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. 24228103Smm * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25254112Sdelphij * Copyright (c) 2013 by Delphix. All rights reserved. 26168404Spjd */ 27168404Spjd 28168404Spjd#include <sys/zfs_context.h> 29168404Spjd#include <sys/spa.h> 30251636Sdelphij#include <sys/fm/fs/zfs.h> 31168404Spjd#include <sys/spa_impl.h> 32168404Spjd#include <sys/nvpair.h> 33168404Spjd#include <sys/uio.h> 34168404Spjd#include <sys/fs/zfs.h> 35168404Spjd#include <sys/vdev_impl.h> 36168404Spjd#include <sys/zfs_ioctl.h> 37168498Spjd#include <sys/utsname.h> 38168962Spjd#include <sys/sunddi.h> 39236884Smm#include <sys/zfeature.h> 40168404Spjd#ifdef _KERNEL 41168404Spjd#include <sys/kobj.h> 42219089Spjd#include <sys/zone.h> 43168404Spjd#endif 44168404Spjd 45168404Spjd/* 46168404Spjd * Pool configuration repository. 47168404Spjd * 48185029Spjd * Pool configuration is stored as a packed nvlist on the filesystem. By 49185029Spjd * default, all pools are stored in /etc/zfs/zpool.cache and loaded on boot 50185029Spjd * (when the ZFS module is loaded). Pools can also have the 'cachefile' 51185029Spjd * property set that allows them to be stored in an alternate location until 52185029Spjd * the control of external software. 53168404Spjd * 54185029Spjd * For each cache file, we have a single nvlist which holds all the 55185029Spjd * configuration information. When the module loads, we read this information 56185029Spjd * from /etc/zfs/zpool.cache and populate the SPA namespace. This namespace is 57185029Spjd * maintained independently in spa.c. Whenever the namespace is modified, or 58185029Spjd * the configuration of a pool is changed, we call spa_config_sync(), which 59185029Spjd * walks through all the active pools and writes the configuration to disk. 60168404Spjd */ 61168404Spjd 62168404Spjdstatic uint64_t spa_config_generation = 1; 63168404Spjd 64168404Spjd/* 65168404Spjd * This can be overridden in userland to preserve an alternate namespace for 66168404Spjd * userland pools when doing testing. 67168404Spjd */ 68185029Spjdconst char *spa_config_path = ZPOOL_CACHE; 69168404Spjd 70168404Spjd/* 71168404Spjd * Called when the module is first loaded, this routine loads the configuration 72168404Spjd * file into the SPA namespace. It does not actually open or load the pools; it 73168404Spjd * only populates the namespace. 74168404Spjd */ 75168404Spjdvoid 76168404Spjdspa_config_load(void) 77168404Spjd{ 78168404Spjd void *buf = NULL; 79168404Spjd nvlist_t *nvlist, *child; 80168404Spjd nvpair_t *nvpair; 81185029Spjd char *pathname; 82168404Spjd struct _buf *file; 83168404Spjd uint64_t fsize; 84168404Spjd 85168404Spjd /* 86168404Spjd * Open the configuration file. 87168404Spjd */ 88185029Spjd pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP); 89168404Spjd 90185029Spjd (void) snprintf(pathname, MAXPATHLEN, "%s", spa_config_path); 91185029Spjd 92168404Spjd file = kobj_open_file(pathname); 93185029Spjd 94219089Spjd kmem_free(pathname, MAXPATHLEN); 95168404Spjd 96219089Spjd if (file == (struct _buf *)-1) 97219089Spjd return; 98219089Spjd 99219089Spjd if (kobj_get_filesize(file, &fsize) != 0) 100168404Spjd goto out; 101168404Spjd 102168404Spjd buf = kmem_alloc(fsize, KM_SLEEP); 103168404Spjd 104168404Spjd /* 105168404Spjd * Read the nvlist from the file. 106168404Spjd */ 107219089Spjd if (kobj_read_file(file, buf, fsize, 0) < 0) 108168404Spjd goto out; 109168404Spjd 110168404Spjd /* 111168404Spjd * Unpack the nvlist. 