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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
428870ff | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
944a3724 | 24 | * Copyright (c) 2011, 2019 by Delphix. All rights reserved. |
733b5722 | 25 | * Copyright (c) 2018, Nexenta Systems, Inc. All rights reserved. |
0c66c32d | 26 | * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
3c67d83a | 27 | * Copyright 2013 Saso Kiselkov. All rights reserved. |
e550644f BB |
28 | * Copyright (c) 2014 Integros [integros.com] |
29 | * Copyright 2016 Toomas Soome <tsoome@me.com> | |
a0bd735a | 30 | * Copyright (c) 2016 Actifio, Inc. All rights reserved. |
f65fbee1 | 31 | * Copyright 2018 Joyent, Inc. |
0ea05c64 | 32 | * Copyright (c) 2017 Datto Inc. |
12fa0466 | 33 | * Copyright 2017 Joyent, Inc. |
cc99f275 | 34 | * Copyright (c) 2017, Intel Corporation. |
a38718a6 | 35 | */ |
34dc7c2f | 36 | |
34dc7c2f | 37 | /* |
e49f1e20 WA |
38 | * SPA: Storage Pool Allocator |
39 | * | |
34dc7c2f BB |
40 | * This file contains all the routines used when modifying on-disk SPA state. |
41 | * This includes opening, importing, destroying, exporting a pool, and syncing a | |
42 | * pool. | |
43 | */ | |
44 | ||
45 | #include <sys/zfs_context.h> | |
46 | #include <sys/fm/fs/zfs.h> | |
47 | #include <sys/spa_impl.h> | |
48 | #include <sys/zio.h> | |
49 | #include <sys/zio_checksum.h> | |
34dc7c2f BB |
50 | #include <sys/dmu.h> |
51 | #include <sys/dmu_tx.h> | |
52 | #include <sys/zap.h> | |
53 | #include <sys/zil.h> | |
428870ff | 54 | #include <sys/ddt.h> |
34dc7c2f | 55 | #include <sys/vdev_impl.h> |
a1d477c2 MA |
56 | #include <sys/vdev_removal.h> |
57 | #include <sys/vdev_indirect_mapping.h> | |
58 | #include <sys/vdev_indirect_births.h> | |
619f0976 | 59 | #include <sys/vdev_initialize.h> |
1b939560 | 60 | #include <sys/vdev_trim.h> |
c28b2279 | 61 | #include <sys/vdev_disk.h> |
34dc7c2f | 62 | #include <sys/metaslab.h> |
428870ff | 63 | #include <sys/metaslab_impl.h> |
379ca9cf | 64 | #include <sys/mmp.h> |
34dc7c2f BB |
65 | #include <sys/uberblock_impl.h> |
66 | #include <sys/txg.h> | |
67 | #include <sys/avl.h> | |
a1d477c2 | 68 | #include <sys/bpobj.h> |
34dc7c2f BB |
69 | #include <sys/dmu_traverse.h> |
70 | #include <sys/dmu_objset.h> | |
71 | #include <sys/unique.h> | |
72 | #include <sys/dsl_pool.h> | |
73 | #include <sys/dsl_dataset.h> | |
74 | #include <sys/dsl_dir.h> | |
75 | #include <sys/dsl_prop.h> | |
76 | #include <sys/dsl_synctask.h> | |
77 | #include <sys/fs/zfs.h> | |
78 | #include <sys/arc.h> | |
79 | #include <sys/callb.h> | |
80 | #include <sys/systeminfo.h> | |
34dc7c2f | 81 | #include <sys/spa_boot.h> |
9babb374 | 82 | #include <sys/zfs_ioctl.h> |
428870ff | 83 | #include <sys/dsl_scan.h> |
9ae529ec | 84 | #include <sys/zfeature.h> |
13fe0198 | 85 | #include <sys/dsl_destroy.h> |
526af785 | 86 | #include <sys/zvol.h> |
34dc7c2f | 87 | |
d164b209 | 88 | #ifdef _KERNEL |
12fa0466 DE |
89 | #include <sys/fm/protocol.h> |
90 | #include <sys/fm/util.h> | |
428870ff | 91 | #include <sys/callb.h> |
d164b209 | 92 | #include <sys/zone.h> |
c8242a96 | 93 | #include <sys/vmsystm.h> |
d164b209 BB |
94 | #endif /* _KERNEL */ |
95 | ||
34dc7c2f BB |
96 | #include "zfs_prop.h" |
97 | #include "zfs_comutil.h" | |
98 | ||
e6cfd633 WA |
99 | /* |
100 | * The interval, in seconds, at which failed configuration cache file writes | |
101 | * should be retried. | |
102 | */ | |
a1d477c2 | 103 | int zfs_ccw_retry_interval = 300; |
e6cfd633 | 104 | |
428870ff | 105 | typedef enum zti_modes { |
7ef5e54e | 106 | ZTI_MODE_FIXED, /* value is # of threads (min 1) */ |
7ef5e54e AL |
107 | ZTI_MODE_BATCH, /* cpu-intensive; value is ignored */ |
108 | ZTI_MODE_NULL, /* don't create a taskq */ | |
109 | ZTI_NMODES | |
428870ff | 110 | } zti_modes_t; |
34dc7c2f | 111 | |
7ef5e54e AL |
112 | #define ZTI_P(n, q) { ZTI_MODE_FIXED, (n), (q) } |
113 | #define ZTI_PCT(n) { ZTI_MODE_ONLINE_PERCENT, (n), 1 } | |
114 | #define ZTI_BATCH { ZTI_MODE_BATCH, 0, 1 } | |
115 | #define ZTI_NULL { ZTI_MODE_NULL, 0, 0 } | |
9babb374 | 116 | |
7ef5e54e AL |
117 | #define ZTI_N(n) ZTI_P(n, 1) |
118 | #define ZTI_ONE ZTI_N(1) | |
9babb374 BB |
119 | |
120 | typedef struct zio_taskq_info { | |
7ef5e54e | 121 | zti_modes_t zti_mode; |
428870ff | 122 | uint_t zti_value; |
7ef5e54e | 123 | uint_t zti_count; |
9babb374 BB |
124 | } zio_taskq_info_t; |
125 | ||
126 | static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = { | |
451041db | 127 | "iss", "iss_h", "int", "int_h" |
9babb374 BB |
128 | }; |
129 | ||
428870ff | 130 | /* |
7ef5e54e AL |
131 | * This table defines the taskq settings for each ZFS I/O type. When |
132 | * initializing a pool, we use this table to create an appropriately sized | |
133 | * taskq. Some operations are low volume and therefore have a small, static | |
134 | * number of threads assigned to their taskqs using the ZTI_N(#) or ZTI_ONE | |
135 | * macros. Other operations process a large amount of data; the ZTI_BATCH | |
136 | * macro causes us to create a taskq oriented for throughput. Some operations | |
1b939560 | 137 | * are so high frequency and short-lived that the taskq itself can become a |
7ef5e54e AL |
138 | * point of lock contention. The ZTI_P(#, #) macro indicates that we need an |
139 | * additional degree of parallelism specified by the number of threads per- | |
140 | * taskq and the number of taskqs; when dispatching an event in this case, the | |
141 | * particular taskq is chosen at random. | |
142 | * | |
143 | * The different taskq priorities are to handle the different contexts (issue | |
144 | * and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that | |
145 | * need to be handled with minimum delay. | |
428870ff BB |
146 | */ |
147 | const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = { | |
148 | /* ISSUE ISSUE_HIGH INTR INTR_HIGH */ | |
7ef5e54e | 149 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */ |
aa9af22c BB |
150 | { ZTI_N(8), ZTI_NULL, ZTI_P(12, 8), ZTI_NULL }, /* READ */ |
151 | { ZTI_BATCH, ZTI_N(5), ZTI_P(12, 8), ZTI_N(5) }, /* WRITE */ | |
152 | { ZTI_P(12, 8), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* FREE */ | |
7ef5e54e AL |
153 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* CLAIM */ |
154 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* IOCTL */ | |
1b939560 | 155 | { ZTI_N(4), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* TRIM */ |
9babb374 BB |
156 | }; |
157 | ||
13fe0198 MA |
158 | static void spa_sync_version(void *arg, dmu_tx_t *tx); |
159 | static void spa_sync_props(void *arg, dmu_tx_t *tx); | |
b128c09f | 160 | static boolean_t spa_has_active_shared_spare(spa_t *spa); |
d2734cce | 161 | static int spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport); |
572e2857 | 162 | static void spa_vdev_resilver_done(spa_t *spa); |
428870ff | 163 | |
e8b96c60 | 164 | uint_t zio_taskq_batch_pct = 75; /* 1 thread per cpu in pset */ |
428870ff BB |
165 | boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */ |
166 | uint_t zio_taskq_basedc = 80; /* base duty cycle */ | |
167 | ||
168 | boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ | |
169 | ||
afd2f7b7 PZ |
170 | /* |
171 | * Report any spa_load_verify errors found, but do not fail spa_load. | |
172 | * This is used by zdb to analyze non-idle pools. | |
173 | */ | |
174 | boolean_t spa_load_verify_dryrun = B_FALSE; | |
175 | ||
428870ff BB |
176 | /* |
177 | * This (illegal) pool name is used when temporarily importing a spa_t in order | |
178 | * to get the vdev stats associated with the imported devices. | |
179 | */ | |
180 | #define TRYIMPORT_NAME "$import" | |
34dc7c2f | 181 | |
6cb8e530 PZ |
182 | /* |
183 | * For debugging purposes: print out vdev tree during pool import. | |
184 | */ | |
185 | int spa_load_print_vdev_tree = B_FALSE; | |
186 | ||
187 | /* | |
188 | * A non-zero value for zfs_max_missing_tvds means that we allow importing | |
189 | * pools with missing top-level vdevs. This is strictly intended for advanced | |
190 | * pool recovery cases since missing data is almost inevitable. Pools with | |
191 | * missing devices can only be imported read-only for safety reasons, and their | |
192 | * fail-mode will be automatically set to "continue". | |
193 | * | |
194 | * With 1 missing vdev we should be able to import the pool and mount all | |
195 | * datasets. User data that was not modified after the missing device has been | |
196 | * added should be recoverable. This means that snapshots created prior to the | |
197 | * addition of that device should be completely intact. | |
198 | * | |
199 | * With 2 missing vdevs, some datasets may fail to mount since there are | |
200 | * dataset statistics that are stored as regular metadata. Some data might be | |
201 | * recoverable if those vdevs were added recently. | |
202 | * | |
203 | * With 3 or more missing vdevs, the pool is severely damaged and MOS entries | |
204 | * may be missing entirely. Chances of data recovery are very low. Note that | |
205 | * there are also risks of performing an inadvertent rewind as we might be | |
206 | * missing all the vdevs with the latest uberblocks. | |
207 | */ | |
208 | unsigned long zfs_max_missing_tvds = 0; | |
209 | ||
210 | /* | |
211 | * The parameters below are similar to zfs_max_missing_tvds but are only | |
212 | * intended for a preliminary open of the pool with an untrusted config which | |
213 | * might be incomplete or out-dated. | |
214 | * | |
215 | * We are more tolerant for pools opened from a cachefile since we could have | |
216 | * an out-dated cachefile where a device removal was not registered. | |
217 | * We could have set the limit arbitrarily high but in the case where devices | |
218 | * are really missing we would want to return the proper error codes; we chose | |
219 | * SPA_DVAS_PER_BP - 1 so that some copies of the MOS would still be available | |
220 | * and we get a chance to retrieve the trusted config. | |
221 | */ | |
222 | uint64_t zfs_max_missing_tvds_cachefile = SPA_DVAS_PER_BP - 1; | |
d2734cce | 223 | |
6cb8e530 PZ |
224 | /* |
225 | * In the case where config was assembled by scanning device paths (/dev/dsks | |
226 | * by default) we are less tolerant since all the existing devices should have | |
227 | * been detected and we want spa_load to return the right error codes. | |
228 | */ | |
229 | uint64_t zfs_max_missing_tvds_scan = 0; | |
230 | ||
d2734cce SD |
231 | /* |
232 | * Debugging aid that pauses spa_sync() towards the end. | |
233 | */ | |
234 | boolean_t zfs_pause_spa_sync = B_FALSE; | |
235 | ||
37f03da8 SH |
236 | /* |
237 | * Variables to indicate the livelist condense zthr func should wait at certain | |
238 | * points for the livelist to be removed - used to test condense/destroy races | |
239 | */ | |
240 | int zfs_livelist_condense_zthr_pause = 0; | |
241 | int zfs_livelist_condense_sync_pause = 0; | |
242 | ||
243 | /* | |
244 | * Variables to track whether or not condense cancellation has been | |
245 | * triggered in testing. | |
246 | */ | |
247 | int zfs_livelist_condense_sync_cancel = 0; | |
248 | int zfs_livelist_condense_zthr_cancel = 0; | |
249 | ||
250 | /* | |
251 | * Variable to track whether or not extra ALLOC blkptrs were added to a | |
252 | * livelist entry while it was being condensed (caused by the way we track | |
253 | * remapped blkptrs in dbuf_remap_impl) | |
254 | */ | |
255 | int zfs_livelist_condense_new_alloc = 0; | |
256 | ||
34dc7c2f BB |
257 | /* |
258 | * ========================================================================== | |
259 | * SPA properties routines | |
260 | * ========================================================================== | |
261 | */ | |
262 | ||
263 | /* | |
264 | * Add a (source=src, propname=propval) list to an nvlist. | |
265 | */ | |
266 | static void | |
267 | spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, | |
268 | uint64_t intval, zprop_source_t src) | |
269 | { | |
270 | const char *propname = zpool_prop_to_name(prop); | |
271 | nvlist_t *propval; | |
272 | ||
79c76d5b | 273 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
274 | VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); |
275 | ||
276 | if (strval != NULL) | |
277 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); | |
278 | else | |
279 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); | |
280 | ||
281 | VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); | |
282 | nvlist_free(propval); | |
283 | } | |
284 | ||
285 | /* | |
286 | * Get property values from the spa configuration. | |
287 | */ | |
288 | static void | |
289 | spa_prop_get_config(spa_t *spa, nvlist_t **nvp) | |
290 | { | |
1bd201e7 | 291 | vdev_t *rvd = spa->spa_root_vdev; |
9ae529ec | 292 | dsl_pool_t *pool = spa->spa_dsl_pool; |
f3a7f661 | 293 | uint64_t size, alloc, cap, version; |
82ab6848 | 294 | const zprop_source_t src = ZPROP_SRC_NONE; |
b128c09f | 295 | spa_config_dirent_t *dp; |
f3a7f661 | 296 | metaslab_class_t *mc = spa_normal_class(spa); |
b128c09f BB |
297 | |
298 | ASSERT(MUTEX_HELD(&spa->spa_props_lock)); | |
34dc7c2f | 299 | |
1bd201e7 | 300 | if (rvd != NULL) { |
cc99f275 DB |
301 | alloc = metaslab_class_get_alloc(mc); |
302 | alloc += metaslab_class_get_alloc(spa_special_class(spa)); | |
303 | alloc += metaslab_class_get_alloc(spa_dedup_class(spa)); | |
304 | ||
305 | size = metaslab_class_get_space(mc); | |
306 | size += metaslab_class_get_space(spa_special_class(spa)); | |
307 | size += metaslab_class_get_space(spa_dedup_class(spa)); | |
308 | ||
d164b209 BB |
309 | spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); |
310 | spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); | |
428870ff BB |
311 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src); |
312 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL, | |
313 | size - alloc, src); | |
d2734cce SD |
314 | spa_prop_add_list(*nvp, ZPOOL_PROP_CHECKPOINT, NULL, |
315 | spa->spa_checkpoint_info.sci_dspace, src); | |
1bd201e7 | 316 | |
f3a7f661 GW |
317 | spa_prop_add_list(*nvp, ZPOOL_PROP_FRAGMENTATION, NULL, |
318 | metaslab_class_fragmentation(mc), src); | |
319 | spa_prop_add_list(*nvp, ZPOOL_PROP_EXPANDSZ, NULL, | |
320 | metaslab_class_expandable_space(mc), src); | |
572e2857 BB |
321 | spa_prop_add_list(*nvp, ZPOOL_PROP_READONLY, NULL, |
322 | (spa_mode(spa) == FREAD), src); | |
d164b209 | 323 | |
428870ff | 324 | cap = (size == 0) ? 0 : (alloc * 100 / size); |
d164b209 BB |
325 | spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); |
326 | ||
428870ff BB |
327 | spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL, |
328 | ddt_get_pool_dedup_ratio(spa), src); | |
329 | ||
d164b209 | 330 | spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, |
1bd201e7 | 331 | rvd->vdev_state, src); |
d164b209 BB |
332 | |
333 | version = spa_version(spa); | |
82ab6848 HM |
334 | if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) { |
335 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, | |
336 | version, ZPROP_SRC_DEFAULT); | |
337 | } else { | |
338 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, | |
339 | version, ZPROP_SRC_LOCAL); | |
340 | } | |
a448a255 SD |
341 | spa_prop_add_list(*nvp, ZPOOL_PROP_LOAD_GUID, |
342 | NULL, spa_load_guid(spa), src); | |
d164b209 | 343 | } |
34dc7c2f | 344 | |
9ae529ec | 345 | if (pool != NULL) { |
9ae529ec CS |
346 | /* |
347 | * The $FREE directory was introduced in SPA_VERSION_DEADLISTS, | |
348 | * when opening pools before this version freedir will be NULL. | |
349 | */ | |
fbeddd60 | 350 | if (pool->dp_free_dir != NULL) { |
9ae529ec | 351 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, NULL, |
d683ddbb JG |
352 | dsl_dir_phys(pool->dp_free_dir)->dd_used_bytes, |
353 | src); | |
9ae529ec CS |
354 | } else { |
355 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, | |
356 | NULL, 0, src); | |
357 | } | |
fbeddd60 MA |
358 | |
359 | if (pool->dp_leak_dir != NULL) { | |
360 | spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, NULL, | |
d683ddbb JG |
361 | dsl_dir_phys(pool->dp_leak_dir)->dd_used_bytes, |
362 | src); | |
fbeddd60 MA |
363 | } else { |
364 | spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, | |
365 | NULL, 0, src); | |
366 | } | |
9ae529ec CS |
367 | } |
368 | ||
34dc7c2f | 369 | spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); |
34dc7c2f | 370 | |
d96eb2b1 DM |
371 | if (spa->spa_comment != NULL) { |
372 | spa_prop_add_list(*nvp, ZPOOL_PROP_COMMENT, spa->spa_comment, | |
373 | 0, ZPROP_SRC_LOCAL); | |
374 | } | |
375 | ||
34dc7c2f BB |
376 | if (spa->spa_root != NULL) |
377 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, | |
378 | 0, ZPROP_SRC_LOCAL); | |
379 | ||
f1512ee6 MA |
380 | if (spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_BLOCKS)) { |
381 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXBLOCKSIZE, NULL, | |
382 | MIN(zfs_max_recordsize, SPA_MAXBLOCKSIZE), ZPROP_SRC_NONE); | |
383 | } else { | |
384 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXBLOCKSIZE, NULL, | |
385 | SPA_OLD_MAXBLOCKSIZE, ZPROP_SRC_NONE); | |
386 | } | |
387 | ||
50c957f7 NB |
388 | if (spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_DNODE)) { |
389 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXDNODESIZE, NULL, | |
390 | DNODE_MAX_SIZE, ZPROP_SRC_NONE); | |
391 | } else { | |
392 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXDNODESIZE, NULL, | |
393 | DNODE_MIN_SIZE, ZPROP_SRC_NONE); | |
394 | } | |
395 | ||
b128c09f BB |
396 | if ((dp = list_head(&spa->spa_config_list)) != NULL) { |
397 | if (dp->scd_path == NULL) { | |
34dc7c2f | 398 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f BB |
399 | "none", 0, ZPROP_SRC_LOCAL); |
400 | } else if (strcmp(dp->scd_path, spa_config_path) != 0) { | |
34dc7c2f | 401 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f | 402 | dp->scd_path, 0, ZPROP_SRC_LOCAL); |
34dc7c2f BB |
403 | } |
404 | } | |
405 | } | |
406 | ||
407 | /* | |
408 | * Get zpool property values. | |
409 | */ | |
410 | int | |
411 | spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
412 | { | |
428870ff | 413 | objset_t *mos = spa->spa_meta_objset; |
34dc7c2f BB |
414 | zap_cursor_t zc; |
415 | zap_attribute_t za; | |
34dc7c2f BB |
416 | int err; |
417 | ||
79c76d5b | 418 | err = nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP); |
c28b2279 | 419 | if (err) |
d1d7e268 | 420 | return (err); |
34dc7c2f | 421 | |
b128c09f BB |
422 | mutex_enter(&spa->spa_props_lock); |
423 | ||
34dc7c2f BB |
424 | /* |
425 | * Get properties from the spa config. | |
426 | */ | |
427 | spa_prop_get_config(spa, nvp); | |
428 | ||
34dc7c2f | 429 | /* If no pool property object, no more prop to get. */ |
428870ff | 430 | if (mos == NULL || spa->spa_pool_props_object == 0) { |
34dc7c2f | 431 | mutex_exit(&spa->spa_props_lock); |
c28b2279 | 432 | goto out; |
34dc7c2f BB |
433 | } |
434 | ||
435 | /* | |
436 | * Get properties from the MOS pool property object. | |
437 | */ | |
438 | for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
439 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
440 | zap_cursor_advance(&zc)) { | |
441 | uint64_t intval = 0; | |
442 | char *strval = NULL; | |
443 | zprop_source_t src = ZPROP_SRC_DEFAULT; | |
444 | zpool_prop_t prop; | |
445 | ||
31864e3d | 446 | if ((prop = zpool_name_to_prop(za.za_name)) == ZPOOL_PROP_INVAL) |
34dc7c2f BB |
447 | continue; |
448 | ||
449 | switch (za.za_integer_length) { | |
450 | case 8: | |
451 | /* integer property */ | |
452 | if (za.za_first_integer != | |
453 | zpool_prop_default_numeric(prop)) | |
454 | src = ZPROP_SRC_LOCAL; | |
455 | ||
456 | if (prop == ZPOOL_PROP_BOOTFS) { | |
457 | dsl_pool_t *dp; | |
458 | dsl_dataset_t *ds = NULL; | |
459 | ||
460 | dp = spa_get_dsl(spa); | |
13fe0198 | 461 | dsl_pool_config_enter(dp, FTAG); |
619f0976 GW |
462 | err = dsl_dataset_hold_obj(dp, |
463 | za.za_first_integer, FTAG, &ds); | |
464 | if (err != 0) { | |
13fe0198 | 465 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f BB |
466 | break; |
467 | } | |
468 | ||
eca7b760 | 469 | strval = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, |
79c76d5b | 470 | KM_SLEEP); |
34dc7c2f | 471 | dsl_dataset_name(ds, strval); |
b128c09f | 472 | dsl_dataset_rele(ds, FTAG); |
13fe0198 | 473 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f BB |
474 | } else { |
475 | strval = NULL; | |
476 | intval = za.za_first_integer; | |
477 | } | |
478 | ||
479 | spa_prop_add_list(*nvp, prop, strval, intval, src); | |
480 | ||
481 | if (strval != NULL) | |
eca7b760 | 482 | kmem_free(strval, ZFS_MAX_DATASET_NAME_LEN); |
34dc7c2f BB |
483 | |
484 | break; | |
485 | ||
486 | case 1: | |
487 | /* string property */ | |
79c76d5b | 488 | strval = kmem_alloc(za.za_num_integers, KM_SLEEP); |
34dc7c2f BB |
489 | err = zap_lookup(mos, spa->spa_pool_props_object, |
490 | za.za_name, 1, za.za_num_integers, strval); | |
491 | if (err) { | |
492 | kmem_free(strval, za.za_num_integers); | |
493 | break; | |
494 | } | |
495 | spa_prop_add_list(*nvp, prop, strval, 0, src); | |
496 | kmem_free(strval, za.za_num_integers); | |
497 | break; | |
498 | ||
499 | default: | |
500 | break; | |
501 | } | |
502 | } | |
503 | zap_cursor_fini(&zc); | |
504 | mutex_exit(&spa->spa_props_lock); | |
505 | out: | |
506 | if (err && err != ENOENT) { | |
507 | nvlist_free(*nvp); | |
508 | *nvp = NULL; | |
509 | return (err); | |
510 | } | |
511 | ||
512 | return (0); | |
513 | } | |
514 | ||
515 | /* | |
516 | * Validate the given pool properties nvlist and modify the list | |
517 | * for the property values to be set. | |
518 | */ | |
519 | static int | |
520 | spa_prop_validate(spa_t *spa, nvlist_t *props) | |
521 | { | |
522 | nvpair_t *elem; | |
523 | int error = 0, reset_bootfs = 0; | |
d4ed6673 | 524 | uint64_t objnum = 0; |
9ae529ec | 525 | boolean_t has_feature = B_FALSE; |
34dc7c2f BB |
526 | |
527 | elem = NULL; | |
528 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
34dc7c2f | 529 | uint64_t intval; |
9ae529ec CS |
530 | char *strval, *slash, *check, *fname; |
531 | const char *propname = nvpair_name(elem); | |
532 | zpool_prop_t prop = zpool_name_to_prop(propname); | |
533 | ||
31864e3d BB |
534 | switch (prop) { |
535 | case ZPOOL_PROP_INVAL: | |
9ae529ec | 536 | if (!zpool_prop_feature(propname)) { |
2e528b49 | 537 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
538 | break; |
539 | } | |
540 | ||
541 | /* | |
542 | * Sanitize the input. | |
543 | */ | |
544 | if (nvpair_type(elem) != DATA_TYPE_UINT64) { | |
2e528b49 | 545 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
546 | break; |
547 | } | |
548 | ||
549 | if (nvpair_value_uint64(elem, &intval) != 0) { | |
2e528b49 | 550 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
551 | break; |
552 | } | |
34dc7c2f | 553 | |
9ae529ec | 554 | if (intval != 0) { |
2e528b49 | 555 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
556 | break; |
557 | } | |
34dc7c2f | 558 | |
9ae529ec CS |
559 | fname = strchr(propname, '@') + 1; |
560 | if (zfeature_lookup_name(fname, NULL) != 0) { | |
2e528b49 | 561 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
562 | break; |
563 | } | |
564 | ||
565 | has_feature = B_TRUE; | |
566 | break; | |
34dc7c2f | 567 | |
34dc7c2f BB |
568 | case ZPOOL_PROP_VERSION: |
569 | error = nvpair_value_uint64(elem, &intval); | |
570 | if (!error && | |
9ae529ec CS |
571 | (intval < spa_version(spa) || |
572 | intval > SPA_VERSION_BEFORE_FEATURES || | |
573 | has_feature)) | |
2e528b49 | 574 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
575 | break; |
576 | ||
577 | case ZPOOL_PROP_DELEGATION: | |
578 | case ZPOOL_PROP_AUTOREPLACE: | |
b128c09f | 579 | case ZPOOL_PROP_LISTSNAPS: |
9babb374 | 580 | case ZPOOL_PROP_AUTOEXPAND: |
1b939560 | 581 | case ZPOOL_PROP_AUTOTRIM: |
34dc7c2f BB |
582 | error = nvpair_value_uint64(elem, &intval); |
583 | if (!error && intval > 1) | |
2e528b49 | 584 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
585 | break; |
586 | ||
379ca9cf OF |
587 | case ZPOOL_PROP_MULTIHOST: |
588 | error = nvpair_value_uint64(elem, &intval); | |
589 | if (!error && intval > 1) | |
590 | error = SET_ERROR(EINVAL); | |
591 | ||
25f06d67 BB |
592 | if (!error) { |
593 | uint32_t hostid = zone_get_hostid(NULL); | |
594 | if (hostid) | |
595 | spa->spa_hostid = hostid; | |
596 | else | |
597 | error = SET_ERROR(ENOTSUP); | |
598 | } | |
379ca9cf OF |
599 | |
600 | break; | |
601 | ||
34dc7c2f | 602 | case ZPOOL_PROP_BOOTFS: |
9babb374 BB |
603 | /* |
604 | * If the pool version is less than SPA_VERSION_BOOTFS, | |
605 | * or the pool is still being created (version == 0), | |
606 | * the bootfs property cannot be set. | |
607 | */ | |
34dc7c2f | 608 | if (spa_version(spa) < SPA_VERSION_BOOTFS) { |
2e528b49 | 609 | error = SET_ERROR(ENOTSUP); |
34dc7c2f BB |
610 | break; |
611 | } | |
612 | ||
613 | /* | |
b128c09f | 614 | * Make sure the vdev config is bootable |
34dc7c2f | 615 | */ |
b128c09f | 616 | if (!vdev_is_bootable(spa->spa_root_vdev)) { |
2e528b49 | 617 | error = SET_ERROR(ENOTSUP); |
34dc7c2f BB |
618 | break; |
619 | } | |
620 | ||
621 | reset_bootfs = 1; | |
622 | ||
623 | error = nvpair_value_string(elem, &strval); | |
624 | ||
625 | if (!error) { | |
9ae529ec | 626 | objset_t *os; |
f1512ee6 | 627 | uint64_t propval; |
b128c09f | 628 | |
34dc7c2f BB |
629 | if (strval == NULL || strval[0] == '\0') { |
630 | objnum = zpool_prop_default_numeric( | |
631 | ZPOOL_PROP_BOOTFS); | |
632 | break; | |
633 | } | |
634 | ||
d1d7e268 | 635 | error = dmu_objset_hold(strval, FTAG, &os); |
619f0976 | 636 | if (error != 0) |
34dc7c2f | 637 | break; |
b128c09f | 638 | |
f1512ee6 MA |
639 | /* |
640 | * Must be ZPL, and its property settings | |
641 | * must be supported by GRUB (compression | |
fcf21f8f RL |
642 | * is not gzip, and large dnodes are not |
643 | * used). | |
f1512ee6 | 644 | */ |
428870ff BB |
645 | |
646 | if (dmu_objset_type(os) != DMU_OST_ZFS) { | |
2e528b49 | 647 | error = SET_ERROR(ENOTSUP); |
13fe0198 MA |
648 | } else if ((error = |
649 | dsl_prop_get_int_ds(dmu_objset_ds(os), | |
b128c09f | 650 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), |
f1512ee6 MA |
651 | &propval)) == 0 && |
652 | !BOOTFS_COMPRESS_VALID(propval)) { | |
653 | error = SET_ERROR(ENOTSUP); | |
50c957f7 NB |
654 | } else if ((error = |
655 | dsl_prop_get_int_ds(dmu_objset_ds(os), | |
656 | zfs_prop_to_name(ZFS_PROP_DNODESIZE), | |
657 | &propval)) == 0 && | |
658 | propval != ZFS_DNSIZE_LEGACY) { | |
659 | error = SET_ERROR(ENOTSUP); | |
b128c09f BB |
660 | } else { |
661 | objnum = dmu_objset_id(os); | |
662 | } | |
428870ff | 663 | dmu_objset_rele(os, FTAG); |
34dc7c2f BB |
664 | } |
665 | break; | |
b128c09f | 666 | |
34dc7c2f BB |
667 | case ZPOOL_PROP_FAILUREMODE: |
668 | error = nvpair_value_uint64(elem, &intval); | |
3bfd95d5 | 669 | if (!error && intval > ZIO_FAILURE_MODE_PANIC) |
2e528b49 | 670 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
671 | |
672 | /* | |
673 | * This is a special case which only occurs when | |
674 | * the pool has completely failed. This allows | |
675 | * the user to change the in-core failmode property | |
676 | * without syncing it out to disk (I/Os might | |
677 | * currently be blocked). We do this by returning | |
678 | * EIO to the caller (spa_prop_set) to trick it | |
679 | * into thinking we encountered a property validation | |
680 | * error. | |
681 | */ | |
b128c09f | 682 | if (!error && spa_suspended(spa)) { |
34dc7c2f | 683 | spa->spa_failmode = intval; |
2e528b49 | 684 | error = SET_ERROR(EIO); |
34dc7c2f BB |
685 | } |
686 | break; | |
687 | ||
688 | case ZPOOL_PROP_CACHEFILE: | |
689 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
690 | break; | |
691 | ||
692 | if (strval[0] == '\0') | |
693 | break; | |
694 | ||
695 | if (strcmp(strval, "none") == 0) | |
696 | break; | |
697 | ||
698 | if (strval[0] != '/') { | |
2e528b49 | 699 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
700 | break; |
701 | } | |
702 | ||
703 | slash = strrchr(strval, '/'); | |
704 | ASSERT(slash != NULL); | |
705 | ||
706 | if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
707 | strcmp(slash, "/..") == 0) | |
2e528b49 | 708 | error = SET_ERROR(EINVAL); |
34dc7c2f | 709 | break; |
428870ff | 710 | |
d96eb2b1 DM |
711 | case ZPOOL_PROP_COMMENT: |
712 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
713 | break; | |
714 | for (check = strval; *check != '\0'; check++) { | |
715 | if (!isprint(*check)) { | |
2e528b49 | 716 | error = SET_ERROR(EINVAL); |
d96eb2b1 DM |
717 | break; |
718 | } | |
d96eb2b1 DM |
719 | } |
720 | if (strlen(strval) > ZPROP_MAX_COMMENT) | |
2e528b49 | 721 | error = SET_ERROR(E2BIG); |
d96eb2b1 DM |
722 | break; |
723 | ||
e75c13c3 BB |
724 | default: |
725 | break; | |
34dc7c2f BB |
726 | } |
727 | ||
728 | if (error) | |
729 | break; | |
730 | } | |
731 | ||
050d720c MA |
732 | (void) nvlist_remove_all(props, |
733 | zpool_prop_to_name(ZPOOL_PROP_DEDUPDITTO)); | |
734 | ||
34dc7c2f BB |
735 | if (!error && reset_bootfs) { |
736 | error = nvlist_remove(props, | |
737 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
738 | ||
739 | if (!error) { | |
740 | error = nvlist_add_uint64(props, | |
741 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
742 | } | |
743 | } | |
744 | ||
745 | return (error); | |
746 | } | |
747 | ||
d164b209 BB |
748 | void |
749 | spa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync) | |
750 | { | |
751 | char *cachefile; | |
752 | spa_config_dirent_t *dp; | |
753 | ||
754 | if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), | |
755 | &cachefile) != 0) | |
756 | return; | |
757 | ||
758 | dp = kmem_alloc(sizeof (spa_config_dirent_t), | |
79c76d5b | 759 | KM_SLEEP); |
d164b209 BB |
760 | |
761 | if (cachefile[0] == '\0') | |
762 | dp->scd_path = spa_strdup(spa_config_path); | |
763 | else if (strcmp(cachefile, "none") == 0) | |
764 | dp->scd_path = NULL; | |
765 | else | |
766 | dp->scd_path = spa_strdup(cachefile); | |
767 | ||
768 | list_insert_head(&spa->spa_config_list, dp); | |
769 | if (need_sync) | |
770 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
771 | } | |
772 | ||
34dc7c2f BB |
773 | int |
774 | spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
775 | { | |
776 | int error; | |
9ae529ec | 777 | nvpair_t *elem = NULL; |
d164b209 | 778 | boolean_t need_sync = B_FALSE; |
34dc7c2f BB |
779 | |
780 | if ((error = spa_prop_validate(spa, nvp)) != 0) | |
781 | return (error); | |
782 | ||
d164b209 | 783 | while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) { |
9ae529ec | 784 | zpool_prop_t prop = zpool_name_to_prop(nvpair_name(elem)); |
d164b209 | 785 | |
572e2857 BB |
786 | if (prop == ZPOOL_PROP_CACHEFILE || |
787 | prop == ZPOOL_PROP_ALTROOT || | |
788 | prop == ZPOOL_PROP_READONLY) | |
d164b209 BB |
789 | continue; |
790 | ||
31864e3d | 791 | if (prop == ZPOOL_PROP_VERSION || prop == ZPOOL_PROP_INVAL) { |
9ae529ec CS |
792 | uint64_t ver; |
793 | ||
794 | if (prop == ZPOOL_PROP_VERSION) { | |
795 | VERIFY(nvpair_value_uint64(elem, &ver) == 0); | |
796 | } else { | |
797 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
798 | ver = SPA_VERSION_FEATURES; | |
799 | need_sync = B_TRUE; | |
800 | } | |
801 | ||
802 | /* Save time if the version is already set. */ | |
803 | if (ver == spa_version(spa)) | |
804 | continue; | |
805 | ||
806 | /* | |
807 | * In addition to the pool directory object, we might | |
808 | * create the pool properties object, the features for | |
809 | * read object, the features for write object, or the | |
810 | * feature descriptions object. | |
811 | */ | |
13fe0198 | 812 | error = dsl_sync_task(spa->spa_name, NULL, |
3d45fdd6 MA |
813 | spa_sync_version, &ver, |
814 | 6, ZFS_SPACE_CHECK_RESERVED); | |
9ae529ec CS |
815 | if (error) |
816 | return (error); | |
817 | continue; | |
818 | } | |
819 | ||
d164b209 BB |
820 | need_sync = B_TRUE; |
821 | break; | |
822 | } | |
823 | ||
9ae529ec | 824 | if (need_sync) { |
13fe0198 | 825 | return (dsl_sync_task(spa->spa_name, NULL, spa_sync_props, |
3d45fdd6 | 826 | nvp, 6, ZFS_SPACE_CHECK_RESERVED)); |
9ae529ec CS |
827 | } |
828 | ||
829 | return (0); | |
34dc7c2f BB |
830 | } |
831 | ||
832 | /* | |
833 | * If the bootfs property value is dsobj, clear it. | |
834 | */ | |
835 | void | |
836 | spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
837 | { | |
838 | if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
839 | VERIFY(zap_remove(spa->spa_meta_objset, | |
840 | spa->spa_pool_props_object, | |
841 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
842 | spa->spa_bootfs = 0; | |
843 | } | |
844 | } | |
845 | ||
3bc7e0fb GW |
846 | /*ARGSUSED*/ |
847 | static int | |
13fe0198 | 848 | spa_change_guid_check(void *arg, dmu_tx_t *tx) |
3bc7e0fb | 849 | { |
1c27024e | 850 | ASSERTV(uint64_t *newguid = arg); |
13fe0198 | 851 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; |
3bc7e0fb GW |
852 | vdev_t *rvd = spa->spa_root_vdev; |
853 | uint64_t vdev_state; | |
3bc7e0fb | 854 | |
d2734cce SD |
855 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { |
856 | int error = (spa_has_checkpoint(spa)) ? | |
857 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
858 | return (SET_ERROR(error)); | |
859 | } | |
860 | ||
3bc7e0fb GW |
861 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
862 | vdev_state = rvd->vdev_state; | |
863 | spa_config_exit(spa, SCL_STATE, FTAG); | |
864 | ||
865 | if (vdev_state != VDEV_STATE_HEALTHY) | |
2e528b49 | 866 | return (SET_ERROR(ENXIO)); |
3bc7e0fb GW |
867 | |
868 | ASSERT3U(spa_guid(spa), !=, *newguid); | |
869 | ||
870 | return (0); | |
871 | } | |
872 | ||
873 | static void | |
13fe0198 | 874 | spa_change_guid_sync(void *arg, dmu_tx_t *tx) |
3bc7e0fb | 875 | { |
13fe0198 MA |
876 | uint64_t *newguid = arg; |
877 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
3bc7e0fb GW |
878 | uint64_t oldguid; |
879 | vdev_t *rvd = spa->spa_root_vdev; | |
880 | ||
881 | oldguid = spa_guid(spa); | |
882 | ||
883 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
884 | rvd->vdev_guid = *newguid; | |
885 | rvd->vdev_guid_sum += (*newguid - oldguid); | |
886 | vdev_config_dirty(rvd); | |
887 | spa_config_exit(spa, SCL_STATE, FTAG); | |
888 | ||
6f1ffb06 | 889 | spa_history_log_internal(spa, "guid change", tx, "old=%llu new=%llu", |
74756182 | 890 | (u_longlong_t)oldguid, (u_longlong_t)*newguid); |
3bc7e0fb GW |
891 | } |
892 | ||
3541dc6d GA |
893 | /* |
894 | * Change the GUID for the pool. This is done so that we can later | |
895 | * re-import a pool built from a clone of our own vdevs. We will modify | |
896 | * the root vdev's guid, our own pool guid, and then mark all of our | |
897 | * vdevs dirty. Note that we must make sure that all our vdevs are | |
898 | * online when we do this, or else any vdevs that weren't present | |
899 | * would be orphaned from our pool. We are also going to issue a | |
900 | * sysevent to update any watchers. | |
901 | */ | |
902 | int | |
903 | spa_change_guid(spa_t *spa) | |
904 | { | |
3bc7e0fb GW |
905 | int error; |
906 | uint64_t guid; | |
3541dc6d | 907 | |
621dd7bb | 908 | mutex_enter(&spa->spa_vdev_top_lock); |
3bc7e0fb GW |
909 | mutex_enter(&spa_namespace_lock); |
910 | guid = spa_generate_guid(NULL); | |
3541dc6d | 911 | |
13fe0198 | 912 | error = dsl_sync_task(spa->spa_name, spa_change_guid_check, |
3d45fdd6 | 913 | spa_change_guid_sync, &guid, 5, ZFS_SPACE_CHECK_RESERVED); |
3541dc6d | 914 | |
3bc7e0fb | 915 | if (error == 0) { |
a1d477c2 | 916 | spa_write_cachefile(spa, B_FALSE, B_TRUE); |
12fa0466 | 917 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_REGUID); |
3bc7e0fb | 918 | } |
3541dc6d | 919 | |
3bc7e0fb | 920 | mutex_exit(&spa_namespace_lock); |
621dd7bb | 921 | mutex_exit(&spa->spa_vdev_top_lock); |
3541dc6d | 922 | |
3bc7e0fb | 923 | return (error); |
3541dc6d GA |
924 | } |
925 | ||
34dc7c2f BB |
926 | /* |
927 | * ========================================================================== | |
928 | * SPA state manipulation (open/create/destroy/import/export) | |
929 | * ========================================================================== | |
930 | */ | |
931 | ||
932 | static int | |
933 | spa_error_entry_compare(const void *a, const void *b) | |
934 | { | |
ee36c709 GN |
935 | const spa_error_entry_t *sa = (const spa_error_entry_t *)a; |
936 | const spa_error_entry_t *sb = (const spa_error_entry_t *)b; | |
34dc7c2f BB |
937 | int ret; |
938 | ||
ee36c709 | 939 | ret = memcmp(&sa->se_bookmark, &sb->se_bookmark, |
5dbd68a3 | 940 | sizeof (zbookmark_phys_t)); |
34dc7c2f | 941 | |
ee36c709 | 942 | return (AVL_ISIGN(ret)); |
34dc7c2f BB |
943 | } |
944 | ||
945 | /* | |
946 | * Utility function which retrieves copies of the current logs and | |
947 | * re-initializes them in the process. | |
948 | */ | |
949 | void | |
950 | spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
951 | { | |
952 | ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
953 | ||
954 | bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
955 | bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
956 | ||
957 | avl_create(&spa->spa_errlist_scrub, | |
958 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
959 | offsetof(spa_error_entry_t, se_avl)); | |
960 | avl_create(&spa->spa_errlist_last, | |
961 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
962 | offsetof(spa_error_entry_t, se_avl)); | |
963 | } | |
964 | ||
7ef5e54e AL |
965 | static void |
966 | spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
34dc7c2f | 967 | { |
7ef5e54e AL |
968 | const zio_taskq_info_t *ztip = &zio_taskqs[t][q]; |
969 | enum zti_modes mode = ztip->zti_mode; | |
970 | uint_t value = ztip->zti_value; | |
971 | uint_t count = ztip->zti_count; | |
972 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
1c27024e | 973 | uint_t flags = 0; |
428870ff | 974 | boolean_t batch = B_FALSE; |
34dc7c2f | 975 | |
7ef5e54e AL |
976 | if (mode == ZTI_MODE_NULL) { |
977 | tqs->stqs_count = 0; | |
978 | tqs->stqs_taskq = NULL; | |
979 | return; | |
980 | } | |
428870ff | 981 | |
7ef5e54e | 982 | ASSERT3U(count, >, 0); |
428870ff | 983 | |
7ef5e54e AL |
984 | tqs->stqs_count = count; |
985 | tqs->stqs_taskq = kmem_alloc(count * sizeof (taskq_t *), KM_SLEEP); | |
428870ff | 986 | |
e8b96c60 MA |
987 | switch (mode) { |
988 | case ZTI_MODE_FIXED: | |
989 | ASSERT3U(value, >=, 1); | |
990 | value = MAX(value, 1); | |
d33931a8 | 991 | flags |= TASKQ_DYNAMIC; |
e8b96c60 | 992 | break; |
7ef5e54e | 993 | |
e8b96c60 MA |
994 | case ZTI_MODE_BATCH: |
995 | batch = B_TRUE; | |
996 | flags |= TASKQ_THREADS_CPU_PCT; | |
dcb6bed1 | 997 | value = MIN(zio_taskq_batch_pct, 100); |
e8b96c60 | 998 | break; |
7ef5e54e | 999 | |
e8b96c60 MA |
1000 | default: |
1001 | panic("unrecognized mode for %s_%s taskq (%u:%u) in " | |
1002 | "spa_activate()", | |
1003 | zio_type_name[t], zio_taskq_types[q], mode, value); | |
1004 | break; | |
1005 | } | |
7ef5e54e | 1006 | |
1c27024e | 1007 | for (uint_t i = 0; i < count; i++) { |
e8b96c60 | 1008 | taskq_t *tq; |
af430294 | 1009 | char name[32]; |
7ef5e54e | 1010 | |
af430294 MA |
1011 | (void) snprintf(name, sizeof (name), "%s_%s", |
1012 | zio_type_name[t], zio_taskq_types[q]); | |
7ef5e54e AL |
1013 | |
1014 | if (zio_taskq_sysdc && spa->spa_proc != &p0) { | |
1015 | if (batch) | |
1016 | flags |= TASKQ_DC_BATCH; | |
1017 | ||
1018 | tq = taskq_create_sysdc(name, value, 50, INT_MAX, | |
1019 | spa->spa_proc, zio_taskq_basedc, flags); | |
1020 | } else { | |
e8b96c60 MA |
1021 | pri_t pri = maxclsyspri; |
1022 | /* | |
1023 | * The write issue taskq can be extremely CPU | |
1229323d BB |
1024 | * intensive. Run it at slightly less important |
1025 | * priority than the other taskqs. Under Linux this | |
1026 | * means incrementing the priority value on platforms | |
1027 | * like illumos it should be decremented. | |
e8b96c60 MA |
1028 | */ |
1029 | if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE) | |
1229323d | 1030 | pri++; |
e8b96c60 MA |
1031 | |
1032 | tq = taskq_create_proc(name, value, pri, 50, | |
7ef5e54e AL |
1033 | INT_MAX, spa->spa_proc, flags); |
1034 | } | |
1035 | ||
1036 | tqs->stqs_taskq[i] = tq; | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | spa_taskqs_fini(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
1042 | { | |
1043 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
7ef5e54e AL |
1044 | |
1045 | if (tqs->stqs_taskq == NULL) { | |
1046 | ASSERT3U(tqs->stqs_count, ==, 0); | |
1047 | return; | |
1048 | } | |
1049 | ||
1c27024e | 1050 | for (uint_t i = 0; i < tqs->stqs_count; i++) { |
7ef5e54e AL |
1051 | ASSERT3P(tqs->stqs_taskq[i], !=, NULL); |
1052 | taskq_destroy(tqs->stqs_taskq[i]); | |
428870ff | 1053 | } |
34dc7c2f | 1054 | |
7ef5e54e AL |
1055 | kmem_free(tqs->stqs_taskq, tqs->stqs_count * sizeof (taskq_t *)); |
1056 | tqs->stqs_taskq = NULL; | |
1057 | } | |
34dc7c2f | 1058 | |
7ef5e54e AL |
1059 | /* |
1060 | * Dispatch a task to the appropriate taskq for the ZFS I/O type and priority. | |
1061 | * Note that a type may have multiple discrete taskqs to avoid lock contention | |
1062 | * on the taskq itself. In that case we choose which taskq at random by using | |
1063 | * the low bits of gethrtime(). | |
1064 | */ | |
1065 | void | |
1066 | spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
1067 | task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent) | |
1068 | { | |
1069 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
1070 | taskq_t *tq; | |
1071 | ||
1072 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
1073 | ASSERT3U(tqs->stqs_count, !=, 0); | |
1074 | ||
1075 | if (tqs->stqs_count == 1) { | |
1076 | tq = tqs->stqs_taskq[0]; | |
1077 | } else { | |
c12936b1 | 1078 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
428870ff | 1079 | } |
7ef5e54e AL |
1080 | |
1081 | taskq_dispatch_ent(tq, func, arg, flags, ent); | |
428870ff BB |
1082 | } |
1083 | ||
044baf00 BB |
1084 | /* |
1085 | * Same as spa_taskq_dispatch_ent() but block on the task until completion. | |
1086 | */ | |
1087 | void | |
1088 | spa_taskq_dispatch_sync(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
1089 | task_func_t *func, void *arg, uint_t flags) | |
1090 | { | |
1091 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
1092 | taskq_t *tq; | |
1093 | taskqid_t id; | |
1094 | ||
1095 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
1096 | ASSERT3U(tqs->stqs_count, !=, 0); | |
1097 | ||
1098 | if (tqs->stqs_count == 1) { | |
1099 | tq = tqs->stqs_taskq[0]; | |
1100 | } else { | |
c12936b1 | 1101 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
044baf00 BB |
1102 | } |
1103 | ||
1104 | id = taskq_dispatch(tq, func, arg, flags); | |
1105 | if (id) | |
1106 | taskq_wait_id(tq, id); | |
1107 | } | |
1108 | ||
428870ff BB |
1109 | static void |
1110 | spa_create_zio_taskqs(spa_t *spa) | |
1111 | { | |
1c27024e DB |
1112 | for (int t = 0; t < ZIO_TYPES; t++) { |
1113 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 1114 | spa_taskqs_init(spa, t, q); |
428870ff BB |
1115 | } |
1116 | } | |
1117 | } | |
9babb374 | 1118 | |
c25b8f99 BB |
1119 | /* |
1120 | * Disabled until spa_thread() can be adapted for Linux. | |
1121 | */ | |
1122 | #undef HAVE_SPA_THREAD | |
1123 | ||
7b89a549 | 1124 | #if defined(_KERNEL) && defined(HAVE_SPA_THREAD) |
428870ff BB |
1125 | static void |
1126 | spa_thread(void *arg) | |
1127 | { | |
93ce2b4c | 1128 | psetid_t zio_taskq_psrset_bind = PS_NONE; |
428870ff | 1129 | callb_cpr_t cprinfo; |
9babb374 | 1130 | |
428870ff BB |
1131 | spa_t *spa = arg; |
1132 | user_t *pu = PTOU(curproc); | |
9babb374 | 1133 | |
428870ff BB |
1134 | CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr, |
1135 | spa->spa_name); | |
9babb374 | 1136 | |
428870ff BB |
1137 | ASSERT(curproc != &p0); |
1138 | (void) snprintf(pu->u_psargs, sizeof (pu->u_psargs), | |
1139 | "zpool-%s", spa->spa_name); | |
1140 | (void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm)); | |
1141 | ||
1142 | /* bind this thread to the requested psrset */ | |
1143 | if (zio_taskq_psrset_bind != PS_NONE) { | |
1144 | pool_lock(); | |
1145 | mutex_enter(&cpu_lock); | |
1146 | mutex_enter(&pidlock); | |
1147 | mutex_enter(&curproc->p_lock); | |
1148 | ||
1149 | if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind, | |
1150 | 0, NULL, NULL) == 0) { | |
1151 | curthread->t_bind_pset = zio_taskq_psrset_bind; | |
1152 | } else { | |
1153 | cmn_err(CE_WARN, | |
1154 | "Couldn't bind process for zfs pool \"%s\" to " | |
1155 | "pset %d\n", spa->spa_name, zio_taskq_psrset_bind); | |
1156 | } | |
1157 | ||
1158 | mutex_exit(&curproc->p_lock); | |
1159 | mutex_exit(&pidlock); | |
1160 | mutex_exit(&cpu_lock); | |
1161 | pool_unlock(); | |
1162 | } | |
1163 | ||
1164 | if (zio_taskq_sysdc) { | |
1165 | sysdc_thread_enter(curthread, 100, 0); | |
1166 | } | |
1167 | ||
1168 | spa->spa_proc = curproc; | |
1169 | spa->spa_did = curthread->t_did; | |
1170 | ||
1171 | spa_create_zio_taskqs(spa); | |
1172 | ||
1173 | mutex_enter(&spa->spa_proc_lock); | |
1174 | ASSERT(spa->spa_proc_state == SPA_PROC_CREATED); | |
1175 | ||
1176 | spa->spa_proc_state = SPA_PROC_ACTIVE; | |
1177 | cv_broadcast(&spa->spa_proc_cv); | |
1178 | ||
1179 | CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
1180 | while (spa->spa_proc_state == SPA_PROC_ACTIVE) | |
1181 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1182 | CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock); | |
1183 | ||
1184 | ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE); | |
1185 | spa->spa_proc_state = SPA_PROC_GONE; | |
1186 | spa->spa_proc = &p0; | |
1187 | cv_broadcast(&spa->spa_proc_cv); | |
1188 | CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */ | |
1189 | ||
1190 | mutex_enter(&curproc->p_lock); | |
1191 | lwp_exit(); | |
1192 | } | |
1193 | #endif | |
1194 | ||
1195 | /* | |
1196 | * Activate an uninitialized pool. | |
1197 | */ | |
1198 | static void | |
1199 | spa_activate(spa_t *spa, int mode) | |
1200 | { | |
1201 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
1202 | ||
1203 | spa->spa_state = POOL_STATE_ACTIVE; | |
1204 | spa->spa_mode = mode; | |
1205 | ||
1206 | spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
1207 | spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
cc99f275 DB |
1208 | spa->spa_special_class = metaslab_class_create(spa, zfs_metaslab_ops); |
1209 | spa->spa_dedup_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
428870ff BB |
1210 | |
1211 | /* Try to create a covering process */ | |
1212 | mutex_enter(&spa->spa_proc_lock); | |
