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Commit | Line | Data |
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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. |
4747a7d3 | 24 | * Copyright (c) 2011, 2017 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> | |
c28b2279 | 59 | #include <sys/vdev_disk.h> |
34dc7c2f | 60 | #include <sys/metaslab.h> |
428870ff | 61 | #include <sys/metaslab_impl.h> |
379ca9cf | 62 | #include <sys/mmp.h> |
34dc7c2f BB |
63 | #include <sys/uberblock_impl.h> |
64 | #include <sys/txg.h> | |
65 | #include <sys/avl.h> | |
a1d477c2 | 66 | #include <sys/bpobj.h> |
34dc7c2f BB |
67 | #include <sys/dmu_traverse.h> |
68 | #include <sys/dmu_objset.h> | |
69 | #include <sys/unique.h> | |
70 | #include <sys/dsl_pool.h> | |
71 | #include <sys/dsl_dataset.h> | |
72 | #include <sys/dsl_dir.h> | |
73 | #include <sys/dsl_prop.h> | |
74 | #include <sys/dsl_synctask.h> | |
75 | #include <sys/fs/zfs.h> | |
76 | #include <sys/arc.h> | |
77 | #include <sys/callb.h> | |
78 | #include <sys/systeminfo.h> | |
34dc7c2f | 79 | #include <sys/spa_boot.h> |
9babb374 | 80 | #include <sys/zfs_ioctl.h> |
428870ff | 81 | #include <sys/dsl_scan.h> |
9ae529ec | 82 | #include <sys/zfeature.h> |
13fe0198 | 83 | #include <sys/dsl_destroy.h> |
526af785 | 84 | #include <sys/zvol.h> |
34dc7c2f | 85 | |
d164b209 | 86 | #ifdef _KERNEL |
12fa0466 DE |
87 | #include <sys/fm/protocol.h> |
88 | #include <sys/fm/util.h> | |
428870ff | 89 | #include <sys/callb.h> |
d164b209 BB |
90 | #include <sys/zone.h> |
91 | #endif /* _KERNEL */ | |
92 | ||
34dc7c2f BB |
93 | #include "zfs_prop.h" |
94 | #include "zfs_comutil.h" | |
95 | ||
e6cfd633 WA |
96 | /* |
97 | * The interval, in seconds, at which failed configuration cache file writes | |
98 | * should be retried. | |
99 | */ | |
a1d477c2 | 100 | int zfs_ccw_retry_interval = 300; |
e6cfd633 | 101 | |
428870ff | 102 | typedef enum zti_modes { |
7ef5e54e | 103 | ZTI_MODE_FIXED, /* value is # of threads (min 1) */ |
7ef5e54e AL |
104 | ZTI_MODE_BATCH, /* cpu-intensive; value is ignored */ |
105 | ZTI_MODE_NULL, /* don't create a taskq */ | |
106 | ZTI_NMODES | |
428870ff | 107 | } zti_modes_t; |
34dc7c2f | 108 | |
7ef5e54e AL |
109 | #define ZTI_P(n, q) { ZTI_MODE_FIXED, (n), (q) } |
110 | #define ZTI_PCT(n) { ZTI_MODE_ONLINE_PERCENT, (n), 1 } | |
111 | #define ZTI_BATCH { ZTI_MODE_BATCH, 0, 1 } | |
112 | #define ZTI_NULL { ZTI_MODE_NULL, 0, 0 } | |
9babb374 | 113 | |
7ef5e54e AL |
114 | #define ZTI_N(n) ZTI_P(n, 1) |
115 | #define ZTI_ONE ZTI_N(1) | |
9babb374 BB |
116 | |
117 | typedef struct zio_taskq_info { | |
7ef5e54e | 118 | zti_modes_t zti_mode; |
428870ff | 119 | uint_t zti_value; |
7ef5e54e | 120 | uint_t zti_count; |
9babb374 BB |
121 | } zio_taskq_info_t; |
122 | ||
123 | static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = { | |
451041db | 124 | "iss", "iss_h", "int", "int_h" |
9babb374 BB |
125 | }; |
126 | ||
428870ff | 127 | /* |
7ef5e54e AL |
128 | * This table defines the taskq settings for each ZFS I/O type. When |
129 | * initializing a pool, we use this table to create an appropriately sized | |
130 | * taskq. Some operations are low volume and therefore have a small, static | |
131 | * number of threads assigned to their taskqs using the ZTI_N(#) or ZTI_ONE | |
132 | * macros. Other operations process a large amount of data; the ZTI_BATCH | |
133 | * macro causes us to create a taskq oriented for throughput. Some operations | |
134 | * are so high frequency and short-lived that the taskq itself can become a a | |
135 | * point of lock contention. The ZTI_P(#, #) macro indicates that we need an | |
136 | * additional degree of parallelism specified by the number of threads per- | |
137 | * taskq and the number of taskqs; when dispatching an event in this case, the | |
138 | * particular taskq is chosen at random. | |
139 | * | |
140 | * The different taskq priorities are to handle the different contexts (issue | |
141 | * and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that | |
142 | * need to be handled with minimum delay. | |
428870ff BB |
143 | */ |
144 | const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = { | |
145 | /* ISSUE ISSUE_HIGH INTR INTR_HIGH */ | |
7ef5e54e | 146 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */ |
aa9af22c BB |
147 | { ZTI_N(8), ZTI_NULL, ZTI_P(12, 8), ZTI_NULL }, /* READ */ |
148 | { ZTI_BATCH, ZTI_N(5), ZTI_P(12, 8), ZTI_N(5) }, /* WRITE */ | |
149 | { ZTI_P(12, 8), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* FREE */ | |
7ef5e54e AL |
150 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* CLAIM */ |
151 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* IOCTL */ | |
9babb374 BB |
152 | }; |
153 | ||
13fe0198 MA |
154 | static void spa_sync_version(void *arg, dmu_tx_t *tx); |
155 | static void spa_sync_props(void *arg, dmu_tx_t *tx); | |
b128c09f | 156 | static boolean_t spa_has_active_shared_spare(spa_t *spa); |
d2734cce | 157 | static int spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport); |
572e2857 | 158 | static void spa_vdev_resilver_done(spa_t *spa); |
428870ff | 159 | |
e8b96c60 | 160 | uint_t zio_taskq_batch_pct = 75; /* 1 thread per cpu in pset */ |
428870ff BB |
161 | boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */ |
162 | uint_t zio_taskq_basedc = 80; /* base duty cycle */ | |
163 | ||
164 | boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ | |
165 | ||
afd2f7b7 PZ |
166 | /* |
167 | * Report any spa_load_verify errors found, but do not fail spa_load. | |
168 | * This is used by zdb to analyze non-idle pools. | |
169 | */ | |
170 | boolean_t spa_load_verify_dryrun = B_FALSE; | |
171 | ||
428870ff BB |
172 | /* |
173 | * This (illegal) pool name is used when temporarily importing a spa_t in order | |
174 | * to get the vdev stats associated with the imported devices. | |
175 | */ | |
176 | #define TRYIMPORT_NAME "$import" | |
34dc7c2f | 177 | |
6cb8e530 PZ |
178 | /* |
179 | * For debugging purposes: print out vdev tree during pool import. | |
180 | */ | |
181 | int spa_load_print_vdev_tree = B_FALSE; | |
182 | ||
183 | /* | |
184 | * A non-zero value for zfs_max_missing_tvds means that we allow importing | |
185 | * pools with missing top-level vdevs. This is strictly intended for advanced | |
186 | * pool recovery cases since missing data is almost inevitable. Pools with | |
187 | * missing devices can only be imported read-only for safety reasons, and their | |
188 | * fail-mode will be automatically set to "continue". | |
189 | * | |
190 | * With 1 missing vdev we should be able to import the pool and mount all | |
191 | * datasets. User data that was not modified after the missing device has been | |
192 | * added should be recoverable. This means that snapshots created prior to the | |
193 | * addition of that device should be completely intact. | |
194 | * | |
195 | * With 2 missing vdevs, some datasets may fail to mount since there are | |
196 | * dataset statistics that are stored as regular metadata. Some data might be | |
197 | * recoverable if those vdevs were added recently. | |
198 | * | |
199 | * With 3 or more missing vdevs, the pool is severely damaged and MOS entries | |
200 | * may be missing entirely. Chances of data recovery are very low. Note that | |
201 | * there are also risks of performing an inadvertent rewind as we might be | |
202 | * missing all the vdevs with the latest uberblocks. | |
203 | */ | |
204 | unsigned long zfs_max_missing_tvds = 0; | |
205 | ||
206 | /* | |
207 | * The parameters below are similar to zfs_max_missing_tvds but are only | |
208 | * intended for a preliminary open of the pool with an untrusted config which | |
209 | * might be incomplete or out-dated. | |
210 | * | |
211 | * We are more tolerant for pools opened from a cachefile since we could have | |
212 | * an out-dated cachefile where a device removal was not registered. | |
213 | * We could have set the limit arbitrarily high but in the case where devices | |
214 | * are really missing we would want to return the proper error codes; we chose | |
215 | * SPA_DVAS_PER_BP - 1 so that some copies of the MOS would still be available | |
216 | * and we get a chance to retrieve the trusted config. | |
217 | */ | |
218 | uint64_t zfs_max_missing_tvds_cachefile = SPA_DVAS_PER_BP - 1; | |
d2734cce | 219 | |
6cb8e530 PZ |
220 | /* |
221 | * In the case where config was assembled by scanning device paths (/dev/dsks | |
222 | * by default) we are less tolerant since all the existing devices should have | |
223 | * been detected and we want spa_load to return the right error codes. | |
224 | */ | |
225 | uint64_t zfs_max_missing_tvds_scan = 0; | |
226 | ||
d2734cce SD |
227 | /* |
228 | * Debugging aid that pauses spa_sync() towards the end. | |
229 | */ | |
230 | boolean_t zfs_pause_spa_sync = B_FALSE; | |
231 | ||
34dc7c2f BB |
232 | /* |
233 | * ========================================================================== | |
234 | * SPA properties routines | |
235 | * ========================================================================== | |
236 | */ | |
237 | ||
238 | /* | |
239 | * Add a (source=src, propname=propval) list to an nvlist. | |
240 | */ | |
241 | static void | |
242 | spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, | |
243 | uint64_t intval, zprop_source_t src) | |
244 | { | |
245 | const char *propname = zpool_prop_to_name(prop); | |
246 | nvlist_t *propval; | |
247 | ||
79c76d5b | 248 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
249 | VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); |
250 | ||
251 | if (strval != NULL) | |
252 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); | |
253 | else | |
254 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); | |
255 | ||
256 | VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); | |
257 | nvlist_free(propval); | |
258 | } | |
259 | ||
260 | /* | |
261 | * Get property values from the spa configuration. | |
262 | */ | |
263 | static void | |
264 | spa_prop_get_config(spa_t *spa, nvlist_t **nvp) | |
265 | { | |
1bd201e7 | 266 | vdev_t *rvd = spa->spa_root_vdev; |
9ae529ec | 267 | dsl_pool_t *pool = spa->spa_dsl_pool; |
f3a7f661 | 268 | uint64_t size, alloc, cap, version; |
82ab6848 | 269 | const zprop_source_t src = ZPROP_SRC_NONE; |
b128c09f | 270 | spa_config_dirent_t *dp; |
f3a7f661 | 271 | metaslab_class_t *mc = spa_normal_class(spa); |
b128c09f BB |
272 | |
273 | ASSERT(MUTEX_HELD(&spa->spa_props_lock)); | |
34dc7c2f | 274 | |
1bd201e7 | 275 | if (rvd != NULL) { |
cc99f275 DB |
276 | alloc = metaslab_class_get_alloc(mc); |
277 | alloc += metaslab_class_get_alloc(spa_special_class(spa)); | |
278 | alloc += metaslab_class_get_alloc(spa_dedup_class(spa)); | |
279 | ||
280 | size = metaslab_class_get_space(mc); | |
281 | size += metaslab_class_get_space(spa_special_class(spa)); | |
282 | size += metaslab_class_get_space(spa_dedup_class(spa)); | |
283 | ||
d164b209 BB |
284 | spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); |
285 | spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); | |
428870ff BB |
286 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src); |
287 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL, | |
288 | size - alloc, src); | |
d2734cce SD |
289 | spa_prop_add_list(*nvp, ZPOOL_PROP_CHECKPOINT, NULL, |
290 | spa->spa_checkpoint_info.sci_dspace, src); | |
1bd201e7 | 291 | |
f3a7f661 GW |
292 | spa_prop_add_list(*nvp, ZPOOL_PROP_FRAGMENTATION, NULL, |
293 | metaslab_class_fragmentation(mc), src); | |
294 | spa_prop_add_list(*nvp, ZPOOL_PROP_EXPANDSZ, NULL, | |
295 | metaslab_class_expandable_space(mc), src); | |
572e2857 BB |
296 | spa_prop_add_list(*nvp, ZPOOL_PROP_READONLY, NULL, |
297 | (spa_mode(spa) == FREAD), src); | |
d164b209 | 298 | |
428870ff | 299 | cap = (size == 0) ? 0 : (alloc * 100 / size); |
d164b209 BB |
300 | spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); |
301 | ||
428870ff BB |
302 | spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL, |
303 | ddt_get_pool_dedup_ratio(spa), src); | |
304 | ||
d164b209 | 305 | spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, |
1bd201e7 | 306 | rvd->vdev_state, src); |
d164b209 BB |
307 | |
308 | version = spa_version(spa); | |
82ab6848 HM |
309 | if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) { |
310 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, | |
311 | version, ZPROP_SRC_DEFAULT); | |
312 | } else { | |
313 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, | |
314 | version, ZPROP_SRC_LOCAL); | |
315 | } | |
a448a255 SD |
316 | spa_prop_add_list(*nvp, ZPOOL_PROP_LOAD_GUID, |
317 | NULL, spa_load_guid(spa), src); | |
d164b209 | 318 | } |
34dc7c2f | 319 | |
9ae529ec | 320 | if (pool != NULL) { |
9ae529ec CS |
321 | /* |
322 | * The $FREE directory was introduced in SPA_VERSION_DEADLISTS, | |
323 | * when opening pools before this version freedir will be NULL. | |
324 | */ | |
fbeddd60 | 325 | if (pool->dp_free_dir != NULL) { |
9ae529ec | 326 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, NULL, |
d683ddbb JG |
327 | dsl_dir_phys(pool->dp_free_dir)->dd_used_bytes, |
328 | src); | |
9ae529ec CS |
329 | } else { |
330 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, | |
331 | NULL, 0, src); | |
332 | } | |
fbeddd60 MA |
333 | |
334 | if (pool->dp_leak_dir != NULL) { | |
335 | spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, NULL, | |
d683ddbb JG |
336 | dsl_dir_phys(pool->dp_leak_dir)->dd_used_bytes, |
337 | src); | |
fbeddd60 MA |
338 | } else { |
339 | spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, | |
340 | NULL, 0, src); | |
341 | } | |
9ae529ec CS |
342 | } |
343 | ||
34dc7c2f | 344 | spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); |
34dc7c2f | 345 | |
d96eb2b1 DM |
346 | if (spa->spa_comment != NULL) { |
347 | spa_prop_add_list(*nvp, ZPOOL_PROP_COMMENT, spa->spa_comment, | |
348 | 0, ZPROP_SRC_LOCAL); | |
349 | } | |
350 | ||
34dc7c2f BB |
351 | if (spa->spa_root != NULL) |
352 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, | |
353 | 0, ZPROP_SRC_LOCAL); | |
354 | ||
f1512ee6 MA |
355 | if (spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_BLOCKS)) { |
356 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXBLOCKSIZE, NULL, | |
357 | MIN(zfs_max_recordsize, SPA_MAXBLOCKSIZE), ZPROP_SRC_NONE); | |
358 | } else { | |
359 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXBLOCKSIZE, NULL, | |
360 | SPA_OLD_MAXBLOCKSIZE, ZPROP_SRC_NONE); | |
361 | } | |
362 | ||
50c957f7 NB |
363 | if (spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_DNODE)) { |
364 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXDNODESIZE, NULL, | |
365 | DNODE_MAX_SIZE, ZPROP_SRC_NONE); | |
366 | } else { | |
367 | spa_prop_add_list(*nvp, ZPOOL_PROP_MAXDNODESIZE, NULL, | |
368 | DNODE_MIN_SIZE, ZPROP_SRC_NONE); | |
369 | } | |
370 | ||
b128c09f BB |
371 | if ((dp = list_head(&spa->spa_config_list)) != NULL) { |
372 | if (dp->scd_path == NULL) { | |
34dc7c2f | 373 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f BB |
374 | "none", 0, ZPROP_SRC_LOCAL); |
375 | } else if (strcmp(dp->scd_path, spa_config_path) != 0) { | |
34dc7c2f | 376 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f | 377 | dp->scd_path, 0, ZPROP_SRC_LOCAL); |
34dc7c2f BB |
378 | } |
379 | } | |
380 | } | |
381 | ||
382 | /* | |
383 | * Get zpool property values. | |
384 | */ | |
385 | int | |
386 | spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
387 | { | |
428870ff | 388 | objset_t *mos = spa->spa_meta_objset; |
34dc7c2f BB |
389 | zap_cursor_t zc; |
390 | zap_attribute_t za; | |
34dc7c2f BB |
391 | int err; |
392 | ||
79c76d5b | 393 | err = nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP); |
c28b2279 | 394 | if (err) |
d1d7e268 | 395 | return (err); |
34dc7c2f | 396 | |
b128c09f BB |
397 | mutex_enter(&spa->spa_props_lock); |
398 | ||
34dc7c2f BB |
399 | /* |
400 | * Get properties from the spa config. | |
401 | */ | |
402 | spa_prop_get_config(spa, nvp); | |
403 | ||
34dc7c2f | 404 | /* If no pool property object, no more prop to get. */ |
428870ff | 405 | if (mos == NULL || spa->spa_pool_props_object == 0) { |
34dc7c2f | 406 | mutex_exit(&spa->spa_props_lock); |
c28b2279 | 407 | goto out; |
34dc7c2f BB |
408 | } |
409 | ||
410 | /* | |
411 | * Get properties from the MOS pool property object. | |
412 | */ | |
413 | for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
414 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
415 | zap_cursor_advance(&zc)) { | |
416 | uint64_t intval = 0; | |
417 | char *strval = NULL; | |
418 | zprop_source_t src = ZPROP_SRC_DEFAULT; | |
419 | zpool_prop_t prop; | |
420 | ||
31864e3d | 421 | if ((prop = zpool_name_to_prop(za.za_name)) == ZPOOL_PROP_INVAL) |
34dc7c2f BB |
422 | continue; |
423 | ||
424 | switch (za.za_integer_length) { | |
425 | case 8: | |
426 | /* integer property */ | |
427 | if (za.za_first_integer != | |
428 | zpool_prop_default_numeric(prop)) | |
429 | src = ZPROP_SRC_LOCAL; | |
430 | ||
431 | if (prop == ZPOOL_PROP_BOOTFS) { | |
432 | dsl_pool_t *dp; | |
433 | dsl_dataset_t *ds = NULL; | |
434 | ||
435 | dp = spa_get_dsl(spa); | |
13fe0198 | 436 | dsl_pool_config_enter(dp, FTAG); |
c65aa5b2 BB |
437 | if ((err = dsl_dataset_hold_obj(dp, |
438 | za.za_first_integer, FTAG, &ds))) { | |
13fe0198 | 439 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f BB |
440 | break; |
441 | } | |
442 | ||
eca7b760 | 443 | strval = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, |
79c76d5b | 444 | KM_SLEEP); |
34dc7c2f | 445 | dsl_dataset_name(ds, strval); |
b128c09f | 446 | dsl_dataset_rele(ds, FTAG); |
13fe0198 | 447 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f BB |
448 | } else { |
449 | strval = NULL; | |
450 | intval = za.za_first_integer; | |
451 | } | |
452 | ||
453 | spa_prop_add_list(*nvp, prop, strval, intval, src); | |
454 | ||
455 | if (strval != NULL) | |
eca7b760 | 456 | kmem_free(strval, ZFS_MAX_DATASET_NAME_LEN); |
34dc7c2f BB |
457 | |
458 | break; | |
459 | ||
460 | case 1: | |
461 | /* string property */ | |
79c76d5b | 462 | strval = kmem_alloc(za.za_num_integers, KM_SLEEP); |
34dc7c2f BB |
463 | err = zap_lookup(mos, spa->spa_pool_props_object, |
464 | za.za_name, 1, za.za_num_integers, strval); | |
465 | if (err) { | |
466 | kmem_free(strval, za.za_num_integers); | |
467 | break; | |
468 | } | |
469 | spa_prop_add_list(*nvp, prop, strval, 0, src); | |
470 | kmem_free(strval, za.za_num_integers); | |
471 | break; | |
472 | ||
473 | default: | |
474 | break; | |
475 | } | |
476 | } | |
477 | zap_cursor_fini(&zc); | |
478 | mutex_exit(&spa->spa_props_lock); | |
479 | out: | |
480 | if (err && err != ENOENT) { | |
481 | nvlist_free(*nvp); | |
482 | *nvp = NULL; | |
483 | return (err); | |
484 | } | |
485 | ||
486 | return (0); | |
487 | } | |
488 | ||
489 | /* | |
490 | * Validate the given pool properties nvlist and modify the list | |
491 | * for the property values to be set. | |
492 | */ | |
493 | static int | |
494 | spa_prop_validate(spa_t *spa, nvlist_t *props) | |
495 | { | |
496 | nvpair_t *elem; | |
497 | int error = 0, reset_bootfs = 0; | |
d4ed6673 | 498 | uint64_t objnum = 0; |
9ae529ec | 499 | boolean_t has_feature = B_FALSE; |
34dc7c2f BB |
500 | |
501 | elem = NULL; | |
502 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
34dc7c2f | 503 | uint64_t intval; |
9ae529ec CS |
504 | char *strval, *slash, *check, *fname; |
505 | const char *propname = nvpair_name(elem); | |
506 | zpool_prop_t prop = zpool_name_to_prop(propname); | |
507 | ||
31864e3d BB |
508 | switch (prop) { |
509 | case ZPOOL_PROP_INVAL: | |
9ae529ec | 510 | if (!zpool_prop_feature(propname)) { |
2e528b49 | 511 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
512 | break; |
513 | } | |
514 | ||
515 | /* | |
516 | * Sanitize the input. | |
517 | */ | |
518 | if (nvpair_type(elem) != DATA_TYPE_UINT64) { | |
2e528b49 | 519 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
520 | break; |
521 | } | |
522 | ||
523 | if (nvpair_value_uint64(elem, &intval) != 0) { | |
2e528b49 | 524 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
525 | break; |
526 | } | |
34dc7c2f | 527 | |
9ae529ec | 528 | if (intval != 0) { |
2e528b49 | 529 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
530 | break; |
531 | } | |
34dc7c2f | 532 | |
9ae529ec CS |
533 | fname = strchr(propname, '@') + 1; |
534 | if (zfeature_lookup_name(fname, NULL) != 0) { | |
2e528b49 | 535 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
536 | break; |
537 | } | |
538 | ||
539 | has_feature = B_TRUE; | |
540 | break; | |
34dc7c2f | 541 | |
34dc7c2f BB |
542 | case ZPOOL_PROP_VERSION: |
543 | error = nvpair_value_uint64(elem, &intval); | |
544 | if (!error && | |
9ae529ec CS |
545 | (intval < spa_version(spa) || |
546 | intval > SPA_VERSION_BEFORE_FEATURES || | |
547 | has_feature)) | |
2e528b49 | 548 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
549 | break; |
550 | ||
551 | case ZPOOL_PROP_DELEGATION: | |
552 | case ZPOOL_PROP_AUTOREPLACE: | |
b128c09f | 553 | case ZPOOL_PROP_LISTSNAPS: |
9babb374 | 554 | case ZPOOL_PROP_AUTOEXPAND: |
34dc7c2f BB |
555 | error = nvpair_value_uint64(elem, &intval); |
556 | if (!error && intval > 1) | |
2e528b49 | 557 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
558 | break; |
559 | ||
379ca9cf OF |
560 | case ZPOOL_PROP_MULTIHOST: |
561 | error = nvpair_value_uint64(elem, &intval); | |
562 | if (!error && intval > 1) | |
563 | error = SET_ERROR(EINVAL); | |
564 | ||
565 | if (!error && !spa_get_hostid()) | |
566 | error = SET_ERROR(ENOTSUP); | |
567 | ||
568 | break; | |
569 | ||
34dc7c2f | 570 | case ZPOOL_PROP_BOOTFS: |
9babb374 BB |
571 | /* |
572 | * If the pool version is less than SPA_VERSION_BOOTFS, | |
573 | * or the pool is still being created (version == 0), | |
574 | * the bootfs property cannot be set. | |
575 | */ | |
34dc7c2f | 576 | if (spa_version(spa) < SPA_VERSION_BOOTFS) { |
2e528b49 | 577 | error = SET_ERROR(ENOTSUP); |
34dc7c2f BB |
578 | break; |
579 | } | |
580 | ||
581 | /* | |
b128c09f | 582 | * Make sure the vdev config is bootable |
34dc7c2f | 583 | */ |
b128c09f | 584 | if (!vdev_is_bootable(spa->spa_root_vdev)) { |
2e528b49 | 585 | error = SET_ERROR(ENOTSUP); |
34dc7c2f BB |
586 | break; |
587 | } | |
588 | ||
589 | reset_bootfs = 1; | |
590 | ||
591 | error = nvpair_value_string(elem, &strval); | |
592 | ||
593 | if (!error) { | |
9ae529ec | 594 | objset_t *os; |
f1512ee6 | 595 | uint64_t propval; |
b128c09f | 596 | |
34dc7c2f BB |
597 | if (strval == NULL || strval[0] == '\0') { |
598 | objnum = zpool_prop_default_numeric( | |
599 | ZPOOL_PROP_BOOTFS); | |
600 | break; | |
601 | } | |
602 | ||
d1d7e268 MK |
603 | error = dmu_objset_hold(strval, FTAG, &os); |
604 | if (error) | |
34dc7c2f | 605 | break; |
b128c09f | 606 | |
f1512ee6 MA |
607 | /* |
608 | * Must be ZPL, and its property settings | |
609 | * must be supported by GRUB (compression | |
50c957f7 NB |
610 | * is not gzip, and large blocks or large |
611 | * dnodes are not used). | |
f1512ee6 | 612 | */ |
428870ff BB |
613 | |
614 | if (dmu_objset_type(os) != DMU_OST_ZFS) { | |
2e528b49 | 615 | error = SET_ERROR(ENOTSUP); |
13fe0198 MA |
616 | } else if ((error = |
617 | dsl_prop_get_int_ds(dmu_objset_ds(os), | |
b128c09f | 618 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), |
f1512ee6 MA |
619 | &propval)) == 0 && |
620 | !BOOTFS_COMPRESS_VALID(propval)) { | |
621 | error = SET_ERROR(ENOTSUP); | |
50c957f7 NB |
622 | } else if ((error = |
623 | dsl_prop_get_int_ds(dmu_objset_ds(os), | |
624 | zfs_prop_to_name(ZFS_PROP_DNODESIZE), | |
625 | &propval)) == 0 && | |
626 | propval != ZFS_DNSIZE_LEGACY) { | |
627 | error = SET_ERROR(ENOTSUP); | |
b128c09f BB |
628 | } else { |
629 | objnum = dmu_objset_id(os); | |
630 | } | |
428870ff | 631 | dmu_objset_rele(os, FTAG); |
34dc7c2f BB |
632 | } |
633 | break; | |
b128c09f | 634 | |
34dc7c2f BB |
635 | case ZPOOL_PROP_FAILUREMODE: |
636 | error = nvpair_value_uint64(elem, &intval); | |
3bfd95d5 | 637 | if (!error && intval > ZIO_FAILURE_MODE_PANIC) |
2e528b49 | 638 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
639 | |
640 | /* | |
641 | * This is a special case which only occurs when | |
642 | * the pool has completely failed. This allows | |
643 | * the user to change the in-core failmode property | |
644 | * without syncing it out to disk (I/Os might | |
645 | * currently be blocked). We do this by returning | |
646 | * EIO to the caller (spa_prop_set) to trick it | |
647 | * into thinking we encountered a property validation | |
648 | * error. | |
649 | */ | |
b128c09f | 650 | if (!error && spa_suspended(spa)) { |
34dc7c2f | 651 | spa->spa_failmode = intval; |
2e528b49 | 652 | error = SET_ERROR(EIO); |
34dc7c2f BB |
653 | } |
654 | break; | |
655 | ||
656 | case ZPOOL_PROP_CACHEFILE: | |
657 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
658 | break; | |
659 | ||
660 | if (strval[0] == '\0') | |
661 | break; | |
662 | ||
663 | if (strcmp(strval, "none") == 0) | |
664 | break; | |
665 | ||
666 | if (strval[0] != '/') { | |
2e528b49 | 667 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
668 | break; |
669 | } | |
670 | ||
671 | slash = strrchr(strval, '/'); | |
672 | ASSERT(slash != NULL); | |
673 | ||
674 | if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
675 | strcmp(slash, "/..") == 0) | |
2e528b49 | 676 | error = SET_ERROR(EINVAL); |
34dc7c2f | 677 | break; |
428870ff | 678 | |
d96eb2b1 DM |
679 | case ZPOOL_PROP_COMMENT: |
680 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
681 | break; | |
682 | for (check = strval; *check != '\0'; check++) { | |
683 | if (!isprint(*check)) { | |
2e528b49 | 684 | error = SET_ERROR(EINVAL); |
d96eb2b1 DM |
685 | break; |
686 | } | |
d96eb2b1 DM |
687 | } |
688 | if (strlen(strval) > ZPROP_MAX_COMMENT) | |
2e528b49 | 689 | error = SET_ERROR(E2BIG); |
d96eb2b1 DM |
690 | break; |
691 | ||
428870ff BB |
692 | case ZPOOL_PROP_DEDUPDITTO: |
693 | if (spa_version(spa) < SPA_VERSION_DEDUP) | |
2e528b49 | 694 | error = SET_ERROR(ENOTSUP); |
428870ff BB |
695 | else |
696 | error = nvpair_value_uint64(elem, &intval); | |
697 | if (error == 0 && | |
698 | intval != 0 && intval < ZIO_DEDUPDITTO_MIN) | |
2e528b49 | 699 | error = SET_ERROR(EINVAL); |
428870ff | 700 | break; |
e75c13c3 BB |
701 | |
702 | default: | |
703 | break; | |
34dc7c2f BB |
704 | } |
705 | ||
706 | if (error) | |
707 | break; | |
708 | } | |
709 | ||
710 | if (!error && reset_bootfs) { | |
711 | error = nvlist_remove(props, | |
712 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
713 | ||
714 | if (!error) { | |
715 | error = nvlist_add_uint64(props, | |
716 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
717 | } | |
718 | } | |
719 | ||
720 | return (error); | |
721 | } | |
722 | ||
d164b209 BB |
723 | void |
724 | spa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync) | |
725 | { | |
726 | char *cachefile; | |
727 | spa_config_dirent_t *dp; | |
728 | ||
729 | if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), | |
730 | &cachefile) != 0) | |
731 | return; | |
732 | ||
733 | dp = kmem_alloc(sizeof (spa_config_dirent_t), | |
79c76d5b | 734 | KM_SLEEP); |
d164b209 BB |
735 | |
736 | if (cachefile[0] == '\0') | |
737 | dp->scd_path = spa_strdup(spa_config_path); | |
738 | else if (strcmp(cachefile, "none") == 0) | |
739 | dp->scd_path = NULL; | |
740 | else | |
741 | dp->scd_path = spa_strdup(cachefile); | |
742 | ||
743 | list_insert_head(&spa->spa_config_list, dp); | |
744 | if (need_sync) | |
745 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
746 | } | |
747 | ||
34dc7c2f BB |
748 | int |
749 | spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
750 | { | |
751 | int error; | |
9ae529ec | 752 | nvpair_t *elem = NULL; |
d164b209 | 753 | boolean_t need_sync = B_FALSE; |
34dc7c2f BB |
754 | |
755 | if ((error = spa_prop_validate(spa, nvp)) != 0) | |
756 | return (error); | |
757 | ||
d164b209 | 758 | while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) { |
9ae529ec | 759 | zpool_prop_t prop = zpool_name_to_prop(nvpair_name(elem)); |
d164b209 | 760 | |
572e2857 BB |
761 | if (prop == ZPOOL_PROP_CACHEFILE || |
762 | prop == ZPOOL_PROP_ALTROOT || | |
763 | prop == ZPOOL_PROP_READONLY) | |
d164b209 BB |
764 | continue; |
765 | ||
31864e3d | 766 | if (prop == ZPOOL_PROP_VERSION || prop == ZPOOL_PROP_INVAL) { |
9ae529ec CS |
767 | uint64_t ver; |
768 | ||
769 | if (prop == ZPOOL_PROP_VERSION) { | |
770 | VERIFY(nvpair_value_uint64(elem, &ver) == 0); | |
771 | } else { | |
772 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
773 | ver = SPA_VERSION_FEATURES; | |
774 | need_sync = B_TRUE; | |
775 | } | |
776 | ||
777 | /* Save time if the version is already set. */ | |
778 | if (ver == spa_version(spa)) | |
779 | continue; | |
780 | ||
781 | /* | |
782 | * In addition to the pool directory object, we might | |
783 | * create the pool properties object, the features for | |
784 | * read object, the features for write object, or the | |
785 | * feature descriptions object. | |
786 | */ | |
13fe0198 | 787 | error = dsl_sync_task(spa->spa_name, NULL, |
3d45fdd6 MA |
788 | spa_sync_version, &ver, |
789 | 6, ZFS_SPACE_CHECK_RESERVED); | |
9ae529ec CS |
790 | if (error) |
791 | return (error); | |
792 | continue; | |
793 | } | |
794 | ||
d164b209 BB |
795 | need_sync = B_TRUE; |
796 | break; | |
797 | } | |
798 | ||
9ae529ec | 799 | if (need_sync) { |
13fe0198 | 800 | return (dsl_sync_task(spa->spa_name, NULL, spa_sync_props, |
3d45fdd6 | 801 | nvp, 6, ZFS_SPACE_CHECK_RESERVED)); |
9ae529ec CS |
802 | } |
803 | ||
804 | return (0); | |
34dc7c2f BB |
805 | } |
806 | ||
807 | /* | |
808 | * If the bootfs property value is dsobj, clear it. | |
809 | */ | |
810 | void | |
811 | spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
812 | { | |
813 | if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
814 | VERIFY(zap_remove(spa->spa_meta_objset, | |
815 | spa->spa_pool_props_object, | |
816 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
817 | spa->spa_bootfs = 0; | |
818 | } | |
819 | } | |
820 | ||
3bc7e0fb GW |
821 | /*ARGSUSED*/ |
822 | static int | |
13fe0198 | 823 | spa_change_guid_check(void *arg, dmu_tx_t *tx) |
3bc7e0fb | 824 | { |
1c27024e | 825 | ASSERTV(uint64_t *newguid = arg); |
13fe0198 | 826 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; |
3bc7e0fb GW |
827 | vdev_t *rvd = spa->spa_root_vdev; |
828 | uint64_t vdev_state; | |
3bc7e0fb | 829 | |
d2734cce SD |
830 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { |
831 | int error = (spa_has_checkpoint(spa)) ? | |
832 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
833 | return (SET_ERROR(error)); | |
834 | } | |
835 | ||
3bc7e0fb GW |
836 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
837 | vdev_state = rvd->vdev_state; | |
838 | spa_config_exit(spa, SCL_STATE, FTAG); | |
839 | ||
840 | if (vdev_state != VDEV_STATE_HEALTHY) | |
2e528b49 | 841 | return (SET_ERROR(ENXIO)); |
3bc7e0fb GW |
842 | |
843 | ASSERT3U(spa_guid(spa), !=, *newguid); | |
844 | ||
845 | return (0); | |
846 | } | |
847 | ||
848 | static void | |
13fe0198 | 849 | spa_change_guid_sync(void *arg, dmu_tx_t *tx) |
3bc7e0fb | 850 | { |
13fe0198 MA |
851 | uint64_t *newguid = arg; |
852 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
3bc7e0fb GW |
853 | uint64_t oldguid; |
854 | vdev_t *rvd = spa->spa_root_vdev; | |
855 | ||
856 | oldguid = spa_guid(spa); | |
857 | ||
858 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
859 | rvd->vdev_guid = *newguid; | |
860 | rvd->vdev_guid_sum += (*newguid - oldguid); | |
861 | vdev_config_dirty(rvd); | |
862 | spa_config_exit(spa, SCL_STATE, FTAG); | |
863 | ||
6f1ffb06 MA |
864 | spa_history_log_internal(spa, "guid change", tx, "old=%llu new=%llu", |
865 | oldguid, *newguid); | |
3bc7e0fb GW |
866 | } |
867 | ||
3541dc6d GA |
868 | /* |
869 | * Change the GUID for the pool. This is done so that we can later | |
870 | * re-import a pool built from a clone of our own vdevs. We will modify | |
871 | * the root vdev's guid, our own pool guid, and then mark all of our | |
872 | * vdevs dirty. Note that we must make sure that all our vdevs are | |
873 | * online when we do this, or else any vdevs that weren't present | |
874 | * would be orphaned from our pool. We are also going to issue a | |
875 | * sysevent to update any watchers. | |
876 | */ | |
877 | int | |
878 | spa_change_guid(spa_t *spa) | |
879 | { | |
3bc7e0fb GW |
880 | int error; |
881 | uint64_t guid; | |
3541dc6d | 882 | |
621dd7bb | 883 | mutex_enter(&spa->spa_vdev_top_lock); |
3bc7e0fb GW |
884 | mutex_enter(&spa_namespace_lock); |
885 | guid = spa_generate_guid(NULL); | |
3541dc6d | 886 | |
13fe0198 | 887 | error = dsl_sync_task(spa->spa_name, spa_change_guid_check, |
3d45fdd6 | 888 | spa_change_guid_sync, &guid, 5, ZFS_SPACE_CHECK_RESERVED); |
3541dc6d | 889 | |
3bc7e0fb | 890 | if (error == 0) { |
a1d477c2 | 891 | spa_write_cachefile(spa, B_FALSE, B_TRUE); |
12fa0466 | 892 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_REGUID); |
3bc7e0fb | 893 | } |
3541dc6d | 894 | |
3bc7e0fb | 895 | mutex_exit(&spa_namespace_lock); |
621dd7bb | 896 | mutex_exit(&spa->spa_vdev_top_lock); |
3541dc6d | 897 | |
3bc7e0fb | 898 | return (error); |
3541dc6d GA |
899 | } |
900 | ||
34dc7c2f BB |
901 | /* |
902 | * ========================================================================== | |
903 | * SPA state manipulation (open/create/destroy/import/export) | |
904 | * ========================================================================== | |
905 | */ | |
906 | ||
907 | static int | |
908 | spa_error_entry_compare(const void *a, const void *b) | |
909 | { | |
ee36c709 GN |
910 | const spa_error_entry_t *sa = (const spa_error_entry_t *)a; |
911 | const spa_error_entry_t *sb = (const spa_error_entry_t *)b; | |
34dc7c2f BB |
912 | int ret; |
913 | ||
ee36c709 | 914 | ret = memcmp(&sa->se_bookmark, &sb->se_bookmark, |
5dbd68a3 | 915 | sizeof (zbookmark_phys_t)); |
34dc7c2f | 916 | |
ee36c709 | 917 | return (AVL_ISIGN(ret)); |
34dc7c2f BB |
918 | } |
919 | ||
920 | /* | |
921 | * Utility function which retrieves copies of the current logs and | |
922 | * re-initializes them in the process. | |
923 | */ | |
924 | void | |
925 | spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
926 | { | |
927 | ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
928 | ||
929 | bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
930 | bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
931 | ||
932 | avl_create(&spa->spa_errlist_scrub, | |
933 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
934 | offsetof(spa_error_entry_t, se_avl)); | |
935 | avl_create(&spa->spa_errlist_last, | |
936 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
937 | offsetof(spa_error_entry_t, se_avl)); | |
938 | } | |
939 | ||
7ef5e54e AL |
940 | static void |
941 | spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
34dc7c2f | 942 | { |
7ef5e54e AL |
943 | const zio_taskq_info_t *ztip = &zio_taskqs[t][q]; |
944 | enum zti_modes mode = ztip->zti_mode; | |
945 | uint_t value = ztip->zti_value; | |
946 | uint_t count = ztip->zti_count; | |
947 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
1c27024e | 948 | uint_t flags = 0; |
428870ff | 949 | boolean_t batch = B_FALSE; |
34dc7c2f | 950 | |
7ef5e54e AL |
951 | if (mode == ZTI_MODE_NULL) { |
952 | tqs->stqs_count = 0; | |
953 | tqs->stqs_taskq = NULL; | |
954 | return; | |
955 | } | |
428870ff | 956 | |
7ef5e54e | 957 | ASSERT3U(count, >, 0); |
428870ff | 958 | |
7ef5e54e AL |
959 | tqs->stqs_count = count; |
960 | tqs->stqs_taskq = kmem_alloc(count * sizeof (taskq_t *), KM_SLEEP); | |
428870ff | 961 | |
e8b96c60 MA |
962 | switch (mode) { |
963 | case ZTI_MODE_FIXED: | |
964 | ASSERT3U(value, >=, 1); | |
965 | value = MAX(value, 1); | |
d33931a8 | 966 | flags |= TASKQ_DYNAMIC; |
e8b96c60 | 967 | break; |
7ef5e54e | 968 | |
e8b96c60 MA |
969 | case ZTI_MODE_BATCH: |
970 | batch = B_TRUE; | |
971 | flags |= TASKQ_THREADS_CPU_PCT; | |
dcb6bed1 | 972 | value = MIN(zio_taskq_batch_pct, 100); |
e8b96c60 | 973 | break; |
7ef5e54e | 974 | |
e8b96c60 MA |
975 | default: |
976 | panic("unrecognized mode for %s_%s taskq (%u:%u) in " | |
977 | "spa_activate()", | |
978 | zio_type_name[t], zio_taskq_types[q], mode, value); | |
979 | break; | |
980 | } | |
7ef5e54e | 981 | |
1c27024e | 982 | for (uint_t i = 0; i < count; i++) { |
e8b96c60 | 983 | taskq_t *tq; |
af430294 | 984 | char name[32]; |
7ef5e54e | 985 | |
af430294 MA |
986 | (void) snprintf(name, sizeof (name), "%s_%s", |
987 | zio_type_name[t], zio_taskq_types[q]); | |
7ef5e54e AL |
988 | |
989 | if (zio_taskq_sysdc && spa->spa_proc != &p0) { | |
990 | if (batch) | |
991 | flags |= TASKQ_DC_BATCH; | |
992 | ||
993 | tq = taskq_create_sysdc(name, value, 50, INT_MAX, | |
994 | spa->spa_proc, zio_taskq_basedc, flags); | |
995 | } else { | |
e8b96c60 MA |
996 | pri_t pri = maxclsyspri; |
997 | /* | |
998 | * The write issue taskq can be extremely CPU | |
1229323d BB |
999 | * intensive. Run it at slightly less important |
1000 | * priority than the other taskqs. Under Linux this | |
1001 | * means incrementing the priority value on platforms | |
1002 | * like illumos it should be decremented. | |
e8b96c60 MA |
1003 | */ |
1004 | if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE) | |
1229323d | 1005 | pri++; |
e8b96c60 MA |
1006 | |
1007 | tq = taskq_create_proc(name, value, pri, 50, | |
7ef5e54e AL |
1008 | INT_MAX, spa->spa_proc, flags); |
1009 | } | |
1010 | ||
1011 | tqs->stqs_taskq[i] = tq; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | static void | |
1016 | spa_taskqs_fini(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
1017 | { | |
1018 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
7ef5e54e AL |
1019 | |
1020 | if (tqs->stqs_taskq == NULL) { | |
1021 | ASSERT3U(tqs->stqs_count, ==, 0); | |
1022 | return; | |
1023 | } | |
1024 | ||
1c27024e | 1025 | for (uint_t i = 0; i < tqs->stqs_count; i++) { |
7ef5e54e AL |
1026 | ASSERT3P(tqs->stqs_taskq[i], !=, NULL); |
1027 | taskq_destroy(tqs->stqs_taskq[i]); | |
428870ff | 1028 | } |
34dc7c2f | 1029 | |
7ef5e54e AL |
1030 | kmem_free(tqs->stqs_taskq, tqs->stqs_count * sizeof (taskq_t *)); |
1031 | tqs->stqs_taskq = NULL; | |
1032 | } | |
34dc7c2f | 1033 | |
7ef5e54e AL |
1034 | /* |
1035 | * Dispatch a task to the appropriate taskq for the ZFS I/O type and priority. | |
1036 | * Note that a type may have multiple discrete taskqs to avoid lock contention | |
1037 | * on the taskq itself. In that case we choose which taskq at random by using | |
1038 | * the low bits of gethrtime(). | |
1039 | */ | |
1040 | void | |
1041 | spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
1042 | task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent) | |
1043 | { | |
1044 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
1045 | taskq_t *tq; | |
1046 | ||
1047 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
1048 | ASSERT3U(tqs->stqs_count, !=, 0); | |
1049 | ||
1050 | if (tqs->stqs_count == 1) { | |
1051 | tq = tqs->stqs_taskq[0]; | |
1052 | } else { | |
c12936b1 | 1053 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
428870ff | 1054 | } |
7ef5e54e AL |
1055 | |
1056 | taskq_dispatch_ent(tq, func, arg, flags, ent); | |
428870ff BB |
1057 | } |
1058 | ||
044baf00 BB |
1059 | /* |
1060 | * Same as spa_taskq_dispatch_ent() but block on the task until completion. | |
1061 | */ | |
1062 | void | |
1063 | spa_taskq_dispatch_sync(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
1064 | task_func_t *func, void *arg, uint_t flags) | |
1065 | { | |
1066 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
1067 | taskq_t *tq; | |
1068 | taskqid_t id; | |
1069 | ||
1070 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
1071 | ASSERT3U(tqs->stqs_count, !=, 0); | |
1072 | ||
1073 | if (tqs->stqs_count == 1) { | |
1074 | tq = tqs->stqs_taskq[0]; | |
1075 | } else { | |
c12936b1 | 1076 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
044baf00 BB |
1077 | } |
1078 | ||
1079 | id = taskq_dispatch(tq, func, arg, flags); | |
1080 | if (id) | |
1081 | taskq_wait_id(tq, id); | |
1082 | } | |
1083 | ||
428870ff BB |
1084 | static void |
1085 | spa_create_zio_taskqs(spa_t *spa) | |
1086 | { | |
1c27024e DB |
1087 | for (int t = 0; t < ZIO_TYPES; t++) { |
1088 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 1089 | spa_taskqs_init(spa, t, q); |
428870ff BB |
1090 | } |
1091 | } | |
1092 | } | |
9babb374 | 1093 | |
c25b8f99 BB |
1094 | /* |
1095 | * Disabled until spa_thread() can be adapted for Linux. | |
1096 | */ | |
1097 | #undef HAVE_SPA_THREAD | |
1098 | ||
7b89a549 | 1099 | #if defined(_KERNEL) && defined(HAVE_SPA_THREAD) |
428870ff BB |
1100 | static void |
1101 | spa_thread(void *arg) | |
1102 | { | |
93ce2b4c | 1103 | psetid_t zio_taskq_psrset_bind = PS_NONE; |
428870ff | 1104 | callb_cpr_t cprinfo; |