112168404Spjd */ 113168404Spjd if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0) 114168404Spjd goto out; 115168404Spjd 116168404Spjd /* 117168404Spjd * Iterate over all elements in the nvlist, creating a new spa_t for 118168404Spjd * each one with the specified configuration. 119168404Spjd */ 120168404Spjd mutex_enter(&spa_namespace_lock); 121168404Spjd nvpair = NULL; 122168404Spjd while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) { 123168404Spjd if (nvpair_type(nvpair) != DATA_TYPE_NVLIST) 124168404Spjd continue; 125168404Spjd 126168404Spjd VERIFY(nvpair_value_nvlist(nvpair, &child) == 0); 127168404Spjd 128168404Spjd if (spa_lookup(nvpair_name(nvpair)) != NULL) 129168404Spjd continue; 130219089Spjd (void) spa_add(nvpair_name(nvpair), child, NULL); 131168404Spjd } 132168404Spjd mutex_exit(&spa_namespace_lock); 133168404Spjd 134168404Spjd nvlist_free(nvlist); 135168404Spjd 136168404Spjdout: 137168404Spjd if (buf != NULL) 138168404Spjd kmem_free(buf, fsize); 139219089Spjd 140219089Spjd kobj_close_file(file); 141168404Spjd} 142168404Spjd 143251636Sdelphijstatic int 144185029Spjdspa_config_write(spa_config_dirent_t *dp, nvlist_t *nvl) 145168404Spjd{ 146168404Spjd size_t buflen; 147219089Spjd char *buf; 148168404Spjd vnode_t *vp; 149219089Spjd int oflags = FWRITE | FTRUNC | FCREAT | FOFFMAX; 150219089Spjd char *temp; 151251636Sdelphij int err; 152168404Spjd 153168404Spjd /* 154185029Spjd * If the nvlist is empty (NULL), then remove the old cachefile. 155168404Spjd */ 156185029Spjd if (nvl == NULL) { 157251636Sdelphij err = vn_remove(dp->scd_path, UIO_SYSSPACE, RMFILE); 158251636Sdelphij return (err); 159168404Spjd } 160168404Spjd 161168404Spjd /* 162168404Spjd * Pack the configuration into a buffer. 163168404Spjd */ 164185029Spjd VERIFY(nvlist_size(nvl, &buflen, NV_ENCODE_XDR) == 0); 165168404Spjd 166168404Spjd buf = kmem_alloc(buflen, KM_SLEEP); 167185029Spjd temp = kmem_zalloc(MAXPATHLEN, KM_SLEEP); 168168404Spjd 169185029Spjd VERIFY(nvlist_pack(nvl, &buf, &buflen, NV_ENCODE_XDR, 170168404Spjd KM_SLEEP) == 0); 171168404Spjd 172168404Spjd /* 173168404Spjd * Write the configuration to disk. We need to do the traditional 174168404Spjd * 'write to temporary file, sync, move over original' to make sure we 175168404Spjd * always have a consistent view of the data. 176168404Spjd */ 177185029Spjd (void) snprintf(temp, MAXPATHLEN, "%s.tmp", dp->scd_path); 178168404Spjd 179251636Sdelphij err = vn_open(temp, UIO_SYSSPACE, oflags, 0644, &vp, CRCREAT, 0); 180251636Sdelphij if (err == 0) { 181251636Sdelphij err = vn_rdwr(UIO_WRITE, vp, buf, buflen, 0, UIO_SYSSPACE, 182251636Sdelphij 0, RLIM64_INFINITY, kcred, NULL); 183251636Sdelphij if (err == 0) 184251636Sdelphij err = VOP_FSYNC(vp, FSYNC, kcred, NULL); 185251636Sdelphij if (err == 0) 186251636Sdelphij err = vn_rename(temp, dp->scd_path, UIO_SYSSPACE); 187185029Spjd (void) VOP_CLOSE(vp, oflags, 1, 0, kcred, NULL); 188185029Spjd } 189168404Spjd 190185029Spjd (void) vn_remove(temp, UIO_SYSSPACE, RMFILE); 191185029Spjd 192185029Spjd kmem_free(buf, buflen); 193185029Spjd kmem_free(temp, MAXPATHLEN); 194251636Sdelphij return (err); 195185029Spjd} 196185029Spjd 197185029Spjd/* 198185029Spjd * Synchronize pool configuration to disk. This must be called with the 199254112Sdelphij * namespace lock held. Synchronizing the pool cache is typically done after 200254112Sdelphij * the configuration has been synced to the MOS. This exposes a window where 201254112Sdelphij * the MOS config will have been updated but the cache file has not. If 202254112Sdelphij * the system were to crash at that instant then the cached config may not 203254112Sdelphij * contain the correct information to open the pool and an explicity import 204254112Sdelphij * would be required. 