > 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1824 dsl_dir_willuse_space(ds->ds_dir, asize, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1825
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1826 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1827 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1828
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1829 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1830 int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1831 dsl_dataset_snapshot_check(void arg1, void arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1832 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1833 dsl_dataset_t *ds = arg1;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1834 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1835 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1836 uint64_t value;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1837
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1838 /*
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1839 * We don't allow multiple snapshots of the same txg. If there
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1840 * is already one, try again.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1841 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1842 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1843 return (EAGAIN);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1844
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1845 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1846 * Check for conflicting name snapshot name.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1847 */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1848 err = dsl_dataset_snap_lookup(ds, snapname, &value);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1849 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1850 return (EEXIST);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1851 if (err != ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1852 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1853
3978 2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1854 /*
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1855 * 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	1856 * 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	1857 */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1858 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1859 return (ENAMETOOLONG);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1860
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1861 err = dsl_dataset_snapshot_reserve_space(ds, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1862 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1863 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1864
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1865 ds->ds_trysnap_txg = tx->tx_txg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1866 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1867 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1868
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1869 void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1870 dsl_dataset_snapshot_sync(void arg1, void arg2, cred_t cr, dmu_tx_t tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1871 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1872 dsl_dataset_t *ds = arg1;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1873 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1874 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1875 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1876 dsl_dataset_phys_t *dsphys;
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1877 uint64_t dsobj, crtxg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1878 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1879 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1880
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1881 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1882
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1883 /*
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1884 * The origin's ds_creation_txg has to be < TXG_INITIAL
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1885 */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1886 if (strcmp(snapname, ORIGIN_DIR_NAME) == 0)
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1887 crtxg = 1;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1888 else
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1889 crtxg = tx->tx_txg;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1890
928 36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets tabriz parents: 885 diff changeset	1891 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	1892 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1893 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1894 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1895 dsphys = dbuf->db_data;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1896 bzero(dsphys, sizeof (dsl_dataset_phys_t));
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1897 dsphys->ds_dir_obj = ds->ds_dir->dd_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1898 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1899 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1900 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1901 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1902 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1903 dsphys->ds_next_snap_obj = ds->ds_object;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1904 dsphys->ds_num_children = 1;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1905 dsphys->ds_creation_time = gethrestime_sec();
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1906 dsphys->ds_creation_txg = crtxg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1907 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1908 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1909 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1910 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	1911 dsphys->ds_flags = ds->ds_phys->ds_flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1912 dsphys->ds_bp = ds->ds_phys->ds_bp;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1913 dmu_buf_rele(dbuf, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1914
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1915 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1916 if (ds->ds_prev) {
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1917 uint64_t next_clones_obj =
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1918 ds->ds_prev->ds_phys->ds_next_clones_obj;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1919 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj ==
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1920 ds->ds_object \|\|
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1921 ds->ds_prev->ds_phys->ds_num_children > 1);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1922 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1923 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1924 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1925 ds->ds_prev->ds_phys->ds_creation_txg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1926 ds->ds_prev->ds_phys->ds_next_snap_obj = dsobj;
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1927 } else if (next_clones_obj != 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1928 VERIFY3U(0, ==, zap_remove_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1929 next_clones_obj, dsphys->ds_next_snap_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1930 VERIFY3U(0, ==, zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1931 next_clones_obj, dsobj, tx));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1932 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1933 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1934
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1935 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1936 * If we have a reference-reservation on this dataset, we will
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1937 * need to increase the amount of refreservation being charged
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1938 * since our unique space is going to zero.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1939 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1940 if (ds->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1941 int64_t add = MIN(dsl_dataset_unique(ds), ds->ds_reserved);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1942 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1943 add, 0, 0, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1944 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1945
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1946 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1947 dmu_buf_will_dirty(ds->ds_dbuf, tx);
5712 81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	1948 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1949 ds->ds_phys->ds_prev_snap_obj = dsobj;
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1950 ds->ds_phys->ds_prev_snap_txg = crtxg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1951 ds->ds_phys->ds_unique_bytes = 0;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1952 if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1953 ds->ds_phys->ds_flags \|= DS_FLAG_UNIQUE_ACCURATE;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1954 ds->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1955 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1956 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1957 ds->ds_phys->ds_deadlist_obj));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1958
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1959 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1960 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1961 snapname, 8, 1, &dsobj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1962 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1963
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1964 if (ds->ds_prev)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1965 dsl_dataset_drop_ref(ds->ds_prev, ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1966 VERIFY(0 == dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1967 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev));
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1968
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1969 dsl_pool_ds_snapshotted(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1970
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1971 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	1972 "dataset = %llu", dsobj);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1973 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1974
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1975 void
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1976 dsl_dataset_sync(dsl_dataset_t ds, zio_t zio, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1977 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1978 ASSERT(dmu_tx_is_syncing(tx));
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1979 ASSERT(ds->ds_objset != NULL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1980 ASSERT(ds->ds_phys->ds_next_snap_obj == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1981
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1982 /*
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1983 * in case we had to change ds_fsid_guid when we opened it,
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1984 * sync it out now.
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1985 */
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1986 dmu_buf_will_dirty(ds->ds_dbuf, tx);
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1987 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid;
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1988
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1989 dsl_dir_dirty(ds->ds_dir, tx);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	1990 dmu_objset_sync(ds->ds_objset, zio, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1991 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1992
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1993 void
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1994 dsl_dataset_stats(dsl_dataset_t ds, nvlist_t nv)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1995 {
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1996 uint64_t refd, avail, uobjs, aobjs;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1997
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1998 dsl_dir_stats(ds->ds_dir, nv);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1999
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2000 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2001 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_AVAILABLE, avail);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2002 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFERENCED, refd);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2003
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2004 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2005 ds->ds_phys->ds_creation_time);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2006 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2007 ds->ds_phys->ds_creation_txg);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2008 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2009 ds->ds_quota);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2010 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2011 ds->ds_reserved);
6643 3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user eschrock parents: 6502 diff changeset	2012 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_GUID,
3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user eschrock parents: 6502 diff changeset	2013 ds->ds_phys->ds_guid);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	2014 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERREFS, ds->ds_userrefs);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	2015 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_DEFER_DESTROY,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	2016 DS_IS_DEFER_DESTROY(ds) ? 1 : 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2017
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2018 if (ds->ds_phys->ds_next_snap_obj) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2019 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2020 * This is a snapshot; override the dd's space used with
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2021 * our unique space and compression ratio.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2022 */
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2023 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2024 ds->ds_phys->ds_unique_bytes);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2025 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2026 ds->ds_phys->ds_compressed_bytes == 0 ? 100 :
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2027 (ds->ds_phys->ds_uncompressed_bytes * 100 /
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2028 ds->ds_phys->ds_compressed_bytes));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2029 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2030 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2031
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2032 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2033 dsl_dataset_fast_stat(dsl_dataset_t ds, dmu_objset_stats_t stat)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2034 {
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2035 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2036 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2037 stat->dds_guid = ds->ds_phys->ds_guid;
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2038 if (ds->ds_phys->ds_next_snap_obj) {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2039 stat->dds_is_snapshot = B_TRUE;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2040 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1;
8228 51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups Eric Taylor <Eric.Taylor@Sun.COM> parents: 7837 diff changeset	2041 } else {
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups Eric Taylor <Eric.Taylor@Sun.COM> parents: 7837 diff changeset	2042 stat->dds_is_snapshot = B_FALSE;
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups Eric Taylor <Eric.Taylor@Sun.COM> parents: 7837 diff changeset	2043 stat->dds_num_clones = 0;
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2044 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2045
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2046 /* clone origin is really a dsl_dir thing... */
5446 51fbc14b301d 6421210 zfs rollback without unmounting ahrens parents: 5383 diff changeset	2047 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER);
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2048 if (dsl_dir_is_clone(ds->ds_dir)) {
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2049 dsl_dataset_t *ods;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2050
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2051 VERIFY(0 == dsl_dataset_get_ref(ds->ds_dir->dd_pool,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2052 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods));
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2053 dsl_dataset_name(ods, stat->dds_origin);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2054 dsl_dataset_drop_ref(ods, FTAG);
8228 51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups Eric Taylor <Eric.Taylor@Sun.COM> parents: 7837 diff changeset	2055 } else {
51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups Eric Taylor <Eric.Taylor@Sun.COM> parents: 7837 diff changeset	2056 stat->dds_origin[0] = '\0';
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2057 }
