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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. |
2e528b49 | 24 | * Copyright (c) 2013 by Delphix. All rights reserved. |
62bdd5eb | 25 | * Copyright (c) 2013, 2014, Nexenta Systems, Inc. All rights reserved. |
0c66c32d | 26 | * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
a38718a6 | 27 | */ |
34dc7c2f | 28 | |
34dc7c2f | 29 | /* |
e49f1e20 WA |
30 | * SPA: Storage Pool Allocator |
31 | * | |
34dc7c2f BB |
32 | * This file contains all the routines used when modifying on-disk SPA state. |
33 | * This includes opening, importing, destroying, exporting a pool, and syncing a | |
34 | * pool. | |
35 | */ | |
36 | ||
37 | #include <sys/zfs_context.h> | |
38 | #include <sys/fm/fs/zfs.h> | |
39 | #include <sys/spa_impl.h> | |
40 | #include <sys/zio.h> | |
41 | #include <sys/zio_checksum.h> | |
34dc7c2f BB |
42 | #include <sys/dmu.h> |
43 | #include <sys/dmu_tx.h> | |
44 | #include <sys/zap.h> | |
45 | #include <sys/zil.h> | |
428870ff | 46 | #include <sys/ddt.h> |
34dc7c2f | 47 | #include <sys/vdev_impl.h> |
c28b2279 | 48 | #include <sys/vdev_disk.h> |
34dc7c2f | 49 | #include <sys/metaslab.h> |
428870ff | 50 | #include <sys/metaslab_impl.h> |
34dc7c2f BB |
51 | #include <sys/uberblock_impl.h> |
52 | #include <sys/txg.h> | |
53 | #include <sys/avl.h> | |
54 | #include <sys/dmu_traverse.h> | |
55 | #include <sys/dmu_objset.h> | |
56 | #include <sys/unique.h> | |
57 | #include <sys/dsl_pool.h> | |
58 | #include <sys/dsl_dataset.h> | |
59 | #include <sys/dsl_dir.h> | |
60 | #include <sys/dsl_prop.h> | |
61 | #include <sys/dsl_synctask.h> | |
62 | #include <sys/fs/zfs.h> | |
63 | #include <sys/arc.h> | |
64 | #include <sys/callb.h> | |
65 | #include <sys/systeminfo.h> | |
34dc7c2f | 66 | #include <sys/spa_boot.h> |
9babb374 | 67 | #include <sys/zfs_ioctl.h> |
428870ff | 68 | #include <sys/dsl_scan.h> |
9ae529ec | 69 | #include <sys/zfeature.h> |
13fe0198 | 70 | #include <sys/dsl_destroy.h> |
526af785 | 71 | #include <sys/zvol.h> |
34dc7c2f | 72 | |
d164b209 | 73 | #ifdef _KERNEL |
428870ff BB |
74 | #include <sys/bootprops.h> |
75 | #include <sys/callb.h> | |
76 | #include <sys/cpupart.h> | |
77 | #include <sys/pool.h> | |
78 | #include <sys/sysdc.h> | |
d164b209 BB |
79 | #include <sys/zone.h> |
80 | #endif /* _KERNEL */ | |
81 | ||
34dc7c2f BB |
82 | #include "zfs_prop.h" |
83 | #include "zfs_comutil.h" | |
84 | ||
428870ff | 85 | typedef enum zti_modes { |
7ef5e54e | 86 | ZTI_MODE_FIXED, /* value is # of threads (min 1) */ |
7ef5e54e AL |
87 | ZTI_MODE_BATCH, /* cpu-intensive; value is ignored */ |
88 | ZTI_MODE_NULL, /* don't create a taskq */ | |
89 | ZTI_NMODES | |
428870ff | 90 | } zti_modes_t; |
34dc7c2f | 91 | |
7ef5e54e AL |
92 | #define ZTI_P(n, q) { ZTI_MODE_FIXED, (n), (q) } |
93 | #define ZTI_PCT(n) { ZTI_MODE_ONLINE_PERCENT, (n), 1 } | |
94 | #define ZTI_BATCH { ZTI_MODE_BATCH, 0, 1 } | |
95 | #define ZTI_NULL { ZTI_MODE_NULL, 0, 0 } | |
9babb374 | 96 | |
7ef5e54e AL |
97 | #define ZTI_N(n) ZTI_P(n, 1) |
98 | #define ZTI_ONE ZTI_N(1) | |
9babb374 BB |
99 | |
100 | typedef struct zio_taskq_info { | |
7ef5e54e | 101 | zti_modes_t zti_mode; |
428870ff | 102 | uint_t zti_value; |
7ef5e54e | 103 | uint_t zti_count; |
9babb374 BB |
104 | } zio_taskq_info_t; |
105 | ||
106 | static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = { | |
451041db | 107 | "iss", "iss_h", "int", "int_h" |
9babb374 BB |
108 | }; |
109 | ||
428870ff | 110 | /* |
7ef5e54e AL |
111 | * This table defines the taskq settings for each ZFS I/O type. When |
112 | * initializing a pool, we use this table to create an appropriately sized | |
113 | * taskq. Some operations are low volume and therefore have a small, static | |
114 | * number of threads assigned to their taskqs using the ZTI_N(#) or ZTI_ONE | |
115 | * macros. Other operations process a large amount of data; the ZTI_BATCH | |
116 | * macro causes us to create a taskq oriented for throughput. Some operations | |
117 | * are so high frequency and short-lived that the taskq itself can become a a | |
118 | * point of lock contention. The ZTI_P(#, #) macro indicates that we need an | |
119 | * additional degree of parallelism specified by the number of threads per- | |
120 | * taskq and the number of taskqs; when dispatching an event in this case, the | |
121 | * particular taskq is chosen at random. | |
122 | * | |
123 | * The different taskq priorities are to handle the different contexts (issue | |
124 | * and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that | |
125 | * need to be handled with minimum delay. | |
428870ff BB |
126 | */ |
127 | const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = { | |
128 | /* ISSUE ISSUE_HIGH INTR INTR_HIGH */ | |
7ef5e54e AL |
129 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */ |
130 | { ZTI_N(8), ZTI_NULL, ZTI_BATCH, ZTI_NULL }, /* READ */ | |
131 | { ZTI_BATCH, ZTI_N(5), ZTI_N(16), ZTI_N(5) }, /* WRITE */ | |
132 | { ZTI_P(4, 8), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* FREE */ | |
133 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* CLAIM */ | |
134 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* IOCTL */ | |
9babb374 BB |
135 | }; |
136 | ||
13fe0198 MA |
137 | static void spa_sync_version(void *arg, dmu_tx_t *tx); |
138 | static void spa_sync_props(void *arg, dmu_tx_t *tx); | |
b128c09f | 139 | static boolean_t spa_has_active_shared_spare(spa_t *spa); |
bf701a83 | 140 | static inline int spa_load_impl(spa_t *spa, uint64_t, nvlist_t *config, |
428870ff BB |
141 | spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, |
142 | char **ereport); | |
572e2857 | 143 | static void spa_vdev_resilver_done(spa_t *spa); |
428870ff | 144 | |
e8b96c60 | 145 | uint_t zio_taskq_batch_pct = 75; /* 1 thread per cpu in pset */ |
428870ff BB |
146 | id_t zio_taskq_psrset_bind = PS_NONE; |
147 | boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */ | |
148 | uint_t zio_taskq_basedc = 80; /* base duty cycle */ | |
149 | ||
150 | boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ | |
151 | ||
152 | /* | |
153 | * This (illegal) pool name is used when temporarily importing a spa_t in order | |
154 | * to get the vdev stats associated with the imported devices. | |
155 | */ | |
156 | #define TRYIMPORT_NAME "$import" | |
34dc7c2f BB |
157 | |
158 | /* | |
159 | * ========================================================================== | |
160 | * SPA properties routines | |
161 | * ========================================================================== | |
162 | */ | |
163 | ||
164 | /* | |
165 | * Add a (source=src, propname=propval) list to an nvlist. | |
166 | */ | |
167 | static void | |
168 | spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, | |
169 | uint64_t intval, zprop_source_t src) | |
170 | { | |
171 | const char *propname = zpool_prop_to_name(prop); | |
172 | nvlist_t *propval; | |
173 | ||
79c76d5b | 174 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
175 | VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); |
176 | ||
177 | if (strval != NULL) | |
178 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); | |
179 | else | |
180 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); | |
181 | ||
182 | VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); | |
183 | nvlist_free(propval); | |
184 | } | |
185 | ||
186 | /* | |
187 | * Get property values from the spa configuration. | |
188 | */ | |
189 | static void | |
190 | spa_prop_get_config(spa_t *spa, nvlist_t **nvp) | |
191 | { | |
1bd201e7 | 192 | vdev_t *rvd = spa->spa_root_vdev; |
9ae529ec | 193 | dsl_pool_t *pool = spa->spa_dsl_pool; |
f3a7f661 | 194 | uint64_t size, alloc, cap, version; |
34dc7c2f | 195 | zprop_source_t src = ZPROP_SRC_NONE; |
b128c09f | 196 | spa_config_dirent_t *dp; |
f3a7f661 | 197 | metaslab_class_t *mc = spa_normal_class(spa); |
b128c09f BB |
198 | |
199 | ASSERT(MUTEX_HELD(&spa->spa_props_lock)); | |
34dc7c2f | 200 | |
1bd201e7 | 201 | if (rvd != NULL) { |
428870ff BB |
202 | alloc = metaslab_class_get_alloc(spa_normal_class(spa)); |
203 | size = metaslab_class_get_space(spa_normal_class(spa)); | |
d164b209 BB |
204 | spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); |
205 | spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); | |
428870ff BB |
206 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src); |
207 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL, | |
208 | size - alloc, src); | |
1bd201e7 | 209 | |
f3a7f661 GW |
210 | spa_prop_add_list(*nvp, ZPOOL_PROP_FRAGMENTATION, NULL, |
211 | metaslab_class_fragmentation(mc), src); | |
212 | spa_prop_add_list(*nvp, ZPOOL_PROP_EXPANDSZ, NULL, | |
213 | metaslab_class_expandable_space(mc), src); | |
572e2857 BB |
214 | spa_prop_add_list(*nvp, ZPOOL_PROP_READONLY, NULL, |
215 | (spa_mode(spa) == FREAD), src); | |
d164b209 | 216 | |
428870ff | 217 | cap = (size == 0) ? 0 : (alloc * 100 / size); |
d164b209 BB |
218 | spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); |
219 | ||
428870ff BB |
220 | spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL, |
221 | ddt_get_pool_dedup_ratio(spa), src); | |
222 | ||
d164b209 | 223 | spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, |
1bd201e7 | 224 | rvd->vdev_state, src); |
d164b209 BB |
225 | |
226 | version = spa_version(spa); | |
227 | if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) | |
228 | src = ZPROP_SRC_DEFAULT; | |
229 | else | |
230 | src = ZPROP_SRC_LOCAL; | |
231 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, version, src); | |
232 | } | |
34dc7c2f | 233 | |
9ae529ec | 234 | if (pool != NULL) { |
9ae529ec CS |
235 | /* |
236 | * The $FREE directory was introduced in SPA_VERSION_DEADLISTS, | |
237 | * when opening pools before this version freedir will be NULL. | |
238 | */ | |
fbeddd60 | 239 | if (pool->dp_free_dir != NULL) { |
9ae529ec | 240 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, NULL, |
d683ddbb JG |
241 | dsl_dir_phys(pool->dp_free_dir)->dd_used_bytes, |
242 | src); | |
9ae529ec CS |
243 | } else { |
244 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, | |
245 | NULL, 0, src); | |
246 | } | |
fbeddd60 MA |
247 | |
248 | if (pool->dp_leak_dir != NULL) { | |
249 | spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, NULL, | |
d683ddbb JG |
250 | dsl_dir_phys(pool->dp_leak_dir)->dd_used_bytes, |
251 | src); | |
fbeddd60 MA |
252 | } else { |
253 | spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, | |
254 | NULL, 0, src); | |
255 | } | |
9ae529ec CS |
256 | } |
257 | ||
34dc7c2f | 258 | spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); |
34dc7c2f | 259 | |
d96eb2b1 DM |
260 | if (spa->spa_comment != NULL) { |
261 | spa_prop_add_list(*nvp, ZPOOL_PROP_COMMENT, spa->spa_comment, | |
262 | 0, ZPROP_SRC_LOCAL); | |
263 | } | |
264 | ||
34dc7c2f BB |
265 | if (spa->spa_root != NULL) |
266 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, | |
267 | 0, ZPROP_SRC_LOCAL); | |
268 | ||
b128c09f BB |
269 | if ((dp = list_head(&spa->spa_config_list)) != NULL) { |
270 | if (dp->scd_path == NULL) { | |
34dc7c2f | 271 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f BB |
272 | "none", 0, ZPROP_SRC_LOCAL); |
273 | } else if (strcmp(dp->scd_path, spa_config_path) != 0) { | |
34dc7c2f | 274 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f | 275 | dp->scd_path, 0, ZPROP_SRC_LOCAL); |
34dc7c2f BB |
276 | } |
277 | } | |
278 | } | |
279 | ||
280 | /* | |
281 | * Get zpool property values. | |
282 | */ | |
283 | int | |
284 | spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
285 | { | |
428870ff | 286 | objset_t *mos = spa->spa_meta_objset; |
34dc7c2f BB |
287 | zap_cursor_t zc; |
288 | zap_attribute_t za; | |
34dc7c2f BB |
289 | int err; |
290 | ||
79c76d5b | 291 | err = nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP); |
c28b2279 | 292 | if (err) |
d1d7e268 | 293 | return (err); |
34dc7c2f | 294 | |
b128c09f BB |
295 | mutex_enter(&spa->spa_props_lock); |
296 | ||
34dc7c2f BB |
297 | /* |
298 | * Get properties from the spa config. | |
299 | */ | |
300 | spa_prop_get_config(spa, nvp); | |
301 | ||
34dc7c2f | 302 | /* If no pool property object, no more prop to get. */ |
428870ff | 303 | if (mos == NULL || spa->spa_pool_props_object == 0) { |
34dc7c2f | 304 | mutex_exit(&spa->spa_props_lock); |
c28b2279 | 305 | goto out; |
34dc7c2f BB |
306 | } |
307 | ||
308 | /* | |
309 | * Get properties from the MOS pool property object. | |
310 | */ | |
311 | for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
312 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
313 | zap_cursor_advance(&zc)) { | |
314 | uint64_t intval = 0; | |
315 | char *strval = NULL; | |
316 | zprop_source_t src = ZPROP_SRC_DEFAULT; | |
317 | zpool_prop_t prop; | |
318 | ||
319 | if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL) | |
320 | continue; | |
321 | ||
322 | switch (za.za_integer_length) { | |
323 | case 8: | |
324 | /* integer property */ | |
325 | if (za.za_first_integer != | |
326 | zpool_prop_default_numeric(prop)) | |
327 | src = ZPROP_SRC_LOCAL; | |
328 | ||
329 | if (prop == ZPOOL_PROP_BOOTFS) { | |
330 | dsl_pool_t *dp; | |
331 | dsl_dataset_t *ds = NULL; | |
332 | ||
333 | dp = spa_get_dsl(spa); | |
13fe0198 | 334 | dsl_pool_config_enter(dp, FTAG); |
c65aa5b2 BB |
335 | if ((err = dsl_dataset_hold_obj(dp, |
336 | za.za_first_integer, FTAG, &ds))) { | |
13fe0198 | 337 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f BB |
338 | break; |
339 | } | |
340 | ||
341 | strval = kmem_alloc( | |
342 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, | |
79c76d5b | 343 | KM_SLEEP); |
34dc7c2f | 344 | dsl_dataset_name(ds, strval); |
b128c09f | 345 | dsl_dataset_rele(ds, FTAG); |
13fe0198 | 346 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f BB |
347 | } else { |
348 | strval = NULL; | |
349 | intval = za.za_first_integer; | |
350 | } | |
351 | ||
352 | spa_prop_add_list(*nvp, prop, strval, intval, src); | |
353 | ||
354 | if (strval != NULL) | |
355 | kmem_free(strval, | |
356 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); | |
357 | ||
358 | break; | |
359 | ||
360 | case 1: | |
361 | /* string property */ | |
79c76d5b | 362 | strval = kmem_alloc(za.za_num_integers, KM_SLEEP); |
34dc7c2f BB |
363 | err = zap_lookup(mos, spa->spa_pool_props_object, |
364 | za.za_name, 1, za.za_num_integers, strval); | |
365 | if (err) { | |
366 | kmem_free(strval, za.za_num_integers); | |
367 | break; | |
368 | } | |
369 | spa_prop_add_list(*nvp, prop, strval, 0, src); | |
370 | kmem_free(strval, za.za_num_integers); | |
371 | break; | |
372 | ||
373 | default: | |
374 | break; | |
375 | } | |
376 | } | |
377 | zap_cursor_fini(&zc); | |
378 | mutex_exit(&spa->spa_props_lock); | |
379 | out: | |
380 | if (err && err != ENOENT) { | |
381 | nvlist_free(*nvp); | |
382 | *nvp = NULL; | |
383 | return (err); | |
384 | } | |
385 | ||
386 | return (0); | |
387 | } | |
388 | ||
389 | /* | |
390 | * Validate the given pool properties nvlist and modify the list | |
391 | * for the property values to be set. | |
392 | */ | |
393 | static int | |
394 | spa_prop_validate(spa_t *spa, nvlist_t *props) | |
395 | { | |
396 | nvpair_t *elem; | |
397 | int error = 0, reset_bootfs = 0; | |
d4ed6673 | 398 | uint64_t objnum = 0; |
9ae529ec | 399 | boolean_t has_feature = B_FALSE; |
34dc7c2f BB |
400 | |
401 | elem = NULL; | |
402 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
34dc7c2f | 403 | uint64_t intval; |
9ae529ec CS |
404 | char *strval, *slash, *check, *fname; |
405 | const char *propname = nvpair_name(elem); | |
406 | zpool_prop_t prop = zpool_name_to_prop(propname); | |
407 | ||
408 | switch ((int)prop) { | |
409 | case ZPROP_INVAL: | |
410 | if (!zpool_prop_feature(propname)) { | |
2e528b49 | 411 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
412 | break; |
413 | } | |
414 | ||
415 | /* | |
416 | * Sanitize the input. | |
417 | */ | |
418 | if (nvpair_type(elem) != DATA_TYPE_UINT64) { | |
2e528b49 | 419 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
420 | break; |
421 | } | |
422 | ||
423 | if (nvpair_value_uint64(elem, &intval) != 0) { | |
2e528b49 | 424 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
425 | break; |
426 | } | |
34dc7c2f | 427 | |
9ae529ec | 428 | if (intval != 0) { |
2e528b49 | 429 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
430 | break; |
431 | } | |
34dc7c2f | 432 | |
9ae529ec CS |
433 | fname = strchr(propname, '@') + 1; |
434 | if (zfeature_lookup_name(fname, NULL) != 0) { | |
2e528b49 | 435 | error = SET_ERROR(EINVAL); |
9ae529ec CS |
436 | break; |
437 | } | |
438 | ||
439 | has_feature = B_TRUE; | |
440 | break; | |
34dc7c2f | 441 | |
34dc7c2f BB |
442 | case ZPOOL_PROP_VERSION: |
443 | error = nvpair_value_uint64(elem, &intval); | |
444 | if (!error && | |
9ae529ec CS |
445 | (intval < spa_version(spa) || |
446 | intval > SPA_VERSION_BEFORE_FEATURES || | |
447 | has_feature)) | |
2e528b49 | 448 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
449 | break; |
450 | ||
451 | case ZPOOL_PROP_DELEGATION: | |
452 | case ZPOOL_PROP_AUTOREPLACE: | |
b128c09f | 453 | case ZPOOL_PROP_LISTSNAPS: |
9babb374 | 454 | case ZPOOL_PROP_AUTOEXPAND: |
34dc7c2f BB |
455 | error = nvpair_value_uint64(elem, &intval); |
456 | if (!error && intval > 1) | |
2e528b49 | 457 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
458 | break; |
459 | ||
460 | case ZPOOL_PROP_BOOTFS: | |
9babb374 BB |
461 | /* |
462 | * If the pool version is less than SPA_VERSION_BOOTFS, | |
463 | * or the pool is still being created (version == 0), | |
464 | * the bootfs property cannot be set. | |
465 | */ | |
34dc7c2f | 466 | if (spa_version(spa) < SPA_VERSION_BOOTFS) { |
2e528b49 | 467 | error = SET_ERROR(ENOTSUP); |
34dc7c2f BB |
468 | break; |
469 | } | |
470 | ||
471 | /* | |
b128c09f | 472 | * Make sure the vdev config is bootable |
34dc7c2f | 473 | */ |
b128c09f | 474 | if (!vdev_is_bootable(spa->spa_root_vdev)) { |
2e528b49 | 475 | error = SET_ERROR(ENOTSUP); |
34dc7c2f BB |
476 | break; |
477 | } | |
478 | ||
479 | reset_bootfs = 1; | |
480 | ||
481 | error = nvpair_value_string(elem, &strval); | |
482 | ||
483 | if (!error) { | |
9ae529ec | 484 | objset_t *os; |
b128c09f BB |
485 | uint64_t compress; |
486 | ||
34dc7c2f BB |
487 | if (strval == NULL || strval[0] == '\0') { |
488 | objnum = zpool_prop_default_numeric( | |
489 | ZPOOL_PROP_BOOTFS); | |
490 | break; | |
491 | } | |
492 | ||
d1d7e268 MK |
493 | error = dmu_objset_hold(strval, FTAG, &os); |
494 | if (error) | |
34dc7c2f | 495 | break; |
b128c09f | 496 | |
428870ff BB |
497 | /* Must be ZPL and not gzip compressed. */ |
498 | ||
499 | if (dmu_objset_type(os) != DMU_OST_ZFS) { | |
2e528b49 | 500 | error = SET_ERROR(ENOTSUP); |
13fe0198 MA |
501 | } else if ((error = |
502 | dsl_prop_get_int_ds(dmu_objset_ds(os), | |
b128c09f | 503 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), |
13fe0198 | 504 | &compress)) == 0 && |
b128c09f | 505 | !BOOTFS_COMPRESS_VALID(compress)) { |
2e528b49 | 506 | error = SET_ERROR(ENOTSUP); |
b128c09f BB |
507 | } else { |
508 | objnum = dmu_objset_id(os); | |
509 | } | |
428870ff | 510 | dmu_objset_rele(os, FTAG); |
34dc7c2f BB |
511 | } |
512 | break; | |
b128c09f | 513 | |
34dc7c2f BB |
514 | case ZPOOL_PROP_FAILUREMODE: |
515 | error = nvpair_value_uint64(elem, &intval); | |
516 | if (!error && (intval < ZIO_FAILURE_MODE_WAIT || | |
517 | intval > ZIO_FAILURE_MODE_PANIC)) | |
2e528b49 | 518 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
519 | |
520 | /* | |
521 | * This is a special case which only occurs when | |
522 | * the pool has completely failed. This allows | |
523 | * the user to change the in-core failmode property | |
524 | * without syncing it out to disk (I/Os might | |
525 | * currently be blocked). We do this by returning | |
526 | * EIO to the caller (spa_prop_set) to trick it | |
527 | * into thinking we encountered a property validation | |
528 | * error. | |
529 | */ | |
b128c09f | 530 | if (!error && spa_suspended(spa)) { |
34dc7c2f | 531 | spa->spa_failmode = intval; |
2e528b49 | 532 | error = SET_ERROR(EIO); |
34dc7c2f BB |
533 | } |
534 | break; | |
535 | ||
536 | case ZPOOL_PROP_CACHEFILE: | |
537 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
538 | break; | |
539 | ||
540 | if (strval[0] == '\0') | |
541 | break; | |
542 | ||
543 | if (strcmp(strval, "none") == 0) | |
544 | break; | |
545 | ||
546 | if (strval[0] != '/') { | |
2e528b49 | 547 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
548 | break; |
549 | } | |
550 | ||
551 | slash = strrchr(strval, '/'); | |
552 | ASSERT(slash != NULL); | |
553 | ||
554 | if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
555 | strcmp(slash, "/..") == 0) | |
2e528b49 | 556 | error = SET_ERROR(EINVAL); |
34dc7c2f | 557 | break; |
428870ff | 558 | |
d96eb2b1 DM |
559 | case ZPOOL_PROP_COMMENT: |
560 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
561 | break; | |
562 | for (check = strval; *check != '\0'; check++) { | |
563 | if (!isprint(*check)) { | |
2e528b49 | 564 | error = SET_ERROR(EINVAL); |
d96eb2b1 DM |
565 | break; |
566 | } | |
567 | check++; | |
568 | } | |
569 | if (strlen(strval) > ZPROP_MAX_COMMENT) | |
2e528b49 | 570 | error = SET_ERROR(E2BIG); |
d96eb2b1 DM |
571 | break; |
572 | ||
428870ff BB |
573 | case ZPOOL_PROP_DEDUPDITTO: |
574 | if (spa_version(spa) < SPA_VERSION_DEDUP) | |
2e528b49 | 575 | error = SET_ERROR(ENOTSUP); |
428870ff BB |
576 | else |
577 | error = nvpair_value_uint64(elem, &intval); | |
578 | if (error == 0 && | |
579 | intval != 0 && intval < ZIO_DEDUPDITTO_MIN) | |
2e528b49 | 580 | error = SET_ERROR(EINVAL); |
428870ff | 581 | break; |
e75c13c3 BB |
582 | |
583 | default: | |
584 | break; | |
34dc7c2f BB |
585 | } |
586 | ||
587 | if (error) | |
588 | break; | |
589 | } | |
590 | ||
591 | if (!error && reset_bootfs) { | |
592 | error = nvlist_remove(props, | |
593 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
594 | ||
595 | if (!error) { | |
596 | error = nvlist_add_uint64(props, | |
597 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
598 | } | |
599 | } | |
600 | ||
601 | return (error); | |
602 | } | |
603 | ||
d164b209 BB |
604 | void |
605 | spa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync) | |
606 | { | |
607 | char *cachefile; | |
608 | spa_config_dirent_t *dp; | |
609 | ||
610 | if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), | |
611 | &cachefile) != 0) | |
612 | return; | |
613 | ||
614 | dp = kmem_alloc(sizeof (spa_config_dirent_t), | |
79c76d5b | 615 | KM_SLEEP); |
d164b209 BB |
616 | |
617 | if (cachefile[0] == '\0') | |
618 | dp->scd_path = spa_strdup(spa_config_path); | |
619 | else if (strcmp(cachefile, "none") == 0) | |
620 | dp->scd_path = NULL; | |
621 | else | |
622 | dp->scd_path = spa_strdup(cachefile); | |
623 | ||
624 | list_insert_head(&spa->spa_config_list, dp); | |
625 | if (need_sync) | |
626 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
627 | } | |
628 | ||
34dc7c2f BB |
629 | int |
630 | spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
631 | { | |
632 | int error; | |
9ae529ec | 633 | nvpair_t *elem = NULL; |
d164b209 | 634 | boolean_t need_sync = B_FALSE; |
34dc7c2f BB |
635 | |
636 | if ((error = spa_prop_validate(spa, nvp)) != 0) | |
637 | return (error); | |
638 | ||
d164b209 | 639 | while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) { |
9ae529ec | 640 | zpool_prop_t prop = zpool_name_to_prop(nvpair_name(elem)); |
d164b209 | 641 | |
572e2857 BB |
642 | if (prop == ZPOOL_PROP_CACHEFILE || |
643 | prop == ZPOOL_PROP_ALTROOT || | |
644 | prop == ZPOOL_PROP_READONLY) | |
d164b209 BB |
645 | continue; |
646 | ||
9ae529ec CS |
647 | if (prop == ZPOOL_PROP_VERSION || prop == ZPROP_INVAL) { |
648 | uint64_t ver; | |
649 | ||
650 | if (prop == ZPOOL_PROP_VERSION) { | |
651 | VERIFY(nvpair_value_uint64(elem, &ver) == 0); | |
652 | } else { | |
653 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
654 | ver = SPA_VERSION_FEATURES; | |
655 | need_sync = B_TRUE; | |
656 | } | |
657 | ||
658 | /* Save time if the version is already set. */ | |
659 | if (ver == spa_version(spa)) | |
660 | continue; | |
661 | ||
662 | /* | |
663 | * In addition to the pool directory object, we might | |
664 | * create the pool properties object, the features for | |
665 | * read object, the features for write object, or the | |
666 | * feature descriptions object. | |
667 | */ | |
13fe0198 MA |
668 | error = dsl_sync_task(spa->spa_name, NULL, |
669 | spa_sync_version, &ver, 6); | |
9ae529ec CS |
670 | if (error) |
671 | return (error); | |
672 | continue; | |
673 | } | |
674 | ||
d164b209 BB |
675 | need_sync = B_TRUE; |
676 | break; | |
677 | } | |
678 | ||
9ae529ec | 679 | if (need_sync) { |
13fe0198 MA |
680 | return (dsl_sync_task(spa->spa_name, NULL, spa_sync_props, |
681 | nvp, 6)); | |
9ae529ec CS |
682 | } |
683 | ||
684 | return (0); | |
34dc7c2f BB |
685 | } |
686 | ||
687 | /* | |
688 | * If the bootfs property value is dsobj, clear it. | |
689 | */ | |
690 | void | |
691 | spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
692 | { | |
693 | if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
694 | VERIFY(zap_remove(spa->spa_meta_objset, | |
695 | spa->spa_pool_props_object, | |
696 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
697 | spa->spa_bootfs = 0; | |
698 | } | |
699 | } | |
700 | ||
3bc7e0fb GW |
701 | /*ARGSUSED*/ |
702 | static int | |
13fe0198 | 703 | spa_change_guid_check(void *arg, dmu_tx_t *tx) |
3bc7e0fb | 704 | { |
13fe0198 | 705 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; |
3bc7e0fb GW |
706 | vdev_t *rvd = spa->spa_root_vdev; |
707 | uint64_t vdev_state; | |
13fe0198 | 708 | ASSERTV(uint64_t *newguid = arg); |
3bc7e0fb GW |
709 | |
710 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
711 | vdev_state = rvd->vdev_state; | |
712 | spa_config_exit(spa, SCL_STATE, FTAG); | |
713 | ||
714 | if (vdev_state != VDEV_STATE_HEALTHY) | |
2e528b49 | 715 | return (SET_ERROR(ENXIO)); |
3bc7e0fb GW |
716 | |
717 | ASSERT3U(spa_guid(spa), !=, *newguid); | |
718 | ||
719 | return (0); | |
720 | } | |
721 | ||
722 | static void | |
13fe0198 | 723 | spa_change_guid_sync(void *arg, dmu_tx_t *tx) |
3bc7e0fb | 724 | { |
13fe0198 MA |
725 | uint64_t *newguid = arg; |
726 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
3bc7e0fb GW |
727 | uint64_t oldguid; |
728 | vdev_t *rvd = spa->spa_root_vdev; | |
729 | ||
730 | oldguid = spa_guid(spa); | |
731 | ||
732 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
733 | rvd->vdev_guid = *newguid; | |
734 | rvd->vdev_guid_sum += (*newguid - oldguid); | |
735 | vdev_config_dirty(rvd); | |
736 | spa_config_exit(spa, SCL_STATE, FTAG); | |
737 | ||
6f1ffb06 MA |
738 | spa_history_log_internal(spa, "guid change", tx, "old=%llu new=%llu", |
739 | oldguid, *newguid); | |
3bc7e0fb GW |
740 | } |
741 | ||
3541dc6d GA |
742 | /* |
743 | * Change the GUID for the pool. This is done so that we can later | |
744 | * re-import a pool built from a clone of our own vdevs. We will modify | |
745 | * the root vdev's guid, our own pool guid, and then mark all of our | |
746 | * vdevs dirty. Note that we must make sure that all our vdevs are | |
747 | * online when we do this, or else any vdevs that weren't present | |
748 | * would be orphaned from our pool. We are also going to issue a | |
749 | * sysevent to update any watchers. | |
750 | */ | |
751 | int | |
752 | spa_change_guid(spa_t *spa) | |
753 | { | |
3bc7e0fb GW |
754 | int error; |
755 | uint64_t guid; | |
3541dc6d | 756 | |
621dd7bb | 757 | mutex_enter(&spa->spa_vdev_top_lock); |
3bc7e0fb GW |
758 | mutex_enter(&spa_namespace_lock); |
759 | guid = spa_generate_guid(NULL); | |
3541dc6d | 760 | |
13fe0198 MA |
761 | error = dsl_sync_task(spa->spa_name, spa_change_guid_check, |
762 | spa_change_guid_sync, &guid, 5); | |
3541dc6d | 763 | |
3bc7e0fb GW |
764 | if (error == 0) { |
765 | spa_config_sync(spa, B_FALSE, B_TRUE); | |
766 | spa_event_notify(spa, NULL, FM_EREPORT_ZFS_POOL_REGUID); | |
767 | } | |
3541dc6d | 768 | |
3bc7e0fb | 769 | mutex_exit(&spa_namespace_lock); |
621dd7bb | 770 | mutex_exit(&spa->spa_vdev_top_lock); |
3541dc6d | 771 | |
3bc7e0fb | 772 | return (error); |
3541dc6d GA |
773 | } |
774 | ||
34dc7c2f BB |
775 | /* |
776 | * ========================================================================== | |
777 | * SPA state manipulation (open/create/destroy/import/export) | |
778 | * ========================================================================== | |
779 | */ | |
780 | ||
781 | static int | |
782 | spa_error_entry_compare(const void *a, const void *b) | |
783 | { | |
784 | spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
785 | spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
786 | int ret; | |
787 | ||
788 | ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
5dbd68a3 | 789 | sizeof (zbookmark_phys_t)); |
34dc7c2f BB |
790 | |
791 | if (ret < 0) | |
792 | return (-1); | |
793 | else if (ret > 0) | |
794 | return (1); | |
795 | else | |
796 | return (0); | |
797 | } | |
798 | ||
799 | /* | |
800 | * Utility function which retrieves copies of the current logs and | |
801 | * re-initializes them in the process. | |
802 | */ | |
803 | void | |
804 | spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
805 | { | |
806 | ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
807 | ||
808 | bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
809 | bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
810 | ||
811 | avl_create(&spa->spa_errlist_scrub, | |
812 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
813 | offsetof(spa_error_entry_t, se_avl)); | |
814 | avl_create(&spa->spa_errlist_last, | |
815 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
816 | offsetof(spa_error_entry_t, se_avl)); | |
817 | } | |
818 | ||
7ef5e54e AL |
819 | static void |
820 | spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
34dc7c2f | 821 | { |
7ef5e54e AL |
822 | const zio_taskq_info_t *ztip = &zio_taskqs[t][q]; |
823 | enum zti_modes mode = ztip->zti_mode; | |
824 | uint_t value = ztip->zti_value; | |
825 | uint_t count = ztip->zti_count; | |
826 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
827 | char name[32]; | |
828 | uint_t i, flags = 0; | |
428870ff | 829 | boolean_t batch = B_FALSE; |
34dc7c2f | 830 | |
7ef5e54e AL |
831 | if (mode == ZTI_MODE_NULL) { |
832 | tqs->stqs_count = 0; | |
833 | tqs->stqs_taskq = NULL; | |
834 | return; | |
835 | } | |
428870ff | 836 | |
7ef5e54e | 837 | ASSERT3U(count, >, 0); |
428870ff | 838 | |
7ef5e54e AL |
839 | tqs->stqs_count = count; |
840 | tqs->stqs_taskq = kmem_alloc(count * sizeof (taskq_t *), KM_SLEEP); | |
428870ff | 841 | |
e8b96c60 MA |
842 | switch (mode) { |
843 | case ZTI_MODE_FIXED: | |
844 | ASSERT3U(value, >=, 1); | |
845 | value = MAX(value, 1); | |
846 | break; | |
7ef5e54e | 847 | |
e8b96c60 MA |
848 | case ZTI_MODE_BATCH: |
849 | batch = B_TRUE; | |
850 | flags |= TASKQ_THREADS_CPU_PCT; | |
851 | value = zio_taskq_batch_pct; | |
852 | break; | |
7ef5e54e | 853 | |
e8b96c60 MA |
854 | default: |
855 | panic("unrecognized mode for %s_%s taskq (%u:%u) in " | |
856 | "spa_activate()", | |
857 | zio_type_name[t], zio_taskq_types[q], mode, value); | |
858 | break; | |
859 | } | |
7ef5e54e | 860 | |
e8b96c60 MA |
861 | for (i = 0; i < count; i++) { |
862 | taskq_t *tq; | |
7ef5e54e AL |
863 | |
864 | if (count > 1) { | |
865 | (void) snprintf(name, sizeof (name), "%s_%s_%u", | |
866 | zio_type_name[t], zio_taskq_types[q], i); | |
867 | } else { | |
868 | (void) snprintf(name, sizeof (name), "%s_%s", | |
869 | zio_type_name[t], zio_taskq_types[q]); | |
870 | } | |
871 | ||
872 | if (zio_taskq_sysdc && spa->spa_proc != &p0) { | |
873 | if (batch) | |
874 | flags |= TASKQ_DC_BATCH; | |
875 | ||
876 | tq = taskq_create_sysdc(name, value, 50, INT_MAX, | |
877 | spa->spa_proc, zio_taskq_basedc, flags); | |
878 | } else { | |
e8b96c60 MA |
879 | pri_t pri = maxclsyspri; |
880 | /* | |
881 | * The write issue taskq can be extremely CPU | |
882 | * intensive. Run it at slightly lower priority | |
883 | * than the other taskqs. | |
884 | */ | |
885 | if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE) | |
886 | pri--; | |
887 | ||
888 | tq = taskq_create_proc(name, value, pri, 50, | |
7ef5e54e AL |
889 | INT_MAX, spa->spa_proc, flags); |
