1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 2199653d4eSeschrock 22fa9e4066Sahrens /* 235679c89fSjv * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24fa9e4066Sahrens * Use is subject to license terms. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #include <sys/spa.h> 28fa9e4066Sahrens #include <sys/spa_impl.h> 29fa9e4066Sahrens #include <sys/nvpair.h> 30fa9e4066Sahrens #include <sys/uio.h> 31fa9e4066Sahrens #include <sys/fs/zfs.h> 32fa9e4066Sahrens #include <sys/vdev_impl.h> 33fa9e4066Sahrens #include <sys/zfs_ioctl.h> 3495173954Sek #include <sys/utsname.h> 3595173954Sek #include <sys/systeminfo.h> 3695173954Sek #include <sys/sunddi.h> 37ea8dc4b6Seschrock #ifdef _KERNEL 38ea8dc4b6Seschrock #include <sys/kobj.h> 395679c89fSjv #include <sys/zone.h> 40ea8dc4b6Seschrock #endif 41ea8dc4b6Seschrock 42fa9e4066Sahrens /* 43fa9e4066Sahrens * Pool configuration repository. 44fa9e4066Sahrens * 452f8aaab3Seschrock * Pool configuration is stored as a packed nvlist on the filesystem. By 462f8aaab3Seschrock * default, all pools are stored in /etc/zfs/zpool.cache and loaded on boot 472f8aaab3Seschrock * (when the ZFS module is loaded). Pools can also have the 'cachefile' 482f8aaab3Seschrock * property set that allows them to be stored in an alternate location until 492f8aaab3Seschrock * the control of external software. 50fa9e4066Sahrens * 512f8aaab3Seschrock * For each cache file, we have a single nvlist which holds all the 522f8aaab3Seschrock * configuration information. When the module loads, we read this information 532f8aaab3Seschrock * from /etc/zfs/zpool.cache and populate the SPA namespace. This namespace is 542f8aaab3Seschrock * maintained independently in spa.c. Whenever the namespace is modified, or 552f8aaab3Seschrock * the configuration of a pool is changed, we call spa_config_sync(), which 562f8aaab3Seschrock * walks through all the active pools and writes the configuration to disk. 57fa9e4066Sahrens */ 58fa9e4066Sahrens 59fa9e4066Sahrens static uint64_t spa_config_generation = 1; 60fa9e4066Sahrens 61fa9e4066Sahrens /* 62fa9e4066Sahrens * This can be overridden in userland to preserve an alternate namespace for 63fa9e4066Sahrens * userland pools when doing testing. 64fa9e4066Sahrens */ 65c5904d13Seschrock const char *spa_config_path = ZPOOL_CACHE; 66fa9e4066Sahrens 67fa9e4066Sahrens /* 68fa9e4066Sahrens * Called when the module is first loaded, this routine loads the configuration 69fa9e4066Sahrens * file into the SPA namespace. It does not actually open or load the pools; it 70fa9e4066Sahrens * only populates the namespace. 71fa9e4066Sahrens */ 72fa9e4066Sahrens void 73fa9e4066Sahrens spa_config_load(void) 74fa9e4066Sahrens { 75fa9e4066Sahrens void *buf = NULL; 76fa9e4066Sahrens nvlist_t *nvlist, *child; 77fa9e4066Sahrens nvpair_t *nvpair; 78e14bb325SJeff Bonwick char *pathname; 79ea8dc4b6Seschrock struct _buf *file; 80b1b8ab34Slling uint64_t fsize; 81fa9e4066Sahrens 82fa9e4066Sahrens /* 83fa9e4066Sahrens * Open the configuration file. 84fa9e4066Sahrens */ 85e14bb325SJeff Bonwick pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP); 