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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. |
a38718a6 | 24 | * Copyright 2011 Nexenta Systems, Inc. All rights reserved. |
1bd201e7 | 25 | * Copyright (c) 2012 by Delphix. All rights reserved. |
a38718a6 | 26 | */ |
34dc7c2f | 27 | |
34dc7c2f BB |
28 | /* |
29 | * This file contains all the routines used when modifying on-disk SPA state. | |
30 | * This includes opening, importing, destroying, exporting a pool, and syncing a | |
31 | * pool. | |
32 | */ | |
33 | ||
34 | #include <sys/zfs_context.h> | |
35 | #include <sys/fm/fs/zfs.h> | |
36 | #include <sys/spa_impl.h> | |
37 | #include <sys/zio.h> | |
38 | #include <sys/zio_checksum.h> | |
34dc7c2f BB |
39 | #include <sys/dmu.h> |
40 | #include <sys/dmu_tx.h> | |
41 | #include <sys/zap.h> | |
42 | #include <sys/zil.h> | |
428870ff | 43 | #include <sys/ddt.h> |
34dc7c2f | 44 | #include <sys/vdev_impl.h> |
c28b2279 | 45 | #include <sys/vdev_disk.h> |
34dc7c2f | 46 | #include <sys/metaslab.h> |
428870ff | 47 | #include <sys/metaslab_impl.h> |
34dc7c2f BB |
48 | #include <sys/uberblock_impl.h> |
49 | #include <sys/txg.h> | |
50 | #include <sys/avl.h> | |
51 | #include <sys/dmu_traverse.h> | |
52 | #include <sys/dmu_objset.h> | |
53 | #include <sys/unique.h> | |
54 | #include <sys/dsl_pool.h> | |
55 | #include <sys/dsl_dataset.h> | |
56 | #include <sys/dsl_dir.h> | |
57 | #include <sys/dsl_prop.h> | |
58 | #include <sys/dsl_synctask.h> | |
59 | #include <sys/fs/zfs.h> | |
60 | #include <sys/arc.h> | |
61 | #include <sys/callb.h> | |
62 | #include <sys/systeminfo.h> | |
34dc7c2f | 63 | #include <sys/spa_boot.h> |
9babb374 | 64 | #include <sys/zfs_ioctl.h> |
428870ff | 65 | #include <sys/dsl_scan.h> |
9ae529ec | 66 | #include <sys/zfeature.h> |
526af785 | 67 | #include <sys/zvol.h> |
34dc7c2f | 68 | |
d164b209 | 69 | #ifdef _KERNEL |
428870ff BB |
70 | #include <sys/bootprops.h> |
71 | #include <sys/callb.h> | |
72 | #include <sys/cpupart.h> | |
73 | #include <sys/pool.h> | |
74 | #include <sys/sysdc.h> | |
d164b209 BB |
75 | #include <sys/zone.h> |
76 | #endif /* _KERNEL */ | |
77 | ||
34dc7c2f BB |
78 | #include "zfs_prop.h" |
79 | #include "zfs_comutil.h" | |
80 | ||
428870ff | 81 | typedef enum zti_modes { |
7ef5e54e AL |
82 | ZTI_MODE_FIXED, /* value is # of threads (min 1) */ |
83 | ZTI_MODE_ONLINE_PERCENT, /* value is % of online CPUs */ | |
84 | ZTI_MODE_BATCH, /* cpu-intensive; value is ignored */ | |
85 | ZTI_MODE_NULL, /* don't create a taskq */ | |
86 | ZTI_NMODES | |
428870ff | 87 | } zti_modes_t; |
34dc7c2f | 88 | |
7ef5e54e AL |
89 | #define ZTI_P(n, q) { ZTI_MODE_FIXED, (n), (q) } |
90 | #define ZTI_PCT(n) { ZTI_MODE_ONLINE_PERCENT, (n), 1 } | |
91 | #define ZTI_BATCH { ZTI_MODE_BATCH, 0, 1 } | |
92 | #define ZTI_NULL { ZTI_MODE_NULL, 0, 0 } | |
9babb374 | 93 | |
7ef5e54e AL |
94 | #define ZTI_N(n) ZTI_P(n, 1) |
95 | #define ZTI_ONE ZTI_N(1) | |
9babb374 BB |
96 | |
97 | typedef struct zio_taskq_info { | |
7ef5e54e | 98 | zti_modes_t zti_mode; |
428870ff | 99 | uint_t zti_value; |
7ef5e54e | 100 | uint_t zti_count; |
9babb374 BB |
101 | } zio_taskq_info_t; |
102 | ||
103 | static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = { | |
451041db | 104 | "iss", "iss_h", "int", "int_h" |
9babb374 BB |
105 | }; |
106 | ||
428870ff | 107 | /* |
7ef5e54e AL |
108 | * This table defines the taskq settings for each ZFS I/O type. When |
109 | * initializing a pool, we use this table to create an appropriately sized | |
110 | * taskq. Some operations are low volume and therefore have a small, static | |
111 | * number of threads assigned to their taskqs using the ZTI_N(#) or ZTI_ONE | |
112 | * macros. Other operations process a large amount of data; the ZTI_BATCH | |
113 | * macro causes us to create a taskq oriented for throughput. Some operations | |
114 | * are so high frequency and short-lived that the taskq itself can become a a | |
115 | * point of lock contention. The ZTI_P(#, #) macro indicates that we need an | |
116 | * additional degree of parallelism specified by the number of threads per- | |
117 | * taskq and the number of taskqs; when dispatching an event in this case, the | |
118 | * particular taskq is chosen at random. | |
119 | * | |
120 | * The different taskq priorities are to handle the different contexts (issue | |
121 | * and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that | |
122 | * need to be handled with minimum delay. | |
428870ff BB |
123 | */ |
124 | const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = { | |
125 | /* ISSUE ISSUE_HIGH INTR INTR_HIGH */ | |
7ef5e54e AL |
126 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */ |
127 | { ZTI_N(8), ZTI_NULL, ZTI_BATCH, ZTI_NULL }, /* READ */ | |
128 | { ZTI_BATCH, ZTI_N(5), ZTI_N(16), ZTI_N(5) }, /* WRITE */ | |
129 | { ZTI_P(4, 8), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* FREE */ | |
130 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* CLAIM */ | |
131 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* IOCTL */ | |
9babb374 BB |
132 | }; |
133 | ||
9ae529ec | 134 | static dsl_syncfunc_t spa_sync_version; |
428870ff | 135 | static dsl_syncfunc_t spa_sync_props; |
3bc7e0fb GW |
136 | static dsl_checkfunc_t spa_change_guid_check; |
137 | static dsl_syncfunc_t spa_change_guid_sync; | |
b128c09f | 138 | static boolean_t spa_has_active_shared_spare(spa_t *spa); |
bf701a83 | 139 | static inline int spa_load_impl(spa_t *spa, uint64_t, nvlist_t *config, |
428870ff BB |
140 | spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, |
141 | char **ereport); | |
572e2857 | 142 | static void spa_vdev_resilver_done(spa_t *spa); |
428870ff BB |
143 | |
144 | uint_t zio_taskq_batch_pct = 100; /* 1 thread per cpu in pset */ | |
145 | id_t zio_taskq_psrset_bind = PS_NONE; | |
146 | boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */ | |
147 | uint_t zio_taskq_basedc = 80; /* base duty cycle */ | |
148 | ||
149 | boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ | |
150 | ||
151 | /* | |
152 | * This (illegal) pool name is used when temporarily importing a spa_t in order | |
153 | * to get the vdev stats associated with the imported devices. | |
154 | */ | |
155 | #define TRYIMPORT_NAME "$import" | |
34dc7c2f BB |
156 | |
157 | /* | |
158 | * ========================================================================== | |
159 | * SPA properties routines | |
160 | * ========================================================================== | |
161 | */ | |
162 | ||
163 | /* | |
164 | * Add a (source=src, propname=propval) list to an nvlist. | |
165 | */ | |
166 | static void | |
167 | spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, | |
168 | uint64_t intval, zprop_source_t src) | |
169 | { | |
170 | const char *propname = zpool_prop_to_name(prop); | |
171 | nvlist_t *propval; | |
172 | ||
b8d06fca | 173 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
34dc7c2f BB |
174 | VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); |
175 | ||
176 | if (strval != NULL) | |
177 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); | |
178 | else | |
179 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); | |
180 | ||
181 | VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); | |
182 | nvlist_free(propval); | |
183 | } | |
184 | ||
185 | /* | |
186 | * Get property values from the spa configuration. | |
187 | */ | |
188 | static void | |
189 | spa_prop_get_config(spa_t *spa, nvlist_t **nvp) | |
190 | { | |
1bd201e7 | 191 | vdev_t *rvd = spa->spa_root_vdev; |
9ae529ec | 192 | dsl_pool_t *pool = spa->spa_dsl_pool; |
d164b209 | 193 | uint64_t size; |
428870ff | 194 | uint64_t alloc; |
1bd201e7 | 195 | uint64_t space; |
34dc7c2f BB |
196 | uint64_t cap, version; |
197 | zprop_source_t src = ZPROP_SRC_NONE; | |
b128c09f | 198 | spa_config_dirent_t *dp; |
1bd201e7 | 199 | int c; |
b128c09f BB |
200 | |
201 | ASSERT(MUTEX_HELD(&spa->spa_props_lock)); | |
34dc7c2f | 202 | |
1bd201e7 | 203 | if (rvd != NULL) { |
428870ff BB |
204 | alloc = metaslab_class_get_alloc(spa_normal_class(spa)); |
205 | size = metaslab_class_get_space(spa_normal_class(spa)); | |
d164b209 BB |
206 | spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); |
207 | spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); | |
428870ff BB |
208 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src); |
209 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL, | |
210 | size - alloc, src); | |
1bd201e7 CS |
211 | |
212 | space = 0; | |
213 | for (c = 0; c < rvd->vdev_children; c++) { | |
214 | vdev_t *tvd = rvd->vdev_child[c]; | |
215 | space += tvd->vdev_max_asize - tvd->vdev_asize; | |
216 | } | |
217 | spa_prop_add_list(*nvp, ZPOOL_PROP_EXPANDSZ, NULL, space, | |
218 | src); | |
219 | ||
572e2857 BB |
220 | spa_prop_add_list(*nvp, ZPOOL_PROP_READONLY, NULL, |
221 | (spa_mode(spa) == FREAD), src); | |
d164b209 | 222 | |
428870ff | 223 | cap = (size == 0) ? 0 : (alloc * 100 / size); |
d164b209 BB |
224 | spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); |
225 | ||
428870ff BB |
226 | spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL, |
227 | ddt_get_pool_dedup_ratio(spa), src); | |
228 | ||
d164b209 | 229 | spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, |
1bd201e7 | 230 | rvd->vdev_state, src); |
d164b209 BB |
231 | |
232 | version = spa_version(spa); | |
233 | if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) | |
234 | src = ZPROP_SRC_DEFAULT; | |
235 | else | |
236 | src = ZPROP_SRC_LOCAL; | |
237 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, version, src); | |
238 | } | |
34dc7c2f | 239 | |
9ae529ec CS |
240 | if (pool != NULL) { |
241 | dsl_dir_t *freedir = pool->dp_free_dir; | |
242 | ||
243 | /* | |
244 | * The $FREE directory was introduced in SPA_VERSION_DEADLISTS, | |
245 | * when opening pools before this version freedir will be NULL. | |
246 | */ | |
247 | if (freedir != NULL) { | |
248 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, NULL, | |
249 | freedir->dd_phys->dd_used_bytes, src); | |
250 | } else { | |
251 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, | |
252 | NULL, 0, src); | |
253 | } | |
254 | } | |
255 | ||
34dc7c2f | 256 | spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); |
34dc7c2f | 257 | |
d96eb2b1 DM |
258 | if (spa->spa_comment != NULL) { |
259 | spa_prop_add_list(*nvp, ZPOOL_PROP_COMMENT, spa->spa_comment, | |
260 | 0, ZPROP_SRC_LOCAL); | |
261 | } | |
262 | ||
34dc7c2f BB |
263 | if (spa->spa_root != NULL) |
264 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, | |
265 | 0, ZPROP_SRC_LOCAL); | |
266 | ||
b128c09f BB |
267 | if ((dp = list_head(&spa->spa_config_list)) != NULL) { |
268 | if (dp->scd_path == NULL) { | |
34dc7c2f | 269 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f BB |
270 | "none", 0, ZPROP_SRC_LOCAL); |
271 | } else if (strcmp(dp->scd_path, spa_config_path) != 0) { | |
34dc7c2f | 272 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f | 273 | dp->scd_path, 0, ZPROP_SRC_LOCAL); |
34dc7c2f BB |
274 | } |
275 | } | |
276 | } | |
277 | ||
278 | /* | |
279 | * Get zpool property values. | |
280 | */ | |
281 | int | |
282 | spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
283 | { | |
428870ff | 284 | objset_t *mos = spa->spa_meta_objset; |
34dc7c2f BB |
285 | zap_cursor_t zc; |
286 | zap_attribute_t za; | |
34dc7c2f BB |
287 | int err; |
288 | ||
b8d06fca | 289 | err = nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_PUSHPAGE); |
c28b2279 BB |
290 | if (err) |
291 | return err; | |
34dc7c2f | 292 | |
b128c09f BB |
293 | mutex_enter(&spa->spa_props_lock); |
294 | ||
34dc7c2f BB |
295 | /* |
296 | * Get properties from the spa config. | |
297 | */ | |
298 | spa_prop_get_config(spa, nvp); | |
299 | ||
34dc7c2f | 300 | /* If no pool property object, no more prop to get. */ |
428870ff | 301 | if (mos == NULL || spa->spa_pool_props_object == 0) { |
34dc7c2f | 302 | mutex_exit(&spa->spa_props_lock); |
c28b2279 | 303 | goto out; |
34dc7c2f BB |
304 | } |
305 | ||
306 | /* | |
307 | * Get properties from the MOS pool property object. | |
308 | */ | |
309 | for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
310 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
311 | zap_cursor_advance(&zc)) { | |
312 | uint64_t intval = 0; | |
313 | char *strval = NULL; | |
314 | zprop_source_t src = ZPROP_SRC_DEFAULT; | |
315 | zpool_prop_t prop; | |
316 | ||
317 | if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL) | |
318 | continue; | |
319 | ||
320 | switch (za.za_integer_length) { | |
321 | case 8: | |
322 | /* integer property */ | |
323 | if (za.za_first_integer != | |
324 | zpool_prop_default_numeric(prop)) | |
325 | src = ZPROP_SRC_LOCAL; | |
326 | ||
327 | if (prop == ZPOOL_PROP_BOOTFS) { | |
328 | dsl_pool_t *dp; | |
329 | dsl_dataset_t *ds = NULL; | |
330 | ||
331 | dp = spa_get_dsl(spa); | |
332 | rw_enter(&dp->dp_config_rwlock, RW_READER); | |
c65aa5b2 BB |
333 | if ((err = dsl_dataset_hold_obj(dp, |
334 | za.za_first_integer, FTAG, &ds))) { | |
34dc7c2f BB |
335 | rw_exit(&dp->dp_config_rwlock); |
336 | break; | |
337 | } | |
338 | ||
339 | strval = kmem_alloc( | |
340 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, | |
b8d06fca | 341 | KM_PUSHPAGE); |
34dc7c2f | 342 | dsl_dataset_name(ds, strval); |
b128c09f | 343 | dsl_dataset_rele(ds, FTAG); |
34dc7c2f BB |
344 | rw_exit(&dp->dp_config_rwlock); |
345 | } else { | |
346 | strval = NULL; | |
347 | intval = za.za_first_integer; | |
348 | } | |
349 | ||
350 | spa_prop_add_list(*nvp, prop, strval, intval, src); | |
351 | ||
352 | if (strval != NULL) | |
353 | kmem_free(strval, | |
354 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); | |
355 | ||
356 | break; | |
357 | ||
358 | case 1: | |
359 | /* string property */ | |
b8d06fca | 360 | strval = kmem_alloc(za.za_num_integers, KM_PUSHPAGE); |
34dc7c2f BB |
361 | err = zap_lookup(mos, spa->spa_pool_props_object, |
362 | za.za_name, 1, za.za_num_integers, strval); | |
363 | if (err) { | |
364 | kmem_free(strval, za.za_num_integers); | |
365 | break; | |
366 | } | |
367 | spa_prop_add_list(*nvp, prop, strval, 0, src); | |
368 | kmem_free(strval, za.za_num_integers); | |
369 | break; | |
370 | ||
371 | default: | |
372 | break; | |
373 | } | |
374 | } | |
375 | zap_cursor_fini(&zc); | |
376 | mutex_exit(&spa->spa_props_lock); | |
377 | out: | |
378 | if (err && err != ENOENT) { | |
379 | nvlist_free(*nvp); | |
380 | *nvp = NULL; | |
381 | return (err); | |
382 | } | |
383 | ||
384 | return (0); | |
385 | } | |
386 | ||
387 | /* | |
388 | * Validate the given pool properties nvlist and modify the list | |
389 | * for the property values to be set. | |
390 | */ | |
391 | static int | |
392 | spa_prop_validate(spa_t *spa, nvlist_t *props) | |
393 | { | |
394 | nvpair_t *elem; | |
395 | int error = 0, reset_bootfs = 0; | |
d4ed6673 | 396 | uint64_t objnum = 0; |
9ae529ec | 397 | boolean_t has_feature = B_FALSE; |
34dc7c2f BB |
398 | |
399 | elem = NULL; | |
400 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
34dc7c2f | 401 | uint64_t intval; |
9ae529ec CS |
402 | char *strval, *slash, *check, *fname; |
403 | const char *propname = nvpair_name(elem); | |
404 | zpool_prop_t prop = zpool_name_to_prop(propname); | |
405 | ||
406 | switch ((int)prop) { | |
407 | case ZPROP_INVAL: | |
408 | if (!zpool_prop_feature(propname)) { | |
409 | error = EINVAL; | |
410 | break; | |
411 | } | |
412 | ||
413 | /* | |
414 | * Sanitize the input. | |
415 | */ | |
416 | if (nvpair_type(elem) != DATA_TYPE_UINT64) { | |
417 | error = EINVAL; | |
418 | break; | |
419 | } | |
420 | ||
421 | if (nvpair_value_uint64(elem, &intval) != 0) { | |
422 | error = EINVAL; | |
423 | break; | |
424 | } | |
34dc7c2f | 425 | |
9ae529ec CS |
426 | if (intval != 0) { |
427 | error = EINVAL; | |
428 | break; | |
429 | } | |
34dc7c2f | 430 | |
9ae529ec CS |
431 | fname = strchr(propname, '@') + 1; |
432 | if (zfeature_lookup_name(fname, NULL) != 0) { | |
433 | error = EINVAL; | |
434 | break; | |
435 | } | |
436 | ||
437 | has_feature = B_TRUE; | |
438 | break; | |
34dc7c2f | 439 | |
34dc7c2f BB |
440 | case ZPOOL_PROP_VERSION: |
441 | error = nvpair_value_uint64(elem, &intval); | |
442 | if (!error && | |
9ae529ec CS |
443 | (intval < spa_version(spa) || |
444 | intval > SPA_VERSION_BEFORE_FEATURES || | |
445 | has_feature)) | |
34dc7c2f BB |
446 | error = EINVAL; |
447 | break; | |
448 | ||
449 | case ZPOOL_PROP_DELEGATION: | |
450 | case ZPOOL_PROP_AUTOREPLACE: | |
b128c09f | 451 | case ZPOOL_PROP_LISTSNAPS: |
9babb374 | 452 | case ZPOOL_PROP_AUTOEXPAND: |
34dc7c2f BB |
453 | error = nvpair_value_uint64(elem, &intval); |
454 | if (!error && intval > 1) | |
455 | error = EINVAL; | |
456 | break; | |
457 | ||
458 | case ZPOOL_PROP_BOOTFS: | |
9babb374 BB |
459 | /* |
460 | * If the pool version is less than SPA_VERSION_BOOTFS, | |
461 | * or the pool is still being created (version == 0), | |
462 | * the bootfs property cannot be set. | |
463 | */ | |
34dc7c2f BB |
464 | if (spa_version(spa) < SPA_VERSION_BOOTFS) { |
465 | error = ENOTSUP; | |
466 | break; | |
467 | } | |
468 | ||
469 | /* | |
b128c09f | 470 | * Make sure the vdev config is bootable |
34dc7c2f | 471 | */ |
b128c09f | 472 | if (!vdev_is_bootable(spa->spa_root_vdev)) { |
34dc7c2f BB |
473 | error = ENOTSUP; |
474 | break; | |
475 | } | |
476 | ||
477 | reset_bootfs = 1; | |
478 | ||
479 | error = nvpair_value_string(elem, &strval); | |
480 | ||
481 | if (!error) { | |
9ae529ec | 482 | objset_t *os; |
b128c09f BB |
483 | uint64_t compress; |
484 | ||
34dc7c2f BB |
485 | if (strval == NULL || strval[0] == '\0') { |
486 | objnum = zpool_prop_default_numeric( | |
487 | ZPOOL_PROP_BOOTFS); | |
488 | break; | |
489 | } | |
490 | ||
c65aa5b2 | 491 | if ((error = dmu_objset_hold(strval,FTAG,&os))) |
34dc7c2f | 492 | break; |
b128c09f | 493 | |
428870ff BB |
494 | /* Must be ZPL and not gzip compressed. */ |
495 | ||
496 | if (dmu_objset_type(os) != DMU_OST_ZFS) { | |
497 | error = ENOTSUP; | |
498 | } else if ((error = dsl_prop_get_integer(strval, | |
b128c09f BB |
499 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), |
500 | &compress, NULL)) == 0 && | |
501 | !BOOTFS_COMPRESS_VALID(compress)) { | |
502 | error = ENOTSUP; | |
503 | } else { | |
504 | objnum = dmu_objset_id(os); | |
505 | } | |
428870ff | 506 | dmu_objset_rele(os, FTAG); |
34dc7c2f BB |
507 | } |
508 | break; | |
b128c09f | 509 | |
34dc7c2f BB |
510 | case ZPOOL_PROP_FAILUREMODE: |
511 | error = nvpair_value_uint64(elem, &intval); | |
512 | if (!error && (intval < ZIO_FAILURE_MODE_WAIT || | |
513 | intval > ZIO_FAILURE_MODE_PANIC)) | |
514 | error = EINVAL; | |
515 | ||
516 | /* | |
517 | * This is a special case which only occurs when | |
518 | * the pool has completely failed. This allows | |
519 | * the user to change the in-core failmode property | |
520 | * without syncing it out to disk (I/Os might | |
521 | * currently be blocked). We do this by returning | |
522 | * EIO to the caller (spa_prop_set) to trick it | |
523 | * into thinking we encountered a property validation | |
524 | * error. | |
525 | */ | |
b128c09f | 526 | if (!error && spa_suspended(spa)) { |
34dc7c2f BB |
527 | spa->spa_failmode = intval; |
528 | error = EIO; | |
529 | } | |
530 | break; | |
531 | ||
532 | case ZPOOL_PROP_CACHEFILE: | |
533 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
534 | break; | |
535 | ||
536 | if (strval[0] == '\0') | |
537 | break; | |
538 | ||
539 | if (strcmp(strval, "none") == 0) | |
540 | break; | |
541 | ||
542 | if (strval[0] != '/') { | |
543 | error = EINVAL; | |
544 | break; | |
545 | } | |
546 | ||
547 | slash = strrchr(strval, '/'); | |
548 | ASSERT(slash != NULL); | |
549 | ||
550 | if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
551 | strcmp(slash, "/..") == 0) | |
552 | error = EINVAL; | |
553 | break; | |
428870ff | 554 | |
d96eb2b1 DM |
555 | case ZPOOL_PROP_COMMENT: |
556 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
557 | break; | |
558 | for (check = strval; *check != '\0'; check++) { | |
559 | if (!isprint(*check)) { | |
560 | error = EINVAL; | |
561 | break; | |
562 | } | |
563 | check++; | |
564 | } | |
565 | if (strlen(strval) > ZPROP_MAX_COMMENT) | |
566 | error = E2BIG; | |
567 | break; | |
568 | ||
428870ff BB |
569 | case ZPOOL_PROP_DEDUPDITTO: |
