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

annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 7390:6d408f0a5fbd

PSARC/2008/518 ZFS space accounting enhancements 6730799 want snapused property 6738349 zfs promote fails without enough space

author	Matthew Ahrens <Matthew.Ahrens@Sun.COM>
date	Fri, 22 Aug 2008 10:29:35 -0700
parents	f69ff8507427
children	d29843e8f8a1

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 /*
5831 48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	22 * Copyright 2008 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>
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	42
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	43 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	44
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	45 static dsl_checkfunc_t dsl_dataset_destroy_begin_check;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	46 static dsl_syncfunc_t dsl_dataset_destroy_begin_sync;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	47 static dsl_checkfunc_t dsl_dataset_rollback_check;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	48 static dsl_syncfunc_t dsl_dataset_rollback_sync;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	49 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	50
3444 dc160a70a50d 6410433 'zpool status -v' would be more useful with filenames ek110237 parents: 3025 diff changeset	51 #define DS_REF_MAX (1ULL << 62)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	52
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	53 #define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	54
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	55 #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	56
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	57
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	58 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	59 * 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	60 * 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	61 * partially accounted for in our ancestors.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	62 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	63 static int64_t
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	64 parent_delta(dsl_dataset_t *ds, int64_t delta)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	65 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	66 uint64_t old_bytes, new_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	67
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	68 if (ds->ds_reserved == 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	69 return (delta);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	70
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	71 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	72 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	73
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	74 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	75 return (new_bytes - old_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	76 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	77
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	78 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	79 dsl_dataset_block_born(dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	80 {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	81 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	82 int compressed = BP_GET_PSIZE(bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	83 int uncompressed = BP_GET_UCSIZE(bp);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	84 int64_t delta;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	85
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	86 dprintf_bp(bp, "born, ds=%p\n", ds);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	87
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	88 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	89 /* It could have been compressed away to nothing */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	90 if (BP_IS_HOLE(bp))
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	91 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	92 ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	93 ASSERT3U(BP_GET_TYPE(bp), <, DMU_OT_NUMTYPES);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	94 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	95 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	96 * Account for the meta-objset space in its placeholder
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	97 * dsl_dir.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	98 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	99 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	100 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	101 used, compressed, uncompressed, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	102 dsl_dir_dirty(tx->tx_pool->dp_mos_dir, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	103 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	104 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	105 dmu_buf_will_dirty(ds->ds_dbuf, tx);
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);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	117 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	118
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	119 int
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	120 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	121 dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	122 {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	123 int used = bp_get_dasize(tx->tx_pool->dp_spa, bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	124 int compressed = BP_GET_PSIZE(bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	125 int uncompressed = BP_GET_UCSIZE(bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	126
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	127 ASSERT(dmu_tx_is_syncing(tx));
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	128 /* No block pointer => nothing to free */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	129 if (BP_IS_HOLE(bp))
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	130 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	131
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	132 ASSERT(used > 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	133 if (ds == NULL) {
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	134 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	135 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	136 * Account for the meta-objset space in its placeholder
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	137 * dataset.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	138 */
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	139 err = dsl_free(pio, tx->tx_pool,
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	140 tx->tx_txg, bp, NULL, NULL, pio ? ARC_NOWAIT: ARC_WAIT);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	141 ASSERT(err == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	142
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	143 dsl_dir_diduse_space(tx->tx_pool->dp_mos_dir, DD_USED_HEAD,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	144 -used, -compressed, -uncompressed, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	145 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	146 return (used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	147 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	148 ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	149
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	150 ASSERT(!dsl_dataset_is_snapshot(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	151 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	152
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	153 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	154 int err;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	155 int64_t delta;
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	156
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	157 dprintf_bp(bp, "freeing: %s", "");
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	158 err = dsl_free(pio, tx->tx_pool,
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	159 tx->tx_txg, bp, NULL, NULL, pio ? ARC_NOWAIT : ARC_WAIT);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	160 ASSERT(err == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	161
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	162 mutex_enter(&ds->ds_lock);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	163 ASSERT(ds->ds_phys->ds_unique_bytes >= used \|\|
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	164 !DS_UNIQUE_IS_ACCURATE(ds));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	165 delta = parent_delta(ds, -used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	166 ds->ds_phys->ds_unique_bytes -= used;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	167 mutex_exit(&ds->ds_lock);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	168 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	169 delta, -compressed, -uncompressed, tx);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	170 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	171 DD_USED_REFRSRV, DD_USED_HEAD, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	172 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	173 dprintf_bp(bp, "putting on dead list: %s", "");
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	174 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	175 ASSERT3U(ds->ds_prev->ds_object, ==,
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	176 ds->ds_phys->ds_prev_snap_obj);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	177 ASSERT(ds->ds_prev->ds_phys->ds_num_children > 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	178 /* 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	179 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	180 ds->ds_object && bp->blk_birth >
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	181 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	182 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	183 mutex_enter(&ds->ds_prev->ds_lock);
81f1af42bafc 6628232 zfs snapshot -r is very slow, causes systemic slowdown ahrens parents: 5569 diff changeset	184 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	185 mutex_exit(&ds->ds_prev->ds_lock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	186 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	187 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	188 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	189 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	190 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	191 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	192 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	193 ASSERT3U(ds->ds_phys->ds_used_bytes, >=, used);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	194 ds->ds_phys->ds_used_bytes -= used;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	195 ASSERT3U(ds->ds_phys->ds_compressed_bytes, >=, compressed);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	196 ds->ds_phys->ds_compressed_bytes -= compressed;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	197 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, >=, uncompressed);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	198 ds->ds_phys->ds_uncompressed_bytes -= uncompressed;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	199 mutex_exit(&ds->ds_lock);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	200
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	201 return (used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	202 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	203
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	204 uint64_t
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	205 dsl_dataset_prev_snap_txg(dsl_dataset_t *ds)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	206 {
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	207 uint64_t trysnap = 0;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	208
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	209 if (ds == NULL)
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	210 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	211 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	212 * The snapshot creation could fail, but that would cause an
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	213 * incorrect FALSE return, which would only result in an
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	214 * overestimation of the amount of space that an operation would
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	215 * consume, which is OK.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	216 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	217 * There's also a small window where we could miss a pending
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	218 * snapshot, because we could set the sync task in the quiescing
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	219 * phase. So this should only be used as a guess.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	220 */
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	221 if (ds->ds_trysnap_txg >
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	222 spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa))
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	223 trysnap = ds->ds_trysnap_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	224 return (MAX(ds->ds_phys->ds_prev_snap_txg, trysnap));
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	225 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	226
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	227 int
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	228 dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	229 {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	230 return (blk_birth > dsl_dataset_prev_snap_txg(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	231 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	232
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	233 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	234 static void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	235 dsl_dataset_evict(dmu_buf_t db, void dsv)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	236 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	237 dsl_dataset_t *ds = dsv;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	238
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	239 ASSERT(ds->ds_owner == NULL \|\| DSL_DATASET_IS_DESTROYED(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	240
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	241 dprintf_ds(ds, "evicting %s\n", "");
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	242
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	243 unique_remove(ds->ds_fsid_guid);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	244
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	245 if (ds->ds_user_ptr != NULL)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	246 ds->ds_user_evict_func(ds, ds->ds_user_ptr);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	247
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	248 if (ds->ds_prev) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	249 dsl_dataset_drop_ref(ds->ds_prev, ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	250 ds->ds_prev = NULL;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	251 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	252
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	253 bplist_close(&ds->ds_deadlist);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	254 if (ds->ds_dir)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	255 dsl_dir_close(ds->ds_dir, ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	256
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	257 ASSERT(!list_link_active(&ds->ds_synced_link));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	258
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	259 mutex_destroy(&ds->ds_lock);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	260 mutex_destroy(&ds->ds_opening_lock);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	261 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	262 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	263 cv_destroy(&ds->ds_exclusive_cv);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	264
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	265 kmem_free(ds, sizeof (dsl_dataset_t));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	266 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	267
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	268 static int
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	269 dsl_dataset_get_snapname(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	270 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	271 dsl_dataset_phys_t *headphys;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	272 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	273 dmu_buf_t *headdbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	274 dsl_pool_t *dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	275 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	276
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	277 if (ds->ds_snapname[0])
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	278 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	279 if (ds->ds_phys->ds_next_snap_obj == 0)
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	280 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	281
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	282 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	283 FTAG, &headdbuf);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	284 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	285 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	286 headphys = headdbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	287 err = zap_value_search(dp->dp_meta_objset,
4577 ed36b0e652bc PSARC/2007/328 zfs upgrade ahrens parents: 4569 diff changeset	288 headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	289 dmu_buf_rele(headdbuf, FTAG);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	290 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	291 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	292
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	293 static int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	294 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	295 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	296 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	297 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	298 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	299 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	300
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	301 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	302 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	303 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	304 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	305
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	306 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	307 value, mt, NULL, 0, NULL);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	308 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	309 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	310 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	311 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	312
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	313 static int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	314 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	315 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	316 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	317 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	318 matchtype_t mt;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	319 int err;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	320
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	321 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	322 mt = MT_FIRST;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	323 else
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	324 mt = MT_EXACT;
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	325
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	326 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	327 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	328 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	329 return (err);
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	330 }
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	331
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	332 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	333 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	334 dsl_dataset_t **dsp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	335 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	336 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	337 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	338 dsl_dataset_t *ds;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	339 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	340
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	341 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) \|\|
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	342 dsl_pool_sync_context(dp));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	343
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	344 err = dmu_bonus_hold(mos, dsobj, tag, &dbuf);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	345 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	346 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	347 ds = dmu_buf_get_user(dbuf);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	348 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	349 dsl_dataset_t *winner;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	350
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	351 ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	352 ds->ds_dbuf = dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	353 ds->ds_object = dsobj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	354 ds->ds_phys = dbuf->db_data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	355
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	356 mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	357 mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	358 mutex_init(&ds->ds_deadlist.bpl_lock, NULL, MUTEX_DEFAULT,
6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	359 NULL);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	360 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	361 cv_init(&ds->ds_exclusive_cv, NULL, CV_DEFAULT, NULL);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	362
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	363 err = bplist_open(&ds->ds_deadlist,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	364 mos, ds->ds_phys->ds_deadlist_obj);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	365 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	366 err = dsl_dir_open_obj(dp,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	367 ds->ds_phys->ds_dir_obj, NULL, ds, &ds->ds_dir);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	368 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	369 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	370 /*
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	371 * we don't really need to close the blist if we
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	372 * just opened it.
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	373 */
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	374 mutex_destroy(&ds->ds_lock);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	375 mutex_destroy(&ds->ds_opening_lock);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	376 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	377 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	378 cv_destroy(&ds->ds_exclusive_cv);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	379 kmem_free(ds, sizeof (dsl_dataset_t));
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	380 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	381 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	382 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	383
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	384 if (!dsl_dataset_is_snapshot(ds)) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	385 ds->ds_snapname[0] = '\0';
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	386 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	387 err = dsl_dataset_get_ref(dp,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	388 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	389 ds, &ds->ds_prev);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	390 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	391
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	392 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	393 dsl_dataset_t *origin;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	394
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	395 err = dsl_dataset_hold_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	396 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	397 FTAG, &origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	398 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	399 ds->ds_origin_txg =
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	400 origin->ds_phys->ds_creation_txg;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	401 dsl_dataset_rele(origin, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	402 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	403 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	404 } else if (zfs_flags & ZFS_DEBUG_SNAPNAMES) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	405 err = dsl_dataset_get_snapname(ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	406 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	407
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	408 if (err == 0 && !dsl_dataset_is_snapshot(ds)) {
5569 d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	409 /*
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	410 * 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	411 * 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	412 * we're always called with the read lock held.
