illumos/wpa: usr/src/uts/common/fs/zfs/dsl

annotate usr/src/uts/common/fs/zfs/dsl_destroy.c @ 14022:624fa8f61951

3642 dsl_scan_active() should not issue I/O to determine if async destroying is active 3643 txg_delay should not hold the tc_lock Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: Adam Leventhal <ahl@delphix.com> Approved by: Gordon Ross <gwr@nexenta.com>

author	George Wilson <george.wilson@delphix.com>
date	Tue, 23 Apr 2013 09:31:42 -0800
parents	d7059eb1884c
children

rev	line source
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	1 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	2 * CDDL HEADER START
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	3 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	4 * The contents of this file are subject to the terms of the
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	5 * Common Development and Distribution License (the "License").
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	6 * You may not use this file except in compliance with the License.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	7 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	9 * or http://www.opensolaris.org/os/licensing.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	10 * See the License for the specific language governing permissions
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	11 * and limitations under the License.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	12 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	13 * When distributing Covered Code, include this CDDL HEADER in each
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	15 * If applicable, add the following below this CDDL HEADER, with the
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	16 * fields enclosed by brackets "[]" replaced with your own identifying
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	17 * information: Portions Copyright [yyyy] [name of copyright owner]
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	18 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	19 * CDDL HEADER END
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	20 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	21 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	23 * Copyright (c) 2013 by Delphix. All rights reserved.
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	24 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	25
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	26 #include <sys/zfs_context.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	27 #include <sys/dsl_userhold.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	28 #include <sys/dsl_dataset.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	29 #include <sys/dsl_synctask.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	30 #include <sys/dmu_tx.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	31 #include <sys/dsl_pool.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	32 #include <sys/dsl_dir.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	33 #include <sys/dmu_traverse.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	34 #include <sys/dsl_scan.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	35 #include <sys/dmu_objset.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	36 #include <sys/zap.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	37 #include <sys/zfeature.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	38 #include <sys/zfs_ioctl.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	39 #include <sys/dsl_deleg.h>
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	40
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	41 typedef struct dmu_snapshots_destroy_arg {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	42 nvlist_t *dsda_snaps;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	43 nvlist_t *dsda_successful_snaps;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	44 boolean_t dsda_defer;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	45 nvlist_t *dsda_errlist;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	46 } dmu_snapshots_destroy_arg_t;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	47
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	48 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	49 * ds must be owned.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	50 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	51 static int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	52 dsl_destroy_snapshot_check_impl(dsl_dataset_t *ds, boolean_t defer)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	53 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	54 if (!dsl_dataset_is_snapshot(ds))
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	55 return (SET_ERROR(EINVAL));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	56
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	57 if (dsl_dataset_long_held(ds))
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	58 return (SET_ERROR(EBUSY));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	59
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	60 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	61 * Only allow deferred destroy on pools that support it.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	62 * NOTE: deferred destroy is only supported on snapshots.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	63 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	64 if (defer) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	65 if (spa_version(ds->ds_dir->dd_pool->dp_spa) <
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	66 SPA_VERSION_USERREFS)
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	67 return (SET_ERROR(ENOTSUP));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	68 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	69 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	70
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	71 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	72 * If this snapshot has an elevated user reference count,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	73 * we can't destroy it yet.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	74 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	75 if (ds->ds_userrefs > 0)
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	76 return (SET_ERROR(EBUSY));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	77
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	78 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	79 * Can't delete a branch point.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	80 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	81 if (ds->ds_phys->ds_num_children > 1)
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	82 return (SET_ERROR(EEXIST));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	83
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	84 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	85 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	86
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	87 static int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	88 dsl_destroy_snapshot_check(void arg, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	89 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	90 dmu_snapshots_destroy_arg_t *dsda = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	91 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	92 nvpair_t *pair;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	93 int error = 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	94
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	95 if (!dmu_tx_is_syncing(tx))
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	96 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	97
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	98 for (pair = nvlist_next_nvpair(dsda->dsda_snaps, NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	99 pair != NULL; pair = nvlist_next_nvpair(dsda->dsda_snaps, pair)) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	100 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	101
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	102 error = dsl_dataset_hold(dp, nvpair_name(pair),
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	103 FTAG, &ds);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	104
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	105 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	106 * If the snapshot does not exist, silently ignore it
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	107 * (it's "already destroyed").