1213 | ASSERT(spa->spa_proc_state == SPA_PROC_NONE); | |
1214 | ASSERT(spa->spa_proc == &p0); | |
1215 | spa->spa_did = 0; | |
1216 | ||
7b89a549 | 1217 | #ifdef HAVE_SPA_THREAD |
428870ff BB |
1218 | /* Only create a process if we're going to be around a while. */ |
1219 | if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) { | |
1220 | if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri, | |
1221 | NULL, 0) == 0) { | |
1222 | spa->spa_proc_state = SPA_PROC_CREATED; | |
1223 | while (spa->spa_proc_state == SPA_PROC_CREATED) { | |
1224 | cv_wait(&spa->spa_proc_cv, | |
1225 | &spa->spa_proc_lock); | |
9babb374 | 1226 | } |
428870ff BB |
1227 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); |
1228 | ASSERT(spa->spa_proc != &p0); | |
1229 | ASSERT(spa->spa_did != 0); | |
1230 | } else { | |
1231 | #ifdef _KERNEL | |
1232 | cmn_err(CE_WARN, | |
1233 | "Couldn't create process for zfs pool \"%s\"\n", | |
1234 | spa->spa_name); | |
1235 | #endif | |
b128c09f | 1236 | } |
34dc7c2f | 1237 | } |
7b89a549 | 1238 | #endif /* HAVE_SPA_THREAD */ |
428870ff BB |
1239 | mutex_exit(&spa->spa_proc_lock); |
1240 | ||
1241 | /* If we didn't create a process, we need to create our taskqs. */ | |
1242 | if (spa->spa_proc == &p0) { | |
1243 | spa_create_zio_taskqs(spa); | |
1244 | } | |
34dc7c2f | 1245 | |
619f0976 GW |
1246 | for (size_t i = 0; i < TXG_SIZE; i++) { |
1247 | spa->spa_txg_zio[i] = zio_root(spa, NULL, NULL, | |
1248 | ZIO_FLAG_CANFAIL); | |
1249 | } | |
a1d477c2 | 1250 | |
b128c09f BB |
1251 | list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), |
1252 | offsetof(vdev_t, vdev_config_dirty_node)); | |
0c66c32d JG |
1253 | list_create(&spa->spa_evicting_os_list, sizeof (objset_t), |
1254 | offsetof(objset_t, os_evicting_node)); | |
b128c09f BB |
1255 | list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), |
1256 | offsetof(vdev_t, vdev_state_dirty_node)); | |
34dc7c2f | 1257 | |
4747a7d3 | 1258 | txg_list_create(&spa->spa_vdev_txg_list, spa, |
34dc7c2f BB |
1259 | offsetof(struct vdev, vdev_txg_node)); |
1260 | ||
1261 | avl_create(&spa->spa_errlist_scrub, | |
1262 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1263 | offsetof(spa_error_entry_t, se_avl)); | |
1264 | avl_create(&spa->spa_errlist_last, | |
1265 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1266 | offsetof(spa_error_entry_t, se_avl)); | |
a0bd735a | 1267 | |
b5256303 TC |
1268 | spa_keystore_init(&spa->spa_keystore); |
1269 | ||
a0bd735a BP |
1270 | /* |
1271 | * This taskq is used to perform zvol-minor-related tasks | |
1272 | * asynchronously. This has several advantages, including easy | |
1273 | * resolution of various deadlocks (zfsonlinux bug #3681). | |
1274 | * | |
1275 | * The taskq must be single threaded to ensure tasks are always | |
1276 | * processed in the order in which they were dispatched. | |
1277 | * | |
1278 | * A taskq per pool allows one to keep the pools independent. | |
1279 | * This way if one pool is suspended, it will not impact another. | |
1280 | * | |
1281 | * The preferred location to dispatch a zvol minor task is a sync | |
1282 | * task. In this context, there is easy access to the spa_t and minimal | |
1283 | * error handling is required because the sync task must succeed. | |
1284 | */ | |
1285 | spa->spa_zvol_taskq = taskq_create("z_zvol", 1, defclsyspri, | |
1286 | 1, INT_MAX, 0); | |
1de321e6 | 1287 | |
77d8a0f1 | 1288 | /* |
1289 | * Taskq dedicated to prefetcher threads: this is used to prevent the | |
1290 | * pool traverse code from monopolizing the global (and limited) | |
1291 | * system_taskq by inappropriately scheduling long running tasks on it. | |
1292 | */ | |
1293 | spa->spa_prefetch_taskq = taskq_create("z_prefetch", boot_ncpus, | |
1294 | defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC); | |
1295 | ||
1de321e6 JX |
1296 | /* |
1297 | * The taskq to upgrade datasets in this pool. Currently used by | |
9c5167d1 | 1298 | * feature SPA_FEATURE_USEROBJ_ACCOUNTING/SPA_FEATURE_PROJECT_QUOTA. |
1de321e6 JX |
1299 | */ |
1300 | spa->spa_upgrade_taskq = taskq_create("z_upgrade", boot_ncpus, | |
1301 | defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC); | |
34dc7c2f BB |
1302 | } |
1303 | ||
1304 | /* | |
1305 | * Opposite of spa_activate(). | |
1306 | */ | |
1307 | static void | |
1308 | spa_deactivate(spa_t *spa) | |
1309 | { | |
34dc7c2f BB |
1310 | ASSERT(spa->spa_sync_on == B_FALSE); |
1311 | ASSERT(spa->spa_dsl_pool == NULL); | |
1312 | ASSERT(spa->spa_root_vdev == NULL); | |
9babb374 | 1313 | ASSERT(spa->spa_async_zio_root == NULL); |
34dc7c2f BB |
1314 | ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); |
1315 | ||
0c66c32d JG |
1316 | spa_evicting_os_wait(spa); |
1317 | ||
a0bd735a BP |
1318 | if (spa->spa_zvol_taskq) { |
1319 | taskq_destroy(spa->spa_zvol_taskq); | |
1320 | spa->spa_zvol_taskq = NULL; | |
1321 | } | |
1322 | ||
77d8a0f1 | 1323 | if (spa->spa_prefetch_taskq) { |
1324 | taskq_destroy(spa->spa_prefetch_taskq); | |
1325 | spa->spa_prefetch_taskq = NULL; | |
1326 | } | |
1327 | ||
1de321e6 JX |
1328 | if (spa->spa_upgrade_taskq) { |
1329 | taskq_destroy(spa->spa_upgrade_taskq); | |
1330 | spa->spa_upgrade_taskq = NULL; | |
1331 | } | |
1332 | ||
34dc7c2f BB |
1333 | txg_list_destroy(&spa->spa_vdev_txg_list); |
1334 | ||
b128c09f | 1335 | list_destroy(&spa->spa_config_dirty_list); |
0c66c32d | 1336 | list_destroy(&spa->spa_evicting_os_list); |
b128c09f | 1337 | list_destroy(&spa->spa_state_dirty_list); |
34dc7c2f | 1338 | |
57ddcda1 | 1339 | taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid); |
cc92e9d0 | 1340 | |
1c27024e DB |
1341 | for (int t = 0; t < ZIO_TYPES; t++) { |
1342 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 1343 | spa_taskqs_fini(spa, t, q); |
b128c09f | 1344 | } |
34dc7c2f BB |
1345 | } |
1346 | ||
a1d477c2 MA |
1347 | for (size_t i = 0; i < TXG_SIZE; i++) { |
1348 | ASSERT3P(spa->spa_txg_zio[i], !=, NULL); | |
1349 | VERIFY0(zio_wait(spa->spa_txg_zio[i])); | |
1350 | spa->spa_txg_zio[i] = NULL; | |
1351 | } | |
1352 | ||
34dc7c2f BB |
1353 | metaslab_class_destroy(spa->spa_normal_class); |
1354 | spa->spa_normal_class = NULL; | |
1355 | ||
1356 | metaslab_class_destroy(spa->spa_log_class); | |
1357 | spa->spa_log_class = NULL; | |
1358 | ||
cc99f275 DB |
1359 | metaslab_class_destroy(spa->spa_special_class); |
1360 | spa->spa_special_class = NULL; | |
1361 | ||
1362 | metaslab_class_destroy(spa->spa_dedup_class); | |
1363 | spa->spa_dedup_class = NULL; | |
1364 | ||
34dc7c2f BB |
1365 | /* |
1366 | * If this was part of an import or the open otherwise failed, we may | |
1367 | * still have errors left in the queues. Empty them just in case. | |
1368 | */ | |
1369 | spa_errlog_drain(spa); | |
34dc7c2f BB |
1370 | avl_destroy(&spa->spa_errlist_scrub); |
1371 | avl_destroy(&spa->spa_errlist_last); | |
1372 | ||
b5256303 TC |
1373 | spa_keystore_fini(&spa->spa_keystore); |
1374 | ||
34dc7c2f | 1375 | spa->spa_state = POOL_STATE_UNINITIALIZED; |
428870ff BB |
1376 | |
1377 | mutex_enter(&spa->spa_proc_lock); | |
1378 | if (spa->spa_proc_state != SPA_PROC_NONE) { | |
1379 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); | |
1380 | spa->spa_proc_state = SPA_PROC_DEACTIVATE; | |
1381 | cv_broadcast(&spa->spa_proc_cv); | |
1382 | while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) { | |
1383 | ASSERT(spa->spa_proc != &p0); | |
1384 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1385 | } | |
1386 | ASSERT(spa->spa_proc_state == SPA_PROC_GONE); | |
1387 | spa->spa_proc_state = SPA_PROC_NONE; | |
1388 | } | |
1389 | ASSERT(spa->spa_proc == &p0); | |
1390 | mutex_exit(&spa->spa_proc_lock); | |
1391 | ||
1392 | /* | |
1393 | * We want to make sure spa_thread() has actually exited the ZFS | |
1394 | * module, so that the module can't be unloaded out from underneath | |
1395 | * it. | |
1396 | */ | |
1397 | if (spa->spa_did != 0) { | |
1398 | thread_join(spa->spa_did); | |
1399 | spa->spa_did = 0; | |
1400 | } | |
34dc7c2f BB |
1401 | } |
1402 | ||
1403 | /* | |
1404 | * Verify a pool configuration, and construct the vdev tree appropriately. This | |
1405 | * will create all the necessary vdevs in the appropriate layout, with each vdev | |
1406 | * in the CLOSED state. This will prep the pool before open/creation/import. | |
1407 | * All vdev validation is done by the vdev_alloc() routine. | |
1408 | */ | |
1409 | static int | |
1410 | spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
1411 | uint_t id, int atype) | |
1412 | { | |
1413 | nvlist_t **child; | |
9babb374 | 1414 | uint_t children; |
34dc7c2f BB |
1415 | int error; |
1416 | ||
1417 | if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
1418 | return (error); | |
1419 | ||
1420 | if ((*vdp)->vdev_ops->vdev_op_leaf) | |
1421 | return (0); | |
1422 | ||
b128c09f BB |
1423 | error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
1424 | &child, &children); | |
1425 | ||
1426 | if (error == ENOENT) | |
1427 | return (0); | |
1428 | ||
1429 | if (error) { | |
34dc7c2f BB |
1430 | vdev_free(*vdp); |
1431 | *vdp = NULL; | |
2e528b49 | 1432 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
1433 | } |
1434 | ||
1c27024e | 1435 | for (int c = 0; c < children; c++) { |
34dc7c2f BB |
1436 | vdev_t *vd; |
1437 | if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
1438 | atype)) != 0) { | |
1439 | vdev_free(*vdp); | |
1440 | *vdp = NULL; | |
1441 | return (error); | |
1442 | } | |
1443 | } | |
1444 | ||
1445 | ASSERT(*vdp != NULL); | |
1446 | ||
1447 | return (0); | |
1448 | } | |
1449 | ||
93e28d66 SD |
1450 | static boolean_t |
1451 | spa_should_flush_logs_on_unload(spa_t *spa) | |
1452 | { | |
1453 | if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) | |
1454 | return (B_FALSE); | |
1455 | ||
1456 | if (!spa_writeable(spa)) | |
1457 | return (B_FALSE); | |
1458 | ||
1459 | if (!spa->spa_sync_on) | |
1460 | return (B_FALSE); | |
1461 | ||
1462 | if (spa_state(spa) != POOL_STATE_EXPORTED) | |
1463 | return (B_FALSE); | |
1464 | ||
1465 | if (zfs_keep_log_spacemaps_at_export) | |
1466 | return (B_FALSE); | |
1467 | ||
1468 | return (B_TRUE); | |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * Opens a transaction that will set the flag that will instruct | |
1473 | * spa_sync to attempt to flush all the metaslabs for that txg. | |
1474 | */ | |
1475 | static void | |
1476 | spa_unload_log_sm_flush_all(spa_t *spa) | |
1477 | { | |
1478 | dmu_tx_t *tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
1479 | VERIFY0(dmu_tx_assign(tx, TXG_WAIT)); | |
1480 | ||
1481 | ASSERT3U(spa->spa_log_flushall_txg, ==, 0); | |
1482 | spa->spa_log_flushall_txg = dmu_tx_get_txg(tx); | |
1483 | ||
1484 | dmu_tx_commit(tx); | |
1485 | txg_wait_synced(spa_get_dsl(spa), spa->spa_log_flushall_txg); | |
1486 | } | |
1487 | ||
1488 | static void | |
1489 | spa_unload_log_sm_metadata(spa_t *spa) | |
1490 | { | |
1491 | void *cookie = NULL; | |
1492 | spa_log_sm_t *sls; | |
1493 | while ((sls = avl_destroy_nodes(&spa->spa_sm_logs_by_txg, | |
1494 | &cookie)) != NULL) { | |
1495 | VERIFY0(sls->sls_mscount); | |
1496 | kmem_free(sls, sizeof (spa_log_sm_t)); | |
1497 | } | |
1498 | ||
1499 | for (log_summary_entry_t *e = list_head(&spa->spa_log_summary); | |
1500 | e != NULL; e = list_head(&spa->spa_log_summary)) { | |
1501 | VERIFY0(e->lse_mscount); | |
1502 | list_remove(&spa->spa_log_summary, e); | |
1503 | kmem_free(e, sizeof (log_summary_entry_t)); | |
1504 | } | |
1505 | ||
1506 | spa->spa_unflushed_stats.sus_nblocks = 0; | |
1507 | spa->spa_unflushed_stats.sus_memused = 0; | |
1508 | spa->spa_unflushed_stats.sus_blocklimit = 0; | |
1509 | } | |
1510 | ||
37f03da8 SH |
1511 | static void |
1512 | spa_destroy_aux_threads(spa_t *spa) | |
1513 | { | |
1514 | if (spa->spa_condense_zthr != NULL) { | |
1515 | zthr_destroy(spa->spa_condense_zthr); | |
1516 | spa->spa_condense_zthr = NULL; | |
1517 | } | |
1518 | if (spa->spa_checkpoint_discard_zthr != NULL) { | |
1519 | zthr_destroy(spa->spa_checkpoint_discard_zthr); | |
1520 | spa->spa_checkpoint_discard_zthr = NULL; | |
1521 | } | |
1522 | if (spa->spa_livelist_delete_zthr != NULL) { | |
1523 | zthr_destroy(spa->spa_livelist_delete_zthr); | |
1524 | spa->spa_livelist_delete_zthr = NULL; | |
1525 | } | |
1526 | if (spa->spa_livelist_condense_zthr != NULL) { | |
1527 | zthr_destroy(spa->spa_livelist_condense_zthr); | |
1528 | spa->spa_livelist_condense_zthr = NULL; | |
1529 | } | |
1530 | } | |
1531 | ||
34dc7c2f BB |
1532 | /* |
1533 | * Opposite of spa_load(). | |
1534 | */ | |
1535 | static void | |
1536 | spa_unload(spa_t *spa) | |
1537 | { | |
b128c09f | 1538 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
93e28d66 | 1539 | ASSERT(spa_state(spa) != POOL_STATE_UNINITIALIZED); |
b128c09f | 1540 | |
ca95f70d | 1541 | spa_import_progress_remove(spa_guid(spa)); |
4a0ee12a PZ |
1542 | spa_load_note(spa, "UNLOADING"); |
1543 | ||
93e28d66 SD |
1544 | /* |
1545 | * If the log space map feature is enabled and the pool is getting | |
1546 | * exported (but not destroyed), we want to spend some time flushing | |
1547 | * as many metaslabs as we can in an attempt to destroy log space | |
1548 | * maps and save import time. | |
1549 | */ | |
1550 | if (spa_should_flush_logs_on_unload(spa)) | |
1551 | spa_unload_log_sm_flush_all(spa); | |
1552 | ||
34dc7c2f BB |
1553 | /* |
1554 | * Stop async tasks. | |
1555 | */ | |
1556 | spa_async_suspend(spa); | |
1557 | ||
619f0976 | 1558 | if (spa->spa_root_vdev) { |
1b939560 BB |
1559 | vdev_t *root_vdev = spa->spa_root_vdev; |
1560 | vdev_initialize_stop_all(root_vdev, VDEV_INITIALIZE_ACTIVE); | |
1561 | vdev_trim_stop_all(root_vdev, VDEV_TRIM_ACTIVE); | |
1562 | vdev_autotrim_stop_all(spa); | |
619f0976 GW |
1563 | } |
1564 | ||
34dc7c2f BB |
1565 | /* |
1566 | * Stop syncing. | |
1567 | */ | |
1568 | if (spa->spa_sync_on) { | |
1569 | txg_sync_stop(spa->spa_dsl_pool); | |
1570 | spa->spa_sync_on = B_FALSE; | |
1571 | } | |
1572 | ||
4e21fd06 | 1573 | /* |
93e28d66 SD |
1574 | * This ensures that there is no async metaslab prefetching |
1575 | * while we attempt to unload the spa. | |
4e21fd06 DB |
1576 | */ |
1577 | if (spa->spa_root_vdev != NULL) { | |
93e28d66 SD |
1578 | for (int c = 0; c < spa->spa_root_vdev->vdev_children; c++) { |
1579 | vdev_t *vc = spa->spa_root_vdev->vdev_child[c]; | |
1580 | if (vc->vdev_mg != NULL) | |
1581 | taskq_wait(vc->vdev_mg->mg_taskq); | |
1582 | } | |
4e21fd06 DB |
1583 | } |
1584 | ||
379ca9cf OF |
1585 | if (spa->spa_mmp.mmp_thread) |
1586 | mmp_thread_stop(spa); | |
1587 | ||
34dc7c2f | 1588 | /* |
b128c09f | 1589 | * Wait for any outstanding async I/O to complete. |
34dc7c2f | 1590 | */ |
9babb374 | 1591 | if (spa->spa_async_zio_root != NULL) { |
1c27024e | 1592 | for (int i = 0; i < max_ncpus; i++) |
e022864d MA |
1593 | (void) zio_wait(spa->spa_async_zio_root[i]); |
1594 | kmem_free(spa->spa_async_zio_root, max_ncpus * sizeof (void *)); | |
9babb374 BB |
1595 | spa->spa_async_zio_root = NULL; |
1596 | } | |
34dc7c2f | 1597 | |
a1d477c2 MA |
1598 | if (spa->spa_vdev_removal != NULL) { |
1599 | spa_vdev_removal_destroy(spa->spa_vdev_removal); | |
1600 | spa->spa_vdev_removal = NULL; | |
1601 | } | |
1602 | ||
37f03da8 | 1603 | spa_destroy_aux_threads(spa); |
d2734cce | 1604 | |
a1d477c2 MA |
1605 | spa_condense_fini(spa); |
1606 | ||
428870ff BB |
1607 | bpobj_close(&spa->spa_deferred_bpobj); |
1608 | ||
619f0976 | 1609 | spa_config_enter(spa, SCL_ALL, spa, RW_WRITER); |
93cf2076 GW |
1610 | |
1611 | /* | |
1612 | * Close all vdevs. | |
1613 | */ | |
1614 | if (spa->spa_root_vdev) | |
1615 | vdev_free(spa->spa_root_vdev); | |
1616 | ASSERT(spa->spa_root_vdev == NULL); | |
1617 | ||
34dc7c2f BB |
1618 | /* |
1619 | * Close the dsl pool. | |
1620 | */ | |
1621 | if (spa->spa_dsl_pool) { | |
1622 | dsl_pool_close(spa->spa_dsl_pool); | |
1623 | spa->spa_dsl_pool = NULL; | |
428870ff | 1624 | spa->spa_meta_objset = NULL; |
34dc7c2f BB |
1625 | } |
1626 | ||
428870ff | 1627 | ddt_unload(spa); |
93e28d66 | 1628 | spa_unload_log_sm_metadata(spa); |
428870ff | 1629 | |
fb5f0bc8 BB |
1630 | /* |
1631 | * Drop and purge level 2 cache | |
1632 | */ | |
1633 | spa_l2cache_drop(spa); | |
1634 | ||
93e28d66 | 1635 | for (int i = 0; i < spa->spa_spares.sav_count; i++) |
34dc7c2f BB |
1636 | vdev_free(spa->spa_spares.sav_vdevs[i]); |
1637 | if (spa->spa_spares.sav_vdevs) { | |
1638 | kmem_free(spa->spa_spares.sav_vdevs, | |
1639 | spa->spa_spares.sav_count * sizeof (void *)); | |
1640 | spa->spa_spares.sav_vdevs = NULL; | |
1641 | } | |
1642 | if (spa->spa_spares.sav_config) { | |
1643 | nvlist_free(spa->spa_spares.sav_config); | |
1644 | spa->spa_spares.sav_config = NULL; | |
1645 | } | |
b128c09f | 1646 | spa->spa_spares.sav_count = 0; |
34dc7c2f | 1647 | |
93e28d66 | 1648 | for (int i = 0; i < spa->spa_l2cache.sav_count; i++) { |
5ffb9d1d | 1649 | vdev_clear_stats(spa->spa_l2cache.sav_vdevs[i]); |
34dc7c2f | 1650 | vdev_free(spa->spa_l2cache.sav_vdevs[i]); |
5ffb9d1d | 1651 | } |
34dc7c2f BB |
1652 | if (spa->spa_l2cache.sav_vdevs) { |
1653 | kmem_free(spa->spa_l2cache.sav_vdevs, | |
1654 | spa->spa_l2cache.sav_count * sizeof (void *)); | |
1655 | spa->spa_l2cache.sav_vdevs = NULL; | |
1656 | } | |
1657 | if (spa->spa_l2cache.sav_config) { | |
1658 | nvlist_free(spa->spa_l2cache.sav_config); | |
1659 | spa->spa_l2cache.sav_config = NULL; | |
1660 | } | |
b128c09f | 1661 | spa->spa_l2cache.sav_count = 0; |
34dc7c2f BB |
1662 | |
1663 | spa->spa_async_suspended = 0; | |
fb5f0bc8 | 1664 | |
a1d477c2 MA |
1665 | spa->spa_indirect_vdevs_loaded = B_FALSE; |
1666 | ||
d96eb2b1 DM |
1667 | if (spa->spa_comment != NULL) { |
1668 | spa_strfree(spa->spa_comment); | |
1669 | spa->spa_comment = NULL; | |
1670 | } | |
1671 | ||
619f0976 | 1672 | spa_config_exit(spa, SCL_ALL, spa); |
34dc7c2f BB |
1673 | } |
1674 | ||
1675 | /* | |
1676 | * Load (or re-load) the current list of vdevs describing the active spares for | |
1677 | * this pool. When this is called, we have some form of basic information in | |
1678 | * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and | |
1679 | * then re-generate a more complete list including status information. | |
1680 | */ | |
a1d477c2 | 1681 | void |
34dc7c2f BB |
1682 | spa_load_spares(spa_t *spa) |
1683 | { | |
1684 | nvlist_t **spares; | |
1685 | uint_t nspares; | |
1686 | int i; | |
1687 | vdev_t *vd, *tvd; | |
1688 | ||
d2734cce SD |
1689 | #ifndef _KERNEL |
1690 | /* | |
1691 | * zdb opens both the current state of the pool and the | |
1692 | * checkpointed state (if present), with a different spa_t. | |
1693 | * | |
1694 | * As spare vdevs are shared among open pools, we skip loading | |
1695 | * them when we load the checkpointed state of the pool. | |
1696 | */ | |
1697 | if (!spa_writeable(spa)) | |
1698 | return; | |
1699 | #endif | |
1700 | ||
b128c09f BB |
1701 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1702 | ||
34dc7c2f BB |
1703 | /* |
1704 | * First, close and free any existing spare vdevs. | |
1705 | */ | |
1706 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
1707 | vd = spa->spa_spares.sav_vdevs[i]; | |
1708 | ||
1709 | /* Undo the call to spa_activate() below */ | |
b128c09f BB |
1710 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1711 | B_FALSE)) != NULL && tvd->vdev_isspare) | |
34dc7c2f BB |
1712 | spa_spare_remove(tvd); |
1713 | vdev_close(vd); | |
1714 | vdev_free(vd); | |
1715 | } | |
1716 | ||
1717 | if (spa->spa_spares.sav_vdevs) | |
1718 | kmem_free(spa->spa_spares.sav_vdevs, | |
1719 | spa->spa_spares.sav_count * sizeof (void *)); | |
1720 | ||
1721 | if (spa->spa_spares.sav_config == NULL) | |
1722 | nspares = 0; | |
1723 | else | |
1724 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
1725 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1726 | ||
1727 | spa->spa_spares.sav_count = (int)nspares; | |
1728 | spa->spa_spares.sav_vdevs = NULL; | |
1729 | ||
1730 | if (nspares == 0) | |
1731 | return; | |
1732 | ||
1733 | /* | |
1734 | * Construct the array of vdevs, opening them to get status in the | |
1735 | * process. For each spare, there is potentially two different vdev_t | |
1736 | * structures associated with it: one in the list of spares (used only | |
1737 | * for basic validation purposes) and one in the active vdev | |
1738 | * configuration (if it's spared in). During this phase we open and | |
1739 | * validate each vdev on the spare list. If the vdev also exists in the | |
1740 | * active configuration, then we also mark this vdev as an active spare. | |
1741 | */ | |
904ea276 | 1742 | spa->spa_spares.sav_vdevs = kmem_zalloc(nspares * sizeof (void *), |
79c76d5b | 1743 | KM_SLEEP); |
34dc7c2f BB |
1744 | for (i = 0; i < spa->spa_spares.sav_count; i++) { |
1745 | VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
1746 | VDEV_ALLOC_SPARE) == 0); | |
1747 | ASSERT(vd != NULL); | |
1748 | ||
1749 | spa->spa_spares.sav_vdevs[i] = vd; | |
1750 | ||
b128c09f BB |
1751 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1752 | B_FALSE)) != NULL) { | |
34dc7c2f BB |
1753 | if (!tvd->vdev_isspare) |
1754 | spa_spare_add(tvd); | |
1755 | ||
1756 | /* | |
1757 | * We only mark the spare active if we were successfully | |
1758 | * able to load the vdev. Otherwise, importing a pool | |
1759 | * with a bad active spare would result in strange | |
1760 | * behavior, because multiple pool would think the spare | |
1761 | * is actively in use. | |
1762 | * | |
1763 | * There is a vulnerability here to an equally bizarre | |
1764 | * circumstance, where a dead active spare is later | |
1765 | * brought back to life (onlined or otherwise). Given | |
1766 | * the rarity of this scenario, and the extra complexity | |
1767 | * it adds, we ignore the possibility. | |
1768 | */ | |
1769 | if (!vdev_is_dead(tvd)) | |
1770 | spa_spare_activate(tvd); | |
1771 | } | |
1772 | ||
b128c09f | 1773 | vd->vdev_top = vd; |
9babb374 | 1774 | vd->vdev_aux = &spa->spa_spares; |
b128c09f | 1775 | |
34dc7c2f BB |
1776 | if (vdev_open(vd) != 0) |
1777 | continue; | |
1778 | ||
34dc7c2f BB |
1779 | if (vdev_validate_aux(vd) == 0) |
1780 | spa_spare_add(vd); | |
1781 | } | |
1782 | ||
1783 | /* | |
1784 | * Recompute the stashed list of spares, with status information | |
1785 | * this time. | |
1786 | */ | |
1787 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
1788 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1789 | ||
1790 | spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), | |
79c76d5b | 1791 | KM_SLEEP); |
34dc7c2f BB |
1792 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
1793 | spares[i] = vdev_config_generate(spa, | |
428870ff | 1794 | spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE); |
34dc7c2f BB |
1795 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
1796 | ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
1797 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1798 | nvlist_free(spares[i]); | |
1799 | kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); | |
1800 | } | |
1801 | ||
1802 | /* | |
1803 | * Load (or re-load) the current list of vdevs describing the active l2cache for | |
1804 | * this pool. When this is called, we have some form of basic information in | |
1805 | * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
1806 | * then re-generate a more complete list including status information. | |
1807 | * Devices which are already active have their details maintained, and are | |
1808 | * not re-opened. | |
1809 | */ | |
a1d477c2 | 1810 | void |
34dc7c2f BB |
1811 | spa_load_l2cache(spa_t *spa) |
1812 | { | |
460f239e | 1813 | nvlist_t **l2cache = NULL; |
34dc7c2f BB |
1814 | uint_t nl2cache; |
1815 | int i, j, oldnvdevs; | |
9babb374 | 1816 | uint64_t guid; |
a117a6d6 | 1817 | vdev_t *vd, **oldvdevs, **newvdevs; |
34dc7c2f BB |
1818 | spa_aux_vdev_t *sav = &spa->spa_l2cache; |
1819 | ||
d2734cce SD |
1820 | #ifndef _KERNEL |
1821 | /* | |
1822 | * zdb opens both the current state of the pool and the | |
1823 | * checkpointed state (if present), with a different spa_t. | |
1824 | * | |
1825 | * As L2 caches are part of the ARC which is shared among open | |
1826 | * pools, we skip loading them when we load the checkpointed | |
1827 | * state of the pool. | |
1828 | */ | |
1829 | if (!spa_writeable(spa)) | |
1830 | return; | |
1831 | #endif | |
1832 | ||
b128c09f BB |
1833 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1834 | ||
34dc7c2f BB |
1835 | oldvdevs = sav->sav_vdevs; |
1836 | oldnvdevs = sav->sav_count; | |
1837 | sav->sav_vdevs = NULL; | |
1838 | sav->sav_count = 0; | |
1839 | ||
67d60824 NB |
1840 | if (sav->sav_config == NULL) { |
1841 | nl2cache = 0; | |
1842 | newvdevs = NULL; | |
1843 | goto out; | |
1844 | } | |
1845 | ||
1846 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
1847 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1848 | newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); | |
1849 | ||
34dc7c2f BB |
1850 | /* |
1851 | * Process new nvlist of vdevs. | |
1852 | */ | |
1853 | for (i = 0; i < nl2cache; i++) { | |
1854 | VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
1855 | &guid) == 0); | |
1856 | ||
1857 | newvdevs[i] = NULL; | |
1858 | for (j = 0; j < oldnvdevs; j++) { | |
1859 | vd = oldvdevs[j]; | |
1860 | if (vd != NULL && guid == vd->vdev_guid) { | |
1861 | /* | |
1862 | * Retain previous vdev for add/remove ops. | |
1863 | */ | |
1864 | newvdevs[i] = vd; | |
1865 | oldvdevs[j] = NULL; | |
1866 | break; | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | if (newvdevs[i] == NULL) { | |
1871 | /* | |
1872 | * Create new vdev | |
1873 | */ | |
1874 | VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
1875 | VDEV_ALLOC_L2CACHE) == 0); | |
1876 | ASSERT(vd != NULL); | |
1877 | newvdevs[i] = vd; | |
1878 | ||
1879 | /* | |
1880 | * Commit this vdev as an l2cache device, | |
1881 | * even if it fails to open. | |
1882 | */ | |
1883 | spa_l2cache_add(vd); | |
1884 | ||
b128c09f BB |
1885 | vd->vdev_top = vd; |
1886 | vd->vdev_aux = sav; | |
1887 | ||
1888 | spa_l2cache_activate(vd); | |
1889 | ||
34dc7c2f BB |
1890 | if (vdev_open(vd) != 0) |
1891 | continue; | |
1892 | ||
34dc7c2f BB |
1893 | (void) vdev_validate_aux(vd); |
1894 | ||
9babb374 BB |
1895 | if (!vdev_is_dead(vd)) |
1896 | l2arc_add_vdev(spa, vd); | |
34dc7c2f BB |
1897 | } |
1898 | } | |
1899 | ||
67d60824 NB |
1900 | sav->sav_vdevs = newvdevs; |
1901 | sav->sav_count = (int)nl2cache; | |
1902 | ||
1903 | /* | |
1904 | * Recompute the stashed list of l2cache devices, with status | |
1905 | * information this time. | |
1906 | */ | |
1907 | VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
1908 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1909 | ||
460f239e D |
1910 | if (sav->sav_count > 0) |
1911 | l2cache = kmem_alloc(sav->sav_count * sizeof (void *), | |
1912 | KM_SLEEP); | |
67d60824 NB |
1913 | for (i = 0; i < sav->sav_count; i++) |
1914 | l2cache[i] = vdev_config_generate(spa, | |
1915 | sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); | |
1916 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
1917 | ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
1918 | ||
1919 | out: | |
34dc7c2f BB |
1920 | /* |
1921 | * Purge vdevs that were dropped | |
1922 | */ | |
1923 | for (i = 0; i < oldnvdevs; i++) { | |
1924 | uint64_t pool; | |
1925 | ||
1926 | vd = oldvdevs[i]; | |
1927 | if (vd != NULL) { | |
5ffb9d1d GW |
1928 | ASSERT(vd->vdev_isl2cache); |
1929 | ||
fb5f0bc8 BB |
1930 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
1931 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 1932 | l2arc_remove_vdev(vd); |
5ffb9d1d GW |
1933 | vdev_clear_stats(vd); |
1934 | vdev_free(vd); | |
34dc7c2f BB |
1935 | } |
1936 | } | |
1937 | ||
1938 | if (oldvdevs) | |
1939 | kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
1940 | ||
34dc7c2f BB |
1941 | for (i = 0; i < sav->sav_count; i++) |
1942 | nvlist_free(l2cache[i]); | |
1943 | if (sav->sav_count) | |
1944 | kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
1945 | } | |
1946 | ||
1947 | static int | |
1948 | load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
1949 | { | |
1950 | dmu_buf_t *db; | |
1951 | char *packed = NULL; | |
1952 | size_t nvsize = 0; | |
1953 | int error; | |
1954 | *value = NULL; | |
1955 | ||
c3275b56 BB |
1956 | error = dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db); |
1957 | if (error) | |
1958 | return (error); | |
1959 | ||
34dc7c2f BB |
1960 | nvsize = *(uint64_t *)db->db_data; |
1961 | dmu_buf_rele(db, FTAG); | |
1962 | ||
77aef6f6 | 1963 | packed = vmem_alloc(nvsize, KM_SLEEP); |
9babb374 BB |
1964 | error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed, |
1965 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
1966 | if (error == 0) |
1967 | error = nvlist_unpack(packed, nvsize, value, 0); | |
77aef6f6 | 1968 | vmem_free(packed, nvsize); |
34dc7c2f BB |
1969 | |
1970 | return (error); | |
1971 | } | |
1972 | ||
6cb8e530 PZ |
1973 | /* |
1974 | * Concrete top-level vdevs that are not missing and are not logs. At every | |
1975 | * spa_sync we write new uberblocks to at least SPA_SYNC_MIN_VDEVS core tvds. | |
1976 | */ | |
1977 | static uint64_t | |
1978 | spa_healthy_core_tvds(spa_t *spa) | |
1979 | { | |
1980 | vdev_t *rvd = spa->spa_root_vdev; | |
1981 | uint64_t tvds = 0; | |
1982 | ||
1983 | for (uint64_t i = 0; i < rvd->vdev_children; i++) { | |
1984 | vdev_t *vd = rvd->vdev_child[i]; | |
1985 | if (vd->vdev_islog) | |
1986 | continue; | |
1987 | if (vdev_is_concrete(vd) && !vdev_is_dead(vd)) | |
1988 | tvds++; | |
1989 | } | |
1990 | ||
1991 | return (tvds); | |
1992 | } | |
1993 | ||
34dc7c2f BB |
1994 | /* |
1995 | * Checks to see if the given vdev could not be opened, in which case we post a | |
1996 | * sysevent to notify the autoreplace code that the device has been removed. | |
1997 | */ | |
1998 | static void | |
1999 | spa_check_removed(vdev_t *vd) | |
2000 | { | |
6cb8e530 | 2001 | for (uint64_t c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
2002 | spa_check_removed(vd->vdev_child[c]); |
2003 | ||
7011fb60 | 2004 | if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd) && |
a1d477c2 | 2005 | vdev_is_concrete(vd)) { |
fb390aaf | 2006 | zfs_post_autoreplace(vd->vdev_spa, vd); |
12fa0466 | 2007 | spa_event_notify(vd->vdev_spa, vd, NULL, ESC_ZFS_VDEV_CHECK); |
34dc7c2f BB |
2008 | } |
2009 | } | |
2010 | ||
6cb8e530 PZ |
2011 | static int |
2012 | spa_check_for_missing_logs(spa_t *spa) | |
9babb374 | 2013 | { |
6cb8e530 | 2014 | vdev_t *rvd = spa->spa_root_vdev; |
9babb374 | 2015 | |
428870ff | 2016 | /* |
572e2857 | 2017 | * If we're doing a normal import, then build up any additional |
6cb8e530 | 2018 | * diagnostic information about missing log devices. |
572e2857 | 2019 | * We'll pass this up to the user for further processing. |
428870ff | 2020 | */ |
572e2857 BB |
2021 | if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) { |
2022 | nvlist_t **child, *nv; | |
2023 | uint64_t idx = 0; | |
2024 | ||
160987b5 | 2025 | child = kmem_alloc(rvd->vdev_children * sizeof (nvlist_t *), |
79c76d5b BB |
2026 | KM_SLEEP); |
2027 | VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
572e2857 | 2028 | |
6cb8e530 | 2029 | for (uint64_t c = 0; c < rvd->vdev_children; c++) { |
572e2857 | 2030 | vdev_t *tvd = rvd->vdev_child[c]; |
572e2857 | 2031 | |
6cb8e530 PZ |
2032 | /* |
2033 | * We consider a device as missing only if it failed | |
2034 | * to open (i.e. offline or faulted is not considered | |
2035 | * as missing). | |
2036 | */ | |
2037 | if (tvd->vdev_islog && | |
2038 | tvd->vdev_state == VDEV_STATE_CANT_OPEN) { | |
2039 | child[idx++] = vdev_config_generate(spa, tvd, | |
2040 | B_FALSE, VDEV_CONFIG_MISSING); | |
2041 | } | |
572e2857 | 2042 | } |
9babb374 | 2043 | |
6cb8e530 PZ |
2044 | if (idx > 0) { |
2045 | fnvlist_add_nvlist_array(nv, | |
2046 | ZPOOL_CONFIG_CHILDREN, child, idx); | |
2047 | fnvlist_add_nvlist(spa->spa_load_info, | |
2048 | ZPOOL_CONFIG_MISSING_DEVICES, nv); | |
572e2857 | 2049 | |
6cb8e530 | 2050 | for (uint64_t i = 0; i < idx; i++) |
572e2857 BB |
2051 | nvlist_free(child[i]); |
2052 | } | |
2053 | nvlist_free(nv); | |
2054 | kmem_free(child, rvd->vdev_children * sizeof (char **)); | |
572e2857 | 2055 | |
6cb8e530 PZ |
2056 | if (idx > 0) { |
2057 | spa_load_failed(spa, "some log devices are missing"); | |
db7d07e1 | 2058 | vdev_dbgmsg_print_tree(rvd, 2); |
6cb8e530 PZ |
2059 | return (SET_ERROR(ENXIO)); |
2060 | } | |
2061 | } else { | |
2062 | for (uint64_t c = 0; c < rvd->vdev_children; c++) { | |
2063 | vdev_t *tvd = rvd->vdev_child[c]; | |
a1d477c2 | 2064 | |
6cb8e530 PZ |
2065 | if (tvd->vdev_islog && |
2066 | tvd->vdev_state == VDEV_STATE_CANT_OPEN) { | |
572e2857 | 2067 | spa_set_log_state(spa, SPA_LOG_CLEAR); |
6cb8e530 PZ |
2068 | spa_load_note(spa, "some log devices are " |
2069 | "missing, ZIL is dropped."); | |
db7d07e1 | 2070 | vdev_dbgmsg_print_tree(rvd, 2); |
6cb8e530 | 2071 | break; |
e0ab3ab5 | 2072 | } |
572e2857 | 2073 | } |
9babb374 | 2074 | } |
e0ab3ab5 | 2075 | |
6cb8e530 | 2076 | return (0); |
9babb374 BB |
2077 | } |
2078 | ||
b128c09f BB |
2079 | /* |
2080 | * Check for missing log devices | |
2081 | */ | |
13fe0198 | 2082 | static boolean_t |
b128c09f BB |
2083 | spa_check_logs(spa_t *spa) |
2084 | { | |
13fe0198 | 2085 | boolean_t rv = B_FALSE; |
9c43027b | 2086 | dsl_pool_t *dp = spa_get_dsl(spa); |
13fe0198 | 2087 | |
b128c09f | 2088 | switch (spa->spa_log_state) { |
e75c13c3 BB |
2089 | default: |
2090 | break; | |
b128c09f BB |
2091 | case SPA_LOG_MISSING: |
2092 | /* need to recheck in case slog has been restored */ | |
2093 | case SPA_LOG_UNKNOWN: | |
9c43027b AJ |
2094 | rv = (dmu_objset_find_dp(dp, dp->dp_root_dir_obj, |
2095 | zil_check_log_chain, NULL, DS_FIND_CHILDREN) != 0); | |
13fe0198 | 2096 | if (rv) |
428870ff | 2097 | spa_set_log_state(spa, SPA_LOG_MISSING); |
b128c09f | 2098 | break; |
b128c09f | 2099 | } |
13fe0198 | 2100 | return (rv); |
b128c09f BB |
2101 | } |
2102 | ||
428870ff BB |
2103 | static boolean_t |
2104 | spa_passivate_log(spa_t *spa) | |
34dc7c2f | 2105 | { |
428870ff BB |
2106 | vdev_t *rvd = spa->spa_root_vdev; |
2107 | boolean_t slog_found = B_FALSE; | |
b128c09f | 2108 | |
428870ff | 2109 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
fb5f0bc8 | 2110 | |
428870ff BB |
2111 | if (!spa_has_slogs(spa)) |
2112 | return (B_FALSE); | |
34dc7c2f | 2113 | |
1c27024e | 2114 | for (int c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
2115 | vdev_t *tvd = rvd->vdev_child[c]; |
2116 | metaslab_group_t *mg = tvd->vdev_mg; | |
34dc7c2f | 2117 | |
428870ff BB |
2118 | if (tvd->vdev_islog) { |
2119 | metaslab_group_passivate(mg); | |
2120 | slog_found = B_TRUE; | |
2121 | } | |
34dc7c2f BB |
2122 | } |
2123 | ||
428870ff BB |
2124 | return (slog_found); |
2125 | } | |
34dc7c2f | 2126 | |
428870ff BB |
2127 | static void |
2128 | spa_activate_log(spa_t *spa) | |
2129 | { | |
2130 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 2131 | |
428870ff BB |
2132 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
2133 | ||
1c27024e | 2134 | for (int c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
2135 | vdev_t *tvd = rvd->vdev_child[c]; |
2136 | metaslab_group_t *mg = tvd->vdev_mg; | |
2137 | ||
2138 | if (tvd->vdev_islog) | |
2139 | metaslab_group_activate(mg); | |
34dc7c2f | 2140 | } |
428870ff | 2141 | } |
34dc7c2f | 2142 | |
428870ff | 2143 | int |
a1d477c2 | 2144 | spa_reset_logs(spa_t *spa) |
428870ff | 2145 | { |
13fe0198 | 2146 | int error; |
9babb374 | 2147 | |
a1d477c2 | 2148 | error = dmu_objset_find(spa_name(spa), zil_reset, |
13fe0198 MA |
2149 | NULL, DS_FIND_CHILDREN); |
2150 | if (error == 0) { | |
428870ff BB |
2151 | /* |
2152 | * We successfully offlined the log device, sync out the | |
2153 | * current txg so that the "stubby" block can be removed | |
2154 | * by zil_sync(). | |
2155 | */ | |
2156 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
2157 | } | |
2158 | return (error); | |
2159 | } | |
34dc7c2f | 2160 | |
428870ff BB |
2161 | static void |
2162 | spa_aux_check_removed(spa_aux_vdev_t *sav) | |
2163 | { | |
1c27024e | 2164 | for (int i = 0; i < sav->sav_count; i++) |
428870ff BB |
2165 | spa_check_removed(sav->sav_vdevs[i]); |
2166 | } | |
34dc7c2f | 2167 | |
428870ff BB |
2168 | void |
2169 | spa_claim_notify(zio_t *zio) | |
2170 | { | |
2171 | spa_t *spa = zio->io_spa; | |
34dc7c2f | 2172 | |
428870ff BB |
2173 | if (zio->io_error) |
2174 | return; | |
34dc7c2f | 2175 | |
428870ff BB |
2176 | mutex_enter(&spa->spa_props_lock); /* any mutex will do */ |
2177 | if (spa->spa_claim_max_txg < zio->io_bp->blk_birth) | |
2178 | spa->spa_claim_max_txg = zio->io_bp->blk_birth; | |
2179 | mutex_exit(&spa->spa_props_lock); | |
2180 | } | |
34dc7c2f | 2181 | |
428870ff BB |
2182 | typedef struct spa_load_error { |
2183 | uint64_t sle_meta_count; | |
2184 | uint64_t sle_data_count; | |
2185 | } spa_load_error_t; | |
34dc7c2f | 2186 | |
428870ff BB |
2187 | static void |
2188 | spa_load_verify_done(zio_t *zio) | |
2189 | { | |
2190 | blkptr_t *bp = zio->io_bp; | |
2191 | spa_load_error_t *sle = zio->io_private; | |
2192 | dmu_object_type_t type = BP_GET_TYPE(bp); | |
2193 | int error = zio->io_error; | |
dea377c0 | 2194 | spa_t *spa = zio->io_spa; |
34dc7c2f | 2195 | |
a6255b7f | 2196 | abd_free(zio->io_abd); |
428870ff | 2197 | if (error) { |
9ae529ec | 2198 | if ((BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)) && |
428870ff | 2199 | type != DMU_OT_INTENT_LOG) |
bc89ac84 | 2200 | atomic_inc_64(&sle->sle_meta_count); |
428870ff | 2201 | else |
bc89ac84 | 2202 | atomic_inc_64(&sle->sle_data_count); |
34dc7c2f | 2203 | } |
dea377c0 MA |
2204 | |
2205 | mutex_enter(&spa->spa_scrub_lock); | |
c8242a96 | 2206 | spa->spa_load_verify_bytes -= BP_GET_PSIZE(bp); |
dea377c0 MA |
2207 | cv_broadcast(&spa->spa_scrub_io_cv); |
2208 | mutex_exit(&spa->spa_scrub_lock); | |
428870ff | 2209 | } |
34dc7c2f | 2210 | |
dea377c0 | 2211 | /* |
e1cfd73f | 2212 | * Maximum number of inflight bytes is the log2 fraction of the arc size. |
c8242a96 | 2213 | * By default, we set it to 1/16th of the arc. |
dea377c0 | 2214 | */ |
c8242a96 | 2215 | int spa_load_verify_shift = 4; |
dea377c0 MA |
2216 | int spa_load_verify_metadata = B_TRUE; |
2217 | int spa_load_verify_data = B_TRUE; | |
2218 | ||
428870ff BB |
2219 | /*ARGSUSED*/ |
2220 | static int | |
2221 | spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, | |
5dbd68a3 | 2222 | const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) |
428870ff | 2223 | { |
30af21b0 PD |
2224 | if (zb->zb_level == ZB_DNODE_LEVEL || BP_IS_HOLE(bp) || |
2225 | BP_IS_EMBEDDED(bp) || BP_IS_REDACTED(bp)) | |
dea377c0 MA |
2226 | return (0); |
2227 | /* | |
2228 | * Note: normally this routine will not be called if | |
2229 | * spa_load_verify_metadata is not set. However, it may be useful | |
2230 | * to manually set the flag after the traversal has begun. | |
2231 | */ | |
2232 | if (!spa_load_verify_metadata) | |
2233 | return (0); | |
a6255b7f | 2234 | if (!BP_IS_METADATA(bp) && !spa_load_verify_data) |
dea377c0 MA |
2235 | return (0); |
2236 | ||
1e527162 GW |
2237 | uint64_t maxinflight_bytes = |
2238 | arc_target_bytes() >> spa_load_verify_shift; | |
1c27024e DB |
2239 | zio_t *rio = arg; |
2240 | size_t size = BP_GET_PSIZE(bp); | |
dea377c0 MA |
2241 | |
2242 | mutex_enter(&spa->spa_scrub_lock); | |
c8242a96 | 2243 | while (spa->spa_load_verify_bytes >= maxinflight_bytes) |
dea377c0 | 2244 | cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); |
c8242a96 | 2245 | spa->spa_load_verify_bytes += size; |
dea377c0 MA |
2246 | mutex_exit(&spa->spa_scrub_lock); |
2247 | ||
a6255b7f | 2248 | zio_nowait(zio_read(rio, spa, bp, abd_alloc_for_io(size, B_FALSE), size, |
dea377c0 MA |
2249 | spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB, |
2250 | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL | | |
2251 | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb)); | |
428870ff BB |
2252 | return (0); |
2253 | } | |
34dc7c2f | 2254 | |
d1d19c78 PD |
2255 | /* ARGSUSED */ |
2256 | int | |
2257 | verify_dataset_name_len(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg) | |
2258 | { | |
2259 | if (dsl_dataset_namelen(ds) >= ZFS_MAX_DATASET_NAME_LEN) | |
2260 | return (SET_ERROR(ENAMETOOLONG)); | |
2261 | ||
2262 | return (0); | |
2263 | } | |
2264 | ||
428870ff BB |
2265 | static int |
2266 | spa_load_verify(spa_t *spa) | |
2267 | { | |
2268 | zio_t *rio; | |
2269 | spa_load_error_t sle = { 0 }; | |
8a393be3 | 2270 | zpool_load_policy_t policy; |
428870ff | 2271 | boolean_t verify_ok = B_FALSE; |
dea377c0 | 2272 | int error = 0; |
34dc7c2f | 2273 | |
8a393be3 | 2274 | zpool_get_load_policy(spa->spa_config, &policy); |
34dc7c2f | 2275 | |
8a393be3 | 2276 | if (policy.zlp_rewind & ZPOOL_NEVER_REWIND) |
428870ff | 2277 | return (0); |
34dc7c2f | 2278 | |
d1d19c78 PD |
2279 | dsl_pool_config_enter(spa->spa_dsl_pool, FTAG); |
2280 | error = dmu_objset_find_dp(spa->spa_dsl_pool, | |
2281 | spa->spa_dsl_pool->dp_root_dir_obj, verify_dataset_name_len, NULL, | |
2282 | DS_FIND_CHILDREN); | |
2283 | dsl_pool_config_exit(spa->spa_dsl_pool, FTAG); | |
2284 | if (error != 0) | |
2285 | return (error); | |
2286 | ||
428870ff BB |
2287 | rio = zio_root(spa, NULL, &sle, |
2288 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
34dc7c2f | 2289 | |
dea377c0 | 2290 | if (spa_load_verify_metadata) { |
4a0ee12a PZ |
2291 | if (spa->spa_extreme_rewind) { |
2292 | spa_load_note(spa, "performing a complete scan of the " | |
2293 | "pool since extreme rewind is on. This may take " | |
2294 | "a very long time.\n (spa_load_verify_data=%u, " | |
2295 | "spa_load_verify_metadata=%u)", | |
2296 | spa_load_verify_data, spa_load_verify_metadata); | |
2297 | } | |
c8242a96 | 2298 | |
dea377c0 | 2299 | error = traverse_pool(spa, spa->spa_verify_min_txg, |
b5256303 TC |
2300 | TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | |
2301 | TRAVERSE_NO_DECRYPT, spa_load_verify_cb, rio); | |
dea377c0 | 2302 | } |
428870ff BB |
2303 | |
2304 | (void) zio_wait(rio); | |
c8242a96 | 2305 | ASSERT0(spa->spa_load_verify_bytes); |
428870ff BB |
2306 | |
2307 | spa->spa_load_meta_errors = sle.sle_meta_count; | |
2308 | spa->spa_load_data_errors = sle.sle_data_count; | |
2309 | ||
afd2f7b7 PZ |
2310 | if (sle.sle_meta_count != 0 || sle.sle_data_count != 0) { |
2311 | spa_load_note(spa, "spa_load_verify found %llu metadata errors " | |
2312 | "and %llu data errors", (u_longlong_t)sle.sle_meta_count, | |
2313 | (u_longlong_t)sle.sle_data_count); | |
2314 | } | |
2315 | ||
2316 | if (spa_load_verify_dryrun || | |
8a393be3 PZ |
2317 | (!error && sle.sle_meta_count <= policy.zlp_maxmeta && |
2318 | sle.sle_data_count <= policy.zlp_maxdata)) { | |
572e2857 BB |
2319 | int64_t loss = 0; |
2320 | ||
428870ff BB |
2321 | verify_ok = B_TRUE; |
2322 | spa->spa_load_txg = spa->spa_uberblock.ub_txg; | |
2323 | spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp; | |
572e2857 BB |
2324 | |
2325 | loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts; | |
2326 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
2327 | ZPOOL_CONFIG_LOAD_TIME, spa->spa_load_txg_ts) == 0); | |
2328 | VERIFY(nvlist_add_int64(spa->spa_load_info, | |
2329 | ZPOOL_CONFIG_REWIND_TIME, loss) == 0); | |
2330 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
2331 | ZPOOL_CONFIG_LOAD_DATA_ERRORS, sle.sle_data_count) == 0); | |
428870ff BB |
2332 | } else { |
2333 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; | |
2334 | } | |
2335 | ||
afd2f7b7 PZ |
2336 | if (spa_load_verify_dryrun) |
2337 | return (0); | |
2338 | ||
428870ff BB |
2339 | if (error) { |
2340 | if (error != ENXIO && error != EIO) | |
2e528b49 | 2341 | error = SET_ERROR(EIO); |
428870ff BB |
2342 | return (error); |
2343 | } | |
2344 | ||
2345 | return (verify_ok ? 0 : EIO); | |
2346 | } | |
2347 | ||
2348 | /* | |
2349 | * Find a value in the pool props object. | |
2350 | */ | |
2351 | static void | |
2352 | spa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val) | |
2353 | { | |
2354 | (void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object, | |
2355 | zpool_prop_to_name(prop), sizeof (uint64_t), 1, val); | |
2356 | } | |
2357 | ||
2358 | /* | |
2359 | * Find a value in the pool directory object. | |
2360 | */ | |
2361 | static int | |
4a0ee12a | 2362 | spa_dir_prop(spa_t *spa, const char *name, uint64_t *val, boolean_t log_enoent) |
428870ff | 2363 | { |
4a0ee12a PZ |
2364 | int error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, |
2365 | name, sizeof (uint64_t), 1, val); | |
2366 | ||
2367 | if (error != 0 && (error != ENOENT || log_enoent)) { | |
2368 | spa_load_failed(spa, "couldn't get '%s' value in MOS directory " | |
2369 | "[error=%d]", name, error); | |
2370 | } | |
2371 | ||
2372 | return (error); | |
428870ff BB |
2373 | } |
2374 | ||
2375 | static int | |
2376 | spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err) | |
2377 | { | |
2378 | vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux); | |
a1d477c2 | 2379 | return (SET_ERROR(err)); |
428870ff BB |
2380 | } |
2381 | ||
37f03da8 SH |
2382 | boolean_t |
2383 | spa_livelist_delete_check(spa_t *spa) | |
2384 | { | |
2385 | return (spa->spa_livelists_to_delete != 0); | |
2386 | } | |
2387 | ||
2388 | /* ARGSUSED */ | |
2389 | static boolean_t | |
2390 | spa_livelist_delete_cb_check(void *arg, zthr_t *z) | |
2391 | { | |
2392 | spa_t *spa = arg; | |
2393 | return (spa_livelist_delete_check(spa)); | |
2394 | } | |
2395 | ||
2396 | static int | |
2397 | delete_blkptr_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
2398 | { | |
2399 | spa_t *spa = arg; | |
2400 | zio_free(spa, tx->tx_txg, bp); | |
2401 | dsl_dir_diduse_space(tx->tx_pool->dp_free_dir, DD_USED_HEAD, | |
2402 | -bp_get_dsize_sync(spa, bp), | |
2403 | -BP_GET_PSIZE(bp), -BP_GET_UCSIZE(bp), tx); | |
2404 | return (0); | |
2405 | } | |
2406 | ||
2407 | static int | |
2408 | dsl_get_next_livelist_obj(objset_t *os, uint64_t zap_obj, uint64_t *llp) | |
2409 | { | |
2410 | int err; | |
2411 | zap_cursor_t zc; | |
2412 | zap_attribute_t za; | |
2413 | zap_cursor_init(&zc, os, zap_obj); | |
2414 | err = zap_cursor_retrieve(&zc, &za); | |
2415 | zap_cursor_fini(&zc); | |
2416 | if (err == 0) | |
2417 | *llp = za.za_first_integer; | |
2418 | return (err); | |
2419 | } | |
2420 | ||
2421 | /* | |
2422 | * Components of livelist deletion that must be performed in syncing | |
2423 | * context: freeing block pointers and updating the pool-wide data | |
2424 | * structures to indicate how much work is left to do | |
2425 | */ | |
2426 | typedef struct sublist_delete_arg { | |