890 | } | |
891 | ||
892 | tqs->stqs_taskq[i] = tq; | |
893 | } | |
894 | } | |
895 | ||
896 | static void | |
897 | spa_taskqs_fini(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
898 | { | |
899 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
900 | uint_t i; | |
901 | ||
902 | if (tqs->stqs_taskq == NULL) { | |
903 | ASSERT3U(tqs->stqs_count, ==, 0); | |
904 | return; | |
905 | } | |
906 | ||
907 | for (i = 0; i < tqs->stqs_count; i++) { | |
908 | ASSERT3P(tqs->stqs_taskq[i], !=, NULL); | |
909 | taskq_destroy(tqs->stqs_taskq[i]); | |
428870ff | 910 | } |
34dc7c2f | 911 | |
7ef5e54e AL |
912 | kmem_free(tqs->stqs_taskq, tqs->stqs_count * sizeof (taskq_t *)); |
913 | tqs->stqs_taskq = NULL; | |
914 | } | |
34dc7c2f | 915 | |
7ef5e54e AL |
916 | /* |
917 | * Dispatch a task to the appropriate taskq for the ZFS I/O type and priority. | |
918 | * Note that a type may have multiple discrete taskqs to avoid lock contention | |
919 | * on the taskq itself. In that case we choose which taskq at random by using | |
920 | * the low bits of gethrtime(). | |
921 | */ | |
922 | void | |
923 | spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
924 | task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent) | |
925 | { | |
926 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
927 | taskq_t *tq; | |
928 | ||
929 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
930 | ASSERT3U(tqs->stqs_count, !=, 0); | |
931 | ||
932 | if (tqs->stqs_count == 1) { | |
933 | tq = tqs->stqs_taskq[0]; | |
934 | } else { | |
c12936b1 | 935 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
428870ff | 936 | } |
7ef5e54e AL |
937 | |
938 | taskq_dispatch_ent(tq, func, arg, flags, ent); | |
428870ff BB |
939 | } |
940 | ||
044baf00 BB |
941 | /* |
942 | * Same as spa_taskq_dispatch_ent() but block on the task until completion. | |
943 | */ | |
944 | void | |
945 | spa_taskq_dispatch_sync(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
946 | task_func_t *func, void *arg, uint_t flags) | |
947 | { | |
948 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
949 | taskq_t *tq; | |
950 | taskqid_t id; | |
951 | ||
952 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
953 | ASSERT3U(tqs->stqs_count, !=, 0); | |
954 | ||
955 | if (tqs->stqs_count == 1) { | |
956 | tq = tqs->stqs_taskq[0]; | |
957 | } else { | |
c12936b1 | 958 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
044baf00 BB |
959 | } |
960 | ||
961 | id = taskq_dispatch(tq, func, arg, flags); | |
962 | if (id) | |
963 | taskq_wait_id(tq, id); | |
964 | } | |
965 | ||
428870ff BB |
966 | static void |
967 | spa_create_zio_taskqs(spa_t *spa) | |
968 | { | |
d6320ddb BB |
969 | int t, q; |
970 | ||
971 | for (t = 0; t < ZIO_TYPES; t++) { | |
972 | for (q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 973 | spa_taskqs_init(spa, t, q); |
428870ff BB |
974 | } |
975 | } | |
976 | } | |
9babb374 | 977 | |
7b89a549 | 978 | #if defined(_KERNEL) && defined(HAVE_SPA_THREAD) |
428870ff BB |
979 | static void |
980 | spa_thread(void *arg) | |
981 | { | |
982 | callb_cpr_t cprinfo; | |
9babb374 | 983 | |
428870ff BB |
984 | spa_t *spa = arg; |
985 | user_t *pu = PTOU(curproc); | |
9babb374 | 986 | |
428870ff BB |
987 | CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr, |
988 | spa->spa_name); | |
9babb374 | 989 | |
428870ff BB |
990 | ASSERT(curproc != &p0); |
991 | (void) snprintf(pu->u_psargs, sizeof (pu->u_psargs), | |
992 | "zpool-%s", spa->spa_name); | |
993 | (void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm)); | |
994 | ||
995 | /* bind this thread to the requested psrset */ | |
996 | if (zio_taskq_psrset_bind != PS_NONE) { | |
997 | pool_lock(); | |
998 | mutex_enter(&cpu_lock); | |
999 | mutex_enter(&pidlock); | |
1000 | mutex_enter(&curproc->p_lock); | |
1001 | ||
1002 | if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind, | |
1003 | 0, NULL, NULL) == 0) { | |
1004 | curthread->t_bind_pset = zio_taskq_psrset_bind; | |
1005 | } else { | |
1006 | cmn_err(CE_WARN, | |
1007 | "Couldn't bind process for zfs pool \"%s\" to " | |
1008 | "pset %d\n", spa->spa_name, zio_taskq_psrset_bind); | |
1009 | } | |
1010 | ||
1011 | mutex_exit(&curproc->p_lock); | |
1012 | mutex_exit(&pidlock); | |
1013 | mutex_exit(&cpu_lock); | |
1014 | pool_unlock(); | |
1015 | } | |
1016 | ||
1017 | if (zio_taskq_sysdc) { | |
1018 | sysdc_thread_enter(curthread, 100, 0); | |
1019 | } | |
1020 | ||
1021 | spa->spa_proc = curproc; | |
1022 | spa->spa_did = curthread->t_did; | |
1023 | ||
1024 | spa_create_zio_taskqs(spa); | |
1025 | ||
1026 | mutex_enter(&spa->spa_proc_lock); | |
1027 | ASSERT(spa->spa_proc_state == SPA_PROC_CREATED); | |
1028 | ||
1029 | spa->spa_proc_state = SPA_PROC_ACTIVE; | |
1030 | cv_broadcast(&spa->spa_proc_cv); | |
1031 | ||
1032 | CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
1033 | while (spa->spa_proc_state == SPA_PROC_ACTIVE) | |
1034 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1035 | CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock); | |
1036 | ||
1037 | ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE); | |
1038 | spa->spa_proc_state = SPA_PROC_GONE; | |
1039 | spa->spa_proc = &p0; | |
1040 | cv_broadcast(&spa->spa_proc_cv); | |
1041 | CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */ | |
1042 | ||
1043 | mutex_enter(&curproc->p_lock); | |
1044 | lwp_exit(); | |
1045 | } | |
1046 | #endif | |
1047 | ||
1048 | /* | |
1049 | * Activate an uninitialized pool. | |
1050 | */ | |
1051 | static void | |
1052 | spa_activate(spa_t *spa, int mode) | |
1053 | { | |
1054 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
1055 | ||
1056 | spa->spa_state = POOL_STATE_ACTIVE; | |
1057 | spa->spa_mode = mode; | |
1058 | ||
1059 | spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
1060 | spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
1061 | ||
1062 | /* Try to create a covering process */ | |
1063 | mutex_enter(&spa->spa_proc_lock); | |
1064 | ASSERT(spa->spa_proc_state == SPA_PROC_NONE); | |
1065 | ASSERT(spa->spa_proc == &p0); | |
1066 | spa->spa_did = 0; | |
1067 | ||
7b89a549 | 1068 | #ifdef HAVE_SPA_THREAD |
428870ff BB |
1069 | /* Only create a process if we're going to be around a while. */ |
1070 | if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) { | |
1071 | if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri, | |
1072 | NULL, 0) == 0) { | |
1073 | spa->spa_proc_state = SPA_PROC_CREATED; | |
1074 | while (spa->spa_proc_state == SPA_PROC_CREATED) { | |
1075 | cv_wait(&spa->spa_proc_cv, | |
1076 | &spa->spa_proc_lock); | |
9babb374 | 1077 | } |
428870ff BB |
1078 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); |
1079 | ASSERT(spa->spa_proc != &p0); | |
1080 | ASSERT(spa->spa_did != 0); | |
1081 | } else { | |
1082 | #ifdef _KERNEL | |
1083 | cmn_err(CE_WARN, | |
1084 | "Couldn't create process for zfs pool \"%s\"\n", | |
1085 | spa->spa_name); | |
1086 | #endif | |
b128c09f | 1087 | } |
34dc7c2f | 1088 | } |
7b89a549 | 1089 | #endif /* HAVE_SPA_THREAD */ |
428870ff BB |
1090 | mutex_exit(&spa->spa_proc_lock); |
1091 | ||
1092 | /* If we didn't create a process, we need to create our taskqs. */ | |
1093 | if (spa->spa_proc == &p0) { | |
1094 | spa_create_zio_taskqs(spa); | |
1095 | } | |
34dc7c2f | 1096 | |
b128c09f BB |
1097 | list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), |
1098 | offsetof(vdev_t, vdev_config_dirty_node)); | |
0c66c32d JG |
1099 | list_create(&spa->spa_evicting_os_list, sizeof (objset_t), |
1100 | offsetof(objset_t, os_evicting_node)); | |
b128c09f BB |
1101 | list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), |
1102 | offsetof(vdev_t, vdev_state_dirty_node)); | |
34dc7c2f BB |
1103 | |
1104 | txg_list_create(&spa->spa_vdev_txg_list, | |
1105 | offsetof(struct vdev, vdev_txg_node)); | |
1106 | ||
1107 | avl_create(&spa->spa_errlist_scrub, | |
1108 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1109 | offsetof(spa_error_entry_t, se_avl)); | |
1110 | avl_create(&spa->spa_errlist_last, | |
1111 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1112 | offsetof(spa_error_entry_t, se_avl)); | |
1113 | } | |
1114 | ||
1115 | /* | |
1116 | * Opposite of spa_activate(). | |
1117 | */ | |
1118 | static void | |
1119 | spa_deactivate(spa_t *spa) | |
1120 | { | |
d6320ddb BB |
1121 | int t, q; |
1122 | ||
34dc7c2f BB |
1123 | ASSERT(spa->spa_sync_on == B_FALSE); |
1124 | ASSERT(spa->spa_dsl_pool == NULL); | |
1125 | ASSERT(spa->spa_root_vdev == NULL); | |
9babb374 | 1126 | ASSERT(spa->spa_async_zio_root == NULL); |
34dc7c2f BB |
1127 | ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); |
1128 | ||
0c66c32d JG |
1129 | spa_evicting_os_wait(spa); |
1130 | ||
34dc7c2f BB |
1131 | txg_list_destroy(&spa->spa_vdev_txg_list); |
1132 | ||
b128c09f | 1133 | list_destroy(&spa->spa_config_dirty_list); |
0c66c32d | 1134 | list_destroy(&spa->spa_evicting_os_list); |
b128c09f | 1135 | list_destroy(&spa->spa_state_dirty_list); |
34dc7c2f | 1136 | |
cc92e9d0 GW |
1137 | taskq_cancel_id(system_taskq, spa->spa_deadman_tqid); |
1138 | ||
d6320ddb BB |
1139 | for (t = 0; t < ZIO_TYPES; t++) { |
1140 | for (q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 1141 | spa_taskqs_fini(spa, t, q); |
b128c09f | 1142 | } |
34dc7c2f BB |
1143 | } |
1144 | ||
1145 | metaslab_class_destroy(spa->spa_normal_class); | |
1146 | spa->spa_normal_class = NULL; | |
1147 | ||
1148 | metaslab_class_destroy(spa->spa_log_class); | |
1149 | spa->spa_log_class = NULL; | |
1150 | ||
1151 | /* | |
1152 | * If this was part of an import or the open otherwise failed, we may | |
1153 | * still have errors left in the queues. Empty them just in case. | |
1154 | */ | |
1155 | spa_errlog_drain(spa); | |
1156 | ||
1157 | avl_destroy(&spa->spa_errlist_scrub); | |
1158 | avl_destroy(&spa->spa_errlist_last); | |
1159 | ||
1160 | spa->spa_state = POOL_STATE_UNINITIALIZED; | |
428870ff BB |
1161 | |
1162 | mutex_enter(&spa->spa_proc_lock); | |
1163 | if (spa->spa_proc_state != SPA_PROC_NONE) { | |
1164 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); | |
1165 | spa->spa_proc_state = SPA_PROC_DEACTIVATE; | |
1166 | cv_broadcast(&spa->spa_proc_cv); | |
1167 | while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) { | |
1168 | ASSERT(spa->spa_proc != &p0); | |
1169 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1170 | } | |
1171 | ASSERT(spa->spa_proc_state == SPA_PROC_GONE); | |
1172 | spa->spa_proc_state = SPA_PROC_NONE; | |
1173 | } | |
1174 | ASSERT(spa->spa_proc == &p0); | |
1175 | mutex_exit(&spa->spa_proc_lock); | |
1176 | ||
1177 | /* | |
1178 | * We want to make sure spa_thread() has actually exited the ZFS | |
1179 | * module, so that the module can't be unloaded out from underneath | |
1180 | * it. | |
1181 | */ | |
1182 | if (spa->spa_did != 0) { | |
1183 | thread_join(spa->spa_did); | |
1184 | spa->spa_did = 0; | |
1185 | } | |
34dc7c2f BB |
1186 | } |
1187 | ||
1188 | /* | |
1189 | * Verify a pool configuration, and construct the vdev tree appropriately. This | |
1190 | * will create all the necessary vdevs in the appropriate layout, with each vdev | |
1191 | * in the CLOSED state. This will prep the pool before open/creation/import. | |
1192 | * All vdev validation is done by the vdev_alloc() routine. | |
1193 | */ | |
1194 | static int | |
1195 | spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
1196 | uint_t id, int atype) | |
1197 | { | |
1198 | nvlist_t **child; | |
9babb374 | 1199 | uint_t children; |
34dc7c2f | 1200 | int error; |
d6320ddb | 1201 | int c; |
34dc7c2f BB |
1202 | |
1203 | if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
1204 | return (error); | |
1205 | ||
1206 | if ((*vdp)->vdev_ops->vdev_op_leaf) | |
1207 | return (0); | |
1208 | ||
b128c09f BB |
1209 | error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
1210 | &child, &children); | |
1211 | ||
1212 | if (error == ENOENT) | |
1213 | return (0); | |
1214 | ||
1215 | if (error) { | |
34dc7c2f BB |
1216 | vdev_free(*vdp); |
1217 | *vdp = NULL; | |
2e528b49 | 1218 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
1219 | } |
1220 | ||
d6320ddb | 1221 | for (c = 0; c < children; c++) { |
34dc7c2f BB |
1222 | vdev_t *vd; |
1223 | if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
1224 | atype)) != 0) { | |
1225 | vdev_free(*vdp); | |
1226 | *vdp = NULL; | |
1227 | return (error); | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | ASSERT(*vdp != NULL); | |
1232 | ||
1233 | return (0); | |
1234 | } | |
1235 | ||
1236 | /* | |
1237 | * Opposite of spa_load(). | |
1238 | */ | |
1239 | static void | |
1240 | spa_unload(spa_t *spa) | |
1241 | { | |
1242 | int i; | |
1243 | ||
b128c09f BB |
1244 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
1245 | ||
34dc7c2f BB |
1246 | /* |
1247 | * Stop async tasks. | |
1248 | */ | |
1249 | spa_async_suspend(spa); | |
1250 | ||
1251 | /* | |
1252 | * Stop syncing. | |
1253 | */ | |
1254 | if (spa->spa_sync_on) { | |
1255 | txg_sync_stop(spa->spa_dsl_pool); | |
1256 | spa->spa_sync_on = B_FALSE; | |
1257 | } | |
1258 | ||
1259 | /* | |
b128c09f | 1260 | * Wait for any outstanding async I/O to complete. |
34dc7c2f | 1261 | */ |
9babb374 | 1262 | if (spa->spa_async_zio_root != NULL) { |
e022864d MA |
1263 | for (i = 0; i < max_ncpus; i++) |
1264 | (void) zio_wait(spa->spa_async_zio_root[i]); | |
1265 | kmem_free(spa->spa_async_zio_root, max_ncpus * sizeof (void *)); | |
9babb374 BB |
1266 | spa->spa_async_zio_root = NULL; |
1267 | } | |
34dc7c2f | 1268 | |
428870ff BB |
1269 | bpobj_close(&spa->spa_deferred_bpobj); |
1270 | ||
93cf2076 GW |
1271 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
1272 | ||
1273 | /* | |
1274 | * Close all vdevs. | |
1275 | */ | |
1276 | if (spa->spa_root_vdev) | |
1277 | vdev_free(spa->spa_root_vdev); | |
1278 | ASSERT(spa->spa_root_vdev == NULL); | |
1279 | ||
34dc7c2f BB |
1280 | /* |
1281 | * Close the dsl pool. | |
1282 | */ | |
1283 | if (spa->spa_dsl_pool) { | |
1284 | dsl_pool_close(spa->spa_dsl_pool); | |
1285 | spa->spa_dsl_pool = NULL; | |
428870ff | 1286 | spa->spa_meta_objset = NULL; |
34dc7c2f BB |
1287 | } |
1288 | ||
428870ff BB |
1289 | ddt_unload(spa); |
1290 | ||
fb5f0bc8 BB |
1291 | |
1292 | /* | |
1293 | * Drop and purge level 2 cache | |
1294 | */ | |
1295 | spa_l2cache_drop(spa); | |
1296 | ||
34dc7c2f BB |
1297 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
1298 | vdev_free(spa->spa_spares.sav_vdevs[i]); | |
1299 | if (spa->spa_spares.sav_vdevs) { | |
1300 | kmem_free(spa->spa_spares.sav_vdevs, | |
1301 | spa->spa_spares.sav_count * sizeof (void *)); | |
1302 | spa->spa_spares.sav_vdevs = NULL; | |
1303 | } | |
1304 | if (spa->spa_spares.sav_config) { | |
1305 | nvlist_free(spa->spa_spares.sav_config); | |
1306 | spa->spa_spares.sav_config = NULL; | |
1307 | } | |
b128c09f | 1308 | spa->spa_spares.sav_count = 0; |
34dc7c2f | 1309 | |
5ffb9d1d GW |
1310 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
1311 | vdev_clear_stats(spa->spa_l2cache.sav_vdevs[i]); | |
34dc7c2f | 1312 | vdev_free(spa->spa_l2cache.sav_vdevs[i]); |
5ffb9d1d | 1313 | } |
34dc7c2f BB |
1314 | if (spa->spa_l2cache.sav_vdevs) { |
1315 | kmem_free(spa->spa_l2cache.sav_vdevs, | |
1316 | spa->spa_l2cache.sav_count * sizeof (void *)); | |
1317 | spa->spa_l2cache.sav_vdevs = NULL; | |
1318 | } | |
1319 | if (spa->spa_l2cache.sav_config) { | |
1320 | nvlist_free(spa->spa_l2cache.sav_config); | |
1321 | spa->spa_l2cache.sav_config = NULL; | |
1322 | } | |
b128c09f | 1323 | spa->spa_l2cache.sav_count = 0; |
34dc7c2f BB |
1324 | |
1325 | spa->spa_async_suspended = 0; | |
fb5f0bc8 | 1326 | |
d96eb2b1 DM |
1327 | if (spa->spa_comment != NULL) { |
1328 | spa_strfree(spa->spa_comment); | |
1329 | spa->spa_comment = NULL; | |
1330 | } | |
1331 | ||
fb5f0bc8 | 1332 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1333 | } |
1334 | ||
1335 | /* | |
1336 | * Load (or re-load) the current list of vdevs describing the active spares for | |
1337 | * this pool. When this is called, we have some form of basic information in | |
1338 | * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and | |
1339 | * then re-generate a more complete list including status information. | |
1340 | */ | |
1341 | static void | |
1342 | spa_load_spares(spa_t *spa) | |
1343 | { | |
1344 | nvlist_t **spares; | |
1345 | uint_t nspares; | |
1346 | int i; | |
1347 | vdev_t *vd, *tvd; | |
1348 | ||
b128c09f BB |
1349 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1350 | ||
34dc7c2f BB |
1351 | /* |
1352 | * First, close and free any existing spare vdevs. | |
1353 | */ | |
1354 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
1355 | vd = spa->spa_spares.sav_vdevs[i]; | |
1356 | ||
1357 | /* Undo the call to spa_activate() below */ | |
b128c09f BB |
1358 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1359 | B_FALSE)) != NULL && tvd->vdev_isspare) | |
34dc7c2f BB |
1360 | spa_spare_remove(tvd); |
1361 | vdev_close(vd); | |
1362 | vdev_free(vd); | |
1363 | } | |
1364 | ||
1365 | if (spa->spa_spares.sav_vdevs) | |
1366 | kmem_free(spa->spa_spares.sav_vdevs, | |
1367 | spa->spa_spares.sav_count * sizeof (void *)); | |
1368 | ||
1369 | if (spa->spa_spares.sav_config == NULL) | |
1370 | nspares = 0; | |
1371 | else | |
1372 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
1373 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1374 | ||
1375 | spa->spa_spares.sav_count = (int)nspares; | |
1376 | spa->spa_spares.sav_vdevs = NULL; | |
1377 | ||
1378 | if (nspares == 0) | |
1379 | return; | |
1380 | ||
1381 | /* | |
1382 | * Construct the array of vdevs, opening them to get status in the | |
1383 | * process. For each spare, there is potentially two different vdev_t | |
1384 | * structures associated with it: one in the list of spares (used only | |
1385 | * for basic validation purposes) and one in the active vdev | |
1386 | * configuration (if it's spared in). During this phase we open and | |
1387 | * validate each vdev on the spare list. If the vdev also exists in the | |
1388 | * active configuration, then we also mark this vdev as an active spare. | |
1389 | */ | |
904ea276 | 1390 | spa->spa_spares.sav_vdevs = kmem_zalloc(nspares * sizeof (void *), |
79c76d5b | 1391 | KM_SLEEP); |
34dc7c2f BB |
1392 | for (i = 0; i < spa->spa_spares.sav_count; i++) { |
1393 | VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
1394 | VDEV_ALLOC_SPARE) == 0); | |
1395 | ASSERT(vd != NULL); | |
1396 | ||
1397 | spa->spa_spares.sav_vdevs[i] = vd; | |
1398 | ||
b128c09f BB |
1399 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1400 | B_FALSE)) != NULL) { | |
34dc7c2f BB |
1401 | if (!tvd->vdev_isspare) |
1402 | spa_spare_add(tvd); | |
1403 | ||
1404 | /* | |
1405 | * We only mark the spare active if we were successfully | |
1406 | * able to load the vdev. Otherwise, importing a pool | |
1407 | * with a bad active spare would result in strange | |
1408 | * behavior, because multiple pool would think the spare | |
1409 | * is actively in use. | |
1410 | * | |
1411 | * There is a vulnerability here to an equally bizarre | |
1412 | * circumstance, where a dead active spare is later | |
1413 | * brought back to life (onlined or otherwise). Given | |
1414 | * the rarity of this scenario, and the extra complexity | |
1415 | * it adds, we ignore the possibility. | |
1416 | */ | |
1417 | if (!vdev_is_dead(tvd)) | |
1418 | spa_spare_activate(tvd); | |
1419 | } | |
1420 | ||
b128c09f | 1421 | vd->vdev_top = vd; |
9babb374 | 1422 | vd->vdev_aux = &spa->spa_spares; |
b128c09f | 1423 | |
34dc7c2f BB |
1424 | if (vdev_open(vd) != 0) |
1425 | continue; | |
1426 | ||
34dc7c2f BB |
1427 | if (vdev_validate_aux(vd) == 0) |
1428 | spa_spare_add(vd); | |
1429 | } | |
1430 | ||
1431 | /* | |
1432 | * Recompute the stashed list of spares, with status information | |
1433 | * this time. | |
1434 | */ | |
1435 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
1436 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1437 | ||
1438 | spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), | |
79c76d5b | 1439 | KM_SLEEP); |
34dc7c2f BB |
1440 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
1441 | spares[i] = vdev_config_generate(spa, | |
428870ff | 1442 | spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE); |
34dc7c2f BB |
1443 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
1444 | ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
1445 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1446 | nvlist_free(spares[i]); | |
1447 | kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); | |
1448 | } | |
1449 | ||
1450 | /* | |
1451 | * Load (or re-load) the current list of vdevs describing the active l2cache for | |
1452 | * this pool. When this is called, we have some form of basic information in | |
1453 | * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
1454 | * then re-generate a more complete list including status information. | |
1455 | * Devices which are already active have their details maintained, and are | |
1456 | * not re-opened. | |
1457 | */ | |
1458 | static void | |
1459 | spa_load_l2cache(spa_t *spa) | |
1460 | { | |
1461 | nvlist_t **l2cache; | |
1462 | uint_t nl2cache; | |
1463 | int i, j, oldnvdevs; | |
9babb374 | 1464 | uint64_t guid; |
a117a6d6 | 1465 | vdev_t *vd, **oldvdevs, **newvdevs; |
34dc7c2f BB |
1466 | spa_aux_vdev_t *sav = &spa->spa_l2cache; |
1467 | ||
b128c09f BB |
1468 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1469 | ||
34dc7c2f BB |
1470 | if (sav->sav_config != NULL) { |
1471 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
1472 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
79c76d5b | 1473 | newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); |
34dc7c2f BB |
1474 | } else { |
1475 | nl2cache = 0; | |
a117a6d6 | 1476 | newvdevs = NULL; |
34dc7c2f BB |
1477 | } |
1478 | ||
1479 | oldvdevs = sav->sav_vdevs; | |
1480 | oldnvdevs = sav->sav_count; | |
1481 | sav->sav_vdevs = NULL; | |
1482 | sav->sav_count = 0; | |
1483 | ||
1484 | /* | |
1485 | * Process new nvlist of vdevs. | |
1486 | */ | |
1487 | for (i = 0; i < nl2cache; i++) { | |
1488 | VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
1489 | &guid) == 0); | |
1490 | ||
1491 | newvdevs[i] = NULL; | |
1492 | for (j = 0; j < oldnvdevs; j++) { | |
1493 | vd = oldvdevs[j]; | |
1494 | if (vd != NULL && guid == vd->vdev_guid) { | |
1495 | /* | |
1496 | * Retain previous vdev for add/remove ops. | |
1497 | */ | |
1498 | newvdevs[i] = vd; | |
1499 | oldvdevs[j] = NULL; | |
1500 | break; | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | if (newvdevs[i] == NULL) { | |
1505 | /* | |
1506 | * Create new vdev | |
1507 | */ | |
1508 | VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
1509 | VDEV_ALLOC_L2CACHE) == 0); | |
1510 | ASSERT(vd != NULL); | |
1511 | newvdevs[i] = vd; | |
1512 | ||
1513 | /* | |
1514 | * Commit this vdev as an l2cache device, | |
1515 | * even if it fails to open. | |
1516 | */ | |
1517 | spa_l2cache_add(vd); | |
1518 | ||
b128c09f BB |
1519 | vd->vdev_top = vd; |
1520 | vd->vdev_aux = sav; | |
1521 | ||
1522 | spa_l2cache_activate(vd); | |
1523 | ||
34dc7c2f BB |
1524 | if (vdev_open(vd) != 0) |
1525 | continue; | |
1526 | ||
34dc7c2f BB |
1527 | (void) vdev_validate_aux(vd); |
1528 | ||
9babb374 BB |
1529 | if (!vdev_is_dead(vd)) |
1530 | l2arc_add_vdev(spa, vd); | |
34dc7c2f BB |
1531 | } |
1532 | } | |
1533 | ||
1534 | /* | |
1535 | * Purge vdevs that were dropped | |
1536 | */ | |
1537 | for (i = 0; i < oldnvdevs; i++) { | |
1538 | uint64_t pool; | |
1539 | ||
1540 | vd = oldvdevs[i]; | |
1541 | if (vd != NULL) { | |
5ffb9d1d GW |
1542 | ASSERT(vd->vdev_isl2cache); |
1543 | ||
fb5f0bc8 BB |
1544 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
1545 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 1546 | l2arc_remove_vdev(vd); |
5ffb9d1d GW |
1547 | vdev_clear_stats(vd); |
1548 | vdev_free(vd); | |
34dc7c2f BB |
1549 | } |
1550 | } | |
1551 | ||
1552 | if (oldvdevs) | |
1553 | kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
1554 | ||
1555 | if (sav->sav_config == NULL) | |
1556 | goto out; | |
1557 | ||
1558 | sav->sav_vdevs = newvdevs; | |
1559 | sav->sav_count = (int)nl2cache; | |
1560 | ||
1561 | /* | |
1562 | * Recompute the stashed list of l2cache devices, with status | |
1563 | * information this time. | |
1564 | */ | |
1565 | VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
1566 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1567 | ||
79c76d5b | 1568 | l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); |
34dc7c2f BB |
1569 | for (i = 0; i < sav->sav_count; i++) |
1570 | l2cache[i] = vdev_config_generate(spa, | |
428870ff | 1571 | sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
1572 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, |
1573 | ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
1574 | out: | |
1575 | for (i = 0; i < sav->sav_count; i++) | |
1576 | nvlist_free(l2cache[i]); | |
1577 | if (sav->sav_count) | |
1578 | kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
1579 | } | |
1580 | ||
1581 | static int | |
1582 | load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
1583 | { | |
1584 | dmu_buf_t *db; | |
1585 | char *packed = NULL; | |
1586 | size_t nvsize = 0; | |
1587 | int error; | |
1588 | *value = NULL; | |
1589 | ||
c3275b56 BB |
1590 | error = dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db); |
1591 | if (error) | |
1592 | return (error); | |
1593 | ||
34dc7c2f BB |
1594 | nvsize = *(uint64_t *)db->db_data; |
1595 | dmu_buf_rele(db, FTAG); | |
1596 | ||
77aef6f6 | 1597 | packed = vmem_alloc(nvsize, KM_SLEEP); |
9babb374 BB |
1598 | error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed, |
1599 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
1600 | if (error == 0) |
1601 | error = nvlist_unpack(packed, nvsize, value, 0); | |
77aef6f6 | 1602 | vmem_free(packed, nvsize); |
34dc7c2f BB |
1603 | |
1604 | return (error); | |
1605 | } | |
1606 | ||
1607 | /* | |
1608 | * Checks to see if the given vdev could not be opened, in which case we post a | |
1609 | * sysevent to notify the autoreplace code that the device has been removed. | |
1610 | */ | |
1611 | static void | |
1612 | spa_check_removed(vdev_t *vd) | |
1613 | { | |
d6320ddb BB |
1614 | int c; |
1615 | ||
1616 | for (c = 0; c < vd->vdev_children; c++) | |
34dc7c2f BB |
1617 | spa_check_removed(vd->vdev_child[c]); |
1618 | ||
7011fb60 YP |
1619 | if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd) && |
1620 | !vd->vdev_ishole) { | |
26685276 BB |
1621 | zfs_ereport_post(FM_EREPORT_RESOURCE_AUTOREPLACE, |
1622 | vd->vdev_spa, vd, NULL, 0, 0); | |
1623 | spa_event_notify(vd->vdev_spa, vd, FM_EREPORT_ZFS_DEVICE_CHECK); | |
34dc7c2f BB |
1624 | } |
1625 | } | |
1626 | ||
9babb374 | 1627 | /* |
572e2857 | 1628 | * Validate the current config against the MOS config |
9babb374 | 1629 | */ |
572e2857 BB |
1630 | static boolean_t |
1631 | spa_config_valid(spa_t *spa, nvlist_t *config) | |
9babb374 | 1632 | { |
572e2857 BB |
1633 | vdev_t *mrvd, *rvd = spa->spa_root_vdev; |
1634 | nvlist_t *nv; | |
d6320ddb | 1635 | int c, i; |
572e2857 BB |
1636 | |
1637 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nv) == 0); | |
1638 | ||
1639 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1640 | VERIFY(spa_config_parse(spa, &mrvd, nv, NULL, 0, VDEV_ALLOC_LOAD) == 0); | |
1641 | ||
1642 | ASSERT3U(rvd->vdev_children, ==, mrvd->vdev_children); | |
9babb374 | 1643 | |
428870ff | 1644 | /* |
572e2857 BB |
1645 | * If we're doing a normal import, then build up any additional |
1646 | * diagnostic information about missing devices in this config. | |
1647 | * We'll pass this up to the user for further processing. | |
428870ff | 1648 | */ |
572e2857 BB |
1649 | if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) { |
1650 | nvlist_t **child, *nv; | |
1651 | uint64_t idx = 0; | |
1652 | ||
1653 | child = kmem_alloc(rvd->vdev_children * sizeof (nvlist_t **), | |
79c76d5b BB |
1654 | KM_SLEEP); |
1655 | VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
572e2857 | 1656 | |
d6320ddb | 1657 | for (c = 0; c < rvd->vdev_children; c++) { |
572e2857 BB |
1658 | vdev_t *tvd = rvd->vdev_child[c]; |
1659 | vdev_t *mtvd = mrvd->vdev_child[c]; | |
1660 | ||
1661 | if (tvd->vdev_ops == &vdev_missing_ops && | |
1662 | mtvd->vdev_ops != &vdev_missing_ops && | |
1663 | mtvd->vdev_islog) | |
1664 | child[idx++] = vdev_config_generate(spa, mtvd, | |
1665 | B_FALSE, 0); | |
1666 | } | |
9babb374 | 1667 | |
572e2857 BB |
1668 | if (idx) { |
1669 | VERIFY(nvlist_add_nvlist_array(nv, | |
1670 | ZPOOL_CONFIG_CHILDREN, child, idx) == 0); | |
1671 | VERIFY(nvlist_add_nvlist(spa->spa_load_info, | |
1672 | ZPOOL_CONFIG_MISSING_DEVICES, nv) == 0); | |
1673 | ||
d6320ddb | 1674 | for (i = 0; i < idx; i++) |
572e2857 BB |
1675 | nvlist_free(child[i]); |
1676 | } | |
1677 | nvlist_free(nv); | |
1678 | kmem_free(child, rvd->vdev_children * sizeof (char **)); | |
1679 | } | |
1680 | ||
1681 | /* | |
1682 | * Compare the root vdev tree with the information we have | |
1683 | * from the MOS config (mrvd). Check each top-level vdev | |
1684 | * with the corresponding MOS config top-level (mtvd). | |
1685 | */ | |
d6320ddb | 1686 | for (c = 0; c < rvd->vdev_children; c++) { |
572e2857 BB |
1687 | vdev_t *tvd = rvd->vdev_child[c]; |
1688 | vdev_t *mtvd = mrvd->vdev_child[c]; | |
1689 | ||
1690 | /* | |
1691 | * Resolve any "missing" vdevs in the current configuration. | |
1692 | * If we find that the MOS config has more accurate information | |
1693 | * about the top-level vdev then use that vdev instead. | |
1694 | */ | |
1695 | if (tvd->vdev_ops == &vdev_missing_ops && | |
1696 | mtvd->vdev_ops != &vdev_missing_ops) { | |
1697 | ||
1698 | if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) | |
1699 | continue; | |
1700 | ||
1701 | /* | |
1702 | * Device specific actions. | |
1703 | */ | |
1704 | if (mtvd->vdev_islog) { | |
1705 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
1706 | } else { | |
1707 | /* | |
1708 | * XXX - once we have 'readonly' pool | |
1709 | * support we should be able to handle | |
1710 | * missing data devices by transitioning | |
1711 | * the pool to readonly. | |
1712 | */ | |
1713 | continue; | |
1714 | } | |
1715 | ||
1716 | /* | |
1717 | * Swap the missing vdev with the data we were | |
1718 | * able to obtain from the MOS config. | |
1719 | */ | |
1720 | vdev_remove_child(rvd, tvd); | |
1721 | vdev_remove_child(mrvd, mtvd); | |
1722 | ||
1723 | vdev_add_child(rvd, mtvd); | |
1724 | vdev_add_child(mrvd, tvd); | |
1725 | ||
1726 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1727 | vdev_load(mtvd); | |
1728 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1729 | ||
1730 | vdev_reopen(rvd); | |
1731 | } else if (mtvd->vdev_islog) { | |
1732 | /* | |
1733 | * Load the slog device's state from the MOS config | |
1734 | * since it's possible that the label does not | |
1735 | * contain the most up-to-date information. | |
1736 | */ | |
1737 | vdev_load_log_state(tvd, mtvd); | |
1738 | vdev_reopen(tvd); | |
1739 | } | |
9babb374 | 1740 | } |
572e2857 | 1741 | vdev_free(mrvd); |
428870ff | 1742 | spa_config_exit(spa, SCL_ALL, FTAG); |
572e2857 BB |
1743 | |
1744 | /* | |
1745 | * Ensure we were able to validate the config. | |
1746 | */ | |
1747 | return (rvd->vdev_guid_sum == spa->spa_uberblock.ub_guid_sum); | |
9babb374 BB |
1748 | } |
1749 | ||
b128c09f BB |
1750 | /* |
1751 | * Check for missing log devices | |
1752 | */ | |
13fe0198 | 1753 | static boolean_t |
b128c09f BB |
1754 | spa_check_logs(spa_t *spa) |
1755 | { | |
13fe0198 MA |
1756 | boolean_t rv = B_FALSE; |
1757 | ||
b128c09f | 1758 | switch (spa->spa_log_state) { |
e75c13c3 BB |
1759 | default: |
1760 | break; | |
b128c09f BB |
1761 | case SPA_LOG_MISSING: |
1762 | /* need to recheck in case slog has been restored */ | |
1763 | case SPA_LOG_UNKNOWN: | |
13fe0198 MA |
1764 | rv = (dmu_objset_find(spa->spa_name, zil_check_log_chain, |
1765 | NULL, DS_FIND_CHILDREN) != 0); | |
1766 | if (rv) | |
428870ff | 1767 | spa_set_log_state(spa, SPA_LOG_MISSING); |
b128c09f | 1768 | break; |
b128c09f | 1769 | } |
13fe0198 | 1770 | return (rv); |
b128c09f BB |
1771 | } |
1772 | ||
428870ff BB |
1773 | static boolean_t |
1774 | spa_passivate_log(spa_t *spa) | |
34dc7c2f | 1775 | { |