86e14bb325SJeff Bonwick 87e14bb325SJeff Bonwick (void) snprintf(pathname, MAXPATHLEN, "%s%s", 88c5904d13Seschrock (rootdir != NULL) ? "./" : "", spa_config_path); 89ea8dc4b6Seschrock 90ea8dc4b6Seschrock file = kobj_open_file(pathname); 91e14bb325SJeff Bonwick 92e14bb325SJeff Bonwick kmem_free(pathname, MAXPATHLEN); 93e14bb325SJeff Bonwick 94ea8dc4b6Seschrock if (file == (struct _buf *)-1) 95fa9e4066Sahrens return; 96fa9e4066Sahrens 97b1b8ab34Slling if (kobj_get_filesize(file, &fsize) != 0) 98fa9e4066Sahrens goto out; 99fa9e4066Sahrens 100b1b8ab34Slling buf = kmem_alloc(fsize, KM_SLEEP); 101fa9e4066Sahrens 102ea8dc4b6Seschrock /* 103ea8dc4b6Seschrock * Read the nvlist from the file. 104ea8dc4b6Seschrock */ 105b1b8ab34Slling if (kobj_read_file(file, buf, fsize, 0) < 0) 106fa9e4066Sahrens goto out; 107fa9e4066Sahrens 108fa9e4066Sahrens /* 109fa9e4066Sahrens * Unpack the nvlist. 110fa9e4066Sahrens */ 111b1b8ab34Slling if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0) 112fa9e4066Sahrens goto out; 113fa9e4066Sahrens 114fa9e4066Sahrens /* 115fa9e4066Sahrens * Iterate over all elements in the nvlist, creating a new spa_t for 116fa9e4066Sahrens * each one with the specified configuration. 117fa9e4066Sahrens */ 118fa9e4066Sahrens mutex_enter(&spa_namespace_lock); 119fa9e4066Sahrens nvpair = NULL; 120fa9e4066Sahrens while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) { 121fa9e4066Sahrens if (nvpair_type(nvpair) != DATA_TYPE_NVLIST) 122fa9e4066Sahrens continue; 123fa9e4066Sahrens 124fa9e4066Sahrens VERIFY(nvpair_value_nvlist(nvpair, &child) == 0); 125fa9e4066Sahrens 126fa9e4066Sahrens if (spa_lookup(nvpair_name(nvpair)) != NULL) 127fa9e4066Sahrens continue; 128468c413aSTim Haley (void) spa_add(nvpair_name(nvpair), child, NULL); 129fa9e4066Sahrens } 130fa9e4066Sahrens mutex_exit(&spa_namespace_lock); 131fa9e4066Sahrens 132fa9e4066Sahrens nvlist_free(nvlist); 133fa9e4066Sahrens 134fa9e4066Sahrens out: 135fa9e4066Sahrens if (buf != NULL) 136b1b8ab34Slling kmem_free(buf, fsize); 137fa9e4066Sahrens 138ea8dc4b6Seschrock kobj_close_file(file); 139fa9e4066Sahrens } 140fa9e4066Sahrens 1412f8aaab3Seschrock static void 142c5904d13Seschrock spa_config_write(spa_config_dirent_t *dp, nvlist_t *nvl) 1432f8aaab3Seschrock { 1442f8aaab3Seschrock size_t buflen; 1452f8aaab3Seschrock char *buf; 1462f8aaab3Seschrock vnode_t *vp; 1472f8aaab3Seschrock int oflags = FWRITE | FTRUNC | FCREAT | FOFFMAX; 148e14bb325SJeff Bonwick char *temp; 149c5904d13Seschrock 150c5904d13Seschrock /* 151c5904d13Seschrock * If the nvlist is empty (NULL), then remove the old cachefile. 152c5904d13Seschrock */ 153c5904d13Seschrock if (nvl == NULL) { 154c5904d13Seschrock (void) vn_remove(dp->scd_path, UIO_SYSSPACE, RMFILE); 155c5904d13Seschrock return; 156c5904d13Seschrock } 1572f8aaab3Seschrock 158fa9e4066Sahrens /* 159fa9e4066Sahrens * Pack the configuration into a buffer. 