2427 | spa_t *spa; | |
2428 | dsl_deadlist_t *ll; | |
2429 | uint64_t key; | |
2430 | bplist_t *to_free; | |
2431 | } sublist_delete_arg_t; | |
2432 | ||
2433 | static void | |
2434 | sublist_delete_sync(void *arg, dmu_tx_t *tx) | |
2435 | { | |
2436 | sublist_delete_arg_t *sda = arg; | |
2437 | spa_t *spa = sda->spa; | |
2438 | dsl_deadlist_t *ll = sda->ll; | |
2439 | uint64_t key = sda->key; | |
2440 | bplist_t *to_free = sda->to_free; | |
2441 | ||
2442 | bplist_iterate(to_free, delete_blkptr_cb, spa, tx); | |
2443 | dsl_deadlist_remove_entry(ll, key, tx); | |
2444 | } | |
2445 | ||
2446 | typedef struct livelist_delete_arg { | |
2447 | spa_t *spa; | |
2448 | uint64_t ll_obj; | |
2449 | uint64_t zap_obj; | |
2450 | } livelist_delete_arg_t; | |
2451 | ||
2452 | static void | |
2453 | livelist_delete_sync(void *arg, dmu_tx_t *tx) | |
2454 | { | |
2455 | livelist_delete_arg_t *lda = arg; | |
2456 | spa_t *spa = lda->spa; | |
2457 | uint64_t ll_obj = lda->ll_obj; | |
2458 | uint64_t zap_obj = lda->zap_obj; | |
2459 | objset_t *mos = spa->spa_meta_objset; | |
2460 | uint64_t count; | |
2461 | ||
2462 | /* free the livelist and decrement the feature count */ | |
2463 | VERIFY0(zap_remove_int(mos, zap_obj, ll_obj, tx)); | |
2464 | dsl_deadlist_free(mos, ll_obj, tx); | |
2465 | spa_feature_decr(spa, SPA_FEATURE_LIVELIST, tx); | |
2466 | VERIFY0(zap_count(mos, zap_obj, &count)); | |
2467 | if (count == 0) { | |
2468 | /* no more livelists to delete */ | |
2469 | VERIFY0(zap_remove(mos, DMU_POOL_DIRECTORY_OBJECT, | |
2470 | DMU_POOL_DELETED_CLONES, tx)); | |
2471 | VERIFY0(zap_destroy(mos, zap_obj, tx)); | |
2472 | spa->spa_livelists_to_delete = 0; | |
2473 | } | |
2474 | } | |
2475 | ||
2476 | /* | |
2477 | * Load in the value for the livelist to be removed and open it. Then, | |
2478 | * load its first sublist and determine which block pointers should actually | |
2479 | * be freed. Then, call a synctask which performs the actual frees and updates | |
2480 | * the pool-wide livelist data. | |
2481 | */ | |
2482 | /* ARGSUSED */ | |
2483 | void | |
2484 | spa_livelist_delete_cb(void *arg, zthr_t *z) | |
2485 | { | |
2486 | spa_t *spa = arg; | |
2487 | uint64_t ll_obj = 0, count; | |
2488 | objset_t *mos = spa->spa_meta_objset; | |
2489 | uint64_t zap_obj = spa->spa_livelists_to_delete; | |
2490 | /* | |
2491 | * Determine the next livelist to delete. This function should only | |
2492 | * be called if there is at least one deleted clone. | |
2493 | */ | |
2494 | VERIFY0(dsl_get_next_livelist_obj(mos, zap_obj, &ll_obj)); | |
2495 | VERIFY0(zap_count(mos, ll_obj, &count)); | |
2496 | if (count > 0) { | |
2497 | dsl_deadlist_t ll = { 0 }; | |
2498 | dsl_deadlist_entry_t *dle; | |
2499 | bplist_t to_free; | |
2500 | dsl_deadlist_open(&ll, mos, ll_obj); | |
2501 | dle = dsl_deadlist_first(&ll); | |
2502 | ASSERT3P(dle, !=, NULL); | |
2503 | bplist_create(&to_free); | |
2504 | int err = dsl_process_sub_livelist(&dle->dle_bpobj, &to_free, | |
2505 | z, NULL); | |
2506 | if (err == 0) { | |
2507 | sublist_delete_arg_t sync_arg = { | |
2508 | .spa = spa, | |
2509 | .ll = &ll, | |
2510 | .key = dle->dle_mintxg, | |
2511 | .to_free = &to_free | |
2512 | }; | |
2513 | zfs_dbgmsg("deleting sublist (id %llu) from" | |
2514 | " livelist %llu, %d remaining", | |
2515 | dle->dle_bpobj.bpo_object, ll_obj, count - 1); | |
2516 | VERIFY0(dsl_sync_task(spa_name(spa), NULL, | |
2517 | sublist_delete_sync, &sync_arg, 0, | |
2518 | ZFS_SPACE_CHECK_DESTROY)); | |
2519 | } else { | |
2520 | ASSERT(err == EINTR); | |
2521 | } | |
2522 | bplist_clear(&to_free); | |
2523 | bplist_destroy(&to_free); | |
2524 | dsl_deadlist_close(&ll); | |
2525 | } else { | |
2526 | livelist_delete_arg_t sync_arg = { | |
2527 | .spa = spa, | |
2528 | .ll_obj = ll_obj, | |
2529 | .zap_obj = zap_obj | |
2530 | }; | |
2531 | zfs_dbgmsg("deletion of livelist %llu completed", ll_obj); | |
2532 | VERIFY0(dsl_sync_task(spa_name(spa), NULL, livelist_delete_sync, | |
2533 | &sync_arg, 0, ZFS_SPACE_CHECK_DESTROY)); | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | void | |
2538 | spa_start_livelist_destroy_thread(spa_t *spa) | |
2539 | { | |
2540 | ASSERT3P(spa->spa_livelist_delete_zthr, ==, NULL); | |
2541 | spa->spa_livelist_delete_zthr = zthr_create( | |
2542 | spa_livelist_delete_cb_check, spa_livelist_delete_cb, spa); | |
2543 | } | |
2544 | ||
2545 | typedef struct livelist_new_arg { | |
2546 | bplist_t *allocs; | |
2547 | bplist_t *frees; | |
2548 | } livelist_new_arg_t; | |
2549 | ||
2550 | static int | |
2551 | livelist_track_new_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, | |
2552 | dmu_tx_t *tx) | |
2553 | { | |
2554 | ASSERT(tx == NULL); | |
2555 | livelist_new_arg_t *lna = arg; | |
2556 | if (bp_freed) { | |
2557 | bplist_append(lna->frees, bp); | |
2558 | } else { | |
2559 | bplist_append(lna->allocs, bp); | |
2560 | zfs_livelist_condense_new_alloc++; | |
2561 | } | |
2562 | return (0); | |
2563 | } | |
2564 | ||
2565 | typedef struct livelist_condense_arg { | |
2566 | spa_t *spa; | |
2567 | bplist_t to_keep; | |
2568 | uint64_t first_size; | |
2569 | uint64_t next_size; | |
2570 | } livelist_condense_arg_t; | |
2571 | ||
2572 | static void | |
2573 | spa_livelist_condense_sync(void *arg, dmu_tx_t *tx) | |
2574 | { | |
2575 | livelist_condense_arg_t *lca = arg; | |
2576 | spa_t *spa = lca->spa; | |
2577 | bplist_t new_frees; | |
2578 | dsl_dataset_t *ds = spa->spa_to_condense.ds; | |
2579 | ||
2580 | /* Have we been cancelled? */ | |
2581 | if (spa->spa_to_condense.cancelled) { | |
2582 | zfs_livelist_condense_sync_cancel++; | |
2583 | goto out; | |
2584 | } | |
2585 | ||
2586 | dsl_deadlist_entry_t *first = spa->spa_to_condense.first; | |
2587 | dsl_deadlist_entry_t *next = spa->spa_to_condense.next; | |
2588 | dsl_deadlist_t *ll = &ds->ds_dir->dd_livelist; | |
2589 | ||
2590 | /* | |
2591 | * It's possible that the livelist was changed while the zthr was | |
2592 | * running. Therefore, we need to check for new blkptrs in the two | |
2593 | * entries being condensed and continue to track them in the livelist. | |
2594 | * Because of the way we handle remapped blkptrs (see dbuf_remap_impl), | |
2595 | * it's possible that the newly added blkptrs are FREEs or ALLOCs so | |
2596 | * we need to sort them into two different bplists. | |
2597 | */ | |
2598 | uint64_t first_obj = first->dle_bpobj.bpo_object; | |
2599 | uint64_t next_obj = next->dle_bpobj.bpo_object; | |
2600 | uint64_t cur_first_size = first->dle_bpobj.bpo_phys->bpo_num_blkptrs; | |
2601 | uint64_t cur_next_size = next->dle_bpobj.bpo_phys->bpo_num_blkptrs; | |
2602 | ||
2603 | bplist_create(&new_frees); | |
2604 | livelist_new_arg_t new_bps = { | |
2605 | .allocs = &lca->to_keep, | |
2606 | .frees = &new_frees, | |
2607 | }; | |
2608 | ||
2609 | if (cur_first_size > lca->first_size) { | |
2610 | VERIFY0(livelist_bpobj_iterate_from_nofree(&first->dle_bpobj, | |
2611 | livelist_track_new_cb, &new_bps, lca->first_size)); | |
2612 | } | |
2613 | if (cur_next_size > lca->next_size) { | |
2614 | VERIFY0(livelist_bpobj_iterate_from_nofree(&next->dle_bpobj, | |
2615 | livelist_track_new_cb, &new_bps, lca->next_size)); | |
2616 | } | |
2617 | ||
2618 | dsl_deadlist_clear_entry(first, ll, tx); | |
2619 | ASSERT(bpobj_is_empty(&first->dle_bpobj)); | |
2620 | dsl_deadlist_remove_entry(ll, next->dle_mintxg, tx); | |
2621 | ||
2622 | bplist_iterate(&lca->to_keep, dsl_deadlist_insert_alloc_cb, ll, tx); | |
2623 | bplist_iterate(&new_frees, dsl_deadlist_insert_free_cb, ll, tx); | |
2624 | bplist_destroy(&new_frees); | |
2625 | ||
2626 | char dsname[ZFS_MAX_DATASET_NAME_LEN]; | |
2627 | dsl_dataset_name(ds, dsname); | |
2628 | zfs_dbgmsg("txg %llu condensing livelist of %s (id %llu), bpobj %llu " | |
2629 | "(%llu blkptrs) and bpobj %llu (%llu blkptrs) -> bpobj %llu " | |
2630 | "(%llu blkptrs)", tx->tx_txg, dsname, ds->ds_object, first_obj, | |
2631 | cur_first_size, next_obj, cur_next_size, | |
2632 | first->dle_bpobj.bpo_object, | |
2633 | first->dle_bpobj.bpo_phys->bpo_num_blkptrs); | |
2634 | out: | |
2635 | dmu_buf_rele(ds->ds_dbuf, spa); | |
2636 | spa->spa_to_condense.ds = NULL; | |
2637 | bplist_clear(&lca->to_keep); | |
2638 | bplist_destroy(&lca->to_keep); | |
2639 | kmem_free(lca, sizeof (livelist_condense_arg_t)); | |
2640 | spa->spa_to_condense.syncing = B_FALSE; | |
2641 | } | |
2642 | ||
2643 | void | |
2644 | spa_livelist_condense_cb(void *arg, zthr_t *t) | |
2645 | { | |
2646 | while (zfs_livelist_condense_zthr_pause && | |
2647 | !(zthr_has_waiters(t) || zthr_iscancelled(t))) | |
2648 | delay(1); | |
2649 | ||
2650 | spa_t *spa = arg; | |
2651 | dsl_deadlist_entry_t *first = spa->spa_to_condense.first; | |
2652 | dsl_deadlist_entry_t *next = spa->spa_to_condense.next; | |
2653 | uint64_t first_size, next_size; | |
2654 | ||
2655 | livelist_condense_arg_t *lca = | |
2656 | kmem_alloc(sizeof (livelist_condense_arg_t), KM_SLEEP); | |
2657 | bplist_create(&lca->to_keep); | |
2658 | ||
2659 | /* | |
2660 | * Process the livelists (matching FREEs and ALLOCs) in open context | |
2661 | * so we have minimal work in syncing context to condense. | |
2662 | * | |
2663 | * We save bpobj sizes (first_size and next_size) to use later in | |
2664 | * syncing context to determine if entries were added to these sublists | |
2665 | * while in open context. This is possible because the clone is still | |
2666 | * active and open for normal writes and we want to make sure the new, | |
2667 | * unprocessed blockpointers are inserted into the livelist normally. | |
2668 | * | |
2669 | * Note that dsl_process_sub_livelist() both stores the size number of | |
2670 | * blockpointers and iterates over them while the bpobj's lock held, so | |
2671 | * the sizes returned to us are consistent which what was actually | |
2672 | * processed. | |
2673 | */ | |
2674 | int err = dsl_process_sub_livelist(&first->dle_bpobj, &lca->to_keep, t, | |
2675 | &first_size); | |
2676 | if (err == 0) | |
2677 | err = dsl_process_sub_livelist(&next->dle_bpobj, &lca->to_keep, | |
2678 | t, &next_size); | |
2679 | ||
2680 | if (err == 0) { | |
2681 | while (zfs_livelist_condense_sync_pause && | |
2682 | !(zthr_has_waiters(t) || zthr_iscancelled(t))) | |
2683 | delay(1); | |
2684 | ||
2685 | dmu_tx_t *tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
2686 | dmu_tx_mark_netfree(tx); | |
2687 | dmu_tx_hold_space(tx, 1); | |
2688 | err = dmu_tx_assign(tx, TXG_NOWAIT | TXG_NOTHROTTLE); | |
2689 | if (err == 0) { | |
2690 | /* | |
2691 | * Prevent the condense zthr restarting before | |
2692 | * the synctask completes. | |
2693 | */ | |
2694 | spa->spa_to_condense.syncing = B_TRUE; | |
2695 | lca->spa = spa; | |
2696 | lca->first_size = first_size; | |
2697 | lca->next_size = next_size; | |
2698 | dsl_sync_task_nowait(spa_get_dsl(spa), | |
2699 | spa_livelist_condense_sync, lca, 0, | |
2700 | ZFS_SPACE_CHECK_NONE, tx); | |
2701 | dmu_tx_commit(tx); | |
2702 | return; | |
2703 | } | |
2704 | } | |
2705 | /* | |
2706 | * Condensing can not continue: either it was externally stopped or | |
2707 | * we were unable to assign to a tx because the pool has run out of | |
2708 | * space. In the second case, we'll just end up trying to condense | |
2709 | * again in a later txg. | |
2710 | */ | |
2711 | ASSERT(err != 0); | |
2712 | bplist_clear(&lca->to_keep); | |
2713 | bplist_destroy(&lca->to_keep); | |
2714 | kmem_free(lca, sizeof (livelist_condense_arg_t)); | |
2715 | dmu_buf_rele(spa->spa_to_condense.ds->ds_dbuf, spa); | |
2716 | spa->spa_to_condense.ds = NULL; | |
2717 | if (err == EINTR) | |
2718 | zfs_livelist_condense_zthr_cancel++; | |
2719 | } | |
2720 | ||
2721 | /* ARGSUSED */ | |
2722 | /* | |
2723 | * Check that there is something to condense but that a condense is not | |
2724 | * already in progress and that condensing has not been cancelled. | |
2725 | */ | |
2726 | static boolean_t | |
2727 | spa_livelist_condense_cb_check(void *arg, zthr_t *z) | |
2728 | { | |
2729 | spa_t *spa = arg; | |
2730 | if ((spa->spa_to_condense.ds != NULL) && | |
2731 | (spa->spa_to_condense.syncing == B_FALSE) && | |
2732 | (spa->spa_to_condense.cancelled == B_FALSE)) { | |
2733 | return (B_TRUE); | |
2734 | } | |
2735 | return (B_FALSE); | |
2736 | } | |
2737 | ||
2738 | void | |
2739 | spa_start_livelist_condensing_thread(spa_t *spa) | |
2740 | { | |
2741 | spa->spa_to_condense.ds = NULL; | |
2742 | spa->spa_to_condense.first = NULL; | |
2743 | spa->spa_to_condense.next = NULL; | |
2744 | spa->spa_to_condense.syncing = B_FALSE; | |
2745 | spa->spa_to_condense.cancelled = B_FALSE; | |
2746 | ||
2747 | ASSERT3P(spa->spa_livelist_condense_zthr, ==, NULL); | |
2748 | spa->spa_livelist_condense_zthr = zthr_create( | |
2749 | spa_livelist_condense_cb_check, spa_livelist_condense_cb, spa); | |
2750 | } | |
2751 | ||
9d5b5245 SD |
2752 | static void |
2753 | spa_spawn_aux_threads(spa_t *spa) | |
2754 | { | |
2755 | ASSERT(spa_writeable(spa)); | |
2756 | ||
2757 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
2758 | ||
2759 | spa_start_indirect_condensing_thread(spa); | |
37f03da8 SH |
2760 | spa_start_livelist_destroy_thread(spa); |
2761 | spa_start_livelist_condensing_thread(spa); | |
d2734cce SD |
2762 | |
2763 | ASSERT3P(spa->spa_checkpoint_discard_zthr, ==, NULL); | |
2764 | spa->spa_checkpoint_discard_zthr = | |
2765 | zthr_create(spa_checkpoint_discard_thread_check, | |
2766 | spa_checkpoint_discard_thread, spa); | |
9d5b5245 SD |
2767 | } |
2768 | ||
428870ff BB |
2769 | /* |
2770 | * Fix up config after a partly-completed split. This is done with the | |
2771 | * ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off | |
2772 | * pool have that entry in their config, but only the splitting one contains | |
2773 | * a list of all the guids of the vdevs that are being split off. | |
2774 | * | |
2775 | * This function determines what to do with that list: either rejoin | |
2776 | * all the disks to the pool, or complete the splitting process. To attempt | |
2777 | * the rejoin, each disk that is offlined is marked online again, and | |
2778 | * we do a reopen() call. If the vdev label for every disk that was | |
2779 | * marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL) | |
2780 | * then we call vdev_split() on each disk, and complete the split. | |
2781 | * | |
2782 | * Otherwise we leave the config alone, with all the vdevs in place in | |
2783 | * the original pool. | |
2784 | */ | |
2785 | static void | |
2786 | spa_try_repair(spa_t *spa, nvlist_t *config) | |
2787 | { | |
2788 | uint_t extracted; | |
2789 | uint64_t *glist; | |
2790 | uint_t i, gcount; | |
2791 | nvlist_t *nvl; | |
2792 | vdev_t **vd; | |
2793 | boolean_t attempt_reopen; | |
2794 | ||
2795 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0) | |
2796 | return; | |
2797 | ||
2798 | /* check that the config is complete */ | |
2799 | if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, | |
2800 | &glist, &gcount) != 0) | |
2801 | return; | |
2802 | ||
79c76d5b | 2803 | vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_SLEEP); |
428870ff BB |
2804 | |
2805 | /* attempt to online all the vdevs & validate */ | |
2806 | attempt_reopen = B_TRUE; | |
2807 | for (i = 0; i < gcount; i++) { | |
2808 | if (glist[i] == 0) /* vdev is hole */ | |
2809 | continue; | |
2810 | ||
2811 | vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE); | |
2812 | if (vd[i] == NULL) { | |
2813 | /* | |
2814 | * Don't bother attempting to reopen the disks; | |
2815 | * just do the split. | |
2816 | */ | |
2817 | attempt_reopen = B_FALSE; | |
2818 | } else { | |
2819 | /* attempt to re-online it */ | |
2820 | vd[i]->vdev_offline = B_FALSE; | |
2821 | } | |
2822 | } | |
2823 | ||
2824 | if (attempt_reopen) { | |
2825 | vdev_reopen(spa->spa_root_vdev); | |
2826 | ||
2827 | /* check each device to see what state it's in */ | |
2828 | for (extracted = 0, i = 0; i < gcount; i++) { | |
2829 | if (vd[i] != NULL && | |
2830 | vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL) | |
2831 | break; | |
2832 | ++extracted; | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | /* | |
2837 | * If every disk has been moved to the new pool, or if we never | |
2838 | * even attempted to look at them, then we split them off for | |
2839 | * good. | |
2840 | */ | |
2841 | if (!attempt_reopen || gcount == extracted) { | |
2842 | for (i = 0; i < gcount; i++) | |
2843 | if (vd[i] != NULL) | |
2844 | vdev_split(vd[i]); | |
2845 | vdev_reopen(spa->spa_root_vdev); | |
2846 | } | |
2847 | ||
2848 | kmem_free(vd, gcount * sizeof (vdev_t *)); | |
2849 | } | |
2850 | ||
2851 | static int | |
6cb8e530 | 2852 | spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type) |
428870ff | 2853 | { |
428870ff BB |
2854 | char *ereport = FM_EREPORT_ZFS_POOL; |
2855 | int error; | |
428870ff | 2856 | |
6cb8e530 | 2857 | spa->spa_load_state = state; |
ca95f70d OF |
2858 | (void) spa_import_progress_set_state(spa_guid(spa), |
2859 | spa_load_state(spa)); | |
9ae529ec | 2860 | |
6cb8e530 | 2861 | gethrestime(&spa->spa_loaded_ts); |
d2734cce | 2862 | error = spa_load_impl(spa, type, &ereport); |
428870ff | 2863 | |
0c66c32d JG |
2864 | /* |
2865 | * Don't count references from objsets that are already closed | |
2866 | * and are making their way through the eviction process. | |
2867 | */ | |
2868 | spa_evicting_os_wait(spa); | |
424fd7c3 | 2869 | spa->spa_minref = zfs_refcount_count(&spa->spa_refcount); |
572e2857 BB |
2870 | if (error) { |
2871 | if (error != EEXIST) { | |
2872 | spa->spa_loaded_ts.tv_sec = 0; | |
2873 | spa->spa_loaded_ts.tv_nsec = 0; | |
2874 | } | |
2875 | if (error != EBADF) { | |
b5256303 | 2876 | zfs_ereport_post(ereport, spa, NULL, NULL, NULL, 0, 0); |
572e2857 BB |
2877 | } |
2878 | } | |
428870ff BB |
2879 | spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE; |
2880 | spa->spa_ena = 0; | |
2881 | ||
ca95f70d OF |
2882 | (void) spa_import_progress_set_state(spa_guid(spa), |
2883 | spa_load_state(spa)); | |
2884 | ||
428870ff BB |
2885 | return (error); |
2886 | } | |
2887 | ||
33cf67cd | 2888 | #ifdef ZFS_DEBUG |
e0ab3ab5 JS |
2889 | /* |
2890 | * Count the number of per-vdev ZAPs associated with all of the vdevs in the | |
2891 | * vdev tree rooted in the given vd, and ensure that each ZAP is present in the | |
2892 | * spa's per-vdev ZAP list. | |
2893 | */ | |
2894 | static uint64_t | |
2895 | vdev_count_verify_zaps(vdev_t *vd) | |
2896 | { | |
2897 | spa_t *spa = vd->vdev_spa; | |
2898 | uint64_t total = 0; | |
e0ab3ab5 JS |
2899 | |
2900 | if (vd->vdev_top_zap != 0) { | |
2901 | total++; | |
2902 | ASSERT0(zap_lookup_int(spa->spa_meta_objset, | |
2903 | spa->spa_all_vdev_zaps, vd->vdev_top_zap)); | |
2904 | } | |
2905 | if (vd->vdev_leaf_zap != 0) { | |
2906 | total++; | |
2907 | ASSERT0(zap_lookup_int(spa->spa_meta_objset, | |
2908 | spa->spa_all_vdev_zaps, vd->vdev_leaf_zap)); | |
2909 | } | |
2910 | ||
1c27024e | 2911 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
2912 | total += vdev_count_verify_zaps(vd->vdev_child[i]); |
2913 | } | |
2914 | ||
2915 | return (total); | |
2916 | } | |
33cf67cd | 2917 | #endif |
e0ab3ab5 | 2918 | |
379ca9cf OF |
2919 | /* |
2920 | * Determine whether the activity check is required. | |
2921 | */ | |
2922 | static boolean_t | |
bbffb59e BB |
2923 | spa_activity_check_required(spa_t *spa, uberblock_t *ub, nvlist_t *label, |
2924 | nvlist_t *config) | |
379ca9cf OF |
2925 | { |
2926 | uint64_t state = 0; | |
2927 | uint64_t hostid = 0; | |
2928 | uint64_t tryconfig_txg = 0; | |
2929 | uint64_t tryconfig_timestamp = 0; | |
060f0226 | 2930 | uint16_t tryconfig_mmp_seq = 0; |
379ca9cf OF |
2931 | nvlist_t *nvinfo; |
2932 | ||
2933 | if (nvlist_exists(config, ZPOOL_CONFIG_LOAD_INFO)) { | |
2934 | nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO); | |
2935 | (void) nvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_MMP_TXG, | |
2936 | &tryconfig_txg); | |
2937 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
2938 | &tryconfig_timestamp); | |
060f0226 OF |
2939 | (void) nvlist_lookup_uint16(nvinfo, ZPOOL_CONFIG_MMP_SEQ, |
2940 | &tryconfig_mmp_seq); | |
379ca9cf OF |
2941 | } |
2942 | ||
2943 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE, &state); | |
379ca9cf OF |
2944 | |
2945 | /* | |
2946 | * Disable the MMP activity check - This is used by zdb which | |
2947 | * is intended to be used on potentially active pools. | |
2948 | */ | |
2949 | if (spa->spa_import_flags & ZFS_IMPORT_SKIP_MMP) | |
2950 | return (B_FALSE); | |
2951 | ||
2952 | /* | |
2953 | * Skip the activity check when the MMP feature is disabled. | |
2954 | */ | |
2955 | if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay == 0) | |
2956 | return (B_FALSE); | |
ca95f70d | 2957 | |
379ca9cf | 2958 | /* |
060f0226 OF |
2959 | * If the tryconfig_ values are nonzero, they are the results of an |
2960 | * earlier tryimport. If they all match the uberblock we just found, | |
2961 | * then the pool has not changed and we return false so we do not test | |
2962 | * a second time. | |
379ca9cf OF |
2963 | */ |
2964 | if (tryconfig_txg && tryconfig_txg == ub->ub_txg && | |
060f0226 OF |
2965 | tryconfig_timestamp && tryconfig_timestamp == ub->ub_timestamp && |
2966 | tryconfig_mmp_seq && tryconfig_mmp_seq == | |
2967 | (MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0)) | |
379ca9cf OF |
2968 | return (B_FALSE); |
2969 | ||
2970 | /* | |
2971 | * Allow the activity check to be skipped when importing the pool | |
bbffb59e BB |
2972 | * on the same host which last imported it. Since the hostid from |
2973 | * configuration may be stale use the one read from the label. | |
379ca9cf | 2974 | */ |
bbffb59e BB |
2975 | if (nvlist_exists(label, ZPOOL_CONFIG_HOSTID)) |
2976 | hostid = fnvlist_lookup_uint64(label, ZPOOL_CONFIG_HOSTID); | |
2977 | ||
25f06d67 | 2978 | if (hostid == spa_get_hostid(spa)) |
379ca9cf OF |
2979 | return (B_FALSE); |
2980 | ||
2981 | /* | |
2982 | * Skip the activity test when the pool was cleanly exported. | |
2983 | */ | |
2984 | if (state != POOL_STATE_ACTIVE) | |
2985 | return (B_FALSE); | |
2986 | ||
2987 | return (B_TRUE); | |
2988 | } | |
2989 | ||
060f0226 OF |
2990 | /* |
2991 | * Nanoseconds the activity check must watch for changes on-disk. | |
2992 | */ | |
2993 | static uint64_t | |
2994 | spa_activity_check_duration(spa_t *spa, uberblock_t *ub) | |
2995 | { | |
2996 | uint64_t import_intervals = MAX(zfs_multihost_import_intervals, 1); | |
2997 | uint64_t multihost_interval = MSEC2NSEC( | |
2998 | MMP_INTERVAL_OK(zfs_multihost_interval)); | |
2999 | uint64_t import_delay = MAX(NANOSEC, import_intervals * | |
3000 | multihost_interval); | |
3001 | ||
3002 | /* | |
3003 | * Local tunables determine a minimum duration except for the case | |
3004 | * where we know when the remote host will suspend the pool if MMP | |
3005 | * writes do not land. | |
3006 | * | |
3007 | * See Big Theory comment at the top of mmp.c for the reasoning behind | |
3008 | * these cases and times. | |
3009 | */ | |
3010 | ||
3011 | ASSERT(MMP_IMPORT_SAFETY_FACTOR >= 100); | |
3012 | ||
3013 | if (MMP_INTERVAL_VALID(ub) && MMP_FAIL_INT_VALID(ub) && | |
3014 | MMP_FAIL_INT(ub) > 0) { | |
3015 | ||
3016 | /* MMP on remote host will suspend pool after failed writes */ | |
3017 | import_delay = MMP_FAIL_INT(ub) * MSEC2NSEC(MMP_INTERVAL(ub)) * | |
3018 | MMP_IMPORT_SAFETY_FACTOR / 100; | |
3019 | ||
3020 | zfs_dbgmsg("fail_intvals>0 import_delay=%llu ub_mmp " | |
3021 | "mmp_fails=%llu ub_mmp mmp_interval=%llu " | |
3022 | "import_intervals=%u", import_delay, MMP_FAIL_INT(ub), | |
3023 | MMP_INTERVAL(ub), import_intervals); | |
3024 | ||
3025 | } else if (MMP_INTERVAL_VALID(ub) && MMP_FAIL_INT_VALID(ub) && | |
3026 | MMP_FAIL_INT(ub) == 0) { | |
3027 | ||
3028 | /* MMP on remote host will never suspend pool */ | |
3029 | import_delay = MAX(import_delay, (MSEC2NSEC(MMP_INTERVAL(ub)) + | |
3030 | ub->ub_mmp_delay) * import_intervals); | |
3031 | ||
3032 | zfs_dbgmsg("fail_intvals=0 import_delay=%llu ub_mmp " | |
3033 | "mmp_interval=%llu ub_mmp_delay=%llu " | |
3034 | "import_intervals=%u", import_delay, MMP_INTERVAL(ub), | |
3035 | ub->ub_mmp_delay, import_intervals); | |
3036 | ||
3037 | } else if (MMP_VALID(ub)) { | |
3038 | /* | |
e1cfd73f | 3039 | * zfs-0.7 compatibility case |
060f0226 OF |
3040 | */ |
3041 | ||
3042 | import_delay = MAX(import_delay, (multihost_interval + | |
3043 | ub->ub_mmp_delay) * import_intervals); | |
3044 | ||
3045 | zfs_dbgmsg("import_delay=%llu ub_mmp_delay=%llu " | |
3046 | "import_intervals=%u leaves=%u", import_delay, | |
3047 | ub->ub_mmp_delay, import_intervals, | |
3048 | vdev_count_leaves(spa)); | |
3049 | } else { | |
3050 | /* Using local tunings is the only reasonable option */ | |
3051 | zfs_dbgmsg("pool last imported on non-MMP aware " | |
3052 | "host using import_delay=%llu multihost_interval=%llu " | |
3053 | "import_intervals=%u", import_delay, multihost_interval, | |
3054 | import_intervals); | |
3055 | } | |
3056 | ||
3057 | return (import_delay); | |
3058 | } | |
3059 | ||
379ca9cf OF |
3060 | /* |
3061 | * Perform the import activity check. If the user canceled the import or | |
3062 | * we detected activity then fail. | |
3063 | */ | |
3064 | static int | |
3065 | spa_activity_check(spa_t *spa, uberblock_t *ub, nvlist_t *config) | |
3066 | { | |
379ca9cf OF |
3067 | uint64_t txg = ub->ub_txg; |
3068 | uint64_t timestamp = ub->ub_timestamp; | |
060f0226 OF |
3069 | uint64_t mmp_config = ub->ub_mmp_config; |
3070 | uint16_t mmp_seq = MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0; | |
3071 | uint64_t import_delay; | |
379ca9cf OF |
3072 | hrtime_t import_expire; |
3073 | nvlist_t *mmp_label = NULL; | |
3074 | vdev_t *rvd = spa->spa_root_vdev; | |
3075 | kcondvar_t cv; | |
3076 | kmutex_t mtx; | |
3077 | int error = 0; | |
3078 | ||
3079 | cv_init(&cv, NULL, CV_DEFAULT, NULL); | |
3080 | mutex_init(&mtx, NULL, MUTEX_DEFAULT, NULL); | |
3081 | mutex_enter(&mtx); | |
3082 | ||
3083 | /* | |
3084 | * If ZPOOL_CONFIG_MMP_TXG is present an activity check was performed | |
3085 | * during the earlier tryimport. If the txg recorded there is 0 then | |
3086 | * the pool is known to be active on another host. | |
3087 | * | |
060f0226 | 3088 | * Otherwise, the pool might be in use on another host. Check for |
379ca9cf OF |
3089 | * changes in the uberblocks on disk if necessary. |
3090 | */ | |
3091 | if (nvlist_exists(config, ZPOOL_CONFIG_LOAD_INFO)) { | |
3092 | nvlist_t *nvinfo = fnvlist_lookup_nvlist(config, | |
3093 | ZPOOL_CONFIG_LOAD_INFO); | |
3094 | ||
3095 | if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_TXG) && | |
3096 | fnvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_MMP_TXG) == 0) { | |
3097 | vdev_uberblock_load(rvd, ub, &mmp_label); | |
3098 | error = SET_ERROR(EREMOTEIO); | |
3099 | goto out; | |
3100 | } | |
3101 | } | |
3102 | ||
060f0226 | 3103 | import_delay = spa_activity_check_duration(spa, ub); |
533ea041 | 3104 | |
379ca9cf | 3105 | /* Add a small random factor in case of simultaneous imports (0-25%) */ |
ca95f70d OF |
3106 | import_delay += import_delay * spa_get_random(250) / 1000; |
3107 | ||
3108 | import_expire = gethrtime() + import_delay; | |
379ca9cf OF |
3109 | |
3110 | while (gethrtime() < import_expire) { | |
ca95f70d OF |
3111 | (void) spa_import_progress_set_mmp_check(spa_guid(spa), |
3112 | NSEC2SEC(import_expire - gethrtime())); | |
3113 | ||
379ca9cf OF |
3114 | vdev_uberblock_load(rvd, ub, &mmp_label); |
3115 | ||
060f0226 OF |
3116 | if (txg != ub->ub_txg || timestamp != ub->ub_timestamp || |
3117 | mmp_seq != (MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0)) { | |
3118 | zfs_dbgmsg("multihost activity detected " | |
3119 | "txg %llu ub_txg %llu " | |
3120 | "timestamp %llu ub_timestamp %llu " | |
3121 | "mmp_config %#llx ub_mmp_config %#llx", | |
3122 | txg, ub->ub_txg, timestamp, ub->ub_timestamp, | |
3123 | mmp_config, ub->ub_mmp_config); | |
3124 | ||
379ca9cf OF |
3125 | error = SET_ERROR(EREMOTEIO); |
3126 | break; | |
3127 | } | |
3128 | ||
3129 | if (mmp_label) { | |
3130 | nvlist_free(mmp_label); | |
3131 | mmp_label = NULL; | |
3132 | } | |
3133 | ||
3134 | error = cv_timedwait_sig(&cv, &mtx, ddi_get_lbolt() + hz); | |
3135 | if (error != -1) { | |
3136 | error = SET_ERROR(EINTR); | |
3137 | break; | |
3138 | } | |
3139 | error = 0; | |
3140 | } | |
3141 | ||
3142 | out: | |
3143 | mutex_exit(&mtx); | |
3144 | mutex_destroy(&mtx); | |
3145 | cv_destroy(&cv); | |
3146 | ||
3147 | /* | |
3148 | * If the pool is determined to be active store the status in the | |
3149 | * spa->spa_load_info nvlist. If the remote hostname or hostid are | |
3150 | * available from configuration read from disk store them as well. | |
3151 | * This allows 'zpool import' to generate a more useful message. | |
3152 | * | |
3153 | * ZPOOL_CONFIG_MMP_STATE - observed pool status (mandatory) | |
3154 | * ZPOOL_CONFIG_MMP_HOSTNAME - hostname from the active pool | |
3155 | * ZPOOL_CONFIG_MMP_HOSTID - hostid from the active pool | |
3156 | */ | |
3157 | if (error == EREMOTEIO) { | |
3158 | char *hostname = "<unknown>"; | |
3159 | uint64_t hostid = 0; | |
3160 | ||
3161 | if (mmp_label) { | |
3162 | if (nvlist_exists(mmp_label, ZPOOL_CONFIG_HOSTNAME)) { | |
3163 | hostname = fnvlist_lookup_string(mmp_label, | |
3164 | ZPOOL_CONFIG_HOSTNAME); | |
3165 | fnvlist_add_string(spa->spa_load_info, | |
3166 | ZPOOL_CONFIG_MMP_HOSTNAME, hostname); | |
3167 | } | |
3168 | ||
3169 | if (nvlist_exists(mmp_label, ZPOOL_CONFIG_HOSTID)) { | |
3170 | hostid = fnvlist_lookup_uint64(mmp_label, | |
3171 | ZPOOL_CONFIG_HOSTID); | |
3172 | fnvlist_add_uint64(spa->spa_load_info, | |
3173 | ZPOOL_CONFIG_MMP_HOSTID, hostid); | |
3174 | } | |
3175 | } | |
3176 | ||
3177 | fnvlist_add_uint64(spa->spa_load_info, | |
3178 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_ACTIVE); | |
3179 | fnvlist_add_uint64(spa->spa_load_info, | |
3180 | ZPOOL_CONFIG_MMP_TXG, 0); | |
3181 | ||
3182 | error = spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO); | |
3183 | } | |
3184 | ||
3185 | if (mmp_label) | |
3186 | nvlist_free(mmp_label); | |
3187 | ||
3188 | return (error); | |
3189 | } | |
3190 | ||
9eb7b46e | 3191 | static int |
6cb8e530 PZ |
3192 | spa_verify_host(spa_t *spa, nvlist_t *mos_config) |
3193 | { | |
3194 | uint64_t hostid; | |
3195 | char *hostname; | |
3196 | uint64_t myhostid = 0; | |
3197 | ||
3198 | if (!spa_is_root(spa) && nvlist_lookup_uint64(mos_config, | |
3199 | ZPOOL_CONFIG_HOSTID, &hostid) == 0) { | |
3200 | hostname = fnvlist_lookup_string(mos_config, | |
3201 | ZPOOL_CONFIG_HOSTNAME); | |
3202 | ||
3203 | myhostid = zone_get_hostid(NULL); | |
3204 | ||
3205 | if (hostid != 0 && myhostid != 0 && hostid != myhostid) { | |
3206 | cmn_err(CE_WARN, "pool '%s' could not be " | |
3207 | "loaded as it was last accessed by " | |
3208 | "another system (host: %s hostid: 0x%llx). " | |
3209 | "See: http://illumos.org/msg/ZFS-8000-EY", | |
3210 | spa_name(spa), hostname, (u_longlong_t)hostid); | |
3211 | spa_load_failed(spa, "hostid verification failed: pool " | |
3212 | "last accessed by host: %s (hostid: 0x%llx)", | |
3213 | hostname, (u_longlong_t)hostid); | |
3214 | return (SET_ERROR(EBADF)); | |
3215 | } | |
3216 | } | |
3217 | ||
3218 | return (0); | |
3219 | } | |
3220 | ||
3221 | static int | |
3222 | spa_ld_parse_config(spa_t *spa, spa_import_type_t type) | |
428870ff BB |
3223 | { |
3224 | int error = 0; | |
6cb8e530 | 3225 | nvlist_t *nvtree, *nvl, *config = spa->spa_config; |
1c27024e | 3226 | int parse; |
9eb7b46e | 3227 | vdev_t *rvd; |
6cb8e530 PZ |
3228 | uint64_t pool_guid; |
3229 | char *comment; | |
3230 | ||
3231 | /* | |
3232 | * Versioning wasn't explicitly added to the label until later, so if | |
3233 | * it's not present treat it as the initial version. | |
3234 | */ | |
3235 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, | |
3236 | &spa->spa_ubsync.ub_version) != 0) | |
3237 | spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; | |
3238 | ||
3239 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { | |
3240 | spa_load_failed(spa, "invalid config provided: '%s' missing", | |
3241 | ZPOOL_CONFIG_POOL_GUID); | |
3242 | return (SET_ERROR(EINVAL)); | |
3243 | } | |
3244 | ||
d2734cce SD |
3245 | /* |
3246 | * If we are doing an import, ensure that the pool is not already | |
3247 | * imported by checking if its pool guid already exists in the | |
3248 | * spa namespace. | |
3249 | * | |
3250 | * The only case that we allow an already imported pool to be | |
3251 | * imported again, is when the pool is checkpointed and we want to | |
3252 | * look at its checkpointed state from userland tools like zdb. | |
3253 | */ | |
3254 | #ifdef _KERNEL | |
3255 | if ((spa->spa_load_state == SPA_LOAD_IMPORT || | |
3256 | spa->spa_load_state == SPA_LOAD_TRYIMPORT) && | |
3257 | spa_guid_exists(pool_guid, 0)) { | |
3258 | #else | |
3259 | if ((spa->spa_load_state == SPA_LOAD_IMPORT || | |
3260 | spa->spa_load_state == SPA_LOAD_TRYIMPORT) && | |
3261 | spa_guid_exists(pool_guid, 0) && | |
3262 | !spa_importing_readonly_checkpoint(spa)) { | |
3263 | #endif | |
6cb8e530 PZ |
3264 | spa_load_failed(spa, "a pool with guid %llu is already open", |
3265 | (u_longlong_t)pool_guid); | |
3266 | return (SET_ERROR(EEXIST)); | |
3267 | } | |
3268 | ||
3269 | spa->spa_config_guid = pool_guid; | |
3270 | ||
3271 | nvlist_free(spa->spa_load_info); | |
3272 | spa->spa_load_info = fnvlist_alloc(); | |
3273 | ||
3274 | ASSERT(spa->spa_comment == NULL); | |
3275 | if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0) | |
3276 | spa->spa_comment = spa_strdup(comment); | |
3277 | ||
3278 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
3279 | &spa->spa_config_txg); | |
3280 | ||
3281 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) == 0) | |
3282 | spa->spa_config_splitting = fnvlist_dup(nvl); | |
428870ff | 3283 | |
4a0ee12a PZ |
3284 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvtree)) { |
3285 | spa_load_failed(spa, "invalid config provided: '%s' missing", | |
3286 | ZPOOL_CONFIG_VDEV_TREE); | |
2e528b49 | 3287 | return (SET_ERROR(EINVAL)); |
4a0ee12a | 3288 | } |
428870ff | 3289 | |
428870ff BB |
3290 | /* |
3291 | * Create "The Godfather" zio to hold all async IOs | |
3292 | */ | |
e022864d MA |
3293 | spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *), |
3294 | KM_SLEEP); | |
1c27024e | 3295 | for (int i = 0; i < max_ncpus; i++) { |
e022864d MA |
3296 | spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, |
3297 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | | |
3298 | ZIO_FLAG_GODFATHER); | |
3299 | } | |
428870ff BB |
3300 | |
3301 | /* | |
3302 | * Parse the configuration into a vdev tree. We explicitly set the | |
3303 | * value that will be returned by spa_version() since parsing the | |
3304 | * configuration requires knowing the version number. | |
3305 | */ | |
3306 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
6cb8e530 PZ |
3307 | parse = (type == SPA_IMPORT_EXISTING ? |
3308 | VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT); | |
9eb7b46e | 3309 | error = spa_config_parse(spa, &rvd, nvtree, NULL, 0, parse); |
428870ff BB |
3310 | spa_config_exit(spa, SCL_ALL, FTAG); |
3311 | ||
4a0ee12a PZ |
3312 | if (error != 0) { |
3313 | spa_load_failed(spa, "unable to parse config [error=%d]", | |
3314 | error); | |
428870ff | 3315 | return (error); |
4a0ee12a | 3316 | } |
428870ff BB |
3317 | |
3318 | ASSERT(spa->spa_root_vdev == rvd); | |
c3520e7f MA |
3319 | ASSERT3U(spa->spa_min_ashift, >=, SPA_MINBLOCKSHIFT); |
3320 | ASSERT3U(spa->spa_max_ashift, <=, SPA_MAXBLOCKSHIFT); | |
428870ff BB |
3321 | |
3322 | if (type != SPA_IMPORT_ASSEMBLE) { | |
3323 | ASSERT(spa_guid(spa) == pool_guid); | |
3324 | } | |
3325 | ||
9eb7b46e PZ |
3326 | return (0); |
3327 | } | |
3328 | ||
6cb8e530 PZ |
3329 | /* |
3330 | * Recursively open all vdevs in the vdev tree. This function is called twice: | |
3331 | * first with the untrusted config, then with the trusted config. | |
3332 | */ | |
9eb7b46e PZ |
3333 | static int |
3334 | spa_ld_open_vdevs(spa_t *spa) | |
3335 | { | |
3336 | int error = 0; | |
3337 | ||
6cb8e530 PZ |
3338 | /* |
3339 | * spa_missing_tvds_allowed defines how many top-level vdevs can be | |
3340 | * missing/unopenable for the root vdev to be still considered openable. | |
3341 | */ | |
3342 | if (spa->spa_trust_config) { | |
3343 | spa->spa_missing_tvds_allowed = zfs_max_missing_tvds; | |
3344 | } else if (spa->spa_config_source == SPA_CONFIG_SRC_CACHEFILE) { | |
3345 | spa->spa_missing_tvds_allowed = zfs_max_missing_tvds_cachefile; | |
3346 | } else if (spa->spa_config_source == SPA_CONFIG_SRC_SCAN) { | |
3347 | spa->spa_missing_tvds_allowed = zfs_max_missing_tvds_scan; | |
3348 | } else { | |
3349 | spa->spa_missing_tvds_allowed = 0; | |
3350 | } | |
3351 | ||
3352 | spa->spa_missing_tvds_allowed = | |
3353 | MAX(zfs_max_missing_tvds, spa->spa_missing_tvds_allowed); | |
3354 | ||
428870ff | 3355 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
9eb7b46e | 3356 | error = vdev_open(spa->spa_root_vdev); |
428870ff | 3357 | spa_config_exit(spa, SCL_ALL, FTAG); |
6cb8e530 PZ |
3358 | |
3359 | if (spa->spa_missing_tvds != 0) { | |
3360 | spa_load_note(spa, "vdev tree has %lld missing top-level " | |
3361 | "vdevs.", (u_longlong_t)spa->spa_missing_tvds); | |
3362 | if (spa->spa_trust_config && (spa->spa_mode & FWRITE)) { | |
3363 | /* | |
3364 | * Although theoretically we could allow users to open | |
3365 | * incomplete pools in RW mode, we'd need to add a lot | |
3366 | * of extra logic (e.g. adjust pool space to account | |
3367 | * for missing vdevs). | |
3368 | * This limitation also prevents users from accidentally | |
3369 | * opening the pool in RW mode during data recovery and | |
3370 | * damaging it further. | |
3371 | */ | |
3372 | spa_load_note(spa, "pools with missing top-level " | |
3373 | "vdevs can only be opened in read-only mode."); | |
3374 | error = SET_ERROR(ENXIO); | |
3375 | } else { | |
3376 | spa_load_note(spa, "current settings allow for maximum " | |
3377 | "%lld missing top-level vdevs at this stage.", | |
3378 | (u_longlong_t)spa->spa_missing_tvds_allowed); | |
3379 | } | |
3380 | } | |
4a0ee12a PZ |
3381 | if (error != 0) { |
3382 | spa_load_failed(spa, "unable to open vdev tree [error=%d]", | |
3383 | error); | |
3384 | } | |
6cb8e530 PZ |
3385 | if (spa->spa_missing_tvds != 0 || error != 0) |
3386 | vdev_dbgmsg_print_tree(spa->spa_root_vdev, 2); | |
9eb7b46e PZ |
3387 | |
3388 | return (error); | |
3389 | } | |
3390 | ||
6cb8e530 PZ |
3391 | /* |
3392 | * We need to validate the vdev labels against the configuration that | |
3393 | * we have in hand. This function is called twice: first with an untrusted | |
3394 | * config, then with a trusted config. The validation is more strict when the | |
3395 | * config is trusted. | |
3396 | */ | |
9eb7b46e | 3397 | static int |
6cb8e530 | 3398 | spa_ld_validate_vdevs(spa_t *spa) |
9eb7b46e PZ |
3399 | { |
3400 | int error = 0; | |
3401 | vdev_t *rvd = spa->spa_root_vdev; | |
428870ff | 3402 | |
6cb8e530 PZ |
3403 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
3404 | error = vdev_validate(rvd); | |
3405 | spa_config_exit(spa, SCL_ALL, FTAG); | |
428870ff | 3406 | |
6cb8e530 PZ |
3407 | if (error != 0) { |
3408 | spa_load_failed(spa, "vdev_validate failed [error=%d]", error); | |
3409 | return (error); | |
3410 | } | |
428870ff | 3411 | |
6cb8e530 PZ |
3412 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
3413 | spa_load_failed(spa, "cannot open vdev tree after invalidating " | |
3414 | "some vdevs"); | |
3415 | vdev_dbgmsg_print_tree(rvd, 2); | |
3416 | return (SET_ERROR(ENXIO)); | |
428870ff BB |
3417 | } |
3418 | ||
9eb7b46e PZ |
3419 | return (0); |
3420 | } | |
3421 | ||
d2734cce SD |
3422 | static void |
3423 | spa_ld_select_uberblock_done(spa_t *spa, uberblock_t *ub) | |
3424 | { | |
3425 | spa->spa_state = POOL_STATE_ACTIVE; | |
3426 | spa->spa_ubsync = spa->spa_uberblock; | |
3427 | spa->spa_verify_min_txg = spa->spa_extreme_rewind ? | |
3428 | TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1; | |
3429 | spa->spa_first_txg = spa->spa_last_ubsync_txg ? | |
3430 | spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1; | |
3431 | spa->spa_claim_max_txg = spa->spa_first_txg; | |
3432 | spa->spa_prev_software_version = ub->ub_software_version; | |
3433 | } | |
3434 | ||
9eb7b46e | 3435 | static int |
6cb8e530 | 3436 | spa_ld_select_uberblock(spa_t *spa, spa_import_type_t type) |
9eb7b46e PZ |
3437 | { |
3438 | vdev_t *rvd = spa->spa_root_vdev; | |
3439 | nvlist_t *label; | |
3440 | uberblock_t *ub = &spa->spa_uberblock; | |
9eb7b46e PZ |
3441 | boolean_t activity_check = B_FALSE; |
3442 | ||
d2734cce SD |
3443 | /* |
3444 | * If we are opening the checkpointed state of the pool by | |
3445 | * rewinding to it, at this point we will have written the | |
3446 | * checkpointed uberblock to the vdev labels, so searching | |
3447 | * the labels will find the right uberblock. However, if | |
3448 | * we are opening the checkpointed state read-only, we have | |
3449 | * not modified the labels. Therefore, we must ignore the | |
3450 | * labels and continue using the spa_uberblock that was set | |
3451 | * by spa_ld_checkpoint_rewind. | |
3452 | * | |
3453 | * Note that it would be fine to ignore the labels when | |
3454 | * rewinding (opening writeable) as well. However, if we | |
3455 | * crash just after writing the labels, we will end up | |
3456 | * searching the labels. Doing so in the common case means | |
3457 | * that this code path gets exercised normally, rather than | |
3458 | * just in the edge case. | |
3459 | */ | |
3460 | if (ub->ub_checkpoint_txg != 0 && | |
3461 | spa_importing_readonly_checkpoint(spa)) { | |
3462 | spa_ld_select_uberblock_done(spa, ub); | |
3463 | return (0); | |
3464 | } | |
3465 | ||
428870ff BB |
3466 | /* |
3467 | * Find the best uberblock. | |
3468 | */ | |
9ae529ec | 3469 | vdev_uberblock_load(rvd, ub, &label); |
428870ff BB |
3470 | |
3471 | /* | |
3472 | * If we weren't able to find a single valid uberblock, return failure. | |
3473 | */ | |
9ae529ec CS |
3474 | if (ub->ub_txg == 0) { |
3475 | nvlist_free(label); | |
4a0ee12a | 3476 | spa_load_failed(spa, "no valid uberblock found"); |
428870ff | 3477 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO)); |
9ae529ec | 3478 | } |
428870ff | 3479 | |
ca95f70d OF |
3480 | if (spa->spa_load_max_txg != UINT64_MAX) { |
3481 | (void) spa_import_progress_set_max_txg(spa_guid(spa), | |
3482 | (u_longlong_t)spa->spa_load_max_txg); | |
3483 | } | |
4a0ee12a PZ |
3484 | spa_load_note(spa, "using uberblock with txg=%llu", |
3485 | (u_longlong_t)ub->ub_txg); | |
3486 | ||
3487 | ||
379ca9cf OF |
3488 | /* |
3489 | * For pools which have the multihost property on determine if the | |
3490 | * pool is truly inactive and can be safely imported. Prevent | |
3491 | * hosts which don't have a hostid set from importing the pool. | |
3492 | */ | |
6cb8e530 PZ |
3493 | activity_check = spa_activity_check_required(spa, ub, label, |
3494 | spa->spa_config); | |
379ca9cf | 3495 | if (activity_check) { |
379ca9cf | 3496 | if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay && |
25f06d67 | 3497 | spa_get_hostid(spa) == 0) { |
379ca9cf OF |
3498 | nvlist_free(label); |
3499 | fnvlist_add_uint64(spa->spa_load_info, | |
3500 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_NO_HOSTID); | |
3501 | return (spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO)); | |
3502 | } | |
3503 | ||
6cb8e530 | 3504 | int error = spa_activity_check(spa, ub, spa->spa_config); |
e889f0f5 OF |
3505 | if (error) { |
3506 | nvlist_free(label); | |
3507 | return (error); | |
3508 | } | |
3509 | ||
379ca9cf OF |
3510 | fnvlist_add_uint64(spa->spa_load_info, |
3511 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_INACTIVE); | |
3512 | fnvlist_add_uint64(spa->spa_load_info, | |
3513 | ZPOOL_CONFIG_MMP_TXG, ub->ub_txg); | |
060f0226 OF |
3514 | fnvlist_add_uint16(spa->spa_load_info, |
3515 | ZPOOL_CONFIG_MMP_SEQ, | |
3516 | (MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0)); | |
379ca9cf OF |
3517 | } |
3518 | ||
428870ff | 3519 | /* |
9ae529ec | 3520 | * If the pool has an unsupported version we can't open it. |
428870ff | 3521 | */ |
9ae529ec CS |
3522 | if (!SPA_VERSION_IS_SUPPORTED(ub->ub_version)) { |
3523 | nvlist_free(label); | |
4a0ee12a PZ |
3524 | spa_load_failed(spa, "version %llu is not supported", |
3525 | (u_longlong_t)ub->ub_version); | |
428870ff | 3526 | return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP)); |
9ae529ec CS |
3527 | } |
3528 | ||
3529 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
3530 | nvlist_t *features; | |
3531 | ||
3532 | /* | |
3533 | * If we weren't able to find what's necessary for reading the | |
3534 | * MOS in the label, return failure. | |
3535 | */ | |
4a0ee12a PZ |
3536 | if (label == NULL) { |
3537 | spa_load_failed(spa, "label config unavailable"); | |
3538 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, | |
3539 | ENXIO)); | |
3540 | } | |
3541 | ||
3542 | if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_FEATURES_FOR_READ, | |
3543 | &features) != 0) { | |
9ae529ec | 3544 | nvlist_free(label); |
4a0ee12a PZ |
3545 | spa_load_failed(spa, "invalid label: '%s' missing", |
3546 | ZPOOL_CONFIG_FEATURES_FOR_READ); | |
9ae529ec CS |
3547 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, |
3548 | ENXIO)); | |
3549 | } | |
3550 | ||
3551 | /* | |
3552 | * Update our in-core representation with the definitive values | |
3553 | * from the label. | |
3554 | */ | |
3555 | nvlist_free(spa->spa_label_features); | |
3556 | VERIFY(nvlist_dup(features, &spa->spa_label_features, 0) == 0); | |
3557 | } | |
3558 | ||
3559 | nvlist_free(label); | |
3560 | ||
3561 | /* | |
3562 | * Look through entries in the label nvlist's features_for_read. If | |
3563 | * there is a feature listed there which we don't understand then we | |
3564 | * cannot open a pool. | |
3565 | */ | |
3566 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
3567 | nvlist_t *unsup_feat; | |
9ae529ec CS |
3568 | |
3569 | VERIFY(nvlist_alloc(&unsup_feat, NV_UNIQUE_NAME, KM_SLEEP) == | |
3570 | 0); | |
3571 | ||
1c27024e DB |
3572 | for (nvpair_t *nvp = nvlist_next_nvpair(spa->spa_label_features, |
3573 | NULL); nvp != NULL; | |
9ae529ec CS |
3574 | nvp = nvlist_next_nvpair(spa->spa_label_features, nvp)) { |
3575 | if (!zfeature_is_supported(nvpair_name(nvp))) { | |
3576 | VERIFY(nvlist_add_string(unsup_feat, | |