205185029Spjd */ 206185029Spjdvoid 207185029Spjdspa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent) 208185029Spjd{ 209185029Spjd spa_config_dirent_t *dp, *tdp; 210185029Spjd nvlist_t *nvl; 211251636Sdelphij boolean_t ccw_failure; 212251636Sdelphij int error; 213185029Spjd 214185029Spjd ASSERT(MUTEX_HELD(&spa_namespace_lock)); 215185029Spjd 216209962Smm if (rootdir == NULL || !(spa_mode_global & FWRITE)) 217209962Smm return; 218209962Smm 219185029Spjd /* 220185029Spjd * Iterate over all cachefiles for the pool, past or present. When the 221185029Spjd * cachefile is changed, the new one is pushed onto this list, allowing 222185029Spjd * us to update previous cachefiles that no longer contain this pool. 223185029Spjd */ 224251636Sdelphij ccw_failure = B_FALSE; 225185029Spjd for (dp = list_head(&target->spa_config_list); dp != NULL; 226185029Spjd dp = list_next(&target->spa_config_list, dp)) { 227185029Spjd spa_t *spa = NULL; 228185029Spjd if (dp->scd_path == NULL) 229185029Spjd continue; 230185029Spjd 231185029Spjd /* 232185029Spjd * Iterate over all pools, adding any matching pools to 'nvl'. 233185029Spjd */ 234185029Spjd nvl = NULL; 235185029Spjd while ((spa = spa_next(spa)) != NULL) { 236249209Smm /* 237249209Smm * Skip over our own pool if we're about to remove 238249209Smm * ourselves from the spa namespace or any pool that 239249209Smm * is readonly. Since we cannot guarantee that a 240249209Smm * readonly pool would successfully import upon reboot, 241249209Smm * we don't allow them to be written to the cache file. 242249209Smm */ 243249209Smm if ((spa == target && removing) || 244249209Smm !spa_writeable(spa)) 245185029Spjd continue; 246185029Spjd 247185029Spjd mutex_enter(&spa->spa_props_lock); 248185029Spjd tdp = list_head(&spa->spa_config_list); 249185029Spjd if (spa->spa_config == NULL || 250185029Spjd tdp->scd_path == NULL || 251185029Spjd strcmp(tdp->scd_path, dp->scd_path) != 0) { 252185029Spjd mutex_exit(&spa->spa_props_lock); 253185029Spjd continue; 254185029Spjd } 255185029Spjd 256185029Spjd if (nvl == NULL) 257185029Spjd VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, 258185029Spjd KM_SLEEP) == 0); 259185029Spjd 260185029Spjd VERIFY(nvlist_add_nvlist(nvl, spa->spa_name, 261185029Spjd spa->spa_config) == 0); 262185029Spjd mutex_exit(&spa->spa_props_lock); 263185029Spjd } 264185029Spjd 265251636Sdelphij error = spa_config_write(dp, nvl); 266251636Sdelphij if (error != 0) 267251636Sdelphij ccw_failure = B_TRUE; 268185029Spjd nvlist_free(nvl); 269168404Spjd } 270168404Spjd 271251636Sdelphij if (ccw_failure) { 272251636Sdelphij /* 273251636Sdelphij * Keep trying so that configuration data is 274251636Sdelphij * written if/when any temporary filesystem 275251636Sdelphij * resource issues are resolved. 276251636Sdelphij */ 277251636Sdelphij if (target->spa_ccw_fail_time == 0) { 278251636Sdelphij zfs_ereport_post(FM_EREPORT_ZFS_CONFIG_CACHE_WRITE, 279251636Sdelphij target, NULL, NULL, 0, 0); 280251636Sdelphij } 281251636Sdelphij target->spa_ccw_fail_time = gethrtime(); 282251636Sdelphij spa_async_request(target, SPA_ASYNC_CONFIG_UPDATE); 283251636Sdelphij } else { 284251636Sdelphij /* 285251636Sdelphij * Do not rate limit future attempts to update 286251636Sdelphij * the config cache. 