5446 51fbc14b301d 6421210 zfs rollback without unmounting ahrens parents: 5383 diff changeset	2058 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2059 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2060
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2061 uint64_t
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2062 dsl_dataset_fsid_guid(dsl_dataset_t *ds)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2063 {
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	2064 return (ds->ds_fsid_guid);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2065 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2066
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2067 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2068 dsl_dataset_space(dsl_dataset_t *ds,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2069 uint64_t refdbytesp, uint64_t availbytesp,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2070 uint64_t usedobjsp, uint64_t availobjsp)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2071 {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2072 *refdbytesp = ds->ds_phys->ds_used_bytes;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2073 *availbytesp = dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2074 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2075 *availbytesp += ds->ds_reserved - ds->ds_phys->ds_unique_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2076 if (ds->ds_quota != 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2077 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2078 * Adjust available bytes according to refquota
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2079 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2080 if (*refdbytesp < ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2081 availbytesp = MIN(availbytesp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2082 ds->ds_quota - *refdbytesp);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2083 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2084 *availbytesp = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2085 }
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2086 *usedobjsp = ds->ds_phys->ds_bp.blk_fill;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	2087 availobjsp = DN_MAX_OBJECT - usedobjsp;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2088 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2089
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2090 boolean_t
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2091 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	2092 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2093 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	2094
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2095 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) \|\|
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2096 dsl_pool_sync_context(dp));
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2097 if (ds->ds_prev == NULL)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2098 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2099 if (ds->ds_phys->ds_bp.blk_birth >
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2100 ds->ds_prev->ds_phys->ds_creation_txg)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2101 return (B_TRUE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2102 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2103 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2104
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2105 /* ARGSUSED */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2106 static int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2107 dsl_dataset_snapshot_rename_check(void arg1, void arg2, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2108 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2109 dsl_dataset_t *ds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2110 char *newsnapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2111 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2112 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2113 uint64_t val;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2114 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2115
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2116 err = dsl_dataset_hold_obj(dd->dd_pool,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2117 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2118 if (err)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2119 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2120
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2121 /* new name better not be in use */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2122 err = dsl_dataset_snap_lookup(hds, newsnapname, &val);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2123 dsl_dataset_rele(hds, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2124
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2125 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2126 err = EEXIST;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2127 else if (err == ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2128 err = 0;
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2129
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2130 /* dataset name + 1 for the "@" + the new snapshot name must fit */
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2131 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2132 err = ENAMETOOLONG;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2133
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2134 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2135 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2136
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2137 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2138 dsl_dataset_snapshot_rename_sync(void arg1, void arg2,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2139 cred_t cr, dmu_tx_t tx)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2140 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2141 dsl_dataset_t *ds = arg1;
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2142 const char *newsnapname = arg2;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2143 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2144 objset_t *mos = dd->dd_pool->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2145 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2146 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2147
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2148 ASSERT(ds->ds_phys->ds_next_snap_obj != 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2149
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2150 VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2151 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2152
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2153 VERIFY(0 == dsl_dataset_get_snapname(ds));
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2154 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2155 ASSERT3U(err, ==, 0);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2156 mutex_enter(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2157 (void) strcpy(ds->ds_snapname, newsnapname);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2158 mutex_exit(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2159 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2160 ds->ds_snapname, 8, 1, &ds->ds_object, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2161 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2162
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2163 spa_history_internal_log(LOG_DS_RENAME, dd->dd_pool->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2164 cr, "dataset = %llu", ds->ds_object);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2165 dsl_dataset_rele(hds, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2166 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2167
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2168 struct renamesnaparg {
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2169 dsl_sync_task_group_t *dstg;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2170 char failed[MAXPATHLEN];
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2171 char *oldsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2172 char *newsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2173 };
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2174
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2175 static int
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2176 dsl_snapshot_rename_one(char name, void arg)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2177 {
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2178 struct renamesnaparg *ra = arg;
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2179 dsl_dataset_t *ds = NULL;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2180 char *cp;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2181 int err;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2182
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2183 cp = name + strlen(name);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2184 *cp = '@';
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2185 (void) strcpy(cp + 1, ra->oldsnap);
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2186
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2187 /*
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2188 * For recursive snapshot renames the parent won't be changing
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2189 * so we just pass name for both the to/from argument.
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2190 */
7312 3992f9a413c2 6736061 recursive rename of snapshot fails if child snapshot doesn't exist Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7265 diff changeset	2191 err = zfs_secpolicy_rename_perms(name, name, CRED());
3992f9a413c2 6736061 recursive rename of snapshot fails if child snapshot doesn't exist Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7265 diff changeset	2192 if (err == ENOENT) {
3992f9a413c2 6736061 recursive rename of snapshot fails if child snapshot doesn't exist Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7265 diff changeset	2193 return (0);
3992f9a413c2 6736061 recursive rename of snapshot fails if child snapshot doesn't exist Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7265 diff changeset	2194 } else if (err) {
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2195 (void) strcpy(ra->failed, name);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2196 return (err);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2197 }
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2198
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2199 #ifdef _KERNEL
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2200 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2201 * For all filesystems undergoing rename, we'll need to unmount it.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2202 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2203 (void) zfs_unmount_snap(name, NULL);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2204 #endif
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2205 err = dsl_dataset_hold(name, ra->dstg, &ds);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2206 *cp = '\0';
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2207 if (err == ENOENT) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2208 return (0);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2209 } else if (err) {
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2210 (void) strcpy(ra->failed, name);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2211 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2212 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2213
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2214 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2215 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2216
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2217 return (0);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2218 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2219
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2220 static int
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2221 dsl_recursive_rename(char oldname, const char newname)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2222 {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2223 int err;
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2224 struct renamesnaparg *ra;
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2225 dsl_sync_task_t *dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2226 spa_t *spa;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2227 char cp, fsname = spa_strdup(oldname);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2228 int len = strlen(oldname);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2229
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2230 /* truncate the snapshot name to get the fsname */
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2231 cp = strchr(fsname, '@');
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2232 *cp = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2233
4603 c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups ahrens parents: 4577 diff changeset	2234 err = spa_open(fsname, &spa, FTAG);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2235 if (err) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2236 kmem_free(fsname, len + 1);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2237 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2238 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2239 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2240 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2241
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2242 ra->oldsnap = strchr(oldname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2243 ra->newsnap = strchr(newname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2244 *ra->failed = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2245
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2246 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2247 DS_FIND_CHILDREN);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2248 kmem_free(fsname, len + 1);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2249
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2250 if (err == 0) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2251 err = dsl_sync_task_group_wait(ra->dstg);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2252 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2253
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2254 for (dst = list_head(&ra->dstg->dstg_tasks); dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2255 dst = list_next(&ra->dstg->dstg_tasks, dst)) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2256 dsl_dataset_t *ds = dst->dst_arg1;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2257 if (dst->dst_err) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2258 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	2259 (void) strcat(ra->failed, "@");
1a9b4fbc0d2a 6479884 want 'zfs rename -r' to recursively rename snapshots (fix lint) mmusante parents: 4007 diff changeset	2260 (void) strcat(ra->failed, ra->newsnap);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2261 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2262 dsl_dataset_rele(ds, ra->dstg);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2263 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2264
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2265 if (err)
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2266 (void) strcpy(oldname, ra->failed);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2267
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2268 dsl_sync_task_group_destroy(ra->dstg);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2269 kmem_free(ra, sizeof (struct renamesnaparg));
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2270 spa_close(spa, FTAG);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2271 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2272 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2273
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	2274 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	2275 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	2276 {
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2277 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	2278
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2279 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	2280 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	2281
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2282 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	2283 }
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2284
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2285 #pragma weak dmu_objset_rename = dsl_dataset_rename
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2286 int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2287 dsl_dataset_rename(char oldname, const char newname, boolean_t recursive)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2288 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2289 dsl_dir_t *dd;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2290 dsl_dataset_t *ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2291 const char *tail;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2292 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2293
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2294 err = dsl_dir_open(oldname, FTAG, &dd, &tail);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	2295 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	2296 return (err);
8517 41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	2297 /*
41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	2298 * If there are more than 2 references there may be holds
41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	2299 * hanging around that haven't been cleared out yet.