3577 | nvpair_name(nvp), "") == 0); | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | if (!nvlist_empty(unsup_feat)) { | |
3582 | VERIFY(nvlist_add_nvlist(spa->spa_load_info, | |
3583 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat) == 0); | |
3584 | nvlist_free(unsup_feat); | |
4a0ee12a | 3585 | spa_load_failed(spa, "some features are unsupported"); |
9ae529ec CS |
3586 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, |
3587 | ENOTSUP)); | |
3588 | } | |
3589 | ||
3590 | nvlist_free(unsup_feat); | |
3591 | } | |
428870ff | 3592 | |
428870ff BB |
3593 | if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) { |
3594 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
6cb8e530 | 3595 | spa_try_repair(spa, spa->spa_config); |
428870ff BB |
3596 | spa_config_exit(spa, SCL_ALL, FTAG); |
3597 | nvlist_free(spa->spa_config_splitting); | |
3598 | spa->spa_config_splitting = NULL; | |
3599 | } | |
3600 | ||
3601 | /* | |
3602 | * Initialize internal SPA structures. | |
3603 | */ | |
d2734cce | 3604 | spa_ld_select_uberblock_done(spa, ub); |
428870ff | 3605 | |
9eb7b46e PZ |
3606 | return (0); |
3607 | } | |
3608 | ||
3609 | static int | |
3610 | spa_ld_open_rootbp(spa_t *spa) | |
3611 | { | |
3612 | int error = 0; | |
3613 | vdev_t *rvd = spa->spa_root_vdev; | |
a1d477c2 | 3614 | |
9ae529ec | 3615 | error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
4a0ee12a PZ |
3616 | if (error != 0) { |
3617 | spa_load_failed(spa, "unable to open rootbp in dsl_pool_init " | |
3618 | "[error=%d]", error); | |
428870ff | 3619 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3620 | } |
428870ff BB |
3621 | spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
3622 | ||
9eb7b46e PZ |
3623 | return (0); |
3624 | } | |
3625 | ||
3626 | static int | |
d2734cce | 3627 | spa_ld_trusted_config(spa_t *spa, spa_import_type_t type, |
6cb8e530 | 3628 | boolean_t reloading) |
9eb7b46e | 3629 | { |
6cb8e530 PZ |
3630 | vdev_t *mrvd, *rvd = spa->spa_root_vdev; |
3631 | nvlist_t *nv, *mos_config, *policy; | |
3632 | int error = 0, copy_error; | |
3633 | uint64_t healthy_tvds, healthy_tvds_mos; | |
3634 | uint64_t mos_config_txg; | |
9eb7b46e | 3635 | |
4a0ee12a PZ |
3636 | if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object, B_TRUE) |
3637 | != 0) | |
428870ff BB |
3638 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3639 | ||
a1d477c2 | 3640 | /* |
6cb8e530 PZ |
3641 | * If we're assembling a pool from a split, the config provided is |
3642 | * already trusted so there is nothing to do. | |
a1d477c2 | 3643 | */ |
6cb8e530 PZ |
3644 | if (type == SPA_IMPORT_ASSEMBLE) |
3645 | return (0); | |
3646 | ||
3647 | healthy_tvds = spa_healthy_core_tvds(spa); | |
a1d477c2 | 3648 | |
6cb8e530 PZ |
3649 | if (load_nvlist(spa, spa->spa_config_object, &mos_config) |
3650 | != 0) { | |
3651 | spa_load_failed(spa, "unable to retrieve MOS config"); | |
3652 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3653 | } | |
3654 | ||
3655 | /* | |
3656 | * If we are doing an open, pool owner wasn't verified yet, thus do | |
3657 | * the verification here. | |
3658 | */ | |
3659 | if (spa->spa_load_state == SPA_LOAD_OPEN) { | |
3660 | error = spa_verify_host(spa, mos_config); | |
3661 | if (error != 0) { | |
a1d477c2 | 3662 | nvlist_free(mos_config); |
6cb8e530 | 3663 | return (error); |
a1d477c2 | 3664 | } |
6cb8e530 PZ |
3665 | } |
3666 | ||
3667 | nv = fnvlist_lookup_nvlist(mos_config, ZPOOL_CONFIG_VDEV_TREE); | |
a1d477c2 | 3668 | |
6cb8e530 PZ |
3669 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
3670 | ||
3671 | /* | |
3672 | * Build a new vdev tree from the trusted config | |
3673 | */ | |
3674 | VERIFY(spa_config_parse(spa, &mrvd, nv, NULL, 0, VDEV_ALLOC_LOAD) == 0); | |
3675 | ||
3676 | /* | |
3677 | * Vdev paths in the MOS may be obsolete. If the untrusted config was | |
3678 | * obtained by scanning /dev/dsk, then it will have the right vdev | |
3679 | * paths. We update the trusted MOS config with this information. | |
3680 | * We first try to copy the paths with vdev_copy_path_strict, which | |
3681 | * succeeds only when both configs have exactly the same vdev tree. | |
3682 | * If that fails, we fall back to a more flexible method that has a | |
3683 | * best effort policy. | |
3684 | */ | |
3685 | copy_error = vdev_copy_path_strict(rvd, mrvd); | |
3686 | if (copy_error != 0 || spa_load_print_vdev_tree) { | |
3687 | spa_load_note(spa, "provided vdev tree:"); | |
3688 | vdev_dbgmsg_print_tree(rvd, 2); | |
3689 | spa_load_note(spa, "MOS vdev tree:"); | |
3690 | vdev_dbgmsg_print_tree(mrvd, 2); | |
3691 | } | |
3692 | if (copy_error != 0) { | |
3693 | spa_load_note(spa, "vdev_copy_path_strict failed, falling " | |
3694 | "back to vdev_copy_path_relaxed"); | |
3695 | vdev_copy_path_relaxed(rvd, mrvd); | |
3696 | } | |
3697 | ||
3698 | vdev_close(rvd); | |
3699 | vdev_free(rvd); | |
3700 | spa->spa_root_vdev = mrvd; | |
3701 | rvd = mrvd; | |
3702 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3703 | ||
3704 | /* | |
3705 | * We will use spa_config if we decide to reload the spa or if spa_load | |
3706 | * fails and we rewind. We must thus regenerate the config using the | |
8a393be3 PZ |
3707 | * MOS information with the updated paths. ZPOOL_LOAD_POLICY is used to |
3708 | * pass settings on how to load the pool and is not stored in the MOS. | |
3709 | * We copy it over to our new, trusted config. | |
6cb8e530 PZ |
3710 | */ |
3711 | mos_config_txg = fnvlist_lookup_uint64(mos_config, | |
3712 | ZPOOL_CONFIG_POOL_TXG); | |
3713 | nvlist_free(mos_config); | |
3714 | mos_config = spa_config_generate(spa, NULL, mos_config_txg, B_FALSE); | |
8a393be3 | 3715 | if (nvlist_lookup_nvlist(spa->spa_config, ZPOOL_LOAD_POLICY, |
6cb8e530 | 3716 | &policy) == 0) |
8a393be3 | 3717 | fnvlist_add_nvlist(mos_config, ZPOOL_LOAD_POLICY, policy); |
6cb8e530 PZ |
3718 | spa_config_set(spa, mos_config); |
3719 | spa->spa_config_source = SPA_CONFIG_SRC_MOS; | |
3720 | ||
3721 | /* | |
3722 | * Now that we got the config from the MOS, we should be more strict | |
3723 | * in checking blkptrs and can make assumptions about the consistency | |
3724 | * of the vdev tree. spa_trust_config must be set to true before opening | |
3725 | * vdevs in order for them to be writeable. | |
3726 | */ | |
3727 | spa->spa_trust_config = B_TRUE; | |
3728 | ||
3729 | /* | |
3730 | * Open and validate the new vdev tree | |
3731 | */ | |
3732 | error = spa_ld_open_vdevs(spa); | |
3733 | if (error != 0) | |
3734 | return (error); | |
3735 | ||
3736 | error = spa_ld_validate_vdevs(spa); | |
3737 | if (error != 0) | |
3738 | return (error); | |
3739 | ||
3740 | if (copy_error != 0 || spa_load_print_vdev_tree) { | |
3741 | spa_load_note(spa, "final vdev tree:"); | |
3742 | vdev_dbgmsg_print_tree(rvd, 2); | |
3743 | } | |
3744 | ||
3745 | if (spa->spa_load_state != SPA_LOAD_TRYIMPORT && | |
3746 | !spa->spa_extreme_rewind && zfs_max_missing_tvds == 0) { | |
a1d477c2 | 3747 | /* |
6cb8e530 PZ |
3748 | * Sanity check to make sure that we are indeed loading the |
3749 | * latest uberblock. If we missed SPA_SYNC_MIN_VDEVS tvds | |
3750 | * in the config provided and they happened to be the only ones | |
3751 | * to have the latest uberblock, we could involuntarily perform | |
3752 | * an extreme rewind. | |
a1d477c2 | 3753 | */ |
6cb8e530 PZ |
3754 | healthy_tvds_mos = spa_healthy_core_tvds(spa); |
3755 | if (healthy_tvds_mos - healthy_tvds >= | |
3756 | SPA_SYNC_MIN_VDEVS) { | |
3757 | spa_load_note(spa, "config provided misses too many " | |
3758 | "top-level vdevs compared to MOS (%lld vs %lld). ", | |
3759 | (u_longlong_t)healthy_tvds, | |
3760 | (u_longlong_t)healthy_tvds_mos); | |
3761 | spa_load_note(spa, "vdev tree:"); | |
3762 | vdev_dbgmsg_print_tree(rvd, 2); | |
3763 | if (reloading) { | |
3764 | spa_load_failed(spa, "config was already " | |
3765 | "provided from MOS. Aborting."); | |
3766 | return (spa_vdev_err(rvd, | |
3767 | VDEV_AUX_CORRUPT_DATA, EIO)); | |
3768 | } | |
3769 | spa_load_note(spa, "spa must be reloaded using MOS " | |
3770 | "config"); | |
3771 | return (SET_ERROR(EAGAIN)); | |
4a0ee12a | 3772 | } |
a1d477c2 MA |
3773 | } |
3774 | ||
6cb8e530 PZ |
3775 | error = spa_check_for_missing_logs(spa); |
3776 | if (error != 0) | |
3777 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO)); | |
3778 | ||
3779 | if (rvd->vdev_guid_sum != spa->spa_uberblock.ub_guid_sum) { | |
3780 | spa_load_failed(spa, "uberblock guid sum doesn't match MOS " | |
3781 | "guid sum (%llu != %llu)", | |
3782 | (u_longlong_t)spa->spa_uberblock.ub_guid_sum, | |
3783 | (u_longlong_t)rvd->vdev_guid_sum); | |
3784 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, | |
3785 | ENXIO)); | |
3786 | } | |
3787 | ||
9eb7b46e PZ |
3788 | return (0); |
3789 | } | |
3790 | ||
3791 | static int | |
3792 | spa_ld_open_indirect_vdev_metadata(spa_t *spa) | |
3793 | { | |
3794 | int error = 0; | |
3795 | vdev_t *rvd = spa->spa_root_vdev; | |
3796 | ||
a1d477c2 MA |
3797 | /* |
3798 | * Everything that we read before spa_remove_init() must be stored | |
3799 | * on concreted vdevs. Therefore we do this as early as possible. | |
3800 | */ | |
4a0ee12a PZ |
3801 | error = spa_remove_init(spa); |
3802 | if (error != 0) { | |
3803 | spa_load_failed(spa, "spa_remove_init failed [error=%d]", | |
3804 | error); | |
a1d477c2 | 3805 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3806 | } |
a1d477c2 | 3807 | |
9eb7b46e PZ |
3808 | /* |
3809 | * Retrieve information needed to condense indirect vdev mappings. | |
3810 | */ | |
3811 | error = spa_condense_init(spa); | |
3812 | if (error != 0) { | |
4a0ee12a PZ |
3813 | spa_load_failed(spa, "spa_condense_init failed [error=%d]", |
3814 | error); | |
9eb7b46e PZ |
3815 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error)); |
3816 | } | |
3817 | ||
3818 | return (0); | |
3819 | } | |
3820 | ||
3821 | static int | |
4a0ee12a | 3822 | spa_ld_check_features(spa_t *spa, boolean_t *missing_feat_writep) |
9eb7b46e PZ |
3823 | { |
3824 | int error = 0; | |
3825 | vdev_t *rvd = spa->spa_root_vdev; | |
3826 | ||
9ae529ec CS |
3827 | if (spa_version(spa) >= SPA_VERSION_FEATURES) { |
3828 | boolean_t missing_feat_read = B_FALSE; | |
b9b24bb4 | 3829 | nvlist_t *unsup_feat, *enabled_feat; |
9ae529ec CS |
3830 | |
3831 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ, | |
4a0ee12a | 3832 | &spa->spa_feat_for_read_obj, B_TRUE) != 0) { |
9ae529ec CS |
3833 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3834 | } | |
3835 | ||
3836 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE, | |
4a0ee12a | 3837 | &spa->spa_feat_for_write_obj, B_TRUE) != 0) { |
9ae529ec CS |
3838 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3839 | } | |
3840 | ||
3841 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS, | |
4a0ee12a | 3842 | &spa->spa_feat_desc_obj, B_TRUE) != 0) { |
9ae529ec CS |
3843 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3844 | } | |
3845 | ||
b9b24bb4 CS |
3846 | enabled_feat = fnvlist_alloc(); |
3847 | unsup_feat = fnvlist_alloc(); | |
9ae529ec | 3848 | |
fa86b5db | 3849 | if (!spa_features_check(spa, B_FALSE, |
b9b24bb4 | 3850 | unsup_feat, enabled_feat)) |
9ae529ec CS |
3851 | missing_feat_read = B_TRUE; |
3852 | ||
4a0ee12a PZ |
3853 | if (spa_writeable(spa) || |
3854 | spa->spa_load_state == SPA_LOAD_TRYIMPORT) { | |
fa86b5db | 3855 | if (!spa_features_check(spa, B_TRUE, |
b9b24bb4 | 3856 | unsup_feat, enabled_feat)) { |
9eb7b46e | 3857 | *missing_feat_writep = B_TRUE; |
b9b24bb4 | 3858 | } |
9ae529ec CS |
3859 | } |
3860 | ||
b9b24bb4 CS |
3861 | fnvlist_add_nvlist(spa->spa_load_info, |
3862 | ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat); | |
3863 | ||
9ae529ec | 3864 | if (!nvlist_empty(unsup_feat)) { |
b9b24bb4 CS |
3865 | fnvlist_add_nvlist(spa->spa_load_info, |
3866 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat); | |
9ae529ec CS |
3867 | } |
3868 | ||
b9b24bb4 CS |
3869 | fnvlist_free(enabled_feat); |
3870 | fnvlist_free(unsup_feat); | |
9ae529ec CS |
3871 | |
3872 | if (!missing_feat_read) { | |
3873 | fnvlist_add_boolean(spa->spa_load_info, | |
3874 | ZPOOL_CONFIG_CAN_RDONLY); | |
3875 | } | |
3876 | ||
3877 | /* | |
3878 | * If the state is SPA_LOAD_TRYIMPORT, our objective is | |
3879 | * twofold: to determine whether the pool is available for | |
3880 | * import in read-write mode and (if it is not) whether the | |
3881 | * pool is available for import in read-only mode. If the pool | |
3882 | * is available for import in read-write mode, it is displayed | |
3883 | * as available in userland; if it is not available for import | |
3884 | * in read-only mode, it is displayed as unavailable in | |
3885 | * userland. If the pool is available for import in read-only | |
3886 | * mode but not read-write mode, it is displayed as unavailable | |
3887 | * in userland with a special note that the pool is actually | |
3888 | * available for open in read-only mode. | |
3889 | * | |
3890 | * As a result, if the state is SPA_LOAD_TRYIMPORT and we are | |
3891 | * missing a feature for write, we must first determine whether | |
3892 | * the pool can be opened read-only before returning to | |
3893 | * userland in order to know whether to display the | |
3894 | * abovementioned note. | |
3895 | */ | |
9eb7b46e | 3896 | if (missing_feat_read || (*missing_feat_writep && |
9ae529ec | 3897 | spa_writeable(spa))) { |
4a0ee12a | 3898 | spa_load_failed(spa, "pool uses unsupported features"); |
9ae529ec CS |
3899 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, |
3900 | ENOTSUP)); | |
3901 | } | |
b0bc7a84 MG |
3902 | |
3903 | /* | |
3904 | * Load refcounts for ZFS features from disk into an in-memory | |
3905 | * cache during SPA initialization. | |
3906 | */ | |
1c27024e | 3907 | for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { |
b0bc7a84 MG |
3908 | uint64_t refcount; |
3909 | ||
3910 | error = feature_get_refcount_from_disk(spa, | |
3911 | &spa_feature_table[i], &refcount); | |
3912 | if (error == 0) { | |
3913 | spa->spa_feat_refcount_cache[i] = refcount; | |
3914 | } else if (error == ENOTSUP) { | |
3915 | spa->spa_feat_refcount_cache[i] = | |
3916 | SPA_FEATURE_DISABLED; | |
3917 | } else { | |
4a0ee12a PZ |
3918 | spa_load_failed(spa, "error getting refcount " |
3919 | "for feature %s [error=%d]", | |
3920 | spa_feature_table[i].fi_guid, error); | |
b0bc7a84 MG |
3921 | return (spa_vdev_err(rvd, |
3922 | VDEV_AUX_CORRUPT_DATA, EIO)); | |
3923 | } | |
3924 | } | |
3925 | } | |
3926 | ||
3927 | if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) { | |
3928 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_ENABLED_TXG, | |
4a0ee12a | 3929 | &spa->spa_feat_enabled_txg_obj, B_TRUE) != 0) |
b0bc7a84 | 3930 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
9ae529ec CS |
3931 | } |
3932 | ||
f00ab3f2 TC |
3933 | /* |
3934 | * Encryption was added before bookmark_v2, even though bookmark_v2 | |
3935 | * is now a dependency. If this pool has encryption enabled without | |
3936 | * bookmark_v2, trigger an errata message. | |
3937 | */ | |
3938 | if (spa_feature_is_enabled(spa, SPA_FEATURE_ENCRYPTION) && | |
3939 | !spa_feature_is_enabled(spa, SPA_FEATURE_BOOKMARK_V2)) { | |
3940 | spa->spa_errata = ZPOOL_ERRATA_ZOL_8308_ENCRYPTION; | |
3941 | } | |
3942 | ||
9eb7b46e PZ |
3943 | return (0); |
3944 | } | |
3945 | ||
3946 | static int | |
3947 | spa_ld_load_special_directories(spa_t *spa) | |
3948 | { | |
3949 | int error = 0; | |
3950 | vdev_t *rvd = spa->spa_root_vdev; | |
3951 | ||
9ae529ec CS |
3952 | spa->spa_is_initializing = B_TRUE; |
3953 | error = dsl_pool_open(spa->spa_dsl_pool); | |
3954 | spa->spa_is_initializing = B_FALSE; | |
4a0ee12a PZ |
3955 | if (error != 0) { |
3956 | spa_load_failed(spa, "dsl_pool_open failed [error=%d]", error); | |
9ae529ec | 3957 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3958 | } |
9ae529ec | 3959 | |
9eb7b46e PZ |
3960 | return (0); |
3961 | } | |
428870ff | 3962 | |
9eb7b46e PZ |
3963 | static int |
3964 | spa_ld_get_props(spa_t *spa) | |
3965 | { | |
3966 | int error = 0; | |
3967 | uint64_t obj; | |
3968 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 3969 | |
3c67d83a TH |
3970 | /* Grab the checksum salt from the MOS. */ |
3971 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
3972 | DMU_POOL_CHECKSUM_SALT, 1, | |
3973 | sizeof (spa->spa_cksum_salt.zcs_bytes), | |
3974 | spa->spa_cksum_salt.zcs_bytes); | |
3975 | if (error == ENOENT) { | |
3976 | /* Generate a new salt for subsequent use */ | |
3977 | (void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes, | |
3978 | sizeof (spa->spa_cksum_salt.zcs_bytes)); | |
3979 | } else if (error != 0) { | |
4a0ee12a PZ |
3980 | spa_load_failed(spa, "unable to retrieve checksum salt from " |
3981 | "MOS [error=%d]", error); | |
3c67d83a TH |
3982 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3983 | } | |
3984 | ||
4a0ee12a | 3985 | if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj, B_TRUE) != 0) |
428870ff BB |
3986 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3987 | error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj); | |
4a0ee12a PZ |
3988 | if (error != 0) { |
3989 | spa_load_failed(spa, "error opening deferred-frees bpobj " | |
3990 | "[error=%d]", error); | |
428870ff | 3991 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3992 | } |
34dc7c2f BB |
3993 | |
3994 | /* | |
3995 | * Load the bit that tells us to use the new accounting function | |
3996 | * (raid-z deflation). If we have an older pool, this will not | |
3997 | * be present. | |
3998 | */ | |
4a0ee12a | 3999 | error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate, B_FALSE); |
428870ff BB |
4000 | if (error != 0 && error != ENOENT) |
4001 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
4002 | ||
4003 | error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION, | |
4a0ee12a | 4004 | &spa->spa_creation_version, B_FALSE); |
428870ff BB |
4005 | if (error != 0 && error != ENOENT) |
4006 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
4007 | |
4008 | /* | |
4009 | * Load the persistent error log. If we have an older pool, this will | |
4010 | * not be present. | |
4011 | */ | |
4a0ee12a PZ |
4012 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last, |
4013 | B_FALSE); | |
428870ff BB |
4014 | if (error != 0 && error != ENOENT) |
4015 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 4016 | |
428870ff | 4017 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB, |
4a0ee12a | 4018 | &spa->spa_errlog_scrub, B_FALSE); |
428870ff BB |
4019 | if (error != 0 && error != ENOENT) |
4020 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 4021 | |
37f03da8 SH |
4022 | /* |
4023 | * Load the livelist deletion field. If a livelist is queued for | |
4024 | * deletion, indicate that in the spa | |
4025 | */ | |
4026 | error = spa_dir_prop(spa, DMU_POOL_DELETED_CLONES, | |
4027 | &spa->spa_livelists_to_delete, B_FALSE); | |
4028 | if (error != 0 && error != ENOENT) | |
4029 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
4030 | ||
34dc7c2f BB |
4031 | /* |
4032 | * Load the history object. If we have an older pool, this | |
4033 | * will not be present. | |
4034 | */ | |
4a0ee12a | 4035 | error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history, B_FALSE); |
428870ff BB |
4036 | if (error != 0 && error != ENOENT) |
4037 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
4038 | ||
e0ab3ab5 JS |
4039 | /* |
4040 | * Load the per-vdev ZAP map. If we have an older pool, this will not | |
4041 | * be present; in this case, defer its creation to a later time to | |
4042 | * avoid dirtying the MOS this early / out of sync context. See | |
4043 | * spa_sync_config_object. | |
4044 | */ | |
4045 | ||
4046 | /* The sentinel is only available in the MOS config. */ | |
1c27024e | 4047 | nvlist_t *mos_config; |
4a0ee12a PZ |
4048 | if (load_nvlist(spa, spa->spa_config_object, &mos_config) != 0) { |
4049 | spa_load_failed(spa, "unable to retrieve MOS config"); | |
e0ab3ab5 | 4050 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 4051 | } |
e0ab3ab5 JS |
4052 | |
4053 | error = spa_dir_prop(spa, DMU_POOL_VDEV_ZAP_MAP, | |
4a0ee12a | 4054 | &spa->spa_all_vdev_zaps, B_FALSE); |
e0ab3ab5 | 4055 | |
38640550 DB |
4056 | if (error == ENOENT) { |
4057 | VERIFY(!nvlist_exists(mos_config, | |
4058 | ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)); | |
4059 | spa->spa_avz_action = AVZ_ACTION_INITIALIZE; | |
4060 | ASSERT0(vdev_count_verify_zaps(spa->spa_root_vdev)); | |
4061 | } else if (error != 0) { | |
e0ab3ab5 | 4062 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
38640550 | 4063 | } else if (!nvlist_exists(mos_config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)) { |
e0ab3ab5 JS |
4064 | /* |
4065 | * An older version of ZFS overwrote the sentinel value, so | |
4066 | * we have orphaned per-vdev ZAPs in the MOS. Defer their | |
4067 | * destruction to later; see spa_sync_config_object. | |
4068 | */ | |
4069 | spa->spa_avz_action = AVZ_ACTION_DESTROY; | |
4070 | /* | |
4071 | * We're assuming that no vdevs have had their ZAPs created | |
4072 | * before this. Better be sure of it. | |
4073 | */ | |
4074 | ASSERT0(vdev_count_verify_zaps(spa->spa_root_vdev)); | |
4075 | } | |
4076 | nvlist_free(mos_config); | |
4077 | ||
9eb7b46e PZ |
4078 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
4079 | ||
4a0ee12a PZ |
4080 | error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object, |
4081 | B_FALSE); | |
9eb7b46e PZ |
4082 | if (error && error != ENOENT) |
4083 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
4084 | ||
4085 | if (error == 0) { | |
4086 | uint64_t autoreplace; | |
4087 | ||
4088 | spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs); | |
4089 | spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace); | |
4090 | spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation); | |
4091 | spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode); | |
4092 | spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand); | |
c02c1bec | 4093 | spa_prop_find(spa, ZPOOL_PROP_MULTIHOST, &spa->spa_multihost); |
1b939560 | 4094 | spa_prop_find(spa, ZPOOL_PROP_AUTOTRIM, &spa->spa_autotrim); |
9eb7b46e PZ |
4095 | spa->spa_autoreplace = (autoreplace != 0); |
4096 | } | |
4097 | ||
6cb8e530 PZ |
4098 | /* |
4099 | * If we are importing a pool with missing top-level vdevs, | |
4100 | * we enforce that the pool doesn't panic or get suspended on | |
4101 | * error since the likelihood of missing data is extremely high. | |
4102 | */ | |
4103 | if (spa->spa_missing_tvds > 0 && | |
4104 | spa->spa_failmode != ZIO_FAILURE_MODE_CONTINUE && | |
4105 | spa->spa_load_state != SPA_LOAD_TRYIMPORT) { | |
4106 | spa_load_note(spa, "forcing failmode to 'continue' " | |
4107 | "as some top level vdevs are missing"); | |
4108 | spa->spa_failmode = ZIO_FAILURE_MODE_CONTINUE; | |
4109 | } | |
4110 | ||
9eb7b46e PZ |
4111 | return (0); |
4112 | } | |
4113 | ||
4114 | static int | |
4115 | spa_ld_open_aux_vdevs(spa_t *spa, spa_import_type_t type) | |
4116 | { | |
4117 | int error = 0; | |
4118 | vdev_t *rvd = spa->spa_root_vdev; | |
4119 | ||
428870ff BB |
4120 | /* |
4121 | * If we're assembling the pool from the split-off vdevs of | |
4122 | * an existing pool, we don't want to attach the spares & cache | |
4123 | * devices. | |
4124 | */ | |
34dc7c2f BB |
4125 | |
4126 | /* | |
4127 | * Load any hot spares for this pool. | |
4128 | */ | |
4a0ee12a PZ |
4129 | error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object, |
4130 | B_FALSE); | |
428870ff BB |
4131 | if (error != 0 && error != ENOENT) |
4132 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
4133 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
4134 | ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); |
4135 | if (load_nvlist(spa, spa->spa_spares.sav_object, | |
4a0ee12a PZ |
4136 | &spa->spa_spares.sav_config) != 0) { |
4137 | spa_load_failed(spa, "error loading spares nvlist"); | |
428870ff | 4138 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 4139 | } |
34dc7c2f | 4140 | |
b128c09f | 4141 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4142 | spa_load_spares(spa); |
b128c09f | 4143 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
4144 | } else if (error == 0) { |
4145 | spa->spa_spares.sav_sync = B_TRUE; | |
34dc7c2f BB |
4146 | } |
4147 | ||
4148 | /* | |
4149 | * Load any level 2 ARC devices for this pool. | |
4150 | */ | |
428870ff | 4151 | error = spa_dir_prop(spa, DMU_POOL_L2CACHE, |
4a0ee12a | 4152 | &spa->spa_l2cache.sav_object, B_FALSE); |
428870ff BB |
4153 | if (error != 0 && error != ENOENT) |
4154 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
4155 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
4156 | ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); |
4157 | if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
4a0ee12a PZ |
4158 | &spa->spa_l2cache.sav_config) != 0) { |
4159 | spa_load_failed(spa, "error loading l2cache nvlist"); | |
428870ff | 4160 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 4161 | } |
34dc7c2f | 4162 | |
b128c09f | 4163 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4164 | spa_load_l2cache(spa); |
b128c09f | 4165 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
4166 | } else if (error == 0) { |
4167 | spa->spa_l2cache.sav_sync = B_TRUE; | |
b128c09f BB |
4168 | } |
4169 | ||
9eb7b46e PZ |
4170 | return (0); |
4171 | } | |
428870ff | 4172 | |
9eb7b46e | 4173 | static int |
4a0ee12a | 4174 | spa_ld_load_vdev_metadata(spa_t *spa) |
9eb7b46e PZ |
4175 | { |
4176 | int error = 0; | |
4177 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 4178 | |
379ca9cf OF |
4179 | /* |
4180 | * If the 'multihost' property is set, then never allow a pool to | |
4181 | * be imported when the system hostid is zero. The exception to | |
4182 | * this rule is zdb which is always allowed to access pools. | |
4183 | */ | |
25f06d67 | 4184 | if (spa_multihost(spa) && spa_get_hostid(spa) == 0 && |
379ca9cf OF |
4185 | (spa->spa_import_flags & ZFS_IMPORT_SKIP_MMP) == 0) { |
4186 | fnvlist_add_uint64(spa->spa_load_info, | |
4187 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_NO_HOSTID); | |
4188 | return (spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO)); | |
4189 | } | |
4190 | ||
34dc7c2f BB |
4191 | /* |
4192 | * If the 'autoreplace' property is set, then post a resource notifying | |
4193 | * the ZFS DE that it should not issue any faults for unopenable | |
4194 | * devices. We also iterate over the vdevs, and post a sysevent for any | |
4195 | * unopenable vdevs so that the normal autoreplace handler can take | |
4196 | * over. | |
4197 | */ | |
4a0ee12a | 4198 | if (spa->spa_autoreplace && spa->spa_load_state != SPA_LOAD_TRYIMPORT) { |
34dc7c2f | 4199 | spa_check_removed(spa->spa_root_vdev); |
428870ff BB |
4200 | /* |
4201 | * For the import case, this is done in spa_import(), because | |
4202 | * at this point we're using the spare definitions from | |
4203 | * the MOS config, not necessarily from the userland config. | |
4204 | */ | |
4a0ee12a | 4205 | if (spa->spa_load_state != SPA_LOAD_IMPORT) { |
428870ff BB |
4206 | spa_aux_check_removed(&spa->spa_spares); |
4207 | spa_aux_check_removed(&spa->spa_l2cache); | |
4208 | } | |
4209 | } | |
34dc7c2f BB |
4210 | |
4211 | /* | |
9eb7b46e | 4212 | * Load the vdev metadata such as metaslabs, DTLs, spacemap object, etc. |
34dc7c2f | 4213 | */ |
a1d477c2 MA |
4214 | error = vdev_load(rvd); |
4215 | if (error != 0) { | |
4a0ee12a | 4216 | spa_load_failed(spa, "vdev_load failed [error=%d]", error); |
a1d477c2 MA |
4217 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error)); |
4218 | } | |
4219 | ||
93e28d66 SD |
4220 | error = spa_ld_log_spacemaps(spa); |
4221 | if (error != 0) { | |
4222 | spa_load_failed(spa, "spa_ld_log_sm_data failed [error=%d]", | |
4223 | error); | |
4224 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error)); | |
4225 | } | |
4226 | ||
34dc7c2f | 4227 | /* |
9eb7b46e | 4228 | * Propagate the leaf DTLs we just loaded all the way up the vdev tree. |
34dc7c2f | 4229 | */ |
b128c09f | 4230 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4231 | vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
b128c09f | 4232 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 4233 | |
9eb7b46e PZ |
4234 | return (0); |
4235 | } | |
4236 | ||
4237 | static int | |
4238 | spa_ld_load_dedup_tables(spa_t *spa) | |
4239 | { | |
4240 | int error = 0; | |
4241 | vdev_t *rvd = spa->spa_root_vdev; | |
4242 | ||
428870ff | 4243 | error = ddt_load(spa); |
4a0ee12a PZ |
4244 | if (error != 0) { |
4245 | spa_load_failed(spa, "ddt_load failed [error=%d]", error); | |
428870ff | 4246 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 4247 | } |
428870ff | 4248 | |
9eb7b46e PZ |
4249 | return (0); |
4250 | } | |
4251 | ||
4252 | static int | |
4253 | spa_ld_verify_logs(spa_t *spa, spa_import_type_t type, char **ereport) | |
4254 | { | |
4255 | vdev_t *rvd = spa->spa_root_vdev; | |
428870ff | 4256 | |
4a0ee12a PZ |
4257 | if (type != SPA_IMPORT_ASSEMBLE && spa_writeable(spa)) { |
4258 | boolean_t missing = spa_check_logs(spa); | |
4259 | if (missing) { | |
6cb8e530 PZ |
4260 | if (spa->spa_missing_tvds != 0) { |
4261 | spa_load_note(spa, "spa_check_logs failed " | |
4262 | "so dropping the logs"); | |
4263 | } else { | |
4264 | *ereport = FM_EREPORT_ZFS_LOG_REPLAY; | |
4265 | spa_load_failed(spa, "spa_check_logs failed"); | |
4266 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG, | |
4267 | ENXIO)); | |
4268 | } | |
4a0ee12a | 4269 | } |
428870ff BB |
4270 | } |
4271 | ||
9eb7b46e PZ |
4272 | return (0); |
4273 | } | |
4274 | ||
4275 | static int | |
4a0ee12a | 4276 | spa_ld_verify_pool_data(spa_t *spa) |
9eb7b46e PZ |
4277 | { |
4278 | int error = 0; | |
4279 | vdev_t *rvd = spa->spa_root_vdev; | |
4280 | ||
4281 | /* | |
4282 | * We've successfully opened the pool, verify that we're ready | |
4283 | * to start pushing transactions. | |
4284 | */ | |
4a0ee12a | 4285 | if (spa->spa_load_state != SPA_LOAD_TRYIMPORT) { |
9eb7b46e PZ |
4286 | error = spa_load_verify(spa); |
4287 | if (error != 0) { | |
4a0ee12a PZ |
4288 | spa_load_failed(spa, "spa_load_verify failed " |
4289 | "[error=%d]", error); | |
9eb7b46e PZ |
4290 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, |
4291 | error)); | |
4292 | } | |
4293 | } | |
4294 | ||
4295 | return (0); | |
4296 | } | |
4297 | ||
4298 | static void | |
4299 | spa_ld_claim_log_blocks(spa_t *spa) | |
4300 | { | |
4301 | dmu_tx_t *tx; | |
4302 | dsl_pool_t *dp = spa_get_dsl(spa); | |
4303 | ||
4304 | /* | |
4305 | * Claim log blocks that haven't been committed yet. | |
4306 | * This must all happen in a single txg. | |
4307 | * Note: spa_claim_max_txg is updated by spa_claim_notify(), | |
4308 | * invoked from zil_claim_log_block()'s i/o done callback. | |
4309 | * Price of rollback is that we abandon the log. | |
4310 | */ | |
4311 | spa->spa_claiming = B_TRUE; | |
4312 | ||
4313 | tx = dmu_tx_create_assigned(dp, spa_first_txg(spa)); | |
4314 | (void) dmu_objset_find_dp(dp, dp->dp_root_dir_obj, | |
4315 | zil_claim, tx, DS_FIND_CHILDREN); | |
4316 | dmu_tx_commit(tx); | |
4317 | ||
4318 | spa->spa_claiming = B_FALSE; | |
4319 | ||
4320 | spa_set_log_state(spa, SPA_LOG_GOOD); | |
4321 | } | |
4322 | ||
4323 | static void | |
6cb8e530 | 4324 | spa_ld_check_for_config_update(spa_t *spa, uint64_t config_cache_txg, |
d2734cce | 4325 | boolean_t update_config_cache) |
9eb7b46e PZ |
4326 | { |
4327 | vdev_t *rvd = spa->spa_root_vdev; | |
4328 | int need_update = B_FALSE; | |
4329 | ||
4330 | /* | |
4331 | * If the config cache is stale, or we have uninitialized | |
4332 | * metaslabs (see spa_vdev_add()), then update the config. | |
4333 | * | |
4334 | * If this is a verbatim import, trust the current | |
4335 | * in-core spa_config and update the disk labels. | |
4336 | */ | |
d2734cce | 4337 | if (update_config_cache || config_cache_txg != spa->spa_config_txg || |
4a0ee12a PZ |
4338 | spa->spa_load_state == SPA_LOAD_IMPORT || |
4339 | spa->spa_load_state == SPA_LOAD_RECOVER || | |
9eb7b46e PZ |
4340 | (spa->spa_import_flags & ZFS_IMPORT_VERBATIM)) |
4341 | need_update = B_TRUE; | |
4342 | ||
4343 | for (int c = 0; c < rvd->vdev_children; c++) | |
4344 | if (rvd->vdev_child[c]->vdev_ms_array == 0) | |
4345 | need_update = B_TRUE; | |
4346 | ||
4347 | /* | |
e1cfd73f | 4348 | * Update the config cache asynchronously in case we're the |
9eb7b46e PZ |
4349 | * root pool, in which case the config cache isn't writable yet. |
4350 | */ | |
4351 | if (need_update) | |
4352 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
4353 | } | |
4354 | ||
6cb8e530 PZ |
4355 | static void |
4356 | spa_ld_prepare_for_reload(spa_t *spa) | |
4357 | { | |
4358 | int mode = spa->spa_mode; | |
4359 | int async_suspended = spa->spa_async_suspended; | |
4360 | ||
4361 | spa_unload(spa); | |
4362 | spa_deactivate(spa); | |
4363 | spa_activate(spa, mode); | |
4364 | ||
4365 | /* | |
4366 | * We save the value of spa_async_suspended as it gets reset to 0 by | |
4367 | * spa_unload(). We want to restore it back to the original value before | |
4368 | * returning as we might be calling spa_async_resume() later. | |
4369 | */ | |
4370 | spa->spa_async_suspended = async_suspended; | |
4371 | } | |
4372 | ||
9eb7b46e | 4373 | static int |
d2734cce SD |
4374 | spa_ld_read_checkpoint_txg(spa_t *spa) |
4375 | { | |
4376 | uberblock_t checkpoint; | |
4377 | int error = 0; | |
4378 | ||
4379 | ASSERT0(spa->spa_checkpoint_txg); | |
4380 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
4381 | ||
4382 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
4383 | DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t), | |
4384 | sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint); | |
4385 | ||
4386 | if (error == ENOENT) | |
4387 | return (0); | |
4388 | ||
4389 | if (error != 0) | |
4390 | return (error); | |
4391 | ||
4392 | ASSERT3U(checkpoint.ub_txg, !=, 0); | |
4393 | ASSERT3U(checkpoint.ub_checkpoint_txg, !=, 0); | |
4394 | ASSERT3U(checkpoint.ub_timestamp, !=, 0); | |
4395 | spa->spa_checkpoint_txg = checkpoint.ub_txg; | |
4396 | spa->spa_checkpoint_info.sci_timestamp = checkpoint.ub_timestamp; | |
4397 | ||
4398 | return (0); | |
4399 | } | |
4400 | ||
4401 | static int | |
4402 | spa_ld_mos_init(spa_t *spa, spa_import_type_t type) | |
9eb7b46e PZ |
4403 | { |
4404 | int error = 0; | |
9eb7b46e | 4405 | |
4a0ee12a | 4406 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
6cb8e530 | 4407 | ASSERT(spa->spa_config_source != SPA_CONFIG_SRC_NONE); |
4a0ee12a | 4408 | |
9eb7b46e | 4409 | /* |
6cb8e530 PZ |
4410 | * Never trust the config that is provided unless we are assembling |
4411 | * a pool following a split. | |
4412 | * This means don't trust blkptrs and the vdev tree in general. This | |
4413 | * also effectively puts the spa in read-only mode since | |
4414 | * spa_writeable() checks for spa_trust_config to be true. | |
4415 | * We will later load a trusted config from the MOS. | |
9eb7b46e | 4416 | */ |
6cb8e530 PZ |
4417 | if (type != SPA_IMPORT_ASSEMBLE) |
4418 | spa->spa_trust_config = B_FALSE; | |
4419 | ||
9eb7b46e PZ |
4420 | /* |
4421 | * Parse the config provided to create a vdev tree. | |
4422 | */ | |
6cb8e530 | 4423 | error = spa_ld_parse_config(spa, type); |
9eb7b46e PZ |
4424 | if (error != 0) |
4425 | return (error); | |
4426 | ||
ca95f70d OF |
4427 | spa_import_progress_add(spa); |
4428 | ||
9eb7b46e PZ |
4429 | /* |
4430 | * Now that we have the vdev tree, try to open each vdev. This involves | |
4431 | * opening the underlying physical device, retrieving its geometry and | |
4432 | * probing the vdev with a dummy I/O. The state of each vdev will be set | |
4433 | * based on the success of those operations. After this we'll be ready | |
4434 | * to read from the vdevs. | |
4435 | */ | |
4436 | error = spa_ld_open_vdevs(spa); | |
4437 | if (error != 0) | |
4438 | return (error); | |
4439 | ||
4440 | /* | |
4441 | * Read the label of each vdev and make sure that the GUIDs stored | |
4442 | * there match the GUIDs in the config provided. | |
6cb8e530 PZ |
4443 | * If we're assembling a new pool that's been split off from an |
4444 | * existing pool, the labels haven't yet been updated so we skip | |
4445 | * validation for now. | |
9eb7b46e | 4446 | */ |
6cb8e530 PZ |
4447 | if (type != SPA_IMPORT_ASSEMBLE) { |
4448 | error = spa_ld_validate_vdevs(spa); | |
4449 | if (error != 0) | |
4450 | return (error); | |
4451 | } | |
9eb7b46e PZ |
4452 | |
4453 | /* | |
d2734cce SD |
4454 | * Read all vdev labels to find the best uberblock (i.e. latest, |
4455 | * unless spa_load_max_txg is set) and store it in spa_uberblock. We | |
4456 | * get the list of features required to read blkptrs in the MOS from | |
4457 | * the vdev label with the best uberblock and verify that our version | |
4458 | * of zfs supports them all. | |
9eb7b46e | 4459 | */ |
6cb8e530 | 4460 | error = spa_ld_select_uberblock(spa, type); |
9eb7b46e PZ |
4461 | if (error != 0) |
4462 | return (error); | |
4463 | ||
4464 | /* | |
4465 | * Pass that uberblock to the dsl_pool layer which will open the root | |
4466 | * blkptr. This blkptr points to the latest version of the MOS and will | |
4467 | * allow us to read its contents. | |
4468 | */ | |
4469 | error = spa_ld_open_rootbp(spa); | |
4470 | if (error != 0) | |
4471 | return (error); | |
4472 | ||
d2734cce SD |
4473 | return (0); |
4474 | } | |
4475 | ||
4476 | static int | |
4477 | spa_ld_checkpoint_rewind(spa_t *spa) | |
4478 | { | |
4479 | uberblock_t checkpoint; | |
4480 | int error = 0; | |
4481 | ||
4482 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
4483 | ASSERT(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT); | |
4484 | ||
4485 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
4486 | DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t), | |
4487 | sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint); | |
4488 | ||
4489 | if (error != 0) { | |
4490 | spa_load_failed(spa, "unable to retrieve checkpointed " | |
4491 | "uberblock from the MOS config [error=%d]", error); | |
4492 | ||
4493 | if (error == ENOENT) | |
4494 | error = ZFS_ERR_NO_CHECKPOINT; | |
4495 | ||
4496 | return (error); | |
4497 | } | |
4498 | ||
4499 | ASSERT3U(checkpoint.ub_txg, <, spa->spa_uberblock.ub_txg); | |
4500 | ASSERT3U(checkpoint.ub_txg, ==, checkpoint.ub_checkpoint_txg); | |
4501 | ||
4502 | /* | |
4503 | * We need to update the txg and timestamp of the checkpointed | |
4504 | * uberblock to be higher than the latest one. This ensures that | |
4505 | * the checkpointed uberblock is selected if we were to close and | |
4506 | * reopen the pool right after we've written it in the vdev labels. | |
4507 | * (also see block comment in vdev_uberblock_compare) | |
4508 | */ | |
4509 | checkpoint.ub_txg = spa->spa_uberblock.ub_txg + 1; | |
4510 | checkpoint.ub_timestamp = gethrestime_sec(); | |
4511 | ||
4512 | /* | |
4513 | * Set current uberblock to be the checkpointed uberblock. | |
4514 | */ | |
4515 | spa->spa_uberblock = checkpoint; | |
4516 | ||
4517 | /* | |
4518 | * If we are doing a normal rewind, then the pool is open for | |
4519 | * writing and we sync the "updated" checkpointed uberblock to | |
4520 | * disk. Once this is done, we've basically rewound the whole | |
4521 | * pool and there is no way back. | |
4522 | * | |
4523 | * There are cases when we don't want to attempt and sync the | |
4524 | * checkpointed uberblock to disk because we are opening a | |
4525 | * pool as read-only. Specifically, verifying the checkpointed | |
4526 | * state with zdb, and importing the checkpointed state to get | |
4527 | * a "preview" of its content. | |
4528 | */ | |
4529 | if (spa_writeable(spa)) { | |
4530 | vdev_t *rvd = spa->spa_root_vdev; | |
4531 | ||
4532 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
4533 | vdev_t *svd[SPA_SYNC_MIN_VDEVS] = { NULL }; | |
4534 | int svdcount = 0; | |
4535 | int children = rvd->vdev_children; | |
4536 | int c0 = spa_get_random(children); | |
4537 | ||
4538 | for (int c = 0; c < children; c++) { | |
4539 | vdev_t *vd = rvd->vdev_child[(c0 + c) % children]; | |
4540 | ||
4541 | /* Stop when revisiting the first vdev */ | |
4542 | if (c > 0 && svd[0] == vd) | |
4543 | break; | |
4544 | ||
4545 | if (vd->vdev_ms_array == 0 || vd->vdev_islog || | |
4546 | !vdev_is_concrete(vd)) | |
4547 | continue; | |
4548 | ||
4549 | svd[svdcount++] = vd; | |
4550 | if (svdcount == SPA_SYNC_MIN_VDEVS) | |
4551 | break; | |
4552 | } | |
4553 | error = vdev_config_sync(svd, svdcount, spa->spa_first_txg); | |
4554 | if (error == 0) | |
4555 | spa->spa_last_synced_guid = rvd->vdev_guid; | |
4556 | spa_config_exit(spa, SCL_ALL, FTAG); | |
4557 | ||
4558 | if (error != 0) { | |
4559 | spa_load_failed(spa, "failed to write checkpointed " | |
4560 | "uberblock to the vdev labels [error=%d]", error); | |
4561 | return (error); | |
4562 | } | |
4563 | } | |
4564 | ||
4565 | return (0); | |
4566 | } | |
4567 | ||
4568 | static int | |
4569 | spa_ld_mos_with_trusted_config(spa_t *spa, spa_import_type_t type, | |
4570 | boolean_t *update_config_cache) | |
4571 | { | |
4572 | int error; | |
4573 | ||
4574 | /* | |
4575 | * Parse the config for pool, open and validate vdevs, | |
4576 | * select an uberblock, and use that uberblock to open | |
4577 | * the MOS. | |
4578 | */ | |
4579 | error = spa_ld_mos_init(spa, type); | |
4580 | if (error != 0) | |
4581 | return (error); | |
4582 | ||
9eb7b46e | 4583 | /* |
6cb8e530 PZ |
4584 | * Retrieve the trusted config stored in the MOS and use it to create |
4585 | * a new, exact version of the vdev tree, then reopen all vdevs. | |
9eb7b46e | 4586 | */ |
d2734cce | 4587 | error = spa_ld_trusted_config(spa, type, B_FALSE); |
6cb8e530 | 4588 | if (error == EAGAIN) { |
d2734cce SD |
4589 | if (update_config_cache != NULL) |
4590 | *update_config_cache = B_TRUE; | |
4591 | ||
6cb8e530 PZ |
4592 | /* |
4593 | * Redo the loading process with the trusted config if it is | |
4594 | * too different from the untrusted config. | |
4595 | */ | |
4596 | spa_ld_prepare_for_reload(spa); | |
d2734cce SD |
4597 | spa_load_note(spa, "RELOADING"); |
4598 | error = spa_ld_mos_init(spa, type); | |
4599 | if (error != 0) | |
4600 | return (error); | |
4601 | ||
4602 | error = spa_ld_trusted_config(spa, type, B_TRUE); | |
4603 | if (error != 0) | |
4604 | return (error); | |
4605 | ||
6cb8e530 | 4606 | } else if (error != 0) { |
9eb7b46e | 4607 | return (error); |
6cb8e530 | 4608 | } |
9eb7b46e | 4609 | |
d2734cce SD |
4610 | return (0); |
4611 | } | |
4612 | ||
4613 | /* | |
4614 | * Load an existing storage pool, using the config provided. This config | |
4615 | * describes which vdevs are part of the pool and is later validated against | |
4616 | * partial configs present in each vdev's label and an entire copy of the | |
4617 | * config stored in the MOS. | |
4618 | */ | |
4619 | static int | |
4620 | spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport) | |
4621 | { | |
4622 | int error = 0; | |
4623 | boolean_t missing_feat_write = B_FALSE; | |
4624 | boolean_t checkpoint_rewind = | |
4625 | (spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT); | |
4626 | boolean_t update_config_cache = B_FALSE; | |
4627 | ||
4628 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
4629 | ASSERT(spa->spa_config_source != SPA_CONFIG_SRC_NONE); | |
4630 | ||
4631 | spa_load_note(spa, "LOADING"); | |
4632 | ||
4633 | error = spa_ld_mos_with_trusted_config(spa, type, &update_config_cache); | |
4634 | if (error != 0) | |
4635 | return (error); | |
4636 | ||
4637 | /* | |
4638 | * If we are rewinding to the checkpoint then we need to repeat | |
4639 | * everything we've done so far in this function but this time | |
4640 | * selecting the checkpointed uberblock and using that to open | |
4641 | * the MOS. | |
4642 | */ | |
4643 | if (checkpoint_rewind) { | |
4644 | /* | |
4645 | * If we are rewinding to the checkpoint update config cache | |
4646 | * anyway. | |
4647 | */ | |
4648 | update_config_cache = B_TRUE; | |
4649 | ||
4650 | /* | |
4651 | * Extract the checkpointed uberblock from the current MOS | |
4652 | * and use this as the pool's uberblock from now on. If the | |
4653 | * pool is imported as writeable we also write the checkpoint | |
4654 | * uberblock to the labels, making the rewind permanent. | |
4655 | */ | |
4656 | error = spa_ld_checkpoint_rewind(spa); | |
4657 | if (error != 0) | |
4658 | return (error); | |
4659 | ||
4660 | /* | |
e1cfd73f | 4661 | * Redo the loading process again with the |
d2734cce SD |
4662 | * checkpointed uberblock. |
4663 | */ | |
4664 | spa_ld_prepare_for_reload(spa); | |
4665 | spa_load_note(spa, "LOADING checkpointed uberblock"); | |
4666 | error = spa_ld_mos_with_trusted_config(spa, type, NULL); | |
4667 | if (error != 0) | |
4668 | return (error); | |
4669 | } | |
4670 | ||
4671 | /* | |
4672 | * Retrieve the checkpoint txg if the pool has a checkpoint. | |
4673 | */ | |
4674 | error = spa_ld_read_checkpoint_txg(spa); | |
4675 | if (error != 0) | |
4676 | return (error); | |
4677 | ||
9eb7b46e PZ |
4678 | /* |
4679 | * Retrieve the mapping of indirect vdevs. Those vdevs were removed | |
4680 | * from the pool and their contents were re-mapped to other vdevs. Note | |
4681 | * that everything that we read before this step must have been | |
4682 | * rewritten on concrete vdevs after the last device removal was | |
4683 | * initiated. Otherwise we could be reading from indirect vdevs before | |
4684 | * we have loaded their mappings. | |
4685 | */ | |
4686 | error = spa_ld_open_indirect_vdev_metadata(spa); | |
4687 | if (error != 0) | |
4688 | return (error); | |
4689 | ||
4690 | /* | |
4691 | * Retrieve the full list of active features from the MOS and check if | |
4692 | * they are all supported. | |
4693 | */ | |
4a0ee12a | 4694 | error = spa_ld_check_features(spa, &missing_feat_write); |
9eb7b46e PZ |
4695 | if (error != 0) |
4696 | return (error); | |
4697 | ||
4698 | /* | |
4699 | * Load several special directories from the MOS needed by the dsl_pool | |
4700 | * layer. | |
4701 | */ | |
4702 | error = spa_ld_load_special_directories(spa); | |
4703 | if (error != 0) | |
4704 | return (error); | |
4705 | ||
9eb7b46e PZ |
4706 | /* |
4707 | * Retrieve pool properties from the MOS. | |
4708 | */ | |
4709 | error = spa_ld_get_props(spa); | |
4710 | if (error != 0) | |
4711 | return (error); | |
4712 | ||
4713 | /* | |
4714 | * Retrieve the list of auxiliary devices - cache devices and spares - | |