428870ff BB |
1776 | vdev_t *rvd = spa->spa_root_vdev; |
1777 | boolean_t slog_found = B_FALSE; | |
d6320ddb | 1778 | int c; |
b128c09f | 1779 | |
428870ff | 1780 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
fb5f0bc8 | 1781 | |
428870ff BB |
1782 | if (!spa_has_slogs(spa)) |
1783 | return (B_FALSE); | |
34dc7c2f | 1784 | |
d6320ddb | 1785 | for (c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
1786 | vdev_t *tvd = rvd->vdev_child[c]; |
1787 | metaslab_group_t *mg = tvd->vdev_mg; | |
34dc7c2f | 1788 | |
428870ff BB |
1789 | if (tvd->vdev_islog) { |
1790 | metaslab_group_passivate(mg); | |
1791 | slog_found = B_TRUE; | |
1792 | } | |
34dc7c2f BB |
1793 | } |
1794 | ||
428870ff BB |
1795 | return (slog_found); |
1796 | } | |
34dc7c2f | 1797 | |
428870ff BB |
1798 | static void |
1799 | spa_activate_log(spa_t *spa) | |
1800 | { | |
1801 | vdev_t *rvd = spa->spa_root_vdev; | |
d6320ddb | 1802 | int c; |
34dc7c2f | 1803 | |
428870ff BB |
1804 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
1805 | ||
d6320ddb | 1806 | for (c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
1807 | vdev_t *tvd = rvd->vdev_child[c]; |
1808 | metaslab_group_t *mg = tvd->vdev_mg; | |
1809 | ||
1810 | if (tvd->vdev_islog) | |
1811 | metaslab_group_activate(mg); | |
34dc7c2f | 1812 | } |
428870ff | 1813 | } |
34dc7c2f | 1814 | |
428870ff BB |
1815 | int |
1816 | spa_offline_log(spa_t *spa) | |
1817 | { | |
13fe0198 | 1818 | int error; |
9babb374 | 1819 | |
13fe0198 MA |
1820 | error = dmu_objset_find(spa_name(spa), zil_vdev_offline, |
1821 | NULL, DS_FIND_CHILDREN); | |
1822 | if (error == 0) { | |
428870ff BB |
1823 | /* |
1824 | * We successfully offlined the log device, sync out the | |
1825 | * current txg so that the "stubby" block can be removed | |
1826 | * by zil_sync(). | |
1827 | */ | |
1828 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
1829 | } | |
1830 | return (error); | |
1831 | } | |
34dc7c2f | 1832 | |
428870ff BB |
1833 | static void |
1834 | spa_aux_check_removed(spa_aux_vdev_t *sav) | |
1835 | { | |
d6320ddb BB |
1836 | int i; |
1837 | ||
1838 | for (i = 0; i < sav->sav_count; i++) | |
428870ff BB |
1839 | spa_check_removed(sav->sav_vdevs[i]); |
1840 | } | |
34dc7c2f | 1841 | |
428870ff BB |
1842 | void |
1843 | spa_claim_notify(zio_t *zio) | |
1844 | { | |
1845 | spa_t *spa = zio->io_spa; | |
34dc7c2f | 1846 | |
428870ff BB |
1847 | if (zio->io_error) |
1848 | return; | |
34dc7c2f | 1849 | |
428870ff BB |
1850 | mutex_enter(&spa->spa_props_lock); /* any mutex will do */ |
1851 | if (spa->spa_claim_max_txg < zio->io_bp->blk_birth) | |
1852 | spa->spa_claim_max_txg = zio->io_bp->blk_birth; | |
1853 | mutex_exit(&spa->spa_props_lock); | |
1854 | } | |
34dc7c2f | 1855 | |
428870ff BB |
1856 | typedef struct spa_load_error { |
1857 | uint64_t sle_meta_count; | |
1858 | uint64_t sle_data_count; | |
1859 | } spa_load_error_t; | |
34dc7c2f | 1860 | |
428870ff BB |
1861 | static void |
1862 | spa_load_verify_done(zio_t *zio) | |
1863 | { | |
1864 | blkptr_t *bp = zio->io_bp; | |
1865 | spa_load_error_t *sle = zio->io_private; | |
1866 | dmu_object_type_t type = BP_GET_TYPE(bp); | |
1867 | int error = zio->io_error; | |
dea377c0 | 1868 | spa_t *spa = zio->io_spa; |
34dc7c2f | 1869 | |
428870ff | 1870 | if (error) { |
9ae529ec | 1871 | if ((BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)) && |
428870ff BB |
1872 | type != DMU_OT_INTENT_LOG) |
1873 | atomic_add_64(&sle->sle_meta_count, 1); | |
1874 | else | |
1875 | atomic_add_64(&sle->sle_data_count, 1); | |
34dc7c2f | 1876 | } |
428870ff | 1877 | zio_data_buf_free(zio->io_data, zio->io_size); |
dea377c0 MA |
1878 | |
1879 | mutex_enter(&spa->spa_scrub_lock); | |
1880 | spa->spa_scrub_inflight--; | |
1881 | cv_broadcast(&spa->spa_scrub_io_cv); | |
1882 | mutex_exit(&spa->spa_scrub_lock); | |
428870ff | 1883 | } |
34dc7c2f | 1884 | |
dea377c0 MA |
1885 | /* |
1886 | * Maximum number of concurrent scrub i/os to create while verifying | |
1887 | * a pool while importing it. | |
1888 | */ | |
1889 | int spa_load_verify_maxinflight = 10000; | |
1890 | int spa_load_verify_metadata = B_TRUE; | |
1891 | int spa_load_verify_data = B_TRUE; | |
1892 | ||
428870ff BB |
1893 | /*ARGSUSED*/ |
1894 | static int | |
1895 | spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, | |
5dbd68a3 | 1896 | const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg) |
428870ff | 1897 | { |
dea377c0 MA |
1898 | zio_t *rio; |
1899 | size_t size; | |
1900 | void *data; | |
34dc7c2f | 1901 | |
dea377c0 MA |
1902 | if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp)) |
1903 | return (0); | |
1904 | /* | |
1905 | * Note: normally this routine will not be called if | |
1906 | * spa_load_verify_metadata is not set. However, it may be useful | |
1907 | * to manually set the flag after the traversal has begun. | |
1908 | */ | |
1909 | if (!spa_load_verify_metadata) | |
1910 | return (0); | |
1911 | if (BP_GET_BUFC_TYPE(bp) == ARC_BUFC_DATA && !spa_load_verify_data) | |
1912 | return (0); | |
1913 | ||
1914 | rio = arg; | |
1915 | size = BP_GET_PSIZE(bp); | |
1916 | data = zio_data_buf_alloc(size); | |
1917 | ||
1918 | mutex_enter(&spa->spa_scrub_lock); | |
1919 | while (spa->spa_scrub_inflight >= spa_load_verify_maxinflight) | |
1920 | cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
1921 | spa->spa_scrub_inflight++; | |
1922 | mutex_exit(&spa->spa_scrub_lock); | |
1923 | ||
1924 | zio_nowait(zio_read(rio, spa, bp, data, size, | |
1925 | spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB, | |
1926 | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL | | |
1927 | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb)); | |
428870ff BB |
1928 | return (0); |
1929 | } | |
34dc7c2f | 1930 | |
428870ff BB |
1931 | static int |
1932 | spa_load_verify(spa_t *spa) | |
1933 | { | |
1934 | zio_t *rio; | |
1935 | spa_load_error_t sle = { 0 }; | |
1936 | zpool_rewind_policy_t policy; | |
1937 | boolean_t verify_ok = B_FALSE; | |
dea377c0 | 1938 | int error = 0; |
34dc7c2f | 1939 | |
428870ff | 1940 | zpool_get_rewind_policy(spa->spa_config, &policy); |
34dc7c2f | 1941 | |
428870ff BB |
1942 | if (policy.zrp_request & ZPOOL_NEVER_REWIND) |
1943 | return (0); | |
34dc7c2f | 1944 | |
428870ff BB |
1945 | rio = zio_root(spa, NULL, &sle, |
1946 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
34dc7c2f | 1947 | |
dea377c0 MA |
1948 | if (spa_load_verify_metadata) { |
1949 | error = traverse_pool(spa, spa->spa_verify_min_txg, | |
1950 | TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA, | |
1951 | spa_load_verify_cb, rio); | |
1952 | } | |
428870ff BB |
1953 | |
1954 | (void) zio_wait(rio); | |
1955 | ||
1956 | spa->spa_load_meta_errors = sle.sle_meta_count; | |
1957 | spa->spa_load_data_errors = sle.sle_data_count; | |
1958 | ||
1959 | if (!error && sle.sle_meta_count <= policy.zrp_maxmeta && | |
1960 | sle.sle_data_count <= policy.zrp_maxdata) { | |
572e2857 BB |
1961 | int64_t loss = 0; |
1962 | ||
428870ff BB |
1963 | verify_ok = B_TRUE; |
1964 | spa->spa_load_txg = spa->spa_uberblock.ub_txg; | |
1965 | spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp; | |
572e2857 BB |
1966 | |
1967 | loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts; | |
1968 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
1969 | ZPOOL_CONFIG_LOAD_TIME, spa->spa_load_txg_ts) == 0); | |
1970 | VERIFY(nvlist_add_int64(spa->spa_load_info, | |
1971 | ZPOOL_CONFIG_REWIND_TIME, loss) == 0); | |
1972 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
1973 | ZPOOL_CONFIG_LOAD_DATA_ERRORS, sle.sle_data_count) == 0); | |
428870ff BB |
1974 | } else { |
1975 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; | |
1976 | } | |
1977 | ||
1978 | if (error) { | |
1979 | if (error != ENXIO && error != EIO) | |
2e528b49 | 1980 | error = SET_ERROR(EIO); |
428870ff BB |
1981 | return (error); |
1982 | } | |
1983 | ||
1984 | return (verify_ok ? 0 : EIO); | |
1985 | } | |
1986 | ||
1987 | /* | |
1988 | * Find a value in the pool props object. | |
1989 | */ | |
1990 | static void | |
1991 | spa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val) | |
1992 | { | |
1993 | (void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object, | |
1994 | zpool_prop_to_name(prop), sizeof (uint64_t), 1, val); | |
1995 | } | |
1996 | ||
1997 | /* | |
1998 | * Find a value in the pool directory object. | |
1999 | */ | |
2000 | static int | |
2001 | spa_dir_prop(spa_t *spa, const char *name, uint64_t *val) | |
2002 | { | |
2003 | return (zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
2004 | name, sizeof (uint64_t), 1, val)); | |
2005 | } | |
2006 | ||
2007 | static int | |
2008 | spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err) | |
2009 | { | |
2010 | vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux); | |
2011 | return (err); | |
2012 | } | |
2013 | ||
2014 | /* | |
2015 | * Fix up config after a partly-completed split. This is done with the | |
2016 | * ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off | |
2017 | * pool have that entry in their config, but only the splitting one contains | |
2018 | * a list of all the guids of the vdevs that are being split off. | |
2019 | * | |
2020 | * This function determines what to do with that list: either rejoin | |
2021 | * all the disks to the pool, or complete the splitting process. To attempt | |
2022 | * the rejoin, each disk that is offlined is marked online again, and | |
2023 | * we do a reopen() call. If the vdev label for every disk that was | |
2024 | * marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL) | |
2025 | * then we call vdev_split() on each disk, and complete the split. | |
2026 | * | |
2027 | * Otherwise we leave the config alone, with all the vdevs in place in | |
2028 | * the original pool. | |
2029 | */ | |
2030 | static void | |
2031 | spa_try_repair(spa_t *spa, nvlist_t *config) | |
2032 | { | |
2033 | uint_t extracted; | |
2034 | uint64_t *glist; | |
2035 | uint_t i, gcount; | |
2036 | nvlist_t *nvl; | |
2037 | vdev_t **vd; | |
2038 | boolean_t attempt_reopen; | |
2039 | ||
2040 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0) | |
2041 | return; | |
2042 | ||
2043 | /* check that the config is complete */ | |
2044 | if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, | |
2045 | &glist, &gcount) != 0) | |
2046 | return; | |
2047 | ||
79c76d5b | 2048 | vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_SLEEP); |
428870ff BB |
2049 | |
2050 | /* attempt to online all the vdevs & validate */ | |
2051 | attempt_reopen = B_TRUE; | |
2052 | for (i = 0; i < gcount; i++) { | |
2053 | if (glist[i] == 0) /* vdev is hole */ | |
2054 | continue; | |
2055 | ||
2056 | vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE); | |
2057 | if (vd[i] == NULL) { | |
2058 | /* | |
2059 | * Don't bother attempting to reopen the disks; | |
2060 | * just do the split. | |
2061 | */ | |
2062 | attempt_reopen = B_FALSE; | |
2063 | } else { | |
2064 | /* attempt to re-online it */ | |
2065 | vd[i]->vdev_offline = B_FALSE; | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | if (attempt_reopen) { | |
2070 | vdev_reopen(spa->spa_root_vdev); | |
2071 | ||
2072 | /* check each device to see what state it's in */ | |
2073 | for (extracted = 0, i = 0; i < gcount; i++) { | |
2074 | if (vd[i] != NULL && | |
2075 | vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL) | |
2076 | break; | |
2077 | ++extracted; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | /* | |
2082 | * If every disk has been moved to the new pool, or if we never | |
2083 | * even attempted to look at them, then we split them off for | |
2084 | * good. | |
2085 | */ | |
2086 | if (!attempt_reopen || gcount == extracted) { | |
2087 | for (i = 0; i < gcount; i++) | |
2088 | if (vd[i] != NULL) | |
2089 | vdev_split(vd[i]); | |
2090 | vdev_reopen(spa->spa_root_vdev); | |
2091 | } | |
2092 | ||
2093 | kmem_free(vd, gcount * sizeof (vdev_t *)); | |
2094 | } | |
2095 | ||
2096 | static int | |
2097 | spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type, | |
2098 | boolean_t mosconfig) | |
2099 | { | |
2100 | nvlist_t *config = spa->spa_config; | |
2101 | char *ereport = FM_EREPORT_ZFS_POOL; | |
d96eb2b1 | 2102 | char *comment; |
428870ff BB |
2103 | int error; |
2104 | uint64_t pool_guid; | |
2105 | nvlist_t *nvl; | |
2106 | ||
2107 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) | |
2e528b49 | 2108 | return (SET_ERROR(EINVAL)); |
428870ff | 2109 | |
d96eb2b1 DM |
2110 | ASSERT(spa->spa_comment == NULL); |
2111 | if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0) | |
2112 | spa->spa_comment = spa_strdup(comment); | |
2113 | ||
428870ff BB |
2114 | /* |
2115 | * Versioning wasn't explicitly added to the label until later, so if | |
2116 | * it's not present treat it as the initial version. | |
2117 | */ | |
2118 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, | |
2119 | &spa->spa_ubsync.ub_version) != 0) | |
2120 | spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; | |
2121 | ||
2122 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
2123 | &spa->spa_config_txg); | |
2124 | ||
2125 | if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && | |
2126 | spa_guid_exists(pool_guid, 0)) { | |
2e528b49 | 2127 | error = SET_ERROR(EEXIST); |
428870ff | 2128 | } else { |
3541dc6d | 2129 | spa->spa_config_guid = pool_guid; |
428870ff BB |
2130 | |
2131 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, | |
2132 | &nvl) == 0) { | |
2133 | VERIFY(nvlist_dup(nvl, &spa->spa_config_splitting, | |
79c76d5b | 2134 | KM_SLEEP) == 0); |
428870ff BB |
2135 | } |
2136 | ||
9ae529ec CS |
2137 | nvlist_free(spa->spa_load_info); |
2138 | spa->spa_load_info = fnvlist_alloc(); | |
2139 | ||
572e2857 | 2140 | gethrestime(&spa->spa_loaded_ts); |
428870ff BB |
2141 | error = spa_load_impl(spa, pool_guid, config, state, type, |
2142 | mosconfig, &ereport); | |
2143 | } | |
2144 | ||
0c66c32d JG |
2145 | /* |
2146 | * Don't count references from objsets that are already closed | |
2147 | * and are making their way through the eviction process. | |
2148 | */ | |
2149 | spa_evicting_os_wait(spa); | |
428870ff | 2150 | spa->spa_minref = refcount_count(&spa->spa_refcount); |
572e2857 BB |
2151 | if (error) { |
2152 | if (error != EEXIST) { | |
2153 | spa->spa_loaded_ts.tv_sec = 0; | |
2154 | spa->spa_loaded_ts.tv_nsec = 0; | |
2155 | } | |
2156 | if (error != EBADF) { | |
2157 | zfs_ereport_post(ereport, spa, NULL, NULL, 0, 0); | |
2158 | } | |
2159 | } | |
428870ff BB |
2160 | spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE; |
2161 | spa->spa_ena = 0; | |
2162 | ||
2163 | return (error); | |
2164 | } | |
2165 | ||
2166 | /* | |
2167 | * Load an existing storage pool, using the pool's builtin spa_config as a | |
2168 | * source of configuration information. | |
2169 | */ | |
bf701a83 BB |
2170 | __attribute__((always_inline)) |
2171 | static inline int | |
428870ff BB |
2172 | spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config, |
2173 | spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, | |
2174 | char **ereport) | |
2175 | { | |
2176 | int error = 0; | |
2177 | nvlist_t *nvroot = NULL; | |
9ae529ec | 2178 | nvlist_t *label; |
428870ff BB |
2179 | vdev_t *rvd; |
2180 | uberblock_t *ub = &spa->spa_uberblock; | |
572e2857 | 2181 | uint64_t children, config_cache_txg = spa->spa_config_txg; |
428870ff | 2182 | int orig_mode = spa->spa_mode; |
e022864d | 2183 | int parse, i; |
428870ff | 2184 | uint64_t obj; |
9ae529ec | 2185 | boolean_t missing_feat_write = B_FALSE; |
428870ff BB |
2186 | |
2187 | /* | |
2188 | * If this is an untrusted config, access the pool in read-only mode. | |
2189 | * This prevents things like resilvering recently removed devices. | |
2190 | */ | |
2191 | if (!mosconfig) | |
2192 | spa->spa_mode = FREAD; | |
2193 | ||
2194 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
2195 | ||
2196 | spa->spa_load_state = state; | |
2197 | ||
2198 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot)) | |
2e528b49 | 2199 | return (SET_ERROR(EINVAL)); |
428870ff BB |
2200 | |
2201 | parse = (type == SPA_IMPORT_EXISTING ? | |
2202 | VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT); | |
2203 | ||
2204 | /* | |
2205 | * Create "The Godfather" zio to hold all async IOs | |
2206 | */ | |
e022864d MA |
2207 | spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *), |
2208 | KM_SLEEP); | |
2209 | for (i = 0; i < max_ncpus; i++) { | |
2210 | spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, | |
2211 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | | |
2212 | ZIO_FLAG_GODFATHER); | |
2213 | } | |
428870ff BB |
2214 | |
2215 | /* | |
2216 | * Parse the configuration into a vdev tree. We explicitly set the | |
2217 | * value that will be returned by spa_version() since parsing the | |
2218 | * configuration requires knowing the version number. | |
2219 | */ | |
2220 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
2221 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, parse); | |
2222 | spa_config_exit(spa, SCL_ALL, FTAG); | |
2223 | ||
2224 | if (error != 0) | |
2225 | return (error); | |
2226 | ||
2227 | ASSERT(spa->spa_root_vdev == rvd); | |
2228 | ||
2229 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2230 | ASSERT(spa_guid(spa) == pool_guid); | |
2231 | } | |
2232 | ||
2233 | /* | |
2234 | * Try to open all vdevs, loading each label in the process. | |
2235 | */ | |
2236 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
2237 | error = vdev_open(rvd); | |
2238 | spa_config_exit(spa, SCL_ALL, FTAG); | |
2239 | if (error != 0) | |
2240 | return (error); | |
2241 | ||
2242 | /* | |
2243 | * We need to validate the vdev labels against the configuration that | |
2244 | * we have in hand, which is dependent on the setting of mosconfig. If | |
2245 | * mosconfig is true then we're validating the vdev labels based on | |
2246 | * that config. Otherwise, we're validating against the cached config | |
2247 | * (zpool.cache) that was read when we loaded the zfs module, and then | |
2248 | * later we will recursively call spa_load() and validate against | |
2249 | * the vdev config. | |
2250 | * | |
2251 | * If we're assembling a new pool that's been split off from an | |
2252 | * existing pool, the labels haven't yet been updated so we skip | |
2253 | * validation for now. | |
2254 | */ | |
2255 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2256 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
c7f2d69d | 2257 | error = vdev_validate(rvd, mosconfig); |
428870ff BB |
2258 | spa_config_exit(spa, SCL_ALL, FTAG); |
2259 | ||
2260 | if (error != 0) | |
2261 | return (error); | |
2262 | ||
2263 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) | |
2e528b49 | 2264 | return (SET_ERROR(ENXIO)); |
428870ff BB |
2265 | } |
2266 | ||
2267 | /* | |
2268 | * Find the best uberblock. | |
2269 | */ | |
9ae529ec | 2270 | vdev_uberblock_load(rvd, ub, &label); |
428870ff BB |
2271 | |
2272 | /* | |
2273 | * If we weren't able to find a single valid uberblock, return failure. | |
2274 | */ | |
9ae529ec CS |
2275 | if (ub->ub_txg == 0) { |
2276 | nvlist_free(label); | |
428870ff | 2277 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO)); |
9ae529ec | 2278 | } |
428870ff BB |
2279 | |
2280 | /* | |
9ae529ec | 2281 | * If the pool has an unsupported version we can't open it. |
428870ff | 2282 | */ |
9ae529ec CS |
2283 | if (!SPA_VERSION_IS_SUPPORTED(ub->ub_version)) { |
2284 | nvlist_free(label); | |
428870ff | 2285 | return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP)); |
9ae529ec CS |
2286 | } |
2287 | ||
2288 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
2289 | nvlist_t *features; | |
2290 | ||
2291 | /* | |
2292 | * If we weren't able to find what's necessary for reading the | |
2293 | * MOS in the label, return failure. | |
2294 | */ | |
2295 | if (label == NULL || nvlist_lookup_nvlist(label, | |
2296 | ZPOOL_CONFIG_FEATURES_FOR_READ, &features) != 0) { | |
2297 | nvlist_free(label); | |
2298 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, | |
2299 | ENXIO)); | |
2300 | } | |
2301 | ||
2302 | /* | |
2303 | * Update our in-core representation with the definitive values | |
2304 | * from the label. | |
2305 | */ | |
2306 | nvlist_free(spa->spa_label_features); | |
2307 | VERIFY(nvlist_dup(features, &spa->spa_label_features, 0) == 0); | |
2308 | } | |
2309 | ||
2310 | nvlist_free(label); | |
2311 | ||
2312 | /* | |
2313 | * Look through entries in the label nvlist's features_for_read. If | |
2314 | * there is a feature listed there which we don't understand then we | |
2315 | * cannot open a pool. | |
2316 | */ | |
2317 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
2318 | nvlist_t *unsup_feat; | |
2319 | nvpair_t *nvp; | |
2320 | ||
2321 | VERIFY(nvlist_alloc(&unsup_feat, NV_UNIQUE_NAME, KM_SLEEP) == | |
2322 | 0); | |
2323 | ||
2324 | for (nvp = nvlist_next_nvpair(spa->spa_label_features, NULL); | |
2325 | nvp != NULL; | |
2326 | nvp = nvlist_next_nvpair(spa->spa_label_features, nvp)) { | |
2327 | if (!zfeature_is_supported(nvpair_name(nvp))) { | |
2328 | VERIFY(nvlist_add_string(unsup_feat, | |
2329 | nvpair_name(nvp), "") == 0); | |
2330 | } | |
2331 | } | |
2332 | ||
2333 | if (!nvlist_empty(unsup_feat)) { | |
2334 | VERIFY(nvlist_add_nvlist(spa->spa_load_info, | |
2335 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat) == 0); | |
2336 | nvlist_free(unsup_feat); | |
2337 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, | |
2338 | ENOTSUP)); | |
2339 | } | |
2340 | ||
2341 | nvlist_free(unsup_feat); | |
2342 | } | |
428870ff BB |
2343 | |
2344 | /* | |
2345 | * If the vdev guid sum doesn't match the uberblock, we have an | |
572e2857 BB |
2346 | * incomplete configuration. We first check to see if the pool |
2347 | * is aware of the complete config (i.e ZPOOL_CONFIG_VDEV_CHILDREN). | |
2348 | * If it is, defer the vdev_guid_sum check till later so we | |
2349 | * can handle missing vdevs. | |
428870ff | 2350 | */ |
572e2857 BB |
2351 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VDEV_CHILDREN, |
2352 | &children) != 0 && mosconfig && type != SPA_IMPORT_ASSEMBLE && | |
428870ff BB |
2353 | rvd->vdev_guid_sum != ub->ub_guid_sum) |
2354 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO)); | |
2355 | ||
2356 | if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) { | |
2357 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
2358 | spa_try_repair(spa, config); | |
2359 | spa_config_exit(spa, SCL_ALL, FTAG); | |
2360 | nvlist_free(spa->spa_config_splitting); | |
2361 | spa->spa_config_splitting = NULL; | |
2362 | } | |
2363 | ||
2364 | /* | |
2365 | * Initialize internal SPA structures. | |
2366 | */ | |
2367 | spa->spa_state = POOL_STATE_ACTIVE; | |
2368 | spa->spa_ubsync = spa->spa_uberblock; | |
2369 | spa->spa_verify_min_txg = spa->spa_extreme_rewind ? | |
2370 | TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1; | |
2371 | spa->spa_first_txg = spa->spa_last_ubsync_txg ? | |
2372 | spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1; | |
2373 | spa->spa_claim_max_txg = spa->spa_first_txg; | |
2374 | spa->spa_prev_software_version = ub->ub_software_version; | |
2375 | ||
9ae529ec | 2376 | error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
428870ff BB |
2377 | if (error) |
2378 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2379 | spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; | |
2380 | ||
2381 | if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object) != 0) | |
2382 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2383 | ||
9ae529ec CS |
2384 | if (spa_version(spa) >= SPA_VERSION_FEATURES) { |
2385 | boolean_t missing_feat_read = B_FALSE; | |
b9b24bb4 | 2386 | nvlist_t *unsup_feat, *enabled_feat; |
b0bc7a84 | 2387 | spa_feature_t i; |
9ae529ec CS |
2388 | |
2389 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ, | |
2390 | &spa->spa_feat_for_read_obj) != 0) { | |
2391 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2392 | } | |
2393 | ||
2394 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE, | |
2395 | &spa->spa_feat_for_write_obj) != 0) { | |
2396 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2397 | } | |
2398 | ||
2399 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS, | |
2400 | &spa->spa_feat_desc_obj) != 0) { | |
2401 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2402 | } | |
2403 | ||
b9b24bb4 CS |
2404 | enabled_feat = fnvlist_alloc(); |
2405 | unsup_feat = fnvlist_alloc(); | |
9ae529ec | 2406 | |
fa86b5db | 2407 | if (!spa_features_check(spa, B_FALSE, |
b9b24bb4 | 2408 | unsup_feat, enabled_feat)) |
9ae529ec CS |
2409 | missing_feat_read = B_TRUE; |
2410 | ||
2411 | if (spa_writeable(spa) || state == SPA_LOAD_TRYIMPORT) { | |
fa86b5db | 2412 | if (!spa_features_check(spa, B_TRUE, |
b9b24bb4 | 2413 | unsup_feat, enabled_feat)) { |
9ae529ec | 2414 | missing_feat_write = B_TRUE; |
b9b24bb4 | 2415 | } |
9ae529ec CS |
2416 | } |
2417 | ||
b9b24bb4 CS |
2418 | fnvlist_add_nvlist(spa->spa_load_info, |
2419 | ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat); | |
2420 | ||
9ae529ec | 2421 | if (!nvlist_empty(unsup_feat)) { |
b9b24bb4 CS |
2422 | fnvlist_add_nvlist(spa->spa_load_info, |
2423 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat); | |
9ae529ec CS |
2424 | } |
2425 | ||
b9b24bb4 CS |
2426 | fnvlist_free(enabled_feat); |
2427 | fnvlist_free(unsup_feat); | |
9ae529ec CS |
2428 | |
2429 | if (!missing_feat_read) { | |
2430 | fnvlist_add_boolean(spa->spa_load_info, | |
2431 | ZPOOL_CONFIG_CAN_RDONLY); | |
2432 | } | |
2433 | ||
2434 | /* | |
2435 | * If the state is SPA_LOAD_TRYIMPORT, our objective is | |
2436 | * twofold: to determine whether the pool is available for | |
2437 | * import in read-write mode and (if it is not) whether the | |
2438 | * pool is available for import in read-only mode. If the pool | |
2439 | * is available for import in read-write mode, it is displayed | |
2440 | * as available in userland; if it is not available for import | |
2441 | * in read-only mode, it is displayed as unavailable in | |
2442 | * userland. If the pool is available for import in read-only | |
2443 | * mode but not read-write mode, it is displayed as unavailable | |
2444 | * in userland with a special note that the pool is actually | |
2445 | * available for open in read-only mode. | |
2446 | * | |
2447 | * As a result, if the state is SPA_LOAD_TRYIMPORT and we are | |
2448 | * missing a feature for write, we must first determine whether | |
2449 | * the pool can be opened read-only before returning to | |
2450 | * userland in order to know whether to display the | |
2451 | * abovementioned note. | |
2452 | */ | |
2453 | if (missing_feat_read || (missing_feat_write && | |
2454 | spa_writeable(spa))) { | |
2455 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, | |
2456 | ENOTSUP)); | |
2457 | } | |
b0bc7a84 MG |
2458 | |
2459 | /* | |
2460 | * Load refcounts for ZFS features from disk into an in-memory | |
2461 | * cache during SPA initialization. | |
2462 | */ | |
2463 | for (i = 0; i < SPA_FEATURES; i++) { | |
2464 | uint64_t refcount; | |
2465 | ||
2466 | error = feature_get_refcount_from_disk(spa, | |
2467 | &spa_feature_table[i], &refcount); | |
2468 | if (error == 0) { | |
2469 | spa->spa_feat_refcount_cache[i] = refcount; | |
2470 | } else if (error == ENOTSUP) { | |
2471 | spa->spa_feat_refcount_cache[i] = | |
2472 | SPA_FEATURE_DISABLED; | |
2473 | } else { | |
2474 | return (spa_vdev_err(rvd, | |
2475 | VDEV_AUX_CORRUPT_DATA, EIO)); | |
2476 | } | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) { | |
2481 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_ENABLED_TXG, | |
9b67f605 | 2482 | &spa->spa_feat_enabled_txg_obj) != 0) |
b0bc7a84 | 2483 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); |
9ae529ec CS |
2484 | } |
2485 | ||
2486 | spa->spa_is_initializing = B_TRUE; | |
2487 | error = dsl_pool_open(spa->spa_dsl_pool); | |
2488 | spa->spa_is_initializing = B_FALSE; | |
2489 | if (error != 0) | |
2490 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2491 | ||
428870ff BB |
2492 | if (!mosconfig) { |
2493 | uint64_t hostid; | |
2494 | nvlist_t *policy = NULL, *nvconfig; | |
2495 | ||
2496 | if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) | |
2497 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2498 | ||
2499 | if (!spa_is_root(spa) && nvlist_lookup_uint64(nvconfig, | |
b128c09f | 2500 | ZPOOL_CONFIG_HOSTID, &hostid) == 0) { |
34dc7c2f BB |
2501 | char *hostname; |
2502 | unsigned long myhostid = 0; | |
2503 | ||
428870ff | 2504 | VERIFY(nvlist_lookup_string(nvconfig, |
34dc7c2f BB |
2505 | ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); |
2506 | ||
d164b209 BB |
2507 | #ifdef _KERNEL |
2508 | myhostid = zone_get_hostid(NULL); | |
2509 | #else /* _KERNEL */ | |
2510 | /* | |
2511 | * We're emulating the system's hostid in userland, so | |
2512 | * we can't use zone_get_hostid(). | |
2513 | */ | |
34dc7c2f | 2514 | (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); |
d164b209 | 2515 | #endif /* _KERNEL */ |
34dc7c2f | 2516 | if (hostid != 0 && myhostid != 0 && |
d164b209 | 2517 | hostid != myhostid) { |
428870ff | 2518 | nvlist_free(nvconfig); |
34dc7c2f | 2519 | cmn_err(CE_WARN, "pool '%s' could not be " |
d1d7e268 MK |
2520 | "loaded as it was last accessed by another " |
2521 | "system (host: %s hostid: 0x%lx). See: " | |
2522 | "http://zfsonlinux.org/msg/ZFS-8000-EY", | |
b128c09f | 2523 | spa_name(spa), hostname, |
34dc7c2f | 2524 | (unsigned long)hostid); |
2e528b49 | 2525 | return (SET_ERROR(EBADF)); |
34dc7c2f BB |
2526 | } |
2527 | } | |
428870ff BB |
2528 | if (nvlist_lookup_nvlist(spa->spa_config, |
2529 | ZPOOL_REWIND_POLICY, &policy) == 0) | |
2530 | VERIFY(nvlist_add_nvlist(nvconfig, | |
2531 | ZPOOL_REWIND_POLICY, policy) == 0); | |
34dc7c2f | 2532 | |
428870ff | 2533 | spa_config_set(spa, nvconfig); |
34dc7c2f BB |
2534 | spa_unload(spa); |
2535 | spa_deactivate(spa); | |
fb5f0bc8 | 2536 | spa_activate(spa, orig_mode); |
34dc7c2f | 2537 | |
428870ff | 2538 | return (spa_load(spa, state, SPA_IMPORT_EXISTING, B_TRUE)); |
34dc7c2f BB |
2539 | } |
2540 | ||
428870ff BB |
2541 | if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj) != 0) |
2542 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2543 | error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj); | |
2544 | if (error != 0) | |
2545 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2546 | |
2547 | /* | |
2548 | * Load the bit that tells us to use the new accounting function | |
2549 | * (raid-z deflation). If we have an older pool, this will not | |
2550 | * be present. | |
2551 | */ | |
428870ff BB |
2552 | error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate); |
2553 | if (error != 0 && error != ENOENT) | |
2554 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2555 | ||
2556 | error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION, | |
2557 | &spa->spa_creation_version); | |
2558 | if (error != 0 && error != ENOENT) | |
2559 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2560 | |
2561 | /* | |
2562 | * Load the persistent error log. If we have an older pool, this will | |
2563 | * not be present. | |
2564 | */ | |
428870ff BB |
2565 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last); |
2566 | if (error != 0 && error != ENOENT) | |
2567 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 2568 | |
428870ff BB |
2569 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB, |
2570 | &spa->spa_errlog_scrub); | |
2571 | if (error != 0 && error != ENOENT) | |
2572 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2573 | |
2574 | /* | |
2575 | * Load the history object. If we have an older pool, this | |
2576 | * will not be present. | |
2577 | */ | |
428870ff BB |
2578 | error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history); |
2579 | if (error != 0 && error != ENOENT) | |
2580 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2581 | ||
2582 | /* | |
2583 | * If we're assembling the pool from the split-off vdevs of | |
2584 | * an existing pool, we don't want to attach the spares & cache | |
2585 | * devices. | |
2586 | */ | |
34dc7c2f BB |
2587 | |
2588 | /* | |
2589 | * Load any hot spares for this pool. | |
2590 | */ | |
428870ff BB |