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	108 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	109 if (error == ENOENT)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	110 continue;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	111
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	112 if (error == 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	113 error = dsl_destroy_snapshot_check_impl(ds,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	114 dsda->dsda_defer);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	115 dsl_dataset_rele(ds, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	116 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	117
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	118 if (error == 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	119 fnvlist_add_boolean(dsda->dsda_successful_snaps,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	120 nvpair_name(pair));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	121 } else {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	122 fnvlist_add_int32(dsda->dsda_errlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	123 nvpair_name(pair), error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	124 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	125 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	126
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	127 pair = nvlist_next_nvpair(dsda->dsda_errlist, NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	128 if (pair != NULL)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	129 return (fnvpair_value_int32(pair));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	130 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	131 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	132
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	133 struct process_old_arg {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	134 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	135 dsl_dataset_t *ds_prev;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	136 boolean_t after_branch_point;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	137 zio_t *pio;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	138 uint64_t used, comp, uncomp;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	139 };
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	140
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	141 static int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	142 process_old_cb(void arg, const blkptr_t bp, dmu_tx_t *tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	143 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	144 struct process_old_arg *poa = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	145 dsl_pool_t *dp = poa->ds->ds_dir->dd_pool;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	146
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	147 if (bp->blk_birth <= poa->ds->ds_phys->ds_prev_snap_txg) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	148 dsl_deadlist_insert(&poa->ds->ds_deadlist, bp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	149 if (poa->ds_prev && !poa->after_branch_point &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	150 bp->blk_birth >
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	151 poa->ds_prev->ds_phys->ds_prev_snap_txg) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	152 poa->ds_prev->ds_phys->ds_unique_bytes +=
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	153 bp_get_dsize_sync(dp->dp_spa, bp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	154 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	155 } else {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	156 poa->used += bp_get_dsize_sync(dp->dp_spa, bp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	157 poa->comp += BP_GET_PSIZE(bp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	158 poa->uncomp += BP_GET_UCSIZE(bp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	159 dsl_free_sync(poa->pio, dp, tx->tx_txg, bp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	160 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	161 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	162 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	163
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	164 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	165 process_old_deadlist(dsl_dataset_t ds, dsl_dataset_t ds_prev,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	166 dsl_dataset_t ds_next, boolean_t after_branch_point, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	167 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	168 struct process_old_arg poa = { 0 };
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	169 dsl_pool_t *dp = ds->ds_dir->dd_pool;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	170 objset_t *mos = dp->dp_meta_objset;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	171 uint64_t deadlist_obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	172
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	173 ASSERT(ds->ds_deadlist.dl_oldfmt);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	174 ASSERT(ds_next->ds_deadlist.dl_oldfmt);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	175
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	176 poa.ds = ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	177 poa.ds_prev = ds_prev;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	178 poa.after_branch_point = after_branch_point;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	179 poa.pio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	180 VERIFY0(bpobj_iterate(&ds_next->ds_deadlist.dl_bpobj,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	181 process_old_cb, &poa, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	182 VERIFY0(zio_wait(poa.pio));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	183 ASSERT3U(poa.used, ==, ds->ds_phys->ds_unique_bytes);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	184
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	185 /* change snapused */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	186 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	187 -poa.used, -poa.comp, -poa.uncomp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	188
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	189 /* swap next's deadlist to our deadlist */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	190 dsl_deadlist_close(&ds->ds_deadlist);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	191 dsl_deadlist_close(&ds_next->ds_deadlist);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	192 deadlist_obj = ds->ds_phys->ds_deadlist_obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	193 ds->ds_phys->ds_deadlist_obj = ds_next->ds_phys->ds_deadlist_obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	194 ds_next->ds_phys->ds_deadlist_obj = deadlist_obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	195 dsl_deadlist_open(&ds->ds_deadlist, mos, ds->ds_phys->ds_deadlist_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	196 dsl_deadlist_open(&ds_next->ds_deadlist, mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	197 ds_next->ds_phys->ds_deadlist_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	198 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	199
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	200 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	201 dsl_dataset_remove_clones_key(dsl_dataset_t ds, uint64_t mintxg, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	202 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	203 objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	204 zap_cursor_t zc;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	205 zap_attribute_t za;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	206
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	207 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	208 * If it is the old version, dd_clones doesn't exist so we can't
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	209 * find the clones, but dsl_deadlist_remove_key() is a no-op so it
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	210 * doesn't matter.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	211 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	212 if (ds->ds_dir->dd_phys->dd_clones == 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	213 return;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	214
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	215 for (zap_cursor_init(&zc, mos, ds->ds_dir->dd_phys->dd_clones);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	216 zap_cursor_retrieve(&zc, &za) == 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	217 zap_cursor_advance(&zc)) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	218 dsl_dataset_t *clone;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	219
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	220 VERIFY0(dsl_dataset_hold_obj(ds->ds_dir->dd_pool,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	221 za.za_first_integer, FTAG, &clone));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	222 if (clone->ds_dir->dd_origin_txg > mintxg) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	223 dsl_deadlist_remove_key(&clone->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	224 mintxg, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	225 dsl_dataset_remove_clones_key(clone, mintxg, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	226 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	227 dsl_dataset_rele(clone, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	228 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	229 zap_cursor_fini(&zc);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	230 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	231
