spa.c revision 264670
1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd 22168404Spjd/* 23219089Spjd * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24264670Sdelphij * Copyright (c) 2011, 2014 by Delphix. All rights reserved. 25249188Smm * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 26247265Smm * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 27168404Spjd */ 28168404Spjd 29168404Spjd/* 30251629Sdelphij * SPA: Storage Pool Allocator 31251629Sdelphij * 32168404Spjd * This file contains all the routines used when modifying on-disk SPA state. 33168404Spjd * This includes opening, importing, destroying, exporting a pool, and syncing a 34168404Spjd * pool. 35168404Spjd */ 36168404Spjd 37168404Spjd#include <sys/zfs_context.h> 38168404Spjd#include <sys/fm/fs/zfs.h> 39168404Spjd#include <sys/spa_impl.h> 40168404Spjd#include <sys/zio.h> 41168404Spjd#include <sys/zio_checksum.h> 42168404Spjd#include <sys/dmu.h> 43168404Spjd#include <sys/dmu_tx.h> 44168404Spjd#include <sys/zap.h> 45168404Spjd#include <sys/zil.h> 46219089Spjd#include <sys/ddt.h> 47168404Spjd#include <sys/vdev_impl.h> 48168404Spjd#include <sys/metaslab.h> 49219089Spjd#include <sys/metaslab_impl.h> 50168404Spjd#include <sys/uberblock_impl.h> 51168404Spjd#include <sys/txg.h> 52168404Spjd#include <sys/avl.h> 53168404Spjd#include <sys/dmu_traverse.h> 54168404Spjd#include <sys/dmu_objset.h> 55168404Spjd#include <sys/unique.h> 56168404Spjd#include <sys/dsl_pool.h> 57168404Spjd#include <sys/dsl_dataset.h> 58168404Spjd#include <sys/dsl_dir.h> 59168404Spjd#include <sys/dsl_prop.h> 60168404Spjd#include <sys/dsl_synctask.h> 61168404Spjd#include <sys/fs/zfs.h> 62185029Spjd#include <sys/arc.h> 63168404Spjd#include <sys/callb.h> 64185029Spjd#include <sys/spa_boot.h> 65219089Spjd#include <sys/zfs_ioctl.h> 66219089Spjd#include <sys/dsl_scan.h> 67248571Smm#include <sys/dmu_send.h> 68248571Smm#include <sys/dsl_destroy.h> 69248571Smm#include <sys/dsl_userhold.h> 70236884Smm#include <sys/zfeature.h> 71219089Spjd#include <sys/zvol.h> 72240868Spjd#include <sys/trim_map.h> 73168404Spjd 74219089Spjd#ifdef _KERNEL 75219089Spjd#include <sys/callb.h> 76219089Spjd#include <sys/cpupart.h> 77219089Spjd#include <sys/zone.h> 78219089Spjd#endif /* _KERNEL */ 79219089Spjd 80185029Spjd#include "zfs_prop.h" 81185029Spjd#include "zfs_comutil.h" 82168404Spjd 83204073Spjd/* Check hostid on import? */ 84204073Spjdstatic int check_hostid = 1; 85204073Spjd 86204073SpjdSYSCTL_DECL(_vfs_zfs); 87204073SpjdTUNABLE_INT("vfs.zfs.check_hostid", &check_hostid); 88204073SpjdSYSCTL_INT(_vfs_zfs, OID_AUTO, check_hostid, CTLFLAG_RW, &check_hostid, 0, 89204073Spjd "Check hostid on import?"); 90204073Spjd 91251636Sdelphij/* 92251636Sdelphij * The interval, in seconds, at which failed configuration cache file writes 93251636Sdelphij * should be retried. 94251636Sdelphij */ 95251636Sdelphijstatic int zfs_ccw_retry_interval = 300; 96251636Sdelphij 97219089Spjdtypedef enum zti_modes { 98258631Savg ZTI_MODE_FIXED, /* value is # of threads (min 1) */ 99258631Savg ZTI_MODE_BATCH, /* cpu-intensive; value is ignored */ 100258631Savg ZTI_MODE_NULL, /* don't create a taskq */ 101258631Savg ZTI_NMODES 102219089Spjd} zti_modes_t; 103168712Spjd 104258631Savg#define ZTI_P(n, q) { ZTI_MODE_FIXED, (n), (q) } 105258631Savg#define ZTI_BATCH { ZTI_MODE_BATCH, 0, 1 } 106258631Savg#define ZTI_NULL { ZTI_MODE_NULL, 0, 0 } 107209962Smm 108258631Savg#define ZTI_N(n) ZTI_P(n, 1) 109258631Savg#define ZTI_ONE ZTI_N(1) 110209962Smm 111209962Smmtypedef struct zio_taskq_info { 112258631Savg zti_modes_t zti_mode; 113211931Smm uint_t zti_value; 114258631Savg uint_t zti_count; 115209962Smm} zio_taskq_info_t; 116209962Smm 117209962Smmstatic const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = { 118219089Spjd "issue", "issue_high", "intr", "intr_high" 119209962Smm}; 120209962Smm 121211931Smm/* 122258631Savg * This table defines the taskq settings for each ZFS I/O type. When 123258631Savg * initializing a pool, we use this table to create an appropriately sized 124258631Savg * taskq. Some operations are low volume and therefore have a small, static 125258631Savg * number of threads assigned to their taskqs using the ZTI_N(#) or ZTI_ONE 126258631Savg * macros. Other operations process a large amount of data; the ZTI_BATCH 127258631Savg * macro causes us to create a taskq oriented for throughput. Some operations 128258631Savg * are so high frequency and short-lived that the taskq itself can become a a 129258631Savg * point of lock contention. The ZTI_P(#, #) macro indicates that we need an 130258631Savg * additional degree of parallelism specified by the number of threads per- 131258631Savg * taskq and the number of taskqs; when dispatching an event in this case, the 132258631Savg * particular taskq is chosen at random. 133258631Savg * 134258631Savg * The different taskq priorities are to handle the different contexts (issue 135258631Savg * and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that 136258631Savg * need to be handled with minimum delay. 137211931Smm */ 138211931Smmconst zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = { 139211931Smm /* ISSUE ISSUE_HIGH INTR INTR_HIGH */ 140258631Savg { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */ 141264670Sdelphij { ZTI_N(8), ZTI_NULL, ZTI_P(12, 8), ZTI_NULL }, /* READ */ 142258631Savg { ZTI_BATCH, ZTI_N(5), ZTI_N(8), ZTI_N(5) }, /* WRITE */ 143258631Savg { ZTI_P(12, 8), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* FREE */ 144258631Savg { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* CLAIM */ 145258631Savg { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* IOCTL */ 146209962Smm}; 147209962Smm 148248571Smmstatic void spa_sync_version(void *arg, dmu_tx_t *tx); 149248571Smmstatic void spa_sync_props(void *arg, dmu_tx_t *tx); 150185029Spjdstatic boolean_t spa_has_active_shared_spare(spa_t *spa); 151219089Spjdstatic int spa_load_impl(spa_t *spa, uint64_t, nvlist_t *config, 152219089Spjd spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, 153219089Spjd char **ereport); 154219089Spjdstatic void spa_vdev_resilver_done(spa_t *spa); 155185029Spjd 156258632Savguint_t zio_taskq_batch_pct = 75; /* 1 thread per cpu in pset */ 157219089Spjd#ifdef PSRSET_BIND 158219089Spjdid_t zio_taskq_psrset_bind = PS_NONE; 159219089Spjd#endif 160219089Spjd#ifdef SYSDC 161219089Spjdboolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */ 162219089Spjd#endif 163219089Spjduint_t zio_taskq_basedc = 80; /* base duty cycle */ 164219089Spjd 165219089Spjdboolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ 166243503Smmextern int zfs_sync_pass_deferred_free; 167219089Spjd 168247265Smm#ifndef illumos 169247265Smmextern void spa_deadman(void *arg); 170247265Smm#endif 171247265Smm 172168404Spjd/* 173219089Spjd * This (illegal) pool name is used when temporarily importing a spa_t in order 174219089Spjd * to get the vdev stats associated with the imported devices. 175219089Spjd */ 176219089Spjd#define TRYIMPORT_NAME "$import" 177219089Spjd 178219089Spjd/* 179168404Spjd * ========================================================================== 180185029Spjd * SPA properties routines 181185029Spjd * ========================================================================== 182185029Spjd */ 183185029Spjd 184185029Spjd/* 185185029Spjd * Add a (source=src, propname=propval) list to an nvlist. 186185029Spjd */ 187185029Spjdstatic void 188185029Spjdspa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, 189185029Spjd uint64_t intval, zprop_source_t src) 190185029Spjd{ 191185029Spjd const char *propname = zpool_prop_to_name(prop); 192185029Spjd nvlist_t *propval; 193185029Spjd 194185029Spjd VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); 195185029Spjd VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); 196185029Spjd 197185029Spjd if (strval != NULL) 198185029Spjd VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); 199185029Spjd else 200185029Spjd VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); 201185029Spjd 202185029Spjd VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); 203185029Spjd nvlist_free(propval); 204185029Spjd} 205185029Spjd 206185029Spjd/* 207185029Spjd * Get property values from the spa configuration. 208185029Spjd */ 209185029Spjdstatic void 210185029Spjdspa_prop_get_config(spa_t *spa, nvlist_t **nvp) 211185029Spjd{ 212236155Smm vdev_t *rvd = spa->spa_root_vdev; 213236884Smm dsl_pool_t *pool = spa->spa_dsl_pool; 214209962Smm uint64_t size; 215219089Spjd uint64_t alloc; 216236155Smm uint64_t space; 217185029Spjd uint64_t cap, version; 218185029Spjd zprop_source_t src = ZPROP_SRC_NONE; 219185029Spjd spa_config_dirent_t *dp; 220185029Spjd 221185029Spjd ASSERT(MUTEX_HELD(&spa->spa_props_lock)); 222185029Spjd 223236155Smm if (rvd != NULL) { 224219089Spjd alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 225219089Spjd size = metaslab_class_get_space(spa_normal_class(spa)); 226209962Smm spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); 227209962Smm spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); 228219089Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src); 229219089Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL, 230219089Spjd size - alloc, src); 231236155Smm 232236155Smm space = 0; 233236155Smm for (int c = 0; c < rvd->vdev_children; c++) { 234236155Smm vdev_t *tvd = rvd->vdev_child[c]; 235236155Smm space += tvd->vdev_max_asize - tvd->vdev_asize; 236236155Smm } 237236155Smm spa_prop_add_list(*nvp, ZPOOL_PROP_EXPANDSZ, NULL, space, 238236155Smm src); 239236155Smm 240219089Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_READONLY, NULL, 241219089Spjd (spa_mode(spa) == FREAD), src); 242185029Spjd 243219089Spjd cap = (size == 0) ? 0 : (alloc * 100 / size); 244209962Smm spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); 245185029Spjd 246219089Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL, 247219089Spjd ddt_get_pool_dedup_ratio(spa), src); 248219089Spjd 249209962Smm spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, 250236155Smm rvd->vdev_state, src); 251209962Smm 252209962Smm version = spa_version(spa); 253209962Smm if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) 254209962Smm src = ZPROP_SRC_DEFAULT; 255209962Smm else 256209962Smm src = ZPROP_SRC_LOCAL; 257209962Smm spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, version, src); 258209962Smm } 259209962Smm 260236884Smm if (pool != NULL) { 261236884Smm dsl_dir_t *freedir = pool->dp_free_dir; 262236884Smm 263236884Smm /* 264236884Smm * The $FREE directory was introduced in SPA_VERSION_DEADLISTS, 265236884Smm * when opening pools before this version freedir will be NULL. 266236884Smm */ 267236884Smm if (freedir != NULL) { 268236884Smm spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, NULL, 269236884Smm freedir->dd_phys->dd_used_bytes, src); 270236884Smm } else { 271236884Smm spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, 272236884Smm NULL, 0, src); 273236884Smm } 274236884Smm } 275236884Smm 276185029Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); 277185029Spjd 278228103Smm if (spa->spa_comment != NULL) { 279228103Smm spa_prop_add_list(*nvp, ZPOOL_PROP_COMMENT, spa->spa_comment, 280228103Smm 0, ZPROP_SRC_LOCAL); 281228103Smm } 282228103Smm 283185029Spjd if (spa->spa_root != NULL) 284185029Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, 285185029Spjd 0, ZPROP_SRC_LOCAL); 286185029Spjd 287185029Spjd if ((dp = list_head(&spa->spa_config_list)) != NULL) { 288185029Spjd if (dp->scd_path == NULL) { 289185029Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, 290185029Spjd "none", 0, ZPROP_SRC_LOCAL); 291185029Spjd } else if (strcmp(dp->scd_path, spa_config_path) != 0) { 292185029Spjd spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, 293185029Spjd dp->scd_path, 0, ZPROP_SRC_LOCAL); 294185029Spjd } 295185029Spjd } 296185029Spjd} 297185029Spjd 298185029Spjd/* 299185029Spjd * Get zpool property values. 300185029Spjd */ 301185029Spjdint 302185029Spjdspa_prop_get(spa_t *spa, nvlist_t **nvp) 303185029Spjd{ 304219089Spjd objset_t *mos = spa->spa_meta_objset; 305185029Spjd zap_cursor_t zc; 306185029Spjd zap_attribute_t za; 307185029Spjd int err; 308185029Spjd 309185029Spjd VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); 310185029Spjd 311185029Spjd mutex_enter(&spa->spa_props_lock); 312185029Spjd 313185029Spjd /* 314185029Spjd * Get properties from the spa config. 315185029Spjd */ 316185029Spjd spa_prop_get_config(spa, nvp); 317185029Spjd 318185029Spjd /* If no pool property object, no more prop to get. */ 319219089Spjd if (mos == NULL || spa->spa_pool_props_object == 0) { 320185029Spjd mutex_exit(&spa->spa_props_lock); 321185029Spjd return (0); 322185029Spjd } 323185029Spjd 324185029Spjd /* 325185029Spjd * Get properties from the MOS pool property object. 326185029Spjd */ 327185029Spjd for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); 328185029Spjd (err = zap_cursor_retrieve(&zc, &za)) == 0; 329185029Spjd zap_cursor_advance(&zc)) { 330185029Spjd uint64_t intval = 0; 331185029Spjd char *strval = NULL; 332185029Spjd zprop_source_t src = ZPROP_SRC_DEFAULT; 333185029Spjd zpool_prop_t prop; 334185029Spjd 335185029Spjd if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL) 336185029Spjd continue; 337185029Spjd 338185029Spjd switch (za.za_integer_length) { 339185029Spjd case 8: 340185029Spjd /* integer property */ 341185029Spjd if (za.za_first_integer != 342185029Spjd zpool_prop_default_numeric(prop)) 343185029Spjd src = ZPROP_SRC_LOCAL; 344185029Spjd 345185029Spjd if (prop == ZPOOL_PROP_BOOTFS) { 346185029Spjd dsl_pool_t *dp; 347185029Spjd dsl_dataset_t *ds = NULL; 348185029Spjd 349185029Spjd dp = spa_get_dsl(spa); 350248571Smm dsl_pool_config_enter(dp, FTAG); 351185029Spjd if (err = dsl_dataset_hold_obj(dp, 352185029Spjd za.za_first_integer, FTAG, &ds)) { 353248571Smm dsl_pool_config_exit(dp, FTAG); 354185029Spjd break; 355185029Spjd } 356185029Spjd 357185029Spjd strval = kmem_alloc( 358185029Spjd MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, 359185029Spjd KM_SLEEP); 360185029Spjd dsl_dataset_name(ds, strval); 361185029Spjd dsl_dataset_rele(ds, FTAG); 362248571Smm dsl_pool_config_exit(dp, FTAG); 363185029Spjd } else { 364185029Spjd strval = NULL; 365185029Spjd intval = za.za_first_integer; 366185029Spjd } 367185029Spjd 368185029Spjd spa_prop_add_list(*nvp, prop, strval, intval, src); 369185029Spjd 370185029Spjd if (strval != NULL) 371185029Spjd kmem_free(strval, 372185029Spjd MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); 373185029Spjd 374185029Spjd break; 375185029Spjd 376185029Spjd case 1: 377185029Spjd /* string property */ 378185029Spjd strval = kmem_alloc(za.za_num_integers, KM_SLEEP); 379185029Spjd err = zap_lookup(mos, spa->spa_pool_props_object, 380185029Spjd za.za_name, 1, za.za_num_integers, strval); 381185029Spjd if (err) { 382185029Spjd kmem_free(strval, za.za_num_integers); 383185029Spjd break; 384185029Spjd } 385185029Spjd spa_prop_add_list(*nvp, prop, strval, 0, src); 386185029Spjd kmem_free(strval, za.za_num_integers); 387185029Spjd break; 388185029Spjd 389185029Spjd default: 390185029Spjd break; 391185029Spjd } 392185029Spjd } 393185029Spjd zap_cursor_fini(&zc); 394185029Spjd mutex_exit(&spa->spa_props_lock); 395185029Spjdout: 396185029Spjd if (err && err != ENOENT) { 397185029Spjd nvlist_free(*nvp); 398185029Spjd *nvp = NULL; 399185029Spjd return (err); 400185029Spjd } 401185029Spjd 402185029Spjd return (0); 403185029Spjd} 404185029Spjd 405185029Spjd/* 406185029Spjd * Validate the given pool properties nvlist and modify the list 407185029Spjd * for the property values to be set. 408185029Spjd */ 409185029Spjdstatic int 410185029Spjdspa_prop_validate(spa_t *spa, nvlist_t *props) 411185029Spjd{ 412185029Spjd nvpair_t *elem; 413185029Spjd int error = 0, reset_bootfs = 0; 414247187Smm uint64_t objnum = 0; 415236884Smm boolean_t has_feature = B_FALSE; 416185029Spjd 417185029Spjd elem = NULL; 418185029Spjd while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 419185029Spjd uint64_t intval; 420236884Smm char *strval, *slash, *check, *fname; 421236884Smm const char *propname = nvpair_name(elem); 422236884Smm zpool_prop_t prop = zpool_name_to_prop(propname); 423185029Spjd 424236884Smm switch (prop) { 425236884Smm case ZPROP_INVAL: 426236884Smm if (!zpool_prop_feature(propname)) { 427249195Smm error = SET_ERROR(EINVAL); 428236884Smm break; 429236884Smm } 430185029Spjd 431236884Smm /* 432236884Smm * Sanitize the input. 433236884Smm */ 434236884Smm if (nvpair_type(elem) != DATA_TYPE_UINT64) { 435249195Smm error = SET_ERROR(EINVAL); 436236884Smm break; 437236884Smm } 438185029Spjd 439236884Smm if (nvpair_value_uint64(elem, &intval) != 0) { 440249195Smm error = SET_ERROR(EINVAL); 441236884Smm break; 442236884Smm } 443236884Smm 444236884Smm if (intval != 0) { 445249195Smm error = SET_ERROR(EINVAL); 446236884Smm break; 447236884Smm } 448236884Smm 449236884Smm fname = strchr(propname, '@') + 1; 450236884Smm if (zfeature_lookup_name(fname, NULL) != 0) { 451249195Smm error = SET_ERROR(EINVAL); 452236884Smm break; 453236884Smm } 454236884Smm 455236884Smm has_feature = B_TRUE; 456236884Smm break; 457236884Smm 458185029Spjd case ZPOOL_PROP_VERSION: 459185029Spjd error = nvpair_value_uint64(elem, &intval); 460185029Spjd if (!error && 461236884Smm (intval < spa_version(spa) || 462236884Smm intval > SPA_VERSION_BEFORE_FEATURES || 463236884Smm has_feature)) 464249195Smm error = SET_ERROR(EINVAL); 465185029Spjd break; 466185029Spjd 467185029Spjd case ZPOOL_PROP_DELEGATION: 468185029Spjd case ZPOOL_PROP_AUTOREPLACE: 469185029Spjd case ZPOOL_PROP_LISTSNAPS: 470219089Spjd case ZPOOL_PROP_AUTOEXPAND: 471185029Spjd error = nvpair_value_uint64(elem, &intval); 472185029Spjd if (!error && intval > 1) 473249195Smm error = SET_ERROR(EINVAL); 474185029Spjd break; 475185029Spjd 476185029Spjd case ZPOOL_PROP_BOOTFS: 477209962Smm /* 478209962Smm * If the pool version is less than SPA_VERSION_BOOTFS, 479209962Smm * or the pool is still being created (version == 0), 480209962Smm * the bootfs property cannot be set. 481209962Smm */ 482185029Spjd if (spa_version(spa) < SPA_VERSION_BOOTFS) { 483249195Smm error = SET_ERROR(ENOTSUP); 484185029Spjd break; 485185029Spjd } 486185029Spjd 487185029Spjd /* 488185029Spjd * Make sure the vdev config is bootable 489185029Spjd */ 490185029Spjd if (!vdev_is_bootable(spa->spa_root_vdev)) { 491249195Smm error = SET_ERROR(ENOTSUP); 492185029Spjd break; 493185029Spjd } 494185029Spjd 495185029Spjd reset_bootfs = 1; 496185029Spjd 497185029Spjd error = nvpair_value_string(elem, &strval); 498185029Spjd 499185029Spjd if (!error) { 500236884Smm objset_t *os; 501185029Spjd uint64_t compress; 502185029Spjd 503185029Spjd if (strval == NULL || strval[0] == '\0') { 504185029Spjd objnum = zpool_prop_default_numeric( 505185029Spjd ZPOOL_PROP_BOOTFS); 506185029Spjd break; 507185029Spjd } 508185029Spjd 509219089Spjd if (error = dmu_objset_hold(strval, FTAG, &os)) 510185029Spjd break; 511185029Spjd 512219089Spjd /* Must be ZPL and not gzip compressed. */ 513219089Spjd 514219089Spjd if (dmu_objset_type(os) != DMU_OST_ZFS) { 515249195Smm error = SET_ERROR(ENOTSUP); 516248571Smm } else if ((error = 517248571Smm dsl_prop_get_int_ds(dmu_objset_ds(os), 518185029Spjd zfs_prop_to_name(ZFS_PROP_COMPRESSION), 519248571Smm &compress)) == 0 && 520185029Spjd !BOOTFS_COMPRESS_VALID(compress)) { 521249195Smm error = SET_ERROR(ENOTSUP); 522185029Spjd } else { 523185029Spjd objnum = dmu_objset_id(os); 524185029Spjd } 525219089Spjd dmu_objset_rele(os, FTAG); 526185029Spjd } 527185029Spjd break; 528185029Spjd 529185029Spjd case ZPOOL_PROP_FAILUREMODE: 530185029Spjd error = nvpair_value_uint64(elem, &intval); 531185029Spjd if (!error && (intval < ZIO_FAILURE_MODE_WAIT || 532185029Spjd intval > ZIO_FAILURE_MODE_PANIC)) 533249195Smm error = SET_ERROR(EINVAL); 534185029Spjd 535185029Spjd /* 536185029Spjd * This is a special case which only occurs when 537185029Spjd * the pool has completely failed. This allows 538185029Spjd * the user to change the in-core failmode property 539185029Spjd * without syncing it out to disk (I/Os might 540185029Spjd * currently be blocked). We do this by returning 541185029Spjd * EIO to the caller (spa_prop_set) to trick it 542185029Spjd * into thinking we encountered a property validation 543185029Spjd * error. 544185029Spjd */ 545185029Spjd if (!error && spa_suspended(spa)) { 546185029Spjd spa->spa_failmode = intval; 547249195Smm error = SET_ERROR(EIO); 548185029Spjd } 549185029Spjd break; 550185029Spjd 551185029Spjd case ZPOOL_PROP_CACHEFILE: 552185029Spjd if ((error = nvpair_value_string(elem, &strval)) != 0) 553185029Spjd break; 554185029Spjd 555185029Spjd if (strval[0] == '\0') 556185029Spjd break; 557185029Spjd 558185029Spjd if (strcmp(strval, "none") == 0) 559185029Spjd break; 560185029Spjd 561185029Spjd if (strval[0] != '/') { 562249195Smm error = SET_ERROR(EINVAL); 563185029Spjd break; 564185029Spjd } 565185029Spjd 566185029Spjd slash = strrchr(strval, '/'); 567185029Spjd ASSERT(slash != NULL); 568185029Spjd 569185029Spjd if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || 570185029Spjd strcmp(slash, "/..") == 0) 571249195Smm error = SET_ERROR(EINVAL); 572185029Spjd break; 573219089Spjd 574228103Smm case ZPOOL_PROP_COMMENT: 575228103Smm if ((error = nvpair_value_string(elem, &strval)) != 0) 576228103Smm break; 577228103Smm for (check = strval; *check != '\0'; check++) { 578228103Smm /* 579228103Smm * The kernel doesn't have an easy isprint() 580228103Smm * check. For this kernel check, we merely 581228103Smm * check ASCII apart from DEL. Fix this if 582228103Smm * there is an easy-to-use kernel isprint(). 583228103Smm */ 584228103Smm if (*check >= 0x7f) { 585249195Smm error = SET_ERROR(EINVAL); 586228103Smm break; 587228103Smm } 588228103Smm check++; 589228103Smm } 590228103Smm if (strlen(strval) > ZPROP_MAX_COMMENT) 591228103Smm error = E2BIG; 592228103Smm break; 593228103Smm 594219089Spjd case ZPOOL_PROP_DEDUPDITTO: 595219089Spjd if (spa_version(spa) < SPA_VERSION_DEDUP) 596249195Smm error = SET_ERROR(ENOTSUP); 597219089Spjd else 598219089Spjd error = nvpair_value_uint64(elem, &intval); 599219089Spjd if (error == 0 && 600219089Spjd intval != 0 && intval < ZIO_DEDUPDITTO_MIN) 601249195Smm error = SET_ERROR(EINVAL); 602219089Spjd break; 603185029Spjd } 604185029Spjd 605185029Spjd if (error) 606185029Spjd break; 607185029Spjd } 608185029Spjd 609185029Spjd if (!error && reset_bootfs) { 610185029Spjd error = nvlist_remove(props, 611185029Spjd zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); 612185029Spjd 613185029Spjd if (!error) { 614185029Spjd error = nvlist_add_uint64(props, 615185029Spjd zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); 616185029Spjd } 617185029Spjd } 618185029Spjd 619185029Spjd return (error); 620185029Spjd} 621185029Spjd 622209962Smmvoid 623209962Smmspa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync) 624209962Smm{ 625209962Smm char *cachefile; 626209962Smm spa_config_dirent_t *dp; 627209962Smm 628209962Smm if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), 629209962Smm &cachefile) != 0) 630209962Smm return; 631209962Smm 632209962Smm dp = kmem_alloc(sizeof (spa_config_dirent_t), 633209962Smm KM_SLEEP); 634209962Smm 635209962Smm if (cachefile[0] == '\0') 636209962Smm dp->scd_path = spa_strdup(spa_config_path); 637209962Smm else if (strcmp(cachefile, "none") == 0) 638209962Smm dp->scd_path = NULL; 639209962Smm else 640209962Smm dp->scd_path = spa_strdup(cachefile); 641209962Smm 642209962Smm list_insert_head(&spa->spa_config_list, dp); 643209962Smm if (need_sync) 644209962Smm spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); 645209962Smm} 646209962Smm 647185029Spjdint 648185029Spjdspa_prop_set(spa_t *spa, nvlist_t *nvp) 649185029Spjd{ 650185029Spjd int error; 651236884Smm nvpair_t *elem = NULL; 652209962Smm boolean_t need_sync = B_FALSE; 653185029Spjd 654185029Spjd if ((error = spa_prop_validate(spa, nvp)) != 0) 655185029Spjd return (error); 656185029Spjd 657209962Smm while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) { 658236884Smm zpool_prop_t prop = zpool_name_to_prop(nvpair_name(elem)); 659209962Smm 660219089Spjd if (prop == ZPOOL_PROP_CACHEFILE || 661219089Spjd prop == ZPOOL_PROP_ALTROOT || 662219089Spjd prop == ZPOOL_PROP_READONLY) 663209962Smm continue; 664209962Smm 665236884Smm if (prop == ZPOOL_PROP_VERSION || prop == ZPROP_INVAL) { 666236884Smm uint64_t ver; 667236884Smm 668236884Smm if (prop == ZPOOL_PROP_VERSION) { 669236884Smm VERIFY(nvpair_value_uint64(elem, &ver) == 0); 670236884Smm } else { 671236884Smm ASSERT(zpool_prop_feature(nvpair_name(elem))); 672236884Smm ver = SPA_VERSION_FEATURES; 673236884Smm need_sync = B_TRUE; 674236884Smm } 675236884Smm 676236884Smm /* Save time if the version is already set. */ 677236884Smm if (ver == spa_version(spa)) 678236884Smm continue; 679236884Smm 680236884Smm /* 681236884Smm * In addition to the pool directory object, we might 682236884Smm * create the pool properties object, the features for 683236884Smm * read object, the features for write object, or the 684236884Smm * feature descriptions object. 685236884Smm */ 686248571Smm error = dsl_sync_task(spa->spa_name, NULL, 687248571Smm spa_sync_version, &ver, 6); 688236884Smm if (error) 689236884Smm return (error); 690236884Smm continue; 691236884Smm } 692236884Smm 693209962Smm need_sync = B_TRUE; 694209962Smm break; 695209962Smm } 696209962Smm 697236884Smm if (need_sync) { 698248571Smm return (dsl_sync_task(spa->spa_name, NULL, spa_sync_props, 699248571Smm nvp, 6)); 700236884Smm } 701236884Smm 702236884Smm return (0); 703185029Spjd} 704185029Spjd 705185029Spjd/* 706185029Spjd * If the bootfs property value is dsobj, clear it. 707185029Spjd */ 708185029Spjdvoid 709185029Spjdspa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) 710185029Spjd{ 711185029Spjd if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { 712185029Spjd VERIFY(zap_remove(spa->spa_meta_objset, 713185029Spjd spa->spa_pool_props_object, 714185029Spjd zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); 715185029Spjd spa->spa_bootfs = 0; 716185029Spjd } 717185029Spjd} 718185029Spjd 719239620Smm/*ARGSUSED*/ 720239620Smmstatic int 721248571Smmspa_change_guid_check(void *arg, dmu_tx_t *tx) 722239620Smm{ 723248571Smm uint64_t *newguid = arg; 724248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 725239620Smm vdev_t *rvd = spa->spa_root_vdev; 726239620Smm uint64_t vdev_state; 727239620Smm 728239620Smm spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 729239620Smm vdev_state = rvd->vdev_state; 730239620Smm spa_config_exit(spa, SCL_STATE, FTAG); 731239620Smm 732239620Smm if (vdev_state != VDEV_STATE_HEALTHY) 733249195Smm return (SET_ERROR(ENXIO)); 734239620Smm 735239620Smm ASSERT3U(spa_guid(spa), !=, *newguid); 736239620Smm 737239620Smm return (0); 738239620Smm} 739239620Smm 740239620Smmstatic void 741248571Smmspa_change_guid_sync(void *arg, dmu_tx_t *tx) 742239620Smm{ 743248571Smm uint64_t *newguid = arg; 744248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 745239620Smm uint64_t oldguid; 746239620Smm vdev_t *rvd = spa->spa_root_vdev; 747239620Smm 748239620Smm oldguid = spa_guid(spa); 749239620Smm 750239620Smm spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 751239620Smm rvd->vdev_guid = *newguid; 752239620Smm rvd->vdev_guid_sum += (*newguid - oldguid); 753239620Smm vdev_config_dirty(rvd); 754239620Smm spa_config_exit(spa, SCL_STATE, FTAG); 755239620Smm 756248571Smm spa_history_log_internal(spa, "guid change", tx, "old=%llu new=%llu", 757239620Smm oldguid, *newguid); 758239620Smm} 759239620Smm 760185029Spjd/* 761228103Smm * Change the GUID for the pool. This is done so that we can later 762228103Smm * re-import a pool built from a clone of our own vdevs. We will modify 763228103Smm * the root vdev's guid, our own pool guid, and then mark all of our 764228103Smm * vdevs dirty. Note that we must make sure that all our vdevs are 765228103Smm * online when we do this, or else any vdevs that weren't present 766228103Smm * would be orphaned from our pool. We are also going to issue a 767228103Smm * sysevent to update any watchers. 768228103Smm */ 769228103Smmint 770228103Smmspa_change_guid(spa_t *spa) 771228103Smm{ 772239620Smm int error; 773239620Smm uint64_t guid; 774228103Smm 775254074Sdelphij mutex_enter(&spa->spa_vdev_top_lock); 776239620Smm mutex_enter(&spa_namespace_lock); 777239620Smm guid = spa_generate_guid(NULL); 778228103Smm 779248571Smm error = dsl_sync_task(spa->spa_name, spa_change_guid_check, 780248571Smm spa_change_guid_sync, &guid, 5); 781228103Smm 782239620Smm if (error == 0) { 783239620Smm spa_config_sync(spa, B_FALSE, B_TRUE); 784239620Smm spa_event_notify(spa, NULL, ESC_ZFS_POOL_REGUID); 785239620Smm } 786228103Smm 787239620Smm mutex_exit(&spa_namespace_lock); 788254074Sdelphij mutex_exit(&spa->spa_vdev_top_lock); 789228103Smm 790239620Smm return (error); 791228103Smm} 792228103Smm 793228103Smm/* 794185029Spjd * ========================================================================== 795168404Spjd * SPA state manipulation (open/create/destroy/import/export) 796168404Spjd * ========================================================================== 797168404Spjd */ 798168404Spjd 799168404Spjdstatic int 800168404Spjdspa_error_entry_compare(const void *a, const void *b) 801168404Spjd{ 802168404Spjd spa_error_entry_t *sa = (spa_error_entry_t *)a; 803168404Spjd spa_error_entry_t *sb = (spa_error_entry_t *)b; 804168404Spjd int ret; 805168404Spjd 806168404Spjd ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, 807168404Spjd sizeof (zbookmark_t)); 808168404Spjd 809168404Spjd if (ret < 0) 810168404Spjd return (-1); 811168404Spjd else if (ret > 0) 812168404Spjd return (1); 813168404Spjd else 814168404Spjd return (0); 815168404Spjd} 816168404Spjd 817168404Spjd/* 818168404Spjd * Utility function which retrieves copies of the current logs and 819168404Spjd * re-initializes them in the process. 820168404Spjd */ 821168404Spjdvoid 822168404Spjdspa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) 823168404Spjd{ 824168404Spjd ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); 825168404Spjd 826168404Spjd bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); 827168404Spjd bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); 828168404Spjd 829168404Spjd avl_create(&spa->spa_errlist_scrub, 830168404Spjd spa_error_entry_compare, sizeof (spa_error_entry_t), 831168404Spjd offsetof(spa_error_entry_t, se_avl)); 832168404Spjd avl_create(&spa->spa_errlist_last, 833168404Spjd spa_error_entry_compare, sizeof (spa_error_entry_t), 834168404Spjd offsetof(spa_error_entry_t, se_avl)); 835168404Spjd} 836168404Spjd 837258631Savgstatic void 838258631Savgspa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q) 839168404Spjd{ 840258631Savg const zio_taskq_info_t *ztip = &zio_taskqs[t][q]; 841258631Savg enum zti_modes mode = ztip->zti_mode; 842258631Savg uint_t value = ztip->zti_value; 843258631Savg uint_t count = ztip->zti_count; 844258631Savg spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; 845258631Savg char name[32]; 846258630Savg uint_t flags = 0; 847219089Spjd boolean_t batch = B_FALSE; 848168404Spjd 849258631Savg if (mode == ZTI_MODE_NULL) { 850258631Savg tqs->stqs_count = 0; 851258631Savg tqs->stqs_taskq = NULL; 852258631Savg return; 853258631Savg } 854168404Spjd 855258631Savg ASSERT3U(count, >, 0); 856168404Spjd 857258631Savg tqs->stqs_count = count; 858258631Savg tqs->stqs_taskq = kmem_alloc(count * sizeof (taskq_t *), KM_SLEEP); 859219089Spjd 860258632Savg switch (mode) { 861258632Savg case ZTI_MODE_FIXED: 862258632Savg ASSERT3U(value, >=, 1); 863258632Savg value = MAX(value, 1); 864258632Savg break; 865219089Spjd 866258632Savg case ZTI_MODE_BATCH: 867258632Savg batch = B_TRUE; 868258632Savg flags |= TASKQ_THREADS_CPU_PCT; 869258632Savg value = zio_taskq_batch_pct; 870258632Savg break; 871219089Spjd 872258632Savg default: 873258632Savg panic("unrecognized mode for %s_%s taskq (%u:%u) in " 874258632Savg "spa_activate()", 875258632Savg zio_type_name[t], zio_taskq_types[q], mode, value); 876258632Savg break; 877258632Savg } 878258631Savg 879258632Savg for (uint_t i = 0; i < count; i++) { 880258632Savg taskq_t *tq; 881258631Savg 882258631Savg if (count > 1) { 883258631Savg (void) snprintf(name, sizeof (name), "%s_%s_%u", 884258631Savg zio_type_name[t], zio_taskq_types[q], i); 885258631Savg } else { 886258631Savg (void) snprintf(name, sizeof (name), "%s_%s", 887258631Savg zio_type_name[t], zio_taskq_types[q]); 888258631Savg } 889258631Savg 890219089Spjd#ifdef SYSDC 891258631Savg if (zio_taskq_sysdc && spa->spa_proc != &p0) { 892258631Savg if (batch) 893258631Savg flags |= TASKQ_DC_BATCH; 894219089Spjd 895258631Savg tq = taskq_create_sysdc(name, value, 50, INT_MAX, 896258631Savg spa->spa_proc, zio_taskq_basedc, flags); 897258631Savg } else { 898258631Savg#endif 899258632Savg pri_t pri = maxclsyspri; 900258632Savg /* 901258632Savg * The write issue taskq can be extremely CPU 902258632Savg * intensive. Run it at slightly lower priority 903258632Savg * than the other taskqs. 904258632Savg */ 905258632Savg if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE) 906258632Savg pri--; 907258632Savg 908258632Savg tq = taskq_create_proc(name, value, pri, 50, 909258631Savg INT_MAX, spa->spa_proc, flags); 910258631Savg#ifdef SYSDC 911258631Savg } 912258631Savg#endif 913258631Savg 914258631Savg tqs->stqs_taskq[i] = tq; 915219089Spjd } 916219089Spjd} 917219089Spjd 918219089Spjdstatic void 919258631Savgspa_taskqs_fini(spa_t *spa, zio_type_t t, zio_taskq_type_t q) 920258631Savg{ 921258631Savg spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; 922258631Savg 923258631Savg if (tqs->stqs_taskq == NULL) { 924258631Savg ASSERT0(tqs->stqs_count); 925258631Savg return; 926258631Savg } 927258631Savg 928258631Savg for (uint_t i = 0; i < tqs->stqs_count; i++) { 929258631Savg ASSERT3P(tqs->stqs_taskq[i], !