9babb374 | 1105 | |
428870ff BB |
1106 | spa_t *spa = arg; |
1107 | user_t *pu = PTOU(curproc); | |
9babb374 | 1108 | |
428870ff BB |
1109 | CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr, |
1110 | spa->spa_name); | |
9babb374 | 1111 | |
428870ff BB |
1112 | ASSERT(curproc != &p0); |
1113 | (void) snprintf(pu->u_psargs, sizeof (pu->u_psargs), | |
1114 | "zpool-%s", spa->spa_name); | |
1115 | (void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm)); | |
1116 | ||
1117 | /* bind this thread to the requested psrset */ | |
1118 | if (zio_taskq_psrset_bind != PS_NONE) { | |
1119 | pool_lock(); | |
1120 | mutex_enter(&cpu_lock); | |
1121 | mutex_enter(&pidlock); | |
1122 | mutex_enter(&curproc->p_lock); | |
1123 | ||
1124 | if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind, | |
1125 | 0, NULL, NULL) == 0) { | |
1126 | curthread->t_bind_pset = zio_taskq_psrset_bind; | |
1127 | } else { | |
1128 | cmn_err(CE_WARN, | |
1129 | "Couldn't bind process for zfs pool \"%s\" to " | |
1130 | "pset %d\n", spa->spa_name, zio_taskq_psrset_bind); | |
1131 | } | |
1132 | ||
1133 | mutex_exit(&curproc->p_lock); | |
1134 | mutex_exit(&pidlock); | |
1135 | mutex_exit(&cpu_lock); | |
1136 | pool_unlock(); | |
1137 | } | |
1138 | ||
1139 | if (zio_taskq_sysdc) { | |
1140 | sysdc_thread_enter(curthread, 100, 0); | |
1141 | } | |
1142 | ||
1143 | spa->spa_proc = curproc; | |
1144 | spa->spa_did = curthread->t_did; | |
1145 | ||
1146 | spa_create_zio_taskqs(spa); | |
1147 | ||
1148 | mutex_enter(&spa->spa_proc_lock); | |
1149 | ASSERT(spa->spa_proc_state == SPA_PROC_CREATED); | |
1150 | ||
1151 | spa->spa_proc_state = SPA_PROC_ACTIVE; | |
1152 | cv_broadcast(&spa->spa_proc_cv); | |
1153 | ||
1154 | CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
1155 | while (spa->spa_proc_state == SPA_PROC_ACTIVE) | |
1156 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1157 | CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock); | |
1158 | ||
1159 | ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE); | |
1160 | spa->spa_proc_state = SPA_PROC_GONE; | |
1161 | spa->spa_proc = &p0; | |
1162 | cv_broadcast(&spa->spa_proc_cv); | |
1163 | CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */ | |
1164 | ||
1165 | mutex_enter(&curproc->p_lock); | |
1166 | lwp_exit(); | |
1167 | } | |
1168 | #endif | |
1169 | ||
1170 | /* | |
1171 | * Activate an uninitialized pool. | |
1172 | */ | |
1173 | static void | |
1174 | spa_activate(spa_t *spa, int mode) | |
1175 | { | |
1176 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
1177 | ||
1178 | spa->spa_state = POOL_STATE_ACTIVE; | |
1179 | spa->spa_mode = mode; | |
1180 | ||
1181 | spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
1182 | spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
cc99f275 DB |
1183 | spa->spa_special_class = metaslab_class_create(spa, zfs_metaslab_ops); |
1184 | spa->spa_dedup_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
428870ff BB |
1185 | |
1186 | /* Try to create a covering process */ | |
1187 | mutex_enter(&spa->spa_proc_lock); | |
1188 | ASSERT(spa->spa_proc_state == SPA_PROC_NONE); | |
1189 | ASSERT(spa->spa_proc == &p0); | |
1190 | spa->spa_did = 0; | |
1191 | ||
7b89a549 | 1192 | #ifdef HAVE_SPA_THREAD |
428870ff BB |
1193 | /* Only create a process if we're going to be around a while. */ |
1194 | if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) { | |
1195 | if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri, | |
1196 | NULL, 0) == 0) { | |
1197 | spa->spa_proc_state = SPA_PROC_CREATED; | |
1198 | while (spa->spa_proc_state == SPA_PROC_CREATED) { | |
1199 | cv_wait(&spa->spa_proc_cv, | |
1200 | &spa->spa_proc_lock); | |
9babb374 | 1201 | } |
428870ff BB |
1202 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); |
1203 | ASSERT(spa->spa_proc != &p0); | |
1204 | ASSERT(spa->spa_did != 0); | |
1205 | } else { | |
1206 | #ifdef _KERNEL | |
1207 | cmn_err(CE_WARN, | |
1208 | "Couldn't create process for zfs pool \"%s\"\n", | |
1209 | spa->spa_name); | |
1210 | #endif | |
b128c09f | 1211 | } |
34dc7c2f | 1212 | } |
7b89a549 | 1213 | #endif /* HAVE_SPA_THREAD */ |
428870ff BB |
1214 | mutex_exit(&spa->spa_proc_lock); |
1215 | ||
1216 | /* If we didn't create a process, we need to create our taskqs. */ | |
1217 | if (spa->spa_proc == &p0) { | |
1218 | spa_create_zio_taskqs(spa); | |
1219 | } | |
34dc7c2f | 1220 | |
a1d477c2 MA |
1221 | for (size_t i = 0; i < TXG_SIZE; i++) |
1222 | spa->spa_txg_zio[i] = zio_root(spa, NULL, NULL, 0); | |
1223 | ||
b128c09f BB |
1224 | list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), |
1225 | offsetof(vdev_t, vdev_config_dirty_node)); | |
0c66c32d JG |
1226 | list_create(&spa->spa_evicting_os_list, sizeof (objset_t), |
1227 | offsetof(objset_t, os_evicting_node)); | |
b128c09f BB |
1228 | list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), |
1229 | offsetof(vdev_t, vdev_state_dirty_node)); | |
34dc7c2f | 1230 | |
4747a7d3 | 1231 | txg_list_create(&spa->spa_vdev_txg_list, spa, |
34dc7c2f BB |
1232 | offsetof(struct vdev, vdev_txg_node)); |
1233 | ||
1234 | avl_create(&spa->spa_errlist_scrub, | |
1235 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1236 | offsetof(spa_error_entry_t, se_avl)); | |
1237 | avl_create(&spa->spa_errlist_last, | |
1238 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1239 | offsetof(spa_error_entry_t, se_avl)); | |
a0bd735a | 1240 | |
b5256303 TC |
1241 | spa_keystore_init(&spa->spa_keystore); |
1242 | ||
a0bd735a BP |
1243 | /* |
1244 | * This taskq is used to perform zvol-minor-related tasks | |
1245 | * asynchronously. This has several advantages, including easy | |
1246 | * resolution of various deadlocks (zfsonlinux bug #3681). | |
1247 | * | |
1248 | * The taskq must be single threaded to ensure tasks are always | |
1249 | * processed in the order in which they were dispatched. | |
1250 | * | |
1251 | * A taskq per pool allows one to keep the pools independent. | |
1252 | * This way if one pool is suspended, it will not impact another. | |
1253 | * | |
1254 | * The preferred location to dispatch a zvol minor task is a sync | |
1255 | * task. In this context, there is easy access to the spa_t and minimal | |
1256 | * error handling is required because the sync task must succeed. | |
1257 | */ | |
1258 | spa->spa_zvol_taskq = taskq_create("z_zvol", 1, defclsyspri, | |
1259 | 1, INT_MAX, 0); | |
1de321e6 | 1260 | |
77d8a0f1 | 1261 | /* |
1262 | * Taskq dedicated to prefetcher threads: this is used to prevent the | |
1263 | * pool traverse code from monopolizing the global (and limited) | |
1264 | * system_taskq by inappropriately scheduling long running tasks on it. | |
1265 | */ | |
1266 | spa->spa_prefetch_taskq = taskq_create("z_prefetch", boot_ncpus, | |
1267 | defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC); | |
1268 | ||
1de321e6 JX |
1269 | /* |
1270 | * The taskq to upgrade datasets in this pool. Currently used by | |
9c5167d1 | 1271 | * feature SPA_FEATURE_USEROBJ_ACCOUNTING/SPA_FEATURE_PROJECT_QUOTA. |
1de321e6 JX |
1272 | */ |
1273 | spa->spa_upgrade_taskq = taskq_create("z_upgrade", boot_ncpus, | |
1274 | defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC); | |
34dc7c2f BB |
1275 | } |
1276 | ||
1277 | /* | |
1278 | * Opposite of spa_activate(). | |
1279 | */ | |
1280 | static void | |
1281 | spa_deactivate(spa_t *spa) | |
1282 | { | |
34dc7c2f BB |
1283 | ASSERT(spa->spa_sync_on == B_FALSE); |
1284 | ASSERT(spa->spa_dsl_pool == NULL); | |
1285 | ASSERT(spa->spa_root_vdev == NULL); | |
9babb374 | 1286 | ASSERT(spa->spa_async_zio_root == NULL); |
34dc7c2f BB |
1287 | ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); |
1288 | ||
0c66c32d JG |
1289 | spa_evicting_os_wait(spa); |
1290 | ||
a0bd735a BP |
1291 | if (spa->spa_zvol_taskq) { |
1292 | taskq_destroy(spa->spa_zvol_taskq); | |
1293 | spa->spa_zvol_taskq = NULL; | |
1294 | } | |
1295 | ||
77d8a0f1 | 1296 | if (spa->spa_prefetch_taskq) { |
1297 | taskq_destroy(spa->spa_prefetch_taskq); | |
1298 | spa->spa_prefetch_taskq = NULL; | |
1299 | } | |
1300 | ||
1de321e6 JX |
1301 | if (spa->spa_upgrade_taskq) { |
1302 | taskq_destroy(spa->spa_upgrade_taskq); | |
1303 | spa->spa_upgrade_taskq = NULL; | |
1304 | } | |
1305 | ||
34dc7c2f BB |
1306 | txg_list_destroy(&spa->spa_vdev_txg_list); |
1307 | ||
b128c09f | 1308 | list_destroy(&spa->spa_config_dirty_list); |
0c66c32d | 1309 | list_destroy(&spa->spa_evicting_os_list); |
b128c09f | 1310 | list_destroy(&spa->spa_state_dirty_list); |
34dc7c2f | 1311 | |
57ddcda1 | 1312 | taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid); |
cc92e9d0 | 1313 | |
1c27024e DB |
1314 | for (int t = 0; t < ZIO_TYPES; t++) { |
1315 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 1316 | spa_taskqs_fini(spa, t, q); |
b128c09f | 1317 | } |
34dc7c2f BB |
1318 | } |
1319 | ||
a1d477c2 MA |
1320 | for (size_t i = 0; i < TXG_SIZE; i++) { |
1321 | ASSERT3P(spa->spa_txg_zio[i], !=, NULL); | |
1322 | VERIFY0(zio_wait(spa->spa_txg_zio[i])); | |
1323 | spa->spa_txg_zio[i] = NULL; | |
1324 | } | |
1325 | ||
34dc7c2f BB |
1326 | metaslab_class_destroy(spa->spa_normal_class); |
1327 | spa->spa_normal_class = NULL; | |
1328 | ||
1329 | metaslab_class_destroy(spa->spa_log_class); | |
1330 | spa->spa_log_class = NULL; | |
1331 | ||
cc99f275 DB |
1332 | metaslab_class_destroy(spa->spa_special_class); |
1333 | spa->spa_special_class = NULL; | |
1334 | ||
1335 | metaslab_class_destroy(spa->spa_dedup_class); | |
1336 | spa->spa_dedup_class = NULL; | |
1337 | ||
34dc7c2f BB |
1338 | /* |
1339 | * If this was part of an import or the open otherwise failed, we may | |
1340 | * still have errors left in the queues. Empty them just in case. | |
1341 | */ | |
1342 | spa_errlog_drain(spa); | |
34dc7c2f BB |
1343 | avl_destroy(&spa->spa_errlist_scrub); |
1344 | avl_destroy(&spa->spa_errlist_last); | |
1345 | ||
b5256303 TC |
1346 | spa_keystore_fini(&spa->spa_keystore); |
1347 | ||
34dc7c2f | 1348 | spa->spa_state = POOL_STATE_UNINITIALIZED; |
428870ff BB |
1349 | |
1350 | mutex_enter(&spa->spa_proc_lock); | |
1351 | if (spa->spa_proc_state != SPA_PROC_NONE) { | |
1352 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); | |
1353 | spa->spa_proc_state = SPA_PROC_DEACTIVATE; | |
1354 | cv_broadcast(&spa->spa_proc_cv); | |
1355 | while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) { | |
1356 | ASSERT(spa->spa_proc != &p0); | |
1357 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1358 | } | |
1359 | ASSERT(spa->spa_proc_state == SPA_PROC_GONE); | |
1360 | spa->spa_proc_state = SPA_PROC_NONE; | |
1361 | } | |
1362 | ASSERT(spa->spa_proc == &p0); | |
1363 | mutex_exit(&spa->spa_proc_lock); | |
1364 | ||
1365 | /* | |
1366 | * We want to make sure spa_thread() has actually exited the ZFS | |
1367 | * module, so that the module can't be unloaded out from underneath | |
1368 | * it. | |
1369 | */ | |
1370 | if (spa->spa_did != 0) { | |
1371 | thread_join(spa->spa_did); | |
1372 | spa->spa_did = 0; | |
1373 | } | |
34dc7c2f BB |
1374 | } |
1375 | ||
1376 | /* | |
1377 | * Verify a pool configuration, and construct the vdev tree appropriately. This | |
1378 | * will create all the necessary vdevs in the appropriate layout, with each vdev | |
1379 | * in the CLOSED state. This will prep the pool before open/creation/import. | |
1380 | * All vdev validation is done by the vdev_alloc() routine. | |
1381 | */ | |
1382 | static int | |
1383 | spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
1384 | uint_t id, int atype) | |
1385 | { | |
1386 | nvlist_t **child; | |
9babb374 | 1387 | uint_t children; |
34dc7c2f BB |
1388 | int error; |
1389 | ||
1390 | if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
1391 | return (error); | |
1392 | ||
1393 | if ((*vdp)->vdev_ops->vdev_op_leaf) | |
1394 | return (0); | |
1395 | ||
b128c09f BB |
1396 | error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
1397 | &child, &children); | |
1398 | ||
1399 | if (error == ENOENT) | |
1400 | return (0); | |
1401 | ||
1402 | if (error) { | |
34dc7c2f BB |
1403 | vdev_free(*vdp); |
1404 | *vdp = NULL; | |
2e528b49 | 1405 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
1406 | } |
1407 | ||
1c27024e | 1408 | for (int c = 0; c < children; c++) { |
34dc7c2f BB |
1409 | vdev_t *vd; |
1410 | if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
1411 | atype)) != 0) { | |
1412 | vdev_free(*vdp); | |
1413 | *vdp = NULL; | |
1414 | return (error); | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | ASSERT(*vdp != NULL); | |
1419 | ||
1420 | return (0); | |
1421 | } | |
1422 | ||
1423 | /* | |
1424 | * Opposite of spa_load(). | |
1425 | */ | |
1426 | static void | |
1427 | spa_unload(spa_t *spa) | |
1428 | { | |
1c27024e | 1429 | int i; |
34dc7c2f | 1430 | |
b128c09f BB |
1431 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
1432 | ||
4a0ee12a PZ |
1433 | spa_load_note(spa, "UNLOADING"); |
1434 | ||
34dc7c2f BB |
1435 | /* |
1436 | * Stop async tasks. | |
1437 | */ | |
1438 | spa_async_suspend(spa); | |
1439 | ||
1440 | /* | |
1441 | * Stop syncing. | |
1442 | */ | |
1443 | if (spa->spa_sync_on) { | |
1444 | txg_sync_stop(spa->spa_dsl_pool); | |
1445 | spa->spa_sync_on = B_FALSE; | |
1446 | } | |
1447 | ||
4e21fd06 DB |
1448 | /* |
1449 | * Even though vdev_free() also calls vdev_metaslab_fini, we need | |
1450 | * to call it earlier, before we wait for async i/o to complete. | |
1451 | * This ensures that there is no async metaslab prefetching, by | |
1452 | * calling taskq_wait(mg_taskq). | |
1453 | */ | |
1454 | if (spa->spa_root_vdev != NULL) { | |
1455 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1c27024e | 1456 | for (int c = 0; c < spa->spa_root_vdev->vdev_children; c++) |
4e21fd06 DB |
1457 | vdev_metaslab_fini(spa->spa_root_vdev->vdev_child[c]); |
1458 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1459 | } | |
1460 | ||
379ca9cf OF |
1461 | if (spa->spa_mmp.mmp_thread) |
1462 | mmp_thread_stop(spa); | |
1463 | ||
34dc7c2f | 1464 | /* |
b128c09f | 1465 | * Wait for any outstanding async I/O to complete. |
34dc7c2f | 1466 | */ |
9babb374 | 1467 | if (spa->spa_async_zio_root != NULL) { |
1c27024e | 1468 | for (int i = 0; i < max_ncpus; i++) |
e022864d MA |
1469 | (void) zio_wait(spa->spa_async_zio_root[i]); |
1470 | kmem_free(spa->spa_async_zio_root, max_ncpus * sizeof (void *)); | |
9babb374 BB |
1471 | spa->spa_async_zio_root = NULL; |
1472 | } | |
34dc7c2f | 1473 | |
a1d477c2 MA |
1474 | if (spa->spa_vdev_removal != NULL) { |
1475 | spa_vdev_removal_destroy(spa->spa_vdev_removal); | |
1476 | spa->spa_vdev_removal = NULL; | |
1477 | } | |
1478 | ||
9d5b5245 SD |
1479 | if (spa->spa_condense_zthr != NULL) { |
1480 | ASSERT(!zthr_isrunning(spa->spa_condense_zthr)); | |
1481 | zthr_destroy(spa->spa_condense_zthr); | |
1482 | spa->spa_condense_zthr = NULL; | |
1483 | } | |
1484 | ||
d2734cce SD |
1485 | if (spa->spa_checkpoint_discard_zthr != NULL) { |
1486 | ASSERT(!zthr_isrunning(spa->spa_checkpoint_discard_zthr)); | |
1487 | zthr_destroy(spa->spa_checkpoint_discard_zthr); | |
1488 | spa->spa_checkpoint_discard_zthr = NULL; | |
1489 | } | |
1490 | ||
a1d477c2 MA |
1491 | spa_condense_fini(spa); |
1492 | ||
428870ff BB |
1493 | bpobj_close(&spa->spa_deferred_bpobj); |
1494 | ||
93cf2076 GW |
1495 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
1496 | ||
1497 | /* | |
1498 | * Close all vdevs. | |
1499 | */ | |
1500 | if (spa->spa_root_vdev) | |
1501 | vdev_free(spa->spa_root_vdev); | |
1502 | ASSERT(spa->spa_root_vdev == NULL); | |
1503 | ||
34dc7c2f BB |
1504 | /* |
1505 | * Close the dsl pool. | |
1506 | */ | |
1507 | if (spa->spa_dsl_pool) { | |
1508 | dsl_pool_close(spa->spa_dsl_pool); | |
1509 | spa->spa_dsl_pool = NULL; | |
428870ff | 1510 | spa->spa_meta_objset = NULL; |
34dc7c2f BB |
1511 | } |
1512 | ||
428870ff BB |
1513 | ddt_unload(spa); |
1514 | ||
fb5f0bc8 BB |
1515 | /* |
1516 | * Drop and purge level 2 cache | |
1517 | */ | |
1518 | spa_l2cache_drop(spa); | |
1519 | ||
34dc7c2f BB |
1520 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
1521 | vdev_free(spa->spa_spares.sav_vdevs[i]); | |
1522 | if (spa->spa_spares.sav_vdevs) { | |
1523 | kmem_free(spa->spa_spares.sav_vdevs, | |
1524 | spa->spa_spares.sav_count * sizeof (void *)); | |
1525 | spa->spa_spares.sav_vdevs = NULL; | |
1526 | } | |
1527 | if (spa->spa_spares.sav_config) { | |
1528 | nvlist_free(spa->spa_spares.sav_config); | |
1529 | spa->spa_spares.sav_config = NULL; | |
1530 | } | |
b128c09f | 1531 | spa->spa_spares.sav_count = 0; |
34dc7c2f | 1532 | |
5ffb9d1d GW |
1533 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
1534 | vdev_clear_stats(spa->spa_l2cache.sav_vdevs[i]); | |
34dc7c2f | 1535 | vdev_free(spa->spa_l2cache.sav_vdevs[i]); |
5ffb9d1d | 1536 | } |
34dc7c2f BB |
1537 | if (spa->spa_l2cache.sav_vdevs) { |
1538 | kmem_free(spa->spa_l2cache.sav_vdevs, | |
1539 | spa->spa_l2cache.sav_count * sizeof (void *)); | |
1540 | spa->spa_l2cache.sav_vdevs = NULL; | |
1541 | } | |
1542 | if (spa->spa_l2cache.sav_config) { | |
1543 | nvlist_free(spa->spa_l2cache.sav_config); | |
1544 | spa->spa_l2cache.sav_config = NULL; | |
1545 | } | |
b128c09f | 1546 | spa->spa_l2cache.sav_count = 0; |
34dc7c2f BB |
1547 | |
1548 | spa->spa_async_suspended = 0; | |
fb5f0bc8 | 1549 | |
a1d477c2 MA |
1550 | spa->spa_indirect_vdevs_loaded = B_FALSE; |
1551 | ||
d96eb2b1 DM |
1552 | if (spa->spa_comment != NULL) { |
1553 | spa_strfree(spa->spa_comment); | |
1554 | spa->spa_comment = NULL; | |
1555 | } | |
1556 | ||
fb5f0bc8 | 1557 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1558 | } |
1559 | ||
1560 | /* | |
1561 | * Load (or re-load) the current list of vdevs describing the active spares for | |
1562 | * this pool. When this is called, we have some form of basic information in | |
1563 | * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and | |
1564 | * then re-generate a more complete list including status information. | |
1565 | */ | |
a1d477c2 | 1566 | void |
34dc7c2f BB |
1567 | spa_load_spares(spa_t *spa) |
1568 | { | |
1569 | nvlist_t **spares; | |
1570 | uint_t nspares; | |
1571 | int i; | |
1572 | vdev_t *vd, *tvd; | |
1573 | ||
d2734cce SD |
1574 | #ifndef _KERNEL |
1575 | /* | |
1576 | * zdb opens both the current state of the pool and the | |
1577 | * checkpointed state (if present), with a different spa_t. | |
1578 | * | |
1579 | * As spare vdevs are shared among open pools, we skip loading | |
1580 | * them when we load the checkpointed state of the pool. | |
1581 | */ | |
1582 | if (!spa_writeable(spa)) | |
1583 | return; | |
1584 | #endif | |
1585 | ||
b128c09f BB |
1586 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1587 | ||
34dc7c2f BB |
1588 | /* |
1589 | * First, close and free any existing spare vdevs. | |
1590 | */ | |
1591 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
1592 | vd = spa->spa_spares.sav_vdevs[i]; | |
1593 | ||
1594 | /* Undo the call to spa_activate() below */ | |
b128c09f BB |
1595 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1596 | B_FALSE)) != NULL && tvd->vdev_isspare) | |
34dc7c2f BB |
1597 | spa_spare_remove(tvd); |
1598 | vdev_close(vd); | |
1599 | vdev_free(vd); | |
1600 | } | |
1601 | ||
1602 | if (spa->spa_spares.sav_vdevs) | |
1603 | kmem_free(spa->spa_spares.sav_vdevs, | |
1604 | spa->spa_spares.sav_count * sizeof (void *)); | |
1605 | ||
1606 | if (spa->spa_spares.sav_config == NULL) | |
1607 | nspares = 0; | |
1608 | else | |
1609 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
1610 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1611 | ||
1612 | spa->spa_spares.sav_count = (int)nspares; | |
1613 | spa->spa_spares.sav_vdevs = NULL; | |
1614 | ||
1615 | if (nspares == 0) | |
1616 | return; | |
1617 | ||
1618 | /* | |
1619 | * Construct the array of vdevs, opening them to get status in the | |
1620 | * process. For each spare, there is potentially two different vdev_t | |
1621 | * structures associated with it: one in the list of spares (used only | |
1622 | * for basic validation purposes) and one in the active vdev | |
1623 | * configuration (if it's spared in). During this phase we open and | |
1624 | * validate each vdev on the spare list. If the vdev also exists in the | |
1625 | * active configuration, then we also mark this vdev as an active spare. | |
1626 | */ | |
904ea276 | 1627 | spa->spa_spares.sav_vdevs = kmem_zalloc(nspares * sizeof (void *), |
79c76d5b | 1628 | KM_SLEEP); |
34dc7c2f BB |
1629 | for (i = 0; i < spa->spa_spares.sav_count; i++) { |
1630 | VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
1631 | VDEV_ALLOC_SPARE) == 0); | |
1632 | ASSERT(vd != NULL); | |
1633 | ||
1634 | spa->spa_spares.sav_vdevs[i] = vd; | |
1635 | ||
b128c09f BB |
1636 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1637 | B_FALSE)) != NULL) { | |
34dc7c2f BB |
1638 | if (!tvd->vdev_isspare) |
1639 | spa_spare_add(tvd); | |
1640 | ||
1641 | /* | |
1642 | * We only mark the spare active if we were successfully | |
1643 | * able to load the vdev. Otherwise, importing a pool | |
1644 | * with a bad active spare would result in strange | |
1645 | * behavior, because multiple pool would think the spare | |
1646 | * is actively in use. | |
1647 | * | |
1648 | * There is a vulnerability here to an equally bizarre | |
1649 | * circumstance, where a dead active spare is later | |
1650 | * brought back to life (onlined or otherwise). Given | |
1651 | * the rarity of this scenario, and the extra complexity | |
1652 | * it adds, we ignore the possibility. | |
1653 | */ | |
1654 | if (!vdev_is_dead(tvd)) | |
1655 | spa_spare_activate(tvd); | |
1656 | } | |
1657 | ||
b128c09f | 1658 | vd->vdev_top = vd; |
9babb374 | 1659 | vd->vdev_aux = &spa->spa_spares; |
b128c09f | 1660 | |
34dc7c2f BB |
1661 | if (vdev_open(vd) != 0) |
1662 | continue; | |
1663 | ||
34dc7c2f BB |
1664 | if (vdev_validate_aux(vd) == 0) |
1665 | spa_spare_add(vd); | |
1666 | } | |
1667 | ||
1668 | /* | |
1669 | * Recompute the stashed list of spares, with status information | |
1670 | * this time. | |
1671 | */ | |
1672 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
1673 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1674 | ||
1675 | spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), | |
79c76d5b | 1676 | KM_SLEEP); |
34dc7c2f BB |
1677 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
1678 | spares[i] = vdev_config_generate(spa, | |
428870ff | 1679 | spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE); |
34dc7c2f BB |
1680 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
1681 | ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
1682 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1683 | nvlist_free(spares[i]); | |
1684 | kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); | |
1685 | } | |
1686 | ||
1687 | /* | |
1688 | * Load (or re-load) the current list of vdevs describing the active l2cache for | |
1689 | * this pool. When this is called, we have some form of basic information in | |
1690 | * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
1691 | * then re-generate a more complete list including status information. | |
1692 | * Devices which are already active have their details maintained, and are | |
1693 | * not re-opened. | |
1694 | */ | |
a1d477c2 | 1695 | void |
34dc7c2f BB |
1696 | spa_load_l2cache(spa_t *spa) |
1697 | { | |
460f239e | 1698 | nvlist_t **l2cache = NULL; |
34dc7c2f BB |
1699 | uint_t nl2cache; |
1700 | int i, j, oldnvdevs; | |
9babb374 | 1701 | uint64_t guid; |
a117a6d6 | 1702 | vdev_t *vd, **oldvdevs, **newvdevs; |
34dc7c2f BB |
1703 | spa_aux_vdev_t *sav = &spa->spa_l2cache; |
1704 | ||
d2734cce SD |
1705 | #ifndef _KERNEL |
1706 | /* | |
1707 | * zdb opens both the current state of the pool and the | |
1708 | * checkpointed state (if present), with a different spa_t. | |
1709 | * | |
1710 | * As L2 caches are part of the ARC which is shared among open | |
1711 | * pools, we skip loading them when we load the checkpointed | |
1712 | * state of the pool. | |
1713 | */ | |
1714 | if (!spa_writeable(spa)) | |
1715 | return; | |
1716 | #endif | |
1717 | ||
b128c09f BB |
1718 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1719 | ||
34dc7c2f BB |
1720 | oldvdevs = sav->sav_vdevs; |
1721 | oldnvdevs = sav->sav_count; | |
1722 | sav->sav_vdevs = NULL; | |
1723 | sav->sav_count = 0; | |
1724 | ||
67d60824 NB |
1725 | if (sav->sav_config == NULL) { |
1726 | nl2cache = 0; | |
1727 | newvdevs = NULL; | |
1728 | goto out; | |
1729 | } | |
1730 | ||
1731 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
1732 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1733 | newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); | |
1734 | ||
34dc7c2f BB |
1735 | /* |
1736 | * Process new nvlist of vdevs. | |
1737 | */ | |
1738 | for (i = 0; i < nl2cache; i++) { | |
1739 | VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
1740 | &guid) == 0); | |
1741 | ||
1742 | newvdevs[i] = NULL; | |
1743 | for (j = 0; j < oldnvdevs; j++) { | |
1744 | vd = oldvdevs[j]; | |
1745 | if (vd != NULL && guid == vd->vdev_guid) { | |
1746 | /* | |
1747 | * Retain previous vdev for add/remove ops. | |
1748 | */ | |
1749 | newvdevs[i] = vd; | |
1750 | oldvdevs[j] = NULL; | |
1751 | break; | |
1752 | } | |
1753 | } | |
1754 | ||
1755 | if (newvdevs[i] == NULL) { | |
1756 | /* | |
1757 | * Create new vdev | |
1758 | */ | |
1759 | VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
1760 | VDEV_ALLOC_L2CACHE) == 0); | |
1761 | ASSERT(vd != NULL); | |
1762 | newvdevs[i] = vd; | |
1763 | ||
1764 | /* | |
1765 | * Commit this vdev as an l2cache device, | |
1766 | * even if it fails to open. | |
1767 | */ | |
1768 | spa_l2cache_add(vd); | |
1769 | ||
b128c09f BB |
1770 | vd->vdev_top = vd; |
1771 | vd->vdev_aux = sav; | |
1772 | ||
1773 | spa_l2cache_activate(vd); | |
1774 | ||
34dc7c2f BB |
1775 | if (vdev_open(vd) != 0) |
1776 | continue; | |
1777 | ||
34dc7c2f BB |
1778 | (void) vdev_validate_aux(vd); |
1779 | ||
9babb374 BB |
1780 | if (!vdev_is_dead(vd)) |
1781 | l2arc_add_vdev(spa, vd); | |
34dc7c2f BB |
1782 | } |
1783 | } | |
1784 | ||
67d60824 NB |
1785 | sav->sav_vdevs = newvdevs; |
1786 | sav->sav_count = (int)nl2cache; | |
1787 | ||
1788 | /* | |
1789 | * Recompute the stashed list of l2cache devices, with status | |
1790 | * information this time. | |
1791 | */ | |
1792 | VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
1793 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1794 | ||
460f239e D |
1795 | if (sav->sav_count > 0) |
1796 | l2cache = kmem_alloc(sav->sav_count * sizeof (void *), | |
1797 | KM_SLEEP); | |
67d60824 NB |
1798 | for (i = 0; i < sav->sav_count; i++) |
1799 | l2cache[i] = vdev_config_generate(spa, | |
1800 | sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); | |
1801 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
1802 | ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
1803 | ||
1804 | out: | |
34dc7c2f BB |
1805 | /* |
1806 | * Purge vdevs that were dropped | |
1807 | */ | |
1808 | for (i = 0; i < oldnvdevs; i++) { | |
1809 | uint64_t pool; | |
1810 | ||
1811 | vd = oldvdevs[i]; | |
1812 | if (vd != NULL) { | |
5ffb9d1d GW |
1813 | ASSERT(vd->vdev_isl2cache); |
1814 | ||
fb5f0bc8 BB |
1815 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
1816 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 1817 | l2arc_remove_vdev(vd); |
5ffb9d1d GW |
1818 | vdev_clear_stats(vd); |
1819 | vdev_free(vd); | |
34dc7c2f BB |
1820 | } |
1821 | } | |
1822 | ||
1823 | if (oldvdevs) | |
1824 | kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
1825 | ||
34dc7c2f BB |
1826 | for (i = 0; i < sav->sav_count; i++) |
1827 | nvlist_free(l2cache[i]); | |
1828 | if (sav->sav_count) | |
1829 | kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
1830 | } | |
1831 | ||
1832 | static int | |
1833 | load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
1834 | { | |
1835 | dmu_buf_t *db; | |
1836 | char *packed = NULL; | |
1837 | size_t nvsize = 0; | |
1838 | int error; | |
1839 | *value = NULL; | |
1840 | ||
c3275b56 BB |
1841 | error = dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db); |
1842 | if (error) | |
1843 | return (error); | |
1844 | ||
34dc7c2f BB |
1845 | nvsize = *(uint64_t *)db->db_data; |
1846 | dmu_buf_rele(db, FTAG); | |
1847 | ||
77aef6f6 | 1848 | packed = vmem_alloc(nvsize, KM_SLEEP); |
9babb374 BB |
1849 | error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed, |
1850 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
1851 | if (error == 0) |
1852 | error = nvlist_unpack(packed, nvsize, value, 0); | |
77aef6f6 | 1853 | vmem_free(packed, nvsize); |
34dc7c2f BB |
1854 | |
1855 | return (error); | |
1856 | } | |
1857 | ||
6cb8e530 PZ |
1858 | /* |
1859 | * Concrete top-level vdevs that are not missing and are not logs. At every | |
1860 | * spa_sync we write new uberblocks to at least SPA_SYNC_MIN_VDEVS core tvds. | |
1861 | */ | |
1862 | static uint64_t | |
1863 | spa_healthy_core_tvds(spa_t *spa) | |
1864 | { | |
1865 | vdev_t *rvd = spa->spa_root_vdev; | |
1866 | uint64_t tvds = 0; | |
1867 | ||
1868 | for (uint64_t i = 0; i < rvd->vdev_children; i++) { | |
1869 | vdev_t *vd = rvd->vdev_child[i]; | |
1870 | if (vd->vdev_islog) | |
1871 | continue; | |
1872 | if (vdev_is_concrete(vd) && !vdev_is_dead(vd)) | |
1873 | tvds++; | |
1874 | } | |
1875 | ||
1876 | return (tvds); | |
1877 | } | |
1878 | ||
34dc7c2f BB |
1879 | /* |
1880 | * Checks to see if the given vdev could not be opened, in which case we post a | |
1881 | * sysevent to notify the autoreplace code that the device has been removed. | |
1882 | */ | |
1883 | static void | |
1884 | spa_check_removed(vdev_t *vd) | |
1885 | { | |
6cb8e530 | 1886 | for (uint64_t c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
1887 | spa_check_removed(vd->vdev_child[c]); |
1888 | ||
7011fb60 | 1889 | if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd) && |
a1d477c2 | 1890 | vdev_is_concrete(vd)) { |
fb390aaf | 1891 | zfs_post_autoreplace(vd->vdev_spa, vd); |
12fa0466 | 1892 | spa_event_notify(vd->vdev_spa, vd, NULL, ESC_ZFS_VDEV_CHECK); |
34dc7c2f BB |
1893 | } |
1894 | } | |
1895 | ||
6cb8e530 PZ |
1896 | static int |
1897 | spa_check_for_missing_logs(spa_t *spa) | |
9babb374 | 1898 | { |
6cb8e530 | 1899 | vdev_t *rvd = spa->spa_root_vdev; |
9babb374 | 1900 | |
428870ff | 1901 | /* |
572e2857 | 1902 | * If we're doing a normal import, then build up any additional |
6cb8e530 | 1903 | * diagnostic information about missing log devices. |
572e2857 | 1904 | * We'll pass this up to the user for further processing. |
428870ff | 1905 | */ |
572e2857 BB |
1906 | if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) { |
1907 | nvlist_t **child, *nv; | |
1908 | uint64_t idx = 0; | |
1909 | ||
160987b5 | 1910 | child = kmem_alloc(rvd->vdev_children * sizeof (nvlist_t *), |
79c76d5b BB |
1911 | KM_SLEEP); |
1912 | VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
572e2857 | 1913 | |
6cb8e530 | 1914 | for (uint64_t c = 0; c < rvd->vdev_children; c++) { |
572e2857 | 1915 | vdev_t *tvd = rvd->vdev_child[c]; |
572e2857 | 1916 | |
6cb8e530 PZ |
1917 | /* |
1918 | * We consider a device as missing only if it failed | |
1919 | * to open (i.e. offline or faulted is not considered | |
1920 | * as missing). | |
1921 | */ | |
1922 | if (tvd->vdev_islog && | |
1923 | tvd->vdev_state == VDEV_STATE_CANT_OPEN) { | |
1924 | child[idx++] = vdev_config_generate(spa, tvd, | |
1925 | B_FALSE, VDEV_CONFIG_MISSING); | |
1926 | } | |
572e2857 | 1927 | } |
9babb374 | 1928 | |
6cb8e530 PZ |
1929 | if (idx > 0) { |
1930 | fnvlist_add_nvlist_array(nv, | |
1931 | ZPOOL_CONFIG_CHILDREN, child, idx); | |
1932 | fnvlist_add_nvlist(spa->spa_load_info, | |
1933 | ZPOOL_CONFIG_MISSING_DEVICES, nv); | |
572e2857 | 1934 | |
6cb8e530 | 1935 | for (uint64_t i = 0; i < idx; i++) |
572e2857 BB |
1936 | nvlist_free(child[i]); |
1937 | } | |
1938 | nvlist_free(nv); | |
1939 | kmem_free(child, rvd->vdev_children * sizeof (char **)); | |
572e2857 | 1940 | |
6cb8e530 PZ |
1941 | if (idx > 0) { |
1942 | spa_load_failed(spa, "some log devices are missing"); | |
db7d07e1 | 1943 | vdev_dbgmsg_print_tree(rvd, 2); |
6cb8e530 PZ |
1944 | return (SET_ERROR(ENXIO)); |
1945 | } | |
1946 | } else { | |
1947 | for (uint64_t c = 0; c < rvd->vdev_children; c++) { | |
1948 | vdev_t *tvd = rvd->vdev_child[c]; | |
a1d477c2 | 1949 | |
6cb8e530 PZ |
1950 | if (tvd->vdev_islog && |
1951 | tvd->vdev_state == VDEV_STATE_CANT_OPEN) { | |
572e2857 | 1952 | spa_set_log_state(spa, SPA_LOG_CLEAR); |
6cb8e530 PZ |
1953 | spa_load_note(spa, "some log devices are " |
1954 | "missing, ZIL is dropped."); | |
db7d07e1 | 1955 | vdev_dbgmsg_print_tree(rvd, 2); |
6cb8e530 | 1956 | break; |
e0ab3ab5 | 1957 | } |
572e2857 | 1958 | } |
9babb374 | 1959 | } |
e0ab3ab5 | 1960 | |
6cb8e530 | 1961 | return (0); |
9babb374 BB |
1962 | } |
1963 | ||
b128c09f BB |
1964 | /* |
1965 | * Check for missing log devices | |
1966 | */ | |
13fe0198 | 1967 | static boolean_t |
b128c09f BB |
1968 | spa_check_logs(spa_t *spa) |
1969 | { | |
13fe0198 | 1970 | boolean_t rv = B_FALSE; |
9c43027b | 1971 | dsl_pool_t *dp = spa_get_dsl(spa); |
13fe0198 | 1972 | |
b128c09f | 1973 | switch (spa->spa_log_state) { |
e75c13c3 BB |
1974 | default: |
1975 | break; | |
b128c09f BB |
1976 | case SPA_LOG_MISSING: |
1977 | /* need to recheck in case slog has been restored */ | |
1978 | case SPA_LOG_UNKNOWN: | |
9c43027b AJ |
1979 | rv = (dmu_objset_find_dp(dp, dp->dp_root_dir_obj, |
1980 | zil_check_log_chain, NULL, DS_FIND_CHILDREN) != 0); | |
13fe0198 | 1981 | if (rv) |
428870ff | 1982 | spa_set_log_state(spa, SPA_LOG_MISSING); |
b128c09f | 1983 | break; |
b128c09f | 1984 | } |
13fe0198 | 1985 | return (rv); |
b128c09f BB |
1986 | } |
1987 | ||
428870ff BB |
1988 | static boolean_t |
1989 | spa_passivate_log(spa_t *spa) | |
34dc7c2f | 1990 | { |
428870ff BB |
1991 | vdev_t *rvd = spa->spa_root_vdev; |
1992 | boolean_t slog_found = B_FALSE; | |
b128c09f | 1993 | |
428870ff | 1994 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
fb5f0bc8 | 1995 | |
428870ff BB |
1996 | if (!spa_has_slogs(spa)) |
1997 | return (B_FALSE); | |
34dc7c2f | 1998 | |
1c27024e | 1999 | for (int c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
2000 | vdev_t *tvd = rvd->vdev_child[c]; |
2001 | metaslab_group_t *mg = tvd->vdev_mg; | |
34dc7c2f | 2002 | |
428870ff BB |
2003 | if (tvd->vdev_islog) { |
2004 | metaslab_group_passivate(mg); | |
2005 | slog_found = B_TRUE; | |
2006 | } | |
34dc7c2f BB |
2007 | } |
2008 | ||
428870ff BB |
2009 | return (slog_found); |
2010 | } | |
34dc7c2f | 2011 | |
428870ff BB |
2012 | static void |
2013 | spa_activate_log(spa_t *spa) | |
2014 | { | |
2015 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 2016 | |
428870ff BB |
2017 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
2018 | ||
1c27024e | 2019 | for (int c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
2020 | vdev_t *tvd = rvd->vdev_child[c]; |
2021 | metaslab_group_t *mg = tvd->vdev_mg; | |
2022 | ||
2023 | if (tvd->vdev_islog) | |
2024 | metaslab_group_activate(mg); | |
34dc7c2f | 2025 | } |
428870ff | 2026 | } |
34dc7c2f | 2027 | |
428870ff | 2028 | int |
a1d477c2 | 2029 | spa_reset_logs(spa_t *spa) |
428870ff | 2030 | { |
13fe0198 | 2031 | int error; |
9babb374 | 2032 | |
a1d477c2 | 2033 | error = dmu_objset_find(spa_name(spa), zil_reset, |
13fe0198 MA |
2034 | NULL, DS_FIND_CHILDREN); |
2035 | if (error == 0) { | |
428870ff BB |
2036 | /* |
2037 | * We successfully offlined the log device, sync out the | |
2038 | * current txg so that the "stubby" block can be removed | |
2039 | * by zil_sync(). | |
2040 | */ | |
2041 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
2042 | } | |
2043 | return (error); | |
2044 | } | |
34dc7c2f | 2045 | |
428870ff BB |
2046 | static void |
2047 | spa_aux_check_removed(spa_aux_vdev_t *sav) | |
2048 | { | |
1c27024e | 2049 | for (int i = 0; i < sav->sav_count; i++) |
428870ff BB |
2050 | spa_check_removed(sav->sav_vdevs[i]); |
2051 | } | |
34dc7c2f | 2052 | |
428870ff BB |
2053 | void |
2054 | spa_claim_notify(zio_t *zio) | |
2055 | { | |
2056 | spa_t *spa = zio->io_spa; | |
34dc7c2f | 2057 | |
428870ff BB |
2058 | if (zio->io_error) |
2059 | return; | |
34dc7c2f | 2060 | |
428870ff BB |
2061 | mutex_enter(&spa->spa_props_lock); /* any mutex will do */ |
2062 | if (spa->spa_claim_max_txg < zio->io_bp->blk_birth) | |
2063 | spa->spa_claim_max_txg = zio->io_bp->blk_birth; | |
2064 | mutex_exit(&spa->spa_props_lock); | |
2065 | } | |
34dc7c2f | 2066 | |
428870ff BB |
2067 | typedef struct spa_load_error { |
2068 | uint64_t sle_meta_count; | |
2069 | uint64_t sle_data_count; | |
2070 | } spa_load_error_t; | |
34dc7c2f | 2071 | |
428870ff BB |
2072 | static void |
2073 | spa_load_verify_done(zio_t *zio) | |
2074 | { | |
2075 | blkptr_t *bp = zio->io_bp; | |
2076 | spa_load_error_t *sle = zio->io_private; | |
2077 | dmu_object_type_t type = BP_GET_TYPE(bp); | |
2078 | int error = zio->io_error; | |
dea377c0 | 2079 | spa_t *spa = zio->io_spa; |
34dc7c2f | 2080 | |
a6255b7f | 2081 | abd_free(zio->io_abd); |
428870ff | 2082 | if (error) { |
9ae529ec | 2083 | if ((BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)) && |
428870ff | 2084 | type != DMU_OT_INTENT_LOG) |
bc89ac84 | 2085 | atomic_inc_64(&sle->sle_meta_count); |
428870ff | 2086 | else |
bc89ac84 | 2087 | atomic_inc_64(&sle->sle_data_count); |
34dc7c2f | 2088 | } |
dea377c0 MA |
2089 | |
2090 | mutex_enter(&spa->spa_scrub_lock); | |
d4a72f23 | 2091 | spa->spa_load_verify_ios--; |
dea377c0 MA |
2092 | cv_broadcast(&spa->spa_scrub_io_cv); |
2093 | mutex_exit(&spa->spa_scrub_lock); | |
428870ff | 2094 | } |
34dc7c2f | 2095 | |
dea377c0 MA |
2096 | /* |
2097 | * Maximum number of concurrent scrub i/os to create while verifying | |
2098 | * a pool while importing it. | |
2099 | */ | |
2100 | int spa_load_verify_maxinflight = 10000; | |
2101 | int spa_load_verify_metadata = B_TRUE; | |
2102 | int spa_load_verify_data = B_TRUE; | |
2103 | ||
428870ff BB |
2104 | /*ARGSUSED*/ |
2105 | static int | |
2106 | spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, | |
5dbd68a3 | 2107 | const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) |
428870ff | 2108 | { |
fcff0f35 | 2109 | if (bp == NULL || BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) |
dea377c0 MA |
2110 | return (0); |
2111 | /* | |
2112 | * Note: normally this routine will not be called if | |
2113 | * spa_load_verify_metadata is not set. However, it may be useful | |
2114 | * to manually set the flag after the traversal has begun. | |
2115 | */ | |
2116 | if (!spa_load_verify_metadata) | |
2117 | return (0); | |
a6255b7f | 2118 | if (!BP_IS_METADATA(bp) && !spa_load_verify_data) |
dea377c0 MA |
2119 | return (0); |
2120 | ||
1c27024e DB |
2121 | zio_t *rio = arg; |
2122 | size_t size = BP_GET_PSIZE(bp); | |
dea377c0 MA |
2123 | |
2124 | mutex_enter(&spa->spa_scrub_lock); | |
d4a72f23 | 2125 | while (spa->spa_load_verify_ios >= spa_load_verify_maxinflight) |
dea377c0 | 2126 | cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); |
d4a72f23 | 2127 | spa->spa_load_verify_ios++; |
dea377c0 MA |
2128 | mutex_exit(&spa->spa_scrub_lock); |
2129 | ||
a6255b7f | 2130 | zio_nowait(zio_read(rio, spa, bp, abd_alloc_for_io(size, B_FALSE), size, |
dea377c0 MA |
2131 | spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB, |
2132 | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL | | |
2133 | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb)); | |
428870ff BB |
2134 | return (0); |
2135 | } | |
34dc7c2f | 2136 | |
d1d19c78 PD |
2137 | /* ARGSUSED */ |
2138 | int | |
2139 | verify_dataset_name_len(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg) | |
2140 | { | |
2141 | if (dsl_dataset_namelen(ds) >= ZFS_MAX_DATASET_NAME_LEN) | |
2142 | return (SET_ERROR(ENAMETOOLONG)); | |
2143 | ||
2144 | return (0); | |
2145 | } | |
2146 | ||
428870ff BB |
2147 | static int |
2148 | spa_load_verify(spa_t *spa) | |
2149 | { | |
2150 | zio_t *rio; | |
2151 | spa_load_error_t sle = { 0 }; | |
8a393be3 | 2152 | zpool_load_policy_t policy; |
428870ff | 2153 | boolean_t verify_ok = B_FALSE; |
dea377c0 | 2154 | int error = 0; |
34dc7c2f | 2155 | |
8a393be3 | 2156 | zpool_get_load_policy(spa->spa_config, &policy); |
34dc7c2f | 2157 | |
8a393be3 | 2158 | if (policy.zlp_rewind & ZPOOL_NEVER_REWIND) |
428870ff | 2159 | return (0); |
34dc7c2f | 2160 | |
d1d19c78 PD |
2161 | dsl_pool_config_enter(spa->spa_dsl_pool, FTAG); |
2162 | error = dmu_objset_find_dp(spa->spa_dsl_pool, | |
2163 | spa->spa_dsl_pool->dp_root_dir_obj, verify_dataset_name_len, NULL, | |
2164 | DS_FIND_CHILDREN); | |
2165 | dsl_pool_config_exit(spa->spa_dsl_pool, FTAG); | |
2166 | if (error != 0) | |
2167 | return (error); | |
2168 | ||
428870ff BB |
2169 | rio = zio_root(spa, NULL, &sle, |
2170 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
34dc7c2f | 2171 | |