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	232 void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	233 dsl_destroy_snapshot_sync_impl(dsl_dataset_t ds, boolean_t defer, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	234 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	235 int err;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	236 int after_branch_point = FALSE;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	237 dsl_pool_t *dp = ds->ds_dir->dd_pool;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	238 objset_t *mos = dp->dp_meta_objset;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	239 dsl_dataset_t *ds_prev = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	240 uint64_t obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	241
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	242 ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	243 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	244 ASSERT(refcount_is_zero(&ds->ds_longholds));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	245
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	246 if (defer &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	247 (ds->ds_userrefs > 0 \|\| ds->ds_phys->ds_num_children > 1)) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	248 ASSERT(spa_version(dp->dp_spa) >= SPA_VERSION_USERREFS);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	249 dmu_buf_will_dirty(ds->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	250 ds->ds_phys->ds_flags \|= DS_FLAG_DEFER_DESTROY;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	251 spa_history_log_internal_ds(ds, "defer_destroy", tx, "");
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	252 return;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	253 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	254
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	255 ASSERT3U(ds->ds_phys->ds_num_children, <=, 1);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	256
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	257 /* We need to log before removing it from the namespace. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	258 spa_history_log_internal_ds(ds, "destroy", tx, "");
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	259
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	260 dsl_scan_ds_destroyed(ds, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	261
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	262 obj = ds->ds_object;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	263
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	264 if (ds->ds_phys->ds_prev_snap_obj != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	265 ASSERT3P(ds->ds_prev, ==, NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	266 VERIFY0(dsl_dataset_hold_obj(dp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	267 ds->ds_phys->ds_prev_snap_obj, FTAG, &ds_prev));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	268 after_branch_point =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	269 (ds_prev->ds_phys->ds_next_snap_obj != obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	270
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	271 dmu_buf_will_dirty(ds_prev->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	272 if (after_branch_point &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	273 ds_prev->ds_phys->ds_next_clones_obj != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	274 dsl_dataset_remove_from_next_clones(ds_prev, obj, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	275 if (ds->ds_phys->ds_next_snap_obj != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	276 VERIFY0(zap_add_int(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	277 ds_prev->ds_phys->ds_next_clones_obj,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	278 ds->ds_phys->ds_next_snap_obj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	279 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	280 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	281 if (!after_branch_point) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	282 ds_prev->ds_phys->ds_next_snap_obj =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	283 ds->ds_phys->ds_next_snap_obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	284 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	285 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	286
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	287 dsl_dataset_t *ds_next;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	288 uint64_t old_unique;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	289 uint64_t used = 0, comp = 0, uncomp = 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	290
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	291 VERIFY0(dsl_dataset_hold_obj(dp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	292 ds->ds_phys->ds_next_snap_obj, FTAG, &ds_next));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	293 ASSERT3U(ds_next->ds_phys->ds_prev_snap_obj, ==, obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	294
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	295 old_unique = ds_next->ds_phys->ds_unique_bytes;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	296
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	297 dmu_buf_will_dirty(ds_next->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	298 ds_next->ds_phys->ds_prev_snap_obj =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	299 ds->ds_phys->ds_prev_snap_obj;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	300 ds_next->ds_phys->ds_prev_snap_txg =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	301 ds->ds_phys->ds_prev_snap_txg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	302 ASSERT3U(ds->ds_phys->ds_prev_snap_txg, ==,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	303 ds_prev ? ds_prev->ds_phys->ds_creation_txg : 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	304
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	305 if (ds_next->ds_deadlist.dl_oldfmt) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	306 process_old_deadlist(ds, ds_prev, ds_next,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	307 after_branch_point, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	308 } else {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	309 /* Adjust prev's unique space. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	310 if (ds_prev && !after_branch_point) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	311 dsl_deadlist_space_range(&ds_next->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	312 ds_prev->ds_phys->ds_prev_snap_txg,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	313 ds->ds_phys->ds_prev_snap_txg,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	314 &used, &comp, &uncomp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	315 ds_prev->ds_phys->ds_unique_bytes += used;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	316 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	317
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	318 /* Adjust snapused. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	319 dsl_deadlist_space_range(&ds_next->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	320 ds->ds_phys->ds_prev_snap_txg, UINT64_MAX,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	321 &used, &comp, &uncomp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	322 dsl_dir_diduse_space(ds->ds_dir, DD_USED_SNAP,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	323 -used, -comp, -uncomp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	324
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	325 /* Move blocks to be freed to pool's free list. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	326 dsl_deadlist_move_bpobj(&ds_next->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	327 &dp->dp_free_bpobj, ds->ds_phys->ds_prev_snap_txg,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	328 tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	329 dsl_dir_diduse_space(tx->tx_pool->dp_free_dir,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	330 DD_USED_HEAD, used, comp, uncomp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	331
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	332 /* Merge our deadlist into next's and free it. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	333 dsl_deadlist_merge(&ds_next->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	334 ds->ds_phys->ds_deadlist_obj, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	335 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	336 dsl_deadlist_close(&ds->ds_deadlist);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	337 dsl_deadlist_free(mos, ds->ds_phys->ds_deadlist_obj, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	338 dmu_buf_will_dirty(ds->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	339 ds->ds_phys->ds_deadlist_obj = 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	340
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	341 /* Collapse range in clone heads */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	342 dsl_dataset_remove_clones_key(ds,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	343 ds->ds_phys->ds_creation_txg, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	344
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	345 if (dsl_dataset_is_snapshot(ds_next)) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	346 dsl_dataset_t *ds_nextnext;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	347
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	348 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	349 * Update next's unique to include blocks which
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	350 * were previously shared by only this snapshot
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	351 * and it. Those blocks will be born after the
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	352 * prev snap and before this snap, and will have
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	353 * died after the next snap and before the one
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	354 * after that (ie. be on the snap after next's
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	355 * deadlist).
