2007-04-06 01:09:06 +00:00
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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/*
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* This file contains all the routines used when modifying on-disk SPA state.
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* This includes opening, importing, destroying, exporting a pool, and syncing a
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* pool.
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*/
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#include <sys/zfs_context.h>
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#include <sys/fm/fs/zfs.h>
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#include <sys/spa_impl.h>
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#include <sys/zio.h>
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#include <sys/zio_checksum.h>
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#include <sys/zio_compress.h>
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#include <sys/dmu.h>
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#include <sys/dmu_tx.h>
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#include <sys/zap.h>
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#include <sys/zil.h>
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#include <sys/vdev_impl.h>
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#include <sys/metaslab.h>
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#include <sys/uberblock_impl.h>
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#include <sys/txg.h>
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#include <sys/avl.h>
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#include <sys/dmu_traverse.h>
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#include <sys/dmu_objset.h>
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#include <sys/unique.h>
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#include <sys/dsl_pool.h>
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#include <sys/dsl_dataset.h>
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#include <sys/dsl_dir.h>
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#include <sys/dsl_prop.h>
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#include <sys/dsl_synctask.h>
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#include <sys/fs/zfs.h>
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#include <sys/callb.h>
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2007-04-14 12:20:06 +00:00
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int zio_taskq_threads = 0;
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SYSCTL_DECL(_vfs_zfs);
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SYSCTL_NODE(_vfs_zfs, OID_AUTO, zio, CTLFLAG_RW, 0, "ZFS ZIO");
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TUNABLE_INT("vfs.zfs.zio.taskq_threads", &zio_taskq_threads);
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SYSCTL_INT(_vfs_zfs_zio, OID_AUTO, taskq_threads, CTLFLAG_RW,
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&zio_taskq_threads, 0, "Number of ZIO threads per ZIO type");
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2007-04-06 01:09:06 +00:00
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/*
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* ==========================================================================
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* SPA state manipulation (open/create/destroy/import/export)
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* ==========================================================================
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*/
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static int
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spa_error_entry_compare(const void *a, const void *b)
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{
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spa_error_entry_t *sa = (spa_error_entry_t *)a;
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spa_error_entry_t *sb = (spa_error_entry_t *)b;
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int ret;
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ret = bcmp(&sa->se_bookmark, &sb->se_bookmark,
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sizeof (zbookmark_t));
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if (ret < 0)
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return (-1);
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else if (ret > 0)
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return (1);
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else
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return (0);
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}
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/*
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* Utility function which retrieves copies of the current logs and
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* re-initializes them in the process.
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*/
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void
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spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub)
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{
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ASSERT(MUTEX_HELD(&spa->spa_errlist_lock));
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bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t));
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bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t));
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avl_create(&spa->spa_errlist_scrub,
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spa_error_entry_compare, sizeof (spa_error_entry_t),
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offsetof(spa_error_entry_t, se_avl));
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avl_create(&spa->spa_errlist_last,
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spa_error_entry_compare, sizeof (spa_error_entry_t),
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offsetof(spa_error_entry_t, se_avl));
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}
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/*
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* Activate an uninitialized pool.
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*/
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static void
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spa_activate(spa_t *spa)
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{
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int t;
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2007-04-14 12:20:06 +00:00
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int nthreads = zio_taskq_threads;
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char name[32];
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2007-04-06 01:09:06 +00:00
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ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED);
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spa->spa_state = POOL_STATE_ACTIVE;
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spa->spa_normal_class = metaslab_class_create();
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2007-04-14 12:20:06 +00:00
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if (nthreads == 0)
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2007-04-14 12:33:47 +00:00
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nthreads = max_ncpus;
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2007-04-06 01:09:06 +00:00
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for (t = 0; t < ZIO_TYPES; t++) {
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2007-04-14 12:20:06 +00:00
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snprintf(name, sizeof(name), "spa_zio_issue %d", t);
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spa->spa_zio_issue_taskq[t] = taskq_create(name, nthreads,
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maxclsyspri, 50, INT_MAX, TASKQ_PREPOPULATE);
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snprintf(name, sizeof(name), "spa_zio_intr %d", t);
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spa->spa_zio_intr_taskq[t] = taskq_create(name, nthreads,
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maxclsyspri, 50, INT_MAX, TASKQ_PREPOPULATE);
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2007-04-06 01:09:06 +00:00
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}
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rw_init(&spa->spa_traverse_lock, NULL, RW_DEFAULT, NULL);
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mutex_init(&spa->spa_uberblock_lock, NULL, MUTEX_DEFAULT, NULL);
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mutex_init(&spa->spa_errlog_lock, NULL, MUTEX_DEFAULT, NULL);
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mutex_init(&spa->spa_errlist_lock, NULL, MUTEX_DEFAULT, NULL);
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mutex_init(&spa->spa_config_lock.scl_lock, NULL, MUTEX_DEFAULT, NULL);
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cv_init(&spa->spa_config_lock.scl_cv, NULL, CV_DEFAULT, NULL);
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mutex_init(&spa->spa_sync_bplist.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
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mutex_init(&spa->spa_history_lock, NULL, MUTEX_DEFAULT, NULL);
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mutex_init(&spa->spa_props_lock, NULL, MUTEX_DEFAULT, NULL);
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list_create(&spa->spa_dirty_list, sizeof (vdev_t),
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offsetof(vdev_t, vdev_dirty_node));
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txg_list_create(&spa->spa_vdev_txg_list,
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offsetof(struct vdev, vdev_txg_node));
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avl_create(&spa->spa_errlist_scrub,
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spa_error_entry_compare, sizeof (spa_error_entry_t),
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offsetof(spa_error_entry_t, se_avl));
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avl_create(&spa->spa_errlist_last,
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spa_error_entry_compare, sizeof (spa_error_entry_t),
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offsetof(spa_error_entry_t, se_avl));
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}
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/*
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* Opposite of spa_activate().
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*/
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static void
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spa_deactivate(spa_t *spa)
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{
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int t;
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ASSERT(spa->spa_sync_on == B_FALSE);
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ASSERT(spa->spa_dsl_pool == NULL);
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ASSERT(spa->spa_root_vdev == NULL);
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ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED);
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txg_list_destroy(&spa->spa_vdev_txg_list);
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list_destroy(&spa->spa_dirty_list);
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for (t = 0; t < ZIO_TYPES; t++) {
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taskq_destroy(spa->spa_zio_issue_taskq[t]);
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taskq_destroy(spa->spa_zio_intr_taskq[t]);
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spa->spa_zio_issue_taskq[t] = NULL;
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spa->spa_zio_intr_taskq[t] = NULL;
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}
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metaslab_class_destroy(spa->spa_normal_class);
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spa->spa_normal_class = NULL;
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/*
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* If this was part of an import or the open otherwise failed, we may
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* still have errors left in the queues. Empty them just in case.
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*/
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spa_errlog_drain(spa);
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avl_destroy(&spa->spa_errlist_scrub);
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avl_destroy(&spa->spa_errlist_last);
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rw_destroy(&spa->spa_traverse_lock);
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mutex_destroy(&spa->spa_uberblock_lock);
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mutex_destroy(&spa->spa_errlog_lock);
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mutex_destroy(&spa->spa_errlist_lock);
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mutex_destroy(&spa->spa_config_lock.scl_lock);
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cv_destroy(&spa->spa_config_lock.scl_cv);
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mutex_destroy(&spa->spa_sync_bplist.bpl_lock);
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mutex_destroy(&spa->spa_history_lock);
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mutex_destroy(&spa->spa_props_lock);
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spa->spa_state = POOL_STATE_UNINITIALIZED;
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}
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/*
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* Verify a pool configuration, and construct the vdev tree appropriately. This
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* will create all the necessary vdevs in the appropriate layout, with each vdev
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* in the CLOSED state. This will prep the pool before open/creation/import.
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* All vdev validation is done by the vdev_alloc() routine.
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*/
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static int
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spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent,
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uint_t id, int atype)
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{
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nvlist_t **child;
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uint_t c, children;
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int error;
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if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0)
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return (error);
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if ((*vdp)->vdev_ops->vdev_op_leaf)
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return (0);
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if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
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&child, &children) != 0) {
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vdev_free(*vdp);
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*vdp = NULL;
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return (EINVAL);
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}
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for (c = 0; c < children; c++) {
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vdev_t *vd;
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if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c,
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atype)) != 0) {
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vdev_free(*vdp);
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*vdp = NULL;
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return (error);
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}
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}
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ASSERT(*vdp != NULL);
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return (0);
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}
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/*
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* Opposite of spa_load().
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*/
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static void
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spa_unload(spa_t *spa)
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{
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int i;
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/*
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* Stop async tasks.
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*/
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spa_async_suspend(spa);
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/*
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* Stop syncing.
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*/
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if (spa->spa_sync_on) {
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txg_sync_stop(spa->spa_dsl_pool);
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spa->spa_sync_on = B_FALSE;
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}
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/*
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* Wait for any outstanding prefetch I/O to complete.
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*/
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spa_config_enter(spa, RW_WRITER, FTAG);
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spa_config_exit(spa, FTAG);
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/*
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* Close the dsl pool.
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*/
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if (spa->spa_dsl_pool) {
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dsl_pool_close(spa->spa_dsl_pool);
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spa->spa_dsl_pool = NULL;
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}
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/*
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* Close all vdevs.
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*/
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if (spa->spa_root_vdev)
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vdev_free(spa->spa_root_vdev);
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ASSERT(spa->spa_root_vdev == NULL);
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for (i = 0; i < spa->spa_nspares; i++)
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vdev_free(spa->spa_spares[i]);
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if (spa->spa_spares) {
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kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *));
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spa->spa_spares = NULL;
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}
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if (spa->spa_sparelist) {
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nvlist_free(spa->spa_sparelist);
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spa->spa_sparelist = NULL;
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}
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spa->spa_async_suspended = 0;
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}
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/*
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* Load (or re-load) the current list of vdevs describing the active spares for
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* this pool. When this is called, we have some form of basic information in
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* 'spa_sparelist'. We parse this into vdevs, try to open them, and then
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* re-generate a more complete list including status information.
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*/
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static void
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spa_load_spares(spa_t *spa)
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{
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nvlist_t **spares;
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uint_t nspares;
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int i;
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vdev_t *vd, *tvd;
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/*
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* First, close and free any existing spare vdevs.
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*/
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for (i = 0; i < spa->spa_nspares; i++) {
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vd = spa->spa_spares[i];
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/* Undo the call to spa_activate() below */
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if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL &&
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tvd->vdev_isspare)
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spa_spare_remove(tvd);
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vdev_close(vd);
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vdev_free(vd);
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}
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if (spa->spa_spares)
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kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *));
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if (spa->spa_sparelist == NULL)
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|
|
nspares = 0;
|
|
|
|
else
|
|
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
|
|
|
|
|
|
spa->spa_nspares = (int)nspares;
|
|
|
|
spa->spa_spares = NULL;
|
|
|
|
|
|
|
|
if (nspares == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Construct the array of vdevs, opening them to get status in the
|
|
|
|
* process. For each spare, there is potentially two different vdev_t
|
|
|
|
* structures associated with it: one in the list of spares (used only
|
|
|
|
* for basic validation purposes) and one in the active vdev
|
|
|
|
* configuration (if it's spared in). During this phase we open and
|
|
|
|
* validate each vdev on the spare list. If the vdev also exists in the
|
|
|
|
* active configuration, then we also mark this vdev as an active spare.
|
|
|
|
*/
|
|
|
|
spa->spa_spares = kmem_alloc(nspares * sizeof (void *), KM_SLEEP);
|
|
|
|
for (i = 0; i < spa->spa_nspares; i++) {
|
|
|
|
VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0,
|
|
|
|
VDEV_ALLOC_SPARE) == 0);
|
|
|
|
ASSERT(vd != NULL);
|
|
|
|
|
|
|
|
spa->spa_spares[i] = vd;
|
|
|
|
|
|
|
|
if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL) {
|
|
|
|
if (!tvd->vdev_isspare)
|
|
|
|
spa_spare_add(tvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We only mark the spare active if we were successfully
|
|
|
|
* able to load the vdev. Otherwise, importing a pool
|
|
|
|
* with a bad active spare would result in strange
|
|
|
|
* behavior, because multiple pool would think the spare
|
|
|
|
* is actively in use.
|
|
|
|
*
|
|
|
|
* There is a vulnerability here to an equally bizarre
|
|
|
|
* circumstance, where a dead active spare is later
|
|
|
|
* brought back to life (onlined or otherwise). Given
|
|
|
|
* the rarity of this scenario, and the extra complexity
|
|
|
|
* it adds, we ignore the possibility.
|
|
|
|
*/
|
|
|
|
if (!vdev_is_dead(tvd))
|
|
|
|
spa_spare_activate(tvd);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vdev_open(vd) != 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
vd->vdev_top = vd;
|
|
|
|
(void) vdev_validate_spare(vd);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Recompute the stashed list of spares, with status information
|
|
|
|
* this time.