2591 | error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object); |
2592 | if (error != 0 && error != ENOENT) | |
2593 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2594 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
2595 | ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); |
2596 | if (load_nvlist(spa, spa->spa_spares.sav_object, | |
428870ff BB |
2597 | &spa->spa_spares.sav_config) != 0) |
2598 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 2599 | |
b128c09f | 2600 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2601 | spa_load_spares(spa); |
b128c09f | 2602 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
2603 | } else if (error == 0) { |
2604 | spa->spa_spares.sav_sync = B_TRUE; | |
34dc7c2f BB |
2605 | } |
2606 | ||
2607 | /* | |
2608 | * Load any level 2 ARC devices for this pool. | |
2609 | */ | |
428870ff | 2610 | error = spa_dir_prop(spa, DMU_POOL_L2CACHE, |
34dc7c2f | 2611 | &spa->spa_l2cache.sav_object); |
428870ff BB |
2612 | if (error != 0 && error != ENOENT) |
2613 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2614 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
2615 | ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); |
2616 | if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
428870ff BB |
2617 | &spa->spa_l2cache.sav_config) != 0) |
2618 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 2619 | |
b128c09f | 2620 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2621 | spa_load_l2cache(spa); |
b128c09f | 2622 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
2623 | } else if (error == 0) { |
2624 | spa->spa_l2cache.sav_sync = B_TRUE; | |
b128c09f BB |
2625 | } |
2626 | ||
34dc7c2f BB |
2627 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
2628 | ||
428870ff BB |
2629 | error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object); |
2630 | if (error && error != ENOENT) | |
2631 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2632 | |
2633 | if (error == 0) { | |
2dbedf54 | 2634 | uint64_t autoreplace = 0; |
428870ff BB |
2635 | |
2636 | spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs); | |
2637 | spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace); | |
2638 | spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation); | |
2639 | spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode); | |
2640 | spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand); | |
2641 | spa_prop_find(spa, ZPOOL_PROP_DEDUPDITTO, | |
2642 | &spa->spa_dedup_ditto); | |
2643 | ||
2644 | spa->spa_autoreplace = (autoreplace != 0); | |
34dc7c2f BB |
2645 | } |
2646 | ||
2647 | /* | |
2648 | * If the 'autoreplace' property is set, then post a resource notifying | |
2649 | * the ZFS DE that it should not issue any faults for unopenable | |
2650 | * devices. We also iterate over the vdevs, and post a sysevent for any | |
2651 | * unopenable vdevs so that the normal autoreplace handler can take | |
2652 | * over. | |
2653 | */ | |
428870ff | 2654 | if (spa->spa_autoreplace && state != SPA_LOAD_TRYIMPORT) { |
34dc7c2f | 2655 | spa_check_removed(spa->spa_root_vdev); |
428870ff BB |
2656 | /* |
2657 | * For the import case, this is done in spa_import(), because | |
2658 | * at this point we're using the spare definitions from | |
2659 | * the MOS config, not necessarily from the userland config. | |
2660 | */ | |
2661 | if (state != SPA_LOAD_IMPORT) { | |
2662 | spa_aux_check_removed(&spa->spa_spares); | |
2663 | spa_aux_check_removed(&spa->spa_l2cache); | |
2664 | } | |
2665 | } | |
34dc7c2f BB |
2666 | |
2667 | /* | |
2668 | * Load the vdev state for all toplevel vdevs. | |
2669 | */ | |
2670 | vdev_load(rvd); | |
2671 | ||
2672 | /* | |
2673 | * Propagate the leaf DTLs we just loaded all the way up the tree. | |
2674 | */ | |
b128c09f | 2675 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2676 | vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
b128c09f | 2677 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 2678 | |
428870ff BB |
2679 | /* |
2680 | * Load the DDTs (dedup tables). | |
2681 | */ | |
2682 | error = ddt_load(spa); | |
2683 | if (error != 0) | |
2684 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2685 | ||
2686 | spa_update_dspace(spa); | |
2687 | ||
428870ff | 2688 | /* |
572e2857 BB |
2689 | * Validate the config, using the MOS config to fill in any |
2690 | * information which might be missing. If we fail to validate | |
2691 | * the config then declare the pool unfit for use. If we're | |
2692 | * assembling a pool from a split, the log is not transferred | |
2693 | * over. | |
428870ff BB |
2694 | */ |
2695 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2696 | nvlist_t *nvconfig; | |
2697 | ||
2698 | if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) | |
2699 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2700 | ||
572e2857 BB |
2701 | if (!spa_config_valid(spa, nvconfig)) { |
2702 | nvlist_free(nvconfig); | |
2703 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, | |
2704 | ENXIO)); | |
2705 | } | |
428870ff BB |
2706 | nvlist_free(nvconfig); |
2707 | ||
572e2857 | 2708 | /* |
9ae529ec | 2709 | * Now that we've validated the config, check the state of the |
572e2857 BB |
2710 | * root vdev. If it can't be opened, it indicates one or |
2711 | * more toplevel vdevs are faulted. | |
2712 | */ | |
2713 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) | |
2e528b49 | 2714 | return (SET_ERROR(ENXIO)); |
572e2857 | 2715 | |
428870ff BB |
2716 | if (spa_check_logs(spa)) { |
2717 | *ereport = FM_EREPORT_ZFS_LOG_REPLAY; | |
2718 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG, ENXIO)); | |
2719 | } | |
2720 | } | |
2721 | ||
9ae529ec CS |
2722 | if (missing_feat_write) { |
2723 | ASSERT(state == SPA_LOAD_TRYIMPORT); | |
2724 | ||
2725 | /* | |
2726 | * At this point, we know that we can open the pool in | |
2727 | * read-only mode but not read-write mode. We now have enough | |
2728 | * information and can return to userland. | |
2729 | */ | |
2730 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, ENOTSUP)); | |
2731 | } | |
2732 | ||
572e2857 BB |
2733 | /* |
2734 | * We've successfully opened the pool, verify that we're ready | |
2735 | * to start pushing transactions. | |
2736 | */ | |
2737 | if (state != SPA_LOAD_TRYIMPORT) { | |
c65aa5b2 | 2738 | if ((error = spa_load_verify(spa))) |
572e2857 BB |
2739 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, |
2740 | error)); | |
2741 | } | |
2742 | ||
428870ff BB |
2743 | if (spa_writeable(spa) && (state == SPA_LOAD_RECOVER || |
2744 | spa->spa_load_max_txg == UINT64_MAX)) { | |
34dc7c2f BB |
2745 | dmu_tx_t *tx; |
2746 | int need_update = B_FALSE; | |
d6320ddb | 2747 | int c; |
fb5f0bc8 BB |
2748 | |
2749 | ASSERT(state != SPA_LOAD_TRYIMPORT); | |
34dc7c2f BB |
2750 | |
2751 | /* | |
2752 | * Claim log blocks that haven't been committed yet. | |
2753 | * This must all happen in a single txg. | |
428870ff BB |
2754 | * Note: spa_claim_max_txg is updated by spa_claim_notify(), |
2755 | * invoked from zil_claim_log_block()'s i/o done callback. | |
2756 | * Price of rollback is that we abandon the log. | |
34dc7c2f | 2757 | */ |
428870ff BB |
2758 | spa->spa_claiming = B_TRUE; |
2759 | ||
34dc7c2f BB |
2760 | tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
2761 | spa_first_txg(spa)); | |
b128c09f | 2762 | (void) dmu_objset_find(spa_name(spa), |
34dc7c2f BB |
2763 | zil_claim, tx, DS_FIND_CHILDREN); |
2764 | dmu_tx_commit(tx); | |
2765 | ||
428870ff BB |
2766 | spa->spa_claiming = B_FALSE; |
2767 | ||
2768 | spa_set_log_state(spa, SPA_LOG_GOOD); | |
34dc7c2f BB |
2769 | spa->spa_sync_on = B_TRUE; |
2770 | txg_sync_start(spa->spa_dsl_pool); | |
2771 | ||
2772 | /* | |
428870ff BB |
2773 | * Wait for all claims to sync. We sync up to the highest |
2774 | * claimed log block birth time so that claimed log blocks | |
2775 | * don't appear to be from the future. spa_claim_max_txg | |
2776 | * will have been set for us by either zil_check_log_chain() | |
2777 | * (invoked from spa_check_logs()) or zil_claim() above. | |
34dc7c2f | 2778 | */ |
428870ff | 2779 | txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg); |
34dc7c2f BB |
2780 | |
2781 | /* | |
2782 | * If the config cache is stale, or we have uninitialized | |
2783 | * metaslabs (see spa_vdev_add()), then update the config. | |
45d1cae3 | 2784 | * |
572e2857 | 2785 | * If this is a verbatim import, trust the current |
45d1cae3 | 2786 | * in-core spa_config and update the disk labels. |
34dc7c2f BB |
2787 | */ |
2788 | if (config_cache_txg != spa->spa_config_txg || | |
572e2857 BB |
2789 | state == SPA_LOAD_IMPORT || |
2790 | state == SPA_LOAD_RECOVER || | |
2791 | (spa->spa_import_flags & ZFS_IMPORT_VERBATIM)) | |
34dc7c2f BB |
2792 | need_update = B_TRUE; |
2793 | ||
d6320ddb | 2794 | for (c = 0; c < rvd->vdev_children; c++) |
34dc7c2f BB |
2795 | if (rvd->vdev_child[c]->vdev_ms_array == 0) |
2796 | need_update = B_TRUE; | |
2797 | ||
2798 | /* | |
2799 | * Update the config cache asychronously in case we're the | |
2800 | * root pool, in which case the config cache isn't writable yet. | |
2801 | */ | |
2802 | if (need_update) | |
2803 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
fb5f0bc8 BB |
2804 | |
2805 | /* | |
2806 | * Check all DTLs to see if anything needs resilvering. | |
2807 | */ | |
428870ff BB |
2808 | if (!dsl_scan_resilvering(spa->spa_dsl_pool) && |
2809 | vdev_resilver_needed(rvd, NULL, NULL)) | |
fb5f0bc8 | 2810 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
428870ff | 2811 | |
6f1ffb06 MA |
2812 | /* |
2813 | * Log the fact that we booted up (so that we can detect if | |
2814 | * we rebooted in the middle of an operation). | |
2815 | */ | |
2816 | spa_history_log_version(spa, "open"); | |
2817 | ||
428870ff BB |
2818 | /* |
2819 | * Delete any inconsistent datasets. | |
2820 | */ | |
2821 | (void) dmu_objset_find(spa_name(spa), | |
2822 | dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN); | |
2823 | ||
2824 | /* | |
2825 | * Clean up any stale temporary dataset userrefs. | |
2826 | */ | |
2827 | dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool); | |
34dc7c2f BB |
2828 | } |
2829 | ||
428870ff BB |
2830 | return (0); |
2831 | } | |
34dc7c2f | 2832 | |
428870ff BB |
2833 | static int |
2834 | spa_load_retry(spa_t *spa, spa_load_state_t state, int mosconfig) | |
2835 | { | |
572e2857 BB |
2836 | int mode = spa->spa_mode; |
2837 | ||
428870ff BB |
2838 | spa_unload(spa); |
2839 | spa_deactivate(spa); | |
2840 | ||
dea377c0 | 2841 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg - 1; |
428870ff | 2842 | |
572e2857 | 2843 | spa_activate(spa, mode); |
428870ff BB |
2844 | spa_async_suspend(spa); |
2845 | ||
2846 | return (spa_load(spa, state, SPA_IMPORT_EXISTING, mosconfig)); | |
2847 | } | |
2848 | ||
9ae529ec CS |
2849 | /* |
2850 | * If spa_load() fails this function will try loading prior txg's. If | |
2851 | * 'state' is SPA_LOAD_RECOVER and one of these loads succeeds the pool | |
2852 | * will be rewound to that txg. If 'state' is not SPA_LOAD_RECOVER this | |
2853 | * function will not rewind the pool and will return the same error as | |
2854 | * spa_load(). | |
2855 | */ | |
428870ff BB |
2856 | static int |
2857 | spa_load_best(spa_t *spa, spa_load_state_t state, int mosconfig, | |
2858 | uint64_t max_request, int rewind_flags) | |
2859 | { | |
9ae529ec | 2860 | nvlist_t *loadinfo = NULL; |
428870ff BB |
2861 | nvlist_t *config = NULL; |
2862 | int load_error, rewind_error; | |
2863 | uint64_t safe_rewind_txg; | |
2864 | uint64_t min_txg; | |
2865 | ||
2866 | if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) { | |
2867 | spa->spa_load_max_txg = spa->spa_load_txg; | |
2868 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
2869 | } else { | |
2870 | spa->spa_load_max_txg = max_request; | |
dea377c0 MA |
2871 | if (max_request != UINT64_MAX) |
2872 | spa->spa_extreme_rewind = B_TRUE; | |
428870ff BB |
2873 | } |
2874 | ||
2875 | load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING, | |
2876 | mosconfig); | |
2877 | if (load_error == 0) | |
2878 | return (0); | |
2879 | ||
2880 | if (spa->spa_root_vdev != NULL) | |
2881 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); | |
2882 | ||
2883 | spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg; | |
2884 | spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp; | |
2885 | ||
2886 | if (rewind_flags & ZPOOL_NEVER_REWIND) { | |
2887 | nvlist_free(config); | |
2888 | return (load_error); | |
2889 | } | |
2890 | ||
9ae529ec CS |
2891 | if (state == SPA_LOAD_RECOVER) { |
2892 | /* Price of rolling back is discarding txgs, including log */ | |
428870ff | 2893 | spa_set_log_state(spa, SPA_LOG_CLEAR); |
9ae529ec CS |
2894 | } else { |
2895 | /* | |
2896 | * If we aren't rolling back save the load info from our first | |
2897 | * import attempt so that we can restore it after attempting | |
2898 | * to rewind. | |
2899 | */ | |
2900 | loadinfo = spa->spa_load_info; | |
2901 | spa->spa_load_info = fnvlist_alloc(); | |
2902 | } | |
428870ff BB |
2903 | |
2904 | spa->spa_load_max_txg = spa->spa_last_ubsync_txg; | |
2905 | safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE; | |
2906 | min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ? | |
2907 | TXG_INITIAL : safe_rewind_txg; | |
2908 | ||
2909 | /* | |
2910 | * Continue as long as we're finding errors, we're still within | |
2911 | * the acceptable rewind range, and we're still finding uberblocks | |
2912 | */ | |
2913 | while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg && | |
2914 | spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) { | |
2915 | if (spa->spa_load_max_txg < safe_rewind_txg) | |
2916 | spa->spa_extreme_rewind = B_TRUE; | |
2917 | rewind_error = spa_load_retry(spa, state, mosconfig); | |
2918 | } | |
2919 | ||
428870ff BB |
2920 | spa->spa_extreme_rewind = B_FALSE; |
2921 | spa->spa_load_max_txg = UINT64_MAX; | |
2922 | ||
2923 | if (config && (rewind_error || state != SPA_LOAD_RECOVER)) | |
2924 | spa_config_set(spa, config); | |
2925 | ||
9ae529ec CS |
2926 | if (state == SPA_LOAD_RECOVER) { |
2927 | ASSERT3P(loadinfo, ==, NULL); | |
2928 | return (rewind_error); | |
2929 | } else { | |
2930 | /* Store the rewind info as part of the initial load info */ | |
2931 | fnvlist_add_nvlist(loadinfo, ZPOOL_CONFIG_REWIND_INFO, | |
2932 | spa->spa_load_info); | |
2933 | ||
2934 | /* Restore the initial load info */ | |
2935 | fnvlist_free(spa->spa_load_info); | |
2936 | spa->spa_load_info = loadinfo; | |
2937 | ||
2938 | return (load_error); | |
2939 | } | |
34dc7c2f BB |
2940 | } |
2941 | ||
2942 | /* | |
2943 | * Pool Open/Import | |
2944 | * | |
2945 | * The import case is identical to an open except that the configuration is sent | |
2946 | * down from userland, instead of grabbed from the configuration cache. For the | |
2947 | * case of an open, the pool configuration will exist in the | |
2948 | * POOL_STATE_UNINITIALIZED state. | |
2949 | * | |
2950 | * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
2951 | * the same time open the pool, without having to keep around the spa_t in some | |
2952 | * ambiguous state. | |
2953 | */ | |
2954 | static int | |
428870ff BB |
2955 | spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, |
2956 | nvlist_t **config) | |
34dc7c2f BB |
2957 | { |
2958 | spa_t *spa; | |
572e2857 | 2959 | spa_load_state_t state = SPA_LOAD_OPEN; |
34dc7c2f | 2960 | int error; |
34dc7c2f | 2961 | int locked = B_FALSE; |
526af785 | 2962 | int firstopen = B_FALSE; |
34dc7c2f BB |
2963 | |
2964 | *spapp = NULL; | |
2965 | ||
2966 | /* | |
2967 | * As disgusting as this is, we need to support recursive calls to this | |
2968 | * function because dsl_dir_open() is called during spa_load(), and ends | |
2969 | * up calling spa_open() again. The real fix is to figure out how to | |
2970 | * avoid dsl_dir_open() calling this in the first place. | |
2971 | */ | |
2972 | if (mutex_owner(&spa_namespace_lock) != curthread) { | |
2973 | mutex_enter(&spa_namespace_lock); | |
2974 | locked = B_TRUE; | |
2975 | } | |
2976 | ||
2977 | if ((spa = spa_lookup(pool)) == NULL) { | |
2978 | if (locked) | |
2979 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 2980 | return (SET_ERROR(ENOENT)); |
34dc7c2f | 2981 | } |
428870ff | 2982 | |
34dc7c2f | 2983 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) { |
428870ff BB |
2984 | zpool_rewind_policy_t policy; |
2985 | ||
526af785 PJD |
2986 | firstopen = B_TRUE; |
2987 | ||
428870ff BB |
2988 | zpool_get_rewind_policy(nvpolicy ? nvpolicy : spa->spa_config, |
2989 | &policy); | |
2990 | if (policy.zrp_request & ZPOOL_DO_REWIND) | |
2991 | state = SPA_LOAD_RECOVER; | |
34dc7c2f | 2992 | |
fb5f0bc8 | 2993 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 2994 | |
428870ff BB |
2995 | if (state != SPA_LOAD_RECOVER) |
2996 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
2997 | ||
2998 | error = spa_load_best(spa, state, B_FALSE, policy.zrp_txg, | |
2999 | policy.zrp_request); | |
34dc7c2f BB |
3000 | |
3001 | if (error == EBADF) { | |
3002 | /* | |
3003 | * If vdev_validate() returns failure (indicated by | |
3004 | * EBADF), it indicates that one of the vdevs indicates | |
3005 | * that the pool has been exported or destroyed. If | |
3006 | * this is the case, the config cache is out of sync and | |
3007 | * we should remove the pool from the namespace. | |
3008 | */ | |
34dc7c2f BB |
3009 | spa_unload(spa); |
3010 | spa_deactivate(spa); | |
b128c09f | 3011 | spa_config_sync(spa, B_TRUE, B_TRUE); |
34dc7c2f | 3012 | spa_remove(spa); |
34dc7c2f BB |
3013 | if (locked) |
3014 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 3015 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
3016 | } |
3017 | ||
3018 | if (error) { | |
3019 | /* | |
3020 | * We can't open the pool, but we still have useful | |
3021 | * information: the state of each vdev after the | |
3022 | * attempted vdev_open(). Return this to the user. | |
3023 | */ | |
572e2857 | 3024 | if (config != NULL && spa->spa_config) { |
428870ff | 3025 | VERIFY(nvlist_dup(spa->spa_config, config, |
79c76d5b | 3026 | KM_SLEEP) == 0); |
572e2857 BB |
3027 | VERIFY(nvlist_add_nvlist(*config, |
3028 | ZPOOL_CONFIG_LOAD_INFO, | |
3029 | spa->spa_load_info) == 0); | |
3030 | } | |
34dc7c2f BB |
3031 | spa_unload(spa); |
3032 | spa_deactivate(spa); | |
428870ff | 3033 | spa->spa_last_open_failed = error; |
34dc7c2f BB |
3034 | if (locked) |
3035 | mutex_exit(&spa_namespace_lock); | |
3036 | *spapp = NULL; | |
3037 | return (error); | |
34dc7c2f | 3038 | } |
34dc7c2f BB |
3039 | } |
3040 | ||
3041 | spa_open_ref(spa, tag); | |
3042 | ||
b128c09f | 3043 | if (config != NULL) |
34dc7c2f | 3044 | *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f | 3045 | |
572e2857 BB |
3046 | /* |
3047 | * If we've recovered the pool, pass back any information we | |
3048 | * gathered while doing the load. | |
3049 | */ | |
3050 | if (state == SPA_LOAD_RECOVER) { | |
3051 | VERIFY(nvlist_add_nvlist(*config, ZPOOL_CONFIG_LOAD_INFO, | |
3052 | spa->spa_load_info) == 0); | |
3053 | } | |
3054 | ||
428870ff BB |
3055 | if (locked) { |
3056 | spa->spa_last_open_failed = 0; | |
3057 | spa->spa_last_ubsync_txg = 0; | |
3058 | spa->spa_load_txg = 0; | |
3059 | mutex_exit(&spa_namespace_lock); | |
3060 | } | |
3061 | ||
526af785 PJD |
3062 | #ifdef _KERNEL |
3063 | if (firstopen) | |
3064 | zvol_create_minors(spa->spa_name); | |
3065 | #endif | |
3066 | ||
428870ff BB |
3067 | *spapp = spa; |
3068 | ||
34dc7c2f BB |
3069 | return (0); |
3070 | } | |
3071 | ||
428870ff BB |
3072 | int |
3073 | spa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy, | |
3074 | nvlist_t **config) | |
3075 | { | |
3076 | return (spa_open_common(name, spapp, tag, policy, config)); | |
3077 | } | |
3078 | ||
34dc7c2f BB |
3079 | int |
3080 | spa_open(const char *name, spa_t **spapp, void *tag) | |
3081 | { | |
428870ff | 3082 | return (spa_open_common(name, spapp, tag, NULL, NULL)); |
34dc7c2f BB |
3083 | } |
3084 | ||
3085 | /* | |
3086 | * Lookup the given spa_t, incrementing the inject count in the process, | |
3087 | * preventing it from being exported or destroyed. | |
3088 | */ | |
3089 | spa_t * | |
3090 | spa_inject_addref(char *name) | |
3091 | { | |
3092 | spa_t *spa; | |
3093 | ||
3094 | mutex_enter(&spa_namespace_lock); | |
3095 | if ((spa = spa_lookup(name)) == NULL) { | |
3096 | mutex_exit(&spa_namespace_lock); | |
3097 | return (NULL); | |
3098 | } | |
3099 | spa->spa_inject_ref++; | |
3100 | mutex_exit(&spa_namespace_lock); | |
3101 | ||
3102 | return (spa); | |
3103 | } | |
3104 | ||
3105 | void | |
3106 | spa_inject_delref(spa_t *spa) | |
3107 | { | |
3108 | mutex_enter(&spa_namespace_lock); | |
3109 | spa->spa_inject_ref--; | |
3110 | mutex_exit(&spa_namespace_lock); | |
3111 | } | |
3112 | ||
3113 | /* | |
3114 | * Add spares device information to the nvlist. | |
3115 | */ | |
3116 | static void | |
3117 | spa_add_spares(spa_t *spa, nvlist_t *config) | |
3118 | { | |
3119 | nvlist_t **spares; | |
3120 | uint_t i, nspares; | |
3121 | nvlist_t *nvroot; | |
3122 | uint64_t guid; | |
3123 | vdev_stat_t *vs; | |
3124 | uint_t vsc; | |
3125 | uint64_t pool; | |
3126 | ||
9babb374 BB |
3127 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
3128 | ||
34dc7c2f BB |
3129 | if (spa->spa_spares.sav_count == 0) |
3130 | return; | |
3131 | ||
3132 | VERIFY(nvlist_lookup_nvlist(config, | |
3133 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
3134 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
3135 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
3136 | if (nspares != 0) { | |
3137 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
3138 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
3139 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
3140 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
3141 | ||
3142 | /* | |
3143 | * Go through and find any spares which have since been | |
3144 | * repurposed as an active spare. If this is the case, update | |
3145 | * their status appropriately. | |
3146 | */ | |
3147 | for (i = 0; i < nspares; i++) { | |
3148 | VERIFY(nvlist_lookup_uint64(spares[i], | |
3149 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
b128c09f BB |
3150 | if (spa_spare_exists(guid, &pool, NULL) && |
3151 | pool != 0ULL) { | |
34dc7c2f | 3152 | VERIFY(nvlist_lookup_uint64_array( |
428870ff | 3153 | spares[i], ZPOOL_CONFIG_VDEV_STATS, |
34dc7c2f BB |
3154 | (uint64_t **)&vs, &vsc) == 0); |
3155 | vs->vs_state = VDEV_STATE_CANT_OPEN; | |
3156 | vs->vs_aux = VDEV_AUX_SPARED; | |
3157 | } | |
3158 | } | |
3159 | } | |
3160 | } | |
3161 | ||
3162 | /* | |
3163 | * Add l2cache device information to the nvlist, including vdev stats. | |
3164 | */ | |
3165 | static void | |
3166 | spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
3167 | { | |
3168 | nvlist_t **l2cache; | |
3169 | uint_t i, j, nl2cache; | |
3170 | nvlist_t *nvroot; | |
3171 | uint64_t guid; | |
3172 | vdev_t *vd; | |
3173 | vdev_stat_t *vs; | |
3174 | uint_t vsc; | |
3175 | ||
9babb374 BB |
3176 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
3177 | ||
34dc7c2f BB |
3178 | if (spa->spa_l2cache.sav_count == 0) |
3179 | return; | |
3180 | ||
34dc7c2f BB |
3181 | VERIFY(nvlist_lookup_nvlist(config, |
3182 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
3183 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
3184 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
3185 | if (nl2cache != 0) { | |
3186 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
3187 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
3188 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
3189 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
3190 | ||
3191 | /* | |
3192 | * Update level 2 cache device stats. | |
3193 | */ | |
3194 | ||
3195 | for (i = 0; i < nl2cache; i++) { | |
3196 | VERIFY(nvlist_lookup_uint64(l2cache[i], | |
3197 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
3198 | ||
3199 | vd = NULL; | |
3200 | for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
3201 | if (guid == | |
3202 | spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
3203 | vd = spa->spa_l2cache.sav_vdevs[j]; | |
3204 | break; | |
3205 | } | |
3206 | } | |
3207 | ASSERT(vd != NULL); | |
3208 | ||
3209 | VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
428870ff BB |
3210 | ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) |
3211 | == 0); | |
34dc7c2f BB |
3212 | vdev_get_stats(vd, vs); |
3213 | } | |
3214 | } | |
34dc7c2f BB |
3215 | } |
3216 | ||
9ae529ec | 3217 | static void |
417104bd | 3218 | spa_feature_stats_from_disk(spa_t *spa, nvlist_t *features) |
9ae529ec | 3219 | { |
9ae529ec CS |
3220 | zap_cursor_t zc; |
3221 | zap_attribute_t za; | |
3222 | ||
9ae529ec CS |
3223 | if (spa->spa_feat_for_read_obj != 0) { |
3224 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
3225 | spa->spa_feat_for_read_obj); | |
3226 | zap_cursor_retrieve(&zc, &za) == 0; | |
3227 | zap_cursor_advance(&zc)) { | |
3228 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
3229 | za.za_num_integers == 1); | |
417104bd | 3230 | VERIFY0(nvlist_add_uint64(features, za.za_name, |
9ae529ec CS |
3231 | za.za_first_integer)); |
3232 | } | |
3233 | zap_cursor_fini(&zc); | |
3234 | } | |
3235 | ||
3236 | if (spa->spa_feat_for_write_obj != 0) { | |
3237 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
3238 | spa->spa_feat_for_write_obj); | |
3239 | zap_cursor_retrieve(&zc, &za) == 0; | |
3240 | zap_cursor_advance(&zc)) { | |
3241 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
3242 | za.za_num_integers == 1); | |
417104bd | 3243 | VERIFY0(nvlist_add_uint64(features, za.za_name, |
9ae529ec CS |
3244 | za.za_first_integer)); |
3245 | } | |
3246 | zap_cursor_fini(&zc); | |
3247 | } | |
417104bd NB |
3248 | } |
3249 | ||
3250 | static void | |
3251 | spa_feature_stats_from_cache(spa_t *spa, nvlist_t *features) | |
3252 | { | |
3253 | int i; | |
3254 | ||
3255 | for (i = 0; i < SPA_FEATURES; i++) { | |
3256 | zfeature_info_t feature = spa_feature_table[i]; | |
3257 | uint64_t refcount; | |
3258 | ||
3259 | if (feature_get_refcount(spa, &feature, &refcount) != 0) | |
3260 | continue; | |
3261 | ||
3262 | VERIFY0(nvlist_add_uint64(features, feature.fi_guid, refcount)); | |
3263 | } | |
3264 | } | |
3265 | ||
3266 | /* | |
3267 | * Store a list of pool features and their reference counts in the | |
3268 | * config. | |
3269 | * | |
3270 | * The first time this is called on a spa, allocate a new nvlist, fetch | |
3271 | * the pool features and reference counts from disk, then save the list | |
3272 | * in the spa. In subsequent calls on the same spa use the saved nvlist | |
3273 | * and refresh its values from the cached reference counts. This | |
3274 | * ensures we don't block here on I/O on a suspended pool so 'zpool | |
3275 | * clear' can resume the pool. | |
3276 | */ | |
3277 | static void | |
3278 | spa_add_feature_stats(spa_t *spa, nvlist_t *config) | |
3279 | { | |
4eb30c68 | 3280 | nvlist_t *features; |
417104bd NB |
3281 | |
3282 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); | |
3283 | ||
4eb30c68 NB |
3284 | mutex_enter(&spa->spa_feat_stats_lock); |
3285 | features = spa->spa_feat_stats; | |
3286 | ||
417104bd NB |
3287 | if (features != NULL) { |
3288 | spa_feature_stats_from_cache(spa, features); | |
3289 | } else { | |
3290 | VERIFY0(nvlist_alloc(&features, NV_UNIQUE_NAME, KM_SLEEP)); | |
3291 | spa->spa_feat_stats = features; | |
3292 | spa_feature_stats_from_disk(spa, features); | |
3293 | } | |
9ae529ec | 3294 | |
417104bd NB |
3295 | VERIFY0(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS, |
3296 | features)); | |
4eb30c68 NB |
3297 | |
3298 | mutex_exit(&spa->spa_feat_stats_lock); | |
9ae529ec CS |
3299 | } |
3300 | ||
34dc7c2f | 3301 | int |
9ae529ec CS |
3302 | spa_get_stats(const char *name, nvlist_t **config, |
3303 | char *altroot, size_t buflen) | |
34dc7c2f BB |
3304 | { |
3305 | int error; | |
3306 | spa_t *spa; | |
3307 | ||
3308 | *config = NULL; | |
428870ff | 3309 | error = spa_open_common(name, &spa, FTAG, NULL, config); |
34dc7c2f | 3310 | |
9babb374 BB |
3311 | if (spa != NULL) { |
3312 | /* | |
3313 | * This still leaves a window of inconsistency where the spares | |
3314 | * or l2cache devices could change and the config would be | |
3315 | * self-inconsistent. | |
3316 | */ | |
3317 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
34dc7c2f | 3318 | |
9babb374 | 3319 | if (*config != NULL) { |
572e2857 BB |
3320 | uint64_t loadtimes[2]; |
3321 | ||
3322 | loadtimes[0] = spa->spa_loaded_ts.tv_sec; | |
3323 | loadtimes[1] = spa->spa_loaded_ts.tv_nsec; | |
3324 | VERIFY(nvlist_add_uint64_array(*config, | |
3325 | ZPOOL_CONFIG_LOADED_TIME, loadtimes, 2) == 0); | |
3326 | ||
b128c09f | 3327 | VERIFY(nvlist_add_uint64(*config, |
9babb374 BB |
3328 | ZPOOL_CONFIG_ERRCOUNT, |
3329 | spa_get_errlog_size(spa)) == 0); | |
3330 | ||
3331 | if (spa_suspended(spa)) | |
3332 | VERIFY(nvlist_add_uint64(*config, | |
3333 | ZPOOL_CONFIG_SUSPENDED, | |
3334 | spa->spa_failmode) == 0); | |
b128c09f | 3335 | |
9babb374 BB |
3336 | spa_add_spares(spa, *config); |
3337 | spa_add_l2cache(spa, *config); | |
9ae529ec | 3338 | spa_add_feature_stats(spa, *config); |
9babb374 | 3339 | } |
34dc7c2f BB |
3340 | } |
3341 | ||
3342 | /* | |
3343 | * We want to get the alternate root even for faulted pools, so we cheat | |
3344 | * and call spa_lookup() directly. | |
3345 | */ | |
3346 | if (altroot) { | |
3347 | if (spa == NULL) { | |
3348 | mutex_enter(&spa_namespace_lock); | |
3349 | spa = spa_lookup(name); | |
3350 | if (spa) | |
3351 | spa_altroot(spa, altroot, buflen); | |
3352 | else | |
3353 | altroot[0] = '\0'; | |
3354 | spa = NULL; | |
3355 | mutex_exit(&spa_namespace_lock); | |
3356 | } else { | |
3357 | spa_altroot(spa, altroot, buflen); | |
3358 | } | |
3359 | } | |
3360 | ||
9babb374 BB |
3361 | if (spa != NULL) { |
3362 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
34dc7c2f | 3363 | spa_close(spa, FTAG); |
9babb374 | 3364 | } |
34dc7c2f BB |
3365 | |
3366 | return (error); | |
3367 | } | |
3368 | ||
3369 | /* | |
3370 | * Validate that the auxiliary device array is well formed. We must have an | |
3371 | * array of nvlists, each which describes a valid leaf vdev. If this is an | |
3372 | * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
3373 | * specified, as long as they are well-formed. | |
3374 | */ | |
3375 | static int | |
3376 | spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, | |
3377 | spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
3378 | vdev_labeltype_t label) | |
3379 | { | |
3380 | nvlist_t **dev; | |
3381 | uint_t i, ndev; | |
3382 | vdev_t *vd; | |
3383 | int error; | |
3384 | ||
b128c09f BB |
3385 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
3386 | ||
34dc7c2f BB |
3387 | /* |
3388 | * It's acceptable to have no devs specified. | |
3389 | */ | |
3390 | if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) | |
3391 | return (0); | |
3392 | ||
3393 | if (ndev == 0) | |
2e528b49 | 3394 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
3395 | |
3396 | /* | |
3397 | * Make sure the pool is formatted with a version that supports this | |
3398 | * device type. | |
3399 | */ | |
3400 | if (spa_version(spa) < version) | |
2e528b49 | 3401 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
3402 | |
3403 | /* | |
3404 | * Set the pending device list so we correctly handle device in-use | |
3405 | * checking. | |
3406 | */ | |
3407 | sav->sav_pending = dev; | |
3408 | sav->sav_npending = ndev; | |
3409 | ||
3410 | for (i = 0; i < ndev; i++) { | |
3411 | if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
3412 | mode)) != 0) | |
3413 | goto out; | |
3414 | ||
3415 | if (!vd->vdev_ops->vdev_op_leaf) { | |
3416 | vdev_free(vd); | |
2e528b49 | 3417 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
3418 | goto out; |
3419 | } | |
3420 | ||
3421 | /* | |
b128c09f BB |
3422 | * The L2ARC currently only supports disk devices in |
3423 | * kernel context. For user-level testing, we allow it. | |
34dc7c2f | 3424 | */ |
b128c09f | 3425 | #ifdef _KERNEL |
34dc7c2f BB |
3426 | if ((strcmp(config, ZPOOL_CONFIG_L2CACHE) == 0) && |
3427 | strcmp(vd->vdev_ops->vdev_op_type, VDEV_TYPE_DISK) != 0) { | |