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	356 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	357 VERIFY0(dsl_dataset_hold_obj(dp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	358 ds_next->ds_phys->ds_next_snap_obj, FTAG, &ds_nextnext));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	359 dsl_deadlist_space_range(&ds_nextnext->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	360 ds->ds_phys->ds_prev_snap_txg,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	361 ds->ds_phys->ds_creation_txg,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	362 &used, &comp, &uncomp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	363 ds_next->ds_phys->ds_unique_bytes += used;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	364 dsl_dataset_rele(ds_nextnext, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	365 ASSERT3P(ds_next->ds_prev, ==, NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	366
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	367 /* Collapse range in this head. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	368 dsl_dataset_t *hds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	369 VERIFY0(dsl_dataset_hold_obj(dp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	370 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &hds));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	371 dsl_deadlist_remove_key(&hds->ds_deadlist,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	372 ds->ds_phys->ds_creation_txg, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	373 dsl_dataset_rele(hds, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	374
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	375 } else {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	376 ASSERT3P(ds_next->ds_prev, ==, ds);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	377 dsl_dataset_rele(ds_next->ds_prev, ds_next);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	378 ds_next->ds_prev = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	379 if (ds_prev) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	380 VERIFY0(dsl_dataset_hold_obj(dp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	381 ds->ds_phys->ds_prev_snap_obj,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	382 ds_next, &ds_next->ds_prev));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	383 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	384
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	385 dsl_dataset_recalc_head_uniq(ds_next);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	386
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	387 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	388 * Reduce the amount of our unconsumed refreservation
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	389 * being charged to our parent by the amount of
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	390 * new unique data we have gained.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	391 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	392 if (old_unique < ds_next->ds_reserved) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	393 int64_t mrsdelta;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	394 uint64_t new_unique =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	395 ds_next->ds_phys->ds_unique_bytes;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	396
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	397 ASSERT(old_unique <= new_unique);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	398 mrsdelta = MIN(new_unique - old_unique,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	399 ds_next->ds_reserved - old_unique);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	400 dsl_dir_diduse_space(ds->ds_dir,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	401 DD_USED_REFRSRV, -mrsdelta, 0, 0, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	402 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	403 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	404 dsl_dataset_rele(ds_next, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	405
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	406 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	407 * This must be done after the dsl_traverse(), because it will
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	408 * re-open the objset.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	409 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	410 if (ds->ds_objset) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	411 dmu_objset_evict(ds->ds_objset);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	412 ds->ds_objset = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	413 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	414
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	415 /* remove from snapshot namespace */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	416 dsl_dataset_t *ds_head;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	417 ASSERT(ds->ds_phys->ds_snapnames_zapobj == 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	418 VERIFY0(dsl_dataset_hold_obj(dp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	419 ds->ds_dir->dd_phys->dd_head_dataset_obj, FTAG, &ds_head));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	420 VERIFY0(dsl_dataset_get_snapname(ds));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	421 #ifdef ZFS_DEBUG
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	422 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	423 uint64_t val;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	424
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	425 err = dsl_dataset_snap_lookup(ds_head,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	426 ds->ds_snapname, &val);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	427 ASSERT0(err);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	428 ASSERT3U(val, ==, obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	429 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	430 #endif
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	431 VERIFY0(dsl_dataset_snap_remove(ds_head, ds->ds_snapname, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	432 dsl_dataset_rele(ds_head, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	433
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	434 if (ds_prev != NULL)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	435 dsl_dataset_rele(ds_prev, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	436
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	437 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	438
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	439 if (ds->ds_phys->ds_next_clones_obj != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	440 uint64_t count;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	441 ASSERT0(zap_count(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	442 ds->ds_phys->ds_next_clones_obj, &count) && count == 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	443 VERIFY0(dmu_object_free(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	444 ds->ds_phys->ds_next_clones_obj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	445 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	446 if (ds->ds_phys->ds_props_obj != 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	447 VERIFY0(zap_destroy(mos, ds->ds_phys->ds_props_obj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	448 if (ds->ds_phys->ds_userrefs_obj != 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	449 VERIFY0(zap_destroy(mos, ds->ds_phys->ds_userrefs_obj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	450 dsl_dir_rele(ds->ds_dir, ds);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	451 ds->ds_dir = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	452 VERIFY0(dmu_object_free(mos, obj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	453 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	454
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	455 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	456 dsl_destroy_snapshot_sync(void arg, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	457 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	458 dmu_snapshots_destroy_arg_t *dsda = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	459 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	460 nvpair_t *pair;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	461
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	462 for (pair = nvlist_next_nvpair(dsda->dsda_successful_snaps, NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	463 pair != NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	464 pair = nvlist_next_nvpair(dsda->dsda_successful_snaps, pair)) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	465 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	466
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	467 VERIFY0(dsl_dataset_hold(dp, nvpair_name(pair), FTAG, &ds));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	468
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	469 dsl_destroy_snapshot_sync_impl(ds, dsda->dsda_defer, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	470 dsl_dataset_rele(ds, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	471 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	472 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	473
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	474 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	475 * The semantics of this function are described in the comment above
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	476 * lzc_destroy_snaps(). To summarize:
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	477 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	478 * The snapshots must all be in the same pool.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	479 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	480 * Snapshots that don't exist will be silently ignored (considered to be
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	481 * "already deleted").