570 | if (spa_version(spa) < SPA_VERSION_DEDUP) | |
571 | error = ENOTSUP; | |
572 | else | |
573 | error = nvpair_value_uint64(elem, &intval); | |
574 | if (error == 0 && | |
575 | intval != 0 && intval < ZIO_DEDUPDITTO_MIN) | |
576 | error = EINVAL; | |
577 | break; | |
e75c13c3 BB |
578 | |
579 | default: | |
580 | break; | |
34dc7c2f BB |
581 | } |
582 | ||
583 | if (error) | |
584 | break; | |
585 | } | |
586 | ||
587 | if (!error && reset_bootfs) { | |
588 | error = nvlist_remove(props, | |
589 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
590 | ||
591 | if (!error) { | |
592 | error = nvlist_add_uint64(props, | |
593 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
594 | } | |
595 | } | |
596 | ||
597 | return (error); | |
598 | } | |
599 | ||
d164b209 BB |
600 | void |
601 | spa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync) | |
602 | { | |
603 | char *cachefile; | |
604 | spa_config_dirent_t *dp; | |
605 | ||
606 | if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), | |
607 | &cachefile) != 0) | |
608 | return; | |
609 | ||
610 | dp = kmem_alloc(sizeof (spa_config_dirent_t), | |
b8d06fca | 611 | KM_PUSHPAGE); |
d164b209 BB |
612 | |
613 | if (cachefile[0] == '\0') | |
614 | dp->scd_path = spa_strdup(spa_config_path); | |
615 | else if (strcmp(cachefile, "none") == 0) | |
616 | dp->scd_path = NULL; | |
617 | else | |
618 | dp->scd_path = spa_strdup(cachefile); | |
619 | ||
620 | list_insert_head(&spa->spa_config_list, dp); | |
621 | if (need_sync) | |
622 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
623 | } | |
624 | ||
34dc7c2f BB |
625 | int |
626 | spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
627 | { | |
628 | int error; | |
9ae529ec | 629 | nvpair_t *elem = NULL; |
d164b209 | 630 | boolean_t need_sync = B_FALSE; |
34dc7c2f BB |
631 | |
632 | if ((error = spa_prop_validate(spa, nvp)) != 0) | |
633 | return (error); | |
634 | ||
d164b209 | 635 | while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) { |
9ae529ec | 636 | zpool_prop_t prop = zpool_name_to_prop(nvpair_name(elem)); |
d164b209 | 637 | |
572e2857 BB |
638 | if (prop == ZPOOL_PROP_CACHEFILE || |
639 | prop == ZPOOL_PROP_ALTROOT || | |
640 | prop == ZPOOL_PROP_READONLY) | |
d164b209 BB |
641 | continue; |
642 | ||
9ae529ec CS |
643 | if (prop == ZPOOL_PROP_VERSION || prop == ZPROP_INVAL) { |
644 | uint64_t ver; | |
645 | ||
646 | if (prop == ZPOOL_PROP_VERSION) { | |
647 | VERIFY(nvpair_value_uint64(elem, &ver) == 0); | |
648 | } else { | |
649 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
650 | ver = SPA_VERSION_FEATURES; | |
651 | need_sync = B_TRUE; | |
652 | } | |
653 | ||
654 | /* Save time if the version is already set. */ | |
655 | if (ver == spa_version(spa)) | |
656 | continue; | |
657 | ||
658 | /* | |
659 | * In addition to the pool directory object, we might | |
660 | * create the pool properties object, the features for | |
661 | * read object, the features for write object, or the | |
662 | * feature descriptions object. | |
663 | */ | |
664 | error = dsl_sync_task_do(spa_get_dsl(spa), NULL, | |
665 | spa_sync_version, spa, &ver, 6); | |
666 | if (error) | |
667 | return (error); | |
668 | continue; | |
669 | } | |
670 | ||
d164b209 BB |
671 | need_sync = B_TRUE; |
672 | break; | |
673 | } | |
674 | ||
9ae529ec | 675 | if (need_sync) { |
d164b209 | 676 | return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props, |
9ae529ec CS |
677 | spa, nvp, 6)); |
678 | } | |
679 | ||
680 | return (0); | |
34dc7c2f BB |
681 | } |
682 | ||
683 | /* | |
684 | * If the bootfs property value is dsobj, clear it. | |
685 | */ | |
686 | void | |
687 | spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
688 | { | |
689 | if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
690 | VERIFY(zap_remove(spa->spa_meta_objset, | |
691 | spa->spa_pool_props_object, | |
692 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
693 | spa->spa_bootfs = 0; | |
694 | } | |
695 | } | |
696 | ||
3bc7e0fb GW |
697 | /*ARGSUSED*/ |
698 | static int | |
699 | spa_change_guid_check(void *arg1, void *arg2, dmu_tx_t *tx) | |
700 | { | |
701 | spa_t *spa = arg1; | |
702 | vdev_t *rvd = spa->spa_root_vdev; | |
703 | uint64_t vdev_state; | |
704 | ASSERTV(uint64_t *newguid = arg2); | |
705 | ||
706 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
707 | vdev_state = rvd->vdev_state; | |
708 | spa_config_exit(spa, SCL_STATE, FTAG); | |
709 | ||
710 | if (vdev_state != VDEV_STATE_HEALTHY) | |
711 | return (ENXIO); | |
712 | ||
713 | ASSERT3U(spa_guid(spa), !=, *newguid); | |
714 | ||
715 | return (0); | |
716 | } | |
717 | ||
718 | static void | |
719 | spa_change_guid_sync(void *arg1, void *arg2, dmu_tx_t *tx) | |
720 | { | |
721 | spa_t *spa = arg1; | |
722 | uint64_t *newguid = arg2; | |
723 | uint64_t oldguid; | |
724 | vdev_t *rvd = spa->spa_root_vdev; | |
725 | ||
726 | oldguid = spa_guid(spa); | |
727 | ||
728 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
729 | rvd->vdev_guid = *newguid; | |
730 | rvd->vdev_guid_sum += (*newguid - oldguid); | |
731 | vdev_config_dirty(rvd); | |
732 | spa_config_exit(spa, SCL_STATE, FTAG); | |
733 | ||
6f1ffb06 MA |
734 | spa_history_log_internal(spa, "guid change", tx, "old=%llu new=%llu", |
735 | oldguid, *newguid); | |
3bc7e0fb GW |
736 | } |
737 | ||
3541dc6d GA |
738 | /* |
739 | * Change the GUID for the pool. This is done so that we can later | |
740 | * re-import a pool built from a clone of our own vdevs. We will modify | |
741 | * the root vdev's guid, our own pool guid, and then mark all of our | |
742 | * vdevs dirty. Note that we must make sure that all our vdevs are | |
743 | * online when we do this, or else any vdevs that weren't present | |
744 | * would be orphaned from our pool. We are also going to issue a | |
745 | * sysevent to update any watchers. | |
746 | */ | |
747 | int | |
748 | spa_change_guid(spa_t *spa) | |
749 | { | |
3bc7e0fb GW |
750 | int error; |
751 | uint64_t guid; | |
3541dc6d | 752 | |
3bc7e0fb GW |
753 | mutex_enter(&spa_namespace_lock); |
754 | guid = spa_generate_guid(NULL); | |
3541dc6d | 755 | |
3bc7e0fb GW |
756 | error = dsl_sync_task_do(spa_get_dsl(spa), spa_change_guid_check, |
757 | spa_change_guid_sync, spa, &guid, 5); | |
3541dc6d | 758 | |
3bc7e0fb GW |
759 | if (error == 0) { |
760 | spa_config_sync(spa, B_FALSE, B_TRUE); | |
761 | spa_event_notify(spa, NULL, FM_EREPORT_ZFS_POOL_REGUID); | |
762 | } | |
3541dc6d | 763 | |
3bc7e0fb | 764 | mutex_exit(&spa_namespace_lock); |
3541dc6d | 765 | |
3bc7e0fb | 766 | return (error); |
3541dc6d GA |
767 | } |
768 | ||
34dc7c2f BB |
769 | /* |
770 | * ========================================================================== | |
771 | * SPA state manipulation (open/create/destroy/import/export) | |
772 | * ========================================================================== | |
773 | */ | |
774 | ||
775 | static int | |
776 | spa_error_entry_compare(const void *a, const void *b) | |
777 | { | |
778 | spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
779 | spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
780 | int ret; | |
781 | ||
782 | ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
783 | sizeof (zbookmark_t)); | |
784 | ||
785 | if (ret < 0) | |
786 | return (-1); | |
787 | else if (ret > 0) | |
788 | return (1); | |
789 | else | |
790 | return (0); | |
791 | } | |
792 | ||
793 | /* | |
794 | * Utility function which retrieves copies of the current logs and | |
795 | * re-initializes them in the process. | |
796 | */ | |
797 | void | |
798 | spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
799 | { | |
800 | ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
801 | ||
802 | bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
803 | bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
804 | ||
805 | avl_create(&spa->spa_errlist_scrub, | |
806 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
807 | offsetof(spa_error_entry_t, se_avl)); | |
808 | avl_create(&spa->spa_errlist_last, | |
809 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
810 | offsetof(spa_error_entry_t, se_avl)); | |
811 | } | |
812 | ||
7ef5e54e AL |
813 | static void |
814 | spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
34dc7c2f | 815 | { |
7ef5e54e AL |
816 | const zio_taskq_info_t *ztip = &zio_taskqs[t][q]; |
817 | enum zti_modes mode = ztip->zti_mode; | |
818 | uint_t value = ztip->zti_value; | |
819 | uint_t count = ztip->zti_count; | |
820 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
821 | char name[32]; | |
822 | uint_t i, flags = 0; | |
428870ff | 823 | boolean_t batch = B_FALSE; |
34dc7c2f | 824 | |
7ef5e54e AL |
825 | if (mode == ZTI_MODE_NULL) { |
826 | tqs->stqs_count = 0; | |
827 | tqs->stqs_taskq = NULL; | |
828 | return; | |
829 | } | |
428870ff | 830 | |
7ef5e54e | 831 | ASSERT3U(count, >, 0); |
428870ff | 832 | |
7ef5e54e AL |
833 | tqs->stqs_count = count; |
834 | tqs->stqs_taskq = kmem_alloc(count * sizeof (taskq_t *), KM_SLEEP); | |
428870ff | 835 | |
7ef5e54e AL |
836 | for (i = 0; i < count; i++) { |
837 | taskq_t *tq; | |
428870ff | 838 | |
7ef5e54e AL |
839 | switch (mode) { |
840 | case ZTI_MODE_FIXED: | |
841 | ASSERT3U(value, >=, 1); | |
842 | value = MAX(value, 1); | |
843 | break; | |
844 | ||
845 | case ZTI_MODE_BATCH: | |
846 | batch = B_TRUE; | |
847 | flags |= TASKQ_THREADS_CPU_PCT; | |
848 | value = zio_taskq_batch_pct; | |
849 | break; | |
850 | ||
851 | case ZTI_MODE_ONLINE_PERCENT: | |
852 | flags |= TASKQ_THREADS_CPU_PCT; | |
853 | break; | |
854 | ||
855 | default: | |
856 | panic("unrecognized mode for %s_%s taskq (%u:%u) in " | |
857 | "spa_activate()", | |
858 | zio_type_name[t], zio_taskq_types[q], mode, value); | |
859 | break; | |
860 | } | |
861 | ||
862 | if (count > 1) { | |
863 | (void) snprintf(name, sizeof (name), "%s_%s_%u", | |
864 | zio_type_name[t], zio_taskq_types[q], i); | |
865 | } else { | |
866 | (void) snprintf(name, sizeof (name), "%s_%s", | |
867 | zio_type_name[t], zio_taskq_types[q]); | |
868 | } | |
869 | ||
870 | if (zio_taskq_sysdc && spa->spa_proc != &p0) { | |
871 | if (batch) | |
872 | flags |= TASKQ_DC_BATCH; | |
873 | ||
874 | tq = taskq_create_sysdc(name, value, 50, INT_MAX, | |
875 | spa->spa_proc, zio_taskq_basedc, flags); | |
876 | } else { | |
877 | tq = taskq_create_proc(name, value, maxclsyspri, 50, | |
878 | INT_MAX, spa->spa_proc, flags); | |
879 | } | |
880 | ||
881 | tqs->stqs_taskq[i] = tq; | |
882 | } | |
883 | } | |
884 | ||
885 | static void | |
886 | spa_taskqs_fini(spa_t *spa, zio_type_t t, zio_taskq_type_t q) | |
887 | { | |
888 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
889 | uint_t i; | |
890 | ||
891 | if (tqs->stqs_taskq == NULL) { | |
892 | ASSERT3U(tqs->stqs_count, ==, 0); | |
893 | return; | |
894 | } | |
895 | ||
896 | for (i = 0; i < tqs->stqs_count; i++) { | |
897 | ASSERT3P(tqs->stqs_taskq[i], !=, NULL); | |
898 | taskq_destroy(tqs->stqs_taskq[i]); | |
428870ff | 899 | } |
34dc7c2f | 900 | |
7ef5e54e AL |
901 | kmem_free(tqs->stqs_taskq, tqs->stqs_count * sizeof (taskq_t *)); |
902 | tqs->stqs_taskq = NULL; | |
903 | } | |
34dc7c2f | 904 | |
7ef5e54e AL |
905 | /* |
906 | * Dispatch a task to the appropriate taskq for the ZFS I/O type and priority. | |
907 | * Note that a type may have multiple discrete taskqs to avoid lock contention | |
908 | * on the taskq itself. In that case we choose which taskq at random by using | |
909 | * the low bits of gethrtime(). | |
910 | */ | |
911 | void | |
912 | spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
913 | task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent) | |
914 | { | |
915 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
916 | taskq_t *tq; | |
917 | ||
918 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
919 | ASSERT3U(tqs->stqs_count, !=, 0); | |
920 | ||
921 | if (tqs->stqs_count == 1) { | |
922 | tq = tqs->stqs_taskq[0]; | |
923 | } else { | |
c12936b1 | 924 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
428870ff | 925 | } |
7ef5e54e AL |
926 | |
927 | taskq_dispatch_ent(tq, func, arg, flags, ent); | |
428870ff BB |
928 | } |
929 | ||
044baf00 BB |
930 | /* |
931 | * Same as spa_taskq_dispatch_ent() but block on the task until completion. | |
932 | */ | |
933 | void | |
934 | spa_taskq_dispatch_sync(spa_t *spa, zio_type_t t, zio_taskq_type_t q, | |
935 | task_func_t *func, void *arg, uint_t flags) | |
936 | { | |
937 | spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q]; | |
938 | taskq_t *tq; | |
939 | taskqid_t id; | |
940 | ||
941 | ASSERT3P(tqs->stqs_taskq, !=, NULL); | |
942 | ASSERT3U(tqs->stqs_count, !=, 0); | |
943 | ||
944 | if (tqs->stqs_count == 1) { | |
945 | tq = tqs->stqs_taskq[0]; | |
946 | } else { | |
c12936b1 | 947 | tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count]; |
044baf00 BB |
948 | } |
949 | ||
950 | id = taskq_dispatch(tq, func, arg, flags); | |
951 | if (id) | |
952 | taskq_wait_id(tq, id); | |
953 | } | |
954 | ||
428870ff BB |
955 | static void |
956 | spa_create_zio_taskqs(spa_t *spa) | |
957 | { | |
d6320ddb BB |
958 | int t, q; |
959 | ||
960 | for (t = 0; t < ZIO_TYPES; t++) { | |
961 | for (q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 962 | spa_taskqs_init(spa, t, q); |
428870ff BB |
963 | } |
964 | } | |
965 | } | |
9babb374 | 966 | |
7b89a549 | 967 | #if defined(_KERNEL) && defined(HAVE_SPA_THREAD) |
428870ff BB |
968 | static void |
969 | spa_thread(void *arg) | |
970 | { | |
971 | callb_cpr_t cprinfo; | |
9babb374 | 972 | |
428870ff BB |
973 | spa_t *spa = arg; |
974 | user_t *pu = PTOU(curproc); | |
9babb374 | 975 | |
428870ff BB |
976 | CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr, |
977 | spa->spa_name); | |
9babb374 | 978 | |
428870ff BB |
979 | ASSERT(curproc != &p0); |
980 | (void) snprintf(pu->u_psargs, sizeof (pu->u_psargs), | |
981 | "zpool-%s", spa->spa_name); | |
982 | (void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm)); | |
983 | ||
984 | /* bind this thread to the requested psrset */ | |
985 | if (zio_taskq_psrset_bind != PS_NONE) { | |
986 | pool_lock(); | |
987 | mutex_enter(&cpu_lock); | |
988 | mutex_enter(&pidlock); | |
989 | mutex_enter(&curproc->p_lock); | |
990 | ||
991 | if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind, | |
992 | 0, NULL, NULL) == 0) { | |
993 | curthread->t_bind_pset = zio_taskq_psrset_bind; | |
994 | } else { | |
995 | cmn_err(CE_WARN, | |
996 | "Couldn't bind process for zfs pool \"%s\" to " | |
997 | "pset %d\n", spa->spa_name, zio_taskq_psrset_bind); | |
998 | } | |
999 | ||
1000 | mutex_exit(&curproc->p_lock); | |
1001 | mutex_exit(&pidlock); | |
1002 | mutex_exit(&cpu_lock); | |
1003 | pool_unlock(); | |
1004 | } | |
1005 | ||
1006 | if (zio_taskq_sysdc) { | |
1007 | sysdc_thread_enter(curthread, 100, 0); | |
1008 | } | |
1009 | ||
1010 | spa->spa_proc = curproc; | |
1011 | spa->spa_did = curthread->t_did; | |
1012 | ||
1013 | spa_create_zio_taskqs(spa); | |
1014 | ||
1015 | mutex_enter(&spa->spa_proc_lock); | |
1016 | ASSERT(spa->spa_proc_state == SPA_PROC_CREATED); | |
1017 | ||
1018 | spa->spa_proc_state = SPA_PROC_ACTIVE; | |
1019 | cv_broadcast(&spa->spa_proc_cv); | |
1020 | ||
1021 | CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
1022 | while (spa->spa_proc_state == SPA_PROC_ACTIVE) | |
1023 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1024 | CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock); | |
1025 | ||
1026 | ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE); | |
1027 | spa->spa_proc_state = SPA_PROC_GONE; | |
1028 | spa->spa_proc = &p0; | |
1029 | cv_broadcast(&spa->spa_proc_cv); | |
1030 | CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */ | |
1031 | ||
1032 | mutex_enter(&curproc->p_lock); | |
1033 | lwp_exit(); | |
1034 | } | |
1035 | #endif | |
1036 | ||
1037 | /* | |
1038 | * Activate an uninitialized pool. | |
1039 | */ | |
1040 | static void | |
1041 | spa_activate(spa_t *spa, int mode) | |
1042 | { | |
1043 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
1044 | ||
1045 | spa->spa_state = POOL_STATE_ACTIVE; | |
1046 | spa->spa_mode = mode; | |
1047 | ||
1048 | spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
1049 | spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
1050 | ||
1051 | /* Try to create a covering process */ | |
1052 | mutex_enter(&spa->spa_proc_lock); | |
1053 | ASSERT(spa->spa_proc_state == SPA_PROC_NONE); | |
1054 | ASSERT(spa->spa_proc == &p0); | |
1055 | spa->spa_did = 0; | |
1056 | ||
7b89a549 | 1057 | #ifdef HAVE_SPA_THREAD |
428870ff BB |
1058 | /* Only create a process if we're going to be around a while. */ |
1059 | if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) { | |
1060 | if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri, | |
1061 | NULL, 0) == 0) { | |
1062 | spa->spa_proc_state = SPA_PROC_CREATED; | |
1063 | while (spa->spa_proc_state == SPA_PROC_CREATED) { | |
1064 | cv_wait(&spa->spa_proc_cv, | |
1065 | &spa->spa_proc_lock); | |
9babb374 | 1066 | } |
428870ff BB |
1067 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); |
1068 | ASSERT(spa->spa_proc != &p0); | |
1069 | ASSERT(spa->spa_did != 0); | |
1070 | } else { | |
1071 | #ifdef _KERNEL | |
1072 | cmn_err(CE_WARN, | |
1073 | "Couldn't create process for zfs pool \"%s\"\n", | |
1074 | spa->spa_name); | |
1075 | #endif | |
b128c09f | 1076 | } |
34dc7c2f | 1077 | } |
7b89a549 | 1078 | #endif /* HAVE_SPA_THREAD */ |
428870ff BB |
1079 | mutex_exit(&spa->spa_proc_lock); |
1080 | ||
1081 | /* If we didn't create a process, we need to create our taskqs. */ | |
1082 | if (spa->spa_proc == &p0) { | |
1083 | spa_create_zio_taskqs(spa); | |
1084 | } | |
34dc7c2f | 1085 | |
b128c09f BB |
1086 | list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), |
1087 | offsetof(vdev_t, vdev_config_dirty_node)); | |
1088 | list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), | |
1089 | offsetof(vdev_t, vdev_state_dirty_node)); | |
34dc7c2f BB |
1090 | |
1091 | txg_list_create(&spa->spa_vdev_txg_list, | |
1092 | offsetof(struct vdev, vdev_txg_node)); | |
1093 | ||
1094 | avl_create(&spa->spa_errlist_scrub, | |
1095 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1096 | offsetof(spa_error_entry_t, se_avl)); | |
1097 | avl_create(&spa->spa_errlist_last, | |
1098 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
1099 | offsetof(spa_error_entry_t, se_avl)); | |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | * Opposite of spa_activate(). | |
1104 | */ | |
1105 | static void | |
1106 | spa_deactivate(spa_t *spa) | |
1107 | { | |
d6320ddb BB |
1108 | int t, q; |
1109 | ||
34dc7c2f BB |
1110 | ASSERT(spa->spa_sync_on == B_FALSE); |
1111 | ASSERT(spa->spa_dsl_pool == NULL); | |
1112 | ASSERT(spa->spa_root_vdev == NULL); | |
9babb374 | 1113 | ASSERT(spa->spa_async_zio_root == NULL); |
34dc7c2f BB |
1114 | ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); |
1115 | ||
1116 | txg_list_destroy(&spa->spa_vdev_txg_list); | |
1117 | ||
b128c09f BB |
1118 | list_destroy(&spa->spa_config_dirty_list); |
1119 | list_destroy(&spa->spa_state_dirty_list); | |
34dc7c2f | 1120 | |
cc92e9d0 GW |
1121 | taskq_cancel_id(system_taskq, spa->spa_deadman_tqid); |
1122 | ||
d6320ddb BB |
1123 | for (t = 0; t < ZIO_TYPES; t++) { |
1124 | for (q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
7ef5e54e | 1125 | spa_taskqs_fini(spa, t, q); |
b128c09f | 1126 | } |
34dc7c2f BB |
1127 | } |
1128 | ||
1129 | metaslab_class_destroy(spa->spa_normal_class); | |
1130 | spa->spa_normal_class = NULL; | |
1131 | ||
1132 | metaslab_class_destroy(spa->spa_log_class); | |
1133 | spa->spa_log_class = NULL; | |
1134 | ||
1135 | /* | |
1136 | * If this was part of an import or the open otherwise failed, we may | |
1137 | * still have errors left in the queues. Empty them just in case. | |
1138 | */ | |
1139 | spa_errlog_drain(spa); | |
1140 | ||
1141 | avl_destroy(&spa->spa_errlist_scrub); | |
1142 | avl_destroy(&spa->spa_errlist_last); | |
1143 | ||
1144 | spa->spa_state = POOL_STATE_UNINITIALIZED; | |
428870ff BB |
1145 | |
1146 | mutex_enter(&spa->spa_proc_lock); | |
1147 | if (spa->spa_proc_state != SPA_PROC_NONE) { | |
1148 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); | |
1149 | spa->spa_proc_state = SPA_PROC_DEACTIVATE; | |
1150 | cv_broadcast(&spa->spa_proc_cv); | |