41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	2300 */
41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	2301 if (dmu_buf_refcount(dd->dd_dbuf) > 2)
41a0783dde17 6784757 zfs rename occasionally fails with ebusy Eric Taylor <Eric.Taylor@Sun.COM> parents: 8228 diff changeset	2302 txg_wait_synced(dd->dd_pool, 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2303 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	2304 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	2305
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2306 /* if we're growing, validate child name lengths */
4569 e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2307 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	2308 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	2309 &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	2310
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2311 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	2312 err = dsl_dir_rename(dd, newname);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2313 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2314 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2315 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2316 if (tail[0] != '@') {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2317 /* the name ended in a nonexistant component */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2318 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2319 return (ENOENT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2320 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2321
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2322 dsl_dir_close(dd, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2323
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2324 /* new name must be snapshot in same filesystem */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2325 tail = strchr(newname, '@');
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2326 if (tail == NULL)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2327 return (EINVAL);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2328 tail++;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2329 if (strncmp(oldname, newname, tail - newname) != 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2330 return (EXDEV);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2331
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2332 if (recursive) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2333 err = dsl_recursive_rename(oldname, newname);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2334 } else {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2335 err = dsl_dataset_hold(oldname, FTAG, &ds);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2336 if (err)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2337 return (err);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2338
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2339 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2340 dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2341 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2342
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2343 dsl_dataset_rele(ds, FTAG);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2344 }
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2345
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2346 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2347 }
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2348
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2349 struct promotenode {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2350 list_node_t link;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2351 dsl_dataset_t *ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2352 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2353
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2354 struct promotearg {
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2355 list_t shared_snaps, origin_snaps, clone_snaps;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2356 dsl_dataset_t origin_origin, origin_head;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2357 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2358 };
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2359
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2360 static int snaplist_space(list_t l, uint64_t mintxg, uint64_t spacep);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2361
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2362 /* ARGSUSED */
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2363 static int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2364 dsl_dataset_promote_check(void arg1, void arg2, dmu_tx_t *tx)
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2365 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2366 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2367 struct promotearg *pa = arg2;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2368 struct promotenode *snap = list_head(&pa->shared_snaps);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2369 dsl_dataset_t *origin_ds = snap->ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2370 int err;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2371
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2372 /* Check that it is a real clone */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2373 if (!dsl_dir_is_clone(hds->ds_dir))
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2374 return (EINVAL);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2375
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2376 /* Since this is so expensive, don't do the preliminary check */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2377 if (!dmu_tx_is_syncing(tx))
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2378 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2379
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2380 if (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2381 return (EXDEV);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2382
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2383 /* compute origin's new unique space */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2384 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2385 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2386 err = bplist_space_birthrange(&snap->ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2387 origin_ds->ds_phys->ds_prev_snap_txg, UINT64_MAX, &pa->unique);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2388 if (err)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2389 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2390
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2391 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2392 * Walk the snapshots that we are moving
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2393 *
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2394 * Compute space to transfer. Consider the incremental changes
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2395 * to used for each snapshot:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2396 * (my used) = (prev's used) + (blocks born) - (blocks killed)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2397 * So each snapshot gave birth to:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2398 * (blocks born) = (my used) - (prev's used) + (blocks killed)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2399 * So a sequence would look like:
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2400 * (uN - u(N-1) + kN) + ... + (u1 - u0 + k1) + (u0 - 0 + k0)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2401 * Which simplifies to:
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2402 * uN + kN + kN-1 + ... + k1 + k0
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2403 * Note however, if we stop before we reach the ORIGIN we get:
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2404 * uN + kN + kN-1 + ... + kM - uM-1
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2405 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2406 pa->used = origin_ds->ds_phys->ds_used_bytes;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2407 pa->comp = origin_ds->ds_phys->ds_compressed_bytes;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2408 pa->uncomp = origin_ds->ds_phys->ds_uncompressed_bytes;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2409 for (snap = list_head(&pa->shared_snaps); snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2410 snap = list_next(&pa->shared_snaps, snap)) {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2411 uint64_t val, dlused, dlcomp, dluncomp;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2412 dsl_dataset_t *ds = snap->ds;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2413
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2414 /* Check that the snapshot name does not conflict */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2415 VERIFY(0 == dsl_dataset_get_snapname(ds));
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2416 err = dsl_dataset_snap_lookup(hds, ds->ds_snapname, &val);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2417 if (err == 0)
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2418 return (EEXIST);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2419 if (err != ENOENT)
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2420 return (err);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2421
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2422 /* The very first snapshot does not have a deadlist */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2423 if (ds->ds_phys->ds_prev_snap_obj == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2424 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2425
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2426 if (err = bplist_space(&ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2427 &dlused, &dlcomp, &dluncomp))
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2428 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2429 pa->used += dlused;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2430 pa->comp += dlcomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2431 pa->uncomp += dluncomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2432 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2433
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2434 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2435 * If we are a clone of a clone then we never reached ORIGIN,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2436 * so we need to subtract out the clone origin's used space.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2437 */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2438 if (pa->origin_origin) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2439 pa->used -= pa->origin_origin->ds_phys->ds_used_bytes;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2440 pa->comp -= pa->origin_origin->ds_phys->ds_compressed_bytes;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2441 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2442 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2443
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2444 /* Check that there is enough space here */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2445 err = dsl_dir_transfer_possible(origin_ds->ds_dir, hds->ds_dir,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2446 pa->used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2447 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2448 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2449
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2450 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2451 * Compute the amounts of space that will be used by snapshots
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2452 * after the promotion (for both origin and clone). For each,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2453 * it is the amount of space that will be on all of their
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2454 * deadlists (that was not born before their new origin).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2455 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2456 if (hds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2457 uint64_t space;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2458
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2459 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2460 * Note, typically this will not be a clone of a clone,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2461 * so snap->ds->ds_origin_txg will be < TXG_INITIAL, so
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2462 * these snaplist_space() -> bplist_space_birthrange()
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2463 * calls will be fast because they do not have to
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2464 * iterate over all bps.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2465 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2466 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2467 err = snaplist_space(&pa->shared_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2468 snap->ds->ds_origin_txg, &pa->cloneusedsnap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2469 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2470 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2471
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2472 err = snaplist_space(&pa->clone_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2473 snap->ds->ds_origin_txg, &space);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2474 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2475 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2476 pa->cloneusedsnap += space;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2477 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2478 if (origin_ds->ds_dir->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2479 err = snaplist_space(&pa->origin_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2480 origin_ds->ds_phys->ds_creation_txg, &pa->originusedsnap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2481 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2482 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2483 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2484
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2485 return (0);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2486 }
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2487
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2488 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2489 dsl_dataset_promote_sync(void arg1, void arg2, cred_t cr, dmu_tx_t tx)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2490 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2491 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2492 struct promotearg *pa = arg2;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2493 struct promotenode *snap = list_head(&pa->shared_snaps);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2494 dsl_dataset_t *origin_ds = snap->ds;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2495 dsl_dataset_t *origin_head;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2496 dsl_dir_t *dd = hds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2497 dsl_pool_t *dp = hds->ds_dir->dd_pool;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2498 dsl_dir_t *odd = NULL;
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2499 uint64_t oldnext_obj;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2500 int64_t delta;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2501
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2502 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2503
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2504 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2505 origin_head = snap->ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2506
2417 694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	2507 /*
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2508 * We need to explicitly open odd, since origin_ds's dd will be
2417 694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	2509 * changing.