=, NULL); 930258631Savg taskq_destroy(tqs->stqs_taskq[i]); 931258631Savg } 932258631Savg 933258631Savg kmem_free(tqs->stqs_taskq, tqs->stqs_count * sizeof (taskq_t *)); 934258631Savg tqs->stqs_taskq = NULL; 935258631Savg} 936258631Savg 937258631Savg/* 938258631Savg * Dispatch a task to the appropriate taskq for the ZFS I/O type and priority. 939258631Savg * Note that a type may have multiple discrete taskqs to avoid lock contention 940258631Savg * on the taskq itself. In that case we choose which taskq at random by using 941258631Savg * the low bits of gethrtime(). 942258631Savg */ 943258631Savgvoid 944258631Savgspa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, 945258631Savg task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent) 946258631Savg{ 947258631Savg spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; 948258631Savg taskq_t *tq; 949258631Savg 950258631Savg ASSERT3P(tqs->stqs_taskq, !=, NULL); 951258631Savg ASSERT3U(tqs->stqs_count, !=, 0); 952258631Savg 953258631Savg if (tqs->stqs_count == 1) { 954258631Savg tq = tqs->stqs_taskq[0]; 955258631Savg } else { 956258631Savg tq = tqs->stqs_taskq[gethrtime() % tqs->stqs_count]; 957258631Savg } 958258631Savg 959258631Savg taskq_dispatch_ent(tq, func, arg, flags, ent); 960258631Savg} 961258631Savg 962258631Savgstatic void 963219089Spjdspa_create_zio_taskqs(spa_t *spa) 964219089Spjd{ 965185029Spjd for (int t = 0; t < ZIO_TYPES; t++) { 966185029Spjd for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { 967258631Savg spa_taskqs_init(spa, t, q); 968219089Spjd } 969219089Spjd } 970219089Spjd} 971209962Smm 972219089Spjd#ifdef _KERNEL 973219089Spjd#ifdef SPA_PROCESS 974219089Spjdstatic void 975219089Spjdspa_thread(void *arg) 976219089Spjd{ 977219089Spjd callb_cpr_t cprinfo; 978209962Smm 979219089Spjd spa_t *spa = arg; 980219089Spjd user_t *pu = PTOU(curproc); 981209962Smm 982219089Spjd CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr, 983219089Spjd spa->spa_name); 984209962Smm 985219089Spjd ASSERT(curproc != &p0); 986219089Spjd (void) snprintf(pu->u_psargs, sizeof (pu->u_psargs), 987219089Spjd "zpool-%s", spa->spa_name); 988219089Spjd (void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm)); 989211931Smm 990219089Spjd#ifdef PSRSET_BIND 991219089Spjd /* bind this thread to the requested psrset */ 992219089Spjd if (zio_taskq_psrset_bind != PS_NONE) { 993219089Spjd pool_lock(); 994219089Spjd mutex_enter(&cpu_lock); 995219089Spjd mutex_enter(&pidlock); 996219089Spjd mutex_enter(&curproc->p_lock); 997219089Spjd 998219089Spjd if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind, 999219089Spjd 0, NULL, NULL) == 0) { 1000219089Spjd curthread->t_bind_pset = zio_taskq_psrset_bind; 1001219089Spjd } else { 1002219089Spjd cmn_err(CE_WARN, 1003219089Spjd "Couldn't bind process for zfs pool \"%s\" to " 1004219089Spjd "pset %d\n", spa->spa_name, zio_taskq_psrset_bind); 1005219089Spjd } 1006219089Spjd 1007219089Spjd mutex_exit(&curproc->p_lock); 1008219089Spjd mutex_exit(&pidlock); 1009219089Spjd mutex_exit(&cpu_lock); 1010219089Spjd pool_unlock(); 1011219089Spjd } 1012219089Spjd#endif 1013219089Spjd 1014219089Spjd#ifdef SYSDC 1015219089Spjd if (zio_taskq_sysdc) { 1016219089Spjd sysdc_thread_enter(curthread, 100, 0); 1017219089Spjd } 1018219089Spjd#endif 1019219089Spjd 1020219089Spjd spa->spa_proc = curproc; 1021219089Spjd spa->spa_did = curthread->t_did; 1022219089Spjd 1023219089Spjd spa_create_zio_taskqs(spa); 1024219089Spjd 1025219089Spjd mutex_enter(&spa->spa_proc_lock); 1026219089Spjd ASSERT(spa->spa_proc_state == SPA_PROC_CREATED); 1027219089Spjd 1028219089Spjd spa->spa_proc_state = SPA_PROC_ACTIVE; 1029219089Spjd cv_broadcast(&spa->spa_proc_cv); 1030219089Spjd 1031219089Spjd CALLB_CPR_SAFE_BEGIN(&cprinfo); 1032219089Spjd while (spa->spa_proc_state == SPA_PROC_ACTIVE) 1033219089Spjd cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); 1034219089Spjd CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock); 1035219089Spjd 1036219089Spjd ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE); 1037219089Spjd spa->spa_proc_state = SPA_PROC_GONE; 1038219089Spjd spa->spa_proc = &p0; 1039219089Spjd cv_broadcast(&spa->spa_proc_cv); 1040219089Spjd CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */ 1041219089Spjd 1042219089Spjd mutex_enter(&curproc->p_lock); 1043219089Spjd lwp_exit(); 1044219089Spjd} 1045219089Spjd#endif /* SPA_PROCESS */ 1046219089Spjd#endif 1047219089Spjd 1048219089Spjd/* 1049219089Spjd * Activate an uninitialized pool. 1050219089Spjd */ 1051219089Spjdstatic void 1052219089Spjdspa_activate(spa_t *spa, int mode) 1053219089Spjd{ 1054219089Spjd ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); 1055219089Spjd 1056219089Spjd spa->spa_state = POOL_STATE_ACTIVE; 1057219089Spjd spa->spa_mode = mode; 1058219089Spjd 1059219089Spjd spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops); 1060219089Spjd spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops); 1061219089Spjd 1062219089Spjd /* Try to create a covering process */ 1063219089Spjd mutex_enter(&spa->spa_proc_lock); 1064219089Spjd ASSERT(spa->spa_proc_state == SPA_PROC_NONE); 1065219089Spjd ASSERT(spa->spa_proc == &p0); 1066219089Spjd spa->spa_did = 0; 1067219089Spjd 1068219089Spjd#ifdef SPA_PROCESS 1069219089Spjd /* Only create a process if we're going to be around a while. */ 1070219089Spjd if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) { 1071219089Spjd if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri, 1072219089Spjd NULL, 0) == 0) { 1073219089Spjd spa->spa_proc_state = SPA_PROC_CREATED; 1074219089Spjd while (spa->spa_proc_state == SPA_PROC_CREATED) { 1075219089Spjd cv_wait(&spa->spa_proc_cv, 1076219089Spjd &spa->spa_proc_lock); 1077209962Smm } 1078219089Spjd ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); 1079219089Spjd ASSERT(spa->spa_proc != &p0); 1080219089Spjd ASSERT(spa->spa_did != 0); 1081219089Spjd } else { 1082219089Spjd#ifdef _KERNEL 1083219089Spjd cmn_err(CE_WARN, 1084219089Spjd "Couldn't create process for zfs pool \"%s\"\n", 1085219089Spjd spa->spa_name); 1086219089Spjd#endif 1087185029Spjd } 1088168404Spjd } 1089219089Spjd#endif /* SPA_PROCESS */ 1090219089Spjd mutex_exit(&spa->spa_proc_lock); 1091168404Spjd 1092219089Spjd /* If we didn't create a process, we need to create our taskqs. */ 1093219089Spjd ASSERT(spa->spa_proc == &p0); 1094219089Spjd if (spa->spa_proc == &p0) { 1095219089Spjd spa_create_zio_taskqs(spa); 1096219089Spjd } 1097219089Spjd 1098240868Spjd /* 1099240868Spjd * Start TRIM thread. 1100240868Spjd */ 1101240868Spjd trim_thread_create(spa); 1102240868Spjd 1103185029Spjd list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), 1104185029Spjd offsetof(vdev_t, vdev_config_dirty_node)); 1105185029Spjd list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), 1106185029Spjd offsetof(vdev_t, vdev_state_dirty_node)); 1107168404Spjd 1108168404Spjd txg_list_create(&spa->spa_vdev_txg_list, 1109168404Spjd offsetof(struct vdev, vdev_txg_node)); 1110168404Spjd 1111168404Spjd avl_create(&spa->spa_errlist_scrub, 1112168404Spjd spa_error_entry_compare, sizeof (spa_error_entry_t), 1113168404Spjd offsetof(spa_error_entry_t, se_avl)); 1114168404Spjd avl_create(&spa->spa_errlist_last, 1115168404Spjd spa_error_entry_compare, sizeof (spa_error_entry_t), 1116168404Spjd offsetof(spa_error_entry_t, se_avl)); 1117168404Spjd} 1118168404Spjd 1119168404Spjd/* 1120168404Spjd * Opposite of spa_activate(). 1121168404Spjd */ 1122168404Spjdstatic void 1123168404Spjdspa_deactivate(spa_t *spa) 1124168404Spjd{ 1125168404Spjd ASSERT(spa->spa_sync_on == B_FALSE); 1126168404Spjd ASSERT(spa->spa_dsl_pool == NULL); 1127168404Spjd ASSERT(spa->spa_root_vdev == NULL); 1128209962Smm ASSERT(spa->spa_async_zio_root == NULL); 1129168404Spjd ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); 1130168404Spjd 1131240868Spjd /* 1132240868Spjd * Stop TRIM thread in case spa_unload() wasn't called directly 1133240868Spjd * before spa_deactivate(). 1134240868Spjd */ 1135240868Spjd trim_thread_destroy(spa); 1136240868Spjd 1137168404Spjd txg_list_destroy(&spa->spa_vdev_txg_list); 1138168404Spjd 1139185029Spjd list_destroy(&spa->spa_config_dirty_list); 1140185029Spjd list_destroy(&spa->spa_state_dirty_list); 1141168404Spjd 1142185029Spjd for (int t = 0; t < ZIO_TYPES; t++) { 1143185029Spjd for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { 1144258631Savg spa_taskqs_fini(spa, t, q); 1145185029Spjd } 1146168404Spjd } 1147168404Spjd 1148168404Spjd metaslab_class_destroy(spa->spa_normal_class); 1149168404Spjd spa->spa_normal_class = NULL; 1150168404Spjd 1151185029Spjd metaslab_class_destroy(spa->spa_log_class); 1152185029Spjd spa->spa_log_class = NULL; 1153185029Spjd 1154168404Spjd /* 1155168404Spjd * If this was part of an import or the open otherwise failed, we may 1156168404Spjd * still have errors left in the queues. Empty them just in case. 1157168404Spjd */ 1158168404Spjd spa_errlog_drain(spa); 1159168404Spjd 1160168404Spjd avl_destroy(&spa->spa_errlist_scrub); 1161168404Spjd avl_destroy(&spa->spa_errlist_last); 1162168404Spjd 1163168404Spjd spa->spa_state = POOL_STATE_UNINITIALIZED; 1164219089Spjd 1165219089Spjd mutex_enter(&spa->spa_proc_lock); 1166219089Spjd if (spa->spa_proc_state != SPA_PROC_NONE) { 1167219089Spjd ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); 1168219089Spjd spa->spa_proc_state = SPA_PROC_DEACTIVATE; 1169219089Spjd cv_broadcast(&spa->spa_proc_cv); 1170219089Spjd while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) { 1171219089Spjd ASSERT(spa->spa_proc != &p0); 1172219089Spjd cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); 1173219089Spjd } 1174219089Spjd ASSERT(spa->spa_proc_state == SPA_PROC_GONE); 1175219089Spjd spa->spa_proc_state = SPA_PROC_NONE; 1176219089Spjd } 1177219089Spjd ASSERT(spa->spa_proc == &p0); 1178219089Spjd mutex_exit(&spa->spa_proc_lock); 1179219089Spjd 1180219089Spjd#ifdef SPA_PROCESS 1181219089Spjd /* 1182219089Spjd * We want to make sure spa_thread() has actually exited the ZFS 1183219089Spjd * module, so that the module can't be unloaded out from underneath 1184219089Spjd * it. 1185219089Spjd */ 1186219089Spjd if (spa->spa_did != 0) { 1187219089Spjd thread_join(spa->spa_did); 1188219089Spjd spa->spa_did = 0; 1189219089Spjd } 1190219089Spjd#endif /* SPA_PROCESS */ 1191168404Spjd} 1192168404Spjd 1193168404Spjd/* 1194168404Spjd * Verify a pool configuration, and construct the vdev tree appropriately. This 1195168404Spjd * will create all the necessary vdevs in the appropriate layout, with each vdev 1196168404Spjd * in the CLOSED state. This will prep the pool before open/creation/import. 1197168404Spjd * All vdev validation is done by the vdev_alloc() routine. 1198168404Spjd */ 1199168404Spjdstatic int 1200168404Spjdspa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, 1201168404Spjd uint_t id, int atype) 1202168404Spjd{ 1203168404Spjd nvlist_t **child; 1204219089Spjd uint_t children; 1205168404Spjd int error; 1206168404Spjd 1207168404Spjd if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) 1208168404Spjd return (error); 1209168404Spjd 1210168404Spjd if ((*vdp)->vdev_ops->vdev_op_leaf) 1211168404Spjd return (0); 1212168404Spjd 1213185029Spjd error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1214185029Spjd &child, &children); 1215185029Spjd 1216185029Spjd if (error == ENOENT) 1217185029Spjd return (0); 1218185029Spjd 1219185029Spjd if (error) { 1220168404Spjd vdev_free(*vdp); 1221168404Spjd *vdp = NULL; 1222249195Smm return (SET_ERROR(EINVAL)); 1223168404Spjd } 1224168404Spjd 1225219089Spjd for (int c = 0; c < children; c++) { 1226168404Spjd vdev_t *vd; 1227168404Spjd if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, 1228168404Spjd atype)) != 0) { 1229168404Spjd vdev_free(*vdp); 1230168404Spjd *vdp = NULL; 1231168404Spjd return (error); 1232168404Spjd } 1233168404Spjd } 1234168404Spjd 1235168404Spjd ASSERT(*vdp != NULL); 1236168404Spjd 1237168404Spjd return (0); 1238168404Spjd} 1239168404Spjd 1240168404Spjd/* 1241168404Spjd * Opposite of spa_load(). 1242168404Spjd */ 1243168404Spjdstatic void 1244168404Spjdspa_unload(spa_t *spa) 1245168404Spjd{ 1246168404Spjd int i; 1247168404Spjd 1248185029Spjd ASSERT(MUTEX_HELD(&spa_namespace_lock)); 1249185029Spjd 1250168404Spjd /* 1251240868Spjd * Stop TRIM thread. 1252240868Spjd */ 1253240868Spjd trim_thread_destroy(spa); 1254240868Spjd 1255240868Spjd /* 1256168404Spjd * Stop async tasks. 1257168404Spjd */ 1258168404Spjd spa_async_suspend(spa); 1259168404Spjd 1260168404Spjd /* 1261168404Spjd * Stop syncing. 1262168404Spjd */ 1263168404Spjd if (spa->spa_sync_on) { 1264168404Spjd txg_sync_stop(spa->spa_dsl_pool); 1265168404Spjd spa->spa_sync_on = B_FALSE; 1266168404Spjd } 1267168404Spjd 1268168404Spjd /* 1269185029Spjd * Wait for any outstanding async I/O to complete. 1270168404Spjd */ 1271209962Smm if (spa->spa_async_zio_root != NULL) { 1272209962Smm (void) zio_wait(spa->spa_async_zio_root); 1273209962Smm spa->spa_async_zio_root = NULL; 1274209962Smm } 1275168404Spjd 1276219089Spjd bpobj_close(&spa->spa_deferred_bpobj); 1277219089Spjd 1278258717Savg spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 1279258717Savg 1280168404Spjd /* 1281258717Savg * Close all vdevs. 1282258717Savg */ 1283258717Savg if (spa->spa_root_vdev) 1284258717Savg vdev_free(spa->spa_root_vdev); 1285258717Savg ASSERT(spa->spa_root_vdev == NULL); 1286258717Savg 1287258717Savg /* 1288168404Spjd * Close the dsl pool. 1289168404Spjd */ 1290168404Spjd if (spa->spa_dsl_pool) { 1291168404Spjd dsl_pool_close(spa->spa_dsl_pool); 1292168404Spjd spa->spa_dsl_pool = NULL; 1293219089Spjd spa->spa_meta_objset = NULL; 1294168404Spjd } 1295168404Spjd 1296219089Spjd ddt_unload(spa); 1297219089Spjd 1298209962Smm 1299168404Spjd /* 1300209962Smm * Drop and purge level 2 cache 1301209962Smm */ 1302209962Smm spa_l2cache_drop(spa); 1303209962Smm 1304185029Spjd for (i = 0; i < spa->spa_spares.sav_count; i++) 1305185029Spjd vdev_free(spa->spa_spares.sav_vdevs[i]); 1306185029Spjd if (spa->spa_spares.sav_vdevs) { 1307185029Spjd kmem_free(spa->spa_spares.sav_vdevs, 1308185029Spjd spa->spa_spares.sav_count * sizeof (void *)); 1309185029Spjd spa->spa_spares.sav_vdevs = NULL; 1310168404Spjd } 1311185029Spjd if (spa->spa_spares.sav_config) { 1312185029Spjd nvlist_free(spa->spa_spares.sav_config); 1313185029Spjd spa->spa_spares.sav_config = NULL; 1314168404Spjd } 1315185029Spjd spa->spa_spares.sav_count = 0; 1316168404Spjd 1317230514Smm for (i = 0; i < spa->spa_l2cache.sav_count; i++) { 1318230514Smm vdev_clear_stats(spa->spa_l2cache.sav_vdevs[i]); 1319185029Spjd vdev_free(spa->spa_l2cache.sav_vdevs[i]); 1320230514Smm } 1321185029Spjd if (spa->spa_l2cache.sav_vdevs) { 1322185029Spjd kmem_free(spa->spa_l2cache.sav_vdevs, 1323185029Spjd spa->spa_l2cache.sav_count * sizeof (void *)); 1324185029Spjd spa->spa_l2cache.sav_vdevs = NULL; 1325185029Spjd } 1326185029Spjd if (spa->spa_l2cache.sav_config) { 1327185029Spjd nvlist_free(spa->spa_l2cache.sav_config); 1328185029Spjd spa->spa_l2cache.sav_config = NULL; 1329185029Spjd } 1330185029Spjd spa->spa_l2cache.sav_count = 0; 1331185029Spjd 1332168404Spjd spa->spa_async_suspended = 0; 1333209962Smm 1334228103Smm if (spa->spa_comment != NULL) { 1335228103Smm spa_strfree(spa->spa_comment); 1336228103Smm spa->spa_comment = NULL; 1337228103Smm } 1338228103Smm 1339209962Smm spa_config_exit(spa, SCL_ALL, FTAG); 1340168404Spjd} 1341168404Spjd 1342168404Spjd/* 1343168404Spjd * Load (or re-load) the current list of vdevs describing the active spares for 1344168404Spjd * this pool. When this is called, we have some form of basic information in 1345185029Spjd * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and 1346185029Spjd * then re-generate a more complete list including status information. 1347168404Spjd */ 1348168404Spjdstatic void 1349168404Spjdspa_load_spares(spa_t *spa) 1350168404Spjd{ 1351168404Spjd nvlist_t **spares; 1352168404Spjd uint_t nspares; 1353168404Spjd int i; 1354168404Spjd vdev_t *vd, *tvd; 1355168404Spjd 1356185029Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 1357185029Spjd 1358168404Spjd /* 1359168404Spjd * First, close and free any existing spare vdevs. 1360168404Spjd */ 1361185029Spjd for (i = 0; i < spa->spa_spares.sav_count; i++) { 1362185029Spjd vd = spa->spa_spares.sav_vdevs[i]; 1363168404Spjd 1364168404Spjd /* Undo the call to spa_activate() below */ 1365185029Spjd if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, 1366185029Spjd B_FALSE)) != NULL && tvd->vdev_isspare) 1367168404Spjd spa_spare_remove(tvd); 1368168404Spjd vdev_close(vd); 1369168404Spjd vdev_free(vd); 1370168404Spjd } 1371168404Spjd 1372185029Spjd if (spa->spa_spares.sav_vdevs) 1373185029Spjd kmem_free(spa->spa_spares.sav_vdevs, 1374185029Spjd spa->spa_spares.sav_count * sizeof (void *)); 1375168404Spjd 1376185029Spjd if (spa->spa_spares.sav_config == NULL) 1377168404Spjd nspares = 0; 1378168404Spjd else 1379185029Spjd VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, 1380168404Spjd ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); 1381168404Spjd 1382185029Spjd spa->spa_spares.sav_count = (int)nspares; 1383185029Spjd spa->spa_spares.sav_vdevs = NULL; 1384168404Spjd 1385168404Spjd if (nspares == 0) 1386168404Spjd return; 1387168404Spjd 1388168404Spjd /* 1389168404Spjd * Construct the array of vdevs, opening them to get status in the 1390168404Spjd * process. For each spare, there is potentially two different vdev_t 1391168404Spjd * structures associated with it: one in the list of spares (used only 1392168404Spjd * for basic validation purposes) and one in the active vdev 1393168404Spjd * configuration (if it's spared in). During this phase we open and 1394168404Spjd * validate each vdev on the spare list. If the vdev also exists in the 1395168404Spjd * active configuration, then we also mark this vdev as an active spare. 1396168404Spjd */ 1397185029Spjd spa->spa_spares.sav_vdevs = kmem_alloc(nspares * sizeof (void *), 1398185029Spjd KM_SLEEP); 1399185029Spjd for (i = 0; i < spa->spa_spares.sav_count; i++) { 1400168404Spjd VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, 1401168404Spjd VDEV_ALLOC_SPARE) == 0); 1402168404Spjd ASSERT(vd != NULL); 1403168404Spjd 1404185029Spjd spa->spa_spares.sav_vdevs[i] = vd; 1405168404Spjd 1406185029Spjd if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, 1407185029Spjd B_FALSE)) != NULL) { 1408168404Spjd if (!tvd->vdev_isspare) 1409168404Spjd spa_spare_add(tvd); 1410168404Spjd 1411168404Spjd /* 1412168404Spjd * We only mark the spare active if we were successfully 1413168404Spjd * able to load the vdev. Otherwise, importing a pool 1414168404Spjd * with a bad active spare would result in strange 1415168404Spjd * behavior, because multiple pool would think the spare 1416168404Spjd * is actively in use. 1417168404Spjd * 1418168404Spjd * There is a vulnerability here to an equally bizarre 1419168404Spjd * circumstance, where a dead active spare is later 1420168404Spjd * brought back to life (onlined or otherwise). Given 1421168404Spjd * the rarity of this scenario, and the extra complexity 1422168404Spjd * it adds, we ignore the possibility. 1423168404Spjd */ 1424168404Spjd if (!vdev_is_dead(tvd)) 1425168404Spjd spa_spare_activate(tvd); 1426168404Spjd } 1427168404Spjd 1428185029Spjd vd->vdev_top = vd; 1429209962Smm vd->vdev_aux = &spa->spa_spares; 1430185029Spjd 1431168404Spjd if (vdev_open(vd) != 0) 1432168404Spjd continue; 1433168404Spjd 1434185029Spjd if (vdev_validate_aux(vd) == 0) 1435185029Spjd spa_spare_add(vd); 1436168404Spjd } 1437168404Spjd 1438168404Spjd /* 1439168404Spjd * Recompute the stashed list of spares, with status information 1440168404Spjd * this time. 1441168404Spjd */ 1442185029Spjd VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, 1443168404Spjd DATA_TYPE_NVLIST_ARRAY) == 0); 1444168404Spjd 1445185029Spjd spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), 1446185029Spjd KM_SLEEP); 1447185029Spjd for (i = 0; i < spa->spa_spares.sav_count; i++) 1448185029Spjd spares[i] = vdev_config_generate(spa, 1449219089Spjd spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE); 1450185029Spjd VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, 1451185029Spjd ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); 1452185029Spjd for (i = 0; i < spa->spa_spares.sav_count; i++) 1453168404Spjd nvlist_free(spares[i]); 1454185029Spjd kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); 1455168404Spjd} 1456168404Spjd 1457185029Spjd/* 1458185029Spjd * Load (or re-load) the current list of vdevs describing the active l2cache for 1459185029Spjd * this pool. When this is called, we have some form of basic information in 1460185029Spjd * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and 1461185029Spjd * then re-generate a more complete list including status information. 1462185029Spjd * Devices which are already active have their details maintained, and are 1463185029Spjd * not re-opened. 1464185029Spjd */ 1465185029Spjdstatic void 1466185029Spjdspa_load_l2cache(spa_t *spa) 1467185029Spjd{ 1468185029Spjd nvlist_t **l2cache; 1469185029Spjd uint_t nl2cache; 1470185029Spjd int i, j, oldnvdevs; 1471219089Spjd uint64_t guid; 1472185029Spjd vdev_t *vd, **oldvdevs, **newvdevs; 1473185029Spjd spa_aux_vdev_t *sav = &spa->spa_l2cache; 1474185029Spjd 1475185029Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 1476185029Spjd 1477185029Spjd if (sav->sav_config != NULL) { 1478185029Spjd VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, 1479185029Spjd ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); 1480185029Spjd newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); 1481185029Spjd } else { 1482185029Spjd nl2cache = 0; 1483247187Smm newvdevs = NULL; 1484185029Spjd } 1485185029Spjd 1486185029Spjd oldvdevs = sav->sav_vdevs; 1487185029Spjd oldnvdevs = sav->sav_count; 1488185029Spjd sav->sav_vdevs = NULL; 1489185029Spjd sav->sav_count = 0; 1490185029Spjd 1491185029Spjd /* 1492185029Spjd * Process new nvlist of vdevs. 1493185029Spjd */ 1494185029Spjd for (i = 0; i < nl2cache; i++) { 1495185029Spjd VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, 1496185029Spjd &guid) == 0); 1497185029Spjd 1498185029Spjd newvdevs[i] = NULL; 1499185029Spjd for (j = 0; j < oldnvdevs; j++) { 1500185029Spjd vd = oldvdevs[j]; 1501185029Spjd if (vd != NULL && guid == vd->vdev_guid) { 1502185029Spjd /* 1503185029Spjd * Retain previous vdev for add/remove ops. 1504185029Spjd */ 1505185029Spjd newvdevs[i] = vd; 1506185029Spjd oldvdevs[j] = NULL; 1507185029Spjd break; 1508185029Spjd } 1509185029Spjd } 1510185029Spjd 1511185029Spjd if (newvdevs[i] == NULL) { 1512185029Spjd /* 1513185029Spjd * Create new vdev 1514185029Spjd */ 1515185029Spjd VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, 1516185029Spjd VDEV_ALLOC_L2CACHE) == 0); 1517185029Spjd ASSERT(vd != NULL); 1518185029Spjd newvdevs[i] = vd; 1519185029Spjd 1520185029Spjd /* 1521185029Spjd * Commit this vdev as an l2cache device, 1522185029Spjd * even if it fails to open. 1523185029Spjd */ 1524185029Spjd spa_l2cache_add(vd); 1525185029Spjd 1526185029Spjd vd->vdev_top = vd; 1527185029Spjd vd->vdev_aux = sav; 1528185029Spjd 1529185029Spjd spa_l2cache_activate(vd); 1530185029Spjd 1531185029Spjd if (vdev_open(vd) != 0) 1532185029Spjd continue; 1533185029Spjd 1534185029Spjd (void) vdev_validate_aux(vd); 1535185029Spjd 1536219089Spjd if (!vdev_is_dead(vd)) 1537219089Spjd l2arc_add_vdev(spa, vd); 1538185029Spjd } 1539185029Spjd } 1540185029Spjd 1541185029Spjd /* 1542185029Spjd * Purge vdevs that were dropped 1543185029Spjd */ 1544185029Spjd for (i = 0; i < oldnvdevs; i++) { 1545185029Spjd uint64_t pool; 1546185029Spjd 1547185029Spjd vd = oldvdevs[i]; 1548185029Spjd if (vd != NULL) { 1549230514Smm ASSERT(vd->vdev_isl2cache); 1550230514Smm 1551209962Smm if (spa_l2cache_exists(vd->vdev_guid, &pool) && 1552209962Smm pool != 0ULL && l2arc_vdev_present(vd)) 1553185029Spjd l2arc_remove_vdev(vd); 1554230514Smm vdev_clear_stats(vd); 1555230514Smm vdev_free(vd); 1556185029Spjd } 1557185029Spjd } 1558185029Spjd 1559185029Spjd if (oldvdevs) 1560185029Spjd kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); 1561185029Spjd 1562185029Spjd if (sav->sav_config == NULL) 1563185029Spjd goto out; 1564185029Spjd 1565185029Spjd sav->sav_vdevs = newvdevs; 1566185029Spjd sav->sav_count = (int)nl2cache; 1567185029Spjd 1568185029Spjd /* 1569185029Spjd * Recompute the stashed list of l2cache devices, with status 1570185029Spjd * information this time. 1571185029Spjd */ 1572185029Spjd VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, 1573185029Spjd DATA_TYPE_NVLIST_ARRAY) == 0); 1574185029Spjd 1575185029Spjd l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); 1576185029Spjd for (i = 0; i < sav->sav_count; i++) 1577185029Spjd l2cache[i] = vdev_config_generate(spa, 1578219089Spjd sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); 1579185029Spjd VERIFY(nvlist_add_nvlist_array(sav->sav_config, 1580185029Spjd ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); 1581185029Spjdout: 1582185029Spjd for (i = 0; i < sav->sav_count; i++) 1583185029Spjd nvlist_free(l2cache[i]); 1584185029Spjd if (sav->sav_count) 1585185029Spjd kmem_free(l2cache, sav->sav_count * sizeof (void *)); 1586185029Spjd} 1587185029Spjd 1588168404Spjdstatic int 1589168404Spjdload_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) 1590168404Spjd{ 1591168404Spjd dmu_buf_t *db; 1592168404Spjd char *packed = NULL; 1593168404Spjd size_t nvsize = 0; 1594168404Spjd int error; 1595168404Spjd *value = NULL; 1596168404Spjd 1597262676Sdelphij error = dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db); 1598262676Sdelphij if (error != 0) 1599262676Sdelphij return (error); 1600168404Spjd nvsize = *(uint64_t *)db->db_data; 1601168404Spjd dmu_buf_rele(db, FTAG); 1602168404Spjd 1603168404Spjd packed = kmem_alloc(nvsize, KM_SLEEP); 1604209962Smm error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed, 1605209962Smm DMU_READ_PREFETCH); 1606168404Spjd if (error == 0) 1607168404Spjd error = nvlist_unpack(packed, nvsize, value, 0); 1608168404Spjd kmem_free(packed, nvsize); 1609168404Spjd 1610168404Spjd return (error); 1611168404Spjd} 1612168404Spjd 1613168404Spjd/* 1614185029Spjd * Checks to see if the given vdev could not be opened, in which case we post a 1615185029Spjd * sysevent to notify the autoreplace code that the device has been removed. 1616185029Spjd */ 1617185029Spjdstatic void 1618185029Spjdspa_check_removed(vdev_t *vd) 1619185029Spjd{ 1620219089Spjd for (int c = 0; c < vd->vdev_children; c++) 1621185029Spjd spa_check_removed(vd->vdev_child[c]); 1622185029Spjd 1623249188Smm if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd) && 1624249188Smm !vd->vdev_ishole) { 1625185029Spjd zfs_post_autoreplace(vd->vdev_spa, vd); 1626185029Spjd spa_event_notify(vd->vdev_spa, vd, ESC_ZFS_VDEV_CHECK); 1627185029Spjd } 1628185029Spjd} 1629185029Spjd 1630185029Spjd/* 1631219089Spjd * Validate the current config against the MOS config 1632213197Smm */ 1633219089Spjdstatic boolean_t 1634219089Spjdspa_config_valid(spa_t *spa, nvlist_t *config) 1635213197Smm{ 1636219089Spjd vdev_t *mrvd, *rvd = spa->spa_root_vdev; 1637219089Spjd nvlist_t *nv; 1638213197Smm 1639219089Spjd VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nv) == 0); 1640213197Smm 1641219089Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 1642219089Spjd VERIFY(spa_config_parse(spa, &mrvd, nv, NULL, 0, VDEV_ALLOC_LOAD) == 0); 1643219089Spjd 1644219089Spjd ASSERT3U(rvd->vdev_children, ==, mrvd->vdev_children); 1645219089Spjd 1646219089Spjd /* 1647219089Spjd * If we're doing a normal import, then build up any additional 1648219089Spjd * diagnostic information about missing devices in this config. 1649219089Spjd * We'll pass this up to the user for further processing. 1650219089Spjd */ 1651219089Spjd if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) { 1652219089Spjd nvlist_t **child, *nv; 1653219089Spjd uint64_t idx = 0; 1654219089Spjd 1655219089Spjd child = kmem_alloc(rvd->vdev_children * sizeof (nvlist_t **), 1656219089Spjd KM_SLEEP); 1657219089Spjd VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1658219089Spjd 1659219089Spjd for (int c = 0; c < rvd->vdev_children; c++) { 1660219089Spjd vdev_t *tvd = rvd->vdev_child[c]; 1661219089Spjd vdev_t *mtvd = mrvd->vdev_child[c]; 1662219089Spjd 1663219089Spjd if (tvd->vdev_ops == &vdev_missing_ops && 1664219089Spjd mtvd->vdev_ops != &vdev_missing_ops && 1665219089Spjd mtvd->vdev_islog) 1666219089Spjd child[idx++] = vdev_config_generate(spa, mtvd, 1667219089Spjd B_FALSE, 0); 1668219089Spjd } 1669219089Spjd 1670219089Spjd if (idx) { 1671219089Spjd VERIFY(nvlist_add_nvlist_array(nv, 1672219089Spjd ZPOOL_CONFIG_CHILDREN, child, idx) == 0); 1673219089Spjd VERIFY(nvlist_add_nvlist(spa->spa_load_info, 1674219089Spjd ZPOOL_CONFIG_MISSING_DEVICES, nv) == 0); 1675219089Spjd 1676219089Spjd for (int i = 0; i < idx; i++) 1677219089Spjd nvlist_free(child[i]); 1678219089Spjd } 1679219089Spjd nvlist_free(nv); 1680219089Spjd kmem_free(child, rvd->vdev_children * sizeof (char **)); 1681219089Spjd } 1682219089Spjd 1683219089Spjd /* 1684219089Spjd * Compare the root vdev tree with the information we have 1685219089Spjd * from the MOS config (mrvd). Check each top-level vdev 1686219089Spjd * with the corresponding MOS config top-level (mtvd). 1687219089Spjd */ 1688219089Spjd for (int c = 0; c < rvd->vdev_children; c++) { 1689213197Smm vdev_t *tvd = rvd->vdev_child[c]; 1690219089Spjd vdev_t *mtvd = mrvd->vdev_child[c]; 1691213197Smm 1692219089Spjd /* 1693219089Spjd * Resolve any "missing" vdevs in the current configuration. 1694219089Spjd * If we find that the MOS config has more accurate information 1695219089Spjd * about the top-level vdev then use that vdev instead. 1696219089Spjd */ 1697219089Spjd if (tvd->vdev_ops == &vdev_missing_ops && 1698219089Spjd mtvd->vdev_ops != &vdev_missing_ops) { 1699219089Spjd 1700219089Spjd if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) 1701219089Spjd continue; 1702219089Spjd 1703219089Spjd /* 1704219089Spjd * Device specific actions. 1705219089Spjd */ 1706219089Spjd if (mtvd->vdev_islog) { 1707219089Spjd spa_set_log_state(spa, SPA_LOG_CLEAR); 1708219089Spjd } else { 1709219089Spjd /* 1710219089Spjd * XXX - once we have 'readonly' pool 1711219089Spjd * support we should be able to handle 1712219089Spjd * missing data devices by transitioning 1713219089Spjd * the pool to readonly. 1714219089Spjd */ 1715219089Spjd continue; 1716219089Spjd } 1717219089Spjd 1718219089Spjd /* 1719219089Spjd * Swap the missing vdev with the data we were 1720219089Spjd * able to obtain from the MOS config. 1721219089Spjd */ 1722219089Spjd vdev_remove_child(rvd, tvd); 1723219089Spjd vdev_remove_child(mrvd, mtvd); 1724219089Spjd 1725219089Spjd vdev_add_child(rvd, mtvd); 1726219089Spjd vdev_add_child(mrvd, tvd); 1727219089Spjd 1728219089Spjd spa_config_exit(spa, SCL_ALL, FTAG); 1729219089Spjd vdev_load(mtvd); 1730219089Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 1731219089Spjd 1732219089Spjd vdev_reopen(rvd); 1733219089Spjd } else if (mtvd->vdev_islog) { 1734219089Spjd /* 1735219089Spjd * Load the slog device's state from the MOS config 1736219089Spjd * since it's possible that the label does not 1737219089Spjd * contain the most up-to-date information. 1738219089Spjd */ 1739219089Spjd vdev_load_log_state(tvd, mtvd); 1740219089Spjd vdev_reopen(tvd); 1741219089Spjd } 1742213197Smm } 1743219089Spjd vdev_free(mrvd); 1744219089Spjd spa_config_exit(spa, SCL_ALL, FTAG); 1745219089Spjd 1746219089Spjd /* 1747219089Spjd * Ensure we were able to validate the config. 1748219089Spjd */ 1749219089Spjd return (rvd->vdev_guid_sum == spa->spa_uberblock.ub_guid_sum); 1750213197Smm} 1751213197Smm 1752213197Smm/* 1753185029Spjd * Check for missing log devices 1754185029Spjd */ 1755248571Smmstatic boolean_t 1756185029Spjdspa_check_logs(spa_t *spa) 1757185029Spjd{ 1758248571Smm boolean_t rv = B_FALSE; 1759248571Smm 1760185029Spjd switch (spa->spa_log_state) { 1761185029Spjd case SPA_LOG_MISSING: 1762185029Spjd /* need to recheck in case slog has been restored */ 1763185029Spjd case SPA_LOG_UNKNOWN: 1764248571Smm rv = (dmu_objset_find(spa->spa_name, zil_check_log_chain, 1765248571Smm NULL, DS_FIND_CHILDREN) != 0); 1766248571Smm if (rv) 1767219089Spjd spa_set_log_state(spa, SPA_LOG_MISSING); 1768185029Spjd break; 1769185029Spjd } 1770248571Smm return (rv); 1771185029Spjd} 1772185029Spjd 1773219089Spjdstatic boolean_t 1774219089Spjdspa_passivate_log(spa_t *spa) 1775219089Spjd{ 1776219089Spjd vdev_t *rvd = spa->spa_root_vdev; 1777219089Spjd boolean_t slog_found = B_FALSE; 1778219089Spjd 1779219089Spjd ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); 1780219089Spjd 1781219089Spjd if (!spa_has_slogs(spa)) 1782219089Spjd return (B_FALSE); 1783219089Spjd 1784219089Spjd for (int c = 0; c < rvd->vdev_children; c++) { 1785219089Spjd vdev_t *tvd = rvd->vdev_child[c]; 1786219089Spjd metaslab_group_t *mg = tvd->vdev_mg; 1787219089Spjd 1788219089Spjd if (tvd->vdev_islog) { 1789219089Spjd metaslab_group_passivate(mg); 1790219089Spjd slog_found = B_TRUE; 1791219089Spjd } 1792219089Spjd } 1793219089Spjd 1794219089Spjd return (slog_found); 1795219089Spjd} 1796219089Spjd 1797219089Spjdstatic void 1798219089Spjdspa_activate_log(spa_t *spa) 1799219089Spjd{ 1800219089Spjd vdev_t *rvd = spa->spa_root_vdev; 1801219089Spjd 1802219089Spjd ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); 1803219089Spjd 1804219089Spjd for (int c = 0; c < rvd->vdev_children; c++) { 1805219089Spjd vdev_t *tvd = rvd->vdev_child[c]; 1806219089Spjd metaslab_group_t *mg = tvd->vdev_mg; 1807219089Spjd 1808219089Spjd if (tvd->vdev_islog) 1809219089Spjd metaslab_group_activate(mg); 1810219089Spjd } 1811219089Spjd} 1812219089Spjd 1813219089Spjdint 1814219089Spjdspa_offline_log(spa_t *spa) 1815219089Spjd{ 1816248571Smm int error; 1817219089Spjd 1818248571Smm error = dmu_objset_find(spa_name(spa), zil_vdev_offline, 1819248571Smm NULL, DS_FIND_CHILDREN); 1820248571Smm if (error == 0) { 1821219089Spjd /* 1822219089Spjd * We successfully offlined the log device, sync out the 1823219089Spjd * current txg so that the "stubby" block can be removed 1824219089Spjd * by zil_sync(). 