dea377c0 | 2172 | if (spa_load_verify_metadata) { |
4a0ee12a PZ |
2173 | if (spa->spa_extreme_rewind) { |
2174 | spa_load_note(spa, "performing a complete scan of the " | |
2175 | "pool since extreme rewind is on. This may take " | |
2176 | "a very long time.\n (spa_load_verify_data=%u, " | |
2177 | "spa_load_verify_metadata=%u)", | |
2178 | spa_load_verify_data, spa_load_verify_metadata); | |
2179 | } | |
dea377c0 | 2180 | error = traverse_pool(spa, spa->spa_verify_min_txg, |
b5256303 TC |
2181 | TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | |
2182 | TRAVERSE_NO_DECRYPT, spa_load_verify_cb, rio); | |
dea377c0 | 2183 | } |
428870ff BB |
2184 | |
2185 | (void) zio_wait(rio); | |
2186 | ||
2187 | spa->spa_load_meta_errors = sle.sle_meta_count; | |
2188 | spa->spa_load_data_errors = sle.sle_data_count; | |
2189 | ||
afd2f7b7 PZ |
2190 | if (sle.sle_meta_count != 0 || sle.sle_data_count != 0) { |
2191 | spa_load_note(spa, "spa_load_verify found %llu metadata errors " | |
2192 | "and %llu data errors", (u_longlong_t)sle.sle_meta_count, | |
2193 | (u_longlong_t)sle.sle_data_count); | |
2194 | } | |
2195 | ||
2196 | if (spa_load_verify_dryrun || | |
8a393be3 PZ |
2197 | (!error && sle.sle_meta_count <= policy.zlp_maxmeta && |
2198 | sle.sle_data_count <= policy.zlp_maxdata)) { | |
572e2857 BB |
2199 | int64_t loss = 0; |
2200 | ||
428870ff BB |
2201 | verify_ok = B_TRUE; |
2202 | spa->spa_load_txg = spa->spa_uberblock.ub_txg; | |
2203 | spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp; | |
572e2857 BB |
2204 | |
2205 | loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts; | |
2206 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
2207 | ZPOOL_CONFIG_LOAD_TIME, spa->spa_load_txg_ts) == 0); | |
2208 | VERIFY(nvlist_add_int64(spa->spa_load_info, | |
2209 | ZPOOL_CONFIG_REWIND_TIME, loss) == 0); | |
2210 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
2211 | ZPOOL_CONFIG_LOAD_DATA_ERRORS, sle.sle_data_count) == 0); | |
428870ff BB |
2212 | } else { |
2213 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; | |
2214 | } | |
2215 | ||
afd2f7b7 PZ |
2216 | if (spa_load_verify_dryrun) |
2217 | return (0); | |
2218 | ||
428870ff BB |
2219 | if (error) { |
2220 | if (error != ENXIO && error != EIO) | |
2e528b49 | 2221 | error = SET_ERROR(EIO); |
428870ff BB |
2222 | return (error); |
2223 | } | |
2224 | ||
2225 | return (verify_ok ? 0 : EIO); | |
2226 | } | |
2227 | ||
2228 | /* | |
2229 | * Find a value in the pool props object. | |
2230 | */ | |
2231 | static void | |
2232 | spa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val) | |
2233 | { | |
2234 | (void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object, | |
2235 | zpool_prop_to_name(prop), sizeof (uint64_t), 1, val); | |
2236 | } | |
2237 | ||
2238 | /* | |
2239 | * Find a value in the pool directory object. | |
2240 | */ | |
2241 | static int | |
4a0ee12a | 2242 | spa_dir_prop(spa_t *spa, const char *name, uint64_t *val, boolean_t log_enoent) |
428870ff | 2243 | { |
4a0ee12a PZ |
2244 | int error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, |
2245 | name, sizeof (uint64_t), 1, val); | |
2246 | ||
2247 | if (error != 0 && (error != ENOENT || log_enoent)) { | |
2248 | spa_load_failed(spa, "couldn't get '%s' value in MOS directory " | |
2249 | "[error=%d]", name, error); | |
2250 | } | |
2251 | ||
2252 | return (error); | |
428870ff BB |
2253 | } |
2254 | ||
2255 | static int | |
2256 | spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err) | |
2257 | { | |
2258 | vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux); | |
a1d477c2 | 2259 | return (SET_ERROR(err)); |
428870ff BB |
2260 | } |
2261 | ||
9d5b5245 SD |
2262 | static void |
2263 | spa_spawn_aux_threads(spa_t *spa) | |
2264 | { | |
2265 | ASSERT(spa_writeable(spa)); | |
2266 | ||
2267 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
2268 | ||
2269 | spa_start_indirect_condensing_thread(spa); | |
d2734cce SD |
2270 | |
2271 | ASSERT3P(spa->spa_checkpoint_discard_zthr, ==, NULL); | |
2272 | spa->spa_checkpoint_discard_zthr = | |
2273 | zthr_create(spa_checkpoint_discard_thread_check, | |
2274 | spa_checkpoint_discard_thread, spa); | |
9d5b5245 SD |
2275 | } |
2276 | ||
428870ff BB |
2277 | /* |
2278 | * Fix up config after a partly-completed split. This is done with the | |
2279 | * ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off | |
2280 | * pool have that entry in their config, but only the splitting one contains | |
2281 | * a list of all the guids of the vdevs that are being split off. | |
2282 | * | |
2283 | * This function determines what to do with that list: either rejoin | |
2284 | * all the disks to the pool, or complete the splitting process. To attempt | |
2285 | * the rejoin, each disk that is offlined is marked online again, and | |
2286 | * we do a reopen() call. If the vdev label for every disk that was | |
2287 | * marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL) | |
2288 | * then we call vdev_split() on each disk, and complete the split. | |
2289 | * | |
2290 | * Otherwise we leave the config alone, with all the vdevs in place in | |
2291 | * the original pool. | |
2292 | */ | |
2293 | static void | |
2294 | spa_try_repair(spa_t *spa, nvlist_t *config) | |
2295 | { | |
2296 | uint_t extracted; | |
2297 | uint64_t *glist; | |
2298 | uint_t i, gcount; | |
2299 | nvlist_t *nvl; | |
2300 | vdev_t **vd; | |
2301 | boolean_t attempt_reopen; | |
2302 | ||
2303 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0) | |
2304 | return; | |
2305 | ||
2306 | /* check that the config is complete */ | |
2307 | if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, | |
2308 | &glist, &gcount) != 0) | |
2309 | return; | |
2310 | ||
79c76d5b | 2311 | vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_SLEEP); |
428870ff BB |
2312 | |
2313 | /* attempt to online all the vdevs & validate */ | |
2314 | attempt_reopen = B_TRUE; | |
2315 | for (i = 0; i < gcount; i++) { | |
2316 | if (glist[i] == 0) /* vdev is hole */ | |
2317 | continue; | |
2318 | ||
2319 | vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE); | |
2320 | if (vd[i] == NULL) { | |
2321 | /* | |
2322 | * Don't bother attempting to reopen the disks; | |
2323 | * just do the split. | |
2324 | */ | |
2325 | attempt_reopen = B_FALSE; | |
2326 | } else { | |
2327 | /* attempt to re-online it */ | |
2328 | vd[i]->vdev_offline = B_FALSE; | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | if (attempt_reopen) { | |
2333 | vdev_reopen(spa->spa_root_vdev); | |
2334 | ||
2335 | /* check each device to see what state it's in */ | |
2336 | for (extracted = 0, i = 0; i < gcount; i++) { | |
2337 | if (vd[i] != NULL && | |
2338 | vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL) | |
2339 | break; | |
2340 | ++extracted; | |
2341 | } | |
2342 | } | |
2343 | ||
2344 | /* | |
2345 | * If every disk has been moved to the new pool, or if we never | |
2346 | * even attempted to look at them, then we split them off for | |
2347 | * good. | |
2348 | */ | |
2349 | if (!attempt_reopen || gcount == extracted) { | |
2350 | for (i = 0; i < gcount; i++) | |
2351 | if (vd[i] != NULL) | |
2352 | vdev_split(vd[i]); | |
2353 | vdev_reopen(spa->spa_root_vdev); | |
2354 | } | |
2355 | ||
2356 | kmem_free(vd, gcount * sizeof (vdev_t *)); | |
2357 | } | |
2358 | ||
2359 | static int | |
6cb8e530 | 2360 | spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type) |
428870ff | 2361 | { |
428870ff BB |
2362 | char *ereport = FM_EREPORT_ZFS_POOL; |
2363 | int error; | |
428870ff | 2364 | |
6cb8e530 | 2365 | spa->spa_load_state = state; |
9ae529ec | 2366 | |
6cb8e530 | 2367 | gethrestime(&spa->spa_loaded_ts); |
d2734cce | 2368 | error = spa_load_impl(spa, type, &ereport); |
428870ff | 2369 | |
0c66c32d JG |
2370 | /* |
2371 | * Don't count references from objsets that are already closed | |
2372 | * and are making their way through the eviction process. | |
2373 | */ | |
2374 | spa_evicting_os_wait(spa); | |
424fd7c3 | 2375 | spa->spa_minref = zfs_refcount_count(&spa->spa_refcount); |
572e2857 BB |
2376 | if (error) { |
2377 | if (error != EEXIST) { | |
2378 | spa->spa_loaded_ts.tv_sec = 0; | |
2379 | spa->spa_loaded_ts.tv_nsec = 0; | |
2380 | } | |
2381 | if (error != EBADF) { | |
b5256303 | 2382 | zfs_ereport_post(ereport, spa, NULL, NULL, NULL, 0, 0); |
572e2857 BB |
2383 | } |
2384 | } | |
428870ff BB |
2385 | spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE; |
2386 | spa->spa_ena = 0; | |
2387 | ||
2388 | return (error); | |
2389 | } | |
2390 | ||
33cf67cd | 2391 | #ifdef ZFS_DEBUG |
e0ab3ab5 JS |
2392 | /* |
2393 | * Count the number of per-vdev ZAPs associated with all of the vdevs in the | |
2394 | * vdev tree rooted in the given vd, and ensure that each ZAP is present in the | |
2395 | * spa's per-vdev ZAP list. | |
2396 | */ | |
2397 | static uint64_t | |
2398 | vdev_count_verify_zaps(vdev_t *vd) | |
2399 | { | |
2400 | spa_t *spa = vd->vdev_spa; | |
2401 | uint64_t total = 0; | |
e0ab3ab5 JS |
2402 | |
2403 | if (vd->vdev_top_zap != 0) { | |
2404 | total++; | |
2405 | ASSERT0(zap_lookup_int(spa->spa_meta_objset, | |
2406 | spa->spa_all_vdev_zaps, vd->vdev_top_zap)); | |
2407 | } | |
2408 | if (vd->vdev_leaf_zap != 0) { | |
2409 | total++; | |
2410 | ASSERT0(zap_lookup_int(spa->spa_meta_objset, | |
2411 | spa->spa_all_vdev_zaps, vd->vdev_leaf_zap)); | |
2412 | } | |
2413 | ||
1c27024e | 2414 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
2415 | total += vdev_count_verify_zaps(vd->vdev_child[i]); |
2416 | } | |
2417 | ||
2418 | return (total); | |
2419 | } | |
33cf67cd | 2420 | #endif |
e0ab3ab5 | 2421 | |
379ca9cf OF |
2422 | /* |
2423 | * Determine whether the activity check is required. | |
2424 | */ | |
2425 | static boolean_t | |
bbffb59e BB |
2426 | spa_activity_check_required(spa_t *spa, uberblock_t *ub, nvlist_t *label, |
2427 | nvlist_t *config) | |
379ca9cf OF |
2428 | { |
2429 | uint64_t state = 0; | |
2430 | uint64_t hostid = 0; | |
2431 | uint64_t tryconfig_txg = 0; | |
2432 | uint64_t tryconfig_timestamp = 0; | |
2433 | nvlist_t *nvinfo; | |
2434 | ||
2435 | if (nvlist_exists(config, ZPOOL_CONFIG_LOAD_INFO)) { | |
2436 | nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO); | |
2437 | (void) nvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_MMP_TXG, | |
2438 | &tryconfig_txg); | |
2439 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
2440 | &tryconfig_timestamp); | |
2441 | } | |
2442 | ||
2443 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE, &state); | |
379ca9cf OF |
2444 | |
2445 | /* | |
2446 | * Disable the MMP activity check - This is used by zdb which | |
2447 | * is intended to be used on potentially active pools. | |
2448 | */ | |
2449 | if (spa->spa_import_flags & ZFS_IMPORT_SKIP_MMP) | |
2450 | return (B_FALSE); | |
2451 | ||
2452 | /* | |
2453 | * Skip the activity check when the MMP feature is disabled. | |
2454 | */ | |
2455 | if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay == 0) | |
2456 | return (B_FALSE); | |
2457 | /* | |
2458 | * If the tryconfig_* values are nonzero, they are the results of an | |
2459 | * earlier tryimport. If they match the uberblock we just found, then | |
2460 | * the pool has not changed and we return false so we do not test a | |
2461 | * second time. | |
2462 | */ | |
2463 | if (tryconfig_txg && tryconfig_txg == ub->ub_txg && | |
2464 | tryconfig_timestamp && tryconfig_timestamp == ub->ub_timestamp) | |
2465 | return (B_FALSE); | |
2466 | ||
2467 | /* | |
2468 | * Allow the activity check to be skipped when importing the pool | |
bbffb59e BB |
2469 | * on the same host which last imported it. Since the hostid from |
2470 | * configuration may be stale use the one read from the label. | |
379ca9cf | 2471 | */ |
bbffb59e BB |
2472 | if (nvlist_exists(label, ZPOOL_CONFIG_HOSTID)) |
2473 | hostid = fnvlist_lookup_uint64(label, ZPOOL_CONFIG_HOSTID); | |
2474 | ||
379ca9cf OF |
2475 | if (hostid == spa_get_hostid()) |
2476 | return (B_FALSE); | |
2477 | ||
2478 | /* | |
2479 | * Skip the activity test when the pool was cleanly exported. | |
2480 | */ | |
2481 | if (state != POOL_STATE_ACTIVE) | |
2482 | return (B_FALSE); | |
2483 | ||
2484 | return (B_TRUE); | |
2485 | } | |
2486 | ||
2487 | /* | |
2488 | * Perform the import activity check. If the user canceled the import or | |
2489 | * we detected activity then fail. | |
2490 | */ | |
2491 | static int | |
2492 | spa_activity_check(spa_t *spa, uberblock_t *ub, nvlist_t *config) | |
2493 | { | |
2494 | uint64_t import_intervals = MAX(zfs_multihost_import_intervals, 1); | |
2495 | uint64_t txg = ub->ub_txg; | |
2496 | uint64_t timestamp = ub->ub_timestamp; | |
2497 | uint64_t import_delay = NANOSEC; | |
2498 | hrtime_t import_expire; | |
2499 | nvlist_t *mmp_label = NULL; | |
2500 | vdev_t *rvd = spa->spa_root_vdev; | |
2501 | kcondvar_t cv; | |
2502 | kmutex_t mtx; | |
2503 | int error = 0; | |
2504 | ||
2505 | cv_init(&cv, NULL, CV_DEFAULT, NULL); | |
2506 | mutex_init(&mtx, NULL, MUTEX_DEFAULT, NULL); | |
2507 | mutex_enter(&mtx); | |
2508 | ||
2509 | /* | |
2510 | * If ZPOOL_CONFIG_MMP_TXG is present an activity check was performed | |
2511 | * during the earlier tryimport. If the txg recorded there is 0 then | |
2512 | * the pool is known to be active on another host. | |
2513 | * | |
2514 | * Otherwise, the pool might be in use on another node. Check for | |
2515 | * changes in the uberblocks on disk if necessary. | |
2516 | */ | |
2517 | if (nvlist_exists(config, ZPOOL_CONFIG_LOAD_INFO)) { | |
2518 | nvlist_t *nvinfo = fnvlist_lookup_nvlist(config, | |
2519 | ZPOOL_CONFIG_LOAD_INFO); | |
2520 | ||
2521 | if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_TXG) && | |
2522 | fnvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_MMP_TXG) == 0) { | |
2523 | vdev_uberblock_load(rvd, ub, &mmp_label); | |
2524 | error = SET_ERROR(EREMOTEIO); | |
2525 | goto out; | |
2526 | } | |
2527 | } | |
2528 | ||
2529 | /* | |
2530 | * Preferentially use the zfs_multihost_interval from the node which | |
2531 | * last imported the pool. This value is stored in an MMP uberblock as. | |
2532 | * | |
2533 | * ub_mmp_delay * vdev_count_leaves() == zfs_multihost_interval | |
2534 | */ | |
2535 | if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay) | |
2536 | import_delay = MAX(import_delay, import_intervals * | |
802ae562 | 2537 | ub->ub_mmp_delay * MAX(vdev_count_leaves(spa), 1)); |
379ca9cf OF |
2538 | |
2539 | /* Apply a floor using the local default values. */ | |
2540 | import_delay = MAX(import_delay, import_intervals * | |
2541 | MSEC2NSEC(MAX(zfs_multihost_interval, MMP_MIN_INTERVAL))); | |
2542 | ||
533ea041 OF |
2543 | zfs_dbgmsg("import_delay=%llu ub_mmp_delay=%llu import_intervals=%u " |
2544 | "leaves=%u", import_delay, ub->ub_mmp_delay, import_intervals, | |
2545 | vdev_count_leaves(spa)); | |
2546 | ||
379ca9cf OF |
2547 | /* Add a small random factor in case of simultaneous imports (0-25%) */ |
2548 | import_expire = gethrtime() + import_delay + | |
2549 | (import_delay * spa_get_random(250) / 1000); | |
2550 | ||
2551 | while (gethrtime() < import_expire) { | |
2552 | vdev_uberblock_load(rvd, ub, &mmp_label); | |
2553 | ||
2554 | if (txg != ub->ub_txg || timestamp != ub->ub_timestamp) { | |
2555 | error = SET_ERROR(EREMOTEIO); | |
2556 | break; | |
2557 | } | |
2558 | ||
2559 | if (mmp_label) { | |
2560 | nvlist_free(mmp_label); | |
2561 | mmp_label = NULL; | |
2562 | } | |
2563 | ||
2564 | error = cv_timedwait_sig(&cv, &mtx, ddi_get_lbolt() + hz); | |
2565 | if (error != -1) { | |
2566 | error = SET_ERROR(EINTR); | |
2567 | break; | |
2568 | } | |
2569 | error = 0; | |
2570 | } | |
2571 | ||
2572 | out: | |
2573 | mutex_exit(&mtx); | |
2574 | mutex_destroy(&mtx); | |
2575 | cv_destroy(&cv); | |
2576 | ||
2577 | /* | |
2578 | * If the pool is determined to be active store the status in the | |
2579 | * spa->spa_load_info nvlist. If the remote hostname or hostid are | |
2580 | * available from configuration read from disk store them as well. | |
2581 | * This allows 'zpool import' to generate a more useful message. | |
2582 | * | |
2583 | * ZPOOL_CONFIG_MMP_STATE - observed pool status (mandatory) | |
2584 | * ZPOOL_CONFIG_MMP_HOSTNAME - hostname from the active pool | |
2585 | * ZPOOL_CONFIG_MMP_HOSTID - hostid from the active pool | |
2586 | */ | |
2587 | if (error == EREMOTEIO) { | |
2588 | char *hostname = "<unknown>"; | |
2589 | uint64_t hostid = 0; | |
2590 | ||
2591 | if (mmp_label) { | |
2592 | if (nvlist_exists(mmp_label, ZPOOL_CONFIG_HOSTNAME)) { | |
2593 | hostname = fnvlist_lookup_string(mmp_label, | |
2594 | ZPOOL_CONFIG_HOSTNAME); | |
2595 | fnvlist_add_string(spa->spa_load_info, | |
2596 | ZPOOL_CONFIG_MMP_HOSTNAME, hostname); | |
2597 | } | |
2598 | ||
2599 | if (nvlist_exists(mmp_label, ZPOOL_CONFIG_HOSTID)) { | |
2600 | hostid = fnvlist_lookup_uint64(mmp_label, | |
2601 | ZPOOL_CONFIG_HOSTID); | |
2602 | fnvlist_add_uint64(spa->spa_load_info, | |
2603 | ZPOOL_CONFIG_MMP_HOSTID, hostid); | |
2604 | } | |
2605 | } | |
2606 | ||
2607 | fnvlist_add_uint64(spa->spa_load_info, | |
2608 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_ACTIVE); | |
2609 | fnvlist_add_uint64(spa->spa_load_info, | |
2610 | ZPOOL_CONFIG_MMP_TXG, 0); | |
2611 | ||
2612 | error = spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO); | |
2613 | } | |
2614 | ||
2615 | if (mmp_label) | |
2616 | nvlist_free(mmp_label); | |
2617 | ||
2618 | return (error); | |
2619 | } | |
2620 | ||
9eb7b46e | 2621 | static int |
6cb8e530 PZ |
2622 | spa_verify_host(spa_t *spa, nvlist_t *mos_config) |
2623 | { | |
2624 | uint64_t hostid; | |
2625 | char *hostname; | |
2626 | uint64_t myhostid = 0; | |
2627 | ||
2628 | if (!spa_is_root(spa) && nvlist_lookup_uint64(mos_config, | |
2629 | ZPOOL_CONFIG_HOSTID, &hostid) == 0) { | |
2630 | hostname = fnvlist_lookup_string(mos_config, | |
2631 | ZPOOL_CONFIG_HOSTNAME); | |
2632 | ||
2633 | myhostid = zone_get_hostid(NULL); | |
2634 | ||
2635 | if (hostid != 0 && myhostid != 0 && hostid != myhostid) { | |
2636 | cmn_err(CE_WARN, "pool '%s' could not be " | |
2637 | "loaded as it was last accessed by " | |
2638 | "another system (host: %s hostid: 0x%llx). " | |
2639 | "See: http://illumos.org/msg/ZFS-8000-EY", | |
2640 | spa_name(spa), hostname, (u_longlong_t)hostid); | |
2641 | spa_load_failed(spa, "hostid verification failed: pool " | |
2642 | "last accessed by host: %s (hostid: 0x%llx)", | |
2643 | hostname, (u_longlong_t)hostid); | |
2644 | return (SET_ERROR(EBADF)); | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | return (0); | |
2649 | } | |
2650 | ||
2651 | static int | |
2652 | spa_ld_parse_config(spa_t *spa, spa_import_type_t type) | |
428870ff BB |
2653 | { |
2654 | int error = 0; | |
6cb8e530 | 2655 | nvlist_t *nvtree, *nvl, *config = spa->spa_config; |
1c27024e | 2656 | int parse; |
9eb7b46e | 2657 | vdev_t *rvd; |
6cb8e530 PZ |
2658 | uint64_t pool_guid; |
2659 | char *comment; | |
2660 | ||
2661 | /* | |
2662 | * Versioning wasn't explicitly added to the label until later, so if | |
2663 | * it's not present treat it as the initial version. | |
2664 | */ | |
2665 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, | |
2666 | &spa->spa_ubsync.ub_version) != 0) | |
2667 | spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; | |
2668 | ||
2669 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { | |
2670 | spa_load_failed(spa, "invalid config provided: '%s' missing", | |
2671 | ZPOOL_CONFIG_POOL_GUID); | |
2672 | return (SET_ERROR(EINVAL)); | |
2673 | } | |
2674 | ||
d2734cce SD |
2675 | /* |
2676 | * If we are doing an import, ensure that the pool is not already | |
2677 | * imported by checking if its pool guid already exists in the | |
2678 | * spa namespace. | |
2679 | * | |
2680 | * The only case that we allow an already imported pool to be | |
2681 | * imported again, is when the pool is checkpointed and we want to | |
2682 | * look at its checkpointed state from userland tools like zdb. | |
2683 | */ | |
2684 | #ifdef _KERNEL | |
2685 | if ((spa->spa_load_state == SPA_LOAD_IMPORT || | |
2686 | spa->spa_load_state == SPA_LOAD_TRYIMPORT) && | |
2687 | spa_guid_exists(pool_guid, 0)) { | |
2688 | #else | |
2689 | if ((spa->spa_load_state == SPA_LOAD_IMPORT || | |
2690 | spa->spa_load_state == SPA_LOAD_TRYIMPORT) && | |
2691 | spa_guid_exists(pool_guid, 0) && | |
2692 | !spa_importing_readonly_checkpoint(spa)) { | |
2693 | #endif | |
6cb8e530 PZ |
2694 | spa_load_failed(spa, "a pool with guid %llu is already open", |
2695 | (u_longlong_t)pool_guid); | |
2696 | return (SET_ERROR(EEXIST)); | |
2697 | } | |
2698 | ||
2699 | spa->spa_config_guid = pool_guid; | |
2700 | ||
2701 | nvlist_free(spa->spa_load_info); | |
2702 | spa->spa_load_info = fnvlist_alloc(); | |
2703 | ||
2704 | ASSERT(spa->spa_comment == NULL); | |
2705 | if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0) | |
2706 | spa->spa_comment = spa_strdup(comment); | |
2707 | ||
2708 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
2709 | &spa->spa_config_txg); | |
2710 | ||
2711 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) == 0) | |
2712 | spa->spa_config_splitting = fnvlist_dup(nvl); | |
428870ff | 2713 | |
4a0ee12a PZ |
2714 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvtree)) { |
2715 | spa_load_failed(spa, "invalid config provided: '%s' missing", | |
2716 | ZPOOL_CONFIG_VDEV_TREE); | |
2e528b49 | 2717 | return (SET_ERROR(EINVAL)); |
4a0ee12a | 2718 | } |
428870ff | 2719 | |
428870ff BB |
2720 | /* |
2721 | * Create "The Godfather" zio to hold all async IOs | |
2722 | */ | |
e022864d MA |
2723 | spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *), |
2724 | KM_SLEEP); | |
1c27024e | 2725 | for (int i = 0; i < max_ncpus; i++) { |
e022864d MA |
2726 | spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, |
2727 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | | |
2728 | ZIO_FLAG_GODFATHER); | |
2729 | } | |
428870ff BB |
2730 | |
2731 | /* | |
2732 | * Parse the configuration into a vdev tree. We explicitly set the | |
2733 | * value that will be returned by spa_version() since parsing the | |
2734 | * configuration requires knowing the version number. | |
2735 | */ | |
2736 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
6cb8e530 PZ |
2737 | parse = (type == SPA_IMPORT_EXISTING ? |
2738 | VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT); | |
9eb7b46e | 2739 | error = spa_config_parse(spa, &rvd, nvtree, NULL, 0, parse); |
428870ff BB |
2740 | spa_config_exit(spa, SCL_ALL, FTAG); |
2741 | ||
4a0ee12a PZ |
2742 | if (error != 0) { |
2743 | spa_load_failed(spa, "unable to parse config [error=%d]", | |
2744 | error); | |
428870ff | 2745 | return (error); |
4a0ee12a | 2746 | } |
428870ff BB |
2747 | |
2748 | ASSERT(spa->spa_root_vdev == rvd); | |
c3520e7f MA |
2749 | ASSERT3U(spa->spa_min_ashift, >=, SPA_MINBLOCKSHIFT); |
2750 | ASSERT3U(spa->spa_max_ashift, <=, SPA_MAXBLOCKSHIFT); | |
428870ff BB |
2751 | |
2752 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2753 | ASSERT(spa_guid(spa) == pool_guid); | |
2754 | } | |
2755 | ||
9eb7b46e PZ |
2756 | return (0); |
2757 | } | |
2758 | ||
6cb8e530 PZ |
2759 | /* |
2760 | * Recursively open all vdevs in the vdev tree. This function is called twice: | |
2761 | * first with the untrusted config, then with the trusted config. | |
2762 | */ | |
9eb7b46e PZ |
2763 | static int |
2764 | spa_ld_open_vdevs(spa_t *spa) | |
2765 | { | |
2766 | int error = 0; | |
2767 | ||
6cb8e530 PZ |
2768 | /* |
2769 | * spa_missing_tvds_allowed defines how many top-level vdevs can be | |
2770 | * missing/unopenable for the root vdev to be still considered openable. | |
2771 | */ | |
2772 | if (spa->spa_trust_config) { | |
2773 | spa->spa_missing_tvds_allowed = zfs_max_missing_tvds; | |
2774 | } else if (spa->spa_config_source == SPA_CONFIG_SRC_CACHEFILE) { | |
2775 | spa->spa_missing_tvds_allowed = zfs_max_missing_tvds_cachefile; | |
2776 | } else if (spa->spa_config_source == SPA_CONFIG_SRC_SCAN) { | |
2777 | spa->spa_missing_tvds_allowed = zfs_max_missing_tvds_scan; | |
2778 | } else { | |
2779 | spa->spa_missing_tvds_allowed = 0; | |
2780 | } | |
2781 | ||
2782 | spa->spa_missing_tvds_allowed = | |
2783 | MAX(zfs_max_missing_tvds, spa->spa_missing_tvds_allowed); | |
2784 | ||
428870ff | 2785 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
9eb7b46e | 2786 | error = vdev_open(spa->spa_root_vdev); |
428870ff | 2787 | spa_config_exit(spa, SCL_ALL, FTAG); |
6cb8e530 PZ |
2788 | |
2789 | if (spa->spa_missing_tvds != 0) { | |
2790 | spa_load_note(spa, "vdev tree has %lld missing top-level " | |
2791 | "vdevs.", (u_longlong_t)spa->spa_missing_tvds); | |
2792 | if (spa->spa_trust_config && (spa->spa_mode & FWRITE)) { | |
2793 | /* | |
2794 | * Although theoretically we could allow users to open | |
2795 | * incomplete pools in RW mode, we'd need to add a lot | |
2796 | * of extra logic (e.g. adjust pool space to account | |
2797 | * for missing vdevs). | |
2798 | * This limitation also prevents users from accidentally | |
2799 | * opening the pool in RW mode during data recovery and | |
2800 | * damaging it further. | |
2801 | */ | |
2802 | spa_load_note(spa, "pools with missing top-level " | |
2803 | "vdevs can only be opened in read-only mode."); | |
2804 | error = SET_ERROR(ENXIO); | |
2805 | } else { | |
2806 | spa_load_note(spa, "current settings allow for maximum " | |
2807 | "%lld missing top-level vdevs at this stage.", | |
2808 | (u_longlong_t)spa->spa_missing_tvds_allowed); | |
2809 | } | |
2810 | } | |
4a0ee12a PZ |
2811 | if (error != 0) { |
2812 | spa_load_failed(spa, "unable to open vdev tree [error=%d]", | |
2813 | error); | |
2814 | } | |
6cb8e530 PZ |
2815 | if (spa->spa_missing_tvds != 0 || error != 0) |
2816 | vdev_dbgmsg_print_tree(spa->spa_root_vdev, 2); | |
9eb7b46e PZ |
2817 | |
2818 | return (error); | |
2819 | } | |
2820 | ||
6cb8e530 PZ |
2821 | /* |
2822 | * We need to validate the vdev labels against the configuration that | |
2823 | * we have in hand. This function is called twice: first with an untrusted | |
2824 | * config, then with a trusted config. The validation is more strict when the | |
2825 | * config is trusted. | |
2826 | */ | |
9eb7b46e | 2827 | static int |
6cb8e530 | 2828 | spa_ld_validate_vdevs(spa_t *spa) |
9eb7b46e PZ |
2829 | { |
2830 | int error = 0; | |
2831 | vdev_t *rvd = spa->spa_root_vdev; | |
428870ff | 2832 | |
6cb8e530 PZ |
2833 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
2834 | error = vdev_validate(rvd); | |
2835 | spa_config_exit(spa, SCL_ALL, FTAG); | |
428870ff | 2836 | |
6cb8e530 PZ |
2837 | if (error != 0) { |
2838 | spa_load_failed(spa, "vdev_validate failed [error=%d]", error); | |
2839 | return (error); | |
2840 | } | |
428870ff | 2841 | |
6cb8e530 PZ |
2842 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
2843 | spa_load_failed(spa, "cannot open vdev tree after invalidating " | |
2844 | "some vdevs"); | |
2845 | vdev_dbgmsg_print_tree(rvd, 2); | |
2846 | return (SET_ERROR(ENXIO)); | |
428870ff BB |
2847 | } |
2848 | ||
9eb7b46e PZ |
2849 | return (0); |
2850 | } | |
2851 | ||
d2734cce SD |
2852 | static void |
2853 | spa_ld_select_uberblock_done(spa_t *spa, uberblock_t *ub) | |
2854 | { | |
2855 | spa->spa_state = POOL_STATE_ACTIVE; | |
2856 | spa->spa_ubsync = spa->spa_uberblock; | |
2857 | spa->spa_verify_min_txg = spa->spa_extreme_rewind ? | |
2858 | TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1; | |
2859 | spa->spa_first_txg = spa->spa_last_ubsync_txg ? | |
2860 | spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1; | |
2861 | spa->spa_claim_max_txg = spa->spa_first_txg; | |
2862 | spa->spa_prev_software_version = ub->ub_software_version; | |
2863 | } | |
2864 | ||
9eb7b46e | 2865 | static int |
6cb8e530 | 2866 | spa_ld_select_uberblock(spa_t *spa, spa_import_type_t type) |
9eb7b46e PZ |
2867 | { |
2868 | vdev_t *rvd = spa->spa_root_vdev; | |
2869 | nvlist_t *label; | |
2870 | uberblock_t *ub = &spa->spa_uberblock; | |
9eb7b46e PZ |
2871 | boolean_t activity_check = B_FALSE; |
2872 | ||
d2734cce SD |
2873 | /* |
2874 | * If we are opening the checkpointed state of the pool by | |
2875 | * rewinding to it, at this point we will have written the | |
2876 | * checkpointed uberblock to the vdev labels, so searching | |
2877 | * the labels will find the right uberblock. However, if | |
2878 | * we are opening the checkpointed state read-only, we have | |
2879 | * not modified the labels. Therefore, we must ignore the | |
2880 | * labels and continue using the spa_uberblock that was set | |
2881 | * by spa_ld_checkpoint_rewind. | |
2882 | * | |
2883 | * Note that it would be fine to ignore the labels when | |
2884 | * rewinding (opening writeable) as well. However, if we | |
2885 | * crash just after writing the labels, we will end up | |
2886 | * searching the labels. Doing so in the common case means | |
2887 | * that this code path gets exercised normally, rather than | |
2888 | * just in the edge case. | |
2889 | */ | |
2890 | if (ub->ub_checkpoint_txg != 0 && | |
2891 | spa_importing_readonly_checkpoint(spa)) { | |
2892 | spa_ld_select_uberblock_done(spa, ub); | |
2893 | return (0); | |
2894 | } | |
2895 | ||
428870ff BB |
2896 | /* |
2897 | * Find the best uberblock. | |
2898 | */ | |
9ae529ec | 2899 | vdev_uberblock_load(rvd, ub, &label); |
428870ff BB |
2900 | |
2901 | /* | |
2902 | * If we weren't able to find a single valid uberblock, return failure. | |
2903 | */ | |
9ae529ec CS |
2904 | if (ub->ub_txg == 0) { |
2905 | nvlist_free(label); | |
4a0ee12a | 2906 | spa_load_failed(spa, "no valid uberblock found"); |
428870ff | 2907 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO)); |
9ae529ec | 2908 | } |
428870ff | 2909 | |
4a0ee12a PZ |
2910 | spa_load_note(spa, "using uberblock with txg=%llu", |
2911 | (u_longlong_t)ub->ub_txg); | |
2912 | ||
2913 | ||
379ca9cf OF |
2914 | /* |
2915 | * For pools which have the multihost property on determine if the | |
2916 | * pool is truly inactive and can be safely imported. Prevent | |
2917 | * hosts which don't have a hostid set from importing the pool. | |
2918 | */ | |
6cb8e530 PZ |
2919 | activity_check = spa_activity_check_required(spa, ub, label, |
2920 | spa->spa_config); | |
379ca9cf | 2921 | if (activity_check) { |
379ca9cf OF |
2922 | if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay && |
2923 | spa_get_hostid() == 0) { | |
2924 | nvlist_free(label); | |
2925 | fnvlist_add_uint64(spa->spa_load_info, | |
2926 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_NO_HOSTID); | |
2927 | return (spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO)); | |
2928 | } | |
2929 | ||
6cb8e530 | 2930 | int error = spa_activity_check(spa, ub, spa->spa_config); |
e889f0f5 OF |
2931 | if (error) { |
2932 | nvlist_free(label); | |
2933 | return (error); | |
2934 | } | |
2935 | ||
379ca9cf OF |
2936 | fnvlist_add_uint64(spa->spa_load_info, |
2937 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_INACTIVE); | |
2938 | fnvlist_add_uint64(spa->spa_load_info, | |
2939 | ZPOOL_CONFIG_MMP_TXG, ub->ub_txg); | |
2940 | } | |
2941 | ||
428870ff | 2942 | /* |
9ae529ec | 2943 | * If the pool has an unsupported version we can't open it. |
428870ff | 2944 | */ |
9ae529ec CS |
2945 | if (!SPA_VERSION_IS_SUPPORTED(ub->ub_version)) { |
2946 | nvlist_free(label); | |
4a0ee12a PZ |
2947 | spa_load_failed(spa, "version %llu is not supported", |
2948 | (u_longlong_t)ub->ub_version); | |
428870ff | 2949 | return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP)); |
9ae529ec CS |
2950 | } |
2951 | ||
2952 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
2953 | nvlist_t *features; | |
2954 | ||
2955 | /* | |
2956 | * If we weren't able to find what's necessary for reading the | |
2957 | * MOS in the label, return failure. | |
2958 | */ | |
4a0ee12a PZ |
2959 | if (label == NULL) { |
2960 | spa_load_failed(spa, "label config unavailable"); | |
2961 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, | |
2962 | ENXIO)); | |
2963 | } | |
2964 | ||
2965 | if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_FEATURES_FOR_READ, | |
2966 | &features) != 0) { | |
9ae529ec | 2967 | nvlist_free(label); |
4a0ee12a PZ |
2968 | spa_load_failed(spa, "invalid label: '%s' missing", |
2969 | ZPOOL_CONFIG_FEATURES_FOR_READ); | |
9ae529ec CS |
2970 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, |
2971 | ENXIO)); | |
2972 | } | |
2973 | ||
2974 | /* | |
2975 | * Update our in-core representation with the definitive values | |
2976 | * from the label. | |
2977 | */ | |
2978 | nvlist_free(spa->spa_label_features); | |
2979 | VERIFY(nvlist_dup(features, &spa->spa_label_features, 0) == 0); | |
2980 | } | |
2981 | ||
2982 | nvlist_free(label); | |
2983 | ||
2984 | /* | |
2985 | * Look through entries in the label nvlist's features_for_read. If | |
2986 | * there is a feature listed there which we don't understand then we | |
2987 | * cannot open a pool. | |
2988 | */ | |
2989 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
2990 | nvlist_t *unsup_feat; | |
9ae529ec CS |
2991 | |
2992 | VERIFY(nvlist_alloc(&unsup_feat, NV_UNIQUE_NAME, KM_SLEEP) == | |
2993 | 0); | |
2994 | ||
1c27024e DB |
2995 | for (nvpair_t *nvp = nvlist_next_nvpair(spa->spa_label_features, |
2996 | NULL); nvp != NULL; | |
9ae529ec CS |
2997 | nvp = nvlist_next_nvpair(spa->spa_label_features, nvp)) { |
2998 | if (!zfeature_is_supported(nvpair_name(nvp))) { | |
2999 | VERIFY(nvlist_add_string(unsup_feat, | |
3000 | nvpair_name(nvp), "") == 0); | |
3001 | } | |
3002 | } | |
3003 | ||
3004 | if (!nvlist_empty(unsup_feat)) { | |
3005 | VERIFY(nvlist_add_nvlist(spa->spa_load_info, | |
3006 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat) == 0); | |
3007 | nvlist_free(unsup_feat); | |
4a0ee12a | 3008 | spa_load_failed(spa, "some features are unsupported"); |
9ae529ec CS |
3009 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, |
3010 | ENOTSUP)); | |
3011 | } | |
3012 | ||
3013 | nvlist_free(unsup_feat); | |
3014 | } | |
428870ff | 3015 | |
428870ff BB |
3016 | if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) { |
3017 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
6cb8e530 | 3018 | spa_try_repair(spa, spa->spa_config); |
428870ff BB |
3019 | spa_config_exit(spa, SCL_ALL, FTAG); |
3020 | nvlist_free(spa->spa_config_splitting); | |
3021 | spa->spa_config_splitting = NULL; | |
3022 | } | |
3023 | ||
3024 | /* | |
3025 | * Initialize internal SPA structures. | |
3026 | */ | |
d2734cce | 3027 | spa_ld_select_uberblock_done(spa, ub); |
428870ff | 3028 | |
9eb7b46e PZ |
3029 | return (0); |
3030 | } | |
3031 | ||
3032 | static int | |
3033 | spa_ld_open_rootbp(spa_t *spa) | |
3034 | { | |
3035 | int error = 0; | |
3036 | vdev_t *rvd = spa->spa_root_vdev; | |
a1d477c2 | 3037 | |
9ae529ec | 3038 | error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
4a0ee12a PZ |
3039 | if (error != 0) { |
3040 | spa_load_failed(spa, "unable to open rootbp in dsl_pool_init " | |
3041 | "[error=%d]", error); | |
428870ff | 3042 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3043 | } |
428870ff BB |
3044 | spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
3045 | ||
9eb7b46e PZ |
3046 | return (0); |
3047 | } | |
3048 | ||
3049 | static int | |
d2734cce | 3050 | spa_ld_trusted_config(spa_t *spa, spa_import_type_t type, |
6cb8e530 | 3051 | boolean_t reloading) |
9eb7b46e | 3052 | { |
6cb8e530 PZ |
3053 | vdev_t *mrvd, *rvd = spa->spa_root_vdev; |
3054 | nvlist_t *nv, *mos_config, *policy; | |
3055 | int error = 0, copy_error; | |
3056 | uint64_t healthy_tvds, healthy_tvds_mos; | |
3057 | uint64_t mos_config_txg; | |
9eb7b46e | 3058 | |
4a0ee12a PZ |
3059 | if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object, B_TRUE) |
3060 | != 0) | |
428870ff BB |
3061 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3062 | ||
a1d477c2 | 3063 | /* |
6cb8e530 PZ |
3064 | * If we're assembling a pool from a split, the config provided is |
3065 | * already trusted so there is nothing to do. | |
a1d477c2 | 3066 | */ |
6cb8e530 PZ |
3067 | if (type == SPA_IMPORT_ASSEMBLE) |
3068 | return (0); | |
3069 | ||
3070 | healthy_tvds = spa_healthy_core_tvds(spa); | |
a1d477c2 | 3071 | |
6cb8e530 PZ |
3072 | if (load_nvlist(spa, spa->spa_config_object, &mos_config) |
3073 | != 0) { | |
3074 | spa_load_failed(spa, "unable to retrieve MOS config"); | |
3075 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3076 | } | |
3077 | ||
3078 | /* | |
3079 | * If we are doing an open, pool owner wasn't verified yet, thus do | |
3080 | * the verification here. | |
3081 | */ | |
3082 | if (spa->spa_load_state == SPA_LOAD_OPEN) { | |
3083 | error = spa_verify_host(spa, mos_config); | |
3084 | if (error != 0) { | |
a1d477c2 | 3085 | nvlist_free(mos_config); |
6cb8e530 | 3086 | return (error); |
a1d477c2 | 3087 | } |
6cb8e530 PZ |
3088 | } |
3089 | ||
3090 | nv = fnvlist_lookup_nvlist(mos_config, ZPOOL_CONFIG_VDEV_TREE); | |
a1d477c2 | 3091 | |
6cb8e530 PZ |
3092 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
3093 | ||
3094 | /* | |
3095 | * Build a new vdev tree from the trusted config | |
3096 | */ | |
3097 | VERIFY(spa_config_parse(spa, &mrvd, nv, NULL, 0, VDEV_ALLOC_LOAD) == 0); | |
3098 | ||
3099 | /* | |
3100 | * Vdev paths in the MOS may be obsolete. If the untrusted config was | |
3101 | * obtained by scanning /dev/dsk, then it will have the right vdev | |
3102 | * paths. We update the trusted MOS config with this information. | |
3103 | * We first try to copy the paths with vdev_copy_path_strict, which | |
3104 | * succeeds only when both configs have exactly the same vdev tree. | |
3105 | * If that fails, we fall back to a more flexible method that has a | |
3106 | * best effort policy. | |
3107 | */ | |
3108 | copy_error = vdev_copy_path_strict(rvd, mrvd); | |
3109 | if (copy_error != 0 || spa_load_print_vdev_tree) { | |
3110 | spa_load_note(spa, "provided vdev tree:"); | |
3111 | vdev_dbgmsg_print_tree(rvd, 2); | |
3112 | spa_load_note(spa, "MOS vdev tree:"); | |
3113 | vdev_dbgmsg_print_tree(mrvd, 2); | |
3114 | } | |
3115 | if (copy_error != 0) { | |
3116 | spa_load_note(spa, "vdev_copy_path_strict failed, falling " | |
3117 | "back to vdev_copy_path_relaxed"); | |
3118 | vdev_copy_path_relaxed(rvd, mrvd); | |
3119 | } | |
3120 | ||
3121 | vdev_close(rvd); | |
3122 | vdev_free(rvd); | |
3123 | spa->spa_root_vdev = mrvd; | |
3124 | rvd = mrvd; | |
3125 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3126 | ||
3127 | /* | |
3128 | * We will use spa_config if we decide to reload the spa or if spa_load | |
3129 | * fails and we rewind. We must thus regenerate the config using the | |
8a393be3 PZ |
3130 | * MOS information with the updated paths. ZPOOL_LOAD_POLICY is used to |
3131 | * pass settings on how to load the pool and is not stored in the MOS. | |
3132 | * We copy it over to our new, trusted config. | |
6cb8e530 PZ |
3133 | */ |
3134 | mos_config_txg = fnvlist_lookup_uint64(mos_config, | |
3135 | ZPOOL_CONFIG_POOL_TXG); | |
3136 | nvlist_free(mos_config); | |
3137 | mos_config = spa_config_generate(spa, NULL, mos_config_txg, B_FALSE); | |
8a393be3 | 3138 | if (nvlist_lookup_nvlist(spa->spa_config, ZPOOL_LOAD_POLICY, |
6cb8e530 | 3139 | &policy) == 0) |
8a393be3 | 3140 | fnvlist_add_nvlist(mos_config, ZPOOL_LOAD_POLICY, policy); |
6cb8e530 PZ |
3141 | spa_config_set(spa, mos_config); |
3142 | spa->spa_config_source = SPA_CONFIG_SRC_MOS; | |
3143 | ||
3144 | /* | |
3145 | * Now that we got the config from the MOS, we should be more strict | |
3146 | * in checking blkptrs and can make assumptions about the consistency | |
3147 | * of the vdev tree. spa_trust_config must be set to true before opening | |
3148 | * vdevs in order for them to be writeable. | |
3149 | */ | |
3150 | spa->spa_trust_config = B_TRUE; | |
3151 | ||
3152 | /* | |
3153 | * Open and validate the new vdev tree | |
3154 | */ | |
3155 | error = spa_ld_open_vdevs(spa); | |
3156 | if (error != 0) | |
3157 | return (error); | |
3158 | ||
3159 | error = spa_ld_validate_vdevs(spa); | |
3160 | if (error != 0) | |
3161 | return (error); | |
3162 | ||
3163 | if (copy_error != 0 || spa_load_print_vdev_tree) { | |
3164 | spa_load_note(spa, "final vdev tree:"); | |
3165 | vdev_dbgmsg_print_tree(rvd, 2); | |
3166 | } | |
3167 | ||
3168 | if (spa->spa_load_state != SPA_LOAD_TRYIMPORT && | |
3169 | !spa->spa_extreme_rewind && zfs_max_missing_tvds == 0) { | |
a1d477c2 | 3170 | /* |
6cb8e530 PZ |
3171 | * Sanity check to make sure that we are indeed loading the |
3172 | * latest uberblock. If we missed SPA_SYNC_MIN_VDEVS tvds | |
3173 | * in the config provided and they happened to be the only ones | |
3174 | * to have the latest uberblock, we could involuntarily perform | |
3175 | * an extreme rewind. | |
a1d477c2 | 3176 | */ |
6cb8e530 PZ |
3177 | healthy_tvds_mos = spa_healthy_core_tvds(spa); |
3178 | if (healthy_tvds_mos - healthy_tvds >= | |