|
|
|
|
*/
|
|
|
|
VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES,
|
|
|
|
DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
|
|
|
|
spares = kmem_alloc(spa->spa_nspares * sizeof (void *), KM_SLEEP);
|
|
|
|
for (i = 0; i < spa->spa_nspares; i++)
|
|
|
|
spares[i] = vdev_config_generate(spa, spa->spa_spares[i],
|
|
|
|
B_TRUE, B_TRUE);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES,
|
|
|
|
spares, spa->spa_nspares) == 0);
|
|
|
|
for (i = 0; i < spa->spa_nspares; i++)
|
|
|
|
nvlist_free(spares[i]);
|
|
|
|
kmem_free(spares, spa->spa_nspares * sizeof (void *));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value)
|
|
|
|
{
|
|
|
|
dmu_buf_t *db;
|
|
|
|
char *packed = NULL;
|
|
|
|
size_t nvsize = 0;
|
|
|
|
int error;
|
|
|
|
*value = NULL;
|
|
|
|
|
|
|
|
VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db));
|
|
|
|
nvsize = *(uint64_t *)db->db_data;
|
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
|
|
|
|
packed = kmem_alloc(nvsize, KM_SLEEP);
|
|
|
|
error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed);
|
|
|
|
if (error == 0)
|
|
|
|
error = nvlist_unpack(packed, nvsize, value, 0);
|
|
|
|
kmem_free(packed, nvsize);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load an existing storage pool, using the pool's builtin spa_config as a
|
|
|
|
* source of configuration information.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig)
|
|
|
|
{
|
|
|
|
int error = 0;
|
|
|
|
nvlist_t *nvroot = NULL;
|
|
|
|
vdev_t *rvd;
|
|
|
|
uberblock_t *ub = &spa->spa_uberblock;
|
|
|
|
uint64_t config_cache_txg = spa->spa_config_txg;
|
|
|
|
uint64_t pool_guid;
|
|
|
|
uint64_t version;
|
|
|
|
zio_t *zio;
|
|
|
|
|
|
|
|
spa->spa_load_state = state;
|
|
|
|
|
|
|
|
if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) ||
|
|
|
|
nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) {
|
|
|
|
error = EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Versioning wasn't explicitly added to the label until later, so if
|
|
|
|
* it's not present treat it as the initial version.
|
|
|
|
*/
|
|
|
|
if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0)
|
|
|
|
version = ZFS_VERSION_INITIAL;
|
|
|
|
|
|
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG,
|
|
|
|
&spa->spa_config_txg);
|
|
|
|
|
|
|
|
if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) &&
|
|
|
|
spa_guid_exists(pool_guid, 0)) {
|
|
|
|
error = EEXIST;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
spa->spa_load_guid = pool_guid;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Parse the configuration into a vdev tree. We explicitly set the
|
|
|
|
* value that will be returned by spa_version() since parsing the
|
|
|
|
* configuration requires knowing the version number.
|
|
|
|
*/
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
spa->spa_ubsync.ub_version = version;
|
|
|
|
error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
if (error != 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
ASSERT(spa->spa_root_vdev == rvd);
|
|
|
|
ASSERT(spa_guid(spa) == pool_guid);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Try to open all vdevs, loading each label in the process.
|
|
|
|
*/
|
|
|
|
if (vdev_open(rvd) != 0) {
|
|
|
|
error = ENXIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Validate the labels for all leaf vdevs. We need to grab the config
|
|
|
|
* lock because all label I/O is done with the ZIO_FLAG_CONFIG_HELD
|
|
|
|
* flag.
|
|
|
|
*/
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
error = vdev_validate(rvd);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
if (error != 0) {
|
|
|
|
error = EBADF;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) {
|
|
|
|
error = ENXIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find the best uberblock.
|
|
|
|
*/
|
|
|
|
bzero(ub, sizeof (uberblock_t));
|
|
|
|
|
|
|
|
zio = zio_root(spa, NULL, NULL,
|
|
|
|
ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE);
|
|
|
|
vdev_uberblock_load(zio, rvd, ub);
|
|
|
|
error = zio_wait(zio);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we weren't able to find a single valid uberblock, return failure.
|
|
|
|
*/
|
|
|
|
if (ub->ub_txg == 0) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = ENXIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the pool is newer than the code, we can't open it.
|
|
|
|
*/
|
|
|
|
if (ub->ub_version > ZFS_VERSION) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_VERSION_NEWER);
|
|
|
|
error = ENOTSUP;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the vdev guid sum doesn't match the uberblock, we have an
|
|
|
|
* incomplete configuration.
|
|
|
|
*/
|
|
|
|
if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_BAD_GUID_SUM);
|
|
|
|
error = ENXIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize internal SPA structures.
|
|
|
|
*/
|
|
|
|
spa->spa_state = POOL_STATE_ACTIVE;
|
|
|
|
spa->spa_ubsync = spa->spa_uberblock;
|
|
|
|
spa->spa_first_txg = spa_last_synced_txg(spa) + 1;
|
|
|
|
error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool);
|
|
|
|
if (error) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset;
|
|
|
|
|
|
|
|
if (zap_lookup(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_config_object) != 0) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!mosconfig) {
|
|
|
|
nvlist_t *newconfig;
|
2007-04-08 16:29:25 +00:00
|
|
|
uint64_t hostid;
|
2007-04-06 01:09:06 +00:00
|
|
|
|
|
|
|
if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2007-04-17 17:57:34 +00:00
|
|
|
/*
|
|
|
|
* hostid is set after the root file system is mounted, so
|
|
|
|
* ignore the check until it's done.
|
|
|
|
*/
|
2007-04-08 16:29:25 +00:00
|
|
|
if (nvlist_lookup_uint64(newconfig, ZPOOL_CONFIG_HOSTID,
|
2007-04-17 17:57:34 +00:00
|
|
|
&hostid) == 0 && root_mounted()) {
|
2007-04-08 16:29:25 +00:00
|
|
|
char *hostname;
|
|
|
|
unsigned long myhostid = 0;
|
|
|
|
|
|
|
|
VERIFY(nvlist_lookup_string(newconfig,
|
|
|
|
ZPOOL_CONFIG_HOSTNAME, &hostname) == 0);
|
|
|
|
|
|
|
|
(void) ddi_strtoul(hw_serial, NULL, 10, &myhostid);
|
|
|
|
if ((unsigned long)hostid != myhostid) {
|
|
|
|
cmn_err(CE_WARN, "pool '%s' could not be "
|
|
|
|
"loaded as it was last accessed by "
|
|
|
|
"another system (host: %s hostid: 0x%lx). "
|
|
|
|
"See: http://www.sun.com/msg/ZFS-8000-EY",
|
|
|
|
spa->spa_name, hostname,
|
|
|
|
(unsigned long)hostid);
|
|
|
|
error = EBADF;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-04-06 01:09:06 +00:00
|
|
|
spa_config_set(spa, newconfig);
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
spa_activate(spa);
|
|
|
|
|
|
|
|
return (spa_load(spa, newconfig, state, B_TRUE));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (zap_lookup(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load the bit that tells us to use the new accounting function
|
|
|
|
* (raid-z deflation). If we have an older pool, this will not
|
|
|
|
* be present.
|
|
|
|
*/
|
|
|
|
error = zap_lookup(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_deflate);
|
|
|
|
if (error != 0 && error != ENOENT) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load the persistent error log. If we have an older pool, this will
|
|
|
|
* not be present.
|
|
|
|
*/
|
|
|
|
error = zap_lookup(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_errlog_last);
|
|
|
|
if (error != 0 && error != ENOENT) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = zap_lookup(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_errlog_scrub);
|
|
|
|
if (error != 0 && error != ENOENT) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load the history object. If we have an older pool, this
|
|
|
|
* will not be present.
|
|
|
|
*/
|
|
|
|
error = zap_lookup(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_history);
|
|
|
|
if (error != 0 && error != ENOENT) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load any hot spares for this pool.
|
|
|
|
*/
|
|
|
|
error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
|
|
DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares_object);
|
|
|
|
if (error != 0 && error != ENOENT) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
if (error == 0) {
|
|
|
|
ASSERT(spa_version(spa) >= ZFS_VERSION_SPARES);
|
|
|
|
if (load_nvlist(spa, spa->spa_spares_object,
|
|
|
|
&spa->spa_sparelist) != 0) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
spa_load_spares(spa);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
|
|
DMU_POOL_PROPS, sizeof (uint64_t), 1, &spa->spa_pool_props_object);
|
|
|
|
|
|
|
|
if (error && error != ENOENT) {
|
|
|
|
vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
|
|
error = EIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (error == 0) {
|
|
|
|
(void) zap_lookup(spa->spa_meta_objset,
|
|
|
|
spa->spa_pool_props_object,
|
|
|
|
zpool_prop_to_name(ZFS_PROP_BOOTFS),
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_bootfs);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Load the vdev state for all toplevel vdevs.
|
|
|
|
*/
|
|
|
|
vdev_load(rvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Propagate the leaf DTLs we just loaded all the way up the tree.
|
|
|
|
*/
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
vdev_dtl_reassess(rvd, 0, 0, B_FALSE);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check the state of the root vdev. If it can't be opened, it
|
|
|
|
* indicates one or more toplevel vdevs are faulted.
|
|
|
|
*/
|
|
|
|
if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) {
|
|
|
|
error = ENXIO;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((spa_mode & FWRITE) && state != SPA_LOAD_TRYIMPORT) {
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
int need_update = B_FALSE;
|
|
|
|
int c;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Claim log blocks that haven't been committed yet.
|
|
|
|
* This must all happen in a single txg.
|
|
|
|
*/
|
|
|
|
tx = dmu_tx_create_assigned(spa_get_dsl(spa),
|
|
|
|
spa_first_txg(spa));
|
|
|
|
(void) dmu_objset_find(spa->spa_name,
|
|
|
|
zil_claim, tx, DS_FIND_CHILDREN);
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
|
|
|
|
spa->spa_sync_on = B_TRUE;
|
|
|
|
txg_sync_start(spa->spa_dsl_pool);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Wait for all claims to sync.
|
|
|
|
*/
|
|
|
|
txg_wait_synced(spa->spa_dsl_pool, 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the config cache is stale, or we have uninitialized
|
|
|
|
* metaslabs (see spa_vdev_add()), then update the config.
|
|
|
|
*/
|
|
|
|
if (config_cache_txg != spa->spa_config_txg ||
|
|
|
|
state == SPA_LOAD_IMPORT)
|
|
|
|
need_update = B_TRUE;
|
|
|
|
|
|
|
|
for (c = 0; c < rvd->vdev_children; c++)
|
|
|
|
if (rvd->vdev_child[c]->vdev_ms_array == 0)
|
|
|
|
need_update = B_TRUE;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update the config cache asychronously in case we're the
|
|
|
|
* root pool, in which case the config cache isn't writable yet.
|
|
|
|
*/
|
|
|
|
if (need_update)
|
|
|
|
spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
|
|
|
|
}
|
|
|
|
|
|
|
|
error = 0;
|
|
|
|
out:
|
|
|
|
if (error && error != EBADF)
|
|
|
|
zfs_ereport_post(FM_EREPORT_ZFS_POOL, spa, NULL, NULL, 0, 0);
|
|
|
|
spa->spa_load_state = SPA_LOAD_NONE;
|
|
|
|
spa->spa_ena = 0;
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pool Open/Import
|
|
|
|
*
|
|
|
|
* The import case is identical to an open except that the configuration is sent
|
|
|
|
* down from userland, instead of grabbed from the configuration cache. For the
|
|
|
|
* case of an open, the pool configuration will exist in the
|
|
|
|
* POOL_STATE_UNITIALIZED state.
|
|
|
|
*
|
|
|
|
* The stats information (gen/count/ustats) is used to gather vdev statistics at
|
|
|
|
* the same time open the pool, without having to keep around the spa_t in some
|
|
|
|
* ambiguous state.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config)
|
|
|
|
{
|
|
|
|
spa_t *spa;
|
|
|
|
int error;
|
|
|
|
int loaded = B_FALSE;
|
|
|
|
int locked = B_FALSE;
|
|
|
|
|
|
|
|
*spapp = NULL;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* As disgusting as this is, we need to support recursive calls to this
|
|
|
|
* function because dsl_dir_open() is called during spa_load(), and ends
|
|
|
|
* up calling spa_open() again. The real fix is to figure out how to
|
|
|
|
* avoid dsl_dir_open() calling this in the first place.
|
|
|
|
*/
|
|
|
|
if (mutex_owner(&spa_namespace_lock) != curthread) {
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
locked = B_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((spa = spa_lookup(pool)) == NULL) {
|
|
|
|
if (locked)
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (ENOENT);
|
|
|
|
}
|
|
|
|
if (spa->spa_state == POOL_STATE_UNINITIALIZED) {
|
|
|
|
|
|
|
|
spa_activate(spa);
|
|
|
|
|
|
|
|
error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE);
|
|
|
|
|
|
|
|
if (error == EBADF) {
|
|
|
|
/*
|
|
|
|
* If vdev_validate() returns failure (indicated by
|
|
|
|
* EBADF), it indicates that one of the vdevs indicates
|
|
|
|
* that the pool has been exported or destroyed. If
|
|
|
|
* this is the case, the config cache is out of sync and
|
|
|
|
* we should remove the pool from the namespace.
|
|
|
|
*/
|
|
|
|
zfs_post_ok(spa, NULL);
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
spa_remove(spa);
|
|
|
|
spa_config_sync();
|
|
|
|
if (locked)
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (ENOENT);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (error) {
|
|
|
|
/*
|
|
|
|
* We can't open the pool, but we still have useful
|
|
|
|
* information: the state of each vdev after the
|
|
|
|
* attempted vdev_open(). Return this to the user.