1825219089Spjd */ 1826219089Spjd txg_wait_synced(spa->spa_dsl_pool, 0); 1827219089Spjd } 1828219089Spjd return (error); 1829219089Spjd} 1830219089Spjd 1831219089Spjdstatic void 1832219089Spjdspa_aux_check_removed(spa_aux_vdev_t *sav) 1833219089Spjd{ 1834219089Spjd int i; 1835219089Spjd 1836219089Spjd for (i = 0; i < sav->sav_count; i++) 1837219089Spjd spa_check_removed(sav->sav_vdevs[i]); 1838219089Spjd} 1839219089Spjd 1840219089Spjdvoid 1841219089Spjdspa_claim_notify(zio_t *zio) 1842219089Spjd{ 1843219089Spjd spa_t *spa = zio->io_spa; 1844219089Spjd 1845219089Spjd if (zio->io_error) 1846219089Spjd return; 1847219089Spjd 1848219089Spjd mutex_enter(&spa->spa_props_lock); /* any mutex will do */ 1849219089Spjd if (spa->spa_claim_max_txg < zio->io_bp->blk_birth) 1850219089Spjd spa->spa_claim_max_txg = zio->io_bp->blk_birth; 1851219089Spjd mutex_exit(&spa->spa_props_lock); 1852219089Spjd} 1853219089Spjd 1854219089Spjdtypedef struct spa_load_error { 1855219089Spjd uint64_t sle_meta_count; 1856219089Spjd uint64_t sle_data_count; 1857219089Spjd} spa_load_error_t; 1858219089Spjd 1859219089Spjdstatic void 1860219089Spjdspa_load_verify_done(zio_t *zio) 1861219089Spjd{ 1862219089Spjd blkptr_t *bp = zio->io_bp; 1863219089Spjd spa_load_error_t *sle = zio->io_private; 1864219089Spjd dmu_object_type_t type = BP_GET_TYPE(bp); 1865219089Spjd int error = zio->io_error; 1866219089Spjd 1867219089Spjd if (error) { 1868236884Smm if ((BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)) && 1869219089Spjd type != DMU_OT_INTENT_LOG) 1870219089Spjd atomic_add_64(&sle->sle_meta_count, 1); 1871219089Spjd else 1872219089Spjd atomic_add_64(&sle->sle_data_count, 1); 1873219089Spjd } 1874219089Spjd zio_data_buf_free(zio->io_data, zio->io_size); 1875219089Spjd} 1876219089Spjd 1877219089Spjd/*ARGSUSED*/ 1878219089Spjdstatic int 1879219089Spjdspa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, 1880246666Smm const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg) 1881219089Spjd{ 1882260150Sdelphij if (!BP_IS_HOLE(bp)) { 1883219089Spjd zio_t *rio = arg; 1884219089Spjd size_t size = BP_GET_PSIZE(bp); 1885219089Spjd void *data = zio_data_buf_alloc(size); 1886219089Spjd 1887219089Spjd zio_nowait(zio_read(rio, spa, bp, data, size, 1888219089Spjd spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB, 1889219089Spjd ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL | 1890219089Spjd ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb)); 1891219089Spjd } 1892219089Spjd return (0); 1893219089Spjd} 1894219089Spjd 1895219089Spjdstatic int 1896219089Spjdspa_load_verify(spa_t *spa) 1897219089Spjd{ 1898219089Spjd zio_t *rio; 1899219089Spjd spa_load_error_t sle = { 0 }; 1900219089Spjd zpool_rewind_policy_t policy; 1901219089Spjd boolean_t verify_ok = B_FALSE; 1902219089Spjd int error; 1903219089Spjd 1904219089Spjd zpool_get_rewind_policy(spa->spa_config, &policy); 1905219089Spjd 1906219089Spjd if (policy.zrp_request & ZPOOL_NEVER_REWIND) 1907219089Spjd return (0); 1908219089Spjd 1909219089Spjd rio = zio_root(spa, NULL, &sle, 1910219089Spjd ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); 1911219089Spjd 1912219089Spjd error = traverse_pool(spa, spa->spa_verify_min_txg, 1913219089Spjd TRAVERSE_PRE | TRAVERSE_PREFETCH, spa_load_verify_cb, rio); 1914219089Spjd 1915219089Spjd (void) zio_wait(rio); 1916219089Spjd 1917219089Spjd spa->spa_load_meta_errors = sle.sle_meta_count; 1918219089Spjd spa->spa_load_data_errors = sle.sle_data_count; 1919219089Spjd 1920219089Spjd if (!error && sle.sle_meta_count <= policy.zrp_maxmeta && 1921219089Spjd sle.sle_data_count <= policy.zrp_maxdata) { 1922219089Spjd int64_t loss = 0; 1923219089Spjd 1924219089Spjd verify_ok = B_TRUE; 1925219089Spjd spa->spa_load_txg = spa->spa_uberblock.ub_txg; 1926219089Spjd spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp; 1927219089Spjd 1928219089Spjd loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts; 1929219089Spjd VERIFY(nvlist_add_uint64(spa->spa_load_info, 1930219089Spjd ZPOOL_CONFIG_LOAD_TIME, spa->spa_load_txg_ts) == 0); 1931219089Spjd VERIFY(nvlist_add_int64(spa->spa_load_info, 1932219089Spjd ZPOOL_CONFIG_REWIND_TIME, loss) == 0); 1933219089Spjd VERIFY(nvlist_add_uint64(spa->spa_load_info, 1934219089Spjd ZPOOL_CONFIG_LOAD_DATA_ERRORS, sle.sle_data_count) == 0); 1935219089Spjd } else { 1936219089Spjd spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; 1937219089Spjd } 1938219089Spjd 1939219089Spjd if (error) { 1940219089Spjd if (error != ENXIO && error != EIO) 1941249195Smm error = SET_ERROR(EIO); 1942219089Spjd return (error); 1943219089Spjd } 1944219089Spjd 1945219089Spjd return (verify_ok ? 0 : EIO); 1946219089Spjd} 1947219089Spjd 1948185029Spjd/* 1949219089Spjd * Find a value in the pool props object. 1950168404Spjd */ 1951219089Spjdstatic void 1952219089Spjdspa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val) 1953219089Spjd{ 1954219089Spjd (void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object, 1955219089Spjd zpool_prop_to_name(prop), sizeof (uint64_t), 1, val); 1956219089Spjd} 1957219089Spjd 1958219089Spjd/* 1959219089Spjd * Find a value in the pool directory object. 1960219089Spjd */ 1961168404Spjdstatic int 1962219089Spjdspa_dir_prop(spa_t *spa, const char *name, uint64_t *val) 1963168404Spjd{ 1964219089Spjd return (zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, 1965219089Spjd name, sizeof (uint64_t), 1, val)); 1966219089Spjd} 1967168404Spjd 1968219089Spjdstatic int 1969219089Spjdspa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err) 1970219089Spjd{ 1971219089Spjd vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux); 1972219089Spjd return (err); 1973219089Spjd} 1974219089Spjd 1975219089Spjd/* 1976219089Spjd * Fix up config after a partly-completed split. This is done with the 1977219089Spjd * ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off 1978219089Spjd * pool have that entry in their config, but only the splitting one contains 1979219089Spjd * a list of all the guids of the vdevs that are being split off. 1980219089Spjd * 1981219089Spjd * This function determines what to do with that list: either rejoin 1982219089Spjd * all the disks to the pool, or complete the splitting process. To attempt 1983219089Spjd * the rejoin, each disk that is offlined is marked online again, and 1984219089Spjd * we do a reopen() call. If the vdev label for every disk that was 1985219089Spjd * marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL) 1986219089Spjd * then we call vdev_split() on each disk, and complete the split. 1987219089Spjd * 1988219089Spjd * Otherwise we leave the config alone, with all the vdevs in place in 1989219089Spjd * the original pool. 1990219089Spjd */ 1991219089Spjdstatic void 1992219089Spjdspa_try_repair(spa_t *spa, nvlist_t *config) 1993219089Spjd{ 1994219089Spjd uint_t extracted; 1995219089Spjd uint64_t *glist; 1996219089Spjd uint_t i, gcount; 1997219089Spjd nvlist_t *nvl; 1998219089Spjd vdev_t **vd; 1999219089Spjd boolean_t attempt_reopen; 2000219089Spjd 2001219089Spjd if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0) 2002219089Spjd return; 2003219089Spjd 2004219089Spjd /* check that the config is complete */ 2005219089Spjd if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, 2006219089Spjd &glist, &gcount) != 0) 2007219089Spjd return; 2008219089Spjd 2009219089Spjd vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_SLEEP); 2010219089Spjd 2011219089Spjd /* attempt to online all the vdevs & validate */ 2012219089Spjd attempt_reopen = B_TRUE; 2013219089Spjd for (i = 0; i < gcount; i++) { 2014219089Spjd if (glist[i] == 0) /* vdev is hole */ 2015219089Spjd continue; 2016219089Spjd 2017219089Spjd vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE); 2018219089Spjd if (vd[i] == NULL) { 2019219089Spjd /* 2020219089Spjd * Don't bother attempting to reopen the disks; 2021219089Spjd * just do the split. 2022219089Spjd */ 2023219089Spjd attempt_reopen = B_FALSE; 2024219089Spjd } else { 2025219089Spjd /* attempt to re-online it */ 2026219089Spjd vd[i]->vdev_offline = B_FALSE; 2027219089Spjd } 2028219089Spjd } 2029219089Spjd 2030219089Spjd if (attempt_reopen) { 2031219089Spjd vdev_reopen(spa->spa_root_vdev); 2032219089Spjd 2033219089Spjd /* check each device to see what state it's in */ 2034219089Spjd for (extracted = 0, i = 0; i < gcount; i++) { 2035219089Spjd if (vd[i] != NULL && 2036219089Spjd vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL) 2037219089Spjd break; 2038219089Spjd ++extracted; 2039219089Spjd } 2040219089Spjd } 2041219089Spjd 2042209962Smm /* 2043219089Spjd * If every disk has been moved to the new pool, or if we never 2044219089Spjd * even attempted to look at them, then we split them off for 2045219089Spjd * good. 2046209962Smm */ 2047219089Spjd if (!attempt_reopen || gcount == extracted) { 2048219089Spjd for (i = 0; i < gcount; i++) 2049219089Spjd if (vd[i] != NULL) 2050219089Spjd vdev_split(vd[i]); 2051219089Spjd vdev_reopen(spa->spa_root_vdev); 2052219089Spjd } 2053209962Smm 2054219089Spjd kmem_free(vd, gcount * sizeof (vdev_t *)); 2055219089Spjd} 2056185029Spjd 2057219089Spjdstatic int 2058219089Spjdspa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type, 2059219089Spjd boolean_t mosconfig) 2060219089Spjd{ 2061219089Spjd nvlist_t *config = spa->spa_config; 2062219089Spjd char *ereport = FM_EREPORT_ZFS_POOL; 2063228103Smm char *comment; 2064219089Spjd int error; 2065219089Spjd uint64_t pool_guid; 2066219089Spjd nvlist_t *nvl; 2067168404Spjd 2068219089Spjd if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) 2069249195Smm return (SET_ERROR(EINVAL)); 2070168404Spjd 2071228103Smm ASSERT(spa->spa_comment == NULL); 2072228103Smm if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0) 2073228103Smm spa->spa_comment = spa_strdup(comment); 2074228103Smm 2075168404Spjd /* 2076168404Spjd * Versioning wasn't explicitly added to the label until later, so if 2077168404Spjd * it's not present treat it as the initial version. 2078168404Spjd */ 2079219089Spjd if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 2080219089Spjd &spa->spa_ubsync.ub_version) != 0) 2081219089Spjd spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; 2082168404Spjd 2083168404Spjd (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, 2084168404Spjd &spa->spa_config_txg); 2085168404Spjd 2086168404Spjd if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && 2087168404Spjd spa_guid_exists(pool_guid, 0)) { 2088249195Smm error = SET_ERROR(EEXIST); 2089219089Spjd } else { 2090228103Smm spa->spa_config_guid = pool_guid; 2091219089Spjd 2092219089Spjd if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, 2093219089Spjd &nvl) == 0) { 2094219089Spjd VERIFY(nvlist_dup(nvl, &spa->spa_config_splitting, 2095219089Spjd KM_SLEEP) == 0); 2096219089Spjd } 2097219089Spjd 2098236884Smm nvlist_free(spa->spa_load_info); 2099236884Smm spa->spa_load_info = fnvlist_alloc(); 2100236884Smm 2101219089Spjd gethrestime(&spa->spa_loaded_ts); 2102219089Spjd error = spa_load_impl(spa, pool_guid, config, state, type, 2103219089Spjd mosconfig, &ereport); 2104168404Spjd } 2105168404Spjd 2106219089Spjd spa->spa_minref = refcount_count(&spa->spa_refcount); 2107219089Spjd if (error) { 2108219089Spjd if (error != EEXIST) { 2109219089Spjd spa->spa_loaded_ts.tv_sec = 0; 2110219089Spjd spa->spa_loaded_ts.tv_nsec = 0; 2111219089Spjd } 2112219089Spjd if (error != EBADF) { 2113219089Spjd zfs_ereport_post(ereport, spa, NULL, NULL, 0, 0); 2114219089Spjd } 2115219089Spjd } 2116219089Spjd spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE; 2117219089Spjd spa->spa_ena = 0; 2118168404Spjd 2119219089Spjd return (error); 2120219089Spjd} 2121219089Spjd 2122219089Spjd/* 2123219089Spjd * Load an existing storage pool, using the pool's builtin spa_config as a 2124219089Spjd * source of configuration information. 2125219089Spjd */ 2126219089Spjdstatic int 2127219089Spjdspa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config, 2128219089Spjd spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, 2129219089Spjd char **ereport) 2130219089Spjd{ 2131219089Spjd int error = 0; 2132219089Spjd nvlist_t *nvroot = NULL; 2133236884Smm nvlist_t *label; 2134219089Spjd vdev_t *rvd; 2135219089Spjd uberblock_t *ub = &spa->spa_uberblock; 2136219089Spjd uint64_t children, config_cache_txg = spa->spa_config_txg; 2137219089Spjd int orig_mode = spa->spa_mode; 2138219089Spjd int parse; 2139219089Spjd uint64_t obj; 2140236884Smm boolean_t missing_feat_write = B_FALSE; 2141219089Spjd 2142168404Spjd /* 2143219089Spjd * If this is an untrusted config, access the pool in read-only mode. 2144219089Spjd * This prevents things like resilvering recently removed devices. 2145219089Spjd */ 2146219089Spjd if (!mosconfig) 2147219089Spjd spa->spa_mode = FREAD; 2148219089Spjd 2149219089Spjd ASSERT(MUTEX_HELD(&spa_namespace_lock)); 2150219089Spjd 2151219089Spjd spa->spa_load_state = state; 2152219089Spjd 2153219089Spjd if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot)) 2154249195Smm return (SET_ERROR(EINVAL)); 2155219089Spjd 2156219089Spjd parse = (type == SPA_IMPORT_EXISTING ? 2157219089Spjd VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT); 2158219089Spjd 2159219089Spjd /* 2160209962Smm * Create "The Godfather" zio to hold all async IOs 2161209962Smm */ 2162209962Smm spa->spa_async_zio_root = zio_root(spa, NULL, NULL, 2163209962Smm ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_GODFATHER); 2164209962Smm 2165209962Smm /* 2166168404Spjd * Parse the configuration into a vdev tree. We explicitly set the 2167168404Spjd * value that will be returned by spa_version() since parsing the 2168168404Spjd * configuration requires knowing the version number. 2169168404Spjd */ 2170185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2171219089Spjd error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, parse); 2172185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2173168404Spjd 2174168404Spjd if (error != 0) 2175219089Spjd return (error); 2176168404Spjd 2177168404Spjd ASSERT(spa->spa_root_vdev == rvd); 2178168404Spjd 2179219089Spjd if (type != SPA_IMPORT_ASSEMBLE) { 2180219089Spjd ASSERT(spa_guid(spa) == pool_guid); 2181219089Spjd } 2182219089Spjd 2183168404Spjd /* 2184168404Spjd * Try to open all vdevs, loading each label in the process. 2185168404Spjd */ 2186185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2187168926Spjd error = vdev_open(rvd); 2188185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2189168926Spjd if (error != 0) 2190219089Spjd return (error); 2191168404Spjd 2192168404Spjd /* 2193209962Smm * We need to validate the vdev labels against the configuration that 2194209962Smm * we have in hand, which is dependent on the setting of mosconfig. If 2195209962Smm * mosconfig is true then we're validating the vdev labels based on 2196219089Spjd * that config. Otherwise, we're validating against the cached config 2197209962Smm * (zpool.cache) that was read when we loaded the zfs module, and then 2198209962Smm * later we will recursively call spa_load() and validate against 2199209962Smm * the vdev config. 2200219089Spjd * 2201219089Spjd * If we're assembling a new pool that's been split off from an 2202219089Spjd * existing pool, the labels haven't yet been updated so we skip 2203219089Spjd * validation for now. 2204168404Spjd */ 2205219089Spjd if (type != SPA_IMPORT_ASSEMBLE) { 2206219089Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2207230514Smm error = vdev_validate(rvd, mosconfig); 2208219089Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2209168404Spjd 2210219089Spjd if (error != 0) 2211219089Spjd return (error); 2212219089Spjd 2213219089Spjd if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) 2214249195Smm return (SET_ERROR(ENXIO)); 2215168404Spjd } 2216168404Spjd 2217168404Spjd /* 2218168404Spjd * Find the best uberblock. 2219168404Spjd */ 2220236884Smm vdev_uberblock_load(rvd, ub, &label); 2221168404Spjd 2222168404Spjd /* 2223168404Spjd * If we weren't able to find a single valid uberblock, return failure. 2224168404Spjd */ 2225236884Smm if (ub->ub_txg == 0) { 2226236884Smm nvlist_free(label); 2227219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO)); 2228236884Smm } 2229168404Spjd 2230168404Spjd /* 2231236884Smm * If the pool has an unsupported version we can't open it. 2232168404Spjd */ 2233236884Smm if (!SPA_VERSION_IS_SUPPORTED(ub->ub_version)) { 2234236884Smm nvlist_free(label); 2235219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP)); 2236236884Smm } 2237168404Spjd 2238236884Smm if (ub->ub_version >= SPA_VERSION_FEATURES) { 2239236884Smm nvlist_t *features; 2240236884Smm 2241236884Smm /* 2242236884Smm * If we weren't able to find what's necessary for reading the 2243236884Smm * MOS in the label, return failure. 2244236884Smm */ 2245236884Smm if (label == NULL || nvlist_lookup_nvlist(label, 2246236884Smm ZPOOL_CONFIG_FEATURES_FOR_READ, &features) != 0) { 2247236884Smm nvlist_free(label); 2248236884Smm return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, 2249236884Smm ENXIO)); 2250236884Smm } 2251236884Smm 2252236884Smm /* 2253236884Smm * Update our in-core representation with the definitive values 2254236884Smm * from the label. 2255236884Smm */ 2256236884Smm nvlist_free(spa->spa_label_features); 2257236884Smm VERIFY(nvlist_dup(features, &spa->spa_label_features, 0) == 0); 2258236884Smm } 2259236884Smm 2260236884Smm nvlist_free(label); 2261236884Smm 2262168404Spjd /* 2263236884Smm * Look through entries in the label nvlist's features_for_read. If 2264236884Smm * there is a feature listed there which we don't understand then we 2265236884Smm * cannot open a pool. 2266236884Smm */ 2267236884Smm if (ub->ub_version >= SPA_VERSION_FEATURES) { 2268236884Smm nvlist_t *unsup_feat; 2269236884Smm 2270236884Smm VERIFY(nvlist_alloc(&unsup_feat, NV_UNIQUE_NAME, KM_SLEEP) == 2271236884Smm 0); 2272236884Smm 2273236884Smm for (nvpair_t *nvp = nvlist_next_nvpair(spa->spa_label_features, 2274236884Smm NULL); nvp != NULL; 2275236884Smm nvp = nvlist_next_nvpair(spa->spa_label_features, nvp)) { 2276236884Smm if (!zfeature_is_supported(nvpair_name(nvp))) { 2277236884Smm VERIFY(nvlist_add_string(unsup_feat, 2278236884Smm nvpair_name(nvp), "") == 0); 2279236884Smm } 2280236884Smm } 2281236884Smm 2282236884Smm if (!nvlist_empty(unsup_feat)) { 2283236884Smm VERIFY(nvlist_add_nvlist(spa->spa_load_info, 2284236884Smm ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat) == 0); 2285236884Smm nvlist_free(unsup_feat); 2286236884Smm return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, 2287236884Smm ENOTSUP)); 2288236884Smm } 2289236884Smm 2290236884Smm nvlist_free(unsup_feat); 2291236884Smm } 2292236884Smm 2293236884Smm /* 2294168404Spjd * If the vdev guid sum doesn't match the uberblock, we have an 2295219089Spjd * incomplete configuration. We first check to see if the pool 2296219089Spjd * is aware of the complete config (i.e ZPOOL_CONFIG_VDEV_CHILDREN). 2297219089Spjd * If it is, defer the vdev_guid_sum check till later so we 2298219089Spjd * can handle missing vdevs. 2299168404Spjd */ 2300219089Spjd if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VDEV_CHILDREN, 2301219089Spjd &children) != 0 && mosconfig && type != SPA_IMPORT_ASSEMBLE && 2302219089Spjd rvd->vdev_guid_sum != ub->ub_guid_sum) 2303219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO)); 2304219089Spjd 2305219089Spjd if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) { 2306219089Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2307219089Spjd spa_try_repair(spa, config); 2308219089Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2309219089Spjd nvlist_free(spa->spa_config_splitting); 2310219089Spjd spa->spa_config_splitting = NULL; 2311168404Spjd } 2312168404Spjd 2313168404Spjd /* 2314168404Spjd * Initialize internal SPA structures. 2315168404Spjd */ 2316168404Spjd spa->spa_state = POOL_STATE_ACTIVE; 2317168404Spjd spa->spa_ubsync = spa->spa_uberblock; 2318219089Spjd spa->spa_verify_min_txg = spa->spa_extreme_rewind ? 2319219089Spjd TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1; 2320219089Spjd spa->spa_first_txg = spa->spa_last_ubsync_txg ? 2321219089Spjd spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1; 2322219089Spjd spa->spa_claim_max_txg = spa->spa_first_txg; 2323219089Spjd spa->spa_prev_software_version = ub->ub_software_version; 2324219089Spjd 2325236884Smm error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool); 2326219089Spjd if (error) 2327219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2328168404Spjd spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; 2329168404Spjd 2330219089Spjd if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object) != 0) 2331219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2332168404Spjd 2333236884Smm if (spa_version(spa) >= SPA_VERSION_FEATURES) { 2334236884Smm boolean_t missing_feat_read = B_FALSE; 2335238926Smm nvlist_t *unsup_feat, *enabled_feat; 2336236884Smm 2337236884Smm if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ, 2338236884Smm &spa->spa_feat_for_read_obj) != 0) { 2339236884Smm return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2340236884Smm } 2341236884Smm 2342236884Smm if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE, 2343236884Smm &spa->spa_feat_for_write_obj) != 0) { 2344236884Smm return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2345236884Smm } 2346236884Smm 2347236884Smm if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS, 2348236884Smm &spa->spa_feat_desc_obj) != 0) { 2349236884Smm return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2350236884Smm } 2351236884Smm 2352238926Smm enabled_feat = fnvlist_alloc(); 2353238926Smm unsup_feat = fnvlist_alloc(); 2354236884Smm 2355259813Sdelphij if (!spa_features_check(spa, B_FALSE, 2356238926Smm unsup_feat, enabled_feat)) 2357236884Smm missing_feat_read = B_TRUE; 2358236884Smm 2359236884Smm if (spa_writeable(spa) || state == SPA_LOAD_TRYIMPORT) { 2360259813Sdelphij if (!spa_features_check(spa, B_TRUE, 2361238926Smm unsup_feat, enabled_feat)) { 2362236884Smm missing_feat_write = B_TRUE; 2363238926Smm } 2364236884Smm } 2365236884Smm 2366238926Smm fnvlist_add_nvlist(spa->spa_load_info, 2367238926Smm ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat); 2368238926Smm 2369236884Smm if (!nvlist_empty(unsup_feat)) { 2370238926Smm fnvlist_add_nvlist(spa->spa_load_info, 2371238926Smm ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat); 2372236884Smm } 2373236884Smm 2374238926Smm fnvlist_free(enabled_feat); 2375238926Smm fnvlist_free(unsup_feat); 2376236884Smm 2377236884Smm if (!missing_feat_read) { 2378236884Smm fnvlist_add_boolean(spa->spa_load_info, 2379236884Smm ZPOOL_CONFIG_CAN_RDONLY); 2380236884Smm } 2381236884Smm 2382236884Smm /* 2383236884Smm * If the state is SPA_LOAD_TRYIMPORT, our objective is 2384236884Smm * twofold: to determine whether the pool is available for 2385236884Smm * import in read-write mode and (if it is not) whether the 2386236884Smm * pool is available for import in read-only mode. If the pool 2387236884Smm * is available for import in read-write mode, it is displayed 2388236884Smm * as available in userland; if it is not available for import 2389236884Smm * in read-only mode, it is displayed as unavailable in 2390236884Smm * userland. If the pool is available for import in read-only 2391236884Smm * mode but not read-write mode, it is displayed as unavailable 2392236884Smm * in userland with a special note that the pool is actually 2393236884Smm * available for open in read-only mode. 2394236884Smm * 2395236884Smm * As a result, if the state is SPA_LOAD_TRYIMPORT and we are 2396236884Smm * missing a feature for write, we must first determine whether 2397236884Smm * the pool can be opened read-only before returning to 2398236884Smm * userland in order to know whether to display the 2399236884Smm * abovementioned note. 2400236884Smm */ 2401236884Smm if (missing_feat_read || (missing_feat_write && 2402236884Smm spa_writeable(spa))) { 2403236884Smm return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, 2404236884Smm ENOTSUP)); 2405236884Smm } 2406260150Sdelphij 2407260150Sdelphij /* 2408260150Sdelphij * Load refcounts for ZFS features from disk into an in-memory 2409260150Sdelphij * cache during SPA initialization. 2410260150Sdelphij */ 2411260150Sdelphij for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { 2412260150Sdelphij uint64_t refcount; 2413260150Sdelphij 2414260150Sdelphij error = feature_get_refcount_from_disk(spa, 2415260150Sdelphij &spa_feature_table[i], &refcount); 2416260150Sdelphij if (error == 0) { 2417260150Sdelphij spa->spa_feat_refcount_cache[i] = refcount; 2418260150Sdelphij } else if (error == ENOTSUP) { 2419260150Sdelphij spa->spa_feat_refcount_cache[i] = 2420260150Sdelphij SPA_FEATURE_DISABLED; 2421260150Sdelphij } else { 2422260150Sdelphij return (spa_vdev_err(rvd, 2423260150Sdelphij VDEV_AUX_CORRUPT_DATA, EIO)); 2424260150Sdelphij } 2425260150Sdelphij } 2426236884Smm } 2427236884Smm 2428260150Sdelphij if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) { 2429260150Sdelphij if (spa_dir_prop(spa, DMU_POOL_FEATURE_ENABLED_TXG, 2430260150Sdelphij &spa->spa_feat_enabled_txg_obj) != 0) { 2431260150Sdelphij return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2432260150Sdelphij } 2433260150Sdelphij } 2434260150Sdelphij 2435236884Smm spa->spa_is_initializing = B_TRUE; 2436236884Smm error = dsl_pool_open(spa->spa_dsl_pool); 2437236884Smm spa->spa_is_initializing = B_FALSE; 2438236884Smm if (error != 0) 2439236884Smm return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2440236884Smm 2441168404Spjd if (!mosconfig) { 2442168498Spjd uint64_t hostid; 2443219089Spjd nvlist_t *policy = NULL, *nvconfig; 2444168404Spjd 2445219089Spjd if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) 2446219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2447168404Spjd 2448219089Spjd if (!spa_is_root(spa) && nvlist_lookup_uint64(nvconfig, 2449185029Spjd ZPOOL_CONFIG_HOSTID, &hostid) == 0) { 2450168498Spjd char *hostname; 2451168498Spjd unsigned long myhostid = 0; 2452168498Spjd 2453219089Spjd VERIFY(nvlist_lookup_string(nvconfig, 2454168498Spjd ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); 2455168498Spjd 2456219089Spjd#ifdef _KERNEL 2457219089Spjd myhostid = zone_get_hostid(NULL); 2458219089Spjd#else /* _KERNEL */ 2459219089Spjd /* 2460219089Spjd * We're emulating the system's hostid in userland, so 2461219089Spjd * we can't use zone_get_hostid(). 2462219089Spjd */ 2463168498Spjd (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); 2464219089Spjd#endif /* _KERNEL */ 2465204073Spjd if (check_hostid && hostid != 0 && myhostid != 0 && 2466219089Spjd hostid != myhostid) { 2467219089Spjd nvlist_free(nvconfig); 2468168498Spjd cmn_err(CE_WARN, "pool '%s' could not be " 2469168498Spjd "loaded as it was last accessed by " 2470185029Spjd "another system (host: %s hostid: 0x%lx). " 2471236146Smm "See: http://illumos.org/msg/ZFS-8000-EY", 2472185029Spjd spa_name(spa), hostname, 2473168498Spjd (unsigned long)hostid); 2474249195Smm return (SET_ERROR(EBADF)); 2475168498Spjd } 2476168498Spjd } 2477219089Spjd if (nvlist_lookup_nvlist(spa->spa_config, 2478219089Spjd ZPOOL_REWIND_POLICY, &policy) == 0) 2479219089Spjd VERIFY(nvlist_add_nvlist(nvconfig, 2480219089Spjd ZPOOL_REWIND_POLICY, policy) == 0); 2481168498Spjd 2482219089Spjd spa_config_set(spa, nvconfig); 2483168404Spjd spa_unload(spa); 2484168404Spjd spa_deactivate(spa); 2485209962Smm spa_activate(spa, orig_mode); 2486168404Spjd 2487219089Spjd return (spa_load(spa, state, SPA_IMPORT_EXISTING, B_TRUE)); 2488168404Spjd } 2489168404Spjd 2490219089Spjd if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj) != 0) 2491219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2492219089Spjd error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj); 2493219089Spjd if (error != 0) 2494219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2495168404Spjd 2496168404Spjd /* 2497168404Spjd * Load the bit that tells us to use the new accounting function 2498168404Spjd * (raid-z deflation). If we have an older pool, this will not 2499168404Spjd * be present. 2500168404Spjd */ 2501219089Spjd error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate); 2502219089Spjd if (error != 0 && error != ENOENT) 2503219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2504168404Spjd 2505219089Spjd error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION, 2506219089Spjd &spa->spa_creation_version); 2507219089Spjd if (error != 0 && error != ENOENT) 2508219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2509219089Spjd 2510168404Spjd /* 2511168404Spjd * Load the persistent error log. If we have an older pool, this will 2512168404Spjd * not be present. 2513168404Spjd */ 2514219089Spjd error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last); 2515219089Spjd if (error != 0 && error != ENOENT) 2516219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2517168404Spjd 2518219089Spjd error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB, 2519219089Spjd &spa->spa_errlog_scrub); 2520219089Spjd if (error != 0 && error != ENOENT) 2521219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2522168404Spjd 2523168404Spjd /* 2524168404Spjd * Load the history object. If we have an older pool, this 2525168404Spjd * will not be present. 2526168404Spjd */ 2527219089Spjd error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history); 2528219089Spjd if (error != 0 && error != ENOENT) 2529219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2530168404Spjd 2531168404Spjd /* 2532219089Spjd * If we're assembling the pool from the split-off vdevs of 2533219089Spjd * an existing pool, we don't want to attach the spares & cache 2534219089Spjd * devices. 2535219089Spjd */ 2536219089Spjd 2537219089Spjd /* 2538168404Spjd * Load any hot spares for this pool. 2539168404Spjd */ 2540219089Spjd error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object); 2541219089Spjd if (error != 0 && error != ENOENT) 2542219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2543219089Spjd if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { 2544185029Spjd ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); 2545185029Spjd if (load_nvlist(spa, spa->spa_spares.sav_object, 2546219089Spjd &spa->spa_spares.sav_config) != 0) 2547219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2548168404Spjd 2549185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2550168404Spjd spa_load_spares(spa); 2551185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2552219089Spjd } else if (error == 0) { 2553219089Spjd spa->spa_spares.sav_sync = B_TRUE; 2554168404Spjd } 2555168404Spjd 2556185029Spjd /* 2557185029Spjd * Load any level 2 ARC devices for this pool. 2558185029Spjd */ 2559219089Spjd error = spa_dir_prop(spa, DMU_POOL_L2CACHE, 2560185029Spjd &spa->spa_l2cache.sav_object); 2561219089Spjd if (error != 0 && error != ENOENT) 2562219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2563219089Spjd if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { 2564185029Spjd ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); 2565185029Spjd if (load_nvlist(spa, spa->spa_l2cache.sav_object, 2566219089Spjd &spa->spa_l2cache.sav_config) != 0) 2567219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2568185029Spjd 2569185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2570185029Spjd spa_load_l2cache(spa); 2571185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2572219089Spjd } else if (error == 0) { 2573219089Spjd spa->spa_l2cache.sav_sync = B_TRUE; 2574185029Spjd } 2575185029Spjd 2576219089Spjd spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); 2577213197Smm 2578219089Spjd error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object); 2579219089Spjd if (error && error != ENOENT) 2580219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2581185029Spjd 2582219089Spjd if (error == 0) { 2583219089Spjd uint64_t autoreplace; 2584185029Spjd 2585219089Spjd spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs); 2586219089Spjd spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace); 2587219089Spjd spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation); 2588219089Spjd spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode); 2589219089Spjd spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand); 2590219089Spjd spa_prop_find(spa, ZPOOL_PROP_DEDUPDITTO, 2591219089Spjd &spa->spa_dedup_ditto); 2592185029Spjd 2593219089Spjd spa->spa_autoreplace = (autoreplace != 0); 2594168404Spjd } 2595168404Spjd 2596168404Spjd /* 2597185029Spjd * If the 'autoreplace' property is set, then post a resource notifying 2598185029Spjd * the ZFS DE that it should not issue any faults for unopenable 2599185029Spjd * devices. We also iterate over the vdevs, and post a sysevent for any 2600185029Spjd * unopenable vdevs so that the normal autoreplace handler can take 2601185029Spjd * over. 2602185029Spjd */ 2603219089Spjd if (spa->spa_autoreplace && state != SPA_LOAD_TRYIMPORT) { 2604185029Spjd spa_check_removed(spa->spa_root_vdev); 2605219089Spjd /* 2606219089Spjd * For the import case, this is done in spa_import(), because 2607219089Spjd * at this point we're using the spare definitions from 2608219089Spjd * the MOS config, not necessarily from the userland config. 2609219089Spjd */ 2610219089Spjd if (state != SPA_LOAD_IMPORT) { 2611219089Spjd spa_aux_check_removed(&spa->spa_spares); 2612219089Spjd spa_aux_check_removed(&spa->spa_l2cache); 2613219089Spjd } 2614219089Spjd } 2615185029Spjd 2616185029Spjd /* 2617168404Spjd * Load the vdev state for all toplevel vdevs. 