694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	2510 */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2511 VERIFY(0 == dsl_dir_open_obj(dp, origin_ds->ds_dir->dd_object,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2512 NULL, FTAG, &odd));
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2513
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2514 /* change origin's next snap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2515 dmu_buf_will_dirty(origin_ds->ds_dbuf, tx);
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2516 oldnext_obj = origin_ds->ds_phys->ds_next_snap_obj;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2517 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2518 ASSERT3U(snap->ds->ds_phys->ds_prev_snap_obj, ==, origin_ds->ds_object);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2519 origin_ds->ds_phys->ds_next_snap_obj = snap->ds->ds_object;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2520
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2521 /* change the origin's next clone */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2522 if (origin_ds->ds_phys->ds_next_clones_obj) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2523 VERIFY3U(0, ==, zap_remove_int(dp->dp_meta_objset,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2524 origin_ds->ds_phys->ds_next_clones_obj,
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2525 origin_ds->ds_phys->ds_next_snap_obj, tx));
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2526 VERIFY3U(0, ==, zap_add_int(dp->dp_meta_objset,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2527 origin_ds->ds_phys->ds_next_clones_obj,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2528 oldnext_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2529 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2530
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2531 /* change origin */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2532 dmu_buf_will_dirty(dd->dd_dbuf, tx);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2533 ASSERT3U(dd->dd_phys->dd_origin_obj, ==, origin_ds->ds_object);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2534 dd->dd_phys->dd_origin_obj = odd->dd_phys->dd_origin_obj;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2535 hds->ds_origin_txg = origin_head->ds_origin_txg;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2536 dmu_buf_will_dirty(odd->dd_dbuf, tx);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2537 odd->dd_phys->dd_origin_obj = origin_ds->ds_object;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2538 origin_head->ds_origin_txg = origin_ds->ds_phys->ds_creation_txg;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2539
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2540 /* move snapshots to this dir */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2541 for (snap = list_head(&pa->shared_snaps); snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2542 snap = list_next(&pa->shared_snaps, snap)) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2543 dsl_dataset_t *ds = snap->ds;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2544
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2545 /* unregister props as dsl_dir is changing */
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2546 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2547 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2548 ds->ds_objset = NULL;
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2549 }
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2550 /* move snap name entry */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2551 VERIFY(0 == dsl_dataset_get_snapname(ds));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2552 VERIFY(0 == dsl_dataset_snap_remove(origin_head,
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2553 ds->ds_snapname, tx));
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2554 VERIFY(0 == zap_add(dp->dp_meta_objset,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2555 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname,
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2556 8, 1, &ds->ds_object, tx));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2557 /* change containing dsl_dir */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2558 dmu_buf_will_dirty(ds->ds_dbuf, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2559 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2560 ds->ds_phys->ds_dir_obj = dd->dd_object;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2561 ASSERT3P(ds->ds_dir, ==, odd);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2562 dsl_dir_close(ds->ds_dir, ds);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2563 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2564 NULL, ds, &ds->ds_dir));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2565
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2566 ASSERT3U(dsl_prop_numcb(ds), ==, 0);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2567 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2568
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2569 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2570 * Change space accounting.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2571 * Note, pa->*usedsnap and dd_used_breakdown[SNAP] will either
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2572 * both be valid, or both be 0 (resulting in delta == 0). This
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2573 * is true for each of {clone,origin} independently.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2574 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2575
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2576 delta = pa->cloneusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2577 dd->dd_phys->dd_used_breakdown[DD_USED_SNAP];
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2578 ASSERT3S(delta, >=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2579 ASSERT3U(pa->used, >=, delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2580 dsl_dir_diduse_space(dd, DD_USED_SNAP, delta, 0, 0, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2581 dsl_dir_diduse_space(dd, DD_USED_HEAD,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2582 pa->used - delta, pa->comp, pa->uncomp, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2583
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2584 delta = pa->originusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2585 odd->dd_phys->dd_used_breakdown[DD_USED_SNAP];
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2586 ASSERT3S(delta, <=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2587 ASSERT3U(pa->used, >=, -delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2588 dsl_dir_diduse_space(odd, DD_USED_SNAP, delta, 0, 0, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2589 dsl_dir_diduse_space(odd, DD_USED_HEAD,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2590 -pa->used - delta, -pa->comp, -pa->uncomp, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2591
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2592 origin_ds->ds_phys->ds_unique_bytes = pa->unique;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2593
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2594 /* log history record */
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2595 spa_history_internal_log(LOG_DS_PROMOTE, dd->dd_pool->dp_spa, tx,
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2596 cr, "dataset = %llu", hds->ds_object);
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2597
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2598 dsl_dir_close(odd, FTAG);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2599 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2600
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2601 static char *snaplist_tag = "snaplist";
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2602 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2603 * Make a list of dsl_dataset_t's for the snapshots between first_obj
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2604 * (exclusive) and last_obj (inclusive). The list will be in reverse
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2605 * order (last_obj will be the list_head()). If first_obj == 0, do all
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2606 * snapshots back to this dataset's origin.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2607 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2608 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2609 snaplist_make(dsl_pool_t *dp, boolean_t own,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2610 uint64_t first_obj, uint64_t last_obj, list_t *l)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2611 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2612 uint64_t obj = last_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2613
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2614 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2615
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2616 list_create(l, sizeof (struct promotenode),
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2617 offsetof(struct promotenode, link));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2618
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2619 while (obj != first_obj) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2620 dsl_dataset_t *ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2621 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2622 int err;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2623
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2624 if (own) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2625 err = dsl_dataset_own_obj(dp, obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2626 0, snaplist_tag, &ds);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2627 if (err == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2628 dsl_dataset_make_exclusive(ds, snaplist_tag);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2629 } else {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2630 err = dsl_dataset_hold_obj(dp, obj, snaplist_tag, &ds);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2631 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2632 if (err == ENOENT) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2633 /* lost race with snapshot destroy */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2634 struct promotenode *last = list_tail(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2635 ASSERT(obj != last->ds->ds_phys->ds_prev_snap_obj);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2636 obj = last->ds->ds_phys->ds_prev_snap_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2637 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2638 } else if (err) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2639 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2640 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2641
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2642 if (first_obj == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2643 first_obj = ds->ds_dir->dd_phys->dd_origin_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2644
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2645 snap = kmem_alloc(sizeof (struct promotenode), KM_SLEEP);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2646 snap->ds = ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2647 list_insert_tail(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2648 obj = ds->ds_phys->ds_prev_snap_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2649 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2650
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2651 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2652 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2653
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2654 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2655 snaplist_space(list_t l, uint64_t mintxg, uint64_t spacep)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2656 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2657 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2658
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2659 *spacep = 0;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2660 for (snap = list_head(l); snap; snap = list_next(l, snap)) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2661 uint64_t used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2662 int err = bplist_space_birthrange(&snap->ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2663 mintxg, UINT64_MAX, &used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2664 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2665 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2666 *spacep += used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2667 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2668 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2669 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2670
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2671 static void
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2672 snaplist_destroy(list_t *l, boolean_t own)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2673 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2674 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2675
8779 f164e0e90508 6784924 panic while ludelete (zfs destroy) Mark J Musante <Mark.Musante@Sun.COM> parents: 8746 diff changeset	2676 if (!l \|\| !list_link_active(&l->list_head))
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2677 return;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2678
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2679 while ((snap = list_tail(l)) != NULL) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2680 list_remove(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2681 if (own)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2682 dsl_dataset_disown(snap->ds, snaplist_tag);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2683 else
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2684 dsl_dataset_rele(snap->ds, snaplist_tag);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2685 kmem_free(snap, sizeof (struct promotenode));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2686 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2687 list_destroy(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2688 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2689
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2690 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2691 * Promote a clone. Nomenclature note:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2692 * "clone" or "cds": the original clone which is being promoted
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2693 * "origin" or "ods": the snapshot which is originally clone's origin
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2694 * "origin head" or "ohds": the dataset which is the head
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2695 * (filesystem/volume) for the origin
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2696 * "origin origin": the origin of the origin's filesystem (typically
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2697 * NULL, indicating that the clone is not a clone of a clone).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2698 */
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2699 int
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2700 dsl_dataset_promote(const char *name)
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2701 {
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2702 dsl_dataset_t *ds;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2703 dsl_dir_t *dd;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2704 dsl_pool_t *dp;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2705 dmu_object_info_t doi;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2706 struct promotearg pa = { 0 };
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2707 struct promotenode *snap;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2708 int err;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2709
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2710 err = dsl_dataset_hold(name, FTAG, &ds);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2711 if (err)
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2712 return (err);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2713 dd = ds->ds_dir;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2714 dp = dd->dd_pool;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2715
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2716 err = dmu_object_info(dp->dp_meta_objset,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2717 ds->ds_phys->ds_snapnames_zapobj, &doi);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2718 if (err) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2719 dsl_dataset_rele(ds, FTAG);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2720 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2721 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2722
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2723 if (dsl_dataset_is_snapshot(ds) \|\| dd->dd_phys->dd_origin_obj == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2724 dsl_dataset_rele(ds, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2725 return (EINVAL);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2726 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2727
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2728 /*
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2729 * We are going to inherit all the snapshots taken before our
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2730 * origin (i.e., our new origin will be our parent's origin).