4715 | * and open them. | |
4716 | */ | |
4717 | error = spa_ld_open_aux_vdevs(spa, type); | |
4718 | if (error != 0) | |
4719 | return (error); | |
4720 | ||
4721 | /* | |
4722 | * Load the metadata for all vdevs. Also check if unopenable devices | |
4723 | * should be autoreplaced. | |
4724 | */ | |
4a0ee12a | 4725 | error = spa_ld_load_vdev_metadata(spa); |
9eb7b46e PZ |
4726 | if (error != 0) |
4727 | return (error); | |
4728 | ||
4729 | error = spa_ld_load_dedup_tables(spa); | |
4730 | if (error != 0) | |
4731 | return (error); | |
4732 | ||
4733 | /* | |
4734 | * Verify the logs now to make sure we don't have any unexpected errors | |
4735 | * when we claim log blocks later. | |
4736 | */ | |
4737 | error = spa_ld_verify_logs(spa, type, ereport); | |
4738 | if (error != 0) | |
4739 | return (error); | |
4740 | ||
9ae529ec | 4741 | if (missing_feat_write) { |
6cb8e530 | 4742 | ASSERT(spa->spa_load_state == SPA_LOAD_TRYIMPORT); |
9ae529ec CS |
4743 | |
4744 | /* | |
4745 | * At this point, we know that we can open the pool in | |
4746 | * read-only mode but not read-write mode. We now have enough | |
4747 | * information and can return to userland. | |
4748 | */ | |
9eb7b46e PZ |
4749 | return (spa_vdev_err(spa->spa_root_vdev, VDEV_AUX_UNSUP_FEAT, |
4750 | ENOTSUP)); | |
9ae529ec CS |
4751 | } |
4752 | ||
572e2857 | 4753 | /* |
9eb7b46e PZ |
4754 | * Traverse the last txgs to make sure the pool was left off in a safe |
4755 | * state. When performing an extreme rewind, we verify the whole pool, | |
4756 | * which can take a very long time. | |
572e2857 | 4757 | */ |
4a0ee12a | 4758 | error = spa_ld_verify_pool_data(spa); |
9eb7b46e PZ |
4759 | if (error != 0) |
4760 | return (error); | |
572e2857 | 4761 | |
9eb7b46e PZ |
4762 | /* |
4763 | * Calculate the deflated space for the pool. This must be done before | |
4764 | * we write anything to the pool because we'd need to update the space | |
4765 | * accounting using the deflated sizes. | |
4766 | */ | |
4767 | spa_update_dspace(spa); | |
4768 | ||
4769 | /* | |
4770 | * We have now retrieved all the information we needed to open the | |
4771 | * pool. If we are importing the pool in read-write mode, a few | |
4772 | * additional steps must be performed to finish the import. | |
4773 | */ | |
6cb8e530 | 4774 | if (spa_writeable(spa) && (spa->spa_load_state == SPA_LOAD_RECOVER || |
428870ff | 4775 | spa->spa_load_max_txg == UINT64_MAX)) { |
6cb8e530 PZ |
4776 | uint64_t config_cache_txg = spa->spa_config_txg; |
4777 | ||
4778 | ASSERT(spa->spa_load_state != SPA_LOAD_TRYIMPORT); | |
34dc7c2f | 4779 | |
d2734cce SD |
4780 | /* |
4781 | * In case of a checkpoint rewind, log the original txg | |
4782 | * of the checkpointed uberblock. | |
4783 | */ | |
4784 | if (checkpoint_rewind) { | |
4785 | spa_history_log_internal(spa, "checkpoint rewind", | |
4786 | NULL, "rewound state to txg=%llu", | |
4787 | (u_longlong_t)spa->spa_uberblock.ub_checkpoint_txg); | |
4788 | } | |
4789 | ||
34dc7c2f | 4790 | /* |
9eb7b46e | 4791 | * Traverse the ZIL and claim all blocks. |
34dc7c2f | 4792 | */ |
9eb7b46e | 4793 | spa_ld_claim_log_blocks(spa); |
428870ff | 4794 | |
9eb7b46e PZ |
4795 | /* |
4796 | * Kick-off the syncing thread. | |
4797 | */ | |
34dc7c2f BB |
4798 | spa->spa_sync_on = B_TRUE; |
4799 | txg_sync_start(spa->spa_dsl_pool); | |
379ca9cf | 4800 | mmp_thread_start(spa); |
34dc7c2f BB |
4801 | |
4802 | /* | |
428870ff BB |
4803 | * Wait for all claims to sync. We sync up to the highest |
4804 | * claimed log block birth time so that claimed log blocks | |
4805 | * don't appear to be from the future. spa_claim_max_txg | |
9eb7b46e PZ |
4806 | * will have been set for us by ZIL traversal operations |
4807 | * performed above. | |
34dc7c2f | 4808 | */ |
428870ff | 4809 | txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg); |
34dc7c2f BB |
4810 | |
4811 | /* | |
9eb7b46e PZ |
4812 | * Check if we need to request an update of the config. On the |
4813 | * next sync, we would update the config stored in vdev labels | |
4814 | * and the cachefile (by default /etc/zfs/zpool.cache). | |
34dc7c2f | 4815 | */ |
6cb8e530 | 4816 | spa_ld_check_for_config_update(spa, config_cache_txg, |
d2734cce | 4817 | update_config_cache); |
fb5f0bc8 BB |
4818 | |
4819 | /* | |
4820 | * Check all DTLs to see if anything needs resilvering. | |
4821 | */ | |
428870ff | 4822 | if (!dsl_scan_resilvering(spa->spa_dsl_pool) && |
9eb7b46e | 4823 | vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) |
fb5f0bc8 | 4824 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
428870ff | 4825 | |
6f1ffb06 MA |
4826 | /* |
4827 | * Log the fact that we booted up (so that we can detect if | |
4828 | * we rebooted in the middle of an operation). | |
4829 | */ | |
d5e024cb | 4830 | spa_history_log_version(spa, "open", NULL); |
6f1ffb06 | 4831 | |
9b2266e3 SD |
4832 | spa_restart_removal(spa); |
4833 | spa_spawn_aux_threads(spa); | |
4834 | ||
428870ff BB |
4835 | /* |
4836 | * Delete any inconsistent datasets. | |
9b2266e3 SD |
4837 | * |
4838 | * Note: | |
4839 | * Since we may be issuing deletes for clones here, | |
4840 | * we make sure to do so after we've spawned all the | |
4841 | * auxiliary threads above (from which the livelist | |
4842 | * deletion zthr is part of). | |
428870ff BB |
4843 | */ |
4844 | (void) dmu_objset_find(spa_name(spa), | |
4845 | dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN); | |
4846 | ||
4847 | /* | |
4848 | * Clean up any stale temporary dataset userrefs. | |
4849 | */ | |
4850 | dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool); | |
a1d477c2 | 4851 | |
619f0976 GW |
4852 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
4853 | vdev_initialize_restart(spa->spa_root_vdev); | |
1b939560 BB |
4854 | vdev_trim_restart(spa->spa_root_vdev); |
4855 | vdev_autotrim_restart(spa); | |
619f0976 | 4856 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
4857 | } |
4858 | ||
ca95f70d | 4859 | spa_import_progress_remove(spa_guid(spa)); |
4a0ee12a PZ |
4860 | spa_load_note(spa, "LOADED"); |
4861 | ||
428870ff BB |
4862 | return (0); |
4863 | } | |
34dc7c2f | 4864 | |
428870ff | 4865 | static int |
6cb8e530 | 4866 | spa_load_retry(spa_t *spa, spa_load_state_t state) |
428870ff | 4867 | { |
572e2857 BB |
4868 | int mode = spa->spa_mode; |
4869 | ||
428870ff BB |
4870 | spa_unload(spa); |
4871 | spa_deactivate(spa); | |
4872 | ||
dea377c0 | 4873 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg - 1; |
428870ff | 4874 | |
572e2857 | 4875 | spa_activate(spa, mode); |
428870ff BB |
4876 | spa_async_suspend(spa); |
4877 | ||
4a0ee12a PZ |
4878 | spa_load_note(spa, "spa_load_retry: rewind, max txg: %llu", |
4879 | (u_longlong_t)spa->spa_load_max_txg); | |
4880 | ||
6cb8e530 | 4881 | return (spa_load(spa, state, SPA_IMPORT_EXISTING)); |
428870ff BB |
4882 | } |
4883 | ||
9ae529ec CS |
4884 | /* |
4885 | * If spa_load() fails this function will try loading prior txg's. If | |
4886 | * 'state' is SPA_LOAD_RECOVER and one of these loads succeeds the pool | |
4887 | * will be rewound to that txg. If 'state' is not SPA_LOAD_RECOVER this | |
4888 | * function will not rewind the pool and will return the same error as | |
4889 | * spa_load(). | |
4890 | */ | |
428870ff | 4891 | static int |
6cb8e530 PZ |
4892 | spa_load_best(spa_t *spa, spa_load_state_t state, uint64_t max_request, |
4893 | int rewind_flags) | |
428870ff | 4894 | { |
9ae529ec | 4895 | nvlist_t *loadinfo = NULL; |
428870ff BB |
4896 | nvlist_t *config = NULL; |
4897 | int load_error, rewind_error; | |
4898 | uint64_t safe_rewind_txg; | |
4899 | uint64_t min_txg; | |
4900 | ||
4901 | if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) { | |
4902 | spa->spa_load_max_txg = spa->spa_load_txg; | |
4903 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
4904 | } else { | |
4905 | spa->spa_load_max_txg = max_request; | |
dea377c0 MA |
4906 | if (max_request != UINT64_MAX) |
4907 | spa->spa_extreme_rewind = B_TRUE; | |
428870ff BB |
4908 | } |
4909 | ||
6cb8e530 | 4910 | load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING); |
428870ff BB |
4911 | if (load_error == 0) |
4912 | return (0); | |
d2734cce SD |
4913 | if (load_error == ZFS_ERR_NO_CHECKPOINT) { |
4914 | /* | |
4915 | * When attempting checkpoint-rewind on a pool with no | |
4916 | * checkpoint, we should not attempt to load uberblocks | |
4917 | * from previous txgs when spa_load fails. | |
4918 | */ | |
4919 | ASSERT(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT); | |
ca95f70d | 4920 | spa_import_progress_remove(spa_guid(spa)); |
d2734cce SD |
4921 | return (load_error); |
4922 | } | |
428870ff BB |
4923 | |
4924 | if (spa->spa_root_vdev != NULL) | |
4925 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); | |
4926 | ||
4927 | spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg; | |
4928 | spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp; | |
4929 | ||
4930 | if (rewind_flags & ZPOOL_NEVER_REWIND) { | |
4931 | nvlist_free(config); | |
ca95f70d | 4932 | spa_import_progress_remove(spa_guid(spa)); |
428870ff BB |
4933 | return (load_error); |
4934 | } | |
4935 | ||
9ae529ec CS |
4936 | if (state == SPA_LOAD_RECOVER) { |
4937 | /* Price of rolling back is discarding txgs, including log */ | |
428870ff | 4938 | spa_set_log_state(spa, SPA_LOG_CLEAR); |
9ae529ec CS |
4939 | } else { |
4940 | /* | |
4941 | * If we aren't rolling back save the load info from our first | |
4942 | * import attempt so that we can restore it after attempting | |
4943 | * to rewind. | |
4944 | */ | |
4945 | loadinfo = spa->spa_load_info; | |
4946 | spa->spa_load_info = fnvlist_alloc(); | |
4947 | } | |
428870ff BB |
4948 | |
4949 | spa->spa_load_max_txg = spa->spa_last_ubsync_txg; | |
4950 | safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE; | |
4951 | min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ? | |
4952 | TXG_INITIAL : safe_rewind_txg; | |
4953 | ||
4954 | /* | |
4955 | * Continue as long as we're finding errors, we're still within | |
4956 | * the acceptable rewind range, and we're still finding uberblocks | |
4957 | */ | |
4958 | while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg && | |
4959 | spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) { | |
4960 | if (spa->spa_load_max_txg < safe_rewind_txg) | |
4961 | spa->spa_extreme_rewind = B_TRUE; | |
6cb8e530 | 4962 | rewind_error = spa_load_retry(spa, state); |
428870ff BB |
4963 | } |
4964 | ||
428870ff BB |
4965 | spa->spa_extreme_rewind = B_FALSE; |
4966 | spa->spa_load_max_txg = UINT64_MAX; | |
4967 | ||
4968 | if (config && (rewind_error || state != SPA_LOAD_RECOVER)) | |
4969 | spa_config_set(spa, config); | |
ee6370a7 | 4970 | else |
4971 | nvlist_free(config); | |
428870ff | 4972 | |
9ae529ec CS |
4973 | if (state == SPA_LOAD_RECOVER) { |
4974 | ASSERT3P(loadinfo, ==, NULL); | |
ca95f70d | 4975 | spa_import_progress_remove(spa_guid(spa)); |
9ae529ec CS |
4976 | return (rewind_error); |
4977 | } else { | |
4978 | /* Store the rewind info as part of the initial load info */ | |
4979 | fnvlist_add_nvlist(loadinfo, ZPOOL_CONFIG_REWIND_INFO, | |
4980 | spa->spa_load_info); | |
4981 | ||
4982 | /* Restore the initial load info */ | |
4983 | fnvlist_free(spa->spa_load_info); | |
4984 | spa->spa_load_info = loadinfo; | |
4985 | ||
ca95f70d | 4986 | spa_import_progress_remove(spa_guid(spa)); |
9ae529ec CS |
4987 | return (load_error); |
4988 | } | |
34dc7c2f BB |
4989 | } |
4990 | ||
4991 | /* | |
4992 | * Pool Open/Import | |
4993 | * | |
4994 | * The import case is identical to an open except that the configuration is sent | |
4995 | * down from userland, instead of grabbed from the configuration cache. For the | |
4996 | * case of an open, the pool configuration will exist in the | |
4997 | * POOL_STATE_UNINITIALIZED state. | |
4998 | * | |
4999 | * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
5000 | * the same time open the pool, without having to keep around the spa_t in some | |
5001 | * ambiguous state. | |
5002 | */ | |
5003 | static int | |
428870ff BB |
5004 | spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, |
5005 | nvlist_t **config) | |
34dc7c2f BB |
5006 | { |
5007 | spa_t *spa; | |
572e2857 | 5008 | spa_load_state_t state = SPA_LOAD_OPEN; |
34dc7c2f | 5009 | int error; |
34dc7c2f | 5010 | int locked = B_FALSE; |
526af785 | 5011 | int firstopen = B_FALSE; |
34dc7c2f BB |
5012 | |
5013 | *spapp = NULL; | |
5014 | ||
5015 | /* | |
5016 | * As disgusting as this is, we need to support recursive calls to this | |
5017 | * function because dsl_dir_open() is called during spa_load(), and ends | |
5018 | * up calling spa_open() again. The real fix is to figure out how to | |
5019 | * avoid dsl_dir_open() calling this in the first place. | |
5020 | */ | |
c25b8f99 | 5021 | if (MUTEX_NOT_HELD(&spa_namespace_lock)) { |
34dc7c2f BB |
5022 | mutex_enter(&spa_namespace_lock); |
5023 | locked = B_TRUE; | |
5024 | } | |
5025 | ||
5026 | if ((spa = spa_lookup(pool)) == NULL) { | |
5027 | if (locked) | |
5028 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 5029 | return (SET_ERROR(ENOENT)); |
34dc7c2f | 5030 | } |
428870ff | 5031 | |
34dc7c2f | 5032 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) { |
8a393be3 | 5033 | zpool_load_policy_t policy; |
428870ff | 5034 | |
526af785 PJD |
5035 | firstopen = B_TRUE; |
5036 | ||
8a393be3 | 5037 | zpool_get_load_policy(nvpolicy ? nvpolicy : spa->spa_config, |
428870ff | 5038 | &policy); |
8a393be3 | 5039 | if (policy.zlp_rewind & ZPOOL_DO_REWIND) |
428870ff | 5040 | state = SPA_LOAD_RECOVER; |
34dc7c2f | 5041 | |
fb5f0bc8 | 5042 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 5043 | |
428870ff BB |
5044 | if (state != SPA_LOAD_RECOVER) |
5045 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
6cb8e530 | 5046 | spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE; |
428870ff | 5047 | |
4a0ee12a | 5048 | zfs_dbgmsg("spa_open_common: opening %s", pool); |
8a393be3 PZ |
5049 | error = spa_load_best(spa, state, policy.zlp_txg, |
5050 | policy.zlp_rewind); | |
34dc7c2f BB |
5051 | |
5052 | if (error == EBADF) { | |
5053 | /* | |
5054 | * If vdev_validate() returns failure (indicated by | |
5055 | * EBADF), it indicates that one of the vdevs indicates | |
5056 | * that the pool has been exported or destroyed. If | |
5057 | * this is the case, the config cache is out of sync and | |
5058 | * we should remove the pool from the namespace. | |
5059 | */ | |
34dc7c2f BB |
5060 | spa_unload(spa); |
5061 | spa_deactivate(spa); | |
a1d477c2 | 5062 | spa_write_cachefile(spa, B_TRUE, B_TRUE); |
34dc7c2f | 5063 | spa_remove(spa); |
34dc7c2f BB |
5064 | if (locked) |
5065 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 5066 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
5067 | } |
5068 | ||
5069 | if (error) { | |
5070 | /* | |
5071 | * We can't open the pool, but we still have useful | |
5072 | * information: the state of each vdev after the | |
5073 | * attempted vdev_open(). Return this to the user. | |
5074 | */ | |
572e2857 | 5075 | if (config != NULL && spa->spa_config) { |
428870ff | 5076 | VERIFY(nvlist_dup(spa->spa_config, config, |
79c76d5b | 5077 | KM_SLEEP) == 0); |
572e2857 BB |
5078 | VERIFY(nvlist_add_nvlist(*config, |
5079 | ZPOOL_CONFIG_LOAD_INFO, | |
5080 | spa->spa_load_info) == 0); | |
5081 | } | |
34dc7c2f BB |
5082 | spa_unload(spa); |
5083 | spa_deactivate(spa); | |
428870ff | 5084 | spa->spa_last_open_failed = error; |
34dc7c2f BB |
5085 | if (locked) |
5086 | mutex_exit(&spa_namespace_lock); | |
5087 | *spapp = NULL; | |
5088 | return (error); | |
34dc7c2f | 5089 | } |
34dc7c2f BB |
5090 | } |
5091 | ||
5092 | spa_open_ref(spa, tag); | |
5093 | ||
b128c09f | 5094 | if (config != NULL) |
34dc7c2f | 5095 | *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f | 5096 | |
572e2857 BB |
5097 | /* |
5098 | * If we've recovered the pool, pass back any information we | |
5099 | * gathered while doing the load. | |
5100 | */ | |
5101 | if (state == SPA_LOAD_RECOVER) { | |
5102 | VERIFY(nvlist_add_nvlist(*config, ZPOOL_CONFIG_LOAD_INFO, | |
5103 | spa->spa_load_info) == 0); | |
5104 | } | |
5105 | ||
428870ff BB |
5106 | if (locked) { |
5107 | spa->spa_last_open_failed = 0; | |
5108 | spa->spa_last_ubsync_txg = 0; | |
5109 | spa->spa_load_txg = 0; | |
5110 | mutex_exit(&spa_namespace_lock); | |
5111 | } | |
5112 | ||
526af785 | 5113 | if (firstopen) |
a0bd735a | 5114 | zvol_create_minors(spa, spa_name(spa), B_TRUE); |
526af785 | 5115 | |
428870ff BB |
5116 | *spapp = spa; |
5117 | ||
34dc7c2f BB |
5118 | return (0); |
5119 | } | |
5120 | ||
428870ff BB |
5121 | int |
5122 | spa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy, | |
5123 | nvlist_t **config) | |
5124 | { | |
5125 | return (spa_open_common(name, spapp, tag, policy, config)); | |
5126 | } | |
5127 | ||
34dc7c2f BB |
5128 | int |
5129 | spa_open(const char *name, spa_t **spapp, void *tag) | |
5130 | { | |
428870ff | 5131 | return (spa_open_common(name, spapp, tag, NULL, NULL)); |
34dc7c2f BB |
5132 | } |
5133 | ||
5134 | /* | |
5135 | * Lookup the given spa_t, incrementing the inject count in the process, | |
5136 | * preventing it from being exported or destroyed. | |
5137 | */ | |
5138 | spa_t * | |
5139 | spa_inject_addref(char *name) | |
5140 | { | |
5141 | spa_t *spa; | |
5142 | ||
5143 | mutex_enter(&spa_namespace_lock); | |
5144 | if ((spa = spa_lookup(name)) == NULL) { | |
5145 | mutex_exit(&spa_namespace_lock); | |
5146 | return (NULL); | |
5147 | } | |
5148 | spa->spa_inject_ref++; | |
5149 | mutex_exit(&spa_namespace_lock); | |
5150 | ||
5151 | return (spa); | |
5152 | } | |
5153 | ||
5154 | void | |
5155 | spa_inject_delref(spa_t *spa) | |
5156 | { | |
5157 | mutex_enter(&spa_namespace_lock); | |
5158 | spa->spa_inject_ref--; | |
5159 | mutex_exit(&spa_namespace_lock); | |
5160 | } | |
5161 | ||
5162 | /* | |
5163 | * Add spares device information to the nvlist. | |
5164 | */ | |
5165 | static void | |
5166 | spa_add_spares(spa_t *spa, nvlist_t *config) | |
5167 | { | |
5168 | nvlist_t **spares; | |
5169 | uint_t i, nspares; | |
5170 | nvlist_t *nvroot; | |
5171 | uint64_t guid; | |
5172 | vdev_stat_t *vs; | |
5173 | uint_t vsc; | |
5174 | uint64_t pool; | |
5175 | ||
9babb374 BB |
5176 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
5177 | ||
34dc7c2f BB |
5178 | if (spa->spa_spares.sav_count == 0) |
5179 | return; | |
5180 | ||
5181 | VERIFY(nvlist_lookup_nvlist(config, | |
5182 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
5183 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
5184 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
5185 | if (nspares != 0) { | |
5186 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
5187 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
5188 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
5189 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
5190 | ||
5191 | /* | |
5192 | * Go through and find any spares which have since been | |
5193 | * repurposed as an active spare. If this is the case, update | |
5194 | * their status appropriately. | |
5195 | */ | |
5196 | for (i = 0; i < nspares; i++) { | |
5197 | VERIFY(nvlist_lookup_uint64(spares[i], | |
5198 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
b128c09f BB |
5199 | if (spa_spare_exists(guid, &pool, NULL) && |
5200 | pool != 0ULL) { | |
34dc7c2f | 5201 | VERIFY(nvlist_lookup_uint64_array( |
428870ff | 5202 | spares[i], ZPOOL_CONFIG_VDEV_STATS, |
34dc7c2f BB |
5203 | (uint64_t **)&vs, &vsc) == 0); |
5204 | vs->vs_state = VDEV_STATE_CANT_OPEN; | |
5205 | vs->vs_aux = VDEV_AUX_SPARED; | |
5206 | } | |
5207 | } | |
5208 | } | |
5209 | } | |
5210 | ||
5211 | /* | |
5212 | * Add l2cache device information to the nvlist, including vdev stats. | |
5213 | */ | |
5214 | static void | |
5215 | spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
5216 | { | |
5217 | nvlist_t **l2cache; | |
5218 | uint_t i, j, nl2cache; | |
5219 | nvlist_t *nvroot; | |
5220 | uint64_t guid; | |
5221 | vdev_t *vd; | |
5222 | vdev_stat_t *vs; | |
5223 | uint_t vsc; | |
5224 | ||
9babb374 BB |
5225 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
5226 | ||
34dc7c2f BB |
5227 | if (spa->spa_l2cache.sav_count == 0) |
5228 | return; | |
5229 | ||
34dc7c2f BB |
5230 | VERIFY(nvlist_lookup_nvlist(config, |
5231 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
5232 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
5233 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
5234 | if (nl2cache != 0) { | |
5235 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
5236 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
5237 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
5238 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
5239 | ||
5240 | /* | |
5241 | * Update level 2 cache device stats. | |
5242 | */ | |
5243 | ||
5244 | for (i = 0; i < nl2cache; i++) { | |
5245 | VERIFY(nvlist_lookup_uint64(l2cache[i], | |
5246 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
5247 | ||
5248 | vd = NULL; | |
5249 | for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
5250 | if (guid == | |
5251 | spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
5252 | vd = spa->spa_l2cache.sav_vdevs[j]; | |
5253 | break; | |
5254 | } | |
5255 | } | |
5256 | ASSERT(vd != NULL); | |
5257 | ||
5258 | VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
428870ff BB |
5259 | ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) |
5260 | == 0); | |
34dc7c2f | 5261 | vdev_get_stats(vd, vs); |
193a37cb TH |
5262 | vdev_config_generate_stats(vd, l2cache[i]); |
5263 | ||
34dc7c2f BB |
5264 | } |
5265 | } | |
34dc7c2f BB |
5266 | } |
5267 | ||
9ae529ec | 5268 | static void |
417104bd | 5269 | spa_feature_stats_from_disk(spa_t *spa, nvlist_t *features) |
9ae529ec | 5270 | { |
9ae529ec CS |
5271 | zap_cursor_t zc; |
5272 | zap_attribute_t za; | |
5273 | ||
9ae529ec CS |
5274 | if (spa->spa_feat_for_read_obj != 0) { |
5275 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
5276 | spa->spa_feat_for_read_obj); | |
5277 | zap_cursor_retrieve(&zc, &za) == 0; | |
5278 | zap_cursor_advance(&zc)) { | |
5279 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
5280 | za.za_num_integers == 1); | |
417104bd | 5281 | VERIFY0(nvlist_add_uint64(features, za.za_name, |
9ae529ec CS |
5282 | za.za_first_integer)); |
5283 | } | |
5284 | zap_cursor_fini(&zc); | |
5285 | } | |
5286 | ||
5287 | if (spa->spa_feat_for_write_obj != 0) { | |
5288 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
5289 | spa->spa_feat_for_write_obj); | |
5290 | zap_cursor_retrieve(&zc, &za) == 0; | |
5291 | zap_cursor_advance(&zc)) { | |
5292 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
5293 | za.za_num_integers == 1); | |
417104bd | 5294 | VERIFY0(nvlist_add_uint64(features, za.za_name, |
9ae529ec CS |
5295 | za.za_first_integer)); |
5296 | } | |
5297 | zap_cursor_fini(&zc); | |
5298 | } | |
417104bd NB |
5299 | } |
5300 | ||
5301 | static void | |
5302 | spa_feature_stats_from_cache(spa_t *spa, nvlist_t *features) | |
5303 | { | |
5304 | int i; | |
5305 | ||
5306 | for (i = 0; i < SPA_FEATURES; i++) { | |
5307 | zfeature_info_t feature = spa_feature_table[i]; | |
5308 | uint64_t refcount; | |
5309 | ||
5310 | if (feature_get_refcount(spa, &feature, &refcount) != 0) | |
5311 | continue; | |
5312 | ||
5313 | VERIFY0(nvlist_add_uint64(features, feature.fi_guid, refcount)); | |
5314 | } | |
5315 | } | |
5316 | ||
5317 | /* | |
5318 | * Store a list of pool features and their reference counts in the | |
5319 | * config. | |
5320 | * | |
5321 | * The first time this is called on a spa, allocate a new nvlist, fetch | |
5322 | * the pool features and reference counts from disk, then save the list | |
5323 | * in the spa. In subsequent calls on the same spa use the saved nvlist | |
5324 | * and refresh its values from the cached reference counts. This | |
5325 | * ensures we don't block here on I/O on a suspended pool so 'zpool | |
5326 | * clear' can resume the pool. | |
5327 | */ | |
5328 | static void | |
5329 | spa_add_feature_stats(spa_t *spa, nvlist_t *config) | |
5330 | { | |
4eb30c68 | 5331 | nvlist_t *features; |
417104bd NB |
5332 | |
5333 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); | |
5334 | ||
4eb30c68 NB |
5335 | mutex_enter(&spa->spa_feat_stats_lock); |
5336 | features = spa->spa_feat_stats; | |
5337 | ||
417104bd NB |
5338 | if (features != NULL) { |
5339 | spa_feature_stats_from_cache(spa, features); | |
5340 | } else { | |
5341 | VERIFY0(nvlist_alloc(&features, NV_UNIQUE_NAME, KM_SLEEP)); | |
5342 | spa->spa_feat_stats = features; | |
5343 | spa_feature_stats_from_disk(spa, features); | |
5344 | } | |
9ae529ec | 5345 | |
417104bd NB |
5346 | VERIFY0(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS, |
5347 | features)); | |
4eb30c68 NB |
5348 | |
5349 | mutex_exit(&spa->spa_feat_stats_lock); | |
9ae529ec CS |
5350 | } |
5351 | ||
34dc7c2f | 5352 | int |
9ae529ec CS |
5353 | spa_get_stats(const char *name, nvlist_t **config, |
5354 | char *altroot, size_t buflen) | |
34dc7c2f BB |
5355 | { |
5356 | int error; | |
5357 | spa_t *spa; | |
5358 | ||
5359 | *config = NULL; | |
428870ff | 5360 | error = spa_open_common(name, &spa, FTAG, NULL, config); |
34dc7c2f | 5361 | |
9babb374 BB |
5362 | if (spa != NULL) { |
5363 | /* | |
5364 | * This still leaves a window of inconsistency where the spares | |
5365 | * or l2cache devices could change and the config would be | |
5366 | * self-inconsistent. | |
5367 | */ | |
5368 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
34dc7c2f | 5369 | |
9babb374 | 5370 | if (*config != NULL) { |
572e2857 BB |
5371 | uint64_t loadtimes[2]; |
5372 | ||
5373 | loadtimes[0] = spa->spa_loaded_ts.tv_sec; | |
5374 | loadtimes[1] = spa->spa_loaded_ts.tv_nsec; | |
5375 | VERIFY(nvlist_add_uint64_array(*config, | |
5376 | ZPOOL_CONFIG_LOADED_TIME, loadtimes, 2) == 0); | |
5377 | ||
b128c09f | 5378 | VERIFY(nvlist_add_uint64(*config, |
9babb374 BB |
5379 | ZPOOL_CONFIG_ERRCOUNT, |
5380 | spa_get_errlog_size(spa)) == 0); | |
5381 | ||
cec3a0a1 | 5382 | if (spa_suspended(spa)) { |
9babb374 BB |
5383 | VERIFY(nvlist_add_uint64(*config, |
5384 | ZPOOL_CONFIG_SUSPENDED, | |
5385 | spa->spa_failmode) == 0); | |
cec3a0a1 OF |
5386 | VERIFY(nvlist_add_uint64(*config, |
5387 | ZPOOL_CONFIG_SUSPENDED_REASON, | |
5388 | spa->spa_suspended) == 0); | |
5389 | } | |
b128c09f | 5390 | |
9babb374 BB |
5391 | spa_add_spares(spa, *config); |
5392 | spa_add_l2cache(spa, *config); | |
9ae529ec | 5393 | spa_add_feature_stats(spa, *config); |
9babb374 | 5394 | } |
34dc7c2f BB |
5395 | } |
5396 | ||
5397 | /* | |
5398 | * We want to get the alternate root even for faulted pools, so we cheat | |
5399 | * and call spa_lookup() directly. | |
5400 | */ | |
5401 | if (altroot) { | |
5402 | if (spa == NULL) { | |
5403 | mutex_enter(&spa_namespace_lock); | |
5404 | spa = spa_lookup(name); | |
5405 | if (spa) | |
5406 | spa_altroot(spa, altroot, buflen); | |
5407 | else | |
5408 | altroot[0] = '\0'; | |
5409 | spa = NULL; | |
5410 | mutex_exit(&spa_namespace_lock); | |
5411 | } else { | |
5412 | spa_altroot(spa, altroot, buflen); | |
5413 | } | |
5414 | } | |
5415 | ||
9babb374 BB |
5416 | if (spa != NULL) { |
5417 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
34dc7c2f | 5418 | spa_close(spa, FTAG); |
9babb374 | 5419 | } |
34dc7c2f BB |
5420 | |
5421 | return (error); | |
5422 | } | |
5423 | ||
5424 | /* | |
5425 | * Validate that the auxiliary device array is well formed. We must have an | |
5426 | * array of nvlists, each which describes a valid leaf vdev. If this is an | |
5427 | * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
5428 | * specified, as long as they are well-formed. | |
5429 | */ | |
5430 | static int | |
5431 | spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, | |
5432 | spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
5433 | vdev_labeltype_t label) | |
5434 | { | |
5435 | nvlist_t **dev; | |
5436 | uint_t i, ndev; | |
5437 | vdev_t *vd; | |
5438 | int error; | |
5439 | ||
b128c09f BB |
5440 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
5441 | ||
34dc7c2f BB |
5442 | /* |
5443 | * It's acceptable to have no devs specified. | |
5444 | */ | |
5445 | if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) | |
5446 | return (0); | |
5447 | ||
5448 | if (ndev == 0) | |
2e528b49 | 5449 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
5450 | |
5451 | /* | |
5452 | * Make sure the pool is formatted with a version that supports this | |
5453 | * device type. | |
5454 | */ | |
5455 | if (spa_version(spa) < version) | |
2e528b49 | 5456 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
5457 | |
5458 | /* | |
5459 | * Set the pending device list so we correctly handle device in-use | |
5460 | * checking. | |
5461 | */ | |
5462 | sav->sav_pending = dev; | |
5463 | sav->sav_npending = ndev; | |
5464 | ||
5465 | for (i = 0; i < ndev; i++) { | |
5466 | if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
5467 | mode)) != 0) | |
5468 | goto out; | |
5469 | ||
5470 | if (!vd->vdev_ops->vdev_op_leaf) { | |
5471 | vdev_free(vd); | |
2e528b49 | 5472 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
5473 | goto out; |
5474 | } | |
5475 | ||
34dc7c2f BB |
5476 | vd->vdev_top = vd; |
5477 | ||
5478 | if ((error = vdev_open(vd)) == 0 && | |
5479 | (error = vdev_label_init(vd, crtxg, label)) == 0) { | |
5480 | VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
5481 | vd->vdev_guid) == 0); | |
5482 | } | |
5483 | ||
5484 | vdev_free(vd); | |
5485 | ||
5486 | if (error && | |
5487 | (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
5488 | goto out; | |
5489 | else | |
5490 | error = 0; | |
5491 | } | |
5492 | ||
5493 | out: | |
5494 | sav->sav_pending = NULL; | |
5495 | sav->sav_npending = 0; | |
5496 | return (error); | |
5497 | } | |
5498 | ||
5499 | static int | |
5500 | spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
5501 | { | |
5502 | int error; | |
5503 | ||
b128c09f BB |
5504 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
5505 | ||
34dc7c2f BB |
5506 | if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, |
5507 | &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
5508 | VDEV_LABEL_SPARE)) != 0) { | |
5509 | return (error); | |
5510 | } | |
5511 | ||
5512 | return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
5513 | &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
5514 | VDEV_LABEL_L2CACHE)); | |
5515 | } | |
5516 | ||
5517 | static void | |
5518 | spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
5519 | const char *config) | |
5520 | { | |
5521 | int i; | |
5522 | ||
5523 | if (sav->sav_config != NULL) { | |
5524 | nvlist_t **olddevs; | |
5525 | uint_t oldndevs; | |
5526 | nvlist_t **newdevs; | |
5527 | ||
5528 | /* | |
4e33ba4c | 5529 | * Generate new dev list by concatenating with the |
34dc7c2f BB |
5530 | * current dev list. |
5531 | */ | |
5532 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
5533 | &olddevs, &oldndevs) == 0); | |
5534 | ||
5535 | newdevs = kmem_alloc(sizeof (void *) * | |
79c76d5b | 5536 | (ndevs + oldndevs), KM_SLEEP); |
34dc7c2f BB |
5537 | for (i = 0; i < oldndevs; i++) |
5538 | VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
79c76d5b | 5539 | KM_SLEEP) == 0); |
34dc7c2f BB |
5540 | for (i = 0; i < ndevs; i++) |
5541 | VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
79c76d5b | 5542 | KM_SLEEP) == 0); |
34dc7c2f BB |
5543 | |
5544 | VERIFY(nvlist_remove(sav->sav_config, config, | |
5545 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
5546 | ||
5547 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
5548 | config, newdevs, ndevs + oldndevs) == 0); | |
5549 | for (i = 0; i < oldndevs + ndevs; i++) | |
5550 | nvlist_free(newdevs[i]); | |
5551 | kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
5552 | } else { | |
5553 | /* | |
5554 | * Generate a new dev list. | |
5555 | */ | |
5556 | VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
79c76d5b | 5557 | KM_SLEEP) == 0); |
34dc7c2f BB |
5558 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, |
5559 | devs, ndevs) == 0); | |
5560 | } | |
5561 | } | |
5562 | ||
5563 | /* | |
5564 | * Stop and drop level 2 ARC devices | |
5565 | */ | |
5566 | void | |
5567 | spa_l2cache_drop(spa_t *spa) | |
5568 | { | |
5569 | vdev_t *vd; | |
5570 | int i; | |
5571 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
5572 | ||
5573 | for (i = 0; i < sav->sav_count; i++) { | |
5574 | uint64_t pool; | |
5575 | ||
5576 | vd = sav->sav_vdevs[i]; | |
5577 | ASSERT(vd != NULL); | |
5578 | ||
fb5f0bc8 BB |
5579 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
5580 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 5581 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
5582 | } |
5583 | } | |
5584 | ||
b5256303 TC |
5585 | /* |
5586 | * Verify encryption parameters for spa creation. If we are encrypting, we must | |
5587 | * have the encryption feature flag enabled. | |
5588 | */ | |
5589 | static int | |
5590 | spa_create_check_encryption_params(dsl_crypto_params_t *dcp, | |
5591 | boolean_t has_encryption) | |
5592 | { | |
5593 | if (dcp->cp_crypt != ZIO_CRYPT_OFF && | |
5594 | dcp->cp_crypt != ZIO_CRYPT_INHERIT && | |
5595 | !has_encryption) | |
5596 | return (SET_ERROR(ENOTSUP)); | |
5597 | ||
1fff937a | 5598 | return (dmu_objset_create_crypt_check(NULL, dcp, NULL)); |
b5256303 TC |
5599 | } |
5600 | ||
34dc7c2f BB |
5601 | /* |
5602 | * Pool Creation | |
5603 | */ | |
5604 | int | |
5605 | spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, | |
b5256303 | 5606 | nvlist_t *zplprops, dsl_crypto_params_t *dcp) |
34dc7c2f BB |
5607 | { |
5608 | spa_t *spa; | |
5609 | char *altroot = NULL; | |
5610 | vdev_t *rvd; | |
5611 | dsl_pool_t *dp; | |
5612 | dmu_tx_t *tx; | |
9babb374 | 5613 | int error = 0; |
34dc7c2f BB |
5614 | uint64_t txg = TXG_INITIAL; |
5615 | nvlist_t **spares, **l2cache; | |
5616 | uint_t nspares, nl2cache; | |
52ce99dd | 5617 | uint64_t version, obj; |
9ae529ec | 5618 | boolean_t has_features; |
b5256303 TC |
5619 | boolean_t has_encryption; |
5620 | spa_feature_t feat; | |
5621 | char *feat_name; | |
83e9986f RY |
5622 | char *poolname; |
5623 | nvlist_t *nvl; | |
5624 | ||
cc99f275 DB |
5625 | if (props == NULL || |
5626 | nvlist_lookup_string(props, "tname", &poolname) != 0) | |
83e9986f | 5627 | poolname = (char *)pool; |
34dc7c2f BB |
5628 | |
5629 | /* | |
5630 | * If this pool already exists, return failure. | |
5631 | */ | |
5632 | mutex_enter(&spa_namespace_lock); | |
83e9986f | 5633 | if (spa_lookup(poolname) != NULL) { |
34dc7c2f | 5634 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 5635 | return (SET_ERROR(EEXIST)); |
34dc7c2f BB |
5636 | } |
5637 | ||
5638 | /* | |
5639 | * Allocate a new spa_t structure. | |
5640 | */ | |
83e9986f RY |
5641 | nvl = fnvlist_alloc(); |
5642 | fnvlist_add_string(nvl, ZPOOL_CONFIG_POOL_NAME, pool); | |
34dc7c2f BB |
5643 | (void) nvlist_lookup_string(props, |
5644 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
83e9986f RY |
5645 | spa = spa_add(poolname, nvl, altroot); |
5646 | fnvlist_free(nvl); | |
fb5f0bc8 | 5647 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 5648 | |
34dc7c2f | 5649 | if (props && (error = spa_prop_validate(spa, props))) { |
34dc7c2f BB |
5650 | spa_deactivate(spa); |
5651 | spa_remove(spa); | |
b128c09f | 5652 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
5653 | return (error); |
5654 | } | |
5655 | ||
83e9986f RY |
5656 | /* |
5657 | * Temporary pool names should never be written to disk. | |
5658 | */ | |
5659 | if (poolname != pool) | |
5660 | spa->spa_import_flags |= ZFS_IMPORT_TEMP_NAME; | |
5661 | ||
9ae529ec | 5662 | has_features = B_FALSE; |
b5256303 | 5663 | has_encryption = B_FALSE; |
1c27024e | 5664 | for (nvpair_t *elem = nvlist_next_nvpair(props, NULL); |
9ae529ec | 5665 | elem != NULL; elem = nvlist_next_nvpair(props, elem)) { |
b5256303 | 5666 | if (zpool_prop_feature(nvpair_name(elem))) { |
9ae529ec | 5667 | has_features = B_TRUE; |
b5256303 TC |
5668 | |
5669 | feat_name = strchr(nvpair_name(elem), '@') + 1; | |
5670 | VERIFY0(zfeature_lookup_name(feat_name, &feat)); | |
5671 | if (feat == SPA_FEATURE_ENCRYPTION) | |
5672 | has_encryption = B_TRUE; | |
5673 | } | |
5674 | } | |
5675 | ||
5676 | /* verify encryption params, if they were provided */ | |
5677 | if (dcp != NULL) { | |
5678 | error = spa_create_check_encryption_params(dcp, has_encryption); | |
5679 | if (error != 0) { | |
5680 | spa_deactivate(spa); | |
5681 | spa_remove(spa); | |
5682 | mutex_exit(&spa_namespace_lock); | |
5683 | return (error); | |
5684 | } | |
9ae529ec CS |
5685 | } |
5686 | ||
5687 | if (has_features || nvlist_lookup_uint64(props, | |
5688 | zpool_prop_to_name(ZPOOL_PROP_VERSION), &version) != 0) { | |
34dc7c2f | 5689 | version = SPA_VERSION; |
9ae529ec CS |
5690 | } |
5691 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); | |
428870ff BB |
5692 | |
5693 | spa->spa_first_txg = txg; | |
5694 | spa->spa_uberblock.ub_txg = txg - 1; | |
34dc7c2f BB |
5695 | spa->spa_uberblock.ub_version = version; |
5696 | spa->spa_ubsync = spa->spa_uberblock; | |
3dfb57a3 | 5697 | spa->spa_load_state = SPA_LOAD_CREATE; |
a1d477c2 MA |
5698 | spa->spa_removing_phys.sr_state = DSS_NONE; |
5699 | spa->spa_removing_phys.sr_removing_vdev = -1; | |
5700 | spa->spa_removing_phys.sr_prev_indirect_vdev = -1; | |
944a3724 | 5701 | spa->spa_indirect_vdevs_loaded = B_TRUE; |
34dc7c2f | 5702 | |
9babb374 BB |
5703 | /* |
5704 | * Create "The Godfather" zio to hold all async IOs | |
5705 | */ | |
e022864d MA |
5706 | spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *), |
5707 | KM_SLEEP); | |
1c27024e | 5708 | for (int i = 0; i < max_ncpus; i++) { |
e022864d MA |
5709 | spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, |
5710 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | | |
5711 | ZIO_FLAG_GODFATHER); | |
5712 | } | |
9babb374 | 5713 | |
34dc7c2f BB |
5714 | /* |
5715 | * Create the root vdev. | |
5716 | */ | |
b128c09f | 5717 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5718 | |
5719 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); | |
5720 | ||
5721 | ASSERT(error != 0 || rvd != NULL); | |
5722 | ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
5723 | ||
5724 | if (error == 0 && !zfs_allocatable_devs(nvroot)) | |
2e528b49 | 5725 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
5726 | |
5727 | if (error == 0 && | |
5728 | (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
5729 | (error = spa_validate_aux(spa, nvroot, txg, | |
5730 | VDEV_ALLOC_ADD)) == 0) { | |
cc99f275 DB |
5731 | /* |
5732 | * instantiate the metaslab groups (this will dirty the vdevs) | |
5733 | * we can no longer error exit past this point | |
5734 | */ | |
5735 | for (int c = 0; error == 0 && c < rvd->vdev_children; c++) { | |
5736 | vdev_t *vd = rvd->vdev_child[c]; | |
5737 | ||
5738 | vdev_metaslab_set_size(vd); | |
5739 | vdev_expand(vd, txg); | |
9babb374 | 5740 | } |
34dc7c2f BB |
5741 | } |
5742 | ||
b128c09f | 5743 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5744 | |
5745 | if (error != 0) { | |
5746 | spa_unload(spa); | |
5747 | spa_deactivate(spa); | |
5748 | spa_remove(spa); | |
5749 | mutex_exit(&spa_namespace_lock); | |
5750 | return (error); | |
5751 | } | |
5752 | ||
5753 | /* | |
5754 | * Get the list of spares, if specified. | |
5755 | */ | |
5756 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
5757 | &spares, &nspares) == 0) { | |
5758 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, | |
79c76d5b | 5759 | KM_SLEEP) == 0); |
34dc7c2f BB |
5760 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
5761 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 5762 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5763 | spa_load_spares(spa); |
b128c09f | 5764 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5765 | spa->spa_spares.sav_sync = B_TRUE; |
5766 | } | |
5767 | ||
5768 | /* | |
5769 | * Get the list of level 2 cache devices, if specified. | |
5770 | */ | |
5771 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
5772 | &l2cache, &nl2cache) == 0) { | |
5773 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
79c76d5b | 5774 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
5775 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
5776 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 5777 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5778 | spa_load_l2cache(spa); |
b128c09f | 5779 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5780 | spa->spa_l2cache.sav_sync = B_TRUE; |
5781 | } | |
5782 | ||
9ae529ec | 5783 | spa->spa_is_initializing = B_TRUE; |
b5256303 | 5784 | spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, dcp, txg); |
9ae529ec | 5785 | spa->spa_is_initializing = B_FALSE; |
34dc7c2f | 5786 | |
428870ff BB |
5787 | /* |
5788 | * Create DDTs (dedup tables). | |
5789 | */ | |
5790 | ddt_create(spa); | |
5791 | ||
5792 | spa_update_dspace(spa); | |
5793 | ||
34dc7c2f BB |
5794 | tx = dmu_tx_create_assigned(dp, txg); |
5795 | ||
d5e024cb BB |
5796 | /* |
5797 | * Create the pool's history object. | |
5798 | */ | |
5799 | if (version >= SPA_VERSION_ZPOOL_HISTORY && !spa->spa_history) | |
5800 | spa_history_create_obj(spa, tx); | |
5801 | ||
5802 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_CREATE); | |
5803 | spa_history_log_version(spa, "create", tx); | |
5804 | ||
34dc7c2f BB |
5805 | /* |
5806 | * Create the pool config object. | |
5807 | */ | |
5808 | spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
b128c09f | 5809 | DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, |
34dc7c2f BB |
5810 | DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); |
5811 | ||
5812 | if (zap_add(spa->spa_meta_objset, | |
5813 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
5814 | sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { | |
5815 | cmn_err(CE_PANIC, "failed to add pool config"); | |
5816 | } | |
5817 | ||
428870ff BB |
5818 | if (zap_add(spa->spa_meta_objset, |
5819 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION, | |
5820 | sizeof (uint64_t), 1, &version, tx) != 0) { | |
5821 | cmn_err(CE_PANIC, "failed to add pool version"); | |
5822 | } | |
5823 | ||
34dc7c2f BB |
5824 | /* Newly created pools with the right version are always deflated. */ |
5825 | if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
5826 | spa->spa_deflate = TRUE; | |
5827 | if (zap_add(spa->spa_meta_objset, | |
5828 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
5829 | sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
5830 | cmn_err(CE_PANIC, "failed to add deflate"); | |
5831 | } | |
5832 | } | |
5833 | ||
5834 | /* | |
428870ff | 5835 | * Create the deferred-free bpobj. Turn off compression |
34dc7c2f BB |
5836 | * because sync-to-convergence takes longer if the blocksize |
5837 | * keeps changing. | |
5838 | */ | |
428870ff BB |
5839 | obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx); |
5840 | dmu_object_set_compress(spa->spa_meta_objset, obj, | |
34dc7c2f | 5841 | ZIO_COMPRESS_OFF, tx); |
34dc7c2f | 5842 | if (zap_add(spa->spa_meta_objset, |
428870ff BB |
5843 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ, |
5844 | sizeof (uint64_t), 1, &obj, tx) != 0) { | |
5845 | cmn_err(CE_PANIC, "failed to add bpobj"); | |
34dc7c2f | 5846 | } |
428870ff BB |
5847 | VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj, |
5848 | spa->spa_meta_objset, obj)); | |
34dc7c2f | 5849 | |
3c67d83a TH |
5850 | /* |
5851 | * Generate some random noise for salted checksums to operate on. | |
5852 | */ | |
5853 | (void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes, | |
5854 | sizeof (spa->spa_cksum_salt.zcs_bytes)); | |
5855 | ||
34dc7c2f BB |
5856 | /* |
5857 | * Set pool properties. | |
5858 | */ | |
5859 | spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
5860 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
5861 | spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); | |
9babb374 | 5862 | spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND); |
379ca9cf | 5863 | spa->spa_multihost = zpool_prop_default_numeric(ZPOOL_PROP_MULTIHOST); |
1b939560 | 5864 | spa->spa_autotrim = zpool_prop_default_numeric(ZPOOL_PROP_AUTOTRIM); |
428870ff | 5865 | |
d164b209 BB |
5866 | if (props != NULL) { |
5867 | spa_configfile_set(spa, props, B_FALSE); | |
13fe0198 | 5868 | spa_sync_props(props, tx); |
d164b209 | 5869 | } |
34dc7c2f BB |
5870 | |
5871 | dmu_tx_commit(tx); | |
5872 | ||
5873 | spa->spa_sync_on = B_TRUE; | |
b5256303 | 5874 | txg_sync_start(dp); |
379ca9cf | 5875 | mmp_thread_start(spa); |
b5256303 | 5876 | txg_wait_synced(dp, txg); |
34dc7c2f | 5877 | |
9d5b5245 SD |
5878 | spa_spawn_aux_threads(spa); |
5879 | ||
a1d477c2 | 5880 | spa_write_cachefile(spa, B_FALSE, B_TRUE); |
34dc7c2f | 5881 | |
0c66c32d JG |
5882 | /* |
5883 | * Don't count references from objsets that are already closed | |
5884 | * and are making their way through the eviction process. | |
5885 | */ | |
5886 | spa_evicting_os_wait(spa); | |
424fd7c3 | 5887 | spa->spa_minref = zfs_refcount_count(&spa->spa_refcount); |
3dfb57a3 | 5888 | spa->spa_load_state = SPA_LOAD_NONE; |
b128c09f | 5889 | |
d164b209 BB |
5890 | mutex_exit(&spa_namespace_lock); |
5891 | ||
34dc7c2f BB |
5892 | return (0); |
5893 | } | |
5894 | ||
9babb374 BB |
5895 | /* |
5896 | * Import a non-root pool into the system. | |
5897 | */ | |
5898 | int | |
13fe0198 | 5899 | spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) |
34dc7c2f BB |
5900 | { |
5901 | spa_t *spa; | |
5902 | char *altroot = NULL; | |
428870ff | 5903 | spa_load_state_t state = SPA_LOAD_IMPORT; |
8a393be3 | 5904 | zpool_load_policy_t policy; |
572e2857 BB |
5905 | uint64_t mode = spa_mode_global; |
5906 | uint64_t readonly = B_FALSE; | |
9babb374 | 5907 | int error; |
34dc7c2f BB |
5908 | nvlist_t *nvroot; |
5909 | nvlist_t **spares, **l2cache; | |
5910 | uint_t nspares, nl2cache; | |
34dc7c2f BB |
5911 | |
5912 | /* | |
5913 | * If a pool with this name exists, return failure. | |
5914 | */ | |
5915 | mutex_enter(&spa_namespace_lock); | |
428870ff | 5916 | if (spa_lookup(pool) != NULL) { |
9babb374 | 5917 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 5918 | return (SET_ERROR(EEXIST)); |
34dc7c2f BB |
5919 | } |
5920 | ||
5921 | /* | |
5922 | * Create and initialize the spa structure. | |
5923 | */ | |
5924 | (void) nvlist_lookup_string(props, | |
5925 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
572e2857 BB |
5926 | (void) nvlist_lookup_uint64(props, |