2e528b49 | 3428 | error = SET_ERROR(ENOTBLK); |
5ffb9d1d | 3429 | vdev_free(vd); |
34dc7c2f BB |
3430 | goto out; |
3431 | } | |
b128c09f | 3432 | #endif |
34dc7c2f BB |
3433 | vd->vdev_top = vd; |
3434 | ||
3435 | if ((error = vdev_open(vd)) == 0 && | |
3436 | (error = vdev_label_init(vd, crtxg, label)) == 0) { | |
3437 | VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
3438 | vd->vdev_guid) == 0); | |
3439 | } | |
3440 | ||
3441 | vdev_free(vd); | |
3442 | ||
3443 | if (error && | |
3444 | (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
3445 | goto out; | |
3446 | else | |
3447 | error = 0; | |
3448 | } | |
3449 | ||
3450 | out: | |
3451 | sav->sav_pending = NULL; | |
3452 | sav->sav_npending = 0; | |
3453 | return (error); | |
3454 | } | |
3455 | ||
3456 | static int | |
3457 | spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
3458 | { | |
3459 | int error; | |
3460 | ||
b128c09f BB |
3461 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
3462 | ||
34dc7c2f BB |
3463 | if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, |
3464 | &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
3465 | VDEV_LABEL_SPARE)) != 0) { | |
3466 | return (error); | |
3467 | } | |
3468 | ||
3469 | return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
3470 | &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
3471 | VDEV_LABEL_L2CACHE)); | |
3472 | } | |
3473 | ||
3474 | static void | |
3475 | spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
3476 | const char *config) | |
3477 | { | |
3478 | int i; | |
3479 | ||
3480 | if (sav->sav_config != NULL) { | |
3481 | nvlist_t **olddevs; | |
3482 | uint_t oldndevs; | |
3483 | nvlist_t **newdevs; | |
3484 | ||
3485 | /* | |
3486 | * Generate new dev list by concatentating with the | |
3487 | * current dev list. | |
3488 | */ | |
3489 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
3490 | &olddevs, &oldndevs) == 0); | |
3491 | ||
3492 | newdevs = kmem_alloc(sizeof (void *) * | |
79c76d5b | 3493 | (ndevs + oldndevs), KM_SLEEP); |
34dc7c2f BB |
3494 | for (i = 0; i < oldndevs; i++) |
3495 | VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
79c76d5b | 3496 | KM_SLEEP) == 0); |
34dc7c2f BB |
3497 | for (i = 0; i < ndevs; i++) |
3498 | VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
79c76d5b | 3499 | KM_SLEEP) == 0); |
34dc7c2f BB |
3500 | |
3501 | VERIFY(nvlist_remove(sav->sav_config, config, | |
3502 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
3503 | ||
3504 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
3505 | config, newdevs, ndevs + oldndevs) == 0); | |
3506 | for (i = 0; i < oldndevs + ndevs; i++) | |
3507 | nvlist_free(newdevs[i]); | |
3508 | kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
3509 | } else { | |
3510 | /* | |
3511 | * Generate a new dev list. | |
3512 | */ | |
3513 | VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
79c76d5b | 3514 | KM_SLEEP) == 0); |
34dc7c2f BB |
3515 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, |
3516 | devs, ndevs) == 0); | |
3517 | } | |
3518 | } | |
3519 | ||
3520 | /* | |
3521 | * Stop and drop level 2 ARC devices | |
3522 | */ | |
3523 | void | |
3524 | spa_l2cache_drop(spa_t *spa) | |
3525 | { | |
3526 | vdev_t *vd; | |
3527 | int i; | |
3528 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
3529 | ||
3530 | for (i = 0; i < sav->sav_count; i++) { | |
3531 | uint64_t pool; | |
3532 | ||
3533 | vd = sav->sav_vdevs[i]; | |
3534 | ASSERT(vd != NULL); | |
3535 | ||
fb5f0bc8 BB |
3536 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
3537 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 3538 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
3539 | } |
3540 | } | |
3541 | ||
3542 | /* | |
3543 | * Pool Creation | |
3544 | */ | |
3545 | int | |
3546 | spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, | |
6f1ffb06 | 3547 | nvlist_t *zplprops) |
34dc7c2f BB |
3548 | { |
3549 | spa_t *spa; | |
3550 | char *altroot = NULL; | |
3551 | vdev_t *rvd; | |
3552 | dsl_pool_t *dp; | |
3553 | dmu_tx_t *tx; | |
9babb374 | 3554 | int error = 0; |
34dc7c2f BB |
3555 | uint64_t txg = TXG_INITIAL; |
3556 | nvlist_t **spares, **l2cache; | |
3557 | uint_t nspares, nl2cache; | |
428870ff | 3558 | uint64_t version, obj; |
9ae529ec CS |
3559 | boolean_t has_features; |
3560 | nvpair_t *elem; | |
e022864d | 3561 | int c, i; |
83e9986f RY |
3562 | char *poolname; |
3563 | nvlist_t *nvl; | |
3564 | ||
3565 | if (nvlist_lookup_string(props, "tname", &poolname) != 0) | |
3566 | poolname = (char *)pool; | |
34dc7c2f BB |
3567 | |
3568 | /* | |
3569 | * If this pool already exists, return failure. | |
3570 | */ | |
3571 | mutex_enter(&spa_namespace_lock); | |
83e9986f | 3572 | if (spa_lookup(poolname) != NULL) { |
34dc7c2f | 3573 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 3574 | return (SET_ERROR(EEXIST)); |
34dc7c2f BB |
3575 | } |
3576 | ||
3577 | /* | |
3578 | * Allocate a new spa_t structure. | |
3579 | */ | |
83e9986f RY |
3580 | nvl = fnvlist_alloc(); |
3581 | fnvlist_add_string(nvl, ZPOOL_CONFIG_POOL_NAME, pool); | |
34dc7c2f BB |
3582 | (void) nvlist_lookup_string(props, |
3583 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
83e9986f RY |
3584 | spa = spa_add(poolname, nvl, altroot); |
3585 | fnvlist_free(nvl); | |
fb5f0bc8 | 3586 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 3587 | |
34dc7c2f | 3588 | if (props && (error = spa_prop_validate(spa, props))) { |
34dc7c2f BB |
3589 | spa_deactivate(spa); |
3590 | spa_remove(spa); | |
b128c09f | 3591 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
3592 | return (error); |
3593 | } | |
3594 | ||
83e9986f RY |
3595 | /* |
3596 | * Temporary pool names should never be written to disk. | |
3597 | */ | |
3598 | if (poolname != pool) | |
3599 | spa->spa_import_flags |= ZFS_IMPORT_TEMP_NAME; | |
3600 | ||
9ae529ec CS |
3601 | has_features = B_FALSE; |
3602 | for (elem = nvlist_next_nvpair(props, NULL); | |
3603 | elem != NULL; elem = nvlist_next_nvpair(props, elem)) { | |
3604 | if (zpool_prop_feature(nvpair_name(elem))) | |
3605 | has_features = B_TRUE; | |
3606 | } | |
3607 | ||
3608 | if (has_features || nvlist_lookup_uint64(props, | |
3609 | zpool_prop_to_name(ZPOOL_PROP_VERSION), &version) != 0) { | |
34dc7c2f | 3610 | version = SPA_VERSION; |
9ae529ec CS |
3611 | } |
3612 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); | |
428870ff BB |
3613 | |
3614 | spa->spa_first_txg = txg; | |
3615 | spa->spa_uberblock.ub_txg = txg - 1; | |
34dc7c2f BB |
3616 | spa->spa_uberblock.ub_version = version; |
3617 | spa->spa_ubsync = spa->spa_uberblock; | |
3618 | ||
9babb374 BB |
3619 | /* |
3620 | * Create "The Godfather" zio to hold all async IOs | |
3621 | */ | |
e022864d MA |
3622 | spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *), |
3623 | KM_SLEEP); | |
3624 | for (i = 0; i < max_ncpus; i++) { | |
3625 | spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, | |
3626 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | | |
3627 | ZIO_FLAG_GODFATHER); | |
3628 | } | |
9babb374 | 3629 | |
34dc7c2f BB |
3630 | /* |
3631 | * Create the root vdev. | |
3632 | */ | |
b128c09f | 3633 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
3634 | |
3635 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); | |
3636 | ||
3637 | ASSERT(error != 0 || rvd != NULL); | |
3638 | ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
3639 | ||
3640 | if (error == 0 && !zfs_allocatable_devs(nvroot)) | |
2e528b49 | 3641 | error = SET_ERROR(EINVAL); |
34dc7c2f BB |
3642 | |
3643 | if (error == 0 && | |
3644 | (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
3645 | (error = spa_validate_aux(spa, nvroot, txg, | |
3646 | VDEV_ALLOC_ADD)) == 0) { | |
d6320ddb | 3647 | for (c = 0; c < rvd->vdev_children; c++) { |
9babb374 BB |
3648 | vdev_metaslab_set_size(rvd->vdev_child[c]); |
3649 | vdev_expand(rvd->vdev_child[c], txg); | |
3650 | } | |
34dc7c2f BB |
3651 | } |
3652 | ||
b128c09f | 3653 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3654 | |
3655 | if (error != 0) { | |
3656 | spa_unload(spa); | |
3657 | spa_deactivate(spa); | |
3658 | spa_remove(spa); | |
3659 | mutex_exit(&spa_namespace_lock); | |
3660 | return (error); | |
3661 | } | |
3662 | ||
3663 | /* | |
3664 | * Get the list of spares, if specified. | |
3665 | */ | |
3666 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
3667 | &spares, &nspares) == 0) { | |
3668 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, | |
79c76d5b | 3669 | KM_SLEEP) == 0); |
34dc7c2f BB |
3670 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
3671 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 3672 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3673 | spa_load_spares(spa); |
b128c09f | 3674 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3675 | spa->spa_spares.sav_sync = B_TRUE; |
3676 | } | |
3677 | ||
3678 | /* | |
3679 | * Get the list of level 2 cache devices, if specified. | |
3680 | */ | |
3681 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
3682 | &l2cache, &nl2cache) == 0) { | |
3683 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
79c76d5b | 3684 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
3685 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
3686 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 3687 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3688 | spa_load_l2cache(spa); |
b128c09f | 3689 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3690 | spa->spa_l2cache.sav_sync = B_TRUE; |
3691 | } | |
3692 | ||
9ae529ec | 3693 | spa->spa_is_initializing = B_TRUE; |
b128c09f | 3694 | spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, txg); |
34dc7c2f | 3695 | spa->spa_meta_objset = dp->dp_meta_objset; |
9ae529ec | 3696 | spa->spa_is_initializing = B_FALSE; |
34dc7c2f | 3697 | |
428870ff BB |
3698 | /* |
3699 | * Create DDTs (dedup tables). | |
3700 | */ | |
3701 | ddt_create(spa); | |
3702 | ||
3703 | spa_update_dspace(spa); | |
3704 | ||
34dc7c2f BB |
3705 | tx = dmu_tx_create_assigned(dp, txg); |
3706 | ||
3707 | /* | |
3708 | * Create the pool config object. | |
3709 | */ | |
3710 | spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
b128c09f | 3711 | DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, |
34dc7c2f BB |
3712 | DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); |
3713 | ||
3714 | if (zap_add(spa->spa_meta_objset, | |
3715 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
3716 | sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { | |
3717 | cmn_err(CE_PANIC, "failed to add pool config"); | |
3718 | } | |
3719 | ||
9ae529ec CS |
3720 | if (spa_version(spa) >= SPA_VERSION_FEATURES) |
3721 | spa_feature_create_zap_objects(spa, tx); | |
3722 | ||
428870ff BB |
3723 | if (zap_add(spa->spa_meta_objset, |
3724 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION, | |
3725 | sizeof (uint64_t), 1, &version, tx) != 0) { | |
3726 | cmn_err(CE_PANIC, "failed to add pool version"); | |
3727 | } | |
3728 | ||
34dc7c2f BB |
3729 | /* Newly created pools with the right version are always deflated. */ |
3730 | if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
3731 | spa->spa_deflate = TRUE; | |
3732 | if (zap_add(spa->spa_meta_objset, | |
3733 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
3734 | sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
3735 | cmn_err(CE_PANIC, "failed to add deflate"); | |
3736 | } | |
3737 | } | |
3738 | ||
3739 | /* | |
428870ff | 3740 | * Create the deferred-free bpobj. Turn off compression |
34dc7c2f BB |
3741 | * because sync-to-convergence takes longer if the blocksize |
3742 | * keeps changing. | |
3743 | */ | |
428870ff BB |
3744 | obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx); |
3745 | dmu_object_set_compress(spa->spa_meta_objset, obj, | |
34dc7c2f | 3746 | ZIO_COMPRESS_OFF, tx); |
34dc7c2f | 3747 | if (zap_add(spa->spa_meta_objset, |
428870ff BB |
3748 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ, |
3749 | sizeof (uint64_t), 1, &obj, tx) != 0) { | |
3750 | cmn_err(CE_PANIC, "failed to add bpobj"); | |
34dc7c2f | 3751 | } |
428870ff BB |
3752 | VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj, |
3753 | spa->spa_meta_objset, obj)); | |
34dc7c2f BB |
3754 | |
3755 | /* | |
3756 | * Create the pool's history object. | |
3757 | */ | |
3758 | if (version >= SPA_VERSION_ZPOOL_HISTORY) | |
3759 | spa_history_create_obj(spa, tx); | |
3760 | ||
3761 | /* | |
3762 | * Set pool properties. | |
3763 | */ | |
3764 | spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
3765 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
3766 | spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); | |
9babb374 | 3767 | spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND); |
428870ff | 3768 | |
d164b209 BB |
3769 | if (props != NULL) { |
3770 | spa_configfile_set(spa, props, B_FALSE); | |
13fe0198 | 3771 | spa_sync_props(props, tx); |
d164b209 | 3772 | } |
34dc7c2f BB |
3773 | |
3774 | dmu_tx_commit(tx); | |
3775 | ||
3776 | spa->spa_sync_on = B_TRUE; | |
3777 | txg_sync_start(spa->spa_dsl_pool); | |
3778 | ||
3779 | /* | |
3780 | * We explicitly wait for the first transaction to complete so that our | |
3781 | * bean counters are appropriately updated. | |
3782 | */ | |
3783 | txg_wait_synced(spa->spa_dsl_pool, txg); | |
3784 | ||
b128c09f | 3785 | spa_config_sync(spa, B_FALSE, B_TRUE); |
34dc7c2f | 3786 | |
6f1ffb06 | 3787 | spa_history_log_version(spa, "create"); |
34dc7c2f | 3788 | |
0c66c32d JG |
3789 | /* |
3790 | * Don't count references from objsets that are already closed | |
3791 | * and are making their way through the eviction process. | |
3792 | */ | |
3793 | spa_evicting_os_wait(spa); | |
b128c09f BB |
3794 | spa->spa_minref = refcount_count(&spa->spa_refcount); |
3795 | ||
d164b209 BB |
3796 | mutex_exit(&spa_namespace_lock); |
3797 | ||
34dc7c2f BB |
3798 | return (0); |
3799 | } | |
3800 | ||
9babb374 | 3801 | #ifdef _KERNEL |
34dc7c2f | 3802 | /* |
9babb374 BB |
3803 | * Get the root pool information from the root disk, then import the root pool |
3804 | * during the system boot up time. | |
34dc7c2f | 3805 | */ |
9babb374 BB |
3806 | extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **); |
3807 | ||
3808 | static nvlist_t * | |
3809 | spa_generate_rootconf(char *devpath, char *devid, uint64_t *guid) | |
3810 | { | |
3811 | nvlist_t *config; | |
3812 | nvlist_t *nvtop, *nvroot; | |
3813 | uint64_t pgid; | |
3814 | ||
3815 | if (vdev_disk_read_rootlabel(devpath, devid, &config) != 0) | |
3816 | return (NULL); | |
3817 | ||
3818 | /* | |
3819 | * Add this top-level vdev to the child array. | |
3820 | */ | |
3821 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3822 | &nvtop) == 0); | |
3823 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
3824 | &pgid) == 0); | |
3825 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, guid) == 0); | |
3826 | ||
3827 | /* | |
3828 | * Put this pool's top-level vdevs into a root vdev. | |
3829 | */ | |
79c76d5b | 3830 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
9babb374 BB |
3831 | VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, |
3832 | VDEV_TYPE_ROOT) == 0); | |
3833 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); | |
3834 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); | |
3835 | VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, | |
3836 | &nvtop, 1) == 0); | |
3837 | ||
3838 | /* | |
3839 | * Replace the existing vdev_tree with the new root vdev in | |
3840 | * this pool's configuration (remove the old, add the new). | |
3841 | */ | |
3842 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); | |
3843 | nvlist_free(nvroot); | |
3844 | return (config); | |
3845 | } | |
3846 | ||
3847 | /* | |
3848 | * Walk the vdev tree and see if we can find a device with "better" | |
3849 | * configuration. A configuration is "better" if the label on that | |
3850 | * device has a more recent txg. | |
3851 | */ | |
3852 | static void | |
3853 | spa_alt_rootvdev(vdev_t *vd, vdev_t **avd, uint64_t *txg) | |
3854 | { | |
d6320ddb BB |
3855 | int c; |
3856 | ||
3857 | for (c = 0; c < vd->vdev_children; c++) | |
9babb374 BB |
3858 | spa_alt_rootvdev(vd->vdev_child[c], avd, txg); |
3859 | ||
3860 | if (vd->vdev_ops->vdev_op_leaf) { | |
3861 | nvlist_t *label; | |
3862 | uint64_t label_txg; | |
3863 | ||
3864 | if (vdev_disk_read_rootlabel(vd->vdev_physpath, vd->vdev_devid, | |
3865 | &label) != 0) | |
3866 | return; | |
3867 | ||
3868 | VERIFY(nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_TXG, | |
3869 | &label_txg) == 0); | |
3870 | ||
3871 | /* | |
3872 | * Do we have a better boot device? | |
3873 | */ | |
3874 | if (label_txg > *txg) { | |
3875 | *txg = label_txg; | |
3876 | *avd = vd; | |
3877 | } | |
3878 | nvlist_free(label); | |
3879 | } | |
3880 | } | |
3881 | ||
3882 | /* | |
3883 | * Import a root pool. | |
3884 | * | |
3885 | * For x86. devpath_list will consist of devid and/or physpath name of | |
3886 | * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a"). | |
3887 | * The GRUB "findroot" command will return the vdev we should boot. | |
3888 | * | |
3889 | * For Sparc, devpath_list consists the physpath name of the booting device | |
3890 | * no matter the rootpool is a single device pool or a mirrored pool. | |
3891 | * e.g. | |
3892 | * "/pci@1f,0/ide@d/disk@0,0:a" | |
3893 | */ | |
3894 | int | |
3895 | spa_import_rootpool(char *devpath, char *devid) | |
3896 | { | |
3897 | spa_t *spa; | |
3898 | vdev_t *rvd, *bvd, *avd = NULL; | |
3899 | nvlist_t *config, *nvtop; | |
3900 | uint64_t guid, txg; | |
3901 | char *pname; | |
3902 | int error; | |
3903 | ||
3904 | /* | |
3905 | * Read the label from the boot device and generate a configuration. | |
3906 | */ | |
428870ff BB |
3907 | config = spa_generate_rootconf(devpath, devid, &guid); |
3908 | #if defined(_OBP) && defined(_KERNEL) | |
3909 | if (config == NULL) { | |
3910 | if (strstr(devpath, "/iscsi/ssd") != NULL) { | |
3911 | /* iscsi boot */ | |
3912 | get_iscsi_bootpath_phy(devpath); | |
3913 | config = spa_generate_rootconf(devpath, devid, &guid); | |
3914 | } | |
3915 | } | |
3916 | #endif | |
3917 | if (config == NULL) { | |
9ae529ec | 3918 | cmn_err(CE_NOTE, "Cannot read the pool label from '%s'", |
9babb374 | 3919 | devpath); |
2e528b49 | 3920 | return (SET_ERROR(EIO)); |
9babb374 BB |
3921 | } |
3922 | ||
3923 | VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, | |
3924 | &pname) == 0); | |
3925 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0); | |
3926 | ||
3927 | mutex_enter(&spa_namespace_lock); | |
3928 | if ((spa = spa_lookup(pname)) != NULL) { | |
3929 | /* | |
3930 | * Remove the existing root pool from the namespace so that we | |
3931 | * can replace it with the correct config we just read in. | |
3932 | */ | |
3933 | spa_remove(spa); | |
3934 | } | |
3935 | ||
428870ff | 3936 | spa = spa_add(pname, config, NULL); |
9babb374 | 3937 | spa->spa_is_root = B_TRUE; |
572e2857 | 3938 | spa->spa_import_flags = ZFS_IMPORT_VERBATIM; |
9babb374 BB |
3939 | |
3940 | /* | |
3941 | * Build up a vdev tree based on the boot device's label config. | |
3942 | */ | |
3943 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3944 | &nvtop) == 0); | |
3945 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3946 | error = spa_config_parse(spa, &rvd, nvtop, NULL, 0, | |
3947 | VDEV_ALLOC_ROOTPOOL); | |
3948 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3949 | if (error) { | |
3950 | mutex_exit(&spa_namespace_lock); | |
3951 | nvlist_free(config); | |
3952 | cmn_err(CE_NOTE, "Can not parse the config for pool '%s'", | |
3953 | pname); | |
3954 | return (error); | |
3955 | } | |
3956 | ||
3957 | /* | |
3958 | * Get the boot vdev. | |
3959 | */ | |
3960 | if ((bvd = vdev_lookup_by_guid(rvd, guid)) == NULL) { | |
3961 | cmn_err(CE_NOTE, "Can not find the boot vdev for guid %llu", | |
3962 | (u_longlong_t)guid); | |
2e528b49 | 3963 | error = SET_ERROR(ENOENT); |
9babb374 BB |
3964 | goto out; |
3965 | } | |
3966 | ||
3967 | /* | |
3968 | * Determine if there is a better boot device. | |
3969 | */ | |
3970 | avd = bvd; | |
3971 | spa_alt_rootvdev(rvd, &avd, &txg); | |
3972 | if (avd != bvd) { | |
3973 | cmn_err(CE_NOTE, "The boot device is 'degraded'. Please " | |
3974 | "try booting from '%s'", avd->vdev_path); | |
2e528b49 | 3975 | error = SET_ERROR(EINVAL); |
9babb374 BB |
3976 | goto out; |
3977 | } | |
3978 | ||
3979 | /* | |
3980 | * If the boot device is part of a spare vdev then ensure that | |
3981 | * we're booting off the active spare. | |
3982 | */ | |
3983 | if (bvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3984 | !bvd->vdev_isspare) { | |
3985 | cmn_err(CE_NOTE, "The boot device is currently spared. Please " | |
3986 | "try booting from '%s'", | |
572e2857 BB |
3987 | bvd->vdev_parent-> |
3988 | vdev_child[bvd->vdev_parent->vdev_children - 1]->vdev_path); | |
2e528b49 | 3989 | error = SET_ERROR(EINVAL); |
9babb374 BB |
3990 | goto out; |
3991 | } | |
3992 | ||
9babb374 BB |
3993 | error = 0; |
3994 | out: | |
3995 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3996 | vdev_free(rvd); | |
3997 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3998 | mutex_exit(&spa_namespace_lock); | |
3999 | ||
4000 | nvlist_free(config); | |
4001 | return (error); | |
4002 | } | |
4003 | ||
4004 | #endif | |
4005 | ||
9babb374 BB |
4006 | /* |
4007 | * Import a non-root pool into the system. | |
4008 | */ | |
4009 | int | |
13fe0198 | 4010 | spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) |
34dc7c2f BB |
4011 | { |
4012 | spa_t *spa; | |
4013 | char *altroot = NULL; | |
428870ff BB |
4014 | spa_load_state_t state = SPA_LOAD_IMPORT; |
4015 | zpool_rewind_policy_t policy; | |
572e2857 BB |
4016 | uint64_t mode = spa_mode_global; |
4017 | uint64_t readonly = B_FALSE; | |
9babb374 | 4018 | int error; |
34dc7c2f BB |
4019 | nvlist_t *nvroot; |
4020 | nvlist_t **spares, **l2cache; | |
4021 | uint_t nspares, nl2cache; | |
34dc7c2f BB |
4022 | |
4023 | /* | |
4024 | * If a pool with this name exists, return failure. | |
4025 | */ | |
4026 | mutex_enter(&spa_namespace_lock); | |
428870ff | 4027 | if (spa_lookup(pool) != NULL) { |
9babb374 | 4028 | mutex_exit(&spa_namespace_lock); |
2e528b49 | 4029 | return (SET_ERROR(EEXIST)); |
34dc7c2f BB |
4030 | } |
4031 | ||
4032 | /* | |
4033 | * Create and initialize the spa structure. | |
4034 | */ | |
4035 | (void) nvlist_lookup_string(props, | |
4036 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
572e2857 BB |
4037 | (void) nvlist_lookup_uint64(props, |
4038 | zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly); | |
4039 | if (readonly) | |
4040 | mode = FREAD; | |
428870ff | 4041 | spa = spa_add(pool, config, altroot); |
572e2857 BB |
4042 | spa->spa_import_flags = flags; |
4043 | ||
4044 | /* | |
4045 | * Verbatim import - Take a pool and insert it into the namespace | |
4046 | * as if it had been loaded at boot. | |
4047 | */ | |
4048 | if (spa->spa_import_flags & ZFS_IMPORT_VERBATIM) { | |
4049 | if (props != NULL) | |
4050 | spa_configfile_set(spa, props, B_FALSE); | |
4051 | ||
4052 | spa_config_sync(spa, B_FALSE, B_TRUE); | |
4053 | ||
4054 | mutex_exit(&spa_namespace_lock); | |
572e2857 BB |
4055 | return (0); |
4056 | } | |
4057 | ||
4058 | spa_activate(spa, mode); | |
34dc7c2f | 4059 | |
9babb374 BB |
4060 | /* |
4061 | * Don't start async tasks until we know everything is healthy. | |
4062 | */ | |
4063 | spa_async_suspend(spa); | |
b128c09f | 4064 | |
572e2857 BB |
4065 | zpool_get_rewind_policy(config, &policy); |
4066 | if (policy.zrp_request & ZPOOL_DO_REWIND) | |
4067 | state = SPA_LOAD_RECOVER; | |
4068 | ||
34dc7c2f | 4069 | /* |
9babb374 BB |
4070 | * Pass off the heavy lifting to spa_load(). Pass TRUE for mosconfig |
4071 | * because the user-supplied config is actually the one to trust when | |
b128c09f | 4072 | * doing an import. |
34dc7c2f | 4073 | */ |
428870ff BB |
4074 | if (state != SPA_LOAD_RECOVER) |
4075 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
572e2857 | 4076 | |
428870ff BB |
4077 | error = spa_load_best(spa, state, B_TRUE, policy.zrp_txg, |
4078 | policy.zrp_request); | |
4079 | ||
4080 | /* | |
572e2857 BB |
4081 | * Propagate anything learned while loading the pool and pass it |
4082 | * back to caller (i.e. rewind info, missing devices, etc). | |
428870ff | 4083 | */ |
572e2857 BB |
4084 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
4085 | spa->spa_load_info) == 0); | |
34dc7c2f | 4086 | |
b128c09f | 4087 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4088 | /* |
9babb374 BB |
4089 | * Toss any existing sparelist, as it doesn't have any validity |
4090 | * anymore, and conflicts with spa_has_spare(). | |
34dc7c2f | 4091 | */ |
9babb374 | 4092 | if (spa->spa_spares.sav_config) { |
34dc7c2f BB |
4093 | nvlist_free(spa->spa_spares.sav_config); |
4094 | spa->spa_spares.sav_config = NULL; | |
4095 | spa_load_spares(spa); | |
4096 | } | |
9babb374 | 4097 | if (spa->spa_l2cache.sav_config) { |
34dc7c2f BB |
4098 | nvlist_free(spa->spa_l2cache.sav_config); |
4099 | spa->spa_l2cache.sav_config = NULL; | |
4100 | spa_load_l2cache(spa); | |
4101 | } | |
4102 | ||
4103 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
4104 | &nvroot) == 0); | |
4105 | if (error == 0) | |
9babb374 BB |
4106 | error = spa_validate_aux(spa, nvroot, -1ULL, |
4107 | VDEV_ALLOC_SPARE); | |
34dc7c2f BB |
4108 | if (error == 0) |
4109 | error = spa_validate_aux(spa, nvroot, -1ULL, | |
4110 | VDEV_ALLOC_L2CACHE); | |
b128c09f | 4111 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 4112 | |
d164b209 BB |
4113 | if (props != NULL) |
4114 | spa_configfile_set(spa, props, B_FALSE); | |
4115 | ||
fb5f0bc8 BB |
4116 | if (error != 0 || (props && spa_writeable(spa) && |
4117 | (error = spa_prop_set(spa, props)))) { | |
9babb374 BB |
4118 | spa_unload(spa); |
4119 | spa_deactivate(spa); | |
4120 | spa_remove(spa); | |
34dc7c2f BB |
4121 | mutex_exit(&spa_namespace_lock); |
4122 | return (error); | |
4123 | } | |
4124 | ||
572e2857 BB |
4125 | spa_async_resume(spa); |
4126 | ||
34dc7c2f BB |
4127 | /* |
4128 | * Override any spares and level 2 cache devices as specified by | |
4129 | * the user, as these may have correct device names/devids, etc. | |
4130 | */ | |
4131 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
4132 | &spares, &nspares) == 0) { | |
4133 | if (spa->spa_spares.sav_config) | |
4134 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
4135 | ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
4136 | else | |
4137 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, | |
79c76d5b | 4138 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
4139 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
4140 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 4141 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4142 | spa_load_spares(spa); |
b128c09f | 4143 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
4144 | spa->spa_spares.sav_sync = B_TRUE; |
4145 | } | |
4146 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
4147 | &l2cache, &nl2cache) == 0) { | |
4148 | if (spa->spa_l2cache.sav_config) | |
4149 | VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
4150 | ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
4151 | else | |
4152 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
79c76d5b | 4153 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
4154 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
4155 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 4156 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4157 | spa_load_l2cache(spa); |
b128c09f | 4158 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
4159 | spa->spa_l2cache.sav_sync = B_TRUE; |
4160 | } | |
4161 | ||
428870ff BB |
4162 | /* |
4163 | * Check for any removed devices. | |
4164 | */ | |
4165 | if (spa->spa_autoreplace) { | |
4166 | spa_aux_check_removed(&spa->spa_spares); | |
4167 | spa_aux_check_removed(&spa->spa_l2cache); | |
4168 | } | |
4169 | ||
fb5f0bc8 | 4170 | if (spa_writeable(spa)) { |
b128c09f BB |
4171 | /* |
4172 | * Update the config cache to include the newly-imported pool. | |
4173 | */ | |
45d1cae3 | 4174 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
b128c09f | 4175 | } |
34dc7c2f | 4176 | |
34dc7c2f | 4177 | /* |
9babb374 BB |
4178 | * It's possible that the pool was expanded while it was exported. |
4179 | * We kick off an async task to handle this for us. | |
34dc7c2f | 4180 | */ |
9babb374 | 4181 | spa_async_request(spa, SPA_ASYNC_AUTOEXPAND); |
b128c09f | 4182 | |
9babb374 | 4183 | mutex_exit(&spa_namespace_lock); |
6f1ffb06 | 4184 | spa_history_log_version(spa, "import"); |
b128c09f | 4185 | |
526af785 PJD |
4186 | #ifdef _KERNEL |
4187 | zvol_create_minors(pool); | |
4188 | #endif | |
4189 | ||
b128c09f BB |
4190 | return (0); |
4191 | } | |
4192 | ||
34dc7c2f BB |
4193 | nvlist_t * |
4194 | spa_tryimport(nvlist_t *tryconfig) | |
4195 | { | |
4196 | nvlist_t *config = NULL; | |
4197 | char *poolname; | |
4198 | spa_t *spa; | |
4199 | uint64_t state; | |
d164b209 | 4200 | int error; |
34dc7c2f BB |
4201 | |
4202 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
4203 | return (NULL); | |
4204 | ||
4205 | if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
4206 | return (NULL); | |
4207 | ||
4208 | /* | |
4209 | * Create and initialize the spa structure. | |
4210 | */ | |
4211 | mutex_enter(&spa_namespace_lock); | |
428870ff | 4212 | spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL); |
fb5f0bc8 | 4213 | spa_activate(spa, FREAD); |
34dc7c2f BB |
4214 | |
4215 | /* | |
4216 | * Pass off the heavy lifting to spa_load(). | |
4217 | * Pass TRUE for mosconfig because the user-supplied config | |
4218 | * is actually the one to trust when doing an import. | |
4219 | */ | |
428870ff | 4220 | error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING, B_TRUE); |
34dc7c2f BB |
4221 | |
4222 | /* | |
4223 | * If 'tryconfig' was at least parsable, return the current config. | |
4224 | */ | |
4225 | if (spa->spa_root_vdev != NULL) { | |
34dc7c2f | 4226 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
4227 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
4228 | poolname) == 0); | |
4229 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
4230 | state) == 0); | |
4231 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
4232 | spa->spa_uberblock.ub_timestamp) == 0); | |
9ae529ec CS |
4233 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
4234 | spa->spa_load_info) == 0); | |
ffe9d382 BB |
4235 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_ERRATA, |
4236 | spa->spa_errata) == 0); | |
34dc7c2f BB |
4237 | |
4238 | /* | |
4239 | * If the bootfs property exists on this pool then we | |
4240 | * copy it out so that external consumers can tell which | |
4241 | * pools are bootable. | |
4242 | */ | |
d164b209 | 4243 | if ((!error || error == EEXIST) && spa->spa_bootfs) { |
79c76d5b | 4244 | char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
34dc7c2f BB |
4245 | |
4246 | /* | |
4247 | * We have to play games with the name since the | |
4248 | * pool was opened as TRYIMPORT_NAME. | |
4249 | */ | |
b128c09f | 4250 | if (dsl_dsobj_to_dsname(spa_name(spa), |
34dc7c2f BB |
4251 | spa->spa_bootfs, tmpname) == 0) { |
4252 | char *cp; | |
d1d7e268 MK |
4253 | char *dsname; |
4254 | ||
79c76d5b | 4255 | dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
34dc7c2f BB |
4256 | |
4257 | cp = strchr(tmpname, '/'); | |
4258 | if (cp == NULL) { | |
4259 | (void) strlcpy(dsname, tmpname, | |
4260 | MAXPATHLEN); | |
4261 | } else { | |
4262 | (void) snprintf(dsname, MAXPATHLEN, | |
4263 | "%s/%s", poolname, ++cp); | |
4264 | } | |
4265 | VERIFY(nvlist_add_string(config, | |
4266 | ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
4267 | kmem_free(dsname, MAXPATHLEN); | |
4268 | } | |
4269 | kmem_free(tmpname, MAXPATHLEN); | |
4270 | } | |
4271 | ||
4272 | /* | |
4273 | * Add the list of hot spares and level 2 cache devices. | |
4274 | */ | |
9babb374 | 4275 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
4276 | spa_add_spares(spa, config); |
4277 | spa_add_l2cache(spa, config); | |
9babb374 | 4278 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
4279 | } |
4280 | ||
4281 | spa_unload(spa); | |
4282 | spa_deactivate(spa); | |
4283 | spa_remove(spa); | |