|
|
|
|
*/
|
|
|
|
if (config != NULL && spa->spa_root_vdev != NULL) {
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
*config = spa_config_generate(spa, NULL, -1ULL,
|
|
|
|
B_TRUE);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
}
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
spa->spa_last_open_failed = B_TRUE;
|
|
|
|
if (locked)
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
*spapp = NULL;
|
|
|
|
return (error);
|
|
|
|
} else {
|
|
|
|
zfs_post_ok(spa, NULL);
|
|
|
|
spa->spa_last_open_failed = B_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
loaded = B_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_open_ref(spa, tag);
|
|
|
|
if (locked)
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
*spapp = spa;
|
|
|
|
|
|
|
|
if (config != NULL) {
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
*config = spa_config_generate(spa, NULL, -1ULL, B_TRUE);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we just loaded the pool, resilver anything that's out of date.
|
|
|
|
*/
|
|
|
|
if (loaded && (spa_mode & FWRITE))
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
spa_open(const char *name, spa_t **spapp, void *tag)
|
|
|
|
{
|
|
|
|
return (spa_open_common(name, spapp, tag, NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Lookup the given spa_t, incrementing the inject count in the process,
|
|
|
|
* preventing it from being exported or destroyed.
|
|
|
|
*/
|
|
|
|
spa_t *
|
|
|
|
spa_inject_addref(char *name)
|
|
|
|
{
|
|
|
|
spa_t *spa;
|
|
|
|
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
if ((spa = spa_lookup(name)) == NULL) {
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
spa->spa_inject_ref++;
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
return (spa);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_inject_delref(spa_t *spa)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa->spa_inject_ref--;
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_add_spares(spa_t *spa, nvlist_t *config)
|
|
|
|
{
|
|
|
|
nvlist_t **spares;
|
|
|
|
uint_t i, nspares;
|
|
|
|
nvlist_t *nvroot;
|
|
|
|
uint64_t guid;
|
|
|
|
vdev_stat_t *vs;
|
|
|
|
uint_t vsc;
|
|
|
|
uint64_t pool;
|
|
|
|
|
|
|
|
if (spa->spa_nspares == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
VERIFY(nvlist_lookup_nvlist(config,
|
|
|
|
ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
|
|
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
|
|
if (nspares != 0) {
|
|
|
|
VERIFY(nvlist_add_nvlist_array(nvroot,
|
|
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
|
|
VERIFY(nvlist_lookup_nvlist_array(nvroot,
|
|
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Go through and find any spares which have since been
|
|
|
|
* repurposed as an active spare. If this is the case, update
|
|
|
|
* their status appropriately.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < nspares; i++) {
|
|
|
|
VERIFY(nvlist_lookup_uint64(spares[i],
|
|
|
|
ZPOOL_CONFIG_GUID, &guid) == 0);
|
|
|
|
if (spa_spare_exists(guid, &pool) && pool != 0ULL) {
|
|
|
|
VERIFY(nvlist_lookup_uint64_array(
|
|
|
|
spares[i], ZPOOL_CONFIG_STATS,
|
|
|
|
(uint64_t **)&vs, &vsc) == 0);
|
|
|
|
vs->vs_state = VDEV_STATE_CANT_OPEN;
|
|
|
|
vs->vs_aux = VDEV_AUX_SPARED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
spa_t *spa;
|
|
|
|
|
|
|
|
*config = NULL;
|
|
|
|
error = spa_open_common(name, &spa, FTAG, config);
|
|
|
|
|
|
|
|
if (spa && *config != NULL) {
|
|
|
|
VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT,
|
|
|
|
spa_get_errlog_size(spa)) == 0);
|
|
|
|
|
|
|
|
spa_add_spares(spa, *config);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We want to get the alternate root even for faulted pools, so we cheat
|
|
|
|
* and call spa_lookup() directly.
|
|
|
|
*/
|
|
|
|
if (altroot) {
|
|
|
|
if (spa == NULL) {
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa = spa_lookup(name);
|
|
|
|
if (spa)
|
|
|
|
spa_altroot(spa, altroot, buflen);
|
|
|
|
else
|
|
|
|
altroot[0] = '\0';
|
|
|
|
spa = NULL;
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
} else {
|
|
|
|
spa_altroot(spa, altroot, buflen);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (spa != NULL)
|
|
|
|
spa_close(spa, FTAG);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Validate that the 'spares' array is well formed. We must have an array of
|
|
|
|
* nvlists, each which describes a valid leaf vdev. If this is an import (mode
|
|
|
|
* is VDEV_ALLOC_SPARE), then we allow corrupted spares to be specified, as long
|
|
|
|
* as they are well-formed.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
spa_validate_spares(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode)
|
|
|
|
{
|
|
|
|
nvlist_t **spares;
|
|
|
|
uint_t i, nspares;
|
|
|
|
vdev_t *vd;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* It's acceptable to have no spares specified.
|
|
|
|
*/
|
|
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
|
|
&spares, &nspares) != 0)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
if (nspares == 0)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make sure the pool is formatted with a version that supports hot
|
|
|
|
* spares.
|
|
|
|
*/
|
|
|
|
if (spa_version(spa) < ZFS_VERSION_SPARES)
|
|
|
|
return (ENOTSUP);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the pending spare list so we correctly handle device in-use
|
|
|
|
* checking.
|
|
|
|
*/
|
|
|
|
spa->spa_pending_spares = spares;
|
|
|
|
spa->spa_pending_nspares = nspares;
|
|
|
|
|
|
|
|
for (i = 0; i < nspares; i++) {
|
|
|
|
if ((error = spa_config_parse(spa, &vd, spares[i], NULL, 0,
|
|
|
|
mode)) != 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf) {
|
|
|
|
vdev_free(vd);
|
|
|
|
error = EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
vd->vdev_top = vd;
|
|
|
|
|
|
|
|
if ((error = vdev_open(vd)) == 0 &&
|
|
|
|
(error = vdev_label_init(vd, crtxg,
|
|
|
|
VDEV_LABEL_SPARE)) == 0) {
|
|
|
|
VERIFY(nvlist_add_uint64(spares[i], ZPOOL_CONFIG_GUID,
|
|
|
|
vd->vdev_guid) == 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
vdev_free(vd);
|
|
|
|
|
|
|
|
if (error && mode != VDEV_ALLOC_SPARE)
|
|
|
|
goto out;
|
|
|
|
else
|
|
|
|
error = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
spa->spa_pending_spares = NULL;
|
|
|
|
spa->spa_pending_nspares = 0;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pool Creation
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_create(const char *pool, nvlist_t *nvroot, const char *altroot)
|
|
|
|
{
|
|
|
|
spa_t *spa;
|
|
|
|
vdev_t *rvd;
|
|
|
|
dsl_pool_t *dp;
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
int c, error = 0;
|
|
|
|
uint64_t txg = TXG_INITIAL;
|
|
|
|
nvlist_t **spares;
|
|
|
|
uint_t nspares;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If this pool already exists, return failure.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
if (spa_lookup(pool) != NULL) {
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (EEXIST);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate a new spa_t structure.
|
|
|
|
*/
|
|
|
|
spa = spa_add(pool, altroot);
|
|
|
|
spa_activate(spa);
|
|
|
|
|
|
|
|
spa->spa_uberblock.ub_txg = txg - 1;
|
|
|
|
spa->spa_uberblock.ub_version = ZFS_VERSION;
|
|
|
|
spa->spa_ubsync = spa->spa_uberblock;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the root vdev.
|
|
|
|
*/
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
|
|
|
|
error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD);
|
|
|
|
|
|
|
|
ASSERT(error != 0 || rvd != NULL);
|
|
|
|
ASSERT(error != 0 || spa->spa_root_vdev == rvd);
|
|
|
|
|
|
|
|
if (error == 0 && rvd->vdev_children == 0)
|
|
|
|
error = EINVAL;
|
|
|
|
|
|
|
|
if (error == 0 &&
|
|
|
|
(error = vdev_create(rvd, txg, B_FALSE)) == 0 &&
|
|
|
|
(error = spa_validate_spares(spa, nvroot, txg,
|
|
|
|
VDEV_ALLOC_ADD)) == 0) {
|
|
|
|
for (c = 0; c < rvd->vdev_children; c++)
|
|
|
|
vdev_init(rvd->vdev_child[c], txg);
|
|
|
|
vdev_config_dirty(rvd);
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
if (error != 0) {
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
spa_remove(spa);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get the list of spares, if specified.
|
|
|
|
*/
|
|
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
|
|
&spares, &nspares) == 0) {
|
|
|
|
VERIFY(nvlist_alloc(&spa->spa_sparelist, NV_UNIQUE_NAME,
|
|
|
|
KM_SLEEP) == 0);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
spa_load_spares(spa);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
spa->spa_sync_spares = B_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
spa->spa_dsl_pool = dp = dsl_pool_create(spa, txg);
|
|
|
|
spa->spa_meta_objset = dp->dp_meta_objset;
|
|
|
|
|
|
|
|
tx = dmu_tx_create_assigned(dp, txg);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the pool config object.
|
|
|
|
*/
|
|
|
|
spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset,
|
|
|
|
DMU_OT_PACKED_NVLIST, 1 << 14,
|
|
|
|
DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx);
|
|
|
|
|
|
|
|
if (zap_add(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) {
|
|
|
|
cmn_err(CE_PANIC, "failed to add pool config");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Newly created pools are always deflated. */
|
|
|
|
spa->spa_deflate = TRUE;
|
|
|
|
if (zap_add(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) {
|
|
|
|
cmn_err(CE_PANIC, "failed to add deflate");
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the deferred-free bplist object. Turn off compression
|
|
|
|
* because sync-to-convergence takes longer if the blocksize
|
|
|
|
* keeps changing.
|
|
|
|
*/
|
|
|
|
spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset,
|
|
|
|
1 << 14, tx);
|
|
|
|
dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj,
|
|
|
|
ZIO_COMPRESS_OFF, tx);
|
|
|
|
|
|
|
|
if (zap_add(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) {
|
|
|
|
cmn_err(CE_PANIC, "failed to add bplist");
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the pool's history object.
|
|
|
|
*/
|
|
|
|
spa_history_create_obj(spa, tx);
|
|
|
|
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
|
|
|
|
spa->spa_bootfs = zfs_prop_default_numeric(ZFS_PROP_BOOTFS);
|
|
|
|
spa->spa_sync_on = B_TRUE;
|
|
|
|
txg_sync_start(spa->spa_dsl_pool);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We explicitly wait for the first transaction to complete so that our
|
|
|
|
* bean counters are appropriately updated.
|
|
|
|
*/
|
|
|
|
txg_wait_synced(spa->spa_dsl_pool, txg);
|
|
|
|
|
|
|
|
spa_config_sync();
|
|
|
|
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Import the given pool into the system. We set up the necessary spa_t and
|
|
|
|
* then call spa_load() to do the dirty work.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_import(const char *pool, nvlist_t *config, const char *altroot)
|
|
|
|
{
|
|
|
|
spa_t *spa;
|
|
|
|
int error;
|
|
|
|
nvlist_t *nvroot;
|
|
|
|
nvlist_t **spares;
|
|
|
|
uint_t nspares;
|
|
|
|
|
|
|
|
if (!(spa_mode & FWRITE))
|
|
|
|
return (EROFS);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If a pool with this name exists, return failure.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
if (spa_lookup(pool) != NULL) {
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (EEXIST);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create and initialize the spa structure.
|
|
|
|
*/
|
|
|
|
spa = spa_add(pool, altroot);
|
|
|
|
spa_activate(spa);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pass off the heavy lifting to spa_load().
|
|
|
|
* Pass TRUE for mosconfig because the user-supplied config
|
|
|
|
* is actually the one to trust when doing an import.
|
|
|
|
*/
|
|
|
|
error = spa_load(spa, config, SPA_LOAD_IMPORT, B_TRUE);
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
/*
|
|
|
|
* Toss any existing sparelist, as it doesn't have any validity anymore,
|
|
|
|
* and conflicts with spa_has_spare().
|
|
|
|
*/
|
|
|
|
if (spa->spa_sparelist) {
|
|
|
|
nvlist_free(spa->spa_sparelist);
|
|
|
|
spa->spa_sparelist = NULL;
|
|
|
|
spa_load_spares(spa);
|
|
|
|
}
|
|
|
|
|
|
|
|
VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
|
|
|
|
&nvroot) == 0);
|
|
|
|
if (error == 0)
|
|
|
|
error = spa_validate_spares(spa, nvroot, -1ULL,
|
|
|
|
VDEV_ALLOC_SPARE);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
if (error != 0) {
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
spa_remove(spa);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Override any spares as specified by the user, as these may have
|
|
|
|
* correct device names/devids, etc.
|
|
|
|
*/
|
|
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
|
|
&spares, &nspares) == 0) {
|
|
|
|
if (spa->spa_sparelist)
|
|
|
|
VERIFY(nvlist_remove(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
else
|
|
|
|
VERIFY(nvlist_alloc(&spa->spa_sparelist,
|
|
|
|
NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
spa_load_spares(spa);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
spa->spa_sync_spares = B_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update the config cache to include the newly-imported pool.
|
|
|
|
*/
|
|
|
|
spa_config_update(spa, SPA_CONFIG_UPDATE_POOL);
|
|
|
|
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Resilver anything that's out of date.
|
|
|
|
*/
|
|
|
|
if (spa_mode & FWRITE)
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This (illegal) pool name is used when temporarily importing a spa_t in order
|
|
|
|
* to get the vdev stats associated with the imported devices.