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	482 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	483 * On success, all snaps will be destroyed and this will return 0.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	484 * On failure, no snaps will be destroyed, the errlist will be filled in,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	485 * and this will return an errno.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	486 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	487 int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	488 dsl_destroy_snapshots_nvl(nvlist_t *snaps, boolean_t defer,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	489 nvlist_t *errlist)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	490 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	491 dmu_snapshots_destroy_arg_t dsda;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	492 int error;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	493 nvpair_t *pair;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	494
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	495 pair = nvlist_next_nvpair(snaps, NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	496 if (pair == NULL)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	497 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	498
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	499 dsda.dsda_snaps = snaps;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	500 dsda.dsda_successful_snaps = fnvlist_alloc();
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	501 dsda.dsda_defer = defer;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	502 dsda.dsda_errlist = errlist;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	503
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	504 error = dsl_sync_task(nvpair_name(pair),
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	505 dsl_destroy_snapshot_check, dsl_destroy_snapshot_sync,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	506 &dsda, 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	507 fnvlist_free(dsda.dsda_successful_snaps);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	508
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	509 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	510 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	511
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	512 int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	513 dsl_destroy_snapshot(const char *name, boolean_t defer)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	514 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	515 int error;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	516 nvlist_t *nvl = fnvlist_alloc();
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	517 nvlist_t *errlist = fnvlist_alloc();
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	518
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	519 fnvlist_add_boolean(nvl, name);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	520 error = dsl_destroy_snapshots_nvl(nvl, defer, errlist);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	521 fnvlist_free(errlist);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	522 fnvlist_free(nvl);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	523 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	524 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	525
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	526 struct killarg {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	527 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	528 dmu_tx_t *tx;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	529 };
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	530
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	531 /* ARGSUSED */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	532 static int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	533 kill_blkptr(spa_t spa, zilog_t zilog, const blkptr_t *bp,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	534 const zbookmark_t zb, const dnode_phys_t dnp, void *arg)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	535 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	536 struct killarg *ka = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	537 dmu_tx_t *tx = ka->tx;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	538
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	539 if (bp == NULL)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	540 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	541
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	542 if (zb->zb_level == ZB_ZIL_LEVEL) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	543 ASSERT(zilog != NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	544 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	545 * It's a block in the intent log. It has no
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	546 * accounting, so just free it.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	547 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	548 dsl_free(ka->tx->tx_pool, ka->tx->tx_txg, bp);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	549 } else {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	550 ASSERT(zilog == NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	551 ASSERT3U(bp->blk_birth, >, ka->ds->ds_phys->ds_prev_snap_txg);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	552 (void) dsl_dataset_block_kill(ka->ds, bp, tx, B_FALSE);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	553 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	554
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	555 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	556 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	557
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	558 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	559 old_synchronous_dataset_destroy(dsl_dataset_t ds, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	560 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	561 struct killarg ka;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	562
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	563 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	564 * Free everything that we point to (that's born after
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	565 * the previous snapshot, if we are a clone)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	566 *
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	567 * NB: this should be very quick, because we already
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	568 * freed all the objects in open context.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	569 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	570 ka.ds = ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	571 ka.tx = tx;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	572 VERIFY0(traverse_dataset(ds,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	573 ds->ds_phys->ds_prev_snap_txg, TRAVERSE_POST,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	574 kill_blkptr, &ka));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	575 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) \|\| ds->ds_phys->ds_unique_bytes == 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	576 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	577
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	578 typedef struct dsl_destroy_head_arg {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	579 const char *ddha_name;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	580 } dsl_destroy_head_arg_t;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	581
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	582 int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	583 dsl_destroy_head_check_impl(dsl_dataset_t *ds, int expected_holds)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	584 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	585 int error;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	586 uint64_t count;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	587 objset_t *mos;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	588
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	589 if (dsl_dataset_is_snapshot(ds))
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	590 return (SET_ERROR(EINVAL));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	591
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	592 if (refcount_count(&ds->ds_longholds) != expected_holds)
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	593 return (SET_ERROR(EBUSY));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	594
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	595 mos = ds->ds_dir->dd_pool->dp_meta_objset;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	596
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	597 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	598 * Can't delete a head dataset if there are snapshots of it.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	599 * (Except if the only snapshots are from the branch we cloned