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	413 */
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	414 boolean_t need_lock =
5569 d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	415 !RW_WRITE_HELD(&dp->dp_config_rwlock) &&
d3caac36d311 6634062 dsl_dataset_open_obj misuses RW_LOCK_HELD ck153898 parents: 5518 diff changeset	416 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	417
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	418 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	419 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	420
7265 cc18862247da PSARC/2008/483 ZFS clone -o ahrens parents: 7237 diff changeset	421 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	422 "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	423 &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	424 if (err == 0) {
7265 cc18862247da PSARC/2008/483 ZFS clone -o ahrens parents: 7237 diff changeset	425 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	426 "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	427 &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	428 }
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_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	432 } 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	433 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	434 }
e140313199cc 6626338 assertion failed: 0 == dsl_prop_get_ds_locked(ds->ds_dir, "refreservation", sizeof (uint64_t), 1, &d ck153898 parents: 5446 diff changeset	435
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	436 if (err == 0) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	437 winner = dmu_buf_set_user_ie(dbuf, ds, &ds->ds_phys,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	438 dsl_dataset_evict);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	439 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	440 if (err \|\| winner) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	441 bplist_close(&ds->ds_deadlist);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	442 if (ds->ds_prev)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	443 dsl_dataset_drop_ref(ds->ds_prev, ds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	444 dsl_dir_close(ds->ds_dir, ds);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	445 mutex_destroy(&ds->ds_lock);
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	446 mutex_destroy(&ds->ds_opening_lock);
2856 6f4d5ee1906a 6463348 ZFS code could be more portable nd150628 parents: 2532 diff changeset	447 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	448 rw_destroy(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	449 cv_destroy(&ds->ds_exclusive_cv);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	450 kmem_free(ds, sizeof (dsl_dataset_t));
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	451 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	452 dmu_buf_rele(dbuf, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	453 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	454 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	455 ds = winner;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	456 } else {
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	457 ds->ds_fsid_guid =
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	458 unique_insert(ds->ds_phys->ds_fsid_guid);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	459 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	460 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	461 ASSERT3P(ds->ds_dbuf, ==, dbuf);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	462 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	463 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	464 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	465 dp->dp_origin_snap == NULL \|\| ds == dp->dp_origin_snap);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	466 mutex_enter(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	467 if (!dsl_pool_sync_context(dp) && DSL_DATASET_IS_DESTROYED(ds)) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	468 mutex_exit(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	469 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	470 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	471 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	472 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	473 *dsp = ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	474 return (0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	475 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	476
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	477 static int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	478 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	479 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	480 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	481
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	482 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	483 * 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	484 * 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	485 * 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	486 * 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	487 * doing anything while we are active.
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 if (dsl_pool_sync_context(dp)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	490 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	491 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	492 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	493
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	494 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	495 * 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	496 * 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	497 * 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	498 *
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	499 * 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	500 * 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	501 * 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	502 * 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	503 * 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	504 * the dataset is determined.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	505 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	506 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	507 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	508 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	509 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	510 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	511 if (DSL_DATASET_IS_DESTROYED(ds)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	512 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	513 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	514 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	515 return (ENOENT);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	516 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	517 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	518 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	519 mutex_exit(&ds->ds_lock);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	520 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	521 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	522
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	523 int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	524 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	525 dsl_dataset_t **dsp)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	526 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	527 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	528
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	529 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	530 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	531 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	532 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	533
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	534 int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	535 dsl_dataset_own_obj(dsl_pool_t dp, uint64_t dsobj, int flags, void owner,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	536 dsl_dataset_t **dsp)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	537 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	538 int err = dsl_dataset_hold_obj(dp, dsobj, owner, 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 ASSERT(DS_MODE_TYPE(flags) != DS_MODE_USER);
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 if (!dsl_dataset_tryown(*dsp, DS_MODE_IS_INCONSISTENT(flags), owner)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	545 dsl_dataset_rele(*dsp, owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	546 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	547 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	548 return (0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	549 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	550
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	551 int
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	552 dsl_dataset_hold(const char name, void tag, dsl_dataset_t **dsp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	553 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	554 dsl_dir_t *dd;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	555 dsl_pool_t *dp;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	556 const char *snapname;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	557 uint64_t obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	558 int err = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	559
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	560 err = dsl_dir_open_spa(NULL, name, FTAG, &dd, &snapname);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	561 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	562 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	563
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	564 dp = dd->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	565 obj = dd->dd_phys->dd_head_dataset_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	566 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	567 if (obj)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	568 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	569 else
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	570 err = ENOENT;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	571 if (err)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	572 goto out;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	573
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	574 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	575
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	576 /* 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	577 if (err == 0 && snapname != NULL) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	578 dsl_dataset_t *ds = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	579
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	580 if (*snapname++ != '@') {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	581 dsl_dataset_rele(*dsp, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	582 err = ENOENT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	583 goto out;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	584 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	585
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	586 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	587 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	588 if (err == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	589 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	590 dsl_dataset_rele(*dsp, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	591
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	592 ASSERT3U((err == 0), ==, (ds != NULL));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	593
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	594 if (ds) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	595 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	596 if (ds->ds_snapname[0] == 0)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	597 (void) strlcpy(ds->ds_snapname, snapname,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	598 sizeof (ds->ds_snapname));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	599 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	600 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	601 *dsp = err ? NULL : ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	602 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	603 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	604 out:
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	605 rw_exit(&dp->dp_config_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	606 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	607 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	608 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	609
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	610 int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	611 dsl_dataset_own(const char name, int flags, void owner, dsl_dataset_t **dsp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	612 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	613 int err = dsl_dataset_hold(name, owner, dsp);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	614 if (err)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	615 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	616 if ((*dsp)->ds_phys->ds_num_children > 0 &&
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	617 !DS_MODE_IS_READONLY(flags)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	618 dsl_dataset_rele(*dsp, owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	619 return (EROFS);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	620 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	621 if (!dsl_dataset_tryown(*dsp, DS_MODE_IS_INCONSISTENT(flags), owner)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	622 dsl_dataset_rele(*dsp, owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	623 return (EBUSY);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	624 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	625 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	626 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	627
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	628 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	629 dsl_dataset_name(dsl_dataset_t ds, char name)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	630 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	631 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	632 (void) strcpy(name, "mos");
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	633 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	634 dsl_dir_name(ds->ds_dir, name);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	635 VERIFY(0 == dsl_dataset_get_snapname(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	636 if (ds->ds_snapname[0]) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	637 (void) strcat(name, "@");
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	638 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	639 * 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	640 * 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	641 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	642 if (!MUTEX_HELD(&ds->ds_lock)) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	643 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	644 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	645 mutex_exit(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	646 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	647 (void) strcat(name, ds->ds_snapname);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	648 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	649 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	650 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	651 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	652
3978 2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	653 static int
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	654 dsl_dataset_namelen(dsl_dataset_t *ds)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	655 {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	656 int result;
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	657
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	658 if (ds == NULL) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	659 result = 3; /* "mos" */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	660 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	661 result = dsl_dir_namelen(ds->ds_dir);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	662 VERIFY(0 == dsl_dataset_get_snapname(ds));
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	663 if (ds->ds_snapname[0]) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	664 ++result; /* adding one for the @-sign */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	665 if (!MUTEX_HELD(&ds->ds_lock)) {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	666 mutex_enter(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	667 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	668 mutex_exit(&ds->ds_lock);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	669 } else {
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	670 result += strlen(ds->ds_snapname);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	671 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	672 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	673 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	674
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	675 return (result);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	676 }
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	677
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	678 void
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	679 dsl_dataset_drop_ref(dsl_dataset_t ds, void tag)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	680 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	681 dmu_buf_rele(ds->ds_dbuf, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	682 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	683
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	684 void
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	685 dsl_dataset_rele(dsl_dataset_t ds, void tag)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	686 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	687 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	688 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	689 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	690 dsl_dataset_drop_ref(ds, tag);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	691 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	692
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	693 void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	694 dsl_dataset_disown(dsl_dataset_t ds, void owner)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	695 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	696 ASSERT((ds->ds_owner == owner && ds->ds_dbuf) \|\|
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	697 (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	698
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	699 mutex_enter(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	700 ds->ds_owner = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	701 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	702 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	703 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	704 }
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	705 mutex_exit(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	706 if (ds->ds_dbuf)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	707 dsl_dataset_drop_ref(ds, owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	708 else
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	709 dsl_dataset_evict(ds->ds_dbuf, ds);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	710 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	711
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	712 boolean_t
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	713 dsl_dataset_tryown(dsl_dataset_t ds, boolean_t inconsistentok, void owner)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	714 {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	715 boolean_t gotit = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	716
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	717 mutex_enter(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	718 if (ds->ds_owner == NULL &&
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	719 (!DS_IS_INCONSISTENT(ds) \|\| inconsistentok)) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	720 ds->ds_owner = owner;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	721 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	722 rw_exit(&ds->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	723 gotit = TRUE;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	724 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	725 mutex_exit(&ds->ds_lock);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	726 return (gotit);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	727 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	728
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	729 void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	730 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	731 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	732 ASSERT3P(owner, ==, ds->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	733 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	734 rw_enter(&ds->ds_rwlock, RW_WRITER);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	735 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	736
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	737 uint64_t
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	738 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	739 uint64_t flags, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	740 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	741 dsl_pool_t *dp = dd->dd_pool;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	742 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	743 dsl_dataset_phys_t *dsphys;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	744 uint64_t dsobj;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	745 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	746
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	747 if (origin == NULL)
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	748 origin = dp->dp_origin_snap;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	749
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	750 ASSERT(origin == NULL \|\| origin->ds_dir->dd_pool == dp);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	751 ASSERT(origin == NULL \|\| origin->ds_phys->ds_num_children > 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	752 ASSERT(dmu_tx_is_syncing(tx));
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	753 ASSERT(dd->dd_phys->dd_head_dataset_obj == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	754
928 36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets tabriz parents: 885 diff changeset	755 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	756 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	757 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	758 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	759 dsphys = dbuf->db_data;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	760 bzero(dsphys, sizeof (dsl_dataset_phys_t));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	761 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	762 dsphys->ds_flags = flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	763 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	764 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	765 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	766 dsphys->ds_snapnames_zapobj =
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	767 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	768 DMU_OT_NONE, 0, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	769 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	770 dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	771 dsphys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	772 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	773
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	774 if (origin) {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	775 dsphys->ds_prev_snap_obj = origin->ds_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	776 dsphys->ds_prev_snap_txg =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	777 origin->ds_phys->ds_creation_txg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	778 dsphys->ds_used_bytes =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	779 origin->ds_phys->ds_used_bytes;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	780 dsphys->ds_compressed_bytes =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	781 origin->ds_phys->ds_compressed_bytes;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	782 dsphys->ds_uncompressed_bytes =
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	783 origin->ds_phys->ds_uncompressed_bytes;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	784 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	785 dsphys->ds_flags \|= origin->ds_phys->ds_flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	786
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	787 dmu_buf_will_dirty(origin->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	788 origin->ds_phys->ds_num_children++;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	789
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	790 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	791 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	792 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	793 zap_create(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	794 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	795 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	796 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	797 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	798 dsobj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	799 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	800
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	801 dmu_buf_will_dirty(dd->dd_dbuf, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	802 dd->dd_phys->dd_origin_obj = origin->ds_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	803 }
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	804
903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	805 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	806 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	807
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	808 dmu_buf_rele(dbuf, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	809
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	810 dmu_buf_will_dirty(dd->dd_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	811 dd->dd_phys->dd_head_dataset_obj = dsobj;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	812
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	813 return (dsobj);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	814 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	815
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	816 uint64_t
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	817 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	818 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	819 {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	820 dsl_pool_t *dp = pdd->dd_pool;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	821 uint64_t dsobj, ddobj;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	822 dsl_dir_t *dd;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	823
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	824 ASSERT(lastname[0] != '@');
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	825
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	826 ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	827 VERIFY(0 == dsl_dir_open_obj(dp, ddobj, lastname, FTAG, &dd));
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	828
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	829 dsobj = dsl_dataset_create_sync_dd(dd, origin, flags, tx);
5367 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 dsl_deleg_set_create_perms(dd, tx, cr);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	832
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	833 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	834
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	835 return (dsobj);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	836 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	837
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	838 struct destroyarg {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	839 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	840 char *snapname;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	841 char *failed;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	842 };
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	843
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	844 static int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	845 dsl_snapshot_destroy_one(char name, void arg)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	846 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	847 struct destroyarg *da = arg;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	848 dsl_dataset_t *ds;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	849 char *cp;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	850 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	851
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	852 (void) strcat(name, "@");
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	853 (void) strcat(name, da->snapname);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	854 err = dsl_dataset_own(name, DS_MODE_READONLY \| DS_MODE_INCONSISTENT,
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	855 da->dstg, &ds);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	856 cp = strchr(name, '@');
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	857 *cp = '\0';
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	858 if (err == 0) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	859 dsl_dataset_make_exclusive(ds, da->dstg);
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	860 if (ds->ds_user_ptr) {
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	861 ds->ds_user_evict_func(ds, ds->ds_user_ptr);
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	862 ds->ds_user_ptr = NULL;
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	863 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	864 dsl_sync_task_create(da->dstg, dsl_dataset_destroy_check,
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	865 dsl_dataset_destroy_sync, ds, da->dstg, 0);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	866 } else if (err == ENOENT) {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	867 err = 0;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	868 } else {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	869 (void) strcpy(da->failed, name);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	870 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	871 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	872 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	873
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	874 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	875 * Destroy 'snapname' in all descendants of 'fsname'.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	876 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	877 #pragma weak dmu_snapshots_destroy = dsl_snapshots_destroy
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	878 int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	879 dsl_snapshots_destroy(char fsname, char snapname)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	880 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	881 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	882 struct destroyarg da;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	883 dsl_sync_task_t *dst;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	884 spa_t *spa;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	885
4603 c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups ahrens parents: 4577 diff changeset	886 err = spa_open(fsname, &spa, FTAG);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	887 if (err)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	888 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	889 da.dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	890 da.snapname = snapname;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	891 da.failed = fsname;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	892
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	893 err = dmu_objset_find(fsname,
2417 694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	894 dsl_snapshot_destroy_one, &da, DS_FIND_CHILDREN);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	895
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	896 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	897 err = dsl_sync_task_group_wait(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	898
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	899 for (dst = list_head(&da.dstg->dstg_tasks); dst;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	900 dst = list_next(&da.dstg->dstg_tasks, dst)) {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	901 dsl_dataset_t *ds = dst->dst_arg1;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	902 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	903 * 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	904 */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	905 if (dst->dst_err) {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	906 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	907 *strchr(fsname, '@') = '\0';
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	908 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	909 dsl_dataset_disown(ds, da.dstg);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	910 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	911
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	912 dsl_sync_task_group_destroy(da.dstg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	913 spa_close(spa, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	914 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	915 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	916
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	917 /*
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	918 * 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	919 * ds will be closed and caller can no longer dereference it.