160fa9e4066Sahrens */ 161c5904d13Seschrock VERIFY(nvlist_size(nvl, &buflen, NV_ENCODE_XDR) == 0); 162fa9e4066Sahrens 163fa9e4066Sahrens buf = kmem_alloc(buflen, KM_SLEEP); 164e14bb325SJeff Bonwick temp = kmem_zalloc(MAXPATHLEN, KM_SLEEP); 165fa9e4066Sahrens 166c5904d13Seschrock VERIFY(nvlist_pack(nvl, &buf, &buflen, NV_ENCODE_XDR, 167ea8dc4b6Seschrock KM_SLEEP) == 0); 168fa9e4066Sahrens 169fa9e4066Sahrens /* 170fa9e4066Sahrens * Write the configuration to disk. We need to do the traditional 171fa9e4066Sahrens * 'write to temporary file, sync, move over original' to make sure we 172fa9e4066Sahrens * always have a consistent view of the data. 173fa9e4066Sahrens */ 174e14bb325SJeff Bonwick (void) snprintf(temp, MAXPATHLEN, "%s.tmp", dp->scd_path); 175fa9e4066Sahrens 176e14bb325SJeff Bonwick if (vn_open(temp, UIO_SYSSPACE, oflags, 0644, &vp, CRCREAT, 0) == 0) { 177e14bb325SJeff Bonwick if (vn_rdwr(UIO_WRITE, vp, buf, buflen, 0, UIO_SYSSPACE, 178e14bb325SJeff Bonwick 0, RLIM64_INFINITY, kcred, NULL) == 0 && 179e14bb325SJeff Bonwick VOP_FSYNC(vp, FSYNC, kcred, NULL) == 0) { 180e14bb325SJeff Bonwick (void) vn_rename(temp, dp->scd_path, UIO_SYSSPACE); 181e14bb325SJeff Bonwick } 182e14bb325SJeff Bonwick (void) VOP_CLOSE(vp, oflags, 1, 0, kcred, NULL); 183e14bb325SJeff Bonwick VN_RELE(vp); 184fa9e4066Sahrens } 185fa9e4066Sahrens 186e14bb325SJeff Bonwick (void) vn_remove(temp, UIO_SYSSPACE, RMFILE); 187fa9e4066Sahrens 188fa9e4066Sahrens kmem_free(buf, buflen); 189e14bb325SJeff Bonwick kmem_free(temp, MAXPATHLEN); 1902f8aaab3Seschrock } 1912f8aaab3Seschrock 1922f8aaab3Seschrock /* 193c5904d13Seschrock * Synchronize pool configuration to disk. This must be called with the 194c5904d13Seschrock * namespace lock held. 1952f8aaab3Seschrock */ 1962f8aaab3Seschrock void 197c5904d13Seschrock spa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent) 1982f8aaab3Seschrock { 199c5904d13Seschrock spa_config_dirent_t *dp, *tdp; 200c5904d13Seschrock nvlist_t *nvl; 2012f8aaab3Seschrock 2022f8aaab3Seschrock ASSERT(MUTEX_HELD(&spa_namespace_lock)); 2032f8aaab3Seschrock 2044f0f5e5bSVictor Latushkin if (rootdir == NULL || !(spa_mode_global & FWRITE)) 2059fddc96aSGeorge Wilson return; 2069fddc96aSGeorge Wilson 207c5904d13Seschrock /* 208c5904d13Seschrock * Iterate over all cachefiles for the pool, past or present. When the 209c5904d13Seschrock * cachefile is changed, the new one is pushed onto this list, allowing 210c5904d13Seschrock * us to update previous cachefiles that no longer contain this pool. 211c5904d13Seschrock */ 212c5904d13Seschrock for (dp = list_head(&target->spa_config_list); dp != NULL; 213c5904d13Seschrock dp = list_next(&target->spa_config_list, dp)) { 214e14bb325SJeff Bonwick spa_t *spa = NULL; 215c5904d13Seschrock if (dp->scd_path == NULL) 216c5904d13Seschrock continue; 217c5904d13Seschrock 218c5904d13Seschrock /* 219c5904d13Seschrock * Iterate over all pools, adding any matching pools to 'nvl'. 