2618168404Spjd */ 2619168404Spjd vdev_load(rvd); 2620168404Spjd 2621168404Spjd /* 2622168404Spjd * Propagate the leaf DTLs we just loaded all the way up the tree. 2623168404Spjd */ 2624185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 2625168404Spjd vdev_dtl_reassess(rvd, 0, 0, B_FALSE); 2626185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 2627168404Spjd 2628168404Spjd /* 2629219089Spjd * Load the DDTs (dedup tables). 2630168404Spjd */ 2631219089Spjd error = ddt_load(spa); 2632219089Spjd if (error != 0) 2633219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2634219089Spjd 2635219089Spjd spa_update_dspace(spa); 2636219089Spjd 2637219089Spjd /* 2638219089Spjd * Validate the config, using the MOS config to fill in any 2639219089Spjd * information which might be missing. If we fail to validate 2640219089Spjd * the config then declare the pool unfit for use. If we're 2641219089Spjd * assembling a pool from a split, the log is not transferred 2642219089Spjd * over. 2643219089Spjd */ 2644219089Spjd if (type != SPA_IMPORT_ASSEMBLE) { 2645219089Spjd nvlist_t *nvconfig; 2646219089Spjd 2647219089Spjd if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) 2648219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); 2649219089Spjd 2650219089Spjd if (!spa_config_valid(spa, nvconfig)) { 2651219089Spjd nvlist_free(nvconfig); 2652219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, 2653219089Spjd ENXIO)); 2654219089Spjd } 2655219089Spjd nvlist_free(nvconfig); 2656219089Spjd 2657219089Spjd /* 2658236884Smm * Now that we've validated the config, check the state of the 2659219089Spjd * root vdev. If it can't be opened, it indicates one or 2660219089Spjd * more toplevel vdevs are faulted. 2661219089Spjd */ 2662219089Spjd if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) 2663249195Smm return (SET_ERROR(ENXIO)); 2664219089Spjd 2665219089Spjd if (spa_check_logs(spa)) { 2666219089Spjd *ereport = FM_EREPORT_ZFS_LOG_REPLAY; 2667219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG, ENXIO)); 2668219089Spjd } 2669168404Spjd } 2670168404Spjd 2671236884Smm if (missing_feat_write) { 2672236884Smm ASSERT(state == SPA_LOAD_TRYIMPORT); 2673236884Smm 2674236884Smm /* 2675236884Smm * At this point, we know that we can open the pool in 2676236884Smm * read-only mode but not read-write mode. We now have enough 2677236884Smm * information and can return to userland. 2678236884Smm */ 2679236884Smm return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, ENOTSUP)); 2680236884Smm } 2681236884Smm 2682219089Spjd /* 2683219089Spjd * We've successfully opened the pool, verify that we're ready 2684219089Spjd * to start pushing transactions. 2685219089Spjd */ 2686219089Spjd if (state != SPA_LOAD_TRYIMPORT) { 2687219089Spjd if (error = spa_load_verify(spa)) 2688219089Spjd return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, 2689219089Spjd error)); 2690219089Spjd } 2691219089Spjd 2692219089Spjd if (spa_writeable(spa) && (state == SPA_LOAD_RECOVER || 2693219089Spjd spa->spa_load_max_txg == UINT64_MAX)) { 2694168404Spjd dmu_tx_t *tx; 2695168404Spjd int need_update = B_FALSE; 2696168404Spjd 2697209962Smm ASSERT(state != SPA_LOAD_TRYIMPORT); 2698209962Smm 2699168404Spjd /* 2700168404Spjd * Claim log blocks that haven't been committed yet. 2701168404Spjd * This must all happen in a single txg. 2702219089Spjd * Note: spa_claim_max_txg is updated by spa_claim_notify(), 2703219089Spjd * invoked from zil_claim_log_block()'s i/o done callback. 2704219089Spjd * Price of rollback is that we abandon the log. 2705168404Spjd */ 2706219089Spjd spa->spa_claiming = B_TRUE; 2707219089Spjd 2708168404Spjd tx = dmu_tx_create_assigned(spa_get_dsl(spa), 2709168404Spjd spa_first_txg(spa)); 2710185029Spjd (void) dmu_objset_find(spa_name(spa), 2711168404Spjd zil_claim, tx, DS_FIND_CHILDREN); 2712168404Spjd dmu_tx_commit(tx); 2713168404Spjd 2714219089Spjd spa->spa_claiming = B_FALSE; 2715219089Spjd 2716219089Spjd spa_set_log_state(spa, SPA_LOG_GOOD); 2717168404Spjd spa->spa_sync_on = B_TRUE; 2718168404Spjd txg_sync_start(spa->spa_dsl_pool); 2719168404Spjd 2720168404Spjd /* 2721219089Spjd * Wait for all claims to sync. We sync up to the highest 2722219089Spjd * claimed log block birth time so that claimed log blocks 2723219089Spjd * don't appear to be from the future. spa_claim_max_txg 2724219089Spjd * will have been set for us by either zil_check_log_chain() 2725219089Spjd * (invoked from spa_check_logs()) or zil_claim() above. 2726168404Spjd */ 2727219089Spjd txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg); 2728168404Spjd 2729168404Spjd /* 2730168404Spjd * If the config cache is stale, or we have uninitialized 2731168404Spjd * metaslabs (see spa_vdev_add()), then update the config. 2732209962Smm * 2733219089Spjd * If this is a verbatim import, trust the current 2734209962Smm * in-core spa_config and update the disk labels. 2735168404Spjd */ 2736168404Spjd if (config_cache_txg != spa->spa_config_txg || 2737219089Spjd state == SPA_LOAD_IMPORT || 2738219089Spjd state == SPA_LOAD_RECOVER || 2739219089Spjd (spa->spa_import_flags & ZFS_IMPORT_VERBATIM)) 2740168404Spjd need_update = B_TRUE; 2741168404Spjd 2742209962Smm for (int c = 0; c < rvd->vdev_children; c++) 2743168404Spjd if (rvd->vdev_child[c]->vdev_ms_array == 0) 2744168404Spjd need_update = B_TRUE; 2745168404Spjd 2746168404Spjd /* 2747168404Spjd * Update the config cache asychronously in case we're the 2748168404Spjd * root pool, in which case the config cache isn't writable yet. 2749168404Spjd */ 2750168404Spjd if (need_update) 2751168404Spjd spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); 2752208683Spjd 2753208683Spjd /* 2754208683Spjd * Check all DTLs to see if anything needs resilvering. 2755208683Spjd */ 2756219089Spjd if (!dsl_scan_resilvering(spa->spa_dsl_pool) && 2757219089Spjd vdev_resilver_needed(rvd, NULL, NULL)) 2758208683Spjd spa_async_request(spa, SPA_ASYNC_RESILVER); 2759219089Spjd 2760219089Spjd /* 2761248571Smm * Log the fact that we booted up (so that we can detect if 2762248571Smm * we rebooted in the middle of an operation). 2763248571Smm */ 2764248571Smm spa_history_log_version(spa, "open"); 2765248571Smm 2766248571Smm /* 2767219089Spjd * Delete any inconsistent datasets. 2768219089Spjd */ 2769219089Spjd (void) dmu_objset_find(spa_name(spa), 2770219089Spjd dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN); 2771219089Spjd 2772219089Spjd /* 2773219089Spjd * Clean up any stale temporary dataset userrefs. 2774219089Spjd */ 2775219089Spjd dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool); 2776168404Spjd } 2777168404Spjd 2778219089Spjd return (0); 2779219089Spjd} 2780168404Spjd 2781219089Spjdstatic int 2782219089Spjdspa_load_retry(spa_t *spa, spa_load_state_t state, int mosconfig) 2783219089Spjd{ 2784219089Spjd int mode = spa->spa_mode; 2785219089Spjd 2786219089Spjd spa_unload(spa); 2787219089Spjd spa_deactivate(spa); 2788219089Spjd 2789219089Spjd spa->spa_load_max_txg--; 2790219089Spjd 2791219089Spjd spa_activate(spa, mode); 2792219089Spjd spa_async_suspend(spa); 2793219089Spjd 2794219089Spjd return (spa_load(spa, state, SPA_IMPORT_EXISTING, mosconfig)); 2795168404Spjd} 2796168404Spjd 2797236884Smm/* 2798236884Smm * If spa_load() fails this function will try loading prior txg's. If 2799236884Smm * 'state' is SPA_LOAD_RECOVER and one of these loads succeeds the pool 2800236884Smm * will be rewound to that txg. If 'state' is not SPA_LOAD_RECOVER this 2801236884Smm * function will not rewind the pool and will return the same error as 2802236884Smm * spa_load(). 2803236884Smm */ 2804219089Spjdstatic int 2805219089Spjdspa_load_best(spa_t *spa, spa_load_state_t state, int mosconfig, 2806219089Spjd uint64_t max_request, int rewind_flags) 2807219089Spjd{ 2808236884Smm nvlist_t *loadinfo = NULL; 2809219089Spjd nvlist_t *config = NULL; 2810219089Spjd int load_error, rewind_error; 2811219089Spjd uint64_t safe_rewind_txg; 2812219089Spjd uint64_t min_txg; 2813219089Spjd 2814219089Spjd if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) { 2815219089Spjd spa->spa_load_max_txg = spa->spa_load_txg; 2816219089Spjd spa_set_log_state(spa, SPA_LOG_CLEAR); 2817219089Spjd } else { 2818219089Spjd spa->spa_load_max_txg = max_request; 2819219089Spjd } 2820219089Spjd 2821219089Spjd load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING, 2822219089Spjd mosconfig); 2823219089Spjd if (load_error == 0) 2824219089Spjd return (0); 2825219089Spjd 2826219089Spjd if (spa->spa_root_vdev != NULL) 2827219089Spjd config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); 2828219089Spjd 2829219089Spjd spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg; 2830219089Spjd spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp; 2831219089Spjd 2832219089Spjd if (rewind_flags & ZPOOL_NEVER_REWIND) { 2833219089Spjd nvlist_free(config); 2834219089Spjd return (load_error); 2835219089Spjd } 2836219089Spjd 2837236884Smm if (state == SPA_LOAD_RECOVER) { 2838236884Smm /* Price of rolling back is discarding txgs, including log */ 2839219089Spjd spa_set_log_state(spa, SPA_LOG_CLEAR); 2840236884Smm } else { 2841236884Smm /* 2842236884Smm * If we aren't rolling back save the load info from our first 2843236884Smm * import attempt so that we can restore it after attempting 2844236884Smm * to rewind. 2845236884Smm */ 2846236884Smm loadinfo = spa->spa_load_info; 2847236884Smm spa->spa_load_info = fnvlist_alloc(); 2848236884Smm } 2849219089Spjd 2850219089Spjd spa->spa_load_max_txg = spa->spa_last_ubsync_txg; 2851219089Spjd safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE; 2852219089Spjd min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ? 2853219089Spjd TXG_INITIAL : safe_rewind_txg; 2854219089Spjd 2855219089Spjd /* 2856219089Spjd * Continue as long as we're finding errors, we're still within 2857219089Spjd * the acceptable rewind range, and we're still finding uberblocks 2858219089Spjd */ 2859219089Spjd while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg && 2860219089Spjd spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) { 2861219089Spjd if (spa->spa_load_max_txg < safe_rewind_txg) 2862219089Spjd spa->spa_extreme_rewind = B_TRUE; 2863219089Spjd rewind_error = spa_load_retry(spa, state, mosconfig); 2864219089Spjd } 2865219089Spjd 2866219089Spjd spa->spa_extreme_rewind = B_FALSE; 2867219089Spjd spa->spa_load_max_txg = UINT64_MAX; 2868219089Spjd 2869219089Spjd if (config && (rewind_error || state != SPA_LOAD_RECOVER)) 2870219089Spjd spa_config_set(spa, config); 2871219089Spjd 2872236884Smm if (state == SPA_LOAD_RECOVER) { 2873236884Smm ASSERT3P(loadinfo, ==, NULL); 2874236884Smm return (rewind_error); 2875236884Smm } else { 2876236884Smm /* Store the rewind info as part of the initial load info */ 2877236884Smm fnvlist_add_nvlist(loadinfo, ZPOOL_CONFIG_REWIND_INFO, 2878236884Smm spa->spa_load_info); 2879236884Smm 2880236884Smm /* Restore the initial load info */ 2881236884Smm fnvlist_free(spa->spa_load_info); 2882236884Smm spa->spa_load_info = loadinfo; 2883236884Smm 2884236884Smm return (load_error); 2885236884Smm } 2886219089Spjd} 2887219089Spjd 2888168404Spjd/* 2889168404Spjd * Pool Open/Import 2890168404Spjd * 2891168404Spjd * The import case is identical to an open except that the configuration is sent 2892168404Spjd * down from userland, instead of grabbed from the configuration cache. For the 2893168404Spjd * case of an open, the pool configuration will exist in the 2894185029Spjd * POOL_STATE_UNINITIALIZED state. 2895168404Spjd * 2896168404Spjd * The stats information (gen/count/ustats) is used to gather vdev statistics at 2897168404Spjd * the same time open the pool, without having to keep around the spa_t in some 2898168404Spjd * ambiguous state. 2899168404Spjd */ 2900168404Spjdstatic int 2901219089Spjdspa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, 2902219089Spjd nvlist_t **config) 2903168404Spjd{ 2904168404Spjd spa_t *spa; 2905219089Spjd spa_load_state_t state = SPA_LOAD_OPEN; 2906168404Spjd int error; 2907168404Spjd int locked = B_FALSE; 2908219089Spjd int firstopen = B_FALSE; 2909168404Spjd 2910168404Spjd *spapp = NULL; 2911168404Spjd 2912168404Spjd /* 2913168404Spjd * As disgusting as this is, we need to support recursive calls to this 2914168404Spjd * function because dsl_dir_open() is called during spa_load(), and ends 2915168404Spjd * up calling spa_open() again. The real fix is to figure out how to 2916168404Spjd * avoid dsl_dir_open() calling this in the first place. 2917168404Spjd */ 2918168404Spjd if (mutex_owner(&spa_namespace_lock) != curthread) { 2919168404Spjd mutex_enter(&spa_namespace_lock); 2920168404Spjd locked = B_TRUE; 2921168404Spjd } 2922168404Spjd 2923168404Spjd if ((spa = spa_lookup(pool)) == NULL) { 2924168404Spjd if (locked) 2925168404Spjd mutex_exit(&spa_namespace_lock); 2926249195Smm return (SET_ERROR(ENOENT)); 2927168404Spjd } 2928219089Spjd 2929168404Spjd if (spa->spa_state == POOL_STATE_UNINITIALIZED) { 2930219089Spjd zpool_rewind_policy_t policy; 2931168404Spjd 2932219089Spjd firstopen = B_TRUE; 2933219089Spjd 2934219089Spjd zpool_get_rewind_policy(nvpolicy ? nvpolicy : spa->spa_config, 2935219089Spjd &policy); 2936219089Spjd if (policy.zrp_request & ZPOOL_DO_REWIND) 2937219089Spjd state = SPA_LOAD_RECOVER; 2938219089Spjd 2939209962Smm spa_activate(spa, spa_mode_global); 2940168404Spjd 2941219089Spjd if (state != SPA_LOAD_RECOVER) 2942219089Spjd spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; 2943168404Spjd 2944219089Spjd error = spa_load_best(spa, state, B_FALSE, policy.zrp_txg, 2945219089Spjd policy.zrp_request); 2946219089Spjd 2947168404Spjd if (error == EBADF) { 2948168404Spjd /* 2949168404Spjd * If vdev_validate() returns failure (indicated by 2950168404Spjd * EBADF), it indicates that one of the vdevs indicates 2951168404Spjd * that the pool has been exported or destroyed. If 2952168404Spjd * this is the case, the config cache is out of sync and 2953168404Spjd * we should remove the pool from the namespace. 2954168404Spjd */ 2955168404Spjd spa_unload(spa); 2956168404Spjd spa_deactivate(spa); 2957185029Spjd spa_config_sync(spa, B_TRUE, B_TRUE); 2958168404Spjd spa_remove(spa); 2959168404Spjd if (locked) 2960168404Spjd mutex_exit(&spa_namespace_lock); 2961249195Smm return (SET_ERROR(ENOENT)); 2962168404Spjd } 2963168404Spjd 2964168404Spjd if (error) { 2965168404Spjd /* 2966168404Spjd * We can't open the pool, but we still have useful 2967168404Spjd * information: the state of each vdev after the 2968168404Spjd * attempted vdev_open(). Return this to the user. 2969168404Spjd */ 2970219089Spjd if (config != NULL && spa->spa_config) { 2971219089Spjd VERIFY(nvlist_dup(spa->spa_config, config, 2972219089Spjd KM_SLEEP) == 0); 2973219089Spjd VERIFY(nvlist_add_nvlist(*config, 2974219089Spjd ZPOOL_CONFIG_LOAD_INFO, 2975219089Spjd spa->spa_load_info) == 0); 2976219089Spjd } 2977168404Spjd spa_unload(spa); 2978168404Spjd spa_deactivate(spa); 2979219089Spjd spa->spa_last_open_failed = error; 2980168404Spjd if (locked) 2981168404Spjd mutex_exit(&spa_namespace_lock); 2982168404Spjd *spapp = NULL; 2983168404Spjd return (error); 2984168404Spjd } 2985168404Spjd } 2986168404Spjd 2987168404Spjd spa_open_ref(spa, tag); 2988185029Spjd 2989219089Spjd if (config != NULL) 2990219089Spjd *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); 2991219089Spjd 2992219089Spjd /* 2993219089Spjd * If we've recovered the pool, pass back any information we 2994219089Spjd * gathered while doing the load. 2995219089Spjd */ 2996219089Spjd if (state == SPA_LOAD_RECOVER) { 2997219089Spjd VERIFY(nvlist_add_nvlist(*config, ZPOOL_CONFIG_LOAD_INFO, 2998219089Spjd spa->spa_load_info) == 0); 2999219089Spjd } 3000219089Spjd 3001219089Spjd if (locked) { 3002219089Spjd spa->spa_last_open_failed = 0; 3003219089Spjd spa->spa_last_ubsync_txg = 0; 3004219089Spjd spa->spa_load_txg = 0; 3005168404Spjd mutex_exit(&spa_namespace_lock); 3006219089Spjd#ifdef __FreeBSD__ 3007219089Spjd#ifdef _KERNEL 3008219089Spjd if (firstopen) 3009249047Savg zvol_create_minors(spa->spa_name); 3010219089Spjd#endif 3011219089Spjd#endif 3012219089Spjd } 3013168404Spjd 3014168404Spjd *spapp = spa; 3015168404Spjd 3016168404Spjd return (0); 3017168404Spjd} 3018168404Spjd 3019168404Spjdint 3020219089Spjdspa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy, 3021219089Spjd nvlist_t **config) 3022219089Spjd{ 3023219089Spjd return (spa_open_common(name, spapp, tag, policy, config)); 3024219089Spjd} 3025219089Spjd 3026219089Spjdint 3027168404Spjdspa_open(const char *name, spa_t **spapp, void *tag) 3028168404Spjd{ 3029219089Spjd return (spa_open_common(name, spapp, tag, NULL, NULL)); 3030168404Spjd} 3031168404Spjd 3032168404Spjd/* 3033168404Spjd * Lookup the given spa_t, incrementing the inject count in the process, 3034168404Spjd * preventing it from being exported or destroyed. 3035168404Spjd */ 3036168404Spjdspa_t * 3037168404Spjdspa_inject_addref(char *name) 3038168404Spjd{ 3039168404Spjd spa_t *spa; 3040168404Spjd 3041168404Spjd mutex_enter(&spa_namespace_lock); 3042168404Spjd if ((spa = spa_lookup(name)) == NULL) { 3043168404Spjd mutex_exit(&spa_namespace_lock); 3044168404Spjd return (NULL); 3045168404Spjd } 3046168404Spjd spa->spa_inject_ref++; 3047168404Spjd mutex_exit(&spa_namespace_lock); 3048168404Spjd 3049168404Spjd return (spa); 3050168404Spjd} 3051168404Spjd 3052168404Spjdvoid 3053168404Spjdspa_inject_delref(spa_t *spa) 3054168404Spjd{ 3055168404Spjd mutex_enter(&spa_namespace_lock); 3056168404Spjd spa->spa_inject_ref--; 3057168404Spjd mutex_exit(&spa_namespace_lock); 3058168404Spjd} 3059168404Spjd 3060185029Spjd/* 3061185029Spjd * Add spares device information to the nvlist. 3062185029Spjd */ 3063168404Spjdstatic void 3064168404Spjdspa_add_spares(spa_t *spa, nvlist_t *config) 3065168404Spjd{ 3066168404Spjd nvlist_t **spares; 3067168404Spjd uint_t i, nspares; 3068168404Spjd nvlist_t *nvroot; 3069168404Spjd uint64_t guid; 3070168404Spjd vdev_stat_t *vs; 3071168404Spjd uint_t vsc; 3072168404Spjd uint64_t pool; 3073168404Spjd 3074209962Smm ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); 3075209962Smm 3076185029Spjd if (spa->spa_spares.sav_count == 0) 3077168404Spjd return; 3078168404Spjd 3079168404Spjd VERIFY(nvlist_lookup_nvlist(config, 3080168404Spjd ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3081185029Spjd VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, 3082168404Spjd ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); 3083168404Spjd if (nspares != 0) { 3084168404Spjd VERIFY(nvlist_add_nvlist_array(nvroot, 3085168404Spjd ZPOOL_CONFIG_SPARES, spares, nspares) == 0); 3086168404Spjd VERIFY(nvlist_lookup_nvlist_array(nvroot, 3087168404Spjd ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); 3088168404Spjd 3089168404Spjd /* 3090168404Spjd * Go through and find any spares which have since been 3091168404Spjd * repurposed as an active spare. If this is the case, update 3092168404Spjd * their status appropriately. 3093168404Spjd */ 3094168404Spjd for (i = 0; i < nspares; i++) { 3095168404Spjd VERIFY(nvlist_lookup_uint64(spares[i], 3096168404Spjd ZPOOL_CONFIG_GUID, &guid) == 0); 3097185029Spjd if (spa_spare_exists(guid, &pool, NULL) && 3098185029Spjd pool != 0ULL) { 3099168404Spjd VERIFY(nvlist_lookup_uint64_array( 3100219089Spjd spares[i], ZPOOL_CONFIG_VDEV_STATS, 3101168404Spjd (uint64_t **)&vs, &vsc) == 0); 3102168404Spjd vs->vs_state = VDEV_STATE_CANT_OPEN; 3103168404Spjd vs->vs_aux = VDEV_AUX_SPARED; 3104168404Spjd } 3105168404Spjd } 3106168404Spjd } 3107168404Spjd} 3108168404Spjd 3109185029Spjd/* 3110185029Spjd * Add l2cache device information to the nvlist, including vdev stats. 3111185029Spjd */ 3112185029Spjdstatic void 3113185029Spjdspa_add_l2cache(spa_t *spa, nvlist_t *config) 3114185029Spjd{ 3115185029Spjd nvlist_t **l2cache; 3116185029Spjd uint_t i, j, nl2cache; 3117185029Spjd nvlist_t *nvroot; 3118185029Spjd uint64_t guid; 3119185029Spjd vdev_t *vd; 3120185029Spjd vdev_stat_t *vs; 3121185029Spjd uint_t vsc; 3122185029Spjd 3123209962Smm ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); 3124209962Smm 3125185029Spjd if (spa->spa_l2cache.sav_count == 0) 3126185029Spjd return; 3127185029Spjd 3128185029Spjd VERIFY(nvlist_lookup_nvlist(config, 3129185029Spjd ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3130185029Spjd VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, 3131185029Spjd ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); 3132185029Spjd if (nl2cache != 0) { 3133185029Spjd VERIFY(nvlist_add_nvlist_array(nvroot, 3134185029Spjd ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); 3135185029Spjd VERIFY(nvlist_lookup_nvlist_array(nvroot, 3136185029Spjd ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); 3137185029Spjd 3138185029Spjd /* 3139185029Spjd * Update level 2 cache device stats. 3140185029Spjd */ 3141185029Spjd 3142185029Spjd for (i = 0; i < nl2cache; i++) { 3143185029Spjd VERIFY(nvlist_lookup_uint64(l2cache[i], 3144185029Spjd ZPOOL_CONFIG_GUID, &guid) == 0); 3145185029Spjd 3146185029Spjd vd = NULL; 3147185029Spjd for (j = 0; j < spa->spa_l2cache.sav_count; j++) { 3148185029Spjd if (guid == 3149185029Spjd spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { 3150185029Spjd vd = spa->spa_l2cache.sav_vdevs[j]; 3151185029Spjd break; 3152185029Spjd } 3153185029Spjd } 3154185029Spjd ASSERT(vd != NULL); 3155185029Spjd 3156185029Spjd VERIFY(nvlist_lookup_uint64_array(l2cache[i], 3157219089Spjd ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) 3158219089Spjd == 0); 3159185029Spjd vdev_get_stats(vd, vs); 3160185029Spjd } 3161185029Spjd } 3162185029Spjd} 3163185029Spjd 3164236884Smmstatic void 3165236884Smmspa_add_feature_stats(spa_t *spa, nvlist_t *config) 3166236884Smm{ 3167236884Smm nvlist_t *features; 3168236884Smm zap_cursor_t zc; 3169236884Smm zap_attribute_t za; 3170236884Smm 3171236884Smm ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); 3172236884Smm VERIFY(nvlist_alloc(&features, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3173236884Smm 3174253993Smav /* We may be unable to read features if pool is suspended. */ 3175253993Smav if (spa_suspended(spa)) 3176253993Smav goto out; 3177253993Smav 3178236884Smm if (spa->spa_feat_for_read_obj != 0) { 3179236884Smm for (zap_cursor_init(&zc, spa->spa_meta_objset, 3180236884Smm spa->spa_feat_for_read_obj); 3181236884Smm zap_cursor_retrieve(&zc, &za) == 0; 3182236884Smm zap_cursor_advance(&zc)) { 3183236884Smm ASSERT(za.za_integer_length == sizeof (uint64_t) && 3184236884Smm za.za_num_integers == 1); 3185236884Smm VERIFY3U(0, ==, nvlist_add_uint64(features, za.za_name, 3186236884Smm za.za_first_integer)); 3187236884Smm } 3188236884Smm zap_cursor_fini(&zc); 3189236884Smm } 3190236884Smm 3191236884Smm if (spa->spa_feat_for_write_obj != 0) { 3192236884Smm for (zap_cursor_init(&zc, spa->spa_meta_objset, 3193236884Smm spa->spa_feat_for_write_obj); 3194236884Smm zap_cursor_retrieve(&zc, &za) == 0; 3195236884Smm zap_cursor_advance(&zc)) { 3196236884Smm ASSERT(za.za_integer_length == sizeof (uint64_t) && 3197236884Smm za.za_num_integers == 1); 3198236884Smm VERIFY3U(0, ==, nvlist_add_uint64(features, za.za_name, 3199236884Smm za.za_first_integer)); 3200236884Smm } 3201236884Smm zap_cursor_fini(&zc); 3202236884Smm } 3203236884Smm 3204253993Smavout: 3205236884Smm VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS, 3206236884Smm features) == 0); 3207236884Smm nvlist_free(features); 3208236884Smm} 3209236884Smm 3210168404Spjdint 3211236884Smmspa_get_stats(const char *name, nvlist_t **config, 3212236884Smm char *altroot, size_t buflen) 3213168404Spjd{ 3214168404Spjd int error; 3215168404Spjd spa_t *spa; 3216168404Spjd 3217168404Spjd *config = NULL; 3218219089Spjd error = spa_open_common(name, &spa, FTAG, NULL, config); 3219168404Spjd 3220209962Smm if (spa != NULL) { 3221209962Smm /* 3222209962Smm * This still leaves a window of inconsistency where the spares 3223209962Smm * or l2cache devices could change and the config would be 3224209962Smm * self-inconsistent. 3225209962Smm */ 3226209962Smm spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 3227168404Spjd 3228209962Smm if (*config != NULL) { 3229219089Spjd uint64_t loadtimes[2]; 3230219089Spjd 3231219089Spjd loadtimes[0] = spa->spa_loaded_ts.tv_sec; 3232219089Spjd loadtimes[1] = spa->spa_loaded_ts.tv_nsec; 3233219089Spjd VERIFY(nvlist_add_uint64_array(*config, 3234219089Spjd ZPOOL_CONFIG_LOADED_TIME, loadtimes, 2) == 0); 3235219089Spjd 3236185029Spjd VERIFY(nvlist_add_uint64(*config, 3237209962Smm ZPOOL_CONFIG_ERRCOUNT, 3238209962Smm spa_get_errlog_size(spa)) == 0); 3239185029Spjd 3240209962Smm if (spa_suspended(spa)) 3241209962Smm VERIFY(nvlist_add_uint64(*config, 3242209962Smm ZPOOL_CONFIG_SUSPENDED, 3243209962Smm spa->spa_failmode) == 0); 3244209962Smm 3245209962Smm spa_add_spares(spa, *config); 3246209962Smm spa_add_l2cache(spa, *config); 3247236884Smm spa_add_feature_stats(spa, *config); 3248209962Smm } 3249168404Spjd } 3250168404Spjd 3251168404Spjd /* 3252168404Spjd * We want to get the alternate root even for faulted pools, so we cheat 3253168404Spjd * and call spa_lookup() directly. 3254168404Spjd */ 3255168404Spjd if (altroot) { 3256168404Spjd if (spa == NULL) { 3257168404Spjd mutex_enter(&spa_namespace_lock); 3258168404Spjd spa = spa_lookup(name); 3259168404Spjd if (spa) 3260168404Spjd spa_altroot(spa, altroot, buflen); 3261168404Spjd else 3262168404Spjd altroot[0] = '\0'; 3263168404Spjd spa = NULL; 3264168404Spjd mutex_exit(&spa_namespace_lock); 3265168404Spjd } else { 3266168404Spjd spa_altroot(spa, altroot, buflen); 3267168404Spjd } 3268168404Spjd } 3269168404Spjd 3270209962Smm if (spa != NULL) { 3271209962Smm spa_config_exit(spa, SCL_CONFIG, FTAG); 3272168404Spjd spa_close(spa, FTAG); 3273209962Smm } 3274168404Spjd 3275168404Spjd return (error); 3276168404Spjd} 3277168404Spjd 3278168404Spjd/* 3279185029Spjd * Validate that the auxiliary device array is well formed. We must have an 3280185029Spjd * array of nvlists, each which describes a valid leaf vdev. If this is an 3281185029Spjd * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be 3282185029Spjd * specified, as long as they are well-formed. 3283168404Spjd */ 3284168404Spjdstatic int 3285185029Spjdspa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, 3286185029Spjd spa_aux_vdev_t *sav, const char *config, uint64_t version, 3287185029Spjd vdev_labeltype_t label) 3288168404Spjd{ 3289185029Spjd nvlist_t **dev; 3290185029Spjd uint_t i, ndev; 3291168404Spjd vdev_t *vd; 3292168404Spjd int error; 3293168404Spjd 3294185029Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 3295185029Spjd 3296168404Spjd /* 3297185029Spjd * It's acceptable to have no devs specified. 3298168404Spjd */ 3299185029Spjd if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) 3300168404Spjd return (0); 3301168404Spjd 3302185029Spjd if (ndev == 0) 3303249195Smm return (SET_ERROR(EINVAL)); 3304168404Spjd 3305168404Spjd /* 3306185029Spjd * Make sure the pool is formatted with a version that supports this 3307185029Spjd * device type. 3308168404Spjd */ 3309185029Spjd if (spa_version(spa) < version) 3310249195Smm return (SET_ERROR(ENOTSUP)); 3311168404Spjd 3312168404Spjd /* 3313185029Spjd * Set the pending device list so we correctly handle device in-use 3314168404Spjd * checking. 3315168404Spjd */ 3316185029Spjd sav->sav_pending = dev; 3317185029Spjd sav->sav_npending = ndev; 3318168404Spjd 3319185029Spjd for (i = 0; i < ndev; i++) { 3320185029Spjd if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, 3321168404Spjd mode)) != 0) 3322168404Spjd goto out; 3323168404Spjd 3324168404Spjd if (!vd->vdev_ops->vdev_op_leaf) { 3325168404Spjd vdev_free(vd); 3326249195Smm error = SET_ERROR(EINVAL); 3327168404Spjd goto out; 3328168404Spjd } 3329168404Spjd 3330185029Spjd /* 3331185029Spjd * The L2ARC currently only supports disk devices in 3332185029Spjd * kernel context. For user-level testing, we allow it. 3333185029Spjd */ 3334185029Spjd#ifdef _KERNEL 3335185029Spjd if ((strcmp(config, ZPOOL_CONFIG_L2CACHE) == 0) && 3336185029Spjd strcmp(vd->vdev_ops->vdev_op_type, VDEV_TYPE_DISK) != 0) { 3337249195Smm error = SET_ERROR(ENOTBLK); 3338230514Smm vdev_free(vd); 3339185029Spjd goto out; 3340185029Spjd } 3341185029Spjd#endif 3342168404Spjd vd->vdev_top = vd; 3343168404Spjd 3344168404Spjd if ((error = vdev_open(vd)) == 0 && 3345185029Spjd (error = vdev_label_init(vd, crtxg, label)) == 0) { 3346185029Spjd VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, 3347168404Spjd vd->vdev_guid) == 0); 3348168404Spjd } 3349168404Spjd 3350168404Spjd vdev_free(vd); 3351168404Spjd 3352185029Spjd if (error && 3353185029Spjd (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) 3354168404Spjd goto out; 3355168404Spjd else 3356168404Spjd error = 0; 3357168404Spjd } 3358168404Spjd 3359168404Spjdout: 3360185029Spjd sav->sav_pending = NULL; 3361185029Spjd sav->sav_npending = 0; 3362168404Spjd return (error); 3363168404Spjd} 3364168404Spjd 3365185029Spjdstatic int 3366185029Spjdspa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) 3367185029Spjd{ 3368185029Spjd int error; 3369185029Spjd 3370185029Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 3371185029Spjd 3372185029Spjd if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, 3373185029Spjd &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, 3374185029Spjd VDEV_LABEL_SPARE)) != 0) { 3375185029Spjd return (error); 3376185029Spjd } 3377185029Spjd 3378185029Spjd return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, 3379185029Spjd &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, 3380185029Spjd VDEV_LABEL_L2CACHE)); 3381185029Spjd} 3382185029Spjd 3383185029Spjdstatic void 3384185029Spjdspa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, 3385185029Spjd const char *config) 3386185029Spjd{ 3387185029Spjd int i; 3388185029Spjd 3389185029Spjd if (sav->sav_config != NULL) { 3390185029Spjd nvlist_t **olddevs; 3391185029Spjd uint_t oldndevs; 3392185029Spjd nvlist_t **newdevs; 3393185029Spjd 3394185029Spjd /* 3395185029Spjd * Generate new dev list by concatentating with the 3396185029Spjd * current dev list. 3397185029Spjd */ 3398185029Spjd VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, 3399185029Spjd &olddevs, &oldndevs) == 0); 3400185029Spjd 3401185029Spjd newdevs = kmem_alloc(sizeof (void *) * 3402185029Spjd (ndevs + oldndevs), KM_SLEEP); 3403185029Spjd for (i = 0; i < oldndevs; i++) 3404185029Spjd VERIFY(nvlist_dup(olddevs[i], &newdevs[i], 3405185029Spjd KM_SLEEP) == 0); 3406185029Spjd for (i = 0; i < ndevs; i++) 3407185029Spjd VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], 3408185029Spjd KM_SLEEP) == 0); 3409185029Spjd 3410185029Spjd VERIFY(nvlist_remove(sav->sav_config, config, 3411185029Spjd DATA_TYPE_NVLIST_ARRAY) == 0); 3412185029Spjd 3413185029Spjd VERIFY(nvlist_add_nvlist_array(sav->sav_config, 3414185029Spjd config, newdevs, ndevs + oldndevs) == 0); 3415185029Spjd for (i = 0; i < oldndevs + ndevs; i++) 3416185029Spjd nvlist_free(newdevs[i]); 3417185029Spjd kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); 3418185029Spjd } else { 3419185029Spjd /* 3420185029Spjd * Generate a new dev list. 3421185029Spjd */ 3422185029Spjd VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, 3423185029Spjd KM_SLEEP) == 0); 3424185029Spjd VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, 3425185029Spjd devs, ndevs) == 0); 3426185029Spjd } 3427185029Spjd} 3428185029Spjd 3429168404Spjd/* 3430185029Spjd * Stop and drop level 2 ARC devices 3431185029Spjd */ 3432185029Spjdvoid 3433185029Spjdspa_l2cache_drop(spa_t *spa) 3434185029Spjd{ 3435185029Spjd vdev_t *vd; 3436185029Spjd int i; 3437185029Spjd spa_aux_vdev_t *sav = &spa->spa_l2cache; 3438185029Spjd 3439185029Spjd for (i = 0; i < sav->sav_count; i++) { 3440185029Spjd uint64_t pool; 3441185029Spjd 3442185029Spjd vd = sav->sav_vdevs[i]; 3443185029Spjd ASSERT(vd != NULL); 3444185029Spjd 3445209962Smm if (spa_l2cache_exists(vd->vdev_guid, &pool) && 3446209962Smm pool != 0ULL && l2arc_vdev_present(vd)) 3447185029Spjd l2arc_remove_vdev(vd); 3448185029Spjd } 3449185029Spjd} 3450185029Spjd 3451185029Spjd/* 3452168404Spjd * Pool Creation 3453168404Spjd */ 3454168404Spjdint 3455185029Spjdspa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, 3456248571Smm nvlist_t *zplprops) 3457168404Spjd{ 3458168404Spjd spa_t *spa; 3459185029Spjd char *altroot = NULL; 3460168404Spjd vdev_t *rvd; 3461168404Spjd dsl_pool_t *dp; 3462168404Spjd dmu_tx_t *tx; 3463219089Spjd int error = 0; 3464168404Spjd uint64_t txg = TXG_INITIAL; 3465185029Spjd nvlist_t **spares, **l2cache; 3466185029Spjd uint_t nspares, nl2cache; 3467219089Spjd uint64_t version, obj; 3468236884Smm boolean_t has_features; 3469168404Spjd 3470168404Spjd /* 3471168404Spjd * If this pool already exists, return failure. 3472168404Spjd */ 3473168404Spjd mutex_enter(&spa_namespace_lock); 3474168404Spjd if (spa_lookup(pool) != NULL) { 3475168404Spjd mutex_exit(&spa_namespace_lock); 3476249195Smm return (SET_ERROR(EEXIST)); 3477168404Spjd } 3478168404Spjd 3479168404Spjd /* 3480168404Spjd * Allocate a new spa_t structure. 