1151 | while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) { | |
1152 | ASSERT(spa->spa_proc != &p0); | |
1153 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
1154 | } | |
1155 | ASSERT(spa->spa_proc_state == SPA_PROC_GONE); | |
1156 | spa->spa_proc_state = SPA_PROC_NONE; | |
1157 | } | |
1158 | ASSERT(spa->spa_proc == &p0); | |
1159 | mutex_exit(&spa->spa_proc_lock); | |
1160 | ||
1161 | /* | |
1162 | * We want to make sure spa_thread() has actually exited the ZFS | |
1163 | * module, so that the module can't be unloaded out from underneath | |
1164 | * it. | |
1165 | */ | |
1166 | if (spa->spa_did != 0) { | |
1167 | thread_join(spa->spa_did); | |
1168 | spa->spa_did = 0; | |
1169 | } | |
34dc7c2f BB |
1170 | } |
1171 | ||
1172 | /* | |
1173 | * Verify a pool configuration, and construct the vdev tree appropriately. This | |
1174 | * will create all the necessary vdevs in the appropriate layout, with each vdev | |
1175 | * in the CLOSED state. This will prep the pool before open/creation/import. | |
1176 | * All vdev validation is done by the vdev_alloc() routine. | |
1177 | */ | |
1178 | static int | |
1179 | spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
1180 | uint_t id, int atype) | |
1181 | { | |
1182 | nvlist_t **child; | |
9babb374 | 1183 | uint_t children; |
34dc7c2f | 1184 | int error; |
d6320ddb | 1185 | int c; |
34dc7c2f BB |
1186 | |
1187 | if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
1188 | return (error); | |
1189 | ||
1190 | if ((*vdp)->vdev_ops->vdev_op_leaf) | |
1191 | return (0); | |
1192 | ||
b128c09f BB |
1193 | error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
1194 | &child, &children); | |
1195 | ||
1196 | if (error == ENOENT) | |
1197 | return (0); | |
1198 | ||
1199 | if (error) { | |
34dc7c2f BB |
1200 | vdev_free(*vdp); |
1201 | *vdp = NULL; | |
1202 | return (EINVAL); | |
1203 | } | |
1204 | ||
d6320ddb | 1205 | for (c = 0; c < children; c++) { |
34dc7c2f BB |
1206 | vdev_t *vd; |
1207 | if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
1208 | atype)) != 0) { | |
1209 | vdev_free(*vdp); | |
1210 | *vdp = NULL; | |
1211 | return (error); | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | ASSERT(*vdp != NULL); | |
1216 | ||
1217 | return (0); | |
1218 | } | |
1219 | ||
1220 | /* | |
1221 | * Opposite of spa_load(). | |
1222 | */ | |
1223 | static void | |
1224 | spa_unload(spa_t *spa) | |
1225 | { | |
1226 | int i; | |
1227 | ||
b128c09f BB |
1228 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
1229 | ||
34dc7c2f BB |
1230 | /* |
1231 | * Stop async tasks. | |
1232 | */ | |
1233 | spa_async_suspend(spa); | |
1234 | ||
1235 | /* | |
1236 | * Stop syncing. | |
1237 | */ | |
1238 | if (spa->spa_sync_on) { | |
1239 | txg_sync_stop(spa->spa_dsl_pool); | |
1240 | spa->spa_sync_on = B_FALSE; | |
1241 | } | |
1242 | ||
1243 | /* | |
b128c09f | 1244 | * Wait for any outstanding async I/O to complete. |
34dc7c2f | 1245 | */ |
9babb374 BB |
1246 | if (spa->spa_async_zio_root != NULL) { |
1247 | (void) zio_wait(spa->spa_async_zio_root); | |
1248 | spa->spa_async_zio_root = NULL; | |
1249 | } | |
34dc7c2f | 1250 | |
428870ff BB |
1251 | bpobj_close(&spa->spa_deferred_bpobj); |
1252 | ||
34dc7c2f BB |
1253 | /* |
1254 | * Close the dsl pool. | |
1255 | */ | |
1256 | if (spa->spa_dsl_pool) { | |
1257 | dsl_pool_close(spa->spa_dsl_pool); | |
1258 | spa->spa_dsl_pool = NULL; | |
428870ff | 1259 | spa->spa_meta_objset = NULL; |
34dc7c2f BB |
1260 | } |
1261 | ||
428870ff BB |
1262 | ddt_unload(spa); |
1263 | ||
fb5f0bc8 BB |
1264 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
1265 | ||
1266 | /* | |
1267 | * Drop and purge level 2 cache | |
1268 | */ | |
1269 | spa_l2cache_drop(spa); | |
1270 | ||
34dc7c2f BB |
1271 | /* |
1272 | * Close all vdevs. | |
1273 | */ | |
1274 | if (spa->spa_root_vdev) | |
1275 | vdev_free(spa->spa_root_vdev); | |
1276 | ASSERT(spa->spa_root_vdev == NULL); | |
1277 | ||
1278 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1279 | vdev_free(spa->spa_spares.sav_vdevs[i]); | |
1280 | if (spa->spa_spares.sav_vdevs) { | |
1281 | kmem_free(spa->spa_spares.sav_vdevs, | |
1282 | spa->spa_spares.sav_count * sizeof (void *)); | |
1283 | spa->spa_spares.sav_vdevs = NULL; | |
1284 | } | |
1285 | if (spa->spa_spares.sav_config) { | |
1286 | nvlist_free(spa->spa_spares.sav_config); | |
1287 | spa->spa_spares.sav_config = NULL; | |
1288 | } | |
b128c09f | 1289 | spa->spa_spares.sav_count = 0; |
34dc7c2f | 1290 | |
5ffb9d1d GW |
1291 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
1292 | vdev_clear_stats(spa->spa_l2cache.sav_vdevs[i]); | |
34dc7c2f | 1293 | vdev_free(spa->spa_l2cache.sav_vdevs[i]); |
5ffb9d1d | 1294 | } |
34dc7c2f BB |
1295 | if (spa->spa_l2cache.sav_vdevs) { |
1296 | kmem_free(spa->spa_l2cache.sav_vdevs, | |
1297 | spa->spa_l2cache.sav_count * sizeof (void *)); | |
1298 | spa->spa_l2cache.sav_vdevs = NULL; | |
1299 | } | |
1300 | if (spa->spa_l2cache.sav_config) { | |
1301 | nvlist_free(spa->spa_l2cache.sav_config); | |
1302 | spa->spa_l2cache.sav_config = NULL; | |
1303 | } | |
b128c09f | 1304 | spa->spa_l2cache.sav_count = 0; |
34dc7c2f BB |
1305 | |
1306 | spa->spa_async_suspended = 0; | |
fb5f0bc8 | 1307 | |
d96eb2b1 DM |
1308 | if (spa->spa_comment != NULL) { |
1309 | spa_strfree(spa->spa_comment); | |
1310 | spa->spa_comment = NULL; | |
1311 | } | |
1312 | ||
fb5f0bc8 | 1313 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1314 | } |
1315 | ||
1316 | /* | |
1317 | * Load (or re-load) the current list of vdevs describing the active spares for | |
1318 | * this pool. When this is called, we have some form of basic information in | |
1319 | * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and | |
1320 | * then re-generate a more complete list including status information. | |
1321 | */ | |
1322 | static void | |
1323 | spa_load_spares(spa_t *spa) | |
1324 | { | |
1325 | nvlist_t **spares; | |
1326 | uint_t nspares; | |
1327 | int i; | |
1328 | vdev_t *vd, *tvd; | |
1329 | ||
b128c09f BB |
1330 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1331 | ||
34dc7c2f BB |
1332 | /* |
1333 | * First, close and free any existing spare vdevs. | |
1334 | */ | |
1335 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
1336 | vd = spa->spa_spares.sav_vdevs[i]; | |
1337 | ||
1338 | /* Undo the call to spa_activate() below */ | |
b128c09f BB |
1339 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1340 | B_FALSE)) != NULL && tvd->vdev_isspare) | |
34dc7c2f BB |
1341 | spa_spare_remove(tvd); |
1342 | vdev_close(vd); | |
1343 | vdev_free(vd); | |
1344 | } | |
1345 | ||
1346 | if (spa->spa_spares.sav_vdevs) | |
1347 | kmem_free(spa->spa_spares.sav_vdevs, | |
1348 | spa->spa_spares.sav_count * sizeof (void *)); | |
1349 | ||
1350 | if (spa->spa_spares.sav_config == NULL) | |
1351 | nspares = 0; | |
1352 | else | |
1353 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
1354 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1355 | ||
1356 | spa->spa_spares.sav_count = (int)nspares; | |
1357 | spa->spa_spares.sav_vdevs = NULL; | |
1358 | ||
1359 | if (nspares == 0) | |
1360 | return; | |
1361 | ||
1362 | /* | |
1363 | * Construct the array of vdevs, opening them to get status in the | |
1364 | * process. For each spare, there is potentially two different vdev_t | |
1365 | * structures associated with it: one in the list of spares (used only | |
1366 | * for basic validation purposes) and one in the active vdev | |
1367 | * configuration (if it's spared in). During this phase we open and | |
1368 | * validate each vdev on the spare list. If the vdev also exists in the | |
1369 | * active configuration, then we also mark this vdev as an active spare. | |
1370 | */ | |
1371 | spa->spa_spares.sav_vdevs = kmem_alloc(nspares * sizeof (void *), | |
b8d06fca | 1372 | KM_PUSHPAGE); |
34dc7c2f BB |
1373 | for (i = 0; i < spa->spa_spares.sav_count; i++) { |
1374 | VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
1375 | VDEV_ALLOC_SPARE) == 0); | |
1376 | ASSERT(vd != NULL); | |
1377 | ||
1378 | spa->spa_spares.sav_vdevs[i] = vd; | |
1379 | ||
b128c09f BB |
1380 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1381 | B_FALSE)) != NULL) { | |
34dc7c2f BB |
1382 | if (!tvd->vdev_isspare) |
1383 | spa_spare_add(tvd); | |
1384 | ||
1385 | /* | |
1386 | * We only mark the spare active if we were successfully | |
1387 | * able to load the vdev. Otherwise, importing a pool | |
1388 | * with a bad active spare would result in strange | |
1389 | * behavior, because multiple pool would think the spare | |
1390 | * is actively in use. | |
1391 | * | |
1392 | * There is a vulnerability here to an equally bizarre | |
1393 | * circumstance, where a dead active spare is later | |
1394 | * brought back to life (onlined or otherwise). Given | |
1395 | * the rarity of this scenario, and the extra complexity | |
1396 | * it adds, we ignore the possibility. | |
1397 | */ | |
1398 | if (!vdev_is_dead(tvd)) | |
1399 | spa_spare_activate(tvd); | |
1400 | } | |
1401 | ||
b128c09f | 1402 | vd->vdev_top = vd; |
9babb374 | 1403 | vd->vdev_aux = &spa->spa_spares; |
b128c09f | 1404 | |
34dc7c2f BB |
1405 | if (vdev_open(vd) != 0) |
1406 | continue; | |
1407 | ||
34dc7c2f BB |
1408 | if (vdev_validate_aux(vd) == 0) |
1409 | spa_spare_add(vd); | |
1410 | } | |
1411 | ||
1412 | /* | |
1413 | * Recompute the stashed list of spares, with status information | |
1414 | * this time. | |
1415 | */ | |
1416 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
1417 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1418 | ||
1419 | spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), | |
b8d06fca | 1420 | KM_PUSHPAGE); |
34dc7c2f BB |
1421 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
1422 | spares[i] = vdev_config_generate(spa, | |
428870ff | 1423 | spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE); |
34dc7c2f BB |
1424 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
1425 | ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
1426 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1427 | nvlist_free(spares[i]); | |
1428 | kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); | |
1429 | } | |
1430 | ||
1431 | /* | |
1432 | * Load (or re-load) the current list of vdevs describing the active l2cache for | |
1433 | * this pool. When this is called, we have some form of basic information in | |
1434 | * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
1435 | * then re-generate a more complete list including status information. | |
1436 | * Devices which are already active have their details maintained, and are | |
1437 | * not re-opened. | |
1438 | */ | |
1439 | static void | |
1440 | spa_load_l2cache(spa_t *spa) | |
1441 | { | |
1442 | nvlist_t **l2cache; | |
1443 | uint_t nl2cache; | |
1444 | int i, j, oldnvdevs; | |
9babb374 | 1445 | uint64_t guid; |
d4ed6673 | 1446 | vdev_t *vd, **oldvdevs, **newvdevs = NULL; |
34dc7c2f BB |
1447 | spa_aux_vdev_t *sav = &spa->spa_l2cache; |
1448 | ||
b128c09f BB |
1449 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1450 | ||
34dc7c2f BB |
1451 | if (sav->sav_config != NULL) { |
1452 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
1453 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
b8d06fca | 1454 | newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_PUSHPAGE); |
34dc7c2f BB |
1455 | } else { |
1456 | nl2cache = 0; | |
1457 | } | |
1458 | ||
1459 | oldvdevs = sav->sav_vdevs; | |
1460 | oldnvdevs = sav->sav_count; | |
1461 | sav->sav_vdevs = NULL; | |
1462 | sav->sav_count = 0; | |
1463 | ||
1464 | /* | |
1465 | * Process new nvlist of vdevs. | |
1466 | */ | |
1467 | for (i = 0; i < nl2cache; i++) { | |
1468 | VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
1469 | &guid) == 0); | |
1470 | ||
1471 | newvdevs[i] = NULL; | |
1472 | for (j = 0; j < oldnvdevs; j++) { | |
1473 | vd = oldvdevs[j]; | |
1474 | if (vd != NULL && guid == vd->vdev_guid) { | |
1475 | /* | |
1476 | * Retain previous vdev for add/remove ops. | |
1477 | */ | |
1478 | newvdevs[i] = vd; | |
1479 | oldvdevs[j] = NULL; | |
1480 | break; | |
1481 | } | |
1482 | } | |
1483 | ||
1484 | if (newvdevs[i] == NULL) { | |
1485 | /* | |
1486 | * Create new vdev | |
1487 | */ | |
1488 | VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
1489 | VDEV_ALLOC_L2CACHE) == 0); | |
1490 | ASSERT(vd != NULL); | |
1491 | newvdevs[i] = vd; | |
1492 | ||
1493 | /* | |
1494 | * Commit this vdev as an l2cache device, | |
1495 | * even if it fails to open. | |
1496 | */ | |
1497 | spa_l2cache_add(vd); | |
1498 | ||
b128c09f BB |
1499 | vd->vdev_top = vd; |
1500 | vd->vdev_aux = sav; | |
1501 | ||
1502 | spa_l2cache_activate(vd); | |
1503 | ||
34dc7c2f BB |
1504 | if (vdev_open(vd) != 0) |
1505 | continue; | |
1506 | ||
34dc7c2f BB |
1507 | (void) vdev_validate_aux(vd); |
1508 | ||
9babb374 BB |
1509 | if (!vdev_is_dead(vd)) |
1510 | l2arc_add_vdev(spa, vd); | |
34dc7c2f BB |
1511 | } |
1512 | } | |
1513 | ||
1514 | /* | |
1515 | * Purge vdevs that were dropped | |
1516 | */ | |
1517 | for (i = 0; i < oldnvdevs; i++) { | |
1518 | uint64_t pool; | |
1519 | ||
1520 | vd = oldvdevs[i]; | |
1521 | if (vd != NULL) { | |
5ffb9d1d GW |
1522 | ASSERT(vd->vdev_isl2cache); |
1523 | ||
fb5f0bc8 BB |
1524 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
1525 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 1526 | l2arc_remove_vdev(vd); |
5ffb9d1d GW |
1527 | vdev_clear_stats(vd); |
1528 | vdev_free(vd); | |
34dc7c2f BB |
1529 | } |
1530 | } | |
1531 | ||
1532 | if (oldvdevs) | |
1533 | kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
1534 | ||
1535 | if (sav->sav_config == NULL) | |
1536 | goto out; | |
1537 | ||
1538 | sav->sav_vdevs = newvdevs; | |
1539 | sav->sav_count = (int)nl2cache; | |
1540 | ||
1541 | /* | |
1542 | * Recompute the stashed list of l2cache devices, with status | |
1543 | * information this time. | |
1544 | */ | |
1545 | VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
1546 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1547 | ||
b8d06fca | 1548 | l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_PUSHPAGE); |
34dc7c2f BB |
1549 | for (i = 0; i < sav->sav_count; i++) |
1550 | l2cache[i] = vdev_config_generate(spa, | |
428870ff | 1551 | sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
1552 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, |
1553 | ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
1554 | out: | |
1555 | for (i = 0; i < sav->sav_count; i++) | |
1556 | nvlist_free(l2cache[i]); | |
1557 | if (sav->sav_count) | |
1558 | kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
1559 | } | |
1560 | ||
1561 | static int | |
1562 | load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
1563 | { | |
1564 | dmu_buf_t *db; | |
1565 | char *packed = NULL; | |
1566 | size_t nvsize = 0; | |
1567 | int error; | |
1568 | *value = NULL; | |
1569 | ||
c3275b56 BB |
1570 | error = dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db); |
1571 | if (error) | |
1572 | return (error); | |
1573 | ||
34dc7c2f BB |
1574 | nvsize = *(uint64_t *)db->db_data; |
1575 | dmu_buf_rele(db, FTAG); | |
1576 | ||
b8d06fca | 1577 | packed = kmem_alloc(nvsize, KM_PUSHPAGE | KM_NODEBUG); |
9babb374 BB |
1578 | error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed, |
1579 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
1580 | if (error == 0) |
1581 | error = nvlist_unpack(packed, nvsize, value, 0); | |
1582 | kmem_free(packed, nvsize); | |
1583 | ||
1584 | return (error); | |
1585 | } | |
1586 | ||
1587 | /* | |
1588 | * Checks to see if the given vdev could not be opened, in which case we post a | |
1589 | * sysevent to notify the autoreplace code that the device has been removed. | |
1590 | */ | |
1591 | static void | |
1592 | spa_check_removed(vdev_t *vd) | |
1593 | { | |
d6320ddb BB |
1594 | int c; |
1595 | ||
1596 | for (c = 0; c < vd->vdev_children; c++) | |
34dc7c2f BB |
1597 | spa_check_removed(vd->vdev_child[c]); |
1598 | ||
1599 | if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd)) { | |
26685276 BB |
1600 | zfs_ereport_post(FM_EREPORT_RESOURCE_AUTOREPLACE, |
1601 | vd->vdev_spa, vd, NULL, 0, 0); | |
1602 | spa_event_notify(vd->vdev_spa, vd, FM_EREPORT_ZFS_DEVICE_CHECK); | |
34dc7c2f BB |
1603 | } |
1604 | } | |
1605 | ||
9babb374 | 1606 | /* |
572e2857 | 1607 | * Validate the current config against the MOS config |
9babb374 | 1608 | */ |
572e2857 BB |
1609 | static boolean_t |
1610 | spa_config_valid(spa_t *spa, nvlist_t *config) | |
9babb374 | 1611 | { |
572e2857 BB |
1612 | vdev_t *mrvd, *rvd = spa->spa_root_vdev; |
1613 | nvlist_t *nv; | |
d6320ddb | 1614 | int c, i; |
572e2857 BB |
1615 | |
1616 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nv) == 0); | |
1617 | ||
1618 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1619 | VERIFY(spa_config_parse(spa, &mrvd, nv, NULL, 0, VDEV_ALLOC_LOAD) == 0); | |
1620 | ||
1621 | ASSERT3U(rvd->vdev_children, ==, mrvd->vdev_children); | |
9babb374 | 1622 | |
428870ff | 1623 | /* |
572e2857 BB |
1624 | * If we're doing a normal import, then build up any additional |
1625 | * diagnostic information about missing devices in this config. | |
1626 | * We'll pass this up to the user for further processing. | |
428870ff | 1627 | */ |
572e2857 BB |
1628 | if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) { |
1629 | nvlist_t **child, *nv; | |
1630 | uint64_t idx = 0; | |
1631 | ||
1632 | child = kmem_alloc(rvd->vdev_children * sizeof (nvlist_t **), | |
b8d06fca RY |
1633 | KM_PUSHPAGE); |
1634 | VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); | |
572e2857 | 1635 | |
d6320ddb | 1636 | for (c = 0; c < rvd->vdev_children; c++) { |
572e2857 BB |
1637 | vdev_t *tvd = rvd->vdev_child[c]; |
1638 | vdev_t *mtvd = mrvd->vdev_child[c]; | |
1639 | ||
1640 | if (tvd->vdev_ops == &vdev_missing_ops && | |
1641 | mtvd->vdev_ops != &vdev_missing_ops && | |
1642 | mtvd->vdev_islog) | |
1643 | child[idx++] = vdev_config_generate(spa, mtvd, | |
1644 | B_FALSE, 0); | |
1645 | } | |
9babb374 | 1646 | |
572e2857 BB |
1647 | if (idx) { |
1648 | VERIFY(nvlist_add_nvlist_array(nv, | |
1649 | ZPOOL_CONFIG_CHILDREN, child, idx) == 0); | |
1650 | VERIFY(nvlist_add_nvlist(spa->spa_load_info, | |
1651 | ZPOOL_CONFIG_MISSING_DEVICES, nv) == 0); | |
1652 | ||
d6320ddb | 1653 | for (i = 0; i < idx; i++) |
572e2857 BB |
1654 | nvlist_free(child[i]); |
1655 | } | |
1656 | nvlist_free(nv); | |
1657 | kmem_free(child, rvd->vdev_children * sizeof (char **)); | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * Compare the root vdev tree with the information we have | |
1662 | * from the MOS config (mrvd). Check each top-level vdev | |
1663 | * with the corresponding MOS config top-level (mtvd). | |
1664 | */ | |
d6320ddb | 1665 | for (c = 0; c < rvd->vdev_children; c++) { |
572e2857 BB |
1666 | vdev_t *tvd = rvd->vdev_child[c]; |
1667 | vdev_t *mtvd = mrvd->vdev_child[c]; | |
1668 | ||
1669 | /* | |
1670 | * Resolve any "missing" vdevs in the current configuration. | |
1671 | * If we find that the MOS config has more accurate information | |
1672 | * about the top-level vdev then use that vdev instead. | |
1673 | */ | |
1674 | if (tvd->vdev_ops == &vdev_missing_ops && | |
1675 | mtvd->vdev_ops != &vdev_missing_ops) { | |
1676 | ||
1677 | if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) | |
1678 | continue; | |
1679 | ||
1680 | /* | |
1681 | * Device specific actions. | |
1682 | */ | |
1683 | if (mtvd->vdev_islog) { | |
1684 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
1685 | } else { | |
1686 | /* | |
1687 | * XXX - once we have 'readonly' pool | |
1688 | * support we should be able to handle | |
1689 | * missing data devices by transitioning | |
1690 | * the pool to readonly. | |
1691 | */ | |
1692 | continue; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * Swap the missing vdev with the data we were | |
1697 | * able to obtain from the MOS config. | |
1698 | */ | |
1699 | vdev_remove_child(rvd, tvd); | |
1700 | vdev_remove_child(mrvd, mtvd); | |
1701 | ||
1702 | vdev_add_child(rvd, mtvd); | |
1703 | vdev_add_child(mrvd, tvd); | |
1704 | ||
1705 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1706 | vdev_load(mtvd); | |
1707 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1708 | ||