287251636Sdelphij */ 288251636Sdelphij target->spa_ccw_fail_time = 0; 289251636Sdelphij } 290251636Sdelphij 291185029Spjd /* 292185029Spjd * Remove any config entries older than the current one. 293185029Spjd */ 294185029Spjd dp = list_head(&target->spa_config_list); 295185029Spjd while ((tdp = list_next(&target->spa_config_list, dp)) != NULL) { 296185029Spjd list_remove(&target->spa_config_list, tdp); 297185029Spjd if (tdp->scd_path != NULL) 298185029Spjd spa_strfree(tdp->scd_path); 299185029Spjd kmem_free(tdp, sizeof (spa_config_dirent_t)); 300185029Spjd } 301168404Spjd 302168404Spjd spa_config_generation++; 303168404Spjd 304185029Spjd if (postsysevent) 305185029Spjd spa_event_notify(target, NULL, ESC_ZFS_CONFIG_SYNC); 306168404Spjd} 307168404Spjd 308168404Spjd/* 309168404Spjd * Sigh. Inside a local zone, we don't have access to /etc/zfs/zpool.cache, 310168404Spjd * and we don't want to allow the local zone to see all the pools anyway. 311168404Spjd * So we have to invent the ZFS_IOC_CONFIG ioctl to grab the configuration 312168404Spjd * information for all pool visible within the zone. 313168404Spjd */ 314168404Spjdnvlist_t * 315168404Spjdspa_all_configs(uint64_t *generation) 316168404Spjd{ 317168404Spjd nvlist_t *pools; 318185029Spjd spa_t *spa = NULL; 319168404Spjd 320168404Spjd if (*generation == spa_config_generation) 321168404Spjd return (NULL); 322168404Spjd 323168404Spjd VERIFY(nvlist_alloc(&pools, NV_UNIQUE_NAME, KM_SLEEP) == 0); 324168404Spjd 325168404Spjd mutex_enter(&spa_namespace_lock); 326168404Spjd while ((spa = spa_next(spa)) != NULL) { 327185029Spjd if (INGLOBALZONE(curthread) || 328168404Spjd zone_dataset_visible(spa_name(spa), NULL)) { 329185029Spjd mutex_enter(&spa->spa_props_lock); 330168404Spjd VERIFY(nvlist_add_nvlist(pools, spa_name(spa), 331168404Spjd spa->spa_config) == 0); 332185029Spjd mutex_exit(&spa->spa_props_lock); 333168404Spjd } 334168404Spjd } 335185029Spjd *generation = spa_config_generation; 336168404Spjd mutex_exit(&spa_namespace_lock); 337168404Spjd 338168404Spjd return (pools); 339168404Spjd} 340168404Spjd 341168404Spjdvoid 342168404Spjdspa_config_set(spa_t *spa, nvlist_t *config) 343168404Spjd{ 344185029Spjd mutex_enter(&spa->spa_props_lock); 345168404Spjd if (spa->spa_config != NULL) 346168404Spjd nvlist_free(spa->spa_config); 347168404Spjd spa->spa_config = config; 348185029Spjd mutex_exit(&spa->spa_props_lock); 349168404Spjd} 350168404Spjd 351168404Spjd/* 352168404Spjd * Generate the pool's configuration based on the current in-core state. 353251631Sdelphij * 354168404Spjd * We infer whether to generate a complete config or just one top-level config 355168404Spjd * based on whether vd is the root vdev. 356168404Spjd */ 357168404Spjdnvlist_t * 358168404Spjdspa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, int getstats) 359168404Spjd{ 360168404Spjd nvlist_t *config, *nvroot; 361168404Spjd vdev_t *rvd = spa->spa_root_vdev; 362168498Spjd unsigned long hostid = 0; 363185029Spjd boolean_t locked = B_FALSE; 364219089Spjd uint64_t split_guid; 365168404Spjd 366185029Spjd if (vd == NULL) { 367168404Spjd vd = rvd; 368185029Spjd locked = B_TRUE; 369185029Spjd spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); 370185029Spjd } 371168404Spjd 372185029Spjd ASSERT(spa_config_held(spa, SCL_CONFIG | SCL_STATE, RW_READER) == 373185029Spjd (SCL_CONFIG | SCL_STATE)); 374185029Spjd 375168404Spjd /* 376168404Spjd * If txg is -1, report the current value of spa->spa_config_txg. 