|
|
|
|
*/
|
|
|
|
#define TRYIMPORT_NAME "$import"
|
|
|
|
|
|
|
|
nvlist_t *
|
|
|
|
spa_tryimport(nvlist_t *tryconfig)
|
|
|
|
{
|
|
|
|
nvlist_t *config = NULL;
|
|
|
|
char *poolname;
|
|
|
|
spa_t *spa;
|
|
|
|
uint64_t state;
|
|
|
|
|
|
|
|
if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname))
|
|
|
|
return (NULL);
|
|
|
|
|
|
|
|
if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state))
|
|
|
|
return (NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create and initialize the spa structure.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa = spa_add(TRYIMPORT_NAME, NULL);
|
|
|
|
spa_activate(spa);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pass off the heavy lifting to spa_load().
|
|
|
|
* Pass TRUE for mosconfig because the user-supplied config
|
|
|
|
* is actually the one to trust when doing an import.
|
|
|
|
*/
|
|
|
|
(void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If 'tryconfig' was at least parsable, return the current config.
|
|
|
|
*/
|
|
|
|
if (spa->spa_root_vdev != NULL) {
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
config = spa_config_generate(spa, NULL, -1ULL, B_TRUE);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME,
|
|
|
|
poolname) == 0);
|
|
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE,
|
|
|
|
state) == 0);
|
2007-04-08 16:29:25 +00:00
|
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP,
|
|
|
|
spa->spa_uberblock.ub_timestamp) == 0);
|
2007-04-06 01:09:06 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Add the list of hot spares.
|
|
|
|
*/
|
|
|
|
spa_add_spares(spa, config);
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
spa_remove(spa);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
return (config);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pool export/destroy
|
|
|
|
*
|
|
|
|
* The act of destroying or exporting a pool is very simple. We make sure there
|
|
|
|
* is no more pending I/O and any references to the pool are gone. Then, we
|
|
|
|
* update the pool state and sync all the labels to disk, removing the
|
|
|
|
* configuration from the cache afterwards.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
spa_export_common(char *pool, int new_state, nvlist_t **oldconfig)
|
|
|
|
{
|
|
|
|
spa_t *spa;
|
|
|
|
|
|
|
|
if (oldconfig)
|
|
|
|
*oldconfig = NULL;
|
|
|
|
|
|
|
|
if (!(spa_mode & FWRITE))
|
|
|
|
return (EROFS);
|
|
|
|
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
if ((spa = spa_lookup(pool)) == NULL) {
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (ENOENT);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Put a hold on the pool, drop the namespace lock, stop async tasks,
|
|
|
|
* reacquire the namespace lock, and see if we can export.
|
|
|
|
*/
|
|
|
|
spa_open_ref(spa, FTAG);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
spa_async_suspend(spa);
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa_close(spa, FTAG);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The pool will be in core if it's openable,
|
|
|
|
* in which case we can modify its state.
|
|
|
|
*/
|
|
|
|
if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) {
|
|
|
|
/*
|
|
|
|
* Objsets may be open only because they're dirty, so we
|
|
|
|
* have to force it to sync before checking spa_refcnt.
|
|
|
|
*/
|
|
|
|
spa_scrub_suspend(spa);
|
|
|
|
txg_wait_synced(spa->spa_dsl_pool, 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* A pool cannot be exported or destroyed if there are active
|
|
|
|
* references. If we are resetting a pool, allow references by
|
|
|
|
* fault injection handlers.
|
|
|
|
*/
|
|
|
|
if (!spa_refcount_zero(spa) ||
|
|
|
|
(spa->spa_inject_ref != 0 &&
|
|
|
|
new_state != POOL_STATE_UNINITIALIZED)) {
|
|
|
|
spa_scrub_resume(spa);
|
|
|
|
spa_async_resume(spa);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (EBUSY);
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_scrub_resume(spa);
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We want this to be reflected on every label,
|
|
|
|
* so mark them all dirty. spa_unload() will do the
|
|
|
|
* final sync that pushes these changes out.
|
|
|
|
*/
|
|
|
|
if (new_state != POOL_STATE_UNINITIALIZED) {
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
spa->spa_state = new_state;
|
|
|
|
spa->spa_final_txg = spa_last_synced_txg(spa) + 1;
|
|
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (spa->spa_state != POOL_STATE_UNINITIALIZED) {
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (oldconfig && spa->spa_config)
|
|
|
|
VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0);
|
|
|
|
|
|
|
|
if (new_state != POOL_STATE_UNINITIALIZED) {
|
|
|
|
spa_remove(spa);
|
|
|
|
spa_config_sync();
|
|
|
|
}
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Destroy a storage pool.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_destroy(char *pool)
|
|
|
|
{
|
|
|
|
return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Export a storage pool.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_export(char *pool, nvlist_t **oldconfig)
|
|
|
|
{
|
|
|
|
return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Similar to spa_export(), this unloads the spa_t without actually removing it
|
|
|
|
* from the namespace in any way.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_reset(char *pool)
|
|
|
|
{
|
|
|
|
return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ==========================================================================
|
|
|
|
* Device manipulation
|
|
|
|
* ==========================================================================
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Add capacity to a storage pool.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_vdev_add(spa_t *spa, nvlist_t *nvroot)
|
|
|
|
{
|
|
|
|
uint64_t txg;
|
|
|
|
int c, error;
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
vdev_t *vd, *tvd;
|
|
|
|
nvlist_t **spares;
|
|
|
|
uint_t i, nspares;
|
|
|
|
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
|
|
|
|
if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0,
|
|
|
|
VDEV_ALLOC_ADD)) != 0)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
|
|
|
|
|
|
spa->spa_pending_vdev = vd;
|
|
|
|
|
|
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
|
|
&spares, &nspares) != 0)
|
|
|
|
nspares = 0;
|
|
|
|
|
|
|
|
if (vd->vdev_children == 0 && nspares == 0) {
|
|
|
|
spa->spa_pending_vdev = NULL;
|
|
|
|
return (spa_vdev_exit(spa, vd, txg, EINVAL));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vd->vdev_children != 0) {
|
|
|
|
if ((error = vdev_create(vd, txg, B_FALSE)) != 0) {
|
|
|
|
spa->spa_pending_vdev = NULL;
|
|
|
|
return (spa_vdev_exit(spa, vd, txg, error));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We must validate the spares after checking the children. Otherwise,
|
|
|
|
* vdev_inuse() will blindly overwrite the spare.
|
|
|
|
*/
|
|
|
|
if ((error = spa_validate_spares(spa, nvroot, txg,
|
|
|
|
VDEV_ALLOC_ADD)) != 0) {
|
|
|
|
spa->spa_pending_vdev = NULL;
|
|
|
|
return (spa_vdev_exit(spa, vd, txg, error));
|
|
|
|
}
|
|
|
|
|
|
|
|
spa->spa_pending_vdev = NULL;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Transfer each new top-level vdev from vd to rvd.
|
|
|
|
*/
|
|
|
|
for (c = 0; c < vd->vdev_children; c++) {
|
|
|
|
tvd = vd->vdev_child[c];
|
|
|
|
vdev_remove_child(vd, tvd);
|
|
|
|
tvd->vdev_id = rvd->vdev_children;
|
|
|
|
vdev_add_child(rvd, tvd);
|
|
|
|
vdev_config_dirty(tvd);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (nspares != 0) {
|
|
|
|
if (spa->spa_sparelist != NULL) {
|
|
|
|
nvlist_t **oldspares;
|
|
|
|
uint_t oldnspares;
|
|
|
|
nvlist_t **newspares;
|
|
|
|
|
|
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, &oldspares, &oldnspares) == 0);
|
|
|
|
|
|
|
|
newspares = kmem_alloc(sizeof (void *) *
|
|
|
|
(nspares + oldnspares), KM_SLEEP);
|
|
|
|
for (i = 0; i < oldnspares; i++)
|
|
|
|
VERIFY(nvlist_dup(oldspares[i],
|
|
|
|
&newspares[i], KM_SLEEP) == 0);
|
|
|
|
for (i = 0; i < nspares; i++)
|
|
|
|
VERIFY(nvlist_dup(spares[i],
|
|
|
|
&newspares[i + oldnspares],
|
|
|
|
KM_SLEEP) == 0);
|
|
|
|
|
|
|
|
VERIFY(nvlist_remove(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
|
|
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, newspares,
|
|
|
|
nspares + oldnspares) == 0);
|
|
|
|
for (i = 0; i < oldnspares + nspares; i++)
|
|
|
|
nvlist_free(newspares[i]);
|
|
|
|
kmem_free(newspares, (oldnspares + nspares) *
|
|
|
|
sizeof (void *));
|
|
|
|
} else {
|
|
|
|
VERIFY(nvlist_alloc(&spa->spa_sparelist,
|
|
|
|
NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_load_spares(spa);
|
|
|
|
spa->spa_sync_spares = B_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We have to be careful when adding new vdevs to an existing pool.
|
|
|
|
* If other threads start allocating from these vdevs before we
|
|
|
|
* sync the config cache, and we lose power, then upon reboot we may
|
|
|
|
* fail to open the pool because there are DVAs that the config cache
|
|
|
|
* can't translate. Therefore, we first add the vdevs without
|
|
|
|
* initializing metaslabs; sync the config cache (via spa_vdev_exit());
|
|
|
|
* and then let spa_config_update() initialize the new metaslabs.
|
|
|
|
*
|
|
|
|
* spa_load() checks for added-but-not-initialized vdevs, so that
|
|
|
|
* if we lose power at any point in this sequence, the remaining
|
|
|
|
* steps will be completed the next time we load the pool.
|
|
|
|
*/
|
|
|
|
(void) spa_vdev_exit(spa, vd, txg, 0);
|
|
|
|
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa_config_update(spa, SPA_CONFIG_UPDATE_POOL);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Attach a device to a mirror. The arguments are the path to any device
|
|
|
|
* in the mirror, and the nvroot for the new device. If the path specifies
|
|
|
|
* a device that is not mirrored, we automatically insert the mirror vdev.
|
|
|
|
*
|
|
|
|
* If 'replacing' is specified, the new device is intended to replace the
|
|
|
|
* existing device; in this case the two devices are made into their own
|
|
|
|
* mirror using the 'replacing' vdev, which is functionally idendical to
|
|
|
|
* the mirror vdev (it actually reuses all the same ops) but has a few
|
|
|
|
* extra rules: you can't attach to it after it's been created, and upon
|
|
|
|
* completion of resilvering, the first disk (the one being replaced)
|
|
|
|
* is automatically detached.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing)
|
|
|
|
{
|
|
|
|
uint64_t txg, open_txg;
|
|
|
|
int error;
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd;
|
|
|
|
vdev_ops_t *pvops;
|
|
|
|
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
|
|
|
|
oldvd = vdev_lookup_by_guid(rvd, guid);
|
|
|
|
|
|
|
|
if (oldvd == NULL)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENODEV));
|
|
|
|
|
|
|
|
if (!oldvd->vdev_ops->vdev_op_leaf)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
|
|
|
|
pvd = oldvd->vdev_parent;
|
|
|
|
|
|
|
|
if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0,
|
|
|
|
VDEV_ALLOC_ADD)) != 0 || newrootvd->vdev_children != 1)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EINVAL));
|
|
|
|
|
|
|
|
newvd = newrootvd->vdev_child[0];
|
|
|
|
|
|
|
|
if (!newvd->vdev_ops->vdev_op_leaf)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EINVAL));
|
|
|
|
|
|
|
|
if ((error = vdev_create(newrootvd, txg, replacing)) != 0)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, error));
|
|
|
|
|
|
|
|
if (!replacing) {
|
|
|
|
/*
|
|
|
|
* For attach, the only allowable parent is a mirror or the root
|
|
|
|
* vdev.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_ops != &vdev_mirror_ops &&
|
|
|
|
pvd->vdev_ops != &vdev_root_ops)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
|
|
|
|
pvops = &vdev_mirror_ops;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Active hot spares can only be replaced by inactive hot
|
|
|
|
* spares.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_ops == &vdev_spare_ops &&
|
|
|
|
pvd->vdev_child[1] == oldvd &&
|
|
|
|
!spa_has_spare(spa, newvd->vdev_guid))
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the source is a hot spare, and the parent isn't already a
|
|
|
|
* spare, then we want to create a new hot spare. Otherwise, we
|
|
|
|
* want to create a replacing vdev. The user is not allowed to
|
|
|
|
* attach to a spared vdev child unless the 'isspare' state is
|
|
|
|
* the same (spare replaces spare, non-spare replaces
|
|
|
|
* non-spare).