4284 | mutex_exit(&spa_namespace_lock); | |
4285 | ||
4286 | return (config); | |
4287 | } | |
4288 | ||
4289 | /* | |
4290 | * Pool export/destroy | |
4291 | * | |
4292 | * The act of destroying or exporting a pool is very simple. We make sure there | |
4293 | * is no more pending I/O and any references to the pool are gone. Then, we | |
4294 | * update the pool state and sync all the labels to disk, removing the | |
fb5f0bc8 BB |
4295 | * configuration from the cache afterwards. If the 'hardforce' flag is set, then |
4296 | * we don't sync the labels or remove the configuration cache. | |
34dc7c2f BB |
4297 | */ |
4298 | static int | |
b128c09f | 4299 | spa_export_common(char *pool, int new_state, nvlist_t **oldconfig, |
fb5f0bc8 | 4300 | boolean_t force, boolean_t hardforce) |
34dc7c2f BB |
4301 | { |
4302 | spa_t *spa; | |
4303 | ||
4304 | if (oldconfig) | |
4305 | *oldconfig = NULL; | |
4306 | ||
fb5f0bc8 | 4307 | if (!(spa_mode_global & FWRITE)) |
2e528b49 | 4308 | return (SET_ERROR(EROFS)); |
34dc7c2f BB |
4309 | |
4310 | mutex_enter(&spa_namespace_lock); | |
4311 | if ((spa = spa_lookup(pool)) == NULL) { | |
4312 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 4313 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
4314 | } |
4315 | ||
4316 | /* | |
4317 | * Put a hold on the pool, drop the namespace lock, stop async tasks, | |
4318 | * reacquire the namespace lock, and see if we can export. | |
4319 | */ | |
4320 | spa_open_ref(spa, FTAG); | |
4321 | mutex_exit(&spa_namespace_lock); | |
4322 | spa_async_suspend(spa); | |
4323 | mutex_enter(&spa_namespace_lock); | |
4324 | spa_close(spa, FTAG); | |
4325 | ||
d14cfd83 IH |
4326 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) |
4327 | goto export_spa; | |
34dc7c2f | 4328 | /* |
d14cfd83 IH |
4329 | * The pool will be in core if it's openable, in which case we can |
4330 | * modify its state. Objsets may be open only because they're dirty, | |
4331 | * so we have to force it to sync before checking spa_refcnt. | |
34dc7c2f | 4332 | */ |
0c66c32d | 4333 | if (spa->spa_sync_on) { |
34dc7c2f | 4334 | txg_wait_synced(spa->spa_dsl_pool, 0); |
0c66c32d JG |
4335 | spa_evicting_os_wait(spa); |
4336 | } | |
34dc7c2f | 4337 | |
d14cfd83 IH |
4338 | /* |
4339 | * A pool cannot be exported or destroyed if there are active | |
4340 | * references. If we are resetting a pool, allow references by | |
4341 | * fault injection handlers. | |
4342 | */ | |
4343 | if (!spa_refcount_zero(spa) || | |
4344 | (spa->spa_inject_ref != 0 && | |
4345 | new_state != POOL_STATE_UNINITIALIZED)) { | |
4346 | spa_async_resume(spa); | |
4347 | mutex_exit(&spa_namespace_lock); | |
4348 | return (SET_ERROR(EBUSY)); | |
4349 | } | |
34dc7c2f | 4350 | |
d14cfd83 | 4351 | if (spa->spa_sync_on) { |
b128c09f BB |
4352 | /* |
4353 | * A pool cannot be exported if it has an active shared spare. | |
4354 | * This is to prevent other pools stealing the active spare | |
4355 | * from an exported pool. At user's own will, such pool can | |
4356 | * be forcedly exported. | |
4357 | */ | |
4358 | if (!force && new_state == POOL_STATE_EXPORTED && | |
4359 | spa_has_active_shared_spare(spa)) { | |
4360 | spa_async_resume(spa); | |
4361 | mutex_exit(&spa_namespace_lock); | |
2e528b49 | 4362 | return (SET_ERROR(EXDEV)); |
b128c09f | 4363 | } |
34dc7c2f BB |
4364 | |
4365 | /* | |
4366 | * We want this to be reflected on every label, | |
4367 | * so mark them all dirty. spa_unload() will do the | |
4368 | * final sync that pushes these changes out. | |
4369 | */ | |
fb5f0bc8 | 4370 | if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { |
b128c09f | 4371 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4372 | spa->spa_state = new_state; |
428870ff BB |
4373 | spa->spa_final_txg = spa_last_synced_txg(spa) + |
4374 | TXG_DEFER_SIZE + 1; | |
34dc7c2f | 4375 | vdev_config_dirty(spa->spa_root_vdev); |
b128c09f | 4376 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
4377 | } |
4378 | } | |
4379 | ||
d14cfd83 | 4380 | export_spa: |
26685276 | 4381 | spa_event_notify(spa, NULL, FM_EREPORT_ZFS_POOL_DESTROY); |
34dc7c2f BB |
4382 | |
4383 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
4384 | spa_unload(spa); | |
4385 | spa_deactivate(spa); | |
4386 | } | |
4387 | ||
4388 | if (oldconfig && spa->spa_config) | |
4389 | VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); | |
4390 | ||
4391 | if (new_state != POOL_STATE_UNINITIALIZED) { | |
fb5f0bc8 BB |
4392 | if (!hardforce) |
4393 | spa_config_sync(spa, B_TRUE, B_TRUE); | |
34dc7c2f | 4394 | spa_remove(spa); |
34dc7c2f BB |
4395 | } |
4396 | mutex_exit(&spa_namespace_lock); | |
4397 | ||
4398 | return (0); | |
4399 | } | |
4400 | ||
4401 | /* | |
4402 | * Destroy a storage pool. | |
4403 | */ | |
4404 | int | |
4405 | spa_destroy(char *pool) | |
4406 | { | |
fb5f0bc8 BB |
4407 | return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, |
4408 | B_FALSE, B_FALSE)); | |
34dc7c2f BB |
4409 | } |
4410 | ||
4411 | /* | |
4412 | * Export a storage pool. | |
4413 | */ | |
4414 | int | |
fb5f0bc8 BB |
4415 | spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
4416 | boolean_t hardforce) | |
34dc7c2f | 4417 | { |
fb5f0bc8 BB |
4418 | return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, |
4419 | force, hardforce)); | |
34dc7c2f BB |
4420 | } |
4421 | ||
4422 | /* | |
4423 | * Similar to spa_export(), this unloads the spa_t without actually removing it | |
4424 | * from the namespace in any way. | |
4425 | */ | |
4426 | int | |
4427 | spa_reset(char *pool) | |
4428 | { | |
b128c09f | 4429 | return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, |
fb5f0bc8 | 4430 | B_FALSE, B_FALSE)); |
34dc7c2f BB |
4431 | } |
4432 | ||
34dc7c2f BB |
4433 | /* |
4434 | * ========================================================================== | |
4435 | * Device manipulation | |
4436 | * ========================================================================== | |
4437 | */ | |
4438 | ||
4439 | /* | |
4440 | * Add a device to a storage pool. | |
4441 | */ | |
4442 | int | |
4443 | spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
4444 | { | |
428870ff | 4445 | uint64_t txg, id; |
fb5f0bc8 | 4446 | int error; |
34dc7c2f BB |
4447 | vdev_t *rvd = spa->spa_root_vdev; |
4448 | vdev_t *vd, *tvd; | |
4449 | nvlist_t **spares, **l2cache; | |
4450 | uint_t nspares, nl2cache; | |
d6320ddb | 4451 | int c; |
34dc7c2f | 4452 | |
572e2857 BB |
4453 | ASSERT(spa_writeable(spa)); |
4454 | ||
34dc7c2f BB |
4455 | txg = spa_vdev_enter(spa); |
4456 | ||
4457 | if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, | |
4458 | VDEV_ALLOC_ADD)) != 0) | |
4459 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4460 | ||
b128c09f | 4461 | spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ |
34dc7c2f BB |
4462 | |
4463 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, | |
4464 | &nspares) != 0) | |
4465 | nspares = 0; | |
4466 | ||
4467 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, | |
4468 | &nl2cache) != 0) | |
4469 | nl2cache = 0; | |
4470 | ||
b128c09f | 4471 | if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) |
34dc7c2f | 4472 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
34dc7c2f | 4473 | |
b128c09f BB |
4474 | if (vd->vdev_children != 0 && |
4475 | (error = vdev_create(vd, txg, B_FALSE)) != 0) | |
4476 | return (spa_vdev_exit(spa, vd, txg, error)); | |
34dc7c2f BB |
4477 | |
4478 | /* | |
4479 | * We must validate the spares and l2cache devices after checking the | |
4480 | * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
4481 | */ | |
b128c09f | 4482 | if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) |
34dc7c2f | 4483 | return (spa_vdev_exit(spa, vd, txg, error)); |
34dc7c2f BB |
4484 | |
4485 | /* | |
4486 | * Transfer each new top-level vdev from vd to rvd. | |
4487 | */ | |
d6320ddb | 4488 | for (c = 0; c < vd->vdev_children; c++) { |
428870ff BB |
4489 | |
4490 | /* | |
4491 | * Set the vdev id to the first hole, if one exists. | |
4492 | */ | |
4493 | for (id = 0; id < rvd->vdev_children; id++) { | |
4494 | if (rvd->vdev_child[id]->vdev_ishole) { | |
4495 | vdev_free(rvd->vdev_child[id]); | |
4496 | break; | |
4497 | } | |
4498 | } | |
34dc7c2f BB |
4499 | tvd = vd->vdev_child[c]; |
4500 | vdev_remove_child(vd, tvd); | |
428870ff | 4501 | tvd->vdev_id = id; |
34dc7c2f BB |
4502 | vdev_add_child(rvd, tvd); |
4503 | vdev_config_dirty(tvd); | |
4504 | } | |
4505 | ||
4506 | if (nspares != 0) { | |
4507 | spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, | |
4508 | ZPOOL_CONFIG_SPARES); | |
4509 | spa_load_spares(spa); | |
4510 | spa->spa_spares.sav_sync = B_TRUE; | |
4511 | } | |
4512 | ||
4513 | if (nl2cache != 0) { | |
4514 | spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
4515 | ZPOOL_CONFIG_L2CACHE); | |
4516 | spa_load_l2cache(spa); | |
4517 | spa->spa_l2cache.sav_sync = B_TRUE; | |
4518 | } | |
4519 | ||
4520 | /* | |
4521 | * We have to be careful when adding new vdevs to an existing pool. | |
4522 | * If other threads start allocating from these vdevs before we | |
4523 | * sync the config cache, and we lose power, then upon reboot we may | |
4524 | * fail to open the pool because there are DVAs that the config cache | |
4525 | * can't translate. Therefore, we first add the vdevs without | |
4526 | * initializing metaslabs; sync the config cache (via spa_vdev_exit()); | |
4527 | * and then let spa_config_update() initialize the new metaslabs. | |
4528 | * | |
4529 | * spa_load() checks for added-but-not-initialized vdevs, so that | |
4530 | * if we lose power at any point in this sequence, the remaining | |
4531 | * steps will be completed the next time we load the pool. | |
4532 | */ | |
4533 | (void) spa_vdev_exit(spa, vd, txg, 0); | |
4534 | ||
4535 | mutex_enter(&spa_namespace_lock); | |
4536 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
4537 | mutex_exit(&spa_namespace_lock); | |
4538 | ||
4539 | return (0); | |
4540 | } | |
4541 | ||
4542 | /* | |
4543 | * Attach a device to a mirror. The arguments are the path to any device | |
4544 | * in the mirror, and the nvroot for the new device. If the path specifies | |
4545 | * a device that is not mirrored, we automatically insert the mirror vdev. | |
4546 | * | |
4547 | * If 'replacing' is specified, the new device is intended to replace the | |
4548 | * existing device; in this case the two devices are made into their own | |
4549 | * mirror using the 'replacing' vdev, which is functionally identical to | |
4550 | * the mirror vdev (it actually reuses all the same ops) but has a few | |
4551 | * extra rules: you can't attach to it after it's been created, and upon | |
4552 | * completion of resilvering, the first disk (the one being replaced) | |
4553 | * is automatically detached. | |
4554 | */ | |
4555 | int | |
4556 | spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) | |
4557 | { | |
428870ff | 4558 | uint64_t txg, dtl_max_txg; |
34dc7c2f BB |
4559 | vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; |
4560 | vdev_ops_t *pvops; | |
b128c09f BB |
4561 | char *oldvdpath, *newvdpath; |
4562 | int newvd_isspare; | |
4563 | int error; | |
2e528b49 | 4564 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev); |
34dc7c2f | 4565 | |
572e2857 BB |
4566 | ASSERT(spa_writeable(spa)); |
4567 | ||
34dc7c2f BB |
4568 | txg = spa_vdev_enter(spa); |
4569 | ||
b128c09f | 4570 | oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
4571 | |
4572 | if (oldvd == NULL) | |
4573 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
4574 | ||
4575 | if (!oldvd->vdev_ops->vdev_op_leaf) | |
4576 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
4577 | ||
4578 | pvd = oldvd->vdev_parent; | |
4579 | ||
4580 | if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, | |
5ffb9d1d | 4581 | VDEV_ALLOC_ATTACH)) != 0) |
34dc7c2f BB |
4582 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); |
4583 | ||
4584 | if (newrootvd->vdev_children != 1) | |
4585 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
4586 | ||
4587 | newvd = newrootvd->vdev_child[0]; | |
4588 | ||
4589 | if (!newvd->vdev_ops->vdev_op_leaf) | |
4590 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
4591 | ||
4592 | if ((error = vdev_create(newrootvd, txg, replacing)) != 0) | |
4593 | return (spa_vdev_exit(spa, newrootvd, txg, error)); | |
4594 | ||
4595 | /* | |
4596 | * Spares can't replace logs | |
4597 | */ | |
b128c09f | 4598 | if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) |
34dc7c2f BB |
4599 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
4600 | ||
4601 | if (!replacing) { | |
4602 | /* | |
4603 | * For attach, the only allowable parent is a mirror or the root | |
4604 | * vdev. | |
4605 | */ | |
4606 | if (pvd->vdev_ops != &vdev_mirror_ops && | |
4607 | pvd->vdev_ops != &vdev_root_ops) | |
4608 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
4609 | ||
4610 | pvops = &vdev_mirror_ops; | |
4611 | } else { | |
4612 | /* | |
4613 | * Active hot spares can only be replaced by inactive hot | |
4614 | * spares. | |
4615 | */ | |
4616 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 | 4617 | oldvd->vdev_isspare && |
34dc7c2f BB |
4618 | !spa_has_spare(spa, newvd->vdev_guid)) |
4619 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
4620 | ||
4621 | /* | |
4622 | * If the source is a hot spare, and the parent isn't already a | |
4623 | * spare, then we want to create a new hot spare. Otherwise, we | |
4624 | * want to create a replacing vdev. The user is not allowed to | |
4625 | * attach to a spared vdev child unless the 'isspare' state is | |
4626 | * the same (spare replaces spare, non-spare replaces | |
4627 | * non-spare). | |
4628 | */ | |
572e2857 BB |
4629 | if (pvd->vdev_ops == &vdev_replacing_ops && |
4630 | spa_version(spa) < SPA_VERSION_MULTI_REPLACE) { | |
34dc7c2f | 4631 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
4632 | } else if (pvd->vdev_ops == &vdev_spare_ops && |
4633 | newvd->vdev_isspare != oldvd->vdev_isspare) { | |
34dc7c2f | 4634 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
4635 | } |
4636 | ||
4637 | if (newvd->vdev_isspare) | |
34dc7c2f BB |
4638 | pvops = &vdev_spare_ops; |
4639 | else | |
4640 | pvops = &vdev_replacing_ops; | |
4641 | } | |
4642 | ||
4643 | /* | |
9babb374 | 4644 | * Make sure the new device is big enough. |
34dc7c2f | 4645 | */ |
9babb374 | 4646 | if (newvd->vdev_asize < vdev_get_min_asize(oldvd)) |
34dc7c2f BB |
4647 | return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
4648 | ||
4649 | /* | |
4650 | * The new device cannot have a higher alignment requirement | |
4651 | * than the top-level vdev. | |
4652 | */ | |
4653 | if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
4654 | return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); | |
4655 | ||
4656 | /* | |
4657 | * If this is an in-place replacement, update oldvd's path and devid | |
4658 | * to make it distinguishable from newvd, and unopenable from now on. | |
4659 | */ | |
4660 | if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
4661 | spa_strfree(oldvd->vdev_path); | |
4662 | oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
79c76d5b | 4663 | KM_SLEEP); |
34dc7c2f BB |
4664 | (void) sprintf(oldvd->vdev_path, "%s/%s", |
4665 | newvd->vdev_path, "old"); | |
4666 | if (oldvd->vdev_devid != NULL) { | |
4667 | spa_strfree(oldvd->vdev_devid); | |
4668 | oldvd->vdev_devid = NULL; | |
4669 | } | |
4670 | } | |
4671 | ||
572e2857 | 4672 | /* mark the device being resilvered */ |
5d1f7fb6 | 4673 | newvd->vdev_resilver_txg = txg; |
572e2857 | 4674 | |
34dc7c2f BB |
4675 | /* |
4676 | * If the parent is not a mirror, or if we're replacing, insert the new | |
4677 | * mirror/replacing/spare vdev above oldvd. | |
4678 | */ | |
4679 | if (pvd->vdev_ops != pvops) | |
4680 | pvd = vdev_add_parent(oldvd, pvops); | |
4681 | ||
4682 | ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
4683 | ASSERT(pvd->vdev_ops == pvops); | |
4684 | ASSERT(oldvd->vdev_parent == pvd); | |
4685 | ||
4686 | /* | |
4687 | * Extract the new device from its root and add it to pvd. | |
4688 | */ | |
4689 | vdev_remove_child(newrootvd, newvd); | |
4690 | newvd->vdev_id = pvd->vdev_children; | |
428870ff | 4691 | newvd->vdev_crtxg = oldvd->vdev_crtxg; |
34dc7c2f BB |
4692 | vdev_add_child(pvd, newvd); |
4693 | ||
34dc7c2f BB |
4694 | tvd = newvd->vdev_top; |
4695 | ASSERT(pvd->vdev_top == tvd); | |
4696 | ASSERT(tvd->vdev_parent == rvd); | |
4697 | ||
4698 | vdev_config_dirty(tvd); | |
4699 | ||
4700 | /* | |
428870ff BB |
4701 | * Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account |
4702 | * for any dmu_sync-ed blocks. It will propagate upward when | |
4703 | * spa_vdev_exit() calls vdev_dtl_reassess(). | |
34dc7c2f | 4704 | */ |
428870ff | 4705 | dtl_max_txg = txg + TXG_CONCURRENT_STATES; |
34dc7c2f | 4706 | |
428870ff BB |
4707 | vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL, |
4708 | dtl_max_txg - TXG_INITIAL); | |
34dc7c2f | 4709 | |
9babb374 | 4710 | if (newvd->vdev_isspare) { |
34dc7c2f | 4711 | spa_spare_activate(newvd); |
26685276 | 4712 | spa_event_notify(spa, newvd, FM_EREPORT_ZFS_DEVICE_SPARE); |
9babb374 BB |
4713 | } |
4714 | ||
b128c09f BB |
4715 | oldvdpath = spa_strdup(oldvd->vdev_path); |
4716 | newvdpath = spa_strdup(newvd->vdev_path); | |
4717 | newvd_isspare = newvd->vdev_isspare; | |
34dc7c2f BB |
4718 | |
4719 | /* | |
4720 | * Mark newvd's DTL dirty in this txg. | |
4721 | */ | |
4722 | vdev_dirty(tvd, VDD_DTL, newvd, txg); | |
4723 | ||
428870ff | 4724 | /* |
93cf2076 GW |
4725 | * Schedule the resilver to restart in the future. We do this to |
4726 | * ensure that dmu_sync-ed blocks have been stitched into the | |
4727 | * respective datasets. | |
428870ff BB |
4728 | */ |
4729 | dsl_resilver_restart(spa->spa_dsl_pool, dtl_max_txg); | |
4730 | ||
4731 | /* | |
4732 | * Commit the config | |
4733 | */ | |
4734 | (void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0); | |
34dc7c2f | 4735 | |
6f1ffb06 | 4736 | spa_history_log_internal(spa, "vdev attach", NULL, |
428870ff | 4737 | "%s vdev=%s %s vdev=%s", |
45d1cae3 BB |
4738 | replacing && newvd_isspare ? "spare in" : |
4739 | replacing ? "replace" : "attach", newvdpath, | |
4740 | replacing ? "for" : "to", oldvdpath); | |
b128c09f BB |
4741 | |
4742 | spa_strfree(oldvdpath); | |
4743 | spa_strfree(newvdpath); | |
4744 | ||
572e2857 | 4745 | if (spa->spa_bootfs) |
26685276 | 4746 | spa_event_notify(spa, newvd, FM_EREPORT_ZFS_BOOTFS_VDEV_ATTACH); |
572e2857 | 4747 | |
34dc7c2f BB |
4748 | return (0); |
4749 | } | |
4750 | ||
4751 | /* | |
4752 | * Detach a device from a mirror or replacing vdev. | |
d3cc8b15 | 4753 | * |
34dc7c2f BB |
4754 | * If 'replace_done' is specified, only detach if the parent |
4755 | * is a replacing vdev. | |
4756 | */ | |
4757 | int | |
fb5f0bc8 | 4758 | spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) |
34dc7c2f BB |
4759 | { |
4760 | uint64_t txg; | |
fb5f0bc8 | 4761 | int error; |
34dc7c2f BB |
4762 | vdev_t *vd, *pvd, *cvd, *tvd; |
4763 | boolean_t unspare = B_FALSE; | |
d4ed6673 | 4764 | uint64_t unspare_guid = 0; |
428870ff | 4765 | char *vdpath; |
d6320ddb | 4766 | int c, t; |
2e528b49 | 4767 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev); |
572e2857 BB |
4768 | ASSERT(spa_writeable(spa)); |
4769 | ||
34dc7c2f BB |
4770 | txg = spa_vdev_enter(spa); |
4771 | ||
b128c09f | 4772 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
4773 | |
4774 | if (vd == NULL) | |
4775 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
4776 | ||
4777 | if (!vd->vdev_ops->vdev_op_leaf) | |
4778 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
4779 | ||
4780 | pvd = vd->vdev_parent; | |
4781 | ||
fb5f0bc8 BB |
4782 | /* |
4783 | * If the parent/child relationship is not as expected, don't do it. | |
4784 | * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing | |
4785 | * vdev that's replacing B with C. The user's intent in replacing | |
4786 | * is to go from M(A,B) to M(A,C). If the user decides to cancel | |
4787 | * the replace by detaching C, the expected behavior is to end up | |
4788 | * M(A,B). But suppose that right after deciding to detach C, | |
4789 | * the replacement of B completes. We would have M(A,C), and then | |
4790 | * ask to detach C, which would leave us with just A -- not what | |
4791 | * the user wanted. To prevent this, we make sure that the | |
4792 | * parent/child relationship hasn't changed -- in this example, | |
4793 | * that C's parent is still the replacing vdev R. | |
4794 | */ | |
4795 | if (pvd->vdev_guid != pguid && pguid != 0) | |
4796 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
4797 | ||
34dc7c2f | 4798 | /* |
572e2857 | 4799 | * Only 'replacing' or 'spare' vdevs can be replaced. |
34dc7c2f | 4800 | */ |
572e2857 BB |
4801 | if (replace_done && pvd->vdev_ops != &vdev_replacing_ops && |
4802 | pvd->vdev_ops != &vdev_spare_ops) | |
4803 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
34dc7c2f BB |
4804 | |
4805 | ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
4806 | spa_version(spa) >= SPA_VERSION_SPARES); | |
4807 | ||
4808 | /* | |
4809 | * Only mirror, replacing, and spare vdevs support detach. | |
4810 | */ | |
4811 | if (pvd->vdev_ops != &vdev_replacing_ops && | |
4812 | pvd->vdev_ops != &vdev_mirror_ops && | |
4813 | pvd->vdev_ops != &vdev_spare_ops) | |
4814 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
4815 | ||
4816 | /* | |
fb5f0bc8 BB |
4817 | * If this device has the only valid copy of some data, |
4818 | * we cannot safely detach it. | |
34dc7c2f | 4819 | */ |
fb5f0bc8 | 4820 | if (vdev_dtl_required(vd)) |
34dc7c2f BB |
4821 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
4822 | ||
fb5f0bc8 | 4823 | ASSERT(pvd->vdev_children >= 2); |
34dc7c2f | 4824 | |
b128c09f BB |
4825 | /* |
4826 | * If we are detaching the second disk from a replacing vdev, then | |
4827 | * check to see if we changed the original vdev's path to have "/old" | |
4828 | * at the end in spa_vdev_attach(). If so, undo that change now. | |
4829 | */ | |
572e2857 BB |
4830 | if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id > 0 && |
4831 | vd->vdev_path != NULL) { | |
4832 | size_t len = strlen(vd->vdev_path); | |
4833 | ||
d6320ddb | 4834 | for (c = 0; c < pvd->vdev_children; c++) { |
572e2857 BB |
4835 | cvd = pvd->vdev_child[c]; |
4836 | ||
4837 | if (cvd == vd || cvd->vdev_path == NULL) | |
4838 | continue; | |
4839 | ||
4840 | if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && | |
4841 | strcmp(cvd->vdev_path + len, "/old") == 0) { | |
4842 | spa_strfree(cvd->vdev_path); | |
4843 | cvd->vdev_path = spa_strdup(vd->vdev_path); | |
4844 | break; | |
4845 | } | |
b128c09f BB |
4846 | } |
4847 | } | |
4848 | ||
34dc7c2f BB |
4849 | /* |
4850 | * If we are detaching the original disk from a spare, then it implies | |
4851 | * that the spare should become a real disk, and be removed from the | |
4852 | * active spare list for the pool. | |
4853 | */ | |
4854 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 BB |
4855 | vd->vdev_id == 0 && |
4856 | pvd->vdev_child[pvd->vdev_children - 1]->vdev_isspare) | |
34dc7c2f BB |
4857 | unspare = B_TRUE; |
4858 | ||
4859 | /* | |
4860 | * Erase the disk labels so the disk can be used for other things. | |
4861 | * This must be done after all other error cases are handled, | |
4862 | * but before we disembowel vd (so we can still do I/O to it). | |
4863 | * But if we can't do it, don't treat the error as fatal -- | |
4864 | * it may be that the unwritability of the disk is the reason | |
4865 | * it's being detached! | |
4866 | */ | |
4867 | error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
4868 | ||
4869 | /* | |
4870 | * Remove vd from its parent and compact the parent's children. | |
4871 | */ | |
4872 | vdev_remove_child(pvd, vd); | |
4873 | vdev_compact_children(pvd); | |
4874 | ||
4875 | /* | |
4876 | * Remember one of the remaining children so we can get tvd below. | |
4877 | */ | |
572e2857 | 4878 | cvd = pvd->vdev_child[pvd->vdev_children - 1]; |
34dc7c2f BB |
4879 | |
4880 | /* | |
4881 | * If we need to remove the remaining child from the list of hot spares, | |
fb5f0bc8 BB |
4882 | * do it now, marking the vdev as no longer a spare in the process. |
4883 | * We must do this before vdev_remove_parent(), because that can | |
4884 | * change the GUID if it creates a new toplevel GUID. For a similar | |
4885 | * reason, we must remove the spare now, in the same txg as the detach; | |
4886 | * otherwise someone could attach a new sibling, change the GUID, and | |
4887 | * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. | |
34dc7c2f BB |
4888 | */ |
4889 | if (unspare) { | |
4890 | ASSERT(cvd->vdev_isspare); | |
4891 | spa_spare_remove(cvd); | |
4892 | unspare_guid = cvd->vdev_guid; | |
fb5f0bc8 | 4893 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
572e2857 | 4894 | cvd->vdev_unspare = B_TRUE; |
34dc7c2f BB |
4895 | } |
4896 | ||
428870ff BB |
4897 | /* |
4898 | * If the parent mirror/replacing vdev only has one child, | |
4899 | * the parent is no longer needed. Remove it from the tree. | |
4900 | */ | |
572e2857 BB |
4901 | if (pvd->vdev_children == 1) { |
4902 | if (pvd->vdev_ops == &vdev_spare_ops) | |
4903 | cvd->vdev_unspare = B_FALSE; | |
428870ff | 4904 | vdev_remove_parent(cvd); |
572e2857 BB |
4905 | } |
4906 | ||
428870ff BB |
4907 | |
4908 | /* | |
4909 | * We don't set tvd until now because the parent we just removed | |
4910 | * may have been the previous top-level vdev. | |
4911 | */ | |
4912 | tvd = cvd->vdev_top; | |
4913 | ASSERT(tvd->vdev_parent == rvd); | |
4914 | ||
4915 | /* | |
4916 | * Reevaluate the parent vdev state. | |
4917 | */ | |
4918 | vdev_propagate_state(cvd); | |
4919 | ||
4920 | /* | |
4921 | * If the 'autoexpand' property is set on the pool then automatically | |
4922 | * try to expand the size of the pool. For example if the device we | |
4923 | * just detached was smaller than the others, it may be possible to | |
4924 | * add metaslabs (i.e. grow the pool). We need to reopen the vdev | |
4925 | * first so that we can obtain the updated sizes of the leaf vdevs. | |
4926 | */ | |
4927 | if (spa->spa_autoexpand) { | |
4928 | vdev_reopen(tvd); | |
4929 | vdev_expand(tvd, txg); | |
4930 | } | |
4931 | ||
4932 | vdev_config_dirty(tvd); | |
4933 | ||
4934 | /* | |
4935 | * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that | |
4936 | * vd->vdev_detached is set and free vd's DTL object in syncing context. | |
4937 | * But first make sure we're not on any *other* txg's DTL list, to | |
4938 | * prevent vd from being accessed after it's freed. | |
4939 | */ | |
4940 | vdpath = spa_strdup(vd->vdev_path); | |
d6320ddb | 4941 | for (t = 0; t < TXG_SIZE; t++) |
428870ff BB |
4942 | (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); |
4943 | vd->vdev_detached = B_TRUE; | |
4944 | vdev_dirty(tvd, VDD_DTL, vd, txg); | |
4945 | ||
26685276 | 4946 | spa_event_notify(spa, vd, FM_EREPORT_ZFS_DEVICE_REMOVE); |
428870ff | 4947 | |
572e2857 BB |
4948 | /* hang on to the spa before we release the lock */ |
4949 | spa_open_ref(spa, FTAG); | |
4950 | ||
428870ff BB |
4951 | error = spa_vdev_exit(spa, vd, txg, 0); |
4952 | ||
6f1ffb06 | 4953 | spa_history_log_internal(spa, "detach", NULL, |
428870ff BB |
4954 | "vdev=%s", vdpath); |
4955 | spa_strfree(vdpath); | |
4956 | ||
4957 | /* | |
4958 | * If this was the removal of the original device in a hot spare vdev, | |
4959 | * then we want to go through and remove the device from the hot spare | |
4960 | * list of every other pool. | |
4961 | */ | |
4962 | if (unspare) { | |
572e2857 BB |
4963 | spa_t *altspa = NULL; |
4964 | ||
428870ff | 4965 | mutex_enter(&spa_namespace_lock); |
572e2857 BB |
4966 | while ((altspa = spa_next(altspa)) != NULL) { |
4967 | if (altspa->spa_state != POOL_STATE_ACTIVE || | |
4968 | altspa == spa) | |
428870ff | 4969 | continue; |
572e2857 BB |
4970 | |
4971 | spa_open_ref(altspa, FTAG); | |
428870ff | 4972 | mutex_exit(&spa_namespace_lock); |
572e2857 | 4973 | (void) spa_vdev_remove(altspa, unspare_guid, B_TRUE); |
428870ff | 4974 | mutex_enter(&spa_namespace_lock); |
572e2857 | 4975 | spa_close(altspa, FTAG); |
428870ff BB |
4976 | } |
4977 | mutex_exit(&spa_namespace_lock); | |
572e2857 BB |
4978 | |
4979 | /* search the rest of the vdevs for spares to remove */ | |
4980 | spa_vdev_resilver_done(spa); | |
428870ff BB |
4981 | } |
4982 | ||
572e2857 BB |
4983 | /* all done with the spa; OK to release */ |
4984 | mutex_enter(&spa_namespace_lock); | |
4985 | spa_close(spa, FTAG); | |
4986 | mutex_exit(&spa_namespace_lock); | |
4987 | ||
428870ff BB |
4988 | return (error); |
4989 | } | |
4990 | ||
4991 | /* | |
4992 | * Split a set of devices from their mirrors, and create a new pool from them. | |
4993 | */ | |
4994 | int | |
4995 | spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, | |
4996 | nvlist_t *props, boolean_t exp) | |
4997 | { | |
4998 | int error = 0; | |
4999 | uint64_t txg, *glist; | |
5000 | spa_t *newspa; | |
5001 | uint_t c, children, lastlog; | |
5002 | nvlist_t **child, *nvl, *tmp; | |
5003 | dmu_tx_t *tx; | |
5004 | char *altroot = NULL; | |
5005 | vdev_t *rvd, **vml = NULL; /* vdev modify list */ | |
5006 | boolean_t activate_slog; | |
5007 | ||
572e2857 | 5008 | ASSERT(spa_writeable(spa)); |
428870ff BB |
5009 | |
5010 | txg = spa_vdev_enter(spa); | |
5011 | ||
5012 | /* clear the log and flush everything up to now */ | |
5013 | activate_slog = spa_passivate_log(spa); | |
5014 | (void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
5015 | error = spa_offline_log(spa); | |
5016 | txg = spa_vdev_config_enter(spa); | |
5017 | ||
5018 | if (activate_slog) | |
5019 | spa_activate_log(spa); | |
5020 | ||
5021 | if (error != 0) | |
5022 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5023 | ||
5024 | /* check new spa name before going any further */ | |
5025 | if (spa_lookup(newname) != NULL) | |
5026 | return (spa_vdev_exit(spa, NULL, txg, EEXIST)); | |
5027 | ||
5028 | /* | |
5029 | * scan through all the children to ensure they're all mirrors | |
5030 | */ | |
5031 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 || | |
5032 | nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child, | |
5033 | &children) != 0) | |
5034 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
5035 | ||
5036 | /* first, check to ensure we've got the right child count */ | |
5037 | rvd = spa->spa_root_vdev; | |
5038 | lastlog = 0; | |
5039 | for (c = 0; c < rvd->vdev_children; c++) { | |
5040 | vdev_t *vd = rvd->vdev_child[c]; | |
5041 | ||
5042 | /* don't count the holes & logs as children */ | |
5043 | if (vd->vdev_islog || vd->vdev_ishole) { | |
5044 | if (lastlog == 0) | |
5045 | lastlog = c; | |
5046 | continue; | |
5047 | } | |
5048 | ||
5049 | lastlog = 0; | |
5050 | } | |
5051 | if (children != (lastlog != 0 ? lastlog : rvd->vdev_children)) | |
5052 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
5053 | ||
5054 | /* next, ensure no spare or cache devices are part of the split */ | |
5055 | if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 || | |
5056 | nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0) | |
5057 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
5058 | ||
79c76d5b BB |
5059 | vml = kmem_zalloc(children * sizeof (vdev_t *), KM_SLEEP); |
5060 | glist = kmem_zalloc(children * sizeof (uint64_t), KM_SLEEP); | |
428870ff BB |
5061 | |
5062 | /* then, loop over each vdev and validate it */ | |
5063 | for (c = 0; c < children; c++) { | |
5064 | uint64_t is_hole = 0; | |
5065 | ||
5066 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, | |
5067 | &is_hole); | |
5068 | ||
5069 | if (is_hole != 0) { | |
5070 | if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole || | |
5071 | spa->spa_root_vdev->vdev_child[c]->vdev_islog) { | |
5072 | continue; | |
5073 | } else { | |
2e528b49 | 5074 | error = SET_ERROR(EINVAL); |
428870ff BB |
5075 | break; |
5076 | } | |
5077 | } | |
5078 | ||
5079 | /* which disk is going to be split? */ | |
5080 | if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID, | |
5081 | &glist[c]) != 0) { | |
2e528b49 | 5082 | error = SET_ERROR(EINVAL); |
428870ff BB |
5083 | break; |
5084 | } | |
5085 | ||
5086 | /* look it up in the spa */ | |