1709 | vdev_reopen(rvd); | |
1710 | } else if (mtvd->vdev_islog) { | |
1711 | /* | |
1712 | * Load the slog device's state from the MOS config | |
1713 | * since it's possible that the label does not | |
1714 | * contain the most up-to-date information. | |
1715 | */ | |
1716 | vdev_load_log_state(tvd, mtvd); | |
1717 | vdev_reopen(tvd); | |
1718 | } | |
9babb374 | 1719 | } |
572e2857 | 1720 | vdev_free(mrvd); |
428870ff | 1721 | spa_config_exit(spa, SCL_ALL, FTAG); |
572e2857 BB |
1722 | |
1723 | /* | |
1724 | * Ensure we were able to validate the config. | |
1725 | */ | |
1726 | return (rvd->vdev_guid_sum == spa->spa_uberblock.ub_guid_sum); | |
9babb374 BB |
1727 | } |
1728 | ||
b128c09f BB |
1729 | /* |
1730 | * Check for missing log devices | |
1731 | */ | |
572e2857 | 1732 | static int |
b128c09f BB |
1733 | spa_check_logs(spa_t *spa) |
1734 | { | |
1735 | switch (spa->spa_log_state) { | |
e75c13c3 BB |
1736 | default: |
1737 | break; | |
b128c09f BB |
1738 | case SPA_LOG_MISSING: |
1739 | /* need to recheck in case slog has been restored */ | |
1740 | case SPA_LOG_UNKNOWN: | |
1741 | if (dmu_objset_find(spa->spa_name, zil_check_log_chain, NULL, | |
1742 | DS_FIND_CHILDREN)) { | |
428870ff | 1743 | spa_set_log_state(spa, SPA_LOG_MISSING); |
b128c09f BB |
1744 | return (1); |
1745 | } | |
1746 | break; | |
b128c09f | 1747 | } |
b128c09f BB |
1748 | return (0); |
1749 | } | |
1750 | ||
428870ff BB |
1751 | static boolean_t |
1752 | spa_passivate_log(spa_t *spa) | |
34dc7c2f | 1753 | { |
428870ff BB |
1754 | vdev_t *rvd = spa->spa_root_vdev; |
1755 | boolean_t slog_found = B_FALSE; | |
d6320ddb | 1756 | int c; |
b128c09f | 1757 | |
428870ff | 1758 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
fb5f0bc8 | 1759 | |
428870ff BB |
1760 | if (!spa_has_slogs(spa)) |
1761 | return (B_FALSE); | |
34dc7c2f | 1762 | |
d6320ddb | 1763 | for (c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
1764 | vdev_t *tvd = rvd->vdev_child[c]; |
1765 | metaslab_group_t *mg = tvd->vdev_mg; | |
34dc7c2f | 1766 | |
428870ff BB |
1767 | if (tvd->vdev_islog) { |
1768 | metaslab_group_passivate(mg); | |
1769 | slog_found = B_TRUE; | |
1770 | } | |
34dc7c2f BB |
1771 | } |
1772 | ||
428870ff BB |
1773 | return (slog_found); |
1774 | } | |
34dc7c2f | 1775 | |
428870ff BB |
1776 | static void |
1777 | spa_activate_log(spa_t *spa) | |
1778 | { | |
1779 | vdev_t *rvd = spa->spa_root_vdev; | |
d6320ddb | 1780 | int c; |
34dc7c2f | 1781 | |
428870ff BB |
1782 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
1783 | ||
d6320ddb | 1784 | for (c = 0; c < rvd->vdev_children; c++) { |
428870ff BB |
1785 | vdev_t *tvd = rvd->vdev_child[c]; |
1786 | metaslab_group_t *mg = tvd->vdev_mg; | |
1787 | ||
1788 | if (tvd->vdev_islog) | |
1789 | metaslab_group_activate(mg); | |
34dc7c2f | 1790 | } |
428870ff | 1791 | } |
34dc7c2f | 1792 | |
428870ff BB |
1793 | int |
1794 | spa_offline_log(spa_t *spa) | |
1795 | { | |
1796 | int error = 0; | |
34dc7c2f | 1797 | |
428870ff BB |
1798 | if ((error = dmu_objset_find(spa_name(spa), zil_vdev_offline, |
1799 | NULL, DS_FIND_CHILDREN)) == 0) { | |
9babb374 | 1800 | |
428870ff BB |
1801 | /* |
1802 | * We successfully offlined the log device, sync out the | |
1803 | * current txg so that the "stubby" block can be removed | |
1804 | * by zil_sync(). | |
1805 | */ | |
1806 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
1807 | } | |
1808 | return (error); | |
1809 | } | |
34dc7c2f | 1810 | |
428870ff BB |
1811 | static void |
1812 | spa_aux_check_removed(spa_aux_vdev_t *sav) | |
1813 | { | |
d6320ddb BB |
1814 | int i; |
1815 | ||
1816 | for (i = 0; i < sav->sav_count; i++) | |
428870ff BB |
1817 | spa_check_removed(sav->sav_vdevs[i]); |
1818 | } | |
34dc7c2f | 1819 | |
428870ff BB |
1820 | void |
1821 | spa_claim_notify(zio_t *zio) | |
1822 | { | |
1823 | spa_t *spa = zio->io_spa; | |
34dc7c2f | 1824 | |
428870ff BB |
1825 | if (zio->io_error) |
1826 | return; | |
34dc7c2f | 1827 | |
428870ff BB |
1828 | mutex_enter(&spa->spa_props_lock); /* any mutex will do */ |
1829 | if (spa->spa_claim_max_txg < zio->io_bp->blk_birth) | |
1830 | spa->spa_claim_max_txg = zio->io_bp->blk_birth; | |
1831 | mutex_exit(&spa->spa_props_lock); | |
1832 | } | |
34dc7c2f | 1833 | |
428870ff BB |
1834 | typedef struct spa_load_error { |
1835 | uint64_t sle_meta_count; | |
1836 | uint64_t sle_data_count; | |
1837 | } spa_load_error_t; | |
34dc7c2f | 1838 | |
428870ff BB |
1839 | static void |
1840 | spa_load_verify_done(zio_t *zio) | |
1841 | { | |
1842 | blkptr_t *bp = zio->io_bp; | |
1843 | spa_load_error_t *sle = zio->io_private; | |
1844 | dmu_object_type_t type = BP_GET_TYPE(bp); | |
1845 | int error = zio->io_error; | |
34dc7c2f | 1846 | |
428870ff | 1847 | if (error) { |
9ae529ec | 1848 | if ((BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)) && |
428870ff BB |
1849 | type != DMU_OT_INTENT_LOG) |
1850 | atomic_add_64(&sle->sle_meta_count, 1); | |
1851 | else | |
1852 | atomic_add_64(&sle->sle_data_count, 1); | |
34dc7c2f | 1853 | } |
428870ff BB |
1854 | zio_data_buf_free(zio->io_data, zio->io_size); |
1855 | } | |
34dc7c2f | 1856 | |
428870ff BB |
1857 | /*ARGSUSED*/ |
1858 | static int | |
1859 | spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, | |
294f6806 | 1860 | const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg) |
428870ff BB |
1861 | { |
1862 | if (bp != NULL) { | |
1863 | zio_t *rio = arg; | |
1864 | size_t size = BP_GET_PSIZE(bp); | |
1865 | void *data = zio_data_buf_alloc(size); | |
34dc7c2f | 1866 | |
428870ff BB |
1867 | zio_nowait(zio_read(rio, spa, bp, data, size, |
1868 | spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB, | |
1869 | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL | | |
1870 | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb)); | |
34dc7c2f | 1871 | } |
428870ff BB |
1872 | return (0); |
1873 | } | |
34dc7c2f | 1874 | |
428870ff BB |
1875 | static int |
1876 | spa_load_verify(spa_t *spa) | |
1877 | { | |
1878 | zio_t *rio; | |
1879 | spa_load_error_t sle = { 0 }; | |
1880 | zpool_rewind_policy_t policy; | |
1881 | boolean_t verify_ok = B_FALSE; | |
1882 | int error; | |
34dc7c2f | 1883 | |
428870ff | 1884 | zpool_get_rewind_policy(spa->spa_config, &policy); |
34dc7c2f | 1885 | |
428870ff BB |
1886 | if (policy.zrp_request & ZPOOL_NEVER_REWIND) |
1887 | return (0); | |
34dc7c2f | 1888 | |
428870ff BB |
1889 | rio = zio_root(spa, NULL, &sle, |
1890 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
34dc7c2f | 1891 | |
428870ff BB |
1892 | error = traverse_pool(spa, spa->spa_verify_min_txg, |
1893 | TRAVERSE_PRE | TRAVERSE_PREFETCH, spa_load_verify_cb, rio); | |
1894 | ||
1895 | (void) zio_wait(rio); | |
1896 | ||
1897 | spa->spa_load_meta_errors = sle.sle_meta_count; | |
1898 | spa->spa_load_data_errors = sle.sle_data_count; | |
1899 | ||
1900 | if (!error && sle.sle_meta_count <= policy.zrp_maxmeta && | |
1901 | sle.sle_data_count <= policy.zrp_maxdata) { | |
572e2857 BB |
1902 | int64_t loss = 0; |
1903 | ||
428870ff BB |
1904 | verify_ok = B_TRUE; |
1905 | spa->spa_load_txg = spa->spa_uberblock.ub_txg; | |
1906 | spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp; | |
572e2857 BB |
1907 | |
1908 | loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts; | |
1909 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
1910 | ZPOOL_CONFIG_LOAD_TIME, spa->spa_load_txg_ts) == 0); | |
1911 | VERIFY(nvlist_add_int64(spa->spa_load_info, | |
1912 | ZPOOL_CONFIG_REWIND_TIME, loss) == 0); | |
1913 | VERIFY(nvlist_add_uint64(spa->spa_load_info, | |
1914 | ZPOOL_CONFIG_LOAD_DATA_ERRORS, sle.sle_data_count) == 0); | |
428870ff BB |
1915 | } else { |
1916 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; | |
1917 | } | |
1918 | ||
1919 | if (error) { | |
1920 | if (error != ENXIO && error != EIO) | |
1921 | error = EIO; | |
1922 | return (error); | |
1923 | } | |
1924 | ||
1925 | return (verify_ok ? 0 : EIO); | |
1926 | } | |
1927 | ||
1928 | /* | |
1929 | * Find a value in the pool props object. | |
1930 | */ | |
1931 | static void | |
1932 | spa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val) | |
1933 | { | |
1934 | (void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object, | |
1935 | zpool_prop_to_name(prop), sizeof (uint64_t), 1, val); | |
1936 | } | |
1937 | ||
1938 | /* | |
1939 | * Find a value in the pool directory object. | |
1940 | */ | |
1941 | static int | |
1942 | spa_dir_prop(spa_t *spa, const char *name, uint64_t *val) | |
1943 | { | |
1944 | return (zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
1945 | name, sizeof (uint64_t), 1, val)); | |
1946 | } | |
1947 | ||
1948 | static int | |
1949 | spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err) | |
1950 | { | |
1951 | vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux); | |
1952 | return (err); | |
1953 | } | |
1954 | ||
1955 | /* | |
1956 | * Fix up config after a partly-completed split. This is done with the | |
1957 | * ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off | |
1958 | * pool have that entry in their config, but only the splitting one contains | |
1959 | * a list of all the guids of the vdevs that are being split off. | |
1960 | * | |
1961 | * This function determines what to do with that list: either rejoin | |
1962 | * all the disks to the pool, or complete the splitting process. To attempt | |
1963 | * the rejoin, each disk that is offlined is marked online again, and | |
1964 | * we do a reopen() call. If the vdev label for every disk that was | |
1965 | * marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL) | |
1966 | * then we call vdev_split() on each disk, and complete the split. | |
1967 | * | |
1968 | * Otherwise we leave the config alone, with all the vdevs in place in | |
1969 | * the original pool. | |
1970 | */ | |
1971 | static void | |
1972 | spa_try_repair(spa_t *spa, nvlist_t *config) | |
1973 | { | |
1974 | uint_t extracted; | |
1975 | uint64_t *glist; | |
1976 | uint_t i, gcount; | |
1977 | nvlist_t *nvl; | |
1978 | vdev_t **vd; | |
1979 | boolean_t attempt_reopen; | |
1980 | ||
1981 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0) | |
1982 | return; | |
1983 | ||
1984 | /* check that the config is complete */ | |
1985 | if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, | |
1986 | &glist, &gcount) != 0) | |
1987 | return; | |
1988 | ||
b8d06fca | 1989 | vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_PUSHPAGE); |
428870ff BB |
1990 | |
1991 | /* attempt to online all the vdevs & validate */ | |
1992 | attempt_reopen = B_TRUE; | |
1993 | for (i = 0; i < gcount; i++) { | |
1994 | if (glist[i] == 0) /* vdev is hole */ | |
1995 | continue; | |
1996 | ||
1997 | vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE); | |
1998 | if (vd[i] == NULL) { | |
1999 | /* | |
2000 | * Don't bother attempting to reopen the disks; | |
2001 | * just do the split. | |
2002 | */ | |
2003 | attempt_reopen = B_FALSE; | |
2004 | } else { | |
2005 | /* attempt to re-online it */ | |
2006 | vd[i]->vdev_offline = B_FALSE; | |
2007 | } | |
2008 | } | |
2009 | ||
2010 | if (attempt_reopen) { | |
2011 | vdev_reopen(spa->spa_root_vdev); | |
2012 | ||
2013 | /* check each device to see what state it's in */ | |
2014 | for (extracted = 0, i = 0; i < gcount; i++) { | |
2015 | if (vd[i] != NULL && | |
2016 | vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL) | |
2017 | break; | |
2018 | ++extracted; | |
2019 | } | |
2020 | } | |
2021 | ||
2022 | /* | |
2023 | * If every disk has been moved to the new pool, or if we never | |
2024 | * even attempted to look at them, then we split them off for | |
2025 | * good. | |
2026 | */ | |
2027 | if (!attempt_reopen || gcount == extracted) { | |
2028 | for (i = 0; i < gcount; i++) | |
2029 | if (vd[i] != NULL) | |
2030 | vdev_split(vd[i]); | |
2031 | vdev_reopen(spa->spa_root_vdev); | |
2032 | } | |
2033 | ||
2034 | kmem_free(vd, gcount * sizeof (vdev_t *)); | |
2035 | } | |
2036 | ||
2037 | static int | |
2038 | spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type, | |
2039 | boolean_t mosconfig) | |
2040 | { | |
2041 | nvlist_t *config = spa->spa_config; | |
2042 | char *ereport = FM_EREPORT_ZFS_POOL; | |
d96eb2b1 | 2043 | char *comment; |
428870ff BB |
2044 | int error; |
2045 | uint64_t pool_guid; | |
2046 | nvlist_t *nvl; | |
2047 | ||
2048 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) | |
2049 | return (EINVAL); | |
2050 | ||
d96eb2b1 DM |
2051 | ASSERT(spa->spa_comment == NULL); |
2052 | if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0) | |
2053 | spa->spa_comment = spa_strdup(comment); | |
2054 | ||
428870ff BB |
2055 | /* |
2056 | * Versioning wasn't explicitly added to the label until later, so if | |
2057 | * it's not present treat it as the initial version. | |
2058 | */ | |
2059 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, | |
2060 | &spa->spa_ubsync.ub_version) != 0) | |
2061 | spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; | |
2062 | ||
2063 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
2064 | &spa->spa_config_txg); | |
2065 | ||
2066 | if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && | |
2067 | spa_guid_exists(pool_guid, 0)) { | |
2068 | error = EEXIST; | |
2069 | } else { | |
3541dc6d | 2070 | spa->spa_config_guid = pool_guid; |
428870ff BB |
2071 | |
2072 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, | |
2073 | &nvl) == 0) { | |
2074 | VERIFY(nvlist_dup(nvl, &spa->spa_config_splitting, | |
b8d06fca | 2075 | KM_PUSHPAGE) == 0); |
428870ff BB |
2076 | } |
2077 | ||
9ae529ec CS |
2078 | nvlist_free(spa->spa_load_info); |
2079 | spa->spa_load_info = fnvlist_alloc(); | |
2080 | ||
572e2857 | 2081 | gethrestime(&spa->spa_loaded_ts); |
428870ff BB |
2082 | error = spa_load_impl(spa, pool_guid, config, state, type, |
2083 | mosconfig, &ereport); | |
2084 | } | |
2085 | ||
2086 | spa->spa_minref = refcount_count(&spa->spa_refcount); | |
572e2857 BB |
2087 | if (error) { |
2088 | if (error != EEXIST) { | |
2089 | spa->spa_loaded_ts.tv_sec = 0; | |
2090 | spa->spa_loaded_ts.tv_nsec = 0; | |
2091 | } | |
2092 | if (error != EBADF) { | |
2093 | zfs_ereport_post(ereport, spa, NULL, NULL, 0, 0); | |
2094 | } | |
2095 | } | |
428870ff BB |
2096 | spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE; |
2097 | spa->spa_ena = 0; | |
2098 | ||
2099 | return (error); | |
2100 | } | |
2101 | ||
2102 | /* | |
2103 | * Load an existing storage pool, using the pool's builtin spa_config as a | |
2104 | * source of configuration information. | |
2105 | */ | |
bf701a83 BB |
2106 | __attribute__((always_inline)) |
2107 | static inline int | |
428870ff BB |
2108 | spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config, |
2109 | spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, | |
2110 | char **ereport) | |
2111 | { | |
2112 | int error = 0; | |
2113 | nvlist_t *nvroot = NULL; | |
9ae529ec | 2114 | nvlist_t *label; |
428870ff BB |
2115 | vdev_t *rvd; |
2116 | uberblock_t *ub = &spa->spa_uberblock; | |
572e2857 | 2117 | uint64_t children, config_cache_txg = spa->spa_config_txg; |
428870ff BB |
2118 | int orig_mode = spa->spa_mode; |
2119 | int parse; | |
2120 | uint64_t obj; | |
9ae529ec | 2121 | boolean_t missing_feat_write = B_FALSE; |
428870ff BB |
2122 | |
2123 | /* | |
2124 | * If this is an untrusted config, access the pool in read-only mode. | |
2125 | * This prevents things like resilvering recently removed devices. | |
2126 | */ | |
2127 | if (!mosconfig) | |
2128 | spa->spa_mode = FREAD; | |
2129 | ||
2130 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
2131 | ||
2132 | spa->spa_load_state = state; | |
2133 | ||
2134 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot)) | |
2135 | return (EINVAL); | |
2136 | ||
2137 | parse = (type == SPA_IMPORT_EXISTING ? | |
2138 | VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT); | |
2139 | ||
2140 | /* | |
2141 | * Create "The Godfather" zio to hold all async IOs | |
2142 | */ | |
2143 | spa->spa_async_zio_root = zio_root(spa, NULL, NULL, | |
2144 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_GODFATHER); | |
2145 | ||
2146 | /* | |
2147 | * Parse the configuration into a vdev tree. We explicitly set the | |
2148 | * value that will be returned by spa_version() since parsing the | |
2149 | * configuration requires knowing the version number. | |
2150 | */ | |
2151 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
2152 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, parse); | |
2153 | spa_config_exit(spa, SCL_ALL, FTAG); | |
2154 | ||
2155 | if (error != 0) | |
2156 | return (error); | |
2157 | ||
2158 | ASSERT(spa->spa_root_vdev == rvd); | |
2159 | ||
2160 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2161 | ASSERT(spa_guid(spa) == pool_guid); | |
2162 | } | |
2163 | ||
2164 | /* | |
2165 | * Try to open all vdevs, loading each label in the process. | |
2166 | */ | |
2167 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
2168 | error = vdev_open(rvd); | |
2169 | spa_config_exit(spa, SCL_ALL, FTAG); | |
2170 | if (error != 0) | |
2171 | return (error); | |
2172 | ||
2173 | /* | |
2174 | * We need to validate the vdev labels against the configuration that | |
2175 | * we have in hand, which is dependent on the setting of mosconfig. If | |
2176 | * mosconfig is true then we're validating the vdev labels based on | |
2177 | * that config. Otherwise, we're validating against the cached config | |
2178 | * (zpool.cache) that was read when we loaded the zfs module, and then | |
2179 | * later we will recursively call spa_load() and validate against | |
2180 | * the vdev config. | |
2181 | * | |
2182 | * If we're assembling a new pool that's been split off from an | |
2183 | * existing pool, the labels haven't yet been updated so we skip | |
2184 | * validation for now. | |
2185 | */ | |
2186 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2187 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
c7f2d69d | 2188 | error = vdev_validate(rvd, mosconfig); |
428870ff BB |
2189 | spa_config_exit(spa, SCL_ALL, FTAG); |
2190 | ||
2191 | if (error != 0) | |
2192 | return (error); | |
2193 | ||
2194 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) | |
2195 | return (ENXIO); | |
2196 | } | |
2197 | ||
2198 | /* | |
2199 | * Find the best uberblock. | |
2200 | */ | |
9ae529ec | 2201 | vdev_uberblock_load(rvd, ub, &label); |
428870ff BB |
2202 | |
2203 | /* | |
2204 | * If we weren't able to find a single valid uberblock, return failure. | |
2205 | */ | |
9ae529ec CS |
2206 | if (ub->ub_txg == 0) { |
2207 | nvlist_free(label); | |
428870ff | 2208 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO)); |
9ae529ec | 2209 | } |
428870ff BB |
2210 | |
2211 | /* | |
9ae529ec | 2212 | * If the pool has an unsupported version we can't open it. |
428870ff | 2213 | */ |
9ae529ec CS |
2214 | if (!SPA_VERSION_IS_SUPPORTED(ub->ub_version)) { |
2215 | nvlist_free(label); | |
428870ff | 2216 | return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP)); |
9ae529ec CS |
2217 | } |
2218 | ||
2219 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
2220 | nvlist_t *features; | |
2221 | ||
2222 | /* | |
2223 | * If we weren't able to find what's necessary for reading the | |
2224 | * MOS in the label, return failure. | |
2225 | */ | |
2226 | if (label == NULL || nvlist_lookup_nvlist(label, | |
2227 | ZPOOL_CONFIG_FEATURES_FOR_READ, &features) != 0) { | |
2228 | nvlist_free(label); | |
2229 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, | |
2230 | ENXIO)); | |
2231 | } | |
2232 | ||
2233 | /* | |
2234 | * Update our in-core representation with the definitive values | |
2235 | * from the label. | |
2236 | */ | |
2237 | nvlist_free(spa->spa_label_features); | |
2238 | VERIFY(nvlist_dup(features, &spa->spa_label_features, 0) == 0); | |
2239 | } | |
2240 | ||
2241 | nvlist_free(label); | |
2242 | ||
2243 | /* | |
2244 | * Look through entries in the label nvlist's features_for_read. If | |
2245 | * there is a feature listed there which we don't understand then we | |
2246 | * cannot open a pool. | |
2247 | */ | |
2248 | if (ub->ub_version >= SPA_VERSION_FEATURES) { | |
2249 | nvlist_t *unsup_feat; | |
2250 | nvpair_t *nvp; | |
2251 | ||
2252 | VERIFY(nvlist_alloc(&unsup_feat, NV_UNIQUE_NAME, KM_SLEEP) == | |
2253 | 0); | |
2254 | ||