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2731 * Take ownership of them so that we can rename them into our
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2732 * namespace.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2733 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2734 rw_enter(&dp->dp_config_rwlock, RW_READER);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2735
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2736 err = snaplist_make(dp, B_TRUE, 0, dd->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2737 &pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2738 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2739 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2740
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2741 err = snaplist_make(dp, B_FALSE, 0, ds->ds_object, &pa.clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2742 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2743 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2744
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2745 snap = list_head(&pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2746 ASSERT3U(snap->ds->ds_object, ==, dd->dd_phys->dd_origin_obj);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2747 err = snaplist_make(dp, B_FALSE, dd->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2748 snap->ds->ds_dir->dd_phys->dd_head_dataset_obj, &pa.origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2749 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2750 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2751
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2752 if (dsl_dir_is_clone(snap->ds->ds_dir)) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2753 err = dsl_dataset_own_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2754 snap->ds->ds_dir->dd_phys->dd_origin_obj,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2755 0, FTAG, &pa.origin_origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2756 if (err != 0)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2757 goto out;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2758 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2759
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2760 out:
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2761 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2762
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2763 /*
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2764 * Add in 128x the snapnames zapobj size, since we will be moving
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2765 * a bunch of snapnames to the promoted ds, and dirtying their
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2766 * bonus buffers.
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2767 */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2768 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2769 err = dsl_sync_task_do(dp, dsl_dataset_promote_check,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2770 dsl_dataset_promote_sync, ds, &pa,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2771 2 + 2 * doi.doi_physical_blks);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2772 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2773
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2774 snaplist_destroy(&pa.shared_snaps, B_TRUE);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2775 snaplist_destroy(&pa.clone_snaps, B_FALSE);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2776 snaplist_destroy(&pa.origin_snaps, B_FALSE);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2777 if (pa.origin_origin)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2778 dsl_dataset_disown(pa.origin_origin, FTAG);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2779 dsl_dataset_rele(ds, FTAG);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2780 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2781 }
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2782
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2783 struct cloneswaparg {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2784 dsl_dataset_t cds; / clone dataset */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2785 dsl_dataset_t ohds; / origin's head dataset */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2786 boolean_t force;
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2787 int64_t unused_refres_delta; /* change in unconsumed refreservation */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2788 };
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2789
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2790 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2791 static int
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2792 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	2793 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2794 struct cloneswaparg *csa = arg1;
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2795
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2796 /* they should both be heads */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2797 if (dsl_dataset_is_snapshot(csa->cds) \|\|
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2798 dsl_dataset_is_snapshot(csa->ohds))
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2799 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2800
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2801 /* the branch point should be just before them */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2802 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	2803 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2804
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2805 /* cds should be the clone (unless they are unrelated) */
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2806 if (csa->cds->ds_prev != NULL &&
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2807 csa->cds->ds_prev != csa->cds->ds_dir->dd_pool->dp_origin_snap &&
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2808 csa->ohds->ds_object !=
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2809 csa->cds->ds_prev->ds_phys->ds_next_snap_obj)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2810 return (EINVAL);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2811
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2812 /* the clone should be a child of the origin */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2813 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2814 return (EINVAL);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2815
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2816 /* ohds shouldn't be modified unless 'force' */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2817 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds))
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2818 return (ETXTBSY);
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2819
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2820 /* adjust amount of any unconsumed refreservation */
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2821 csa->unused_refres_delta =
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2822 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2823 csa->ohds->ds_phys->ds_unique_bytes) -
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2824 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2825 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2826
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2827 if (csa->unused_refres_delta > 0 &&
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2828 csa->unused_refres_delta >
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2829 dsl_dir_space_available(csa->ohds->ds_dir, NULL, 0, TRUE))
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2830 return (ENOSPC);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2831
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2832 return (0);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2833 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2834
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2835 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2836 static void
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2837 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	2838 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2839 struct cloneswaparg *csa = arg1;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2840 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	2841
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2842 ASSERT(csa->cds->ds_reserved == 0);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2843 ASSERT(csa->cds->ds_quota == csa->ohds->ds_quota);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2844
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2845 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2846 dmu_buf_will_dirty(csa->ohds->ds_dbuf, tx);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2847
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2848 if (csa->cds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2849 dmu_objset_evict(csa->cds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2850 csa->cds->ds_objset = NULL;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2851 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2852
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2853 if (csa->ohds->ds_objset != NULL) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2854 dmu_objset_evict(csa->ohds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	2855 csa->ohds->ds_objset = NULL;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2856 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2857
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2858 /*
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2859 * Reset origin's unique bytes, if it exists.
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2860 */
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2861 if (csa->cds->ds_prev) {
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2862 dsl_dataset_t *origin = csa->cds->ds_prev;
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2863 dmu_buf_will_dirty(origin->ds_dbuf, tx);
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2864 VERIFY(0 == bplist_space_birthrange(&csa->cds->ds_deadlist,
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2865 origin->ds_phys->ds_prev_snap_txg, UINT64_MAX,
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2866 &origin->ds_phys->ds_unique_bytes));
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2867 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2868
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2869 /* swap blkptrs */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2870 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2871 blkptr_t tmp;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2872 tmp = csa->ohds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2873 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2874 csa->cds->ds_phys->ds_bp = tmp;
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2875 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2876
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2877 /* set dd__bytes /
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2878 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2879 int64_t dused, dcomp, duncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2880 uint64_t cdl_used, cdl_comp, cdl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2881 uint64_t odl_used, odl_comp, odl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2882
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2883 ASSERT3U(csa->cds->ds_dir->dd_phys->
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2884 dd_used_breakdown[DD_USED_SNAP], ==, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2885
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2886 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	2887 &cdl_comp, &cdl_uncomp));
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2888 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	2889 &odl_comp, &odl_uncomp));
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2890
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2891 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used -
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2892 (csa->ohds->ds_phys->ds_used_bytes + odl_used);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2893 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp -
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2894 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2895 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes +
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2896 cdl_uncomp -
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2897 (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	2898
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2899 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_HEAD,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2900 dused, dcomp, duncomp, tx);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2901 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2902 -dused, -dcomp, -duncomp, tx);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2903
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2904 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2905 * The difference in the space used by snapshots is the
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2906 * difference in snapshot space due to the head's
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2907 * deadlist (since that's the only thing that's
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2908 * changing that affects the snapused).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2909 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2910 VERIFY(0 == bplist_space_birthrange(&csa->cds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2911 csa->ohds->ds_origin_txg, UINT64_MAX, &cdl_used));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2912 VERIFY(0 == bplist_space_birthrange(&csa->ohds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2913 csa->ohds->ds_origin_txg, UINT64_MAX, &odl_used));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2914 dsl_dir_transfer_space(csa->ohds->ds_dir, cdl_used - odl_used,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2915 DD_USED_HEAD, DD_USED_SNAP, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2916 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2917
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2918 #define SWITCH64(x, y) \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2919 { \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2920 uint64_t __tmp = (x); \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2921 (x) = (y); \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2922 (y) = __tmp; \
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2923 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2924
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2925 /* swap ds__bytes /
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2926 SWITCH64(csa->ohds->ds_phys->ds_used_bytes,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2927 csa->cds->ds_phys->ds_used_bytes);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2928 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2929 csa->cds->ds_phys->ds_compressed_bytes);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2930 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2931 csa->cds->ds_phys->ds_uncompressed_bytes);
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2932 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2933 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2934
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2935 /* apply any parent delta for change in unconsumed refreservation */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2936 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_REFRSRV,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2937 csa->unused_refres_delta, 0, 0, tx);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2938
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2939 /* swap deadlists */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2940 bplist_close(&csa->cds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2941 bplist_close(&csa->ohds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2942 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2943 csa->cds->ds_phys->ds_deadlist_obj);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2944 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2945 csa->cds->ds_phys->ds_deadlist_obj));
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2946 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2947 csa->ohds->ds_phys->ds_deadlist_obj));
7837 001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	2948
001de5627df3 6333409 traversal code should be able to issue multiple reads in parallel Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7754 diff changeset	2949 dsl_pool_ds_clone_swapped(csa->ohds, csa->cds, tx);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2950 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2951
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2952 /*
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2953 * Swap 'clone' with its origin head datasets. Used at the end of "zfs
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2954 * recv" into an existing fs to swizzle the file system to the new
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2955 * version, and by "zfs rollback". Can also be used to swap two
a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	2956 * independent head datasets if neither has any snapshots.