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	600 * from.)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	601 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	602 if (ds->ds_prev != NULL &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	603 ds->ds_prev->ds_phys->ds_next_snap_obj == ds->ds_object)
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	604 return (SET_ERROR(EBUSY));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	605
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	606 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	607 * Can't delete if there are children of this fs.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	608 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	609 error = zap_count(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	610 ds->ds_dir->dd_phys->dd_child_dir_zapobj, &count);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	611 if (error != 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	612 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	613 if (count != 0)
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	614 return (SET_ERROR(EEXIST));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	615
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	616 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev) &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	617 ds->ds_prev->ds_phys->ds_num_children == 2 &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	618 ds->ds_prev->ds_userrefs == 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	619 /* We need to remove the origin snapshot as well. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	620 if (!refcount_is_zero(&ds->ds_prev->ds_longholds))
13983 d7059eb1884c 3598 want to dtrace when errors are generated in zfs Matthew Ahrens <mahrens@delphix.com> parents: 13976 diff changeset	621 return (SET_ERROR(EBUSY));
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	622 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	623 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	624 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	625
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	626 static int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	627 dsl_destroy_head_check(void arg, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	628 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	629 dsl_destroy_head_arg_t *ddha = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	630 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	631 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	632 int error;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	633
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	634 error = dsl_dataset_hold(dp, ddha->ddha_name, FTAG, &ds);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	635 if (error != 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	636 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	637
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	638 error = dsl_destroy_head_check_impl(ds, 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	639 dsl_dataset_rele(ds, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	640 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	641 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	642
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	643 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	644 dsl_dir_destroy_sync(uint64_t ddobj, dmu_tx_t *tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	645 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	646 dsl_dir_t *dd;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	647 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	648 objset_t *mos = dp->dp_meta_objset;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	649 dd_used_t t;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	650
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	651 ASSERT(RRW_WRITE_HELD(&dmu_tx_pool(tx)->dp_config_rwlock));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	652
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	653 VERIFY0(dsl_dir_hold_obj(dp, ddobj, NULL, FTAG, &dd));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	654
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	655 ASSERT0(dd->dd_phys->dd_head_dataset_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	656
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	657 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	658 * Remove our reservation. The impl() routine avoids setting the
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	659 * actual property, which would require the (already destroyed) ds.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	660 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	661 dsl_dir_set_reservation_sync_impl(dd, 0, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	662
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	663 ASSERT0(dd->dd_phys->dd_used_bytes);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	664 ASSERT0(dd->dd_phys->dd_reserved);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	665 for (t = 0; t < DD_USED_NUM; t++)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	666 ASSERT0(dd->dd_phys->dd_used_breakdown[t]);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	667
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	668 VERIFY0(zap_destroy(mos, dd->dd_phys->dd_child_dir_zapobj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	669 VERIFY0(zap_destroy(mos, dd->dd_phys->dd_props_zapobj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	670 VERIFY0(dsl_deleg_destroy(mos, dd->dd_phys->dd_deleg_zapobj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	671 VERIFY0(zap_remove(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	672 dd->dd_parent->dd_phys->dd_child_dir_zapobj, dd->dd_myname, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	673
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	674 dsl_dir_rele(dd, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	675 VERIFY0(dmu_object_free(mos, ddobj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	676 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	677
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	678 void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	679 dsl_destroy_head_sync_impl(dsl_dataset_t ds, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	680 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	681 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	682 objset_t *mos = dp->dp_meta_objset;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	683 uint64_t obj, ddobj, prevobj = 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	684 boolean_t rmorigin;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	685
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	686 ASSERT3U(ds->ds_phys->ds_num_children, <=, 1);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	687 ASSERT(ds->ds_prev == NULL \|\|
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	688 ds->ds_prev->ds_phys->ds_next_snap_obj != ds->ds_object);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	689 ASSERT3U(ds->ds_phys->ds_bp.blk_birth, <=, tx->tx_txg);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	690 ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	691
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	692 /* We need to log before removing it from the namespace. */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	693 spa_history_log_internal_ds(ds, "destroy", tx, "");
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	694
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	695 rmorigin = (dsl_dir_is_clone(ds->ds_dir) &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	696 DS_IS_DEFER_DESTROY(ds->ds_prev) &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	697 ds->ds_prev->ds_phys->ds_num_children == 2 &&
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	698 ds->ds_prev->ds_userrefs == 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	699
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	700 /* Remove our reservation */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	701 if (ds->ds_reserved != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	702 dsl_dataset_set_refreservation_sync_impl(ds,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	703 (ZPROP_SRC_NONE \| ZPROP_SRC_LOCAL \| ZPROP_SRC_RECEIVED),
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	704 0, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	705 ASSERT0(ds->ds_reserved);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	706 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	707
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	708 dsl_scan_ds_destroyed(ds, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	709
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	710 obj = ds->ds_object;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	711