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	920 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	921 int
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	922 dsl_dataset_destroy(dsl_dataset_t ds, void tag)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	923 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	924 int err;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	925 dsl_sync_task_group_t *dstg;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	926 objset_t *os;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	927 dsl_dir_t *dd;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	928 uint64_t obj;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	929
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	930 if (dsl_dataset_is_snapshot(ds)) {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	931 /* Destroying a snapshot is simpler */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	932 dsl_dataset_make_exclusive(ds, tag);
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	933
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	934 if (ds->ds_user_ptr) {
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	935 ds->ds_user_evict_func(ds, ds->ds_user_ptr);
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	936 ds->ds_user_ptr = NULL;
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	937 }
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	938 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	939 dsl_dataset_destroy_check, dsl_dataset_destroy_sync,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	940 ds, tag, 0);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	941 goto out;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	942 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	943
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	944 dd = ds->ds_dir;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	945
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	946 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	947 * Check for errors and mark this ds as inconsistent, in
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	948 * case we crash while freeing the objects.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	949 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	950 err = dsl_sync_task_do(dd->dd_pool, dsl_dataset_destroy_begin_check,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	951 dsl_dataset_destroy_begin_sync, ds, NULL, 0);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	952 if (err)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	953 goto out;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	954
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	955 err = dmu_objset_open_ds(ds, DMU_OST_ANY, &os);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	956 if (err)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	957 goto out;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	958
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	959 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	960 * remove the objects in open context, so that we won't
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	961 * have too much to do in syncing context.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	962 */
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	963 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	964 ds->ds_phys->ds_prev_snap_txg)) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	965 /*
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	966 * Ignore errors, if there is not enough disk space
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	967 * 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	968 */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 6975 diff changeset	969 (void) dmu_free_object(os, obj);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	970 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	971
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	972 dmu_objset_close(os);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	973 if (err != ESRCH)
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	974 goto out;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	975
6975 c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	976 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	977 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	978 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	979
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	980 if (err)
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	981 goto out;
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	982
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	983 if (ds->ds_user_ptr) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	984 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	985 * 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	986 * 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	987 * 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	988 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	989 txg_wait_synced(dd->dd_pool, 0);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	990 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	991
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	992 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	993 * Blow away the dsl_dir + head dataset.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	994 */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	995 dsl_dataset_make_exclusive(ds, tag);
6975 c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	996 if (ds->ds_user_ptr) {
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	997 ds->ds_user_evict_func(ds, ds->ds_user_ptr);
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	998 ds->ds_user_ptr = NULL;
c511f317869e 6717522 panic in dmu_objset_stats() due to freed objset_impl_t maybee parents: 6689 diff changeset	999 }
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1000 dstg = dsl_sync_task_group_create(ds->ds_dir->dd_pool);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1001 dsl_sync_task_create(dstg, dsl_dataset_destroy_check,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1002 dsl_dataset_destroy_sync, ds, tag, 0);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1003 dsl_sync_task_create(dstg, dsl_dir_destroy_check,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1004 dsl_dir_destroy_sync, dd, FTAG, 0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1005 err = dsl_sync_task_group_wait(dstg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1006 dsl_sync_task_group_destroy(dstg);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1007 /* 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	1008 if (err)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1009 dsl_dir_close(dd, FTAG);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1010 out:
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1011 dsl_dataset_disown(ds, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1012 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1013 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1014
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1015 int
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1016 dsl_dataset_rollback(dsl_dataset_t *ds, dmu_objset_type_t ost)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1017 {
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1018 int err;
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1019
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1020 ASSERT(ds->ds_owner);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1021
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1022 dsl_dataset_make_exclusive(ds, ds->ds_owner);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1023 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1024 dsl_dataset_rollback_check, dsl_dataset_rollback_sync,
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1025 ds, &ost, 0);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1026 /* drop exclusive access */
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1027 mutex_enter(&ds->ds_lock);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1028 rw_exit(&ds->ds_rwlock);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1029 cv_broadcast(&ds->ds_exclusive_cv);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1030 mutex_exit(&ds->ds_lock);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7312 diff changeset	1031 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1032 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1033
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1034 void *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1035 dsl_dataset_set_user_ptr(dsl_dataset_t *ds,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1036 void *p, dsl_dataset_evict_func_t func)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1037 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1038 void *old;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1039
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1040 mutex_enter(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1041 old = ds->ds_user_ptr;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1042 if (old == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1043 ds->ds_user_ptr = p;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1044 ds->ds_user_evict_func = func;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1045 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1046 mutex_exit(&ds->ds_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1047 return (old);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1048 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1049
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1050 void *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1051 dsl_dataset_get_user_ptr(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1052 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1053 return (ds->ds_user_ptr);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1054 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1055
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1056
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1057 blkptr_t *
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1058 dsl_dataset_get_blkptr(dsl_dataset_t *ds)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1059 {
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1060 return (&ds->ds_phys->ds_bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1061 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1062
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1063 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1064 dsl_dataset_set_blkptr(dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1065 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1066 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1067 /* If it's the meta-objset, set dp_meta_rootbp */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1068 if (ds == NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1069 tx->tx_pool->dp_meta_rootbp = *bp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1070 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1071 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1072 ds->ds_phys->ds_bp = *bp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1073 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1074 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1075
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1076 spa_t *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1077 dsl_dataset_get_spa(dsl_dataset_t *ds)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1078 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1079 return (ds->ds_dir->dd_pool->dp_spa);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1080 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1081
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1082 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1083 dsl_dataset_dirty(dsl_dataset_t ds, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1084 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1085 dsl_pool_t *dp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1086
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1087 if (ds == NULL) /* this is the meta-objset */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1088 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1089
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1090 ASSERT(ds->ds_user_ptr != NULL);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1091
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1092 if (ds->ds_phys->ds_next_snap_obj != 0)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1093 panic("dirtying snapshot!");
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1094
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1095 dp = ds->ds_dir->dd_pool;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1096
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1097 if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg) == 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1098 /* up the hold count until we can be written out */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1099 dmu_buf_add_ref(ds->ds_dbuf, ds);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1100 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1101 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1102
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1103 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1104 * 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	1105 * 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	1106 * 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	1107 * 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	1108 * 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	1109 * has been freed up since the snapshot was taken.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1110 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1111 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1112 dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1113 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1114 uint64_t mrs_used;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1115 uint64_t dlused, dlcomp, dluncomp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1116
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1117 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	1118
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1119 if (ds->ds_phys->ds_prev_snap_obj != 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1120 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	1121 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1122 mrs_used = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1123
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1124 VERIFY(0 == bplist_space(&ds->ds_deadlist, &dlused, &dlcomp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1125 &dluncomp));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1126
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1127 ASSERT3U(dlused, <=, mrs_used);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1128 ds->ds_phys->ds_unique_bytes =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1129 ds->ds_phys->ds_used_bytes - (mrs_used - dlused);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1130
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1131 if (!DS_UNIQUE_IS_ACCURATE(ds) &&
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1132 spa_version(ds->ds_dir->dd_pool->dp_spa) >=
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1133 SPA_VERSION_UNIQUE_ACCURATE)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1134 ds->ds_phys->ds_flags \|= DS_FLAG_UNIQUE_ACCURATE;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1135 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1136
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1137 static uint64_t
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1138 dsl_dataset_unique(dsl_dataset_t *ds)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1139 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1140 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	1141 dsl_dataset_recalc_head_uniq(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1142
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1143 return (ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1144 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1145
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1146 struct killarg {
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1147 dsl_dataset_t *ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1148 zio_t *zio;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1149 dmu_tx_t *tx;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1150 };
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1151
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1152 /* ARGSUSED */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1153 static int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1154 kill_blkptr(traverse_blk_cache_t bc, spa_t spa, void *arg)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1155 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1156 struct killarg *ka = arg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1157 blkptr_t *bp = &bc->bc_blkptr;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1158
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1159 ASSERT3U(bc->bc_errno, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1160
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1161 ASSERT3U(bp->blk_birth, >, ka->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	1162 (void) dsl_dataset_block_kill(ka->ds, bp, ka->zio, ka->tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1163
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1164 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1165 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1166
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1167 /* ARGSUSED */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1168 static int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1169 dsl_dataset_rollback_check(void arg1, void arg2, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1170 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1171 dsl_dataset_t *ds = arg1;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1172 dmu_objset_type_t *ost = arg2;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1173
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1174 /*
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1175 * We can only roll back to emptyness if it is a ZPL objset.
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1176 */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1177 if (*ost != DMU_OST_ZFS && ds->ds_phys->ds_prev_snap_txg == 0)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1178 return (EINVAL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1179
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1180 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1181 * This must not be a snapshot.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1182 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1183 if (ds->ds_phys->ds_next_snap_obj != 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1184 return (EINVAL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1185
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1186 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1187 * If we made changes this txg, traverse_dsl_dataset won't find
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1188 * them. Try again.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1189 */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1190 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1191 return (EAGAIN);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1192
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1193 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1194 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1195
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1196 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1197 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1198 dsl_dataset_rollback_sync(void arg1, void arg2, cred_t cr, dmu_tx_t tx)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1199 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1200 dsl_dataset_t *ds = arg1;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1201 dmu_objset_type_t *ost = arg2;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1202 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1203
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1204 dmu_buf_will_dirty(ds->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1205
4967 8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1206 /*
8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1207 * Before the roll back destroy the zil.
8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1208 */
8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1209 if (ds->ds_user_ptr != NULL) {
8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1210 zil_rollback_destroy(
8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1211 ((objset_impl_t *)ds->ds_user_ptr)->os_zil, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1212
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1213 /*
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1214 * We need to make sure that the objset_impl_t is reopened after
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1215 * we do the rollback, otherwise it will have the wrong
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1216 * objset_phys_t. Normally this would happen when this
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1217 * dataset-open is closed, thus causing the
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1218 * dataset to be immediately evicted. But when doing "zfs recv
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1219 * -F", we reopen the objset before that, so that there is no
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1220 * window where the dataset is closed and inconsistent.