220c5904d13Seschrock */ 221c5904d13Seschrock nvl = NULL; 222c5904d13Seschrock while ((spa = spa_next(spa)) != NULL) { 223c5904d13Seschrock if (spa == target && removing) 224c5904d13Seschrock continue; 225c5904d13Seschrock 226e14bb325SJeff Bonwick mutex_enter(&spa->spa_props_lock); 227c5904d13Seschrock tdp = list_head(&spa->spa_config_list); 228e14bb325SJeff Bonwick if (spa->spa_config == NULL || 229e14bb325SJeff Bonwick tdp->scd_path == NULL || 230e14bb325SJeff Bonwick strcmp(tdp->scd_path, dp->scd_path) != 0) { 231e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 232c5904d13Seschrock continue; 233e14bb325SJeff Bonwick } 234c5904d13Seschrock 235c5904d13Seschrock if (nvl == NULL) 236c5904d13Seschrock VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, 237c5904d13Seschrock KM_SLEEP) == 0); 238c5904d13Seschrock 239c5904d13Seschrock VERIFY(nvlist_add_nvlist(nvl, spa->spa_name, 240c5904d13Seschrock spa->spa_config) == 0); 241e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 242c5904d13Seschrock } 243c5904d13Seschrock 244c5904d13Seschrock spa_config_write(dp, nvl); 245c5904d13Seschrock nvlist_free(nvl); 246c5904d13Seschrock } 2472f8aaab3Seschrock 2482f8aaab3Seschrock /* 249c5904d13Seschrock * Remove any config entries older than the current one. 2502f8aaab3Seschrock */ 251c5904d13Seschrock dp = list_head(&target->spa_config_list); 252c5904d13Seschrock while ((tdp = list_next(&target->spa_config_list, dp)) != NULL) { 253c5904d13Seschrock list_remove(&target->spa_config_list, tdp); 254c5904d13Seschrock if (tdp->scd_path != NULL) 255c5904d13Seschrock spa_strfree(tdp->scd_path); 256c5904d13Seschrock kmem_free(tdp, sizeof (spa_config_dirent_t)); 2572f8aaab3Seschrock } 2582f8aaab3Seschrock 2592f8aaab3Seschrock spa_config_generation++; 260c5904d13Seschrock 261c5904d13Seschrock if (postsysevent) 262c5904d13Seschrock spa_event_notify(target, NULL, ESC_ZFS_CONFIG_SYNC); 263fa9e4066Sahrens } 264fa9e4066Sahrens 265fa9e4066Sahrens /* 2660373e76bSbonwick * Sigh. Inside a local zone, we don't have access to /etc/zfs/zpool.cache, 267fa9e4066Sahrens * and we don't want to allow the local zone to see all the pools anyway. 268fa9e4066Sahrens * So we have to invent the ZFS_IOC_CONFIG ioctl to grab the configuration 269fa9e4066Sahrens * information for all pool visible within the zone. 270fa9e4066Sahrens */ 271fa9e4066Sahrens nvlist_t * 272fa9e4066Sahrens spa_all_configs(uint64_t *generation) 273fa9e4066Sahrens { 274fa9e4066Sahrens nvlist_t *pools; 275e14bb325SJeff Bonwick spa_t *spa = NULL; 276fa9e4066Sahrens 277fa9e4066Sahrens if (*generation == spa_config_generation) 278fa9e4066Sahrens return (NULL); 279fa9e4066Sahrens 280ea8dc4b6Seschrock VERIFY(nvlist_alloc(&pools, NV_UNIQUE_NAME, KM_SLEEP) == 0); 281fa9e4066Sahrens 282fa9e4066Sahrens mutex_enter(&spa_namespace_lock); 283fa9e4066Sahrens while ((spa = spa_next(spa)) != NULL) { 284fa9e4066Sahrens if (INGLOBALZONE(curproc) || 285fa9e4066Sahrens zone_dataset_visible(spa_name(spa), NULL)) { 286e14bb325SJeff Bonwick mutex_enter(&spa->spa_props_lock); 287fa9e4066Sahrens VERIFY(nvlist_add_nvlist(pools, spa_name(spa), 288fa9e4066Sahrens spa->spa_config) == 0); 289e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 290fa9e4066Sahrens } 291fa9e4066Sahrens } 292fa9e4066Sahrens *generation = spa_config_generation; 293e14bb325SJeff Bonwick mutex_exit(&spa_namespace_lock); 294fa9e4066Sahrens 295fa9e4066Sahrens return (pools); 296fa9e4066Sahrens } 297fa9e4066Sahrens 298fa9e4066Sahrens void 299fa9e4066Sahrens spa_config_set(spa_t *spa, nvlist_t *config) 300fa9e4066Sahrens { 301e14bb325SJeff Bonwick mutex_enter(&spa->spa_props_lock); 302fa9e4066Sahrens if (spa->spa_config != NULL) 303fa9e4066Sahrens nvlist_free(spa->spa_config); 304fa9e4066Sahrens spa->spa_config = config; 305e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 306fa9e4066Sahrens } 307fa9e4066Sahrens 308468c413aSTim Haley /* Add discovered rewind info, if any to the provided nvlist */ 309468c413aSTim Haley void 310468c413aSTim Haley spa_rewind_data_to_nvlist(spa_t *spa, nvlist_t *tonvl) 311468c413aSTim Haley { 312468c413aSTim Haley int64_t loss = 0; 313468c413aSTim Haley 314468c413aSTim Haley if (tonvl == NULL || spa->spa_load_txg == 0) 315468c413aSTim Haley return; 316468c413aSTim Haley 317468c413aSTim Haley VERIFY(nvlist_add_uint64(tonvl, ZPOOL_CONFIG_LOAD_TIME, 318468c413aSTim Haley spa->spa_load_txg_ts) == 0); 319468c413aSTim Haley if (spa->spa_last_ubsync_txg) 320468c413aSTim Haley loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts; 321468c413aSTim Haley VERIFY(nvlist_add_int64(tonvl, ZPOOL_CONFIG_REWIND_TIME, loss) == 0); 322468c413aSTim Haley VERIFY(nvlist_add_uint64(tonvl, ZPOOL_CONFIG_LOAD_DATA_ERRORS, 323468c413aSTim Haley spa->spa_load_data_errors) == 0); 324468c413aSTim Haley } 325468c413aSTim Haley 326fa9e4066Sahrens /* 327fa9e4066Sahrens * Generate the pool's configuration based on the current in-core state. 328fa9e4066Sahrens * We infer whether to generate a complete config or just one top-level config 329fa9e4066Sahrens * based on whether vd is the root vdev. 330fa9e4066Sahrens */ 331fa9e4066Sahrens nvlist_t * 332fa9e4066Sahrens spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, int getstats) 333fa9e4066Sahrens { 334fa9e4066Sahrens nvlist_t *config, *nvroot; 335fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 33695173954Sek unsigned long hostid = 0; 337e14bb325SJeff Bonwick boolean_t locked = B_FALSE; 338fa9e4066Sahrens 339e14bb325SJeff Bonwick if (vd == NULL) { 340fa9e4066Sahrens vd = rvd; 341e14bb325SJeff Bonwick locked = B_TRUE; 342e14bb325SJeff Bonwick spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); 343e14bb325SJeff Bonwick } 344e14bb325SJeff Bonwick 345e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_CONFIG | SCL_STATE, RW_READER) == 346e14bb325SJeff Bonwick (SCL_CONFIG | SCL_STATE)); 347fa9e4066Sahrens 348fa9e4066Sahrens /* 349fa9e4066Sahrens * If txg is -1, report the current value of spa->spa_config_txg. 350fa9e4066Sahrens */ 351fa9e4066Sahrens if (txg == -1ULL) 352fa9e4066Sahrens txg = spa->spa_config_txg; 353fa9e4066Sahrens 354ea8dc4b6Seschrock VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, KM_SLEEP) == 0); 355fa9e4066Sahrens 356fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, 35799653d4eSeschrock spa_version(spa)) == 0); 358fa9e4066Sahrens VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, 359fa9e4066Sahrens spa_name(spa)) == 0); 360fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, 361fa9e4066Sahrens spa_state(spa)) == 0); 362fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, 363fa9e4066Sahrens txg) == 0); 364fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, 365fa9e4066Sahrens spa_guid(spa)) == 0); 3665679c89fSjv #ifdef _KERNEL 3675679c89fSjv hostid = zone_get_hostid(NULL); 3685679c89fSjv #else /* _KERNEL */ 3695679c89fSjv /* 3705679c89fSjv * We're emulating the system's hostid in userland, so we can't use 3715679c89fSjv * zone_get_hostid(). 