377168404Spjd */ 378168404Spjd if (txg == -1ULL) 379168404Spjd txg = spa->spa_config_txg; 380168404Spjd 381168404Spjd VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, KM_SLEEP) == 0); 382168404Spjd 383168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, 384168404Spjd spa_version(spa)) == 0); 385168404Spjd VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, 386168404Spjd spa_name(spa)) == 0); 387168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, 388168404Spjd spa_state(spa)) == 0); 389168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, 390168404Spjd txg) == 0); 391168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, 392168404Spjd spa_guid(spa)) == 0); 393228103Smm VERIFY(spa->spa_comment == NULL || nvlist_add_string(config, 394228103Smm ZPOOL_CONFIG_COMMENT, spa->spa_comment) == 0); 395228103Smm 396228103Smm 397219089Spjd#ifdef _KERNEL 398219089Spjd hostid = zone_get_hostid(NULL); 399219089Spjd#else /* _KERNEL */ 400219089Spjd /* 401219089Spjd * We're emulating the system's hostid in userland, so we can't use 402219089Spjd * zone_get_hostid(). 403219089Spjd */ 404168498Spjd (void) ddi_strtoul(hw_serial, NULL, 10, &hostid); 405219089Spjd#endif /* _KERNEL */ 406185029Spjd if (hostid != 0) { 407185029Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID, 408185029Spjd hostid) == 0); 409185029Spjd } 410168498Spjd VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME, 411168498Spjd utsname.nodename) == 0); 412168404Spjd 413168404Spjd if (vd != rvd) { 414168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TOP_GUID, 415168404Spjd vd->vdev_top->vdev_guid) == 0); 416168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_GUID, 417168404Spjd vd->vdev_guid) == 0); 418168404Spjd if (vd->vdev_isspare) 419168404Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_SPARE, 420168404Spjd 1ULL) == 0); 421185029Spjd if (vd->vdev_islog) 422185029Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_LOG, 423185029Spjd 1ULL) == 0); 424168404Spjd vd = vd->vdev_top; /* label contains top config */ 425219089Spjd } else { 426219089Spjd /* 427219089Spjd * Only add the (potentially large) split information 428219089Spjd * in the mos config, and not in the vdev labels 429219089Spjd */ 430219089Spjd if (spa->spa_config_splitting != NULL) 431219089Spjd VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_SPLIT, 432219089Spjd spa->spa_config_splitting) == 0); 433168404Spjd } 434168404Spjd 435219089Spjd /* 436219089Spjd * Add the top-level config. We even add this on pools which 437219089Spjd * don't support holes in the namespace. 438219089Spjd */ 439219089Spjd vdev_top_config_generate(spa, config); 440219089Spjd 441219089Spjd /* 442219089Spjd * If we're splitting, record the original pool's guid. 443219089Spjd */ 444219089Spjd if (spa->spa_config_splitting != NULL && 445219089Spjd nvlist_lookup_uint64(spa->spa_config_splitting, 446219089Spjd ZPOOL_CONFIG_SPLIT_GUID, &split_guid) == 0) { 447219089Spjd VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_SPLIT_GUID, 448219089Spjd split_guid) == 0); 449219089Spjd } 450219089Spjd 451219089Spjd nvroot = vdev_config_generate(spa, vd, getstats, 0); 452168404Spjd VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); 453168404Spjd nvlist_free(nvroot); 454168404Spjd 455236884Smm /* 456236884Smm * Store what's necessary for reading the MOS in the label. 