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1221 */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1222 ds->ds_user_evict_func(ds, ds->ds_user_ptr);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1223 ds->ds_user_ptr = NULL;
4967 8d0de61ff354 6597381 BAD TRAP: type=e (#pf Page fault) rp=ffffff00043a48f0 addr=28 occurred in module "<unknown>" due to perrin parents: 4935 diff changeset	1224 }
4935 c80bf0e6f4aa 6534949 Stale need for range locking comment in zvol.c perrin parents: 4787 diff changeset	1225
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1226 /* Transfer space that was freed since last snap back to the head. */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1227 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1228 uint64_t used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1229
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1230 VERIFY(0 == bplist_space_birthrange(&ds->ds_deadlist,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1231 ds->ds_origin_txg, UINT64_MAX, &used));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1232 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	1233 DD_USED_SNAP, DD_USED_HEAD, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1234 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1235
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1236 /* Zero out the deadlist. */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1237 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1238 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1239 ds->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1240 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1241 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1242 ds->ds_phys->ds_deadlist_obj));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1243
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1244 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1245 /* Free blkptrs that we gave birth to */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1246 zio_t *zio;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1247 struct killarg ka;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1248
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1249 zio = zio_root(tx->tx_pool->dp_spa, NULL, NULL,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1250 ZIO_FLAG_MUSTSUCCEED);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1251 ka.ds = ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1252 ka.zio = zio;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1253 ka.tx = tx;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1254 (void) traverse_dsl_dataset(ds, ds->ds_phys->ds_prev_snap_txg,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1255 ADVANCE_POST, kill_blkptr, &ka);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1256 (void) zio_wait(zio);
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 ASSERT(!(ds->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) \|\|
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1260 ds->ds_phys->ds_unique_bytes == 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1261
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1262 if (ds->ds_prev && ds->ds_prev != ds->ds_dir->dd_pool->dp_origin_snap) {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1263 /* Change our contents to that of the prev snapshot */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1264
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1265 ASSERT3U(ds->ds_prev->ds_object, ==,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1266 ds->ds_phys->ds_prev_snap_obj);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1267 ASSERT3U(ds->ds_phys->ds_used_bytes, <=,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1268 ds->ds_prev->ds_phys->ds_used_bytes);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1269
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1270 ds->ds_phys->ds_bp = ds->ds_prev->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1271 ds->ds_phys->ds_used_bytes =
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1272 ds->ds_prev->ds_phys->ds_used_bytes;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1273 ds->ds_phys->ds_compressed_bytes =
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1274 ds->ds_prev->ds_phys->ds_compressed_bytes;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1275 ds->ds_phys->ds_uncompressed_bytes =
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1276 ds->ds_prev->ds_phys->ds_uncompressed_bytes;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1277 ds->ds_phys->ds_flags = ds->ds_prev->ds_phys->ds_flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1278
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1279 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1280 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1281 ds->ds_prev->ds_phys->ds_unique_bytes = 0;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1282 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1283 } else {
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1284 objset_impl_t *osi;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1285
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1286 ASSERT3U(ds->ds_phys->ds_used_bytes, ==, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1287 ASSERT3U(ds->ds_phys->ds_compressed_bytes, ==, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1288 ASSERT3U(ds->ds_phys->ds_uncompressed_bytes, ==, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1289
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1290 bzero(&ds->ds_phys->ds_bp, sizeof (blkptr_t));
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1291 ds->ds_phys->ds_flags = 0;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1292 ds->ds_phys->ds_unique_bytes = 0;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1293 if (spa_version(ds->ds_dir->dd_pool->dp_spa) >=
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1294 SPA_VERSION_UNIQUE_ACCURATE)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1295 ds->ds_phys->ds_flags \|= DS_FLAG_UNIQUE_ACCURATE;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1296
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1297 osi = dmu_objset_create_impl(ds->ds_dir->dd_pool->dp_spa, ds,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1298 &ds->ds_phys->ds_bp, *ost, tx);
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1299 #ifdef _KERNEL
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1300 zfs_create_fs(&osi->os, kcred, NULL, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1301 #endif
2532 752725c22841 6448999 panic: used == ds->ds_phys->ds_unique_bytes ahrens parents: 2417 diff changeset	1302 }
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1303
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1304 spa_history_internal_log(LOG_DS_ROLLBACK, ds->ds_dir->dd_pool->dp_spa,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1305 tx, cr, "dataset = %llu", ds->ds_object);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1306 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1307
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1308 /* ARGSUSED */
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1309 static int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1310 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	1311 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1312 dsl_dataset_t *ds = arg1;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1313 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1314 uint64_t count;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1315 int err;
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1316
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1317 /*
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1318 * 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	1319 * (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	1320 * from.)
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1321 */
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1322 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	1323 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	1324 return (EINVAL);
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1325
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1326 /*
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1327 * 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	1328 * we'll be less likely to leave this dataset inconsistent &
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1329 * nearly destroyed.
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1330 */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1331 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	1332 if (err)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1333 return (err);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1334 if (count != 0)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1335 return (EEXIST);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1336
1731 1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1337 return (0);
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1338 }
1efa8b3d1296 6402598 'zfs destroy <fs>' can take a long time, stopping up the txg train bonwick parents: 1544 diff changeset	1339
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1340 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1341 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1342 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	1343 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1344 dsl_dataset_t *ds = arg1;
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1345 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1346
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1347 /* Mark it as inconsistent on-disk, in case we crash */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1348 dmu_buf_will_dirty(ds->ds_dbuf, tx);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1349 ds->ds_phys->ds_flags \|= DS_FLAG_INCONSISTENT;
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1350
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1351 spa_history_internal_log(LOG_DS_DESTROY_BEGIN, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1352 cr, "dataset = %llu", ds->ds_object);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1353 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1354
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1355 /* ARGSUSED */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1356 int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1357 dsl_dataset_destroy_check(void arg1, void arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1358 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1359 dsl_dataset_t *ds = arg1;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1360
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1361 /* 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	1362 ASSERT(!DSL_DATASET_IS_DESTROYED(ds));
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1363
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1364 /* Can't delete a branch point. */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1365 if (ds->ds_phys->ds_num_children > 1)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1366 return (EEXIST);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1367
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1368 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1369 * Can't delete a head dataset if there are snapshots of it.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1370 * (Except if the only snapshots are from the branch we cloned
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1371 * from.)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1372 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1373 if (ds->ds_prev != NULL &&
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1374 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1375 return (EINVAL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1376
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1377 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1378 * If we made changes this txg, traverse_dsl_dataset won't find
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1379 * them. Try again.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1380 */
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1381 if (ds->ds_phys->ds_bp.blk_birth >= tx->tx_txg)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1382 return (EAGAIN);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1383
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1384 /* XXX we should do some i/o error checking... */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1385 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1386 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1387
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1388 struct refsarg {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1389 kmutex_t lock;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1390 boolean_t gone;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1391 kcondvar_t cv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1392 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1393
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1394 /* ARGSUSED */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1395 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1396 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	1397 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1398 struct refsarg *arg = argv;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1399
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1400 mutex_enter(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1401 arg->gone = TRUE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1402 cv_signal(&arg->cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1403 mutex_exit(&arg->lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1404 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1405
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1406 static void
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1407 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	1408 {
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1409 struct refsarg arg;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1410
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1411 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	1412 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	1413 arg.gone = FALSE;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1414 (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	1415 dsl_dataset_refs_gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1416 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	1417 mutex_enter(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1418 while (!arg.gone)
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1419 cv_wait(&arg.cv, &arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1420 ASSERT(arg.gone);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1421 mutex_exit(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1422 ds->ds_dbuf = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1423 ds->ds_phys = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1424 mutex_destroy(&arg.lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1425 cv_destroy(&arg.cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1426 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1427
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1428 void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1429 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	1430 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1431 dsl_dataset_t *ds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1432 zio_t *zio;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1433 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1434 int after_branch_point = FALSE;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1435 dsl_pool_t *dp = ds->ds_dir->dd_pool;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1436 objset_t *mos = dp->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1437 dsl_dataset_t *ds_prev = NULL;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1438 uint64_t obj;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1439
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1440 ASSERT(ds->ds_owner);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1441 ASSERT3U(ds->ds_phys->ds_num_children, <=, 1);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1442 ASSERT(ds->ds_prev == NULL \|\|
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1443 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1444 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1445
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1446 /* 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	1447 mutex_enter(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1448 ds->ds_owner = dsl_reaper;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1449 cv_broadcast(&ds->ds_exclusive_cv);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1450 mutex_exit(&ds->ds_lock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1451
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1452 /* Remove our reservation */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1453 if (ds->ds_reserved != 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1454 uint64_t val = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1455 dsl_dataset_set_reservation_sync(ds, &val, cr, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1456 ASSERT3U(ds->ds_reserved, ==, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1457 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1458
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1459 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1460
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1461 dsl_pool_ds_destroyed(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1462
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1463 obj = ds->ds_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1464
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1465 if (ds->ds_phys->ds_prev_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1466 if (ds->ds_prev) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1467 ds_prev = ds->ds_prev;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1468 } else {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1469 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	1470 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1471 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1472 after_branch_point =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1473 (ds_prev->ds_phys->ds_next_snap_obj != obj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1474
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1475 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1476 if (after_branch_point &&
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1477 ds_prev->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	1478 VERIFY(0 == zap_remove_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1479 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	1480 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	1481 VERIFY(0 == zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1482 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	1483 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	1484 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1485 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1486 if (after_branch_point &&
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1487 ds->ds_phys->ds_next_snap_obj == 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1488 /* This clone is toast. */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1489 ASSERT(ds_prev->ds_phys->ds_num_children > 1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1490 ds_prev->ds_phys->ds_num_children--;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1491 } else if (!after_branch_point) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1492 ds_prev->ds_phys->ds_next_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1493 ds->ds_phys->ds_next_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1494 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1495 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1496
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1497 zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1498
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1499 if (ds->ds_phys->ds_next_snap_obj != 0) {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1500 blkptr_t bp;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1501 dsl_dataset_t *ds_next;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1502 uint64_t itor = 0;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1503 uint64_t old_unique;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1504 int64_t used = 0, compressed = 0, uncompressed = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1505
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1506 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	1507 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1508 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1509
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1510 old_unique = dsl_dataset_unique(ds_next);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1511
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1512 dmu_buf_will_dirty(ds_next->ds_dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1513 ds_next->ds_phys->ds_prev_snap_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1514 ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1515 ds_next->ds_phys->ds_prev_snap_txg =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1516 ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1517 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1518 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1519
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1520 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1521 * Transfer to our deadlist (which will become next's
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1522 * new deadlist) any entries from next's current
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1523 * deadlist which were born before prev, and free the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1524 * other entries.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1525 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1526 * XXX we're doing this long task with the config lock held
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1527 */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1528 while (bplist_iterate(&ds_next->ds_deadlist, &itor, &bp) == 0) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1529 if (bp.blk_birth <= ds->ds_phys->ds_prev_snap_txg) {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1530 VERIFY(0 == bplist_enqueue(&ds->ds_deadlist,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1531 &bp, tx));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1532 if (ds_prev && !after_branch_point &&
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1533 bp.blk_birth >
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1534 ds_prev->ds_phys->ds_prev_snap_txg) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1535 ds_prev->ds_phys->ds_unique_bytes +=
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	1536 bp_get_dasize(dp->dp_spa, &bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1537 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1538 } else {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	1539 used += bp_get_dasize(dp->dp_spa, &bp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1540 compressed += BP_GET_PSIZE(&bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1541 uncompressed += BP_GET_UCSIZE(&bp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1542 /* XXX check return value? */
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1543 (void) dsl_free(zio, dp, tx->tx_txg,
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1544 &bp, NULL, NULL, ARC_NOWAIT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1545 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1546 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1547
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1548 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	1549
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1550 /* change snapused */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1551 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	1552 -used, -compressed, -uncompressed, tx);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1553
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1554 /* free next's deadlist */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1555 bplist_close(&ds_next->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1556 bplist_destroy(mos, ds_next->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1557
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1558 /* 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	1559 bplist_close(&ds->ds_deadlist);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1560 ds_next->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1561 ds->ds_phys->ds_deadlist_obj;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1562 VERIFY(0 == bplist_open(&ds_next->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1563 ds_next->ds_phys->ds_deadlist_obj));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1564 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1565
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1566 if (ds_next->ds_phys->ds_next_snap_obj != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1567 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1568 * Update next's unique to include blocks which
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1569 * were previously shared by only this snapshot
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1570 * and it. Those blocks will be born after the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1571 * prev snap and before this snap, and will have
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1572 * died after the next snap and before the one
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1573 * after that (ie. be on the snap after next's
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1574 * deadlist).