3179 | SPA_SYNC_MIN_VDEVS) { | |
3180 | spa_load_note(spa, "config provided misses too many " | |
3181 | "top-level vdevs compared to MOS (%lld vs %lld). ", | |
3182 | (u_longlong_t)healthy_tvds, | |
3183 | (u_longlong_t)healthy_tvds_mos); | |
3184 | spa_load_note(spa, "vdev tree:"); | |
3185 | vdev_dbgmsg_print_tree(rvd, 2); | |
3186 | if (reloading) { | |
3187 | spa_load_failed(spa, "config was already " | |
3188 | "provided from MOS. Aborting."); | |
3189 | return (spa_vdev_err(rvd, | |
3190 | VDEV_AUX_CORRUPT_DATA, EIO)); | |
3191 | } | |
3192 | spa_load_note(spa, "spa must be reloaded using MOS " | |
3193 | "config"); | |
3194 | return (SET_ERROR(EAGAIN)); | |
4a0ee12a | 3195 | } |
a1d477c2 MA |
3196 | } |
3197 | ||
6cb8e530 PZ |
3198 | error = spa_check_for_missing_logs(spa); |
3199 | if (error != 0) | |
3200 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO)); | |
3201 | ||
3202 | if (rvd->vdev_guid_sum != spa->spa_uberblock.ub_guid_sum) { | |
3203 | spa_load_failed(spa, "uberblock guid sum doesn't match MOS " | |
3204 | "guid sum (%llu != %llu)", | |
3205 | (u_longlong_t)spa->spa_uberblock.ub_guid_sum, | |
3206 | (u_longlong_t)rvd->vdev_guid_sum); | |
3207 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, | |
3208 | ENXIO)); | |
3209 | } | |
3210 | ||
9eb7b46e PZ |
3211 | return (0); |
3212 | } | |
3213 | ||
3214 | static int | |
3215 | spa_ld_open_indirect_vdev_metadata(spa_t *spa) | |
3216 | { | |
3217 | int error = 0; | |
3218 | vdev_t *rvd = spa->spa_root_vdev; | |
3219 | ||
a1d477c2 MA |
3220 | /* |
3221 | * Everything that we read before spa_remove_init() must be stored | |
3222 | * on concreted vdevs. Therefore we do this as early as possible. | |
3223 | */ | |
4a0ee12a PZ |
3224 | error = spa_remove_init(spa); |
3225 | if (error != 0) { | |
3226 | spa_load_failed(spa, "spa_remove_init failed [error=%d]", | |
3227 | error); | |
a1d477c2 | 3228 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3229 | } |
a1d477c2 | 3230 | |
9eb7b46e PZ |
3231 | /* |
3232 | * Retrieve information needed to condense indirect vdev mappings. | |
3233 | */ | |
3234 | error = spa_condense_init(spa); | |
3235 | if (error != 0) { | |
4a0ee12a PZ |
3236 | spa_load_failed(spa, "spa_condense_init failed [error=%d]", |
3237 | error); | |
9eb7b46e PZ |
3238 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error)); |
3239 | } | |
3240 | ||
3241 | return (0); | |
3242 | } | |
3243 | ||
3244 | static int | |
4a0ee12a | 3245 | spa_ld_check_features(spa_t *spa, boolean_t *missing_feat_writep) |
9eb7b46e PZ |
3246 | { |
3247 | int error = 0; | |
3248 | vdev_t *rvd = spa->spa_root_vdev; | |
3249 | ||
9ae529ec CS |
3250 | if (spa_version(spa) >= SPA_VERSION_FEATURES) { |
3251 | boolean_t missing_feat_read = B_FALSE; | |
b9b24bb4 | 3252 | nvlist_t *unsup_feat, *enabled_feat; |
9ae529ec CS |
3253 | |
3254 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ, | |
4a0ee12a | 3255 | &spa->spa_feat_for_read_obj, B_TRUE) != 0) { |
9ae529ec CS |
3256 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3257 | } | |
3258 | ||
3259 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE, | |
4a0ee12a | 3260 | &spa->spa_feat_for_write_obj, B_TRUE) != 0) { |
9ae529ec CS |
3261 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3262 | } | |
3263 | ||
3264 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS, | |
4a0ee12a | 3265 | &spa->spa_feat_desc_obj, B_TRUE) != 0) { |
9ae529ec CS |
3266 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3267 | } | |
3268 | ||
b9b24bb4 CS |
3269 | enabled_feat = fnvlist_alloc(); |
3270 | unsup_feat = fnvlist_alloc(); | |
9ae529ec | 3271 | |
fa86b5db | 3272 | if (!spa_features_check(spa, B_FALSE, |
b9b24bb4 | 3273 | unsup_feat, enabled_feat)) |
9ae529ec CS |
3274 | missing_feat_read = B_TRUE; |
3275 | ||
4a0ee12a PZ |
3276 | if (spa_writeable(spa) || |
3277 | spa->spa_load_state == SPA_LOAD_TRYIMPORT) { | |
fa86b5db | 3278 | if (!spa_features_check(spa, B_TRUE, |
b9b24bb4 | 3279 | unsup_feat, enabled_feat)) { |
9eb7b46e | 3280 | *missing_feat_writep = B_TRUE; |
b9b24bb4 | 3281 | } |
9ae529ec CS |
3282 | } |
3283 | ||
b9b24bb4 CS |
3284 | fnvlist_add_nvlist(spa->spa_load_info, |
3285 | ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat); | |
3286 | ||
9ae529ec | 3287 | if (!nvlist_empty(unsup_feat)) { |
b9b24bb4 CS |
3288 | fnvlist_add_nvlist(spa->spa_load_info, |
3289 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat); | |
9ae529ec CS |
3290 | } |
3291 | ||
b9b24bb4 CS |
3292 | fnvlist_free(enabled_feat); |
3293 | fnvlist_free(unsup_feat); | |
9ae529ec CS |
3294 | |
3295 | if (!missing_feat_read) { | |
3296 | fnvlist_add_boolean(spa->spa_load_info, | |
3297 | ZPOOL_CONFIG_CAN_RDONLY); | |
3298 | } | |
3299 | ||
3300 | /* | |
3301 | * If the state is SPA_LOAD_TRYIMPORT, our objective is | |
3302 | * twofold: to determine whether the pool is available for | |
3303 | * import in read-write mode and (if it is not) whether the | |
3304 | * pool is available for import in read-only mode. If the pool | |
3305 | * is available for import in read-write mode, it is displayed | |
3306 | * as available in userland; if it is not available for import | |
3307 | * in read-only mode, it is displayed as unavailable in | |
3308 | * userland. If the pool is available for import in read-only | |
3309 | * mode but not read-write mode, it is displayed as unavailable | |
3310 | * in userland with a special note that the pool is actually | |
3311 | * available for open in read-only mode. | |
3312 | * | |
3313 | * As a result, if the state is SPA_LOAD_TRYIMPORT and we are | |
3314 | * missing a feature for write, we must first determine whether | |
3315 | * the pool can be opened read-only before returning to | |
3316 | * userland in order to know whether to display the | |
3317 | * abovementioned note. | |
3318 | */ | |
9eb7b46e | 3319 | if (missing_feat_read || (*missing_feat_writep && |
9ae529ec | 3320 | spa_writeable(spa))) { |
4a0ee12a | 3321 | spa_load_failed(spa, "pool uses unsupported features"); |
9ae529ec CS |
3322 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, |
3323 | ENOTSUP)); | |
3324 | } | |
b0bc7a84 MG |
3325 | |
3326 | /* | |
3327 | * Load refcounts for ZFS features from disk into an in-memory | |
3328 | * cache during SPA initialization. | |
3329 | */ | |
1c27024e | 3330 | for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { |
b0bc7a84 MG |
3331 | uint64_t refcount; |
3332 | ||
3333 | error = feature_get_refcount_from_disk(spa, | |
3334 | &spa_feature_table[i], &refcount); | |
3335 | if (error == 0) { | |
3336 | spa->spa_feat_refcount_cache[i] = refcount; | |
3337 | } else if (error == ENOTSUP) { | |
3338 | spa->spa_feat_refcount_cache[i] = | |
3339 | SPA_FEATURE_DISABLED; | |
3340 | } else { | |
4a0ee12a PZ |
3341 | spa_load_failed(spa, "error getting refcount " |
3342 | "for feature %s [error=%d]", | |
3343 | spa_feature_table[i].fi_guid, error); | |
b0bc7a84 MG |
3344 | return (spa_vdev_err(rvd, |
3345 | VDEV_AUX_CORRUPT_DATA, EIO)); | |
3346 | } | |
3347 | } | |
3348 | } | |
3349 | ||
3350 | if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) { | |
3351 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_ENABLED_TXG, | |
4a0ee12a | 3352 | &spa->spa_feat_enabled_txg_obj, B_TRUE) != 0) |
b0bc7a84 | 3353 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
9ae529ec CS |
3354 | } |
3355 | ||
9eb7b46e PZ |
3356 | return (0); |
3357 | } | |
3358 | ||
3359 | static int | |
3360 | spa_ld_load_special_directories(spa_t *spa) | |
3361 | { | |
3362 | int error = 0; | |
3363 | vdev_t *rvd = spa->spa_root_vdev; | |
3364 | ||
9ae529ec CS |
3365 | spa->spa_is_initializing = B_TRUE; |
3366 | error = dsl_pool_open(spa->spa_dsl_pool); | |
3367 | spa->spa_is_initializing = B_FALSE; | |
4a0ee12a PZ |
3368 | if (error != 0) { |
3369 | spa_load_failed(spa, "dsl_pool_open failed [error=%d]", error); | |
9ae529ec | 3370 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3371 | } |
9ae529ec | 3372 | |
9eb7b46e PZ |
3373 | return (0); |
3374 | } | |
428870ff | 3375 | |
9eb7b46e PZ |
3376 | static int |
3377 | spa_ld_get_props(spa_t *spa) | |
3378 | { | |
3379 | int error = 0; | |
3380 | uint64_t obj; | |
3381 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 3382 | |
3c67d83a TH |
3383 | /* Grab the checksum salt from the MOS. */ |
3384 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
3385 | DMU_POOL_CHECKSUM_SALT, 1, | |
3386 | sizeof (spa->spa_cksum_salt.zcs_bytes), | |
3387 | spa->spa_cksum_salt.zcs_bytes); | |
3388 | if (error == ENOENT) { | |
3389 | /* Generate a new salt for subsequent use */ | |
3390 | (void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes, | |
3391 | sizeof (spa->spa_cksum_salt.zcs_bytes)); | |
3392 | } else if (error != 0) { | |
4a0ee12a PZ |
3393 | spa_load_failed(spa, "unable to retrieve checksum salt from " |
3394 | "MOS [error=%d]", error); | |
3c67d83a TH |
3395 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3396 | } | |
3397 | ||
4a0ee12a | 3398 | if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj, B_TRUE) != 0) |
428870ff BB |
3399 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
3400 | error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj); | |
4a0ee12a PZ |
3401 | if (error != 0) { |
3402 | spa_load_failed(spa, "error opening deferred-frees bpobj " | |
3403 | "[error=%d]", error); | |
428870ff | 3404 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3405 | } |
34dc7c2f BB |
3406 | |
3407 | /* | |
3408 | * Load the bit that tells us to use the new accounting function | |
3409 | * (raid-z deflation). If we have an older pool, this will not | |
3410 | * be present. | |
3411 | */ | |
4a0ee12a | 3412 | error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate, B_FALSE); |
428870ff BB |
3413 | if (error != 0 && error != ENOENT) |
3414 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3415 | ||
3416 | error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION, | |
4a0ee12a | 3417 | &spa->spa_creation_version, B_FALSE); |
428870ff BB |
3418 | if (error != 0 && error != ENOENT) |
3419 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
3420 | |
3421 | /* | |
3422 | * Load the persistent error log. If we have an older pool, this will | |
3423 | * not be present. | |
3424 | */ | |
4a0ee12a PZ |
3425 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last, |
3426 | B_FALSE); | |
428870ff BB |
3427 | if (error != 0 && error != ENOENT) |
3428 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 3429 | |
428870ff | 3430 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB, |
4a0ee12a | 3431 | &spa->spa_errlog_scrub, B_FALSE); |
428870ff BB |
3432 | if (error != 0 && error != ENOENT) |
3433 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
3434 | |
3435 | /* | |
3436 | * Load the history object. If we have an older pool, this | |
3437 | * will not be present. | |
3438 | */ | |
4a0ee12a | 3439 | error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history, B_FALSE); |
428870ff BB |
3440 | if (error != 0 && error != ENOENT) |
3441 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3442 | ||
e0ab3ab5 JS |
3443 | /* |
3444 | * Load the per-vdev ZAP map. If we have an older pool, this will not | |
3445 | * be present; in this case, defer its creation to a later time to | |
3446 | * avoid dirtying the MOS this early / out of sync context. See | |
3447 | * spa_sync_config_object. | |
3448 | */ | |
3449 | ||
3450 | /* The sentinel is only available in the MOS config. */ | |
1c27024e | 3451 | nvlist_t *mos_config; |
4a0ee12a PZ |
3452 | if (load_nvlist(spa, spa->spa_config_object, &mos_config) != 0) { |
3453 | spa_load_failed(spa, "unable to retrieve MOS config"); | |
e0ab3ab5 | 3454 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3455 | } |
e0ab3ab5 JS |
3456 | |
3457 | error = spa_dir_prop(spa, DMU_POOL_VDEV_ZAP_MAP, | |
4a0ee12a | 3458 | &spa->spa_all_vdev_zaps, B_FALSE); |
e0ab3ab5 | 3459 | |
38640550 DB |
3460 | if (error == ENOENT) { |
3461 | VERIFY(!nvlist_exists(mos_config, | |
3462 | ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)); | |
3463 | spa->spa_avz_action = AVZ_ACTION_INITIALIZE; | |
3464 | ASSERT0(vdev_count_verify_zaps(spa->spa_root_vdev)); | |
3465 | } else if (error != 0) { | |
e0ab3ab5 | 3466 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
38640550 | 3467 | } else if (!nvlist_exists(mos_config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)) { |
e0ab3ab5 JS |
3468 | /* |
3469 | * An older version of ZFS overwrote the sentinel value, so | |
3470 | * we have orphaned per-vdev ZAPs in the MOS. Defer their | |
3471 | * destruction to later; see spa_sync_config_object. | |
3472 | */ | |
3473 | spa->spa_avz_action = AVZ_ACTION_DESTROY; | |
3474 | /* | |
3475 | * We're assuming that no vdevs have had their ZAPs created | |
3476 | * before this. Better be sure of it. | |
3477 | */ | |
3478 | ASSERT0(vdev_count_verify_zaps(spa->spa_root_vdev)); | |
3479 | } | |
3480 | nvlist_free(mos_config); | |
3481 | ||
9eb7b46e PZ |
3482 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
3483 | ||
4a0ee12a PZ |
3484 | error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object, |
3485 | B_FALSE); | |
9eb7b46e PZ |
3486 | if (error && error != ENOENT) |
3487 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3488 | ||
3489 | if (error == 0) { | |
3490 | uint64_t autoreplace; | |
3491 | ||
3492 | spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs); | |
3493 | spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace); | |
3494 | spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation); | |
3495 | spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode); | |
3496 | spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand); | |
c02c1bec | 3497 | spa_prop_find(spa, ZPOOL_PROP_MULTIHOST, &spa->spa_multihost); |
9eb7b46e PZ |
3498 | spa_prop_find(spa, ZPOOL_PROP_DEDUPDITTO, |
3499 | &spa->spa_dedup_ditto); | |
3500 | ||
3501 | spa->spa_autoreplace = (autoreplace != 0); | |
3502 | } | |
3503 | ||
6cb8e530 PZ |
3504 | /* |
3505 | * If we are importing a pool with missing top-level vdevs, | |
3506 | * we enforce that the pool doesn't panic or get suspended on | |
3507 | * error since the likelihood of missing data is extremely high. | |
3508 | */ | |
3509 | if (spa->spa_missing_tvds > 0 && | |
3510 | spa->spa_failmode != ZIO_FAILURE_MODE_CONTINUE && | |
3511 | spa->spa_load_state != SPA_LOAD_TRYIMPORT) { | |
3512 | spa_load_note(spa, "forcing failmode to 'continue' " | |
3513 | "as some top level vdevs are missing"); | |
3514 | spa->spa_failmode = ZIO_FAILURE_MODE_CONTINUE; | |
3515 | } | |
3516 | ||
9eb7b46e PZ |
3517 | return (0); |
3518 | } | |
3519 | ||
3520 | static int | |
3521 | spa_ld_open_aux_vdevs(spa_t *spa, spa_import_type_t type) | |
3522 | { | |
3523 | int error = 0; | |
3524 | vdev_t *rvd = spa->spa_root_vdev; | |
3525 | ||
428870ff BB |
3526 | /* |
3527 | * If we're assembling the pool from the split-off vdevs of | |
3528 | * an existing pool, we don't want to attach the spares & cache | |
3529 | * devices. | |
3530 | */ | |
34dc7c2f BB |
3531 | |
3532 | /* | |
3533 | * Load any hot spares for this pool. | |
3534 | */ | |
4a0ee12a PZ |
3535 | error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object, |
3536 | B_FALSE); | |
428870ff BB |
3537 | if (error != 0 && error != ENOENT) |
3538 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3539 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
3540 | ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); |
3541 | if (load_nvlist(spa, spa->spa_spares.sav_object, | |
4a0ee12a PZ |
3542 | &spa->spa_spares.sav_config) != 0) { |
3543 | spa_load_failed(spa, "error loading spares nvlist"); | |
428870ff | 3544 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3545 | } |
34dc7c2f | 3546 | |
b128c09f | 3547 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3548 | spa_load_spares(spa); |
b128c09f | 3549 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
3550 | } else if (error == 0) { |
3551 | spa->spa_spares.sav_sync = B_TRUE; | |
34dc7c2f BB |
3552 | } |
3553 | ||
3554 | /* | |
3555 | * Load any level 2 ARC devices for this pool. | |
3556 | */ | |
428870ff | 3557 | error = spa_dir_prop(spa, DMU_POOL_L2CACHE, |
4a0ee12a | 3558 | &spa->spa_l2cache.sav_object, B_FALSE); |
428870ff BB |
3559 | if (error != 0 && error != ENOENT) |
3560 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
3561 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
3562 | ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); |
3563 | if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
4a0ee12a PZ |
3564 | &spa->spa_l2cache.sav_config) != 0) { |
3565 | spa_load_failed(spa, "error loading l2cache nvlist"); | |
428870ff | 3566 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3567 | } |
34dc7c2f | 3568 | |
b128c09f | 3569 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3570 | spa_load_l2cache(spa); |
b128c09f | 3571 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
3572 | } else if (error == 0) { |
3573 | spa->spa_l2cache.sav_sync = B_TRUE; | |
b128c09f BB |
3574 | } |
3575 | ||
9eb7b46e PZ |
3576 | return (0); |
3577 | } | |
428870ff | 3578 | |
9eb7b46e | 3579 | static int |
4a0ee12a | 3580 | spa_ld_load_vdev_metadata(spa_t *spa) |
9eb7b46e PZ |
3581 | { |
3582 | int error = 0; | |
3583 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 3584 | |
379ca9cf OF |
3585 | /* |
3586 | * If the 'multihost' property is set, then never allow a pool to | |
3587 | * be imported when the system hostid is zero. The exception to | |
3588 | * this rule is zdb which is always allowed to access pools. | |
3589 | */ | |
3590 | if (spa_multihost(spa) && spa_get_hostid() == 0 && | |
3591 | (spa->spa_import_flags & ZFS_IMPORT_SKIP_MMP) == 0) { | |
3592 | fnvlist_add_uint64(spa->spa_load_info, | |
3593 | ZPOOL_CONFIG_MMP_STATE, MMP_STATE_NO_HOSTID); | |
3594 | return (spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO)); | |
3595 | } | |
3596 | ||
34dc7c2f BB |
3597 | /* |
3598 | * If the 'autoreplace' property is set, then post a resource notifying | |
3599 | * the ZFS DE that it should not issue any faults for unopenable | |
3600 | * devices. We also iterate over the vdevs, and post a sysevent for any | |
3601 | * unopenable vdevs so that the normal autoreplace handler can take | |
3602 | * over. | |
3603 | */ | |
4a0ee12a | 3604 | if (spa->spa_autoreplace && spa->spa_load_state != SPA_LOAD_TRYIMPORT) { |
34dc7c2f | 3605 | spa_check_removed(spa->spa_root_vdev); |
428870ff BB |
3606 | /* |
3607 | * For the import case, this is done in spa_import(), because | |
3608 | * at this point we're using the spare definitions from | |
3609 | * the MOS config, not necessarily from the userland config. | |
3610 | */ | |
4a0ee12a | 3611 | if (spa->spa_load_state != SPA_LOAD_IMPORT) { |
428870ff BB |
3612 | spa_aux_check_removed(&spa->spa_spares); |
3613 | spa_aux_check_removed(&spa->spa_l2cache); | |
3614 | } | |
3615 | } | |
34dc7c2f BB |
3616 | |
3617 | /* | |
9eb7b46e | 3618 | * Load the vdev metadata such as metaslabs, DTLs, spacemap object, etc. |
34dc7c2f | 3619 | */ |
a1d477c2 MA |
3620 | error = vdev_load(rvd); |
3621 | if (error != 0) { | |
4a0ee12a | 3622 | spa_load_failed(spa, "vdev_load failed [error=%d]", error); |
a1d477c2 MA |
3623 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error)); |
3624 | } | |
3625 | ||
34dc7c2f | 3626 | /* |
9eb7b46e | 3627 | * Propagate the leaf DTLs we just loaded all the way up the vdev tree. |
34dc7c2f | 3628 | */ |
b128c09f | 3629 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3630 | vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
b128c09f | 3631 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 3632 | |
9eb7b46e PZ |
3633 | return (0); |
3634 | } | |
3635 | ||
3636 | static int | |
3637 | spa_ld_load_dedup_tables(spa_t *spa) | |
3638 | { | |
3639 | int error = 0; | |
3640 | vdev_t *rvd = spa->spa_root_vdev; | |
3641 | ||
428870ff | 3642 | error = ddt_load(spa); |
4a0ee12a PZ |
3643 | if (error != 0) { |
3644 | spa_load_failed(spa, "ddt_load failed [error=%d]", error); | |
428870ff | 3645 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
4a0ee12a | 3646 | } |
428870ff | 3647 | |
9eb7b46e PZ |
3648 | return (0); |
3649 | } | |
3650 | ||
3651 | static int | |
3652 | spa_ld_verify_logs(spa_t *spa, spa_import_type_t type, char **ereport) | |
3653 | { | |
3654 | vdev_t *rvd = spa->spa_root_vdev; | |
428870ff | 3655 | |
4a0ee12a PZ |
3656 | if (type != SPA_IMPORT_ASSEMBLE && spa_writeable(spa)) { |
3657 | boolean_t missing = spa_check_logs(spa); | |
3658 | if (missing) { | |
6cb8e530 PZ |
3659 | if (spa->spa_missing_tvds != 0) { |
3660 | spa_load_note(spa, "spa_check_logs failed " | |
3661 | "so dropping the logs"); | |
3662 | } else { | |
3663 | *ereport = FM_EREPORT_ZFS_LOG_REPLAY; | |
3664 | spa_load_failed(spa, "spa_check_logs failed"); | |
3665 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG, | |
3666 | ENXIO)); | |
3667 | } | |
4a0ee12a | 3668 | } |
428870ff BB |
3669 | } |
3670 | ||
9eb7b46e PZ |
3671 | return (0); |
3672 | } | |
3673 | ||
3674 | static int | |
4a0ee12a | 3675 | spa_ld_verify_pool_data(spa_t *spa) |
9eb7b46e PZ |
3676 | { |
3677 | int error = 0; | |
3678 | vdev_t *rvd = spa->spa_root_vdev; | |
3679 | ||
3680 | /* | |
3681 | * We've successfully opened the pool, verify that we're ready | |
3682 | * to start pushing transactions. | |
3683 | */ | |
4a0ee12a | 3684 | if (spa->spa_load_state != SPA_LOAD_TRYIMPORT) { |
9eb7b46e PZ |
3685 | error = spa_load_verify(spa); |
3686 | if (error != 0) { | |
4a0ee12a PZ |
3687 | spa_load_failed(spa, "spa_load_verify failed " |
3688 | "[error=%d]", error); | |
9eb7b46e PZ |
3689 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, |
3690 | error)); | |
3691 | } | |
3692 | } | |
3693 | ||
3694 | return (0); | |
3695 | } | |
3696 | ||
3697 | static void | |
3698 | spa_ld_claim_log_blocks(spa_t *spa) | |
3699 | { | |
3700 | dmu_tx_t *tx; | |
3701 | dsl_pool_t *dp = spa_get_dsl(spa); | |
3702 | ||
3703 | /* | |
3704 | * Claim log blocks that haven't been committed yet. | |
3705 | * This must all happen in a single txg. | |
3706 | * Note: spa_claim_max_txg is updated by spa_claim_notify(), | |
3707 | * invoked from zil_claim_log_block()'s i/o done callback. | |
3708 | * Price of rollback is that we abandon the log. | |
3709 | */ | |
3710 | spa->spa_claiming = B_TRUE; | |
3711 | ||
3712 | tx = dmu_tx_create_assigned(dp, spa_first_txg(spa)); | |
3713 | (void) dmu_objset_find_dp(dp, dp->dp_root_dir_obj, | |
3714 | zil_claim, tx, DS_FIND_CHILDREN); | |
3715 | dmu_tx_commit(tx); | |
3716 | ||
3717 | spa->spa_claiming = B_FALSE; | |
3718 | ||
3719 | spa_set_log_state(spa, SPA_LOG_GOOD); | |
3720 | } | |
3721 | ||
3722 | static void | |
6cb8e530 | 3723 | spa_ld_check_for_config_update(spa_t *spa, uint64_t config_cache_txg, |
d2734cce | 3724 | boolean_t update_config_cache) |
9eb7b46e PZ |
3725 | { |
3726 | vdev_t *rvd = spa->spa_root_vdev; | |
3727 | int need_update = B_FALSE; | |
3728 | ||
3729 | /* | |
3730 | * If the config cache is stale, or we have uninitialized | |
3731 | * metaslabs (see spa_vdev_add()), then update the config. | |
3732 | * | |
3733 | * If this is a verbatim import, trust the current | |
3734 | * in-core spa_config and update the disk labels. | |
3735 | */ | |
d2734cce | 3736 | if (update_config_cache || config_cache_txg != spa->spa_config_txg || |
4a0ee12a PZ |
3737 | spa->spa_load_state == SPA_LOAD_IMPORT || |
3738 | spa->spa_load_state == SPA_LOAD_RECOVER || | |
9eb7b46e PZ |
3739 | (spa->spa_import_flags & ZFS_IMPORT_VERBATIM)) |
3740 | need_update = B_TRUE; | |
3741 | ||
3742 | for (int c = 0; c < rvd->vdev_children; c++) | |
3743 | if (rvd->vdev_child[c]->vdev_ms_array == 0) | |
3744 | need_update = B_TRUE; | |
3745 | ||
3746 | /* | |
3747 | * Update the config cache asychronously in case we're the | |
3748 | * root pool, in which case the config cache isn't writable yet. | |
3749 | */ | |
3750 | if (need_update) | |
3751 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
3752 | } | |
3753 | ||
6cb8e530 PZ |
3754 | static void |
3755 | spa_ld_prepare_for_reload(spa_t *spa) | |
3756 | { | |
3757 | int mode = spa->spa_mode; | |
3758 | int async_suspended = spa->spa_async_suspended; | |
3759 | ||
3760 | spa_unload(spa); | |
3761 | spa_deactivate(spa); | |
3762 | spa_activate(spa, mode); | |
3763 | ||
3764 | /* | |
3765 | * We save the value of spa_async_suspended as it gets reset to 0 by | |
3766 | * spa_unload(). We want to restore it back to the original value before | |
3767 | * returning as we might be calling spa_async_resume() later. | |
3768 | */ | |
3769 | spa->spa_async_suspended = async_suspended; | |
3770 | } | |
3771 | ||
9eb7b46e | 3772 | static int |
d2734cce SD |
3773 | spa_ld_read_checkpoint_txg(spa_t *spa) |
3774 | { | |
3775 | uberblock_t checkpoint; | |
3776 | int error = 0; | |
3777 | ||
3778 | ASSERT0(spa->spa_checkpoint_txg); | |
3779 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
3780 | ||
3781 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
3782 | DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t), | |
3783 | sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint); | |
3784 | ||
3785 | if (error == ENOENT) | |
3786 | return (0); | |
3787 | ||
3788 | if (error != 0) | |
3789 | return (error); | |
3790 | ||
3791 | ASSERT3U(checkpoint.ub_txg, !=, 0); | |
3792 | ASSERT3U(checkpoint.ub_checkpoint_txg, !=, 0); | |
3793 | ASSERT3U(checkpoint.ub_timestamp, !=, 0); | |
3794 | spa->spa_checkpoint_txg = checkpoint.ub_txg; | |
3795 | spa->spa_checkpoint_info.sci_timestamp = checkpoint.ub_timestamp; | |
3796 | ||
3797 | return (0); | |
3798 | } | |
3799 | ||
3800 | static int | |
3801 | spa_ld_mos_init(spa_t *spa, spa_import_type_t type) | |
9eb7b46e PZ |
3802 | { |
3803 | int error = 0; | |
9eb7b46e | 3804 | |
4a0ee12a | 3805 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
6cb8e530 | 3806 | ASSERT(spa->spa_config_source != SPA_CONFIG_SRC_NONE); |
4a0ee12a | 3807 | |
9eb7b46e | 3808 | /* |
6cb8e530 PZ |
3809 | * Never trust the config that is provided unless we are assembling |
3810 | * a pool following a split. | |
3811 | * This means don't trust blkptrs and the vdev tree in general. This | |
3812 | * also effectively puts the spa in read-only mode since | |
3813 | * spa_writeable() checks for spa_trust_config to be true. | |
3814 | * We will later load a trusted config from the MOS. | |
9eb7b46e | 3815 | */ |
6cb8e530 PZ |
3816 | if (type != SPA_IMPORT_ASSEMBLE) |
3817 | spa->spa_trust_config = B_FALSE; | |
3818 | ||
9eb7b46e PZ |
3819 | /* |
3820 | * Parse the config provided to create a vdev tree. | |
3821 | */ | |
6cb8e530 | 3822 | error = spa_ld_parse_config(spa, type); |
9eb7b46e PZ |
3823 | if (error != 0) |
3824 | return (error); | |
3825 | ||
3826 | /* | |
3827 | * Now that we have the vdev tree, try to open each vdev. This involves | |
3828 | * opening the underlying physical device, retrieving its geometry and | |
3829 | * probing the vdev with a dummy I/O. The state of each vdev will be set | |
3830 | * based on the success of those operations. After this we'll be ready | |
3831 | * to read from the vdevs. | |
3832 | */ | |
3833 | error = spa_ld_open_vdevs(spa); | |
3834 | if (error != 0) | |
3835 | return (error); | |
3836 | ||
3837 | /* | |
3838 | * Read the label of each vdev and make sure that the GUIDs stored | |
3839 | * there match the GUIDs in the config provided. | |
6cb8e530 PZ |
3840 | * If we're assembling a new pool that's been split off from an |
3841 | * existing pool, the labels haven't yet been updated so we skip | |
3842 | * validation for now. | |
9eb7b46e | 3843 | */ |
6cb8e530 PZ |
3844 | if (type != SPA_IMPORT_ASSEMBLE) { |
3845 | error = spa_ld_validate_vdevs(spa); | |
3846 | if (error != 0) | |
3847 | return (error); | |
3848 | } | |
9eb7b46e PZ |
3849 | |
3850 | /* | |
d2734cce SD |
3851 | * Read all vdev labels to find the best uberblock (i.e. latest, |
3852 | * unless spa_load_max_txg is set) and store it in spa_uberblock. We | |
3853 | * get the list of features required to read blkptrs in the MOS from | |
3854 | * the vdev label with the best uberblock and verify that our version | |
3855 | * of zfs supports them all. | |
9eb7b46e | 3856 | */ |
6cb8e530 | 3857 | error = spa_ld_select_uberblock(spa, type); |
9eb7b46e PZ |
3858 | if (error != 0) |
3859 | return (error); | |
3860 | ||
3861 | /* | |
3862 | * Pass that uberblock to the dsl_pool layer which will open the root | |
3863 | * blkptr. This blkptr points to the latest version of the MOS and will | |
3864 | * allow us to read its contents. | |
3865 | */ | |
3866 | error = spa_ld_open_rootbp(spa); | |
3867 | if (error != 0) | |
3868 | return (error); | |
3869 | ||
d2734cce SD |
3870 | return (0); |
3871 | } | |
3872 | ||
3873 | static int | |
3874 | spa_ld_checkpoint_rewind(spa_t *spa) | |
3875 | { | |
3876 | uberblock_t checkpoint; | |
3877 | int error = 0; | |
3878 | ||
3879 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
3880 | ASSERT(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT); | |
3881 | ||
3882 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
3883 | DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t), | |
3884 | sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint); | |
3885 | ||
3886 | if (error != 0) { | |
3887 | spa_load_failed(spa, "unable to retrieve checkpointed " | |
3888 | "uberblock from the MOS config [error=%d]", error); | |
3889 | ||
3890 | if (error == ENOENT) | |
3891 | error = ZFS_ERR_NO_CHECKPOINT; | |
3892 | ||
3893 | return (error); | |
3894 | } | |
3895 | ||
3896 | ASSERT3U(checkpoint.ub_txg, <, spa->spa_uberblock.ub_txg); | |
3897 | ASSERT3U(checkpoint.ub_txg, ==, checkpoint.ub_checkpoint_txg); | |
3898 | ||
3899 | /* | |
3900 | * We need to update the txg and timestamp of the checkpointed | |
3901 | * uberblock to be higher than the latest one. This ensures that | |
3902 | * the checkpointed uberblock is selected if we were to close and | |
3903 | * reopen the pool right after we've written it in the vdev labels. | |
3904 | * (also see block comment in vdev_uberblock_compare) | |
3905 | */ | |
3906 | checkpoint.ub_txg = spa->spa_uberblock.ub_txg + 1; | |
3907 | checkpoint.ub_timestamp = gethrestime_sec(); | |
3908 | ||
3909 | /* | |
3910 | * Set current uberblock to be the checkpointed uberblock. | |
3911 | */ | |
3912 | spa->spa_uberblock = checkpoint; | |
3913 | ||
3914 | /* | |
3915 | * If we are doing a normal rewind, then the pool is open for | |
3916 | * writing and we sync the "updated" checkpointed uberblock to | |
3917 | * disk. Once this is done, we've basically rewound the whole | |
3918 | * pool and there is no way back. | |
3919 | * | |
3920 | * There are cases when we don't want to attempt and sync the | |
3921 | * checkpointed uberblock to disk because we are opening a | |
3922 | * pool as read-only. Specifically, verifying the checkpointed | |
3923 | * state with zdb, and importing the checkpointed state to get | |
3924 | * a "preview" of its content. | |
3925 | */ | |
3926 | if (spa_writeable(spa)) { | |
3927 | vdev_t *rvd = spa->spa_root_vdev; | |
3928 | ||
3929 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3930 | vdev_t *svd[SPA_SYNC_MIN_VDEVS] = { NULL }; | |
3931 | int svdcount = 0; | |
3932 | int children = rvd->vdev_children; | |
3933 | int c0 = spa_get_random(children); | |
3934 | ||
3935 | for (int c = 0; c < children; c++) { | |
3936 | vdev_t *vd = rvd->vdev_child[(c0 + c) % children]; | |
3937 | ||
3938 | /* Stop when revisiting the first vdev */ | |
3939 | if (c > 0 && svd[0] == vd) | |
3940 | break; | |
3941 | ||
3942 | if (vd->vdev_ms_array == 0 || vd->vdev_islog || | |
3943 | !vdev_is_concrete(vd)) | |
3944 | continue; | |
3945 | ||
3946 | svd[svdcount++] = vd; | |
3947 | if (svdcount == SPA_SYNC_MIN_VDEVS) | |
3948 | break; | |
3949 | } | |
3950 | error = vdev_config_sync(svd, svdcount, spa->spa_first_txg); | |
3951 | if (error == 0) | |
3952 | spa->spa_last_synced_guid = rvd->vdev_guid; | |
3953 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3954 | ||
3955 | if (error != 0) { | |
3956 | spa_load_failed(spa, "failed to write checkpointed " | |
3957 | "uberblock to the vdev labels [error=%d]", error); | |
3958 | return (error); | |
3959 | } | |
3960 | } | |
3961 | ||
3962 | return (0); | |
3963 | } | |
3964 | ||
3965 | static int | |
3966 | spa_ld_mos_with_trusted_config(spa_t *spa, spa_import_type_t type, | |
3967 | boolean_t *update_config_cache) | |
3968 | { | |
3969 | int error; | |
3970 | ||
3971 | /* | |
3972 | * Parse the config for pool, open and validate vdevs, | |
3973 | * select an uberblock, and use that uberblock to open | |
3974 | * the MOS. | |
3975 | */ | |
3976 | error = spa_ld_mos_init(spa, type); | |
3977 | if (error != 0) | |
3978 | return (error); | |
3979 | ||
9eb7b46e | 3980 | /* |
6cb8e530 PZ |
3981 | * Retrieve the trusted config stored in the MOS and use it to create |
3982 | * a new, exact version of the vdev tree, then reopen all vdevs. | |
9eb7b46e | 3983 | */ |
d2734cce | 3984 | error = spa_ld_trusted_config(spa, type, B_FALSE); |
6cb8e530 | 3985 | if (error == EAGAIN) { |
d2734cce SD |
3986 | if (update_config_cache != NULL) |
3987 | *update_config_cache = B_TRUE; | |
3988 | ||
6cb8e530 PZ |
3989 | /* |
3990 | * Redo the loading process with the trusted config if it is | |
3991 | * too different from the untrusted config. | |
3992 | */ | |
3993 | spa_ld_prepare_for_reload(spa); | |
d2734cce SD |
3994 | spa_load_note(spa, "RELOADING"); |
3995 | error = spa_ld_mos_init(spa, type); | |
3996 | if (error != 0) | |
3997 | return (error); | |
3998 | ||
3999 | error = spa_ld_trusted_config(spa, type, B_TRUE); | |
4000 | if (error != 0) | |
4001 | return (error); | |
4002 | ||
6cb8e530 | 4003 | } else if (error != 0) { |
9eb7b46e | 4004 | return (error); |
6cb8e530 | 4005 | } |
9eb7b46e | 4006 | |
d2734cce SD |
4007 | return (0); |
4008 | } | |
4009 | ||
4010 | /* | |
4011 | * Load an existing storage pool, using the config provided. This config | |
4012 | * describes which vdevs are part of the pool and is later validated against | |
4013 | * partial configs present in each vdev's label and an entire copy of the | |
4014 | * config stored in the MOS. | |
4015 | */ | |
4016 | static int | |
4017 | spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport) | |
4018 | { | |
4019 | int error = 0; | |
4020 | boolean_t missing_feat_write = B_FALSE; | |
4021 | boolean_t checkpoint_rewind = | |
4022 | (spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT); | |
4023 | boolean_t update_config_cache = B_FALSE; | |
4024 | ||
4025 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
4026 | ASSERT(spa->spa_config_source != SPA_CONFIG_SRC_NONE); | |
4027 | ||
4028 | spa_load_note(spa, "LOADING"); | |
4029 | ||
4030 | error = spa_ld_mos_with_trusted_config(spa, type, &update_config_cache); | |
4031 | if (error != 0) | |
4032 | return (error); | |
4033 | ||
4034 | /* | |
4035 | * If we are rewinding to the checkpoint then we need to repeat | |
4036 | * everything we've done so far in this function but this time | |
4037 | * selecting the checkpointed uberblock and using that to open | |
4038 | * the MOS. | |
4039 | */ | |
4040 | if (checkpoint_rewind) { | |
4041 | /* | |
4042 | * If we are rewinding to the checkpoint update config cache | |
4043 | * anyway. | |
4044 | */ | |
4045 | update_config_cache = B_TRUE; | |
4046 | ||
4047 | /* | |
4048 | * Extract the checkpointed uberblock from the current MOS | |
4049 | * and use this as the pool's uberblock from now on. If the | |
4050 | * pool is imported as writeable we also write the checkpoint | |
4051 | * uberblock to the labels, making the rewind permanent. | |
4052 | */ | |
4053 | error = spa_ld_checkpoint_rewind(spa); | |
4054 | if (error != 0) | |
4055 | return (error); | |
4056 | ||
4057 | /* | |
4058 | * Redo the loading process process again with the | |
4059 | * checkpointed uberblock. | |
4060 | */ | |
4061 | spa_ld_prepare_for_reload(spa); | |
4062 | spa_load_note(spa, "LOADING checkpointed uberblock"); | |
4063 | error = spa_ld_mos_with_trusted_config(spa, type, NULL); | |
4064 | if (error != 0) | |
4065 | return (error); | |
4066 | } | |
4067 | ||
4068 | /* | |
4069 | * Retrieve the checkpoint txg if the pool has a checkpoint. | |
4070 | */ | |
4071 | error = spa_ld_read_checkpoint_txg(spa); | |
4072 | if (error != 0) | |
4073 | return (error); | |
4074 | ||
9eb7b46e PZ |
4075 | /* |
4076 | * Retrieve the mapping of indirect vdevs. Those vdevs were removed | |
4077 | * from the pool and their contents were re-mapped to other vdevs. Note | |
4078 | * that everything that we read before this step must have been | |
4079 | * rewritten on concrete vdevs after the last device removal was | |
4080 | * initiated. Otherwise we could be reading from indirect vdevs before | |
4081 | * we have loaded their mappings. | |
4082 | */ | |
4083 | error = spa_ld_open_indirect_vdev_metadata(spa); | |
4084 | if (error != 0) | |
4085 | return (error); | |
4086 | ||
4087 | /* | |
4088 | * Retrieve the full list of active features from the MOS and check if | |
4089 | * they are all supported. | |
4090 | */ | |
4a0ee12a | 4091 | error = spa_ld_check_features(spa, &missing_feat_write); |
9eb7b46e PZ |
4092 | if (error != 0) |
4093 | return (error); | |
4094 | ||
4095 | /* | |
4096 | * Load several special directories from the MOS needed by the dsl_pool | |
4097 | * layer. | |
4098 | */ | |
4099 | error = spa_ld_load_special_directories(spa); | |
4100 | if (error != 0) | |
4101 | return (error); | |
4102 | ||
9eb7b46e PZ |
4103 | /* |
4104 | * Retrieve pool properties from the MOS. | |
4105 | */ | |
4106 | error = spa_ld_get_props(spa); | |
4107 | if (error != 0) | |
4108 | return (error); | |
4109 | ||
4110 | /* | |
4111 | * Retrieve the list of auxiliary devices - cache devices and spares - | |
4112 | * and open them. | |
4113 | */ | |
4114 | error = spa_ld_open_aux_vdevs(spa, type); | |
4115 | if (error != 0) | |
4116 | return (error); | |
4117 | ||
4118 | /* | |
4119 | * Load the metadata for all vdevs. Also check if unopenable devices | |
4120 | * should be autoreplaced. | |
4121 | */ | |
4a0ee12a | 4122 | error = spa_ld_load_vdev_metadata(spa); |
9eb7b46e PZ |
4123 | if (error != 0) |
4124 | return (error); | |
4125 | ||
4126 | error = spa_ld_load_dedup_tables(spa); | |
4127 | if (error != 0) | |
4128 | return (error); | |
4129 | ||
4130 | /* | |
4131 | * Verify the logs now to make sure we don't have any unexpected errors | |
4132 | * when we claim log blocks later. | |
4133 | */ | |
4134 | error = spa_ld_verify_logs(spa, type, ereport); | |
4135 | if (error != 0) | |
4136 | return (error); | |
4137 | ||
9ae529ec | 4138 | if (missing_feat_write) { |
6cb8e530 | 4139 | ASSERT(spa->spa_load_state == SPA_LOAD_TRYIMPORT); |
9ae529ec CS |
4140 | |
4141 | /* | |
4142 | * At this point, we know that we can open the pool in | |
4143 | * read-only mode but not read-write mode. We now have enough | |
4144 | * information and can return to userland. | |
4145 | */ | |
9eb7b46e PZ |
4146 | return (spa_vdev_err(spa->spa_root_vdev, VDEV_AUX_UNSUP_FEAT, |
4147 | ENOTSUP)); | |
9ae529ec CS |
4148 | } |
4149 | ||
572e2857 | 4150 | /* |
9eb7b46e PZ |
4151 | * Traverse the last txgs to make sure the pool was left off in a safe |
4152 | * state. When performing an extreme rewind, we verify the whole pool, | |
4153 | * which can take a very long time. | |
572e2857 | 4154 | */ |
4a0ee12a | 4155 | error = spa_ld_verify_pool_data(spa); |
9eb7b46e PZ |
4156 | if (error != 0) |
4157 | return (error); | |
572e2857 | 4158 | |
9eb7b46e PZ |
4159 | /* |
4160 | * Calculate the deflated space for the pool. This must be done before | |
4161 | * we write anything to the pool because we'd need to update the space | |
4162 | * accounting using the deflated sizes. | |
4163 | */ | |
4164 | spa_update_dspace(spa); | |
4165 | ||
4166 | /* | |
4167 | * We have now retrieved all the information we needed to open the | |
4168 | * pool. If we are importing the pool in read-write mode, a few | |
4169 | * additional steps must be performed to finish the import. | |
4170 | */ | |
6cb8e530 | 4171 | if (spa_writeable(spa) && (spa->spa_load_state == SPA_LOAD_RECOVER || |
428870ff | 4172 | spa->spa_load_max_txg == UINT64_MAX)) { |
6cb8e530 PZ |
4173 | uint64_t config_cache_txg = spa->spa_config_txg; |
4174 | ||
4175 | ASSERT(spa->spa_load_state != SPA_LOAD_TRYIMPORT); | |
34dc7c2f | 4176 | |
d2734cce SD |
4177 | /* |
4178 | * In case of a checkpoint rewind, log the original txg | |
4179 | * of the checkpointed uberblock. | |
4180 | */ | |
4181 | if (checkpoint_rewind) { | |
4182 | spa_history_log_internal(spa, "checkpoint rewind", | |
4183 | NULL, "rewound state to txg=%llu", | |
4184 | (u_longlong_t)spa->spa_uberblock.ub_checkpoint_txg); | |
4185 | } | |
4186 | ||