2255 | for (nvp = nvlist_next_nvpair(spa->spa_label_features, NULL); | |
2256 | nvp != NULL; | |
2257 | nvp = nvlist_next_nvpair(spa->spa_label_features, nvp)) { | |
2258 | if (!zfeature_is_supported(nvpair_name(nvp))) { | |
2259 | VERIFY(nvlist_add_string(unsup_feat, | |
2260 | nvpair_name(nvp), "") == 0); | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | if (!nvlist_empty(unsup_feat)) { | |
2265 | VERIFY(nvlist_add_nvlist(spa->spa_load_info, | |
2266 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat) == 0); | |
2267 | nvlist_free(unsup_feat); | |
2268 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, | |
2269 | ENOTSUP)); | |
2270 | } | |
2271 | ||
2272 | nvlist_free(unsup_feat); | |
2273 | } | |
428870ff BB |
2274 | |
2275 | /* | |
2276 | * If the vdev guid sum doesn't match the uberblock, we have an | |
572e2857 BB |
2277 | * incomplete configuration. We first check to see if the pool |
2278 | * is aware of the complete config (i.e ZPOOL_CONFIG_VDEV_CHILDREN). | |
2279 | * If it is, defer the vdev_guid_sum check till later so we | |
2280 | * can handle missing vdevs. | |
428870ff | 2281 | */ |
572e2857 BB |
2282 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VDEV_CHILDREN, |
2283 | &children) != 0 && mosconfig && type != SPA_IMPORT_ASSEMBLE && | |
428870ff BB |
2284 | rvd->vdev_guid_sum != ub->ub_guid_sum) |
2285 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO)); | |
2286 | ||
2287 | if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) { | |
2288 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
2289 | spa_try_repair(spa, config); | |
2290 | spa_config_exit(spa, SCL_ALL, FTAG); | |
2291 | nvlist_free(spa->spa_config_splitting); | |
2292 | spa->spa_config_splitting = NULL; | |
2293 | } | |
2294 | ||
2295 | /* | |
2296 | * Initialize internal SPA structures. | |
2297 | */ | |
2298 | spa->spa_state = POOL_STATE_ACTIVE; | |
2299 | spa->spa_ubsync = spa->spa_uberblock; | |
2300 | spa->spa_verify_min_txg = spa->spa_extreme_rewind ? | |
2301 | TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1; | |
2302 | spa->spa_first_txg = spa->spa_last_ubsync_txg ? | |
2303 | spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1; | |
2304 | spa->spa_claim_max_txg = spa->spa_first_txg; | |
2305 | spa->spa_prev_software_version = ub->ub_software_version; | |
2306 | ||
9ae529ec | 2307 | error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
428870ff BB |
2308 | if (error) |
2309 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2310 | spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; | |
2311 | ||
2312 | if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object) != 0) | |
2313 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2314 | ||
9ae529ec CS |
2315 | if (spa_version(spa) >= SPA_VERSION_FEATURES) { |
2316 | boolean_t missing_feat_read = B_FALSE; | |
b9b24bb4 | 2317 | nvlist_t *unsup_feat, *enabled_feat; |
9ae529ec CS |
2318 | |
2319 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ, | |
2320 | &spa->spa_feat_for_read_obj) != 0) { | |
2321 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2322 | } | |
2323 | ||
2324 | if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE, | |
2325 | &spa->spa_feat_for_write_obj) != 0) { | |
2326 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2327 | } | |
2328 | ||
2329 | if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS, | |
2330 | &spa->spa_feat_desc_obj) != 0) { | |
2331 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2332 | } | |
2333 | ||
b9b24bb4 CS |
2334 | enabled_feat = fnvlist_alloc(); |
2335 | unsup_feat = fnvlist_alloc(); | |
9ae529ec CS |
2336 | |
2337 | if (!feature_is_supported(spa->spa_meta_objset, | |
2338 | spa->spa_feat_for_read_obj, spa->spa_feat_desc_obj, | |
b9b24bb4 | 2339 | unsup_feat, enabled_feat)) |
9ae529ec CS |
2340 | missing_feat_read = B_TRUE; |
2341 | ||
2342 | if (spa_writeable(spa) || state == SPA_LOAD_TRYIMPORT) { | |
2343 | if (!feature_is_supported(spa->spa_meta_objset, | |
2344 | spa->spa_feat_for_write_obj, spa->spa_feat_desc_obj, | |
b9b24bb4 | 2345 | unsup_feat, enabled_feat)) { |
9ae529ec | 2346 | missing_feat_write = B_TRUE; |
b9b24bb4 | 2347 | } |
9ae529ec CS |
2348 | } |
2349 | ||
b9b24bb4 CS |
2350 | fnvlist_add_nvlist(spa->spa_load_info, |
2351 | ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat); | |
2352 | ||
9ae529ec | 2353 | if (!nvlist_empty(unsup_feat)) { |
b9b24bb4 CS |
2354 | fnvlist_add_nvlist(spa->spa_load_info, |
2355 | ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat); | |
9ae529ec CS |
2356 | } |
2357 | ||
b9b24bb4 CS |
2358 | fnvlist_free(enabled_feat); |
2359 | fnvlist_free(unsup_feat); | |
9ae529ec CS |
2360 | |
2361 | if (!missing_feat_read) { | |
2362 | fnvlist_add_boolean(spa->spa_load_info, | |
2363 | ZPOOL_CONFIG_CAN_RDONLY); | |
2364 | } | |
2365 | ||
2366 | /* | |
2367 | * If the state is SPA_LOAD_TRYIMPORT, our objective is | |
2368 | * twofold: to determine whether the pool is available for | |
2369 | * import in read-write mode and (if it is not) whether the | |
2370 | * pool is available for import in read-only mode. If the pool | |
2371 | * is available for import in read-write mode, it is displayed | |
2372 | * as available in userland; if it is not available for import | |
2373 | * in read-only mode, it is displayed as unavailable in | |
2374 | * userland. If the pool is available for import in read-only | |
2375 | * mode but not read-write mode, it is displayed as unavailable | |
2376 | * in userland with a special note that the pool is actually | |
2377 | * available for open in read-only mode. | |
2378 | * | |
2379 | * As a result, if the state is SPA_LOAD_TRYIMPORT and we are | |
2380 | * missing a feature for write, we must first determine whether | |
2381 | * the pool can be opened read-only before returning to | |
2382 | * userland in order to know whether to display the | |
2383 | * abovementioned note. | |
2384 | */ | |
2385 | if (missing_feat_read || (missing_feat_write && | |
2386 | spa_writeable(spa))) { | |
2387 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, | |
2388 | ENOTSUP)); | |
2389 | } | |
2390 | } | |
2391 | ||
2392 | spa->spa_is_initializing = B_TRUE; | |
2393 | error = dsl_pool_open(spa->spa_dsl_pool); | |
2394 | spa->spa_is_initializing = B_FALSE; | |
2395 | if (error != 0) | |
2396 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2397 | ||
428870ff BB |
2398 | if (!mosconfig) { |
2399 | uint64_t hostid; | |
2400 | nvlist_t *policy = NULL, *nvconfig; | |
2401 | ||
2402 | if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) | |
2403 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2404 | ||
2405 | if (!spa_is_root(spa) && nvlist_lookup_uint64(nvconfig, | |
b128c09f | 2406 | ZPOOL_CONFIG_HOSTID, &hostid) == 0) { |
34dc7c2f BB |
2407 | char *hostname; |
2408 | unsigned long myhostid = 0; | |
2409 | ||
428870ff | 2410 | VERIFY(nvlist_lookup_string(nvconfig, |
34dc7c2f BB |
2411 | ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); |
2412 | ||
d164b209 BB |
2413 | #ifdef _KERNEL |
2414 | myhostid = zone_get_hostid(NULL); | |
2415 | #else /* _KERNEL */ | |
2416 | /* | |
2417 | * We're emulating the system's hostid in userland, so | |
2418 | * we can't use zone_get_hostid(). | |
2419 | */ | |
34dc7c2f | 2420 | (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); |
d164b209 | 2421 | #endif /* _KERNEL */ |
34dc7c2f | 2422 | if (hostid != 0 && myhostid != 0 && |
d164b209 | 2423 | hostid != myhostid) { |
428870ff | 2424 | nvlist_free(nvconfig); |
34dc7c2f BB |
2425 | cmn_err(CE_WARN, "pool '%s' could not be " |
2426 | "loaded as it was last accessed by " | |
b128c09f | 2427 | "another system (host: %s hostid: 0x%lx). " |
3cee2262 | 2428 | "See: http://zfsonlinux.org/msg/ZFS-8000-EY", |
b128c09f | 2429 | spa_name(spa), hostname, |
34dc7c2f | 2430 | (unsigned long)hostid); |
428870ff | 2431 | return (EBADF); |
34dc7c2f BB |
2432 | } |
2433 | } | |
428870ff BB |
2434 | if (nvlist_lookup_nvlist(spa->spa_config, |
2435 | ZPOOL_REWIND_POLICY, &policy) == 0) | |
2436 | VERIFY(nvlist_add_nvlist(nvconfig, | |
2437 | ZPOOL_REWIND_POLICY, policy) == 0); | |
34dc7c2f | 2438 | |
428870ff | 2439 | spa_config_set(spa, nvconfig); |
34dc7c2f BB |
2440 | spa_unload(spa); |
2441 | spa_deactivate(spa); | |
fb5f0bc8 | 2442 | spa_activate(spa, orig_mode); |
34dc7c2f | 2443 | |
428870ff | 2444 | return (spa_load(spa, state, SPA_IMPORT_EXISTING, B_TRUE)); |
34dc7c2f BB |
2445 | } |
2446 | ||
428870ff BB |
2447 | if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj) != 0) |
2448 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2449 | error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj); | |
2450 | if (error != 0) | |
2451 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2452 | |
2453 | /* | |
2454 | * Load the bit that tells us to use the new accounting function | |
2455 | * (raid-z deflation). If we have an older pool, this will not | |
2456 | * be present. | |
2457 | */ | |
428870ff BB |
2458 | error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate); |
2459 | if (error != 0 && error != ENOENT) | |
2460 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2461 | ||
2462 | error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION, | |
2463 | &spa->spa_creation_version); | |
2464 | if (error != 0 && error != ENOENT) | |
2465 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2466 | |
2467 | /* | |
2468 | * Load the persistent error log. If we have an older pool, this will | |
2469 | * not be present. | |
2470 | */ | |
428870ff BB |
2471 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last); |
2472 | if (error != 0 && error != ENOENT) | |
2473 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 2474 | |
428870ff BB |
2475 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB, |
2476 | &spa->spa_errlog_scrub); | |
2477 | if (error != 0 && error != ENOENT) | |
2478 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2479 | |
2480 | /* | |
2481 | * Load the history object. If we have an older pool, this | |
2482 | * will not be present. | |
2483 | */ | |
428870ff BB |
2484 | error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history); |
2485 | if (error != 0 && error != ENOENT) | |
2486 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2487 | ||
2488 | /* | |
2489 | * If we're assembling the pool from the split-off vdevs of | |
2490 | * an existing pool, we don't want to attach the spares & cache | |
2491 | * devices. | |
2492 | */ | |
34dc7c2f BB |
2493 | |
2494 | /* | |
2495 | * Load any hot spares for this pool. | |
2496 | */ | |
428870ff BB |
2497 | error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object); |
2498 | if (error != 0 && error != ENOENT) | |
2499 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2500 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
2501 | ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); |
2502 | if (load_nvlist(spa, spa->spa_spares.sav_object, | |
428870ff BB |
2503 | &spa->spa_spares.sav_config) != 0) |
2504 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 2505 | |
b128c09f | 2506 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2507 | spa_load_spares(spa); |
b128c09f | 2508 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
2509 | } else if (error == 0) { |
2510 | spa->spa_spares.sav_sync = B_TRUE; | |
34dc7c2f BB |
2511 | } |
2512 | ||
2513 | /* | |
2514 | * Load any level 2 ARC devices for this pool. | |
2515 | */ | |
428870ff | 2516 | error = spa_dir_prop(spa, DMU_POOL_L2CACHE, |
34dc7c2f | 2517 | &spa->spa_l2cache.sav_object); |
428870ff BB |
2518 | if (error != 0 && error != ENOENT) |
2519 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2520 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
2521 | ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); |
2522 | if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
428870ff BB |
2523 | &spa->spa_l2cache.sav_config) != 0) |
2524 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 2525 | |
b128c09f | 2526 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2527 | spa_load_l2cache(spa); |
b128c09f | 2528 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
2529 | } else if (error == 0) { |
2530 | spa->spa_l2cache.sav_sync = B_TRUE; | |
b128c09f BB |
2531 | } |
2532 | ||
34dc7c2f BB |
2533 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
2534 | ||
428870ff BB |
2535 | error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object); |
2536 | if (error && error != ENOENT) | |
2537 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
2538 | |
2539 | if (error == 0) { | |
428870ff BB |
2540 | uint64_t autoreplace; |
2541 | ||
2542 | spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs); | |
2543 | spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace); | |
2544 | spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation); | |
2545 | spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode); | |
2546 | spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand); | |
2547 | spa_prop_find(spa, ZPOOL_PROP_DEDUPDITTO, | |
2548 | &spa->spa_dedup_ditto); | |
2549 | ||
2550 | spa->spa_autoreplace = (autoreplace != 0); | |
34dc7c2f BB |
2551 | } |
2552 | ||
2553 | /* | |
2554 | * If the 'autoreplace' property is set, then post a resource notifying | |
2555 | * the ZFS DE that it should not issue any faults for unopenable | |
2556 | * devices. We also iterate over the vdevs, and post a sysevent for any | |
2557 | * unopenable vdevs so that the normal autoreplace handler can take | |
2558 | * over. | |
2559 | */ | |
428870ff | 2560 | if (spa->spa_autoreplace && state != SPA_LOAD_TRYIMPORT) { |
34dc7c2f | 2561 | spa_check_removed(spa->spa_root_vdev); |
428870ff BB |
2562 | /* |
2563 | * For the import case, this is done in spa_import(), because | |
2564 | * at this point we're using the spare definitions from | |
2565 | * the MOS config, not necessarily from the userland config. | |
2566 | */ | |
2567 | if (state != SPA_LOAD_IMPORT) { | |
2568 | spa_aux_check_removed(&spa->spa_spares); | |
2569 | spa_aux_check_removed(&spa->spa_l2cache); | |
2570 | } | |
2571 | } | |
34dc7c2f BB |
2572 | |
2573 | /* | |
2574 | * Load the vdev state for all toplevel vdevs. | |
2575 | */ | |
2576 | vdev_load(rvd); | |
2577 | ||
2578 | /* | |
2579 | * Propagate the leaf DTLs we just loaded all the way up the tree. | |
2580 | */ | |
b128c09f | 2581 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2582 | vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
b128c09f | 2583 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 2584 | |
428870ff BB |
2585 | /* |
2586 | * Load the DDTs (dedup tables). | |
2587 | */ | |
2588 | error = ddt_load(spa); | |
2589 | if (error != 0) | |
2590 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2591 | ||
2592 | spa_update_dspace(spa); | |
2593 | ||
428870ff | 2594 | /* |
572e2857 BB |
2595 | * Validate the config, using the MOS config to fill in any |
2596 | * information which might be missing. If we fail to validate | |
2597 | * the config then declare the pool unfit for use. If we're | |
2598 | * assembling a pool from a split, the log is not transferred | |
2599 | * over. | |
428870ff BB |
2600 | */ |
2601 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2602 | nvlist_t *nvconfig; | |
2603 | ||
2604 | if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) | |
2605 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2606 | ||
572e2857 BB |
2607 | if (!spa_config_valid(spa, nvconfig)) { |
2608 | nvlist_free(nvconfig); | |
2609 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, | |
2610 | ENXIO)); | |
2611 | } | |
428870ff BB |
2612 | nvlist_free(nvconfig); |
2613 | ||
572e2857 | 2614 | /* |
9ae529ec | 2615 | * Now that we've validated the config, check the state of the |
572e2857 BB |
2616 | * root vdev. If it can't be opened, it indicates one or |
2617 | * more toplevel vdevs are faulted. | |
2618 | */ | |
2619 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) | |
2620 | return (ENXIO); | |
2621 | ||
428870ff BB |
2622 | if (spa_check_logs(spa)) { |
2623 | *ereport = FM_EREPORT_ZFS_LOG_REPLAY; | |
2624 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG, ENXIO)); | |
2625 | } | |
2626 | } | |
2627 | ||
9ae529ec CS |
2628 | if (missing_feat_write) { |
2629 | ASSERT(state == SPA_LOAD_TRYIMPORT); | |
2630 | ||
2631 | /* | |
2632 | * At this point, we know that we can open the pool in | |
2633 | * read-only mode but not read-write mode. We now have enough | |
2634 | * information and can return to userland. | |
2635 | */ | |
2636 | return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT, ENOTSUP)); | |
2637 | } | |
2638 | ||
572e2857 BB |
2639 | /* |
2640 | * We've successfully opened the pool, verify that we're ready | |
2641 | * to start pushing transactions. | |
2642 | */ | |
2643 | if (state != SPA_LOAD_TRYIMPORT) { | |
c65aa5b2 | 2644 | if ((error = spa_load_verify(spa))) |
572e2857 BB |
2645 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, |
2646 | error)); | |
2647 | } | |
2648 | ||
428870ff BB |
2649 | if (spa_writeable(spa) && (state == SPA_LOAD_RECOVER || |
2650 | spa->spa_load_max_txg == UINT64_MAX)) { | |
34dc7c2f BB |
2651 | dmu_tx_t *tx; |
2652 | int need_update = B_FALSE; | |
d6320ddb | 2653 | int c; |
fb5f0bc8 BB |
2654 | |
2655 | ASSERT(state != SPA_LOAD_TRYIMPORT); | |
34dc7c2f BB |
2656 | |
2657 | /* | |
2658 | * Claim log blocks that haven't been committed yet. | |
2659 | * This must all happen in a single txg. | |
428870ff BB |
2660 | * Note: spa_claim_max_txg is updated by spa_claim_notify(), |
2661 | * invoked from zil_claim_log_block()'s i/o done callback. | |
2662 | * Price of rollback is that we abandon the log. | |
34dc7c2f | 2663 | */ |
428870ff BB |
2664 | spa->spa_claiming = B_TRUE; |
2665 | ||
34dc7c2f BB |
2666 | tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
2667 | spa_first_txg(spa)); | |
b128c09f | 2668 | (void) dmu_objset_find(spa_name(spa), |
34dc7c2f BB |
2669 | zil_claim, tx, DS_FIND_CHILDREN); |
2670 | dmu_tx_commit(tx); | |
2671 | ||
428870ff BB |
2672 | spa->spa_claiming = B_FALSE; |
2673 | ||
2674 | spa_set_log_state(spa, SPA_LOG_GOOD); | |
34dc7c2f BB |
2675 | spa->spa_sync_on = B_TRUE; |
2676 | txg_sync_start(spa->spa_dsl_pool); | |
2677 | ||
2678 | /* | |
428870ff BB |
2679 | * Wait for all claims to sync. We sync up to the highest |
2680 | * claimed log block birth time so that claimed log blocks | |
2681 | * don't appear to be from the future. spa_claim_max_txg | |
2682 | * will have been set for us by either zil_check_log_chain() | |
2683 | * (invoked from spa_check_logs()) or zil_claim() above. | |
34dc7c2f | 2684 | */ |
428870ff | 2685 | txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg); |
34dc7c2f BB |
2686 | |
2687 | /* | |
2688 | * If the config cache is stale, or we have uninitialized | |
2689 | * metaslabs (see spa_vdev_add()), then update the config. | |
45d1cae3 | 2690 | * |
572e2857 | 2691 | * If this is a verbatim import, trust the current |
45d1cae3 | 2692 | * in-core spa_config and update the disk labels. |
34dc7c2f BB |
2693 | */ |
2694 | if (config_cache_txg != spa->spa_config_txg || | |
572e2857 BB |
2695 | state == SPA_LOAD_IMPORT || |
2696 | state == SPA_LOAD_RECOVER || | |
2697 | (spa->spa_import_flags & ZFS_IMPORT_VERBATIM)) | |
34dc7c2f BB |
2698 | need_update = B_TRUE; |
2699 | ||
d6320ddb | 2700 | for (c = 0; c < rvd->vdev_children; c++) |
34dc7c2f BB |
2701 | if (rvd->vdev_child[c]->vdev_ms_array == 0) |
2702 | need_update = B_TRUE; | |
2703 | ||
2704 | /* | |
2705 | * Update the config cache asychronously in case we're the | |
2706 | * root pool, in which case the config cache isn't writable yet. | |
2707 | */ | |
2708 | if (need_update) | |
2709 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
fb5f0bc8 BB |
2710 | |
2711 | /* | |
2712 | * Check all DTLs to see if anything needs resilvering. | |
2713 | */ | |
428870ff BB |
2714 | if (!dsl_scan_resilvering(spa->spa_dsl_pool) && |
2715 | vdev_resilver_needed(rvd, NULL, NULL)) | |
fb5f0bc8 | 2716 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
428870ff | 2717 | |
6f1ffb06 MA |
2718 | /* |
2719 | * Log the fact that we booted up (so that we can detect if | |
2720 | * we rebooted in the middle of an operation). | |
2721 | */ | |
2722 | spa_history_log_version(spa, "open"); | |