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1575 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1576 * XXX we're doing this long task with the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1577 * config lock held
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1578 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1579 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	1580 uint64_t space;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1581
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1582 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	1583 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	1584 FTAG, &ds_after_next));
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1585
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1586 VERIFY(0 ==
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1587 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	1588 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	1589 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	1590 ds_next->ds_phys->ds_unique_bytes += space;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1591
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1592 dsl_dataset_rele(ds_after_next, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1593 ASSERT3P(ds_next->ds_prev, ==, NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1594 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1595 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	1596 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	1597 ds_next->ds_prev = NULL;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1598 if (ds_prev) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1599 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	1600 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	1601 ds_next, &ds_next->ds_prev));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1602 }
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1603
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1604 dsl_dataset_recalc_head_uniq(ds_next);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1605
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1606 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1607 * Reduce the amount of our unconsmed refreservation
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1608 * being charged to our parent by the amount of
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1609 * new unique data we have gained.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1610 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1611 if (old_unique < ds_next->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1612 int64_t mrsdelta;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1613 uint64_t new_unique =
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1614 ds_next->ds_phys->ds_unique_bytes;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1615
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1616 ASSERT(old_unique <= new_unique);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1617 mrsdelta = MIN(new_unique - old_unique,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1618 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	1619 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	1620 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1621 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1622 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1623 dsl_dataset_rele(ds_next, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1624 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1625 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1626 * There's no next snapshot, so this is a head dataset.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1627 * Destroy the deadlist. Unless it's a clone, the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1628 * deadlist should be empty. (If it's a clone, it's
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1629 * safe to ignore the deadlist contents.)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1630 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1631 struct killarg ka;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1632
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1633 ASSERT(after_branch_point \|\| bplist_empty(&ds->ds_deadlist));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1634 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1635 bplist_destroy(mos, ds->ds_phys->ds_deadlist_obj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1636 ds->ds_phys->ds_deadlist_obj = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1637
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1638 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1639 * Free everything that we point to (that's born after
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1640 * the previous snapshot, if we are a clone)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1641 *
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1642 * 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	1643 * freed all the objects in open context.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1644 */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1645 ka.ds = ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1646 ka.zio = zio;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1647 ka.tx = tx;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1648 err = traverse_dsl_dataset(ds, ds->ds_phys->ds_prev_snap_txg,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1649 ADVANCE_POST, kill_blkptr, &ka);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1650 ASSERT3U(err, ==, 0);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1651 ASSERT(spa_version(dp->dp_spa) < SPA_VERSION_UNIQUE_ACCURATE \|\|
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1652 ds->ds_phys->ds_unique_bytes == 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1653 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1654
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1655 err = zio_wait(zio);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1656 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1657
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1658 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	1659 /* Erase the link in the dir */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1660 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	1661 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	1662 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1663 err = zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1664 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1665 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1666 /* remove from snapshot namespace */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1667 dsl_dataset_t *ds_head;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1668 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	1669 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	1670 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	1671 VERIFY(0 == dsl_dataset_get_snapname(ds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1672 #ifdef ZFS_DEBUG
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1673 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1674 uint64_t val;
6492 903545192033 6654808 FIGNORECASE lookups in a zfs xattr dir don't provide 'realname' data timh parents: 6047 diff changeset	1675
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1676 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	1677 ds->ds_snapname, &val);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1678 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1679 ASSERT3U(val, ==, obj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1680 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1681 #endif
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1682 err = dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1683 ASSERT(err == 0);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1684 dsl_dataset_rele(ds_head, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1685 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1686
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1687 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	1688 dsl_dataset_rele(ds_prev, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1689
5094 71a3e95fb9e2 PSARC 2007/342 Enhanced ZFS Pool Properties lling parents: 4967 diff changeset	1690 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx);
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1691 spa_history_internal_log(LOG_DS_DESTROY, dp->dp_spa, tx,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1692 cr, "dataset = %llu", ds->ds_object);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1693
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1694 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	1695 uint64_t count;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1696 ASSERT(0 == zap_count(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1697 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	1698 VERIFY(0 == dmu_object_free(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1699 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	1700 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	1701 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	1702 VERIFY(0 == zap_destroy(mos, ds->ds_phys->ds_props_obj, tx));
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1703 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	1704 ds->ds_dir = NULL;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1705 dsl_dataset_drain_refs(ds, tag);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1706 VERIFY(0 == dmu_object_free(mos, obj, tx));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1707 }
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1708
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1709 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1710 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	1711 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1712 uint64_t asize;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1713
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1714 if (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1715 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1716
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1717 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1718 * 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	1719 * 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	1720 * outside of the reservation.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1721 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1722 asize = MIN(dsl_dataset_unique(ds), ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1723 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	1724 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1725
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1726 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1727 * Propogate any reserved space for this snapshot to other
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1728 * snapshot checks in this sync group.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1729 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1730 if (asize > 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1731 dsl_dir_willuse_space(ds->ds_dir, asize, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1732
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1733 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1734 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1735
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1736 /* ARGSUSED */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1737 int
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1738 dsl_dataset_snapshot_check(void arg1, void arg2, dmu_tx_t *tx)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1739 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1740 dsl_dataset_t *ds = arg1;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1741 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1742 int err;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1743 uint64_t value;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1744
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1745 /*
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1746 * We don't allow multiple snapshots of the same txg. If there
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1747 * is already one, try again.
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1748 */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1749 if (ds->ds_phys->ds_prev_snap_txg >= tx->tx_txg)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1750 return (EAGAIN);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1751
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1752 /*
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1753 * Check for conflicting name snapshot name.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1754 */
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1755 err = dsl_dataset_snap_lookup(ds, snapname, &value);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1756 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1757 return (EEXIST);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1758 if (err != ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1759 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1760
3978 2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1761 /*
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1762 * 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	1763 * 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	1764 */
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1765 if (dsl_dataset_namelen(ds) + 1 + strlen(snapname) >= MAXNAMELEN)
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1766 return (ENAMETOOLONG);
2dd668007b7a 6533813 recursive snapshotting resulted in a bad stack overflow mmusante parents: 3912 diff changeset	1767
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1768 err = dsl_dataset_snapshot_reserve_space(ds, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1769 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1770 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1771
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1772 ds->ds_trysnap_txg = tx->tx_txg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1773 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1774 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1775
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1776 void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1777 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	1778 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1779 dsl_dataset_t *ds = arg1;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1780 const char *snapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1781 dsl_pool_t *dp = ds->ds_dir->dd_pool;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1782 dmu_buf_t *dbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1783 dsl_dataset_phys_t *dsphys;
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1784 uint64_t dsobj, crtxg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1785 objset_t *mos = dp->dp_meta_objset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1786 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1787
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1788 ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1789
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1790 /*
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1791 * 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	1792 */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1793 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	1794 crtxg = 1;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1795 else
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1796 crtxg = tx->tx_txg;
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1797
928 36d72fe4da29 6349314 dmu_object_type names incorrect for DSL Directories and DSL Datasets tabriz parents: 885 diff changeset	1798 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	1799 DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1800 VERIFY(0 == dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1801 dmu_buf_will_dirty(dbuf, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1802 dsphys = dbuf->db_data;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1803 bzero(dsphys, sizeof (dsl_dataset_phys_t));
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1804 dsphys->ds_dir_obj = ds->ds_dir->dd_object;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1805 dsphys->ds_fsid_guid = unique_create();
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1806 (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1807 sizeof (dsphys->ds_guid));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1808 dsphys->ds_prev_snap_obj = ds->ds_phys->ds_prev_snap_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1809 dsphys->ds_prev_snap_txg = ds->ds_phys->ds_prev_snap_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1810 dsphys->ds_next_snap_obj = ds->ds_object;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1811 dsphys->ds_num_children = 1;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1812 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	1813 dsphys->ds_creation_txg = crtxg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1814 dsphys->ds_deadlist_obj = ds->ds_phys->ds_deadlist_obj;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1815 dsphys->ds_used_bytes = ds->ds_phys->ds_used_bytes;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1816 dsphys->ds_compressed_bytes = ds->ds_phys->ds_compressed_bytes;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1817 dsphys->ds_uncompressed_bytes = ds->ds_phys->ds_uncompressed_bytes;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	1818 dsphys->ds_flags = ds->ds_phys->ds_flags;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1819 dsphys->ds_bp = ds->ds_phys->ds_bp;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1820 dmu_buf_rele(dbuf, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1821
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1822 ASSERT3U(ds->ds_prev != 0, ==, ds->ds_phys->ds_prev_snap_obj != 0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1823 if (ds->ds_prev) {
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1824 uint64_t next_clones_obj =
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1825 ds->ds_prev->ds_phys->ds_next_clones_obj;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1826 ASSERT(ds->ds_prev->ds_phys->ds_next_snap_obj ==
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1827 ds->ds_object \|\|
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1828 ds->ds_prev->ds_phys->ds_num_children > 1);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1829 if (ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object) {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1830 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1831 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1832 ds->ds_prev->ds_phys->ds_creation_txg);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	1833 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	1834 } else if (next_clones_obj != 0) {
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1835 VERIFY3U(0, ==, zap_remove_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1836 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	1837 VERIFY3U(0, ==, zap_add_int(mos,
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1838 next_clones_obj, dsobj, tx));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1839 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1840 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1841
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1842 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1843 * 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	1844 * need to increase the amount of refreservation being charged
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1845 * since our unique space is going to zero.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1846 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1847 if (ds->ds_reserved) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1848 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	1849 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	1850 add, 0, 0, tx);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1851 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1852
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1853 bplist_close(&ds->ds_deadlist);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1854 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	1855 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, <, tx->tx_txg);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1856 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	1857 ds->ds_phys->ds_prev_snap_txg = crtxg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1858 ds->ds_phys->ds_unique_bytes = 0;
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1859 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	1860 ds->ds_phys->ds_flags \|= DS_FLAG_UNIQUE_ACCURATE;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1861 ds->ds_phys->ds_deadlist_obj =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1862 bplist_create(mos, DSL_DEADLIST_BLOCKSIZE, tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1863 VERIFY(0 == bplist_open(&ds->ds_deadlist, mos,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	1864 ds->ds_phys->ds_deadlist_obj));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1865
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1866 dprintf("snap '%s' -> obj %llu\n", snapname, dsobj);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1867 err = zap_add(mos, ds->ds_phys->ds_snapnames_zapobj,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1868 snapname, 8, 1, &dsobj, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1869 ASSERT(err == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1870
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1871 if (ds->ds_prev)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1872 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	1873 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	1874 ds->ds_phys->ds_prev_snap_obj, ds, &ds->ds_prev));
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1875
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1876 dsl_pool_ds_snapshotted(ds, tx);
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	1877
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	1878 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	1879 "dataset = %llu", dsobj);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1880 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1881
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1882 void
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1883 dsl_dataset_sync(dsl_dataset_t ds, zio_t zio, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1884 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1885 ASSERT(dmu_tx_is_syncing(tx));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1886 ASSERT(ds->ds_user_ptr != NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1887 ASSERT(ds->ds_phys->ds_next_snap_obj == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1888
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1889 /*
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1890 * in case we had to change ds_fsid_guid when we opened it,
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1891 * sync it out now.