34dc7c2f | 4187 | /* |
9eb7b46e | 4188 | * Traverse the ZIL and claim all blocks. |
34dc7c2f | 4189 | */ |
9eb7b46e | 4190 | spa_ld_claim_log_blocks(spa); |
428870ff | 4191 | |
9eb7b46e PZ |
4192 | /* |
4193 | * Kick-off the syncing thread. | |
4194 | */ | |
34dc7c2f BB |
4195 | spa->spa_sync_on = B_TRUE; |
4196 | txg_sync_start(spa->spa_dsl_pool); | |
379ca9cf | 4197 | mmp_thread_start(spa); |
34dc7c2f BB |
4198 | |
4199 | /* | |
428870ff BB |
4200 | * Wait for all claims to sync. We sync up to the highest |
4201 | * claimed log block birth time so that claimed log blocks | |
4202 | * don't appear to be from the future. spa_claim_max_txg | |
9eb7b46e PZ |
4203 | * will have been set for us by ZIL traversal operations |
4204 | * performed above. | |
34dc7c2f | 4205 | */ |
428870ff | 4206 | txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg); |
34dc7c2f BB |
4207 | |
4208 | /* | |
9eb7b46e PZ |
4209 | * Check if we need to request an update of the config. On the |
4210 | * next sync, we would update the config stored in vdev labels | |
4211 | * and the cachefile (by default /etc/zfs/zpool.cache). | |
34dc7c2f | 4212 | */ |
6cb8e530 | 4213 | spa_ld_check_for_config_update(spa, config_cache_txg, |
d2734cce | 4214 | update_config_cache); |
fb5f0bc8 BB |
4215 | |
4216 | /* | |
4217 | * Check all DTLs to see if anything needs resilvering. | |
4218 | */ | |
428870ff | 4219 | if (!dsl_scan_resilvering(spa->spa_dsl_pool) && |
9eb7b46e | 4220 | vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) |
fb5f0bc8 | 4221 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
428870ff | 4222 | |
6f1ffb06 MA |
4223 | /* |
4224 | * Log the fact that we booted up (so that we can detect if | |
4225 | * we rebooted in the middle of an operation). | |
4226 | */ | |
d5e024cb | 4227 | spa_history_log_version(spa, "open", NULL); |
6f1ffb06 | 4228 | |
9b2266e3 SD |
4229 | spa_restart_removal(spa); |
4230 | spa_spawn_aux_threads(spa); | |
4231 | ||
428870ff BB |
4232 | /* |
4233 | * Delete any inconsistent datasets. | |
9b2266e3 SD |
4234 | * |
4235 | * Note: | |
4236 | * Since we may be issuing deletes for clones here, | |
4237 | * we make sure to do so after we've spawned all the | |
4238 | * auxiliary threads above (from which the livelist | |
4239 | * deletion zthr is part of). | |
428870ff BB |
4240 | */ |
4241 | (void) dmu_objset_find(spa_name(spa), | |
4242 | dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN); | |
4243 | ||
4244 | /* | |
4245 | * Clean up any stale temporary dataset userrefs. | |
4246 | */ | |
4247 | dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool); | |
a1d477c2 | 4248 | |
34dc7c2f BB |
4249 | } |
4250 | ||
4a0ee12a PZ |
4251 | spa_load_note(spa, "LOADED"); |
4252 | ||
428870ff BB |
4253 | return (0); |
4254 | } | |
34dc7c2f | 4255 | |
428870ff | 4256 | static int |
6cb8e530 | 4257 | spa_load_retry(spa_t *spa, spa_load_state_t state) |
428870ff | 4258 | { |
572e2857 BB |
4259 | int mode = spa->spa_mode; |
4260 | ||
428870ff BB |
4261 | spa_unload(spa); |
4262 | spa_deactivate(spa); | |
4263 | ||
dea377c0 | 4264 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg - 1; |
428870ff | 4265 | |
572e2857 | 4266 | spa_activate(spa, mode); |
428870ff BB |
4267 | spa_async_suspend(spa); |
4268 | ||
4a0ee12a PZ |
4269 | spa_load_note(spa, "spa_load_retry: rewind, max txg: %llu", |
4270 | (u_longlong_t)spa->spa_load_max_txg); | |
4271 | ||
6cb8e530 | 4272 | return (spa_load(spa, state, SPA_IMPORT_EXISTING)); |
428870ff BB |
4273 | } |
4274 | ||
9ae529ec CS |
4275 | /* |
4276 | * If spa_load() fails this function will try loading prior txg's. If | |
4277 | * 'state' is SPA_LOAD_RECOVER and one of these loads succeeds the pool | |
4278 | * will be rewound to that txg. If 'state' is not SPA_LOAD_RECOVER this | |
4279 | * function will not rewind the pool and will return the same error as | |
4280 | * spa_load(). | |
4281 | */ | |
428870ff | 4282 | static int |
6cb8e530 PZ |
4283 | spa_load_best(spa_t *spa, spa_load_state_t state, uint64_t max_request, |
4284 | int rewind_flags) | |
428870ff | 4285 | { |
9ae529ec | 4286 | nvlist_t *loadinfo = NULL; |
428870ff BB |
4287 | nvlist_t *config = NULL; |
4288 | int load_error, rewind_error; | |
4289 | uint64_t safe_rewind_txg; | |
4290 | uint64_t min_txg; | |
4291 | ||
4292 | if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) { | |
4293 | spa->spa_load_max_txg = spa->spa_load_txg; | |
4294 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
4295 | } else { | |
4296 | spa->spa_load_max_txg = max_request; | |
dea377c0 MA |
4297 | if (max_request != UINT64_MAX) |
4298 | spa->spa_extreme_rewind = B_TRUE; | |
428870ff BB |
4299 | } |
4300 | ||
6cb8e530 | 4301 | load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING); |
428870ff BB |
4302 | if (load_error == 0) |
4303 | return (0); | |
d2734cce SD |
4304 | if (load_error == ZFS_ERR_NO_CHECKPOINT) { |
4305 | /* | |
4306 | * When attempting checkpoint-rewind on a pool with no | |
4307 | * checkpoint, we should not attempt to load uberblocks | |
4308 | * from previous txgs when spa_load fails. | |
4309 | */ | |
4310 | ASSERT(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT); | |
4311 | return (load_error); | |
4312 | } | |
428870ff BB |
4313 | |
4314 | if (spa->spa_root_vdev != NULL) | |
4315 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); | |
4316 | ||
4317 | spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg; | |
4318 | spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp; | |
4319 | ||
4320 | if (rewind_flags & ZPOOL_NEVER_REWIND) { | |
4321 | nvlist_free(config); | |
4322 | return (load_error); | |
4323 | } | |
4324 | ||
9ae529ec CS |
4325 | if (state == SPA_LOAD_RECOVER) { |
4326 | /* Price of rolling back is discarding txgs, including log */ | |
428870ff | 4327 | spa_set_log_state(spa, SPA_LOG_CLEAR); |
9ae529ec CS |
4328 | } else { |
4329 | /* | |
4330 | * If we aren't rolling back save the load info from our first | |
4331 | * import attempt so that we can restore it after attempting | |
4332 | * to rewind. | |
4333 | */ | |
4334 | loadinfo = spa->spa_load_info; | |
4335 | spa->spa_load_info = fnvlist_alloc(); | |
4336 | } | |
428870ff BB |
4337 | |
4338 | spa->spa_load_max_txg = spa->spa_last_ubsync_txg; | |
4339 | safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE; | |
4340 | min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ? | |
4341 | TXG_INITIAL : safe_rewind_txg; | |
4342 | ||
4343 | /* | |
4344 | * Continue as long as we're finding errors, we're still within | |
4345 | * the acceptable rewind range, and we're still finding uberblocks | |
4346 | */ | |
4347 | while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg && | |
4348 | spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) { | |
4349 | if (spa->spa_load_max_txg < safe_rewind_txg) | |
4350 | spa->spa_extreme_rewind = B_TRUE; | |
6cb8e530 | 4351 | rewind_error = spa_load_retry(spa, state); |
428870ff BB |
4352 | } |
4353 | ||
428870ff BB |
4354 | spa->spa_extreme_rewind = B_FALSE; |
4355 | spa->spa_load_max_txg = UINT64_MAX; | |
4356 | ||
4357 | if (config && (rewind_error || state != SPA_LOAD_RECOVER)) | |
4358 | spa_config_set(spa, config); | |
ee6370a7 | 4359 | else |
4360 | nvlist_free(config); | |
428870ff | 4361 | |
9ae529ec CS |
4362 | if (state == SPA_LOAD_RECOVER) { |
4363 | ASSERT3P(loadinfo, ==, NULL); | |
4364 | return (rewind_error); | |
4365 | } else { | |
4366 | /* Store the rewind info as part of the initial load info */ | |
4367 | fnvlist_add_nvlist(loadinfo, ZPOOL_CONFIG_REWIND_INFO, | |
4368 | spa->spa_load_info); | |
4369 | ||
4370 | /* Restore the initial load info */ | |
4371 | fnvlist_free(spa->spa_load_info); | |
4372 | spa->spa_load_info = loadinfo; | |
4373 | ||
4374 | return (load_error); | |
4375 | } | |
34dc7c2f BB |
4376 | } |
4377 | ||
4378 | /* | |
4379 | * Pool Open/Import | |
4380 | * | |
4381 | * The import case is identical to an open except that the configuration is sent | |
4382 | * down from userland, instead of grabbed from the configuration cache. For the | |
4383 | * case of an open, the pool configuration will exist in the | |
4384 | * POOL_STATE_UNINITIALIZED state. | |
4385 | * | |
4386 | * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
4387 | * the same time open the pool, without having to keep around the spa_t in some | |
4388 | * ambiguous state. | |
4389 | */ | |
4390 | static int | |
428870ff BB |
4391 | spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, |
4392 | nvlist_t **config) | |
34dc7c2f BB |
4393 | { |
4394 | spa_t *spa; | |
572e2857 | 4395 | spa_load_state_t state = SPA_LOAD_OPEN; |
34dc7c2f | 4396 | int error; |
34dc7c2f | 4397 | int locked = B_FALSE; |
526af785 | 4398 | int firstopen = B_FALSE; |
34dc7c2f BB |
4399 | |
4400 | *spapp = NULL; | |
4401 | ||
4402 | /* | |
4403 | * As disgusting as this is, we need to support recursive calls to this | |
4404 | * function because dsl_dir_open() is called during spa_load(), and ends | |
4405 | * up calling spa_open() again. The real fix is to figure out how to | |
4406 | * avoid dsl_dir_open() calling this in the first place. | |
4407 | */ | |
c25b8f99 | 4408 | if (MUTEX_NOT_HELD(&spa_namespace_lock)) { |
34dc7c2f BB |
4409 | mutex_enter(&spa_namespace_lock); |
4410 | locked = B_TRUE; | |
4411 | } | |
4412 | ||
4413 | if ((spa = spa_lookup(pool)) == NULL) { | |
4414 | if (locked) | |
4415 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 4416 | return (SET_ERROR(ENOENT)); |
34dc7c2f | 4417 | } |
428870ff | 4418 | |
34dc7c2f | 4419 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) { |
8a393be3 | 4420 | zpool_load_policy_t policy; |
428870ff | 4421 | |
526af785 PJD |
4422 | firstopen = B_TRUE; |
4423 | ||
8a393be3 | 4424 | zpool_get_load_policy(nvpolicy ? nvpolicy : spa->spa_config, |
428870ff | 4425 | &policy); |
8a393be3 | 4426 | if (policy.zlp_rewind & ZPOOL_DO_REWIND) |
428870ff | 4427 | state = SPA_LOAD_RECOVER; |
34dc7c2f | 4428 | |
fb5f0bc8 | 4429 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 4430 | |
428870ff BB |
4431 | if (state != SPA_LOAD_RECOVER) |
4432 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
6cb8e530 | 4433 | spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE; |
428870ff | 4434 | |
4a0ee12a | 4435 | zfs_dbgmsg("spa_open_common: opening %s", pool); |
8a393be3 PZ |
4436 | error = spa_load_best(spa, state, policy.zlp_txg, |
4437 | policy.zlp_rewind); | |
34dc7c2f BB |
4438 | |
4439 | if (error == EBADF) { | |
4440 | /* | |
4441 | * If vdev_validate() returns failure (indicated by | |
4442 | * EBADF), it indicates that one of the vdevs indicates | |
4443 | * that the pool has been exported or destroyed. If | |
4444 | * this is the case, the config cache is out of sync and | |
4445 | * we should remove the pool from the namespace. | |
4446 | */ | |
34dc7c2f BB |
4447 | spa_unload(spa); |
4448 | spa_deactivate(spa); | |
a1d477c2 | 4449 | spa_write_cachefile(spa, B_TRUE, B_TRUE); |
34dc7c2f | 4450 | spa_remove(spa); |
34dc7c2f BB |
4451 | if (locked) |
4452 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 4453 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
4454 | } |
4455 | ||
4456 | if (error) { | |
4457 | /* | |
4458 | * We can't open the pool, but we still have useful | |
4459 | * information: the state of each vdev after the | |
4460 | * attempted vdev_open(). Return this to the user. | |
4461 | */ | |
572e2857 | 4462 | if (config != NULL && spa->spa_config) { |
428870ff | 4463 | VERIFY(nvlist_dup(spa->spa_config, config, |
79c76d5b | 4464 | KM_SLEEP) == 0); |
572e2857 BB |
4465 | VERIFY(nvlist_add_nvlist(*config, |
4466 | ZPOOL_CONFIG_LOAD_INFO, | |
4467 | spa->spa_load_info) == 0); | |
4468 | } | |
34dc7c2f BB |
4469 | spa_unload(spa); |
4470 | spa_deactivate(spa); | |
428870ff | 4471 | spa->spa_last_open_failed = error; |
34dc7c2f BB |
4472 | if (locked) |
4473 | mutex_exit(&spa_namespace_lock); | |
4474 | *spapp = NULL; | |
4475 | return (error); | |
34dc7c2f | 4476 | } |
34dc7c2f BB |
4477 | } |
4478 | ||
4479 | spa_open_ref(spa, tag); | |
4480 | ||
b128c09f | 4481 | if (config != NULL) |
34dc7c2f | 4482 | *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f | 4483 | |
572e2857 BB |
4484 | /* |
4485 | * If we've recovered the pool, pass back any information we | |
4486 | * gathered while doing the load. | |
4487 | */ | |
4488 | if (state == SPA_LOAD_RECOVER) { | |
4489 | VERIFY(nvlist_add_nvlist(*config, ZPOOL_CONFIG_LOAD_INFO, | |
4490 | spa->spa_load_info) == 0); | |
4491 | } | |
4492 | ||
428870ff BB |
4493 | if (locked) { |
4494 | spa->spa_last_open_failed = 0; | |
4495 | spa->spa_last_ubsync_txg = 0; | |
4496 | spa->spa_load_txg = 0; | |
4497 | mutex_exit(&spa_namespace_lock); | |
4498 | } | |
4499 | ||
526af785 | 4500 | if (firstopen) |
a0bd735a | 4501 | zvol_create_minors(spa, spa_name(spa), B_TRUE); |
526af785 | 4502 | |
428870ff BB |
4503 | *spapp = spa; |
4504 | ||
34dc7c2f BB |
4505 | return (0); |
4506 | } | |
4507 | ||
428870ff BB |
4508 | int |
4509 | spa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy, | |
4510 | nvlist_t **config) | |
4511 | { | |
4512 | return (spa_open_common(name, spapp, tag, policy, config)); | |
4513 | } | |
4514 | ||
34dc7c2f BB |
4515 | int |
4516 | spa_open(const char *name, spa_t **spapp, void *tag) | |
4517 | { | |
428870ff | 4518 | return (spa_open_common(name, spapp, tag, NULL, NULL)); |
34dc7c2f BB |
4519 | } |
4520 | ||
4521 | /* | |
4522 | * Lookup the given spa_t, incrementing the inject count in the process, | |
4523 | * preventing it from being exported or destroyed. | |
4524 | */ | |
4525 | spa_t * | |
4526 | spa_inject_addref(char *name) | |
4527 | { | |
4528 | spa_t *spa; | |
4529 | ||
4530 | mutex_enter(&spa_namespace_lock); | |
4531 | if ((spa = spa_lookup(name)) == NULL) { | |
4532 | mutex_exit(&spa_namespace_lock); | |
4533 | return (NULL); | |
4534 | } | |
4535 | spa->spa_inject_ref++; | |
4536 | mutex_exit(&spa_namespace_lock); | |
4537 | ||
4538 | return (spa); | |
4539 | } | |
4540 | ||
4541 | void | |
4542 | spa_inject_delref(spa_t *spa) | |
4543 | { | |
4544 | mutex_enter(&spa_namespace_lock); | |
4545 | spa->spa_inject_ref--; | |
4546 | mutex_exit(&spa_namespace_lock); | |
4547 | } | |
4548 | ||
4549 | /* | |
4550 | * Add spares device information to the nvlist. | |
4551 | */ | |
4552 | static void | |
4553 | spa_add_spares(spa_t *spa, nvlist_t *config) | |
4554 | { | |
4555 | nvlist_t **spares; | |
4556 | uint_t i, nspares; | |
4557 | nvlist_t *nvroot; | |
4558 | uint64_t guid; | |
4559 | vdev_stat_t *vs; | |
4560 | uint_t vsc; | |
4561 | uint64_t pool; | |
4562 | ||
9babb374 BB |
4563 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
4564 | ||
34dc7c2f BB |
4565 | if (spa->spa_spares.sav_count == 0) |
4566 | return; | |
4567 | ||
4568 | VERIFY(nvlist_lookup_nvlist(config, | |
4569 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
4570 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
4571 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
4572 | if (nspares != 0) { | |
4573 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
4574 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
4575 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
4576 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
4577 | ||
4578 | /* | |
4579 | * Go through and find any spares which have since been | |
4580 | * repurposed as an active spare. If this is the case, update | |
4581 | * their status appropriately. | |
4582 | */ | |
4583 | for (i = 0; i < nspares; i++) { | |
4584 | VERIFY(nvlist_lookup_uint64(spares[i], | |
4585 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
b128c09f BB |
4586 | if (spa_spare_exists(guid, &pool, NULL) && |
4587 | pool != 0ULL) { | |
34dc7c2f | 4588 | VERIFY(nvlist_lookup_uint64_array( |
428870ff | 4589 | spares[i], ZPOOL_CONFIG_VDEV_STATS, |
34dc7c2f BB |
4590 | (uint64_t **)&vs, &vsc) == 0); |
4591 | vs->vs_state = VDEV_STATE_CANT_OPEN; | |
4592 | vs->vs_aux = VDEV_AUX_SPARED; | |
4593 | } | |
4594 | } | |
4595 | } | |
4596 | } | |
4597 | ||
4598 | /* | |
4599 | * Add l2cache device information to the nvlist, including vdev stats. | |
4600 | */ | |
4601 | static void | |
4602 | spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
4603 | { | |
4604 | nvlist_t **l2cache; | |
4605 | uint_t i, j, nl2cache; | |
4606 | nvlist_t *nvroot; | |
4607 | uint64_t guid; | |
4608 | vdev_t *vd; | |
4609 | vdev_stat_t *vs; | |
4610 | uint_t vsc; | |
4611 | ||
9babb374 BB |
4612 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
4613 | ||
34dc7c2f BB |
4614 | if (spa->spa_l2cache.sav_count == 0) |
4615 | return; | |
4616 | ||
34dc7c2f BB |
4617 | VERIFY(nvlist_lookup_nvlist(config, |
4618 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
4619 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
4620 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
4621 | if (nl2cache != 0) { | |
4622 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
4623 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
4624 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
4625 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
4626 | ||
4627 | /* | |
4628 | * Update level 2 cache device stats. | |
4629 | */ | |
4630 | ||
4631 | for (i = 0; i < nl2cache; i++) { | |
4632 | VERIFY(nvlist_lookup_uint64(l2cache[i], | |
4633 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
4634 | ||
4635 | vd = NULL; | |
4636 | for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
4637 | if (guid == | |
4638 | spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
4639 | vd = spa->spa_l2cache.sav_vdevs[j]; | |
4640 | break; | |
4641 | } | |
4642 | } | |
4643 | ASSERT(vd != NULL); | |
4644 | ||
4645 | VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
428870ff BB |
4646 | ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) |
4647 | == 0); | |
34dc7c2f | 4648 | vdev_get_stats(vd, vs); |
193a37cb TH |
4649 | vdev_config_generate_stats(vd, l2cache[i]); |
4650 | ||
34dc7c2f BB |
4651 | } |
4652 | } | |
34dc7c2f BB |
4653 | } |
4654 | ||
9ae529ec | 4655 | static void |
417104bd | 4656 | spa_feature_stats_from_disk(spa_t *spa, nvlist_t *features) |
9ae529ec | 4657 | { |
9ae529ec CS |
4658 | zap_cursor_t zc; |
4659 | zap_attribute_t za; | |
4660 | ||
9ae529ec CS |
4661 | if (spa->spa_feat_for_read_obj != 0) { |
4662 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
4663 | spa->spa_feat_for_read_obj); | |
4664 | zap_cursor_retrieve(&zc, &za) == 0; | |
4665 | zap_cursor_advance(&zc)) { | |
4666 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
4667 | za.za_num_integers == 1); | |
417104bd | 4668 | VERIFY0(nvlist_add_uint64(features, za.za_name, |
9ae529ec CS |
4669 | za.za_first_integer)); |
4670 | } | |
4671 | zap_cursor_fini(&zc); | |
4672 | } | |
4673 | ||
4674 | if (spa->spa_feat_for_write_obj != 0) { | |
4675 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
4676 | spa->spa_feat_for_write_obj); | |
4677 | zap_cursor_retrieve(&zc, &za) == 0; | |
4678 | zap_cursor_advance(&zc)) { | |
4679 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
4680 | za.za_num_integers == 1); | |
417104bd | 4681 | VERIFY0(nvlist_add_uint64(features, za.za_name, |
9ae529ec CS |
4682 | za.za_first_integer)); |
4683 | } | |
4684 | zap_cursor_fini(&zc); | |
4685 | } | |
417104bd NB |
4686 | } |
4687 | ||
4688 | static void | |
4689 | spa_feature_stats_from_cache(spa_t *spa, nvlist_t *features) | |
4690 | { | |
4691 | int i; | |
4692 | ||
4693 | for (i = 0; i < SPA_FEATURES; i++) { | |
4694 | zfeature_info_t feature = spa_feature_table[i]; | |
4695 | uint64_t refcount; | |
4696 | ||
4697 | if (feature_get_refcount(spa, &feature, &refcount) != 0) | |
4698 | continue; | |
4699 | ||
4700 | VERIFY0(nvlist_add_uint64(features, feature.fi_guid, refcount)); | |
4701 | } | |
4702 | } | |
4703 | ||
4704 | /* | |
4705 | * Store a list of pool features and their reference counts in the | |
4706 | * config. | |
4707 | * | |
4708 | * The first time this is called on a spa, allocate a new nvlist, fetch | |
4709 | * the pool features and reference counts from disk, then save the list | |
4710 | * in the spa. In subsequent calls on the same spa use the saved nvlist | |
4711 | * and refresh its values from the cached reference counts. This | |
4712 | * ensures we don't block here on I/O on a suspended pool so 'zpool | |
4713 | * clear' can resume the pool. | |
4714 | */ | |
4715 | static void | |
4716 | spa_add_feature_stats(spa_t *spa, nvlist_t *config) | |
4717 | { | |
4eb30c68 | 4718 | nvlist_t *features; |
417104bd NB |
4719 | |
4720 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); | |
4721 | ||
4eb30c68 NB |
4722 | mutex_enter(&spa->spa_feat_stats_lock); |
4723 | features = spa->spa_feat_stats; | |
4724 | ||
417104bd NB |
4725 | if (features != NULL) { |
4726 | spa_feature_stats_from_cache(spa, features); | |
4727 | } else { | |
4728 | VERIFY0(nvlist_alloc(&features, NV_UNIQUE_NAME, KM_SLEEP)); | |
4729 | spa->spa_feat_stats = features; | |
4730 | spa_feature_stats_from_disk(spa, features); | |
4731 | } | |
9ae529ec | 4732 | |
417104bd NB |
4733 | VERIFY0(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS, |
4734 | features)); | |
4eb30c68 NB |
4735 | |
4736 | mutex_exit(&spa->spa_feat_stats_lock); | |
9ae529ec CS |
4737 | } |
4738 | ||
34dc7c2f | 4739 | int |
9ae529ec CS |
4740 | spa_get_stats(const char *name, nvlist_t **config, |
4741 | char *altroot, size_t buflen) | |
34dc7c2f BB |
4742 | { |
4743 | int error; | |
4744 | spa_t *spa; | |
4745 | ||
4746 | *config = NULL; | |
428870ff | 4747 | error = spa_open_common(name, &spa, FTAG, NULL, config); |
34dc7c2f | 4748 | |
9babb374 BB |
4749 | if (spa != NULL) { |
4750 | /* | |
4751 | * This still leaves a window of inconsistency where the spares | |
4752 | * or l2cache devices could change and the config would be | |
4753 | * self-inconsistent. | |
4754 | */ | |
4755 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
34dc7c2f | 4756 | |
9babb374 | 4757 | if (*config != NULL) { |
572e2857 BB |
4758 | uint64_t loadtimes[2]; |
4759 | ||
4760 | loadtimes[0] = spa->spa_loaded_ts.tv_sec; | |
4761 | loadtimes[1] = spa->spa_loaded_ts.tv_nsec; | |
4762 | VERIFY(nvlist_add_uint64_array(*config, | |
4763 | ZPOOL_CONFIG_LOADED_TIME, loadtimes, 2) == 0); | |
4764 | ||
b128c09f | 4765 | VERIFY(nvlist_add_uint64(*config, |
9babb374 BB |
4766 | ZPOOL_CONFIG_ERRCOUNT, |
4767 | spa_get_errlog_size(spa)) == 0); | |
4768 | ||
cec3a0a1 | 4769 | if (spa_suspended(spa)) { |
9babb374 BB |
4770 | VERIFY(nvlist_add_uint64(*config, |
4771 | ZPOOL_CONFIG_SUSPENDED, | |
4772 | spa->spa_failmode) == 0); | |
cec3a0a1 OF |
4773 | VERIFY(nvlist_add_uint64(*config, |
4774 | ZPOOL_CONFIG_SUSPENDED_REASON, | |
4775 | spa->spa_suspended) == 0); | |
4776 | } | |
b128c09f | 4777 | |
9babb374 BB |
4778 | spa_add_spares(spa, *config); |
4779 | spa_add_l2cache(spa, *config); | |
9ae529ec | 4780 | spa_add_feature_stats(spa, *config); |
9babb374 | 4781 | } |
34dc7c2f BB |
4782 | } |
4783 | ||
4784 | /* | |
4785 | * We want to get the alternate root even for faulted pools, so we cheat | |
4786 | * and call spa_lookup() directly. | |
4787 | */ | |
4788 | if (altroot) { | |
4789 | if (spa == NULL) { | |
4790 | mutex_enter(&spa_namespace_lock); | |
4791 | spa = spa_lookup(name); | |
4792 | if (spa) | |
4793 | spa_altroot(spa, altroot, buflen); | |
4794 | else | |
4795 | altroot[0] = '\0'; | |
4796 | spa = NULL; | |
4797 | mutex_exit(&spa_namespace_lock); | |
4798 | } else { | |
4799 | spa_altroot(spa, altroot, buflen); | |
4800 | } | |
4801 | } | |
4802 | ||
9babb374 BB |
4803 | if (spa != NULL) { |
4804 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
34dc7c2f | 4805 | spa_close(spa, FTAG); |
9babb374 | 4806 | } |
34dc7c2f BB |
4807 | |
4808 | return (error); | |
4809 | } | |
4810 | ||
4811 | /* | |
4812 | * Validate that the auxiliary device array is well formed. We must have an | |
4813 | * array of nvlists, each which describes a valid leaf vdev. If this is an | |
4814 | * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
4815 | * specified, as long as they are well-formed. | |
4816 | */ | |
4817 | static int | |
4818 | spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, | |
4819 | spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
4820 | vdev_labeltype_t label) | |
4821 | { | |
4822 | nvlist_t **dev; | |
4823 | uint_t i, ndev; | |
4824 | vdev_t *vd; | |
4825 | int error; | |
4826 | ||
b128c09f BB |
4827 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
4828 | ||
34dc7c2f BB |
4829 | /* |
4830 | * It's acceptable to have no devs specified. | |
4831 | */ | |
4832 | if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) | |
4833 | return (0); | |
4834 | ||
4835 | if (ndev == 0) | |
2e528b49 | 4836 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
4837 | |
4838 | /* | |
4839 | * Make sure the pool is formatted with a version that supports this | |
4840 | * device type. | |
4841 | */ | |
4842 | if (spa_version(spa) < version) | |
2e528b49 | 4843 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
4844 | |
4845 | /* | |
4846 | * Set the pending device list so we correctly handle device in-use | |
4847 | * checking. | |
4848 | */ | |
4849 | sav->sav_pending = dev; | |
4850 | sav->sav_npending = ndev; | |
4851 | ||
4852 | for (i = 0; i < ndev; i++) { | |
4853 | if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
4854 | mode)) != 0) | |
4855 | goto out; | |
4856 | ||
4857 | if (!vd->vdev_ops->vdev_op_leaf) { | |
4858 | vdev_free(vd); | |
2e528b49 | 4859 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
4860 | goto out; |
4861 | } | |
4862 | ||
34dc7c2f BB |
4863 | vd->vdev_top = vd; |
4864 | ||
4865 | if ((error = vdev_open(vd)) == 0 && | |
4866 | (error = vdev_label_init(vd, crtxg, label)) == 0) { | |
4867 | VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
4868 | vd->vdev_guid) == 0); | |
4869 | } | |
4870 | ||
4871 | vdev_free(vd); | |
4872 | ||
4873 | if (error && | |
4874 | (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
4875 | goto out; | |
4876 | else | |
4877 | error = 0; | |
4878 | } | |
4879 | ||
4880 | out: | |
4881 | sav->sav_pending = NULL; | |
4882 | sav->sav_npending = 0; | |
4883 | return (error); | |
4884 | } | |
4885 | ||
4886 | static int | |
4887 | spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
4888 | { | |
4889 | int error; | |
4890 | ||
b128c09f BB |
4891 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
4892 | ||
34dc7c2f BB |
4893 | if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, |
4894 | &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
4895 | VDEV_LABEL_SPARE)) != 0) { | |
4896 | return (error); | |
4897 | } | |
4898 | ||
4899 | return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
4900 | &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
4901 | VDEV_LABEL_L2CACHE)); | |
4902 | } | |
4903 | ||
4904 | static void | |
4905 | spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
4906 | const char *config) | |
4907 | { | |
4908 | int i; | |
4909 | ||
4910 | if (sav->sav_config != NULL) { | |
4911 | nvlist_t **olddevs; | |
4912 | uint_t oldndevs; | |
4913 | nvlist_t **newdevs; | |
4914 | ||
4915 | /* | |
4e33ba4c | 4916 | * Generate new dev list by concatenating with the |
34dc7c2f BB |
4917 | * current dev list. |
4918 | */ | |
4919 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
4920 | &olddevs, &oldndevs) == 0); | |
4921 | ||
4922 | newdevs = kmem_alloc(sizeof (void *) * | |
79c76d5b | 4923 | (ndevs + oldndevs), KM_SLEEP); |
34dc7c2f BB |
4924 | for (i = 0; i < oldndevs; i++) |
4925 | VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
79c76d5b | 4926 | KM_SLEEP) == 0); |
34dc7c2f BB |
4927 | for (i = 0; i < ndevs; i++) |
4928 | VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
79c76d5b | 4929 | KM_SLEEP) == 0); |
34dc7c2f BB |
4930 | |
4931 | VERIFY(nvlist_remove(sav->sav_config, config, | |
4932 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
4933 | ||
4934 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
4935 | config, newdevs, ndevs + oldndevs) == 0); | |
4936 | for (i = 0; i < oldndevs + ndevs; i++) | |
4937 | nvlist_free(newdevs[i]); | |
4938 | kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
4939 | } else { | |
4940 | /* | |
4941 | * Generate a new dev list. | |
4942 | */ | |
4943 | VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
79c76d5b | 4944 | KM_SLEEP) == 0); |
34dc7c2f BB |
4945 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, |
4946 | devs, ndevs) == 0); | |
4947 | } | |
4948 | } | |
4949 | ||
4950 | /* | |
4951 | * Stop and drop level 2 ARC devices | |
4952 | */ | |
4953 | void | |
4954 | spa_l2cache_drop(spa_t *spa) | |
4955 | { | |
4956 | vdev_t *vd; | |
4957 | int i; | |
4958 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
4959 | ||
4960 | for (i = 0; i < sav->sav_count; i++) { | |
4961 | uint64_t pool; | |
4962 | ||
4963 | vd = sav->sav_vdevs[i]; | |
4964 | ASSERT(vd != NULL); | |
4965 | ||
fb5f0bc8 BB |
4966 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
4967 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 4968 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
4969 | } |
4970 | } | |
4971 | ||
b5256303 TC |
4972 | /* |
4973 | * Verify encryption parameters for spa creation. If we are encrypting, we must | |
4974 | * have the encryption feature flag enabled. | |
4975 | */ | |
4976 | static int | |
4977 | spa_create_check_encryption_params(dsl_crypto_params_t *dcp, | |
4978 | boolean_t has_encryption) | |
4979 | { | |
4980 | if (dcp->cp_crypt != ZIO_CRYPT_OFF && | |
4981 | dcp->cp_crypt != ZIO_CRYPT_INHERIT && | |
4982 | !has_encryption) | |
4983 | return (SET_ERROR(ENOTSUP)); | |
4984 | ||
1fff937a | 4985 | return (dmu_objset_create_crypt_check(NULL, dcp, NULL)); |
b5256303 TC |
4986 | } |
4987 | ||
34dc7c2f BB |
4988 | /* |
4989 | * Pool Creation | |
4990 | */ | |
4991 | int | |
4992 | spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, | |
b5256303 | 4993 | nvlist_t *zplprops, dsl_crypto_params_t *dcp) |
34dc7c2f BB |
4994 | { |
4995 | spa_t *spa; | |
4996 | char *altroot = NULL; | |
4997 | vdev_t *rvd; | |
4998 | dsl_pool_t *dp; | |
4999 | dmu_tx_t *tx; | |
9babb374 | 5000 | int error = 0; |
34dc7c2f BB |
5001 | uint64_t txg = TXG_INITIAL; |
5002 | nvlist_t **spares, **l2cache; | |
5003 | uint_t nspares, nl2cache; | |
52ce99dd | 5004 | uint64_t version, obj; |
9ae529ec | 5005 | boolean_t has_features; |
b5256303 TC |
5006 | boolean_t has_encryption; |
5007 | spa_feature_t feat; | |
5008 | char *feat_name; | |
83e9986f RY |
5009 | char *poolname; |
5010 | nvlist_t *nvl; | |
5011 | ||
cc99f275 DB |
5012 | if (props == NULL || |
5013 | nvlist_lookup_string(props, "tname", &poolname) != 0) | |
83e9986f | 5014 | poolname = (char *)pool; |
34dc7c2f BB |
5015 | |
5016 | /* | |
5017 | * If this pool already exists, return failure. | |
5018 | */ | |
5019 | mutex_enter(&spa_namespace_lock); | |
83e9986f | 5020 | if (spa_lookup(poolname) != NULL) { |
34dc7c2f | 5021 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 5022 | return (SET_ERROR(EEXIST)); |
34dc7c2f BB |
5023 | } |
5024 | ||
5025 | /* | |
5026 | * Allocate a new spa_t structure. | |
5027 | */ | |
83e9986f RY |
5028 | nvl = fnvlist_alloc(); |
5029 | fnvlist_add_string(nvl, ZPOOL_CONFIG_POOL_NAME, pool); | |
34dc7c2f BB |
5030 | (void) nvlist_lookup_string(props, |
5031 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
83e9986f RY |
5032 | spa = spa_add(poolname, nvl, altroot); |
5033 | fnvlist_free(nvl); | |
fb5f0bc8 | 5034 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 5035 | |
34dc7c2f | 5036 | if (props && (error = spa_prop_validate(spa, props))) { |
34dc7c2f BB |
5037 | spa_deactivate(spa); |
5038 | spa_remove(spa); | |
b128c09f | 5039 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
5040 | return (error); |
5041 | } | |
5042 | ||
83e9986f RY |
5043 | /* |
5044 | * Temporary pool names should never be written to disk. | |
5045 | */ | |
5046 | if (poolname != pool) | |
5047 | spa->spa_import_flags |= ZFS_IMPORT_TEMP_NAME; | |
5048 | ||
9ae529ec | 5049 | has_features = B_FALSE; |
b5256303 | 5050 | has_encryption = B_FALSE; |
1c27024e | 5051 | for (nvpair_t *elem = nvlist_next_nvpair(props, NULL); |
9ae529ec | 5052 | elem != NULL; elem = nvlist_next_nvpair(props, elem)) { |
b5256303 | 5053 | if (zpool_prop_feature(nvpair_name(elem))) { |
9ae529ec | 5054 | has_features = B_TRUE; |
b5256303 TC |
5055 | |
5056 | feat_name = strchr(nvpair_name(elem), '@') + 1; | |
5057 | VERIFY0(zfeature_lookup_name(feat_name, &feat)); | |
5058 | if (feat == SPA_FEATURE_ENCRYPTION) | |
5059 | has_encryption = B_TRUE; | |
5060 | } | |
5061 | } | |
5062 | ||
5063 | /* verify encryption params, if they were provided */ | |
5064 | if (dcp != NULL) { | |
5065 | error = spa_create_check_encryption_params(dcp, has_encryption); | |
5066 | if (error != 0) { | |
5067 | spa_deactivate(spa); | |
5068 | spa_remove(spa); | |
5069 | mutex_exit(&spa_namespace_lock); | |
5070 | return (error); | |
5071 | } | |
9ae529ec CS |
5072 | } |
5073 | ||
5074 | if (has_features || nvlist_lookup_uint64(props, | |
5075 | zpool_prop_to_name(ZPOOL_PROP_VERSION), &version) != 0) { | |
34dc7c2f | 5076 | version = SPA_VERSION; |
9ae529ec CS |
5077 | } |
5078 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); | |
428870ff BB |
5079 | |
5080 | spa->spa_first_txg = txg; | |
5081 | spa->spa_uberblock.ub_txg = txg - 1; | |
34dc7c2f BB |
5082 | spa->spa_uberblock.ub_version = version; |
5083 | spa->spa_ubsync = spa->spa_uberblock; | |
3dfb57a3 | 5084 | spa->spa_load_state = SPA_LOAD_CREATE; |
a1d477c2 MA |
5085 | spa->spa_removing_phys.sr_state = DSS_NONE; |
5086 | spa->spa_removing_phys.sr_removing_vdev = -1; | |
5087 | spa->spa_removing_phys.sr_prev_indirect_vdev = -1; | |
34dc7c2f | 5088 | |
9babb374 BB |
5089 | /* |
5090 | * Create "The Godfather" zio to hold all async IOs | |
5091 | */ | |
e022864d MA |
5092 | spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *), |
5093 | KM_SLEEP); | |
1c27024e | 5094 | for (int i = 0; i < max_ncpus; i++) { |
e022864d MA |
5095 | spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, |
5096 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | | |
5097 | ZIO_FLAG_GODFATHER); | |
5098 | } | |
9babb374 | 5099 | |
34dc7c2f BB |
5100 | /* |
5101 | * Create the root vdev. | |
5102 | */ | |
b128c09f | 5103 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5104 | |
5105 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); | |
5106 | ||
5107 | ASSERT(error != 0 || rvd != NULL); | |
5108 | ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
5109 | ||
5110 | if (error == 0 && !zfs_allocatable_devs(nvroot)) | |
2e528b49 | 5111 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
5112 | |
5113 | if (error == 0 && | |
5114 | (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
5115 | (error = spa_validate_aux(spa, nvroot, txg, | |
5116 | VDEV_ALLOC_ADD)) == 0) { | |
cc99f275 DB |
5117 | /* |
5118 | * instantiate the metaslab groups (this will dirty the vdevs) | |
5119 | * we can no longer error exit past this point | |
5120 | */ | |
5121 | for (int c = 0; error == 0 && c < rvd->vdev_children; c++) { | |
5122 | vdev_t *vd = rvd->vdev_child[c]; | |
5123 | ||
5124 | vdev_metaslab_set_size(vd); | |
5125 | vdev_expand(vd, txg); | |
9babb374 | 5126 | } |
34dc7c2f BB |
5127 | } |
5128 | ||
b128c09f | 5129 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5130 | |
5131 | if (error != 0) { | |
5132 | spa_unload(spa); | |
5133 | spa_deactivate(spa); | |
5134 | spa_remove(spa); | |
5135 | mutex_exit(&spa_namespace_lock); | |
5136 | return (error); | |
5137 | } | |
5138 | ||
5139 | /* | |
5140 | * Get the list of spares, if specified. | |
5141 | */ | |
5142 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
5143 | &spares, &nspares) == 0) { | |
5144 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, | |
79c76d5b | 5145 | KM_SLEEP) == 0); |
34dc7c2f BB |
5146 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
5147 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 5148 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5149 | spa_load_spares(spa); |
b128c09f | 5150 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5151 | spa->spa_spares.sav_sync = B_TRUE; |
5152 | } | |
5153 | ||
5154 | /* | |
5155 | * Get the list of level 2 cache devices, if specified. | |
5156 | */ | |
5157 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
5158 | &l2cache, &nl2cache) == 0) { | |
5159 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
79c76d5b | 5160 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
5161 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
5162 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 5163 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5164 | spa_load_l2cache(spa); |
b128c09f | 5165 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5166 | spa->spa_l2cache.sav_sync = B_TRUE; |
5167 | } | |
5168 | ||
9ae529ec | 5169 | spa->spa_is_initializing = B_TRUE; |
b5256303 | 5170 | spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, dcp, txg); |
9ae529ec | 5171 | spa->spa_is_initializing = B_FALSE; |
34dc7c2f | 5172 | |
428870ff BB |
5173 | /* |
5174 | * Create DDTs (dedup tables). | |
5175 | */ | |
5176 | ddt_create(spa); | |
5177 | ||
5178 | spa_update_dspace(spa); | |
5179 | ||
34dc7c2f BB |
5180 | tx = dmu_tx_create_assigned(dp, txg); |
5181 | ||
d5e024cb BB |
5182 | /* |
5183 | * Create the pool's history object. | |
5184 | */ | |
5185 | if (version >= SPA_VERSION_ZPOOL_HISTORY && !spa->spa_history) | |
5186 | spa_history_create_obj(spa, tx); | |
5187 | ||
5188 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_CREATE); | |
5189 | spa_history_log_version(spa, "create", tx); | |
5190 | ||
34dc7c2f BB |
5191 | /* |
5192 | * Create the pool config object. | |
5193 | */ | |
5194 | spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
b128c09f | 5195 | DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, |
34dc7c2f BB |
5196 | DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); |
5197 | ||
5198 | if (zap_add(spa->spa_meta_objset, | |
5199 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
5200 | sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { | |
5201 | cmn_err(CE_PANIC, "failed to add pool config"); | |
5202 | } | |
5203 | ||
428870ff BB |
5204 | if (zap_add(spa->spa_meta_objset, |
5205 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION, | |
5206 | sizeof (uint64_t), 1, &version, tx) != 0) { | |
5207 | cmn_err(CE_PANIC, "failed to add pool version"); | |
5208 | } | |
5209 | ||
34dc7c2f BB |
5210 | /* Newly created pools with the right version are always deflated. */ |
5211 | if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
5212 | spa->spa_deflate = TRUE; | |
5213 | if (zap_add(spa->spa_meta_objset, | |
5214 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
5215 | sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
5216 | cmn_err(CE_PANIC, "failed to add deflate"); | |
5217 | } | |
5218 | } | |
5219 | ||
5220 | /* | |
428870ff | 5221 | * Create the deferred-free bpobj. Turn off compression |
34dc7c2f BB |
5222 | * because sync-to-convergence takes longer if the blocksize |
5223 | * keeps changing. | |
5224 | */ | |
428870ff BB |
5225 | obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx); |
5226 | dmu_object_set_compress(spa->spa_meta_objset, obj, | |
34dc7c2f | 5227 | ZIO_COMPRESS_OFF, tx); |
34dc7c2f | 5228 | if (zap_add(spa->spa_meta_objset, |
428870ff BB |
5229 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ, |
5230 | sizeof (uint64_t), 1, &obj, tx) != 0) { | |
5231 | cmn_err(CE_PANIC, "failed to add bpobj"); | |
34dc7c2f | 5232 | } |
428870ff BB |
5233 | VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj, |
5234 | spa->spa_meta_objset, obj)); | |
34dc7c2f | 5235 | |
3c67d83a TH |
5236 | /* |
5237 | * Generate some random noise for salted checksums to operate on. | |
5238 | */ | |
5239 | (void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes, | |
5240 | sizeof (spa->spa_cksum_salt.zcs_bytes)); | |
5241 | ||
34dc7c2f BB |
5242 | /* |
5243 | * Set pool properties. | |
5244 | */ | |
5245 | spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
5246 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
5247 | spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); | |
9babb374 | 5248 | spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND); |
379ca9cf | 5249 | spa->spa_multihost = zpool_prop_default_numeric(ZPOOL_PROP_MULTIHOST); |
428870ff | 5250 | |
d164b209 BB |
5251 | if (props != NULL) { |
5252 | spa_configfile_set(spa, props, B_FALSE); | |
13fe0198 | 5253 | spa_sync_props(props, tx); |
d164b209 | 5254 | } |
34dc7c2f BB |
5255 | |
5256 | dmu_tx_commit(tx); | |
5257 | ||
5258 | spa->spa_sync_on = B_TRUE; | |
b5256303 | 5259 | txg_sync_start(dp); |
379ca9cf | 5260 | mmp_thread_start(spa); |
b5256303 | 5261 | txg_wait_synced(dp, txg); |