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	712 if (ds->ds_phys->ds_prev_snap_obj != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	713 /* This is a clone */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	714 ASSERT(ds->ds_prev != NULL);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	715 ASSERT3U(ds->ds_prev->ds_phys->ds_next_snap_obj, !=, obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	716 ASSERT0(ds->ds_phys->ds_next_snap_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	717
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	718 dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	719 if (ds->ds_prev->ds_phys->ds_next_clones_obj != 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	720 dsl_dataset_remove_from_next_clones(ds->ds_prev,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	721 obj, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	722 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	723
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	724 ASSERT3U(ds->ds_prev->ds_phys->ds_num_children, >, 1);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	725 ds->ds_prev->ds_phys->ds_num_children--;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	726 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	727
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	728 zfeature_info_t *async_destroy =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	729 &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY];
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	730 objset_t *os;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	731
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	732 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	733 * Destroy the deadlist. Unless it's a clone, the
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	734 * deadlist should be empty. (If it's a clone, it's
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	735 * safe to ignore the deadlist contents.)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	736 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	737 dsl_deadlist_close(&ds->ds_deadlist);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	738 dsl_deadlist_free(mos, ds->ds_phys->ds_deadlist_obj, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	739 dmu_buf_will_dirty(ds->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	740 ds->ds_phys->ds_deadlist_obj = 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	741
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	742 VERIFY0(dmu_objset_from_ds(ds, &os));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	743
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	744 if (!spa_feature_is_enabled(dp->dp_spa, async_destroy)) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	745 old_synchronous_dataset_destroy(ds, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	746 } else {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	747 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	748 * Move the bptree into the pool's list of trees to
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	749 * clean up and update space accounting information.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	750 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	751 uint64_t used, comp, uncomp;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	752
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	753 zil_destroy_sync(dmu_objset_zil(os), tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	754
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	755 if (!spa_feature_is_active(dp->dp_spa, async_destroy)) {
14022 624fa8f61951 3642 dsl_scan_active() should not issue I/O to determine if async destroying is active George Wilson <george.wilson@delphix.com> parents: 13983 diff changeset	756 dsl_scan_t *scn = dp->dp_scan;
624fa8f61951 3642 dsl_scan_active() should not issue I/O to determine if async destroying is active George Wilson <george.wilson@delphix.com> parents: 13983 diff changeset	757
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	758 spa_feature_incr(dp->dp_spa, async_destroy, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	759 dp->dp_bptree_obj = bptree_alloc(mos, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	760 VERIFY0(zap_add(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	761 DMU_POOL_DIRECTORY_OBJECT,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	762 DMU_POOL_BPTREE_OBJ, sizeof (uint64_t), 1,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	763 &dp->dp_bptree_obj, tx));
14022 624fa8f61951 3642 dsl_scan_active() should not issue I/O to determine if async destroying is active George Wilson <george.wilson@delphix.com> parents: 13983 diff changeset	764 ASSERT(!scn->scn_async_destroying);
624fa8f61951 3642 dsl_scan_active() should not issue I/O to determine if async destroying is active George Wilson <george.wilson@delphix.com> parents: 13983 diff changeset	765 scn->scn_async_destroying = B_TRUE;
13976 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	766 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	767
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	768 used = ds->ds_dir->dd_phys->dd_used_bytes;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	769 comp = ds->ds_dir->dd_phys->dd_compressed_bytes;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	770 uncomp = ds->ds_dir->dd_phys->dd_uncompressed_bytes;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	771
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	772 ASSERT(!DS_UNIQUE_IS_ACCURATE(ds) \|\|
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	773 ds->ds_phys->ds_unique_bytes == used);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	774
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	775 bptree_add(mos, dp->dp_bptree_obj,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	776 &ds->ds_phys->ds_bp, ds->ds_phys->ds_prev_snap_txg,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	777 used, comp, uncomp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	778 dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	779 -used, -comp, -uncomp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	780 dsl_dir_diduse_space(dp->dp_free_dir, DD_USED_HEAD,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	781 used, comp, uncomp, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	782 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	783
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	784 if (ds->ds_prev != NULL) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	785 if (spa_version(dp->dp_spa) >= SPA_VERSION_DIR_CLONES) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	786 VERIFY0(zap_remove_int(mos,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	787 ds->ds_prev->ds_dir->dd_phys->dd_clones,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	788 ds->ds_object, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	789 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	790 prevobj = ds->ds_prev->ds_object;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	791 dsl_dataset_rele(ds->ds_prev, ds);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	792 ds->ds_prev = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	793 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	794
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	795 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	796 * This must be done after the dsl_traverse(), because it will
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	797 * re-open the objset.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	798 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	799 if (ds->ds_objset) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	800 dmu_objset_evict(ds->ds_objset);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	801 ds->ds_objset = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	802 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	803
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	804 /* Erase the link in the dir */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	805 dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	806 ds->ds_dir->dd_phys->dd_head_dataset_obj = 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	807 ddobj = ds->ds_dir->dd_object;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	808 ASSERT(ds->ds_phys->ds_snapnames_zapobj != 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	809 VERIFY0(zap_destroy(mos, ds->ds_phys->ds_snapnames_zapobj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	810
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	811 spa_prop_clear_bootfs(dp->dp_spa, ds->ds_object, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	812
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	813 ASSERT0(ds->ds_phys->ds_next_clones_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	814 ASSERT0(ds->ds_phys->ds_props_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	815 ASSERT0(ds->ds_phys->ds_userrefs_obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	816 dsl_dir_rele(ds->ds_dir, ds);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	817 ds->ds_dir = NULL;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	818 VERIFY0(dmu_object_free(mos, obj, tx));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	819