2723 | ||
428870ff BB |
2724 | /* |
2725 | * Delete any inconsistent datasets. | |
2726 | */ | |
2727 | (void) dmu_objset_find(spa_name(spa), | |
2728 | dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN); | |
2729 | ||
2730 | /* | |
2731 | * Clean up any stale temporary dataset userrefs. | |
2732 | */ | |
2733 | dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool); | |
34dc7c2f BB |
2734 | } |
2735 | ||
428870ff BB |
2736 | return (0); |
2737 | } | |
34dc7c2f | 2738 | |
428870ff BB |
2739 | static int |
2740 | spa_load_retry(spa_t *spa, spa_load_state_t state, int mosconfig) | |
2741 | { | |
572e2857 BB |
2742 | int mode = spa->spa_mode; |
2743 | ||
428870ff BB |
2744 | spa_unload(spa); |
2745 | spa_deactivate(spa); | |
2746 | ||
2747 | spa->spa_load_max_txg--; | |
2748 | ||
572e2857 | 2749 | spa_activate(spa, mode); |
428870ff BB |
2750 | spa_async_suspend(spa); |
2751 | ||
2752 | return (spa_load(spa, state, SPA_IMPORT_EXISTING, mosconfig)); | |
2753 | } | |
2754 | ||
9ae529ec CS |
2755 | /* |
2756 | * If spa_load() fails this function will try loading prior txg's. If | |
2757 | * 'state' is SPA_LOAD_RECOVER and one of these loads succeeds the pool | |
2758 | * will be rewound to that txg. If 'state' is not SPA_LOAD_RECOVER this | |
2759 | * function will not rewind the pool and will return the same error as | |
2760 | * spa_load(). | |
2761 | */ | |
428870ff BB |
2762 | static int |
2763 | spa_load_best(spa_t *spa, spa_load_state_t state, int mosconfig, | |
2764 | uint64_t max_request, int rewind_flags) | |
2765 | { | |
9ae529ec | 2766 | nvlist_t *loadinfo = NULL; |
428870ff BB |
2767 | nvlist_t *config = NULL; |
2768 | int load_error, rewind_error; | |
2769 | uint64_t safe_rewind_txg; | |
2770 | uint64_t min_txg; | |
2771 | ||
2772 | if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) { | |
2773 | spa->spa_load_max_txg = spa->spa_load_txg; | |
2774 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
2775 | } else { | |
2776 | spa->spa_load_max_txg = max_request; | |
2777 | } | |
2778 | ||
2779 | load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING, | |
2780 | mosconfig); | |
2781 | if (load_error == 0) | |
2782 | return (0); | |
2783 | ||
2784 | if (spa->spa_root_vdev != NULL) | |
2785 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); | |
2786 | ||
2787 | spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg; | |
2788 | spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp; | |
2789 | ||
2790 | if (rewind_flags & ZPOOL_NEVER_REWIND) { | |
2791 | nvlist_free(config); | |
2792 | return (load_error); | |
2793 | } | |
2794 | ||
9ae529ec CS |
2795 | if (state == SPA_LOAD_RECOVER) { |
2796 | /* Price of rolling back is discarding txgs, including log */ | |
428870ff | 2797 | spa_set_log_state(spa, SPA_LOG_CLEAR); |
9ae529ec CS |
2798 | } else { |
2799 | /* | |
2800 | * If we aren't rolling back save the load info from our first | |
2801 | * import attempt so that we can restore it after attempting | |
2802 | * to rewind. | |
2803 | */ | |
2804 | loadinfo = spa->spa_load_info; | |
2805 | spa->spa_load_info = fnvlist_alloc(); | |
2806 | } | |
428870ff BB |
2807 | |
2808 | spa->spa_load_max_txg = spa->spa_last_ubsync_txg; | |
2809 | safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE; | |
2810 | min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ? | |
2811 | TXG_INITIAL : safe_rewind_txg; | |
2812 | ||
2813 | /* | |
2814 | * Continue as long as we're finding errors, we're still within | |
2815 | * the acceptable rewind range, and we're still finding uberblocks | |
2816 | */ | |
2817 | while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg && | |
2818 | spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) { | |
2819 | if (spa->spa_load_max_txg < safe_rewind_txg) | |
2820 | spa->spa_extreme_rewind = B_TRUE; | |
2821 | rewind_error = spa_load_retry(spa, state, mosconfig); | |
2822 | } | |
2823 | ||
428870ff BB |
2824 | spa->spa_extreme_rewind = B_FALSE; |
2825 | spa->spa_load_max_txg = UINT64_MAX; | |
2826 | ||
2827 | if (config && (rewind_error || state != SPA_LOAD_RECOVER)) | |
2828 | spa_config_set(spa, config); | |
2829 | ||
9ae529ec CS |
2830 | if (state == SPA_LOAD_RECOVER) { |
2831 | ASSERT3P(loadinfo, ==, NULL); | |
2832 | return (rewind_error); | |
2833 | } else { | |
2834 | /* Store the rewind info as part of the initial load info */ | |
2835 | fnvlist_add_nvlist(loadinfo, ZPOOL_CONFIG_REWIND_INFO, | |
2836 | spa->spa_load_info); | |
2837 | ||
2838 | /* Restore the initial load info */ | |
2839 | fnvlist_free(spa->spa_load_info); | |
2840 | spa->spa_load_info = loadinfo; | |
2841 | ||
2842 | return (load_error); | |
2843 | } | |
34dc7c2f BB |
2844 | } |
2845 | ||
2846 | /* | |
2847 | * Pool Open/Import | |
2848 | * | |
2849 | * The import case is identical to an open except that the configuration is sent | |
2850 | * down from userland, instead of grabbed from the configuration cache. For the | |
2851 | * case of an open, the pool configuration will exist in the | |
2852 | * POOL_STATE_UNINITIALIZED state. | |
2853 | * | |
2854 | * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
2855 | * the same time open the pool, without having to keep around the spa_t in some | |
2856 | * ambiguous state. | |
2857 | */ | |
2858 | static int | |
428870ff BB |
2859 | spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, |
2860 | nvlist_t **config) | |
34dc7c2f BB |
2861 | { |
2862 | spa_t *spa; | |
572e2857 | 2863 | spa_load_state_t state = SPA_LOAD_OPEN; |
34dc7c2f | 2864 | int error; |
34dc7c2f | 2865 | int locked = B_FALSE; |
526af785 | 2866 | int firstopen = B_FALSE; |
34dc7c2f BB |
2867 | |
2868 | *spapp = NULL; | |
2869 | ||
2870 | /* | |
2871 | * As disgusting as this is, we need to support recursive calls to this | |
2872 | * function because dsl_dir_open() is called during spa_load(), and ends | |
2873 | * up calling spa_open() again. The real fix is to figure out how to | |
2874 | * avoid dsl_dir_open() calling this in the first place. | |
2875 | */ | |
2876 | if (mutex_owner(&spa_namespace_lock) != curthread) { | |
2877 | mutex_enter(&spa_namespace_lock); | |
2878 | locked = B_TRUE; | |
2879 | } | |
2880 | ||
2881 | if ((spa = spa_lookup(pool)) == NULL) { | |
2882 | if (locked) | |
2883 | mutex_exit(&spa_namespace_lock); | |
2884 | return (ENOENT); | |
2885 | } | |
428870ff | 2886 | |
34dc7c2f | 2887 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) { |
428870ff BB |
2888 | zpool_rewind_policy_t policy; |
2889 | ||
526af785 PJD |
2890 | firstopen = B_TRUE; |
2891 | ||
428870ff BB |
2892 | zpool_get_rewind_policy(nvpolicy ? nvpolicy : spa->spa_config, |
2893 | &policy); | |
2894 | if (policy.zrp_request & ZPOOL_DO_REWIND) | |
2895 | state = SPA_LOAD_RECOVER; | |
34dc7c2f | 2896 | |
fb5f0bc8 | 2897 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 2898 | |
428870ff BB |
2899 | if (state != SPA_LOAD_RECOVER) |
2900 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
2901 | ||
2902 | error = spa_load_best(spa, state, B_FALSE, policy.zrp_txg, | |
2903 | policy.zrp_request); | |
34dc7c2f BB |
2904 | |
2905 | if (error == EBADF) { | |
2906 | /* | |
2907 | * If vdev_validate() returns failure (indicated by | |
2908 | * EBADF), it indicates that one of the vdevs indicates | |
2909 | * that the pool has been exported or destroyed. If | |
2910 | * this is the case, the config cache is out of sync and | |
2911 | * we should remove the pool from the namespace. | |
2912 | */ | |
34dc7c2f BB |
2913 | spa_unload(spa); |
2914 | spa_deactivate(spa); | |
b128c09f | 2915 | spa_config_sync(spa, B_TRUE, B_TRUE); |
34dc7c2f | 2916 | spa_remove(spa); |
34dc7c2f BB |
2917 | if (locked) |
2918 | mutex_exit(&spa_namespace_lock); | |
2919 | return (ENOENT); | |
2920 | } | |
2921 | ||
2922 | if (error) { | |
2923 | /* | |
2924 | * We can't open the pool, but we still have useful | |
2925 | * information: the state of each vdev after the | |
2926 | * attempted vdev_open(). Return this to the user. | |
2927 | */ | |
572e2857 | 2928 | if (config != NULL && spa->spa_config) { |
428870ff | 2929 | VERIFY(nvlist_dup(spa->spa_config, config, |
b8d06fca | 2930 | KM_PUSHPAGE) == 0); |
572e2857 BB |
2931 | VERIFY(nvlist_add_nvlist(*config, |
2932 | ZPOOL_CONFIG_LOAD_INFO, | |
2933 | spa->spa_load_info) == 0); | |
2934 | } | |
34dc7c2f BB |
2935 | spa_unload(spa); |
2936 | spa_deactivate(spa); | |
428870ff | 2937 | spa->spa_last_open_failed = error; |
34dc7c2f BB |
2938 | if (locked) |
2939 | mutex_exit(&spa_namespace_lock); | |
2940 | *spapp = NULL; | |
2941 | return (error); | |
34dc7c2f | 2942 | } |
34dc7c2f BB |
2943 | } |
2944 | ||
2945 | spa_open_ref(spa, tag); | |
2946 | ||
b128c09f | 2947 | if (config != NULL) |
34dc7c2f | 2948 | *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f | 2949 | |
572e2857 BB |
2950 | /* |
2951 | * If we've recovered the pool, pass back any information we | |
2952 | * gathered while doing the load. | |
2953 | */ | |
2954 | if (state == SPA_LOAD_RECOVER) { | |
2955 | VERIFY(nvlist_add_nvlist(*config, ZPOOL_CONFIG_LOAD_INFO, | |
2956 | spa->spa_load_info) == 0); | |
2957 | } | |
2958 | ||
428870ff BB |
2959 | if (locked) { |
2960 | spa->spa_last_open_failed = 0; | |
2961 | spa->spa_last_ubsync_txg = 0; | |
2962 | spa->spa_load_txg = 0; | |
2963 | mutex_exit(&spa_namespace_lock); | |
2964 | } | |
2965 | ||
526af785 PJD |
2966 | #ifdef _KERNEL |
2967 | if (firstopen) | |
2968 | zvol_create_minors(spa->spa_name); | |
2969 | #endif | |
2970 | ||
428870ff BB |
2971 | *spapp = spa; |
2972 | ||
34dc7c2f BB |
2973 | return (0); |
2974 | } | |
2975 | ||
428870ff BB |
2976 | int |
2977 | spa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy, | |
2978 | nvlist_t **config) | |
2979 | { | |
2980 | return (spa_open_common(name, spapp, tag, policy, config)); | |
2981 | } | |
2982 | ||
34dc7c2f BB |
2983 | int |
2984 | spa_open(const char *name, spa_t **spapp, void *tag) | |
2985 | { | |
428870ff | 2986 | return (spa_open_common(name, spapp, tag, NULL, NULL)); |
34dc7c2f BB |
2987 | } |
2988 | ||
2989 | /* | |
2990 | * Lookup the given spa_t, incrementing the inject count in the process, | |
2991 | * preventing it from being exported or destroyed. | |
2992 | */ | |
2993 | spa_t * | |
2994 | spa_inject_addref(char *name) | |
2995 | { | |
2996 | spa_t *spa; | |
2997 | ||
2998 | mutex_enter(&spa_namespace_lock); | |
2999 | if ((spa = spa_lookup(name)) == NULL) { | |
3000 | mutex_exit(&spa_namespace_lock); | |
3001 | return (NULL); | |
3002 | } | |
3003 | spa->spa_inject_ref++; | |
3004 | mutex_exit(&spa_namespace_lock); | |
3005 | ||
3006 | return (spa); | |
3007 | } | |
3008 | ||
3009 | void | |
3010 | spa_inject_delref(spa_t *spa) | |
3011 | { | |
3012 | mutex_enter(&spa_namespace_lock); | |
3013 | spa->spa_inject_ref--; | |
3014 | mutex_exit(&spa_namespace_lock); | |
3015 | } | |
3016 | ||
3017 | /* | |
3018 | * Add spares device information to the nvlist. | |
3019 | */ | |
3020 | static void | |
3021 | spa_add_spares(spa_t *spa, nvlist_t *config) | |
3022 | { | |
3023 | nvlist_t **spares; | |
3024 | uint_t i, nspares; | |
3025 | nvlist_t *nvroot; | |
3026 | uint64_t guid; | |
3027 | vdev_stat_t *vs; | |
3028 | uint_t vsc; | |
3029 | uint64_t pool; | |
3030 | ||
9babb374 BB |
3031 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
3032 | ||
34dc7c2f BB |
3033 | if (spa->spa_spares.sav_count == 0) |
3034 | return; | |
3035 | ||
3036 | VERIFY(nvlist_lookup_nvlist(config, | |
3037 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
3038 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
3039 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
3040 | if (nspares != 0) { | |
3041 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
3042 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
3043 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
3044 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
3045 | ||
3046 | /* | |
3047 | * Go through and find any spares which have since been | |
3048 | * repurposed as an active spare. If this is the case, update | |
3049 | * their status appropriately. | |
3050 | */ | |
3051 | for (i = 0; i < nspares; i++) { | |
3052 | VERIFY(nvlist_lookup_uint64(spares[i], | |
3053 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
b128c09f BB |
3054 | if (spa_spare_exists(guid, &pool, NULL) && |
3055 | pool != 0ULL) { | |
34dc7c2f | 3056 | VERIFY(nvlist_lookup_uint64_array( |
428870ff | 3057 | spares[i], ZPOOL_CONFIG_VDEV_STATS, |
34dc7c2f BB |
3058 | (uint64_t **)&vs, &vsc) == 0); |
3059 | vs->vs_state = VDEV_STATE_CANT_OPEN; | |
3060 | vs->vs_aux = VDEV_AUX_SPARED; | |
3061 | } | |
3062 | } | |
3063 | } | |
3064 | } | |
3065 | ||
3066 | /* | |
3067 | * Add l2cache device information to the nvlist, including vdev stats. | |
3068 | */ | |
3069 | static void | |
3070 | spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
3071 | { | |
3072 | nvlist_t **l2cache; | |
3073 | uint_t i, j, nl2cache; | |
3074 | nvlist_t *nvroot; | |
3075 | uint64_t guid; | |
3076 | vdev_t *vd; | |
3077 | vdev_stat_t *vs; | |
3078 | uint_t vsc; | |
3079 | ||
9babb374 BB |
3080 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
3081 | ||
34dc7c2f BB |
3082 | if (spa->spa_l2cache.sav_count == 0) |
3083 | return; | |
3084 | ||
34dc7c2f BB |
3085 | VERIFY(nvlist_lookup_nvlist(config, |
3086 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
3087 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
3088 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
3089 | if (nl2cache != 0) { | |
3090 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
3091 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
3092 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
3093 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
3094 | ||
3095 | /* | |
3096 | * Update level 2 cache device stats. | |
3097 | */ | |
3098 | ||
3099 | for (i = 0; i < nl2cache; i++) { | |
3100 | VERIFY(nvlist_lookup_uint64(l2cache[i], | |
3101 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
3102 | ||
3103 | vd = NULL; | |
3104 | for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
3105 | if (guid == | |
3106 | spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
3107 | vd = spa->spa_l2cache.sav_vdevs[j]; | |
3108 | break; | |
3109 | } | |
3110 | } | |
3111 | ASSERT(vd != NULL); | |
3112 | ||
3113 | VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
428870ff BB |
3114 | ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) |
3115 | == 0); | |
34dc7c2f BB |
3116 | vdev_get_stats(vd, vs); |
3117 | } | |
3118 | } | |
34dc7c2f BB |
3119 | } |
3120 | ||
9ae529ec CS |
3121 | static void |
3122 | spa_add_feature_stats(spa_t *spa, nvlist_t *config) | |
3123 | { | |
3124 | nvlist_t *features; | |
3125 | zap_cursor_t zc; | |
3126 | zap_attribute_t za; | |
3127 | ||
3128 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); | |
3129 | VERIFY(nvlist_alloc(&features, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
3130 | ||
3131 | if (spa->spa_feat_for_read_obj != 0) { | |
3132 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
3133 | spa->spa_feat_for_read_obj); | |
3134 | zap_cursor_retrieve(&zc, &za) == 0; | |
3135 | zap_cursor_advance(&zc)) { | |
3136 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
3137 | za.za_num_integers == 1); | |
3138 | VERIFY3U(0, ==, nvlist_add_uint64(features, za.za_name, | |
3139 | za.za_first_integer)); | |
3140 | } | |
3141 | zap_cursor_fini(&zc); | |
3142 | } | |
3143 | ||
3144 | if (spa->spa_feat_for_write_obj != 0) { | |
3145 | for (zap_cursor_init(&zc, spa->spa_meta_objset, | |
3146 | spa->spa_feat_for_write_obj); | |
3147 | zap_cursor_retrieve(&zc, &za) == 0; | |
3148 | zap_cursor_advance(&zc)) { | |
3149 | ASSERT(za.za_integer_length == sizeof (uint64_t) && | |
3150 | za.za_num_integers == 1); | |
3151 | VERIFY3U(0, ==, nvlist_add_uint64(features, za.za_name, | |
3152 | za.za_first_integer)); | |
3153 | } | |
3154 | zap_cursor_fini(&zc); | |
3155 | } | |
3156 | ||
3157 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS, | |
3158 | features) == 0); | |
3159 | nvlist_free(features); | |
3160 | } | |
3161 | ||
34dc7c2f | 3162 | int |
9ae529ec CS |
3163 | spa_get_stats(const char *name, nvlist_t **config, |
3164 | char *altroot, size_t buflen) | |
34dc7c2f BB |
3165 | { |
3166 | int error; | |
3167 | spa_t *spa; | |
3168 | ||
3169 | *config = NULL; | |
428870ff | 3170 | error = spa_open_common(name, &spa, FTAG, NULL, config); |
34dc7c2f | 3171 | |
9babb374 BB |
3172 | if (spa != NULL) { |
3173 | /* | |
3174 | * This still leaves a window of inconsistency where the spares | |
3175 | * or l2cache devices could change and the config would be | |
3176 | * self-inconsistent. | |
3177 | */ | |
3178 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
34dc7c2f | 3179 | |
9babb374 | 3180 | if (*config != NULL) { |
572e2857 BB |
3181 | uint64_t loadtimes[2]; |
3182 | ||
3183 | loadtimes[0] = spa->spa_loaded_ts.tv_sec; | |
3184 | loadtimes[1] = spa->spa_loaded_ts.tv_nsec; | |
3185 | VERIFY(nvlist_add_uint64_array(*config, | |
3186 | ZPOOL_CONFIG_LOADED_TIME, loadtimes, 2) == 0); | |
3187 | ||
b128c09f | 3188 | VERIFY(nvlist_add_uint64(*config, |
9babb374 BB |
3189 | ZPOOL_CONFIG_ERRCOUNT, |
3190 | spa_get_errlog_size(spa)) == 0); | |
3191 | ||
3192 | if (spa_suspended(spa)) | |
3193 | VERIFY(nvlist_add_uint64(*config, | |
3194 | ZPOOL_CONFIG_SUSPENDED, | |
3195 | spa->spa_failmode) == 0); | |
b128c09f | 3196 | |
9babb374 BB |
3197 | spa_add_spares(spa, *config); |
3198 | spa_add_l2cache(spa, *config); | |
9ae529ec | 3199 | spa_add_feature_stats(spa, *config); |
9babb374 | 3200 | } |
34dc7c2f BB |
3201 | } |
3202 | ||
3203 | /* | |
3204 | * We want to get the alternate root even for faulted pools, so we cheat | |
3205 | * and call spa_lookup() directly. | |
3206 | */ | |
3207 | if (altroot) { | |
3208 | if (spa == NULL) { | |
3209 | mutex_enter(&spa_namespace_lock); | |
3210 | spa = spa_lookup(name); | |
3211 | if (spa) | |
3212 | spa_altroot(spa, altroot, buflen); | |
3213 | else | |
3214 | altroot[0] = '\0'; | |
3215 | spa = NULL; | |
3216 | mutex_exit(&spa_namespace_lock); | |
3217 | } else { | |
3218 | spa_altroot(spa, altroot, buflen); | |
3219 | } | |
3220 | } | |
3221 | ||
9babb374 BB |
3222 | if (spa != NULL) { |
3223 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
34dc7c2f | 3224 | spa_close(spa, FTAG); |
9babb374 | 3225 | } |
34dc7c2f BB |
3226 | |
3227 | return (error); | |
3228 | } | |
3229 | ||
3230 | /* | |
3231 | * Validate that the auxiliary device array is well formed. We must have an | |
3232 | * array of nvlists, each which describes a valid leaf vdev. If this is an | |
3233 | * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
3234 | * specified, as long as they are well-formed. | |
3235 | */ | |
3236 | static int | |
3237 | spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, | |
3238 | spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
3239 | vdev_labeltype_t label) | |
3240 | { | |
3241 | nvlist_t **dev; | |
3242 | uint_t i, ndev; | |
3243 | vdev_t *vd; | |
3244 | int error; | |
3245 | ||
b128c09f BB |
3246 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
3247 | ||
34dc7c2f BB |
3248 | /* |
3249 | * It's acceptable to have no devs specified. | |
3250 | */ | |
3251 | if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) | |
3252 | return (0); | |
3253 | ||
3254 | if (ndev == 0) | |
3255 | return (EINVAL); | |
3256 | ||
3257 | /* | |
3258 | * Make sure the pool is formatted with a version that supports this | |
3259 | * device type. | |
3260 | */ | |
3261 | if (spa_version(spa) < version) | |
3262 | return (ENOTSUP); | |
3263 | ||
3264 | /* | |
3265 | * Set the pending device list so we correctly handle device in-use | |
3266 | * checking. | |
3267 | */ | |
3268 | sav->sav_pending = dev; | |
3269 | sav->sav_npending = ndev; | |
3270 | ||
3271 | for (i = 0; i < ndev; i++) { | |
3272 | if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
3273 | mode)) != 0) | |
3274 | goto out; | |
3275 | ||
3276 | if (!vd->vdev_ops->vdev_op_leaf) { | |
3277 | vdev_free(vd); | |
3278 | error = EINVAL; | |
3279 | goto out; | |
3280 | } | |
3281 | ||
3282 | /* | |
b128c09f BB |
3283 | * The L2ARC currently only supports disk devices in |
3284 | * kernel context. For user-level testing, we allow it. | |