3725679c89fSjv */ 37395173954Sek (void) ddi_strtoul(hw_serial, NULL, 10, &hostid); 3745679c89fSjv #endif /* _KERNEL */ 37517194a52Slling if (hostid != 0) { 37617194a52Slling VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID, 3778654d025Sperrin hostid) == 0); 37817194a52Slling } 37995173954Sek VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME, 38095173954Sek utsname.nodename) == 0); 381fa9e4066Sahrens 382fa9e4066Sahrens if (vd != rvd) { 383fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TOP_GUID, 384fa9e4066Sahrens vd->vdev_top->vdev_guid) == 0); 385fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_GUID, 386fa9e4066Sahrens vd->vdev_guid) == 0); 38799653d4eSeschrock if (vd->vdev_isspare) 38899653d4eSeschrock VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_SPARE, 38999653d4eSeschrock 1ULL) == 0); 3908654d025Sperrin if (vd->vdev_islog) 3918654d025Sperrin VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_LOG, 3928654d025Sperrin 1ULL) == 0); 393fa9e4066Sahrens vd = vd->vdev_top; /* label contains top config */ 394fa9e4066Sahrens } 395fa9e4066Sahrens 39688ecc943SGeorge Wilson /* 39788ecc943SGeorge Wilson * Add the top-level config. We even add this on pools which 39888ecc943SGeorge Wilson * don't support holes in the namespace as older pools will 39988ecc943SGeorge Wilson * just ignore it. 40088ecc943SGeorge Wilson */ 40188ecc943SGeorge Wilson vdev_top_config_generate(spa, config); 40288ecc943SGeorge Wilson 403fa94a07fSbrendan nvroot = vdev_config_generate(spa, vd, getstats, B_FALSE, B_FALSE); 404fa9e4066Sahrens VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); 405fa9e4066Sahrens nvlist_free(nvroot); 406fa9e4066Sahrens 407*9eb19f4dSGeorge Wilson if (getstats && spa_load_state(spa) == SPA_LOAD_NONE) { 408*9eb19f4dSGeorge Wilson ddt_histogram_t *ddh; 409*9eb19f4dSGeorge Wilson ddt_stat_t *dds; 410*9eb19f4dSGeorge Wilson ddt_object_t *ddo; 411*9eb19f4dSGeorge Wilson 412*9eb19f4dSGeorge Wilson ddh = kmem_zalloc(sizeof (ddt_histogram_t), KM_SLEEP); 413*9eb19f4dSGeorge Wilson ddt_get_dedup_histogram(spa, ddh); 414*9eb19f4dSGeorge Wilson VERIFY(nvlist_add_uint64_array(config, 415*9eb19f4dSGeorge Wilson ZPOOL_CONFIG_DDT_HISTOGRAM, 416*9eb19f4dSGeorge Wilson (uint64_t *)ddh, sizeof (*ddh) / sizeof (uint64_t)) == 0); 417*9eb19f4dSGeorge Wilson kmem_free(ddh, sizeof (ddt_histogram_t)); 418*9eb19f4dSGeorge Wilson 419*9eb19f4dSGeorge Wilson ddo = kmem_zalloc(sizeof (ddt_object_t), KM_SLEEP); 420*9eb19f4dSGeorge Wilson ddt_get_dedup_object_stats(spa, ddo); 421*9eb19f4dSGeorge Wilson VERIFY(nvlist_add_uint64_array(config, 422*9eb19f4dSGeorge Wilson ZPOOL_CONFIG_DDT_OBJ_STATS, 423*9eb19f4dSGeorge Wilson (uint64_t *)ddo, sizeof (*ddo) / sizeof (uint64_t)) == 0); 424*9eb19f4dSGeorge Wilson kmem_free(ddo, sizeof (ddt_object_t)); 425*9eb19f4dSGeorge Wilson 426*9eb19f4dSGeorge Wilson dds = kmem_zalloc(sizeof (ddt_stat_t), KM_SLEEP); 427*9eb19f4dSGeorge Wilson ddt_get_dedup_stats(spa, dds); 428*9eb19f4dSGeorge Wilson VERIFY(nvlist_add_uint64_array(config, 429*9eb19f4dSGeorge Wilson ZPOOL_CONFIG_DDT_STATS, 430*9eb19f4dSGeorge Wilson (uint64_t *)dds, sizeof (*dds) / sizeof (uint64_t)) == 0); 431*9eb19f4dSGeorge Wilson kmem_free(dds, sizeof (ddt_stat_t)); 432*9eb19f4dSGeorge Wilson } 433*9eb19f4dSGeorge Wilson 434468c413aSTim Haley spa_rewind_data_to_nvlist(spa, config); 435468c413aSTim Haley 436e14bb325SJeff Bonwick if (locked) 437e14bb325SJeff Bonwick spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); 438e14bb325SJeff Bonwick 439fa9e4066Sahrens return (config); 440fa9e4066Sahrens } 4410373e76bSbonwick 442e7cbe64fSgw /* 443e7cbe64fSgw * Update all disk labels, generate a fresh config based on the current 444e7cbe64fSgw * in-core state, and sync the global config cache (do not sync the config 445e7cbe64fSgw * cache if this is a booting rootpool). 446e7cbe64fSgw */ 447e7cbe64fSgw void 448bc758434SLin Ling spa_config_update(spa_t *spa, int what) 4490373e76bSbonwick { 4500373e76bSbonwick vdev_t *rvd = spa->spa_root_vdev; 4510373e76bSbonwick uint64_t txg; 4520373e76bSbonwick int c; 4530373e76bSbonwick 4540373e76bSbonwick ASSERT(MUTEX_HELD(&spa_namespace_lock)); 4550373e76bSbonwick 456e14bb325SJeff Bonwick spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4570373e76bSbonwick txg = spa_last_synced_txg(spa) + 1; 4580373e76bSbonwick if (what == SPA_CONFIG_UPDATE_POOL) { 4590373e76bSbonwick vdev_config_dirty(rvd); 4600373e76bSbonwick } else { 4610373e76bSbonwick /* 4620373e76bSbonwick * If we have top-level vdevs that were added but have 4630373e76bSbonwick * not yet been prepared for allocation, do that now. 4640373e76bSbonwick * (It's safe now because the config cache is up to date, 4650373e76bSbonwick * so it will be able to translate the new DVAs.) 4660373e76bSbonwick * See comments in spa_vdev_add() for full details. 4670373e76bSbonwick */ 4680373e76bSbonwick for (c = 0; c < rvd->vdev_children; c++) { 4690373e76bSbonwick vdev_t *tvd = rvd->vdev_child[c]; 470573ca77eSGeorge Wilson if (tvd->vdev_ms_array == 0) 471573ca77eSGeorge Wilson vdev_metaslab_set_size(tvd); 472573ca77eSGeorge Wilson vdev_expand(tvd, txg); 4730373e76bSbonwick } 4740373e76bSbonwick } 475e14bb325SJeff Bonwick spa_config_exit(spa, SCL_ALL, FTAG); 4760373e76bSbonwick 4770373e76bSbonwick /* 4780373e76bSbonwick * Wait for the mosconfig to be regenerated and synced. 4790373e76bSbonwick */ 4800373e76bSbonwick txg_wait_synced(spa->spa_dsl_pool, txg); 4810373e76bSbonwick 4820373e76bSbonwick /* 4830373e76bSbonwick * Update the global config cache to reflect the new mosconfig. 4840373e76bSbonwick */ 485bc758434SLin Ling if (!spa->spa_is_root) 486c5904d13Seschrock spa_config_sync(spa, B_FALSE, what != SPA_CONFIG_UPDATE_POOL); 4870373e76bSbonwick 4880373e76bSbonwick if (what == SPA_CONFIG_UPDATE_POOL) 489bc758434SLin Ling spa_config_update(spa, SPA_CONFIG_UPDATE_VDEVS); 4900373e76bSbonwick } 491