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	820 dsl_dir_destroy_sync(ddobj, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	821
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	822 if (rmorigin) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	823 dsl_dataset_t *prev;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	824 VERIFY0(dsl_dataset_hold_obj(dp, prevobj, FTAG, &prev));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	825 dsl_destroy_snapshot_sync_impl(prev, B_FALSE, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	826 dsl_dataset_rele(prev, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	827 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	828 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	829
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	830 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	831 dsl_destroy_head_sync(void arg, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	832 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	833 dsl_destroy_head_arg_t *ddha = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	834 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	835 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	836
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	837 VERIFY0(dsl_dataset_hold(dp, ddha->ddha_name, FTAG, &ds));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	838 dsl_destroy_head_sync_impl(ds, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	839 dsl_dataset_rele(ds, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	840 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	841
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	842 static void
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	843 dsl_destroy_head_begin_sync(void arg, dmu_tx_t tx)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	844 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	845 dsl_destroy_head_arg_t *ddha = arg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	846 dsl_pool_t *dp = dmu_tx_pool(tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	847 dsl_dataset_t *ds;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	848
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	849 VERIFY0(dsl_dataset_hold(dp, ddha->ddha_name, FTAG, &ds));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	850
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	851 /* Mark it as inconsistent on-disk, in case we crash */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	852 dmu_buf_will_dirty(ds->ds_dbuf, tx);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	853 ds->ds_phys->ds_flags \|= DS_FLAG_INCONSISTENT;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	854
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	855 spa_history_log_internal_ds(ds, "destroy begin", tx, "");
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	856 dsl_dataset_rele(ds, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	857 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	858
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	859 int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	860 dsl_destroy_head(const char *name)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	861 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	862 dsl_destroy_head_arg_t ddha;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	863 int error;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	864 spa_t *spa;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	865 boolean_t isenabled;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	866
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	867 #ifdef _KERNEL
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	868 zfs_destroy_unmount_origin(name);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	869 #endif
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	870
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	871 error = spa_open(name, &spa, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	872 if (error != 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	873 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	874 isenabled = spa_feature_is_enabled(spa,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	875 &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY]);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	876 spa_close(spa, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	877
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	878 ddha.ddha_name = name;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	879
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	880 if (!isenabled) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	881 objset_t *os;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	882
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	883 error = dsl_sync_task(name, dsl_destroy_head_check,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	884 dsl_destroy_head_begin_sync, &ddha, 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	885 if (error != 0)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	886 return (error);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	887
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	888 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	889 * Head deletion is processed in one txg on old pools;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	890 * remove the objects from open context so that the txg sync
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	891 * is not too long.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	892 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	893 error = dmu_objset_own(name, DMU_OST_ANY, B_FALSE, FTAG, &os);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	894 if (error == 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	895 uint64_t prev_snap_txg =
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	896 dmu_objset_ds(os)->ds_phys->ds_prev_snap_txg;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	897 for (uint64_t obj = 0; error == 0;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	898 error = dmu_object_next(os, &obj, FALSE,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	899 prev_snap_txg))
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	900 (void) dmu_free_object(os, obj);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	901 /* sync out all frees */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	902 txg_wait_synced(dmu_objset_pool(os), 0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	903 dmu_objset_disown(os, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	904 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	905 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	906
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	907 return (dsl_sync_task(name, dsl_destroy_head_check,
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	908 dsl_destroy_head_sync, &ddha, 0));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	909 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	910
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	911 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	912 * Note, this function is used as the callback for dmu_objset_find(). We
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	913 * always return 0 so that we will continue to find and process
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	914 * inconsistent datasets, even if we encounter an error trying to
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	915 * process one of them.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	916 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	917 /* ARGSUSED */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	918 int
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	919 dsl_destroy_inconsistent(const char dsname, void arg)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	920 {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	921 objset_t *os;
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	922
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	923 if (dmu_objset_hold(dsname, FTAG, &os) == 0) {
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	924 boolean_t inconsistent = DS_IS_INCONSISTENT(dmu_objset_ds(os));
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	925 dmu_objset_rele(os, FTAG);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	926 if (inconsistent)
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	927 (void) dsl_destroy_head(dsname);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	928 }
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	929 return (0);
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: diff changeset	930 }

Mercurial > illumos > wpa

annotate usr/src/uts/common/fs/zfs/dsl_destroy.c @ 14022:624fa8f61951