34dc7c2f | 3285 | */ |
b128c09f | 3286 | #ifdef _KERNEL |
34dc7c2f BB |
3287 | if ((strcmp(config, ZPOOL_CONFIG_L2CACHE) == 0) && |
3288 | strcmp(vd->vdev_ops->vdev_op_type, VDEV_TYPE_DISK) != 0) { | |
3289 | error = ENOTBLK; | |
5ffb9d1d | 3290 | vdev_free(vd); |
34dc7c2f BB |
3291 | goto out; |
3292 | } | |
b128c09f | 3293 | #endif |
34dc7c2f BB |
3294 | vd->vdev_top = vd; |
3295 | ||
3296 | if ((error = vdev_open(vd)) == 0 && | |
3297 | (error = vdev_label_init(vd, crtxg, label)) == 0) { | |
3298 | VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
3299 | vd->vdev_guid) == 0); | |
3300 | } | |
3301 | ||
3302 | vdev_free(vd); | |
3303 | ||
3304 | if (error && | |
3305 | (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
3306 | goto out; | |
3307 | else | |
3308 | error = 0; | |
3309 | } | |
3310 | ||
3311 | out: | |
3312 | sav->sav_pending = NULL; | |
3313 | sav->sav_npending = 0; | |
3314 | return (error); | |
3315 | } | |
3316 | ||
3317 | static int | |
3318 | spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
3319 | { | |
3320 | int error; | |
3321 | ||
b128c09f BB |
3322 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
3323 | ||
34dc7c2f BB |
3324 | if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, |
3325 | &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
3326 | VDEV_LABEL_SPARE)) != 0) { | |
3327 | return (error); | |
3328 | } | |
3329 | ||
3330 | return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
3331 | &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
3332 | VDEV_LABEL_L2CACHE)); | |
3333 | } | |
3334 | ||
3335 | static void | |
3336 | spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
3337 | const char *config) | |
3338 | { | |
3339 | int i; | |
3340 | ||
3341 | if (sav->sav_config != NULL) { | |
3342 | nvlist_t **olddevs; | |
3343 | uint_t oldndevs; | |
3344 | nvlist_t **newdevs; | |
3345 | ||
3346 | /* | |
3347 | * Generate new dev list by concatentating with the | |
3348 | * current dev list. | |
3349 | */ | |
3350 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
3351 | &olddevs, &oldndevs) == 0); | |
3352 | ||
3353 | newdevs = kmem_alloc(sizeof (void *) * | |
b8d06fca | 3354 | (ndevs + oldndevs), KM_PUSHPAGE); |
34dc7c2f BB |
3355 | for (i = 0; i < oldndevs; i++) |
3356 | VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
b8d06fca | 3357 | KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3358 | for (i = 0; i < ndevs; i++) |
3359 | VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
b8d06fca | 3360 | KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3361 | |
3362 | VERIFY(nvlist_remove(sav->sav_config, config, | |
3363 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
3364 | ||
3365 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
3366 | config, newdevs, ndevs + oldndevs) == 0); | |
3367 | for (i = 0; i < oldndevs + ndevs; i++) | |
3368 | nvlist_free(newdevs[i]); | |
3369 | kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
3370 | } else { | |
3371 | /* | |
3372 | * Generate a new dev list. | |
3373 | */ | |
3374 | VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
b8d06fca | 3375 | KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3376 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, |
3377 | devs, ndevs) == 0); | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | /* | |
3382 | * Stop and drop level 2 ARC devices | |
3383 | */ | |
3384 | void | |
3385 | spa_l2cache_drop(spa_t *spa) | |
3386 | { | |
3387 | vdev_t *vd; | |
3388 | int i; | |
3389 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
3390 | ||
3391 | for (i = 0; i < sav->sav_count; i++) { | |
3392 | uint64_t pool; | |
3393 | ||
3394 | vd = sav->sav_vdevs[i]; | |
3395 | ASSERT(vd != NULL); | |
3396 | ||
fb5f0bc8 BB |
3397 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
3398 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 3399 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
3400 | } |
3401 | } | |
3402 | ||
3403 | /* | |
3404 | * Pool Creation | |
3405 | */ | |
3406 | int | |
3407 | spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, | |
6f1ffb06 | 3408 | nvlist_t *zplprops) |
34dc7c2f BB |
3409 | { |
3410 | spa_t *spa; | |
3411 | char *altroot = NULL; | |
3412 | vdev_t *rvd; | |
3413 | dsl_pool_t *dp; | |
3414 | dmu_tx_t *tx; | |
9babb374 | 3415 | int error = 0; |
34dc7c2f BB |
3416 | uint64_t txg = TXG_INITIAL; |
3417 | nvlist_t **spares, **l2cache; | |
3418 | uint_t nspares, nl2cache; | |
428870ff | 3419 | uint64_t version, obj; |
9ae529ec CS |
3420 | boolean_t has_features; |
3421 | nvpair_t *elem; | |
d6320ddb | 3422 | int c; |
34dc7c2f BB |
3423 | |
3424 | /* | |
3425 | * If this pool already exists, return failure. | |
3426 | */ | |
3427 | mutex_enter(&spa_namespace_lock); | |
3428 | if (spa_lookup(pool) != NULL) { | |
3429 | mutex_exit(&spa_namespace_lock); | |
3430 | return (EEXIST); | |
3431 | } | |
3432 | ||
3433 | /* | |
3434 | * Allocate a new spa_t structure. | |
3435 | */ | |
3436 | (void) nvlist_lookup_string(props, | |
3437 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
428870ff | 3438 | spa = spa_add(pool, NULL, altroot); |
fb5f0bc8 | 3439 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 3440 | |
34dc7c2f | 3441 | if (props && (error = spa_prop_validate(spa, props))) { |
34dc7c2f BB |
3442 | spa_deactivate(spa); |
3443 | spa_remove(spa); | |
b128c09f | 3444 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
3445 | return (error); |
3446 | } | |
3447 | ||
9ae529ec CS |
3448 | has_features = B_FALSE; |
3449 | for (elem = nvlist_next_nvpair(props, NULL); | |
3450 | elem != NULL; elem = nvlist_next_nvpair(props, elem)) { | |
3451 | if (zpool_prop_feature(nvpair_name(elem))) | |
3452 | has_features = B_TRUE; | |
3453 | } | |
3454 | ||
3455 | if (has_features || nvlist_lookup_uint64(props, | |
3456 | zpool_prop_to_name(ZPOOL_PROP_VERSION), &version) != 0) { | |
34dc7c2f | 3457 | version = SPA_VERSION; |
9ae529ec CS |
3458 | } |
3459 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); | |
428870ff BB |
3460 | |
3461 | spa->spa_first_txg = txg; | |
3462 | spa->spa_uberblock.ub_txg = txg - 1; | |
34dc7c2f BB |
3463 | spa->spa_uberblock.ub_version = version; |
3464 | spa->spa_ubsync = spa->spa_uberblock; | |
3465 | ||
9babb374 BB |
3466 | /* |
3467 | * Create "The Godfather" zio to hold all async IOs | |
3468 | */ | |
3469 | spa->spa_async_zio_root = zio_root(spa, NULL, NULL, | |
3470 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_GODFATHER); | |
3471 | ||
34dc7c2f BB |
3472 | /* |
3473 | * Create the root vdev. | |
3474 | */ | |
b128c09f | 3475 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
3476 | |
3477 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); | |
3478 | ||
3479 | ASSERT(error != 0 || rvd != NULL); | |
3480 | ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
3481 | ||
3482 | if (error == 0 && !zfs_allocatable_devs(nvroot)) | |
3483 | error = EINVAL; | |
3484 | ||
3485 | if (error == 0 && | |
3486 | (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
3487 | (error = spa_validate_aux(spa, nvroot, txg, | |
3488 | VDEV_ALLOC_ADD)) == 0) { | |
d6320ddb | 3489 | for (c = 0; c < rvd->vdev_children; c++) { |
9babb374 BB |
3490 | vdev_metaslab_set_size(rvd->vdev_child[c]); |
3491 | vdev_expand(rvd->vdev_child[c], txg); | |
3492 | } | |
34dc7c2f BB |
3493 | } |
3494 | ||
b128c09f | 3495 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3496 | |
3497 | if (error != 0) { | |
3498 | spa_unload(spa); | |
3499 | spa_deactivate(spa); | |
3500 | spa_remove(spa); | |
3501 | mutex_exit(&spa_namespace_lock); | |
3502 | return (error); | |
3503 | } | |
3504 | ||
3505 | /* | |
3506 | * Get the list of spares, if specified. | |
3507 | */ | |
3508 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
3509 | &spares, &nspares) == 0) { | |
3510 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, | |
b8d06fca | 3511 | KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3512 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
3513 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 3514 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3515 | spa_load_spares(spa); |
b128c09f | 3516 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3517 | spa->spa_spares.sav_sync = B_TRUE; |
3518 | } | |
3519 | ||
3520 | /* | |
3521 | * Get the list of level 2 cache devices, if specified. | |
3522 | */ | |
3523 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
3524 | &l2cache, &nl2cache) == 0) { | |
3525 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
b8d06fca | 3526 | NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3527 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
3528 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 3529 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3530 | spa_load_l2cache(spa); |
b128c09f | 3531 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3532 | spa->spa_l2cache.sav_sync = B_TRUE; |
3533 | } | |
3534 | ||
9ae529ec | 3535 | spa->spa_is_initializing = B_TRUE; |
b128c09f | 3536 | spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, txg); |
34dc7c2f | 3537 | spa->spa_meta_objset = dp->dp_meta_objset; |
9ae529ec | 3538 | spa->spa_is_initializing = B_FALSE; |
34dc7c2f | 3539 | |
428870ff BB |
3540 | /* |
3541 | * Create DDTs (dedup tables). | |
3542 | */ | |
3543 | ddt_create(spa); | |
3544 | ||
3545 | spa_update_dspace(spa); | |
3546 | ||
34dc7c2f BB |
3547 | tx = dmu_tx_create_assigned(dp, txg); |
3548 | ||
3549 | /* | |
3550 | * Create the pool config object. | |
3551 | */ | |
3552 | spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
b128c09f | 3553 | DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, |
34dc7c2f BB |
3554 | DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); |
3555 | ||
3556 | if (zap_add(spa->spa_meta_objset, | |
3557 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
3558 | sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { | |
3559 | cmn_err(CE_PANIC, "failed to add pool config"); | |
3560 | } | |
3561 | ||
9ae529ec CS |
3562 | if (spa_version(spa) >= SPA_VERSION_FEATURES) |
3563 | spa_feature_create_zap_objects(spa, tx); | |
3564 | ||
428870ff BB |
3565 | if (zap_add(spa->spa_meta_objset, |
3566 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION, | |
3567 | sizeof (uint64_t), 1, &version, tx) != 0) { | |
3568 | cmn_err(CE_PANIC, "failed to add pool version"); | |
3569 | } | |
3570 | ||
34dc7c2f BB |
3571 | /* Newly created pools with the right version are always deflated. */ |
3572 | if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
3573 | spa->spa_deflate = TRUE; | |
3574 | if (zap_add(spa->spa_meta_objset, | |
3575 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
3576 | sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
3577 | cmn_err(CE_PANIC, "failed to add deflate"); | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | /* | |
428870ff | 3582 | * Create the deferred-free bpobj. Turn off compression |
34dc7c2f BB |
3583 | * because sync-to-convergence takes longer if the blocksize |
3584 | * keeps changing. | |
3585 | */ | |
428870ff BB |
3586 | obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx); |
3587 | dmu_object_set_compress(spa->spa_meta_objset, obj, | |
34dc7c2f | 3588 | ZIO_COMPRESS_OFF, tx); |
34dc7c2f | 3589 | if (zap_add(spa->spa_meta_objset, |
428870ff BB |
3590 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ, |
3591 | sizeof (uint64_t), 1, &obj, tx) != 0) { | |
3592 | cmn_err(CE_PANIC, "failed to add bpobj"); | |
34dc7c2f | 3593 | } |
428870ff BB |
3594 | VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj, |
3595 | spa->spa_meta_objset, obj)); | |
34dc7c2f BB |
3596 | |
3597 | /* | |
3598 | * Create the pool's history object. | |
3599 | */ | |
3600 | if (version >= SPA_VERSION_ZPOOL_HISTORY) | |
3601 | spa_history_create_obj(spa, tx); | |
3602 | ||
3603 | /* | |
3604 | * Set pool properties. | |
3605 | */ | |
3606 | spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
3607 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
3608 | spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); | |
9babb374 | 3609 | spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND); |
428870ff | 3610 | |
d164b209 BB |
3611 | if (props != NULL) { |
3612 | spa_configfile_set(spa, props, B_FALSE); | |
428870ff | 3613 | spa_sync_props(spa, props, tx); |
d164b209 | 3614 | } |
34dc7c2f BB |
3615 | |
3616 | dmu_tx_commit(tx); | |
3617 | ||
3618 | spa->spa_sync_on = B_TRUE; | |
3619 | txg_sync_start(spa->spa_dsl_pool); | |
3620 | ||
3621 | /* | |
3622 | * We explicitly wait for the first transaction to complete so that our | |
3623 | * bean counters are appropriately updated. | |
3624 | */ | |
3625 | txg_wait_synced(spa->spa_dsl_pool, txg); | |
3626 | ||
b128c09f | 3627 | spa_config_sync(spa, B_FALSE, B_TRUE); |
34dc7c2f | 3628 | |
6f1ffb06 | 3629 | spa_history_log_version(spa, "create"); |
34dc7c2f | 3630 | |
b128c09f BB |
3631 | spa->spa_minref = refcount_count(&spa->spa_refcount); |
3632 | ||
d164b209 BB |
3633 | mutex_exit(&spa_namespace_lock); |
3634 | ||
34dc7c2f BB |
3635 | return (0); |
3636 | } | |
3637 | ||
9babb374 | 3638 | #ifdef _KERNEL |
34dc7c2f | 3639 | /* |
9babb374 BB |
3640 | * Get the root pool information from the root disk, then import the root pool |
3641 | * during the system boot up time. | |
34dc7c2f | 3642 | */ |
9babb374 BB |
3643 | extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **); |
3644 | ||
3645 | static nvlist_t * | |
3646 | spa_generate_rootconf(char *devpath, char *devid, uint64_t *guid) | |
3647 | { | |
3648 | nvlist_t *config; | |
3649 | nvlist_t *nvtop, *nvroot; | |
3650 | uint64_t pgid; | |
3651 | ||
3652 | if (vdev_disk_read_rootlabel(devpath, devid, &config) != 0) | |
3653 | return (NULL); | |
3654 | ||
3655 | /* | |
3656 | * Add this top-level vdev to the child array. | |
3657 | */ | |
3658 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3659 | &nvtop) == 0); | |
3660 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
3661 | &pgid) == 0); | |
3662 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, guid) == 0); | |
3663 | ||
3664 | /* | |
3665 | * Put this pool's top-level vdevs into a root vdev. | |
3666 | */ | |
b8d06fca | 3667 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
9babb374 BB |
3668 | VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, |
3669 | VDEV_TYPE_ROOT) == 0); | |
3670 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); | |
3671 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); | |
3672 | VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, | |
3673 | &nvtop, 1) == 0); | |
3674 | ||
3675 | /* | |
3676 | * Replace the existing vdev_tree with the new root vdev in | |
3677 | * this pool's configuration (remove the old, add the new). | |
3678 | */ | |
3679 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); | |
3680 | nvlist_free(nvroot); | |
3681 | return (config); | |
3682 | } | |
3683 | ||
3684 | /* | |
3685 | * Walk the vdev tree and see if we can find a device with "better" | |
3686 | * configuration. A configuration is "better" if the label on that | |
3687 | * device has a more recent txg. | |
3688 | */ | |
3689 | static void | |
3690 | spa_alt_rootvdev(vdev_t *vd, vdev_t **avd, uint64_t *txg) | |
3691 | { | |
d6320ddb BB |
3692 | int c; |
3693 | ||
3694 | for (c = 0; c < vd->vdev_children; c++) | |
9babb374 BB |
3695 | spa_alt_rootvdev(vd->vdev_child[c], avd, txg); |
3696 | ||
3697 | if (vd->vdev_ops->vdev_op_leaf) { | |
3698 | nvlist_t *label; | |
3699 | uint64_t label_txg; | |
3700 | ||
3701 | if (vdev_disk_read_rootlabel(vd->vdev_physpath, vd->vdev_devid, | |
3702 | &label) != 0) | |
3703 | return; | |
3704 | ||
3705 | VERIFY(nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_TXG, | |
3706 | &label_txg) == 0); | |
3707 | ||
3708 | /* | |
3709 | * Do we have a better boot device? | |
3710 | */ | |
3711 | if (label_txg > *txg) { | |
3712 | *txg = label_txg; | |
3713 | *avd = vd; | |
3714 | } | |
3715 | nvlist_free(label); | |
3716 | } | |
3717 | } | |
3718 | ||
3719 | /* | |
3720 | * Import a root pool. | |
3721 | * | |
3722 | * For x86. devpath_list will consist of devid and/or physpath name of | |
3723 | * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a"). | |
3724 | * The GRUB "findroot" command will return the vdev we should boot. | |
3725 | * | |
3726 | * For Sparc, devpath_list consists the physpath name of the booting device | |
3727 | * no matter the rootpool is a single device pool or a mirrored pool. | |
3728 | * e.g. | |
3729 | * "/pci@1f,0/ide@d/disk@0,0:a" | |
3730 | */ | |
3731 | int | |
3732 | spa_import_rootpool(char *devpath, char *devid) | |
3733 | { | |
3734 | spa_t *spa; | |
3735 | vdev_t *rvd, *bvd, *avd = NULL; | |
3736 | nvlist_t *config, *nvtop; | |
3737 | uint64_t guid, txg; | |
3738 | char *pname; | |
3739 | int error; | |
3740 | ||
3741 | /* | |
3742 | * Read the label from the boot device and generate a configuration. | |
3743 | */ | |
428870ff BB |
3744 | config = spa_generate_rootconf(devpath, devid, &guid); |
3745 | #if defined(_OBP) && defined(_KERNEL) | |
3746 | if (config == NULL) { | |
3747 | if (strstr(devpath, "/iscsi/ssd") != NULL) { | |
3748 | /* iscsi boot */ | |
3749 | get_iscsi_bootpath_phy(devpath); | |
3750 | config = spa_generate_rootconf(devpath, devid, &guid); | |
3751 | } | |
3752 | } | |
3753 | #endif | |
3754 | if (config == NULL) { | |
9ae529ec | 3755 | cmn_err(CE_NOTE, "Cannot read the pool label from '%s'", |
9babb374 BB |
3756 | devpath); |
3757 | return (EIO); | |
3758 | } | |
3759 | ||
3760 | VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, | |
3761 | &pname) == 0); | |
3762 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0); | |
3763 | ||
3764 | mutex_enter(&spa_namespace_lock); | |
3765 | if ((spa = spa_lookup(pname)) != NULL) { | |
3766 | /* | |
3767 | * Remove the existing root pool from the namespace so that we | |
3768 | * can replace it with the correct config we just read in. | |
3769 | */ | |
3770 | spa_remove(spa); | |
3771 | } | |
3772 | ||
428870ff | 3773 | spa = spa_add(pname, config, NULL); |
9babb374 | 3774 | spa->spa_is_root = B_TRUE; |
572e2857 | 3775 | spa->spa_import_flags = ZFS_IMPORT_VERBATIM; |
9babb374 BB |
3776 | |
3777 | /* | |
3778 | * Build up a vdev tree based on the boot device's label config. | |
3779 | */ | |
3780 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3781 | &nvtop) == 0); | |
3782 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3783 | error = spa_config_parse(spa, &rvd, nvtop, NULL, 0, | |
3784 | VDEV_ALLOC_ROOTPOOL); | |
3785 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3786 | if (error) { | |
3787 | mutex_exit(&spa_namespace_lock); | |
3788 | nvlist_free(config); | |
3789 | cmn_err(CE_NOTE, "Can not parse the config for pool '%s'", | |
3790 | pname); | |
3791 | return (error); | |
3792 | } | |
3793 | ||
3794 | /* | |
3795 | * Get the boot vdev. | |
3796 | */ | |
3797 | if ((bvd = vdev_lookup_by_guid(rvd, guid)) == NULL) { | |
3798 | cmn_err(CE_NOTE, "Can not find the boot vdev for guid %llu", | |
3799 | (u_longlong_t)guid); | |
3800 | error = ENOENT; | |
3801 | goto out; | |
3802 | } | |
3803 | ||
3804 | /* | |
3805 | * Determine if there is a better boot device. | |
3806 | */ | |
3807 | avd = bvd; | |
3808 | spa_alt_rootvdev(rvd, &avd, &txg); | |
3809 | if (avd != bvd) { | |
3810 | cmn_err(CE_NOTE, "The boot device is 'degraded'. Please " | |
3811 | "try booting from '%s'", avd->vdev_path); | |
3812 | error = EINVAL; | |
3813 | goto out; | |
3814 | } | |
3815 | ||
3816 | /* | |
3817 | * If the boot device is part of a spare vdev then ensure that | |
3818 | * we're booting off the active spare. | |
3819 | */ | |
3820 | if (bvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3821 | !bvd->vdev_isspare) { | |
3822 | cmn_err(CE_NOTE, "The boot device is currently spared. Please " | |
3823 | "try booting from '%s'", | |
572e2857 BB |
3824 | bvd->vdev_parent-> |
3825 | vdev_child[bvd->vdev_parent->vdev_children - 1]->vdev_path); | |
9babb374 BB |
3826 | error = EINVAL; |
3827 | goto out; | |
3828 | } | |
3829 | ||
9babb374 BB |
3830 | error = 0; |
3831 | out: | |
3832 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3833 | vdev_free(rvd); | |
3834 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3835 | mutex_exit(&spa_namespace_lock); | |