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1892 */
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1893 dmu_buf_will_dirty(ds->ds_dbuf, tx);
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1894 ds->ds_phys->ds_fsid_guid = ds->ds_fsid_guid;
602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1895
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1896 dsl_dir_dirty(ds->ds_dir, tx);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1897 dmu_objset_sync(ds->ds_user_ptr, zio, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1898 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1899
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1900 void
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1901 dsl_dataset_stats(dsl_dataset_t ds, nvlist_t nv)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1902 {
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1903 uint64_t refd, avail, uobjs, aobjs;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1904
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1905 dsl_dir_stats(ds->ds_dir, nv);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1906
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1907 dsl_dataset_space(ds, &refd, &avail, &uobjs, &aobjs);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1908 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	1909 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	1910
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1911 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATION,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1912 ds->ds_phys->ds_creation_time);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1913 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_CREATETXG,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1914 ds->ds_phys->ds_creation_txg);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1915 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFQUOTA,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1916 ds->ds_quota);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1917 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_REFRESERVATION,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1918 ds->ds_reserved);
6643 3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user eschrock parents: 6502 diff changeset	1919 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	1920 ds->ds_phys->ds_guid);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1921
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1922 if (ds->ds_phys->ds_next_snap_obj) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1923 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1924 * 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	1925 * our unique space and compression ratio.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1926 */
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1927 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USED,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1928 ds->ds_phys->ds_unique_bytes);
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1929 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_COMPRESSRATIO,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1930 ds->ds_phys->ds_compressed_bytes == 0 ? 100 :
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1931 (ds->ds_phys->ds_uncompressed_bytes * 100 /
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1932 ds->ds_phys->ds_compressed_bytes));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1933 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1934 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1935
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1936 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1937 dsl_dataset_fast_stat(dsl_dataset_t ds, dmu_objset_stats_t stat)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1938 {
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1939 stat->dds_creation_txg = ds->ds_phys->ds_creation_txg;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1940 stat->dds_inconsistent = ds->ds_phys->ds_flags & DS_FLAG_INCONSISTENT;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1941 stat->dds_guid = ds->ds_phys->ds_guid;
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1942 if (ds->ds_phys->ds_next_snap_obj) {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1943 stat->dds_is_snapshot = B_TRUE;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1944 stat->dds_num_clones = ds->ds_phys->ds_num_children - 1;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1945 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1946
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1947 /* clone origin is really a dsl_dir thing... */
5446 51fbc14b301d 6421210 zfs rollback without unmounting ahrens parents: 5383 diff changeset	1948 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	1949 if (dsl_dir_is_clone(ds->ds_dir)) {
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1950 dsl_dataset_t *ods;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1951
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	1952 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	1953 ds->ds_dir->dd_phys->dd_origin_obj, FTAG, &ods));
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	1954 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	1955 dsl_dataset_drop_ref(ods, FTAG);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1956 }
5446 51fbc14b301d 6421210 zfs rollback without unmounting ahrens parents: 5383 diff changeset	1957 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1958 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1959
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1960 uint64_t
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1961 dsl_dataset_fsid_guid(dsl_dataset_t *ds)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1962 {
4787 602d3f97842c 6393351 unique_* could be improved ahrens parents: 4603 diff changeset	1963 return (ds->ds_fsid_guid);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1964 }
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1965
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1966 void
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1967 dsl_dataset_space(dsl_dataset_t *ds,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1968 uint64_t refdbytesp, uint64_t availbytesp,
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1969 uint64_t usedobjsp, uint64_t availobjsp)
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1970 {
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1971 *refdbytesp = ds->ds_phys->ds_used_bytes;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1972 *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	1973 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	1974 *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	1975 if (ds->ds_quota != 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1976 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1977 * Adjust available bytes according to refquota
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1978 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1979 if (*refdbytesp < ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1980 availbytesp = MIN(availbytesp,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1981 ds->ds_quota - *refdbytesp);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1982 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1983 *availbytesp = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	1984 }
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1985 *usedobjsp = ds->ds_phys->ds_bp.blk_fill;
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2856 diff changeset	1986 availobjsp = DN_MAX_OBJECT - usedobjsp;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1987 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1988
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1989 boolean_t
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1990 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	1991 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1992 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	1993
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1994 ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) \|\|
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1995 dsl_pool_sync_context(dp));
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1996 if (ds->ds_prev == NULL)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1997 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1998 if (ds->ds_phys->ds_bp.blk_birth >
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	1999 ds->ds_prev->ds_phys->ds_creation_txg)
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2000 return (B_TRUE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2001 return (B_FALSE);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2002 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2003
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2004 /* ARGSUSED */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2005 static int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2006 dsl_dataset_snapshot_rename_check(void arg1, void arg2, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2007 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2008 dsl_dataset_t *ds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2009 char *newsnapname = arg2;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2010 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2011 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2012 uint64_t val;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2013 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2014
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2015 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	2016 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2017 if (err)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2018 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2019
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2020 /* 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	2021 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	2022 dsl_dataset_rele(hds, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2023
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2024 if (err == 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2025 err = EEXIST;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2026 else if (err == ENOENT)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2027 err = 0;
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2028
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2029 /* dataset name + 1 for the "@" + the new snapshot name must fit */
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2030 if (dsl_dir_namelen(ds->ds_dir) + 1 + strlen(newsnapname) >= MAXNAMELEN)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2031 err = ENAMETOOLONG;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2032
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2033 return (err);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2034 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2035
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2036 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2037 dsl_dataset_snapshot_rename_sync(void arg1, void arg2,
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2038 cred_t cr, dmu_tx_t tx)
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2039 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2040 dsl_dataset_t *ds = arg1;
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2041 const char *newsnapname = arg2;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2042 dsl_dir_t *dd = ds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2043 objset_t *mos = dd->dd_pool->dp_meta_objset;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2044 dsl_dataset_t *hds;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2045 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2046
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2047 ASSERT(ds->ds_phys->ds_next_snap_obj != 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2048
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2049 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	2050 dd->dd_phys->dd_head_dataset_obj, FTAG, &hds));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2051
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2052 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	2053 err = dsl_dataset_snap_remove(hds, ds->ds_snapname, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2054 ASSERT3U(err, ==, 0);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2055 mutex_enter(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2056 (void) strcpy(ds->ds_snapname, newsnapname);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2057 mutex_exit(&ds->ds_lock);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2058 err = zap_add(mos, hds->ds_phys->ds_snapnames_zapobj,
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2059 ds->ds_snapname, 8, 1, &ds->ds_object, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2060 ASSERT3U(err, ==, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2061
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2062 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	2063 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	2064 dsl_dataset_rele(hds, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2065 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2066
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2067 struct renamesnaparg {
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2068 dsl_sync_task_group_t *dstg;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2069 char failed[MAXPATHLEN];
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2070 char *oldsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2071 char *newsnap;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2072 };
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2073
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2074 static int
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2075 dsl_snapshot_rename_one(char name, void arg)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2076 {
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2077 struct renamesnaparg *ra = arg;
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2078 dsl_dataset_t *ds = NULL;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2079 char *cp;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2080 int err;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2081
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2082 cp = name + strlen(name);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2083 *cp = '@';
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2084 (void) strcpy(cp + 1, ra->oldsnap);
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2085
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2086 /*
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2087 * For recursive snapshot renames the parent won't be changing
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2088 * so we just pass name for both the to/from argument.
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2089 */
7312 3992f9a413c2 6736061 recursive rename of snapshot fails if child snapshot doesn't exist Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7265 diff changeset	2090 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	2091 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	2092 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	2093 } else if (err) {
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2094 (void) strcpy(ra->failed, name);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2095 return (err);
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2096 }
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2097
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2098 #ifdef _KERNEL
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2099 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2100 * 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	2101 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2102 (void) zfs_unmount_snap(name, NULL);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2103 #endif
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2104 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	2105 *cp = '\0';
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2106 if (err == ENOENT) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2107 return (0);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2108 } else if (err) {
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2109 (void) strcpy(ra->failed, name);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2110 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2111 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2112
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2113 dsl_sync_task_create(ra->dstg, dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2114 dsl_dataset_snapshot_rename_sync, ds, ra->newsnap, 0);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2115
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2116 return (0);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2117 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2118
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2119 static int
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2120 dsl_recursive_rename(char oldname, const char newname)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2121 {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2122 int err;
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2123 struct renamesnaparg *ra;
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2124 dsl_sync_task_t *dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2125 spa_t *spa;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2126 char cp, fsname = spa_strdup(oldname);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2127 int len = strlen(oldname);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2128
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2129 /* truncate the snapshot name to get the fsname */
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2130 cp = strchr(fsname, '@');
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2131 *cp = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2132
4603 c7840c367d00 6494569 zfs recv -d pool/<doesn't exist> core dumps for top-level filesystem backups ahrens parents: 4577 diff changeset	2133 err = spa_open(fsname, &spa, FTAG);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2134 if (err) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2135 kmem_free(fsname, len + 1);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2136 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2137 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2138 ra = kmem_alloc(sizeof (struct renamesnaparg), KM_SLEEP);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2139 ra->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2140
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2141 ra->oldsnap = strchr(oldname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2142 ra->newsnap = strchr(newname, '@') + 1;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2143 *ra->failed = '\0';
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2144
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2145 err = dmu_objset_find(fsname, dsl_snapshot_rename_one, ra,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2146 DS_FIND_CHILDREN);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2147 kmem_free(fsname, len + 1);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2148
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2149 if (err == 0) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2150 err = dsl_sync_task_group_wait(ra->dstg);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2151 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2152
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2153 for (dst = list_head(&ra->dstg->dstg_tasks); dst;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2154 dst = list_next(&ra->dstg->dstg_tasks, dst)) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2155 dsl_dataset_t *ds = dst->dst_arg1;
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2156 if (dst->dst_err) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2157 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	2158 (void) strcat(ra->failed, "@");
1a9b4fbc0d2a 6479884 want 'zfs rename -r' to recursively rename snapshots (fix lint) mmusante parents: 4007 diff changeset	2159 (void) strcat(ra->failed, ra->newsnap);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2160 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2161 dsl_dataset_rele(ds, ra->dstg);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2162 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2163
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2164 if (err)
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2165 (void) strcpy(oldname, ra->failed);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2166
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2167 dsl_sync_task_group_destroy(ra->dstg);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2168 kmem_free(ra, sizeof (struct renamesnaparg));
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2169 spa_close(spa, FTAG);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2170 return (err);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2171 }
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2172
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	2173 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	2174 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	2175 {
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2176 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	2177
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2178 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	2179 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	2180
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2181 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	2182 }
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2183
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2184 #pragma weak dmu_objset_rename = dsl_dataset_rename
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2185 int
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2186 dsl_dataset_rename(char oldname, const char newname, boolean_t recursive)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2187 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2188 dsl_dir_t *dd;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2189 dsl_dataset_t *ds;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2190 const char *tail;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2191 int err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2192
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2193 err = dsl_dir_open(oldname, FTAG, &dd, &tail);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	2194 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 928 diff changeset	2195 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2196 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	2197 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	2198
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2199 /* 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	2200 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	2201 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	2202 &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	2203
e80d40447f27 6355623 zfs rename to a valid dataset name, but its snapshot name becomes too long, panics the system mmusante parents: 4543 diff changeset	2204 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	2205 err = dsl_dir_rename(dd, newname);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2206 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2207 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2208 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2209 if (tail[0] != '@') {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2210 /* the name ended in a nonexistant component */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2211 dsl_dir_close(dd, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2212 return (ENOENT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2213 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2214
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2215 dsl_dir_close(dd, FTAG);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2216
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2217 /* new name must be snapshot in same filesystem */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2218 tail = strchr(newname, '@');
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2219 if (tail == NULL)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2220 return (EINVAL);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2221 tail++;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2222 if (strncmp(oldname, newname, tail - newname) != 0)
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2223 return (EXDEV);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2224
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2225 if (recursive) {
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2226 err = dsl_recursive_rename(oldname, newname);
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2227 } else {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2228 err = dsl_dataset_hold(oldname, FTAG, &ds);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2229 if (err)
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2230 return (err);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2231
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2232 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2233 dsl_dataset_snapshot_rename_check,
c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2234 dsl_dataset_snapshot_rename_sync, ds, (char *)tail, 1);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2235
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2236 dsl_dataset_rele(ds, FTAG);
4007 c6f5c6753018 PSARC 2007/142 zfs rename -r mmusante parents: 3978 diff changeset	2237 }
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2238
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2239 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2240 }
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2241
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2242 struct promotenode {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2243 list_node_t link;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2244 dsl_dataset_t *ds;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2245 };
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2246
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2247 struct promotearg {
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2248 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	2249 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	2250 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2251 };
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2252
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2253 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	2254
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2255 /* ARGSUSED */
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2256 static int
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2257 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	2258 {
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2259 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2260 struct promotearg *pa = arg2;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2261 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	2262 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	2263 int err;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2264
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2265 /* 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	2266 if (!dsl_dir_is_clone(hds->ds_dir))
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2267 return (EINVAL);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2268
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2269 /* Since this is so expensive, don't do the preliminary check */
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2270 if (!dmu_tx_is_syncing(tx))
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2271 return (0);
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2272
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2273 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	2274 return (EXDEV);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2275
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2276 /* 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	2277 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2278 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	2279 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	2280 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	2281 if (err)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2282 return (err);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2283
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2284 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2285 * 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	2286 *
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2287 * 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	2288 * to used for each snapshot:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2289 * (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	2290 * So each snapshot gave birth to:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2291 * (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	2292 * 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	2293 * (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	2294 * Which simplifies to:
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2295 * 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	2296 * 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	2297 * 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	2298 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2299 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	2300 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	2301 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	2302 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	2303 snap = list_next(&pa->shared_snaps, snap)) {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2304 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	2305 dsl_dataset_t *ds = snap->ds;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2306
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2307 /* 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	2308 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	2309 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	2310 if (err == 0)
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2311 return (EEXIST);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2312 if (err != ENOENT)
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2313 return (err);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2314
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2315 /* 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	2316 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	2317 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2318
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2319 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	2320 &dlused, &dlcomp, &dluncomp))
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2321 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2322 pa->used += dlused;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2323 pa->comp += dlcomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2324 pa->uncomp += dluncomp;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2325 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2326
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2327 /*
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2328 * 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	2329 * 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	2330 */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2331 if (pa->origin_origin) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2332 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	2333 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	2334 pa->uncomp -= pa->origin_origin->ds_phys->ds_uncompressed_bytes;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2335 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2336
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2337 /* 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	2338 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	2339 pa->used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2340 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2341 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2342
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2343 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2344 * 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	2345 * 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	2346 * 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	2347 * 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	2348 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2349 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	2350 uint64_t space;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2351
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2352 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2353 * 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	2354 * 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	2355 * these snaplist_space() -> bplist_space_birthrange()
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2356 * 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	2357 * iterate over all bps.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2358 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2359 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2360 err = snaplist_space(&pa->shared_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2361 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	2362 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2363 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2364
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2365 err = snaplist_space(&pa->clone_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2366 snap->ds->ds_origin_txg, &space);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2367 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2368 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2369 pa->cloneusedsnap += space;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2370 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2371 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	2372 err = snaplist_space(&pa->origin_snaps,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2373 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	2374 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2375 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2376 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2377
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2378 return (0);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2379 }
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2380
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2381 static void
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2382 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	2383 {
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2384 dsl_dataset_t *hds = arg1;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2385 struct promotearg *pa = arg2;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2386 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	2387 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	2388 dsl_dataset_t *origin_head;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2389 dsl_dir_t *dd = hds->ds_dir;
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2390 dsl_pool_t *dp = hds->ds_dir->dd_pool;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2391 dsl_dir_t *odd = NULL;
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2392 uint64_t oldnext_obj;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2393 int64_t delta;
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2394
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2395 ASSERT(0 == (hds->ds_phys->ds_flags & DS_FLAG_NOPROMOTE));
712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2396
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2397 snap = list_head(&pa->origin_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2398 origin_head = snap->ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2399
2417 694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	2400 /*
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2401 * 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	2402 * changing.