3481168404Spjd */ 3482185029Spjd (void) nvlist_lookup_string(props, 3483185029Spjd zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); 3484219089Spjd spa = spa_add(pool, NULL, altroot); 3485209962Smm spa_activate(spa, spa_mode_global); 3486168404Spjd 3487185029Spjd if (props && (error = spa_prop_validate(spa, props))) { 3488185029Spjd spa_deactivate(spa); 3489185029Spjd spa_remove(spa); 3490185029Spjd mutex_exit(&spa_namespace_lock); 3491185029Spjd return (error); 3492185029Spjd } 3493185029Spjd 3494236884Smm has_features = B_FALSE; 3495236884Smm for (nvpair_t *elem = nvlist_next_nvpair(props, NULL); 3496236884Smm elem != NULL; elem = nvlist_next_nvpair(props, elem)) { 3497236884Smm if (zpool_prop_feature(nvpair_name(elem))) 3498236884Smm has_features = B_TRUE; 3499236884Smm } 3500236884Smm 3501236884Smm if (has_features || nvlist_lookup_uint64(props, 3502236884Smm zpool_prop_to_name(ZPOOL_PROP_VERSION), &version) != 0) { 3503185029Spjd version = SPA_VERSION; 3504236884Smm } 3505236884Smm ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 3506219089Spjd 3507219089Spjd spa->spa_first_txg = txg; 3508219089Spjd spa->spa_uberblock.ub_txg = txg - 1; 3509185029Spjd spa->spa_uberblock.ub_version = version; 3510168404Spjd spa->spa_ubsync = spa->spa_uberblock; 3511168404Spjd 3512168404Spjd /* 3513209962Smm * Create "The Godfather" zio to hold all async IOs 3514209962Smm */ 3515209962Smm spa->spa_async_zio_root = zio_root(spa, NULL, NULL, 3516209962Smm ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_GODFATHER); 3517209962Smm 3518209962Smm /* 3519168404Spjd * Create the root vdev. 3520168404Spjd */ 3521185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 3522168404Spjd 3523168404Spjd error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); 3524168404Spjd 3525168404Spjd ASSERT(error != 0 || rvd != NULL); 3526168404Spjd ASSERT(error != 0 || spa->spa_root_vdev == rvd); 3527168404Spjd 3528185029Spjd if (error == 0 && !zfs_allocatable_devs(nvroot)) 3529249195Smm error = SET_ERROR(EINVAL); 3530168404Spjd 3531168404Spjd if (error == 0 && 3532168404Spjd (error = vdev_create(rvd, txg, B_FALSE)) == 0 && 3533185029Spjd (error = spa_validate_aux(spa, nvroot, txg, 3534168404Spjd VDEV_ALLOC_ADD)) == 0) { 3535219089Spjd for (int c = 0; c < rvd->vdev_children; c++) { 3536254591Sgibbs vdev_ashift_optimize(rvd->vdev_child[c]); 3537219089Spjd vdev_metaslab_set_size(rvd->vdev_child[c]); 3538219089Spjd vdev_expand(rvd->vdev_child[c], txg); 3539219089Spjd } 3540168404Spjd } 3541168404Spjd 3542185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 3543168404Spjd 3544168404Spjd if (error != 0) { 3545168404Spjd spa_unload(spa); 3546168404Spjd spa_deactivate(spa); 3547168404Spjd spa_remove(spa); 3548168404Spjd mutex_exit(&spa_namespace_lock); 3549168404Spjd return (error); 3550168404Spjd } 3551168404Spjd 3552168404Spjd /* 3553168404Spjd * Get the list of spares, if specified. 3554168404Spjd */ 3555168404Spjd if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 3556168404Spjd &spares, &nspares) == 0) { 3557185029Spjd VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, 3558168404Spjd KM_SLEEP) == 0); 3559185029Spjd VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, 3560168404Spjd ZPOOL_CONFIG_SPARES, spares, nspares) == 0); 3561185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 3562168404Spjd spa_load_spares(spa); 3563185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 3564185029Spjd spa->spa_spares.sav_sync = B_TRUE; 3565168404Spjd } 3566168404Spjd 3567185029Spjd /* 3568185029Spjd * Get the list of level 2 cache devices, if specified. 3569185029Spjd */ 3570185029Spjd if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 3571185029Spjd &l2cache, &nl2cache) == 0) { 3572185029Spjd VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, 3573185029Spjd NV_UNIQUE_NAME, KM_SLEEP) == 0); 3574185029Spjd VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, 3575185029Spjd ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); 3576185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 3577185029Spjd spa_load_l2cache(spa); 3578185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 3579185029Spjd spa->spa_l2cache.sav_sync = B_TRUE; 3580185029Spjd } 3581185029Spjd 3582236884Smm spa->spa_is_initializing = B_TRUE; 3583185029Spjd spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, txg); 3584168404Spjd spa->spa_meta_objset = dp->dp_meta_objset; 3585236884Smm spa->spa_is_initializing = B_FALSE; 3586168404Spjd 3587219089Spjd /* 3588219089Spjd * Create DDTs (dedup tables). 3589219089Spjd */ 3590219089Spjd ddt_create(spa); 3591219089Spjd 3592219089Spjd spa_update_dspace(spa); 3593219089Spjd 3594168404Spjd tx = dmu_tx_create_assigned(dp, txg); 3595168404Spjd 3596168404Spjd /* 3597168404Spjd * Create the pool config object. 3598168404Spjd */ 3599168404Spjd spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, 3600185029Spjd DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, 3601168404Spjd DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); 3602168404Spjd 3603168404Spjd if (zap_add(spa->spa_meta_objset, 3604168404Spjd DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, 3605168404Spjd sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { 3606168404Spjd cmn_err(CE_PANIC, "failed to add pool config"); 3607168404Spjd } 3608168404Spjd 3609236884Smm if (spa_version(spa) >= SPA_VERSION_FEATURES) 3610236884Smm spa_feature_create_zap_objects(spa, tx); 3611236884Smm 3612219089Spjd if (zap_add(spa->spa_meta_objset, 3613219089Spjd DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION, 3614219089Spjd sizeof (uint64_t), 1, &version, tx) != 0) { 3615219089Spjd cmn_err(CE_PANIC, "failed to add pool version"); 3616219089Spjd } 3617219089Spjd 3618185029Spjd /* Newly created pools with the right version are always deflated. */ 3619185029Spjd if (version >= SPA_VERSION_RAIDZ_DEFLATE) { 3620185029Spjd spa->spa_deflate = TRUE; 3621185029Spjd if (zap_add(spa->spa_meta_objset, 3622185029Spjd DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, 3623185029Spjd sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { 3624185029Spjd cmn_err(CE_PANIC, "failed to add deflate"); 3625185029Spjd } 3626168404Spjd } 3627168404Spjd 3628168404Spjd /* 3629219089Spjd * Create the deferred-free bpobj. Turn off compression 3630168404Spjd * because sync-to-convergence takes longer if the blocksize 3631168404Spjd * keeps changing. 3632168404Spjd */ 3633219089Spjd obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx); 3634219089Spjd dmu_object_set_compress(spa->spa_meta_objset, obj, 3635168404Spjd ZIO_COMPRESS_OFF, tx); 3636168404Spjd if (zap_add(spa->spa_meta_objset, 3637219089Spjd DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ, 3638219089Spjd sizeof (uint64_t), 1, &obj, tx) != 0) { 3639219089Spjd cmn_err(CE_PANIC, "failed to add bpobj"); 3640168404Spjd } 3641219089Spjd VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj, 3642219089Spjd spa->spa_meta_objset, obj)); 3643168404Spjd 3644168404Spjd /* 3645168404Spjd * Create the pool's history object. 3646168404Spjd */ 3647185029Spjd if (version >= SPA_VERSION_ZPOOL_HISTORY) 3648185029Spjd spa_history_create_obj(spa, tx); 3649168404Spjd 3650185029Spjd /* 3651185029Spjd * Set pool properties. 3652185029Spjd */ 3653185029Spjd spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); 3654185029Spjd spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); 3655185029Spjd spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); 3656219089Spjd spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND); 3657219089Spjd 3658209962Smm if (props != NULL) { 3659209962Smm spa_configfile_set(spa, props, B_FALSE); 3660248571Smm spa_sync_props(props, tx); 3661209962Smm } 3662185029Spjd 3663168404Spjd dmu_tx_commit(tx); 3664168404Spjd 3665168404Spjd spa->spa_sync_on = B_TRUE; 3666168404Spjd txg_sync_start(spa->spa_dsl_pool); 3667168404Spjd 3668168404Spjd /* 3669168404Spjd * We explicitly wait for the first transaction to complete so that our 3670168404Spjd * bean counters are appropriately updated. 3671168404Spjd */ 3672168404Spjd txg_wait_synced(spa->spa_dsl_pool, txg); 3673168404Spjd 3674185029Spjd spa_config_sync(spa, B_FALSE, B_TRUE); 3675168404Spjd 3676248571Smm spa_history_log_version(spa, "create"); 3677185029Spjd 3678208442Smm spa->spa_minref = refcount_count(&spa->spa_refcount); 3679208442Smm 3680168404Spjd mutex_exit(&spa_namespace_lock); 3681168404Spjd 3682168404Spjd return (0); 3683168404Spjd} 3684168404Spjd 3685241286Savg#ifdef _KERNEL 3686219089Spjd#if defined(sun) 3687185029Spjd/* 3688219089Spjd * Get the root pool information from the root disk, then import the root pool 3689219089Spjd * during the system boot up time. 3690185029Spjd */ 3691219089Spjdextern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **); 3692219089Spjd 3693219089Spjdstatic nvlist_t * 3694219089Spjdspa_generate_rootconf(char *devpath, char *devid, uint64_t *guid) 3695185029Spjd{ 3696219089Spjd nvlist_t *config; 3697185029Spjd nvlist_t *nvtop, *nvroot; 3698185029Spjd uint64_t pgid; 3699185029Spjd 3700219089Spjd if (vdev_disk_read_rootlabel(devpath, devid, &config) != 0) 3701219089Spjd return (NULL); 3702219089Spjd 3703168404Spjd /* 3704185029Spjd * Add this top-level vdev to the child array. 3705168404Spjd */ 3706219089Spjd VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 3707219089Spjd &nvtop) == 0); 3708219089Spjd VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 3709219089Spjd &pgid) == 0); 3710219089Spjd VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, guid) == 0); 3711168404Spjd 3712185029Spjd /* 3713185029Spjd * Put this pool's top-level vdevs into a root vdev. 3714185029Spjd */ 3715185029Spjd VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3716219089Spjd VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, 3717219089Spjd VDEV_TYPE_ROOT) == 0); 3718185029Spjd VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); 3719185029Spjd VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); 3720185029Spjd VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 3721185029Spjd &nvtop, 1) == 0); 3722168404Spjd 3723168404Spjd /* 3724185029Spjd * Replace the existing vdev_tree with the new root vdev in 3725185029Spjd * this pool's configuration (remove the old, add the new). 3726168404Spjd */ 3727185029Spjd VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); 3728185029Spjd nvlist_free(nvroot); 3729219089Spjd return (config); 3730185029Spjd} 3731168404Spjd 3732185029Spjd/* 3733219089Spjd * Walk the vdev tree and see if we can find a device with "better" 3734219089Spjd * configuration. A configuration is "better" if the label on that 3735219089Spjd * device has a more recent txg. 3736185029Spjd */ 3737219089Spjdstatic void 3738219089Spjdspa_alt_rootvdev(vdev_t *vd, vdev_t **avd, uint64_t *txg) 3739185029Spjd{ 3740219089Spjd for (int c = 0; c < vd->vdev_children; c++) 3741219089Spjd spa_alt_rootvdev(vd->vdev_child[c], avd, txg); 3742185029Spjd 3743219089Spjd if (vd->vdev_ops->vdev_op_leaf) { 3744219089Spjd nvlist_t *label; 3745219089Spjd uint64_t label_txg; 3746185029Spjd 3747219089Spjd if (vdev_disk_read_rootlabel(vd->vdev_physpath, vd->vdev_devid, 3748219089Spjd &label) != 0) 3749219089Spjd return; 3750185029Spjd 3751219089Spjd VERIFY(nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_TXG, 3752219089Spjd &label_txg) == 0); 3753168404Spjd 3754219089Spjd /* 3755219089Spjd * Do we have a better boot device? 3756219089Spjd */ 3757219089Spjd if (label_txg > *txg) { 3758219089Spjd *txg = label_txg; 3759219089Spjd *avd = vd; 3760185029Spjd } 3761219089Spjd nvlist_free(label); 3762185029Spjd } 3763185029Spjd} 3764185029Spjd 3765185029Spjd/* 3766185029Spjd * Import a root pool. 3767185029Spjd * 3768185029Spjd * For x86. devpath_list will consist of devid and/or physpath name of 3769185029Spjd * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a"). 3770185029Spjd * The GRUB "findroot" command will return the vdev we should boot. 3771185029Spjd * 3772185029Spjd * For Sparc, devpath_list consists the physpath name of the booting device 3773185029Spjd * no matter the rootpool is a single device pool or a mirrored pool. 3774185029Spjd * e.g. 3775185029Spjd * "/pci@1f,0/ide@d/disk@0,0:a" 3776185029Spjd */ 3777185029Spjdint 3778185029Spjdspa_import_rootpool(char *devpath, char *devid) 3779185029Spjd{ 3780219089Spjd spa_t *spa; 3781219089Spjd vdev_t *rvd, *bvd, *avd = NULL; 3782219089Spjd nvlist_t *config, *nvtop; 3783219089Spjd uint64_t guid, txg; 3784185029Spjd char *pname; 3785185029Spjd int error; 3786185029Spjd 3787185029Spjd /* 3788219089Spjd * Read the label from the boot device and generate a configuration. 3789185029Spjd */ 3790219089Spjd config = spa_generate_rootconf(devpath, devid, &guid); 3791219089Spjd#if defined(_OBP) && defined(_KERNEL) 3792219089Spjd if (config == NULL) { 3793219089Spjd if (strstr(devpath, "/iscsi/ssd") != NULL) { 3794219089Spjd /* iscsi boot */ 3795219089Spjd get_iscsi_bootpath_phy(devpath); 3796219089Spjd config = spa_generate_rootconf(devpath, devid, &guid); 3797219089Spjd } 3798219089Spjd } 3799219089Spjd#endif 3800219089Spjd if (config == NULL) { 3801236884Smm cmn_err(CE_NOTE, "Cannot read the pool label from '%s'", 3802219089Spjd devpath); 3803249195Smm return (SET_ERROR(EIO)); 3804219089Spjd } 3805185029Spjd 3806219089Spjd VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 3807219089Spjd &pname) == 0); 3808219089Spjd VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0); 3809185029Spjd 3810209962Smm mutex_enter(&spa_namespace_lock); 3811209962Smm if ((spa = spa_lookup(pname)) != NULL) { 3812209962Smm /* 3813209962Smm * Remove the existing root pool from the namespace so that we 3814209962Smm * can replace it with the correct config we just read in. 3815209962Smm */ 3816209962Smm spa_remove(spa); 3817209962Smm } 3818185029Spjd 3819219089Spjd spa = spa_add(pname, config, NULL); 3820209962Smm spa->spa_is_root = B_TRUE; 3821219089Spjd spa->spa_import_flags = ZFS_IMPORT_VERBATIM; 3822209962Smm 3823219089Spjd /* 3824219089Spjd * Build up a vdev tree based on the boot device's label config. 3825219089Spjd */ 3826219089Spjd VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 3827219089Spjd &nvtop) == 0); 3828219089Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 3829219089Spjd error = spa_config_parse(spa, &rvd, nvtop, NULL, 0, 3830219089Spjd VDEV_ALLOC_ROOTPOOL); 3831219089Spjd spa_config_exit(spa, SCL_ALL, FTAG); 3832219089Spjd if (error) { 3833209962Smm mutex_exit(&spa_namespace_lock); 3834219089Spjd nvlist_free(config); 3835219089Spjd cmn_err(CE_NOTE, "Can not parse the config for pool '%s'", 3836219089Spjd pname); 3837219089Spjd return (error); 3838209962Smm } 3839209962Smm 3840219089Spjd /* 3841219089Spjd * Get the boot vdev. 3842219089Spjd */ 3843219089Spjd if ((bvd = vdev_lookup_by_guid(rvd, guid)) == NULL) { 3844219089Spjd cmn_err(CE_NOTE, "Can not find the boot vdev for guid %llu", 3845219089Spjd (u_longlong_t)guid); 3846249195Smm error = SET_ERROR(ENOENT); 3847219089Spjd goto out; 3848219089Spjd } 3849209962Smm 3850219089Spjd /* 3851219089Spjd * Determine if there is a better boot device. 3852219089Spjd */ 3853219089Spjd avd = bvd; 3854219089Spjd spa_alt_rootvdev(rvd, &avd, &txg); 3855219089Spjd if (avd != bvd) { 3856219089Spjd cmn_err(CE_NOTE, "The boot device is 'degraded'. Please " 3857219089Spjd "try booting from '%s'", avd->vdev_path); 3858249195Smm error = SET_ERROR(EINVAL); 3859219089Spjd goto out; 3860219089Spjd } 3861209962Smm 3862219089Spjd /* 3863219089Spjd * If the boot device is part of a spare vdev then ensure that 3864219089Spjd * we're booting off the active spare. 3865219089Spjd */ 3866219089Spjd if (bvd->vdev_parent->vdev_ops == &vdev_spare_ops && 3867219089Spjd !bvd->vdev_isspare) { 3868219089Spjd cmn_err(CE_NOTE, "The boot device is currently spared. Please " 3869219089Spjd "try booting from '%s'", 3870219089Spjd bvd->vdev_parent-> 3871219089Spjd vdev_child[bvd->vdev_parent->vdev_children - 1]->vdev_path); 3872249195Smm error = SET_ERROR(EINVAL); 3873219089Spjd goto out; 3874219089Spjd } 3875209962Smm 3876219089Spjd error = 0; 3877219089Spjdout: 3878219089Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 3879219089Spjd vdev_free(rvd); 3880219089Spjd spa_config_exit(spa, SCL_ALL, FTAG); 3881209962Smm mutex_exit(&spa_namespace_lock); 3882209962Smm 3883219089Spjd nvlist_free(config); 3884219089Spjd return (error); 3885185029Spjd} 3886185029Spjd 3887241286Savg#else 3888241286Savg 3889243502Savgextern int vdev_geom_read_pool_label(const char *name, nvlist_t ***configs, 3890243502Savg uint64_t *count); 3891241286Savg 3892241286Savgstatic nvlist_t * 3893241286Savgspa_generate_rootconf(const char *name) 3894241286Savg{ 3895243502Savg nvlist_t **configs, **tops; 3896241286Savg nvlist_t *config; 3897243502Savg nvlist_t *best_cfg, *nvtop, *nvroot; 3898243502Savg uint64_t *holes; 3899243502Savg uint64_t best_txg; 3900243213Savg uint64_t nchildren; 3901241286Savg uint64_t pgid; 3902243502Savg uint64_t count; 3903243502Savg uint64_t i; 3904243502Savg uint_t nholes; 3905241286Savg 3906243502Savg if (vdev_geom_read_pool_label(name, &configs, &count) != 0) 3907241286Savg return (NULL); 3908241286Savg 3909243502Savg ASSERT3U(count, !=, 0); 3910243502Savg best_txg = 0; 3911243502Savg for (i = 0; i < count; i++) { 3912243502Savg uint64_t txg; 3913243502Savg 3914243502Savg VERIFY(nvlist_lookup_uint64(configs[i], ZPOOL_CONFIG_POOL_TXG, 3915243502Savg &txg) == 0); 3916243502Savg if (txg > best_txg) { 3917243502Savg best_txg = txg; 3918243502Savg best_cfg = configs[i]; 3919243502Savg } 3920243502Savg } 3921243502Savg 3922241286Savg /* 3923243213Savg * Multi-vdev root pool configuration discovery is not supported yet. 3924243213Savg */ 3925245945Savg nchildren = 1; 3926245945Savg nvlist_lookup_uint64(best_cfg, ZPOOL_CONFIG_VDEV_CHILDREN, &nchildren); 3927243502Savg holes = NULL; 3928243502Savg nvlist_lookup_uint64_array(best_cfg, ZPOOL_CONFIG_HOLE_ARRAY, 3929243502Savg &holes, &nholes); 3930243502Savg 3931244635Savg tops = kmem_zalloc(nchildren * sizeof(void *), KM_SLEEP); 3932243502Savg for (i = 0; i < nchildren; i++) { 3933243502Savg if (i >= count) 3934243502Savg break; 3935243502Savg if (configs[i] == NULL) 3936243502Savg continue; 3937243502Savg VERIFY(nvlist_lookup_nvlist(configs[i], ZPOOL_CONFIG_VDEV_TREE, 3938243502Savg &nvtop) == 0); 3939243502Savg nvlist_dup(nvtop, &tops[i], KM_SLEEP); 3940243213Savg } 3941243502Savg for (i = 0; holes != NULL && i < nholes; i++) { 3942243502Savg if (i >= nchildren) 3943243502Savg continue; 3944243502Savg if (tops[holes[i]] != NULL) 3945243502Savg continue; 3946243502Savg nvlist_alloc(&tops[holes[i]], NV_UNIQUE_NAME, KM_SLEEP); 3947243502Savg VERIFY(nvlist_add_string(tops[holes[i]], ZPOOL_CONFIG_TYPE, 3948243502Savg VDEV_TYPE_HOLE) == 0); 3949243502Savg VERIFY(nvlist_add_uint64(tops[holes[i]], ZPOOL_CONFIG_ID, 3950243502Savg holes[i]) == 0); 3951243502Savg VERIFY(nvlist_add_uint64(tops[holes[i]], ZPOOL_CONFIG_GUID, 3952243502Savg 0) == 0); 3953243502Savg } 3954243502Savg for (i = 0; i < nchildren; i++) { 3955243502Savg if (tops[i] != NULL) 3956243502Savg continue; 3957243502Savg nvlist_alloc(&tops[i], NV_UNIQUE_NAME, KM_SLEEP); 3958243502Savg VERIFY(nvlist_add_string(tops[i], ZPOOL_CONFIG_TYPE, 3959243502Savg VDEV_TYPE_MISSING) == 0); 3960243502Savg VERIFY(nvlist_add_uint64(tops[i], ZPOOL_CONFIG_ID, 3961243502Savg i) == 0); 3962243502Savg VERIFY(nvlist_add_uint64(tops[i], ZPOOL_CONFIG_GUID, 3963243502Savg 0) == 0); 3964243502Savg } 3965243213Savg 3966243213Savg /* 3967243502Savg * Create pool config based on the best vdev config. 3968241286Savg */ 3969243502Savg nvlist_dup(best_cfg, &config, KM_SLEEP); 3970241286Savg 3971241286Savg /* 3972241286Savg * Put this pool's top-level vdevs into a root vdev. 3973241286Savg */ 3974243502Savg VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 3975243502Savg &pgid) == 0); 3976241286Savg VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3977241286Savg VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, 3978241286Savg VDEV_TYPE_ROOT) == 0); 3979241286Savg VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); 3980241286Savg VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); 3981241286Savg VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 3982243502Savg tops, nchildren) == 0); 3983241286Savg 3984241286Savg /* 3985241286Savg * Replace the existing vdev_tree with the new root vdev in 3986241286Savg * this pool's configuration (remove the old, add the new). 3987241286Savg */ 3988241286Savg VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); 3989243502Savg 3990243502Savg /* 3991243502Savg * Drop vdev config elements that should not be present at pool level. 3992243502Savg */ 3993243502Savg nvlist_remove(config, ZPOOL_CONFIG_GUID, DATA_TYPE_UINT64); 3994243502Savg nvlist_remove(config, ZPOOL_CONFIG_TOP_GUID, DATA_TYPE_UINT64); 3995243502Savg 3996243502Savg for (i = 0; i < count; i++) 3997243502Savg nvlist_free(configs[i]); 3998243502Savg kmem_free(configs, count * sizeof(void *)); 3999243502Savg for (i = 0; i < nchildren; i++) 4000243502Savg nvlist_free(tops[i]); 4001243502Savg kmem_free(tops, nchildren * sizeof(void *)); 4002241286Savg nvlist_free(nvroot); 4003241286Savg return (config); 4004241286Savg} 4005241286Savg 4006241286Savgint 4007241286Savgspa_import_rootpool(const char *name) 4008241286Savg{ 4009241286Savg spa_t *spa; 4010241286Savg vdev_t *rvd, *bvd, *avd = NULL; 4011241286Savg nvlist_t *config, *nvtop; 4012241286Savg uint64_t txg; 4013241286Savg char *pname; 4014241286Savg int error; 4015241286Savg 4016241286Savg /* 4017241286Savg * Read the label from the boot device and generate a configuration. 4018241286Savg */ 4019241286Savg config = spa_generate_rootconf(name); 4020243213Savg 4021243213Savg mutex_enter(&spa_namespace_lock); 4022243213Savg if (config != NULL) { 4023243213Savg VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 4024243213Savg &pname) == 0 && strcmp(name, pname) == 0); 4025243213Savg VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) 4026243213Savg == 0); 4027243213Savg 4028243213Savg if ((spa = spa_lookup(pname)) != NULL) { 4029243213Savg /* 4030243213Savg * Remove the existing root pool from the namespace so 4031243213Savg * that we can replace it with the correct config 4032243213Savg * we just read in. 4033243213Savg */ 4034243213Savg spa_remove(spa); 4035243213Savg } 4036243213Savg spa = spa_add(pname, config, NULL); 4037243501Savg 4038243501Savg /* 4039243501Savg * Set spa_ubsync.ub_version as it can be used in vdev_alloc() 4040243501Savg * via spa_version(). 4041243501Savg */ 4042243501Savg if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 4043243501Savg &spa->spa_ubsync.ub_version) != 0) 4044243501Savg spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; 4045243213Savg } else if ((spa = spa_lookup(name)) == NULL) { 4046241286Savg cmn_err(CE_NOTE, "Cannot find the pool label for '%s'", 4047241286Savg name); 4048241286Savg return (EIO); 4049243213Savg } else { 4050243213Savg VERIFY(nvlist_dup(spa->spa_config, &config, KM_SLEEP) == 0); 4051241286Savg } 4052241286Savg spa->spa_is_root = B_TRUE; 4053241286Savg spa->spa_import_flags = ZFS_IMPORT_VERBATIM; 4054241286Savg 4055241286Savg /* 4056241286Savg * Build up a vdev tree based on the boot device's label config. 4057241286Savg */ 4058241286Savg VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4059241286Savg &nvtop) == 0); 4060241286Savg spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4061241286Savg error = spa_config_parse(spa, &rvd, nvtop, NULL, 0, 4062241286Savg VDEV_ALLOC_ROOTPOOL); 4063241286Savg spa_config_exit(spa, SCL_ALL, FTAG); 4064241286Savg if (error) { 4065241286Savg mutex_exit(&spa_namespace_lock); 4066241286Savg nvlist_free(config); 4067241286Savg cmn_err(CE_NOTE, "Can not parse the config for pool '%s'", 4068241286Savg pname); 4069241286Savg return (error); 4070241286Savg } 4071241286Savg 4072241286Savg spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4073241286Savg vdev_free(rvd); 4074241286Savg spa_config_exit(spa, SCL_ALL, FTAG); 4075241286Savg mutex_exit(&spa_namespace_lock); 4076241286Savg 4077243213Savg nvlist_free(config); 4078243213Savg return (0); 4079241286Savg} 4080241286Savg 4081241286Savg#endif /* sun */ 4082219089Spjd#endif 4083219089Spjd 4084209962Smm/* 4085209962Smm * Import a non-root pool into the system. 4086209962Smm */ 4087185029Spjdint 4088219089Spjdspa_import(const char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) 4089185029Spjd{ 4090209962Smm spa_t *spa; 4091209962Smm char *altroot = NULL; 4092219089Spjd spa_load_state_t state = SPA_LOAD_IMPORT; 4093219089Spjd zpool_rewind_policy_t policy; 4094219089Spjd uint64_t mode = spa_mode_global; 4095219089Spjd uint64_t readonly = B_FALSE; 4096209962Smm int error; 4097209962Smm nvlist_t *nvroot; 4098209962Smm nvlist_t **spares, **l2cache; 4099209962Smm uint_t nspares, nl2cache; 4100209962Smm 4101209962Smm /* 4102209962Smm * If a pool with this name exists, return failure. 4103209962Smm */ 4104209962Smm mutex_enter(&spa_namespace_lock); 4105219089Spjd if (spa_lookup(pool) != NULL) { 4106209962Smm mutex_exit(&spa_namespace_lock); 4107249195Smm return (SET_ERROR(EEXIST)); 4108209962Smm } 4109209962Smm 4110209962Smm /* 4111209962Smm * Create and initialize the spa structure. 4112209962Smm */ 4113209962Smm (void) nvlist_lookup_string(props, 4114209962Smm zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); 4115219089Spjd (void) nvlist_lookup_uint64(props, 4116219089Spjd zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly); 4117219089Spjd if (readonly) 4118219089Spjd mode = FREAD; 4119219089Spjd spa = spa_add(pool, config, altroot); 4120219089Spjd spa->spa_import_flags = flags; 4121209962Smm 4122209962Smm /* 4123219089Spjd * Verbatim import - Take a pool and insert it into the namespace 4124219089Spjd * as if it had been loaded at boot. 4125219089Spjd */ 4126219089Spjd if (spa->spa_import_flags & ZFS_IMPORT_VERBATIM) { 4127219089Spjd if (props != NULL) 4128219089Spjd spa_configfile_set(spa, props, B_FALSE); 4129219089Spjd 4130219089Spjd spa_config_sync(spa, B_FALSE, B_TRUE); 4131219089Spjd 4132219089Spjd mutex_exit(&spa_namespace_lock); 4133219089Spjd return (0); 4134219089Spjd } 4135219089Spjd 4136219089Spjd spa_activate(spa, mode); 4137219089Spjd 4138219089Spjd /* 4139209962Smm * Don't start async tasks until we know everything is healthy. 4140209962Smm */ 4141209962Smm spa_async_suspend(spa); 4142209962Smm 4143219089Spjd zpool_get_rewind_policy(config, &policy); 4144219089Spjd if (policy.zrp_request & ZPOOL_DO_REWIND) 4145219089Spjd state = SPA_LOAD_RECOVER; 4146219089Spjd 4147209962Smm /* 4148209962Smm * Pass off the heavy lifting to spa_load(). Pass TRUE for mosconfig 4149209962Smm * because the user-supplied config is actually the one to trust when 4150209962Smm * doing an import. 4151209962Smm */ 4152219089Spjd if (state != SPA_LOAD_RECOVER) 4153219089Spjd spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; 4154209962Smm 4155219089Spjd error = spa_load_best(spa, state, B_TRUE, policy.zrp_txg, 4156219089Spjd policy.zrp_request); 4157219089Spjd 4158219089Spjd /* 4159219089Spjd * Propagate anything learned while loading the pool and pass it 4160219089Spjd * back to caller (i.e. rewind info, missing devices, etc). 4161219089Spjd */ 4162219089Spjd VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, 4163219089Spjd spa->spa_load_info) == 0); 4164219089Spjd 4165209962Smm spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4166209962Smm /* 4167209962Smm * Toss any existing sparelist, as it doesn't have any validity 4168209962Smm * anymore, and conflicts with spa_has_spare(). 4169209962Smm */ 4170209962Smm if (spa->spa_spares.sav_config) { 4171209962Smm nvlist_free(spa->spa_spares.sav_config); 4172209962Smm spa->spa_spares.sav_config = NULL; 4173209962Smm spa_load_spares(spa); 4174209962Smm } 4175209962Smm if (spa->spa_l2cache.sav_config) { 4176209962Smm nvlist_free(spa->spa_l2cache.sav_config); 4177209962Smm spa->spa_l2cache.sav_config = NULL; 4178209962Smm spa_load_l2cache(spa); 4179209962Smm } 4180209962Smm 4181209962Smm VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4182209962Smm &nvroot) == 0); 4183209962Smm if (error == 0) 4184209962Smm error = spa_validate_aux(spa, nvroot, -1ULL, 4185209962Smm VDEV_ALLOC_SPARE); 4186209962Smm if (error == 0) 4187209962Smm error = spa_validate_aux(spa, nvroot, -1ULL, 4188209962Smm VDEV_ALLOC_L2CACHE); 4189209962Smm spa_config_exit(spa, SCL_ALL, FTAG); 4190209962Smm 4191209962Smm if (props != NULL) 4192209962Smm spa_configfile_set(spa, props, B_FALSE); 4193209962Smm 4194209962Smm if (error != 0 || (props && spa_writeable(spa) && 4195209962Smm (error = spa_prop_set(spa, props)))) { 4196209962Smm spa_unload(spa); 4197209962Smm spa_deactivate(spa); 4198209962Smm spa_remove(spa); 4199209962Smm mutex_exit(&spa_namespace_lock); 4200209962Smm return (error); 4201209962Smm } 4202209962Smm 4203209962Smm spa_async_resume(spa); 4204209962Smm 4205209962Smm /* 4206209962Smm * Override any spares and level 2 cache devices as specified by 4207209962Smm * the user, as these may have correct device names/devids, etc. 4208209962Smm */ 4209209962Smm if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 4210209962Smm &spares, &nspares) == 0) { 4211209962Smm if (spa->spa_spares.sav_config) 4212209962Smm VERIFY(nvlist_remove(spa->spa_spares.sav_config, 4213209962Smm ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); 4214209962Smm else 4215209962Smm VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, 4216209962Smm NV_UNIQUE_NAME, KM_SLEEP) == 0); 4217209962Smm VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, 4218209962Smm ZPOOL_CONFIG_SPARES, spares, nspares) == 0); 4219209962Smm spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4220209962Smm spa_load_spares(spa); 4221209962Smm spa_config_exit(spa, SCL_ALL, FTAG); 4222209962Smm spa->spa_spares.sav_sync = B_TRUE; 4223209962Smm } 4224209962Smm if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 4225209962Smm &l2cache, &nl2cache) == 0) { 4226209962Smm if (spa->spa_l2cache.sav_config) 4227209962Smm VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, 4228209962Smm ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); 4229209962Smm else 4230209962Smm VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, 4231209962Smm NV_UNIQUE_NAME, KM_SLEEP) == 0); 4232209962Smm VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, 4233209962Smm ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); 4234209962Smm spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4235209962Smm spa_load_l2cache(spa); 4236209962Smm spa_config_exit(spa, SCL_ALL, FTAG); 4237209962Smm spa->spa_l2cache.sav_sync = B_TRUE; 4238209962Smm } 4239209962Smm 4240219089Spjd /* 4241219089Spjd * Check for any removed devices. 4242219089Spjd */ 4243219089Spjd if (spa->spa_autoreplace) { 4244219089Spjd spa_aux_check_removed(&spa->spa_spares); 4245219089Spjd spa_aux_check_removed(&spa->spa_l2cache); 4246219089Spjd } 4247219089Spjd 4248209962Smm if (spa_writeable(spa)) { 4249209962Smm /* 4250209962Smm * Update the config cache to include the newly-imported pool. 4251209962Smm */ 4252209962Smm spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); 4253209962Smm } 4254209962Smm 4255219089Spjd /* 4256219089Spjd * It's possible that the pool was expanded while it was exported. 4257219089Spjd * We kick off an async task to handle this for us. 4258219089Spjd */ 4259219089Spjd spa_async_request(spa, SPA_ASYNC_AUTOEXPAND); 4260219089Spjd 4261209962Smm mutex_exit(&spa_namespace_lock); 4262248571Smm spa_history_log_version(spa, "import"); 4263209962Smm 4264219089Spjd#ifdef __FreeBSD__ 4265219089Spjd#ifdef _KERNEL 4266219089Spjd zvol_create_minors(pool); 4267219089Spjd#endif 4268219089Spjd#endif 4269209962Smm return (0); 4270185029Spjd} 4271185029Spjd 4272168404Spjdnvlist_t * 4273168404Spjdspa_tryimport(nvlist_t *tryconfig) 4274168404Spjd{ 4275168404Spjd nvlist_t *config = NULL; 4276168404Spjd char *poolname; 4277168404Spjd spa_t *spa; 4278168404Spjd uint64_t state; 4279208443Smm int error; 4280168404Spjd 4281168404Spjd if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) 4282168404Spjd return (NULL); 4283168404Spjd 4284168404Spjd if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) 4285168404Spjd return (NULL); 4286168404Spjd 4287168404Spjd /* 4288168404Spjd * Create and initialize the spa structure. 4289168404Spjd */ 4290168404Spjd mutex_enter(&spa_namespace_lock); 4291219089Spjd spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL); 4292209962Smm spa_activate(spa, FREAD); 4293168404Spjd 4294168404Spjd /* 4295168404Spjd * Pass off the heavy lifting to spa_load(). 4296168404Spjd * Pass TRUE for mosconfig because the user-supplied config 4297168404Spjd * is actually the one to trust when doing an import. 4298168404Spjd */ 4299219089Spjd error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING, B_TRUE); 4300168404Spjd 4301168404Spjd /* 4302168404Spjd * If 'tryconfig' was at least parsable, return the current config. 4303168404Spjd */ 4304168404Spjd if (spa->spa_root_vdev != NULL) { 4305168404Spjd config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); 4306168404Spjd VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, 4307168404Spjd poolname) == 0); 4308168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, 4309168404Spjd state) == 0); 4310168498Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, 4311168498Spjd spa->spa_uberblock.ub_timestamp) == 0); 4312236884Smm VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, 4313236884Smm spa->spa_load_info) == 0); 4314168404Spjd 4315168404Spjd /* 4316185029Spjd * If the bootfs property exists on this pool then we 4317185029Spjd * copy it out so that external consumers can tell which 4318185029Spjd * pools are bootable. 4319168404Spjd */ 4320208443Smm if ((!error || error == EEXIST) && spa->spa_bootfs) { 4321185029Spjd char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); 4322185029Spjd 4323185029Spjd /* 4324185029Spjd * We have to play games with the name since the 4325185029Spjd * pool was opened as TRYIMPORT_NAME. 4326185029Spjd */ 4327185029Spjd if (dsl_dsobj_to_dsname(spa_name(spa), 4328185029Spjd spa->spa_bootfs, tmpname) == 0) { 4329185029Spjd char *cp; 4330185029Spjd char *dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); 4331185029Spjd 4332185029Spjd cp = strchr(tmpname, '/'); 4333185029Spjd if (cp == NULL) { 4334185029Spjd (void) strlcpy(dsname, tmpname, 4335185029Spjd MAXPATHLEN); 4336185029Spjd } else { 4337185029Spjd (void) snprintf(dsname, MAXPATHLEN, 4338185029Spjd "%s/%s", poolname, ++cp); 4339185029Spjd } 4340185029Spjd VERIFY(nvlist_add_string(config, 4341185029Spjd ZPOOL_CONFIG_BOOTFS, dsname) == 0); 4342185029Spjd kmem_free(dsname, MAXPATHLEN); 4343185029Spjd } 4344185029Spjd kmem_free(tmpname, MAXPATHLEN); 4345185029Spjd } 4346185029Spjd 4347185029Spjd /* 4348185029Spjd * Add the list of hot spares and level 2 cache devices. 