5087 | vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE); | |
5088 | if (vml[c] == NULL) { | |
2e528b49 | 5089 | error = SET_ERROR(ENODEV); |
428870ff BB |
5090 | break; |
5091 | } | |
5092 | ||
5093 | /* make sure there's nothing stopping the split */ | |
5094 | if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops || | |
5095 | vml[c]->vdev_islog || | |
5096 | vml[c]->vdev_ishole || | |
5097 | vml[c]->vdev_isspare || | |
5098 | vml[c]->vdev_isl2cache || | |
5099 | !vdev_writeable(vml[c]) || | |
5100 | vml[c]->vdev_children != 0 || | |
5101 | vml[c]->vdev_state != VDEV_STATE_HEALTHY || | |
5102 | c != spa->spa_root_vdev->vdev_child[c]->vdev_id) { | |
2e528b49 | 5103 | error = SET_ERROR(EINVAL); |
428870ff BB |
5104 | break; |
5105 | } | |
5106 | ||
5107 | if (vdev_dtl_required(vml[c])) { | |
2e528b49 | 5108 | error = SET_ERROR(EBUSY); |
428870ff BB |
5109 | break; |
5110 | } | |
5111 | ||
5112 | /* we need certain info from the top level */ | |
5113 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY, | |
5114 | vml[c]->vdev_top->vdev_ms_array) == 0); | |
5115 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT, | |
5116 | vml[c]->vdev_top->vdev_ms_shift) == 0); | |
5117 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE, | |
5118 | vml[c]->vdev_top->vdev_asize) == 0); | |
5119 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT, | |
5120 | vml[c]->vdev_top->vdev_ashift) == 0); | |
5121 | } | |
5122 | ||
5123 | if (error != 0) { | |
5124 | kmem_free(vml, children * sizeof (vdev_t *)); | |
5125 | kmem_free(glist, children * sizeof (uint64_t)); | |
5126 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5127 | } | |
5128 | ||
5129 | /* stop writers from using the disks */ | |
5130 | for (c = 0; c < children; c++) { | |
5131 | if (vml[c] != NULL) | |
5132 | vml[c]->vdev_offline = B_TRUE; | |
5133 | } | |
5134 | vdev_reopen(spa->spa_root_vdev); | |
34dc7c2f BB |
5135 | |
5136 | /* | |
428870ff BB |
5137 | * Temporarily record the splitting vdevs in the spa config. This |
5138 | * will disappear once the config is regenerated. | |
34dc7c2f | 5139 | */ |
79c76d5b | 5140 | VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
428870ff BB |
5141 | VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, |
5142 | glist, children) == 0); | |
5143 | kmem_free(glist, children * sizeof (uint64_t)); | |
34dc7c2f | 5144 | |
428870ff BB |
5145 | mutex_enter(&spa->spa_props_lock); |
5146 | VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT, | |
5147 | nvl) == 0); | |
5148 | mutex_exit(&spa->spa_props_lock); | |
5149 | spa->spa_config_splitting = nvl; | |
5150 | vdev_config_dirty(spa->spa_root_vdev); | |
5151 | ||
5152 | /* configure and create the new pool */ | |
5153 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0); | |
5154 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
5155 | exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0); | |
5156 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
5157 | spa_version(spa)) == 0); | |
5158 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
5159 | spa->spa_config_txg) == 0); | |
5160 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
5161 | spa_generate_guid(NULL)) == 0); | |
5162 | (void) nvlist_lookup_string(props, | |
5163 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
34dc7c2f | 5164 | |
428870ff BB |
5165 | /* add the new pool to the namespace */ |
5166 | newspa = spa_add(newname, config, altroot); | |
5167 | newspa->spa_config_txg = spa->spa_config_txg; | |
5168 | spa_set_log_state(newspa, SPA_LOG_CLEAR); | |
5169 | ||
5170 | /* release the spa config lock, retaining the namespace lock */ | |
5171 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
5172 | ||
5173 | if (zio_injection_enabled) | |
5174 | zio_handle_panic_injection(spa, FTAG, 1); | |
5175 | ||
5176 | spa_activate(newspa, spa_mode_global); | |
5177 | spa_async_suspend(newspa); | |
5178 | ||
5179 | /* create the new pool from the disks of the original pool */ | |
5180 | error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE, B_TRUE); | |
5181 | if (error) | |
5182 | goto out; | |
5183 | ||
5184 | /* if that worked, generate a real config for the new pool */ | |
5185 | if (newspa->spa_root_vdev != NULL) { | |
5186 | VERIFY(nvlist_alloc(&newspa->spa_config_splitting, | |
79c76d5b | 5187 | NV_UNIQUE_NAME, KM_SLEEP) == 0); |
428870ff BB |
5188 | VERIFY(nvlist_add_uint64(newspa->spa_config_splitting, |
5189 | ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0); | |
5190 | spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL, | |
5191 | B_TRUE)); | |
9babb374 | 5192 | } |
34dc7c2f | 5193 | |
428870ff BB |
5194 | /* set the props */ |
5195 | if (props != NULL) { | |
5196 | spa_configfile_set(newspa, props, B_FALSE); | |
5197 | error = spa_prop_set(newspa, props); | |
5198 | if (error) | |
5199 | goto out; | |
5200 | } | |
34dc7c2f | 5201 | |
428870ff BB |
5202 | /* flush everything */ |
5203 | txg = spa_vdev_config_enter(newspa); | |
5204 | vdev_config_dirty(newspa->spa_root_vdev); | |
5205 | (void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG); | |
34dc7c2f | 5206 | |
428870ff BB |
5207 | if (zio_injection_enabled) |
5208 | zio_handle_panic_injection(spa, FTAG, 2); | |
34dc7c2f | 5209 | |
428870ff | 5210 | spa_async_resume(newspa); |
34dc7c2f | 5211 | |
428870ff BB |
5212 | /* finally, update the original pool's config */ |
5213 | txg = spa_vdev_config_enter(spa); | |
5214 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
5215 | error = dmu_tx_assign(tx, TXG_WAIT); | |
5216 | if (error != 0) | |
5217 | dmu_tx_abort(tx); | |
5218 | for (c = 0; c < children; c++) { | |
5219 | if (vml[c] != NULL) { | |
5220 | vdev_split(vml[c]); | |
5221 | if (error == 0) | |
6f1ffb06 MA |
5222 | spa_history_log_internal(spa, "detach", tx, |
5223 | "vdev=%s", vml[c]->vdev_path); | |
428870ff | 5224 | vdev_free(vml[c]); |
34dc7c2f | 5225 | } |
34dc7c2f | 5226 | } |
428870ff BB |
5227 | vdev_config_dirty(spa->spa_root_vdev); |
5228 | spa->spa_config_splitting = NULL; | |
5229 | nvlist_free(nvl); | |
5230 | if (error == 0) | |
5231 | dmu_tx_commit(tx); | |
5232 | (void) spa_vdev_exit(spa, NULL, txg, 0); | |
5233 | ||
5234 | if (zio_injection_enabled) | |
5235 | zio_handle_panic_injection(spa, FTAG, 3); | |
5236 | ||
5237 | /* split is complete; log a history record */ | |
6f1ffb06 MA |
5238 | spa_history_log_internal(newspa, "split", NULL, |
5239 | "from pool %s", spa_name(spa)); | |
428870ff BB |
5240 | |
5241 | kmem_free(vml, children * sizeof (vdev_t *)); | |
5242 | ||
5243 | /* if we're not going to mount the filesystems in userland, export */ | |
5244 | if (exp) | |
5245 | error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL, | |
5246 | B_FALSE, B_FALSE); | |
5247 | ||
5248 | return (error); | |
5249 | ||
5250 | out: | |
5251 | spa_unload(newspa); | |
5252 | spa_deactivate(newspa); | |
5253 | spa_remove(newspa); | |
5254 | ||
5255 | txg = spa_vdev_config_enter(spa); | |
5256 | ||
5257 | /* re-online all offlined disks */ | |
5258 | for (c = 0; c < children; c++) { | |
5259 | if (vml[c] != NULL) | |
5260 | vml[c]->vdev_offline = B_FALSE; | |
5261 | } | |
5262 | vdev_reopen(spa->spa_root_vdev); | |
5263 | ||
5264 | nvlist_free(spa->spa_config_splitting); | |
5265 | spa->spa_config_splitting = NULL; | |
5266 | (void) spa_vdev_exit(spa, NULL, txg, error); | |
34dc7c2f | 5267 | |
428870ff | 5268 | kmem_free(vml, children * sizeof (vdev_t *)); |
34dc7c2f BB |
5269 | return (error); |
5270 | } | |
5271 | ||
b128c09f BB |
5272 | static nvlist_t * |
5273 | spa_nvlist_lookup_by_guid(nvlist_t **nvpp, int count, uint64_t target_guid) | |
34dc7c2f | 5274 | { |
d6320ddb BB |
5275 | int i; |
5276 | ||
5277 | for (i = 0; i < count; i++) { | |
b128c09f | 5278 | uint64_t guid; |
34dc7c2f | 5279 | |
b128c09f BB |
5280 | VERIFY(nvlist_lookup_uint64(nvpp[i], ZPOOL_CONFIG_GUID, |
5281 | &guid) == 0); | |
34dc7c2f | 5282 | |
b128c09f BB |
5283 | if (guid == target_guid) |
5284 | return (nvpp[i]); | |
34dc7c2f BB |
5285 | } |
5286 | ||
b128c09f | 5287 | return (NULL); |
34dc7c2f BB |
5288 | } |
5289 | ||
b128c09f BB |
5290 | static void |
5291 | spa_vdev_remove_aux(nvlist_t *config, char *name, nvlist_t **dev, int count, | |
5292 | nvlist_t *dev_to_remove) | |
34dc7c2f | 5293 | { |
b128c09f | 5294 | nvlist_t **newdev = NULL; |
d6320ddb | 5295 | int i, j; |
34dc7c2f | 5296 | |
b128c09f | 5297 | if (count > 1) |
79c76d5b | 5298 | newdev = kmem_alloc((count - 1) * sizeof (void *), KM_SLEEP); |
34dc7c2f | 5299 | |
d6320ddb | 5300 | for (i = 0, j = 0; i < count; i++) { |
b128c09f BB |
5301 | if (dev[i] == dev_to_remove) |
5302 | continue; | |
79c76d5b | 5303 | VERIFY(nvlist_dup(dev[i], &newdev[j++], KM_SLEEP) == 0); |
34dc7c2f BB |
5304 | } |
5305 | ||
b128c09f BB |
5306 | VERIFY(nvlist_remove(config, name, DATA_TYPE_NVLIST_ARRAY) == 0); |
5307 | VERIFY(nvlist_add_nvlist_array(config, name, newdev, count - 1) == 0); | |
34dc7c2f | 5308 | |
d6320ddb | 5309 | for (i = 0; i < count - 1; i++) |
b128c09f | 5310 | nvlist_free(newdev[i]); |
34dc7c2f | 5311 | |
b128c09f BB |
5312 | if (count > 1) |
5313 | kmem_free(newdev, (count - 1) * sizeof (void *)); | |
34dc7c2f BB |
5314 | } |
5315 | ||
428870ff BB |
5316 | /* |
5317 | * Evacuate the device. | |
5318 | */ | |
5319 | static int | |
5320 | spa_vdev_remove_evacuate(spa_t *spa, vdev_t *vd) | |
5321 | { | |
5322 | uint64_t txg; | |
5323 | int error = 0; | |
5324 | ||
5325 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
5326 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
5327 | ASSERT(vd == vd->vdev_top); | |
5328 | ||
5329 | /* | |
5330 | * Evacuate the device. We don't hold the config lock as writer | |
5331 | * since we need to do I/O but we do keep the | |
5332 | * spa_namespace_lock held. Once this completes the device | |
5333 | * should no longer have any blocks allocated on it. | |
5334 | */ | |
5335 | if (vd->vdev_islog) { | |
5336 | if (vd->vdev_stat.vs_alloc != 0) | |
5337 | error = spa_offline_log(spa); | |
5338 | } else { | |
2e528b49 | 5339 | error = SET_ERROR(ENOTSUP); |
428870ff BB |
5340 | } |
5341 | ||
5342 | if (error) | |
5343 | return (error); | |
5344 | ||
5345 | /* | |
5346 | * The evacuation succeeded. Remove any remaining MOS metadata | |
5347 | * associated with this vdev, and wait for these changes to sync. | |
5348 | */ | |
c99c9001 | 5349 | ASSERT0(vd->vdev_stat.vs_alloc); |
428870ff BB |
5350 | txg = spa_vdev_config_enter(spa); |
5351 | vd->vdev_removing = B_TRUE; | |
93cf2076 | 5352 | vdev_dirty_leaves(vd, VDD_DTL, txg); |
428870ff BB |
5353 | vdev_config_dirty(vd); |
5354 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
5355 | ||
5356 | return (0); | |
5357 | } | |
5358 | ||
5359 | /* | |
5360 | * Complete the removal by cleaning up the namespace. | |
5361 | */ | |
5362 | static void | |
5363 | spa_vdev_remove_from_namespace(spa_t *spa, vdev_t *vd) | |
5364 | { | |
5365 | vdev_t *rvd = spa->spa_root_vdev; | |
5366 | uint64_t id = vd->vdev_id; | |
5367 | boolean_t last_vdev = (id == (rvd->vdev_children - 1)); | |
5368 | ||
5369 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
5370 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); | |
5371 | ASSERT(vd == vd->vdev_top); | |
5372 | ||
5373 | /* | |
5374 | * Only remove any devices which are empty. | |
5375 | */ | |
5376 | if (vd->vdev_stat.vs_alloc != 0) | |
5377 | return; | |
5378 | ||
5379 | (void) vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
5380 | ||
5381 | if (list_link_active(&vd->vdev_state_dirty_node)) | |
5382 | vdev_state_clean(vd); | |
5383 | if (list_link_active(&vd->vdev_config_dirty_node)) | |
5384 | vdev_config_clean(vd); | |
5385 | ||
5386 | vdev_free(vd); | |
5387 | ||
5388 | if (last_vdev) { | |
5389 | vdev_compact_children(rvd); | |
5390 | } else { | |
5391 | vd = vdev_alloc_common(spa, id, 0, &vdev_hole_ops); | |
5392 | vdev_add_child(rvd, vd); | |
5393 | } | |
5394 | vdev_config_dirty(rvd); | |
5395 | ||
5396 | /* | |
5397 | * Reassess the health of our root vdev. | |
5398 | */ | |
5399 | vdev_reopen(rvd); | |
5400 | } | |
5401 | ||
5402 | /* | |
5403 | * Remove a device from the pool - | |
5404 | * | |
5405 | * Removing a device from the vdev namespace requires several steps | |
5406 | * and can take a significant amount of time. As a result we use | |
5407 | * the spa_vdev_config_[enter/exit] functions which allow us to | |
5408 | * grab and release the spa_config_lock while still holding the namespace | |
5409 | * lock. During each step the configuration is synced out. | |
d3cc8b15 WA |
5410 | * |
5411 | * Currently, this supports removing only hot spares, slogs, and level 2 ARC | |
5412 | * devices. | |
34dc7c2f BB |
5413 | */ |
5414 | int | |
5415 | spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
5416 | { | |
5417 | vdev_t *vd; | |
428870ff | 5418 | metaslab_group_t *mg; |
b128c09f | 5419 | nvlist_t **spares, **l2cache, *nv; |
fb5f0bc8 | 5420 | uint64_t txg = 0; |
428870ff | 5421 | uint_t nspares, nl2cache; |
34dc7c2f | 5422 | int error = 0; |
fb5f0bc8 | 5423 | boolean_t locked = MUTEX_HELD(&spa_namespace_lock); |
34dc7c2f | 5424 | |
572e2857 BB |
5425 | ASSERT(spa_writeable(spa)); |
5426 | ||
fb5f0bc8 BB |
5427 | if (!locked) |
5428 | txg = spa_vdev_enter(spa); | |
34dc7c2f | 5429 | |
b128c09f | 5430 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
5431 | |
5432 | if (spa->spa_spares.sav_vdevs != NULL && | |
34dc7c2f | 5433 | nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, |
b128c09f BB |
5434 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0 && |
5435 | (nv = spa_nvlist_lookup_by_guid(spares, nspares, guid)) != NULL) { | |
5436 | /* | |
5437 | * Only remove the hot spare if it's not currently in use | |
5438 | * in this pool. | |
5439 | */ | |
5440 | if (vd == NULL || unspare) { | |
5441 | spa_vdev_remove_aux(spa->spa_spares.sav_config, | |
5442 | ZPOOL_CONFIG_SPARES, spares, nspares, nv); | |
5443 | spa_load_spares(spa); | |
5444 | spa->spa_spares.sav_sync = B_TRUE; | |
5445 | } else { | |
2e528b49 | 5446 | error = SET_ERROR(EBUSY); |
b128c09f BB |
5447 | } |
5448 | } else if (spa->spa_l2cache.sav_vdevs != NULL && | |
34dc7c2f | 5449 | nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, |
b128c09f BB |
5450 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && |
5451 | (nv = spa_nvlist_lookup_by_guid(l2cache, nl2cache, guid)) != NULL) { | |
5452 | /* | |
5453 | * Cache devices can always be removed. | |
5454 | */ | |
5455 | spa_vdev_remove_aux(spa->spa_l2cache.sav_config, | |
5456 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); | |
34dc7c2f BB |
5457 | spa_load_l2cache(spa); |
5458 | spa->spa_l2cache.sav_sync = B_TRUE; | |
428870ff BB |
5459 | } else if (vd != NULL && vd->vdev_islog) { |
5460 | ASSERT(!locked); | |
5461 | ASSERT(vd == vd->vdev_top); | |
5462 | ||
428870ff BB |
5463 | mg = vd->vdev_mg; |
5464 | ||
5465 | /* | |
5466 | * Stop allocating from this vdev. | |
5467 | */ | |
5468 | metaslab_group_passivate(mg); | |
5469 | ||
5470 | /* | |
5471 | * Wait for the youngest allocations and frees to sync, | |
5472 | * and then wait for the deferral of those frees to finish. | |
5473 | */ | |
5474 | spa_vdev_config_exit(spa, NULL, | |
5475 | txg + TXG_CONCURRENT_STATES + TXG_DEFER_SIZE, 0, FTAG); | |
5476 | ||
5477 | /* | |
5478 | * Attempt to evacuate the vdev. | |
5479 | */ | |
5480 | error = spa_vdev_remove_evacuate(spa, vd); | |
5481 | ||
5482 | txg = spa_vdev_config_enter(spa); | |
5483 | ||
5484 | /* | |
5485 | * If we couldn't evacuate the vdev, unwind. | |
5486 | */ | |
5487 | if (error) { | |
5488 | metaslab_group_activate(mg); | |
5489 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5490 | } | |
5491 | ||
5492 | /* | |
5493 | * Clean up the vdev namespace. | |
5494 | */ | |
5495 | spa_vdev_remove_from_namespace(spa, vd); | |
5496 | ||
b128c09f BB |
5497 | } else if (vd != NULL) { |
5498 | /* | |
5499 | * Normal vdevs cannot be removed (yet). | |
5500 | */ | |
2e528b49 | 5501 | error = SET_ERROR(ENOTSUP); |
b128c09f BB |
5502 | } else { |
5503 | /* | |
5504 | * There is no vdev of any kind with the specified guid. | |
5505 | */ | |
2e528b49 | 5506 | error = SET_ERROR(ENOENT); |
34dc7c2f BB |
5507 | } |
5508 | ||
fb5f0bc8 BB |
5509 | if (!locked) |
5510 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5511 | ||
5512 | return (error); | |
34dc7c2f BB |
5513 | } |
5514 | ||
5515 | /* | |
5516 | * Find any device that's done replacing, or a vdev marked 'unspare' that's | |
d3cc8b15 | 5517 | * currently spared, so we can detach it. |
34dc7c2f BB |
5518 | */ |
5519 | static vdev_t * | |
5520 | spa_vdev_resilver_done_hunt(vdev_t *vd) | |
5521 | { | |
5522 | vdev_t *newvd, *oldvd; | |
d6320ddb | 5523 | int c; |
34dc7c2f | 5524 | |
d6320ddb | 5525 | for (c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
5526 | oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
5527 | if (oldvd != NULL) | |
5528 | return (oldvd); | |
5529 | } | |
5530 | ||
5531 | /* | |
572e2857 BB |
5532 | * Check for a completed replacement. We always consider the first |
5533 | * vdev in the list to be the oldest vdev, and the last one to be | |
5534 | * the newest (see spa_vdev_attach() for how that works). In | |
5535 | * the case where the newest vdev is faulted, we will not automatically | |
5536 | * remove it after a resilver completes. This is OK as it will require | |
5537 | * user intervention to determine which disk the admin wishes to keep. | |
34dc7c2f | 5538 | */ |
572e2857 BB |
5539 | if (vd->vdev_ops == &vdev_replacing_ops) { |
5540 | ASSERT(vd->vdev_children > 1); | |
5541 | ||
5542 | newvd = vd->vdev_child[vd->vdev_children - 1]; | |
34dc7c2f | 5543 | oldvd = vd->vdev_child[0]; |
34dc7c2f | 5544 | |
fb5f0bc8 | 5545 | if (vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 5546 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
fb5f0bc8 | 5547 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 5548 | return (oldvd); |
34dc7c2f BB |
5549 | } |
5550 | ||
5551 | /* | |
5552 | * Check for a completed resilver with the 'unspare' flag set. | |
5553 | */ | |
572e2857 BB |
5554 | if (vd->vdev_ops == &vdev_spare_ops) { |
5555 | vdev_t *first = vd->vdev_child[0]; | |
5556 | vdev_t *last = vd->vdev_child[vd->vdev_children - 1]; | |
5557 | ||
5558 | if (last->vdev_unspare) { | |
5559 | oldvd = first; | |
5560 | newvd = last; | |
5561 | } else if (first->vdev_unspare) { | |
5562 | oldvd = last; | |
5563 | newvd = first; | |
5564 | } else { | |
5565 | oldvd = NULL; | |
5566 | } | |
34dc7c2f | 5567 | |
572e2857 | 5568 | if (oldvd != NULL && |
fb5f0bc8 | 5569 | vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 5570 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
572e2857 | 5571 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 5572 | return (oldvd); |
572e2857 BB |
5573 | |
5574 | /* | |
5575 | * If there are more than two spares attached to a disk, | |
5576 | * and those spares are not required, then we want to | |
5577 | * attempt to free them up now so that they can be used | |
5578 | * by other pools. Once we're back down to a single | |
5579 | * disk+spare, we stop removing them. | |
5580 | */ | |
5581 | if (vd->vdev_children > 2) { | |
5582 | newvd = vd->vdev_child[1]; | |
5583 | ||
5584 | if (newvd->vdev_isspare && last->vdev_isspare && | |
5585 | vdev_dtl_empty(last, DTL_MISSING) && | |
5586 | vdev_dtl_empty(last, DTL_OUTAGE) && | |
5587 | !vdev_dtl_required(newvd)) | |
5588 | return (newvd); | |
34dc7c2f | 5589 | } |
34dc7c2f BB |
5590 | } |
5591 | ||
5592 | return (NULL); | |
5593 | } | |
5594 | ||
5595 | static void | |
5596 | spa_vdev_resilver_done(spa_t *spa) | |
5597 | { | |
fb5f0bc8 BB |
5598 | vdev_t *vd, *pvd, *ppvd; |
5599 | uint64_t guid, sguid, pguid, ppguid; | |
34dc7c2f | 5600 | |
fb5f0bc8 | 5601 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5602 | |
5603 | while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { | |
fb5f0bc8 BB |
5604 | pvd = vd->vdev_parent; |
5605 | ppvd = pvd->vdev_parent; | |
34dc7c2f | 5606 | guid = vd->vdev_guid; |
fb5f0bc8 BB |
5607 | pguid = pvd->vdev_guid; |
5608 | ppguid = ppvd->vdev_guid; | |
5609 | sguid = 0; | |
34dc7c2f BB |
5610 | /* |
5611 | * If we have just finished replacing a hot spared device, then | |
5612 | * we need to detach the parent's first child (the original hot | |
5613 | * spare) as well. | |
5614 | */ | |
572e2857 BB |
5615 | if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0 && |
5616 | ppvd->vdev_children == 2) { | |
34dc7c2f | 5617 | ASSERT(pvd->vdev_ops == &vdev_replacing_ops); |
fb5f0bc8 | 5618 | sguid = ppvd->vdev_child[1]->vdev_guid; |
34dc7c2f | 5619 | } |
5d1f7fb6 GW |
5620 | ASSERT(vd->vdev_resilver_txg == 0 || !vdev_dtl_required(vd)); |
5621 | ||
fb5f0bc8 BB |
5622 | spa_config_exit(spa, SCL_ALL, FTAG); |
5623 | if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) | |
34dc7c2f | 5624 | return; |
fb5f0bc8 | 5625 | if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) |
34dc7c2f | 5626 | return; |
fb5f0bc8 | 5627 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5628 | } |
5629 | ||
fb5f0bc8 | 5630 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5631 | } |
5632 | ||
5633 | /* | |
428870ff | 5634 | * Update the stored path or FRU for this vdev. |
34dc7c2f BB |
5635 | */ |
5636 | int | |
9babb374 BB |
5637 | spa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value, |
5638 | boolean_t ispath) | |
34dc7c2f | 5639 | { |
b128c09f | 5640 | vdev_t *vd; |
428870ff | 5641 | boolean_t sync = B_FALSE; |
34dc7c2f | 5642 | |
572e2857 BB |
5643 | ASSERT(spa_writeable(spa)); |
5644 | ||
428870ff | 5645 | spa_vdev_state_enter(spa, SCL_ALL); |
34dc7c2f | 5646 | |
9babb374 | 5647 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
428870ff | 5648 | return (spa_vdev_state_exit(spa, NULL, ENOENT)); |
34dc7c2f BB |
5649 | |
5650 | if (!vd->vdev_ops->vdev_op_leaf) | |
428870ff | 5651 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 5652 | |
9babb374 | 5653 | if (ispath) { |
428870ff BB |
5654 | if (strcmp(value, vd->vdev_path) != 0) { |
5655 | spa_strfree(vd->vdev_path); | |
5656 | vd->vdev_path = spa_strdup(value); | |
5657 | sync = B_TRUE; | |
5658 | } | |
9babb374 | 5659 | } else { |
428870ff BB |
5660 | if (vd->vdev_fru == NULL) { |
5661 | vd->vdev_fru = spa_strdup(value); | |
5662 | sync = B_TRUE; | |
5663 | } else if (strcmp(value, vd->vdev_fru) != 0) { | |
9babb374 | 5664 | spa_strfree(vd->vdev_fru); |
428870ff BB |
5665 | vd->vdev_fru = spa_strdup(value); |
5666 | sync = B_TRUE; | |
5667 | } | |
9babb374 | 5668 | } |
34dc7c2f | 5669 | |
428870ff | 5670 | return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0)); |
34dc7c2f BB |
5671 | } |
5672 | ||
9babb374 BB |
5673 | int |
5674 | spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) | |
5675 | { | |
5676 | return (spa_vdev_set_common(spa, guid, newpath, B_TRUE)); | |
5677 | } | |
5678 | ||
5679 | int | |
5680 | spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru) | |
5681 | { | |
5682 | return (spa_vdev_set_common(spa, guid, newfru, B_FALSE)); | |
5683 | } | |
5684 | ||
34dc7c2f BB |
5685 | /* |
5686 | * ========================================================================== | |
428870ff | 5687 | * SPA Scanning |
34dc7c2f BB |
5688 | * ========================================================================== |
5689 | */ | |
5690 | ||
34dc7c2f | 5691 | int |
428870ff BB |
5692 | spa_scan_stop(spa_t *spa) |
5693 | { | |
5694 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
5695 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
2e528b49 | 5696 | return (SET_ERROR(EBUSY)); |
428870ff BB |
5697 | return (dsl_scan_cancel(spa->spa_dsl_pool)); |
5698 | } | |
5699 | ||
5700 | int | |
5701 | spa_scan(spa_t *spa, pool_scan_func_t func) | |
34dc7c2f | 5702 | { |
b128c09f | 5703 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); |
34dc7c2f | 5704 | |
428870ff | 5705 | if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE) |
2e528b49 | 5706 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f | 5707 | |
34dc7c2f | 5708 | /* |
b128c09f BB |
5709 | * If a resilver was requested, but there is no DTL on a |
5710 | * writeable leaf device, we have nothing to do. | |
34dc7c2f | 5711 | */ |
428870ff | 5712 | if (func == POOL_SCAN_RESILVER && |
b128c09f BB |
5713 | !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { |
5714 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f BB |
5715 | return (0); |
5716 | } | |
5717 | ||
428870ff | 5718 | return (dsl_scan(spa->spa_dsl_pool, func)); |
34dc7c2f BB |
5719 | } |
5720 | ||
5721 | /* | |
5722 | * ========================================================================== | |
5723 | * SPA async task processing | |
5724 | * ========================================================================== | |
5725 | */ | |
5726 | ||
5727 | static void | |
5728 | spa_async_remove(spa_t *spa, vdev_t *vd) | |
5729 | { | |
d6320ddb BB |
5730 | int c; |
5731 | ||
b128c09f | 5732 | if (vd->vdev_remove_wanted) { |
428870ff BB |
5733 | vd->vdev_remove_wanted = B_FALSE; |
5734 | vd->vdev_delayed_close = B_FALSE; | |
b128c09f | 5735 | vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); |
428870ff BB |
5736 | |
5737 | /* | |
5738 | * We want to clear the stats, but we don't want to do a full | |
5739 | * vdev_clear() as that will cause us to throw away | |
5740 | * degraded/faulted state as well as attempt to reopen the | |
5741 | * device, all of which is a waste. | |
5742 | */ | |
5743 | vd->vdev_stat.vs_read_errors = 0; | |
5744 | vd->vdev_stat.vs_write_errors = 0; | |
5745 | vd->vdev_stat.vs_checksum_errors = 0; | |
5746 | ||
b128c09f BB |
5747 | vdev_state_dirty(vd->vdev_top); |
5748 | } | |
34dc7c2f | 5749 | |
d6320ddb | 5750 | for (c = 0; c < vd->vdev_children; c++) |
b128c09f BB |
5751 | spa_async_remove(spa, vd->vdev_child[c]); |
5752 | } | |
5753 | ||
5754 | static void | |
5755 | spa_async_probe(spa_t *spa, vdev_t *vd) | |
5756 | { | |
d6320ddb BB |
5757 | int c; |
5758 | ||
b128c09f | 5759 | if (vd->vdev_probe_wanted) { |
428870ff | 5760 | vd->vdev_probe_wanted = B_FALSE; |
b128c09f | 5761 | vdev_reopen(vd); /* vdev_open() does the actual probe */ |
34dc7c2f | 5762 | } |
b128c09f | 5763 | |
d6320ddb | 5764 | for (c = 0; c < vd->vdev_children; c++) |
b128c09f | 5765 | spa_async_probe(spa, vd->vdev_child[c]); |
34dc7c2f BB |
5766 | } |
5767 | ||
9babb374 BB |
5768 | static void |
5769 | spa_async_autoexpand(spa_t *spa, vdev_t *vd) | |
5770 | { | |
d6320ddb | 5771 | int c; |
9babb374 BB |
5772 | |
5773 | if (!spa->spa_autoexpand) | |
5774 | return; | |
5775 | ||
d6320ddb | 5776 | for (c = 0; c < vd->vdev_children; c++) { |
9babb374 BB |
5777 | vdev_t *cvd = vd->vdev_child[c]; |
5778 | spa_async_autoexpand(spa, cvd); | |
5779 | } | |
5780 | ||
5781 | if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL) | |
5782 | return; | |
5783 | ||
26685276 | 5784 | spa_event_notify(vd->vdev_spa, vd, FM_EREPORT_ZFS_DEVICE_AUTOEXPAND); |
9babb374 BB |
5785 | } |
5786 | ||
34dc7c2f BB |
5787 | static void |
5788 | spa_async_thread(spa_t *spa) | |
5789 | { | |
d6320ddb | 5790 | int tasks, i; |
34dc7c2f BB |
5791 | |
5792 | ASSERT(spa->spa_sync_on); | |
5793 | ||
5794 | mutex_enter(&spa->spa_async_lock); | |
5795 | tasks = spa->spa_async_tasks; | |
5796 | spa->spa_async_tasks = 0; | |
5797 | mutex_exit(&spa->spa_async_lock); | |
5798 | ||
5799 | /* | |
5800 | * See if the config needs to be updated. | |
5801 | */ | |
5802 | if (tasks & SPA_ASYNC_CONFIG_UPDATE) { | |
428870ff | 5803 | uint64_t old_space, new_space; |
9babb374 | 5804 | |
34dc7c2f | 5805 | mutex_enter(&spa_namespace_lock); |
428870ff | 5806 | old_space = metaslab_class_get_space(spa_normal_class(spa)); |
34dc7c2f | 5807 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
428870ff | 5808 | new_space = metaslab_class_get_space(spa_normal_class(spa)); |
34dc7c2f | 5809 | mutex_exit(&spa_namespace_lock); |
9babb374 BB |
5810 | |
5811 | /* | |
5812 | * If the pool grew as a result of the config update, | |
5813 | * then log an internal history event. | |
5814 | */ | |
428870ff | 5815 | if (new_space != old_space) { |
6f1ffb06 | 5816 | spa_history_log_internal(spa, "vdev online", NULL, |
45d1cae3 | 5817 | "pool '%s' size: %llu(+%llu)", |
428870ff | 5818 | spa_name(spa), new_space, new_space - old_space); |
9babb374 | 5819 | } |
34dc7c2f BB |
5820 | } |
5821 | ||
5822 | /* | |
5823 | * See if any devices need to be marked REMOVED. | |
34dc7c2f | 5824 | */ |
b128c09f | 5825 | if (tasks & SPA_ASYNC_REMOVE) { |
428870ff | 5826 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 5827 | spa_async_remove(spa, spa->spa_root_vdev); |
d6320ddb | 5828 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) |
b128c09f | 5829 | spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); |
d6320ddb | 5830 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
b128c09f BB |
5831 | spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); |
5832 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
34dc7c2f BB |
5833 | } |
5834 | ||
9babb374 BB |
5835 | if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) { |
5836 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
5837 | spa_async_autoexpand(spa, spa->spa_root_vdev); | |
5838 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
5839 | } | |
5840 | ||
34dc7c2f | 5841 | /* |
b128c09f | 5842 | * See if any devices need to be probed. |
34dc7c2f | 5843 | */ |
b128c09f | 5844 | if (tasks & SPA_ASYNC_PROBE) { |
428870ff | 5845 | spa_vdev_state_enter(spa, SCL_NONE); |
b128c09f BB |
5846 | spa_async_probe(spa, spa->spa_root_vdev); |
5847 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
5848 | } | |
34dc7c2f BB |
5849 | |
5850 | /* | |
b128c09f | 5851 | * If any devices are done replacing, detach them. |
34dc7c2f | 5852 | */ |
b128c09f BB |
5853 | if (tasks & SPA_ASYNC_RESILVER_DONE) |
5854 | spa_vdev_resilver_done(spa); | |
34dc7c2f BB |
5855 | |
5856 | /* | |
5857 | * Kick off a resilver. | |
5858 | */ | |
b128c09f | 5859 | if (tasks & SPA_ASYNC_RESILVER) |
428870ff | 5860 | dsl_resilver_restart(spa->spa_dsl_pool, 0); |
34dc7c2f BB |
5861 | |
5862 | /* | |
5863 | * Let the world know that we're done. | |
5864 | */ | |
5865 | mutex_enter(&spa->spa_async_lock); | |
5866 | spa->spa_async_thread = NULL; | |
5867 | cv_broadcast(&spa->spa_async_cv); | |
5868 | mutex_exit(&spa->spa_async_lock); | |
5869 | thread_exit(); | |
5870 | } | |
5871 | ||
5872 | void | |
5873 | spa_async_suspend(spa_t *spa) | |
5874 | { | |
5875 | mutex_enter(&spa->spa_async_lock); | |
5876 | spa->spa_async_suspended++; | |
5877 | while (spa->spa_async_thread != NULL) | |
5878 | cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
5879 | mutex_exit(&spa->spa_async_lock); | |
5880 | } | |
5881 | ||
5882 | void | |
5883 | spa_async_resume(spa_t *spa) | |
5884 | { | |
5885 | mutex_enter(&spa->spa_async_lock); | |
5886 | ASSERT(spa->spa_async_suspended != 0); | |
5887 | spa->spa_async_suspended--; | |
5888 | mutex_exit(&spa->spa_async_lock); | |
5889 | } | |
5890 | ||
5891 | static void | |
5892 | spa_async_dispatch(spa_t *spa) | |
5893 | { | |
5894 | mutex_enter(&spa->spa_async_lock); | |
5895 | if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
5896 | spa->spa_async_thread == NULL && | |
5897 | rootdir != NULL && !vn_is_readonly(rootdir)) | |
5898 | spa->spa_async_thread = thread_create(NULL, 0, | |
5899 | spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
5900 | mutex_exit(&spa->spa_async_lock); | |
5901 | } | |
5902 | ||
5903 | void | |
5904 | spa_async_request(spa_t *spa, int task) | |
5905 | { | |
428870ff | 5906 | zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task); |
34dc7c2f BB |
5907 | mutex_enter(&spa->spa_async_lock); |
5908 | spa->spa_async_tasks |= task; | |
5909 | mutex_exit(&spa->spa_async_lock); | |
5910 | } | |
5911 | ||
5912 | /* | |
5913 | * ========================================================================== | |
5914 | * SPA syncing routines | |
5915 | * ========================================================================== | |
5916 | */ | |
5917 | ||
428870ff BB |
5918 | static int |
5919 | bpobj_enqueue_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
34dc7c2f | 5920 | { |
428870ff BB |
5921 | bpobj_t *bpo = arg; |
5922 | bpobj_enqueue(bpo, bp, tx); | |
5923 | return (0); | |
5924 | } | |
34dc7c2f | 5925 | |
428870ff BB |
5926 | static int |
5927 | spa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