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2957 */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2958 int
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2959 dsl_dataset_clone_swap(dsl_dataset_t clone, dsl_dataset_t origin_head,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2960 boolean_t force)
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2961 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2962 struct cloneswaparg csa;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2963 int error;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2964
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2965 ASSERT(clone->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2966 ASSERT(origin_head->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2967 retry:
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2968 /* Need exclusive access for the swap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2969 rw_enter(&clone->ds_rwlock, RW_WRITER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2970 if (!rw_tryenter(&origin_head->ds_rwlock, RW_WRITER)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2971 rw_exit(&clone->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2972 rw_enter(&origin_head->ds_rwlock, RW_WRITER);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2973 if (!rw_tryenter(&clone->ds_rwlock, RW_WRITER)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2974 rw_exit(&origin_head->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2975 goto retry;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2976 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2977 }
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2978 csa.cds = clone;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2979 csa.ohds = origin_head;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2980 csa.force = force;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2981 error = dsl_sync_task_do(clone->ds_dir->dd_pool,
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2982 dsl_dataset_clone_swap_check,
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2983 dsl_dataset_clone_swap_sync, &csa, NULL, 9);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2984 return (error);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2985 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2986
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2987 /*
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2988 * Given a pool name and a dataset object number in that pool,
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2989 * return the name of that dataset.
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2990 */
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2991 int
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2992 dsl_dsobj_to_dsname(char pname, uint64_t obj, char buf)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2993 {
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2994 spa_t *spa;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2995 dsl_pool_t *dp;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2996 dsl_dataset_t *ds;
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2997 int error;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2998
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2999 if ((error = spa_open(pname, &spa, FTAG)) != 0)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3000 return (error);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3001 dp = spa_get_dsl(spa);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3002 rw_enter(&dp->dp_config_rwlock, RW_READER);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3003 if ((error = dsl_dataset_hold_obj(dp, obj, FTAG, &ds)) == 0) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3004 dsl_dataset_name(ds, buf);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3005 dsl_dataset_rele(ds, FTAG);
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3006 }
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3007 rw_exit(&dp->dp_config_rwlock);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3008 spa_close(spa, FTAG);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3009
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3010 return (error);
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	3011 }
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3012
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3013 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3014 dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3015 uint64_t asize, uint64_t inflight, uint64_t used, uint64_t ref_rsrv)
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3016 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3017 int error = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3018
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3019 ASSERT3S(asize, >, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3020
5831 48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3021 /*
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3022 * *ref_rsrv is the portion of asize that will come from any
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3023 * unconsumed refreservation space.
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3024 */
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3025 *ref_rsrv = 0;
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3026
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3027 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3028 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3029 * Make a space adjustment for reserved bytes.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3030 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3031 if (ds->ds_reserved > ds->ds_phys->ds_unique_bytes) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3032 ASSERT3U(*used, >=,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3033 ds->ds_reserved - ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3034 *used -= (ds->ds_reserved - ds->ds_phys->ds_unique_bytes);
5831 48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3035 *ref_rsrv =
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	3036 asize - MIN(asize, parent_delta(ds, asize + inflight));
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3037 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3038
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3039 if (!check_quota \|\| ds->ds_quota == 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3040 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3041 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3042 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3043 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3044 * If they are requesting more space, and our current estimate
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3045 * is over quota, they get to try again unless the actual
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3046 * on-disk is over quota and there are no pending changes (which
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3047 * may free up space for us).
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3048 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3049 if (ds->ds_phys->ds_used_bytes + inflight >= ds->ds_quota) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3050 if (inflight > 0 \|\| ds->ds_phys->ds_used_bytes < ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3051 error = ERESTART;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3052 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3053 error = EDQUOT;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3054 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3055 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3056
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3057 return (error);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3058 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3059
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3060 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3061 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3062 dsl_dataset_set_quota_check(void arg1, void arg2, dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3063 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3064 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3065 uint64_t *quotap = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3066 uint64_t new_quota = *quotap;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3067
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3068 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_REFQUOTA)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3069 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3070
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3071 if (new_quota == 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3072 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3073
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3074 if (new_quota < ds->ds_phys->ds_used_bytes \|\|
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3075 new_quota < ds->ds_reserved)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3076 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3077
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3078 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3079 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3080
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3081 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3082 void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3083 dsl_dataset_set_quota_sync(void arg1, void arg2, cred_t cr, dmu_tx_t tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3084 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3085 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3086 uint64_t *quotap = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3087 uint64_t new_quota = *quotap;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3088
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3089 dmu_buf_will_dirty(ds->ds_dbuf, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3090
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3091 ds->ds_quota = new_quota;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3092
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3093 dsl_dir_prop_set_uint64_sync(ds->ds_dir, "refquota", new_quota, cr, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3094
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3095 spa_history_internal_log(LOG_DS_REFQUOTA, ds->ds_dir->dd_pool->dp_spa,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3096 tx, cr, "%lld dataset = %llu ",
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3097 (longlong_t)new_quota, ds->ds_object);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3098 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3099
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3100 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3101 dsl_dataset_set_quota(const char *dsname, uint64_t quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3102 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3103 dsl_dataset_t *ds;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3104 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3105
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3106 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3107 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3108 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3109
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3110 if (quota != ds->ds_quota) {
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3111 /*
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3112 * If someone removes a file, then tries to set the quota, we
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3113 * want to make sure the file freeing takes effect.