5927 | zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly); | |
5928 | if (readonly) | |
5929 | mode = FREAD; | |
428870ff | 5930 | spa = spa_add(pool, config, altroot); |
572e2857 BB |
5931 | spa->spa_import_flags = flags; |
5932 | ||
5933 | /* | |
5934 | * Verbatim import - Take a pool and insert it into the namespace | |
5935 | * as if it had been loaded at boot. | |
5936 | */ | |
5937 | if (spa->spa_import_flags & ZFS_IMPORT_VERBATIM) { | |
5938 | if (props != NULL) | |
5939 | spa_configfile_set(spa, props, B_FALSE); | |
5940 | ||
a1d477c2 | 5941 | spa_write_cachefile(spa, B_FALSE, B_TRUE); |
12fa0466 | 5942 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT); |
4a0ee12a | 5943 | zfs_dbgmsg("spa_import: verbatim import of %s", pool); |
572e2857 | 5944 | mutex_exit(&spa_namespace_lock); |
572e2857 BB |
5945 | return (0); |
5946 | } | |
5947 | ||
5948 | spa_activate(spa, mode); | |
34dc7c2f | 5949 | |
9babb374 BB |
5950 | /* |
5951 | * Don't start async tasks until we know everything is healthy. | |
5952 | */ | |
5953 | spa_async_suspend(spa); | |
b128c09f | 5954 | |
8a393be3 PZ |
5955 | zpool_get_load_policy(config, &policy); |
5956 | if (policy.zlp_rewind & ZPOOL_DO_REWIND) | |
572e2857 BB |
5957 | state = SPA_LOAD_RECOVER; |
5958 | ||
6cb8e530 | 5959 | spa->spa_config_source = SPA_CONFIG_SRC_TRYIMPORT; |
572e2857 | 5960 | |
6cb8e530 PZ |
5961 | if (state != SPA_LOAD_RECOVER) { |
5962 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
5963 | zfs_dbgmsg("spa_import: importing %s", pool); | |
5964 | } else { | |
5965 | zfs_dbgmsg("spa_import: importing %s, max_txg=%lld " | |
8a393be3 | 5966 | "(RECOVERY MODE)", pool, (longlong_t)policy.zlp_txg); |
6cb8e530 | 5967 | } |
8a393be3 | 5968 | error = spa_load_best(spa, state, policy.zlp_txg, policy.zlp_rewind); |
428870ff BB |
5969 | |
5970 | /* | |
572e2857 BB |
5971 | * Propagate anything learned while loading the pool and pass it |
5972 | * back to caller (i.e. rewind info, missing devices, etc). | |
428870ff | 5973 | */ |
572e2857 BB |
5974 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
5975 | spa->spa_load_info) == 0); | |
34dc7c2f | 5976 | |
b128c09f | 5977 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5978 | /* |
9babb374 BB |
5979 | * Toss any existing sparelist, as it doesn't have any validity |
5980 | * anymore, and conflicts with spa_has_spare(). | |
34dc7c2f | 5981 | */ |
9babb374 | 5982 | if (spa->spa_spares.sav_config) { |
34dc7c2f BB |
5983 | nvlist_free(spa->spa_spares.sav_config); |
5984 | spa->spa_spares.sav_config = NULL; | |
5985 | spa_load_spares(spa); | |
5986 | } | |
9babb374 | 5987 | if (spa->spa_l2cache.sav_config) { |
34dc7c2f BB |
5988 | nvlist_free(spa->spa_l2cache.sav_config); |
5989 | spa->spa_l2cache.sav_config = NULL; | |
5990 | spa_load_l2cache(spa); | |
5991 | } | |
5992 | ||
5993 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
5994 | &nvroot) == 0); | |
b128c09f | 5995 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 5996 | |
d164b209 BB |
5997 | if (props != NULL) |
5998 | spa_configfile_set(spa, props, B_FALSE); | |
5999 | ||
fb5f0bc8 BB |
6000 | if (error != 0 || (props && spa_writeable(spa) && |
6001 | (error = spa_prop_set(spa, props)))) { | |
9babb374 BB |
6002 | spa_unload(spa); |
6003 | spa_deactivate(spa); | |
6004 | spa_remove(spa); | |
34dc7c2f BB |
6005 | mutex_exit(&spa_namespace_lock); |
6006 | return (error); | |
6007 | } | |
6008 | ||
572e2857 BB |
6009 | spa_async_resume(spa); |
6010 | ||
34dc7c2f BB |
6011 | /* |
6012 | * Override any spares and level 2 cache devices as specified by | |
6013 | * the user, as these may have correct device names/devids, etc. | |
6014 | */ | |
6015 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
6016 | &spares, &nspares) == 0) { | |
6017 | if (spa->spa_spares.sav_config) | |
6018 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
6019 | ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
6020 | else | |
6021 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, | |
79c76d5b | 6022 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
6023 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
6024 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 6025 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 6026 | spa_load_spares(spa); |
b128c09f | 6027 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
6028 | spa->spa_spares.sav_sync = B_TRUE; |
6029 | } | |
6030 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
6031 | &l2cache, &nl2cache) == 0) { | |
6032 | if (spa->spa_l2cache.sav_config) | |
6033 | VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
6034 | ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
6035 | else | |
6036 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
79c76d5b | 6037 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
6038 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
6039 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 6040 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 6041 | spa_load_l2cache(spa); |
b128c09f | 6042 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
6043 | spa->spa_l2cache.sav_sync = B_TRUE; |
6044 | } | |
6045 | ||
428870ff BB |
6046 | /* |
6047 | * Check for any removed devices. | |
6048 | */ | |
6049 | if (spa->spa_autoreplace) { | |
6050 | spa_aux_check_removed(&spa->spa_spares); | |
6051 | spa_aux_check_removed(&spa->spa_l2cache); | |
6052 | } | |
6053 | ||
fb5f0bc8 | 6054 | if (spa_writeable(spa)) { |
b128c09f BB |
6055 | /* |
6056 | * Update the config cache to include the newly-imported pool. | |
6057 | */ | |
45d1cae3 | 6058 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
b128c09f | 6059 | } |
34dc7c2f | 6060 | |
34dc7c2f | 6061 | /* |
9babb374 BB |
6062 | * It's possible that the pool was expanded while it was exported. |
6063 | * We kick off an async task to handle this for us. | |
34dc7c2f | 6064 | */ |
9babb374 | 6065 | spa_async_request(spa, SPA_ASYNC_AUTOEXPAND); |
b128c09f | 6066 | |
d5e024cb | 6067 | spa_history_log_version(spa, "import", NULL); |
fb390aaf | 6068 | |
12fa0466 | 6069 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT); |
fb390aaf | 6070 | |
a0bd735a | 6071 | zvol_create_minors(spa, pool, B_TRUE); |
526af785 | 6072 | |
fb390aaf HR |
6073 | mutex_exit(&spa_namespace_lock); |
6074 | ||
b128c09f BB |
6075 | return (0); |
6076 | } | |
6077 | ||
34dc7c2f BB |
6078 | nvlist_t * |
6079 | spa_tryimport(nvlist_t *tryconfig) | |
6080 | { | |
6081 | nvlist_t *config = NULL; | |
6cb8e530 | 6082 | char *poolname, *cachefile; |
34dc7c2f BB |
6083 | spa_t *spa; |
6084 | uint64_t state; | |
d164b209 | 6085 | int error; |
8a393be3 | 6086 | zpool_load_policy_t policy; |
34dc7c2f BB |
6087 | |
6088 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
6089 | return (NULL); | |
6090 | ||
6091 | if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
6092 | return (NULL); | |
6093 | ||
6094 | /* | |
6095 | * Create and initialize the spa structure. | |
6096 | */ | |
6097 | mutex_enter(&spa_namespace_lock); | |
428870ff | 6098 | spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL); |
fb5f0bc8 | 6099 | spa_activate(spa, FREAD); |
34dc7c2f BB |
6100 | |
6101 | /* | |
8a393be3 | 6102 | * Rewind pool if a max txg was provided. |
34dc7c2f | 6103 | */ |
8a393be3 PZ |
6104 | zpool_get_load_policy(spa->spa_config, &policy); |
6105 | if (policy.zlp_txg != UINT64_MAX) { | |
6106 | spa->spa_load_max_txg = policy.zlp_txg; | |
6cb8e530 PZ |
6107 | spa->spa_extreme_rewind = B_TRUE; |
6108 | zfs_dbgmsg("spa_tryimport: importing %s, max_txg=%lld", | |
8a393be3 | 6109 | poolname, (longlong_t)policy.zlp_txg); |
6cb8e530 PZ |
6110 | } else { |
6111 | zfs_dbgmsg("spa_tryimport: importing %s", poolname); | |
6112 | } | |
6113 | ||
6114 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_CACHEFILE, &cachefile) | |
6115 | == 0) { | |
6116 | zfs_dbgmsg("spa_tryimport: using cachefile '%s'", cachefile); | |
6117 | spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE; | |
6118 | } else { | |
6119 | spa->spa_config_source = SPA_CONFIG_SRC_SCAN; | |
6120 | } | |
6121 | ||
6122 | error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING); | |
34dc7c2f BB |
6123 | |
6124 | /* | |
6125 | * If 'tryconfig' was at least parsable, return the current config. | |
6126 | */ | |
6127 | if (spa->spa_root_vdev != NULL) { | |
34dc7c2f | 6128 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
6129 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
6130 | poolname) == 0); | |
6131 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
6132 | state) == 0); | |
6133 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
6134 | spa->spa_uberblock.ub_timestamp) == 0); | |
9ae529ec CS |
6135 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
6136 | spa->spa_load_info) == 0); | |
ffe9d382 BB |
6137 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_ERRATA, |
6138 | spa->spa_errata) == 0); | |
34dc7c2f BB |
6139 | |
6140 | /* | |
6141 | * If the bootfs property exists on this pool then we | |
6142 | * copy it out so that external consumers can tell which | |
6143 | * pools are bootable. | |
6144 | */ | |
d164b209 | 6145 | if ((!error || error == EEXIST) && spa->spa_bootfs) { |
79c76d5b | 6146 | char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
34dc7c2f BB |
6147 | |
6148 | /* | |
6149 | * We have to play games with the name since the | |
6150 | * pool was opened as TRYIMPORT_NAME. | |
6151 | */ | |
b128c09f | 6152 | if (dsl_dsobj_to_dsname(spa_name(spa), |
34dc7c2f BB |
6153 | spa->spa_bootfs, tmpname) == 0) { |
6154 | char *cp; | |
d1d7e268 MK |
6155 | char *dsname; |
6156 | ||
79c76d5b | 6157 | dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
34dc7c2f BB |
6158 | |
6159 | cp = strchr(tmpname, '/'); | |
6160 | if (cp == NULL) { | |
6161 | (void) strlcpy(dsname, tmpname, | |
6162 | MAXPATHLEN); | |
6163 | } else { | |
6164 | (void) snprintf(dsname, MAXPATHLEN, | |
6165 | "%s/%s", poolname, ++cp); | |
6166 | } | |
6167 | VERIFY(nvlist_add_string(config, | |
6168 | ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
6169 | kmem_free(dsname, MAXPATHLEN); | |
6170 | } | |
6171 | kmem_free(tmpname, MAXPATHLEN); | |
6172 | } | |
6173 | ||
6174 | /* | |
6175 | * Add the list of hot spares and level 2 cache devices. | |
6176 | */ | |
9babb374 | 6177 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
6178 | spa_add_spares(spa, config); |
6179 | spa_add_l2cache(spa, config); | |
9babb374 | 6180 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
6181 | } |
6182 | ||
6183 | spa_unload(spa); | |
6184 | spa_deactivate(spa); | |
6185 | spa_remove(spa); | |
6186 | mutex_exit(&spa_namespace_lock); | |
6187 | ||
6188 | return (config); | |
6189 | } | |
6190 | ||
6191 | /* | |
6192 | * Pool export/destroy | |
6193 | * | |
6194 | * The act of destroying or exporting a pool is very simple. We make sure there | |
6195 | * is no more pending I/O and any references to the pool are gone. Then, we | |
6196 | * update the pool state and sync all the labels to disk, removing the | |
fb5f0bc8 BB |
6197 | * configuration from the cache afterwards. If the 'hardforce' flag is set, then |
6198 | * we don't sync the labels or remove the configuration cache. | |
34dc7c2f BB |
6199 | */ |
6200 | static int | |
b128c09f | 6201 | spa_export_common(char *pool, int new_state, nvlist_t **oldconfig, |
fb5f0bc8 | 6202 | boolean_t force, boolean_t hardforce) |
34dc7c2f BB |
6203 | { |
6204 | spa_t *spa; | |
6205 | ||
6206 | if (oldconfig) | |
6207 | *oldconfig = NULL; | |
6208 | ||
fb5f0bc8 | 6209 | if (!(spa_mode_global & FWRITE)) |
2e528b49 | 6210 | return (SET_ERROR(EROFS)); |
34dc7c2f BB |
6211 | |
6212 | mutex_enter(&spa_namespace_lock); | |
6213 | if ((spa = spa_lookup(pool)) == NULL) { | |
6214 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 6215 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
6216 | } |
6217 | ||
43a85362 SD |
6218 | if (spa->spa_is_exporting) { |
6219 | /* the pool is being exported by another thread */ | |
6220 | mutex_exit(&spa_namespace_lock); | |
6221 | return (SET_ERROR(ZFS_ERR_EXPORT_IN_PROGRESS)); | |
6222 | } | |
6223 | spa->spa_is_exporting = B_TRUE; | |
6224 | ||
34dc7c2f BB |
6225 | /* |
6226 | * Put a hold on the pool, drop the namespace lock, stop async tasks, | |
6227 | * reacquire the namespace lock, and see if we can export. | |
6228 | */ | |
6229 | spa_open_ref(spa, FTAG); | |
6230 | mutex_exit(&spa_namespace_lock); | |
6231 | spa_async_suspend(spa); | |
a0bd735a BP |
6232 | if (spa->spa_zvol_taskq) { |
6233 | zvol_remove_minors(spa, spa_name(spa), B_TRUE); | |
6234 | taskq_wait(spa->spa_zvol_taskq); | |
6235 | } | |
34dc7c2f BB |
6236 | mutex_enter(&spa_namespace_lock); |
6237 | spa_close(spa, FTAG); | |
6238 | ||
d14cfd83 IH |
6239 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) |
6240 | goto export_spa; | |
34dc7c2f | 6241 | /* |
d14cfd83 IH |
6242 | * The pool will be in core if it's openable, in which case we can |
6243 | * modify its state. Objsets may be open only because they're dirty, | |
6244 | * so we have to force it to sync before checking spa_refcnt. | |
34dc7c2f | 6245 | */ |
0c66c32d | 6246 | if (spa->spa_sync_on) { |
34dc7c2f | 6247 | txg_wait_synced(spa->spa_dsl_pool, 0); |
0c66c32d JG |
6248 | spa_evicting_os_wait(spa); |
6249 | } | |
34dc7c2f | 6250 | |
d14cfd83 IH |
6251 | /* |
6252 | * A pool cannot be exported or destroyed if there are active | |
6253 | * references. If we are resetting a pool, allow references by | |
6254 | * fault injection handlers. | |
6255 | */ | |
6256 | if (!spa_refcount_zero(spa) || | |
6257 | (spa->spa_inject_ref != 0 && | |
6258 | new_state != POOL_STATE_UNINITIALIZED)) { | |
6259 | spa_async_resume(spa); | |
43a85362 | 6260 | spa->spa_is_exporting = B_FALSE; |
d14cfd83 IH |
6261 | mutex_exit(&spa_namespace_lock); |
6262 | return (SET_ERROR(EBUSY)); | |
6263 | } | |
34dc7c2f | 6264 | |
d14cfd83 | 6265 | if (spa->spa_sync_on) { |
b128c09f BB |
6266 | /* |
6267 | * A pool cannot be exported if it has an active shared spare. | |
6268 | * This is to prevent other pools stealing the active spare | |
6269 | * from an exported pool. At user's own will, such pool can | |
6270 | * be forcedly exported. | |
6271 | */ | |
6272 | if (!force && new_state == POOL_STATE_EXPORTED && | |
6273 | spa_has_active_shared_spare(spa)) { | |
6274 | spa_async_resume(spa); | |
43a85362 | 6275 | spa->spa_is_exporting = B_FALSE; |
b128c09f | 6276 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 6277 | return (SET_ERROR(EXDEV)); |
b128c09f | 6278 | } |
34dc7c2f | 6279 | |
619f0976 GW |
6280 | /* |
6281 | * We're about to export or destroy this pool. Make sure | |
1b939560 BB |
6282 | * we stop all initialization and trim activity here before |
6283 | * we set the spa_final_txg. This will ensure that all | |
619f0976 GW |
6284 | * dirty data resulting from the initialization is |
6285 | * committed to disk before we unload the pool. | |
6286 | */ | |
6287 | if (spa->spa_root_vdev != NULL) { | |
1b939560 BB |
6288 | vdev_t *rvd = spa->spa_root_vdev; |
6289 | vdev_initialize_stop_all(rvd, VDEV_INITIALIZE_ACTIVE); | |
6290 | vdev_trim_stop_all(rvd, VDEV_TRIM_ACTIVE); | |
6291 | vdev_autotrim_stop_all(spa); | |
619f0976 GW |
6292 | } |
6293 | ||
34dc7c2f BB |
6294 | /* |
6295 | * We want this to be reflected on every label, | |
6296 | * so mark them all dirty. spa_unload() will do the | |
6297 | * final sync that pushes these changes out. | |
6298 | */ | |
fb5f0bc8 | 6299 | if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { |
b128c09f | 6300 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 6301 | spa->spa_state = new_state; |
428870ff BB |
6302 | spa->spa_final_txg = spa_last_synced_txg(spa) + |
6303 | TXG_DEFER_SIZE + 1; | |
34dc7c2f | 6304 | vdev_config_dirty(spa->spa_root_vdev); |
b128c09f | 6305 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
6306 | } |
6307 | } | |
6308 | ||
d14cfd83 | 6309 | export_spa: |
d5e024cb BB |
6310 | if (new_state == POOL_STATE_DESTROYED) |
6311 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_DESTROY); | |
6312 | else if (new_state == POOL_STATE_EXPORTED) | |
6313 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_EXPORT); | |
34dc7c2f BB |
6314 | |
6315 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
6316 | spa_unload(spa); | |
6317 | spa_deactivate(spa); | |
6318 | } | |
6319 | ||
6320 | if (oldconfig && spa->spa_config) | |
6321 | VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); | |
6322 | ||
6323 | if (new_state != POOL_STATE_UNINITIALIZED) { | |
fb5f0bc8 | 6324 | if (!hardforce) |
a1d477c2 | 6325 | spa_write_cachefile(spa, B_TRUE, B_TRUE); |
34dc7c2f | 6326 | spa_remove(spa); |
43a85362 SD |
6327 | } else { |
6328 | /* | |
6329 | * If spa_remove() is not called for this spa_t and | |
6330 | * there is any possibility that it can be reused, | |
6331 | * we make sure to reset the exporting flag. | |
6332 | */ | |
6333 | spa->spa_is_exporting = B_FALSE; | |
34dc7c2f | 6334 | } |
34dc7c2f | 6335 | |
43a85362 | 6336 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
6337 | return (0); |
6338 | } | |
6339 | ||
6340 | /* | |
6341 | * Destroy a storage pool. | |
6342 | */ | |
6343 | int | |
6344 | spa_destroy(char *pool) | |
6345 | { | |
fb5f0bc8 BB |
6346 | return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, |
6347 | B_FALSE, B_FALSE)); | |
34dc7c2f BB |
6348 | } |
6349 | ||
6350 | /* | |
6351 | * Export a storage pool. | |
6352 | */ | |
6353 | int | |
fb5f0bc8 BB |
6354 | spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
6355 | boolean_t hardforce) | |
34dc7c2f | 6356 | { |
fb5f0bc8 BB |
6357 | return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, |
6358 | force, hardforce)); | |
34dc7c2f BB |
6359 | } |
6360 | ||
6361 | /* | |
6362 | * Similar to spa_export(), this unloads the spa_t without actually removing it | |
6363 | * from the namespace in any way. | |
6364 | */ | |
6365 | int | |
6366 | spa_reset(char *pool) | |
6367 | { | |
b128c09f | 6368 | return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, |
fb5f0bc8 | 6369 | B_FALSE, B_FALSE)); |
34dc7c2f BB |
6370 | } |
6371 | ||
34dc7c2f BB |
6372 | /* |
6373 | * ========================================================================== | |
6374 | * Device manipulation | |
6375 | * ========================================================================== | |
6376 | */ | |
6377 | ||
6378 | /* | |
6379 | * Add a device to a storage pool. | |
6380 | */ | |
6381 | int | |
6382 | spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
6383 | { | |
93e28d66 | 6384 | uint64_t txg; |
fb5f0bc8 | 6385 | int error; |
34dc7c2f BB |
6386 | vdev_t *rvd = spa->spa_root_vdev; |
6387 | vdev_t *vd, *tvd; | |
6388 | nvlist_t **spares, **l2cache; | |
6389 | uint_t nspares, nl2cache; | |
6390 | ||
572e2857 BB |
6391 | ASSERT(spa_writeable(spa)); |
6392 | ||
34dc7c2f BB |
6393 | txg = spa_vdev_enter(spa); |
6394 | ||
6395 | if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, | |
6396 | VDEV_ALLOC_ADD)) != 0) | |
6397 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6398 | ||
b128c09f | 6399 | spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ |
34dc7c2f BB |
6400 | |
6401 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, | |
6402 | &nspares) != 0) | |
6403 | nspares = 0; | |
6404 | ||
6405 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, | |
6406 | &nl2cache) != 0) | |
6407 | nl2cache = 0; | |
6408 | ||
b128c09f | 6409 | if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) |
34dc7c2f | 6410 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
34dc7c2f | 6411 | |
b128c09f BB |
6412 | if (vd->vdev_children != 0 && |
6413 | (error = vdev_create(vd, txg, B_FALSE)) != 0) | |
6414 | return (spa_vdev_exit(spa, vd, txg, error)); | |
34dc7c2f BB |
6415 | |
6416 | /* | |
6417 | * We must validate the spares and l2cache devices after checking the | |
6418 | * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
6419 | */ | |
b128c09f | 6420 | if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) |
34dc7c2f | 6421 | return (spa_vdev_exit(spa, vd, txg, error)); |
34dc7c2f BB |
6422 | |
6423 | /* | |
a1d477c2 MA |
6424 | * If we are in the middle of a device removal, we can only add |
6425 | * devices which match the existing devices in the pool. | |
6426 | * If we are in the middle of a removal, or have some indirect | |
6427 | * vdevs, we can not add raidz toplevels. | |
34dc7c2f | 6428 | */ |
a1d477c2 MA |
6429 | if (spa->spa_vdev_removal != NULL || |
6430 | spa->spa_removing_phys.sr_prev_indirect_vdev != -1) { | |
6431 | for (int c = 0; c < vd->vdev_children; c++) { | |
6432 | tvd = vd->vdev_child[c]; | |
6433 | if (spa->spa_vdev_removal != NULL && | |
9e052db4 | 6434 | tvd->vdev_ashift != spa->spa_max_ashift) { |
a1d477c2 MA |
6435 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
6436 | } | |
6437 | /* Fail if top level vdev is raidz */ | |
6438 | if (tvd->vdev_ops == &vdev_raidz_ops) { | |
6439 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); | |
6440 | } | |
6441 | /* | |
6442 | * Need the top level mirror to be | |
6443 | * a mirror of leaf vdevs only | |
6444 | */ | |
6445 | if (tvd->vdev_ops == &vdev_mirror_ops) { | |
6446 | for (uint64_t cid = 0; | |
6447 | cid < tvd->vdev_children; cid++) { | |
6448 | vdev_t *cvd = tvd->vdev_child[cid]; | |
6449 | if (!cvd->vdev_ops->vdev_op_leaf) { | |
6450 | return (spa_vdev_exit(spa, vd, | |
6451 | txg, EINVAL)); | |
6452 | } | |
6453 | } | |
6454 | } | |
6455 | } | |
6456 | } | |
6457 | ||
1c27024e | 6458 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
6459 | tvd = vd->vdev_child[c]; |
6460 | vdev_remove_child(vd, tvd); | |
93e28d66 | 6461 | tvd->vdev_id = rvd->vdev_children; |
34dc7c2f BB |
6462 | vdev_add_child(rvd, tvd); |
6463 | vdev_config_dirty(tvd); | |
6464 | } | |
6465 | ||
6466 | if (nspares != 0) { | |
6467 | spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, | |
6468 | ZPOOL_CONFIG_SPARES); | |
6469 | spa_load_spares(spa); | |
6470 | spa->spa_spares.sav_sync = B_TRUE; | |
6471 | } | |
6472 | ||
6473 | if (nl2cache != 0) { | |
6474 | spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
6475 | ZPOOL_CONFIG_L2CACHE); | |
6476 | spa_load_l2cache(spa); | |
6477 | spa->spa_l2cache.sav_sync = B_TRUE; | |
6478 | } | |
6479 | ||
6480 | /* | |
6481 | * We have to be careful when adding new vdevs to an existing pool. | |
6482 | * If other threads start allocating from these vdevs before we | |
6483 | * sync the config cache, and we lose power, then upon reboot we may | |
6484 | * fail to open the pool because there are DVAs that the config cache | |
6485 | * can't translate. Therefore, we first add the vdevs without | |
6486 | * initializing metaslabs; sync the config cache (via spa_vdev_exit()); | |
6487 | * and then let spa_config_update() initialize the new metaslabs. | |
6488 | * | |
6489 | * spa_load() checks for added-but-not-initialized vdevs, so that | |
6490 | * if we lose power at any point in this sequence, the remaining | |
6491 | * steps will be completed the next time we load the pool. | |
6492 | */ | |
6493 | (void) spa_vdev_exit(spa, vd, txg, 0); | |
6494 | ||
6495 | mutex_enter(&spa_namespace_lock); | |
6496 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
12fa0466 | 6497 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_VDEV_ADD); |
34dc7c2f BB |
6498 | mutex_exit(&spa_namespace_lock); |
6499 | ||
6500 | return (0); | |
6501 | } | |
6502 | ||
6503 | /* | |
6504 | * Attach a device to a mirror. The arguments are the path to any device | |
6505 | * in the mirror, and the nvroot for the new device. If the path specifies | |
6506 | * a device that is not mirrored, we automatically insert the mirror vdev. | |
6507 | * | |
6508 | * If 'replacing' is specified, the new device is intended to replace the | |
6509 | * existing device; in this case the two devices are made into their own | |
6510 | * mirror using the 'replacing' vdev, which is functionally identical to | |
6511 | * the mirror vdev (it actually reuses all the same ops) but has a few | |
6512 | * extra rules: you can't attach to it after it's been created, and upon | |
6513 | * completion of resilvering, the first disk (the one being replaced) | |
6514 | * is automatically detached. | |
6515 | */ | |
6516 | int | |
6517 | spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) | |
6518 | { | |
428870ff | 6519 | uint64_t txg, dtl_max_txg; |
1c27024e | 6520 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev); |
34dc7c2f BB |
6521 | vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; |
6522 | vdev_ops_t *pvops; | |
b128c09f BB |
6523 | char *oldvdpath, *newvdpath; |
6524 | int newvd_isspare; | |
6525 | int error; | |
34dc7c2f | 6526 | |
572e2857 BB |
6527 | ASSERT(spa_writeable(spa)); |
6528 | ||
34dc7c2f BB |
6529 | txg = spa_vdev_enter(spa); |
6530 | ||
b128c09f | 6531 | oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f | 6532 | |
d2734cce SD |
6533 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
6534 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { | |
6535 | error = (spa_has_checkpoint(spa)) ? | |
6536 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
6537 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6538 | } | |
6539 | ||
9e052db4 | 6540 | if (spa->spa_vdev_removal != NULL) |
a1d477c2 | 6541 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
a1d477c2 | 6542 | |
34dc7c2f BB |
6543 | if (oldvd == NULL) |
6544 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
6545 | ||
6546 | if (!oldvd->vdev_ops->vdev_op_leaf) | |
6547 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
6548 | ||
6549 | pvd = oldvd->vdev_parent; | |
6550 | ||
6551 | if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, | |
5ffb9d1d | 6552 | VDEV_ALLOC_ATTACH)) != 0) |
34dc7c2f BB |
6553 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); |
6554 | ||
6555 | if (newrootvd->vdev_children != 1) | |
6556 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
6557 | ||
6558 | newvd = newrootvd->vdev_child[0]; | |
6559 | ||
6560 | if (!newvd->vdev_ops->vdev_op_leaf) | |
6561 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
6562 | ||
6563 | if ((error = vdev_create(newrootvd, txg, replacing)) != 0) | |
6564 | return (spa_vdev_exit(spa, newrootvd, txg, error)); | |
6565 | ||
6566 | /* | |
6567 | * Spares can't replace logs | |
6568 | */ | |
b128c09f | 6569 | if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) |
34dc7c2f BB |
6570 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
6571 | ||
6572 | if (!replacing) { | |
6573 | /* | |
6574 | * For attach, the only allowable parent is a mirror or the root | |
6575 | * vdev. | |
6576 | */ | |
6577 | if (pvd->vdev_ops != &vdev_mirror_ops && | |
6578 | pvd->vdev_ops != &vdev_root_ops) | |
6579 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
6580 | ||
6581 | pvops = &vdev_mirror_ops; | |
6582 | } else { | |
6583 | /* | |
6584 | * Active hot spares can only be replaced by inactive hot | |
6585 | * spares. | |
6586 | */ | |
6587 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 | 6588 | oldvd->vdev_isspare && |
34dc7c2f BB |
6589 | !spa_has_spare(spa, newvd->vdev_guid)) |
6590 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
6591 | ||
6592 | /* | |
6593 | * If the source is a hot spare, and the parent isn't already a | |
6594 | * spare, then we want to create a new hot spare. Otherwise, we | |
6595 | * want to create a replacing vdev. The user is not allowed to | |
6596 | * attach to a spared vdev child unless the 'isspare' state is | |
6597 | * the same (spare replaces spare, non-spare replaces | |
6598 | * non-spare). | |
6599 | */ | |
572e2857 BB |
6600 | if (pvd->vdev_ops == &vdev_replacing_ops && |
6601 | spa_version(spa) < SPA_VERSION_MULTI_REPLACE) { | |
34dc7c2f | 6602 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
6603 | } else if (pvd->vdev_ops == &vdev_spare_ops && |
6604 | newvd->vdev_isspare != oldvd->vdev_isspare) { | |
34dc7c2f | 6605 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
6606 | } |
6607 | ||
6608 | if (newvd->vdev_isspare) | |
34dc7c2f BB |
6609 | pvops = &vdev_spare_ops; |
6610 | else | |
6611 | pvops = &vdev_replacing_ops; | |
6612 | } | |
6613 | ||
6614 | /* | |
9babb374 | 6615 | * Make sure the new device is big enough. |
34dc7c2f | 6616 | */ |
9babb374 | 6617 | if (newvd->vdev_asize < vdev_get_min_asize(oldvd)) |
34dc7c2f BB |
6618 | return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
6619 | ||
6620 | /* | |
6621 | * The new device cannot have a higher alignment requirement | |
6622 | * than the top-level vdev. | |
6623 | */ | |
6624 | if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
6625 | return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); | |
6626 | ||
6627 | /* | |
6628 | * If this is an in-place replacement, update oldvd's path and devid | |
6629 | * to make it distinguishable from newvd, and unopenable from now on. | |
6630 | */ | |
6631 | if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
6632 | spa_strfree(oldvd->vdev_path); | |
6633 | oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
79c76d5b | 6634 | KM_SLEEP); |
34dc7c2f BB |
6635 | (void) sprintf(oldvd->vdev_path, "%s/%s", |
6636 | newvd->vdev_path, "old"); | |
6637 | if (oldvd->vdev_devid != NULL) { | |
6638 | spa_strfree(oldvd->vdev_devid); | |
6639 | oldvd->vdev_devid = NULL; | |
6640 | } | |
6641 | } | |
6642 | ||
572e2857 | 6643 | /* mark the device being resilvered */ |
5d1f7fb6 | 6644 | newvd->vdev_resilver_txg = txg; |
572e2857 | 6645 | |
34dc7c2f BB |
6646 | /* |
6647 | * If the parent is not a mirror, or if we're replacing, insert the new | |
6648 | * mirror/replacing/spare vdev above oldvd. | |
6649 | */ | |
6650 | if (pvd->vdev_ops != pvops) | |
6651 | pvd = vdev_add_parent(oldvd, pvops); | |
6652 | ||
6653 | ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
6654 | ASSERT(pvd->vdev_ops == pvops); | |
6655 | ASSERT(oldvd->vdev_parent == pvd); | |
6656 | ||
6657 | /* | |
6658 | * Extract the new device from its root and add it to pvd. | |
6659 | */ | |
6660 | vdev_remove_child(newrootvd, newvd); | |
6661 | newvd->vdev_id = pvd->vdev_children; | |
428870ff | 6662 | newvd->vdev_crtxg = oldvd->vdev_crtxg; |
34dc7c2f BB |
6663 | vdev_add_child(pvd, newvd); |
6664 | ||
6d82f98c IH |
6665 | /* |
6666 | * Reevaluate the parent vdev state. | |
6667 | */ | |
6668 | vdev_propagate_state(pvd); | |
6669 | ||
34dc7c2f BB |
6670 | tvd = newvd->vdev_top; |
6671 | ASSERT(pvd->vdev_top == tvd); | |
6672 | ASSERT(tvd->vdev_parent == rvd); | |
6673 | ||
6674 | vdev_config_dirty(tvd); | |
6675 | ||
6676 | /* | |
428870ff BB |
6677 | * Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account |
6678 | * for any dmu_sync-ed blocks. It will propagate upward when | |
6679 | * spa_vdev_exit() calls vdev_dtl_reassess(). | |
34dc7c2f | 6680 | */ |
428870ff | 6681 | dtl_max_txg = txg + TXG_CONCURRENT_STATES; |
34dc7c2f | 6682 | |
428870ff BB |
6683 | vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL, |
6684 | dtl_max_txg - TXG_INITIAL); | |
34dc7c2f | 6685 | |
9babb374 | 6686 | if (newvd->vdev_isspare) { |
34dc7c2f | 6687 | spa_spare_activate(newvd); |
12fa0466 | 6688 | spa_event_notify(spa, newvd, NULL, ESC_ZFS_VDEV_SPARE); |
9babb374 BB |
6689 | } |
6690 | ||
b128c09f BB |
6691 | oldvdpath = spa_strdup(oldvd->vdev_path); |
6692 | newvdpath = spa_strdup(newvd->vdev_path); | |
6693 | newvd_isspare = newvd->vdev_isspare; | |
34dc7c2f BB |
6694 | |
6695 | /* | |
6696 | * Mark newvd's DTL dirty in this txg. | |
6697 | */ | |
6698 | vdev_dirty(tvd, VDD_DTL, newvd, txg); | |
6699 | ||
428870ff | 6700 | /* |
93cf2076 GW |
6701 | * Schedule the resilver to restart in the future. We do this to |
6702 | * ensure that dmu_sync-ed blocks have been stitched into the | |
80a91e74 TC |
6703 | * respective datasets. We do not do this if resilvers have been |
6704 | * deferred. | |
428870ff | 6705 | */ |
80a91e74 TC |
6706 | if (dsl_scan_resilvering(spa_get_dsl(spa)) && |
6707 | spa_feature_is_enabled(spa, SPA_FEATURE_RESILVER_DEFER)) | |
6708 | vdev_set_deferred_resilver(spa, newvd); | |
6709 | else | |
6710 | dsl_resilver_restart(spa->spa_dsl_pool, dtl_max_txg); | |
428870ff | 6711 | |
fb390aaf | 6712 | if (spa->spa_bootfs) |
12fa0466 | 6713 | spa_event_notify(spa, newvd, NULL, ESC_ZFS_BOOTFS_VDEV_ATTACH); |
fb390aaf | 6714 | |
12fa0466 | 6715 | spa_event_notify(spa, newvd, NULL, ESC_ZFS_VDEV_ATTACH); |
fb390aaf | 6716 | |
428870ff BB |
6717 | /* |
6718 | * Commit the config | |
6719 | */ | |
6720 | (void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0); | |
34dc7c2f | 6721 | |
6f1ffb06 | 6722 | spa_history_log_internal(spa, "vdev attach", NULL, |
428870ff | 6723 | "%s vdev=%s %s vdev=%s", |
45d1cae3 BB |
6724 | replacing && newvd_isspare ? "spare in" : |
6725 | replacing ? "replace" : "attach", newvdpath, | |
6726 | replacing ? "for" : "to", oldvdpath); | |
b128c09f BB |
6727 | |
6728 | spa_strfree(oldvdpath); | |
6729 | spa_strfree(newvdpath); | |
6730 | ||
34dc7c2f BB |
6731 | return (0); |
6732 | } | |
6733 | ||
6734 | /* | |
6735 | * Detach a device from a mirror or replacing vdev. | |
d3cc8b15 | 6736 | * |
34dc7c2f BB |
6737 | * If 'replace_done' is specified, only detach if the parent |
6738 | * is a replacing vdev. | |
6739 | */ | |
6740 | int | |
fb5f0bc8 | 6741 | spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) |
34dc7c2f BB |
6742 | { |
6743 | uint64_t txg; | |
fb5f0bc8 | 6744 | int error; |
1c27024e | 6745 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev); |
34dc7c2f BB |
6746 | vdev_t *vd, *pvd, *cvd, *tvd; |
6747 | boolean_t unspare = B_FALSE; | |
d4ed6673 | 6748 | uint64_t unspare_guid = 0; |
428870ff | 6749 | char *vdpath; |
1c27024e | 6750 | |
572e2857 BB |
6751 | ASSERT(spa_writeable(spa)); |
6752 | ||
34dc7c2f BB |
6753 | txg = spa_vdev_enter(spa); |
6754 | ||
b128c09f | 6755 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f | 6756 | |
d2734cce SD |
6757 | /* |
6758 | * Besides being called directly from the userland through the | |
6759 | * ioctl interface, spa_vdev_detach() can be potentially called | |
6760 | * at the end of spa_vdev_resilver_done(). | |
6761 | * | |
6762 | * In the regular case, when we have a checkpoint this shouldn't | |
6763 | * happen as we never empty the DTLs of a vdev during the scrub | |
6764 | * [see comment in dsl_scan_done()]. Thus spa_vdev_resilvering_done() | |
6765 | * should never get here when we have a checkpoint. | |
6766 | * | |
6767 | * That said, even in a case when we checkpoint the pool exactly | |
6768 | * as spa_vdev_resilver_done() calls this function everything | |
6769 | * should be fine as the resilver will return right away. | |
6770 | */ | |
6771 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
6772 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { | |
6773 | error = (spa_has_checkpoint(spa)) ? | |
6774 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
6775 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6776 | } | |
6777 | ||
34dc7c2f BB |
6778 | if (vd == NULL) |
6779 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
6780 | ||
6781 | if (!vd->vdev_ops->vdev_op_leaf) | |
6782 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
6783 | ||
6784 | pvd = vd->vdev_parent; | |
6785 | ||
fb5f0bc8 BB |
6786 | /* |
6787 | * If the parent/child relationship is not as expected, don't do it. | |
6788 | * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing | |
6789 | * vdev that's replacing B with C. The user's intent in replacing | |
6790 | * is to go from M(A,B) to M(A,C). If the user decides to cancel | |
6791 | * the replace by detaching C, the expected behavior is to end up | |
6792 | * M(A,B). But suppose that right after deciding to detach C, | |
6793 | * the replacement of B completes. We would have M(A,C), and then | |
6794 | * ask to detach C, which would leave us with just A -- not what | |
6795 | * the user wanted. To prevent this, we make sure that the | |
6796 | * parent/child relationship hasn't changed -- in this example, | |
6797 | * that C's parent is still the replacing vdev R. | |
6798 | */ | |
6799 | if (pvd->vdev_guid != pguid && pguid != 0) | |
6800 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
6801 | ||
34dc7c2f | 6802 | /* |
572e2857 | 6803 | * Only 'replacing' or 'spare' vdevs can be replaced. |
34dc7c2f | 6804 | */ |
572e2857 BB |
6805 | if (replace_done && pvd->vdev_ops != &vdev_replacing_ops && |
6806 | pvd->vdev_ops != &vdev_spare_ops) | |
6807 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
34dc7c2f BB |
6808 | |
6809 | ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
6810 | spa_version(spa) >= SPA_VERSION_SPARES); | |
6811 | ||
6812 | /* | |
6813 | * Only mirror, replacing, and spare vdevs support detach. | |
6814 | */ | |
6815 | if (pvd->vdev_ops != &vdev_replacing_ops && | |
6816 | pvd->vdev_ops != &vdev_mirror_ops && | |
6817 | pvd->vdev_ops != &vdev_spare_ops) | |
6818 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
6819 | ||
6820 | /* | |
fb5f0bc8 BB |
6821 | * If this device has the only valid copy of some data, |
6822 | * we cannot safely detach it. | |
34dc7c2f | 6823 | */ |
fb5f0bc8 | 6824 | if (vdev_dtl_required(vd)) |
34dc7c2f BB |
6825 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
6826 | ||
fb5f0bc8 | 6827 | ASSERT(pvd->vdev_children >= 2); |
34dc7c2f | 6828 | |
b128c09f BB |
6829 | /* |
6830 | * If we are detaching the second disk from a replacing vdev, then | |
6831 | * check to see if we changed the original vdev's path to have "/old" | |
6832 | * at the end in spa_vdev_attach(). If so, undo that change now. | |
6833 | */ | |
572e2857 BB |
6834 | if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id > 0 && |
6835 | vd->vdev_path != NULL) { | |
6836 | size_t len = strlen(vd->vdev_path); | |
6837 | ||
1c27024e | 6838 | for (int c = 0; c < pvd->vdev_children; c++) { |
572e2857 BB |
6839 | cvd = pvd->vdev_child[c]; |
6840 | ||
6841 | if (cvd == vd || cvd->vdev_path == NULL) | |
6842 | continue; | |
6843 | ||
6844 | if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && | |
6845 | strcmp(cvd->vdev_path + len, "/old") == 0) { | |
6846 | spa_strfree(cvd->vdev_path); | |
6847 | cvd->vdev_path = spa_strdup(vd->vdev_path); | |
6848 | break; | |
6849 | } | |
b128c09f BB |
6850 | } |
6851 | } | |
6852 | ||
34dc7c2f BB |
6853 | /* |
6854 | * If we are detaching the original disk from a spare, then it implies | |
6855 | * that the spare should become a real disk, and be removed from the | |
6856 | * active spare list for the pool. | |
6857 | */ | |
6858 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 BB |
6859 | vd->vdev_id == 0 && |
6860 | pvd->vdev_child[pvd->vdev_children - 1]->vdev_isspare) | |
34dc7c2f BB |
6861 | unspare = B_TRUE; |
6862 | ||
6863 | /* | |
6864 | * Erase the disk labels so the disk can be used for other things. | |
6865 | * This must be done after all other error cases are handled, | |
6866 | * but before we disembowel vd (so we can still do I/O to it). | |
6867 | * But if we can't do it, don't treat the error as fatal -- | |
6868 | * it may be that the unwritability of the disk is the reason | |
6869 | * it's being detached! | |
6870 | */ | |
6871 | error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
6872 | ||
6873 | /* | |
6874 | * Remove vd from its parent and compact the parent's children. | |
6875 | */ | |
6876 | vdev_remove_child(pvd, vd); | |
6877 | vdev_compact_children(pvd); | |
6878 | ||
6879 | /* | |
6880 | * Remember one of the remaining children so we can get tvd below. | |
6881 | */ | |
572e2857 | 6882 | cvd = pvd->vdev_child[pvd->vdev_children - 1]; |
34dc7c2f BB |
6883 | |
6884 | /* | |
6885 | * If we need to remove the remaining child from the list of hot spares, | |
fb5f0bc8 BB |
6886 | * do it now, marking the vdev as no longer a spare in the process. |
6887 | * We must do this before vdev_remove_parent(), because that can | |
6888 | * change the GUID if it creates a new toplevel GUID. For a similar | |
6889 | * reason, we must remove the spare now, in the same txg as the detach; | |
6890 | * otherwise someone could attach a new sibling, change the GUID, and | |
6891 | * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. | |
34dc7c2f BB |
6892 | */ |
6893 | if (unspare) { | |
6894 | ASSERT(cvd->vdev_isspare); | |
6895 | spa_spare_remove(cvd); | |
6896 | unspare_guid = cvd->vdev_guid; | |
fb5f0bc8 | 6897 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
572e2857 | 6898 | cvd->vdev_unspare = B_TRUE; |
34dc7c2f BB |
6899 | } |
6900 | ||
428870ff BB |
6901 | /* |
6902 | * If the parent mirror/replacing vdev only has one child, | |
6903 | * the parent is no longer needed. Remove it from the tree. | |
6904 | */ | |
572e2857 BB |
6905 | if (pvd->vdev_children == 1) { |
6906 | if (pvd->vdev_ops == &vdev_spare_ops) | |
6907 | cvd->vdev_unspare = B_FALSE; | |
428870ff | 6908 | vdev_remove_parent(cvd); |
572e2857 BB |
6909 | } |
6910 | ||
428870ff BB |
6911 | /* |
6912 | * We don't set tvd until now because the parent we just removed | |
6913 | * may have been the previous top-level vdev. | |
6914 | */ | |
6915 | tvd = cvd->vdev_top; | |
6916 | ASSERT(tvd->vdev_parent == rvd); | |
6917 | ||
6918 | /* | |
6919 | * Reevaluate the parent vdev state. | |
6920 | */ | |
6921 | vdev_propagate_state(cvd); | |
6922 | ||
6923 | /* | |
6924 | * If the 'autoexpand' property is set on the pool then automatically | |
6925 | * try to expand the size of the pool. For example if the device we | |
6926 | * just detached was smaller than the others, it may be possible to | |
6927 | * add metaslabs (i.e. grow the pool). We need to reopen the vdev | |
6928 | * first so that we can obtain the updated sizes of the leaf vdevs. | |
6929 | */ | |
6930 | if (spa->spa_autoexpand) { | |
6931 | vdev_reopen(tvd); | |
6932 | vdev_expand(tvd, txg); | |
6933 | } | |
6934 | ||
6935 | vdev_config_dirty(tvd); | |
6936 | ||
6937 | /* | |
6938 | * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that | |
6939 | * vd->vdev_detached is set and free vd's DTL object in syncing context. | |
6940 | * But first make sure we're not on any *other* txg's DTL list, to | |
6941 | * prevent vd from being accessed after it's freed. | |
6942 | */ | |
b6ca6193 | 6943 | vdpath = spa_strdup(vd->vdev_path ? vd->vdev_path : "none"); |
1c27024e | 6944 | for (int t = 0; t < TXG_SIZE; t++) |
428870ff BB |
6945 | (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); |
6946 | vd->vdev_detached = B_TRUE; | |
6947 | vdev_dirty(tvd, VDD_DTL, vd, txg); | |
6948 | ||
12fa0466 | 6949 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_REMOVE); |
428870ff | 6950 | |
572e2857 BB |
6951 | /* hang on to the spa before we release the lock */ |
6952 | spa_open_ref(spa, FTAG); | |
6953 | ||
428870ff BB |
6954 | error = spa_vdev_exit(spa, vd, txg, 0); |
6955 | ||
6f1ffb06 | 6956 | spa_history_log_internal(spa, "detach", NULL, |
428870ff BB |
6957 | "vdev=%s", vdpath); |
6958 | spa_strfree(vdpath); | |
6959 | ||
6960 | /* | |
6961 | * If this was the removal of the original device in a hot spare vdev, | |
6962 | * then we want to go through and remove the device from the hot spare | |
6963 | * list of every other pool. | |
6964 | */ | |
6965 | if (unspare) { | |
572e2857 BB |
6966 | spa_t *altspa = NULL; |
6967 | ||
428870ff | 6968 | mutex_enter(&spa_namespace_lock); |
572e2857 BB |
6969 | while ((altspa = spa_next(altspa)) != NULL) { |
6970 | if (altspa->spa_state != POOL_STATE_ACTIVE || | |
6971 | altspa == spa) | |
428870ff | 6972 | continue; |
572e2857 BB |
6973 | |
6974 | spa_open_ref(altspa, FTAG); | |
428870ff | 6975 | mutex_exit(&spa_namespace_lock); |
572e2857 | 6976 | (void) spa_vdev_remove(altspa, unspare_guid, B_TRUE); |
428870ff | 6977 | mutex_enter(&spa_namespace_lock); |
572e2857 | 6978 | spa_close(altspa, FTAG); |
428870ff BB |
6979 | } |
6980 | mutex_exit(&spa_namespace_lock); | |
572e2857 BB |
6981 | |
6982 | /* search the rest of the vdevs for spares to remove */ | |
6983 | spa_vdev_resilver_done(spa); | |
428870ff BB |
6984 | } |
6985 | ||
572e2857 BB |
6986 | /* all done with the spa; OK to release */ |
6987 | mutex_enter(&spa_namespace_lock); | |
6988 | spa_close(spa, FTAG); | |
6989 | mutex_exit(&spa_namespace_lock); | |
6990 | ||
428870ff BB |
6991 | return (error); |
6992 | } | |
6993 | ||
c10d37dd GW |
6994 | static int |
6995 | spa_vdev_initialize_impl(spa_t *spa, uint64_t guid, uint64_t cmd_type, | |
6996 | list_t *vd_list) | |
619f0976 | 6997 | { |
c10d37dd GW |
6998 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
6999 | ||
619f0976 GW |
7000 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); |
7001 | ||
7002 | /* Look up vdev and ensure it's a leaf. */ | |
7003 | vdev_t *vd = spa_lookup_by_guid(spa, guid, B_FALSE); | |
7004 | if (vd == NULL || vd->vdev_detached) { | |
7005 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
619f0976 GW |
7006 | return (SET_ERROR(ENODEV)); |
7007 | } else if (!vd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(vd)) { | |
7008 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
619f0976 GW |
7009 | return (SET_ERROR(EINVAL)); |
7010 | } else if (!vdev_writeable(vd)) { | |
7011 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
619f0976 GW |
7012 | return (SET_ERROR(EROFS)); |
7013 | } | |
7014 | mutex_enter(&vd->vdev_initialize_lock); | |
7015 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7016 | ||
7017 | /* | |
7018 | * When we activate an initialize action we check to see | |
7019 | * if the vdev_initialize_thread is NULL. We do this instead | |
7020 | * of using the vdev_initialize_state since there might be | |
7021 | * a previous initialization process which has completed but | |
7022 | * the thread is not exited. | |
7023 | */ | |
1b939560 | 7024 | if (cmd_type == POOL_INITIALIZE_START && |
619f0976 GW |
7025 | (vd->vdev_initialize_thread != NULL || |
7026 | vd->vdev_top->vdev_removing)) { | |
7027 | mutex_exit(&vd->vdev_initialize_lock); | |
619f0976 GW |
7028 | return (SET_ERROR(EBUSY)); |
7029 | } else if (cmd_type == POOL_INITIALIZE_CANCEL && | |
7030 | (vd->vdev_initialize_state != VDEV_INITIALIZE_ACTIVE && | |
7031 | vd->vdev_initialize_state != VDEV_INITIALIZE_SUSPENDED)) { | |
7032 | mutex_exit(&vd->vdev_initialize_lock); | |
619f0976 GW |
7033 | return (SET_ERROR(ESRCH)); |
7034 | } else if (cmd_type == POOL_INITIALIZE_SUSPEND && | |
7035 | vd->vdev_initialize_state != VDEV_INITIALIZE_ACTIVE) { | |
7036 | mutex_exit(&vd->vdev_initialize_lock); | |
619f0976 GW |
7037 | return (SET_ERROR(ESRCH)); |
7038 | } | |
7039 | ||
7040 | switch (cmd_type) { | |
1b939560 | 7041 | case POOL_INITIALIZE_START: |