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_ops == &vdev_replacing_ops)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
else if (pvd->vdev_ops == &vdev_spare_ops &&
|
|
|
|
newvd->vdev_isspare != oldvd->vdev_isspare)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
else if (pvd->vdev_ops != &vdev_spare_ops &&
|
|
|
|
newvd->vdev_isspare)
|
|
|
|
pvops = &vdev_spare_ops;
|
|
|
|
else
|
|
|
|
pvops = &vdev_replacing_ops;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Compare the new device size with the replaceable/attachable
|
|
|
|
* device size.
|
|
|
|
*/
|
|
|
|
if (newvd->vdev_psize < vdev_get_rsize(oldvd))
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The new device cannot have a higher alignment requirement
|
|
|
|
* than the top-level vdev.
|
|
|
|
*/
|
|
|
|
if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift)
|
|
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EDOM));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If this is an in-place replacement, update oldvd's path and devid
|
|
|
|
* to make it distinguishable from newvd, and unopenable from now on.
|
|
|
|
*/
|
|
|
|
if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) {
|
|
|
|
spa_strfree(oldvd->vdev_path);
|
|
|
|
oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5,
|
|
|
|
KM_SLEEP);
|
|
|
|
(void) sprintf(oldvd->vdev_path, "%s/%s",
|
|
|
|
newvd->vdev_path, "old");
|
|
|
|
if (oldvd->vdev_devid != NULL) {
|
|
|
|
spa_strfree(oldvd->vdev_devid);
|
|
|
|
oldvd->vdev_devid = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the parent is not a mirror, or if we're replacing, insert the new
|
|
|
|
* mirror/replacing/spare vdev above oldvd.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_ops != pvops)
|
|
|
|
pvd = vdev_add_parent(oldvd, pvops);
|
|
|
|
|
|
|
|
ASSERT(pvd->vdev_top->vdev_parent == rvd);
|
|
|
|
ASSERT(pvd->vdev_ops == pvops);
|
|
|
|
ASSERT(oldvd->vdev_parent == pvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Extract the new device from its root and add it to pvd.
|
|
|
|
*/
|
|
|
|
vdev_remove_child(newrootvd, newvd);
|
|
|
|
newvd->vdev_id = pvd->vdev_children;
|
|
|
|
vdev_add_child(pvd, newvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If newvd is smaller than oldvd, but larger than its rsize,
|
|
|
|
* the addition of newvd may have decreased our parent's asize.
|
|
|
|
*/
|
|
|
|
pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize);
|
|
|
|
|
|
|
|
tvd = newvd->vdev_top;
|
|
|
|
ASSERT(pvd->vdev_top == tvd);
|
|
|
|
ASSERT(tvd->vdev_parent == rvd);
|
|
|
|
|
|
|
|
vdev_config_dirty(tvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate
|
|
|
|
* upward when spa_vdev_exit() calls vdev_dtl_reassess().
|
|
|
|
*/
|
|
|
|
open_txg = txg + TXG_CONCURRENT_STATES - 1;
|
|
|
|
|
|
|
|
mutex_enter(&newvd->vdev_dtl_lock);
|
|
|
|
space_map_add(&newvd->vdev_dtl_map, TXG_INITIAL,
|
|
|
|
open_txg - TXG_INITIAL + 1);
|
|
|
|
mutex_exit(&newvd->vdev_dtl_lock);
|
|
|
|
|
|
|
|
if (newvd->vdev_isspare)
|
|
|
|
spa_spare_activate(newvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mark newvd's DTL dirty in this txg.
|
|
|
|
*/
|
|
|
|
vdev_dirty(tvd, VDD_DTL, newvd, txg);
|
|
|
|
|
|
|
|
(void) spa_vdev_exit(spa, newrootvd, open_txg, 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Kick off a resilver to update newvd.
|
|
|
|
*/
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Detach a device from a mirror or replacing vdev.
|
|
|
|
* If 'replace_done' is specified, only detach if the parent
|
|
|
|
* is a replacing vdev.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done)
|
|
|
|
{
|
|
|
|
uint64_t txg;
|
|
|
|
int c, t, error;
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
vdev_t *vd, *pvd, *cvd, *tvd;
|
|
|
|
boolean_t unspare = B_FALSE;
|
|
|
|
uint64_t unspare_guid;
|
|
|
|
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
|
|
|
|
vd = vdev_lookup_by_guid(rvd, guid);
|
|
|
|
|
|
|
|
if (vd == NULL)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENODEV));
|
|
|
|
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
|
|
|
|
pvd = vd->vdev_parent;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If replace_done is specified, only remove this device if it's
|
|
|
|
* the first child of a replacing vdev. For the 'spare' vdev, either
|
|
|
|
* disk can be removed.
|
|
|
|
*/
|
|
|
|
if (replace_done) {
|
|
|
|
if (pvd->vdev_ops == &vdev_replacing_ops) {
|
|
|
|
if (vd->vdev_id != 0)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
} else if (pvd->vdev_ops != &vdev_spare_ops) {
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
ASSERT(pvd->vdev_ops != &vdev_spare_ops ||
|
|
|
|
spa_version(spa) >= ZFS_VERSION_SPARES);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Only mirror, replacing, and spare vdevs support detach.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_ops != &vdev_replacing_ops &&
|
|
|
|
pvd->vdev_ops != &vdev_mirror_ops &&
|
|
|
|
pvd->vdev_ops != &vdev_spare_ops)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there's only one replica, you can't detach it.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_children <= 1)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, EBUSY));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If all siblings have non-empty DTLs, this device may have the only
|
|
|
|
* valid copy of the data, which means we cannot safely detach it.
|
|
|
|
*
|
|
|
|
* XXX -- as in the vdev_offline() case, we really want a more
|
|
|
|
* precise DTL check.
|
|
|
|
*/
|
|
|
|
for (c = 0; c < pvd->vdev_children; c++) {
|
|
|
|
uint64_t dirty;
|
|
|
|
|
|
|
|
cvd = pvd->vdev_child[c];
|
|
|
|
if (cvd == vd)
|
|
|
|
continue;
|
|
|
|
if (vdev_is_dead(cvd))
|
|
|
|
continue;
|
|
|
|
mutex_enter(&cvd->vdev_dtl_lock);
|
|
|
|
dirty = cvd->vdev_dtl_map.sm_space |
|
|
|
|
cvd->vdev_dtl_scrub.sm_space;
|
|
|
|
mutex_exit(&cvd->vdev_dtl_lock);
|
|
|
|
if (!dirty)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we are a replacing or spare vdev, then we can always detach the
|
|
|
|
* latter child, as that is how one cancels the operation.
|
|
|
|
*/
|
|
|
|
if ((pvd->vdev_ops == &vdev_mirror_ops || vd->vdev_id != 1) &&
|
|
|
|
c == pvd->vdev_children)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, EBUSY));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we are detaching the original disk from a spare, then it implies
|
|
|
|
* that the spare should become a real disk, and be removed from the
|
|
|
|
* active spare list for the pool.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_ops == &vdev_spare_ops &&
|
|
|
|
vd->vdev_id == 0)
|
|
|
|
unspare = B_TRUE;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Erase the disk labels so the disk can be used for other things.
|
|
|
|
* This must be done after all other error cases are handled,
|
|
|
|
* but before we disembowel vd (so we can still do I/O to it).
|
|
|
|
* But if we can't do it, don't treat the error as fatal --
|
|
|
|
* it may be that the unwritability of the disk is the reason
|
|
|
|
* it's being detached!
|
|
|
|
*/
|
|
|
|
error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove vd from its parent and compact the parent's children.
|
|
|
|
*/
|
|
|
|
vdev_remove_child(pvd, vd);
|
|
|
|
vdev_compact_children(pvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remember one of the remaining children so we can get tvd below.
|
|
|
|
*/
|
|
|
|
cvd = pvd->vdev_child[0];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we need to remove the remaining child from the list of hot spares,
|
|
|
|
* do it now, marking the vdev as no longer a spare in the process. We
|
|
|
|
* must do this before vdev_remove_parent(), because that can change the
|
|
|
|
* GUID if it creates a new toplevel GUID.
|
|
|
|
*/
|
|
|
|
if (unspare) {
|
|
|
|
ASSERT(cvd->vdev_isspare);
|
|
|
|
spa_spare_remove(cvd);
|
|
|
|
unspare_guid = cvd->vdev_guid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the parent mirror/replacing vdev only has one child,
|
|
|
|
* the parent is no longer needed. Remove it from the tree.
|
|
|
|
*/
|
|
|
|
if (pvd->vdev_children == 1)
|
|
|
|
vdev_remove_parent(cvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We don't set tvd until now because the parent we just removed
|
|
|
|
* may have been the previous top-level vdev.
|
|
|
|
*/
|
|
|
|
tvd = cvd->vdev_top;
|
|
|
|
ASSERT(tvd->vdev_parent == rvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reevaluate the parent vdev state.
|
|
|
|
*/
|
|
|
|
vdev_propagate_state(cvd->vdev_parent);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the device we just detached was smaller than the others, it may be
|
|
|
|
* possible to add metaslabs (i.e. grow the pool). vdev_metaslab_init()
|
|
|
|
* can't fail because the existing metaslabs are already in core, so
|
|
|
|
* there's nothing to read from disk.
|
|
|
|
*/
|
|
|
|
VERIFY(vdev_metaslab_init(tvd, txg) == 0);
|
|
|
|
|
|
|
|
vdev_config_dirty(tvd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that
|
|
|
|
* vd->vdev_detached is set and free vd's DTL object in syncing context.
|
|
|
|
* But first make sure we're not on any *other* txg's DTL list, to
|
|
|
|
* prevent vd from being accessed after it's freed.
|
|
|
|
*/
|
|
|
|
for (t = 0; t < TXG_SIZE; t++)
|
|
|
|
(void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t);
|
|
|
|
vd->vdev_detached = B_TRUE;
|
|
|
|
vdev_dirty(tvd, VDD_DTL, vd, txg);
|
|
|
|
|
|
|
|
error = spa_vdev_exit(spa, vd, txg, 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If this was the removal of the original device in a hot spare vdev,
|
|
|
|
* then we want to go through and remove the device from the hot spare
|
|
|
|
* list of every other pool.
|
|
|
|
*/
|
|
|
|
if (unspare) {
|
|
|
|
spa = NULL;
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
while ((spa = spa_next(spa)) != NULL) {
|
|
|
|
if (spa->spa_state != POOL_STATE_ACTIVE)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
(void) spa_vdev_remove(spa, unspare_guid, B_TRUE);
|
|
|
|
}
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove a device from the pool. Currently, this supports removing only hot
|
|
|
|
* spares.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare)
|
|
|
|
{
|
|
|
|
vdev_t *vd;
|
|
|
|
nvlist_t **spares, *nv, **newspares;
|
|
|
|
uint_t i, j, nspares;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
|
|
|
|
vd = spa_lookup_by_guid(spa, guid);
|
|
|
|
|
|
|
|
nv = NULL;
|
|
|
|
if (spa->spa_spares != NULL &&
|
|
|
|
nvlist_lookup_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES,
|
|
|
|
&spares, &nspares) == 0) {
|
|
|
|
for (i = 0; i < nspares; i++) {
|
|
|
|
uint64_t theguid;
|
|
|
|
|
|
|
|
VERIFY(nvlist_lookup_uint64(spares[i],
|
|
|
|
ZPOOL_CONFIG_GUID, &theguid) == 0);
|
|
|
|
if (theguid == guid) {
|
|
|
|
nv = spares[i];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We only support removing a hot spare, and only if it's not currently
|
|
|
|
* in use in this pool.
|
|
|
|
*/
|
|
|
|
if (nv == NULL && vd == NULL) {
|
|
|
|
ret = ENOENT;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (nv == NULL && vd != NULL) {
|
|
|
|
ret = ENOTSUP;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!unspare && nv != NULL && vd != NULL) {
|
|
|
|
ret = EBUSY;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (nspares == 1) {
|
|
|
|
newspares = NULL;
|
|
|
|
} else {
|
|
|
|
newspares = kmem_alloc((nspares - 1) * sizeof (void *),
|
|
|
|
KM_SLEEP);
|
|
|
|
for (i = 0, j = 0; i < nspares; i++) {
|
|
|
|
if (spares[i] != nv)
|
|
|
|
VERIFY(nvlist_dup(spares[i],
|
|
|
|
&newspares[j++], KM_SLEEP) == 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES,
|
|
|
|
DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES,
|
|
|
|
newspares, nspares - 1) == 0);
|
|
|
|
for (i = 0; i < nspares - 1; i++)
|
|
|
|
nvlist_free(newspares[i]);
|
|
|
|
kmem_free(newspares, (nspares - 1) * sizeof (void *));
|
|
|
|
spa_load_spares(spa);
|
|
|
|
spa->spa_sync_spares = B_TRUE;
|
|
|
|
|
|
|
|
out:
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find any device that's done replacing, so we can detach it.
|
|
|
|
*/
|
|
|
|
static vdev_t *
|
|
|
|
spa_vdev_replace_done_hunt(vdev_t *vd)
|
|
|
|
{
|
|
|
|
vdev_t *newvd, *oldvd;
|
|
|
|
int c;
|
|
|
|
|
|
|
|
for (c = 0; c < vd->vdev_children; c++) {
|
|
|
|
oldvd = spa_vdev_replace_done_hunt(vd->vdev_child[c]);
|
|
|
|
if (oldvd != NULL)
|
|
|
|
return (oldvd);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) {
|
|
|
|
oldvd = vd->vdev_child[0];
|
|
|
|
newvd = vd->vdev_child[1];
|
|
|
|
|
|
|
|
mutex_enter(&newvd->vdev_dtl_lock);
|
|
|
|
if (newvd->vdev_dtl_map.sm_space == 0 &&
|
|
|
|
newvd->vdev_dtl_scrub.sm_space == 0) {
|
|
|
|
mutex_exit(&newvd->vdev_dtl_lock);
|
|
|
|
return (oldvd);
|
|
|
|
}
|
|
|
|
mutex_exit(&newvd->vdev_dtl_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_vdev_replace_done(spa_t *spa)
|
|
|
|
{
|
|
|
|
vdev_t *vd;
|
|
|
|
vdev_t *pvd;
|
|
|
|
uint64_t guid;
|
|
|
|
uint64_t pguid = 0;
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
|
|
|
|
while ((vd = spa_vdev_replace_done_hunt(spa->spa_root_vdev)) != NULL) {
|
|
|
|
guid = vd->vdev_guid;
|
|
|
|
/*
|
|
|
|
* If we have just finished replacing a hot spared device, then
|
|
|
|
* we need to detach the parent's first child (the original hot
|
|
|
|
* spare) as well.