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3114 */
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3115 txg_wait_open(ds->ds_dir->dd_pool, 0);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3116
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3117 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3118 dsl_dataset_set_quota_check, dsl_dataset_set_quota_sync,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3119 ds, &quota, 0);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3120 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3121 dsl_dataset_rele(ds, FTAG);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3122 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3123 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3124
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3125 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3126 dsl_dataset_set_reservation_check(void arg1, void arg2, dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3127 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3128 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3129 uint64_t *reservationp = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3130 uint64_t new_reservation = *reservationp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3131 uint64_t unique;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3132
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3133 if (spa_version(ds->ds_dir->dd_pool->dp_spa) <
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3134 SPA_VERSION_REFRESERVATION)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3135 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3136
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3137 if (dsl_dataset_is_snapshot(ds))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3138 return (EINVAL);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3139
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3140 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3141 * If we are doing the preliminary check in open context, the
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3142 * space estimates may be inaccurate.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3143 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3144 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3145 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3146
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3147 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3148 unique = dsl_dataset_unique(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3149 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3150
8525 e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3151 if (MAX(unique, new_reservation) > MAX(unique, ds->ds_reserved)) {
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3152 uint64_t delta = MAX(unique, new_reservation) -
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3153 MAX(unique, ds->ds_reserved);
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3154
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3155 if (delta > dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE))
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3156 return (ENOSPC);
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3157 if (ds->ds_quota > 0 &&
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3158 new_reservation > ds->ds_quota)
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3159 return (ENOSPC);
e0e0e525d0f8 6788830 set large value to reservation cause core dump Eric Schrock <Eric.Schrock@Sun.COM> parents: 8517 diff changeset	3160 }
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3161
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3162 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3163 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3164
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3165 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3166 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3167 dsl_dataset_set_reservation_sync(void arg1, void arg2, cred_t *cr,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3168 dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3169 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3170 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3171 uint64_t *reservationp = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3172 uint64_t new_reservation = *reservationp;
7595 2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3173 uint64_t unique;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3174 int64_t delta;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3175
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3176 dmu_buf_will_dirty(ds->ds_dbuf, tx);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3177
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3178 mutex_enter(&ds->ds_dir->dd_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3179 mutex_enter(&ds->ds_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3180 unique = dsl_dataset_unique(ds);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3181 delta = MAX(0, (int64_t)(new_reservation - unique)) -
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3182 MAX(0, (int64_t)(ds->ds_reserved - unique));
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3183 ds->ds_reserved = new_reservation;
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3184 mutex_exit(&ds->ds_lock);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3185
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3186 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, delta, 0, 0, tx);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3187 mutex_exit(&ds->ds_dir->dd_lock);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3188 dsl_dir_prop_set_uint64_sync(ds->ds_dir, "refreservation",
7595 2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3189 new_reservation, cr, tx);
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3190
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3191 spa_history_internal_log(LOG_DS_REFRESERV,
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3192 ds->ds_dir->dd_pool->dp_spa, tx, cr, "%lld dataset = %llu",
2ff5700c7efc 6747355 finish closing race condition when setting refreservation Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7525 diff changeset	3193 (longlong_t)new_reservation, ds->ds_object);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3194 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3195
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3196 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3197 dsl_dataset_set_reservation(const char *dsname, uint64_t reservation)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3198 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3199 dsl_dataset_t *ds;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3200 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3201
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3202 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3203 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3204 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3205
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3206 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3207 dsl_dataset_set_reservation_check,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3208 dsl_dataset_set_reservation_sync, ds, &reservation, 0);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3209 dsl_dataset_rele(ds, FTAG);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3210 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3211 }
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3212
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3213 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3214 dsl_dataset_user_hold_check(void arg1, void arg2, dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3215 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3216 dsl_dataset_t *ds = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3217 char *htag = arg2;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3218 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3219 int error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3220
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3221 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3222 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3223
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3224 if (!dsl_dataset_is_snapshot(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3225 return (EINVAL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3226
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3227 if (strlen(htag) >= ZAP_MAXNAMELEN)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3228 return (ENAMETOOLONG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3229
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3230 /* tags must be unique */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3231 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3232 if (ds->ds_phys->ds_userrefs_obj) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3233 error = zap_lookup(mos, ds->ds_phys->ds_userrefs_obj, htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3234 8, 1, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3235 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3236 error = EEXIST;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3237 else if (error == ENOENT)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3238 error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3239 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3240 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3241
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3242 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3243 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3244
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3245 static void
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3246 dsl_dataset_user_hold_sync(void arg1, void arg2, cred_t cr, dmu_tx_t tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3247 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3248 dsl_dataset_t *ds = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3249 char *htag = arg2;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3250 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3251 time_t now = gethrestime_sec();
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3252 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3253
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3254 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3255 if (ds->ds_phys->ds_userrefs_obj == 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3256 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3257 * This is the first user hold for this dataset. Create
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3258 * the userrefs zap object.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3259 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3260 dmu_buf_will_dirty(ds->ds_dbuf, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3261 zapobj = ds->ds_phys->ds_userrefs_obj =
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3262 zap_create(mos, DMU_OT_USERREFS, DMU_OT_NONE, 0, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3263 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3264 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3265 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3266 ds->ds_userrefs++;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3267 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3268
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3269 VERIFY(0 == zap_add(mos, zapobj, htag, 8, 1, &now, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3270
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3271 spa_history_internal_log(LOG_DS_USER_HOLD,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3272 ds->ds_dir->dd_pool->dp_spa, tx, cr, "<%s> dataset = %llu",
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3273 htag, ds->ds_object);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3274 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3275
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3276 struct dsl_ds_holdarg {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3277 dsl_sync_task_group_t *dstg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3278 char *htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3279 char *snapname;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3280 boolean_t recursive;
10268 cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3281 boolean_t gotone;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3282 char failed[MAXPATHLEN];
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3283 };
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3284
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3285 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3286 dsl_dataset_user_hold_one(char dsname, void arg)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3287 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3288 struct dsl_ds_holdarg *ha = arg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3289 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3290 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3291 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3292
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3293 /* alloc a buffer to hold dsname@snapname plus terminating NULL */
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	3294 name = kmem_asprintf("%s@%s", dsname, ha->snapname);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3295 error = dsl_dataset_hold(name, ha->dstg, &ds);
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	3296 strfree(name);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3297 if (error == 0) {
10268 cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3298 ha->gotone = B_TRUE;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3299 dsl_sync_task_create(ha->dstg, dsl_dataset_user_hold_check,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3300 dsl_dataset_user_hold_sync, ds, ha->htag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3301 } else if (error == ENOENT && ha->recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3302 error = 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3303 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3304 (void) strcpy(ha->failed, dsname);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3305 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3306 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3307 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3308
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3309 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3310 dsl_dataset_user_hold(char dsname, char snapname, char *htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3311 boolean_t recursive)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3312 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3313 struct dsl_ds_holdarg *ha;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3314 dsl_sync_task_t *dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3315 spa_t *spa;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3316 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3317
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3318 ha = kmem_zalloc(sizeof (struct dsl_ds_holdarg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3319
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3320 (void) strlcpy(ha->failed, dsname, sizeof (ha->failed));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3321
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3322 error = spa_open(dsname, &spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3323 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3324 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3325 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3326 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3327
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3328 ha->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3329 ha->htag = htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3330 ha->snapname = snapname;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3331 ha->recursive = recursive;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3332 if (recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3333 error = dmu_objset_find(dsname, dsl_dataset_user_hold_one,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3334 ha, DS_FIND_CHILDREN);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3335 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3336 error = dsl_dataset_user_hold_one(dsname, ha);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3337 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3338 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3339 error = dsl_sync_task_group_wait(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3340
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3341 for (dst = list_head(&ha->dstg->dstg_tasks); dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3342 dst = list_next(&ha->dstg->dstg_tasks, dst)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3343 dsl_dataset_t *ds = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3344
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3345 if (dst->dst_err) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3346 dsl_dataset_name(ds, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3347 *strchr(ha->failed, '@') = '\0';
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3348 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3349 dsl_dataset_rele(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3350 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3351
10268 cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3352 if (error == 0 && recursive && !ha->gotone)
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3353 error = ENOENT;
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3354
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3355 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3356 (void) strcpy(dsname, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3357
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3358 dsl_sync_task_group_destroy(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3359 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3360 spa_close(spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3361 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3362 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3363
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3364 struct dsl_ds_releasearg {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3365 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3366 const char *htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3367 boolean_t own; /* do we own or just hold ds? */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3368 };
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3369
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3370 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3371 dsl_dataset_release_might_destroy(dsl_dataset_t ds, const char htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3372 boolean_t *might_destroy)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3373 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3374 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3375 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3376 uint64_t tmp;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3377 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3378
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3379 *might_destroy = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3380
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3381 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3382 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3383 if (zapobj == 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3384 /* The tag can't possibly exist */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3385 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3386 return (ESRCH);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3387 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3388
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3389 /* Make sure the tag exists */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3390 error = zap_lookup(mos, zapobj, htag, 8, 1, &tmp);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3391 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3392 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3393 if (error == ENOENT)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3394 error = ESRCH;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3395 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3396 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3397
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3398 if (ds->ds_userrefs == 1 && ds->ds_phys->ds_num_children == 1 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3399 DS_IS_DEFER_DESTROY(ds))
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3400 *might_destroy = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3401
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3402 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3403 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3404 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3405
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3406 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3407 dsl_dataset_user_release_check(void arg1, void tag, dmu_tx_t *tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3408 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3409 struct dsl_ds_releasearg *ra = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3410 dsl_dataset_t *ds = ra->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3411 boolean_t might_destroy;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3412 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3413
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3414 if (spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_USERREFS)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3415 return (ENOTSUP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3416
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3417 error = dsl_dataset_release_might_destroy(ds, ra->htag, &might_destroy);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3418 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3419 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3420
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3421 if (might_destroy) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3422 struct dsl_ds_destroyarg dsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3423
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3424 if (dmu_tx_is_syncing(tx)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3425 /*
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3426 * If we're not prepared to remove the snapshot,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3427 * we can't allow the release to happen right now.