34dc7c2f | 5262 | |
9d5b5245 SD |
5263 | spa_spawn_aux_threads(spa); |
5264 | ||
a1d477c2 | 5265 | spa_write_cachefile(spa, B_FALSE, B_TRUE); |
34dc7c2f | 5266 | |
0c66c32d JG |
5267 | /* |
5268 | * Don't count references from objsets that are already closed | |
5269 | * and are making their way through the eviction process. | |
5270 | */ | |
5271 | spa_evicting_os_wait(spa); | |
424fd7c3 | 5272 | spa->spa_minref = zfs_refcount_count(&spa->spa_refcount); |
3dfb57a3 | 5273 | spa->spa_load_state = SPA_LOAD_NONE; |
b128c09f | 5274 | |
d164b209 BB |
5275 | mutex_exit(&spa_namespace_lock); |
5276 | ||
34dc7c2f BB |
5277 | return (0); |
5278 | } | |
5279 | ||
9babb374 BB |
5280 | /* |
5281 | * Import a non-root pool into the system. | |
5282 | */ | |
5283 | int | |
13fe0198 | 5284 | spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) |
34dc7c2f BB |
5285 | { |
5286 | spa_t *spa; | |
5287 | char *altroot = NULL; | |
428870ff | 5288 | spa_load_state_t state = SPA_LOAD_IMPORT; |
8a393be3 | 5289 | zpool_load_policy_t policy; |
572e2857 BB |
5290 | uint64_t mode = spa_mode_global; |
5291 | uint64_t readonly = B_FALSE; | |
9babb374 | 5292 | int error; |
34dc7c2f BB |
5293 | nvlist_t *nvroot; |
5294 | nvlist_t **spares, **l2cache; | |
5295 | uint_t nspares, nl2cache; | |
34dc7c2f BB |
5296 | |
5297 | /* | |
5298 | * If a pool with this name exists, return failure. | |
5299 | */ | |
5300 | mutex_enter(&spa_namespace_lock); | |
428870ff | 5301 | if (spa_lookup(pool) != NULL) { |
9babb374 | 5302 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 5303 | return (SET_ERROR(EEXIST)); |
34dc7c2f BB |
5304 | } |
5305 | ||
5306 | /* | |
5307 | * Create and initialize the spa structure. | |
5308 | */ | |
5309 | (void) nvlist_lookup_string(props, | |
5310 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
572e2857 BB |
5311 | (void) nvlist_lookup_uint64(props, |
5312 | zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly); | |
5313 | if (readonly) | |
5314 | mode = FREAD; | |
428870ff | 5315 | spa = spa_add(pool, config, altroot); |
572e2857 BB |
5316 | spa->spa_import_flags = flags; |
5317 | ||
5318 | /* | |
5319 | * Verbatim import - Take a pool and insert it into the namespace | |
5320 | * as if it had been loaded at boot. | |
5321 | */ | |
5322 | if (spa->spa_import_flags & ZFS_IMPORT_VERBATIM) { | |
5323 | if (props != NULL) | |
5324 | spa_configfile_set(spa, props, B_FALSE); | |
5325 | ||
a1d477c2 | 5326 | spa_write_cachefile(spa, B_FALSE, B_TRUE); |
12fa0466 | 5327 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT); |
4a0ee12a | 5328 | zfs_dbgmsg("spa_import: verbatim import of %s", pool); |
572e2857 | 5329 | mutex_exit(&spa_namespace_lock); |
572e2857 BB |
5330 | return (0); |
5331 | } | |
5332 | ||
5333 | spa_activate(spa, mode); | |
34dc7c2f | 5334 | |
9babb374 BB |
5335 | /* |
5336 | * Don't start async tasks until we know everything is healthy. | |
5337 | */ | |
5338 | spa_async_suspend(spa); | |
b128c09f | 5339 | |
8a393be3 PZ |
5340 | zpool_get_load_policy(config, &policy); |
5341 | if (policy.zlp_rewind & ZPOOL_DO_REWIND) | |
572e2857 BB |
5342 | state = SPA_LOAD_RECOVER; |
5343 | ||
6cb8e530 | 5344 | spa->spa_config_source = SPA_CONFIG_SRC_TRYIMPORT; |
572e2857 | 5345 | |
6cb8e530 PZ |
5346 | if (state != SPA_LOAD_RECOVER) { |
5347 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
5348 | zfs_dbgmsg("spa_import: importing %s", pool); | |
5349 | } else { | |
5350 | zfs_dbgmsg("spa_import: importing %s, max_txg=%lld " | |
8a393be3 | 5351 | "(RECOVERY MODE)", pool, (longlong_t)policy.zlp_txg); |
6cb8e530 | 5352 | } |
8a393be3 | 5353 | error = spa_load_best(spa, state, policy.zlp_txg, policy.zlp_rewind); |
428870ff BB |
5354 | |
5355 | /* | |
572e2857 BB |
5356 | * Propagate anything learned while loading the pool and pass it |
5357 | * back to caller (i.e. rewind info, missing devices, etc). | |
428870ff | 5358 | */ |
572e2857 BB |
5359 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
5360 | spa->spa_load_info) == 0); | |
34dc7c2f | 5361 | |
b128c09f | 5362 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5363 | /* |
9babb374 BB |
5364 | * Toss any existing sparelist, as it doesn't have any validity |
5365 | * anymore, and conflicts with spa_has_spare(). | |
34dc7c2f | 5366 | */ |
9babb374 | 5367 | if (spa->spa_spares.sav_config) { |
34dc7c2f BB |
5368 | nvlist_free(spa->spa_spares.sav_config); |
5369 | spa->spa_spares.sav_config = NULL; | |
5370 | spa_load_spares(spa); | |
5371 | } | |
9babb374 | 5372 | if (spa->spa_l2cache.sav_config) { |
34dc7c2f BB |
5373 | nvlist_free(spa->spa_l2cache.sav_config); |
5374 | spa->spa_l2cache.sav_config = NULL; | |
5375 | spa_load_l2cache(spa); | |
5376 | } | |
5377 | ||
5378 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
5379 | &nvroot) == 0); | |
b128c09f | 5380 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 5381 | |
d164b209 BB |
5382 | if (props != NULL) |
5383 | spa_configfile_set(spa, props, B_FALSE); | |
5384 | ||
fb5f0bc8 BB |
5385 | if (error != 0 || (props && spa_writeable(spa) && |
5386 | (error = spa_prop_set(spa, props)))) { | |
9babb374 BB |
5387 | spa_unload(spa); |
5388 | spa_deactivate(spa); | |
5389 | spa_remove(spa); | |
34dc7c2f BB |
5390 | mutex_exit(&spa_namespace_lock); |
5391 | return (error); | |
5392 | } | |
5393 | ||
572e2857 BB |
5394 | spa_async_resume(spa); |
5395 | ||
34dc7c2f BB |
5396 | /* |
5397 | * Override any spares and level 2 cache devices as specified by | |
5398 | * the user, as these may have correct device names/devids, etc. | |
5399 | */ | |
5400 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
5401 | &spares, &nspares) == 0) { | |
5402 | if (spa->spa_spares.sav_config) | |
5403 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
5404 | ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
5405 | else | |
5406 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, | |
79c76d5b | 5407 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
5408 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
5409 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 5410 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5411 | spa_load_spares(spa); |
b128c09f | 5412 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5413 | spa->spa_spares.sav_sync = B_TRUE; |
5414 | } | |
5415 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
5416 | &l2cache, &nl2cache) == 0) { | |
5417 | if (spa->spa_l2cache.sav_config) | |
5418 | VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
5419 | ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
5420 | else | |
5421 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
79c76d5b | 5422 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
5423 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
5424 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 5425 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5426 | spa_load_l2cache(spa); |
b128c09f | 5427 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5428 | spa->spa_l2cache.sav_sync = B_TRUE; |
5429 | } | |
5430 | ||
428870ff BB |
5431 | /* |
5432 | * Check for any removed devices. | |
5433 | */ | |
5434 | if (spa->spa_autoreplace) { | |
5435 | spa_aux_check_removed(&spa->spa_spares); | |
5436 | spa_aux_check_removed(&spa->spa_l2cache); | |
5437 | } | |
5438 | ||
fb5f0bc8 | 5439 | if (spa_writeable(spa)) { |
b128c09f BB |
5440 | /* |
5441 | * Update the config cache to include the newly-imported pool. | |
5442 | */ | |
45d1cae3 | 5443 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
b128c09f | 5444 | } |
34dc7c2f | 5445 | |
34dc7c2f | 5446 | /* |
9babb374 BB |
5447 | * It's possible that the pool was expanded while it was exported. |
5448 | * We kick off an async task to handle this for us. | |
34dc7c2f | 5449 | */ |
9babb374 | 5450 | spa_async_request(spa, SPA_ASYNC_AUTOEXPAND); |
b128c09f | 5451 | |
d5e024cb | 5452 | spa_history_log_version(spa, "import", NULL); |
fb390aaf | 5453 | |
12fa0466 | 5454 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT); |
fb390aaf | 5455 | |
a0bd735a | 5456 | zvol_create_minors(spa, pool, B_TRUE); |
526af785 | 5457 | |
fb390aaf HR |
5458 | mutex_exit(&spa_namespace_lock); |
5459 | ||
b128c09f BB |
5460 | return (0); |
5461 | } | |
5462 | ||
34dc7c2f BB |
5463 | nvlist_t * |
5464 | spa_tryimport(nvlist_t *tryconfig) | |
5465 | { | |
5466 | nvlist_t *config = NULL; | |
6cb8e530 | 5467 | char *poolname, *cachefile; |
34dc7c2f BB |
5468 | spa_t *spa; |
5469 | uint64_t state; | |
d164b209 | 5470 | int error; |
8a393be3 | 5471 | zpool_load_policy_t policy; |
34dc7c2f BB |
5472 | |
5473 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
5474 | return (NULL); | |
5475 | ||
5476 | if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
5477 | return (NULL); | |
5478 | ||
5479 | /* | |
5480 | * Create and initialize the spa structure. | |
5481 | */ | |
5482 | mutex_enter(&spa_namespace_lock); | |
428870ff | 5483 | spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL); |
fb5f0bc8 | 5484 | spa_activate(spa, FREAD); |
34dc7c2f BB |
5485 | |
5486 | /* | |
8a393be3 | 5487 | * Rewind pool if a max txg was provided. |
34dc7c2f | 5488 | */ |
8a393be3 PZ |
5489 | zpool_get_load_policy(spa->spa_config, &policy); |
5490 | if (policy.zlp_txg != UINT64_MAX) { | |
5491 | spa->spa_load_max_txg = policy.zlp_txg; | |
6cb8e530 PZ |
5492 | spa->spa_extreme_rewind = B_TRUE; |
5493 | zfs_dbgmsg("spa_tryimport: importing %s, max_txg=%lld", | |
8a393be3 | 5494 | poolname, (longlong_t)policy.zlp_txg); |
6cb8e530 PZ |
5495 | } else { |
5496 | zfs_dbgmsg("spa_tryimport: importing %s", poolname); | |
5497 | } | |
5498 | ||
5499 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_CACHEFILE, &cachefile) | |
5500 | == 0) { | |
5501 | zfs_dbgmsg("spa_tryimport: using cachefile '%s'", cachefile); | |
5502 | spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE; | |
5503 | } else { | |
5504 | spa->spa_config_source = SPA_CONFIG_SRC_SCAN; | |
5505 | } | |
5506 | ||
5507 | error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING); | |
34dc7c2f BB |
5508 | |
5509 | /* | |
5510 | * If 'tryconfig' was at least parsable, return the current config. | |
5511 | */ | |
5512 | if (spa->spa_root_vdev != NULL) { | |
34dc7c2f | 5513 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
5514 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
5515 | poolname) == 0); | |
5516 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
5517 | state) == 0); | |
5518 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
5519 | spa->spa_uberblock.ub_timestamp) == 0); | |
9ae529ec CS |
5520 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
5521 | spa->spa_load_info) == 0); | |
ffe9d382 BB |
5522 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_ERRATA, |
5523 | spa->spa_errata) == 0); | |
34dc7c2f BB |
5524 | |
5525 | /* | |
5526 | * If the bootfs property exists on this pool then we | |
5527 | * copy it out so that external consumers can tell which | |
5528 | * pools are bootable. | |
5529 | */ | |
d164b209 | 5530 | if ((!error || error == EEXIST) && spa->spa_bootfs) { |
79c76d5b | 5531 | char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
34dc7c2f BB |
5532 | |
5533 | /* | |
5534 | * We have to play games with the name since the | |
5535 | * pool was opened as TRYIMPORT_NAME. | |
5536 | */ | |
b128c09f | 5537 | if (dsl_dsobj_to_dsname(spa_name(spa), |
34dc7c2f BB |
5538 | spa->spa_bootfs, tmpname) == 0) { |
5539 | char *cp; | |
d1d7e268 MK |
5540 | char *dsname; |
5541 | ||
79c76d5b | 5542 | dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
34dc7c2f BB |
5543 | |
5544 | cp = strchr(tmpname, '/'); | |
5545 | if (cp == NULL) { | |
5546 | (void) strlcpy(dsname, tmpname, | |
5547 | MAXPATHLEN); | |
5548 | } else { | |
5549 | (void) snprintf(dsname, MAXPATHLEN, | |
5550 | "%s/%s", poolname, ++cp); | |
5551 | } | |
5552 | VERIFY(nvlist_add_string(config, | |
5553 | ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
5554 | kmem_free(dsname, MAXPATHLEN); | |
5555 | } | |
5556 | kmem_free(tmpname, MAXPATHLEN); | |
5557 | } | |
5558 | ||
5559 | /* | |
5560 | * Add the list of hot spares and level 2 cache devices. | |
5561 | */ | |
9babb374 | 5562 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
5563 | spa_add_spares(spa, config); |
5564 | spa_add_l2cache(spa, config); | |
9babb374 | 5565 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
5566 | } |
5567 | ||
5568 | spa_unload(spa); | |
5569 | spa_deactivate(spa); | |
5570 | spa_remove(spa); | |
5571 | mutex_exit(&spa_namespace_lock); | |
5572 | ||
5573 | return (config); | |
5574 | } | |
5575 | ||
5576 | /* | |
5577 | * Pool export/destroy | |
5578 | * | |
5579 | * The act of destroying or exporting a pool is very simple. We make sure there | |
5580 | * is no more pending I/O and any references to the pool are gone. Then, we | |
5581 | * update the pool state and sync all the labels to disk, removing the | |
fb5f0bc8 BB |
5582 | * configuration from the cache afterwards. If the 'hardforce' flag is set, then |
5583 | * we don't sync the labels or remove the configuration cache. | |
34dc7c2f BB |
5584 | */ |
5585 | static int | |
b128c09f | 5586 | spa_export_common(char *pool, int new_state, nvlist_t **oldconfig, |
fb5f0bc8 | 5587 | boolean_t force, boolean_t hardforce) |
34dc7c2f BB |
5588 | { |
5589 | spa_t *spa; | |
5590 | ||
5591 | if (oldconfig) | |
5592 | *oldconfig = NULL; | |
5593 | ||
fb5f0bc8 | 5594 | if (!(spa_mode_global & FWRITE)) |
2e528b49 | 5595 | return (SET_ERROR(EROFS)); |
34dc7c2f BB |
5596 | |
5597 | mutex_enter(&spa_namespace_lock); | |
5598 | if ((spa = spa_lookup(pool)) == NULL) { | |
5599 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 5600 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
5601 | } |
5602 | ||
5603 | /* | |
5604 | * Put a hold on the pool, drop the namespace lock, stop async tasks, | |
5605 | * reacquire the namespace lock, and see if we can export. | |
5606 | */ | |
5607 | spa_open_ref(spa, FTAG); | |
5608 | mutex_exit(&spa_namespace_lock); | |
5609 | spa_async_suspend(spa); | |
a0bd735a BP |
5610 | if (spa->spa_zvol_taskq) { |
5611 | zvol_remove_minors(spa, spa_name(spa), B_TRUE); | |
5612 | taskq_wait(spa->spa_zvol_taskq); | |
5613 | } | |
34dc7c2f BB |
5614 | mutex_enter(&spa_namespace_lock); |
5615 | spa_close(spa, FTAG); | |
5616 | ||
d14cfd83 IH |
5617 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) |
5618 | goto export_spa; | |
34dc7c2f | 5619 | /* |
d14cfd83 IH |
5620 | * The pool will be in core if it's openable, in which case we can |
5621 | * modify its state. Objsets may be open only because they're dirty, | |
5622 | * so we have to force it to sync before checking spa_refcnt. | |
34dc7c2f | 5623 | */ |
0c66c32d | 5624 | if (spa->spa_sync_on) { |
34dc7c2f | 5625 | txg_wait_synced(spa->spa_dsl_pool, 0); |
0c66c32d JG |
5626 | spa_evicting_os_wait(spa); |
5627 | } | |
34dc7c2f | 5628 | |
d14cfd83 IH |
5629 | /* |
5630 | * A pool cannot be exported or destroyed if there are active | |
5631 | * references. If we are resetting a pool, allow references by | |
5632 | * fault injection handlers. | |
5633 | */ | |
5634 | if (!spa_refcount_zero(spa) || | |
5635 | (spa->spa_inject_ref != 0 && | |
5636 | new_state != POOL_STATE_UNINITIALIZED)) { | |
5637 | spa_async_resume(spa); | |
5638 | mutex_exit(&spa_namespace_lock); | |
5639 | return (SET_ERROR(EBUSY)); | |
5640 | } | |
34dc7c2f | 5641 | |
d14cfd83 | 5642 | if (spa->spa_sync_on) { |
b128c09f BB |
5643 | /* |
5644 | * A pool cannot be exported if it has an active shared spare. | |
5645 | * This is to prevent other pools stealing the active spare | |
5646 | * from an exported pool. At user's own will, such pool can | |
5647 | * be forcedly exported. | |
5648 | */ | |
5649 | if (!force && new_state == POOL_STATE_EXPORTED && | |
5650 | spa_has_active_shared_spare(spa)) { | |
5651 | spa_async_resume(spa); | |
5652 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 5653 | return (SET_ERROR(EXDEV)); |
b128c09f | 5654 | } |
34dc7c2f BB |
5655 | |
5656 | /* | |
5657 | * We want this to be reflected on every label, | |
5658 | * so mark them all dirty. spa_unload() will do the | |
5659 | * final sync that pushes these changes out. | |
5660 | */ | |
fb5f0bc8 | 5661 | if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { |
b128c09f | 5662 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 5663 | spa->spa_state = new_state; |
428870ff BB |
5664 | spa->spa_final_txg = spa_last_synced_txg(spa) + |
5665 | TXG_DEFER_SIZE + 1; | |
34dc7c2f | 5666 | vdev_config_dirty(spa->spa_root_vdev); |
b128c09f | 5667 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5668 | } |
5669 | } | |
5670 | ||
d14cfd83 | 5671 | export_spa: |
d5e024cb BB |
5672 | if (new_state == POOL_STATE_DESTROYED) |
5673 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_DESTROY); | |
5674 | else if (new_state == POOL_STATE_EXPORTED) | |
5675 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_EXPORT); | |
34dc7c2f BB |
5676 | |
5677 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
5678 | spa_unload(spa); | |
5679 | spa_deactivate(spa); | |
5680 | } | |
5681 | ||
5682 | if (oldconfig && spa->spa_config) | |
5683 | VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); | |
5684 | ||
5685 | if (new_state != POOL_STATE_UNINITIALIZED) { | |
fb5f0bc8 | 5686 | if (!hardforce) |
a1d477c2 | 5687 | spa_write_cachefile(spa, B_TRUE, B_TRUE); |
34dc7c2f | 5688 | spa_remove(spa); |
34dc7c2f BB |
5689 | } |
5690 | mutex_exit(&spa_namespace_lock); | |
5691 | ||
5692 | return (0); | |
5693 | } | |
5694 | ||
5695 | /* | |
5696 | * Destroy a storage pool. | |
5697 | */ | |
5698 | int | |
5699 | spa_destroy(char *pool) | |
5700 | { | |
fb5f0bc8 BB |
5701 | return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, |
5702 | B_FALSE, B_FALSE)); | |
34dc7c2f BB |
5703 | } |
5704 | ||
5705 | /* | |
5706 | * Export a storage pool. | |
5707 | */ | |
5708 | int | |
fb5f0bc8 BB |
5709 | spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
5710 | boolean_t hardforce) | |
34dc7c2f | 5711 | { |
fb5f0bc8 BB |
5712 | return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, |
5713 | force, hardforce)); | |
34dc7c2f BB |
5714 | } |
5715 | ||
5716 | /* | |
5717 | * Similar to spa_export(), this unloads the spa_t without actually removing it | |
5718 | * from the namespace in any way. | |
5719 | */ | |
5720 | int | |
5721 | spa_reset(char *pool) | |
5722 | { | |
b128c09f | 5723 | return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, |
fb5f0bc8 | 5724 | B_FALSE, B_FALSE)); |
34dc7c2f BB |
5725 | } |
5726 | ||
34dc7c2f BB |
5727 | /* |
5728 | * ========================================================================== | |
5729 | * Device manipulation | |
5730 | * ========================================================================== | |
5731 | */ | |
5732 | ||
5733 | /* | |
5734 | * Add a device to a storage pool. | |
5735 | */ | |
5736 | int | |
5737 | spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
5738 | { | |
428870ff | 5739 | uint64_t txg, id; |
fb5f0bc8 | 5740 | int error; |
34dc7c2f BB |
5741 | vdev_t *rvd = spa->spa_root_vdev; |
5742 | vdev_t *vd, *tvd; | |
5743 | nvlist_t **spares, **l2cache; | |
5744 | uint_t nspares, nl2cache; | |
5745 | ||
572e2857 BB |
5746 | ASSERT(spa_writeable(spa)); |
5747 | ||
34dc7c2f BB |
5748 | txg = spa_vdev_enter(spa); |
5749 | ||
5750 | if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, | |
5751 | VDEV_ALLOC_ADD)) != 0) | |
5752 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5753 | ||
b128c09f | 5754 | spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ |
34dc7c2f BB |
5755 | |
5756 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, | |
5757 | &nspares) != 0) | |
5758 | nspares = 0; | |
5759 | ||
5760 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, | |
5761 | &nl2cache) != 0) | |
5762 | nl2cache = 0; | |
5763 | ||
b128c09f | 5764 | if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) |
34dc7c2f | 5765 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
34dc7c2f | 5766 | |
b128c09f BB |
5767 | if (vd->vdev_children != 0 && |
5768 | (error = vdev_create(vd, txg, B_FALSE)) != 0) | |
5769 | return (spa_vdev_exit(spa, vd, txg, error)); | |
34dc7c2f BB |
5770 | |
5771 | /* | |
5772 | * We must validate the spares and l2cache devices after checking the | |
5773 | * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
5774 | */ | |
b128c09f | 5775 | if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) |
34dc7c2f | 5776 | return (spa_vdev_exit(spa, vd, txg, error)); |
34dc7c2f BB |
5777 | |
5778 | /* | |
a1d477c2 MA |
5779 | * If we are in the middle of a device removal, we can only add |
5780 | * devices which match the existing devices in the pool. | |
5781 | * If we are in the middle of a removal, or have some indirect | |
5782 | * vdevs, we can not add raidz toplevels. | |
34dc7c2f | 5783 | */ |
a1d477c2 MA |
5784 | if (spa->spa_vdev_removal != NULL || |
5785 | spa->spa_removing_phys.sr_prev_indirect_vdev != -1) { | |
5786 | for (int c = 0; c < vd->vdev_children; c++) { | |
5787 | tvd = vd->vdev_child[c]; | |
5788 | if (spa->spa_vdev_removal != NULL && | |
9e052db4 | 5789 | tvd->vdev_ashift != spa->spa_max_ashift) { |
a1d477c2 MA |
5790 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
5791 | } | |
5792 | /* Fail if top level vdev is raidz */ | |
5793 | if (tvd->vdev_ops == &vdev_raidz_ops) { | |
5794 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); | |
5795 | } | |
5796 | /* | |
5797 | * Need the top level mirror to be | |
5798 | * a mirror of leaf vdevs only | |
5799 | */ | |
5800 | if (tvd->vdev_ops == &vdev_mirror_ops) { | |
5801 | for (uint64_t cid = 0; | |
5802 | cid < tvd->vdev_children; cid++) { | |
5803 | vdev_t *cvd = tvd->vdev_child[cid]; | |
5804 | if (!cvd->vdev_ops->vdev_op_leaf) { | |
5805 | return (spa_vdev_exit(spa, vd, | |
5806 | txg, EINVAL)); | |
5807 | } | |
5808 | } | |
5809 | } | |
5810 | } | |
5811 | } | |
5812 | ||
1c27024e | 5813 | for (int c = 0; c < vd->vdev_children; c++) { |
428870ff BB |
5814 | |
5815 | /* | |
5816 | * Set the vdev id to the first hole, if one exists. | |
5817 | */ | |
5818 | for (id = 0; id < rvd->vdev_children; id++) { | |
5819 | if (rvd->vdev_child[id]->vdev_ishole) { | |
5820 | vdev_free(rvd->vdev_child[id]); | |
5821 | break; | |
5822 | } | |
5823 | } | |
34dc7c2f BB |
5824 | tvd = vd->vdev_child[c]; |
5825 | vdev_remove_child(vd, tvd); | |
428870ff | 5826 | tvd->vdev_id = id; |
34dc7c2f BB |
5827 | vdev_add_child(rvd, tvd); |
5828 | vdev_config_dirty(tvd); | |
5829 | } | |
5830 | ||
5831 | if (nspares != 0) { | |
5832 | spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, | |
5833 | ZPOOL_CONFIG_SPARES); | |
5834 | spa_load_spares(spa); | |
5835 | spa->spa_spares.sav_sync = B_TRUE; | |
5836 | } | |
5837 | ||
5838 | if (nl2cache != 0) { | |
5839 | spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
5840 | ZPOOL_CONFIG_L2CACHE); | |
5841 | spa_load_l2cache(spa); | |
5842 | spa->spa_l2cache.sav_sync = B_TRUE; | |
5843 | } | |
5844 | ||
5845 | /* | |
5846 | * We have to be careful when adding new vdevs to an existing pool. | |
5847 | * If other threads start allocating from these vdevs before we | |
5848 | * sync the config cache, and we lose power, then upon reboot we may | |
5849 | * fail to open the pool because there are DVAs that the config cache | |
5850 | * can't translate. Therefore, we first add the vdevs without | |
5851 | * initializing metaslabs; sync the config cache (via spa_vdev_exit()); | |
5852 | * and then let spa_config_update() initialize the new metaslabs. | |
5853 | * | |
5854 | * spa_load() checks for added-but-not-initialized vdevs, so that | |
5855 | * if we lose power at any point in this sequence, the remaining | |
5856 | * steps will be completed the next time we load the pool. | |
5857 | */ | |
5858 | (void) spa_vdev_exit(spa, vd, txg, 0); | |
5859 | ||
5860 | mutex_enter(&spa_namespace_lock); | |
5861 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
12fa0466 | 5862 | spa_event_notify(spa, NULL, NULL, ESC_ZFS_VDEV_ADD); |
34dc7c2f BB |
5863 | mutex_exit(&spa_namespace_lock); |
5864 | ||
5865 | return (0); | |
5866 | } | |
5867 | ||
5868 | /* | |
5869 | * Attach a device to a mirror. The arguments are the path to any device | |
5870 | * in the mirror, and the nvroot for the new device. If the path specifies | |
5871 | * a device that is not mirrored, we automatically insert the mirror vdev. | |
5872 | * | |
5873 | * If 'replacing' is specified, the new device is intended to replace the | |
5874 | * existing device; in this case the two devices are made into their own | |
5875 | * mirror using the 'replacing' vdev, which is functionally identical to | |
5876 | * the mirror vdev (it actually reuses all the same ops) but has a few | |
5877 | * extra rules: you can't attach to it after it's been created, and upon | |
5878 | * completion of resilvering, the first disk (the one being replaced) | |
5879 | * is automatically detached. | |
5880 | */ | |
5881 | int | |
5882 | spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) | |
5883 | { | |
428870ff | 5884 | uint64_t txg, dtl_max_txg; |
1c27024e | 5885 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev); |
34dc7c2f BB |
5886 | vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; |
5887 | vdev_ops_t *pvops; | |
b128c09f BB |
5888 | char *oldvdpath, *newvdpath; |
5889 | int newvd_isspare; | |
5890 | int error; | |
34dc7c2f | 5891 | |
572e2857 BB |
5892 | ASSERT(spa_writeable(spa)); |
5893 | ||
34dc7c2f BB |
5894 | txg = spa_vdev_enter(spa); |
5895 | ||
b128c09f | 5896 | oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f | 5897 | |
d2734cce SD |
5898 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
5899 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { | |
5900 | error = (spa_has_checkpoint(spa)) ? | |
5901 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
5902 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5903 | } | |
5904 | ||
9e052db4 | 5905 | if (spa->spa_vdev_removal != NULL) |
a1d477c2 | 5906 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
a1d477c2 | 5907 | |
34dc7c2f BB |
5908 | if (oldvd == NULL) |
5909 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
5910 | ||
5911 | if (!oldvd->vdev_ops->vdev_op_leaf) | |
5912 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
5913 | ||
5914 | pvd = oldvd->vdev_parent; | |
5915 | ||
5916 | if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, | |
5ffb9d1d | 5917 | VDEV_ALLOC_ATTACH)) != 0) |
34dc7c2f BB |
5918 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); |
5919 | ||
5920 | if (newrootvd->vdev_children != 1) | |
5921 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
5922 | ||
5923 | newvd = newrootvd->vdev_child[0]; | |
5924 | ||
5925 | if (!newvd->vdev_ops->vdev_op_leaf) | |
5926 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
5927 | ||
5928 | if ((error = vdev_create(newrootvd, txg, replacing)) != 0) | |
5929 | return (spa_vdev_exit(spa, newrootvd, txg, error)); | |
5930 | ||
5931 | /* | |
5932 | * Spares can't replace logs | |
5933 | */ | |
b128c09f | 5934 | if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) |
34dc7c2f BB |
5935 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
5936 | ||
5937 | if (!replacing) { | |
5938 | /* | |
5939 | * For attach, the only allowable parent is a mirror or the root | |
5940 | * vdev. | |
5941 | */ | |
5942 | if (pvd->vdev_ops != &vdev_mirror_ops && | |
5943 | pvd->vdev_ops != &vdev_root_ops) | |
5944 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
5945 | ||
5946 | pvops = &vdev_mirror_ops; | |
5947 | } else { | |
5948 | /* | |
5949 | * Active hot spares can only be replaced by inactive hot | |
5950 | * spares. | |
5951 | */ | |
5952 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 | 5953 | oldvd->vdev_isspare && |
34dc7c2f BB |
5954 | !spa_has_spare(spa, newvd->vdev_guid)) |
5955 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
5956 | ||
5957 | /* | |
5958 | * If the source is a hot spare, and the parent isn't already a | |
5959 | * spare, then we want to create a new hot spare. Otherwise, we | |
5960 | * want to create a replacing vdev. The user is not allowed to | |
5961 | * attach to a spared vdev child unless the 'isspare' state is | |
5962 | * the same (spare replaces spare, non-spare replaces | |
5963 | * non-spare). | |
5964 | */ | |
572e2857 BB |
5965 | if (pvd->vdev_ops == &vdev_replacing_ops && |
5966 | spa_version(spa) < SPA_VERSION_MULTI_REPLACE) { | |
34dc7c2f | 5967 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
5968 | } else if (pvd->vdev_ops == &vdev_spare_ops && |
5969 | newvd->vdev_isspare != oldvd->vdev_isspare) { | |
34dc7c2f | 5970 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
5971 | } |
5972 | ||
5973 | if (newvd->vdev_isspare) | |
34dc7c2f BB |
5974 | pvops = &vdev_spare_ops; |
5975 | else | |
5976 | pvops = &vdev_replacing_ops; | |
5977 | } | |
5978 | ||
5979 | /* | |
9babb374 | 5980 | * Make sure the new device is big enough. |
34dc7c2f | 5981 | */ |
9babb374 | 5982 | if (newvd->vdev_asize < vdev_get_min_asize(oldvd)) |
34dc7c2f BB |
5983 | return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
5984 | ||
5985 | /* | |
5986 | * The new device cannot have a higher alignment requirement | |
5987 | * than the top-level vdev. | |
5988 | */ | |
5989 | if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
5990 | return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); | |
5991 | ||
5992 | /* | |
5993 | * If this is an in-place replacement, update oldvd's path and devid | |
5994 | * to make it distinguishable from newvd, and unopenable from now on. | |
5995 | */ | |
5996 | if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
5997 | spa_strfree(oldvd->vdev_path); | |
5998 | oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
79c76d5b | 5999 | KM_SLEEP); |
34dc7c2f BB |
6000 | (void) sprintf(oldvd->vdev_path, "%s/%s", |
6001 | newvd->vdev_path, "old"); | |
6002 | if (oldvd->vdev_devid != NULL) { | |
6003 | spa_strfree(oldvd->vdev_devid); | |
6004 | oldvd->vdev_devid = NULL; | |
6005 | } | |
6006 | } | |
6007 | ||
572e2857 | 6008 | /* mark the device being resilvered */ |
5d1f7fb6 | 6009 | newvd->vdev_resilver_txg = txg; |
572e2857 | 6010 | |
34dc7c2f BB |
6011 | /* |
6012 | * If the parent is not a mirror, or if we're replacing, insert the new | |
6013 | * mirror/replacing/spare vdev above oldvd. | |
6014 | */ | |
6015 | if (pvd->vdev_ops != pvops) | |
6016 | pvd = vdev_add_parent(oldvd, pvops); | |
6017 | ||
6018 | ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
6019 | ASSERT(pvd->vdev_ops == pvops); | |
6020 | ASSERT(oldvd->vdev_parent == pvd); | |
6021 | ||
6022 | /* | |
6023 | * Extract the new device from its root and add it to pvd. | |
6024 | */ | |
6025 | vdev_remove_child(newrootvd, newvd); | |
6026 | newvd->vdev_id = pvd->vdev_children; | |
428870ff | 6027 | newvd->vdev_crtxg = oldvd->vdev_crtxg; |
34dc7c2f BB |
6028 | vdev_add_child(pvd, newvd); |
6029 | ||
6d82f98c IH |
6030 | /* |
6031 | * Reevaluate the parent vdev state. | |
6032 | */ | |
6033 | vdev_propagate_state(pvd); | |
6034 | ||
34dc7c2f BB |
6035 | tvd = newvd->vdev_top; |
6036 | ASSERT(pvd->vdev_top == tvd); | |
6037 | ASSERT(tvd->vdev_parent == rvd); | |
6038 | ||
6039 | vdev_config_dirty(tvd); | |
6040 | ||
6041 | /* | |
428870ff BB |
6042 | * Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account |
6043 | * for any dmu_sync-ed blocks. It will propagate upward when | |
6044 | * spa_vdev_exit() calls vdev_dtl_reassess(). | |
34dc7c2f | 6045 | */ |
428870ff | 6046 | dtl_max_txg = txg + TXG_CONCURRENT_STATES; |
34dc7c2f | 6047 | |
428870ff BB |
6048 | vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL, |
6049 | dtl_max_txg - TXG_INITIAL); | |
34dc7c2f | 6050 | |
9babb374 | 6051 | if (newvd->vdev_isspare) { |
34dc7c2f | 6052 | spa_spare_activate(newvd); |
12fa0466 | 6053 | spa_event_notify(spa, newvd, NULL, ESC_ZFS_VDEV_SPARE); |
9babb374 BB |
6054 | } |
6055 | ||
b128c09f BB |
6056 | oldvdpath = spa_strdup(oldvd->vdev_path); |
6057 | newvdpath = spa_strdup(newvd->vdev_path); | |
6058 | newvd_isspare = newvd->vdev_isspare; | |
34dc7c2f BB |
6059 | |
6060 | /* | |
6061 | * Mark newvd's DTL dirty in this txg. | |
6062 | */ | |
6063 | vdev_dirty(tvd, VDD_DTL, newvd, txg); | |
6064 | ||
428870ff | 6065 | /* |
93cf2076 GW |
6066 | * Schedule the resilver to restart in the future. We do this to |
6067 | * ensure that dmu_sync-ed blocks have been stitched into the | |
80a91e74 TC |
6068 | * respective datasets. We do not do this if resilvers have been |
6069 | * deferred. | |
428870ff | 6070 | */ |
80a91e74 TC |
6071 | if (dsl_scan_resilvering(spa_get_dsl(spa)) && |
6072 | spa_feature_is_enabled(spa, SPA_FEATURE_RESILVER_DEFER)) | |
6073 | vdev_set_deferred_resilver(spa, newvd); | |
6074 | else | |
6075 | dsl_resilver_restart(spa->spa_dsl_pool, dtl_max_txg); | |
428870ff | 6076 | |
fb390aaf | 6077 | if (spa->spa_bootfs) |
12fa0466 | 6078 | spa_event_notify(spa, newvd, NULL, ESC_ZFS_BOOTFS_VDEV_ATTACH); |
fb390aaf | 6079 | |
12fa0466 | 6080 | spa_event_notify(spa, newvd, NULL, ESC_ZFS_VDEV_ATTACH); |
fb390aaf | 6081 | |
428870ff BB |
6082 | /* |
6083 | * Commit the config | |
6084 | */ | |
6085 | (void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0); | |
34dc7c2f | 6086 | |
6f1ffb06 | 6087 | spa_history_log_internal(spa, "vdev attach", NULL, |
428870ff | 6088 | "%s vdev=%s %s vdev=%s", |
45d1cae3 BB |
6089 | replacing && newvd_isspare ? "spare in" : |
6090 | replacing ? "replace" : "attach", newvdpath, | |
6091 | replacing ? "for" : "to", oldvdpath); | |
b128c09f BB |
6092 | |
6093 | spa_strfree(oldvdpath); | |
6094 | spa_strfree(newvdpath); | |
6095 | ||
34dc7c2f BB |
6096 | return (0); |
6097 | } | |
6098 | ||
6099 | /* | |
6100 | * Detach a device from a mirror or replacing vdev. | |
d3cc8b15 | 6101 | * |
34dc7c2f BB |
6102 | * If 'replace_done' is specified, only detach if the parent |
6103 | * is a replacing vdev. | |
6104 | */ | |
6105 | int | |
fb5f0bc8 | 6106 | spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) |
34dc7c2f BB |
6107 | { |
6108 | uint64_t txg; | |
fb5f0bc8 | 6109 | int error; |
1c27024e | 6110 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev); |
34dc7c2f BB |
6111 | vdev_t *vd, *pvd, *cvd, *tvd; |
6112 | boolean_t unspare = B_FALSE; | |
d4ed6673 | 6113 | uint64_t unspare_guid = 0; |
428870ff | 6114 | char *vdpath; |
1c27024e | 6115 | |
572e2857 BB |
6116 | ASSERT(spa_writeable(spa)); |
6117 | ||
34dc7c2f BB |
6118 | txg = spa_vdev_enter(spa); |
6119 | ||
b128c09f | 6120 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f | 6121 | |
d2734cce SD |
6122 | /* |
6123 | * Besides being called directly from the userland through the | |
6124 | * ioctl interface, spa_vdev_detach() can be potentially called | |
6125 | * at the end of spa_vdev_resilver_done(). | |
6126 | * | |
6127 | * In the regular case, when we have a checkpoint this shouldn't | |
6128 | * happen as we never empty the DTLs of a vdev during the scrub | |
6129 | * [see comment in dsl_scan_done()]. Thus spa_vdev_resilvering_done() | |
6130 | * should never get here when we have a checkpoint. | |
6131 | * | |
6132 | * That said, even in a case when we checkpoint the pool exactly | |
6133 | * as spa_vdev_resilver_done() calls this function everything | |
6134 | * should be fine as the resilver will return right away. | |
6135 | */ | |
6136 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
6137 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { | |
6138 | error = (spa_has_checkpoint(spa)) ? | |
6139 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
6140 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6141 | } | |
6142 | ||
34dc7c2f BB |
6143 | if (vd == NULL) |
6144 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
6145 | ||
6146 | if (!vd->vdev_ops->vdev_op_leaf) | |
6147 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
6148 | ||
6149 | pvd = vd->vdev_parent; | |
6150 | ||
fb5f0bc8 BB |
6151 | /* |
6152 | * If the parent/child relationship is not as expected, don't do it. | |
6153 | * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing | |
6154 | * vdev that's replacing B with C. The user's intent in replacing | |
6155 | * is to go from M(A,B) to M(A,C). If the user decides to cancel | |
6156 | * the replace by detaching C, the expected behavior is to end up | |
6157 | * M(A,B). But suppose that right after deciding to detach C, | |
6158 | * the replacement of B completes. We would have M(A,C), and then | |
6159 | * ask to detach C, which would leave us with just A -- not what | |
6160 | * the user wanted. To prevent this, we make sure that the | |
6161 | * parent/child relationship hasn't changed -- in this example, | |
6162 | * that C's parent is still the replacing vdev R. | |
6163 | */ | |
6164 | if (pvd->vdev_guid != pguid && pguid != 0) | |
6165 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
6166 | ||
34dc7c2f | 6167 | /* |
572e2857 | 6168 | * Only 'replacing' or 'spare' vdevs can be replaced. |
34dc7c2f | 6169 | */ |
572e2857 BB |
6170 | if (replace_done && pvd->vdev_ops != &vdev_replacing_ops && |
6171 | pvd->vdev_ops != &vdev_spare_ops) | |
6172 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
34dc7c2f BB |
6173 | |
6174 | ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
6175 | spa_version(spa) >= SPA_VERSION_SPARES); | |
6176 | ||
6177 | /* | |
6178 | * Only mirror, replacing, and spare vdevs support detach. | |
6179 | */ | |
6180 | if (pvd->vdev_ops != &vdev_replacing_ops && | |
6181 | pvd->vdev_ops != &vdev_mirror_ops && | |
6182 | pvd->vdev_ops != &vdev_spare_ops) | |
6183 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
6184 | ||
6185 | /* | |
fb5f0bc8 BB |
6186 | * If this device has the only valid copy of some data, |
6187 | * we cannot safely detach it. | |
34dc7c2f | 6188 | */ |
fb5f0bc8 | 6189 | if (vdev_dtl_required(vd)) |
34dc7c2f BB |
6190 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
6191 | ||
fb5f0bc8 | 6192 | ASSERT(pvd->vdev_children >= 2); |
34dc7c2f | 6193 | |
b128c09f BB |
6194 | /* |
6195 | * If we are detaching the second disk from a replacing vdev, then | |
6196 | * check to see if we changed the original vdev's path to have "/old" | |
6197 | * at the end in spa_vdev_attach(). If so, undo that change now. | |
6198 | */ | |
572e2857 BB |
6199 | if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id > 0 && |
6200 | vd->vdev_path != NULL) { | |
6201 | size_t len = strlen(vd->vdev_path); | |
6202 | ||
1c27024e | 6203 | for (int c = 0; c < pvd->vdev_children; c++) { |
572e2857 BB |
6204 | cvd = pvd->vdev_child[c]; |
6205 | ||
6206 | if (cvd == vd || cvd->vdev_path == NULL) | |
6207 | continue; | |
6208 | ||
6209 | if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && | |
6210 | strcmp(cvd->vdev_path + len, "/old") == 0) { | |
6211 | spa_strfree(cvd->vdev_path); | |
6212 | cvd->vdev_path = spa_strdup(vd->vdev_path); | |
6213 | break; | |
6214 | } | |
b128c09f BB |
6215 | } |
6216 | } | |
6217 | ||
34dc7c2f BB |
6218 | /* |
6219 | * If we are detaching the original disk from a spare, then it implies | |
6220 | * that the spare should become a real disk, and be removed from the | |
6221 | * active spare list for the pool. | |
6222 | */ | |
6223 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 BB |
6224 | vd->vdev_id == 0 && |
6225 | pvd->vdev_child[pvd->vdev_children - 1]->vdev_isspare) | |
34dc7c2f BB |
6226 | unspare = B_TRUE; |
6227 | ||
6228 | /* | |
6229 | * Erase the disk labels so the disk can be used for other things. | |
6230 | * This must be done after all other error cases are handled, | |
6231 | * but before we disembowel vd (so we can still do I/O to it). | |
6232 | * But if we can't do it, don't treat the error as fatal -- | |
6233 | * it may be that the unwritability of the disk is the reason | |
6234 | * it's being detached! | |
6235 | */ | |
6236 | error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
6237 | ||
6238 | /* | |
6239 | * Remove vd from its parent and compact the parent's children. | |
6240 | */ | |
6241 | vdev_remove_child(pvd, vd); | |
6242 | vdev_compact_children(pvd); | |
6243 | ||
6244 | /* | |
6245 | * Remember one of the remaining children so we can get tvd below. | |
6246 | */ | |
572e2857 | 6247 | cvd = pvd->vdev_child[pvd->vdev_children - 1]; |
34dc7c2f BB |
6248 | |
6249 | /* | |
6250 | * If we need to remove the remaining child from the list of hot spares, | |
fb5f0bc8 BB |
6251 | * do it now, marking the vdev as no longer a spare in the process. |
6252 | * We must do this before vdev_remove_parent(), because that can | |
6253 | * change the GUID if it creates a new toplevel GUID. For a similar | |
6254 | * reason, we must remove the spare now, in the same txg as the detach; | |
6255 | * otherwise someone could attach a new sibling, change the GUID, and | |