4349185029Spjd */ 4350209962Smm spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 4351168404Spjd spa_add_spares(spa, config); 4352185029Spjd spa_add_l2cache(spa, config); 4353209962Smm spa_config_exit(spa, SCL_CONFIG, FTAG); 4354168404Spjd } 4355168404Spjd 4356168404Spjd spa_unload(spa); 4357168404Spjd spa_deactivate(spa); 4358168404Spjd spa_remove(spa); 4359168404Spjd mutex_exit(&spa_namespace_lock); 4360168404Spjd 4361168404Spjd return (config); 4362168404Spjd} 4363168404Spjd 4364168404Spjd/* 4365168404Spjd * Pool export/destroy 4366168404Spjd * 4367168404Spjd * The act of destroying or exporting a pool is very simple. We make sure there 4368168404Spjd * is no more pending I/O and any references to the pool are gone. Then, we 4369168404Spjd * update the pool state and sync all the labels to disk, removing the 4370207670Smm * configuration from the cache afterwards. If the 'hardforce' flag is set, then 4371207670Smm * we don't sync the labels or remove the configuration cache. 4372168404Spjd */ 4373168404Spjdstatic int 4374185029Spjdspa_export_common(char *pool, int new_state, nvlist_t **oldconfig, 4375207670Smm boolean_t force, boolean_t hardforce) 4376168404Spjd{ 4377168404Spjd spa_t *spa; 4378168404Spjd 4379168404Spjd if (oldconfig) 4380168404Spjd *oldconfig = NULL; 4381168404Spjd 4382209962Smm if (!(spa_mode_global & FWRITE)) 4383249195Smm return (SET_ERROR(EROFS)); 4384168404Spjd 4385168404Spjd mutex_enter(&spa_namespace_lock); 4386168404Spjd if ((spa = spa_lookup(pool)) == NULL) { 4387168404Spjd mutex_exit(&spa_namespace_lock); 4388249195Smm return (SET_ERROR(ENOENT)); 4389168404Spjd } 4390168404Spjd 4391168404Spjd /* 4392168404Spjd * Put a hold on the pool, drop the namespace lock, stop async tasks, 4393168404Spjd * reacquire the namespace lock, and see if we can export. 4394168404Spjd */ 4395168404Spjd spa_open_ref(spa, FTAG); 4396168404Spjd mutex_exit(&spa_namespace_lock); 4397168404Spjd spa_async_suspend(spa); 4398168404Spjd mutex_enter(&spa_namespace_lock); 4399168404Spjd spa_close(spa, FTAG); 4400168404Spjd 4401168404Spjd /* 4402168404Spjd * The pool will be in core if it's openable, 4403168404Spjd * in which case we can modify its state. 4404168404Spjd */ 4405168404Spjd if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { 4406168404Spjd /* 4407168404Spjd * Objsets may be open only because they're dirty, so we 4408168404Spjd * have to force it to sync before checking spa_refcnt. 4409168404Spjd */ 4410168404Spjd txg_wait_synced(spa->spa_dsl_pool, 0); 4411168404Spjd 4412168404Spjd /* 4413168404Spjd * A pool cannot be exported or destroyed if there are active 4414168404Spjd * references. If we are resetting a pool, allow references by 4415168404Spjd * fault injection handlers. 4416168404Spjd */ 4417168404Spjd if (!spa_refcount_zero(spa) || 4418168404Spjd (spa->spa_inject_ref != 0 && 4419168404Spjd new_state != POOL_STATE_UNINITIALIZED)) { 4420168404Spjd spa_async_resume(spa); 4421168404Spjd mutex_exit(&spa_namespace_lock); 4422249195Smm return (SET_ERROR(EBUSY)); 4423168404Spjd } 4424168404Spjd 4425185029Spjd /* 4426185029Spjd * A pool cannot be exported if it has an active shared spare. 4427185029Spjd * This is to prevent other pools stealing the active spare 4428185029Spjd * from an exported pool. At user's own will, such pool can 4429185029Spjd * be forcedly exported. 4430185029Spjd */ 4431185029Spjd if (!force && new_state == POOL_STATE_EXPORTED && 4432185029Spjd spa_has_active_shared_spare(spa)) { 4433185029Spjd spa_async_resume(spa); 4434185029Spjd mutex_exit(&spa_namespace_lock); 4435249195Smm return (SET_ERROR(EXDEV)); 4436185029Spjd } 4437168404Spjd 4438168404Spjd /* 4439168404Spjd * We want this to be reflected on every label, 4440168404Spjd * so mark them all dirty. spa_unload() will do the 4441168404Spjd * final sync that pushes these changes out. 4442168404Spjd */ 4443207670Smm if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { 4444185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4445168404Spjd spa->spa_state = new_state; 4446219089Spjd spa->spa_final_txg = spa_last_synced_txg(spa) + 4447219089Spjd TXG_DEFER_SIZE + 1; 4448168404Spjd vdev_config_dirty(spa->spa_root_vdev); 4449185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 4450168404Spjd } 4451168404Spjd } 4452168404Spjd 4453185029Spjd spa_event_notify(spa, NULL, ESC_ZFS_POOL_DESTROY); 4454185029Spjd 4455168404Spjd if (spa->spa_state != POOL_STATE_UNINITIALIZED) { 4456168404Spjd spa_unload(spa); 4457168404Spjd spa_deactivate(spa); 4458168404Spjd } 4459168404Spjd 4460168404Spjd if (oldconfig && spa->spa_config) 4461168404Spjd VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); 4462168404Spjd 4463168404Spjd if (new_state != POOL_STATE_UNINITIALIZED) { 4464207670Smm if (!hardforce) 4465207670Smm spa_config_sync(spa, B_TRUE, B_TRUE); 4466168404Spjd spa_remove(spa); 4467168404Spjd } 4468168404Spjd mutex_exit(&spa_namespace_lock); 4469168404Spjd 4470168404Spjd return (0); 4471168404Spjd} 4472168404Spjd 4473168404Spjd/* 4474168404Spjd * Destroy a storage pool. 4475168404Spjd */ 4476168404Spjdint 4477168404Spjdspa_destroy(char *pool) 4478168404Spjd{ 4479207670Smm return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, 4480207670Smm B_FALSE, B_FALSE)); 4481168404Spjd} 4482168404Spjd 4483168404Spjd/* 4484168404Spjd * Export a storage pool. 4485168404Spjd */ 4486168404Spjdint 4487207670Smmspa_export(char *pool, nvlist_t **oldconfig, boolean_t force, 4488207670Smm boolean_t hardforce) 4489168404Spjd{ 4490207670Smm return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, 4491207670Smm force, hardforce)); 4492168404Spjd} 4493168404Spjd 4494168404Spjd/* 4495168404Spjd * Similar to spa_export(), this unloads the spa_t without actually removing it 4496168404Spjd * from the namespace in any way. 4497168404Spjd */ 4498168404Spjdint 4499168404Spjdspa_reset(char *pool) 4500168404Spjd{ 4501185029Spjd return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, 4502207670Smm B_FALSE, B_FALSE)); 4503168404Spjd} 4504168404Spjd 4505168404Spjd/* 4506168404Spjd * ========================================================================== 4507168404Spjd * Device manipulation 4508168404Spjd * ========================================================================== 4509168404Spjd */ 4510168404Spjd 4511168404Spjd/* 4512185029Spjd * Add a device to a storage pool. 4513168404Spjd */ 4514168404Spjdint 4515168404Spjdspa_vdev_add(spa_t *spa, nvlist_t *nvroot) 4516168404Spjd{ 4517219089Spjd uint64_t txg, id; 4518209962Smm int error; 4519168404Spjd vdev_t *rvd = spa->spa_root_vdev; 4520168404Spjd vdev_t *vd, *tvd; 4521185029Spjd nvlist_t **spares, **l2cache; 4522185029Spjd uint_t nspares, nl2cache; 4523168404Spjd 4524219089Spjd ASSERT(spa_writeable(spa)); 4525219089Spjd 4526168404Spjd txg = spa_vdev_enter(spa); 4527168404Spjd 4528168404Spjd if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, 4529168404Spjd VDEV_ALLOC_ADD)) != 0) 4530168404Spjd return (spa_vdev_exit(spa, NULL, txg, error)); 4531168404Spjd 4532185029Spjd spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ 4533168404Spjd 4534185029Spjd if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, 4535185029Spjd &nspares) != 0) 4536168404Spjd nspares = 0; 4537168404Spjd 4538185029Spjd if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, 4539185029Spjd &nl2cache) != 0) 4540185029Spjd nl2cache = 0; 4541185029Spjd 4542185029Spjd if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) 4543168404Spjd return (spa_vdev_exit(spa, vd, txg, EINVAL)); 4544168404Spjd 4545185029Spjd if (vd->vdev_children != 0 && 4546185029Spjd (error = vdev_create(vd, txg, B_FALSE)) != 0) 4547185029Spjd return (spa_vdev_exit(spa, vd, txg, error)); 4548168404Spjd 4549168404Spjd /* 4550185029Spjd * We must validate the spares and l2cache devices after checking the 4551185029Spjd * children. Otherwise, vdev_inuse() will blindly overwrite the spare. 4552168404Spjd */ 4553185029Spjd if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) 4554168404Spjd return (spa_vdev_exit(spa, vd, txg, error)); 4555168404Spjd 4556168404Spjd /* 4557168404Spjd * Transfer each new top-level vdev from vd to rvd. 4558168404Spjd */ 4559209962Smm for (int c = 0; c < vd->vdev_children; c++) { 4560219089Spjd 4561219089Spjd /* 4562219089Spjd * Set the vdev id to the first hole, if one exists. 4563219089Spjd */ 4564219089Spjd for (id = 0; id < rvd->vdev_children; id++) { 4565219089Spjd if (rvd->vdev_child[id]->vdev_ishole) { 4566219089Spjd vdev_free(rvd->vdev_child[id]); 4567219089Spjd break; 4568219089Spjd } 4569219089Spjd } 4570168404Spjd tvd = vd->vdev_child[c]; 4571168404Spjd vdev_remove_child(vd, tvd); 4572219089Spjd tvd->vdev_id = id; 4573168404Spjd vdev_add_child(rvd, tvd); 4574168404Spjd vdev_config_dirty(tvd); 4575168404Spjd } 4576168404Spjd 4577168404Spjd if (nspares != 0) { 4578185029Spjd spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, 4579185029Spjd ZPOOL_CONFIG_SPARES); 4580168404Spjd spa_load_spares(spa); 4581185029Spjd spa->spa_spares.sav_sync = B_TRUE; 4582168404Spjd } 4583168404Spjd 4584185029Spjd if (nl2cache != 0) { 4585185029Spjd spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, 4586185029Spjd ZPOOL_CONFIG_L2CACHE); 4587185029Spjd spa_load_l2cache(spa); 4588185029Spjd spa->spa_l2cache.sav_sync = B_TRUE; 4589185029Spjd } 4590185029Spjd 4591168404Spjd /* 4592168404Spjd * We have to be careful when adding new vdevs to an existing pool. 4593168404Spjd * If other threads start allocating from these vdevs before we 4594168404Spjd * sync the config cache, and we lose power, then upon reboot we may 4595168404Spjd * fail to open the pool because there are DVAs that the config cache 4596168404Spjd * can't translate. Therefore, we first add the vdevs without 4597168404Spjd * initializing metaslabs; sync the config cache (via spa_vdev_exit()); 4598168404Spjd * and then let spa_config_update() initialize the new metaslabs. 4599168404Spjd * 4600168404Spjd * spa_load() checks for added-but-not-initialized vdevs, so that 4601168404Spjd * if we lose power at any point in this sequence, the remaining 4602168404Spjd * steps will be completed the next time we load the pool. 4603168404Spjd */ 4604168404Spjd (void) spa_vdev_exit(spa, vd, txg, 0); 4605168404Spjd 4606168404Spjd mutex_enter(&spa_namespace_lock); 4607168404Spjd spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); 4608168404Spjd mutex_exit(&spa_namespace_lock); 4609168404Spjd 4610168404Spjd return (0); 4611168404Spjd} 4612168404Spjd 4613168404Spjd/* 4614168404Spjd * Attach a device to a mirror. The arguments are the path to any device 4615168404Spjd * in the mirror, and the nvroot for the new device. If the path specifies 4616168404Spjd * a device that is not mirrored, we automatically insert the mirror vdev. 4617168404Spjd * 4618168404Spjd * If 'replacing' is specified, the new device is intended to replace the 4619168404Spjd * existing device; in this case the two devices are made into their own 4620185029Spjd * mirror using the 'replacing' vdev, which is functionally identical to 4621168404Spjd * the mirror vdev (it actually reuses all the same ops) but has a few 4622168404Spjd * extra rules: you can't attach to it after it's been created, and upon 4623168404Spjd * completion of resilvering, the first disk (the one being replaced) 4624168404Spjd * is automatically detached. 4625168404Spjd */ 4626168404Spjdint 4627168404Spjdspa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) 4628168404Spjd{ 4629219089Spjd uint64_t txg, dtl_max_txg; 4630168404Spjd vdev_t *rvd = spa->spa_root_vdev; 4631168404Spjd vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; 4632168404Spjd vdev_ops_t *pvops; 4633185029Spjd char *oldvdpath, *newvdpath; 4634185029Spjd int newvd_isspare; 4635185029Spjd int error; 4636168404Spjd 4637219089Spjd ASSERT(spa_writeable(spa)); 4638219089Spjd 4639168404Spjd txg = spa_vdev_enter(spa); 4640168404Spjd 4641185029Spjd oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); 4642168404Spjd 4643168404Spjd if (oldvd == NULL) 4644168404Spjd return (spa_vdev_exit(spa, NULL, txg, ENODEV)); 4645168404Spjd 4646168404Spjd if (!oldvd->vdev_ops->vdev_op_leaf) 4647168404Spjd return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); 4648168404Spjd 4649168404Spjd pvd = oldvd->vdev_parent; 4650168404Spjd 4651168404Spjd if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, 4652230514Smm VDEV_ALLOC_ATTACH)) != 0) 4653185029Spjd return (spa_vdev_exit(spa, NULL, txg, EINVAL)); 4654185029Spjd 4655185029Spjd if (newrootvd->vdev_children != 1) 4656168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); 4657168404Spjd 4658168404Spjd newvd = newrootvd->vdev_child[0]; 4659168404Spjd 4660168404Spjd if (!newvd->vdev_ops->vdev_op_leaf) 4661168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); 4662168404Spjd 4663168404Spjd if ((error = vdev_create(newrootvd, txg, replacing)) != 0) 4664168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, error)); 4665168404Spjd 4666185029Spjd /* 4667185029Spjd * Spares can't replace logs 4668185029Spjd */ 4669185029Spjd if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) 4670185029Spjd return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); 4671185029Spjd 4672168404Spjd if (!replacing) { 4673168404Spjd /* 4674168404Spjd * For attach, the only allowable parent is a mirror or the root 4675168404Spjd * vdev. 4676168404Spjd */ 4677168404Spjd if (pvd->vdev_ops != &vdev_mirror_ops && 4678168404Spjd pvd->vdev_ops != &vdev_root_ops) 4679168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); 4680168404Spjd 4681168404Spjd pvops = &vdev_mirror_ops; 4682168404Spjd } else { 4683168404Spjd /* 4684168404Spjd * Active hot spares can only be replaced by inactive hot 4685168404Spjd * spares. 4686168404Spjd */ 4687168404Spjd if (pvd->vdev_ops == &vdev_spare_ops && 4688219089Spjd oldvd->vdev_isspare && 4689168404Spjd !spa_has_spare(spa, newvd->vdev_guid)) 4690168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); 4691168404Spjd 4692168404Spjd /* 4693168404Spjd * If the source is a hot spare, and the parent isn't already a 4694168404Spjd * spare, then we want to create a new hot spare. Otherwise, we 4695168404Spjd * want to create a replacing vdev. The user is not allowed to 4696168404Spjd * attach to a spared vdev child unless the 'isspare' state is 4697168404Spjd * the same (spare replaces spare, non-spare replaces 4698168404Spjd * non-spare). 4699168404Spjd */ 4700219089Spjd if (pvd->vdev_ops == &vdev_replacing_ops && 4701219089Spjd spa_version(spa) < SPA_VERSION_MULTI_REPLACE) { 4702168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); 4703219089Spjd } else if (pvd->vdev_ops == &vdev_spare_ops && 4704219089Spjd newvd->vdev_isspare != oldvd->vdev_isspare) { 4705168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); 4706219089Spjd } 4707219089Spjd 4708219089Spjd if (newvd->vdev_isspare) 4709168404Spjd pvops = &vdev_spare_ops; 4710168404Spjd else 4711168404Spjd pvops = &vdev_replacing_ops; 4712168404Spjd } 4713168404Spjd 4714168404Spjd /* 4715219089Spjd * Make sure the new device is big enough. 4716168404Spjd */ 4717219089Spjd if (newvd->vdev_asize < vdev_get_min_asize(oldvd)) 4718168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); 4719168404Spjd 4720168404Spjd /* 4721168404Spjd * The new device cannot have a higher alignment requirement 4722168404Spjd * than the top-level vdev. 4723168404Spjd */ 4724168404Spjd if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) 4725168404Spjd return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); 4726168404Spjd 4727168404Spjd /* 4728168404Spjd * If this is an in-place replacement, update oldvd's path and devid 4729168404Spjd * to make it distinguishable from newvd, and unopenable from now on. 4730168404Spjd */ 4731168404Spjd if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { 4732168404Spjd spa_strfree(oldvd->vdev_path); 4733168404Spjd oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, 4734168404Spjd KM_SLEEP); 4735168404Spjd (void) sprintf(oldvd->vdev_path, "%s/%s", 4736168404Spjd newvd->vdev_path, "old"); 4737168404Spjd if (oldvd->vdev_devid != NULL) { 4738168404Spjd spa_strfree(oldvd->vdev_devid); 4739168404Spjd oldvd->vdev_devid = NULL; 4740168404Spjd } 4741168404Spjd } 4742168404Spjd 4743219089Spjd /* mark the device being resilvered */ 4744254112Sdelphij newvd->vdev_resilver_txg = txg; 4745219089Spjd 4746168404Spjd /* 4747168404Spjd * If the parent is not a mirror, or if we're replacing, insert the new 4748168404Spjd * mirror/replacing/spare vdev above oldvd. 4749168404Spjd */ 4750168404Spjd if (pvd->vdev_ops != pvops) 4751168404Spjd pvd = vdev_add_parent(oldvd, pvops); 4752168404Spjd 4753168404Spjd ASSERT(pvd->vdev_top->vdev_parent == rvd); 4754168404Spjd ASSERT(pvd->vdev_ops == pvops); 4755168404Spjd ASSERT(oldvd->vdev_parent == pvd); 4756168404Spjd 4757168404Spjd /* 4758168404Spjd * Extract the new device from its root and add it to pvd. 4759168404Spjd */ 4760168404Spjd vdev_remove_child(newrootvd, newvd); 4761168404Spjd newvd->vdev_id = pvd->vdev_children; 4762219089Spjd newvd->vdev_crtxg = oldvd->vdev_crtxg; 4763168404Spjd vdev_add_child(pvd, newvd); 4764168404Spjd 4765168404Spjd tvd = newvd->vdev_top; 4766168404Spjd ASSERT(pvd->vdev_top == tvd); 4767168404Spjd ASSERT(tvd->vdev_parent == rvd); 4768168404Spjd 4769168404Spjd vdev_config_dirty(tvd); 4770168404Spjd 4771168404Spjd /* 4772219089Spjd * Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account 4773219089Spjd * for any dmu_sync-ed blocks. It will propagate upward when 4774219089Spjd * spa_vdev_exit() calls vdev_dtl_reassess(). 4775168404Spjd */ 4776219089Spjd dtl_max_txg = txg + TXG_CONCURRENT_STATES; 4777168404Spjd 4778219089Spjd vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL, 4779219089Spjd dtl_max_txg - TXG_INITIAL); 4780168404Spjd 4781209962Smm if (newvd->vdev_isspare) { 4782168404Spjd spa_spare_activate(newvd); 4783209962Smm spa_event_notify(spa, newvd, ESC_ZFS_VDEV_SPARE); 4784209962Smm } 4785209962Smm 4786185029Spjd oldvdpath = spa_strdup(oldvd->vdev_path); 4787185029Spjd newvdpath = spa_strdup(newvd->vdev_path); 4788185029Spjd newvd_isspare = newvd->vdev_isspare; 4789168404Spjd 4790168404Spjd /* 4791168404Spjd * Mark newvd's DTL dirty in this txg. 4792168404Spjd */ 4793168404Spjd vdev_dirty(tvd, VDD_DTL, newvd, txg); 4794168404Spjd 4795219089Spjd /* 4796258717Savg * Schedule the resilver to restart in the future. We do this to 4797258717Savg * ensure that dmu_sync-ed blocks have been stitched into the 4798258717Savg * respective datasets. 4799219089Spjd */ 4800219089Spjd dsl_resilver_restart(spa->spa_dsl_pool, dtl_max_txg); 4801168404Spjd 4802219089Spjd /* 4803219089Spjd * Commit the config 4804219089Spjd */ 4805219089Spjd (void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0); 4806185029Spjd 4807248571Smm spa_history_log_internal(spa, "vdev attach", NULL, 4808219089Spjd "%s vdev=%s %s vdev=%s", 4809219089Spjd replacing && newvd_isspare ? "spare in" : 4810219089Spjd replacing ? "replace" : "attach", newvdpath, 4811219089Spjd replacing ? "for" : "to", oldvdpath); 4812219089Spjd 4813185029Spjd spa_strfree(oldvdpath); 4814185029Spjd spa_strfree(newvdpath); 4815185029Spjd 4816219089Spjd if (spa->spa_bootfs) 4817219089Spjd spa_event_notify(spa, newvd, ESC_ZFS_BOOTFS_VDEV_ATTACH); 4818168404Spjd 4819168404Spjd return (0); 4820168404Spjd} 4821168404Spjd 4822168404Spjd/* 4823168404Spjd * Detach a device from a mirror or replacing vdev. 4824251631Sdelphij * 4825168404Spjd * If 'replace_done' is specified, only detach if the parent 4826168404Spjd * is a replacing vdev. 4827168404Spjd */ 4828168404Spjdint 4829209962Smmspa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) 4830168404Spjd{ 4831168404Spjd uint64_t txg; 4832209962Smm int error; 4833168404Spjd vdev_t *rvd = spa->spa_root_vdev; 4834168404Spjd vdev_t *vd, *pvd, *cvd, *tvd; 4835168404Spjd boolean_t unspare = B_FALSE; 4836247187Smm uint64_t unspare_guid = 0; 4837219089Spjd char *vdpath; 4838168404Spjd 4839219089Spjd ASSERT(spa_writeable(spa)); 4840219089Spjd 4841168404Spjd txg = spa_vdev_enter(spa); 4842168404Spjd 4843185029Spjd vd = spa_lookup_by_guid(spa, guid, B_FALSE); 4844168404Spjd 4845168404Spjd if (vd == NULL) 4846168404Spjd return (spa_vdev_exit(spa, NULL, txg, ENODEV)); 4847168404Spjd 4848168404Spjd if (!vd->vdev_ops->vdev_op_leaf) 4849168404Spjd return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); 4850168404Spjd 4851168404Spjd pvd = vd->vdev_parent; 4852168404Spjd 4853168404Spjd /* 4854209962Smm * If the parent/child relationship is not as expected, don't do it. 4855209962Smm * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing 4856209962Smm * vdev that's replacing B with C. The user's intent in replacing 4857209962Smm * is to go from M(A,B) to M(A,C). If the user decides to cancel 4858209962Smm * the replace by detaching C, the expected behavior is to end up 4859209962Smm * M(A,B). But suppose that right after deciding to detach C, 4860209962Smm * the replacement of B completes. We would have M(A,C), and then 4861209962Smm * ask to detach C, which would leave us with just A -- not what 4862209962Smm * the user wanted. To prevent this, we make sure that the 4863209962Smm * parent/child relationship hasn't changed -- in this example, 4864209962Smm * that C's parent is still the replacing vdev R. 4865209962Smm */ 4866209962Smm if (pvd->vdev_guid != pguid && pguid != 0) 4867209962Smm return (spa_vdev_exit(spa, NULL, txg, EBUSY)); 4868209962Smm 4869209962Smm /* 4870219089Spjd * Only 'replacing' or 'spare' vdevs can be replaced. 4871168404Spjd */ 4872219089Spjd if (replace_done && pvd->vdev_ops != &vdev_replacing_ops && 4873219089Spjd pvd->vdev_ops != &vdev_spare_ops) 4874219089Spjd return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); 4875168404Spjd 4876168404Spjd ASSERT(pvd->vdev_ops != &vdev_spare_ops || 4877185029Spjd spa_version(spa) >= SPA_VERSION_SPARES); 4878168404Spjd 4879168404Spjd /* 4880168404Spjd * Only mirror, replacing, and spare vdevs support detach. 4881168404Spjd */ 4882168404Spjd if (pvd->vdev_ops != &vdev_replacing_ops && 4883168404Spjd pvd->vdev_ops != &vdev_mirror_ops && 4884168404Spjd pvd->vdev_ops != &vdev_spare_ops) 4885168404Spjd return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); 4886168404Spjd 4887168404Spjd /* 4888209962Smm * If this device has the only valid copy of some data, 4889209962Smm * we cannot safely detach it. 4890168404Spjd */ 4891209962Smm if (vdev_dtl_required(vd)) 4892168404Spjd return (spa_vdev_exit(spa, NULL, txg, EBUSY)); 4893168404Spjd 4894209962Smm ASSERT(pvd->vdev_children >= 2); 4895168404Spjd 4896168404Spjd /* 4897185029Spjd * If we are detaching the second disk from a replacing vdev, then 4898185029Spjd * check to see if we changed the original vdev's path to have "/old" 4899185029Spjd * at the end in spa_vdev_attach(). If so, undo that change now. 4900168404Spjd */ 4901219089Spjd if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id > 0 && 4902219089Spjd vd->vdev_path != NULL) { 4903219089Spjd size_t len = strlen(vd->vdev_path); 4904219089Spjd 4905219089Spjd for (int c = 0; c < pvd->vdev_children; c++) { 4906219089Spjd cvd = pvd->vdev_child[c]; 4907219089Spjd 4908219089Spjd if (cvd == vd || cvd->vdev_path == NULL) 4909219089Spjd continue; 4910219089Spjd 4911219089Spjd if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && 4912219089Spjd strcmp(cvd->vdev_path + len, "/old") == 0) { 4913219089Spjd spa_strfree(cvd->vdev_path); 4914219089Spjd cvd->vdev_path = spa_strdup(vd->vdev_path); 4915219089Spjd break; 4916219089Spjd } 4917185029Spjd } 4918185029Spjd } 4919168404Spjd 4920168404Spjd /* 4921168404Spjd * If we are detaching the original disk from a spare, then it implies 4922168404Spjd * that the spare should become a real disk, and be removed from the 4923168404Spjd * active spare list for the pool. 4924168404Spjd */ 4925168404Spjd if (pvd->vdev_ops == &vdev_spare_ops && 4926219089Spjd vd->vdev_id == 0 && 4927219089Spjd pvd->vdev_child[pvd->vdev_children - 1]->vdev_isspare) 4928168404Spjd unspare = B_TRUE; 4929168404Spjd 4930168404Spjd /* 4931168404Spjd * Erase the disk labels so the disk can be used for other things. 4932168404Spjd * This must be done after all other error cases are handled, 4933168404Spjd * but before we disembowel vd (so we can still do I/O to it). 4934168404Spjd * But if we can't do it, don't treat the error as fatal -- 4935168404Spjd * it may be that the unwritability of the disk is the reason 4936168404Spjd * it's being detached! 4937168404Spjd */ 4938168404Spjd error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); 4939168404Spjd 4940168404Spjd /* 4941168404Spjd * Remove vd from its parent and compact the parent's children. 4942168404Spjd */ 4943168404Spjd vdev_remove_child(pvd, vd); 4944168404Spjd vdev_compact_children(pvd); 4945168404Spjd 4946168404Spjd /* 4947168404Spjd * Remember one of the remaining children so we can get tvd below. 4948168404Spjd */ 4949219089Spjd cvd = pvd->vdev_child[pvd->vdev_children - 1]; 4950168404Spjd 4951168404Spjd /* 4952168404Spjd * If we need to remove the remaining child from the list of hot spares, 4953209962Smm * do it now, marking the vdev as no longer a spare in the process. 4954209962Smm * We must do this before vdev_remove_parent(), because that can 4955209962Smm * change the GUID if it creates a new toplevel GUID. For a similar 4956209962Smm * reason, we must remove the spare now, in the same txg as the detach; 4957209962Smm * otherwise someone could attach a new sibling, change the GUID, and 4958209962Smm * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. 4959168404Spjd */ 4960168404Spjd if (unspare) { 4961168404Spjd ASSERT(cvd->vdev_isspare); 4962168404Spjd spa_spare_remove(cvd); 4963168404Spjd unspare_guid = cvd->vdev_guid; 4964209962Smm (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); 4965219089Spjd cvd->vdev_unspare = B_TRUE; 4966168404Spjd } 4967168404Spjd 4968168404Spjd /* 4969168404Spjd * If the parent mirror/replacing vdev only has one child, 4970168404Spjd * the parent is no longer needed. Remove it from the tree. 4971168404Spjd */ 4972219089Spjd if (pvd->vdev_children == 1) { 4973219089Spjd if (pvd->vdev_ops == &vdev_spare_ops) 4974219089Spjd cvd->vdev_unspare = B_FALSE; 4975168404Spjd vdev_remove_parent(cvd); 4976219089Spjd } 4977168404Spjd 4978219089Spjd 4979168404Spjd /* 4980168404Spjd * We don't set tvd until now because the parent we just removed 4981168404Spjd * may have been the previous top-level vdev. 4982168404Spjd */ 4983168404Spjd tvd = cvd->vdev_top; 4984168404Spjd ASSERT(tvd->vdev_parent == rvd); 4985168404Spjd 4986168404Spjd /* 4987168404Spjd * Reevaluate the parent vdev state. 4988168404Spjd */ 4989185029Spjd vdev_propagate_state(cvd); 4990168404Spjd 4991168404Spjd /* 4992219089Spjd * If the 'autoexpand' property is set on the pool then automatically 4993219089Spjd * try to expand the size of the pool. For example if the device we 4994219089Spjd * just detached was smaller than the others, it may be possible to 4995219089Spjd * add metaslabs (i.e. grow the pool). We need to reopen the vdev 4996219089Spjd * first so that we can obtain the updated sizes of the leaf vdevs. 4997168404Spjd */ 4998219089Spjd if (spa->spa_autoexpand) { 4999219089Spjd vdev_reopen(tvd); 5000219089Spjd vdev_expand(tvd, txg); 5001219089Spjd } 5002168404Spjd 5003168404Spjd vdev_config_dirty(tvd); 5004168404Spjd 5005168404Spjd /* 5006168404Spjd * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that 5007168404Spjd * vd->vdev_detached is set and free vd's DTL object in syncing context. 5008168404Spjd * But first make sure we're not on any *other* txg's DTL list, to 5009168404Spjd * prevent vd from being accessed after it's freed. 5010168404Spjd */ 5011219089Spjd vdpath = spa_strdup(vd->vdev_path); 5012209962Smm for (int t = 0; t < TXG_SIZE; t++) 5013168404Spjd (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); 5014168404Spjd vd->vdev_detached = B_TRUE; 5015168404Spjd vdev_dirty(tvd, VDD_DTL, vd, txg); 5016168404Spjd 5017185029Spjd spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE); 5018185029Spjd 5019219089Spjd /* hang on to the spa before we release the lock */ 5020219089Spjd spa_open_ref(spa, FTAG); 5021219089Spjd 5022168404Spjd error = spa_vdev_exit(spa, vd, txg, 0); 5023168404Spjd 5024248571Smm spa_history_log_internal(spa, "detach", NULL, 5025219089Spjd "vdev=%s", vdpath); 5026219089Spjd spa_strfree(vdpath); 5027219089Spjd 5028168404Spjd /* 5029168404Spjd * If this was the removal of the original device in a hot spare vdev, 5030168404Spjd * then we want to go through and remove the device from the hot spare 5031168404Spjd * list of every other pool. 5032168404Spjd */ 5033168404Spjd if (unspare) { 5034219089Spjd spa_t *altspa = NULL; 5035219089Spjd 5036168404Spjd mutex_enter(&spa_namespace_lock); 5037219089Spjd while ((altspa = spa_next(altspa)) != NULL) { 5038219089Spjd if (altspa->spa_state != POOL_STATE_ACTIVE || 5039219089Spjd altspa == spa) 5040168404Spjd continue; 5041219089Spjd 5042219089Spjd spa_open_ref(altspa, FTAG); 5043185029Spjd mutex_exit(&spa_namespace_lock); 5044219089Spjd (void) spa_vdev_remove(altspa, unspare_guid, B_TRUE); 5045185029Spjd mutex_enter(&spa_namespace_lock); 5046219089Spjd spa_close(altspa, FTAG); 5047168404Spjd } 5048168404Spjd mutex_exit(&spa_namespace_lock); 5049219089Spjd 5050219089Spjd /* search the rest of the vdevs for spares to remove */ 5051219089Spjd spa_vdev_resilver_done(spa); 5052168404Spjd } 5053168404Spjd 5054219089Spjd /* all done with the spa; OK to release */ 5055219089Spjd mutex_enter(&spa_namespace_lock); 5056219089Spjd spa_close(spa, FTAG); 5057219089Spjd mutex_exit(&spa_namespace_lock); 5058219089Spjd 5059168404Spjd return (error); 5060168404Spjd} 5061168404Spjd 5062219089Spjd/* 5063219089Spjd * Split a set of devices from their mirrors, and create a new pool from them. 5064219089Spjd */ 5065219089Spjdint 5066219089Spjdspa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, 5067219089Spjd nvlist_t *props, boolean_t exp) 5068219089Spjd{ 5069219089Spjd int error = 0; 5070219089Spjd uint64_t txg, *glist; 5071219089Spjd spa_t *newspa; 5072219089Spjd uint_t c, children, lastlog; 5073219089Spjd nvlist_t **child, *nvl, *tmp; 5074219089Spjd dmu_tx_t *tx; 5075219089Spjd char *altroot = NULL; 5076219089Spjd vdev_t *rvd, **vml = NULL; /* vdev modify list */ 5077219089Spjd boolean_t activate_slog; 5078219089Spjd 5079219089Spjd ASSERT(spa_writeable(spa)); 5080219089Spjd 5081219089Spjd txg = spa_vdev_enter(spa); 5082219089Spjd 5083219089Spjd /* clear the log and flush everything up to now */ 5084219089Spjd activate_slog = spa_passivate_log(spa); 5085219089Spjd (void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); 5086219089Spjd error = spa_offline_log(spa); 5087219089Spjd txg = spa_vdev_config_enter(spa); 5088219089Spjd 5089219089Spjd if (activate_slog) 5090219089Spjd spa_activate_log(spa); 5091219089Spjd 5092219089Spjd if (error != 0) 5093219089Spjd return (spa_vdev_exit(spa, NULL, txg, error)); 5094219089Spjd 5095219089Spjd /* check new spa name before going any further */ 5096219089Spjd if (spa_lookup(newname) != NULL) 5097219089Spjd return (spa_vdev_exit(spa, NULL, txg, EEXIST)); 5098219089Spjd 5099219089Spjd /* 5100219089Spjd * scan through all the children to ensure they're all mirrors 5101219089Spjd */ 5102219089Spjd if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 || 5103219089Spjd nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child, 5104219089Spjd &children) != 0) 5105219089Spjd return (spa_vdev_exit(spa, NULL, txg, EINVAL)); 5106219089Spjd 5107219089Spjd /* first, check to ensure we've got the right child count */ 5108219089Spjd rvd = spa->spa_root_vdev; 5109219089Spjd lastlog = 0; 5110219089Spjd for (c = 0; c < rvd->vdev_children; c++) { 5111219089Spjd vdev_t *vd = rvd->vdev_child[c]; 5112219089Spjd 5113219089Spjd /* don't count the holes & logs as children */ 5114219089Spjd if (vd->vdev_islog || vd->vdev_ishole) { 5115219089Spjd if (lastlog == 0) 5116219089Spjd lastlog = c; 5117219089Spjd continue; 5118219089Spjd } 5119219089Spjd 5120219089Spjd lastlog = 0; 5121219089Spjd } 5122219089Spjd if (children != (lastlog != 0 ? lastlog : rvd->vdev_children)) 5123219089Spjd return (spa_vdev_exit(spa, NULL, txg, EINVAL)); 5124219089Spjd 5125219089Spjd /* next, ensure no spare or cache devices are part of the split */ 5126219089Spjd if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 || 5127219089Spjd nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0) 5128219089Spjd return (spa_vdev_exit(spa, NULL, txg, EINVAL)); 5129219089Spjd 5130219089Spjd vml = kmem_zalloc(children * sizeof (vdev_t *), KM_SLEEP); 5131219089Spjd glist = kmem_zalloc(children * sizeof (uint64_t), KM_SLEEP); 5132219089Spjd 5133219089Spjd /* then, loop over each vdev and validate it */ 5134219089Spjd for (c = 0; c < children; c++) { 5135219089Spjd uint64_t is_hole = 0; 5136219089Spjd 5137219089Spjd (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 5138219089Spjd &is_hole); 5139219089Spjd 5140219089Spjd if (is_hole != 0) { 5141219089Spjd if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole || 5142219089Spjd spa->spa_root_vdev->vdev_child[c]->vdev_islog) { 5143219089Spjd continue; 5144219089Spjd } else { 5145249195Smm error = SET_ERROR(EINVAL); 5146219089Spjd break; 5147219089Spjd } 5148219089Spjd } 5149219089Spjd 5150219089Spjd /* which disk is going to be split? */ 5151219089Spjd if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID, 5152219089Spjd &glist[c]) != 0) { 5153249195Smm error = SET_ERROR(EINVAL); 5154219089Spjd break; 5155219089Spjd } 5156219089Spjd 5157219089Spjd /* look it up in the spa */ 5158219089Spjd vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE); 5159219089Spjd if (vml[c] == NULL) { 5160249195Smm error = SET_ERROR(ENODEV); 5161219089Spjd break; 5162219089Spjd } 5163219089Spjd 5164219089Spjd /* make sure there's nothing stopping the split */ 5165219089Spjd if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops || 5166219089Spjd vml[c]->vdev_islog || 5167219089Spjd vml[c]->vdev_ishole || 5168219089Spjd vml[c]->vdev_isspare || 5169219089Spjd vml[c]->vdev_isl2cache || 5170219089Spjd !vdev_writeable(vml[c]) || 5171219089Spjd vml[c]->vdev_children != 0 || 5172219089Spjd vml[c]->vdev_state != VDEV_STATE_HEALTHY || 5173219089Spjd c != spa->spa_root_vdev->vdev_child[c]->vdev_id) { 5174249195Smm error = SET_ERROR(EINVAL); 5175219089Spjd break; 5176219089Spjd } 5177219089Spjd 5178219089Spjd if (vdev_dtl_required(vml[c])) { 5179249195Smm error = SET_ERROR(EBUSY); 5180219089Spjd break; 5181219089Spjd } 5182219089Spjd 5183219089Spjd /* we need certain info from the top level */ 5184219089Spjd VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY, 5185219089Spjd vml[c]->vdev_top->vdev_ms_array) == 0); 5186219089Spjd VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT, 5187219089Spjd vml[c]->vdev_top->vdev_ms_shift) == 0); 5188219089Spjd VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE, 5189219089Spjd vml[c]->vdev_top->vdev_asize) == 0); 5190219089Spjd VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT, 5191219089Spjd vml[c]->vdev_top->vdev_ashift) == 0); 5192219089Spjd } 5193219089Spjd 5194219089Spjd if (error != 0) { 5195219089Spjd kmem_free(vml, children * sizeof (vdev_t *)); 5196219089Spjd kmem_free(glist, children * sizeof (uint64_t)); 5197219089Spjd return (spa_vdev_exit(spa, NULL, txg, error)); 5198219089Spjd } 5199219089Spjd 5200219089Spjd /* stop writers from using the disks */ 5201219089Spjd for (c = 0; c < children; c++) { 5202219089Spjd if (vml[c] != NULL) 5203219089Spjd vml[c]->vdev_offline = B_TRUE; 5204219089Spjd } 5205219089Spjd vdev_reopen(spa->spa_root_vdev); 5206219089Spjd 5207219089Spjd /* 5208219089Spjd * Temporarily record the splitting vdevs in the spa config. This 5209219089Spjd * will disappear once the config is regenerated. 