|
|
|
|
*/
|
|
|
|
pvd = vd->vdev_parent;
|
|
|
|
if (pvd->vdev_parent->vdev_ops == &vdev_spare_ops &&
|
|
|
|
pvd->vdev_id == 0) {
|
|
|
|
ASSERT(pvd->vdev_ops == &vdev_replacing_ops);
|
|
|
|
ASSERT(pvd->vdev_parent->vdev_children == 2);
|
|
|
|
pguid = pvd->vdev_parent->vdev_child[1]->vdev_guid;
|
|
|
|
}
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
if (spa_vdev_detach(spa, guid, B_TRUE) != 0)
|
|
|
|
return;
|
|
|
|
if (pguid != 0 && spa_vdev_detach(spa, pguid, B_TRUE) != 0)
|
|
|
|
return;
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update the stored path for this vdev. Dirty the vdev configuration, relying
|
|
|
|
* on spa_vdev_enter/exit() to synchronize the labels and cache.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath)
|
|
|
|
{
|
|
|
|
vdev_t *rvd, *vd;
|
|
|
|
uint64_t txg;
|
|
|
|
|
|
|
|
rvd = spa->spa_root_vdev;
|
|
|
|
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
|
|
|
|
if ((vd = vdev_lookup_by_guid(rvd, guid)) == NULL) {
|
|
|
|
/*
|
|
|
|
* Determine if this is a reference to a hot spare. In that
|
|
|
|
* case, update the path as stored in the spare list.
|
|
|
|
*/
|
|
|
|
nvlist_t **spares;
|
|
|
|
uint_t i, nspares;
|
|
|
|
if (spa->spa_sparelist != NULL) {
|
|
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist,
|
|
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
|
|
for (i = 0; i < nspares; i++) {
|
|
|
|
uint64_t theguid;
|
|
|
|
VERIFY(nvlist_lookup_uint64(spares[i],
|
|
|
|
ZPOOL_CONFIG_GUID, &theguid) == 0);
|
|
|
|
if (theguid == guid)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i == nspares)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOENT));
|
|
|
|
|
|
|
|
VERIFY(nvlist_add_string(spares[i],
|
|
|
|
ZPOOL_CONFIG_PATH, newpath) == 0);
|
|
|
|
spa_load_spares(spa);
|
|
|
|
spa->spa_sync_spares = B_TRUE;
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, 0));
|
|
|
|
} else {
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOENT));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
|
|
|
|
spa_strfree(vd->vdev_path);
|
|
|
|
vd->vdev_path = spa_strdup(newpath);
|
|
|
|
|
|
|
|
vdev_config_dirty(vd->vdev_top);
|
|
|
|
|
|
|
|
return (spa_vdev_exit(spa, NULL, txg, 0));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ==========================================================================
|
|
|
|
* SPA Scrubbing
|
|
|
|
* ==========================================================================
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_scrub_io_done(zio_t *zio)
|
|
|
|
{
|
|
|
|
spa_t *spa = zio->io_spa;
|
|
|
|
|
|
|
|
zio_data_buf_free(zio->io_data, zio->io_size);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
if (zio->io_error && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
|
|
|
|
vdev_t *vd = zio->io_vd ? zio->io_vd : spa->spa_root_vdev;
|
|
|
|
spa->spa_scrub_errors++;
|
|
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
|
|
vd->vdev_stat.vs_scrub_errors++;
|
|
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (--spa->spa_scrub_inflight < spa->spa_scrub_maxinflight)
|
|
|
|
cv_broadcast(&spa->spa_scrub_io_cv);
|
|
|
|
|
|
|
|
ASSERT(spa->spa_scrub_inflight >= 0);
|
|
|
|
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_scrub_io_start(spa_t *spa, blkptr_t *bp, int priority, int flags,
|
|
|
|
zbookmark_t *zb)
|
|
|
|
{
|
|
|
|
size_t size = BP_GET_LSIZE(bp);
|
|
|
|
void *data;
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
/*
|
|
|
|
* Do not give too much work to vdev(s).
|
|
|
|
*/
|
|
|
|
while (spa->spa_scrub_inflight >= spa->spa_scrub_maxinflight) {
|
|
|
|
cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
spa->spa_scrub_inflight++;
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
data = zio_data_buf_alloc(size);
|
|
|
|
|
|
|
|
if (zb->zb_level == -1 && BP_GET_TYPE(bp) != DMU_OT_OBJSET)
|
|
|
|
flags |= ZIO_FLAG_SPECULATIVE; /* intent log block */
|
|
|
|
|
|
|
|
flags |= ZIO_FLAG_SCRUB_THREAD | ZIO_FLAG_CANFAIL;
|
|
|
|
|
|
|
|
zio_nowait(zio_read(NULL, spa, bp, data, size,
|
|
|
|
spa_scrub_io_done, NULL, priority, flags, zb));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
spa_scrub_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a)
|
|
|
|
{
|
|
|
|
blkptr_t *bp = &bc->bc_blkptr;
|
|
|
|
vdev_t *vd = spa->spa_root_vdev;
|
|
|
|
dva_t *dva = bp->blk_dva;
|
|
|
|
int needs_resilver = B_FALSE;
|
|
|
|
int d;
|
|
|
|
|
|
|
|
if (bc->bc_errno) {
|
|
|
|
/*
|
|
|
|
* We can't scrub this block, but we can continue to scrub
|
|
|
|
* the rest of the pool. Note the error and move along.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
spa->spa_scrub_errors++;
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
|
|
vd->vdev_stat.vs_scrub_errors++;
|
|
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
|
|
|
|
|
|
return (ERESTART);
|
|
|
|
}
|
|
|
|
|
|
|
|
ASSERT(bp->blk_birth < spa->spa_scrub_maxtxg);
|
|
|
|
|
|
|
|
for (d = 0; d < BP_GET_NDVAS(bp); d++) {
|
|
|
|
vd = vdev_lookup_top(spa, DVA_GET_VDEV(&dva[d]));
|
|
|
|
|
|
|
|
ASSERT(vd != NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Keep track of how much data we've examined so that
|
|
|
|
* zpool(1M) status can make useful progress reports.
|
|
|
|
*/
|
|
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
|
|
vd->vdev_stat.vs_scrub_examined += DVA_GET_ASIZE(&dva[d]);
|
|
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
|
|
|
|
|
|
if (spa->spa_scrub_type == POOL_SCRUB_RESILVER) {
|
|
|
|
if (DVA_GET_GANG(&dva[d])) {
|
|
|
|
/*
|
|
|
|
* Gang members may be spread across multiple
|
|
|
|
* vdevs, so the best we can do is look at the
|
|
|
|
* pool-wide DTL.
|
|
|
|
* XXX -- it would be better to change our
|
|
|
|
* allocation policy to ensure that this can't
|
|
|
|
* happen.
|
|
|
|
*/
|
|
|
|
vd = spa->spa_root_vdev;
|
|
|
|
}
|
|
|
|
if (vdev_dtl_contains(&vd->vdev_dtl_map,
|
|
|
|
bp->blk_birth, 1))
|
|
|
|
needs_resilver = B_TRUE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (spa->spa_scrub_type == POOL_SCRUB_EVERYTHING)
|
|
|
|
spa_scrub_io_start(spa, bp, ZIO_PRIORITY_SCRUB,
|
|
|
|
ZIO_FLAG_SCRUB, &bc->bc_bookmark);
|
|
|
|
else if (needs_resilver)
|
|
|
|
spa_scrub_io_start(spa, bp, ZIO_PRIORITY_RESILVER,
|
|
|
|
ZIO_FLAG_RESILVER, &bc->bc_bookmark);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_scrub_thread(void *arg)
|
|
|
|
{
|
|
|
|
spa_t *spa = arg;
|
|
|
|
callb_cpr_t cprinfo;
|
|
|
|
traverse_handle_t *th = spa->spa_scrub_th;
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
pool_scrub_type_t scrub_type = spa->spa_scrub_type;
|
|
|
|
int error = 0;
|
|
|
|
boolean_t complete;
|
|
|
|
|
|
|
|
CALLB_CPR_INIT(&cprinfo, &spa->spa_scrub_lock, callb_generic_cpr, FTAG);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we're restarting due to a snapshot create/delete,
|
|
|
|
* wait for that to complete.
|
|
|
|
*/
|
|
|
|
txg_wait_synced(spa_get_dsl(spa), 0);
|
|
|
|
|
|
|
|
dprintf("start %s mintxg=%llu maxtxg=%llu\n",
|
|
|
|
scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub",
|
|
|
|
spa->spa_scrub_mintxg, spa->spa_scrub_maxtxg);
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
vdev_reopen(rvd); /* purge all vdev caches */
|
|
|
|
vdev_config_dirty(rvd); /* rewrite all disk labels */
|
|
|
|
vdev_scrub_stat_update(rvd, scrub_type, B_FALSE);
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
spa->spa_scrub_errors = 0;
|
|
|
|
spa->spa_scrub_active = 1;
|
|
|
|
ASSERT(spa->spa_scrub_inflight == 0);
|
|
|
|
|
|
|
|
while (!spa->spa_scrub_stop) {
|
|
|
|
CALLB_CPR_SAFE_BEGIN(&cprinfo);
|
|
|
|
while (spa->spa_scrub_suspended) {
|
|
|
|
spa->spa_scrub_active = 0;
|
|
|
|
cv_broadcast(&spa->spa_scrub_cv);
|
|
|
|
cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock);
|
|
|
|
spa->spa_scrub_active = 1;
|
|
|
|
}
|
|
|
|
CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
if (spa->spa_scrub_restart_txg != 0)
|
|
|
|
break;
|
|
|
|
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
error = traverse_more(th);
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
if (error != EAGAIN)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (spa->spa_scrub_inflight)
|
|
|
|
cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
spa->spa_scrub_active = 0;
|
|
|
|
cv_broadcast(&spa->spa_scrub_cv);
|
|
|
|
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Note: we check spa_scrub_restart_txg under both spa_scrub_lock
|
|
|
|
* AND the spa config lock to synchronize with any config changes
|
|
|
|
* that revise the DTLs under spa_vdev_enter() / spa_vdev_exit().
|
|
|
|
*/
|
|
|
|
if (spa->spa_scrub_restart_txg != 0)
|
|
|
|
error = ERESTART;
|
|
|
|
|
|
|
|
if (spa->spa_scrub_stop)
|
|
|
|
error = EINTR;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Even if there were uncorrectable errors, we consider the scrub
|
|
|
|
* completed. The downside is that if there is a transient error during
|
|
|
|
* a resilver, we won't resilver the data properly to the target. But
|
|
|
|
* if the damage is permanent (more likely) we will resilver forever,
|
|
|
|
* which isn't really acceptable. Since there is enough information for
|
|
|
|
* the user to know what has failed and why, this seems like a more
|
|
|
|
* tractable approach.
|
|
|
|
*/
|
|
|
|
complete = (error == 0);
|
|
|
|
|
|
|
|
dprintf("end %s to maxtxg=%llu %s, traverse=%d, %llu errors, stop=%u\n",
|
|
|
|
scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub",
|
|
|
|
spa->spa_scrub_maxtxg, complete ? "done" : "FAILED",
|
|
|
|
error, spa->spa_scrub_errors, spa->spa_scrub_stop);
|
|
|
|
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the scrub/resilver completed, update all DTLs to reflect this.
|
|
|
|
* Whether it succeeded or not, vacate all temporary scrub DTLs.
|
|
|
|
*/
|
|
|
|
vdev_dtl_reassess(rvd, spa_last_synced_txg(spa) + 1,
|
|
|
|
complete ? spa->spa_scrub_maxtxg : 0, B_TRUE);
|
|
|
|
vdev_scrub_stat_update(rvd, POOL_SCRUB_NONE, complete);
|
|
|
|
spa_errlog_rotate(spa);
|
|
|
|
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We may have finished replacing a device.
|
|
|
|
* Let the async thread assess this and handle the detach.
|
|
|
|
*/
|
|
|
|
spa_async_request(spa, SPA_ASYNC_REPLACE_DONE);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we were told to restart, our final act is to start a new scrub.
|
|
|
|
*/
|
|
|
|
if (error == ERESTART)
|
|
|
|
spa_async_request(spa, scrub_type == POOL_SCRUB_RESILVER ?
|
|
|
|
SPA_ASYNC_RESILVER : SPA_ASYNC_SCRUB);
|
|
|
|
|
|
|
|
spa->spa_scrub_type = POOL_SCRUB_NONE;
|
|
|
|
spa->spa_scrub_active = 0;
|
|
|
|
spa->spa_scrub_thread = NULL;
|
|
|
|
cv_broadcast(&spa->spa_scrub_cv);
|
|
|
|
CALLB_CPR_EXIT(&cprinfo); /* drops &spa->spa_scrub_lock */
|
|
|
|
thread_exit();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_scrub_suspend(spa_t *spa)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
spa->spa_scrub_suspended++;
|
|
|
|
while (spa->spa_scrub_active) {
|
|
|
|
cv_broadcast(&spa->spa_scrub_cv);
|
|
|
|
cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
while (spa->spa_scrub_inflight)
|
|
|
|
cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_scrub_resume(spa_t *spa)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
ASSERT(spa->spa_scrub_suspended != 0);
|
|
|
|
if (--spa->spa_scrub_suspended == 0)
|
|
|
|
cv_broadcast(&spa->spa_scrub_cv);
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_scrub_restart(spa_t *spa, uint64_t txg)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Something happened (e.g. snapshot create/delete) that means
|
|
|
|
* we must restart any in-progress scrubs. The itinerary will
|
|
|
|
* fix this properly.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
spa->spa_scrub_restart_txg = txg;
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force)
|
|
|
|
{
|
|
|
|
space_seg_t *ss;
|
|
|
|
uint64_t mintxg, maxtxg;
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
|
|
|
|
if ((uint_t)type >= POOL_SCRUB_TYPES)
|
|
|
|
return (ENOTSUP);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there's a scrub or resilver already in progress, stop it.