694d5de97348 6444346 zfs promote fails in zone ahrens parents: 2207 diff changeset	2403 */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2404 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	2405 NULL, FTAG, &odd));
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2406
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2407 /* change origin's next snap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2408 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	2409 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	2410 snap = list_tail(&pa->clone_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2411 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	2412 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	2413
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2414 /* change the origin's next clone */
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2415 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	2416 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	2417 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	2418 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	2419 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	2420 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	2421 oldnext_obj, tx));
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2422 }
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2423
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2424 /* change origin */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2425 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	2426 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	2427 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	2428 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	2429 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	2430 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	2431 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	2432
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2433 /* move snapshots to this dir */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2434 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	2435 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	2436 dsl_dataset_t *ds = snap->ds;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2437
7237 f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2438 /* unregister props as dsl_dir is changing */
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2439 if (ds->ds_user_ptr) {
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2440 ds->ds_user_evict_func(ds, ds->ds_user_ptr);
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2441 ds->ds_user_ptr = NULL;
f47d41541b14 PSARC 2008/393 zfs primarycache and secondarycache properties ek110237 parents: 7077 diff changeset	2442 }
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2443 /* move snap name entry */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2444 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	2445 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	2446 ds->ds_snapname, tx));
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2447 VERIFY(0 == zap_add(dp->dp_meta_objset,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2448 hds->ds_phys->ds_snapnames_zapobj, ds->ds_snapname,
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2449 8, 1, &ds->ds_object, tx));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2450 /* change containing dsl_dir */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2451 dmu_buf_will_dirty(ds->ds_dbuf, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2452 ASSERT3U(ds->ds_phys->ds_dir_obj, ==, odd->dd_object);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2453 ds->ds_phys->ds_dir_obj = dd->dd_object;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2454 ASSERT3P(ds->ds_dir, ==, odd);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2455 dsl_dir_close(ds->ds_dir, ds);
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	2456 VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2457 NULL, ds, &ds->ds_dir));
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2458
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2459 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	2460 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2461
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2462 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2463 * Change space accounting.
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2464 * 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	2465 * 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	2466 * 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	2467 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2468
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2469 delta = pa->cloneusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2470 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	2471 ASSERT3S(delta, >=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2472 ASSERT3U(pa->used, >=, delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2473 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	2474 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	2475 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	2476
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2477 delta = pa->originusedsnap -
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2478 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	2479 ASSERT3S(delta, <=, 0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2480 ASSERT3U(pa->used, >=, -delta);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2481 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	2482 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	2483 -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	2484
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2485 origin_ds->ds_phys->ds_unique_bytes = pa->unique;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2486
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2487 /* log history record */
12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2488 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	2489 cr, "dataset = %llu", hds->ds_object);
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 4009 diff changeset	2490
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2491 dsl_dir_close(odd, FTAG);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2492 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2493
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2494 static char *snaplist_tag = "snaplist";
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2495 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2496 * 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	2497 * (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	2498 * 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	2499 * 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	2500 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2501 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2502 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	2503 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	2504 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2505 uint64_t obj = last_obj;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2506
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2507 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	2508
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2509 list_create(l, sizeof (struct promotenode),
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2510 offsetof(struct promotenode, link));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2511
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2512 while (obj != first_obj) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2513 dsl_dataset_t *ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2514 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2515 int err;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2516
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2517 if (own) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2518 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	2519 0, snaplist_tag, &ds);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2520 if (err == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2521 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	2522 } else {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2523 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	2524 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2525 if (err == ENOENT) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2526 /* lost race with snapshot destroy */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2527 struct promotenode *last = list_tail(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2528 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	2529 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	2530 continue;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2531 } else if (err) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2532 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2533 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2534
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2535 if (first_obj == 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2536 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	2537
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2538 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	2539 snap->ds = ds;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2540 list_insert_tail(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2541 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	2542 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2543
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2544 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2545 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2546
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2547 static int
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2548 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	2549 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2550 struct promotenode *snap;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2551
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2552 *spacep = 0;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2553 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	2554 uint64_t used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2555 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	2556 mintxg, UINT64_MAX, &used);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2557 if (err)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2558 return (err);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2559 *spacep += used;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2560 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2561 return (0);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2562 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2563
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2564 static void
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2565 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	2566 {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2567 struct promotenode *snap;
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 if (!list_link_active(&l->list_head))
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2570 return;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2571
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2572 while ((snap = list_tail(l)) != NULL) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2573 list_remove(l, snap);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2574 if (own)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2575 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	2576 else
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2577 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	2578 kmem_free(snap, sizeof (struct promotenode));
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2579 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2580 list_destroy(l);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2581 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2582
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 * Promote a clone. Nomenclature note:
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2585 * "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	2586 * "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	2587 * "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	2588 * (filesystem/volume) for the origin
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2589 * "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	2590 * 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	2591 */
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2592 int
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2593 dsl_dataset_promote(const char *name)
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2594 {
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2595 dsl_dataset_t *ds;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2596 dsl_dir_t *dd;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2597 dsl_pool_t *dp;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2598 dmu_object_info_t doi;
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2599 struct promotearg pa = { 0 };
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	2600 struct promotenode *snap;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2601 int err;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2602
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2603 err = dsl_dataset_hold(name, FTAG, &ds);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2604 if (err)
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2605 return (err);
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2606 dd = ds->ds_dir;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2607 dp = dd->dd_pool;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2608
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2609 err = dmu_object_info(dp->dp_meta_objset,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2610 ds->ds_phys->ds_snapnames_zapobj, &doi);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2611 if (err) {
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2612 dsl_dataset_rele(ds, FTAG);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2613 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2614 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2615
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2616 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	2617 dsl_dataset_rele(ds, FTAG);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2618 return (EINVAL);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2619 }
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2620
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2621 /*
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2622 * 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	2623 * 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	2624 * 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	2625 * namespace.
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2626 */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2627 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	2628
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2629 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	2630 &pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2631 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2632 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2633
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2634 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	2635 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2636 goto out;
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2637
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2638 snap = list_head(&pa.shared_snaps);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2639 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	2640 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	2641 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	2642 if (err != 0)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2643 goto out;
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 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	2646 err = dsl_dataset_own_obj(dp,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2647 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	2648 0, FTAG, &pa.origin_origin);
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2649 if (err != 0)
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2650 goto out;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2651 }
7390 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 out:
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2654 rw_exit(&dp->dp_config_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2655
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2656 /*
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2657 * Add in 128x the snapnames zapobj size, since we will be moving
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2658 * a bunch of snapnames to the promoted ds, and dirtying their
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2659 * bonus buffers.
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2660 */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2661 if (err == 0) {
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2662 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	2663 dsl_dataset_promote_sync, ds, &pa,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2664 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	2665 }
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2666
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2667 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	2668 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	2669 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	2670 if (pa.origin_origin)
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2671 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	2672 dsl_dataset_rele(ds, FTAG);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2673 return (err);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1758 diff changeset	2674 }
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2675
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2676 struct cloneswaparg {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2677 dsl_dataset_t cds; / clone dataset */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2678 dsl_dataset_t ohds; / origin's head dataset */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2679 boolean_t force;
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2680 int64_t unused_refres_delta; /* change in unconsumed refreservation */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2681 };
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2682
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2683 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2684 static int
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2685 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	2686 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2687 struct cloneswaparg *csa = arg1;
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2688
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2689 /* they should both be heads */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2690 if (dsl_dataset_is_snapshot(csa->cds) \|\|
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2691 dsl_dataset_is_snapshot(csa->ohds))
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2692 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2693
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2694 /* the branch point should be just before them */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2695 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	2696 return (EINVAL);
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2697
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2698 /* cds should be the clone */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2699 if (csa->cds->ds_prev->ds_phys->ds_next_snap_obj !=
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2700 csa->ohds->ds_object)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2701 return (EINVAL);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2702
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2703 /* the clone should be a child of the origin */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2704 if (csa->cds->ds_dir->dd_parent != csa->ohds->ds_dir)
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2705 return (EINVAL);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2706
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2707 /* ohds shouldn't be modified unless 'force' */
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2708 if (!csa->force && dsl_dataset_modified_since_lastsnap(csa->ohds))
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2709 return (ETXTBSY);
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2710
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2711 /* adjust amount of any unconsumed refreservation */
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2712 csa->unused_refres_delta =
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2713 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2714 csa->ohds->ds_phys->ds_unique_bytes) -
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2715 (int64_t)MIN(csa->ohds->ds_reserved,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2716 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2717
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2718 if (csa->unused_refres_delta > 0 &&
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2719 csa->unused_refres_delta >
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2720 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	2721 return (ENOSPC);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2722
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2723 return (0);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2724 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2725
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2726 /* ARGSUSED */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2727 static void
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2728 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	2729 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2730 struct cloneswaparg *csa = arg1;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2731 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	2732
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2733 ASSERT(csa->cds->ds_reserved == 0);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2734 ASSERT(csa->cds->ds_quota == csa->ohds->ds_quota);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2735
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2736 dmu_buf_will_dirty(csa->cds->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2737 dmu_buf_will_dirty(csa->ohds->ds_dbuf, tx);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2738 dmu_buf_will_dirty(csa->cds->ds_prev->ds_dbuf, tx);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2739
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2740 if (csa->cds->ds_user_ptr != NULL) {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2741 csa->cds->ds_user_evict_func(csa->cds, csa->cds->ds_user_ptr);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2742 csa->cds->ds_user_ptr = NULL;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2743 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2744
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2745 if (csa->ohds->ds_user_ptr != NULL) {
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2746 csa->ohds->ds_user_evict_func(csa->ohds,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2747 csa->ohds->ds_user_ptr);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2748 csa->ohds->ds_user_ptr = NULL;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2749 }
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2750
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2751 /* reset origin's unique bytes */
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2752 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	2753 csa->cds->ds_prev->ds_phys->ds_prev_snap_txg, UINT64_MAX,
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2754 &csa->cds->ds_prev->ds_phys->ds_unique_bytes));
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2755
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2756 /* swap blkptrs */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2757 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2758 blkptr_t tmp;
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2759 tmp = csa->ohds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2760 csa->ohds->ds_phys->ds_bp = csa->cds->ds_phys->ds_bp;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2761 csa->cds->ds_phys->ds_bp = tmp;
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2762 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2763
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2764 /* set dd__bytes /
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2765 {
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2766 int64_t dused, dcomp, duncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2767 uint64_t cdl_used, cdl_comp, cdl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2768 uint64_t odl_used, odl_comp, odl_uncomp;
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2769
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2770 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	2771 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	2772
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2773 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	2774 &cdl_comp, &cdl_uncomp));
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2775 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	2776 &odl_comp, &odl_uncomp));
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2777
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2778 dused = csa->cds->ds_phys->ds_used_bytes + cdl_used -
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2779 (csa->ohds->ds_phys->ds_used_bytes + odl_used);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2780 dcomp = csa->cds->ds_phys->ds_compressed_bytes + cdl_comp -
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2781 (csa->ohds->ds_phys->ds_compressed_bytes + odl_comp);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2782 duncomp = csa->cds->ds_phys->ds_uncompressed_bytes +
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2783 cdl_uncomp -
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2784 (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	2785
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2786 dsl_dir_diduse_space(csa->ohds->ds_dir, DD_USED_HEAD,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2787 dused, dcomp, duncomp, tx);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2788 dsl_dir_diduse_space(csa->cds->ds_dir, DD_USED_HEAD,
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2789 -dused, -dcomp, -duncomp, tx);
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2790
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2791 /*
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2792 * 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	2793 * 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	2794 * 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	2795 * changing that affects the snapused).