457236884Smm */ 458236884Smm VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURES_FOR_READ, 459236884Smm spa->spa_label_features) == 0); 460236884Smm 461219089Spjd if (getstats && spa_load_state(spa) == SPA_LOAD_NONE) { 462219089Spjd ddt_histogram_t *ddh; 463219089Spjd ddt_stat_t *dds; 464219089Spjd ddt_object_t *ddo; 465219089Spjd 466219089Spjd ddh = kmem_zalloc(sizeof (ddt_histogram_t), KM_SLEEP); 467219089Spjd ddt_get_dedup_histogram(spa, ddh); 468219089Spjd VERIFY(nvlist_add_uint64_array(config, 469219089Spjd ZPOOL_CONFIG_DDT_HISTOGRAM, 470219089Spjd (uint64_t *)ddh, sizeof (*ddh) / sizeof (uint64_t)) == 0); 471219089Spjd kmem_free(ddh, sizeof (ddt_histogram_t)); 472219089Spjd 473219089Spjd ddo = kmem_zalloc(sizeof (ddt_object_t), KM_SLEEP); 474219089Spjd ddt_get_dedup_object_stats(spa, ddo); 475219089Spjd VERIFY(nvlist_add_uint64_array(config, 476219089Spjd ZPOOL_CONFIG_DDT_OBJ_STATS, 477219089Spjd (uint64_t *)ddo, sizeof (*ddo) / sizeof (uint64_t)) == 0); 478219089Spjd kmem_free(ddo, sizeof (ddt_object_t)); 479219089Spjd 480219089Spjd dds = kmem_zalloc(sizeof (ddt_stat_t), KM_SLEEP); 481219089Spjd ddt_get_dedup_stats(spa, dds); 482219089Spjd VERIFY(nvlist_add_uint64_array(config, 483219089Spjd ZPOOL_CONFIG_DDT_STATS, 484219089Spjd (uint64_t *)dds, sizeof (*dds) / sizeof (uint64_t)) == 0); 485219089Spjd kmem_free(dds, sizeof (ddt_stat_t)); 486219089Spjd } 487219089Spjd 488185029Spjd if (locked) 489185029Spjd spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); 490185029Spjd 491168404Spjd return (config); 492168404Spjd} 493168404Spjd 494168404Spjd/* 495185029Spjd * Update all disk labels, generate a fresh config based on the current 496185029Spjd * in-core state, and sync the global config cache (do not sync the config 497185029Spjd * cache if this is a booting rootpool). 498185029Spjd */ 499185029Spjdvoid 500209962Smmspa_config_update(spa_t *spa, int what) 501185029Spjd{ 502168404Spjd vdev_t *rvd = spa->spa_root_vdev; 503168404Spjd uint64_t txg; 504168404Spjd int c; 505168404Spjd 506168404Spjd ASSERT(MUTEX_HELD(&spa_namespace_lock)); 507168404Spjd 508185029Spjd spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 509168404Spjd txg = spa_last_synced_txg(spa) + 1; 510168404Spjd if (what == SPA_CONFIG_UPDATE_POOL) { 511168404Spjd vdev_config_dirty(rvd); 512168404Spjd } else { 513168404Spjd /* 514168404Spjd * If we have top-level vdevs that were added but have 515168404Spjd * not yet been prepared for allocation, do that now. 516168404Spjd * (It's safe now because the config cache is up to date, 517168404Spjd * so it will be able to translate the new DVAs.) 518168404Spjd * See comments in spa_vdev_add() for full details. 519168404Spjd */ 520168404Spjd for (c = 0; c < rvd->vdev_children; c++) { 521168404Spjd vdev_t *tvd = rvd->vdev_child[c]; 522254591Sgibbs if (tvd->vdev_ms_array == 0) { 523254591Sgibbs vdev_ashift_optimize(tvd); 524219089Spjd vdev_metaslab_set_size(tvd); 525254591Sgibbs } 526219089Spjd vdev_expand(tvd, txg); 527168404Spjd } 528168404Spjd } 529185029Spjd spa_config_exit(spa, SCL_ALL, FTAG); 530168404Spjd 531168404Spjd /* 532168404Spjd * Wait for the mosconfig to be regenerated and synced. 533168404Spjd */ 534168404Spjd txg_wait_synced(spa->spa_dsl_pool, txg); 535168404Spjd 536168404Spjd /* 537168404Spjd * Update the global config cache to reflect the new mosconfig. 538168404Spjd */ 539209962Smm if (!spa->spa_is_root) 540185029Spjd spa_config_sync(spa, B_FALSE, what != SPA_CONFIG_UPDATE_POOL); 541168404Spjd 542168404Spjd if (what == SPA_CONFIG_UPDATE_POOL) 543209962Smm spa_config_update(spa, SPA_CONFIG_UPDATE_VDEVS); 544168404Spjd} 545