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3428 */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3429 if (!ra->own)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3430 return (EBUSY);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3431 if (ds->ds_objset) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3432 dmu_objset_evict(ds->ds_objset);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3433 ds->ds_objset = NULL;
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3434 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3435 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3436 dsda.ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3437 dsda.releasing = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3438 return (dsl_dataset_destroy_check(&dsda, tag, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3439 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3440
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3441 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3442 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3443
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3444 static void
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3445 dsl_dataset_user_release_sync(void arg1, void tag, cred_t cr, dmu_tx_t tx)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3446 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3447 struct dsl_ds_releasearg *ra = arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3448 dsl_dataset_t *ds = ra->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3449 spa_t *spa = ds->ds_dir->dd_pool->dp_spa;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3450 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3451 uint64_t zapobj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3452 uint64_t dsobj = ds->ds_object;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3453 uint64_t refs;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3454
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3455 mutex_enter(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3456 ds->ds_userrefs--;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3457 refs = ds->ds_userrefs;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3458 mutex_exit(&ds->ds_lock);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3459 zapobj = ds->ds_phys->ds_userrefs_obj;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3460 VERIFY(0 == zap_remove(mos, zapobj, ra->htag, tx));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3461 if (ds->ds_userrefs == 0 && ds->ds_phys->ds_num_children == 1 &&
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3462 DS_IS_DEFER_DESTROY(ds)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3463 struct dsl_ds_destroyarg dsda = {0};
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3464
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3465 ASSERT(ra->own);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3466 dsda.ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3467 dsda.releasing = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3468 /* We already did the destroy_check */
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3469 dsl_dataset_destroy_sync(&dsda, tag, cr, tx);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3470 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3471
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3472 spa_history_internal_log(LOG_DS_USER_RELEASE,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3473 spa, tx, cr, "<%s> %lld dataset = %llu",
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3474 ra->htag, (longlong_t)refs, dsobj);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3475 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3476
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3477 static int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3478 dsl_dataset_user_release_one(char dsname, void arg)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3479 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3480 struct dsl_ds_holdarg *ha = arg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3481 struct dsl_ds_releasearg *ra;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3482 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3483 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3484 void *dtag = ha->dstg;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3485 char *name;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3486 boolean_t own = B_FALSE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3487 boolean_t might_destroy;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3488
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3489 if (strlen(ha->htag) >= ZAP_MAXNAMELEN)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3490 return (ENAMETOOLONG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3491
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3492 /* alloc a buffer to hold dsname@snapname, plus the terminating NULL */
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	3493 name = kmem_asprintf("%s@%s", dsname, ha->snapname);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3494 error = dsl_dataset_hold(name, dtag, &ds);
10272 a0669934e974 6861581 ZFS frees in synching context during rollback Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10268 diff changeset	3495 strfree(name);
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3496 if (error == ENOENT && ha->recursive)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3497 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3498 (void) strcpy(ha->failed, dsname);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3499 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3500 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3501
10268 cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3502 ha->gotone = B_TRUE;
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3503
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3504 ASSERT(dsl_dataset_is_snapshot(ds));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3505
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3506 error = dsl_dataset_release_might_destroy(ds, ha->htag, &might_destroy);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3507 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3508 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3509 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3510 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3511
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3512 if (might_destroy) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3513 #ifdef _KERNEL
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3514 error = zfs_unmount_snap(name, NULL);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3515 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3516 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3517 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3518 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3519 error = dsl_dataset_zvol_cleanup(ds, name);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3520 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3521 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3522 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3523 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3524 #endif
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3525 if (!dsl_dataset_tryown(ds, B_TRUE, dtag)) {
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3526 dsl_dataset_rele(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3527 return (EBUSY);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3528 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3529 own = B_TRUE;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3530 dsl_dataset_make_exclusive(ds, dtag);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3531 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3532 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3533
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3534 ra = kmem_alloc(sizeof (struct dsl_ds_releasearg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3535 ra->ds = ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3536 ra->htag = ha->htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3537 ra->own = own;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3538 dsl_sync_task_create(ha->dstg, dsl_dataset_user_release_check,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3539 dsl_dataset_user_release_sync, ra, dtag, 0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3540
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3541 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3542 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3543
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3544 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3545 dsl_dataset_user_release(char dsname, char snapname, char *htag,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3546 boolean_t recursive)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3547 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3548 struct dsl_ds_holdarg *ha;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3549 dsl_sync_task_t *dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3550 spa_t *spa;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3551 int error;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3552
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3553 ha = kmem_zalloc(sizeof (struct dsl_ds_holdarg), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3554
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3555 (void) strlcpy(ha->failed, dsname, sizeof (ha->failed));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3556
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3557 error = spa_open(dsname, &spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3558 if (error) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3559 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3560 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3561 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3562
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3563 ha->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3564 ha->htag = htag;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3565 ha->snapname = snapname;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3566 ha->recursive = recursive;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3567 if (recursive) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3568 error = dmu_objset_find(dsname, dsl_dataset_user_release_one,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3569 ha, DS_FIND_CHILDREN);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3570 } else {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3571 error = dsl_dataset_user_release_one(dsname, ha);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3572 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3573 if (error == 0)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3574 error = dsl_sync_task_group_wait(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3575
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3576 for (dst = list_head(&ha->dstg->dstg_tasks); dst;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3577 dst = list_next(&ha->dstg->dstg_tasks, dst)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3578 struct dsl_ds_releasearg *ra = dst->dst_arg1;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3579 dsl_dataset_t *ds = ra->ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3580
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3581 if (dst->dst_err)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3582 dsl_dataset_name(ds, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3583
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3584 if (ra->own)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3585 dsl_dataset_disown(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3586 else
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3587 dsl_dataset_rele(ds, ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3588
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3589 kmem_free(ra, sizeof (struct dsl_ds_releasearg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3590 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3591
10268 cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3592 if (error == 0 && recursive && !ha->gotone)
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3593 error = ENOENT;
cb380b2e9410 6868130 ZFS hold/release "zfs hold -r tag snapshot" failed to check the existence of snapshot Chris Kirby <chris.kirby@sun.com> parents: 10242 diff changeset	3594
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3595 if (error)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3596 (void) strcpy(dsname, ha->failed);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3597
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3598 dsl_sync_task_group_destroy(ha->dstg);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3599 kmem_free(ha, sizeof (struct dsl_ds_holdarg));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3600 spa_close(spa, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3601 return (error);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3602 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3603
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3604 int
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3605 dsl_dataset_get_holds(const char dsname, nvlist_t *nvp)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3606 {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3607 dsl_dataset_t *ds;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3608 int err;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3609
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3610 err = dsl_dataset_hold(dsname, FTAG, &ds);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3611 if (err)
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3612 return (err);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3613
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3614 VERIFY(0 == nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3615 if (ds->ds_phys->ds_userrefs_obj != 0) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3616 zap_attribute_t *za;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3617 zap_cursor_t zc;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3618
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3619 za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3620 for (zap_cursor_init(&zc, ds->ds_dir->dd_pool->dp_meta_objset,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3621 ds->ds_phys->ds_userrefs_obj);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3622 zap_cursor_retrieve(&zc, za) == 0;
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3623 zap_cursor_advance(&zc)) {
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3624 VERIFY(0 == nvlist_add_uint64(*nvp, za->za_name,
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3625 za->za_first_integer));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3626 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3627 zap_cursor_fini(&zc);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3628 kmem_free(za, sizeof (zap_attribute_t));
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3629 }
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3630 dsl_dataset_rele(ds, FTAG);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3631 return (0);
c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10204 diff changeset	3632 }
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3633
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3634 /*
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3635 * Note, this fuction is used as the callback for dmu_objset_find(). We
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3636 * always return 0 so that we will continue to find and process
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3637 * inconsistent datasets, even if we encounter an error trying to
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3638 * process one of them.
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3639 */
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3640 /* ARGSUSED */
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3641 int
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3642 dsl_destroy_inconsistent(char dsname, void arg)
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3643 {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3644 dsl_dataset_t *ds;
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3645
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3646 if (dsl_dataset_own(dsname, B_TRUE, FTAG, &ds) == 0) {
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3647 if (DS_IS_INCONSISTENT(ds))
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3648 (void) dsl_dataset_destroy(ds, FTAG, B_FALSE);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3649 else
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3650 dsl_dataset_disown(ds, FTAG);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3651 }
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3652 return (0);
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10272 diff changeset	3653 }

Mercurial > illumos > illumos-gate

annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 10298:a0d52501437c