5210219089Spjd */ 5211219089Spjd VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 5212219089Spjd VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, 5213219089Spjd glist, children) == 0); 5214219089Spjd kmem_free(glist, children * sizeof (uint64_t)); 5215219089Spjd 5216219089Spjd mutex_enter(&spa->spa_props_lock); 5217219089Spjd VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT, 5218219089Spjd nvl) == 0); 5219219089Spjd mutex_exit(&spa->spa_props_lock); 5220219089Spjd spa->spa_config_splitting = nvl; 5221219089Spjd vdev_config_dirty(spa->spa_root_vdev); 5222219089Spjd 5223219089Spjd /* configure and create the new pool */ 5224219089Spjd VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0); 5225219089Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, 5226219089Spjd exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0); 5227219089Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, 5228219089Spjd spa_version(spa)) == 0); 5229219089Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, 5230219089Spjd spa->spa_config_txg) == 0); 5231219089Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, 5232219089Spjd spa_generate_guid(NULL)) == 0); 5233219089Spjd (void) nvlist_lookup_string(props, 5234219089Spjd zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); 5235219089Spjd 5236219089Spjd /* add the new pool to the namespace */ 5237219089Spjd newspa = spa_add(newname, config, altroot); 5238219089Spjd newspa->spa_config_txg = spa->spa_config_txg; 5239219089Spjd spa_set_log_state(newspa, SPA_LOG_CLEAR); 5240219089Spjd 5241219089Spjd /* release the spa config lock, retaining the namespace lock */ 5242219089Spjd spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); 5243219089Spjd 5244219089Spjd if (zio_injection_enabled) 5245219089Spjd zio_handle_panic_injection(spa, FTAG, 1); 5246219089Spjd 5247219089Spjd spa_activate(newspa, spa_mode_global); 5248219089Spjd spa_async_suspend(newspa); 5249219089Spjd 5250219089Spjd#ifndef sun 5251219089Spjd /* mark that we are creating new spa by splitting */ 5252219089Spjd newspa->spa_splitting_newspa = B_TRUE; 5253219089Spjd#endif 5254219089Spjd /* create the new pool from the disks of the original pool */ 5255219089Spjd error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE, B_TRUE); 5256219089Spjd#ifndef sun 5257219089Spjd newspa->spa_splitting_newspa = B_FALSE; 5258219089Spjd#endif 5259219089Spjd if (error) 5260219089Spjd goto out; 5261219089Spjd 5262219089Spjd /* if that worked, generate a real config for the new pool */ 5263219089Spjd if (newspa->spa_root_vdev != NULL) { 5264219089Spjd VERIFY(nvlist_alloc(&newspa->spa_config_splitting, 5265219089Spjd NV_UNIQUE_NAME, KM_SLEEP) == 0); 5266219089Spjd VERIFY(nvlist_add_uint64(newspa->spa_config_splitting, 5267219089Spjd ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0); 5268219089Spjd spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL, 5269219089Spjd B_TRUE)); 5270219089Spjd } 5271219089Spjd 5272219089Spjd /* set the props */ 5273219089Spjd if (props != NULL) { 5274219089Spjd spa_configfile_set(newspa, props, B_FALSE); 5275219089Spjd error = spa_prop_set(newspa, props); 5276219089Spjd if (error) 5277219089Spjd goto out; 5278219089Spjd } 5279219089Spjd 5280219089Spjd /* flush everything */ 5281219089Spjd txg = spa_vdev_config_enter(newspa); 5282219089Spjd vdev_config_dirty(newspa->spa_root_vdev); 5283219089Spjd (void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG); 5284219089Spjd 5285219089Spjd if (zio_injection_enabled) 5286219089Spjd zio_handle_panic_injection(spa, FTAG, 2); 5287219089Spjd 5288219089Spjd spa_async_resume(newspa); 5289219089Spjd 5290219089Spjd /* finally, update the original pool's config */ 5291219089Spjd txg = spa_vdev_config_enter(spa); 5292219089Spjd tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); 5293219089Spjd error = dmu_tx_assign(tx, TXG_WAIT); 5294219089Spjd if (error != 0) 5295219089Spjd dmu_tx_abort(tx); 5296219089Spjd for (c = 0; c < children; c++) { 5297219089Spjd if (vml[c] != NULL) { 5298219089Spjd vdev_split(vml[c]); 5299219089Spjd if (error == 0) 5300248571Smm spa_history_log_internal(spa, "detach", tx, 5301248571Smm "vdev=%s", vml[c]->vdev_path); 5302219089Spjd vdev_free(vml[c]); 5303219089Spjd } 5304219089Spjd } 5305219089Spjd vdev_config_dirty(spa->spa_root_vdev); 5306219089Spjd spa->spa_config_splitting = NULL; 5307219089Spjd nvlist_free(nvl); 5308219089Spjd if (error == 0) 5309219089Spjd dmu_tx_commit(tx); 5310219089Spjd (void) spa_vdev_exit(spa, NULL, txg, 0); 5311219089Spjd 5312219089Spjd if (zio_injection_enabled) 5313219089Spjd zio_handle_panic_injection(spa, FTAG, 3); 5314219089Spjd 5315219089Spjd /* split is complete; log a history record */ 5316248571Smm spa_history_log_internal(newspa, "split", NULL, 5317248571Smm "from pool %s", spa_name(spa)); 5318219089Spjd 5319219089Spjd kmem_free(vml, children * sizeof (vdev_t *)); 5320219089Spjd 5321219089Spjd /* if we're not going to mount the filesystems in userland, export */ 5322219089Spjd if (exp) 5323219089Spjd error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL, 5324219089Spjd B_FALSE, B_FALSE); 5325219089Spjd 5326219089Spjd return (error); 5327219089Spjd 5328219089Spjdout: 5329219089Spjd spa_unload(newspa); 5330219089Spjd spa_deactivate(newspa); 5331219089Spjd spa_remove(newspa); 5332219089Spjd 5333219089Spjd txg = spa_vdev_config_enter(spa); 5334219089Spjd 5335219089Spjd /* re-online all offlined disks */ 5336219089Spjd for (c = 0; c < children; c++) { 5337219089Spjd if (vml[c] != NULL) 5338219089Spjd vml[c]->vdev_offline = B_FALSE; 5339219089Spjd } 5340219089Spjd vdev_reopen(spa->spa_root_vdev); 5341219089Spjd 5342219089Spjd nvlist_free(spa->spa_config_splitting); 5343219089Spjd spa->spa_config_splitting = NULL; 5344219089Spjd (void) spa_vdev_exit(spa, NULL, txg, error); 5345219089Spjd 5346219089Spjd kmem_free(vml, children * sizeof (vdev_t *)); 5347219089Spjd return (error); 5348219089Spjd} 5349219089Spjd 5350185029Spjdstatic nvlist_t * 5351185029Spjdspa_nvlist_lookup_by_guid(nvlist_t **nvpp, int count, uint64_t target_guid) 5352185029Spjd{ 5353185029Spjd for (int i = 0; i < count; i++) { 5354185029Spjd uint64_t guid; 5355185029Spjd 5356185029Spjd VERIFY(nvlist_lookup_uint64(nvpp[i], ZPOOL_CONFIG_GUID, 5357185029Spjd &guid) == 0); 5358185029Spjd 5359185029Spjd if (guid == target_guid) 5360185029Spjd return (nvpp[i]); 5361185029Spjd } 5362185029Spjd 5363185029Spjd return (NULL); 5364185029Spjd} 5365185029Spjd 5366185029Spjdstatic void 5367185029Spjdspa_vdev_remove_aux(nvlist_t *config, char *name, nvlist_t **dev, int count, 5368185029Spjd nvlist_t *dev_to_remove) 5369185029Spjd{ 5370185029Spjd nvlist_t **newdev = NULL; 5371185029Spjd 5372185029Spjd if (count > 1) 5373185029Spjd newdev = kmem_alloc((count - 1) * sizeof (void *), KM_SLEEP); 5374185029Spjd 5375185029Spjd for (int i = 0, j = 0; i < count; i++) { 5376185029Spjd if (dev[i] == dev_to_remove) 5377185029Spjd continue; 5378185029Spjd VERIFY(nvlist_dup(dev[i], &newdev[j++], KM_SLEEP) == 0); 5379185029Spjd } 5380185029Spjd 5381185029Spjd VERIFY(nvlist_remove(config, name, DATA_TYPE_NVLIST_ARRAY) == 0); 5382185029Spjd VERIFY(nvlist_add_nvlist_array(config, name, newdev, count - 1) == 0); 5383185029Spjd 5384185029Spjd for (int i = 0; i < count - 1; i++) 5385185029Spjd nvlist_free(newdev[i]); 5386185029Spjd 5387185029Spjd if (count > 1) 5388185029Spjd kmem_free(newdev, (count - 1) * sizeof (void *)); 5389185029Spjd} 5390185029Spjd 5391168404Spjd/* 5392219089Spjd * Evacuate the device. 5393219089Spjd */ 5394219089Spjdstatic int 5395219089Spjdspa_vdev_remove_evacuate(spa_t *spa, vdev_t *vd) 5396219089Spjd{ 5397219089Spjd uint64_t txg; 5398219089Spjd int error = 0; 5399219089Spjd 5400219089Spjd ASSERT(MUTEX_HELD(&spa_namespace_lock)); 5401219089Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); 5402219089Spjd ASSERT(vd == vd->vdev_top); 5403219089Spjd 5404219089Spjd /* 5405219089Spjd * Evacuate the device. We don't hold the config lock as writer 5406219089Spjd * since we need to do I/O but we do keep the 5407219089Spjd * spa_namespace_lock held. Once this completes the device 5408219089Spjd * should no longer have any blocks allocated on it. 5409219089Spjd */ 5410219089Spjd if (vd->vdev_islog) { 5411219089Spjd if (vd->vdev_stat.vs_alloc != 0) 5412219089Spjd error = spa_offline_log(spa); 5413219089Spjd } else { 5414249195Smm error = SET_ERROR(ENOTSUP); 5415219089Spjd } 5416219089Spjd 5417219089Spjd if (error) 5418219089Spjd return (error); 5419219089Spjd 5420219089Spjd /* 5421219089Spjd * The evacuation succeeded. Remove any remaining MOS metadata 5422219089Spjd * associated with this vdev, and wait for these changes to sync. 5423219089Spjd */ 5424240415Smm ASSERT0(vd->vdev_stat.vs_alloc); 5425219089Spjd txg = spa_vdev_config_enter(spa); 5426219089Spjd vd->vdev_removing = B_TRUE; 5427258717Savg vdev_dirty_leaves(vd, VDD_DTL, txg); 5428219089Spjd vdev_config_dirty(vd); 5429219089Spjd spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); 5430219089Spjd 5431219089Spjd return (0); 5432219089Spjd} 5433219089Spjd 5434219089Spjd/* 5435219089Spjd * Complete the removal by cleaning up the namespace. 5436219089Spjd */ 5437219089Spjdstatic void 5438219089Spjdspa_vdev_remove_from_namespace(spa_t *spa, vdev_t *vd) 5439219089Spjd{ 5440219089Spjd vdev_t *rvd = spa->spa_root_vdev; 5441219089Spjd uint64_t id = vd->vdev_id; 5442219089Spjd boolean_t last_vdev = (id == (rvd->vdev_children - 1)); 5443219089Spjd 5444219089Spjd ASSERT(MUTEX_HELD(&spa_namespace_lock)); 5445219089Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 5446219089Spjd ASSERT(vd == vd->vdev_top); 5447219089Spjd 5448219089Spjd /* 5449219089Spjd * Only remove any devices which are empty. 5450219089Spjd */ 5451219089Spjd if (vd->vdev_stat.vs_alloc != 0) 5452219089Spjd return; 5453219089Spjd 5454219089Spjd (void) vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); 5455219089Spjd 5456219089Spjd if (list_link_active(&vd->vdev_state_dirty_node)) 5457219089Spjd vdev_state_clean(vd); 5458219089Spjd if (list_link_active(&vd->vdev_config_dirty_node)) 5459219089Spjd vdev_config_clean(vd); 5460219089Spjd 5461219089Spjd vdev_free(vd); 5462219089Spjd 5463219089Spjd if (last_vdev) { 5464219089Spjd vdev_compact_children(rvd); 5465219089Spjd } else { 5466219089Spjd vd = vdev_alloc_common(spa, id, 0, &vdev_hole_ops); 5467219089Spjd vdev_add_child(rvd, vd); 5468219089Spjd } 5469219089Spjd vdev_config_dirty(rvd); 5470219089Spjd 5471219089Spjd /* 5472219089Spjd * Reassess the health of our root vdev. 5473219089Spjd */ 5474219089Spjd vdev_reopen(rvd); 5475219089Spjd} 5476219089Spjd 5477219089Spjd/* 5478219089Spjd * Remove a device from the pool - 5479219089Spjd * 5480219089Spjd * Removing a device from the vdev namespace requires several steps 5481219089Spjd * and can take a significant amount of time. As a result we use 5482219089Spjd * the spa_vdev_config_[enter/exit] functions which allow us to 5483219089Spjd * grab and release the spa_config_lock while still holding the namespace 5484219089Spjd * lock. During each step the configuration is synced out. 5485251631Sdelphij * 5486251631Sdelphij * Currently, this supports removing only hot spares, slogs, and level 2 ARC 5487251631Sdelphij * devices. 5488219089Spjd */ 5489168404Spjdint 5490168404Spjdspa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) 5491168404Spjd{ 5492168404Spjd vdev_t *vd; 5493219089Spjd metaslab_group_t *mg; 5494185029Spjd nvlist_t **spares, **l2cache, *nv; 5495219089Spjd uint64_t txg = 0; 5496185029Spjd uint_t nspares, nl2cache; 5497185029Spjd int error = 0; 5498209962Smm boolean_t locked = MUTEX_HELD(&spa_namespace_lock); 5499168404Spjd 5500219089Spjd ASSERT(spa_writeable(spa)); 5501219089Spjd 5502209962Smm if (!locked) 5503209962Smm txg = spa_vdev_enter(spa); 5504168404Spjd 5505185029Spjd vd = spa_lookup_by_guid(spa, guid, B_FALSE); 5506168404Spjd 5507185029Spjd if (spa->spa_spares.sav_vdevs != NULL && 5508185029Spjd nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, 5509185029Spjd ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0 && 5510185029Spjd (nv = spa_nvlist_lookup_by_guid(spares, nspares, guid)) != NULL) { 5511185029Spjd /* 5512185029Spjd * Only remove the hot spare if it's not currently in use 5513185029Spjd * in this pool. 5514185029Spjd */ 5515185029Spjd if (vd == NULL || unspare) { 5516185029Spjd spa_vdev_remove_aux(spa->spa_spares.sav_config, 5517185029Spjd ZPOOL_CONFIG_SPARES, spares, nspares, nv); 5518185029Spjd spa_load_spares(spa); 5519185029Spjd spa->spa_spares.sav_sync = B_TRUE; 5520185029Spjd } else { 5521249195Smm error = SET_ERROR(EBUSY); 5522168404Spjd } 5523185029Spjd } else if (spa->spa_l2cache.sav_vdevs != NULL && 5524185029Spjd nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, 5525185029Spjd ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && 5526185029Spjd (nv = spa_nvlist_lookup_by_guid(l2cache, nl2cache, guid)) != NULL) { 5527185029Spjd /* 5528185029Spjd * Cache devices can always be removed. 5529185029Spjd */ 5530185029Spjd spa_vdev_remove_aux(spa->spa_l2cache.sav_config, 5531185029Spjd ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); 5532185029Spjd spa_load_l2cache(spa); 5533185029Spjd spa->spa_l2cache.sav_sync = B_TRUE; 5534219089Spjd } else if (vd != NULL && vd->vdev_islog) { 5535219089Spjd ASSERT(!locked); 5536219089Spjd ASSERT(vd == vd->vdev_top); 5537219089Spjd 5538219089Spjd /* 5539219089Spjd * XXX - Once we have bp-rewrite this should 5540219089Spjd * become the common case. 5541219089Spjd */ 5542219089Spjd 5543219089Spjd mg = vd->vdev_mg; 5544219089Spjd 5545219089Spjd /* 5546219089Spjd * Stop allocating from this vdev. 5547219089Spjd */ 5548219089Spjd metaslab_group_passivate(mg); 5549219089Spjd 5550219089Spjd /* 5551219089Spjd * Wait for the youngest allocations and frees to sync, 5552219089Spjd * and then wait for the deferral of those frees to finish. 5553219089Spjd */ 5554219089Spjd spa_vdev_config_exit(spa, NULL, 5555219089Spjd txg + TXG_CONCURRENT_STATES + TXG_DEFER_SIZE, 0, FTAG); 5556219089Spjd 5557219089Spjd /* 5558219089Spjd * Attempt to evacuate the vdev. 5559219089Spjd */ 5560219089Spjd error = spa_vdev_remove_evacuate(spa, vd); 5561219089Spjd 5562219089Spjd txg = spa_vdev_config_enter(spa); 5563219089Spjd 5564219089Spjd /* 5565219089Spjd * If we couldn't evacuate the vdev, unwind. 5566219089Spjd */ 5567219089Spjd if (error) { 5568219089Spjd metaslab_group_activate(mg); 5569219089Spjd return (spa_vdev_exit(spa, NULL, txg, error)); 5570219089Spjd } 5571219089Spjd 5572219089Spjd /* 5573219089Spjd * Clean up the vdev namespace. 5574219089Spjd */ 5575219089Spjd spa_vdev_remove_from_namespace(spa, vd); 5576219089Spjd 5577185029Spjd } else if (vd != NULL) { 5578185029Spjd /* 5579185029Spjd * Normal vdevs cannot be removed (yet). 5580185029Spjd */ 5581249195Smm error = SET_ERROR(ENOTSUP); 5582168404Spjd } else { 5583185029Spjd /* 5584185029Spjd * There is no vdev of any kind with the specified guid. 5585185029Spjd */ 5586249195Smm error = SET_ERROR(ENOENT); 5587168404Spjd } 5588168404Spjd 5589209962Smm if (!locked) 5590209962Smm return (spa_vdev_exit(spa, NULL, txg, error)); 5591209962Smm 5592209962Smm return (error); 5593168404Spjd} 5594168404Spjd 5595168404Spjd/* 5596185029Spjd * Find any device that's done replacing, or a vdev marked 'unspare' that's 5597251631Sdelphij * currently spared, so we can detach it. 5598168404Spjd */ 5599168404Spjdstatic vdev_t * 5600185029Spjdspa_vdev_resilver_done_hunt(vdev_t *vd) 5601168404Spjd{ 5602168404Spjd vdev_t *newvd, *oldvd; 5603168404Spjd 5604219089Spjd for (int c = 0; c < vd->vdev_children; c++) { 5605185029Spjd oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); 5606168404Spjd if (oldvd != NULL) 5607168404Spjd return (oldvd); 5608168404Spjd } 5609168404Spjd 5610185029Spjd /* 5611219089Spjd * Check for a completed replacement. We always consider the first 5612219089Spjd * vdev in the list to be the oldest vdev, and the last one to be 5613219089Spjd * the newest (see spa_vdev_attach() for how that works). In 5614219089Spjd * the case where the newest vdev is faulted, we will not automatically 5615219089Spjd * remove it after a resilver completes. This is OK as it will require 5616219089Spjd * user intervention to determine which disk the admin wishes to keep. 5617185029Spjd */ 5618219089Spjd if (vd->vdev_ops == &vdev_replacing_ops) { 5619219089Spjd ASSERT(vd->vdev_children > 1); 5620219089Spjd 5621219089Spjd newvd = vd->vdev_child[vd->vdev_children - 1]; 5622168404Spjd oldvd = vd->vdev_child[0]; 5623168404Spjd 5624209962Smm if (vdev_dtl_empty(newvd, DTL_MISSING) && 5625219089Spjd vdev_dtl_empty(newvd, DTL_OUTAGE) && 5626209962Smm !vdev_dtl_required(oldvd)) 5627168404Spjd return (oldvd); 5628168404Spjd } 5629168404Spjd 5630185029Spjd /* 5631185029Spjd * Check for a completed resilver with the 'unspare' flag set. 5632185029Spjd */ 5633219089Spjd if (vd->vdev_ops == &vdev_spare_ops) { 5634219089Spjd vdev_t *first = vd->vdev_child[0]; 5635219089Spjd vdev_t *last = vd->vdev_child[vd->vdev_children - 1]; 5636185029Spjd 5637219089Spjd if (last->vdev_unspare) { 5638219089Spjd oldvd = first; 5639219089Spjd newvd = last; 5640219089Spjd } else if (first->vdev_unspare) { 5641219089Spjd oldvd = last; 5642219089Spjd newvd = first; 5643219089Spjd } else { 5644219089Spjd oldvd = NULL; 5645219089Spjd } 5646219089Spjd 5647219089Spjd if (oldvd != NULL && 5648209962Smm vdev_dtl_empty(newvd, DTL_MISSING) && 5649219089Spjd vdev_dtl_empty(newvd, DTL_OUTAGE) && 5650219089Spjd !vdev_dtl_required(oldvd)) 5651185029Spjd return (oldvd); 5652219089Spjd 5653219089Spjd /* 5654219089Spjd * If there are more than two spares attached to a disk, 5655219089Spjd * and those spares are not required, then we want to 5656219089Spjd * attempt to free them up now so that they can be used 5657219089Spjd * by other pools. Once we're back down to a single 5658219089Spjd * disk+spare, we stop removing them. 5659219089Spjd */ 5660219089Spjd if (vd->vdev_children > 2) { 5661219089Spjd newvd = vd->vdev_child[1]; 5662219089Spjd 5663219089Spjd if (newvd->vdev_isspare && last->vdev_isspare && 5664219089Spjd vdev_dtl_empty(last, DTL_MISSING) && 5665219089Spjd vdev_dtl_empty(last, DTL_OUTAGE) && 5666219089Spjd !vdev_dtl_required(newvd)) 5667219089Spjd return (newvd); 5668185029Spjd } 5669185029Spjd } 5670185029Spjd 5671168404Spjd return (NULL); 5672168404Spjd} 5673168404Spjd 5674168404Spjdstatic void 5675185029Spjdspa_vdev_resilver_done(spa_t *spa) 5676168404Spjd{ 5677209962Smm vdev_t *vd, *pvd, *ppvd; 5678209962Smm uint64_t guid, sguid, pguid, ppguid; 5679168404Spjd 5680209962Smm spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 5681168404Spjd 5682185029Spjd while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { 5683209962Smm pvd = vd->vdev_parent; 5684209962Smm ppvd = pvd->vdev_parent; 5685168404Spjd guid = vd->vdev_guid; 5686209962Smm pguid = pvd->vdev_guid; 5687209962Smm ppguid = ppvd->vdev_guid; 5688209962Smm sguid = 0; 5689168404Spjd /* 5690168404Spjd * If we have just finished replacing a hot spared device, then 5691168404Spjd * we need to detach the parent's first child (the original hot 5692168404Spjd * spare) as well. 5693168404Spjd */ 5694219089Spjd if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0 && 5695219089Spjd ppvd->vdev_children == 2) { 5696168404Spjd ASSERT(pvd->vdev_ops == &vdev_replacing_ops); 5697209962Smm sguid = ppvd->vdev_child[1]->vdev_guid; 5698168404Spjd } 5699254112Sdelphij ASSERT(vd->vdev_resilver_txg == 0 || !vdev_dtl_required(vd)); 5700254112Sdelphij 5701209962Smm spa_config_exit(spa, SCL_ALL, FTAG); 5702209962Smm if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) 5703168404Spjd return; 5704209962Smm if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) 5705168404Spjd return; 5706209962Smm spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 5707168404Spjd } 5708168404Spjd 5709209962Smm spa_config_exit(spa, SCL_ALL, FTAG); 5710168404Spjd} 5711168404Spjd 5712168404Spjd/* 5713219089Spjd * Update the stored path or FRU for this vdev. 5714168404Spjd */ 5715168404Spjdint 5716209962Smmspa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value, 5717209962Smm boolean_t ispath) 5718168404Spjd{ 5719185029Spjd vdev_t *vd; 5720219089Spjd boolean_t sync = B_FALSE; 5721168404Spjd 5722219089Spjd ASSERT(spa_writeable(spa)); 5723168404Spjd 5724219089Spjd spa_vdev_state_enter(spa, SCL_ALL); 5725219089Spjd 5726209962Smm if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 5727219089Spjd return (spa_vdev_state_exit(spa, NULL, ENOENT)); 5728168404Spjd 5729168404Spjd if (!vd->vdev_ops->vdev_op_leaf) 5730219089Spjd return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 5731168404Spjd 5732209962Smm if (ispath) { 5733219089Spjd if (strcmp(value, vd->vdev_path) != 0) { 5734219089Spjd spa_strfree(vd->vdev_path); 5735219089Spjd vd->vdev_path = spa_strdup(value); 5736219089Spjd sync = B_TRUE; 5737219089Spjd } 5738209962Smm } else { 5739219089Spjd if (vd->vdev_fru == NULL) { 5740219089Spjd vd->vdev_fru = spa_strdup(value); 5741219089Spjd sync = B_TRUE; 5742219089Spjd } else if (strcmp(value, vd->vdev_fru) != 0) { 5743209962Smm spa_strfree(vd->vdev_fru); 5744219089Spjd vd->vdev_fru = spa_strdup(value); 5745219089Spjd sync = B_TRUE; 5746219089Spjd } 5747209962Smm } 5748168404Spjd 5749219089Spjd return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0)); 5750168404Spjd} 5751168404Spjd 5752209962Smmint 5753209962Smmspa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) 5754209962Smm{ 5755209962Smm return (spa_vdev_set_common(spa, guid, newpath, B_TRUE)); 5756209962Smm} 5757209962Smm 5758209962Smmint 5759209962Smmspa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru) 5760209962Smm{ 5761209962Smm return (spa_vdev_set_common(spa, guid, newfru, B_FALSE)); 5762209962Smm} 5763209962Smm 5764168404Spjd/* 5765168404Spjd * ========================================================================== 5766219089Spjd * SPA Scanning 5767168404Spjd * ========================================================================== 5768168404Spjd */ 5769168404Spjd 5770168404Spjdint 5771219089Spjdspa_scan_stop(spa_t *spa) 5772168404Spjd{ 5773185029Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); 5774219089Spjd if (dsl_scan_resilvering(spa->spa_dsl_pool)) 5775249195Smm return (SET_ERROR(EBUSY)); 5776219089Spjd return (dsl_scan_cancel(spa->spa_dsl_pool)); 5777219089Spjd} 5778168404Spjd 5779219089Spjdint 5780219089Spjdspa_scan(spa_t *spa, pool_scan_func_t func) 5781219089Spjd{ 5782219089Spjd ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); 5783219089Spjd 5784219089Spjd if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE) 5785249195Smm return (SET_ERROR(ENOTSUP)); 5786168404Spjd 5787168404Spjd /* 5788185029Spjd * If a resilver was requested, but there is no DTL on a 5789185029Spjd * writeable leaf device, we have nothing to do. 5790168404Spjd */ 5791219089Spjd if (func == POOL_SCAN_RESILVER && 5792185029Spjd !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { 5793185029Spjd spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); 5794168404Spjd return (0); 5795168404Spjd } 5796168404Spjd 5797219089Spjd return (dsl_scan(spa->spa_dsl_pool, func)); 5798168404Spjd} 5799168404Spjd 5800168404Spjd/* 5801168404Spjd * ========================================================================== 5802168404Spjd * SPA async task processing 5803168404Spjd * ========================================================================== 5804168404Spjd */ 5805168404Spjd 5806168404Spjdstatic void 5807185029Spjdspa_async_remove(spa_t *spa, vdev_t *vd) 5808168404Spjd{ 5809185029Spjd if (vd->vdev_remove_wanted) { 5810219089Spjd vd->vdev_remove_wanted = B_FALSE; 5811219089Spjd vd->vdev_delayed_close = B_FALSE; 5812185029Spjd vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); 5813209962Smm 5814209962Smm /* 5815209962Smm * We want to clear the stats, but we don't want to do a full 5816209962Smm * vdev_clear() as that will cause us to throw away 5817209962Smm * degraded/faulted state as well as attempt to reopen the 5818209962Smm * device, all of which is a waste. 5819209962Smm */ 5820209962Smm vd->vdev_stat.vs_read_errors = 0; 5821209962Smm vd->vdev_stat.vs_write_errors = 0; 5822209962Smm vd->vdev_stat.vs_checksum_errors = 0; 5823209962Smm 5824185029Spjd vdev_state_dirty(vd->vdev_top); 5825185029Spjd } 5826168404Spjd 5827185029Spjd for (int c = 0; c < vd->vdev_children; c++) 5828185029Spjd spa_async_remove(spa, vd->vdev_child[c]); 5829185029Spjd} 5830168404Spjd 5831185029Spjdstatic void 5832185029Spjdspa_async_probe(spa_t *spa, vdev_t *vd) 5833185029Spjd{ 5834185029Spjd if (vd->vdev_probe_wanted) { 5835219089Spjd vd->vdev_probe_wanted = B_FALSE; 5836185029Spjd vdev_reopen(vd); /* vdev_open() does the actual probe */ 5837168404Spjd } 5838168404Spjd 5839185029Spjd for (int c = 0; c < vd->vdev_children; c++) 5840185029Spjd spa_async_probe(spa, vd->vdev_child[c]); 5841168404Spjd} 5842168404Spjd 5843168404Spjdstatic void 5844219089Spjdspa_async_autoexpand(spa_t *spa, vdev_t *vd) 5845219089Spjd{ 5846219089Spjd sysevent_id_t eid; 5847219089Spjd nvlist_t *attr; 5848219089Spjd char *physpath; 5849219089Spjd 5850219089Spjd if (!spa->spa_autoexpand) 5851219089Spjd return; 5852219089Spjd 5853219089Spjd for (int c = 0; c < vd->vdev_children; c++) { 5854219089Spjd vdev_t *cvd = vd->vdev_child[c]; 5855219089Spjd spa_async_autoexpand(spa, cvd); 5856219089Spjd } 5857219089Spjd 5858219089Spjd if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL) 5859219089Spjd return; 5860219089Spjd 5861219089Spjd physpath = kmem_zalloc(MAXPATHLEN, KM_SLEEP); 5862219089Spjd (void) snprintf(physpath, MAXPATHLEN, "/devices%s", vd->vdev_physpath); 5863219089Spjd 5864219089Spjd VERIFY(nvlist_alloc(&attr, NV_UNIQUE_NAME, KM_SLEEP) == 0); 5865219089Spjd VERIFY(nvlist_add_string(attr, DEV_PHYS_PATH, physpath) == 0); 5866219089Spjd 5867219089Spjd (void) ddi_log_sysevent(zfs_dip, SUNW_VENDOR, EC_DEV_STATUS, 5868219089Spjd ESC_ZFS_VDEV_AUTOEXPAND, attr, &eid, DDI_SLEEP); 5869219089Spjd 5870219089Spjd nvlist_free(attr); 5871219089Spjd kmem_free(physpath, MAXPATHLEN); 5872219089Spjd} 5873219089Spjd 5874219089Spjdstatic void 5875168404Spjdspa_async_thread(void *arg) 5876168404Spjd{ 5877168404Spjd spa_t *spa = arg; 5878168404Spjd int tasks; 5879168404Spjd 5880168404Spjd ASSERT(spa->spa_sync_on); 5881168404Spjd 5882168404Spjd mutex_enter(&spa->spa_async_lock); 5883168404Spjd tasks = spa->spa_async_tasks; 5884253990Smav spa->spa_async_tasks &= SPA_ASYNC_REMOVE; 5885168404Spjd mutex_exit(&spa->spa_async_lock); 5886168404Spjd 5887168404Spjd /* 5888168404Spjd * See if the config needs to be updated. 5889168404Spjd */ 5890168404Spjd if (tasks & SPA_ASYNC_CONFIG_UPDATE) { 5891219089Spjd uint64_t old_space, new_space; 5892219089Spjd 5893168404Spjd mutex_enter(&spa_namespace_lock); 5894219089Spjd old_space = metaslab_class_get_space(spa_normal_class(spa)); 5895168404Spjd spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); 5896219089Spjd new_space = metaslab_class_get_space(spa_normal_class(spa)); 5897168404Spjd mutex_exit(&spa_namespace_lock); 5898219089Spjd 5899219089Spjd /* 5900219089Spjd * If the pool grew as a result of the config update, 5901219089Spjd * then log an internal history event. 5902219089Spjd */ 5903219089Spjd if (new_space != old_space) { 5904248571Smm spa_history_log_internal(spa, "vdev online", NULL, 5905219089Spjd "pool '%s' size: %llu(+%llu)", 5906219089Spjd spa_name(spa), new_space, new_space - old_space); 5907219089Spjd } 5908168404Spjd } 5909168404Spjd 5910219089Spjd if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) { 5911219089Spjd spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 5912219089Spjd spa_async_autoexpand(spa, spa->spa_root_vdev); 5913219089Spjd spa_config_exit(spa, SCL_CONFIG, FTAG); 5914219089Spjd } 5915219089Spjd 5916168404Spjd /* 5917185029Spjd * See if any devices need to be probed. 5918168404Spjd */ 5919185029Spjd if (tasks & SPA_ASYNC_PROBE) { 5920219089Spjd spa_vdev_state_enter(spa, SCL_NONE); 5921185029Spjd spa_async_probe(spa, spa->spa_root_vdev); 5922185029Spjd (void) spa_vdev_state_exit(spa, NULL, 0); 5923185029Spjd } 5924168404Spjd 5925168404Spjd /* 5926185029Spjd * If any devices are done replacing, detach them. 5927168404Spjd */ 5928185029Spjd if (tasks & SPA_ASYNC_RESILVER_DONE) 5929185029Spjd spa_vdev_resilver_done(spa); 5930168404Spjd 5931168404Spjd /* 5932168404Spjd * Kick off a resilver. 5933168404Spjd */ 5934168404Spjd if (tasks & SPA_ASYNC_RESILVER) 5935219089Spjd dsl_resilver_restart(spa->spa_dsl_pool, 0); 5936168404Spjd 5937168404Spjd /* 5938168404Spjd * Let the world know that we're done. 5939168404Spjd */ 5940168404Spjd mutex_enter(&spa->spa_async_lock); 5941168404Spjd spa->spa_async_thread = NULL; 5942168404Spjd cv_broadcast(&spa->spa_async_cv); 5943168404Spjd mutex_exit(&spa->spa_async_lock); 5944168404Spjd thread_exit(); 5945168404Spjd} 5946168404Spjd 5947253990Smavstatic void 5948253990Smavspa_async_thread_vd(void *arg) 5949253990Smav{ 5950253990Smav spa_t *spa = arg; 5951253990Smav int tasks; 5952253990Smav 5953253990Smav ASSERT(spa->spa_sync_on); 5954253990Smav 5955253990Smav mutex_enter(&spa->spa_async_lock); 5956253990Smav tasks = spa->spa_async_tasks; 5957253990Smavretry: 5958253990Smav spa->spa_async_tasks &= ~SPA_ASYNC_REMOVE; 5959253990Smav mutex_exit(&spa->spa_async_lock); 5960253990Smav 5961253990Smav /* 5962253990Smav * See if any devices need to be marked REMOVED. 