619f0976 GW |
7042 | vdev_initialize(vd); |
7043 | break; | |
7044 | case POOL_INITIALIZE_CANCEL: | |
c10d37dd | 7045 | vdev_initialize_stop(vd, VDEV_INITIALIZE_CANCELED, vd_list); |
619f0976 GW |
7046 | break; |
7047 | case POOL_INITIALIZE_SUSPEND: | |
c10d37dd | 7048 | vdev_initialize_stop(vd, VDEV_INITIALIZE_SUSPENDED, vd_list); |
619f0976 GW |
7049 | break; |
7050 | default: | |
7051 | panic("invalid cmd_type %llu", (unsigned long long)cmd_type); | |
7052 | } | |
7053 | mutex_exit(&vd->vdev_initialize_lock); | |
7054 | ||
c10d37dd GW |
7055 | return (0); |
7056 | } | |
7057 | ||
7058 | int | |
7059 | spa_vdev_initialize(spa_t *spa, nvlist_t *nv, uint64_t cmd_type, | |
7060 | nvlist_t *vdev_errlist) | |
7061 | { | |
7062 | int total_errors = 0; | |
7063 | list_t vd_list; | |
7064 | ||
7065 | list_create(&vd_list, sizeof (vdev_t), | |
7066 | offsetof(vdev_t, vdev_initialize_node)); | |
7067 | ||
7068 | /* | |
7069 | * We hold the namespace lock through the whole function | |
7070 | * to prevent any changes to the pool while we're starting or | |
7071 | * stopping initialization. The config and state locks are held so that | |
7072 | * we can properly assess the vdev state before we commit to | |
7073 | * the initializing operation. | |
7074 | */ | |
7075 | mutex_enter(&spa_namespace_lock); | |
7076 | ||
7077 | for (nvpair_t *pair = nvlist_next_nvpair(nv, NULL); | |
7078 | pair != NULL; pair = nvlist_next_nvpair(nv, pair)) { | |
7079 | uint64_t vdev_guid = fnvpair_value_uint64(pair); | |
7080 | ||
7081 | int error = spa_vdev_initialize_impl(spa, vdev_guid, cmd_type, | |
7082 | &vd_list); | |
7083 | if (error != 0) { | |
7084 | char guid_as_str[MAXNAMELEN]; | |
7085 | ||
7086 | (void) snprintf(guid_as_str, sizeof (guid_as_str), | |
7087 | "%llu", (unsigned long long)vdev_guid); | |
7088 | fnvlist_add_int64(vdev_errlist, guid_as_str, error); | |
7089 | total_errors++; | |
7090 | } | |
7091 | } | |
7092 | ||
7093 | /* Wait for all initialize threads to stop. */ | |
7094 | vdev_initialize_stop_wait(spa, &vd_list); | |
7095 | ||
619f0976 GW |
7096 | /* Sync out the initializing state */ |
7097 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
7098 | mutex_exit(&spa_namespace_lock); | |
7099 | ||
c10d37dd | 7100 | list_destroy(&vd_list); |
619f0976 | 7101 | |
c10d37dd GW |
7102 | return (total_errors); |
7103 | } | |
619f0976 | 7104 | |
1b939560 BB |
7105 | static int |
7106 | spa_vdev_trim_impl(spa_t *spa, uint64_t guid, uint64_t cmd_type, | |
7107 | uint64_t rate, boolean_t partial, boolean_t secure, list_t *vd_list) | |
7108 | { | |
7109 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
7110 | ||
7111 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
7112 | ||
7113 | /* Look up vdev and ensure it's a leaf. */ | |
7114 | vdev_t *vd = spa_lookup_by_guid(spa, guid, B_FALSE); | |
7115 | if (vd == NULL || vd->vdev_detached) { | |
7116 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7117 | return (SET_ERROR(ENODEV)); | |
7118 | } else if (!vd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(vd)) { | |
7119 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7120 | return (SET_ERROR(EINVAL)); | |
7121 | } else if (!vdev_writeable(vd)) { | |
7122 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7123 | return (SET_ERROR(EROFS)); | |
7124 | } else if (!vd->vdev_has_trim) { | |
7125 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7126 | return (SET_ERROR(EOPNOTSUPP)); | |
7127 | } else if (secure && !vd->vdev_has_securetrim) { | |
7128 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7129 | return (SET_ERROR(EOPNOTSUPP)); | |
7130 | } | |
7131 | mutex_enter(&vd->vdev_trim_lock); | |
7132 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7133 | ||
7134 | /* | |
7135 | * When we activate a TRIM action we check to see if the | |
7136 | * vdev_trim_thread is NULL. We do this instead of using the | |
7137 | * vdev_trim_state since there might be a previous TRIM process | |
7138 | * which has completed but the thread is not exited. | |
7139 | */ | |
7140 | if (cmd_type == POOL_TRIM_START && | |
7141 | (vd->vdev_trim_thread != NULL || vd->vdev_top->vdev_removing)) { | |
7142 | mutex_exit(&vd->vdev_trim_lock); | |
7143 | return (SET_ERROR(EBUSY)); | |
7144 | } else if (cmd_type == POOL_TRIM_CANCEL && | |
7145 | (vd->vdev_trim_state != VDEV_TRIM_ACTIVE && | |
7146 | vd->vdev_trim_state != VDEV_TRIM_SUSPENDED)) { | |
7147 | mutex_exit(&vd->vdev_trim_lock); | |
7148 | return (SET_ERROR(ESRCH)); | |
7149 | } else if (cmd_type == POOL_TRIM_SUSPEND && | |
7150 | vd->vdev_trim_state != VDEV_TRIM_ACTIVE) { | |
7151 | mutex_exit(&vd->vdev_trim_lock); | |
7152 | return (SET_ERROR(ESRCH)); | |
7153 | } | |
7154 | ||
7155 | switch (cmd_type) { | |
7156 | case POOL_TRIM_START: | |
7157 | vdev_trim(vd, rate, partial, secure); | |
7158 | break; | |
7159 | case POOL_TRIM_CANCEL: | |
7160 | vdev_trim_stop(vd, VDEV_TRIM_CANCELED, vd_list); | |
7161 | break; | |
7162 | case POOL_TRIM_SUSPEND: | |
7163 | vdev_trim_stop(vd, VDEV_TRIM_SUSPENDED, vd_list); | |
7164 | break; | |
7165 | default: | |
7166 | panic("invalid cmd_type %llu", (unsigned long long)cmd_type); | |
7167 | } | |
7168 | mutex_exit(&vd->vdev_trim_lock); | |
7169 | ||
7170 | return (0); | |
7171 | } | |
7172 | ||
7173 | /* | |
7174 | * Initiates a manual TRIM for the requested vdevs. This kicks off individual | |
7175 | * TRIM threads for each child vdev. These threads pass over all of the free | |
7176 | * space in the vdev's metaslabs and issues TRIM commands for that space. | |
7177 | */ | |
7178 | int | |
7179 | spa_vdev_trim(spa_t *spa, nvlist_t *nv, uint64_t cmd_type, uint64_t rate, | |
7180 | boolean_t partial, boolean_t secure, nvlist_t *vdev_errlist) | |
7181 | { | |
7182 | int total_errors = 0; | |
7183 | list_t vd_list; | |
7184 | ||
7185 | list_create(&vd_list, sizeof (vdev_t), | |
7186 | offsetof(vdev_t, vdev_trim_node)); | |
7187 | ||
7188 | /* | |
7189 | * We hold the namespace lock through the whole function | |
7190 | * to prevent any changes to the pool while we're starting or | |
7191 | * stopping TRIM. The config and state locks are held so that | |
7192 | * we can properly assess the vdev state before we commit to | |
7193 | * the TRIM operation. | |
7194 | */ | |
7195 | mutex_enter(&spa_namespace_lock); | |
7196 | ||
7197 | for (nvpair_t *pair = nvlist_next_nvpair(nv, NULL); | |
7198 | pair != NULL; pair = nvlist_next_nvpair(nv, pair)) { | |
7199 | uint64_t vdev_guid = fnvpair_value_uint64(pair); | |
7200 | ||
7201 | int error = spa_vdev_trim_impl(spa, vdev_guid, cmd_type, | |
7202 | rate, partial, secure, &vd_list); | |
7203 | if (error != 0) { | |
7204 | char guid_as_str[MAXNAMELEN]; | |
7205 | ||
7206 | (void) snprintf(guid_as_str, sizeof (guid_as_str), | |
7207 | "%llu", (unsigned long long)vdev_guid); | |
7208 | fnvlist_add_int64(vdev_errlist, guid_as_str, error); | |
7209 | total_errors++; | |
7210 | } | |
7211 | } | |
7212 | ||
7213 | /* Wait for all TRIM threads to stop. */ | |
7214 | vdev_trim_stop_wait(spa, &vd_list); | |
7215 | ||
7216 | /* Sync out the TRIM state */ | |
7217 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
7218 | mutex_exit(&spa_namespace_lock); | |
7219 | ||
7220 | list_destroy(&vd_list); | |
7221 | ||
7222 | return (total_errors); | |
7223 | } | |
7224 | ||
428870ff BB |
7225 | /* |
7226 | * Split a set of devices from their mirrors, and create a new pool from them. | |
7227 | */ | |
7228 | int | |
7229 | spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, | |
7230 | nvlist_t *props, boolean_t exp) | |
7231 | { | |
7232 | int error = 0; | |
7233 | uint64_t txg, *glist; | |
7234 | spa_t *newspa; | |
7235 | uint_t c, children, lastlog; | |
7236 | nvlist_t **child, *nvl, *tmp; | |
7237 | dmu_tx_t *tx; | |
7238 | char *altroot = NULL; | |
7239 | vdev_t *rvd, **vml = NULL; /* vdev modify list */ | |
7240 | boolean_t activate_slog; | |
7241 | ||
572e2857 | 7242 | ASSERT(spa_writeable(spa)); |
428870ff BB |
7243 | |
7244 | txg = spa_vdev_enter(spa); | |
7245 | ||
d2734cce SD |
7246 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
7247 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { | |
7248 | error = (spa_has_checkpoint(spa)) ? | |
7249 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
7250 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
7251 | } | |
7252 | ||
428870ff BB |
7253 | /* clear the log and flush everything up to now */ |
7254 | activate_slog = spa_passivate_log(spa); | |
7255 | (void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
a1d477c2 | 7256 | error = spa_reset_logs(spa); |
428870ff BB |
7257 | txg = spa_vdev_config_enter(spa); |
7258 | ||
7259 | if (activate_slog) | |
7260 | spa_activate_log(spa); | |
7261 | ||
7262 | if (error != 0) | |
7263 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
7264 | ||
7265 | /* check new spa name before going any further */ | |
7266 | if (spa_lookup(newname) != NULL) | |
7267 | return (spa_vdev_exit(spa, NULL, txg, EEXIST)); | |
7268 | ||
7269 | /* | |
7270 | * scan through all the children to ensure they're all mirrors | |
7271 | */ | |
7272 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 || | |
7273 | nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child, | |
7274 | &children) != 0) | |
7275 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
7276 | ||
7277 | /* first, check to ensure we've got the right child count */ | |
7278 | rvd = spa->spa_root_vdev; | |
7279 | lastlog = 0; | |
7280 | for (c = 0; c < rvd->vdev_children; c++) { | |
7281 | vdev_t *vd = rvd->vdev_child[c]; | |
7282 | ||
7283 | /* don't count the holes & logs as children */ | |
a1d477c2 | 7284 | if (vd->vdev_islog || !vdev_is_concrete(vd)) { |
428870ff BB |
7285 | if (lastlog == 0) |
7286 | lastlog = c; | |
7287 | continue; | |
7288 | } | |
7289 | ||
7290 | lastlog = 0; | |
7291 | } | |
7292 | if (children != (lastlog != 0 ? lastlog : rvd->vdev_children)) | |
7293 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
7294 | ||
7295 | /* next, ensure no spare or cache devices are part of the split */ | |
7296 | if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 || | |
7297 | nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0) | |
7298 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
7299 | ||
79c76d5b BB |
7300 | vml = kmem_zalloc(children * sizeof (vdev_t *), KM_SLEEP); |
7301 | glist = kmem_zalloc(children * sizeof (uint64_t), KM_SLEEP); | |
428870ff BB |
7302 | |
7303 | /* then, loop over each vdev and validate it */ | |
7304 | for (c = 0; c < children; c++) { | |
7305 | uint64_t is_hole = 0; | |
7306 | ||
7307 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, | |
7308 | &is_hole); | |
7309 | ||
7310 | if (is_hole != 0) { | |
7311 | if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole || | |
7312 | spa->spa_root_vdev->vdev_child[c]->vdev_islog) { | |
7313 | continue; | |
7314 | } else { | |
2e528b49 | 7315 | error = SET_ERROR(EINVAL); |
428870ff BB |
7316 | break; |
7317 | } | |
7318 | } | |
7319 | ||
7320 | /* which disk is going to be split? */ | |
7321 | if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID, | |
7322 | &glist[c]) != 0) { | |
2e528b49 | 7323 | error = SET_ERROR(EINVAL); |
428870ff BB |
7324 | break; |
7325 | } | |
7326 | ||
7327 | /* look it up in the spa */ | |
7328 | vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE); | |
7329 | if (vml[c] == NULL) { | |
2e528b49 | 7330 | error = SET_ERROR(ENODEV); |
428870ff BB |
7331 | break; |
7332 | } | |
7333 | ||
7334 | /* make sure there's nothing stopping the split */ | |
7335 | if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops || | |
7336 | vml[c]->vdev_islog || | |
a1d477c2 | 7337 | !vdev_is_concrete(vml[c]) || |
428870ff BB |
7338 | vml[c]->vdev_isspare || |
7339 | vml[c]->vdev_isl2cache || | |
7340 | !vdev_writeable(vml[c]) || | |
7341 | vml[c]->vdev_children != 0 || | |
7342 | vml[c]->vdev_state != VDEV_STATE_HEALTHY || | |
7343 | c != spa->spa_root_vdev->vdev_child[c]->vdev_id) { | |
2e528b49 | 7344 | error = SET_ERROR(EINVAL); |
428870ff BB |
7345 | break; |
7346 | } | |
7347 | ||
733b5722 RS |
7348 | if (vdev_dtl_required(vml[c]) || |
7349 | vdev_resilver_needed(vml[c], NULL, NULL)) { | |
2e528b49 | 7350 | error = SET_ERROR(EBUSY); |
428870ff BB |
7351 | break; |
7352 | } | |
7353 | ||
7354 | /* we need certain info from the top level */ | |
7355 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY, | |
7356 | vml[c]->vdev_top->vdev_ms_array) == 0); | |
7357 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT, | |
7358 | vml[c]->vdev_top->vdev_ms_shift) == 0); | |
7359 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE, | |
7360 | vml[c]->vdev_top->vdev_asize) == 0); | |
7361 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT, | |
7362 | vml[c]->vdev_top->vdev_ashift) == 0); | |
e0ab3ab5 JS |
7363 | |
7364 | /* transfer per-vdev ZAPs */ | |
7365 | ASSERT3U(vml[c]->vdev_leaf_zap, !=, 0); | |
7366 | VERIFY0(nvlist_add_uint64(child[c], | |
7367 | ZPOOL_CONFIG_VDEV_LEAF_ZAP, vml[c]->vdev_leaf_zap)); | |
7368 | ||
7369 | ASSERT3U(vml[c]->vdev_top->vdev_top_zap, !=, 0); | |
7370 | VERIFY0(nvlist_add_uint64(child[c], | |
7371 | ZPOOL_CONFIG_VDEV_TOP_ZAP, | |
7372 | vml[c]->vdev_parent->vdev_top_zap)); | |
428870ff BB |
7373 | } |
7374 | ||
7375 | if (error != 0) { | |
7376 | kmem_free(vml, children * sizeof (vdev_t *)); | |
7377 | kmem_free(glist, children * sizeof (uint64_t)); | |
7378 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
7379 | } | |
7380 | ||
7381 | /* stop writers from using the disks */ | |
7382 | for (c = 0; c < children; c++) { | |
7383 | if (vml[c] != NULL) | |
7384 | vml[c]->vdev_offline = B_TRUE; | |
7385 | } | |
7386 | vdev_reopen(spa->spa_root_vdev); | |
34dc7c2f BB |
7387 | |
7388 | /* | |
428870ff BB |
7389 | * Temporarily record the splitting vdevs in the spa config. This |
7390 | * will disappear once the config is regenerated. | |
34dc7c2f | 7391 | */ |
79c76d5b | 7392 | VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
428870ff BB |
7393 | VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, |
7394 | glist, children) == 0); | |
7395 | kmem_free(glist, children * sizeof (uint64_t)); | |
34dc7c2f | 7396 | |
428870ff BB |
7397 | mutex_enter(&spa->spa_props_lock); |
7398 | VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT, | |
7399 | nvl) == 0); | |
7400 | mutex_exit(&spa->spa_props_lock); | |
7401 | spa->spa_config_splitting = nvl; | |
7402 | vdev_config_dirty(spa->spa_root_vdev); | |
7403 | ||
7404 | /* configure and create the new pool */ | |
7405 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0); | |
7406 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
7407 | exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0); | |
7408 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
7409 | spa_version(spa)) == 0); | |
7410 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
7411 | spa->spa_config_txg) == 0); | |
7412 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
7413 | spa_generate_guid(NULL)) == 0); | |
e0ab3ab5 | 7414 | VERIFY0(nvlist_add_boolean(config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)); |
428870ff BB |
7415 | (void) nvlist_lookup_string(props, |
7416 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
34dc7c2f | 7417 | |
428870ff BB |
7418 | /* add the new pool to the namespace */ |
7419 | newspa = spa_add(newname, config, altroot); | |
e0ab3ab5 | 7420 | newspa->spa_avz_action = AVZ_ACTION_REBUILD; |
428870ff BB |
7421 | newspa->spa_config_txg = spa->spa_config_txg; |
7422 | spa_set_log_state(newspa, SPA_LOG_CLEAR); | |
7423 | ||
7424 | /* release the spa config lock, retaining the namespace lock */ | |
7425 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
7426 | ||
7427 | if (zio_injection_enabled) | |
7428 | zio_handle_panic_injection(spa, FTAG, 1); | |
7429 | ||
7430 | spa_activate(newspa, spa_mode_global); | |
7431 | spa_async_suspend(newspa); | |
7432 | ||
c10d37dd | 7433 | /* |
1b939560 BB |
7434 | * Temporarily stop the initializing and TRIM activity. We set the |
7435 | * state to ACTIVE so that we know to resume initializing or TRIM | |
7436 | * once the split has completed. | |
c10d37dd | 7437 | */ |
1b939560 BB |
7438 | list_t vd_initialize_list; |
7439 | list_create(&vd_initialize_list, sizeof (vdev_t), | |
c10d37dd GW |
7440 | offsetof(vdev_t, vdev_initialize_node)); |
7441 | ||
1b939560 BB |
7442 | list_t vd_trim_list; |
7443 | list_create(&vd_trim_list, sizeof (vdev_t), | |
7444 | offsetof(vdev_t, vdev_trim_node)); | |
7445 | ||
619f0976 GW |
7446 | for (c = 0; c < children; c++) { |
7447 | if (vml[c] != NULL) { | |
619f0976 | 7448 | mutex_enter(&vml[c]->vdev_initialize_lock); |
1b939560 BB |
7449 | vdev_initialize_stop(vml[c], |
7450 | VDEV_INITIALIZE_ACTIVE, &vd_initialize_list); | |
619f0976 | 7451 | mutex_exit(&vml[c]->vdev_initialize_lock); |
1b939560 BB |
7452 | |
7453 | mutex_enter(&vml[c]->vdev_trim_lock); | |
7454 | vdev_trim_stop(vml[c], VDEV_TRIM_ACTIVE, &vd_trim_list); | |
7455 | mutex_exit(&vml[c]->vdev_trim_lock); | |
619f0976 GW |
7456 | } |
7457 | } | |
1b939560 BB |
7458 | |
7459 | vdev_initialize_stop_wait(spa, &vd_initialize_list); | |
7460 | vdev_trim_stop_wait(spa, &vd_trim_list); | |
7461 | ||
7462 | list_destroy(&vd_initialize_list); | |
7463 | list_destroy(&vd_trim_list); | |
619f0976 | 7464 | |
6cb8e530 PZ |
7465 | newspa->spa_config_source = SPA_CONFIG_SRC_SPLIT; |
7466 | ||
428870ff | 7467 | /* create the new pool from the disks of the original pool */ |
6cb8e530 | 7468 | error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE); |
428870ff BB |
7469 | if (error) |
7470 | goto out; | |
7471 | ||
7472 | /* if that worked, generate a real config for the new pool */ | |
7473 | if (newspa->spa_root_vdev != NULL) { | |
7474 | VERIFY(nvlist_alloc(&newspa->spa_config_splitting, | |
79c76d5b | 7475 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
428870ff BB |
7476 | VERIFY(nvlist_add_uint64(newspa->spa_config_splitting, |
7477 | ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0); | |
7478 | spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL, | |
7479 | B_TRUE)); | |
9babb374 | 7480 | } |
34dc7c2f | 7481 | |
428870ff BB |
7482 | /* set the props */ |
7483 | if (props != NULL) { | |
7484 | spa_configfile_set(newspa, props, B_FALSE); | |
7485 | error = spa_prop_set(newspa, props); | |
7486 | if (error) | |
7487 | goto out; | |
7488 | } | |
34dc7c2f | 7489 | |
428870ff BB |
7490 | /* flush everything */ |
7491 | txg = spa_vdev_config_enter(newspa); | |
7492 | vdev_config_dirty(newspa->spa_root_vdev); | |
7493 | (void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG); | |
34dc7c2f | 7494 | |
428870ff BB |
7495 | if (zio_injection_enabled) |
7496 | zio_handle_panic_injection(spa, FTAG, 2); | |
34dc7c2f | 7497 | |
428870ff | 7498 | spa_async_resume(newspa); |
34dc7c2f | 7499 | |
428870ff BB |
7500 | /* finally, update the original pool's config */ |
7501 | txg = spa_vdev_config_enter(spa); | |
7502 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
7503 | error = dmu_tx_assign(tx, TXG_WAIT); | |
7504 | if (error != 0) | |
7505 | dmu_tx_abort(tx); | |
7506 | for (c = 0; c < children; c++) { | |
7507 | if (vml[c] != NULL) { | |
234234ca RS |
7508 | vdev_t *tvd = vml[c]->vdev_top; |
7509 | ||
7510 | /* | |
7511 | * Need to be sure the detachable VDEV is not | |
7512 | * on any *other* txg's DTL list to prevent it | |
7513 | * from being accessed after it's freed. | |
7514 | */ | |
7515 | for (int t = 0; t < TXG_SIZE; t++) { | |
7516 | (void) txg_list_remove_this( | |
7517 | &tvd->vdev_dtl_list, vml[c], t); | |
7518 | } | |
7519 | ||
428870ff BB |
7520 | vdev_split(vml[c]); |
7521 | if (error == 0) | |
6f1ffb06 MA |
7522 | spa_history_log_internal(spa, "detach", tx, |
7523 | "vdev=%s", vml[c]->vdev_path); | |
e0ab3ab5 | 7524 | |
428870ff | 7525 | vdev_free(vml[c]); |
34dc7c2f | 7526 | } |
34dc7c2f | 7527 | } |
e0ab3ab5 | 7528 | spa->spa_avz_action = AVZ_ACTION_REBUILD; |
428870ff BB |
7529 | vdev_config_dirty(spa->spa_root_vdev); |
7530 | spa->spa_config_splitting = NULL; | |
7531 | nvlist_free(nvl); | |
7532 | if (error == 0) | |
7533 | dmu_tx_commit(tx); | |
7534 | (void) spa_vdev_exit(spa, NULL, txg, 0); | |
7535 | ||
7536 | if (zio_injection_enabled) | |
7537 | zio_handle_panic_injection(spa, FTAG, 3); | |
7538 | ||
7539 | /* split is complete; log a history record */ | |
6f1ffb06 MA |
7540 | spa_history_log_internal(newspa, "split", NULL, |
7541 | "from pool %s", spa_name(spa)); | |
428870ff BB |
7542 | |
7543 | kmem_free(vml, children * sizeof (vdev_t *)); | |
7544 | ||
7545 | /* if we're not going to mount the filesystems in userland, export */ | |
7546 | if (exp) | |
7547 | error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL, | |
7548 | B_FALSE, B_FALSE); | |
7549 | ||
7550 | return (error); | |
7551 | ||
7552 | out: | |
7553 | spa_unload(newspa); | |
7554 | spa_deactivate(newspa); | |
7555 | spa_remove(newspa); | |
7556 | ||
7557 | txg = spa_vdev_config_enter(spa); | |
7558 | ||
7559 | /* re-online all offlined disks */ | |
7560 | for (c = 0; c < children; c++) { | |
7561 | if (vml[c] != NULL) | |
7562 | vml[c]->vdev_offline = B_FALSE; | |
7563 | } | |
619f0976 | 7564 | |
1b939560 | 7565 | /* restart initializing or trimming disks as necessary */ |
619f0976 | 7566 | spa_async_request(spa, SPA_ASYNC_INITIALIZE_RESTART); |
1b939560 BB |
7567 | spa_async_request(spa, SPA_ASYNC_TRIM_RESTART); |
7568 | spa_async_request(spa, SPA_ASYNC_AUTOTRIM_RESTART); | |
619f0976 | 7569 | |
428870ff BB |
7570 | vdev_reopen(spa->spa_root_vdev); |
7571 | ||
7572 | nvlist_free(spa->spa_config_splitting); | |
7573 | spa->spa_config_splitting = NULL; | |
7574 | (void) spa_vdev_exit(spa, NULL, txg, error); | |
34dc7c2f | 7575 | |
428870ff | 7576 | kmem_free(vml, children * sizeof (vdev_t *)); |
34dc7c2f BB |
7577 | return (error); |
7578 | } | |
7579 | ||
34dc7c2f BB |
7580 | /* |
7581 | * Find any device that's done replacing, or a vdev marked 'unspare' that's | |
d3cc8b15 | 7582 | * currently spared, so we can detach it. |
34dc7c2f BB |
7583 | */ |
7584 | static vdev_t * | |
7585 | spa_vdev_resilver_done_hunt(vdev_t *vd) | |
7586 | { | |
7587 | vdev_t *newvd, *oldvd; | |
34dc7c2f | 7588 | |
1c27024e | 7589 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
7590 | oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
7591 | if (oldvd != NULL) | |
7592 | return (oldvd); | |
7593 | } | |
7594 | ||
7595 | /* | |
572e2857 BB |
7596 | * Check for a completed replacement. We always consider the first |
7597 | * vdev in the list to be the oldest vdev, and the last one to be | |
7598 | * the newest (see spa_vdev_attach() for how that works). In | |
7599 | * the case where the newest vdev is faulted, we will not automatically | |
7600 | * remove it after a resilver completes. This is OK as it will require | |
7601 | * user intervention to determine which disk the admin wishes to keep. | |
34dc7c2f | 7602 | */ |
572e2857 BB |
7603 | if (vd->vdev_ops == &vdev_replacing_ops) { |
7604 | ASSERT(vd->vdev_children > 1); | |
7605 | ||
7606 | newvd = vd->vdev_child[vd->vdev_children - 1]; | |
34dc7c2f | 7607 | oldvd = vd->vdev_child[0]; |
34dc7c2f | 7608 | |
fb5f0bc8 | 7609 | if (vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 7610 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
fb5f0bc8 | 7611 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 7612 | return (oldvd); |
34dc7c2f BB |
7613 | } |
7614 | ||
7615 | /* | |
7616 | * Check for a completed resilver with the 'unspare' flag set. | |
f65fbee1 | 7617 | * Also potentially update faulted state. |
34dc7c2f | 7618 | */ |
572e2857 BB |
7619 | if (vd->vdev_ops == &vdev_spare_ops) { |
7620 | vdev_t *first = vd->vdev_child[0]; | |
7621 | vdev_t *last = vd->vdev_child[vd->vdev_children - 1]; | |
7622 | ||
7623 | if (last->vdev_unspare) { | |
7624 | oldvd = first; | |
7625 | newvd = last; | |
7626 | } else if (first->vdev_unspare) { | |
7627 | oldvd = last; | |
7628 | newvd = first; | |
7629 | } else { | |
7630 | oldvd = NULL; | |
7631 | } | |
34dc7c2f | 7632 | |
572e2857 | 7633 | if (oldvd != NULL && |
fb5f0bc8 | 7634 | vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 7635 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
572e2857 | 7636 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 7637 | return (oldvd); |
572e2857 | 7638 | |
f65fbee1 JJ |
7639 | vdev_propagate_state(vd); |
7640 | ||
572e2857 BB |
7641 | /* |
7642 | * If there are more than two spares attached to a disk, | |
7643 | * and those spares are not required, then we want to | |
7644 | * attempt to free them up now so that they can be used | |
7645 | * by other pools. Once we're back down to a single | |
7646 | * disk+spare, we stop removing them. | |
7647 | */ | |
7648 | if (vd->vdev_children > 2) { | |
7649 | newvd = vd->vdev_child[1]; | |
7650 | ||
7651 | if (newvd->vdev_isspare && last->vdev_isspare && | |
7652 | vdev_dtl_empty(last, DTL_MISSING) && | |
7653 | vdev_dtl_empty(last, DTL_OUTAGE) && | |
7654 | !vdev_dtl_required(newvd)) | |
7655 | return (newvd); | |
34dc7c2f | 7656 | } |
34dc7c2f BB |
7657 | } |
7658 | ||
7659 | return (NULL); | |
7660 | } | |
7661 | ||
7662 | static void | |
7663 | spa_vdev_resilver_done(spa_t *spa) | |
7664 | { | |
fb5f0bc8 BB |
7665 | vdev_t *vd, *pvd, *ppvd; |
7666 | uint64_t guid, sguid, pguid, ppguid; | |
34dc7c2f | 7667 | |
fb5f0bc8 | 7668 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
7669 | |
7670 | while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { | |
fb5f0bc8 BB |
7671 | pvd = vd->vdev_parent; |
7672 | ppvd = pvd->vdev_parent; | |
34dc7c2f | 7673 | guid = vd->vdev_guid; |
fb5f0bc8 BB |
7674 | pguid = pvd->vdev_guid; |
7675 | ppguid = ppvd->vdev_guid; | |
7676 | sguid = 0; | |
34dc7c2f BB |
7677 | /* |
7678 | * If we have just finished replacing a hot spared device, then | |
7679 | * we need to detach the parent's first child (the original hot | |
7680 | * spare) as well. | |
7681 | */ | |
572e2857 BB |
7682 | if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0 && |
7683 | ppvd->vdev_children == 2) { | |
34dc7c2f | 7684 | ASSERT(pvd->vdev_ops == &vdev_replacing_ops); |
fb5f0bc8 | 7685 | sguid = ppvd->vdev_child[1]->vdev_guid; |
34dc7c2f | 7686 | } |
5d1f7fb6 GW |
7687 | ASSERT(vd->vdev_resilver_txg == 0 || !vdev_dtl_required(vd)); |
7688 | ||
fb5f0bc8 BB |
7689 | spa_config_exit(spa, SCL_ALL, FTAG); |
7690 | if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) | |
34dc7c2f | 7691 | return; |
fb5f0bc8 | 7692 | if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) |
34dc7c2f | 7693 | return; |
fb5f0bc8 | 7694 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
7695 | } |
7696 | ||
fb5f0bc8 | 7697 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
7698 | } |
7699 | ||
7700 | /* | |
428870ff | 7701 | * Update the stored path or FRU for this vdev. |
34dc7c2f BB |
7702 | */ |
7703 | int | |
9babb374 BB |
7704 | spa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value, |
7705 | boolean_t ispath) | |
34dc7c2f | 7706 | { |
b128c09f | 7707 | vdev_t *vd; |
428870ff | 7708 | boolean_t sync = B_FALSE; |
34dc7c2f | 7709 | |
572e2857 BB |
7710 | ASSERT(spa_writeable(spa)); |
7711 | ||
428870ff | 7712 | spa_vdev_state_enter(spa, SCL_ALL); |
34dc7c2f | 7713 | |
9babb374 | 7714 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
428870ff | 7715 | return (spa_vdev_state_exit(spa, NULL, ENOENT)); |
34dc7c2f BB |
7716 | |
7717 | if (!vd->vdev_ops->vdev_op_leaf) | |
428870ff | 7718 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 7719 | |
9babb374 | 7720 | if (ispath) { |
428870ff BB |
7721 | if (strcmp(value, vd->vdev_path) != 0) { |
7722 | spa_strfree(vd->vdev_path); | |
7723 | vd->vdev_path = spa_strdup(value); | |
7724 | sync = B_TRUE; | |
7725 | } | |
9babb374 | 7726 | } else { |
428870ff BB |
7727 | if (vd->vdev_fru == NULL) { |
7728 | vd->vdev_fru = spa_strdup(value); | |
7729 | sync = B_TRUE; | |
7730 | } else if (strcmp(value, vd->vdev_fru) != 0) { | |
9babb374 | 7731 | spa_strfree(vd->vdev_fru); |
428870ff BB |
7732 | vd->vdev_fru = spa_strdup(value); |
7733 | sync = B_TRUE; | |
7734 | } | |
9babb374 | 7735 | } |
34dc7c2f | 7736 | |
428870ff | 7737 | return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0)); |
34dc7c2f BB |
7738 | } |
7739 | ||
9babb374 BB |
7740 | int |
7741 | spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) | |
7742 | { | |
7743 | return (spa_vdev_set_common(spa, guid, newpath, B_TRUE)); | |
7744 | } | |
7745 | ||
7746 | int | |
7747 | spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru) | |
7748 | { | |
7749 | return (spa_vdev_set_common(spa, guid, newfru, B_FALSE)); | |
7750 | } | |
7751 | ||
34dc7c2f BB |
7752 | /* |
7753 | * ========================================================================== | |
428870ff | 7754 | * SPA Scanning |
34dc7c2f BB |
7755 | * ========================================================================== |
7756 | */ | |
0ea05c64 AP |
7757 | int |
7758 | spa_scrub_pause_resume(spa_t *spa, pool_scrub_cmd_t cmd) | |
7759 | { | |
7760 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
7761 | ||
7762 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
7763 | return (SET_ERROR(EBUSY)); | |
7764 | ||
7765 | return (dsl_scrub_set_pause_resume(spa->spa_dsl_pool, cmd)); | |
7766 | } | |
34dc7c2f | 7767 | |
34dc7c2f | 7768 | int |
428870ff BB |
7769 | spa_scan_stop(spa_t *spa) |
7770 | { | |
7771 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
7772 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
2e528b49 | 7773 | return (SET_ERROR(EBUSY)); |
428870ff BB |
7774 | return (dsl_scan_cancel(spa->spa_dsl_pool)); |
7775 | } | |
7776 | ||
7777 | int | |
7778 | spa_scan(spa_t *spa, pool_scan_func_t func) | |
34dc7c2f | 7779 | { |
b128c09f | 7780 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); |
34dc7c2f | 7781 | |
428870ff | 7782 | if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE) |
2e528b49 | 7783 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f | 7784 | |
fa241660 TC |
7785 | if (func == POOL_SCAN_RESILVER && |
7786 | !spa_feature_is_enabled(spa, SPA_FEATURE_RESILVER_DEFER)) | |
7787 | return (SET_ERROR(ENOTSUP)); | |
7788 | ||
34dc7c2f | 7789 | /* |
b128c09f BB |
7790 | * If a resilver was requested, but there is no DTL on a |
7791 | * writeable leaf device, we have nothing to do. | |
34dc7c2f | 7792 | */ |
428870ff | 7793 | if (func == POOL_SCAN_RESILVER && |
b128c09f BB |
7794 | !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { |
7795 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f BB |
7796 | return (0); |
7797 | } | |
7798 | ||
428870ff | 7799 | return (dsl_scan(spa->spa_dsl_pool, func)); |
34dc7c2f BB |
7800 | } |
7801 | ||
7802 | /* | |
7803 | * ========================================================================== | |
7804 | * SPA async task processing | |
7805 | * ========================================================================== | |
7806 | */ | |
7807 | ||
7808 | static void | |
7809 | spa_async_remove(spa_t *spa, vdev_t *vd) | |
7810 | { | |
b128c09f | 7811 | if (vd->vdev_remove_wanted) { |
428870ff BB |
7812 | vd->vdev_remove_wanted = B_FALSE; |
7813 | vd->vdev_delayed_close = B_FALSE; | |
b128c09f | 7814 | vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); |
428870ff BB |
7815 | |
7816 | /* | |
7817 | * We want to clear the stats, but we don't want to do a full | |
7818 | * vdev_clear() as that will cause us to throw away | |
7819 | * degraded/faulted state as well as attempt to reopen the | |
7820 | * device, all of which is a waste. | |
7821 | */ | |
7822 | vd->vdev_stat.vs_read_errors = 0; | |
7823 | vd->vdev_stat.vs_write_errors = 0; | |
7824 | vd->vdev_stat.vs_checksum_errors = 0; | |
7825 | ||
b128c09f BB |
7826 | vdev_state_dirty(vd->vdev_top); |
7827 | } | |
34dc7c2f | 7828 | |
1c27024e | 7829 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f BB |
7830 | spa_async_remove(spa, vd->vdev_child[c]); |
7831 | } | |
7832 | ||
7833 | static void | |
7834 | spa_async_probe(spa_t *spa, vdev_t *vd) | |
7835 | { | |
7836 | if (vd->vdev_probe_wanted) { | |
428870ff | 7837 | vd->vdev_probe_wanted = B_FALSE; |
b128c09f | 7838 | vdev_reopen(vd); /* vdev_open() does the actual probe */ |
34dc7c2f | 7839 | } |
b128c09f | 7840 | |
1c27024e | 7841 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f | 7842 | spa_async_probe(spa, vd->vdev_child[c]); |
34dc7c2f BB |
7843 | } |
7844 | ||
9babb374 BB |
7845 | static void |
7846 | spa_async_autoexpand(spa_t *spa, vdev_t *vd) | |
7847 | { | |
9babb374 BB |
7848 | if (!spa->spa_autoexpand) |
7849 | return; | |
7850 | ||
1c27024e | 7851 | for (int c = 0; c < vd->vdev_children; c++) { |
9babb374 BB |
7852 | vdev_t *cvd = vd->vdev_child[c]; |
7853 | spa_async_autoexpand(spa, cvd); | |
7854 | } | |
7855 | ||
7856 | if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL) | |
7857 | return; | |
7858 | ||
12fa0466 | 7859 | spa_event_notify(vd->vdev_spa, vd, NULL, ESC_ZFS_VDEV_AUTOEXPAND); |
9babb374 BB |
7860 | } |
7861 | ||
34dc7c2f | 7862 | static void |
c25b8f99 | 7863 | spa_async_thread(void *arg) |
34dc7c2f | 7864 | { |
c25b8f99 | 7865 | spa_t *spa = (spa_t *)arg; |
80a91e74 | 7866 | dsl_pool_t *dp = spa->spa_dsl_pool; |
867959b5 | 7867 | int tasks; |
34dc7c2f BB |
7868 | |
7869 | ASSERT(spa->spa_sync_on); | |
7870 | ||
7871 | mutex_enter(&spa->spa_async_lock); | |
7872 | tasks = spa->spa_async_tasks; | |
7873 | spa->spa_async_tasks = 0; | |
7874 | mutex_exit(&spa->spa_async_lock); | |
7875 | ||
7876 | /* | |
7877 | * See if the config needs to be updated. | |
7878 | */ | |
7879 | if (tasks & SPA_ASYNC_CONFIG_UPDATE) { | |
428870ff | 7880 | uint64_t old_space, new_space; |
9babb374 | 7881 | |
34dc7c2f | 7882 | mutex_enter(&spa_namespace_lock); |
428870ff | 7883 | old_space = metaslab_class_get_space(spa_normal_class(spa)); |
cc99f275 DB |
7884 | old_space += metaslab_class_get_space(spa_special_class(spa)); |
7885 | old_space += metaslab_class_get_space(spa_dedup_class(spa)); | |
7886 | ||
34dc7c2f | 7887 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
cc99f275 | 7888 | |
428870ff | 7889 | new_space = metaslab_class_get_space(spa_normal_class(spa)); |
cc99f275 DB |
7890 | new_space += metaslab_class_get_space(spa_special_class(spa)); |
7891 | new_space += metaslab_class_get_space(spa_dedup_class(spa)); | |
34dc7c2f | 7892 | mutex_exit(&spa_namespace_lock); |
9babb374 BB |
7893 | |
7894 | /* | |
7895 | * If the pool grew as a result of the config update, | |
7896 | * then log an internal history event. | |
7897 | */ | |
428870ff | 7898 | if (new_space != old_space) { |
6f1ffb06 | 7899 | spa_history_log_internal(spa, "vdev online", NULL, |
45d1cae3 | 7900 | "pool '%s' size: %llu(+%llu)", |
74756182 MM |
7901 | spa_name(spa), (u_longlong_t)new_space, |
7902 | (u_longlong_t)(new_space - old_space)); | |
9babb374 | 7903 | } |
34dc7c2f BB |
7904 | } |
7905 | ||
7906 | /* | |
7907 | * See if any devices need to be marked REMOVED. | |
34dc7c2f | 7908 | */ |
b128c09f | 7909 | if (tasks & SPA_ASYNC_REMOVE) { |
428870ff | 7910 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 7911 | spa_async_remove(spa, spa->spa_root_vdev); |
867959b5 | 7912 | for (int i = 0; i < spa->spa_l2cache.sav_count; i++) |
b128c09f | 7913 | spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); |
867959b5 | 7914 | for (int i = 0; i < spa->spa_spares.sav_count; i++) |
b128c09f BB |
7915 | spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); |
7916 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
34dc7c2f BB |
7917 | } |
7918 | ||
9babb374 BB |
7919 | if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) { |
7920 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
7921 | spa_async_autoexpand(spa, spa->spa_root_vdev); | |
7922 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
7923 | } | |
7924 | ||
34dc7c2f | 7925 | /* |
b128c09f | 7926 | * See if any devices need to be probed. |
34dc7c2f | 7927 | */ |
b128c09f | 7928 | if (tasks & SPA_ASYNC_PROBE) { |
428870ff | 7929 | spa_vdev_state_enter(spa, SCL_NONE); |
b128c09f BB |
7930 | spa_async_probe(spa, spa->spa_root_vdev); |
7931 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
7932 | } | |
34dc7c2f BB |
7933 | |
7934 | /* | |
b128c09f | 7935 | * If any devices are done replacing, detach them. |
34dc7c2f | 7936 | */ |
b128c09f BB |
7937 | if (tasks & SPA_ASYNC_RESILVER_DONE) |
7938 | spa_vdev_resilver_done(spa); | |
34dc7c2f BB |
7939 | |
7940 | /* | |
7941 | * Kick off a resilver. | |
7942 | */ | |
80a91e74 TC |
7943 | if (tasks & SPA_ASYNC_RESILVER && |
7944 | (!dsl_scan_resilvering(dp) || | |
7945 | !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_RESILVER_DEFER))) | |
7946 | dsl_resilver_restart(dp, 0); | |
34dc7c2f | 7947 | |
619f0976 GW |
7948 | if (tasks & SPA_ASYNC_INITIALIZE_RESTART) { |
7949 | mutex_enter(&spa_namespace_lock); | |
7950 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
7951 | vdev_initialize_restart(spa->spa_root_vdev); | |
7952 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
7953 | mutex_exit(&spa_namespace_lock); | |
7954 | } | |
7955 | ||
1b939560 BB |
7956 | if (tasks & SPA_ASYNC_TRIM_RESTART) { |
7957 | mutex_enter(&spa_namespace_lock); | |
7958 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
7959 | vdev_trim_restart(spa->spa_root_vdev); | |
7960 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
7961 | mutex_exit(&spa_namespace_lock); | |
7962 | } | |
7963 | ||
7964 | if (tasks & SPA_ASYNC_AUTOTRIM_RESTART) { | |
7965 | mutex_enter(&spa_namespace_lock); | |
7966 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
7967 | vdev_autotrim_restart(spa); | |
7968 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
7969 | mutex_exit(&spa_namespace_lock); | |
7970 | } | |
7971 | ||
34dc7c2f BB |
7972 | /* |
7973 | * Let the world know that we're done. | |
7974 | */ | |
7975 | mutex_enter(&spa->spa_async_lock); | |
7976 | spa->spa_async_thread = NULL; | |
7977 | cv_broadcast(&spa->spa_async_cv); | |
7978 | mutex_exit(&spa->spa_async_lock); | |
7979 | thread_exit(); | |
7980 | } | |
7981 | ||
7982 | void | |
7983 | spa_async_suspend(spa_t *spa) | |
7984 | { | |
7985 | mutex_enter(&spa->spa_async_lock); | |
7986 | spa->spa_async_suspended++; | |
9d5b5245 | 7987 | while (spa->spa_async_thread != NULL) |
34dc7c2f BB |
7988 | cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); |
7989 | mutex_exit(&spa->spa_async_lock); | |
a1d477c2 MA |
7990 | |
7991 | spa_vdev_remove_suspend(spa); | |
9d5b5245 SD |
7992 | |
7993 | zthr_t *condense_thread = spa->spa_condense_zthr; | |
61c3391a SD |
7994 | if (condense_thread != NULL) |
7995 | zthr_cancel(condense_thread); | |
d2734cce SD |
7996 | |
7997 | zthr_t *discard_thread = spa->spa_checkpoint_discard_zthr; | |
61c3391a SD |
7998 | if (discard_thread != NULL) |
7999 | zthr_cancel(discard_thread); | |
37f03da8 SH |
8000 | |
8001 | zthr_t *ll_delete_thread = spa->spa_livelist_delete_zthr; | |
8002 | if (ll_delete_thread != NULL) | |
8003 | zthr_cancel(ll_delete_thread); | |
8004 | ||
8005 | zthr_t *ll_condense_thread = spa->spa_livelist_condense_zthr; | |
8006 | if (ll_condense_thread != NULL) | |
8007 | zthr_cancel(ll_condense_thread); | |
34dc7c2f BB |
8008 | } |
8009 | ||
8010 | void | |
8011 | spa_async_resume(spa_t *spa) | |
8012 | { | |
8013 | mutex_enter(&spa->spa_async_lock); | |
8014 | ASSERT(spa->spa_async_suspended != 0); | |
8015 | spa->spa_async_suspended--; | |
8016 | mutex_exit(&spa->spa_async_lock); | |
a1d477c2 | 8017 | spa_restart_removal(spa); |
9d5b5245 SD |
8018 | |
8019 | zthr_t *condense_thread = spa->spa_condense_zthr; | |
61c3391a | 8020 | if (condense_thread != NULL) |
9d5b5245 | 8021 | zthr_resume(condense_thread); |
d2734cce SD |
8022 | |
8023 | zthr_t *discard_thread = spa->spa_checkpoint_discard_zthr; | |
61c3391a | 8024 | if (discard_thread != NULL) |
d2734cce | 8025 | zthr_resume(discard_thread); |
37f03da8 SH |
8026 | |
8027 | zthr_t *ll_delete_thread = spa->spa_livelist_delete_zthr; | |
8028 | if (ll_delete_thread != NULL) | |
8029 | zthr_resume(ll_delete_thread); | |
8030 | ||
8031 | zthr_t *ll_condense_thread = spa->spa_livelist_condense_zthr; | |
8032 | if (ll_condense_thread != NULL) | |
8033 | zthr_resume(ll_condense_thread); | |
34dc7c2f BB |
8034 | } |
8035 | ||
e6cfd633 WA |
8036 | static boolean_t |
8037 | spa_async_tasks_pending(spa_t *spa) | |
8038 | { | |
8039 | uint_t non_config_tasks; | |
8040 | uint_t config_task; | |
8041 | boolean_t config_task_suspended; | |
8042 | ||
8043 | non_config_tasks = spa->spa_async_tasks & ~SPA_ASYNC_CONFIG_UPDATE; | |
8044 | config_task = spa->spa_async_tasks & SPA_ASYNC_CONFIG_UPDATE; | |
8045 | if (spa->spa_ccw_fail_time == 0) { | |
8046 | config_task_suspended = B_FALSE; | |
8047 | } else { | |
8048 | config_task_suspended = | |
8049 | (gethrtime() - spa->spa_ccw_fail_time) < | |
05852b34 | 8050 | ((hrtime_t)zfs_ccw_retry_interval * NANOSEC); |
e6cfd633 WA |
8051 | } |
8052 | ||
8053 | return (non_config_tasks || (config_task && !config_task_suspended)); | |
8054 | } | |
8055 | ||
34dc7c2f BB |
8056 | static void |
8057 | spa_async_dispatch(spa_t *spa) | |
8058 | { | |
8059 | mutex_enter(&spa->spa_async_lock); | |
e6cfd633 WA |
8060 | if (spa_async_tasks_pending(spa) && |
8061 | !spa->spa_async_suspended && | |
34dc7c2f | 8062 | spa->spa_async_thread == NULL && |
e6cfd633 | 8063 | rootdir != NULL) |
34dc7c2f BB |
8064 | spa->spa_async_thread = thread_create(NULL, 0, |
8065 | spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
8066 | mutex_exit(&spa->spa_async_lock); | |
8067 | } | |
8068 | ||
8069 | void | |
8070 | spa_async_request(spa_t *spa, int task) | |
8071 | { | |
428870ff | 8072 | zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task); |
34dc7c2f BB |
8073 | mutex_enter(&spa->spa_async_lock); |
8074 | spa->spa_async_tasks |= task; | |
8075 | mutex_exit(&spa->spa_async_lock); | |
8076 | } | |
8077 | ||
8078 | /* | |
8079 | * ========================================================================== | |
8080 | * SPA syncing routines | |
8081 | * ========================================================================== | |
8082 | */ | |
8083 | ||
37f03da8 | 8084 | |
428870ff | 8085 | static int |
37f03da8 SH |
8086 | bpobj_enqueue_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, |
8087 | dmu_tx_t *tx) | |
34dc7c2f | 8088 | { |
428870ff | 8089 | bpobj_t *bpo = arg; |
37f03da8 | 8090 | bpobj_enqueue(bpo, bp, bp_freed, tx); |
428870ff BB |
8091 | return (0); |
8092 | } | |
34dc7c2f | 8093 | |
37f03da8 SH |
8094 | int |
8095 | bpobj_enqueue_alloc_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
8096 | { | |
8097 | return (bpobj_enqueue_cb(arg, bp, B_FALSE, tx)); | |
8098 | } | |
8099 | ||
8100 | int | |
8101 | bpobj_enqueue_free_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
8102 | { | |
8103 | return (bpobj_enqueue_cb(arg, bp, B_TRUE, tx)); | |
8104 | } | |
8105 | ||
428870ff BB |
8106 | static int |
8107 | spa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
8108 | { | |
8109 | zio_t *zio = arg; | |
34dc7c2f | 8110 | |
428870ff BB |
8111 | zio_nowait(zio_free_sync(zio, zio->io_spa, dmu_tx_get_txg(tx), bp, |
8112 | zio->io_flags)); | |
8113 | return (0); | |
34dc7c2f BB |
8114 | } |
8115 | ||
37f03da8 SH |
8116 | static int |
8117 | bpobj_spa_free_sync_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, | |
8118 | dmu_tx_t *tx) | |
8119 | { | |
8120 | ASSERT(!bp_freed); | |
8121 | return (spa_free_sync_cb(arg, bp, tx)); | |
8122 | } | |
8123 | ||
e8b96c60 MA |
8124 | /* |
8125 | * Note: this simple function is not inlined to make it easier to dtrace the | |
8126 | * amount of time spent syncing frees. | |
8127 | */ | |
8128 | static void | |
8129 | spa_sync_frees(spa_t *spa, bplist_t *bpl, dmu_tx_t *tx) | |
8130 | { | |
8131 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
8132 | bplist_iterate(bpl, spa_free_sync_cb, zio, tx); | |
8133 | VERIFY(zio_wait(zio) == 0); | |
8134 | } | |
8135 | ||
8136 | /* | |
8137 | * Note: this simple function is not inlined to make it easier to dtrace the | |
8138 | * amount of time spent syncing deferred frees. | |
8139 | */ | |
8140 | static void | |
8141 | spa_sync_deferred_frees(spa_t *spa, dmu_tx_t *tx) | |
8142 | { | |
8dc2197b SD |
8143 | if (spa_sync_pass(spa) != 1) |
8144 | return; | |
8145 | ||
93e28d66 SD |
8146 | /* |
8147 | * Note: | |
8148 | * If the log space map feature is active, we stop deferring | |
8149 | * frees to the next TXG and therefore running this function | |
8150 | * would be considered a no-op as spa_deferred_bpobj should | |
8151 | * not have any entries. | |
8152 | * | |
8153 | * That said we run this function anyway (instead of returning | |
8154 | * immediately) for the edge-case scenario where we just | |
8155 | * activated the log space map feature in this TXG but we have | |
8156 | * deferred frees from the previous TXG. | |
8157 | */ | |
e8b96c60 MA |
8158 | zio_t *zio = zio_root(spa, NULL, NULL, 0); |
8159 | VERIFY3U(bpobj_iterate(&spa->spa_deferred_bpobj, | |
37f03da8 | 8160 | bpobj_spa_free_sync_cb, zio, tx), ==, 0); |
e8b96c60 MA |
8161 | VERIFY0(zio_wait(zio)); |
8162 | } | |
8163 | ||
34dc7c2f BB |
8164 | static void |
8165 | spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) | |
8166 | { | |
8167 | char *packed = NULL; | |
b128c09f | 8168 | size_t bufsize; |
34dc7c2f BB |
8169 | size_t nvsize = 0; |
8170 | dmu_buf_t *db; | |
8171 | ||
8172 | VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
8173 | ||
b128c09f BB |
8174 | /* |
8175 | * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration | |
b0bc7a84 | 8176 | * information. This avoids the dmu_buf_will_dirty() path and |
b128c09f BB |
8177 | * saves us a pre-read to get data we don't actually care about. |
8178 | */ | |
9ae529ec | 8179 | bufsize = P2ROUNDUP((uint64_t)nvsize, SPA_CONFIG_BLOCKSIZE); |
79c76d5b | 8180 | packed = vmem_alloc(bufsize, KM_SLEEP); |
34dc7c2f BB |
8181 | |
8182 | VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
79c76d5b | 8183 | KM_SLEEP) == 0); |
b128c09f | 8184 | bzero(packed + nvsize, bufsize - nvsize); |
34dc7c2f | 8185 | |
b128c09f | 8186 | dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); |
34dc7c2f | 8187 | |
00b46022 | 8188 | vmem_free(packed, bufsize); |
34dc7c2f BB |
8189 | |
8190 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
8191 | dmu_buf_will_dirty(db, tx); | |
8192 | *(uint64_t *)db->db_data = nvsize; | |
8193 | dmu_buf_rele(db, FTAG); | |
8194 | } | |
8195 | ||
8196 | static void | |
8197 | spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, | |