5928 | { | |
5929 | zio_t *zio = arg; | |
34dc7c2f | 5930 | |
428870ff BB |
5931 | zio_nowait(zio_free_sync(zio, zio->io_spa, dmu_tx_get_txg(tx), bp, |
5932 | zio->io_flags)); | |
5933 | return (0); | |
34dc7c2f BB |
5934 | } |
5935 | ||
e8b96c60 MA |
5936 | /* |
5937 | * Note: this simple function is not inlined to make it easier to dtrace the | |
5938 | * amount of time spent syncing frees. | |
5939 | */ | |
5940 | static void | |
5941 | spa_sync_frees(spa_t *spa, bplist_t *bpl, dmu_tx_t *tx) | |
5942 | { | |
5943 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
5944 | bplist_iterate(bpl, spa_free_sync_cb, zio, tx); | |
5945 | VERIFY(zio_wait(zio) == 0); | |
5946 | } | |
5947 | ||
5948 | /* | |
5949 | * Note: this simple function is not inlined to make it easier to dtrace the | |
5950 | * amount of time spent syncing deferred frees. | |
5951 | */ | |
5952 | static void | |
5953 | spa_sync_deferred_frees(spa_t *spa, dmu_tx_t *tx) | |
5954 | { | |
5955 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
5956 | VERIFY3U(bpobj_iterate(&spa->spa_deferred_bpobj, | |
5957 | spa_free_sync_cb, zio, tx), ==, 0); | |
5958 | VERIFY0(zio_wait(zio)); | |
5959 | } | |
5960 | ||
34dc7c2f BB |
5961 | static void |
5962 | spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) | |
5963 | { | |
5964 | char *packed = NULL; | |
b128c09f | 5965 | size_t bufsize; |
34dc7c2f BB |
5966 | size_t nvsize = 0; |
5967 | dmu_buf_t *db; | |
5968 | ||
5969 | VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
5970 | ||
b128c09f BB |
5971 | /* |
5972 | * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration | |
b0bc7a84 | 5973 | * information. This avoids the dmu_buf_will_dirty() path and |
b128c09f BB |
5974 | * saves us a pre-read to get data we don't actually care about. |
5975 | */ | |
9ae529ec | 5976 | bufsize = P2ROUNDUP((uint64_t)nvsize, SPA_CONFIG_BLOCKSIZE); |
79c76d5b | 5977 | packed = vmem_alloc(bufsize, KM_SLEEP); |
34dc7c2f BB |
5978 | |
5979 | VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
79c76d5b | 5980 | KM_SLEEP) == 0); |
b128c09f | 5981 | bzero(packed + nvsize, bufsize - nvsize); |
34dc7c2f | 5982 | |
b128c09f | 5983 | dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); |
34dc7c2f | 5984 | |
00b46022 | 5985 | vmem_free(packed, bufsize); |
34dc7c2f BB |
5986 | |
5987 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
5988 | dmu_buf_will_dirty(db, tx); | |
5989 | *(uint64_t *)db->db_data = nvsize; | |
5990 | dmu_buf_rele(db, FTAG); | |
5991 | } | |
5992 | ||
5993 | static void | |
5994 | spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, | |
5995 | const char *config, const char *entry) | |
5996 | { | |
5997 | nvlist_t *nvroot; | |
5998 | nvlist_t **list; | |
5999 | int i; | |
6000 | ||
6001 | if (!sav->sav_sync) | |
6002 | return; | |
6003 | ||
6004 | /* | |
6005 | * Update the MOS nvlist describing the list of available devices. | |
6006 | * spa_validate_aux() will have already made sure this nvlist is | |
6007 | * valid and the vdevs are labeled appropriately. | |
6008 | */ | |
6009 | if (sav->sav_object == 0) { | |
6010 | sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
6011 | DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
6012 | sizeof (uint64_t), tx); | |
6013 | VERIFY(zap_update(spa->spa_meta_objset, | |
6014 | DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, | |
6015 | &sav->sav_object, tx) == 0); | |
6016 | } | |
6017 | ||
79c76d5b | 6018 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
34dc7c2f BB |
6019 | if (sav->sav_count == 0) { |
6020 | VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
6021 | } else { | |
79c76d5b | 6022 | list = kmem_alloc(sav->sav_count*sizeof (void *), KM_SLEEP); |
34dc7c2f BB |
6023 | for (i = 0; i < sav->sav_count; i++) |
6024 | list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
428870ff | 6025 | B_FALSE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
6026 | VERIFY(nvlist_add_nvlist_array(nvroot, config, list, |
6027 | sav->sav_count) == 0); | |
6028 | for (i = 0; i < sav->sav_count; i++) | |
6029 | nvlist_free(list[i]); | |
6030 | kmem_free(list, sav->sav_count * sizeof (void *)); | |
6031 | } | |
6032 | ||
6033 | spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); | |
6034 | nvlist_free(nvroot); | |
6035 | ||
6036 | sav->sav_sync = B_FALSE; | |
6037 | } | |
6038 | ||
6039 | static void | |
6040 | spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) | |
6041 | { | |
6042 | nvlist_t *config; | |
6043 | ||
b128c09f | 6044 | if (list_is_empty(&spa->spa_config_dirty_list)) |
34dc7c2f BB |
6045 | return; |
6046 | ||
b128c09f BB |
6047 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
6048 | ||
6049 | config = spa_config_generate(spa, spa->spa_root_vdev, | |
6050 | dmu_tx_get_txg(tx), B_FALSE); | |
6051 | ||
ea0b2538 GW |
6052 | /* |
6053 | * If we're upgrading the spa version then make sure that | |
6054 | * the config object gets updated with the correct version. | |
6055 | */ | |
6056 | if (spa->spa_ubsync.ub_version < spa->spa_uberblock.ub_version) | |
6057 | fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
6058 | spa->spa_uberblock.ub_version); | |
6059 | ||
b128c09f | 6060 | spa_config_exit(spa, SCL_STATE, FTAG); |
34dc7c2f BB |
6061 | |
6062 | if (spa->spa_config_syncing) | |
6063 | nvlist_free(spa->spa_config_syncing); | |
6064 | spa->spa_config_syncing = config; | |
6065 | ||
6066 | spa_sync_nvlist(spa, spa->spa_config_object, config, tx); | |
6067 | } | |
6068 | ||
9ae529ec | 6069 | static void |
13fe0198 | 6070 | spa_sync_version(void *arg, dmu_tx_t *tx) |
9ae529ec | 6071 | { |
13fe0198 MA |
6072 | uint64_t *versionp = arg; |
6073 | uint64_t version = *versionp; | |
6074 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
9ae529ec CS |
6075 | |
6076 | /* | |
6077 | * Setting the version is special cased when first creating the pool. | |
6078 | */ | |
6079 | ASSERT(tx->tx_txg != TXG_INITIAL); | |
6080 | ||
8dca0a9a | 6081 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); |
9ae529ec CS |
6082 | ASSERT(version >= spa_version(spa)); |
6083 | ||
6084 | spa->spa_uberblock.ub_version = version; | |
6085 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 | 6086 | spa_history_log_internal(spa, "set", tx, "version=%lld", version); |
9ae529ec CS |
6087 | } |
6088 | ||
34dc7c2f BB |
6089 | /* |
6090 | * Set zpool properties. | |
6091 | */ | |
6092 | static void | |
13fe0198 | 6093 | spa_sync_props(void *arg, dmu_tx_t *tx) |
34dc7c2f | 6094 | { |
13fe0198 MA |
6095 | nvlist_t *nvp = arg; |
6096 | spa_t *spa = dmu_tx_pool(tx)->dp_spa; | |
34dc7c2f | 6097 | objset_t *mos = spa->spa_meta_objset; |
9ae529ec | 6098 | nvpair_t *elem = NULL; |
b128c09f BB |
6099 | |
6100 | mutex_enter(&spa->spa_props_lock); | |
34dc7c2f | 6101 | |
34dc7c2f | 6102 | while ((elem = nvlist_next_nvpair(nvp, elem))) { |
9ae529ec CS |
6103 | uint64_t intval; |
6104 | char *strval, *fname; | |
6105 | zpool_prop_t prop; | |
6106 | const char *propname; | |
6107 | zprop_type_t proptype; | |
fa86b5db | 6108 | spa_feature_t fid; |
9ae529ec CS |
6109 | |
6110 | prop = zpool_name_to_prop(nvpair_name(elem)); | |
6111 | switch ((int)prop) { | |
6112 | case ZPROP_INVAL: | |
6113 | /* | |
6114 | * We checked this earlier in spa_prop_validate(). | |
6115 | */ | |
6116 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
6117 | ||
6118 | fname = strchr(nvpair_name(elem), '@') + 1; | |
fa86b5db | 6119 | VERIFY0(zfeature_lookup_name(fname, &fid)); |
9ae529ec | 6120 | |
fa86b5db | 6121 | spa_feature_enable(spa, fid, tx); |
6f1ffb06 MA |
6122 | spa_history_log_internal(spa, "set", tx, |
6123 | "%s=enabled", nvpair_name(elem)); | |
9ae529ec CS |
6124 | break; |
6125 | ||
34dc7c2f | 6126 | case ZPOOL_PROP_VERSION: |
93cf2076 | 6127 | intval = fnvpair_value_uint64(elem); |
34dc7c2f | 6128 | /* |
9ae529ec CS |
6129 | * The version is synced seperatly before other |
6130 | * properties and should be correct by now. | |
34dc7c2f | 6131 | */ |
9ae529ec | 6132 | ASSERT3U(spa_version(spa), >=, intval); |
34dc7c2f BB |
6133 | break; |
6134 | ||
6135 | case ZPOOL_PROP_ALTROOT: | |
6136 | /* | |
6137 | * 'altroot' is a non-persistent property. It should | |
6138 | * have been set temporarily at creation or import time. | |
6139 | */ | |
6140 | ASSERT(spa->spa_root != NULL); | |
6141 | break; | |
6142 | ||
572e2857 | 6143 | case ZPOOL_PROP_READONLY: |
34dc7c2f BB |
6144 | case ZPOOL_PROP_CACHEFILE: |
6145 | /* | |
572e2857 BB |
6146 | * 'readonly' and 'cachefile' are also non-persisitent |
6147 | * properties. | |
34dc7c2f | 6148 | */ |
34dc7c2f | 6149 | break; |
d96eb2b1 | 6150 | case ZPOOL_PROP_COMMENT: |
93cf2076 | 6151 | strval = fnvpair_value_string(elem); |
d96eb2b1 DM |
6152 | if (spa->spa_comment != NULL) |
6153 | spa_strfree(spa->spa_comment); | |
6154 | spa->spa_comment = spa_strdup(strval); | |
6155 | /* | |
6156 | * We need to dirty the configuration on all the vdevs | |
6157 | * so that their labels get updated. It's unnecessary | |
6158 | * to do this for pool creation since the vdev's | |
6159 | * configuratoin has already been dirtied. | |
6160 | */ | |
6161 | if (tx->tx_txg != TXG_INITIAL) | |
6162 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 MA |
6163 | spa_history_log_internal(spa, "set", tx, |
6164 | "%s=%s", nvpair_name(elem), strval); | |
d96eb2b1 | 6165 | break; |
34dc7c2f BB |
6166 | default: |
6167 | /* | |
6168 | * Set pool property values in the poolprops mos object. | |
6169 | */ | |
34dc7c2f | 6170 | if (spa->spa_pool_props_object == 0) { |
9ae529ec CS |
6171 | spa->spa_pool_props_object = |
6172 | zap_create_link(mos, DMU_OT_POOL_PROPS, | |
34dc7c2f | 6173 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, |
9ae529ec | 6174 | tx); |
34dc7c2f | 6175 | } |
34dc7c2f BB |
6176 | |
6177 | /* normalize the property name */ | |
6178 | propname = zpool_prop_to_name(prop); | |
6179 | proptype = zpool_prop_get_type(prop); | |
6180 | ||
6181 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
6182 | ASSERT(proptype == PROP_TYPE_STRING); | |
93cf2076 GW |
6183 | strval = fnvpair_value_string(elem); |
6184 | VERIFY0(zap_update(mos, | |
34dc7c2f | 6185 | spa->spa_pool_props_object, propname, |
93cf2076 | 6186 | 1, strlen(strval) + 1, strval, tx)); |
6f1ffb06 MA |
6187 | spa_history_log_internal(spa, "set", tx, |
6188 | "%s=%s", nvpair_name(elem), strval); | |
34dc7c2f | 6189 | } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { |
93cf2076 | 6190 | intval = fnvpair_value_uint64(elem); |
34dc7c2f BB |
6191 | |
6192 | if (proptype == PROP_TYPE_INDEX) { | |
6193 | const char *unused; | |
93cf2076 GW |
6194 | VERIFY0(zpool_prop_index_to_string( |
6195 | prop, intval, &unused)); | |
34dc7c2f | 6196 | } |
93cf2076 | 6197 | VERIFY0(zap_update(mos, |
34dc7c2f | 6198 | spa->spa_pool_props_object, propname, |
93cf2076 | 6199 | 8, 1, &intval, tx)); |
6f1ffb06 MA |
6200 | spa_history_log_internal(spa, "set", tx, |
6201 | "%s=%lld", nvpair_name(elem), intval); | |
34dc7c2f BB |
6202 | } else { |
6203 | ASSERT(0); /* not allowed */ | |
6204 | } | |
6205 | ||
6206 | switch (prop) { | |
6207 | case ZPOOL_PROP_DELEGATION: | |
6208 | spa->spa_delegation = intval; | |
6209 | break; | |
6210 | case ZPOOL_PROP_BOOTFS: | |
6211 | spa->spa_bootfs = intval; | |
6212 | break; | |
6213 | case ZPOOL_PROP_FAILUREMODE: | |
6214 | spa->spa_failmode = intval; | |
6215 | break; | |
9babb374 BB |
6216 | case ZPOOL_PROP_AUTOEXPAND: |
6217 | spa->spa_autoexpand = intval; | |
428870ff BB |
6218 | if (tx->tx_txg != TXG_INITIAL) |
6219 | spa_async_request(spa, | |
6220 | SPA_ASYNC_AUTOEXPAND); | |
6221 | break; | |
6222 | case ZPOOL_PROP_DEDUPDITTO: | |
6223 | spa->spa_dedup_ditto = intval; | |
9babb374 | 6224 | break; |
34dc7c2f BB |
6225 | default: |
6226 | break; | |
6227 | } | |
6228 | } | |
6229 | ||
34dc7c2f | 6230 | } |
b128c09f BB |
6231 | |
6232 | mutex_exit(&spa->spa_props_lock); | |
34dc7c2f BB |
6233 | } |
6234 | ||
428870ff BB |
6235 | /* |
6236 | * Perform one-time upgrade on-disk changes. spa_version() does not | |
6237 | * reflect the new version this txg, so there must be no changes this | |
6238 | * txg to anything that the upgrade code depends on after it executes. | |
6239 | * Therefore this must be called after dsl_pool_sync() does the sync | |
6240 | * tasks. | |
6241 | */ | |
6242 | static void | |
6243 | spa_sync_upgrades(spa_t *spa, dmu_tx_t *tx) | |
6244 | { | |
6245 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
6246 | ||
6247 | ASSERT(spa->spa_sync_pass == 1); | |
6248 | ||
13fe0198 MA |
6249 | rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG); |
6250 | ||
428870ff BB |
6251 | if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && |
6252 | spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { | |
6253 | dsl_pool_create_origin(dp, tx); | |
6254 | ||
6255 | /* Keeping the origin open increases spa_minref */ | |
6256 | spa->spa_minref += 3; | |
6257 | } | |
6258 | ||
6259 | if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && | |
6260 | spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { | |
6261 | dsl_pool_upgrade_clones(dp, tx); | |
6262 | } | |
6263 | ||
6264 | if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES && | |
6265 | spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) { | |
6266 | dsl_pool_upgrade_dir_clones(dp, tx); | |
6267 | ||
6268 | /* Keeping the freedir open increases spa_minref */ | |
6269 | spa->spa_minref += 3; | |
6270 | } | |
9ae529ec CS |
6271 | |
6272 | if (spa->spa_ubsync.ub_version < SPA_VERSION_FEATURES && | |
6273 | spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
6274 | spa_feature_create_zap_objects(spa, tx); | |
6275 | } | |
62bdd5eb DL |
6276 | |
6277 | /* | |
6278 | * LZ4_COMPRESS feature's behaviour was changed to activate_on_enable | |
6279 | * when possibility to use lz4 compression for metadata was added | |
6280 | * Old pools that have this feature enabled must be upgraded to have | |
6281 | * this feature active | |
6282 | */ | |
6283 | if (spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
6284 | boolean_t lz4_en = spa_feature_is_enabled(spa, | |
6285 | SPA_FEATURE_LZ4_COMPRESS); | |
6286 | boolean_t lz4_ac = spa_feature_is_active(spa, | |
6287 | SPA_FEATURE_LZ4_COMPRESS); | |
6288 | ||
6289 | if (lz4_en && !lz4_ac) | |
6290 | spa_feature_incr(spa, SPA_FEATURE_LZ4_COMPRESS, tx); | |
6291 | } | |
13fe0198 | 6292 | rrw_exit(&dp->dp_config_rwlock, FTAG); |
428870ff BB |
6293 | } |
6294 | ||
34dc7c2f BB |
6295 | /* |
6296 | * Sync the specified transaction group. New blocks may be dirtied as | |
6297 | * part of the process, so we iterate until it converges. | |
6298 | */ | |
6299 | void | |
6300 | spa_sync(spa_t *spa, uint64_t txg) | |
6301 | { | |
6302 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
6303 | objset_t *mos = spa->spa_meta_objset; | |
428870ff | 6304 | bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK]; |
34dc7c2f BB |
6305 | vdev_t *rvd = spa->spa_root_vdev; |
6306 | vdev_t *vd; | |
34dc7c2f | 6307 | dmu_tx_t *tx; |
b128c09f | 6308 | int error; |
d6320ddb | 6309 | int c; |
34dc7c2f | 6310 | |
572e2857 BB |
6311 | VERIFY(spa_writeable(spa)); |
6312 | ||
34dc7c2f BB |
6313 | /* |
6314 | * Lock out configuration changes. | |
6315 | */ | |
b128c09f | 6316 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
6317 | |
6318 | spa->spa_syncing_txg = txg; | |
6319 | spa->spa_sync_pass = 0; | |
6320 | ||
b128c09f BB |
6321 | /* |
6322 | * If there are any pending vdev state changes, convert them | |
6323 | * into config changes that go out with this transaction group. | |
6324 | */ | |
6325 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
fb5f0bc8 BB |
6326 | while (list_head(&spa->spa_state_dirty_list) != NULL) { |
6327 | /* | |
6328 | * We need the write lock here because, for aux vdevs, | |
6329 | * calling vdev_config_dirty() modifies sav_config. | |
6330 | * This is ugly and will become unnecessary when we | |
6331 | * eliminate the aux vdev wart by integrating all vdevs | |
6332 | * into the root vdev tree. | |
6333 | */ | |
6334 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
6335 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); | |
6336 | while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { | |
6337 | vdev_state_clean(vd); | |
6338 | vdev_config_dirty(vd); | |
6339 | } | |
6340 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
6341 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
b128c09f BB |
6342 | } |
6343 | spa_config_exit(spa, SCL_STATE, FTAG); | |
6344 | ||
34dc7c2f BB |
6345 | tx = dmu_tx_create_assigned(dp, txg); |
6346 | ||
cc92e9d0 GW |
6347 | spa->spa_sync_starttime = gethrtime(); |
6348 | taskq_cancel_id(system_taskq, spa->spa_deadman_tqid); | |
6349 | spa->spa_deadman_tqid = taskq_dispatch_delay(system_taskq, | |
79c76d5b | 6350 | spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() + |
cc92e9d0 GW |
6351 | NSEC_TO_TICK(spa->spa_deadman_synctime)); |
6352 | ||
34dc7c2f BB |
6353 | /* |
6354 | * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, | |
6355 | * set spa_deflate if we have no raid-z vdevs. | |
6356 | */ | |
6357 | if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && | |
6358 | spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
6359 | int i; | |
6360 | ||
6361 | for (i = 0; i < rvd->vdev_children; i++) { | |
6362 | vd = rvd->vdev_child[i]; | |
6363 | if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
6364 | break; | |
6365 | } | |
6366 | if (i == rvd->vdev_children) { | |
6367 | spa->spa_deflate = TRUE; | |
6368 | VERIFY(0 == zap_add(spa->spa_meta_objset, | |
6369 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
6370 | sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
6371 | } | |
6372 | } | |
6373 | ||
6374 | /* | |
428870ff BB |
6375 | * If anything has changed in this txg, or if someone is waiting |
6376 | * for this txg to sync (eg, spa_vdev_remove()), push the | |
6377 | * deferred frees from the previous txg. If not, leave them | |
6378 | * alone so that we don't generate work on an otherwise idle | |
6379 | * system. | |
34dc7c2f BB |
6380 | */ |
6381 | if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
6382 | !txg_list_empty(&dp->dp_dirty_dirs, txg) || | |
428870ff BB |
6383 | !txg_list_empty(&dp->dp_sync_tasks, txg) || |
6384 | ((dsl_scan_active(dp->dp_scan) || | |
6385 | txg_sync_waiting(dp)) && !spa_shutting_down(spa))) { | |
e8b96c60 | 6386 | spa_sync_deferred_frees(spa, tx); |
428870ff | 6387 | } |
34dc7c2f BB |
6388 | |
6389 | /* | |
6390 | * Iterate to convergence. | |
6391 | */ | |
6392 | do { | |
428870ff | 6393 | int pass = ++spa->spa_sync_pass; |
34dc7c2f BB |
6394 | |
6395 | spa_sync_config_object(spa, tx); | |
6396 | spa_sync_aux_dev(spa, &spa->spa_spares, tx, | |
6397 | ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
6398 | spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
6399 | ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
6400 | spa_errlog_sync(spa, txg); | |
6401 | dsl_pool_sync(dp, txg); | |
6402 | ||
55d85d5a | 6403 | if (pass < zfs_sync_pass_deferred_free) { |
e8b96c60 | 6404 | spa_sync_frees(spa, free_bpl, tx); |
428870ff BB |
6405 | } else { |
6406 | bplist_iterate(free_bpl, bpobj_enqueue_cb, | |
e8b96c60 | 6407 | &spa->spa_deferred_bpobj, tx); |
34dc7c2f BB |
6408 | } |
6409 | ||
428870ff BB |
6410 | ddt_sync(spa, txg); |
6411 | dsl_scan_sync(dp, tx); | |
34dc7c2f | 6412 | |
c65aa5b2 | 6413 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, txg))) |
428870ff BB |
6414 | vdev_sync(vd, txg); |
6415 | ||
6416 | if (pass == 1) | |
6417 | spa_sync_upgrades(spa, tx); | |
34dc7c2f | 6418 | |
428870ff | 6419 | } while (dmu_objset_is_dirty(mos, txg)); |
34dc7c2f BB |
6420 | |
6421 | /* | |
6422 | * Rewrite the vdev configuration (which includes the uberblock) | |
6423 | * to commit the transaction group. | |
6424 | * | |
6425 | * If there are no dirty vdevs, we sync the uberblock to a few | |
6426 | * random top-level vdevs that are known to be visible in the | |
b128c09f BB |
6427 | * config cache (see spa_vdev_add() for a complete description). |
6428 | * If there *are* dirty vdevs, sync the uberblock to all vdevs. | |
34dc7c2f | 6429 | */ |
b128c09f BB |
6430 | for (;;) { |
6431 | /* | |
6432 | * We hold SCL_STATE to prevent vdev open/close/etc. | |
6433 | * while we're attempting to write the vdev labels. | |
6434 | */ | |
6435 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
6436 | ||
6437 | if (list_is_empty(&spa->spa_config_dirty_list)) { | |
6438 | vdev_t *svd[SPA_DVAS_PER_BP]; | |
6439 | int svdcount = 0; | |
6440 | int children = rvd->vdev_children; | |
6441 | int c0 = spa_get_random(children); | |
b128c09f | 6442 | |
d6320ddb | 6443 | for (c = 0; c < children; c++) { |
b128c09f BB |
6444 | vd = rvd->vdev_child[(c0 + c) % children]; |
6445 | if (vd->vdev_ms_array == 0 || vd->vdev_islog) | |
6446 | continue; | |
6447 | svd[svdcount++] = vd; | |
6448 | if (svdcount == SPA_DVAS_PER_BP) | |
6449 | break; | |
6450 | } | |
9babb374 BB |
6451 | error = vdev_config_sync(svd, svdcount, txg, B_FALSE); |
6452 | if (error != 0) | |
6453 | error = vdev_config_sync(svd, svdcount, txg, | |
6454 | B_TRUE); | |
b128c09f BB |
6455 | } else { |
6456 | error = vdev_config_sync(rvd->vdev_child, | |
9babb374 BB |
6457 | rvd->vdev_children, txg, B_FALSE); |
6458 | if (error != 0) | |
6459 | error = vdev_config_sync(rvd->vdev_child, | |
6460 | rvd->vdev_children, txg, B_TRUE); | |
34dc7c2f | 6461 | } |
34dc7c2f | 6462 | |
3bc7e0fb GW |
6463 | if (error == 0) |
6464 | spa->spa_last_synced_guid = rvd->vdev_guid; | |
6465 | ||
b128c09f BB |
6466 | spa_config_exit(spa, SCL_STATE, FTAG); |
6467 | ||
6468 | if (error == 0) | |
6469 | break; | |
6470 | zio_suspend(spa, NULL); | |
6471 | zio_resume_wait(spa); | |
6472 | } | |
34dc7c2f BB |
6473 | dmu_tx_commit(tx); |
6474 | ||
cc92e9d0 GW |
6475 | taskq_cancel_id(system_taskq, spa->spa_deadman_tqid); |
6476 | spa->spa_deadman_tqid = 0; | |
6477 | ||
34dc7c2f BB |
6478 | /* |
6479 | * Clear the dirty config list. | |
6480 | */ | |
b128c09f | 6481 | while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) |
34dc7c2f BB |
6482 | vdev_config_clean(vd); |
6483 | ||
6484 | /* | |
6485 | * Now that the new config has synced transactionally, | |
6486 | * let it become visible to the config cache. | |
6487 | */ | |
6488 | if (spa->spa_config_syncing != NULL) { | |
6489 | spa_config_set(spa, spa->spa_config_syncing); | |
6490 | spa->spa_config_txg = txg; | |
6491 | spa->spa_config_syncing = NULL; | |
6492 | } | |
6493 | ||
34dc7c2f | 6494 | spa->spa_ubsync = spa->spa_uberblock; |
34dc7c2f | 6495 | |
428870ff | 6496 | dsl_pool_sync_done(dp, txg); |
34dc7c2f BB |
6497 | |
6498 | /* | |
6499 | * Update usable space statistics. | |
6500 | */ | |
c65aa5b2 | 6501 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)))) |
34dc7c2f BB |
6502 | vdev_sync_done(vd, txg); |
6503 | ||
428870ff BB |
6504 | spa_update_dspace(spa); |
6505 | ||
34dc7c2f BB |
6506 | /* |
6507 | * It had better be the case that we didn't dirty anything | |
6508 | * since vdev_config_sync(). | |
6509 | */ | |
6510 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
6511 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
6512 | ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
428870ff BB |
6513 | |
6514 | spa->spa_sync_pass = 0; | |
34dc7c2f | 6515 | |
b128c09f | 6516 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f | 6517 | |
428870ff BB |
6518 | spa_handle_ignored_writes(spa); |
6519 | ||
34dc7c2f BB |
6520 | /* |
6521 | * If any async tasks have been requested, kick them off. | |
6522 | */ | |
6523 | spa_async_dispatch(spa); | |
6524 | } | |
6525 | ||
6526 | /* | |
6527 | * Sync all pools. We don't want to hold the namespace lock across these | |
6528 | * operations, so we take a reference on the spa_t and drop the lock during the | |
6529 | * sync. | |
6530 | */ | |
6531 | void | |
6532 | spa_sync_allpools(void) | |
6533 | { | |
6534 | spa_t *spa = NULL; | |
6535 | mutex_enter(&spa_namespace_lock); | |
6536 | while ((spa = spa_next(spa)) != NULL) { | |
572e2857 BB |
6537 | if (spa_state(spa) != POOL_STATE_ACTIVE || |
6538 | !spa_writeable(spa) || spa_suspended(spa)) | |
34dc7c2f BB |
6539 | continue; |
6540 | spa_open_ref(spa, FTAG); | |
6541 | mutex_exit(&spa_namespace_lock); | |
6542 | txg_wait_synced(spa_get_dsl(spa), 0); | |
6543 | mutex_enter(&spa_namespace_lock); | |
6544 | spa_close(spa, FTAG); | |
6545 | } | |
6546 | mutex_exit(&spa_namespace_lock); | |
6547 | } | |
6548 | ||
6549 | /* | |
6550 | * ========================================================================== | |
6551 | * Miscellaneous routines | |
6552 | * ========================================================================== | |
6553 | */ | |
6554 | ||
6555 | /* | |
6556 | * Remove all pools in the system. | |
6557 | */ | |
6558 | void | |
6559 | spa_evict_all(void) | |
6560 | { | |
6561 | spa_t *spa; | |
6562 | ||
6563 | /* | |
6564 | * Remove all cached state. All pools should be closed now, | |
6565 | * so every spa in the AVL tree should be unreferenced. | |
6566 | */ | |
6567 | mutex_enter(&spa_namespace_lock); | |
6568 | while ((spa = spa_next(NULL)) != NULL) { | |
6569 | /* | |
6570 | * Stop async tasks. The async thread may need to detach | |
6571 | * a device that's been replaced, which requires grabbing | |
6572 | * spa_namespace_lock, so we must drop it here. | |
6573 | */ | |
6574 | spa_open_ref(spa, FTAG); | |
6575 | mutex_exit(&spa_namespace_lock); | |
6576 | spa_async_suspend(spa); | |
6577 | mutex_enter(&spa_namespace_lock); | |
34dc7c2f BB |
6578 | spa_close(spa, FTAG); |
6579 | ||
6580 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
6581 | spa_unload(spa); | |
6582 | spa_deactivate(spa); | |
6583 | } | |
6584 | spa_remove(spa); | |
6585 | } | |
6586 | mutex_exit(&spa_namespace_lock); | |
6587 | } | |
6588 | ||
6589 | vdev_t * | |
9babb374 | 6590 | spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux) |
34dc7c2f | 6591 | { |
b128c09f BB |
6592 | vdev_t *vd; |
6593 | int i; | |
6594 | ||
6595 | if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) | |
6596 | return (vd); | |
6597 | ||
9babb374 | 6598 | if (aux) { |
b128c09f BB |
6599 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
6600 | vd = spa->spa_l2cache.sav_vdevs[i]; | |
9babb374 BB |
6601 | if (vd->vdev_guid == guid) |
6602 | return (vd); | |
6603 | } | |
6604 | ||
6605 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
6606 | vd = spa->spa_spares.sav_vdevs[i]; | |
b128c09f BB |
6607 | if (vd->vdev_guid == guid) |
6608 | return (vd); | |
6609 | } | |
6610 | } | |
6611 | ||
6612 | return (NULL); | |
34dc7c2f BB |
6613 | } |
6614 | ||
6615 | void | |
6616 | spa_upgrade(spa_t *spa, uint64_t version) | |
6617 | { | |
572e2857 BB |
6618 | ASSERT(spa_writeable(spa)); |
6619 | ||
b128c09f | 6620 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
6621 | |
6622 | /* | |
6623 | * This should only be called for a non-faulted pool, and since a | |
6624 | * future version would result in an unopenable pool, this shouldn't be | |
6625 | * possible. | |
6626 | */ | |
8dca0a9a | 6627 | ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version)); |
9b67f605 | 6628 | ASSERT3U(version, >=, spa->spa_uberblock.ub_version); |
34dc7c2f BB |
6629 | |
6630 | spa->spa_uberblock.ub_version = version; | |
6631 | vdev_config_dirty(spa->spa_root_vdev); | |
6632 | ||
b128c09f | 6633 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
6634 | |
6635 | txg_wait_synced(spa_get_dsl(spa), 0); | |
6636 | } | |
6637 | ||
6638 | boolean_t | |
6639 | spa_has_spare(spa_t *spa, uint64_t guid) | |
6640 | { | |
6641 | int i; | |
6642 | uint64_t spareguid; | |
6643 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
6644 | ||
6645 | for (i = 0; i < sav->sav_count; i++) | |
6646 | if (sav->sav_vdevs[i]->vdev_guid == guid) | |
6647 | return (B_TRUE); | |
6648 | ||
6649 | for (i = 0; i < sav->sav_npending; i++) { | |
6650 | if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
6651 | &spareguid) == 0 && spareguid == guid) | |
6652 | return (B_TRUE); | |
6653 | } | |
6654 | ||
6655 | return (B_FALSE); | |
6656 | } | |
6657 | ||
b128c09f BB |
6658 | /* |
6659 | * Check if a pool has an active shared spare device. | |
6660 | * Note: reference count of an active spare is 2, as a spare and as a replace | |
6661 | */ | |
6662 | static boolean_t | |
6663 | spa_has_active_shared_spare(spa_t *spa) | |
6664 | { | |
6665 | int i, refcnt; | |
6666 | uint64_t pool; | |
6667 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
6668 | ||
6669 | for (i = 0; i < sav->sav_count; i++) { | |
6670 | if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, | |
6671 | &refcnt) && pool != 0ULL && pool == spa_guid(spa) && | |
6672 | refcnt > 2) | |
6673 | return (B_TRUE); | |
6674 | } | |
6675 | ||
6676 | return (B_FALSE); | |
6677 | } | |
6678 | ||
34dc7c2f | 6679 | /* |
26685276 | 6680 | * Post a FM_EREPORT_ZFS_* event from sys/fm/fs/zfs.h. The payload will be |
34dc7c2f BB |
6681 | * filled in from the spa and (optionally) the vdev. This doesn't do anything |
6682 | * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
6683 | * or zdb as real changes. | |
6684 | */ | |
6685 | void | |
6686 | spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
6687 | { | |
6688 | #ifdef _KERNEL | |
26685276 | 6689 | zfs_ereport_post(name, spa, vd, NULL, 0, 0); |
34dc7c2f BB |
6690 | #endif |
6691 | } | |
c28b2279 BB |
6692 | |
6693 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
6694 | /* state manipulation functions */ | |
6695 | EXPORT_SYMBOL(spa_open); | |
6696 | EXPORT_SYMBOL(spa_open_rewind); | |
6697 | EXPORT_SYMBOL(spa_get_stats); | |
6698 | EXPORT_SYMBOL(spa_create); | |
6699 | EXPORT_SYMBOL(spa_import_rootpool); | |
6700 | EXPORT_SYMBOL(spa_import); | |
6701 | EXPORT_SYMBOL(spa_tryimport); | |
6702 | EXPORT_SYMBOL(spa_destroy); | |
6703 | EXPORT_SYMBOL(spa_export); | |
6704 | EXPORT_SYMBOL(spa_reset); | |
6705 | EXPORT_SYMBOL(spa_async_request); | |
6706 | EXPORT_SYMBOL(spa_async_suspend); | |
6707 | EXPORT_SYMBOL(spa_async_resume); | |
6708 | EXPORT_SYMBOL(spa_inject_addref); | |
6709 | EXPORT_SYMBOL(spa_inject_delref); | |
6710 | EXPORT_SYMBOL(spa_scan_stat_init); | |
6711 | EXPORT_SYMBOL(spa_scan_get_stats); | |
6712 | ||
6713 | /* device maniion */ | |
6714 | EXPORT_SYMBOL(spa_vdev_add); | |
6715 | EXPORT_SYMBOL(spa_vdev_attach); | |
6716 | EXPORT_SYMBOL(spa_vdev_detach); | |
6717 | EXPORT_SYMBOL(spa_vdev_remove); | |
6718 | EXPORT_SYMBOL(spa_vdev_setpath); | |
6719 | EXPORT_SYMBOL(spa_vdev_setfru); | |
6720 | EXPORT_SYMBOL(spa_vdev_split_mirror); | |
6721 | ||
6722 | /* spare statech is global across all pools) */ | |
6723 | EXPORT_SYMBOL(spa_spare_add); | |
6724 | EXPORT_SYMBOL(spa_spare_remove); | |
6725 | EXPORT_SYMBOL(spa_spare_exists); | |
6726 | EXPORT_SYMBOL(spa_spare_activate); | |
6727 | ||
6728 | /* L2ARC statech is global across all pools) */ | |
6729 | EXPORT_SYMBOL(spa_l2cache_add); | |
6730 | EXPORT_SYMBOL(spa_l2cache_remove); | |
6731 | EXPORT_SYMBOL(spa_l2cache_exists); | |
6732 | EXPORT_SYMBOL(spa_l2cache_activate); | |
6733 | EXPORT_SYMBOL(spa_l2cache_drop); | |
6734 | ||
6735 | /* scanning */ | |
6736 | EXPORT_SYMBOL(spa_scan); | |
6737 | EXPORT_SYMBOL(spa_scan_stop); | |
6738 | ||
6739 | /* spa syncing */ | |
6740 | EXPORT_SYMBOL(spa_sync); /* only for DMU use */ | |
6741 | EXPORT_SYMBOL(spa_sync_allpools); | |
6742 | ||
6743 | /* properties */ | |
6744 | EXPORT_SYMBOL(spa_prop_set); | |
6745 | EXPORT_SYMBOL(spa_prop_get); | |
6746 | EXPORT_SYMBOL(spa_prop_clear_bootfs); | |
6747 | ||
6748 | /* asynchronous event notification */ | |
6749 | EXPORT_SYMBOL(spa_event_notify); | |
6750 | #endif | |
dea377c0 MA |
6751 | |
6752 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
6753 | module_param(spa_load_verify_maxinflight, int, 0644); | |
6754 | MODULE_PARM_DESC(spa_load_verify_maxinflight, | |
6755 | "Max concurrent traversal I/Os while verifying pool during import -X"); | |
6756 | ||
6757 | module_param(spa_load_verify_metadata, int, 0644); | |
6758 | MODULE_PARM_DESC(spa_load_verify_metadata, | |
6759 | "Set to traverse metadata on pool import"); | |
6760 | ||
6761 | module_param(spa_load_verify_data, int, 0644); | |
6762 | MODULE_PARM_DESC(spa_load_verify_data, | |
6763 | "Set to traverse data on pool import"); | |
6764 | #endif |