|
|
|
|
*/
|
|
|
|
while (spa->spa_scrub_thread != NULL) {
|
|
|
|
/*
|
|
|
|
* Don't stop a resilver unless forced.
|
|
|
|
*/
|
|
|
|
if (spa->spa_scrub_type == POOL_SCRUB_RESILVER && !force) {
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
return (EBUSY);
|
|
|
|
}
|
|
|
|
spa->spa_scrub_stop = 1;
|
|
|
|
cv_broadcast(&spa->spa_scrub_cv);
|
|
|
|
cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Terminate the previous traverse.
|
|
|
|
*/
|
|
|
|
if (spa->spa_scrub_th != NULL) {
|
|
|
|
traverse_fini(spa->spa_scrub_th);
|
|
|
|
spa->spa_scrub_th = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rvd == NULL) {
|
|
|
|
ASSERT(spa->spa_scrub_stop == 0);
|
|
|
|
ASSERT(spa->spa_scrub_type == type);
|
|
|
|
ASSERT(spa->spa_scrub_restart_txg == 0);
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
mintxg = TXG_INITIAL - 1;
|
|
|
|
maxtxg = spa_last_synced_txg(spa) + 1;
|
|
|
|
|
|
|
|
mutex_enter(&rvd->vdev_dtl_lock);
|
|
|
|
|
|
|
|
if (rvd->vdev_dtl_map.sm_space == 0) {
|
|
|
|
/*
|
|
|
|
* The pool-wide DTL is empty.
|
|
|
|
* If this is a resilver, there's nothing to do except
|
|
|
|
* check whether any in-progress replacements have completed.
|
|
|
|
*/
|
|
|
|
if (type == POOL_SCRUB_RESILVER) {
|
|
|
|
type = POOL_SCRUB_NONE;
|
|
|
|
spa_async_request(spa, SPA_ASYNC_REPLACE_DONE);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* The pool-wide DTL is non-empty.
|
|
|
|
* If this is a normal scrub, upgrade to a resilver instead.
|
|
|
|
*/
|
|
|
|
if (type == POOL_SCRUB_EVERYTHING)
|
|
|
|
type = POOL_SCRUB_RESILVER;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type == POOL_SCRUB_RESILVER) {
|
|
|
|
/*
|
|
|
|
* Determine the resilvering boundaries.
|
|
|
|
*
|
|
|
|
* Note: (mintxg, maxtxg) is an open interval,
|
|
|
|
* i.e. mintxg and maxtxg themselves are not included.
|
|
|
|
*
|
|
|
|
* Note: for maxtxg, we MIN with spa_last_synced_txg(spa) + 1
|
|
|
|
* so we don't claim to resilver a txg that's still changing.
|
|
|
|
*/
|
|
|
|
ss = avl_first(&rvd->vdev_dtl_map.sm_root);
|
|
|
|
mintxg = ss->ss_start - 1;
|
|
|
|
ss = avl_last(&rvd->vdev_dtl_map.sm_root);
|
|
|
|
maxtxg = MIN(ss->ss_end, maxtxg);
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_exit(&rvd->vdev_dtl_lock);
|
|
|
|
|
|
|
|
spa->spa_scrub_stop = 0;
|
|
|
|
spa->spa_scrub_type = type;
|
|
|
|
spa->spa_scrub_restart_txg = 0;
|
|
|
|
|
|
|
|
if (type != POOL_SCRUB_NONE) {
|
|
|
|
spa->spa_scrub_mintxg = mintxg;
|
|
|
|
spa->spa_scrub_maxtxg = maxtxg;
|
|
|
|
spa->spa_scrub_th = traverse_init(spa, spa_scrub_cb, NULL,
|
|
|
|
ADVANCE_PRE | ADVANCE_PRUNE | ADVANCE_ZIL,
|
|
|
|
ZIO_FLAG_CANFAIL);
|
|
|
|
traverse_add_pool(spa->spa_scrub_th, mintxg, maxtxg);
|
|
|
|
spa->spa_scrub_thread = thread_create(NULL, 0,
|
|
|
|
spa_scrub_thread, spa, 0, &p0, TS_RUN, minclsyspri);
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ==========================================================================
|
|
|
|
* SPA async task processing
|
|
|
|
* ==========================================================================
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_async_reopen(spa_t *spa)
|
|
|
|
{
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
vdev_t *tvd;
|
|
|
|
int c;
|
|
|
|
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
|
|
|
|
for (c = 0; c < rvd->vdev_children; c++) {
|
|
|
|
tvd = rvd->vdev_child[c];
|
|
|
|
if (tvd->vdev_reopen_wanted) {
|
|
|
|
tvd->vdev_reopen_wanted = 0;
|
|
|
|
vdev_reopen(tvd);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_async_thread(void *arg)
|
|
|
|
{
|
|
|
|
spa_t *spa = arg;
|
|
|
|
int tasks;
|
|
|
|
|
|
|
|
ASSERT(spa->spa_sync_on);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
|
|
tasks = spa->spa_async_tasks;
|
|
|
|
spa->spa_async_tasks = 0;
|
|
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* See if the config needs to be updated.
|
|
|
|
*/
|
|
|
|
if (tasks & SPA_ASYNC_CONFIG_UPDATE) {
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa_config_update(spa, SPA_CONFIG_UPDATE_POOL);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* See if any devices need to be reopened.
|
|
|
|
*/
|
|
|
|
if (tasks & SPA_ASYNC_REOPEN)
|
|
|
|
spa_async_reopen(spa);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If any devices are done replacing, detach them.
|
|
|
|
*/
|
|
|
|
if (tasks & SPA_ASYNC_REPLACE_DONE)
|
|
|
|
spa_vdev_replace_done(spa);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Kick off a scrub.
|
|
|
|
*/
|
|
|
|
if (tasks & SPA_ASYNC_SCRUB)
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_TRUE) == 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Kick off a resilver.
|
|
|
|
*/
|
|
|
|
if (tasks & SPA_ASYNC_RESILVER)
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Let the world know that we're done.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
|
|
spa->spa_async_thread = NULL;
|
|
|
|
cv_broadcast(&spa->spa_async_cv);
|
|
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
thread_exit();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_async_suspend(spa_t *spa)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
|
|
spa->spa_async_suspended++;
|
|
|
|
while (spa->spa_async_thread != NULL)
|
|
|
|
cv_wait(&spa->spa_async_cv, &spa->spa_async_lock);
|
|
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_async_resume(spa_t *spa)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
|
|
ASSERT(spa->spa_async_suspended != 0);
|
|
|
|
spa->spa_async_suspended--;
|
|
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_async_dispatch(spa_t *spa)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
|
|
if (spa->spa_async_tasks && !spa->spa_async_suspended &&
|
|
|
|
spa->spa_async_thread == NULL &&
|
|
|
|
rootdir != NULL && !vn_is_readonly(rootdir))
|
|
|
|
spa->spa_async_thread = thread_create(NULL, 0,
|
|
|
|
spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri);
|
|
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_async_request(spa_t *spa, int task)
|
|
|
|
{
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
|
|
spa->spa_async_tasks |= task;
|
|
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ==========================================================================
|
|
|
|
* SPA syncing routines
|
|
|
|
* ==========================================================================
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_sync_deferred_frees(spa_t *spa, uint64_t txg)
|
|
|
|
{
|
|
|
|
bplist_t *bpl = &spa->spa_sync_bplist;
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
blkptr_t blk;
|
|
|
|
uint64_t itor = 0;
|
|
|
|
zio_t *zio;
|
|
|
|
int error;
|
|
|
|
uint8_t c = 1;
|
|
|
|
|
|
|
|
zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CONFIG_HELD);
|
|
|
|
|
|
|
|
while (bplist_iterate(bpl, &itor, &blk) == 0)
|
|
|
|
zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL));
|
|
|
|
|
|
|
|
error = zio_wait(zio);
|
|
|
|
ASSERT3U(error, ==, 0);
|
|
|
|
|
|
|
|
tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg);
|
|
|
|
bplist_vacate(bpl, tx);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pre-dirty the first block so we sync to convergence faster.
|
|
|
|
* (Usually only the first block is needed.)
|
|
|
|
*/
|
|
|
|
dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx);
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
char *packed = NULL;
|
|
|
|
size_t nvsize = 0;
|
|
|
|
dmu_buf_t *db;
|
|
|
|
|
|
|
|
VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0);
|
|
|
|
|
|
|
|
packed = kmem_alloc(nvsize, KM_SLEEP);
|
|
|
|
|
|
|
|
VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR,
|
|
|
|
KM_SLEEP) == 0);
|
|
|
|
|
|
|
|
dmu_write(spa->spa_meta_objset, obj, 0, nvsize, packed, tx);
|
|
|
|
|
|
|
|
kmem_free(packed, nvsize);
|
|
|
|
|
|
|
|
VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db));
|
|
|
|
dmu_buf_will_dirty(db, tx);
|
|
|
|
*(uint64_t *)db->db_data = nvsize;
|
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_sync_spares(spa_t *spa, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
nvlist_t *nvroot;
|
|
|
|
nvlist_t **spares;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (!spa->spa_sync_spares)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update the MOS nvlist describing the list of available spares.
|
|
|
|
* spa_validate_spares() will have already made sure this nvlist is
|
|
|
|
* valid and the vdevs are labelled appropriately.
|
|
|
|
*/
|
|
|
|
if (spa->spa_spares_object == 0) {
|
|
|
|
spa->spa_spares_object = dmu_object_alloc(spa->spa_meta_objset,
|
|
|
|
DMU_OT_PACKED_NVLIST, 1 << 14,
|
|
|
|
DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx);
|
|
|
|
VERIFY(zap_update(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SPARES,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_spares_object, tx) == 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
|
|
if (spa->spa_nspares == 0) {
|
|
|
|
VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
|
|
NULL, 0) == 0);
|
|
|
|
} else {
|
|
|
|
spares = kmem_alloc(spa->spa_nspares * sizeof (void *),
|
|
|
|
KM_SLEEP);
|
|
|
|
for (i = 0; i < spa->spa_nspares; i++)
|
|
|
|
spares[i] = vdev_config_generate(spa,
|
|
|
|
spa->spa_spares[i], B_FALSE, B_TRUE);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
|
|
spares, spa->spa_nspares) == 0);
|
|
|
|
for (i = 0; i < spa->spa_nspares; i++)
|
|
|
|
nvlist_free(spares[i]);
|
|
|
|
kmem_free(spares, spa->spa_nspares * sizeof (void *));
|
|
|
|
}
|
|
|
|
|
|
|
|
spa_sync_nvlist(spa, spa->spa_spares_object, nvroot, tx);
|
|
|
|
nvlist_free(nvroot);
|
|
|
|
|
|
|
|
spa->spa_sync_spares = B_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_sync_config_object(spa_t *spa, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
nvlist_t *config;
|
|
|
|
|
|
|
|
if (list_is_empty(&spa->spa_dirty_list))
|
|
|
|
return;
|
|
|
|
|
|
|
|
config = spa_config_generate(spa, NULL, dmu_tx_get_txg(tx), B_FALSE);
|
|
|
|
|
|
|
|
if (spa->spa_config_syncing)
|
|
|
|
nvlist_free(spa->spa_config_syncing);
|
|
|
|
spa->spa_config_syncing = config;
|
|
|
|
|
|
|
|
spa_sync_nvlist(spa, spa->spa_config_object, config, tx);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
spa_sync_props(void *arg1, void *arg2, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
spa_t *spa = arg1;
|
|
|
|
nvlist_t *nvp = arg2;
|
|
|
|
nvpair_t *nvpair;
|
|
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
|
|
uint64_t zapobj;
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_props_lock);
|
|
|
|
if (spa->spa_pool_props_object == 0) {
|
|
|
|
zapobj = zap_create(mos, DMU_OT_POOL_PROPS, DMU_OT_NONE, 0, tx);
|
|
|
|
VERIFY(zapobj > 0);
|
|
|
|
|
|
|
|
spa->spa_pool_props_object = zapobj;
|
|
|
|
|
|
|
|
VERIFY(zap_update(mos, DMU_POOL_DIRECTORY_OBJECT,
|
|
|
|
DMU_POOL_PROPS, 8, 1,
|
|
|
|
&spa->spa_pool_props_object, tx) == 0);
|
|
|
|
}
|
|
|
|
mutex_exit(&spa->spa_props_lock);
|
|
|
|
|
|
|
|
nvpair = NULL;
|
|
|
|
while ((nvpair = nvlist_next_nvpair(nvp, nvpair))) {
|
|
|
|
switch (zpool_name_to_prop(nvpair_name(nvpair))) {
|
|
|
|
case ZFS_PROP_BOOTFS:
|
|
|
|
VERIFY(nvlist_lookup_uint64(nvp,
|
|
|
|
nvpair_name(nvpair), &spa->spa_bootfs) == 0);
|
|
|
|
VERIFY(zap_update(mos,
|
|
|
|
spa->spa_pool_props_object,
|
|
|
|
zpool_prop_to_name(ZFS_PROP_BOOTFS), 8, 1,
|
|
|
|
&spa->spa_bootfs, tx) == 0);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sync the specified transaction group. New blocks may be dirtied as
|
|
|
|
* part of the process, so we iterate until it converges.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
spa_sync(spa_t *spa, uint64_t txg)
|
|
|
|
{
|
|
|
|
dsl_pool_t *dp = spa->spa_dsl_pool;
|
|
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
|
|
bplist_t *bpl = &spa->spa_sync_bplist;
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
vdev_t *vd;
|
|
|
|
dmu_tx_t *tx;
|
|
|
|
int dirty_vdevs;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Lock out configuration changes.