6256 | * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. | |
34dc7c2f BB |
6257 | */ |
6258 | if (unspare) { | |
6259 | ASSERT(cvd->vdev_isspare); | |
6260 | spa_spare_remove(cvd); | |
6261 | unspare_guid = cvd->vdev_guid; | |
fb5f0bc8 | 6262 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
572e2857 | 6263 | cvd->vdev_unspare = B_TRUE; |
34dc7c2f BB |
6264 | } |
6265 | ||
428870ff BB |
6266 | /* |
6267 | * If the parent mirror/replacing vdev only has one child, | |
6268 | * the parent is no longer needed. Remove it from the tree. | |
6269 | */ | |
572e2857 BB |
6270 | if (pvd->vdev_children == 1) { |
6271 | if (pvd->vdev_ops == &vdev_spare_ops) | |
6272 | cvd->vdev_unspare = B_FALSE; | |
428870ff | 6273 | vdev_remove_parent(cvd); |
572e2857 BB |
6274 | } |
6275 | ||
428870ff BB |
6276 | |
6277 | /* | |
6278 | * We don't set tvd until now because the parent we just removed | |
6279 | * may have been the previous top-level vdev. | |
6280 | */ | |
6281 | tvd = cvd->vdev_top; | |
6282 | ASSERT(tvd->vdev_parent == rvd); | |
6283 | ||
6284 | /* | |
6285 | * Reevaluate the parent vdev state. | |
6286 | */ | |
6287 | vdev_propagate_state(cvd); | |
6288 | ||
6289 | /* | |
6290 | * If the 'autoexpand' property is set on the pool then automatically | |
6291 | * try to expand the size of the pool. For example if the device we | |
6292 | * just detached was smaller than the others, it may be possible to | |
6293 | * add metaslabs (i.e. grow the pool). We need to reopen the vdev | |
6294 | * first so that we can obtain the updated sizes of the leaf vdevs. | |
6295 | */ | |
6296 | if (spa->spa_autoexpand) { | |
6297 | vdev_reopen(tvd); | |
6298 | vdev_expand(tvd, txg); | |
6299 | } | |
6300 | ||
6301 | vdev_config_dirty(tvd); | |
6302 | ||
6303 | /* | |
6304 | * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that | |
6305 | * vd->vdev_detached is set and free vd's DTL object in syncing context. | |
6306 | * But first make sure we're not on any *other* txg's DTL list, to | |
6307 | * prevent vd from being accessed after it's freed. | |
6308 | */ | |
b6ca6193 | 6309 | vdpath = spa_strdup(vd->vdev_path ? vd->vdev_path : "none"); |
1c27024e | 6310 | for (int t = 0; t < TXG_SIZE; t++) |
428870ff BB |
6311 | (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); |
6312 | vd->vdev_detached = B_TRUE; | |
6313 | vdev_dirty(tvd, VDD_DTL, vd, txg); | |
6314 | ||
12fa0466 | 6315 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_REMOVE); |
428870ff | 6316 | |
572e2857 BB |
6317 | /* hang on to the spa before we release the lock */ |
6318 | spa_open_ref(spa, FTAG); | |
6319 | ||
428870ff BB |
6320 | error = spa_vdev_exit(spa, vd, txg, 0); |
6321 | ||
6f1ffb06 | 6322 | spa_history_log_internal(spa, "detach", NULL, |
428870ff BB |
6323 | "vdev=%s", vdpath); |
6324 | spa_strfree(vdpath); | |
6325 | ||
6326 | /* | |
6327 | * If this was the removal of the original device in a hot spare vdev, | |
6328 | * then we want to go through and remove the device from the hot spare | |
6329 | * list of every other pool. | |
6330 | */ | |
6331 | if (unspare) { | |
572e2857 BB |
6332 | spa_t *altspa = NULL; |
6333 | ||
428870ff | 6334 | mutex_enter(&spa_namespace_lock); |
572e2857 BB |
6335 | while ((altspa = spa_next(altspa)) != NULL) { |
6336 | if (altspa->spa_state != POOL_STATE_ACTIVE || | |
6337 | altspa == spa) | |
428870ff | 6338 | continue; |
572e2857 BB |
6339 | |
6340 | spa_open_ref(altspa, FTAG); | |
428870ff | 6341 | mutex_exit(&spa_namespace_lock); |
572e2857 | 6342 | (void) spa_vdev_remove(altspa, unspare_guid, B_TRUE); |
428870ff | 6343 | mutex_enter(&spa_namespace_lock); |
572e2857 | 6344 | spa_close(altspa, FTAG); |
428870ff BB |
6345 | } |
6346 | mutex_exit(&spa_namespace_lock); | |
572e2857 BB |
6347 | |
6348 | /* search the rest of the vdevs for spares to remove */ | |
6349 | spa_vdev_resilver_done(spa); | |
428870ff BB |
6350 | } |
6351 | ||
572e2857 BB |
6352 | /* all done with the spa; OK to release */ |
6353 | mutex_enter(&spa_namespace_lock); | |
6354 | spa_close(spa, FTAG); | |
6355 | mutex_exit(&spa_namespace_lock); | |
6356 | ||
428870ff BB |
6357 | return (error); |
6358 | } | |
6359 | ||
6360 | /* | |
6361 | * Split a set of devices from their mirrors, and create a new pool from them. | |
6362 | */ | |
6363 | int | |
6364 | spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, | |
6365 | nvlist_t *props, boolean_t exp) | |
6366 | { | |
6367 | int error = 0; | |
6368 | uint64_t txg, *glist; | |
6369 | spa_t *newspa; | |
6370 | uint_t c, children, lastlog; | |
6371 | nvlist_t **child, *nvl, *tmp; | |
6372 | dmu_tx_t *tx; | |
6373 | char *altroot = NULL; | |
6374 | vdev_t *rvd, **vml = NULL; /* vdev modify list */ | |
6375 | boolean_t activate_slog; | |
6376 | ||
572e2857 | 6377 | ASSERT(spa_writeable(spa)); |
428870ff BB |
6378 | |
6379 | txg = spa_vdev_enter(spa); | |
6380 | ||
d2734cce SD |
6381 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
6382 | if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) { | |
6383 | error = (spa_has_checkpoint(spa)) ? | |
6384 | ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT; | |
6385 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6386 | } | |
6387 | ||
428870ff BB |
6388 | /* clear the log and flush everything up to now */ |
6389 | activate_slog = spa_passivate_log(spa); | |
6390 | (void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
a1d477c2 | 6391 | error = spa_reset_logs(spa); |
428870ff BB |
6392 | txg = spa_vdev_config_enter(spa); |
6393 | ||
6394 | if (activate_slog) | |
6395 | spa_activate_log(spa); | |
6396 | ||
6397 | if (error != 0) | |
6398 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6399 | ||
6400 | /* check new spa name before going any further */ | |
6401 | if (spa_lookup(newname) != NULL) | |
6402 | return (spa_vdev_exit(spa, NULL, txg, EEXIST)); | |
6403 | ||
6404 | /* | |
6405 | * scan through all the children to ensure they're all mirrors | |
6406 | */ | |
6407 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 || | |
6408 | nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child, | |
6409 | &children) != 0) | |
6410 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
6411 | ||
6412 | /* first, check to ensure we've got the right child count */ | |
6413 | rvd = spa->spa_root_vdev; | |
6414 | lastlog = 0; | |
6415 | for (c = 0; c < rvd->vdev_children; c++) { | |
6416 | vdev_t *vd = rvd->vdev_child[c]; | |
6417 | ||
6418 | /* don't count the holes & logs as children */ | |
a1d477c2 | 6419 | if (vd->vdev_islog || !vdev_is_concrete(vd)) { |
428870ff BB |
6420 | if (lastlog == 0) |
6421 | lastlog = c; | |
6422 | continue; | |
6423 | } | |
6424 | ||
6425 | lastlog = 0; | |
6426 | } | |
6427 | if (children != (lastlog != 0 ? lastlog : rvd->vdev_children)) | |
6428 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
6429 | ||
6430 | /* next, ensure no spare or cache devices are part of the split */ | |
6431 | if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 || | |
6432 | nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0) | |
6433 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
6434 | ||
79c76d5b BB |
6435 | vml = kmem_zalloc(children * sizeof (vdev_t *), KM_SLEEP); |
6436 | glist = kmem_zalloc(children * sizeof (uint64_t), KM_SLEEP); | |
428870ff BB |
6437 | |
6438 | /* then, loop over each vdev and validate it */ | |
6439 | for (c = 0; c < children; c++) { | |
6440 | uint64_t is_hole = 0; | |
6441 | ||
6442 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, | |
6443 | &is_hole); | |
6444 | ||
6445 | if (is_hole != 0) { | |
6446 | if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole || | |
6447 | spa->spa_root_vdev->vdev_child[c]->vdev_islog) { | |
6448 | continue; | |
6449 | } else { | |
2e528b49 | 6450 | error = SET_ERROR(EINVAL); |
428870ff BB |
6451 | break; |
6452 | } | |
6453 | } | |
6454 | ||
6455 | /* which disk is going to be split? */ | |
6456 | if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID, | |
6457 | &glist[c]) != 0) { | |
2e528b49 | 6458 | error = SET_ERROR(EINVAL); |
428870ff BB |
6459 | break; |
6460 | } | |
6461 | ||
6462 | /* look it up in the spa */ | |
6463 | vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE); | |
6464 | if (vml[c] == NULL) { | |
2e528b49 | 6465 | error = SET_ERROR(ENODEV); |
428870ff BB |
6466 | break; |
6467 | } | |
6468 | ||
6469 | /* make sure there's nothing stopping the split */ | |
6470 | if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops || | |
6471 | vml[c]->vdev_islog || | |
a1d477c2 | 6472 | !vdev_is_concrete(vml[c]) || |
428870ff BB |
6473 | vml[c]->vdev_isspare || |
6474 | vml[c]->vdev_isl2cache || | |
6475 | !vdev_writeable(vml[c]) || | |
6476 | vml[c]->vdev_children != 0 || | |
6477 | vml[c]->vdev_state != VDEV_STATE_HEALTHY || | |
6478 | c != spa->spa_root_vdev->vdev_child[c]->vdev_id) { | |
2e528b49 | 6479 | error = SET_ERROR(EINVAL); |
428870ff BB |
6480 | break; |
6481 | } | |
6482 | ||
733b5722 RS |
6483 | if (vdev_dtl_required(vml[c]) || |
6484 | vdev_resilver_needed(vml[c], NULL, NULL)) { | |
2e528b49 | 6485 | error = SET_ERROR(EBUSY); |
428870ff BB |
6486 | break; |
6487 | } | |
6488 | ||
6489 | /* we need certain info from the top level */ | |
6490 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY, | |
6491 | vml[c]->vdev_top->vdev_ms_array) == 0); | |
6492 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT, | |
6493 | vml[c]->vdev_top->vdev_ms_shift) == 0); | |
6494 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE, | |
6495 | vml[c]->vdev_top->vdev_asize) == 0); | |
6496 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT, | |
6497 | vml[c]->vdev_top->vdev_ashift) == 0); | |
e0ab3ab5 JS |
6498 | |
6499 | /* transfer per-vdev ZAPs */ | |
6500 | ASSERT3U(vml[c]->vdev_leaf_zap, !=, 0); | |
6501 | VERIFY0(nvlist_add_uint64(child[c], | |
6502 | ZPOOL_CONFIG_VDEV_LEAF_ZAP, vml[c]->vdev_leaf_zap)); | |
6503 | ||
6504 | ASSERT3U(vml[c]->vdev_top->vdev_top_zap, !=, 0); | |
6505 | VERIFY0(nvlist_add_uint64(child[c], | |
6506 | ZPOOL_CONFIG_VDEV_TOP_ZAP, | |
6507 | vml[c]->vdev_parent->vdev_top_zap)); | |
428870ff BB |
6508 | } |
6509 | ||
6510 | if (error != 0) { | |
6511 | kmem_free(vml, children * sizeof (vdev_t *)); | |
6512 | kmem_free(glist, children * sizeof (uint64_t)); | |
6513 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
6514 | } | |
6515 | ||
6516 | /* stop writers from using the disks */ | |
6517 | for (c = 0; c < children; c++) { | |
6518 | if (vml[c] != NULL) | |
6519 | vml[c]->vdev_offline = B_TRUE; | |
6520 | } | |
6521 | vdev_reopen(spa->spa_root_vdev); | |
34dc7c2f BB |
6522 | |
6523 | /* | |
428870ff BB |
6524 | * Temporarily record the splitting vdevs in the spa config. This |
6525 | * will disappear once the config is regenerated. | |
34dc7c2f | 6526 | */ |
79c76d5b | 6527 | VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
428870ff BB |
6528 | VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, |
6529 | glist, children) == 0); | |
6530 | kmem_free(glist, children * sizeof (uint64_t)); | |
34dc7c2f | 6531 | |
428870ff BB |
6532 | mutex_enter(&spa->spa_props_lock); |
6533 | VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT, | |
6534 | nvl) == 0); | |
6535 | mutex_exit(&spa->spa_props_lock); | |
6536 | spa->spa_config_splitting = nvl; | |
6537 | vdev_config_dirty(spa->spa_root_vdev); | |
6538 | ||
6539 | /* configure and create the new pool */ | |
6540 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0); | |
6541 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
6542 | exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0); | |
6543 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
6544 | spa_version(spa)) == 0); | |
6545 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
6546 | spa->spa_config_txg) == 0); | |
6547 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
6548 | spa_generate_guid(NULL)) == 0); | |
e0ab3ab5 | 6549 | VERIFY0(nvlist_add_boolean(config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)); |
428870ff BB |
6550 | (void) nvlist_lookup_string(props, |
6551 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
34dc7c2f | 6552 | |
428870ff BB |
6553 | /* add the new pool to the namespace */ |
6554 | newspa = spa_add(newname, config, altroot); | |
e0ab3ab5 | 6555 | newspa->spa_avz_action = AVZ_ACTION_REBUILD; |
428870ff BB |
6556 | newspa->spa_config_txg = spa->spa_config_txg; |
6557 | spa_set_log_state(newspa, SPA_LOG_CLEAR); | |
6558 | ||
6559 | /* release the spa config lock, retaining the namespace lock */ | |
6560 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
6561 | ||
6562 | if (zio_injection_enabled) | |
6563 | zio_handle_panic_injection(spa, FTAG, 1); | |
6564 | ||
6565 | spa_activate(newspa, spa_mode_global); | |
6566 | spa_async_suspend(newspa); | |
6567 | ||
6cb8e530 PZ |
6568 | newspa->spa_config_source = SPA_CONFIG_SRC_SPLIT; |
6569 | ||
428870ff | 6570 | /* create the new pool from the disks of the original pool */ |
6cb8e530 | 6571 | error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE); |
428870ff BB |
6572 | if (error) |
6573 | goto out; | |
6574 | ||
6575 | /* if that worked, generate a real config for the new pool */ | |
6576 | if (newspa->spa_root_vdev != NULL) { | |
6577 | VERIFY(nvlist_alloc(&newspa->spa_config_splitting, | |
79c76d5b | 6578 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
428870ff BB |
6579 | VERIFY(nvlist_add_uint64(newspa->spa_config_splitting, |
6580 | ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0); | |
6581 | spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL, | |
6582 | B_TRUE)); | |
9babb374 | 6583 | } |
34dc7c2f | 6584 | |
428870ff BB |
6585 | /* set the props */ |
6586 | if (props != NULL) { | |
6587 | spa_configfile_set(newspa, props, B_FALSE); | |
6588 | error = spa_prop_set(newspa, props); | |
6589 | if (error) | |
6590 | goto out; | |
6591 | } | |
34dc7c2f | 6592 | |
428870ff BB |
6593 | /* flush everything */ |
6594 | txg = spa_vdev_config_enter(newspa); | |
6595 | vdev_config_dirty(newspa->spa_root_vdev); | |
6596 | (void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG); | |
34dc7c2f | 6597 | |
428870ff BB |
6598 | if (zio_injection_enabled) |
6599 | zio_handle_panic_injection(spa, FTAG, 2); | |
34dc7c2f | 6600 | |
428870ff | 6601 | spa_async_resume(newspa); |
34dc7c2f | 6602 | |
428870ff BB |
6603 | /* finally, update the original pool's config */ |
6604 | txg = spa_vdev_config_enter(spa); | |
6605 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
6606 | error = dmu_tx_assign(tx, TXG_WAIT); | |
6607 | if (error != 0) | |
6608 | dmu_tx_abort(tx); | |
6609 | for (c = 0; c < children; c++) { | |
6610 | if (vml[c] != NULL) { | |
6611 | vdev_split(vml[c]); | |
6612 | if (error == 0) | |
6f1ffb06 MA |
6613 | spa_history_log_internal(spa, "detach", tx, |
6614 | "vdev=%s", vml[c]->vdev_path); | |
e0ab3ab5 | 6615 | |
428870ff | 6616 | vdev_free(vml[c]); |
34dc7c2f | 6617 | } |
34dc7c2f | 6618 | } |
e0ab3ab5 | 6619 | spa->spa_avz_action = AVZ_ACTION_REBUILD; |
428870ff BB |
6620 | vdev_config_dirty(spa->spa_root_vdev); |
6621 | spa->spa_config_splitting = NULL; | |
6622 | nvlist_free(nvl); | |
6623 | if (error == 0) | |
6624 | dmu_tx_commit(tx); | |
6625 | (void) spa_vdev_exit(spa, NULL, txg, 0); | |
6626 | ||
6627 | if (zio_injection_enabled) | |
6628 | zio_handle_panic_injection(spa, FTAG, 3); | |
6629 | ||
6630 | /* split is complete; log a history record */ | |
6f1ffb06 MA |
6631 | spa_history_log_internal(newspa, "split", NULL, |
6632 | "from pool %s", spa_name(spa)); | |
428870ff BB |
6633 | |
6634 | kmem_free(vml, children * sizeof (vdev_t *)); | |
6635 | ||
6636 | /* if we're not going to mount the filesystems in userland, export */ | |
6637 | if (exp) | |
6638 | error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL, | |
6639 | B_FALSE, B_FALSE); | |
6640 | ||
6641 | return (error); | |
6642 | ||
6643 | out: | |
6644 | spa_unload(newspa); | |
6645 | spa_deactivate(newspa); | |
6646 | spa_remove(newspa); | |
6647 | ||
6648 | txg = spa_vdev_config_enter(spa); | |
6649 | ||
6650 | /* re-online all offlined disks */ | |
6651 | for (c = 0; c < children; c++) { | |
6652 | if (vml[c] != NULL) | |
6653 | vml[c]->vdev_offline = B_FALSE; | |
6654 | } | |
6655 | vdev_reopen(spa->spa_root_vdev); | |
6656 | ||
6657 | nvlist_free(spa->spa_config_splitting); | |
6658 | spa->spa_config_splitting = NULL; | |
6659 | (void) spa_vdev_exit(spa, NULL, txg, error); | |
34dc7c2f | 6660 | |
428870ff | 6661 | kmem_free(vml, children * sizeof (vdev_t *)); |
34dc7c2f BB |
6662 | return (error); |
6663 | } | |
6664 | ||
34dc7c2f BB |
6665 | /* |
6666 | * Find any device that's done replacing, or a vdev marked 'unspare' that's | |
d3cc8b15 | 6667 | * currently spared, so we can detach it. |
34dc7c2f BB |
6668 | */ |
6669 | static vdev_t * | |
6670 | spa_vdev_resilver_done_hunt(vdev_t *vd) | |
6671 | { | |
6672 | vdev_t *newvd, *oldvd; | |
34dc7c2f | 6673 | |
1c27024e | 6674 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
6675 | oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
6676 | if (oldvd != NULL) | |
6677 | return (oldvd); | |
6678 | } | |
6679 | ||
6680 | /* | |
572e2857 BB |
6681 | * Check for a completed replacement. We always consider the first |
6682 | * vdev in the list to be the oldest vdev, and the last one to be | |
6683 | * the newest (see spa_vdev_attach() for how that works). In | |
6684 | * the case where the newest vdev is faulted, we will not automatically | |
6685 | * remove it after a resilver completes. This is OK as it will require | |
6686 | * user intervention to determine which disk the admin wishes to keep. | |
34dc7c2f | 6687 | */ |
572e2857 BB |
6688 | if (vd->vdev_ops == &vdev_replacing_ops) { |
6689 | ASSERT(vd->vdev_children > 1); | |
6690 | ||
6691 | newvd = vd->vdev_child[vd->vdev_children - 1]; | |
34dc7c2f | 6692 | oldvd = vd->vdev_child[0]; |
34dc7c2f | 6693 | |
fb5f0bc8 | 6694 | if (vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 6695 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
fb5f0bc8 | 6696 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 6697 | return (oldvd); |
34dc7c2f BB |
6698 | } |
6699 | ||
6700 | /* | |
6701 | * Check for a completed resilver with the 'unspare' flag set. | |
f65fbee1 | 6702 | * Also potentially update faulted state. |
34dc7c2f | 6703 | */ |
572e2857 BB |
6704 | if (vd->vdev_ops == &vdev_spare_ops) { |
6705 | vdev_t *first = vd->vdev_child[0]; | |
6706 | vdev_t *last = vd->vdev_child[vd->vdev_children - 1]; | |
6707 | ||
6708 | if (last->vdev_unspare) { | |
6709 | oldvd = first; | |
6710 | newvd = last; | |
6711 | } else if (first->vdev_unspare) { | |
6712 | oldvd = last; | |
6713 | newvd = first; | |
6714 | } else { | |
6715 | oldvd = NULL; | |
6716 | } | |
34dc7c2f | 6717 | |
572e2857 | 6718 | if (oldvd != NULL && |
fb5f0bc8 | 6719 | vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 6720 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
572e2857 | 6721 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 6722 | return (oldvd); |
572e2857 | 6723 | |
f65fbee1 JJ |
6724 | vdev_propagate_state(vd); |
6725 | ||
572e2857 BB |
6726 | /* |
6727 | * If there are more than two spares attached to a disk, | |
6728 | * and those spares are not required, then we want to | |
6729 | * attempt to free them up now so that they can be used | |
6730 | * by other pools. Once we're back down to a single | |
6731 | * disk+spare, we stop removing them. | |
6732 | */ | |
6733 | if (vd->vdev_children > 2) { | |
6734 | newvd = vd->vdev_child[1]; | |
6735 | ||
6736 | if (newvd->vdev_isspare && last->vdev_isspare && | |
6737 | vdev_dtl_empty(last, DTL_MISSING) && | |
6738 | vdev_dtl_empty(last, DTL_OUTAGE) && | |
6739 | !vdev_dtl_required(newvd)) | |
6740 | return (newvd); | |
34dc7c2f | 6741 | } |
34dc7c2f BB |
6742 | } |
6743 | ||
6744 | return (NULL); | |
6745 | } | |
6746 | ||
6747 | static void | |
6748 | spa_vdev_resilver_done(spa_t *spa) | |
6749 | { | |
fb5f0bc8 BB |
6750 | vdev_t *vd, *pvd, *ppvd; |
6751 | uint64_t guid, sguid, pguid, ppguid; | |
34dc7c2f | 6752 | |
fb5f0bc8 | 6753 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
6754 | |
6755 | while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { | |
fb5f0bc8 BB |
6756 | pvd = vd->vdev_parent; |
6757 | ppvd = pvd->vdev_parent; | |
34dc7c2f | 6758 | guid = vd->vdev_guid; |
fb5f0bc8 BB |
6759 | pguid = pvd->vdev_guid; |
6760 | ppguid = ppvd->vdev_guid; | |
6761 | sguid = 0; | |
34dc7c2f BB |
6762 | /* |
6763 | * If we have just finished replacing a hot spared device, then | |
6764 | * we need to detach the parent's first child (the original hot | |
6765 | * spare) as well. | |
6766 | */ | |
572e2857 BB |
6767 | if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0 && |
6768 | ppvd->vdev_children == 2) { | |
34dc7c2f | 6769 | ASSERT(pvd->vdev_ops == &vdev_replacing_ops); |
fb5f0bc8 | 6770 | sguid = ppvd->vdev_child[1]->vdev_guid; |
34dc7c2f | 6771 | } |
5d1f7fb6 GW |
6772 | ASSERT(vd->vdev_resilver_txg == 0 || !vdev_dtl_required(vd)); |
6773 | ||
fb5f0bc8 BB |
6774 | spa_config_exit(spa, SCL_ALL, FTAG); |
6775 | if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) | |
34dc7c2f | 6776 | return; |
fb5f0bc8 | 6777 | if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) |
34dc7c2f | 6778 | return; |
fb5f0bc8 | 6779 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
6780 | } |
6781 | ||
fb5f0bc8 | 6782 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
6783 | } |
6784 | ||
6785 | /* | |
428870ff | 6786 | * Update the stored path or FRU for this vdev. |
34dc7c2f BB |
6787 | */ |
6788 | int | |
9babb374 BB |
6789 | spa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value, |
6790 | boolean_t ispath) | |
34dc7c2f | 6791 | { |
b128c09f | 6792 | vdev_t *vd; |
428870ff | 6793 | boolean_t sync = B_FALSE; |
34dc7c2f | 6794 | |
572e2857 BB |
6795 | ASSERT(spa_writeable(spa)); |
6796 | ||
428870ff | 6797 | spa_vdev_state_enter(spa, SCL_ALL); |
34dc7c2f | 6798 | |
9babb374 | 6799 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
428870ff | 6800 | return (spa_vdev_state_exit(spa, NULL, ENOENT)); |
34dc7c2f BB |
6801 | |
6802 | if (!vd->vdev_ops->vdev_op_leaf) | |
428870ff | 6803 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 6804 | |
9babb374 | 6805 | if (ispath) { |
428870ff BB |
6806 | if (strcmp(value, vd->vdev_path) != 0) { |
6807 | spa_strfree(vd->vdev_path); | |
6808 | vd->vdev_path = spa_strdup(value); | |
6809 | sync = B_TRUE; | |
6810 | } | |
9babb374 | 6811 | } else { |
428870ff BB |
6812 | if (vd->vdev_fru == NULL) { |
6813 | vd->vdev_fru = spa_strdup(value); | |
6814 | sync = B_TRUE; | |
6815 | } else if (strcmp(value, vd->vdev_fru) != 0) { | |
9babb374 | 6816 | spa_strfree(vd->vdev_fru); |
428870ff BB |
6817 | vd->vdev_fru = spa_strdup(value); |
6818 | sync = B_TRUE; | |
6819 | } | |
9babb374 | 6820 | } |
34dc7c2f | 6821 | |
428870ff | 6822 | return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0)); |
34dc7c2f BB |
6823 | } |
6824 | ||
9babb374 BB |
6825 | int |
6826 | spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) | |
6827 | { | |
6828 | return (spa_vdev_set_common(spa, guid, newpath, B_TRUE)); | |
6829 | } | |
6830 | ||
6831 | int | |
6832 | spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru) | |
6833 | { | |
6834 | return (spa_vdev_set_common(spa, guid, newfru, B_FALSE)); | |
6835 | } | |
6836 | ||
34dc7c2f BB |
6837 | /* |
6838 | * ========================================================================== | |
428870ff | 6839 | * SPA Scanning |
34dc7c2f BB |
6840 | * ========================================================================== |
6841 | */ | |
0ea05c64 AP |
6842 | int |
6843 | spa_scrub_pause_resume(spa_t *spa, pool_scrub_cmd_t cmd) | |
6844 | { | |
6845 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
6846 | ||
6847 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
6848 | return (SET_ERROR(EBUSY)); | |
6849 | ||
6850 | return (dsl_scrub_set_pause_resume(spa->spa_dsl_pool, cmd)); | |
6851 | } | |
34dc7c2f | 6852 | |
34dc7c2f | 6853 | int |
428870ff BB |
6854 | spa_scan_stop(spa_t *spa) |
6855 | { | |
6856 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
6857 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
2e528b49 | 6858 | return (SET_ERROR(EBUSY)); |
428870ff BB |
6859 | return (dsl_scan_cancel(spa->spa_dsl_pool)); |
6860 | } | |
6861 | ||
6862 | int | |
6863 | spa_scan(spa_t *spa, pool_scan_func_t func) | |
34dc7c2f | 6864 | { |
b128c09f | 6865 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); |
34dc7c2f | 6866 | |
428870ff | 6867 | if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE) |
2e528b49 | 6868 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f | 6869 | |
34dc7c2f | 6870 | /* |
b128c09f BB |
6871 | * If a resilver was requested, but there is no DTL on a |
6872 | * writeable leaf device, we have nothing to do. | |
34dc7c2f | 6873 | */ |
428870ff | 6874 | if (func == POOL_SCAN_RESILVER && |
b128c09f BB |
6875 | !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { |
6876 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f BB |
6877 | return (0); |
6878 | } | |
6879 | ||
428870ff | 6880 | return (dsl_scan(spa->spa_dsl_pool, func)); |
34dc7c2f BB |
6881 | } |
6882 | ||
6883 | /* | |
6884 | * ========================================================================== | |
6885 | * SPA async task processing | |
6886 | * ========================================================================== | |
6887 | */ | |
6888 | ||
6889 | static void | |
6890 | spa_async_remove(spa_t *spa, vdev_t *vd) | |
6891 | { | |
b128c09f | 6892 | if (vd->vdev_remove_wanted) { |
428870ff BB |
6893 | vd->vdev_remove_wanted = B_FALSE; |
6894 | vd->vdev_delayed_close = B_FALSE; | |
b128c09f | 6895 | vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); |
428870ff BB |
6896 | |
6897 | /* | |
6898 | * We want to clear the stats, but we don't want to do a full | |
6899 | * vdev_clear() as that will cause us to throw away | |
6900 | * degraded/faulted state as well as attempt to reopen the | |
6901 | * device, all of which is a waste. | |
6902 | */ | |
6903 | vd->vdev_stat.vs_read_errors = 0; | |
6904 | vd->vdev_stat.vs_write_errors = 0; | |
6905 | vd->vdev_stat.vs_checksum_errors = 0; | |
6906 | ||
b128c09f BB |
6907 | vdev_state_dirty(vd->vdev_top); |
6908 | } | |
34dc7c2f | 6909 | |
1c27024e | 6910 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f BB |
6911 | spa_async_remove(spa, vd->vdev_child[c]); |
6912 | } | |
6913 | ||
6914 | static void | |
6915 | spa_async_probe(spa_t *spa, vdev_t *vd) | |
6916 | { | |
6917 | if (vd->vdev_probe_wanted) { | |
428870ff | 6918 | vd->vdev_probe_wanted = B_FALSE; |
b128c09f | 6919 | vdev_reopen(vd); /* vdev_open() does the actual probe */ |
34dc7c2f | 6920 | } |
b128c09f | 6921 | |
1c27024e | 6922 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f | 6923 | spa_async_probe(spa, vd->vdev_child[c]); |
34dc7c2f BB |
6924 | } |
6925 | ||
9babb374 BB |
6926 | static void |
6927 | spa_async_autoexpand(spa_t *spa, vdev_t *vd) | |
6928 | { | |
9babb374 BB |
6929 | if (!spa->spa_autoexpand) |
6930 | return; | |
6931 | ||
1c27024e | 6932 | for (int c = 0; c < vd->vdev_children; c++) { |
9babb374 BB |
6933 | vdev_t *cvd = vd->vdev_child[c]; |
6934 | spa_async_autoexpand(spa, cvd); | |
6935 | } | |
6936 | ||
6937 | if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL) | |
6938 | return; | |
6939 | ||
12fa0466 | 6940 | spa_event_notify(vd->vdev_spa, vd, NULL, ESC_ZFS_VDEV_AUTOEXPAND); |
9babb374 BB |
6941 | } |
6942 | ||
34dc7c2f | 6943 | static void |
c25b8f99 | 6944 | spa_async_thread(void *arg) |
34dc7c2f | 6945 | { |
c25b8f99 | 6946 | spa_t *spa = (spa_t *)arg; |
80a91e74 | 6947 | dsl_pool_t *dp = spa->spa_dsl_pool; |
867959b5 | 6948 | int tasks; |
34dc7c2f BB |
6949 | |
6950 | ASSERT(spa->spa_sync_on); | |
6951 | ||
6952 | mutex_enter(&spa->spa_async_lock); | |
6953 | tasks = spa->spa_async_tasks; | |
6954 | spa->spa_async_tasks = 0; | |
6955 | mutex_exit(&spa->spa_async_lock); | |
6956 | ||
6957 | /* | |
6958 | * See if the config needs to be updated. | |
6959 | */ | |
6960 | if (tasks & SPA_ASYNC_CONFIG_UPDATE) { | |
428870ff | 6961 | uint64_t old_space, new_space; |
9babb374 | 6962 | |
34dc7c2f | 6963 | mutex_enter(&spa_namespace_lock); |
428870ff | 6964 | old_space = metaslab_class_get_space(spa_normal_class(spa)); |
cc99f275 DB |
6965 | old_space += metaslab_class_get_space(spa_special_class(spa)); |
6966 | old_space += metaslab_class_get_space(spa_dedup_class(spa)); | |
6967 | ||
34dc7c2f | 6968 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
cc99f275 | 6969 | |
428870ff | 6970 | new_space = metaslab_class_get_space(spa_normal_class(spa)); |
cc99f275 DB |
6971 | new_space += metaslab_class_get_space(spa_special_class(spa)); |
6972 | new_space += metaslab_class_get_space(spa_dedup_class(spa)); | |
34dc7c2f | 6973 | mutex_exit(&spa_namespace_lock); |
9babb374 BB |
6974 | |
6975 | /* | |
6976 | * If the pool grew as a result of the config update, | |
6977 | * then log an internal history event. | |
6978 | */ | |
428870ff | 6979 | if (new_space != old_space) { |
6f1ffb06 | 6980 | spa_history_log_internal(spa, "vdev online", NULL, |
45d1cae3 | 6981 | "pool '%s' size: %llu(+%llu)", |
428870ff | 6982 | spa_name(spa), new_space, new_space - old_space); |
9babb374 | 6983 | } |
34dc7c2f BB |
6984 | } |
6985 | ||
6986 | /* | |
6987 | * See if any devices need to be marked REMOVED. | |
34dc7c2f | 6988 | */ |
b128c09f | 6989 | if (tasks & SPA_ASYNC_REMOVE) { |
428870ff | 6990 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 6991 | spa_async_remove(spa, spa->spa_root_vdev); |
867959b5 | 6992 | for (int i = 0; i < spa->spa_l2cache.sav_count; i++) |
b128c09f | 6993 | spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); |
867959b5 | 6994 | for (int i = 0; i < spa->spa_spares.sav_count; i++) |
b128c09f BB |
6995 | spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); |
6996 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
34dc7c2f BB |
6997 | } |
6998 | ||
9babb374 BB |
6999 | if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) { |
7000 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
7001 | spa_async_autoexpand(spa, spa->spa_root_vdev); | |
7002 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
7003 | } | |
7004 | ||
34dc7c2f | 7005 | /* |
b128c09f | 7006 | * See if any devices need to be probed. |
34dc7c2f | 7007 | */ |
b128c09f | 7008 | if (tasks & SPA_ASYNC_PROBE) { |
428870ff | 7009 | spa_vdev_state_enter(spa, SCL_NONE); |
b128c09f BB |
7010 | spa_async_probe(spa, spa->spa_root_vdev); |
7011 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
7012 | } | |
34dc7c2f BB |
7013 | |
7014 | /* | |
b128c09f | 7015 | * If any devices are done replacing, detach them. |
34dc7c2f | 7016 | */ |
b128c09f BB |
7017 | if (tasks & SPA_ASYNC_RESILVER_DONE) |
7018 | spa_vdev_resilver_done(spa); | |
34dc7c2f BB |
7019 | |
7020 | /* | |
7021 | * Kick off a resilver. | |
7022 | */ | |
80a91e74 TC |
7023 | if (tasks & SPA_ASYNC_RESILVER && |
7024 | (!dsl_scan_resilvering(dp) || | |
7025 | !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_RESILVER_DEFER))) | |
7026 | dsl_resilver_restart(dp, 0); | |
34dc7c2f BB |
7027 | |
7028 | /* | |
7029 | * Let the world know that we're done. | |
7030 | */ | |
7031 | mutex_enter(&spa->spa_async_lock); | |
7032 | spa->spa_async_thread = NULL; | |
7033 | cv_broadcast(&spa->spa_async_cv); | |
7034 | mutex_exit(&spa->spa_async_lock); | |
7035 | thread_exit(); | |
7036 | } | |
7037 | ||
7038 | void | |
7039 | spa_async_suspend(spa_t *spa) | |
7040 | { | |
7041 | mutex_enter(&spa->spa_async_lock); | |
7042 | spa->spa_async_suspended++; | |
9d5b5245 | 7043 | while (spa->spa_async_thread != NULL) |
34dc7c2f BB |
7044 | cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); |
7045 | mutex_exit(&spa->spa_async_lock); | |
a1d477c2 MA |
7046 | |
7047 | spa_vdev_remove_suspend(spa); | |
9d5b5245 SD |
7048 | |
7049 | zthr_t *condense_thread = spa->spa_condense_zthr; | |
7050 | if (condense_thread != NULL && zthr_isrunning(condense_thread)) | |
7051 | VERIFY0(zthr_cancel(condense_thread)); | |
d2734cce SD |
7052 | |
7053 | zthr_t *discard_thread = spa->spa_checkpoint_discard_zthr; | |
7054 | if (discard_thread != NULL && zthr_isrunning(discard_thread)) | |
7055 | VERIFY0(zthr_cancel(discard_thread)); | |
34dc7c2f BB |
7056 | } |
7057 | ||
7058 | void | |
7059 | spa_async_resume(spa_t *spa) | |
7060 | { | |
7061 | mutex_enter(&spa->spa_async_lock); | |
7062 | ASSERT(spa->spa_async_suspended != 0); | |
7063 | spa->spa_async_suspended--; | |
7064 | mutex_exit(&spa->spa_async_lock); | |
a1d477c2 | 7065 | spa_restart_removal(spa); |
9d5b5245 SD |
7066 | |
7067 | zthr_t *condense_thread = spa->spa_condense_zthr; | |
7068 | if (condense_thread != NULL && !zthr_isrunning(condense_thread)) | |
7069 | zthr_resume(condense_thread); | |
d2734cce SD |
7070 | |
7071 | zthr_t *discard_thread = spa->spa_checkpoint_discard_zthr; | |
7072 | if (discard_thread != NULL && !zthr_isrunning(discard_thread)) | |
7073 | zthr_resume(discard_thread); | |
34dc7c2f BB |
7074 | } |
7075 | ||
e6cfd633 WA |
7076 | static boolean_t |
7077 | spa_async_tasks_pending(spa_t *spa) | |
7078 | { | |
7079 | uint_t non_config_tasks; | |
7080 | uint_t config_task; | |
7081 | boolean_t config_task_suspended; | |
7082 | ||
7083 | non_config_tasks = spa->spa_async_tasks & ~SPA_ASYNC_CONFIG_UPDATE; | |
7084 | config_task = spa->spa_async_tasks & SPA_ASYNC_CONFIG_UPDATE; | |
7085 | if (spa->spa_ccw_fail_time == 0) { | |
7086 | config_task_suspended = B_FALSE; | |
7087 | } else { | |
7088 | config_task_suspended = | |
7089 | (gethrtime() - spa->spa_ccw_fail_time) < | |
05852b34 | 7090 | ((hrtime_t)zfs_ccw_retry_interval * NANOSEC); |
e6cfd633 WA |
7091 | } |
7092 | ||
7093 | return (non_config_tasks || (config_task && !config_task_suspended)); | |
7094 | } | |
7095 | ||
34dc7c2f BB |
7096 | static void |
7097 | spa_async_dispatch(spa_t *spa) | |
7098 | { | |
7099 | mutex_enter(&spa->spa_async_lock); | |
e6cfd633 WA |
7100 | if (spa_async_tasks_pending(spa) && |
7101 | !spa->spa_async_suspended && | |
34dc7c2f | 7102 | spa->spa_async_thread == NULL && |
e6cfd633 | 7103 | rootdir != NULL) |
34dc7c2f BB |
7104 | spa->spa_async_thread = thread_create(NULL, 0, |
7105 | spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
7106 | mutex_exit(&spa->spa_async_lock); | |
7107 | } | |
7108 | ||
7109 | void | |
7110 | spa_async_request(spa_t *spa, int task) | |
7111 | { | |
428870ff | 7112 | zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task); |
34dc7c2f BB |
7113 | mutex_enter(&spa->spa_async_lock); |
7114 | spa->spa_async_tasks |= task; | |
7115 | mutex_exit(&spa->spa_async_lock); | |
7116 | } | |
7117 | ||
7118 | /* | |
7119 | * ========================================================================== | |
7120 | * SPA syncing routines | |
7121 | * ========================================================================== | |
7122 | */ | |
7123 | ||
428870ff BB |
7124 | static int |
7125 | bpobj_enqueue_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
34dc7c2f | 7126 | { |
428870ff BB |
7127 | bpobj_t *bpo = arg; |
7128 | bpobj_enqueue(bpo, bp, tx); | |
7129 | return (0); | |
7130 | } | |
34dc7c2f | 7131 | |
428870ff BB |
7132 | static int |
7133 | spa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
7134 | { | |
7135 | zio_t *zio = arg; | |
34dc7c2f | 7136 | |
428870ff BB |
7137 | zio_nowait(zio_free_sync(zio, zio->io_spa, dmu_tx_get_txg(tx), bp, |
7138 | zio->io_flags)); | |
7139 | return (0); | |
34dc7c2f BB |
7140 | } |
7141 | ||
e8b96c60 MA |
7142 | /* |
7143 | * Note: this simple function is not inlined to make it easier to dtrace the | |
7144 | * amount of time spent syncing frees. | |
7145 | */ | |
7146 | static void | |
7147 | spa_sync_frees(spa_t *spa, bplist_t *bpl, dmu_tx_t *tx) | |
7148 | { | |
7149 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
7150 | bplist_iterate(bpl, spa_free_sync_cb, zio, tx); | |
7151 | VERIFY(zio_wait(zio) == 0); | |
7152 | } | |
7153 | ||
7154 | /* | |
7155 | * Note: this simple function is not inlined to make it easier to dtrace the | |
7156 | * amount of time spent syncing deferred frees. | |
7157 | */ | |
7158 | static void | |
7159 | spa_sync_deferred_frees(spa_t *spa, dmu_tx_t *tx) | |
7160 | { | |
7161 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
7162 | VERIFY3U(bpobj_iterate(&spa->spa_deferred_bpobj, | |
7163 | spa_free_sync_cb, zio, tx), ==, 0); | |
7164 | VERIFY0(zio_wait(zio)); | |
7165 | } | |
7166 | ||
34dc7c2f BB |
7167 | static void |
7168 | spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) | |
7169 | { | |
7170 | char *packed = NULL; | |
b128c09f | 7171 | size_t bufsize; |
34dc7c2f BB |
7172 | size_t nvsize = 0; |
7173 | dmu_buf_t *db; | |
7174 | ||
7175 | VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
7176 | ||
b128c09f BB |
7177 | /* |
7178 | * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration | |
b0bc7a84 | 7179 | * information. This avoids the dmu_buf_will_dirty() path and |
b128c09f BB |
7180 | * saves us a pre-read to get data we don't actually care about. |
7181 | */ | |
9ae529ec | 7182 | bufsize = P2ROUNDUP((uint64_t)nvsize, SPA_CONFIG_BLOCKSIZE); |
79c76d5b | 7183 | packed = vmem_alloc(bufsize, KM_SLEEP); |
34dc7c2f BB |
7184 | |
7185 | VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
79c76d5b | 7186 | KM_SLEEP) == 0); |
b128c09f | 7187 | bzero(packed + nvsize, bufsize - nvsize); |
34dc7c2f | 7188 | |
b128c09f | 7189 | dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); |
34dc7c2f | 7190 | |
00b46022 | 7191 | vmem_free(packed, bufsize); |
34dc7c2f BB |
7192 | |
7193 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
7194 | dmu_buf_will_dirty(db, tx); | |
7195 | *(uint64_t *)db->db_data = nvsize; | |
7196 | dmu_buf_rele(db, FTAG); | |
7197 | } | |
7198 | ||
7199 | static void | |
7200 | spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, | |
7201 | const char *config, const char *entry) | |
7202 | { | |
7203 | nvlist_t *nvroot; | |
7204 | nvlist_t **list; | |
7205 | int i; | |
7206 | ||
7207 | if (!sav->sav_sync) | |
7208 | return; | |
7209 | ||
7210 | /* | |
7211 | * Update the MOS nvlist describing the list of available devices. | |
7212 | * spa_validate_aux() will have already made sure this nvlist is | |
7213 | * valid and the vdevs are labeled appropriately. | |
7214 | */ | |
7215 | if (sav->sav_object == 0) { | |
7216 | sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
7217 | DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
7218 | sizeof (uint64_t), tx); | |
7219 | VERIFY(zap_update(spa->spa_meta_objset, | |
7220 | DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, | |
7221 | &sav->sav_object, tx) == 0); | |
7222 | } | |
7223 | ||
79c76d5b | 7224 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
7225 | if (sav->sav_count == 0) { |
7226 | VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
7227 | } else { | |
79c76d5b | 7228 | list = kmem_alloc(sav->sav_count*sizeof (void *), KM_SLEEP); |
34dc7c2f BB |
7229 | for (i = 0; i < sav->sav_count; i++) |
7230 | list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
428870ff | 7231 | B_FALSE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
7232 | VERIFY(nvlist_add_nvlist_array(nvroot, config, list, |
7233 | sav->sav_count) == 0); | |
7234 | for (i = 0; i < sav->sav_count; i++) | |
7235 | nvlist_free(list[i]); | |
7236 | kmem_free(list, sav->sav_count * sizeof (void *)); | |
7237 | } | |
7238 | ||
7239 | spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); | |
7240 | nvlist_free(nvroot); | |
7241 | ||
7242 | sav->sav_sync = B_FALSE; | |
7243 | } | |
7244 | ||
e0ab3ab5 JS |
7245 | /* |
7246 | * Rebuild spa's all-vdev ZAP from the vdev ZAPs indicated in each vdev_t. | |
7247 | * The all-vdev ZAP must be empty. | |
7248 | */ | |
7249 | static void | |
7250 | spa_avz_build(vdev_t *vd, uint64_t avz, dmu_tx_t *tx) | |
7251 | { | |
7252 | spa_t *spa = vd->vdev_spa; | |
e0ab3ab5 JS |
7253 | |
7254 | if (vd->vdev_top_zap != 0) { | |
7255 | VERIFY0(zap_add_int(spa->spa_meta_objset, avz, | |
7256 | vd->vdev_top_zap, tx)); | |
7257 | } | |
7258 | if (vd->vdev_leaf_zap != 0) { | |
7259 | VERIFY0(zap_add_int(spa->spa_meta_objset, avz, | |
7260 | vd->vdev_leaf_zap, tx)); | |
7261 | } | |
1c27024e | 7262 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
7263 | spa_avz_build(vd->vdev_child[i], avz, tx); |
7264 | } | |
7265 | } | |
7266 | ||
34dc7c2f BB |
7267 | static void |
7268 | spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) | |
7269 | { | |
7270 | nvlist_t *config; | |
7271 | ||
e0ab3ab5 JS |
7272 | /* |
7273 | * If the pool is being imported from a pre-per-vdev-ZAP version of ZFS, | |
7274 | * its config may not be dirty but we still need to build per-vdev ZAPs. | |
7275 | * Similarly, if the pool is being assembled (e.g. after a split), we | |