5963253990Smav */ 5964253990Smav if (tasks & SPA_ASYNC_REMOVE) { 5965253990Smav spa_vdev_state_enter(spa, SCL_NONE); 5966253990Smav spa_async_remove(spa, spa->spa_root_vdev); 5967253990Smav for (int i = 0; i < spa->spa_l2cache.sav_count; i++) 5968253990Smav spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); 5969253990Smav for (int i = 0; i < spa->spa_spares.sav_count; i++) 5970253990Smav spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); 5971253990Smav (void) spa_vdev_state_exit(spa, NULL, 0); 5972253990Smav } 5973253990Smav 5974253990Smav /* 5975253990Smav * Let the world know that we're done. 5976253990Smav */ 5977253990Smav mutex_enter(&spa->spa_async_lock); 5978253990Smav tasks = spa->spa_async_tasks; 5979253990Smav if ((tasks & SPA_ASYNC_REMOVE) != 0) 5980253990Smav goto retry; 5981253990Smav spa->spa_async_thread_vd = NULL; 5982253990Smav cv_broadcast(&spa->spa_async_cv); 5983253990Smav mutex_exit(&spa->spa_async_lock); 5984253990Smav thread_exit(); 5985253990Smav} 5986253990Smav 5987168404Spjdvoid 5988168404Spjdspa_async_suspend(spa_t *spa) 5989168404Spjd{ 5990168404Spjd mutex_enter(&spa->spa_async_lock); 5991168404Spjd spa->spa_async_suspended++; 5992253990Smav while (spa->spa_async_thread != NULL && 5993253990Smav spa->spa_async_thread_vd != NULL) 5994168404Spjd cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); 5995168404Spjd mutex_exit(&spa->spa_async_lock); 5996168404Spjd} 5997168404Spjd 5998168404Spjdvoid 5999168404Spjdspa_async_resume(spa_t *spa) 6000168404Spjd{ 6001168404Spjd mutex_enter(&spa->spa_async_lock); 6002168404Spjd ASSERT(spa->spa_async_suspended != 0); 6003168404Spjd spa->spa_async_suspended--; 6004168404Spjd mutex_exit(&spa->spa_async_lock); 6005168404Spjd} 6006168404Spjd 6007251636Sdelphijstatic boolean_t 6008251636Sdelphijspa_async_tasks_pending(spa_t *spa) 6009251636Sdelphij{ 6010251636Sdelphij uint_t non_config_tasks; 6011251636Sdelphij uint_t config_task; 6012251636Sdelphij boolean_t config_task_suspended; 6013251636Sdelphij 6014253990Smav non_config_tasks = spa->spa_async_tasks & ~(SPA_ASYNC_CONFIG_UPDATE | 6015253990Smav SPA_ASYNC_REMOVE); 6016251636Sdelphij config_task = spa->spa_async_tasks & SPA_ASYNC_CONFIG_UPDATE; 6017251636Sdelphij if (spa->spa_ccw_fail_time == 0) { 6018251636Sdelphij config_task_suspended = B_FALSE; 6019251636Sdelphij } else { 6020251636Sdelphij config_task_suspended = 6021251636Sdelphij (gethrtime() - spa->spa_ccw_fail_time) < 6022251636Sdelphij (zfs_ccw_retry_interval * NANOSEC); 6023251636Sdelphij } 6024251636Sdelphij 6025251636Sdelphij return (non_config_tasks || (config_task && !config_task_suspended)); 6026251636Sdelphij} 6027251636Sdelphij 6028168404Spjdstatic void 6029168404Spjdspa_async_dispatch(spa_t *spa) 6030168404Spjd{ 6031168404Spjd mutex_enter(&spa->spa_async_lock); 6032251636Sdelphij if (spa_async_tasks_pending(spa) && 6033251636Sdelphij !spa->spa_async_suspended && 6034168404Spjd spa->spa_async_thread == NULL && 6035251636Sdelphij rootdir != NULL) 6036168404Spjd spa->spa_async_thread = thread_create(NULL, 0, 6037168404Spjd spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); 6038168404Spjd mutex_exit(&spa->spa_async_lock); 6039168404Spjd} 6040168404Spjd 6041253990Smavstatic void 6042253990Smavspa_async_dispatch_vd(spa_t *spa) 6043253990Smav{ 6044253990Smav mutex_enter(&spa->spa_async_lock); 6045253990Smav if ((spa->spa_async_tasks & SPA_ASYNC_REMOVE) != 0 && 6046253990Smav !spa->spa_async_suspended && 6047253990Smav spa->spa_async_thread_vd == NULL && 6048253990Smav rootdir != NULL) 6049253990Smav spa->spa_async_thread_vd = thread_create(NULL, 0, 6050253990Smav spa_async_thread_vd, spa, 0, &p0, TS_RUN, maxclsyspri); 6051253990Smav mutex_exit(&spa->spa_async_lock); 6052253990Smav} 6053253990Smav 6054168404Spjdvoid 6055168404Spjdspa_async_request(spa_t *spa, int task) 6056168404Spjd{ 6057219089Spjd zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task); 6058168404Spjd mutex_enter(&spa->spa_async_lock); 6059168404Spjd spa->spa_async_tasks |= task; 6060168404Spjd mutex_exit(&spa->spa_async_lock); 6061253990Smav spa_async_dispatch_vd(spa); 6062168404Spjd} 6063168404Spjd 6064168404Spjd/* 6065168404Spjd * ========================================================================== 6066168404Spjd * SPA syncing routines 6067168404Spjd * ========================================================================== 6068168404Spjd */ 6069168404Spjd 6070219089Spjdstatic int 6071219089Spjdbpobj_enqueue_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 6072168404Spjd{ 6073219089Spjd bpobj_t *bpo = arg; 6074219089Spjd bpobj_enqueue(bpo, bp, tx); 6075219089Spjd return (0); 6076219089Spjd} 6077168404Spjd 6078219089Spjdstatic int 6079219089Spjdspa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 6080219089Spjd{ 6081219089Spjd zio_t *zio = arg; 6082168404Spjd 6083219089Spjd zio_nowait(zio_free_sync(zio, zio->io_spa, dmu_tx_get_txg(tx), bp, 6084240868Spjd BP_GET_PSIZE(bp), zio->io_flags)); 6085219089Spjd return (0); 6086168404Spjd} 6087168404Spjd 6088258632Savg/* 6089258632Savg * Note: this simple function is not inlined to make it easier to dtrace the 6090258632Savg * amount of time spent syncing frees. 6091258632Savg */ 6092168404Spjdstatic void 6093258632Savgspa_sync_frees(spa_t *spa, bplist_t *bpl, dmu_tx_t *tx) 6094258632Savg{ 6095258632Savg zio_t *zio = zio_root(spa, NULL, NULL, 0); 6096258632Savg bplist_iterate(bpl, spa_free_sync_cb, zio, tx); 6097258632Savg VERIFY(zio_wait(zio) == 0); 6098258632Savg} 6099258632Savg 6100258632Savg/* 6101258632Savg * Note: this simple function is not inlined to make it easier to dtrace the 6102258632Savg * amount of time spent syncing deferred frees. 6103258632Savg */ 6104258632Savgstatic void 6105258632Savgspa_sync_deferred_frees(spa_t *spa, dmu_tx_t *tx) 6106258632Savg{ 6107258632Savg zio_t *zio = zio_root(spa, NULL, NULL, 0); 6108258632Savg VERIFY3U(bpobj_iterate(&spa->spa_deferred_bpobj, 6109258632Savg spa_free_sync_cb, zio, tx), ==, 0); 6110258632Savg VERIFY0(zio_wait(zio)); 6111258632Savg} 6112258632Savg 6113258632Savg 6114258632Savgstatic void 6115168404Spjdspa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) 6116168404Spjd{ 6117168404Spjd char *packed = NULL; 6118185029Spjd size_t bufsize; 6119168404Spjd size_t nvsize = 0; 6120168404Spjd dmu_buf_t *db; 6121168404Spjd 6122168404Spjd VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); 6123168404Spjd 6124185029Spjd /* 6125185029Spjd * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration 6126260150Sdelphij * information. This avoids the dmu_buf_will_dirty() path and 6127185029Spjd * saves us a pre-read to get data we don't actually care about. 6128185029Spjd */ 6129236884Smm bufsize = P2ROUNDUP((uint64_t)nvsize, SPA_CONFIG_BLOCKSIZE); 6130185029Spjd packed = kmem_alloc(bufsize, KM_SLEEP); 6131168404Spjd 6132168404Spjd VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, 6133168404Spjd KM_SLEEP) == 0); 6134185029Spjd bzero(packed + nvsize, bufsize - nvsize); 6135168404Spjd 6136185029Spjd dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); 6137168404Spjd 6138185029Spjd kmem_free(packed, bufsize); 6139168404Spjd 6140168404Spjd VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); 6141168404Spjd dmu_buf_will_dirty(db, tx); 6142168404Spjd *(uint64_t *)db->db_data = nvsize; 6143168404Spjd dmu_buf_rele(db, FTAG); 6144168404Spjd} 6145168404Spjd 6146168404Spjdstatic void 6147185029Spjdspa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, 6148185029Spjd const char *config, const char *entry) 6149168404Spjd{ 6150168404Spjd nvlist_t *nvroot; 6151185029Spjd nvlist_t **list; 6152168404Spjd int i; 6153168404Spjd 6154185029Spjd if (!sav->sav_sync) 6155168404Spjd return; 6156168404Spjd 6157168404Spjd /* 6158185029Spjd * Update the MOS nvlist describing the list of available devices. 6159185029Spjd * spa_validate_aux() will have already made sure this nvlist is 6160185029Spjd * valid and the vdevs are labeled appropriately. 6161168404Spjd */ 6162185029Spjd if (sav->sav_object == 0) { 6163185029Spjd sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, 6164185029Spjd DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, 6165185029Spjd sizeof (uint64_t), tx); 6166168404Spjd VERIFY(zap_update(spa->spa_meta_objset, 6167185029Spjd DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, 6168185029Spjd &sav->sav_object, tx) == 0); 6169168404Spjd } 6170168404Spjd 6171168404Spjd VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); 6172185029Spjd if (sav->sav_count == 0) { 6173185029Spjd VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); 6174168404Spjd } else { 6175185029Spjd list = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); 6176185029Spjd for (i = 0; i < sav->sav_count; i++) 6177185029Spjd list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], 6178219089Spjd B_FALSE, VDEV_CONFIG_L2CACHE); 6179185029Spjd VERIFY(nvlist_add_nvlist_array(nvroot, config, list, 6180185029Spjd sav->sav_count) == 0); 6181185029Spjd for (i = 0; i < sav->sav_count; i++) 6182185029Spjd nvlist_free(list[i]); 6183185029Spjd kmem_free(list, sav->sav_count * sizeof (void *)); 6184168404Spjd } 6185168404Spjd 6186185029Spjd spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); 6187168404Spjd nvlist_free(nvroot); 6188168404Spjd 6189185029Spjd sav->sav_sync = B_FALSE; 6190168404Spjd} 6191168404Spjd 6192168404Spjdstatic void 6193168404Spjdspa_sync_config_object(spa_t *spa, dmu_tx_t *tx) 6194168404Spjd{ 6195168404Spjd nvlist_t *config; 6196168404Spjd 6197185029Spjd if (list_is_empty(&spa->spa_config_dirty_list)) 6198168404Spjd return; 6199168404Spjd 6200185029Spjd spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 6201168404Spjd 6202185029Spjd config = spa_config_generate(spa, spa->spa_root_vdev, 6203185029Spjd dmu_tx_get_txg(tx), B_FALSE); 6204185029Spjd 6205243505Smm /* 6206243505Smm * If we're upgrading the spa version then make sure that 6207243505Smm * the config object gets updated with the correct version. 6208243505Smm */ 6209243505Smm if (spa->spa_ubsync.ub_version < spa->spa_uberblock.ub_version) 6210243505Smm fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, 6211243505Smm spa->spa_uberblock.ub_version); 6212243505Smm 6213185029Spjd spa_config_exit(spa, SCL_STATE, FTAG); 6214185029Spjd 6215168404Spjd if (spa->spa_config_syncing) 6216168404Spjd nvlist_free(spa->spa_config_syncing); 6217168404Spjd spa->spa_config_syncing = config; 6218168404Spjd 6219168404Spjd spa_sync_nvlist(spa, spa->spa_config_object, config, tx); 6220168404Spjd} 6221168404Spjd 6222236884Smmstatic void 6223248571Smmspa_sync_version(void *arg, dmu_tx_t *tx) 6224236884Smm{ 6225248571Smm uint64_t *versionp = arg; 6226248571Smm uint64_t version = *versionp; 6227248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 6228236884Smm 6229236884Smm /* 6230236884Smm * Setting the version is special cased when first creating the pool. 6231236884Smm */ 6232236884Smm ASSERT(tx->tx_txg != TXG_INITIAL); 6233236884Smm 6234247592Sdelphij ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 6235236884Smm ASSERT(version >= spa_version(spa)); 6236236884Smm 6237236884Smm spa->spa_uberblock.ub_version = version; 6238236884Smm vdev_config_dirty(spa->spa_root_vdev); 6239248571Smm spa_history_log_internal(spa, "set", tx, "version=%lld", version); 6240236884Smm} 6241236884Smm 6242185029Spjd/* 6243185029Spjd * Set zpool properties. 6244185029Spjd */ 6245168404Spjdstatic void 6246248571Smmspa_sync_props(void *arg, dmu_tx_t *tx) 6247168404Spjd{ 6248248571Smm nvlist_t *nvp = arg; 6249248571Smm spa_t *spa = dmu_tx_pool(tx)->dp_spa; 6250185029Spjd objset_t *mos = spa->spa_meta_objset; 6251236884Smm nvpair_t *elem = NULL; 6252168404Spjd 6253168404Spjd mutex_enter(&spa->spa_props_lock); 6254168404Spjd 6255185029Spjd while ((elem = nvlist_next_nvpair(nvp, elem))) { 6256236884Smm uint64_t intval; 6257236884Smm char *strval, *fname; 6258236884Smm zpool_prop_t prop; 6259236884Smm const char *propname; 6260236884Smm zprop_type_t proptype; 6261259813Sdelphij spa_feature_t fid; 6262236884Smm 6263185029Spjd switch (prop = zpool_name_to_prop(nvpair_name(elem))) { 6264236884Smm case ZPROP_INVAL: 6265236884Smm /* 6266236884Smm * We checked this earlier in spa_prop_validate(). 6267236884Smm */ 6268236884Smm ASSERT(zpool_prop_feature(nvpair_name(elem))); 6269236884Smm 6270236884Smm fname = strchr(nvpair_name(elem), '@') + 1; 6271259813Sdelphij VERIFY0(zfeature_lookup_name(fname, &fid)); 6272236884Smm 6273259813Sdelphij spa_feature_enable(spa, fid, tx); 6274248571Smm spa_history_log_internal(spa, "set", tx, 6275248571Smm "%s=enabled", nvpair_name(elem)); 6276236884Smm break; 6277236884Smm 6278185029Spjd case ZPOOL_PROP_VERSION: 6279258717Savg intval = fnvpair_value_uint64(elem); 6280185029Spjd /* 6281236884Smm * The version is synced seperatly before other 6282236884Smm * properties and should be correct by now. 6283185029Spjd */ 6284236884Smm ASSERT3U(spa_version(spa), >=, intval); 6285185029Spjd break; 6286168404Spjd 6287185029Spjd case ZPOOL_PROP_ALTROOT: 6288185029Spjd /* 6289185029Spjd * 'altroot' is a non-persistent property. It should 6290185029Spjd * have been set temporarily at creation or import time. 6291185029Spjd */ 6292185029Spjd ASSERT(spa->spa_root != NULL); 6293185029Spjd break; 6294168404Spjd 6295219089Spjd case ZPOOL_PROP_READONLY: 6296185029Spjd case ZPOOL_PROP_CACHEFILE: 6297185029Spjd /* 6298219089Spjd * 'readonly' and 'cachefile' are also non-persisitent 6299219089Spjd * properties. 6300185029Spjd */ 6301168404Spjd break; 6302228103Smm case ZPOOL_PROP_COMMENT: 6303258717Savg strval = fnvpair_value_string(elem); 6304228103Smm if (spa->spa_comment != NULL) 6305228103Smm spa_strfree(spa->spa_comment); 6306228103Smm spa->spa_comment = spa_strdup(strval); 6307228103Smm /* 6308228103Smm * We need to dirty the configuration on all the vdevs 6309228103Smm * so that their labels get updated. It's unnecessary 6310228103Smm * to do this for pool creation since the vdev's 6311228103Smm * configuratoin has already been dirtied. 6312228103Smm */ 6313228103Smm if (tx->tx_txg != TXG_INITIAL) 6314228103Smm vdev_config_dirty(spa->spa_root_vdev); 6315248571Smm spa_history_log_internal(spa, "set", tx, 6316248571Smm "%s=%s", nvpair_name(elem), strval); 6317228103Smm break; 6318185029Spjd default: 6319185029Spjd /* 6320185029Spjd * Set pool property values in the poolprops mos object. 6321185029Spjd */ 6322185029Spjd if (spa->spa_pool_props_object == 0) { 6323236884Smm spa->spa_pool_props_object = 6324236884Smm zap_create_link(mos, DMU_OT_POOL_PROPS, 6325185029Spjd DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, 6326236884Smm tx); 6327185029Spjd } 6328185029Spjd 6329185029Spjd /* normalize the property name */ 6330185029Spjd propname = zpool_prop_to_name(prop); 6331185029Spjd proptype = zpool_prop_get_type(prop); 6332185029Spjd 6333185029Spjd if (nvpair_type(elem) == DATA_TYPE_STRING) { 6334185029Spjd ASSERT(proptype == PROP_TYPE_STRING); 6335258717Savg strval = fnvpair_value_string(elem); 6336258717Savg VERIFY0(zap_update(mos, 6337185029Spjd spa->spa_pool_props_object, propname, 6338258717Savg 1, strlen(strval) + 1, strval, tx)); 6339248571Smm spa_history_log_internal(spa, "set", tx, 6340248571Smm "%s=%s", nvpair_name(elem), strval); 6341185029Spjd } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 6342258717Savg intval = fnvpair_value_uint64(elem); 6343185029Spjd 6344185029Spjd if (proptype == PROP_TYPE_INDEX) { 6345185029Spjd const char *unused; 6346258717Savg VERIFY0(zpool_prop_index_to_string( 6347258717Savg prop, intval, &unused)); 6348185029Spjd } 6349258717Savg VERIFY0(zap_update(mos, 6350185029Spjd spa->spa_pool_props_object, propname, 6351258717Savg 8, 1, &intval, tx)); 6352248571Smm spa_history_log_internal(spa, "set", tx, 6353248571Smm "%s=%lld", nvpair_name(elem), intval); 6354185029Spjd } else { 6355185029Spjd ASSERT(0); /* not allowed */ 6356185029Spjd } 6357185029Spjd 6358185029Spjd switch (prop) { 6359185029Spjd case ZPOOL_PROP_DELEGATION: 6360185029Spjd spa->spa_delegation = intval; 6361185029Spjd break; 6362185029Spjd case ZPOOL_PROP_BOOTFS: 6363185029Spjd spa->spa_bootfs = intval; 6364185029Spjd break; 6365185029Spjd case ZPOOL_PROP_FAILUREMODE: 6366185029Spjd spa->spa_failmode = intval; 6367185029Spjd break; 6368219089Spjd case ZPOOL_PROP_AUTOEXPAND: 6369219089Spjd spa->spa_autoexpand = intval; 6370219089Spjd if (tx->tx_txg != TXG_INITIAL) 6371219089Spjd spa_async_request(spa, 6372219089Spjd SPA_ASYNC_AUTOEXPAND); 6373219089Spjd break; 6374219089Spjd case ZPOOL_PROP_DEDUPDITTO: 6375219089Spjd spa->spa_dedup_ditto = intval; 6376219089Spjd break; 6377185029Spjd default: 6378185029Spjd break; 6379185029Spjd } 6380168404Spjd } 6381185029Spjd 6382168404Spjd } 6383185029Spjd 6384185029Spjd mutex_exit(&spa->spa_props_lock); 6385168404Spjd} 6386168404Spjd 6387168404Spjd/* 6388219089Spjd * Perform one-time upgrade on-disk changes. spa_version() does not 6389219089Spjd * reflect the new version this txg, so there must be no changes this 6390219089Spjd * txg to anything that the upgrade code depends on after it executes. 6391219089Spjd * Therefore this must be called after dsl_pool_sync() does the sync 6392219089Spjd * tasks. 6393219089Spjd */ 6394219089Spjdstatic void 6395219089Spjdspa_sync_upgrades(spa_t *spa, dmu_tx_t *tx) 6396219089Spjd{ 6397219089Spjd dsl_pool_t *dp = spa->spa_dsl_pool; 6398219089Spjd 6399219089Spjd ASSERT(spa->spa_sync_pass == 1); 6400219089Spjd 6401248571Smm rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG); 6402248571Smm 6403219089Spjd if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && 6404219089Spjd spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { 6405219089Spjd dsl_pool_create_origin(dp, tx); 6406219089Spjd 6407219089Spjd /* Keeping the origin open increases spa_minref */ 6408219089Spjd spa->spa_minref += 3; 6409219089Spjd } 6410219089Spjd 6411219089Spjd if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && 6412219089Spjd spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { 6413219089Spjd dsl_pool_upgrade_clones(dp, tx); 6414219089Spjd } 6415219089Spjd 6416219089Spjd if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES && 6417219089Spjd spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) { 6418219089Spjd dsl_pool_upgrade_dir_clones(dp, tx); 6419219089Spjd 6420219089Spjd /* Keeping the freedir open increases spa_minref */ 6421219089Spjd spa->spa_minref += 3; 6422219089Spjd } 6423236884Smm 6424236884Smm if (spa->spa_ubsync.ub_version < SPA_VERSION_FEATURES && 6425236884Smm spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { 6426236884Smm spa_feature_create_zap_objects(spa, tx); 6427236884Smm } 6428248571Smm rrw_exit(&dp->dp_config_rwlock, FTAG); 6429219089Spjd} 6430219089Spjd 6431219089Spjd/* 6432168404Spjd * Sync the specified transaction group. New blocks may be dirtied as 6433168404Spjd * part of the process, so we iterate until it converges. 6434168404Spjd */ 6435168404Spjdvoid 6436168404Spjdspa_sync(spa_t *spa, uint64_t txg) 6437168404Spjd{ 6438168404Spjd dsl_pool_t *dp = spa->spa_dsl_pool; 6439168404Spjd objset_t *mos = spa->spa_meta_objset; 6440219089Spjd bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK]; 6441168404Spjd vdev_t *rvd = spa->spa_root_vdev; 6442168404Spjd vdev_t *vd; 6443168404Spjd dmu_tx_t *tx; 6444185029Spjd int error; 6445168404Spjd 6446219089Spjd VERIFY(spa_writeable(spa)); 6447219089Spjd 6448168404Spjd /* 6449168404Spjd * Lock out configuration changes. 6450168404Spjd */ 6451185029Spjd spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); 6452168404Spjd 6453168404Spjd spa->spa_syncing_txg = txg; 6454168404Spjd spa->spa_sync_pass = 0; 6455168404Spjd 6456185029Spjd /* 6457185029Spjd * If there are any pending vdev state changes, convert them 6458185029Spjd * into config changes that go out with this transaction group. 6459185029Spjd */ 6460185029Spjd spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 6461209962Smm while (list_head(&spa->spa_state_dirty_list) != NULL) { 6462209962Smm /* 6463209962Smm * We need the write lock here because, for aux vdevs, 6464209962Smm * calling vdev_config_dirty() modifies sav_config. 6465209962Smm * This is ugly and will become unnecessary when we 6466209962Smm * eliminate the aux vdev wart by integrating all vdevs 6467209962Smm * into the root vdev tree. 6468209962Smm */ 6469209962Smm spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); 6470209962Smm spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); 6471209962Smm while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { 6472209962Smm vdev_state_clean(vd); 6473209962Smm vdev_config_dirty(vd); 6474209962Smm } 6475209962Smm spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); 6476209962Smm spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); 6477185029Spjd } 6478185029Spjd spa_config_exit(spa, SCL_STATE, FTAG); 6479185029Spjd 6480168404Spjd tx = dmu_tx_create_assigned(dp, txg); 6481168404Spjd 6482247265Smm spa->spa_sync_starttime = gethrtime(); 6483247265Smm#ifdef illumos 6484247265Smm VERIFY(cyclic_reprogram(spa->spa_deadman_cycid, 6485247265Smm spa->spa_sync_starttime + spa->spa_deadman_synctime)); 6486247265Smm#else /* FreeBSD */ 6487247265Smm#ifdef _KERNEL 6488247265Smm callout_reset(&spa->spa_deadman_cycid, 6489247265Smm hz * spa->spa_deadman_synctime / NANOSEC, spa_deadman, spa); 6490247265Smm#endif 6491247265Smm#endif 6492247265Smm 6493168404Spjd /* 6494185029Spjd * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, 6495168404Spjd * set spa_deflate if we have no raid-z vdevs. 6496168404Spjd */ 6497185029Spjd if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && 6498185029Spjd spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { 6499168404Spjd int i; 6500168404Spjd 6501168404Spjd for (i = 0; i < rvd->vdev_children; i++) { 6502168404Spjd vd = rvd->vdev_child[i]; 6503168404Spjd if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) 6504168404Spjd break; 6505168404Spjd } 6506168404Spjd if (i == rvd->vdev_children) { 6507168404Spjd spa->spa_deflate = TRUE; 6508168404Spjd VERIFY(0 == zap_add(spa->spa_meta_objset, 6509168404Spjd DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, 6510168404Spjd sizeof (uint64_t), 1, &spa->spa_deflate, tx)); 6511168404Spjd } 6512168404Spjd } 6513168404Spjd 6514168404Spjd /* 6515219089Spjd * If anything has changed in this txg, or if someone is waiting 6516219089Spjd * for this txg to sync (eg, spa_vdev_remove()), push the 6517219089Spjd * deferred frees from the previous txg. If not, leave them 6518219089Spjd * alone so that we don't generate work on an otherwise idle 6519219089Spjd * system. 6520168404Spjd */ 6521168404Spjd if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || 6522168404Spjd !txg_list_empty(&dp->dp_dirty_dirs, txg) || 6523219089Spjd !txg_list_empty(&dp->dp_sync_tasks, txg) || 6524219089Spjd ((dsl_scan_active(dp->dp_scan) || 6525219089Spjd txg_sync_waiting(dp)) && !spa_shutting_down(spa))) { 6526258632Savg spa_sync_deferred_frees(spa, tx); 6527219089Spjd } 6528168404Spjd 6529168404Spjd /* 6530168404Spjd * Iterate to convergence. 6531168404Spjd */ 6532168404Spjd do { 6533219089Spjd int pass = ++spa->spa_sync_pass; 6534168404Spjd 6535168404Spjd spa_sync_config_object(spa, tx); 6536185029Spjd spa_sync_aux_dev(spa, &spa->spa_spares, tx, 6537185029Spjd ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); 6538185029Spjd spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, 6539185029Spjd ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); 6540168404Spjd spa_errlog_sync(spa, txg); 6541168404Spjd dsl_pool_sync(dp, txg); 6542168404Spjd 6543243503Smm if (pass < zfs_sync_pass_deferred_free) { 6544258632Savg spa_sync_frees(spa, free_bpl, tx); 6545219089Spjd } else { 6546219089Spjd bplist_iterate(free_bpl, bpobj_enqueue_cb, 6547258632Savg &spa->spa_deferred_bpobj, tx); 6548168404Spjd } 6549168404Spjd 6550219089Spjd ddt_sync(spa, txg); 6551219089Spjd dsl_scan_sync(dp, tx); 6552168404Spjd 6553219089Spjd while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) 6554219089Spjd vdev_sync(vd, txg); 6555168404Spjd 6556219089Spjd if (pass == 1) 6557219089Spjd spa_sync_upgrades(spa, tx); 6558168404Spjd 6559219089Spjd } while (dmu_objset_is_dirty(mos, txg)); 6560219089Spjd 6561168404Spjd /* 6562168404Spjd * Rewrite the vdev configuration (which includes the uberblock) 6563168404Spjd * to commit the transaction group. 6564168404Spjd * 6565185029Spjd * If there are no dirty vdevs, we sync the uberblock to a few 6566185029Spjd * random top-level vdevs that are known to be visible in the 6567185029Spjd * config cache (see spa_vdev_add() for a complete description). 6568185029Spjd * If there *are* dirty vdevs, sync the uberblock to all vdevs. 6569168404Spjd */ 6570185029Spjd for (;;) { 6571185029Spjd /* 6572185029Spjd * We hold SCL_STATE to prevent vdev open/close/etc. 6573185029Spjd * while we're attempting to write the vdev labels. 6574185029Spjd */ 6575185029Spjd spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 6576168404Spjd 6577185029Spjd if (list_is_empty(&spa->spa_config_dirty_list)) { 6578185029Spjd vdev_t *svd[SPA_DVAS_PER_BP]; 6579185029Spjd int svdcount = 0; 6580185029Spjd int children = rvd->vdev_children; 6581185029Spjd int c0 = spa_get_random(children); 6582185029Spjd 6583219089Spjd for (int c = 0; c < children; c++) { 6584185029Spjd vd = rvd->vdev_child[(c0 + c) % children]; 6585185029Spjd if (vd->vdev_ms_array == 0 || vd->vdev_islog) 6586185029Spjd continue; 6587185029Spjd svd[svdcount++] = vd; 6588185029Spjd if (svdcount == SPA_DVAS_PER_BP) 6589185029Spjd break; 6590185029Spjd } 6591213198Smm error = vdev_config_sync(svd, svdcount, txg, B_FALSE); 6592213198Smm if (error != 0) 6593213198Smm error = vdev_config_sync(svd, svdcount, txg, 6594213198Smm B_TRUE); 6595185029Spjd } else { 6596185029Spjd error = vdev_config_sync(rvd->vdev_child, 6597213198Smm rvd->vdev_children, txg, B_FALSE); 6598213198Smm if (error != 0) 6599213198Smm error = vdev_config_sync(rvd->vdev_child, 6600213198Smm rvd->vdev_children, txg, B_TRUE); 6601168404Spjd } 6602185029Spjd 6603239620Smm if (error == 0) 6604239620Smm spa->spa_last_synced_guid = rvd->vdev_guid; 6605239620Smm 6606185029Spjd spa_config_exit(spa, SCL_STATE, FTAG); 6607185029Spjd 6608185029Spjd if (error == 0) 6609185029Spjd break; 6610185029Spjd zio_suspend(spa, NULL); 6611185029Spjd zio_resume_wait(spa); 6612168404Spjd } 6613168404Spjd dmu_tx_commit(tx); 6614168404Spjd 6615247265Smm#ifdef illumos 6616247265Smm VERIFY(cyclic_reprogram(spa->spa_deadman_cycid, CY_INFINITY)); 6617247265Smm#else /* FreeBSD */ 6618247265Smm#ifdef _KERNEL 6619247265Smm callout_drain(&spa->spa_deadman_cycid); 6620247265Smm#endif 6621247265Smm#endif 6622247265Smm 6623168404Spjd /* 6624168404Spjd * Clear the dirty config list. 6625168404Spjd */ 6626185029Spjd while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) 6627168404Spjd vdev_config_clean(vd); 6628168404Spjd 6629168404Spjd /* 6630168404Spjd * Now that the new config has synced transactionally, 6631168404Spjd * let it become visible to the config cache. 6632168404Spjd */ 6633168404Spjd if (spa->spa_config_syncing != NULL) { 6634168404Spjd spa_config_set(spa, spa->spa_config_syncing); 6635168404Spjd spa->spa_config_txg = txg; 6636168404Spjd spa->spa_config_syncing = NULL; 6637168404Spjd } 6638168404Spjd 6639168404Spjd spa->spa_ubsync = spa->spa_uberblock; 6640168404Spjd 6641219089Spjd dsl_pool_sync_done(dp, txg); 6642168404Spjd 6643168404Spjd /* 6644168404Spjd * Update usable space statistics. 6645168404Spjd */ 6646168404Spjd while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) 6647168404Spjd vdev_sync_done(vd, txg); 6648168404Spjd 6649219089Spjd spa_update_dspace(spa); 6650219089Spjd 6651168404Spjd /* 6652168404Spjd * It had better be the case that we didn't dirty anything 6653168404Spjd * since vdev_config_sync(). 6654168404Spjd */ 6655168404Spjd ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); 6656168404Spjd ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); 6657168404Spjd ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); 6658168404Spjd 6659219089Spjd spa->spa_sync_pass = 0; 6660219089Spjd 6661185029Spjd spa_config_exit(spa, SCL_CONFIG, FTAG); 6662168404Spjd 6663219089Spjd spa_handle_ignored_writes(spa); 6664219089Spjd 6665168404Spjd /* 6666168404Spjd * If any async tasks have been requested, kick them off. 6667168404Spjd */ 6668168404Spjd spa_async_dispatch(spa); 6669253990Smav spa_async_dispatch_vd(spa); 6670168404Spjd} 6671168404Spjd 6672168404Spjd/* 6673168404Spjd * Sync all pools. We don't want to hold the namespace lock across these 6674168404Spjd * operations, so we take a reference on the spa_t and drop the lock during the 6675168404Spjd * sync. 6676168404Spjd */ 6677168404Spjdvoid 6678168404Spjdspa_sync_allpools(void) 6679168404Spjd{ 6680168404Spjd spa_t *spa = NULL; 6681168404Spjd mutex_enter(&spa_namespace_lock); 6682168404Spjd while ((spa = spa_next(spa)) != NULL) { 6683219089Spjd if (spa_state(spa) != POOL_STATE_ACTIVE || 6684219089Spjd !spa_writeable(spa) || spa_suspended(spa)) 6685168404Spjd continue; 6686168404Spjd spa_open_ref(spa, FTAG); 6687168404Spjd mutex_exit(&spa_namespace_lock); 6688168404Spjd txg_wait_synced(spa_get_dsl(spa), 0); 6689168404Spjd mutex_enter(&spa_namespace_lock); 6690168404Spjd spa_close(spa, FTAG); 6691168404Spjd } 6692168404Spjd mutex_exit(&spa_namespace_lock); 6693168404Spjd} 6694168404Spjd 6695168404Spjd/* 6696168404Spjd * ========================================================================== 6697168404Spjd * Miscellaneous routines 6698168404Spjd * ========================================================================== 6699168404Spjd */ 6700168404Spjd 6701168404Spjd/* 6702168404Spjd * Remove all pools in the system. 6703168404Spjd */ 6704168404Spjdvoid 6705168404Spjdspa_evict_all(void) 6706168404Spjd{ 6707168404Spjd spa_t *spa; 6708168404Spjd 6709168404Spjd /* 6710168404Spjd * Remove all cached state. All pools should be closed now, 6711168404Spjd * so every spa in the AVL tree should be unreferenced. 6712168404Spjd */ 6713168404Spjd mutex_enter(&spa_namespace_lock); 6714168404Spjd while ((spa = spa_next(NULL)) != NULL) { 6715168404Spjd /* 6716168404Spjd * Stop async tasks. The async thread may need to detach 6717168404Spjd * a device that's been replaced, which requires grabbing 6718168404Spjd * spa_namespace_lock, so we must drop it here. 6719168404Spjd */ 6720168404Spjd spa_open_ref(spa, FTAG); 6721168404Spjd mutex_exit(&spa_namespace_lock); 6722168404Spjd spa_async_suspend(spa); 6723168404Spjd mutex_enter(&spa_namespace_lock); 6724168404Spjd spa_close(spa, FTAG); 6725168404Spjd 6726168404Spjd if (spa->spa_state != POOL_STATE_UNINITIALIZED) { 6727168404Spjd spa_unload(spa); 6728168404Spjd spa_deactivate(spa); 6729168404Spjd } 6730168404Spjd spa_remove(spa); 6731168404Spjd } 6732168404Spjd mutex_exit(&spa_namespace_lock); 6733168404Spjd} 6734168404Spjd 6735168404Spjdvdev_t * 6736209962Smmspa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux) 6737168404Spjd{ 6738185029Spjd vdev_t *vd; 6739185029Spjd int i; 6740185029Spjd 6741185029Spjd if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) 6742185029Spjd return (vd); 6743185029Spjd 6744209962Smm if (aux) { 6745185029Spjd for (i = 0; i < spa->spa_l2cache.sav_count; i++) { 6746185029Spjd vd = spa->spa_l2cache.sav_vdevs[i]; 6747185029Spjd if (vd->vdev_guid == guid) 6748185029Spjd return (vd); 6749185029Spjd } 6750209962Smm 6751209962Smm for (i = 0; i < spa->spa_spares.sav_count; i++) { 6752209962Smm vd = spa->spa_spares.sav_vdevs[i]; 6753209962Smm if (vd->vdev_guid == guid) 6754209962Smm return (vd); 6755209962Smm } 6756185029Spjd } 6757185029Spjd 6758185029Spjd return (NULL); 6759168404Spjd} 6760168404Spjd 6761168404Spjdvoid 6762185029Spjdspa_upgrade(spa_t *spa, uint64_t version) 6763168404Spjd{ 6764219089Spjd ASSERT(spa_writeable(spa)); 6765219089Spjd 6766185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 6767168404Spjd 6768168404Spjd /* 6769168404Spjd * This should only be called for a non-faulted pool, and since a 6770168404Spjd * future version would result in an unopenable pool, this shouldn't be 6771168404Spjd * possible. 6772168404Spjd */ 6773247592Sdelphij ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version)); 6774185029Spjd ASSERT(version >= spa->spa_uberblock.ub_version); 6775168404Spjd 6776185029Spjd spa->spa_uberblock.ub_version = version; 6777168404Spjd vdev_config_dirty(spa->spa_root_vdev); 6778168404Spjd 6779185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 6780168404Spjd 6781168404Spjd txg_wait_synced(spa_get_dsl(spa), 0); 6782168404Spjd} 6783168404Spjd 6784168404Spjdboolean_t 6785168404Spjdspa_has_spare(spa_t *spa, uint64_t guid) 6786168404Spjd{ 6787168404Spjd int i; 6788168404Spjd uint64_t spareguid; 6789185029Spjd spa_aux_vdev_t *sav = &spa->spa_spares; 6790168404Spjd 6791185029Spjd for (i = 0; i < sav->sav_count; i++) 6792185029Spjd if (sav->sav_vdevs[i]->vdev_guid == guid) 6793168404Spjd return (B_TRUE); 6794168404Spjd 6795185029Spjd for (i = 0; i < sav->sav_npending; i++) { 6796185029Spjd if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, 6797185029Spjd &spareguid) == 0 && spareguid == guid) 6798168404Spjd return (B_TRUE); 6799168404Spjd } 6800168404Spjd 6801168404Spjd return (B_FALSE); 6802168404Spjd} 6803168404Spjd 6804185029Spjd/* 6805185029Spjd * Check if a pool has an active shared spare device. 6806185029Spjd * Note: reference count of an active spare is 2, as a spare and as a replace 6807185029Spjd */ 6808185029Spjdstatic boolean_t 6809185029Spjdspa_has_active_shared_spare(spa_t *spa) 6810168404Spjd{ 6811185029Spjd int i, refcnt; 6812185029Spjd uint64_t pool; 6813185029Spjd spa_aux_vdev_t *sav = &spa->spa_spares; 6814185029Spjd 6815185029Spjd for (i = 0; i < sav->sav_count; i++) { 6816185029Spjd if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, 6817185029Spjd &refcnt) && pool != 0ULL && pool == spa_guid(spa) && 6818185029Spjd refcnt > 2) 6819185029Spjd return (B_TRUE); 6820185029Spjd } 6821185029Spjd 6822185029Spjd return (B_FALSE); 6823168404Spjd} 6824168404Spjd 6825185029Spjd/* 6826185029Spjd * Post a sysevent corresponding to the given event. The 'name' must be one of 6827185029Spjd * the event definitions in sys/sysevent/eventdefs.h. The payload will be 6828185029Spjd * filled in from the spa and (optionally) the vdev. This doesn't do anything 6829185029Spjd * in the userland libzpool, as we don't want consumers to misinterpret ztest 6830185029Spjd * or zdb as real changes. 6831185029Spjd */ 6832185029Spjdvoid 6833185029Spjdspa_event_notify(spa_t *spa, vdev_t *vd, const char *name) 6834168404Spjd{ 6835185029Spjd#ifdef _KERNEL 6836185029Spjd sysevent_t *ev; 6837185029Spjd sysevent_attr_list_t *attr = NULL; 6838185029Spjd sysevent_value_t value; 6839185029Spjd sysevent_id_t eid; 6840168404Spjd 6841185029Spjd ev = sysevent_alloc(EC_ZFS, (char *)name, SUNW_KERN_PUB "zfs", 6842185029Spjd SE_SLEEP); 6843168404Spjd 6844185029Spjd value.value_type = SE_DATA_TYPE_STRING; 6845185029Spjd value.value.sv_string = spa_name(spa); 6846185029Spjd if (sysevent_add_attr(&attr, ZFS_EV_POOL_NAME, &value, SE_SLEEP) != 0) 6847185029Spjd goto done; 6848168404Spjd 6849185029Spjd value.value_type = SE_DATA_TYPE_UINT64; 6850185029Spjd value.value.sv_uint64 = spa_guid(spa); 6851185029Spjd if (sysevent_add_attr(&attr, ZFS_EV_POOL_GUID, &value, SE_SLEEP) != 0) 6852185029Spjd goto done; 6853168404Spjd 6854185029Spjd if (vd) { 6855185029Spjd value.value_type = SE_DATA_TYPE_UINT64; 6856185029Spjd value.value.sv_uint64 = vd->vdev_guid; 6857185029Spjd if (sysevent_add_attr(&attr, ZFS_EV_VDEV_GUID, &value, 6858185029Spjd SE_SLEEP) != 0) 6859185029Spjd goto done; 6860168404Spjd 6861185029Spjd if (vd->vdev_path) { 6862185029Spjd value.value_type = SE_DATA_TYPE_STRING; 6863185029Spjd value.value.sv_string = vd->vdev_path; 6864185029Spjd if (sysevent_add_attr(&attr, ZFS_EV_VDEV_PATH, 6865185029Spjd &value, SE_SLEEP) != 0) 6866185029Spjd goto done; 6867168404Spjd } 6868168404Spjd } 6869168404Spjd 6870185029Spjd if (sysevent_attach_attributes(ev, attr) != 0) 6871185029Spjd goto done; 6872185029Spjd attr = NULL; 6873168404Spjd 6874185029Spjd (void) log_sysevent(ev, SE_SLEEP, &eid); 6875185029Spjd 6876185029Spjddone: 6877185029Spjd if (attr) 6878185029Spjd sysevent_free_attr(attr); 6879185029Spjd sysevent_free(ev); 6880185029Spjd#endif 6881168404Spjd} 6882