8198 | const char *config, const char *entry) | |
8199 | { | |
8200 | nvlist_t *nvroot; | |
8201 | nvlist_t **list; | |
8202 | int i; | |
8203 | ||
8204 | if (!sav->sav_sync) | |
8205 | return; | |
8206 | ||
8207 | /* | |
8208 | * Update the MOS nvlist describing the list of available devices. | |
8209 | * spa_validate_aux() will have already made sure this nvlist is | |
8210 | * valid and the vdevs are labeled appropriately. | |
8211 | */ | |
8212 | if (sav->sav_object == 0) { | |
8213 | sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
8214 | DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
8215 | sizeof (uint64_t), tx); | |
8216 | VERIFY(zap_update(spa->spa_meta_objset, | |
8217 | DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, | |
8218 | &sav->sav_object, tx) == 0); | |
8219 | } | |
8220 | ||
79c76d5b | 8221 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
8222 | if (sav->sav_count == 0) { |
8223 | VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
8224 | } else { | |
79c76d5b | 8225 | list = kmem_alloc(sav->sav_count*sizeof (void *), KM_SLEEP); |
34dc7c2f BB |
8226 | for (i = 0; i < sav->sav_count; i++) |
8227 | list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
428870ff | 8228 | B_FALSE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
8229 | VERIFY(nvlist_add_nvlist_array(nvroot, config, list, |
8230 | sav->sav_count) == 0); | |
8231 | for (i = 0; i < sav->sav_count; i++) | |
8232 | nvlist_free(list[i]); | |
8233 | kmem_free(list, sav->sav_count * sizeof (void *)); | |
8234 | } | |
8235 | ||
8236 | spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); | |
8237 | nvlist_free(nvroot); | |
8238 | ||
8239 | sav->sav_sync = B_FALSE; | |
8240 | } | |
8241 | ||
e0ab3ab5 JS |
8242 | /* |
8243 | * Rebuild spa's all-vdev ZAP from the vdev ZAPs indicated in each vdev_t. | |
8244 | * The all-vdev ZAP must be empty. | |
8245 | */ | |
8246 | static void | |
8247 | spa_avz_build(vdev_t *vd, uint64_t avz, dmu_tx_t *tx) | |
8248 | { | |
8249 | spa_t *spa = vd->vdev_spa; | |
e0ab3ab5 JS |
8250 | |
8251 | if (vd->vdev_top_zap != 0) { | |
8252 | VERIFY0(zap_add_int(spa->spa_meta_objset, avz, | |
8253 | vd->vdev_top_zap, tx)); | |
8254 | } | |
8255 | if (vd->vdev_leaf_zap != 0) { | |
8256 | VERIFY0(zap_add_int(spa->spa_meta_objset, avz, | |
8257 | vd->vdev_leaf_zap, tx)); | |
8258 | } | |
1c27024e | 8259 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
8260 | spa_avz_build(vd->vdev_child[i], avz, tx); |
8261 | } | |
8262 | } | |
8263 | ||
34dc7c2f BB |
8264 | static void |
8265 | spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) | |
8266 | { | |
8267 | nvlist_t *config; | |
8268 | ||
e0ab3ab5 JS |
8269 | /* |
8270 | * If the pool is being imported from a pre-per-vdev-ZAP version of ZFS, | |
8271 | * its config may not be dirty but we still need to build per-vdev ZAPs. | |
8272 | * Similarly, if the pool is being assembled (e.g. after a split), we | |
8273 | * need to rebuild the AVZ although the config may not be dirty. | |
8274 | */ | |
8275 | if (list_is_empty(&spa->spa_config_dirty_list) && | |
8276 | spa->spa_avz_action == AVZ_ACTION_NONE) | |
34dc7c2f BB |
8277 | return; |
8278 | ||
b128c09f BB |
8279 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
8280 | ||
e0ab3ab5 | 8281 | ASSERT(spa->spa_avz_action == AVZ_ACTION_NONE || |
38640550 | 8282 | spa->spa_avz_action == AVZ_ACTION_INITIALIZE || |
e0ab3ab5 JS |
8283 | spa->spa_all_vdev_zaps != 0); |
8284 | ||
8285 | if (spa->spa_avz_action == AVZ_ACTION_REBUILD) { | |
e0ab3ab5 JS |
8286 | /* Make and build the new AVZ */ |
8287 | uint64_t new_avz = zap_create(spa->spa_meta_objset, | |
8288 | DMU_OTN_ZAP_METADATA, DMU_OT_NONE, 0, tx); | |
8289 | spa_avz_build(spa->spa_root_vdev, new_avz, tx); | |
8290 | ||
8291 | /* Diff old AVZ with new one */ | |
1c27024e DB |
8292 | zap_cursor_t zc; |
8293 | zap_attribute_t za; | |
8294 | ||
e0ab3ab5 JS |
8295 | for (zap_cursor_init(&zc, spa->spa_meta_objset, |
8296 | spa->spa_all_vdev_zaps); | |
8297 | zap_cursor_retrieve(&zc, &za) == 0; | |
8298 | zap_cursor_advance(&zc)) { | |
8299 | uint64_t vdzap = za.za_first_integer; | |
8300 | if (zap_lookup_int(spa->spa_meta_objset, new_avz, | |
8301 | vdzap) == ENOENT) { | |
8302 | /* | |
8303 | * ZAP is listed in old AVZ but not in new one; | |
8304 | * destroy it | |
8305 | */ | |
8306 | VERIFY0(zap_destroy(spa->spa_meta_objset, vdzap, | |
8307 | tx)); | |
8308 | } | |
8309 | } | |
8310 | ||
8311 | zap_cursor_fini(&zc); | |
8312 | ||
8313 | /* Destroy the old AVZ */ | |
8314 | VERIFY0(zap_destroy(spa->spa_meta_objset, | |
8315 | spa->spa_all_vdev_zaps, tx)); | |
8316 | ||
8317 | /* Replace the old AVZ in the dir obj with the new one */ | |
8318 | VERIFY0(zap_update(spa->spa_meta_objset, | |
8319 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_VDEV_ZAP_MAP, | |
8320 | sizeof (new_avz), 1, &new_avz, tx)); | |
8321 | ||
8322 | spa->spa_all_vdev_zaps = new_avz; | |
8323 | } else if (spa->spa_avz_action == AVZ_ACTION_DESTROY) { | |
8324 | zap_cursor_t zc; | |
8325 | zap_attribute_t za; | |
8326 | ||
8327 | /* Walk through the AVZ and destroy all listed ZAPs */ | |
8328 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
8329 | spa->spa_all_vdev_zaps); | |
8330 | zap_cursor_retrieve(&zc, &za) == 0; | |
8331 | zap_cursor_advance(&zc)) { | |
8332 | uint64_t zap = za.za_first_integer; | |
8333 | VERIFY0(zap_destroy(spa->spa_meta_objset, zap, tx)); | |
8334 | } | |
8335 | ||
8336 | zap_cursor_fini(&zc); | |
8337 | ||
8338 | /* Destroy and unlink the AVZ itself */ | |
8339 | VERIFY0(zap_destroy(spa->spa_meta_objset, | |
8340 | spa->spa_all_vdev_zaps, tx)); | |
8341 | VERIFY0(zap_remove(spa->spa_meta_objset, | |
8342 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_VDEV_ZAP_MAP, tx)); | |
8343 | spa->spa_all_vdev_zaps = 0; | |
8344 | } | |
8345 | ||
8346 | if (spa->spa_all_vdev_zaps == 0) { | |
8347 | spa->spa_all_vdev_zaps = zap_create_link(spa->spa_meta_objset, | |
8348 | DMU_OTN_ZAP_METADATA, DMU_POOL_DIRECTORY_OBJECT, | |
8349 | DMU_POOL_VDEV_ZAP_MAP, tx); | |
8350 | } | |
8351 | spa->spa_avz_action = AVZ_ACTION_NONE; | |
8352 | ||
8353 | /* Create ZAPs for vdevs that don't have them. */ | |
8354 | vdev_construct_zaps(spa->spa_root_vdev, tx); | |
8355 | ||
b128c09f BB |
8356 | config = spa_config_generate(spa, spa->spa_root_vdev, |
8357 | dmu_tx_get_txg(tx), B_FALSE); | |
8358 | ||
ea0b2538 GW |
8359 | /* |
8360 | * If we're upgrading the spa version then make sure that | |
8361 | * the config object gets updated with the correct version. | |
8362 | */ | |
8363 | if (spa->spa_ubsync.ub_version < spa->spa_uberblock.ub_version) | |
8364 | fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
8365 | spa->spa_uberblock.ub_version); | |
8366 | ||
b128c09f | 8367 | spa_config_exit(spa, SCL_STATE, FTAG); |
34dc7c2f | 8368 | |
8a5fc748 | 8369 | nvlist_free(spa->spa_config_syncing); |
34dc7c2f BB |
8370 | spa->spa_config_syncing = config; |
8371 | ||
8372 | spa_sync_nvlist(spa, spa->spa_config_object, config, tx); | |
8373 | } | |
8374 | ||
9ae529ec | 8375 | static void |
13fe0198 | 8376 | spa_sync_version(void *arg, dmu_tx_t *tx) |
9ae529ec | 8377 | { |
13fe0198 MA |
8378 | uint64_t *versionp = arg; |
8379 | uint64_t version = *versionp; | |
8380 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
9ae529ec CS |
8381 | |
8382 | /* | |
8383 | * Setting the version is special cased when first creating the pool. | |
8384 | */ | |
8385 | ASSERT(tx->tx_txg != TXG_INITIAL); | |
8386 | ||
8dca0a9a | 8387 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); |
9ae529ec CS |
8388 | ASSERT(version >= spa_version(spa)); |
8389 | ||
8390 | spa->spa_uberblock.ub_version = version; | |
8391 | vdev_config_dirty(spa->spa_root_vdev); | |
74756182 MM |
8392 | spa_history_log_internal(spa, "set", tx, "version=%lld", |
8393 | (longlong_t)version); | |
9ae529ec CS |
8394 | } |
8395 | ||
34dc7c2f BB |
8396 | /* |
8397 | * Set zpool properties. | |
8398 | */ | |
8399 | static void | |
13fe0198 | 8400 | spa_sync_props(void *arg, dmu_tx_t *tx) |
34dc7c2f | 8401 | { |
13fe0198 MA |
8402 | nvlist_t *nvp = arg; |
8403 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
34dc7c2f | 8404 | objset_t *mos = spa->spa_meta_objset; |
9ae529ec | 8405 | nvpair_t *elem = NULL; |
b128c09f BB |
8406 | |
8407 | mutex_enter(&spa->spa_props_lock); | |
34dc7c2f | 8408 | |
34dc7c2f | 8409 | while ((elem = nvlist_next_nvpair(nvp, elem))) { |
9ae529ec CS |
8410 | uint64_t intval; |
8411 | char *strval, *fname; | |
8412 | zpool_prop_t prop; | |
8413 | const char *propname; | |
8414 | zprop_type_t proptype; | |
fa86b5db | 8415 | spa_feature_t fid; |
9ae529ec | 8416 | |
31864e3d BB |
8417 | switch (prop = zpool_name_to_prop(nvpair_name(elem))) { |
8418 | case ZPOOL_PROP_INVAL: | |
9ae529ec CS |
8419 | /* |
8420 | * We checked this earlier in spa_prop_validate(). | |
8421 | */ | |
8422 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
8423 | ||
8424 | fname = strchr(nvpair_name(elem), '@') + 1; | |
fa86b5db | 8425 | VERIFY0(zfeature_lookup_name(fname, &fid)); |
9ae529ec | 8426 | |
fa86b5db | 8427 | spa_feature_enable(spa, fid, tx); |
6f1ffb06 MA |
8428 | spa_history_log_internal(spa, "set", tx, |
8429 | "%s=enabled", nvpair_name(elem)); | |
9ae529ec CS |
8430 | break; |
8431 | ||
34dc7c2f | 8432 | case ZPOOL_PROP_VERSION: |
93cf2076 | 8433 | intval = fnvpair_value_uint64(elem); |
34dc7c2f | 8434 | /* |
4e33ba4c | 8435 | * The version is synced separately before other |
9ae529ec | 8436 | * properties and should be correct by now. |
34dc7c2f | 8437 | */ |
9ae529ec | 8438 | ASSERT3U(spa_version(spa), >=, intval); |
34dc7c2f BB |
8439 | break; |
8440 | ||
8441 | case ZPOOL_PROP_ALTROOT: | |
8442 | /* | |
8443 | * 'altroot' is a non-persistent property. It should | |
8444 | * have been set temporarily at creation or import time. | |
8445 | */ | |
8446 | ASSERT(spa->spa_root != NULL); | |
8447 | break; | |
8448 | ||
572e2857 | 8449 | case ZPOOL_PROP_READONLY: |
34dc7c2f BB |
8450 | case ZPOOL_PROP_CACHEFILE: |
8451 | /* | |
e1cfd73f | 8452 | * 'readonly' and 'cachefile' are also non-persistent |
572e2857 | 8453 | * properties. |
34dc7c2f | 8454 | */ |
34dc7c2f | 8455 | break; |
d96eb2b1 | 8456 | case ZPOOL_PROP_COMMENT: |
93cf2076 | 8457 | strval = fnvpair_value_string(elem); |
d96eb2b1 DM |
8458 | if (spa->spa_comment != NULL) |
8459 | spa_strfree(spa->spa_comment); | |
8460 | spa->spa_comment = spa_strdup(strval); | |
8461 | /* | |
8462 | * We need to dirty the configuration on all the vdevs | |
8463 | * so that their labels get updated. It's unnecessary | |
8464 | * to do this for pool creation since the vdev's | |
4e33ba4c | 8465 | * configuration has already been dirtied. |
d96eb2b1 DM |
8466 | */ |
8467 | if (tx->tx_txg != TXG_INITIAL) | |
8468 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 MA |
8469 | spa_history_log_internal(spa, "set", tx, |
8470 | "%s=%s", nvpair_name(elem), strval); | |
d96eb2b1 | 8471 | break; |
34dc7c2f BB |
8472 | default: |
8473 | /* | |
8474 | * Set pool property values in the poolprops mos object. | |
8475 | */ | |
34dc7c2f | 8476 | if (spa->spa_pool_props_object == 0) { |
9ae529ec CS |
8477 | spa->spa_pool_props_object = |
8478 | zap_create_link(mos, DMU_OT_POOL_PROPS, | |
34dc7c2f | 8479 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, |
9ae529ec | 8480 | tx); |
34dc7c2f | 8481 | } |
34dc7c2f BB |
8482 | |
8483 | /* normalize the property name */ | |
8484 | propname = zpool_prop_to_name(prop); | |
8485 | proptype = zpool_prop_get_type(prop); | |
8486 | ||
8487 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
8488 | ASSERT(proptype == PROP_TYPE_STRING); | |
93cf2076 GW |
8489 | strval = fnvpair_value_string(elem); |
8490 | VERIFY0(zap_update(mos, | |
34dc7c2f | 8491 | spa->spa_pool_props_object, propname, |
93cf2076 | 8492 | 1, strlen(strval) + 1, strval, tx)); |
6f1ffb06 MA |
8493 | spa_history_log_internal(spa, "set", tx, |
8494 | "%s=%s", nvpair_name(elem), strval); | |
34dc7c2f | 8495 | } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { |
93cf2076 | 8496 | intval = fnvpair_value_uint64(elem); |
34dc7c2f BB |
8497 | |
8498 | if (proptype == PROP_TYPE_INDEX) { | |
8499 | const char *unused; | |
93cf2076 GW |
8500 | VERIFY0(zpool_prop_index_to_string( |
8501 | prop, intval, &unused)); | |
34dc7c2f | 8502 | } |
93cf2076 | 8503 | VERIFY0(zap_update(mos, |
34dc7c2f | 8504 | spa->spa_pool_props_object, propname, |
93cf2076 | 8505 | 8, 1, &intval, tx)); |
6f1ffb06 | 8506 | spa_history_log_internal(spa, "set", tx, |
74756182 MM |
8507 | "%s=%lld", nvpair_name(elem), |
8508 | (longlong_t)intval); | |
34dc7c2f BB |
8509 | } else { |
8510 | ASSERT(0); /* not allowed */ | |
8511 | } | |
8512 | ||
8513 | switch (prop) { | |
8514 | case ZPOOL_PROP_DELEGATION: | |
8515 | spa->spa_delegation = intval; | |
8516 | break; | |
8517 | case ZPOOL_PROP_BOOTFS: | |
8518 | spa->spa_bootfs = intval; | |
8519 | break; | |
8520 | case ZPOOL_PROP_FAILUREMODE: | |
8521 | spa->spa_failmode = intval; | |
8522 | break; | |
1b939560 BB |
8523 | case ZPOOL_PROP_AUTOTRIM: |
8524 | spa->spa_autotrim = intval; | |
8525 | spa_async_request(spa, | |
8526 | SPA_ASYNC_AUTOTRIM_RESTART); | |
8527 | break; | |
9babb374 BB |
8528 | case ZPOOL_PROP_AUTOEXPAND: |
8529 | spa->spa_autoexpand = intval; | |
428870ff BB |
8530 | if (tx->tx_txg != TXG_INITIAL) |
8531 | spa_async_request(spa, | |
8532 | SPA_ASYNC_AUTOEXPAND); | |
8533 | break; | |
379ca9cf OF |
8534 | case ZPOOL_PROP_MULTIHOST: |
8535 | spa->spa_multihost = intval; | |
8536 | break; | |
34dc7c2f BB |
8537 | default: |
8538 | break; | |
8539 | } | |
8540 | } | |
8541 | ||
34dc7c2f | 8542 | } |
b128c09f BB |
8543 | |
8544 | mutex_exit(&spa->spa_props_lock); | |
34dc7c2f BB |
8545 | } |
8546 | ||
428870ff BB |
8547 | /* |
8548 | * Perform one-time upgrade on-disk changes. spa_version() does not | |
8549 | * reflect the new version this txg, so there must be no changes this | |
8550 | * txg to anything that the upgrade code depends on after it executes. | |
8551 | * Therefore this must be called after dsl_pool_sync() does the sync | |
8552 | * tasks. | |
8553 | */ | |
8554 | static void | |
8555 | spa_sync_upgrades(spa_t *spa, dmu_tx_t *tx) | |
8556 | { | |
8dc2197b SD |
8557 | if (spa_sync_pass(spa) != 1) |
8558 | return; | |
428870ff | 8559 | |
8dc2197b | 8560 | dsl_pool_t *dp = spa->spa_dsl_pool; |
13fe0198 MA |
8561 | rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG); |
8562 | ||
428870ff BB |
8563 | if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && |
8564 | spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { | |
8565 | dsl_pool_create_origin(dp, tx); | |
8566 | ||
8567 | /* Keeping the origin open increases spa_minref */ | |
8568 | spa->spa_minref += 3; | |
8569 | } | |
8570 | ||
8571 | if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && | |
8572 | spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { | |
8573 | dsl_pool_upgrade_clones(dp, tx); | |
8574 | } | |
8575 | ||
8576 | if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES && | |
8577 | spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) { | |
8578 | dsl_pool_upgrade_dir_clones(dp, tx); | |
8579 | ||
8580 | /* Keeping the freedir open increases spa_minref */ | |
8581 | spa->spa_minref += 3; | |
8582 | } | |
9ae529ec CS |
8583 | |
8584 | if (spa->spa_ubsync.ub_version < SPA_VERSION_FEATURES && | |
8585 | spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
8586 | spa_feature_create_zap_objects(spa, tx); | |
8587 | } | |
62bdd5eb DL |
8588 | |
8589 | /* | |
8590 | * LZ4_COMPRESS feature's behaviour was changed to activate_on_enable | |
8591 | * when possibility to use lz4 compression for metadata was added | |
8592 | * Old pools that have this feature enabled must be upgraded to have | |
8593 | * this feature active | |
8594 | */ | |
8595 | if (spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
8596 | boolean_t lz4_en = spa_feature_is_enabled(spa, | |
8597 | SPA_FEATURE_LZ4_COMPRESS); | |
8598 | boolean_t lz4_ac = spa_feature_is_active(spa, | |
8599 | SPA_FEATURE_LZ4_COMPRESS); | |
8600 | ||
8601 | if (lz4_en && !lz4_ac) | |
8602 | spa_feature_incr(spa, SPA_FEATURE_LZ4_COMPRESS, tx); | |
8603 | } | |
3c67d83a TH |
8604 | |
8605 | /* | |
8606 | * If we haven't written the salt, do so now. Note that the | |
8607 | * feature may not be activated yet, but that's fine since | |
8608 | * the presence of this ZAP entry is backwards compatible. | |
8609 | */ | |
8610 | if (zap_contains(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
8611 | DMU_POOL_CHECKSUM_SALT) == ENOENT) { | |
8612 | VERIFY0(zap_add(spa->spa_meta_objset, | |
8613 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CHECKSUM_SALT, 1, | |
8614 | sizeof (spa->spa_cksum_salt.zcs_bytes), | |
8615 | spa->spa_cksum_salt.zcs_bytes, tx)); | |
8616 | } | |
8617 | ||
13fe0198 | 8618 | rrw_exit(&dp->dp_config_rwlock, FTAG); |
428870ff BB |
8619 | } |
8620 | ||
a1d477c2 MA |
8621 | static void |
8622 | vdev_indirect_state_sync_verify(vdev_t *vd) | |
8623 | { | |
8624 | ASSERTV(vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping); | |
8625 | ASSERTV(vdev_indirect_births_t *vib = vd->vdev_indirect_births); | |
8626 | ||
8627 | if (vd->vdev_ops == &vdev_indirect_ops) { | |
8628 | ASSERT(vim != NULL); | |
8629 | ASSERT(vib != NULL); | |
8630 | } | |
8631 | ||
27f80e85 BB |
8632 | uint64_t obsolete_sm_object = 0; |
8633 | ASSERT0(vdev_obsolete_sm_object(vd, &obsolete_sm_object)); | |
8634 | if (obsolete_sm_object != 0) { | |
a1d477c2 MA |
8635 | ASSERT(vd->vdev_obsolete_sm != NULL); |
8636 | ASSERT(vd->vdev_removing || | |
8637 | vd->vdev_ops == &vdev_indirect_ops); | |
8638 | ASSERT(vdev_indirect_mapping_num_entries(vim) > 0); | |
8639 | ASSERT(vdev_indirect_mapping_bytes_mapped(vim) > 0); | |
27f80e85 | 8640 | ASSERT3U(obsolete_sm_object, ==, |
a1d477c2 MA |
8641 | space_map_object(vd->vdev_obsolete_sm)); |
8642 | ASSERT3U(vdev_indirect_mapping_bytes_mapped(vim), >=, | |
8643 | space_map_allocated(vd->vdev_obsolete_sm)); | |
8644 | } | |
8645 | ASSERT(vd->vdev_obsolete_segments != NULL); | |
8646 | ||
8647 | /* | |
8648 | * Since frees / remaps to an indirect vdev can only | |
8649 | * happen in syncing context, the obsolete segments | |
8650 | * tree must be empty when we start syncing. | |
8651 | */ | |
8652 | ASSERT0(range_tree_space(vd->vdev_obsolete_segments)); | |
8653 | } | |
8654 | ||
34dc7c2f | 8655 | /* |
8dc2197b SD |
8656 | * Set the top-level vdev's max queue depth. Evaluate each top-level's |
8657 | * async write queue depth in case it changed. The max queue depth will | |
8658 | * not change in the middle of syncing out this txg. | |
34dc7c2f | 8659 | */ |
8dc2197b SD |
8660 | static void |
8661 | spa_sync_adjust_vdev_max_queue_depth(spa_t *spa) | |
34dc7c2f | 8662 | { |
8dc2197b SD |
8663 | ASSERT(spa_writeable(spa)); |
8664 | ||
34dc7c2f | 8665 | vdev_t *rvd = spa->spa_root_vdev; |
3dfb57a3 DB |
8666 | uint32_t max_queue_depth = zfs_vdev_async_write_max_active * |
8667 | zfs_vdev_queue_depth_pct / 100; | |
8dc2197b SD |
8668 | metaslab_class_t *normal = spa_normal_class(spa); |
8669 | metaslab_class_t *special = spa_special_class(spa); | |
8670 | metaslab_class_t *dedup = spa_dedup_class(spa); | |
34dc7c2f | 8671 | |
492f64e9 | 8672 | uint64_t slots_per_allocator = 0; |
1c27024e | 8673 | for (int c = 0; c < rvd->vdev_children; c++) { |
3dfb57a3 | 8674 | vdev_t *tvd = rvd->vdev_child[c]; |
cc99f275 | 8675 | |
8dc2197b | 8676 | metaslab_group_t *mg = tvd->vdev_mg; |
cc99f275 DB |
8677 | if (mg == NULL || !metaslab_group_initialized(mg)) |
8678 | continue; | |
3dfb57a3 | 8679 | |
8dc2197b | 8680 | metaslab_class_t *mc = mg->mg_class; |
cc99f275 | 8681 | if (mc != normal && mc != special && mc != dedup) |
3dfb57a3 DB |
8682 | continue; |
8683 | ||
8684 | /* | |
8685 | * It is safe to do a lock-free check here because only async | |
8686 | * allocations look at mg_max_alloc_queue_depth, and async | |
8687 | * allocations all happen from spa_sync(). | |
8688 | */ | |
492f64e9 | 8689 | for (int i = 0; i < spa->spa_alloc_count; i++) |
424fd7c3 TS |
8690 | ASSERT0(zfs_refcount_count( |
8691 | &(mg->mg_alloc_queue_depth[i]))); | |
3dfb57a3 | 8692 | mg->mg_max_alloc_queue_depth = max_queue_depth; |
492f64e9 PD |
8693 | |
8694 | for (int i = 0; i < spa->spa_alloc_count; i++) { | |
8695 | mg->mg_cur_max_alloc_queue_depth[i] = | |
8696 | zfs_vdev_def_queue_depth; | |
8697 | } | |
8698 | slots_per_allocator += zfs_vdev_def_queue_depth; | |
3dfb57a3 | 8699 | } |
cc99f275 | 8700 | |
492f64e9 | 8701 | for (int i = 0; i < spa->spa_alloc_count; i++) { |
424fd7c3 TS |
8702 | ASSERT0(zfs_refcount_count(&normal->mc_alloc_slots[i])); |
8703 | ASSERT0(zfs_refcount_count(&special->mc_alloc_slots[i])); | |
8704 | ASSERT0(zfs_refcount_count(&dedup->mc_alloc_slots[i])); | |
cc99f275 DB |
8705 | normal->mc_alloc_max_slots[i] = slots_per_allocator; |
8706 | special->mc_alloc_max_slots[i] = slots_per_allocator; | |
8707 | dedup->mc_alloc_max_slots[i] = slots_per_allocator; | |
8708 | } | |
8709 | normal->mc_alloc_throttle_enabled = zio_dva_throttle_enabled; | |
8710 | special->mc_alloc_throttle_enabled = zio_dva_throttle_enabled; | |
8711 | dedup->mc_alloc_throttle_enabled = zio_dva_throttle_enabled; | |
8dc2197b SD |
8712 | } |
8713 | ||
8714 | static void | |
8715 | spa_sync_condense_indirect(spa_t *spa, dmu_tx_t *tx) | |
8716 | { | |
8717 | ASSERT(spa_writeable(spa)); | |
3dfb57a3 | 8718 | |
8dc2197b | 8719 | vdev_t *rvd = spa->spa_root_vdev; |
a1d477c2 MA |
8720 | for (int c = 0; c < rvd->vdev_children; c++) { |
8721 | vdev_t *vd = rvd->vdev_child[c]; | |
8722 | vdev_indirect_state_sync_verify(vd); | |
8723 | ||
8724 | if (vdev_indirect_should_condense(vd)) { | |
8725 | spa_condense_indirect_start_sync(vd, tx); | |
8726 | break; | |
8727 | } | |
8728 | } | |
8dc2197b SD |
8729 | } |
8730 | ||
8731 | static void | |
8732 | spa_sync_iterate_to_convergence(spa_t *spa, dmu_tx_t *tx) | |
8733 | { | |
8734 | objset_t *mos = spa->spa_meta_objset; | |
8735 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
8736 | uint64_t txg = tx->tx_txg; | |
8737 | bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK]; | |
a1d477c2 | 8738 | |
34dc7c2f | 8739 | do { |
428870ff | 8740 | int pass = ++spa->spa_sync_pass; |
34dc7c2f BB |
8741 | |
8742 | spa_sync_config_object(spa, tx); | |
8743 | spa_sync_aux_dev(spa, &spa->spa_spares, tx, | |
8744 | ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
8745 | spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
8746 | ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
8747 | spa_errlog_sync(spa, txg); | |
8748 | dsl_pool_sync(dp, txg); | |
8749 | ||
93e28d66 SD |
8750 | if (pass < zfs_sync_pass_deferred_free || |
8751 | spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) { | |
8752 | /* | |
8753 | * If the log space map feature is active we don't | |
8754 | * care about deferred frees and the deferred bpobj | |
8755 | * as the log space map should effectively have the | |
8756 | * same results (i.e. appending only to one object). | |
8757 | */ | |
e8b96c60 | 8758 | spa_sync_frees(spa, free_bpl, tx); |
428870ff | 8759 | } else { |
905edb40 MA |
8760 | /* |
8761 | * We can not defer frees in pass 1, because | |
8762 | * we sync the deferred frees later in pass 1. | |
8763 | */ | |
8764 | ASSERT3U(pass, >, 1); | |
37f03da8 | 8765 | bplist_iterate(free_bpl, bpobj_enqueue_alloc_cb, |
e8b96c60 | 8766 | &spa->spa_deferred_bpobj, tx); |
34dc7c2f BB |
8767 | } |
8768 | ||
428870ff BB |
8769 | ddt_sync(spa, txg); |
8770 | dsl_scan_sync(dp, tx); | |
8dc2197b SD |
8771 | svr_sync(spa, tx); |
8772 | spa_sync_upgrades(spa, tx); | |
34dc7c2f | 8773 | |
93e28d66 SD |
8774 | spa_flush_metaslabs(spa, tx); |
8775 | ||
8dc2197b | 8776 | vdev_t *vd = NULL; |
a1d477c2 MA |
8777 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) |
8778 | != NULL) | |
428870ff BB |
8779 | vdev_sync(vd, txg); |
8780 | ||
8dc2197b SD |
8781 | /* |
8782 | * Note: We need to check if the MOS is dirty because we could | |
8783 | * have marked the MOS dirty without updating the uberblock | |
8784 | * (e.g. if we have sync tasks but no dirty user data). We need | |
8785 | * to check the uberblock's rootbp because it is updated if we | |
8786 | * have synced out dirty data (though in this case the MOS will | |
8787 | * most likely also be dirty due to second order effects, we | |
8788 | * don't want to rely on that here). | |
8789 | */ | |
8790 | if (pass == 1 && | |
8791 | spa->spa_uberblock.ub_rootbp.blk_birth < txg && | |
8792 | !dmu_objset_is_dirty(mos, txg)) { | |
905edb40 | 8793 | /* |
8dc2197b SD |
8794 | * Nothing changed on the first pass, therefore this |
8795 | * TXG is a no-op. Avoid syncing deferred frees, so | |
8796 | * that we can keep this TXG as a no-op. | |
905edb40 | 8797 | */ |
8dc2197b SD |
8798 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); |
8799 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
8800 | ASSERT(txg_list_empty(&dp->dp_sync_tasks, txg)); | |
8801 | ASSERT(txg_list_empty(&dp->dp_early_sync_tasks, txg)); | |
8802 | break; | |
905edb40 | 8803 | } |
34dc7c2f | 8804 | |
8dc2197b | 8805 | spa_sync_deferred_frees(spa, tx); |
428870ff | 8806 | } while (dmu_objset_is_dirty(mos, txg)); |
8dc2197b | 8807 | } |
34dc7c2f | 8808 | |
8dc2197b SD |
8809 | /* |
8810 | * Rewrite the vdev configuration (which includes the uberblock) to | |
8811 | * commit the transaction group. | |
8812 | * | |
8813 | * If there are no dirty vdevs, we sync the uberblock to a few random | |
8814 | * top-level vdevs that are known to be visible in the config cache | |
8815 | * (see spa_vdev_add() for a complete description). If there *are* dirty | |
8816 | * vdevs, sync the uberblock to all vdevs. | |
8817 | */ | |
8818 | static void | |
8819 | spa_sync_rewrite_vdev_config(spa_t *spa, dmu_tx_t *tx) | |
8820 | { | |
8821 | vdev_t *rvd = spa->spa_root_vdev; | |
8822 | uint64_t txg = tx->tx_txg; | |
a1d477c2 | 8823 | |
b128c09f | 8824 | for (;;) { |
8dc2197b SD |
8825 | int error = 0; |
8826 | ||
b128c09f BB |
8827 | /* |
8828 | * We hold SCL_STATE to prevent vdev open/close/etc. | |
8829 | * while we're attempting to write the vdev labels. | |
8830 | */ | |
8831 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
8832 | ||
8833 | if (list_is_empty(&spa->spa_config_dirty_list)) { | |
d2734cce | 8834 | vdev_t *svd[SPA_SYNC_MIN_VDEVS] = { NULL }; |
b128c09f BB |
8835 | int svdcount = 0; |
8836 | int children = rvd->vdev_children; | |
8837 | int c0 = spa_get_random(children); | |
b128c09f | 8838 | |
1c27024e | 8839 | for (int c = 0; c < children; c++) { |
8dc2197b SD |
8840 | vdev_t *vd = |
8841 | rvd->vdev_child[(c0 + c) % children]; | |
d2734cce SD |
8842 | |
8843 | /* Stop when revisiting the first vdev */ | |
8844 | if (c > 0 && svd[0] == vd) | |
8845 | break; | |
8846 | ||
8dc2197b SD |
8847 | if (vd->vdev_ms_array == 0 || |
8848 | vd->vdev_islog || | |
a1d477c2 | 8849 | !vdev_is_concrete(vd)) |
b128c09f | 8850 | continue; |
d2734cce | 8851 | |
b128c09f | 8852 | svd[svdcount++] = vd; |
6cb8e530 | 8853 | if (svdcount == SPA_SYNC_MIN_VDEVS) |
b128c09f BB |
8854 | break; |
8855 | } | |
b6fcb792 | 8856 | error = vdev_config_sync(svd, svdcount, txg); |
b128c09f BB |
8857 | } else { |
8858 | error = vdev_config_sync(rvd->vdev_child, | |
b6fcb792 | 8859 | rvd->vdev_children, txg); |
34dc7c2f | 8860 | } |
34dc7c2f | 8861 | |
3bc7e0fb GW |
8862 | if (error == 0) |
8863 | spa->spa_last_synced_guid = rvd->vdev_guid; | |
8864 | ||
b128c09f BB |
8865 | spa_config_exit(spa, SCL_STATE, FTAG); |
8866 | ||
8867 | if (error == 0) | |
8868 | break; | |
cec3a0a1 | 8869 | zio_suspend(spa, NULL, ZIO_SUSPEND_IOERR); |
b128c09f BB |
8870 | zio_resume_wait(spa); |
8871 | } | |
8dc2197b SD |
8872 | } |
8873 | ||
8874 | /* | |
8875 | * Sync the specified transaction group. New blocks may be dirtied as | |
8876 | * part of the process, so we iterate until it converges. | |
8877 | */ | |
8878 | void | |
8879 | spa_sync(spa_t *spa, uint64_t txg) | |
8880 | { | |
8881 | vdev_t *vd = NULL; | |
8882 | ||
8883 | VERIFY(spa_writeable(spa)); | |
8884 | ||
8885 | /* | |
8886 | * Wait for i/os issued in open context that need to complete | |
8887 | * before this txg syncs. | |
8888 | */ | |
8889 | (void) zio_wait(spa->spa_txg_zio[txg & TXG_MASK]); | |
8890 | spa->spa_txg_zio[txg & TXG_MASK] = zio_root(spa, NULL, NULL, | |
8891 | ZIO_FLAG_CANFAIL); | |
8892 | ||
8893 | /* | |
8894 | * Lock out configuration changes. | |
8895 | */ | |
8896 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
8897 | ||
8898 | spa->spa_syncing_txg = txg; | |
8899 | spa->spa_sync_pass = 0; | |
8900 | ||
8901 | for (int i = 0; i < spa->spa_alloc_count; i++) { | |
8902 | mutex_enter(&spa->spa_alloc_locks[i]); | |
8903 | VERIFY0(avl_numnodes(&spa->spa_alloc_trees[i])); | |
8904 | mutex_exit(&spa->spa_alloc_locks[i]); | |
8905 | } | |
8906 | ||
8907 | /* | |
8908 | * If there are any pending vdev state changes, convert them | |
8909 | * into config changes that go out with this transaction group. | |
8910 | */ | |
8911 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
8912 | while (list_head(&spa->spa_state_dirty_list) != NULL) { | |
8913 | /* | |
8914 | * We need the write lock here because, for aux vdevs, | |
8915 | * calling vdev_config_dirty() modifies sav_config. | |
8916 | * This is ugly and will become unnecessary when we | |
8917 | * eliminate the aux vdev wart by integrating all vdevs | |
8918 | * into the root vdev tree. | |
8919 | */ | |
8920 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
8921 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); | |
8922 | while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { | |
8923 | vdev_state_clean(vd); | |
8924 | vdev_config_dirty(vd); | |
8925 | } | |
8926 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
8927 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
8928 | } | |
8929 | spa_config_exit(spa, SCL_STATE, FTAG); | |
8930 | ||
8931 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
8932 | dmu_tx_t *tx = dmu_tx_create_assigned(dp, txg); | |
8933 | ||
8934 | spa->spa_sync_starttime = gethrtime(); | |
8935 | taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid); | |
8936 | spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq, | |
8937 | spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() + | |
8938 | NSEC_TO_TICK(spa->spa_deadman_synctime)); | |
8939 | ||
8940 | /* | |
8941 | * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, | |
8942 | * set spa_deflate if we have no raid-z vdevs. | |
8943 | */ | |
8944 | if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && | |
8945 | spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
8946 | vdev_t *rvd = spa->spa_root_vdev; | |
8947 | ||
8948 | int i; | |
8949 | for (i = 0; i < rvd->vdev_children; i++) { | |
8950 | vd = rvd->vdev_child[i]; | |
8951 | if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
8952 | break; | |
8953 | } | |
8954 | if (i == rvd->vdev_children) { | |
8955 | spa->spa_deflate = TRUE; | |
8956 | VERIFY0(zap_add(spa->spa_meta_objset, | |
8957 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
8958 | sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
8959 | } | |
8960 | } | |
8961 | ||
8962 | spa_sync_adjust_vdev_max_queue_depth(spa); | |
8963 | ||
8964 | spa_sync_condense_indirect(spa, tx); | |
8965 | ||
8966 | spa_sync_iterate_to_convergence(spa, tx); | |
8967 | ||
8968 | #ifdef ZFS_DEBUG | |
8969 | if (!list_is_empty(&spa->spa_config_dirty_list)) { | |
8970 | /* | |
8971 | * Make sure that the number of ZAPs for all the vdevs matches | |
8972 | * the number of ZAPs in the per-vdev ZAP list. This only gets | |
8973 | * called if the config is dirty; otherwise there may be | |
8974 | * outstanding AVZ operations that weren't completed in | |
8975 | * spa_sync_config_object. | |
8976 | */ | |
8977 | uint64_t all_vdev_zap_entry_count; | |
8978 | ASSERT0(zap_count(spa->spa_meta_objset, | |
8979 | spa->spa_all_vdev_zaps, &all_vdev_zap_entry_count)); | |
8980 | ASSERT3U(vdev_count_verify_zaps(spa->spa_root_vdev), ==, | |
8981 | all_vdev_zap_entry_count); | |
8982 | } | |
8983 | #endif | |
8984 | ||
8985 | if (spa->spa_vdev_removal != NULL) { | |
8986 | ASSERT0(spa->spa_vdev_removal->svr_bytes_done[txg & TXG_MASK]); | |
8987 | } | |
8988 | ||
8989 | spa_sync_rewrite_vdev_config(spa, tx); | |
34dc7c2f BB |
8990 | dmu_tx_commit(tx); |
8991 | ||
57ddcda1 | 8992 | taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid); |
cc92e9d0 GW |
8993 | spa->spa_deadman_tqid = 0; |
8994 | ||
34dc7c2f BB |
8995 | /* |
8996 | * Clear the dirty config list. | |
8997 | */ | |
b128c09f | 8998 | while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) |
34dc7c2f BB |
8999 | vdev_config_clean(vd); |
9000 | ||
9001 | /* | |
9002 | * Now that the new config has synced transactionally, | |
9003 | * let it become visible to the config cache. | |
9004 | */ | |
9005 | if (spa->spa_config_syncing != NULL) { | |
9006 | spa_config_set(spa, spa->spa_config_syncing); | |
9007 | spa->spa_config_txg = txg; | |
9008 | spa->spa_config_syncing = NULL; | |
9009 | } | |
9010 | ||
428870ff | 9011 | dsl_pool_sync_done(dp, txg); |
34dc7c2f | 9012 | |
492f64e9 PD |
9013 | for (int i = 0; i < spa->spa_alloc_count; i++) { |
9014 | mutex_enter(&spa->spa_alloc_locks[i]); | |
9015 | VERIFY0(avl_numnodes(&spa->spa_alloc_trees[i])); | |
9016 | mutex_exit(&spa->spa_alloc_locks[i]); | |
9017 | } | |
3dfb57a3 | 9018 | |
34dc7c2f BB |
9019 | /* |
9020 | * Update usable space statistics. | |
9021 | */ | |
619f0976 GW |
9022 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) |
9023 | != NULL) | |
34dc7c2f | 9024 | vdev_sync_done(vd, txg); |
f09fda50 PD |
9025 | |
9026 | metaslab_class_evict_old(spa->spa_normal_class, txg); | |
9027 | metaslab_class_evict_old(spa->spa_log_class, txg); | |
9028 | ||
93e28d66 | 9029 | spa_sync_close_syncing_log_sm(spa); |
34dc7c2f | 9030 | |
428870ff BB |
9031 | spa_update_dspace(spa); |
9032 | ||
34dc7c2f BB |
9033 | /* |
9034 | * It had better be the case that we didn't dirty anything | |
9035 | * since vdev_config_sync(). | |
9036 | */ | |
9037 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
9038 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
9039 | ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
428870ff | 9040 | |
d2734cce SD |
9041 | while (zfs_pause_spa_sync) |
9042 | delay(1); | |
9043 | ||
428870ff | 9044 | spa->spa_sync_pass = 0; |
34dc7c2f | 9045 | |
55922e73 GW |
9046 | /* |
9047 | * Update the last synced uberblock here. We want to do this at | |
9048 | * the end of spa_sync() so that consumers of spa_last_synced_txg() | |
9049 | * will be guaranteed that all the processing associated with | |
9050 | * that txg has been completed. | |
9051 | */ | |
9052 | spa->spa_ubsync = spa->spa_uberblock; | |
b128c09f | 9053 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f | 9054 | |
428870ff BB |
9055 | spa_handle_ignored_writes(spa); |
9056 | ||
34dc7c2f BB |
9057 | /* |
9058 | * If any async tasks have been requested, kick them off. | |
9059 | */ | |
9060 | spa_async_dispatch(spa); | |
9061 | } | |
9062 | ||
9063 | /* | |
9064 | * Sync all pools. We don't want to hold the namespace lock across these | |
9065 | * operations, so we take a reference on the spa_t and drop the lock during the | |
9066 | * sync. | |
9067 | */ | |
9068 | void | |
9069 | spa_sync_allpools(void) | |
9070 | { | |
9071 | spa_t *spa = NULL; | |
9072 | mutex_enter(&spa_namespace_lock); | |
9073 | while ((spa = spa_next(spa)) != NULL) { | |
572e2857 BB |
9074 | if (spa_state(spa) != POOL_STATE_ACTIVE || |
9075 | !spa_writeable(spa) || spa_suspended(spa)) | |
34dc7c2f BB |
9076 | continue; |
9077 | spa_open_ref(spa, FTAG); | |
9078 | mutex_exit(&spa_namespace_lock); | |
9079 | txg_wait_synced(spa_get_dsl(spa), 0); | |
9080 | mutex_enter(&spa_namespace_lock); | |
9081 | spa_close(spa, FTAG); | |
9082 | } | |
9083 | mutex_exit(&spa_namespace_lock); | |
9084 | } | |
9085 | ||
9086 | /* | |
9087 | * ========================================================================== | |
9088 | * Miscellaneous routines | |
9089 | * ========================================================================== | |
9090 | */ | |
9091 | ||
9092 | /* | |
9093 | * Remove all pools in the system. | |
9094 | */ | |
9095 | void | |
9096 | spa_evict_all(void) | |
9097 | { | |
9098 | spa_t *spa; | |
9099 | ||
9100 | /* | |
9101 | * Remove all cached state. All pools should be closed now, | |
9102 | * so every spa in the AVL tree should be unreferenced. | |
9103 | */ | |
9104 | mutex_enter(&spa_namespace_lock); | |
9105 | while ((spa = spa_next(NULL)) != NULL) { | |
9106 | /* | |
9107 | * Stop async tasks. The async thread may need to detach | |
9108 | * a device that's been replaced, which requires grabbing | |
9109 | * spa_namespace_lock, so we must drop it here. | |
9110 | */ | |
9111 | spa_open_ref(spa, FTAG); | |
9112 | mutex_exit(&spa_namespace_lock); | |
9113 | spa_async_suspend(spa); | |
9114 | mutex_enter(&spa_namespace_lock); | |
34dc7c2f BB |
9115 | spa_close(spa, FTAG); |
9116 | ||
9117 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
9118 | spa_unload(spa); | |
9119 | spa_deactivate(spa); | |
9120 | } | |
9121 | spa_remove(spa); | |
9122 | } | |
9123 | mutex_exit(&spa_namespace_lock); | |
9124 | } | |
9125 | ||
9126 | vdev_t * | |
9babb374 | 9127 | spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux) |
34dc7c2f | 9128 | { |
b128c09f BB |
9129 | vdev_t *vd; |
9130 | int i; | |
9131 | ||
9132 | if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) | |
9133 | return (vd); | |
9134 | ||
9babb374 | 9135 | if (aux) { |
b128c09f BB |
9136 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
9137 | vd = spa->spa_l2cache.sav_vdevs[i]; | |
9babb374 BB |
9138 | if (vd->vdev_guid == guid) |
9139 | return (vd); | |
9140 | } | |
9141 | ||
9142 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
9143 | vd = spa->spa_spares.sav_vdevs[i]; | |
b128c09f BB |
9144 | if (vd->vdev_guid == guid) |
9145 | return (vd); | |
9146 | } | |
9147 | } | |
9148 | ||
9149 | return (NULL); | |
34dc7c2f BB |
9150 | } |
9151 | ||
9152 | void | |
9153 | spa_upgrade(spa_t *spa, uint64_t version) | |
9154 | { | |
572e2857 BB |
9155 | ASSERT(spa_writeable(spa)); |
9156 | ||
b128c09f | 9157 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
9158 | |
9159 | /* | |
9160 | * This should only be called for a non-faulted pool, and since a | |
9161 | * future version would result in an unopenable pool, this shouldn't be | |
9162 | * possible. | |
9163 | */ | |
8dca0a9a | 9164 | ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version)); |
9b67f605 | 9165 | ASSERT3U(version, >=, spa->spa_uberblock.ub_version); |
34dc7c2f BB |
9166 | |
9167 | spa->spa_uberblock.ub_version = version; | |
9168 | vdev_config_dirty(spa->spa_root_vdev); | |
9169 | ||
b128c09f | 9170 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
9171 | |
9172 | txg_wait_synced(spa_get_dsl(spa), 0); | |
9173 | } | |
9174 | ||
9175 | boolean_t | |
9176 | spa_has_spare(spa_t *spa, uint64_t guid) | |
9177 | { | |
9178 | int i; | |
9179 | uint64_t spareguid; | |
9180 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
9181 | ||
9182 | for (i = 0; i < sav->sav_count; i++) | |
9183 | if (sav->sav_vdevs[i]->vdev_guid == guid) | |
9184 | return (B_TRUE); | |
9185 | ||
9186 | for (i = 0; i < sav->sav_npending; i++) { | |
9187 | if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
9188 | &spareguid) == 0 && spareguid == guid) | |
9189 | return (B_TRUE); | |
9190 | } | |
9191 | ||
9192 | return (B_FALSE); | |
9193 | } | |
9194 | ||
b128c09f BB |
9195 | /* |
9196 | * Check if a pool has an active shared spare device. | |
9197 | * Note: reference count of an active spare is 2, as a spare and as a replace | |
9198 | */ | |
9199 | static boolean_t | |
9200 | spa_has_active_shared_spare(spa_t *spa) | |
9201 | { | |
9202 | int i, refcnt; | |
9203 | uint64_t pool; | |
9204 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
9205 | ||
9206 | for (i = 0; i < sav->sav_count; i++) { | |
9207 | if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, | |
9208 | &refcnt) && pool != 0ULL && pool == spa_guid(spa) && | |
9209 | refcnt > 2) | |
9210 | return (B_TRUE); | |
9211 | } | |
9212 | ||
9213 | return (B_FALSE); | |
9214 | } | |
9215 | ||
93e28d66 SD |
9216 | uint64_t |
9217 | spa_total_metaslabs(spa_t *spa) | |
9218 | { | |
9219 | vdev_t *rvd = spa->spa_root_vdev; | |
9220 | ||
9221 | uint64_t m = 0; | |
9222 | for (uint64_t c = 0; c < rvd->vdev_children; c++) { | |
9223 | vdev_t *vd = rvd->vdev_child[c]; | |
9224 | if (!vdev_is_concrete(vd)) | |
9225 | continue; | |
9226 | m += vd->vdev_ms_count; | |
9227 | } | |
9228 | return (m); | |
9229 | } | |
9230 | ||
a1d477c2 | 9231 | sysevent_t * |
12fa0466 DE |
9232 | spa_event_create(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, const char *name) |
9233 | { | |
9234 | sysevent_t *ev = NULL; | |
9235 | #ifdef _KERNEL | |
9236 | nvlist_t *resource; | |
9237 | ||
9238 | resource = zfs_event_create(spa, vd, FM_SYSEVENT_CLASS, name, hist_nvl); | |
9239 | if (resource) { | |
9240 | ev = kmem_alloc(sizeof (sysevent_t), KM_SLEEP); | |
9241 | ev->resource = resource; | |
9242 | } | |
9243 | #endif | |
9244 | return (ev); | |
9245 | } | |
9246 | ||
a1d477c2 | 9247 | void |
12fa0466 DE |
9248 | spa_event_post(sysevent_t *ev) |
9249 | { | |
9250 | #ifdef _KERNEL | |
9251 | if (ev) { | |
9252 | zfs_zevent_post(ev->resource, NULL, zfs_zevent_post_cb); | |
9253 | kmem_free(ev, sizeof (*ev)); | |
9254 | } | |
9255 | #endif | |
9256 | } | |
9257 | ||
34dc7c2f | 9258 | /* |
fb390aaf HR |
9259 | * Post a zevent corresponding to the given sysevent. The 'name' must be one |
9260 | * of the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
34dc7c2f BB |
9261 | * filled in from the spa and (optionally) the vdev. This doesn't do anything |
9262 | * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
9263 | * or zdb as real changes. | |
9264 | */ | |
9265 | void | |
12fa0466 | 9266 | spa_event_notify(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, const char *name) |
34dc7c2f | 9267 | { |
12fa0466 | 9268 | spa_event_post(spa_event_create(spa, vd, hist_nvl, name)); |
34dc7c2f | 9269 | } |
c28b2279 | 9270 | |
c28b2279 BB |
9271 | /* state manipulation functions */ |
9272 | EXPORT_SYMBOL(spa_open); | |
9273 | EXPORT_SYMBOL(spa_open_rewind); | |
9274 | EXPORT_SYMBOL(spa_get_stats); | |
9275 | EXPORT_SYMBOL(spa_create); | |
c28b2279 BB |
9276 | EXPORT_SYMBOL(spa_import); |
9277 | EXPORT_SYMBOL(spa_tryimport); | |
9278 | EXPORT_SYMBOL(spa_destroy); | |
9279 | EXPORT_SYMBOL(spa_export); | |
9280 | EXPORT_SYMBOL(spa_reset); | |
9281 | EXPORT_SYMBOL(spa_async_request); | |
9282 | EXPORT_SYMBOL(spa_async_suspend); | |
9283 | EXPORT_SYMBOL(spa_async_resume); | |
9284 | EXPORT_SYMBOL(spa_inject_addref); | |
9285 | EXPORT_SYMBOL(spa_inject_delref); | |
9286 | EXPORT_SYMBOL(spa_scan_stat_init); | |
9287 | EXPORT_SYMBOL(spa_scan_get_stats); | |
9288 | ||
e1cfd73f | 9289 | /* device manipulation */ |
c28b2279 BB |
9290 | EXPORT_SYMBOL(spa_vdev_add); |
9291 | EXPORT_SYMBOL(spa_vdev_attach); | |
9292 | EXPORT_SYMBOL(spa_vdev_detach); | |
c28b2279 BB |
9293 | EXPORT_SYMBOL(spa_vdev_setpath); |
9294 | EXPORT_SYMBOL(spa_vdev_setfru); | |
9295 | EXPORT_SYMBOL(spa_vdev_split_mirror); | |
9296 | ||
9297 | /* spare statech is global across all pools) */ | |
9298 | EXPORT_SYMBOL(spa_spare_add); | |
9299 | EXPORT_SYMBOL(spa_spare_remove); | |
9300 | EXPORT_SYMBOL(spa_spare_exists); | |
9301 | EXPORT_SYMBOL(spa_spare_activate); | |
9302 | ||
9303 | /* L2ARC statech is global across all pools) */ | |
9304 | EXPORT_SYMBOL(spa_l2cache_add); | |
9305 | EXPORT_SYMBOL(spa_l2cache_remove); | |
9306 | EXPORT_SYMBOL(spa_l2cache_exists); | |
9307 | EXPORT_SYMBOL(spa_l2cache_activate); | |
9308 | EXPORT_SYMBOL(spa_l2cache_drop); | |
9309 | ||
9310 | /* scanning */ | |
9311 | EXPORT_SYMBOL(spa_scan); | |
9312 | EXPORT_SYMBOL(spa_scan_stop); | |
9313 | ||
9314 | /* spa syncing */ | |
9315 | EXPORT_SYMBOL(spa_sync); /* only for DMU use */ | |
9316 | EXPORT_SYMBOL(spa_sync_allpools); | |
9317 | ||
9318 | /* properties */ | |
9319 | EXPORT_SYMBOL(spa_prop_set); | |
9320 | EXPORT_SYMBOL(spa_prop_get); | |
9321 | EXPORT_SYMBOL(spa_prop_clear_bootfs); | |
9322 | ||
9323 | /* asynchronous event notification */ | |
9324 | EXPORT_SYMBOL(spa_event_notify); | |
dea377c0 | 9325 | |
c8242a96 | 9326 | /* BEGIN CSTYLED */ |
03fdcb9a MM |
9327 | ZFS_MODULE_PARAM(zfs_spa, spa_, load_verify_shift, INT, ZMOD_RW, |
9328 | "log2(fraction of arc that can be used by inflight I/Os when " | |
9329 | "verifying pool during import"); | |
dea377c0 | 9330 | |
03fdcb9a | 9331 | ZFS_MODULE_PARAM(zfs_spa, spa_, load_verify_metadata, INT, ZMOD_RW, |
dea377c0 MA |
9332 | "Set to traverse metadata on pool import"); |
9333 | ||
03fdcb9a | 9334 | ZFS_MODULE_PARAM(zfs_spa, spa_, load_verify_data, INT, ZMOD_RW, |
dea377c0 | 9335 | "Set to traverse data on pool import"); |
dcb6bed1 | 9336 | |
03fdcb9a | 9337 | ZFS_MODULE_PARAM(zfs_spa, spa_, load_print_vdev_tree, INT, ZMOD_RW, |
6cb8e530 PZ |
9338 | "Print vdev tree to zfs_dbgmsg during pool import"); |
9339 | ||
03fdcb9a | 9340 | ZFS_MODULE_PARAM(zfs_zio, zio_, taskq_batch_pct, UINT, ZMOD_RD, |
dcb6bed1 D |
9341 | "Percentage of CPUs to run an IO worker thread"); |
9342 | ||
03fdcb9a MM |
9343 | ZFS_MODULE_PARAM(zfs, zfs_, max_missing_tvds, ULONG, ZMOD_RW, |
9344 | "Allow importing pool with up to this number of missing top-level " | |
9345 | "vdevs (in read-only mode)"); | |
6cb8e530 | 9346 | |
03fdcb9a | 9347 | ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, zthr_pause, INT, ZMOD_RW, |
37f03da8 | 9348 | "Set the livelist condense zthr to pause"); |
03fdcb9a MM |
9349 | |
9350 | ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, sync_pause, INT, ZMOD_RW, | |
37f03da8 SH |
9351 | "Set the livelist condense synctask to pause"); |
9352 | ||
03fdcb9a | 9353 | ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, sync_cancel, INT, ZMOD_RW, |
37f03da8 | 9354 | "Whether livelist condensing was canceled in the synctask"); |
03fdcb9a MM |
9355 | |
9356 | ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, zthr_cancel, INT, ZMOD_RW, | |
37f03da8 SH |
9357 | "Whether livelist condensing was canceled in the zthr function"); |
9358 | ||
03fdcb9a MM |
9359 | ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, new_alloc, INT, ZMOD_RW, |
9360 | "Whether extra ALLOC blkptrs were added to a livelist entry while it " | |
9361 | "was being condensed"); | |
37f03da8 | 9362 | /* END CSTYLED */ |