7276 | * need to rebuild the AVZ although the config may not be dirty. | |
7277 | */ | |
7278 | if (list_is_empty(&spa->spa_config_dirty_list) && | |
7279 | spa->spa_avz_action == AVZ_ACTION_NONE) | |
34dc7c2f BB |
7280 | return; |
7281 | ||
b128c09f BB |
7282 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
7283 | ||
e0ab3ab5 | 7284 | ASSERT(spa->spa_avz_action == AVZ_ACTION_NONE || |
38640550 | 7285 | spa->spa_avz_action == AVZ_ACTION_INITIALIZE || |
e0ab3ab5 JS |
7286 | spa->spa_all_vdev_zaps != 0); |
7287 | ||
7288 | if (spa->spa_avz_action == AVZ_ACTION_REBUILD) { | |
e0ab3ab5 JS |
7289 | /* Make and build the new AVZ */ |
7290 | uint64_t new_avz = zap_create(spa->spa_meta_objset, | |
7291 | DMU_OTN_ZAP_METADATA, DMU_OT_NONE, 0, tx); | |
7292 | spa_avz_build(spa->spa_root_vdev, new_avz, tx); | |
7293 | ||
7294 | /* Diff old AVZ with new one */ | |
1c27024e DB |
7295 | zap_cursor_t zc; |
7296 | zap_attribute_t za; | |
7297 | ||
e0ab3ab5 JS |
7298 | for (zap_cursor_init(&zc, spa->spa_meta_objset, |
7299 | spa->spa_all_vdev_zaps); | |
7300 | zap_cursor_retrieve(&zc, &za) == 0; | |
7301 | zap_cursor_advance(&zc)) { | |
7302 | uint64_t vdzap = za.za_first_integer; | |
7303 | if (zap_lookup_int(spa->spa_meta_objset, new_avz, | |
7304 | vdzap) == ENOENT) { | |
7305 | /* | |
7306 | * ZAP is listed in old AVZ but not in new one; | |
7307 | * destroy it | |
7308 | */ | |
7309 | VERIFY0(zap_destroy(spa->spa_meta_objset, vdzap, | |
7310 | tx)); | |
7311 | } | |
7312 | } | |
7313 | ||
7314 | zap_cursor_fini(&zc); | |
7315 | ||
7316 | /* Destroy the old AVZ */ | |
7317 | VERIFY0(zap_destroy(spa->spa_meta_objset, | |
7318 | spa->spa_all_vdev_zaps, tx)); | |
7319 | ||
7320 | /* Replace the old AVZ in the dir obj with the new one */ | |
7321 | VERIFY0(zap_update(spa->spa_meta_objset, | |
7322 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_VDEV_ZAP_MAP, | |
7323 | sizeof (new_avz), 1, &new_avz, tx)); | |
7324 | ||
7325 | spa->spa_all_vdev_zaps = new_avz; | |
7326 | } else if (spa->spa_avz_action == AVZ_ACTION_DESTROY) { | |
7327 | zap_cursor_t zc; | |
7328 | zap_attribute_t za; | |
7329 | ||
7330 | /* Walk through the AVZ and destroy all listed ZAPs */ | |
7331 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
7332 | spa->spa_all_vdev_zaps); | |
7333 | zap_cursor_retrieve(&zc, &za) == 0; | |
7334 | zap_cursor_advance(&zc)) { | |
7335 | uint64_t zap = za.za_first_integer; | |
7336 | VERIFY0(zap_destroy(spa->spa_meta_objset, zap, tx)); | |
7337 | } | |
7338 | ||
7339 | zap_cursor_fini(&zc); | |
7340 | ||
7341 | /* Destroy and unlink the AVZ itself */ | |
7342 | VERIFY0(zap_destroy(spa->spa_meta_objset, | |
7343 | spa->spa_all_vdev_zaps, tx)); | |
7344 | VERIFY0(zap_remove(spa->spa_meta_objset, | |
7345 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_VDEV_ZAP_MAP, tx)); | |
7346 | spa->spa_all_vdev_zaps = 0; | |
7347 | } | |
7348 | ||
7349 | if (spa->spa_all_vdev_zaps == 0) { | |
7350 | spa->spa_all_vdev_zaps = zap_create_link(spa->spa_meta_objset, | |
7351 | DMU_OTN_ZAP_METADATA, DMU_POOL_DIRECTORY_OBJECT, | |
7352 | DMU_POOL_VDEV_ZAP_MAP, tx); | |
7353 | } | |
7354 | spa->spa_avz_action = AVZ_ACTION_NONE; | |
7355 | ||
7356 | /* Create ZAPs for vdevs that don't have them. */ | |
7357 | vdev_construct_zaps(spa->spa_root_vdev, tx); | |
7358 | ||
b128c09f BB |
7359 | config = spa_config_generate(spa, spa->spa_root_vdev, |
7360 | dmu_tx_get_txg(tx), B_FALSE); | |
7361 | ||
ea0b2538 GW |
7362 | /* |
7363 | * If we're upgrading the spa version then make sure that | |
7364 | * the config object gets updated with the correct version. | |
7365 | */ | |
7366 | if (spa->spa_ubsync.ub_version < spa->spa_uberblock.ub_version) | |
7367 | fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
7368 | spa->spa_uberblock.ub_version); | |
7369 | ||
b128c09f | 7370 | spa_config_exit(spa, SCL_STATE, FTAG); |
34dc7c2f | 7371 | |
8a5fc748 | 7372 | nvlist_free(spa->spa_config_syncing); |
34dc7c2f BB |
7373 | spa->spa_config_syncing = config; |
7374 | ||
7375 | spa_sync_nvlist(spa, spa->spa_config_object, config, tx); | |
7376 | } | |
7377 | ||
9ae529ec | 7378 | static void |
13fe0198 | 7379 | spa_sync_version(void *arg, dmu_tx_t *tx) |
9ae529ec | 7380 | { |
13fe0198 MA |
7381 | uint64_t *versionp = arg; |
7382 | uint64_t version = *versionp; | |
7383 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
9ae529ec CS |
7384 | |
7385 | /* | |
7386 | * Setting the version is special cased when first creating the pool. | |
7387 | */ | |
7388 | ASSERT(tx->tx_txg != TXG_INITIAL); | |
7389 | ||
8dca0a9a | 7390 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); |
9ae529ec CS |
7391 | ASSERT(version >= spa_version(spa)); |
7392 | ||
7393 | spa->spa_uberblock.ub_version = version; | |
7394 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 | 7395 | spa_history_log_internal(spa, "set", tx, "version=%lld", version); |
9ae529ec CS |
7396 | } |
7397 | ||
34dc7c2f BB |
7398 | /* |
7399 | * Set zpool properties. | |
7400 | */ | |
7401 | static void | |
13fe0198 | 7402 | spa_sync_props(void *arg, dmu_tx_t *tx) |
34dc7c2f | 7403 | { |
13fe0198 MA |
7404 | nvlist_t *nvp = arg; |
7405 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
34dc7c2f | 7406 | objset_t *mos = spa->spa_meta_objset; |
9ae529ec | 7407 | nvpair_t *elem = NULL; |
b128c09f BB |
7408 | |
7409 | mutex_enter(&spa->spa_props_lock); | |
34dc7c2f | 7410 | |
34dc7c2f | 7411 | while ((elem = nvlist_next_nvpair(nvp, elem))) { |
9ae529ec CS |
7412 | uint64_t intval; |
7413 | char *strval, *fname; | |
7414 | zpool_prop_t prop; | |
7415 | const char *propname; | |
7416 | zprop_type_t proptype; | |
fa86b5db | 7417 | spa_feature_t fid; |
9ae529ec | 7418 | |
31864e3d BB |
7419 | switch (prop = zpool_name_to_prop(nvpair_name(elem))) { |
7420 | case ZPOOL_PROP_INVAL: | |
9ae529ec CS |
7421 | /* |
7422 | * We checked this earlier in spa_prop_validate(). | |
7423 | */ | |
7424 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
7425 | ||
7426 | fname = strchr(nvpair_name(elem), '@') + 1; | |
fa86b5db | 7427 | VERIFY0(zfeature_lookup_name(fname, &fid)); |
9ae529ec | 7428 | |
fa86b5db | 7429 | spa_feature_enable(spa, fid, tx); |
6f1ffb06 MA |
7430 | spa_history_log_internal(spa, "set", tx, |
7431 | "%s=enabled", nvpair_name(elem)); | |
9ae529ec CS |
7432 | break; |
7433 | ||
34dc7c2f | 7434 | case ZPOOL_PROP_VERSION: |
93cf2076 | 7435 | intval = fnvpair_value_uint64(elem); |
34dc7c2f | 7436 | /* |
4e33ba4c | 7437 | * The version is synced separately before other |
9ae529ec | 7438 | * properties and should be correct by now. |
34dc7c2f | 7439 | */ |
9ae529ec | 7440 | ASSERT3U(spa_version(spa), >=, intval); |
34dc7c2f BB |
7441 | break; |
7442 | ||
7443 | case ZPOOL_PROP_ALTROOT: | |
7444 | /* | |
7445 | * 'altroot' is a non-persistent property. It should | |
7446 | * have been set temporarily at creation or import time. | |
7447 | */ | |
7448 | ASSERT(spa->spa_root != NULL); | |
7449 | break; | |
7450 | ||
572e2857 | 7451 | case ZPOOL_PROP_READONLY: |
34dc7c2f BB |
7452 | case ZPOOL_PROP_CACHEFILE: |
7453 | /* | |
572e2857 BB |
7454 | * 'readonly' and 'cachefile' are also non-persisitent |
7455 | * properties. | |
34dc7c2f | 7456 | */ |
34dc7c2f | 7457 | break; |
d96eb2b1 | 7458 | case ZPOOL_PROP_COMMENT: |
93cf2076 | 7459 | strval = fnvpair_value_string(elem); |
d96eb2b1 DM |
7460 | if (spa->spa_comment != NULL) |
7461 | spa_strfree(spa->spa_comment); | |
7462 | spa->spa_comment = spa_strdup(strval); | |
7463 | /* | |
7464 | * We need to dirty the configuration on all the vdevs | |
7465 | * so that their labels get updated. It's unnecessary | |
7466 | * to do this for pool creation since the vdev's | |
4e33ba4c | 7467 | * configuration has already been dirtied. |
d96eb2b1 DM |
7468 | */ |
7469 | if (tx->tx_txg != TXG_INITIAL) | |
7470 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 MA |
7471 | spa_history_log_internal(spa, "set", tx, |
7472 | "%s=%s", nvpair_name(elem), strval); | |
d96eb2b1 | 7473 | break; |
34dc7c2f BB |
7474 | default: |
7475 | /* | |
7476 | * Set pool property values in the poolprops mos object. | |
7477 | */ | |
34dc7c2f | 7478 | if (spa->spa_pool_props_object == 0) { |
9ae529ec CS |
7479 | spa->spa_pool_props_object = |
7480 | zap_create_link(mos, DMU_OT_POOL_PROPS, | |
34dc7c2f | 7481 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, |
9ae529ec | 7482 | tx); |
34dc7c2f | 7483 | } |
34dc7c2f BB |
7484 | |
7485 | /* normalize the property name */ | |
7486 | propname = zpool_prop_to_name(prop); | |
7487 | proptype = zpool_prop_get_type(prop); | |
7488 | ||
7489 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
7490 | ASSERT(proptype == PROP_TYPE_STRING); | |
93cf2076 GW |
7491 | strval = fnvpair_value_string(elem); |
7492 | VERIFY0(zap_update(mos, | |
34dc7c2f | 7493 | spa->spa_pool_props_object, propname, |
93cf2076 | 7494 | 1, strlen(strval) + 1, strval, tx)); |
6f1ffb06 MA |
7495 | spa_history_log_internal(spa, "set", tx, |
7496 | "%s=%s", nvpair_name(elem), strval); | |
34dc7c2f | 7497 | } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { |
93cf2076 | 7498 | intval = fnvpair_value_uint64(elem); |
34dc7c2f BB |
7499 | |
7500 | if (proptype == PROP_TYPE_INDEX) { | |
7501 | const char *unused; | |
93cf2076 GW |
7502 | VERIFY0(zpool_prop_index_to_string( |
7503 | prop, intval, &unused)); | |
34dc7c2f | 7504 | } |
93cf2076 | 7505 | VERIFY0(zap_update(mos, |
34dc7c2f | 7506 | spa->spa_pool_props_object, propname, |
93cf2076 | 7507 | 8, 1, &intval, tx)); |
6f1ffb06 MA |
7508 | spa_history_log_internal(spa, "set", tx, |
7509 | "%s=%lld", nvpair_name(elem), intval); | |
34dc7c2f BB |
7510 | } else { |
7511 | ASSERT(0); /* not allowed */ | |
7512 | } | |
7513 | ||
7514 | switch (prop) { | |
7515 | case ZPOOL_PROP_DELEGATION: | |
7516 | spa->spa_delegation = intval; | |
7517 | break; | |
7518 | case ZPOOL_PROP_BOOTFS: | |
7519 | spa->spa_bootfs = intval; | |
7520 | break; | |
7521 | case ZPOOL_PROP_FAILUREMODE: | |
7522 | spa->spa_failmode = intval; | |
7523 | break; | |
9babb374 BB |
7524 | case ZPOOL_PROP_AUTOEXPAND: |
7525 | spa->spa_autoexpand = intval; | |
428870ff BB |
7526 | if (tx->tx_txg != TXG_INITIAL) |
7527 | spa_async_request(spa, | |
7528 | SPA_ASYNC_AUTOEXPAND); | |
7529 | break; | |
379ca9cf OF |
7530 | case ZPOOL_PROP_MULTIHOST: |
7531 | spa->spa_multihost = intval; | |
7532 | break; | |
428870ff BB |
7533 | case ZPOOL_PROP_DEDUPDITTO: |
7534 | spa->spa_dedup_ditto = intval; | |
9babb374 | 7535 | break; |
34dc7c2f BB |
7536 | default: |
7537 | break; | |
7538 | } | |
7539 | } | |
7540 | ||
34dc7c2f | 7541 | } |
b128c09f BB |
7542 | |
7543 | mutex_exit(&spa->spa_props_lock); | |
34dc7c2f BB |
7544 | } |
7545 | ||
428870ff BB |
7546 | /* |
7547 | * Perform one-time upgrade on-disk changes. spa_version() does not | |
7548 | * reflect the new version this txg, so there must be no changes this | |
7549 | * txg to anything that the upgrade code depends on after it executes. | |
7550 | * Therefore this must be called after dsl_pool_sync() does the sync | |
7551 | * tasks. | |
7552 | */ | |
7553 | static void | |
7554 | spa_sync_upgrades(spa_t *spa, dmu_tx_t *tx) | |
7555 | { | |
7556 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
7557 | ||
7558 | ASSERT(spa->spa_sync_pass == 1); | |
7559 | ||
13fe0198 MA |
7560 | rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG); |
7561 | ||
428870ff BB |
7562 | if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && |
7563 | spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { | |
7564 | dsl_pool_create_origin(dp, tx); | |
7565 | ||
7566 | /* Keeping the origin open increases spa_minref */ | |
7567 | spa->spa_minref += 3; | |
7568 | } | |
7569 | ||
7570 | if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && | |
7571 | spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { | |
7572 | dsl_pool_upgrade_clones(dp, tx); | |
7573 | } | |
7574 | ||
7575 | if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES && | |
7576 | spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) { | |
7577 | dsl_pool_upgrade_dir_clones(dp, tx); | |
7578 | ||
7579 | /* Keeping the freedir open increases spa_minref */ | |
7580 | spa->spa_minref += 3; | |
7581 | } | |
9ae529ec CS |
7582 | |
7583 | if (spa->spa_ubsync.ub_version < SPA_VERSION_FEATURES && | |
7584 | spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
7585 | spa_feature_create_zap_objects(spa, tx); | |
7586 | } | |
62bdd5eb DL |
7587 | |
7588 | /* | |
7589 | * LZ4_COMPRESS feature's behaviour was changed to activate_on_enable | |
7590 | * when possibility to use lz4 compression for metadata was added | |
7591 | * Old pools that have this feature enabled must be upgraded to have | |
7592 | * this feature active | |
7593 | */ | |
7594 | if (spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
7595 | boolean_t lz4_en = spa_feature_is_enabled(spa, | |
7596 | SPA_FEATURE_LZ4_COMPRESS); | |
7597 | boolean_t lz4_ac = spa_feature_is_active(spa, | |
7598 | SPA_FEATURE_LZ4_COMPRESS); | |
7599 | ||
7600 | if (lz4_en && !lz4_ac) | |
7601 | spa_feature_incr(spa, SPA_FEATURE_LZ4_COMPRESS, tx); | |
7602 | } | |
3c67d83a TH |
7603 | |
7604 | /* | |
7605 | * If we haven't written the salt, do so now. Note that the | |
7606 | * feature may not be activated yet, but that's fine since | |
7607 | * the presence of this ZAP entry is backwards compatible. | |
7608 | */ | |
7609 | if (zap_contains(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
7610 | DMU_POOL_CHECKSUM_SALT) == ENOENT) { | |
7611 | VERIFY0(zap_add(spa->spa_meta_objset, | |
7612 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CHECKSUM_SALT, 1, | |
7613 | sizeof (spa->spa_cksum_salt.zcs_bytes), | |
7614 | spa->spa_cksum_salt.zcs_bytes, tx)); | |
7615 | } | |
7616 | ||
13fe0198 | 7617 | rrw_exit(&dp->dp_config_rwlock, FTAG); |
428870ff BB |
7618 | } |
7619 | ||
a1d477c2 MA |
7620 | static void |
7621 | vdev_indirect_state_sync_verify(vdev_t *vd) | |
7622 | { | |
7623 | ASSERTV(vdev_indirect_mapping_t *vim = vd->vdev_indirect_mapping); | |
7624 | ASSERTV(vdev_indirect_births_t *vib = vd->vdev_indirect_births); | |
7625 | ||
7626 | if (vd->vdev_ops == &vdev_indirect_ops) { | |
7627 | ASSERT(vim != NULL); | |
7628 | ASSERT(vib != NULL); | |
7629 | } | |
7630 | ||
27f80e85 BB |
7631 | uint64_t obsolete_sm_object = 0; |
7632 | ASSERT0(vdev_obsolete_sm_object(vd, &obsolete_sm_object)); | |
7633 | if (obsolete_sm_object != 0) { | |
a1d477c2 MA |
7634 | ASSERT(vd->vdev_obsolete_sm != NULL); |
7635 | ASSERT(vd->vdev_removing || | |
7636 | vd->vdev_ops == &vdev_indirect_ops); | |
7637 | ASSERT(vdev_indirect_mapping_num_entries(vim) > 0); | |
7638 | ASSERT(vdev_indirect_mapping_bytes_mapped(vim) > 0); | |
27f80e85 | 7639 | ASSERT3U(obsolete_sm_object, ==, |
a1d477c2 MA |
7640 | space_map_object(vd->vdev_obsolete_sm)); |
7641 | ASSERT3U(vdev_indirect_mapping_bytes_mapped(vim), >=, | |
7642 | space_map_allocated(vd->vdev_obsolete_sm)); | |
7643 | } | |
7644 | ASSERT(vd->vdev_obsolete_segments != NULL); | |
7645 | ||
7646 | /* | |
7647 | * Since frees / remaps to an indirect vdev can only | |
7648 | * happen in syncing context, the obsolete segments | |
7649 | * tree must be empty when we start syncing. | |
7650 | */ | |
7651 | ASSERT0(range_tree_space(vd->vdev_obsolete_segments)); | |
7652 | } | |
7653 | ||
34dc7c2f BB |
7654 | /* |
7655 | * Sync the specified transaction group. New blocks may be dirtied as | |
7656 | * part of the process, so we iterate until it converges. | |
7657 | */ | |
7658 | void | |
7659 | spa_sync(spa_t *spa, uint64_t txg) | |
7660 | { | |
7661 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
7662 | objset_t *mos = spa->spa_meta_objset; | |
428870ff | 7663 | bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK]; |
cc99f275 DB |
7664 | metaslab_class_t *normal = spa_normal_class(spa); |
7665 | metaslab_class_t *special = spa_special_class(spa); | |
7666 | metaslab_class_t *dedup = spa_dedup_class(spa); | |
34dc7c2f BB |
7667 | vdev_t *rvd = spa->spa_root_vdev; |
7668 | vdev_t *vd; | |
34dc7c2f | 7669 | dmu_tx_t *tx; |
b128c09f | 7670 | int error; |
3dfb57a3 DB |
7671 | uint32_t max_queue_depth = zfs_vdev_async_write_max_active * |
7672 | zfs_vdev_queue_depth_pct / 100; | |
34dc7c2f | 7673 | |
572e2857 BB |
7674 | VERIFY(spa_writeable(spa)); |
7675 | ||
a1d477c2 MA |
7676 | /* |
7677 | * Wait for i/os issued in open context that need to complete | |
7678 | * before this txg syncs. | |
7679 | */ | |
7680 | VERIFY0(zio_wait(spa->spa_txg_zio[txg & TXG_MASK])); | |
7681 | spa->spa_txg_zio[txg & TXG_MASK] = zio_root(spa, NULL, NULL, 0); | |
7682 | ||
34dc7c2f BB |
7683 | /* |
7684 | * Lock out configuration changes. | |
7685 | */ | |
b128c09f | 7686 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
7687 | |
7688 | spa->spa_syncing_txg = txg; | |
7689 | spa->spa_sync_pass = 0; | |
7690 | ||
492f64e9 PD |
7691 | for (int i = 0; i < spa->spa_alloc_count; i++) { |
7692 | mutex_enter(&spa->spa_alloc_locks[i]); | |
7693 | VERIFY0(avl_numnodes(&spa->spa_alloc_trees[i])); | |
7694 | mutex_exit(&spa->spa_alloc_locks[i]); | |
7695 | } | |
3dfb57a3 | 7696 | |
b128c09f BB |
7697 | /* |
7698 | * If there are any pending vdev state changes, convert them | |
7699 | * into config changes that go out with this transaction group. | |
7700 | */ | |
7701 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
fb5f0bc8 BB |
7702 | while (list_head(&spa->spa_state_dirty_list) != NULL) { |
7703 | /* | |
7704 | * We need the write lock here because, for aux vdevs, | |
7705 | * calling vdev_config_dirty() modifies sav_config. | |
7706 | * This is ugly and will become unnecessary when we | |
7707 | * eliminate the aux vdev wart by integrating all vdevs | |
7708 | * into the root vdev tree. | |
7709 | */ | |
7710 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7711 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); | |
7712 | while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { | |
7713 | vdev_state_clean(vd); | |
7714 | vdev_config_dirty(vd); | |
7715 | } | |
7716 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
7717 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
b128c09f BB |
7718 | } |
7719 | spa_config_exit(spa, SCL_STATE, FTAG); | |
7720 | ||
34dc7c2f BB |
7721 | tx = dmu_tx_create_assigned(dp, txg); |
7722 | ||
cc92e9d0 | 7723 | spa->spa_sync_starttime = gethrtime(); |
57ddcda1 CC |
7724 | taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid); |
7725 | spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq, | |
79c76d5b | 7726 | spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() + |
cc92e9d0 GW |
7727 | NSEC_TO_TICK(spa->spa_deadman_synctime)); |
7728 | ||
34dc7c2f BB |
7729 | /* |
7730 | * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, | |
7731 | * set spa_deflate if we have no raid-z vdevs. | |
7732 | */ | |
7733 | if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && | |
7734 | spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
7735 | int i; | |
7736 | ||
7737 | for (i = 0; i < rvd->vdev_children; i++) { | |
7738 | vd = rvd->vdev_child[i]; | |
7739 | if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
7740 | break; | |
7741 | } | |
7742 | if (i == rvd->vdev_children) { | |
7743 | spa->spa_deflate = TRUE; | |
7744 | VERIFY(0 == zap_add(spa->spa_meta_objset, | |
7745 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
7746 | sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
7747 | } | |
7748 | } | |
7749 | ||
3dfb57a3 DB |
7750 | /* |
7751 | * Set the top-level vdev's max queue depth. Evaluate each | |
7752 | * top-level's async write queue depth in case it changed. | |
7753 | * The max queue depth will not change in the middle of syncing | |
7754 | * out this txg. | |
7755 | */ | |
492f64e9 | 7756 | uint64_t slots_per_allocator = 0; |
1c27024e | 7757 | for (int c = 0; c < rvd->vdev_children; c++) { |
3dfb57a3 DB |
7758 | vdev_t *tvd = rvd->vdev_child[c]; |
7759 | metaslab_group_t *mg = tvd->vdev_mg; | |
cc99f275 DB |
7760 | metaslab_class_t *mc; |
7761 | ||
7762 | if (mg == NULL || !metaslab_group_initialized(mg)) | |
7763 | continue; | |
3dfb57a3 | 7764 | |
cc99f275 DB |
7765 | mc = mg->mg_class; |
7766 | if (mc != normal && mc != special && mc != dedup) | |
3dfb57a3 DB |
7767 | continue; |
7768 | ||
7769 | /* | |
7770 | * It is safe to do a lock-free check here because only async | |
7771 | * allocations look at mg_max_alloc_queue_depth, and async | |
7772 | * allocations all happen from spa_sync(). | |
7773 | */ | |
492f64e9 | 7774 | for (int i = 0; i < spa->spa_alloc_count; i++) |
424fd7c3 TS |
7775 | ASSERT0(zfs_refcount_count( |
7776 | &(mg->mg_alloc_queue_depth[i]))); | |
3dfb57a3 | 7777 | mg->mg_max_alloc_queue_depth = max_queue_depth; |
492f64e9 PD |
7778 | |
7779 | for (int i = 0; i < spa->spa_alloc_count; i++) { | |
7780 | mg->mg_cur_max_alloc_queue_depth[i] = | |
7781 | zfs_vdev_def_queue_depth; | |
7782 | } | |
7783 | slots_per_allocator += zfs_vdev_def_queue_depth; | |
3dfb57a3 | 7784 | } |
cc99f275 | 7785 | |
492f64e9 | 7786 | for (int i = 0; i < spa->spa_alloc_count; i++) { |
424fd7c3 TS |
7787 | ASSERT0(zfs_refcount_count(&normal->mc_alloc_slots[i])); |
7788 | ASSERT0(zfs_refcount_count(&special->mc_alloc_slots[i])); | |
7789 | ASSERT0(zfs_refcount_count(&dedup->mc_alloc_slots[i])); | |
cc99f275 DB |
7790 | normal->mc_alloc_max_slots[i] = slots_per_allocator; |
7791 | special->mc_alloc_max_slots[i] = slots_per_allocator; | |
7792 | dedup->mc_alloc_max_slots[i] = slots_per_allocator; | |
7793 | } | |
7794 | normal->mc_alloc_throttle_enabled = zio_dva_throttle_enabled; | |
7795 | special->mc_alloc_throttle_enabled = zio_dva_throttle_enabled; | |
7796 | dedup->mc_alloc_throttle_enabled = zio_dva_throttle_enabled; | |
3dfb57a3 | 7797 | |
a1d477c2 MA |
7798 | for (int c = 0; c < rvd->vdev_children; c++) { |
7799 | vdev_t *vd = rvd->vdev_child[c]; | |
7800 | vdev_indirect_state_sync_verify(vd); | |
7801 | ||
7802 | if (vdev_indirect_should_condense(vd)) { | |
7803 | spa_condense_indirect_start_sync(vd, tx); | |
7804 | break; | |
7805 | } | |
7806 | } | |
7807 | ||
34dc7c2f BB |
7808 | /* |
7809 | * Iterate to convergence. | |
7810 | */ | |
7811 | do { | |
428870ff | 7812 | int pass = ++spa->spa_sync_pass; |
34dc7c2f BB |
7813 | |
7814 | spa_sync_config_object(spa, tx); | |
7815 | spa_sync_aux_dev(spa, &spa->spa_spares, tx, | |
7816 | ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
7817 | spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
7818 | ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
7819 | spa_errlog_sync(spa, txg); | |
7820 | dsl_pool_sync(dp, txg); | |
7821 | ||
55d85d5a | 7822 | if (pass < zfs_sync_pass_deferred_free) { |
e8b96c60 | 7823 | spa_sync_frees(spa, free_bpl, tx); |
428870ff | 7824 | } else { |
905edb40 MA |
7825 | /* |
7826 | * We can not defer frees in pass 1, because | |
7827 | * we sync the deferred frees later in pass 1. | |
7828 | */ | |
7829 | ASSERT3U(pass, >, 1); | |
428870ff | 7830 | bplist_iterate(free_bpl, bpobj_enqueue_cb, |
e8b96c60 | 7831 | &spa->spa_deferred_bpobj, tx); |
34dc7c2f BB |
7832 | } |
7833 | ||
428870ff BB |
7834 | ddt_sync(spa, txg); |
7835 | dsl_scan_sync(dp, tx); | |
34dc7c2f | 7836 | |
a1d477c2 MA |
7837 | if (spa->spa_vdev_removal != NULL) |
7838 | svr_sync(spa, tx); | |
7839 | ||
7840 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) | |
7841 | != NULL) | |
428870ff BB |
7842 | vdev_sync(vd, txg); |
7843 | ||
905edb40 | 7844 | if (pass == 1) { |
428870ff | 7845 | spa_sync_upgrades(spa, tx); |
905edb40 MA |
7846 | ASSERT3U(txg, >=, |
7847 | spa->spa_uberblock.ub_rootbp.blk_birth); | |
7848 | /* | |
7849 | * Note: We need to check if the MOS is dirty | |
7850 | * because we could have marked the MOS dirty | |
7851 | * without updating the uberblock (e.g. if we | |
7852 | * have sync tasks but no dirty user data). We | |
7853 | * need to check the uberblock's rootbp because | |
7854 | * it is updated if we have synced out dirty | |
7855 | * data (though in this case the MOS will most | |
7856 | * likely also be dirty due to second order | |
7857 | * effects, we don't want to rely on that here). | |
7858 | */ | |
7859 | if (spa->spa_uberblock.ub_rootbp.blk_birth < txg && | |
7860 | !dmu_objset_is_dirty(mos, txg)) { | |
7861 | /* | |
7862 | * Nothing changed on the first pass, | |
7863 | * therefore this TXG is a no-op. Avoid | |
7864 | * syncing deferred frees, so that we | |
7865 | * can keep this TXG as a no-op. | |
7866 | */ | |
7867 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, | |
7868 | txg)); | |
7869 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
7870 | ASSERT(txg_list_empty(&dp->dp_sync_tasks, txg)); | |
d2734cce SD |
7871 | ASSERT(txg_list_empty(&dp->dp_early_sync_tasks, |
7872 | txg)); | |
905edb40 MA |
7873 | break; |
7874 | } | |
7875 | spa_sync_deferred_frees(spa, tx); | |
7876 | } | |
34dc7c2f | 7877 | |
428870ff | 7878 | } while (dmu_objset_is_dirty(mos, txg)); |
34dc7c2f | 7879 | |
33cf67cd | 7880 | #ifdef ZFS_DEBUG |
e0ab3ab5 JS |
7881 | if (!list_is_empty(&spa->spa_config_dirty_list)) { |
7882 | /* | |
7883 | * Make sure that the number of ZAPs for all the vdevs matches | |
7884 | * the number of ZAPs in the per-vdev ZAP list. This only gets | |
7885 | * called if the config is dirty; otherwise there may be | |
7886 | * outstanding AVZ operations that weren't completed in | |
7887 | * spa_sync_config_object. | |
7888 | */ | |
7889 | uint64_t all_vdev_zap_entry_count; | |
7890 | ASSERT0(zap_count(spa->spa_meta_objset, | |
7891 | spa->spa_all_vdev_zaps, &all_vdev_zap_entry_count)); | |
7892 | ASSERT3U(vdev_count_verify_zaps(spa->spa_root_vdev), ==, | |
7893 | all_vdev_zap_entry_count); | |
7894 | } | |
33cf67cd | 7895 | #endif |
e0ab3ab5 | 7896 | |
a1d477c2 MA |
7897 | if (spa->spa_vdev_removal != NULL) { |
7898 | ASSERT0(spa->spa_vdev_removal->svr_bytes_done[txg & TXG_MASK]); | |
7899 | } | |
7900 | ||
34dc7c2f BB |
7901 | /* |
7902 | * Rewrite the vdev configuration (which includes the uberblock) | |
7903 | * to commit the transaction group. | |
7904 | * | |
7905 | * If there are no dirty vdevs, we sync the uberblock to a few | |
7906 | * random top-level vdevs that are known to be visible in the | |
b128c09f BB |
7907 | * config cache (see spa_vdev_add() for a complete description). |
7908 | * If there *are* dirty vdevs, sync the uberblock to all vdevs. | |
34dc7c2f | 7909 | */ |
b128c09f BB |
7910 | for (;;) { |
7911 | /* | |
7912 | * We hold SCL_STATE to prevent vdev open/close/etc. | |
7913 | * while we're attempting to write the vdev labels. | |
7914 | */ | |
7915 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
7916 | ||
7917 | if (list_is_empty(&spa->spa_config_dirty_list)) { | |
d2734cce | 7918 | vdev_t *svd[SPA_SYNC_MIN_VDEVS] = { NULL }; |
b128c09f BB |
7919 | int svdcount = 0; |
7920 | int children = rvd->vdev_children; | |
7921 | int c0 = spa_get_random(children); | |
b128c09f | 7922 | |
1c27024e | 7923 | for (int c = 0; c < children; c++) { |
b128c09f | 7924 | vd = rvd->vdev_child[(c0 + c) % children]; |
d2734cce SD |
7925 | |
7926 | /* Stop when revisiting the first vdev */ | |
7927 | if (c > 0 && svd[0] == vd) | |
7928 | break; | |
7929 | ||
a1d477c2 MA |
7930 | if (vd->vdev_ms_array == 0 || vd->vdev_islog || |
7931 | !vdev_is_concrete(vd)) | |
b128c09f | 7932 | continue; |
d2734cce | 7933 | |
b128c09f | 7934 | svd[svdcount++] = vd; |
6cb8e530 | 7935 | if (svdcount == SPA_SYNC_MIN_VDEVS) |
b128c09f BB |
7936 | break; |
7937 | } | |
b6fcb792 | 7938 | error = vdev_config_sync(svd, svdcount, txg); |
b128c09f BB |
7939 | } else { |
7940 | error = vdev_config_sync(rvd->vdev_child, | |
b6fcb792 | 7941 | rvd->vdev_children, txg); |
34dc7c2f | 7942 | } |
34dc7c2f | 7943 | |
3bc7e0fb GW |
7944 | if (error == 0) |
7945 | spa->spa_last_synced_guid = rvd->vdev_guid; | |
7946 | ||
b128c09f BB |
7947 | spa_config_exit(spa, SCL_STATE, FTAG); |
7948 | ||
7949 | if (error == 0) | |
7950 | break; | |
cec3a0a1 | 7951 | zio_suspend(spa, NULL, ZIO_SUSPEND_IOERR); |
b128c09f BB |
7952 | zio_resume_wait(spa); |
7953 | } | |
34dc7c2f BB |
7954 | dmu_tx_commit(tx); |
7955 | ||
57ddcda1 | 7956 | taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid); |
cc92e9d0 GW |
7957 | spa->spa_deadman_tqid = 0; |
7958 | ||
34dc7c2f BB |
7959 | /* |
7960 | * Clear the dirty config list. | |
7961 | */ | |
b128c09f | 7962 | while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) |
34dc7c2f BB |
7963 | vdev_config_clean(vd); |
7964 | ||
7965 | /* | |
7966 | * Now that the new config has synced transactionally, | |
7967 | * let it become visible to the config cache. | |
7968 | */ | |
7969 | if (spa->spa_config_syncing != NULL) { | |
7970 | spa_config_set(spa, spa->spa_config_syncing); | |
7971 | spa->spa_config_txg = txg; | |
7972 | spa->spa_config_syncing = NULL; | |
7973 | } | |
7974 | ||
428870ff | 7975 | dsl_pool_sync_done(dp, txg); |
34dc7c2f | 7976 | |
492f64e9 PD |
7977 | for (int i = 0; i < spa->spa_alloc_count; i++) { |
7978 | mutex_enter(&spa->spa_alloc_locks[i]); | |
7979 | VERIFY0(avl_numnodes(&spa->spa_alloc_trees[i])); | |
7980 | mutex_exit(&spa->spa_alloc_locks[i]); | |
7981 | } | |
3dfb57a3 | 7982 | |
34dc7c2f BB |
7983 | /* |
7984 | * Update usable space statistics. | |
7985 | */ | |
c65aa5b2 | 7986 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)))) |
34dc7c2f BB |
7987 | vdev_sync_done(vd, txg); |
7988 | ||
428870ff BB |
7989 | spa_update_dspace(spa); |
7990 | ||
34dc7c2f BB |
7991 | /* |
7992 | * It had better be the case that we didn't dirty anything | |
7993 | * since vdev_config_sync(). | |
7994 | */ | |
7995 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
7996 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
7997 | ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
428870ff | 7998 | |
d2734cce SD |
7999 | while (zfs_pause_spa_sync) |
8000 | delay(1); | |
8001 | ||
428870ff | 8002 | spa->spa_sync_pass = 0; |
34dc7c2f | 8003 | |
55922e73 GW |
8004 | /* |
8005 | * Update the last synced uberblock here. We want to do this at | |
8006 | * the end of spa_sync() so that consumers of spa_last_synced_txg() | |
8007 | * will be guaranteed that all the processing associated with | |
8008 | * that txg has been completed. | |
8009 | */ | |
8010 | spa->spa_ubsync = spa->spa_uberblock; | |
b128c09f | 8011 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f | 8012 | |
428870ff BB |
8013 | spa_handle_ignored_writes(spa); |
8014 | ||
34dc7c2f BB |
8015 | /* |
8016 | * If any async tasks have been requested, kick them off. | |
8017 | */ | |
8018 | spa_async_dispatch(spa); | |
8019 | } | |
8020 | ||
8021 | /* | |
8022 | * Sync all pools. We don't want to hold the namespace lock across these | |
8023 | * operations, so we take a reference on the spa_t and drop the lock during the | |
8024 | * sync. | |
8025 | */ | |
8026 | void | |
8027 | spa_sync_allpools(void) | |
8028 | { | |
8029 | spa_t *spa = NULL; | |
8030 | mutex_enter(&spa_namespace_lock); | |
8031 | while ((spa = spa_next(spa)) != NULL) { | |
572e2857 BB |
8032 | if (spa_state(spa) != POOL_STATE_ACTIVE || |
8033 | !spa_writeable(spa) || spa_suspended(spa)) | |
34dc7c2f BB |
8034 | continue; |
8035 | spa_open_ref(spa, FTAG); | |
8036 | mutex_exit(&spa_namespace_lock); | |
8037 | txg_wait_synced(spa_get_dsl(spa), 0); | |
8038 | mutex_enter(&spa_namespace_lock); | |
8039 | spa_close(spa, FTAG); | |
8040 | } | |
8041 | mutex_exit(&spa_namespace_lock); | |
8042 | } | |
8043 | ||
8044 | /* | |
8045 | * ========================================================================== | |
8046 | * Miscellaneous routines | |
8047 | * ========================================================================== | |
8048 | */ | |
8049 | ||
8050 | /* | |
8051 | * Remove all pools in the system. | |
8052 | */ | |
8053 | void | |
8054 | spa_evict_all(void) | |
8055 | { | |
8056 | spa_t *spa; | |
8057 | ||
8058 | /* | |
8059 | * Remove all cached state. All pools should be closed now, | |
8060 | * so every spa in the AVL tree should be unreferenced. | |
8061 | */ | |
8062 | mutex_enter(&spa_namespace_lock); | |
8063 | while ((spa = spa_next(NULL)) != NULL) { | |
8064 | /* | |
8065 | * Stop async tasks. The async thread may need to detach | |
8066 | * a device that's been replaced, which requires grabbing | |
8067 | * spa_namespace_lock, so we must drop it here. | |
8068 | */ | |
8069 | spa_open_ref(spa, FTAG); | |
8070 | mutex_exit(&spa_namespace_lock); | |
8071 | spa_async_suspend(spa); | |
8072 | mutex_enter(&spa_namespace_lock); | |
34dc7c2f BB |
8073 | spa_close(spa, FTAG); |
8074 | ||
8075 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
8076 | spa_unload(spa); | |
8077 | spa_deactivate(spa); | |
8078 | } | |
8079 | spa_remove(spa); | |
8080 | } | |
8081 | mutex_exit(&spa_namespace_lock); | |
8082 | } | |
8083 | ||
8084 | vdev_t * | |
9babb374 | 8085 | spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux) |
34dc7c2f | 8086 | { |
b128c09f BB |
8087 | vdev_t *vd; |
8088 | int i; | |
8089 | ||
8090 | if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) | |
8091 | return (vd); | |
8092 | ||
9babb374 | 8093 | if (aux) { |
b128c09f BB |
8094 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
8095 | vd = spa->spa_l2cache.sav_vdevs[i]; | |
9babb374 BB |
8096 | if (vd->vdev_guid == guid) |
8097 | return (vd); | |
8098 | } | |
8099 | ||
8100 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
8101 | vd = spa->spa_spares.sav_vdevs[i]; | |
b128c09f BB |
8102 | if (vd->vdev_guid == guid) |
8103 | return (vd); | |
8104 | } | |
8105 | } | |
8106 | ||
8107 | return (NULL); | |
34dc7c2f BB |
8108 | } |
8109 | ||
8110 | void | |
8111 | spa_upgrade(spa_t *spa, uint64_t version) | |
8112 | { | |
572e2857 BB |
8113 | ASSERT(spa_writeable(spa)); |
8114 | ||
b128c09f | 8115 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
8116 | |
8117 | /* | |
8118 | * This should only be called for a non-faulted pool, and since a | |
8119 | * future version would result in an unopenable pool, this shouldn't be | |
8120 | * possible. | |
8121 | */ | |
8dca0a9a | 8122 | ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version)); |
9b67f605 | 8123 | ASSERT3U(version, >=, spa->spa_uberblock.ub_version); |
34dc7c2f BB |
8124 | |
8125 | spa->spa_uberblock.ub_version = version; | |
8126 | vdev_config_dirty(spa->spa_root_vdev); | |
8127 | ||
b128c09f | 8128 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
8129 | |
8130 | txg_wait_synced(spa_get_dsl(spa), 0); | |
8131 | } | |
8132 | ||
8133 | boolean_t | |
8134 | spa_has_spare(spa_t *spa, uint64_t guid) | |
8135 | { | |
8136 | int i; | |
8137 | uint64_t spareguid; | |
8138 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
8139 | ||
8140 | for (i = 0; i < sav->sav_count; i++) | |
8141 | if (sav->sav_vdevs[i]->vdev_guid == guid) | |
8142 | return (B_TRUE); | |
8143 | ||
8144 | for (i = 0; i < sav->sav_npending; i++) { | |
8145 | if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
8146 | &spareguid) == 0 && spareguid == guid) | |
8147 | return (B_TRUE); | |
8148 | } | |
8149 | ||
8150 | return (B_FALSE); | |
8151 | } | |
8152 | ||
b128c09f BB |
8153 | /* |
8154 | * Check if a pool has an active shared spare device. | |
8155 | * Note: reference count of an active spare is 2, as a spare and as a replace | |
8156 | */ | |
8157 | static boolean_t | |
8158 | spa_has_active_shared_spare(spa_t *spa) | |
8159 | { | |
8160 | int i, refcnt; | |
8161 | uint64_t pool; | |
8162 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
8163 | ||
8164 | for (i = 0; i < sav->sav_count; i++) { | |
8165 | if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, | |
8166 | &refcnt) && pool != 0ULL && pool == spa_guid(spa) && | |
8167 | refcnt > 2) | |
8168 | return (B_TRUE); | |
8169 | } | |
8170 | ||
8171 | return (B_FALSE); | |
8172 | } | |
8173 | ||
a1d477c2 | 8174 | sysevent_t * |
12fa0466 DE |
8175 | spa_event_create(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, const char *name) |
8176 | { | |
8177 | sysevent_t *ev = NULL; | |
8178 | #ifdef _KERNEL | |
8179 | nvlist_t *resource; | |
8180 | ||
8181 | resource = zfs_event_create(spa, vd, FM_SYSEVENT_CLASS, name, hist_nvl); | |
8182 | if (resource) { | |
8183 | ev = kmem_alloc(sizeof (sysevent_t), KM_SLEEP); | |
8184 | ev->resource = resource; | |
8185 | } | |
8186 | #endif | |
8187 | return (ev); | |
8188 | } | |
8189 | ||
a1d477c2 | 8190 | void |
12fa0466 DE |
8191 | spa_event_post(sysevent_t *ev) |
8192 | { | |
8193 | #ifdef _KERNEL | |
8194 | if (ev) { | |
8195 | zfs_zevent_post(ev->resource, NULL, zfs_zevent_post_cb); | |
8196 | kmem_free(ev, sizeof (*ev)); | |
8197 | } | |
8198 | #endif | |
8199 | } | |
8200 | ||
34dc7c2f | 8201 | /* |
fb390aaf HR |
8202 | * Post a zevent corresponding to the given sysevent. The 'name' must be one |
8203 | * of the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
34dc7c2f BB |
8204 | * filled in from the spa and (optionally) the vdev. This doesn't do anything |
8205 | * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
8206 | * or zdb as real changes. | |
8207 | */ | |
8208 | void | |
12fa0466 | 8209 | spa_event_notify(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, const char *name) |
34dc7c2f | 8210 | { |
12fa0466 | 8211 | spa_event_post(spa_event_create(spa, vd, hist_nvl, name)); |
34dc7c2f | 8212 | } |
c28b2279 | 8213 | |
93ce2b4c | 8214 | #if defined(_KERNEL) |
c28b2279 BB |
8215 | /* state manipulation functions */ |
8216 | EXPORT_SYMBOL(spa_open); | |
8217 | EXPORT_SYMBOL(spa_open_rewind); | |
8218 | EXPORT_SYMBOL(spa_get_stats); | |
8219 | EXPORT_SYMBOL(spa_create); | |
c28b2279 BB |
8220 | EXPORT_SYMBOL(spa_import); |
8221 | EXPORT_SYMBOL(spa_tryimport); | |
8222 | EXPORT_SYMBOL(spa_destroy); | |
8223 | EXPORT_SYMBOL(spa_export); | |
8224 | EXPORT_SYMBOL(spa_reset); | |
8225 | EXPORT_SYMBOL(spa_async_request); | |
8226 | EXPORT_SYMBOL(spa_async_suspend); | |
8227 | EXPORT_SYMBOL(spa_async_resume); | |
8228 | EXPORT_SYMBOL(spa_inject_addref); | |
8229 | EXPORT_SYMBOL(spa_inject_delref); | |
8230 | EXPORT_SYMBOL(spa_scan_stat_init); | |
8231 | EXPORT_SYMBOL(spa_scan_get_stats); | |
8232 | ||
8233 | /* device maniion */ | |
8234 | EXPORT_SYMBOL(spa_vdev_add); | |
8235 | EXPORT_SYMBOL(spa_vdev_attach); | |
8236 | EXPORT_SYMBOL(spa_vdev_detach); | |
c28b2279 BB |
8237 | EXPORT_SYMBOL(spa_vdev_setpath); |
8238 | EXPORT_SYMBOL(spa_vdev_setfru); | |
8239 | EXPORT_SYMBOL(spa_vdev_split_mirror); | |
8240 | ||
8241 | /* spare statech is global across all pools) */ | |
8242 | EXPORT_SYMBOL(spa_spare_add); | |
8243 | EXPORT_SYMBOL(spa_spare_remove); | |
8244 | EXPORT_SYMBOL(spa_spare_exists); | |
8245 | EXPORT_SYMBOL(spa_spare_activate); | |
8246 | ||
8247 | /* L2ARC statech is global across all pools) */ | |
8248 | EXPORT_SYMBOL(spa_l2cache_add); | |
8249 | EXPORT_SYMBOL(spa_l2cache_remove); | |
8250 | EXPORT_SYMBOL(spa_l2cache_exists); | |
8251 | EXPORT_SYMBOL(spa_l2cache_activate); | |
8252 | EXPORT_SYMBOL(spa_l2cache_drop); | |
8253 | ||
8254 | /* scanning */ | |
8255 | EXPORT_SYMBOL(spa_scan); | |
8256 | EXPORT_SYMBOL(spa_scan_stop); | |
8257 | ||
8258 | /* spa syncing */ | |
8259 | EXPORT_SYMBOL(spa_sync); /* only for DMU use */ | |
8260 | EXPORT_SYMBOL(spa_sync_allpools); | |
8261 | ||
8262 | /* properties */ | |
8263 | EXPORT_SYMBOL(spa_prop_set); | |
8264 | EXPORT_SYMBOL(spa_prop_get); | |
8265 | EXPORT_SYMBOL(spa_prop_clear_bootfs); | |
8266 | ||
8267 | /* asynchronous event notification */ | |
8268 | EXPORT_SYMBOL(spa_event_notify); | |
8269 | #endif | |
dea377c0 | 8270 | |
93ce2b4c | 8271 | #if defined(_KERNEL) |
dea377c0 MA |
8272 | module_param(spa_load_verify_maxinflight, int, 0644); |
8273 | MODULE_PARM_DESC(spa_load_verify_maxinflight, | |
8274 | "Max concurrent traversal I/Os while verifying pool during import -X"); | |
8275 | ||
8276 | module_param(spa_load_verify_metadata, int, 0644); | |
8277 | MODULE_PARM_DESC(spa_load_verify_metadata, | |
8278 | "Set to traverse metadata on pool import"); | |
8279 | ||
8280 | module_param(spa_load_verify_data, int, 0644); | |
8281 | MODULE_PARM_DESC(spa_load_verify_data, | |
8282 | "Set to traverse data on pool import"); | |
dcb6bed1 | 8283 | |
6cb8e530 PZ |
8284 | module_param(spa_load_print_vdev_tree, int, 0644); |
8285 | MODULE_PARM_DESC(spa_load_print_vdev_tree, | |
8286 | "Print vdev tree to zfs_dbgmsg during pool import"); | |
8287 | ||
02730c33 | 8288 | /* CSTYLED */ |
dcb6bed1 D |
8289 | module_param(zio_taskq_batch_pct, uint, 0444); |
8290 | MODULE_PARM_DESC(zio_taskq_batch_pct, | |
8291 | "Percentage of CPUs to run an IO worker thread"); | |
8292 | ||
6cb8e530 PZ |
8293 | /* BEGIN CSTYLED */ |
8294 | module_param(zfs_max_missing_tvds, ulong, 0644); | |
8295 | MODULE_PARM_DESC(zfs_max_missing_tvds, | |
8296 | "Allow importing pool with up to this number of missing top-level vdevs" | |
8297 | " (in read-only mode)"); | |
8298 | /* END CSTYLED */ | |
8299 | ||
dea377c0 | 8300 | #endif |