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2796 */
6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	2797 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	2798 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	2799 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	2800 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	2801 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	2802 DD_USED_HEAD, DD_USED_SNAP, tx);
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2803 }
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2804
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2805 #define SWITCH64(x, y) \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2806 { \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2807 uint64_t __tmp = (x); \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2808 (x) = (y); \
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2809 (y) = __tmp; \
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2810 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2811
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2812 /* swap ds__bytes /
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2813 SWITCH64(csa->ohds->ds_phys->ds_used_bytes,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2814 csa->cds->ds_phys->ds_used_bytes);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2815 SWITCH64(csa->ohds->ds_phys->ds_compressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2816 csa->cds->ds_phys->ds_compressed_bytes);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2817 SWITCH64(csa->ohds->ds_phys->ds_uncompressed_bytes,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2818 csa->cds->ds_phys->ds_uncompressed_bytes);
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2819 SWITCH64(csa->ohds->ds_phys->ds_unique_bytes,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2820 csa->cds->ds_phys->ds_unique_bytes);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2821
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2822 /* 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	2823 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	2824 csa->unused_refres_delta, 0, 0, tx);
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2825
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2826 /* swap deadlists */
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2827 bplist_close(&csa->cds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2828 bplist_close(&csa->ohds->ds_deadlist);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2829 SWITCH64(csa->ohds->ds_phys->ds_deadlist_obj,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2830 csa->cds->ds_phys->ds_deadlist_obj);
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2831 VERIFY(0 == bplist_open(&csa->cds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2832 csa->cds->ds_phys->ds_deadlist_obj));
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2833 VERIFY(0 == bplist_open(&csa->ohds->ds_deadlist, dp->dp_meta_objset,
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2834 csa->ohds->ds_phys->ds_deadlist_obj));
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2835 }
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2836
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2837 /*
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2838 * Swap 'clone' with its origin head file system. Used at the end
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2839 * of "online recv" to swizzle the file system to the new version.
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2840 */
6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2841 int
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2842 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	2843 boolean_t force)
5326 6752aa2bd5bc 6425096 want online 'zfs recv' (read only and read/write) ek110237 parents: 5094 diff changeset	2844 {
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2845 struct cloneswaparg csa;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2846 int error;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2847
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2848 ASSERT(clone->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2849 ASSERT(origin_head->ds_owner);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2850 retry:
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2851 /* Need exclusive access for the swap */
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2852 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	2853 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	2854 rw_exit(&clone->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2855 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	2856 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	2857 rw_exit(&origin_head->ds_rwlock);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2858 goto retry;
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2859 }
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2860 }
5367 c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2861 csa.cds = clone;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2862 csa.ohds = origin_head;
c40abbe796be PSARC/2007/574 zfs send -R ahrens parents: 5326 diff changeset	2863 csa.force = force;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2864 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	2865 dsl_dataset_clone_swap_check,
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2866 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	2867 return (error);
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
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2870 /*
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2871 * Given a pool name and a dataset object number in that pool,
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2872 * return the name of that dataset.
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2873 */
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2874 int
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2875 dsl_dsobj_to_dsname(char pname, uint64_t obj, char buf)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2876 {
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2877 spa_t *spa;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2878 dsl_pool_t *dp;
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2879 dsl_dataset_t *ds;
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2880 int error;
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2881
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2882 if ((error = spa_open(pname, &spa, FTAG)) != 0)
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2883 return (error);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2884 dp = spa_get_dsl(spa);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2885 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	2886 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	2887 dsl_dataset_name(ds, buf);
47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2888 dsl_dataset_rele(ds, FTAG);
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2889 }
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2890 rw_exit(&dp->dp_config_rwlock);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2891 spa_close(spa, FTAG);
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2892
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2893 return (error);
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3547 diff changeset	2894 }
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2895
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2896 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2897 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	2898 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	2899 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2900 int error = 0;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2901
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2902 ASSERT3S(asize, >, 0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2903
5831 48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	2904 /*
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	2905 * *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	2906 * unconsumed refreservation space.
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	2907 */
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	2908 *ref_rsrv = 0;
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	2909
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2910 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2911 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2912 * Make a space adjustment for reserved bytes.
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2913 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2914 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	2915 ASSERT3U(*used, >=,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2916 ds->ds_reserved - ds->ds_phys->ds_unique_bytes);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2917 *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	2918 *ref_rsrv =
48655d6b290b 6630761 In sub-filesystem, available space is less than refreservation space ck153898 parents: 5712 diff changeset	2919 asize - MIN(asize, parent_delta(ds, asize + inflight));
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2920 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2921
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2922 if (!check_quota \|\| ds->ds_quota == 0) {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2923 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2924 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2925 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2926 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2927 * 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	2928 * 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	2929 * 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	2930 * may free up space for us).
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2931 */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2932 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	2933 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	2934 error = ERESTART;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2935 else
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2936 error = EDQUOT;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2937 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2938 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2939
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2940 return (error);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2941 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2942
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2943 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2944 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2945 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	2946 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2947 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2948 uint64_t *quotap = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2949 uint64_t new_quota = *quotap;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2950
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2951 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	2952 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2953
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2954 if (new_quota == 0)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2955 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2956
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2957 if (new_quota < ds->ds_phys->ds_used_bytes \|\|
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2958 new_quota < ds->ds_reserved)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2959 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2960
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2961 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2962 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2963
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2964 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2965 void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2966 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	2967 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2968 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2969 uint64_t *quotap = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2970 uint64_t new_quota = *quotap;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2971
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2972 dmu_buf_will_dirty(ds->ds_dbuf, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2973
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2974 ds->ds_quota = new_quota;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2975
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2976 dsl_prop_set_uint64_sync(ds->ds_dir, "refquota", new_quota, cr, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2977
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2978 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	2979 tx, cr, "%lld dataset = %llu ",
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2980 (longlong_t)new_quota, ds->ds_object);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2981 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2982
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2983 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2984 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	2985 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2986 dsl_dataset_t *ds;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2987 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2988
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	2989 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2990 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2991 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	2992
5481 1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2993 if (quota != ds->ds_quota) {
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2994 /*
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2995 * 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	2996 * want to make sure the file freeing takes effect.
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2997 */
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2998 txg_wait_open(ds->ds_dir->dd_pool, 0);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	2999
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3000 err = dsl_sync_task_do(ds->ds_dir->dd_pool,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3001 dsl_dataset_set_quota_check, dsl_dataset_set_quota_sync,
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3002 ds, &quota, 0);
1364fb7de75d 6619182 new non-sparse zvols should get refreservations ck153898 parents: 5475 diff changeset	3003 }
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3004 dsl_dataset_rele(ds, FTAG);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3005 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3006 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3007
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3008 static int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3009 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	3010 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3011 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3012 uint64_t *reservationp = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3013 uint64_t new_reservation = *reservationp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3014 int64_t delta;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3015 uint64_t unique;
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 if (new_reservation > INT64_MAX)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3018 return (EOVERFLOW);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3019
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3020 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	3021 SPA_VERSION_REFRESERVATION)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3022 return (ENOTSUP);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3023
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3024 if (dsl_dataset_is_snapshot(ds))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3025 return (EINVAL);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3026
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3027 /*
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3028 * 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	3029 * space estimates may be inaccurate.
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 (!dmu_tx_is_syncing(tx))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3032 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3033
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3034 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3035 unique = dsl_dataset_unique(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3036 delta = MAX(unique, new_reservation) - MAX(unique, ds->ds_reserved);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3037 mutex_exit(&ds->ds_lock);
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 (delta > 0 &&
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3040 delta > dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE))
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3041 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3042 if (delta > 0 && ds->ds_quota > 0 &&
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3043 new_reservation > ds->ds_quota)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3044 return (ENOSPC);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3045
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3046 return (0);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3047 }
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3048
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3049 /* ARGSUSED */
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3050 static void
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3051 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	3052 dmu_tx_t *tx)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3053 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3054 dsl_dataset_t *ds = arg1;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3055 uint64_t *reservationp = arg2;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3056 uint64_t new_reservation = *reservationp;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3057 uint64_t unique;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3058 int64_t delta;
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 dmu_buf_will_dirty(ds->ds_dbuf, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3061
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3062 mutex_enter(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3063 unique = dsl_dataset_unique(ds);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3064 delta = MAX(0, (int64_t)(new_reservation - unique)) -
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3065 MAX(0, (int64_t)(ds->ds_reserved - unique));
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3066 ds->ds_reserved = new_reservation;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3067 mutex_exit(&ds->ds_lock);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3068
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3069 dsl_prop_set_uint64_sync(ds->ds_dir, "refreservation",
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3070 new_reservation, cr, tx);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3071
7390 6d408f0a5fbd PSARC/2008/518 ZFS space accounting enhancements Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7385 diff changeset	3072 dsl_dir_diduse_space(ds->ds_dir, DD_USED_REFRSRV, delta, 0, 0, tx);
5378 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 spa_history_internal_log(LOG_DS_REFRESERV,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3075 ds->ds_dir->dd_pool->dp_spa, tx, cr, "%lld dataset = %llu",
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3076 (longlong_t)new_reservation,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3077 ds->ds_dir->dd_phys->dd_head_dataset_obj);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3078 }
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 int
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3081 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	3082 {
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3083 dsl_dataset_t *ds;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3084 int err;
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3085
6689 47572a2f5e73 6610506 Eliminate or improve retry logic from callers of dmu_objset_open() maybee parents: 6643 diff changeset	3086 err = dsl_dataset_hold(dsname, FTAG, &ds);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3087 if (err)
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3088 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3089
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3090 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	3091 dsl_dataset_set_reservation_check,
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3092 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	3093 dsl_dataset_rele(ds, FTAG);
5378 111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3094 return (err);
111aa1baa84a PSARC 2007/555 zfs fs-only quotas and reservations ck153898 parents: 5367 diff changeset	3095 }

Mercurial > illumos > illumos-gate

annotate usr/src/uts/common/fs/zfs/dsl_dataset.c @ 7390:6d408f0a5fbd