|
|
|
|
*/
|
|
|
|
spa_config_enter(spa, RW_READER, FTAG);
|
|
|
|
|
|
|
|
spa->spa_syncing_txg = txg;
|
|
|
|
spa->spa_sync_pass = 0;
|
|
|
|
|
|
|
|
VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj));
|
|
|
|
|
|
|
|
tx = dmu_tx_create_assigned(dp, txg);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we are upgrading to ZFS_VERSION_RAIDZ_DEFLATE this txg,
|
|
|
|
* set spa_deflate if we have no raid-z vdevs.
|
|
|
|
*/
|
|
|
|
if (spa->spa_ubsync.ub_version < ZFS_VERSION_RAIDZ_DEFLATE &&
|
|
|
|
spa->spa_uberblock.ub_version >= ZFS_VERSION_RAIDZ_DEFLATE) {
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < rvd->vdev_children; i++) {
|
|
|
|
vd = rvd->vdev_child[i];
|
|
|
|
if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == rvd->vdev_children) {
|
|
|
|
spa->spa_deflate = TRUE;
|
|
|
|
VERIFY(0 == zap_add(spa->spa_meta_objset,
|
|
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE,
|
|
|
|
sizeof (uint64_t), 1, &spa->spa_deflate, tx));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If anything has changed in this txg, push the deferred frees
|
|
|
|
* from the previous txg. If not, leave them alone so that we
|
|
|
|
* don't generate work on an otherwise idle system.
|
|
|
|
*/
|
|
|
|
if (!txg_list_empty(&dp->dp_dirty_datasets, txg) ||
|
|
|
|
!txg_list_empty(&dp->dp_dirty_dirs, txg) ||
|
|
|
|
!txg_list_empty(&dp->dp_sync_tasks, txg))
|
|
|
|
spa_sync_deferred_frees(spa, txg);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Iterate to convergence.
|
|
|
|
*/
|
|
|
|
do {
|
|
|
|
spa->spa_sync_pass++;
|
|
|
|
|
|
|
|
spa_sync_config_object(spa, tx);
|
|
|
|
spa_sync_spares(spa, tx);
|
|
|
|
spa_errlog_sync(spa, txg);
|
|
|
|
dsl_pool_sync(dp, txg);
|
|
|
|
|
|
|
|
dirty_vdevs = 0;
|
|
|
|
while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) {
|
|
|
|
vdev_sync(vd, txg);
|
|
|
|
dirty_vdevs++;
|
|
|
|
}
|
|
|
|
|
|
|
|
bplist_sync(bpl, tx);
|
|
|
|
} while (dirty_vdevs);
|
|
|
|
|
|
|
|
bplist_close(bpl);
|
|
|
|
|
|
|
|
dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Rewrite the vdev configuration (which includes the uberblock)
|
|
|
|
* to commit the transaction group.
|
|
|
|
*
|
|
|
|
* If there are any dirty vdevs, sync the uberblock to all vdevs.
|
|
|
|
* Otherwise, pick a random top-level vdev that's known to be
|
|
|
|
* visible in the config cache (see spa_vdev_add() for details).
|
|
|
|
* If the write fails, try the next vdev until we're tried them all.
|
|
|
|
*/
|
|
|
|
if (!list_is_empty(&spa->spa_dirty_list)) {
|
|
|
|
VERIFY(vdev_config_sync(rvd, txg) == 0);
|
|
|
|
} else {
|
|
|
|
int children = rvd->vdev_children;
|
|
|
|
int c0 = spa_get_random(children);
|
|
|
|
int c;
|
|
|
|
|
|
|
|
for (c = 0; c < children; c++) {
|
|
|
|
vd = rvd->vdev_child[(c0 + c) % children];
|
|
|
|
if (vd->vdev_ms_array == 0)
|
|
|
|
continue;
|
|
|
|
if (vdev_config_sync(vd, txg) == 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (c == children)
|
|
|
|
VERIFY(vdev_config_sync(rvd, txg) == 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Clear the dirty config list.
|
|
|
|
*/
|
|
|
|
while ((vd = list_head(&spa->spa_dirty_list)) != NULL)
|
|
|
|
vdev_config_clean(vd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Now that the new config has synced transactionally,
|
|
|
|
* let it become visible to the config cache.
|
|
|
|
*/
|
|
|
|
if (spa->spa_config_syncing != NULL) {
|
|
|
|
spa_config_set(spa, spa->spa_config_syncing);
|
|
|
|
spa->spa_config_txg = txg;
|
|
|
|
spa->spa_config_syncing = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make a stable copy of the fully synced uberblock.
|
|
|
|
* We use this as the root for pool traversals.
|
|
|
|
*/
|
|
|
|
spa->spa_traverse_wanted = 1; /* tells traverse_more() to stop */
|
|
|
|
|
|
|
|
spa_scrub_suspend(spa); /* stop scrubbing and finish I/Os */
|
|
|
|
|
|
|
|
rw_enter(&spa->spa_traverse_lock, RW_WRITER);
|
|
|
|
spa->spa_traverse_wanted = 0;
|
|
|
|
spa->spa_ubsync = spa->spa_uberblock;
|
|
|
|
rw_exit(&spa->spa_traverse_lock);
|
|
|
|
|
|
|
|
spa_scrub_resume(spa); /* resume scrub with new ubsync */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Clean up the ZIL records for the synced txg.
|
|
|
|
*/
|
|
|
|
dsl_pool_zil_clean(dp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update usable space statistics.
|
|
|
|
*/
|
|
|
|
while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)))
|
|
|
|
vdev_sync_done(vd, txg);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* It had better be the case that we didn't dirty anything
|
|
|
|
* since vdev_config_sync().
|
|
|
|
*/
|
|
|
|
ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg));
|
|
|
|
ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg));
|
|
|
|
ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg));
|
|
|
|
ASSERT(bpl->bpl_queue == NULL);
|
|
|
|
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If any async tasks have been requested, kick them off.
|
|
|
|
*/
|
|
|
|
spa_async_dispatch(spa);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sync all pools. We don't want to hold the namespace lock across these
|
|
|
|
* operations, so we take a reference on the spa_t and drop the lock during the
|
|
|
|
* sync.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
spa_sync_allpools(void)
|
|
|
|
{
|
|
|
|
spa_t *spa = NULL;
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
while ((spa = spa_next(spa)) != NULL) {
|
|
|
|
if (spa_state(spa) != POOL_STATE_ACTIVE)
|
|
|
|
continue;
|
|
|
|
spa_open_ref(spa, FTAG);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
txg_wait_synced(spa_get_dsl(spa), 0);
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa_close(spa, FTAG);
|
|
|
|
}
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ==========================================================================
|
|
|
|
* Miscellaneous routines
|
|
|
|
* ==========================================================================
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove all pools in the system.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
spa_evict_all(void)
|
|
|
|
{
|
|
|
|
spa_t *spa;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove all cached state. All pools should be closed now,
|
|
|
|
* so every spa in the AVL tree should be unreferenced.
|
|
|
|
*/
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
while ((spa = spa_next(NULL)) != NULL) {
|
|
|
|
/*
|
|
|
|
* Stop async tasks. The async thread may need to detach
|
|
|
|
* a device that's been replaced, which requires grabbing
|
|
|
|
* spa_namespace_lock, so we must drop it here.
|
|
|
|
*/
|
|
|
|
spa_open_ref(spa, FTAG);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
spa_async_suspend(spa);
|
|
|
|
VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0);
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
spa_close(spa, FTAG);
|
|
|
|
|
|
|
|
if (spa->spa_state != POOL_STATE_UNINITIALIZED) {
|
|
|
|
spa_unload(spa);
|
|
|
|
spa_deactivate(spa);
|
|
|
|
}
|
|
|
|
spa_remove(spa);
|
|
|
|
}
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
vdev_t *
|
|
|
|
spa_lookup_by_guid(spa_t *spa, uint64_t guid)
|
|
|
|
{
|
|
|
|
return (vdev_lookup_by_guid(spa->spa_root_vdev, guid));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
spa_upgrade(spa_t *spa)
|
|
|
|
{
|
|
|
|
spa_config_enter(spa, RW_WRITER, FTAG);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This should only be called for a non-faulted pool, and since a
|
|
|
|
* future version would result in an unopenable pool, this shouldn't be
|
|
|
|
* possible.
|
|
|
|
*/
|
|
|
|
ASSERT(spa->spa_uberblock.ub_version <= ZFS_VERSION);
|
|
|
|
|
|
|
|
spa->spa_uberblock.ub_version = ZFS_VERSION;
|
|
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
|
|
|
|
|
|
spa_config_exit(spa, FTAG);
|
|
|
|
|
|
|
|
txg_wait_synced(spa_get_dsl(spa), 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
|
|
|
spa_has_spare(spa_t *spa, uint64_t guid)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
uint64_t spareguid;
|
|
|
|
|
|
|
|
for (i = 0; i < spa->spa_nspares; i++)
|
|
|
|
if (spa->spa_spares[i]->vdev_guid == guid)
|
|
|
|
return (B_TRUE);
|
|
|
|
|
|
|
|
for (i = 0; i < spa->spa_pending_nspares; i++) {
|
|
|
|
if (nvlist_lookup_uint64(spa->spa_pending_spares[i],
|
|
|
|
ZPOOL_CONFIG_GUID, &spareguid) == 0 &&
|
|
|
|
spareguid == guid)
|
|
|
|
return (B_TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (B_FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
spa_set_props(spa_t *spa, nvlist_t *nvp)
|
|
|
|
{
|
|
|
|
return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props,
|
|
|
|
spa, nvp, 3));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
spa_get_props(spa_t *spa, nvlist_t **nvp)
|
|
|
|
{
|
|
|
|
zap_cursor_t zc;
|
|
|
|
zap_attribute_t za;
|
|
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
|
|
zfs_source_t src;
|
|
|
|
zfs_prop_t prop;
|
|
|
|
nvlist_t *propval;
|
|
|
|
uint64_t value;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
|
|
|
|
|
|
mutex_enter(&spa->spa_props_lock);
|
|
|
|
/* If no props object, then just return empty nvlist */
|
|
|
|
if (spa->spa_pool_props_object == 0) {
|
|
|
|
mutex_exit(&spa->spa_props_lock);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object);
|
|
|
|
(err = zap_cursor_retrieve(&zc, &za)) == 0;
|
|
|
|
zap_cursor_advance(&zc)) {
|
|
|
|
|
|
|
|
if ((prop = zpool_name_to_prop(za.za_name)) == ZFS_PROP_INVAL)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
|
|
switch (za.za_integer_length) {
|
|
|
|
case 8:
|
|
|
|
if (zfs_prop_default_numeric(prop) ==
|
|
|
|
za.za_first_integer)
|
|
|
|
src = ZFS_SRC_DEFAULT;
|
|
|
|
else
|
|
|
|
src = ZFS_SRC_LOCAL;
|
|
|
|
value = za.za_first_integer;
|
|
|
|
|
|
|
|
if (prop == ZFS_PROP_BOOTFS) {
|
|
|
|
dsl_pool_t *dp;
|
|
|
|
dsl_dataset_t *ds = NULL;
|
|
|
|
char strval[MAXPATHLEN];
|
|
|
|
|
|
|
|
dp = spa_get_dsl(spa);
|
|
|
|
rw_enter(&dp->dp_config_rwlock, RW_READER);
|
|
|
|
if ((err = dsl_dataset_open_obj(dp,
|
|
|
|
za.za_first_integer, NULL, DS_MODE_NONE,
|
|
|
|
FTAG, &ds)) != 0) {
|
|
|
|
rw_exit(&dp->dp_config_rwlock);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
dsl_dataset_name(ds, strval);
|
|
|
|
dsl_dataset_close(ds, DS_MODE_NONE, FTAG);
|
|
|
|
rw_exit(&dp->dp_config_rwlock);
|
|
|
|
|
|
|
|
VERIFY(nvlist_add_uint64(propval,
|
|
|
|
ZFS_PROP_SOURCE, src) == 0);
|
|
|
|
VERIFY(nvlist_add_string(propval,
|
|
|
|
ZFS_PROP_VALUE, strval) == 0);
|
|
|
|
} else {
|
|
|
|
VERIFY(nvlist_add_uint64(propval,
|
|
|
|
ZFS_PROP_SOURCE, src) == 0);
|
|
|
|
VERIFY(nvlist_add_uint64(propval,
|
|
|
|
ZFS_PROP_VALUE, value) == 0);
|
|
|
|
}
|
|
|
|
VERIFY(nvlist_add_nvlist(*nvp, za.za_name,
|
|
|
|
propval) == 0);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
nvlist_free(propval);
|
|
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
|
|
|
mutex_exit(&spa->spa_props_lock);
|
|
|
|
if (err && err != ENOENT) {
|
|
|
|
nvlist_free(*nvp);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the bootfs property value is dsobj, clear it.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
spa_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) {
|
|
|
|
VERIFY(zap_remove(spa->spa_meta_objset,
|
|
|
|
spa->spa_pool_props_object,
|
|
|
|
zpool_prop_to_name(ZFS_PROP_BOOTFS), tx) == 0);
|
|
|
|
spa->spa_bootfs = 0;
|
|
|
|
}
|
|
|
|
}
|