3836 | ||
3837 | nvlist_free(config); | |
3838 | return (error); | |
3839 | } | |
3840 | ||
3841 | #endif | |
3842 | ||
9babb374 BB |
3843 | /* |
3844 | * Import a non-root pool into the system. | |
3845 | */ | |
3846 | int | |
572e2857 | 3847 | spa_import(const char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) |
34dc7c2f BB |
3848 | { |
3849 | spa_t *spa; | |
3850 | char *altroot = NULL; | |
428870ff BB |
3851 | spa_load_state_t state = SPA_LOAD_IMPORT; |
3852 | zpool_rewind_policy_t policy; | |
572e2857 BB |
3853 | uint64_t mode = spa_mode_global; |
3854 | uint64_t readonly = B_FALSE; | |
9babb374 | 3855 | int error; |
34dc7c2f BB |
3856 | nvlist_t *nvroot; |
3857 | nvlist_t **spares, **l2cache; | |
3858 | uint_t nspares, nl2cache; | |
34dc7c2f BB |
3859 | |
3860 | /* | |
3861 | * If a pool with this name exists, return failure. | |
3862 | */ | |
3863 | mutex_enter(&spa_namespace_lock); | |
428870ff | 3864 | if (spa_lookup(pool) != NULL) { |
9babb374 BB |
3865 | mutex_exit(&spa_namespace_lock); |
3866 | return (EEXIST); | |
34dc7c2f BB |
3867 | } |
3868 | ||
3869 | /* | |
3870 | * Create and initialize the spa structure. | |
3871 | */ | |
3872 | (void) nvlist_lookup_string(props, | |
3873 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
572e2857 BB |
3874 | (void) nvlist_lookup_uint64(props, |
3875 | zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly); | |
3876 | if (readonly) | |
3877 | mode = FREAD; | |
428870ff | 3878 | spa = spa_add(pool, config, altroot); |
572e2857 BB |
3879 | spa->spa_import_flags = flags; |
3880 | ||
3881 | /* | |
3882 | * Verbatim import - Take a pool and insert it into the namespace | |
3883 | * as if it had been loaded at boot. | |
3884 | */ | |
3885 | if (spa->spa_import_flags & ZFS_IMPORT_VERBATIM) { | |
3886 | if (props != NULL) | |
3887 | spa_configfile_set(spa, props, B_FALSE); | |
3888 | ||
3889 | spa_config_sync(spa, B_FALSE, B_TRUE); | |
3890 | ||
3891 | mutex_exit(&spa_namespace_lock); | |
6f1ffb06 | 3892 | spa_history_log_version(spa, "import"); |
572e2857 BB |
3893 | |
3894 | return (0); | |
3895 | } | |
3896 | ||
3897 | spa_activate(spa, mode); | |
34dc7c2f | 3898 | |
9babb374 BB |
3899 | /* |
3900 | * Don't start async tasks until we know everything is healthy. | |
3901 | */ | |
3902 | spa_async_suspend(spa); | |
b128c09f | 3903 | |
572e2857 BB |
3904 | zpool_get_rewind_policy(config, &policy); |
3905 | if (policy.zrp_request & ZPOOL_DO_REWIND) | |
3906 | state = SPA_LOAD_RECOVER; | |
3907 | ||
34dc7c2f | 3908 | /* |
9babb374 BB |
3909 | * Pass off the heavy lifting to spa_load(). Pass TRUE for mosconfig |
3910 | * because the user-supplied config is actually the one to trust when | |
b128c09f | 3911 | * doing an import. |
34dc7c2f | 3912 | */ |
428870ff BB |
3913 | if (state != SPA_LOAD_RECOVER) |
3914 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
572e2857 | 3915 | |
428870ff BB |
3916 | error = spa_load_best(spa, state, B_TRUE, policy.zrp_txg, |
3917 | policy.zrp_request); | |
3918 | ||
3919 | /* | |
572e2857 BB |
3920 | * Propagate anything learned while loading the pool and pass it |
3921 | * back to caller (i.e. rewind info, missing devices, etc). | |
428870ff | 3922 | */ |
572e2857 BB |
3923 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
3924 | spa->spa_load_info) == 0); | |
34dc7c2f | 3925 | |
b128c09f | 3926 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3927 | /* |
9babb374 BB |
3928 | * Toss any existing sparelist, as it doesn't have any validity |
3929 | * anymore, and conflicts with spa_has_spare(). | |
34dc7c2f | 3930 | */ |
9babb374 | 3931 | if (spa->spa_spares.sav_config) { |
34dc7c2f BB |
3932 | nvlist_free(spa->spa_spares.sav_config); |
3933 | spa->spa_spares.sav_config = NULL; | |
3934 | spa_load_spares(spa); | |
3935 | } | |
9babb374 | 3936 | if (spa->spa_l2cache.sav_config) { |
34dc7c2f BB |
3937 | nvlist_free(spa->spa_l2cache.sav_config); |
3938 | spa->spa_l2cache.sav_config = NULL; | |
3939 | spa_load_l2cache(spa); | |
3940 | } | |
3941 | ||
3942 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3943 | &nvroot) == 0); | |
3944 | if (error == 0) | |
9babb374 BB |
3945 | error = spa_validate_aux(spa, nvroot, -1ULL, |
3946 | VDEV_ALLOC_SPARE); | |
34dc7c2f BB |
3947 | if (error == 0) |
3948 | error = spa_validate_aux(spa, nvroot, -1ULL, | |
3949 | VDEV_ALLOC_L2CACHE); | |
b128c09f | 3950 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 3951 | |
d164b209 BB |
3952 | if (props != NULL) |
3953 | spa_configfile_set(spa, props, B_FALSE); | |
3954 | ||
fb5f0bc8 BB |
3955 | if (error != 0 || (props && spa_writeable(spa) && |
3956 | (error = spa_prop_set(spa, props)))) { | |
9babb374 BB |
3957 | spa_unload(spa); |
3958 | spa_deactivate(spa); | |
3959 | spa_remove(spa); | |
34dc7c2f BB |
3960 | mutex_exit(&spa_namespace_lock); |
3961 | return (error); | |
3962 | } | |
3963 | ||
572e2857 BB |
3964 | spa_async_resume(spa); |
3965 | ||
34dc7c2f BB |
3966 | /* |
3967 | * Override any spares and level 2 cache devices as specified by | |
3968 | * the user, as these may have correct device names/devids, etc. | |
3969 | */ | |
3970 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
3971 | &spares, &nspares) == 0) { | |
3972 | if (spa->spa_spares.sav_config) | |
3973 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
3974 | ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
3975 | else | |
3976 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, | |
b8d06fca | 3977 | NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3978 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
3979 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 3980 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3981 | spa_load_spares(spa); |
b128c09f | 3982 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3983 | spa->spa_spares.sav_sync = B_TRUE; |
3984 | } | |
3985 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
3986 | &l2cache, &nl2cache) == 0) { | |
3987 | if (spa->spa_l2cache.sav_config) | |
3988 | VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
3989 | ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
3990 | else | |
3991 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
b8d06fca | 3992 | NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
34dc7c2f BB |
3993 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, |
3994 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 3995 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3996 | spa_load_l2cache(spa); |
b128c09f | 3997 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3998 | spa->spa_l2cache.sav_sync = B_TRUE; |
3999 | } | |
4000 | ||
428870ff BB |
4001 | /* |
4002 | * Check for any removed devices. | |
4003 | */ | |
4004 | if (spa->spa_autoreplace) { | |
4005 | spa_aux_check_removed(&spa->spa_spares); | |
4006 | spa_aux_check_removed(&spa->spa_l2cache); | |
4007 | } | |
4008 | ||
fb5f0bc8 | 4009 | if (spa_writeable(spa)) { |
b128c09f BB |
4010 | /* |
4011 | * Update the config cache to include the newly-imported pool. | |
4012 | */ | |
45d1cae3 | 4013 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
b128c09f | 4014 | } |
34dc7c2f | 4015 | |
34dc7c2f | 4016 | /* |
9babb374 BB |
4017 | * It's possible that the pool was expanded while it was exported. |
4018 | * We kick off an async task to handle this for us. | |
34dc7c2f | 4019 | */ |
9babb374 | 4020 | spa_async_request(spa, SPA_ASYNC_AUTOEXPAND); |
b128c09f | 4021 | |
9babb374 | 4022 | mutex_exit(&spa_namespace_lock); |
6f1ffb06 | 4023 | spa_history_log_version(spa, "import"); |
b128c09f | 4024 | |
526af785 PJD |
4025 | #ifdef _KERNEL |
4026 | zvol_create_minors(pool); | |
4027 | #endif | |
4028 | ||
b128c09f BB |
4029 | return (0); |
4030 | } | |
4031 | ||
34dc7c2f BB |
4032 | nvlist_t * |
4033 | spa_tryimport(nvlist_t *tryconfig) | |
4034 | { | |
4035 | nvlist_t *config = NULL; | |
4036 | char *poolname; | |
4037 | spa_t *spa; | |
4038 | uint64_t state; | |
d164b209 | 4039 | int error; |
34dc7c2f BB |
4040 | |
4041 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
4042 | return (NULL); | |
4043 | ||
4044 | if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
4045 | return (NULL); | |
4046 | ||
4047 | /* | |
4048 | * Create and initialize the spa structure. | |
4049 | */ | |
4050 | mutex_enter(&spa_namespace_lock); | |
428870ff | 4051 | spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL); |
fb5f0bc8 | 4052 | spa_activate(spa, FREAD); |
34dc7c2f BB |
4053 | |
4054 | /* | |
4055 | * Pass off the heavy lifting to spa_load(). | |
4056 | * Pass TRUE for mosconfig because the user-supplied config | |
4057 | * is actually the one to trust when doing an import. | |
4058 | */ | |
428870ff | 4059 | error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING, B_TRUE); |
34dc7c2f BB |
4060 | |
4061 | /* | |
4062 | * If 'tryconfig' was at least parsable, return the current config. | |
4063 | */ | |
4064 | if (spa->spa_root_vdev != NULL) { | |
34dc7c2f | 4065 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
4066 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
4067 | poolname) == 0); | |
4068 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
4069 | state) == 0); | |
4070 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
4071 | spa->spa_uberblock.ub_timestamp) == 0); | |
9ae529ec CS |
4072 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
4073 | spa->spa_load_info) == 0); | |
34dc7c2f BB |
4074 | |
4075 | /* | |
4076 | * If the bootfs property exists on this pool then we | |
4077 | * copy it out so that external consumers can tell which | |
4078 | * pools are bootable. | |
4079 | */ | |
d164b209 | 4080 | if ((!error || error == EEXIST) && spa->spa_bootfs) { |
b8d06fca | 4081 | char *tmpname = kmem_alloc(MAXPATHLEN, KM_PUSHPAGE); |
34dc7c2f BB |
4082 | |
4083 | /* | |
4084 | * We have to play games with the name since the | |
4085 | * pool was opened as TRYIMPORT_NAME. | |
4086 | */ | |
b128c09f | 4087 | if (dsl_dsobj_to_dsname(spa_name(spa), |
34dc7c2f BB |
4088 | spa->spa_bootfs, tmpname) == 0) { |
4089 | char *cp; | |
b8d06fca | 4090 | char *dsname = kmem_alloc(MAXPATHLEN, KM_PUSHPAGE); |
34dc7c2f BB |
4091 | |
4092 | cp = strchr(tmpname, '/'); | |
4093 | if (cp == NULL) { | |
4094 | (void) strlcpy(dsname, tmpname, | |
4095 | MAXPATHLEN); | |
4096 | } else { | |
4097 | (void) snprintf(dsname, MAXPATHLEN, | |
4098 | "%s/%s", poolname, ++cp); | |
4099 | } | |
4100 | VERIFY(nvlist_add_string(config, | |
4101 | ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
4102 | kmem_free(dsname, MAXPATHLEN); | |
4103 | } | |
4104 | kmem_free(tmpname, MAXPATHLEN); | |
4105 | } | |
4106 | ||
4107 | /* | |
4108 | * Add the list of hot spares and level 2 cache devices. | |
4109 | */ | |
9babb374 | 4110 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
4111 | spa_add_spares(spa, config); |
4112 | spa_add_l2cache(spa, config); | |
9babb374 | 4113 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
4114 | } |
4115 | ||
4116 | spa_unload(spa); | |
4117 | spa_deactivate(spa); | |
4118 | spa_remove(spa); | |
4119 | mutex_exit(&spa_namespace_lock); | |
4120 | ||
4121 | return (config); | |
4122 | } | |
4123 | ||
4124 | /* | |
4125 | * Pool export/destroy | |
4126 | * | |
4127 | * The act of destroying or exporting a pool is very simple. We make sure there | |
4128 | * is no more pending I/O and any references to the pool are gone. Then, we | |
4129 | * update the pool state and sync all the labels to disk, removing the | |
fb5f0bc8 BB |
4130 | * configuration from the cache afterwards. If the 'hardforce' flag is set, then |
4131 | * we don't sync the labels or remove the configuration cache. | |
34dc7c2f BB |
4132 | */ |
4133 | static int | |
b128c09f | 4134 | spa_export_common(char *pool, int new_state, nvlist_t **oldconfig, |
fb5f0bc8 | 4135 | boolean_t force, boolean_t hardforce) |
34dc7c2f BB |
4136 | { |
4137 | spa_t *spa; | |
4138 | ||
4139 | if (oldconfig) | |
4140 | *oldconfig = NULL; | |
4141 | ||
fb5f0bc8 | 4142 | if (!(spa_mode_global & FWRITE)) |
34dc7c2f BB |
4143 | return (EROFS); |
4144 | ||
4145 | mutex_enter(&spa_namespace_lock); | |
4146 | if ((spa = spa_lookup(pool)) == NULL) { | |
4147 | mutex_exit(&spa_namespace_lock); | |
4148 | return (ENOENT); | |
4149 | } | |
4150 | ||
4151 | /* | |
4152 | * Put a hold on the pool, drop the namespace lock, stop async tasks, | |
4153 | * reacquire the namespace lock, and see if we can export. | |
4154 | */ | |
4155 | spa_open_ref(spa, FTAG); | |
4156 | mutex_exit(&spa_namespace_lock); | |
4157 | spa_async_suspend(spa); | |
4158 | mutex_enter(&spa_namespace_lock); | |
4159 | spa_close(spa, FTAG); | |
4160 | ||
4161 | /* | |
4162 | * The pool will be in core if it's openable, | |
4163 | * in which case we can modify its state. | |
4164 | */ | |
4165 | if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
4166 | /* | |
4167 | * Objsets may be open only because they're dirty, so we | |
4168 | * have to force it to sync before checking spa_refcnt. | |
4169 | */ | |
34dc7c2f BB |
4170 | txg_wait_synced(spa->spa_dsl_pool, 0); |
4171 | ||
4172 | /* | |
4173 | * A pool cannot be exported or destroyed if there are active | |
4174 | * references. If we are resetting a pool, allow references by | |
4175 | * fault injection handlers. | |
4176 | */ | |
4177 | if (!spa_refcount_zero(spa) || | |
4178 | (spa->spa_inject_ref != 0 && | |
4179 | new_state != POOL_STATE_UNINITIALIZED)) { | |
34dc7c2f BB |
4180 | spa_async_resume(spa); |
4181 | mutex_exit(&spa_namespace_lock); | |
4182 | return (EBUSY); | |
4183 | } | |
4184 | ||
b128c09f BB |
4185 | /* |
4186 | * A pool cannot be exported if it has an active shared spare. | |
4187 | * This is to prevent other pools stealing the active spare | |
4188 | * from an exported pool. At user's own will, such pool can | |
4189 | * be forcedly exported. | |
4190 | */ | |
4191 | if (!force && new_state == POOL_STATE_EXPORTED && | |
4192 | spa_has_active_shared_spare(spa)) { | |
4193 | spa_async_resume(spa); | |
4194 | mutex_exit(&spa_namespace_lock); | |
4195 | return (EXDEV); | |
4196 | } | |
34dc7c2f BB |
4197 | |
4198 | /* | |
4199 | * We want this to be reflected on every label, | |
4200 | * so mark them all dirty. spa_unload() will do the | |
4201 | * final sync that pushes these changes out. | |
4202 | */ | |
fb5f0bc8 | 4203 | if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { |
b128c09f | 4204 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 4205 | spa->spa_state = new_state; |
428870ff BB |
4206 | spa->spa_final_txg = spa_last_synced_txg(spa) + |
4207 | TXG_DEFER_SIZE + 1; | |
34dc7c2f | 4208 | vdev_config_dirty(spa->spa_root_vdev); |
b128c09f | 4209 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
4210 | } |
4211 | } | |
4212 | ||
26685276 | 4213 | spa_event_notify(spa, NULL, FM_EREPORT_ZFS_POOL_DESTROY); |
34dc7c2f BB |
4214 | |
4215 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
4216 | spa_unload(spa); | |
4217 | spa_deactivate(spa); | |
4218 | } | |
4219 | ||
4220 | if (oldconfig && spa->spa_config) | |
4221 | VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); | |
4222 | ||
4223 | if (new_state != POOL_STATE_UNINITIALIZED) { | |
fb5f0bc8 BB |
4224 | if (!hardforce) |
4225 | spa_config_sync(spa, B_TRUE, B_TRUE); | |
34dc7c2f | 4226 | spa_remove(spa); |
34dc7c2f BB |
4227 | } |
4228 | mutex_exit(&spa_namespace_lock); | |
4229 | ||
4230 | return (0); | |
4231 | } | |
4232 | ||
4233 | /* | |
4234 | * Destroy a storage pool. | |
4235 | */ | |
4236 | int | |
4237 | spa_destroy(char *pool) | |
4238 | { | |
fb5f0bc8 BB |
4239 | return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, |
4240 | B_FALSE, B_FALSE)); | |
34dc7c2f BB |
4241 | } |
4242 | ||
4243 | /* | |
4244 | * Export a storage pool. | |
4245 | */ | |
4246 | int | |
fb5f0bc8 BB |
4247 | spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
4248 | boolean_t hardforce) | |
34dc7c2f | 4249 | { |
fb5f0bc8 BB |
4250 | return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, |
4251 | force, hardforce)); | |
34dc7c2f BB |
4252 | } |
4253 | ||
4254 | /* | |
4255 | * Similar to spa_export(), this unloads the spa_t without actually removing it | |
4256 | * from the namespace in any way. | |
4257 | */ | |
4258 | int | |
4259 | spa_reset(char *pool) | |
4260 | { | |
b128c09f | 4261 | return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, |
fb5f0bc8 | 4262 | B_FALSE, B_FALSE)); |
34dc7c2f BB |
4263 | } |
4264 | ||
34dc7c2f BB |
4265 | /* |
4266 | * ========================================================================== | |
4267 | * Device manipulation | |
4268 | * ========================================================================== | |
4269 | */ | |
4270 | ||
4271 | /* | |
4272 | * Add a device to a storage pool. | |
4273 | */ | |
4274 | int | |
4275 | spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
4276 | { | |
428870ff | 4277 | uint64_t txg, id; |
fb5f0bc8 | 4278 | int error; |
34dc7c2f BB |
4279 | vdev_t *rvd = spa->spa_root_vdev; |
4280 | vdev_t *vd, *tvd; | |
4281 | nvlist_t **spares, **l2cache; | |
4282 | uint_t nspares, nl2cache; | |
d6320ddb | 4283 | int c; |
34dc7c2f | 4284 | |
572e2857 BB |
4285 | ASSERT(spa_writeable(spa)); |
4286 | ||
34dc7c2f BB |
4287 | txg = spa_vdev_enter(spa); |
4288 | ||
4289 | if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, | |
4290 | VDEV_ALLOC_ADD)) != 0) | |
4291 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4292 | ||
b128c09f | 4293 | spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ |
34dc7c2f BB |
4294 | |
4295 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, | |
4296 | &nspares) != 0) | |
4297 | nspares = 0; | |
4298 | ||
4299 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, | |
4300 | &nl2cache) != 0) | |
4301 | nl2cache = 0; | |
4302 | ||
b128c09f | 4303 | if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) |
34dc7c2f | 4304 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
34dc7c2f | 4305 | |
b128c09f BB |
4306 | if (vd->vdev_children != 0 && |
4307 | (error = vdev_create(vd, txg, B_FALSE)) != 0) | |
4308 | return (spa_vdev_exit(spa, vd, txg, error)); | |
34dc7c2f BB |
4309 | |
4310 | /* | |
4311 | * We must validate the spares and l2cache devices after checking the | |
4312 | * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
4313 | */ | |
b128c09f | 4314 | if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) |
34dc7c2f | 4315 | return (spa_vdev_exit(spa, vd, txg, error)); |
34dc7c2f BB |
4316 | |
4317 | /* | |
4318 | * Transfer each new top-level vdev from vd to rvd. | |
4319 | */ | |
d6320ddb | 4320 | for (c = 0; c < vd->vdev_children; c++) { |
428870ff BB |
4321 | |
4322 | /* | |
4323 | * Set the vdev id to the first hole, if one exists. | |
4324 | */ | |
4325 | for (id = 0; id < rvd->vdev_children; id++) { | |
4326 | if (rvd->vdev_child[id]->vdev_ishole) { | |
4327 | vdev_free(rvd->vdev_child[id]); | |
4328 | break; | |
4329 | } | |
4330 | } | |
34dc7c2f BB |
4331 | tvd = vd->vdev_child[c]; |
4332 | vdev_remove_child(vd, tvd); | |
428870ff | 4333 | tvd->vdev_id = id; |
34dc7c2f BB |
4334 | vdev_add_child(rvd, tvd); |
4335 | vdev_config_dirty(tvd); | |
4336 | } | |
4337 | ||
4338 | if (nspares != 0) { | |
4339 | spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, | |
4340 | ZPOOL_CONFIG_SPARES); | |
4341 | spa_load_spares(spa); | |
4342 | spa->spa_spares.sav_sync = B_TRUE; | |
4343 | } | |
4344 | ||
4345 | if (nl2cache != 0) { | |
4346 | spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
4347 | ZPOOL_CONFIG_L2CACHE); | |
4348 | spa_load_l2cache(spa); | |
4349 | spa->spa_l2cache.sav_sync = B_TRUE; | |
4350 | } | |
4351 | ||
4352 | /* | |
4353 | * We have to be careful when adding new vdevs to an existing pool. | |
4354 | * If other threads start allocating from these vdevs before we | |
4355 | * sync the config cache, and we lose power, then upon reboot we may | |
4356 | * fail to open the pool because there are DVAs that the config cache | |
4357 | * can't translate. Therefore, we first add the vdevs without | |
4358 | * initializing metaslabs; sync the config cache (via spa_vdev_exit()); | |
4359 | * and then let spa_config_update() initialize the new metaslabs. | |
4360 | * | |
4361 | * spa_load() checks for added-but-not-initialized vdevs, so that | |
4362 | * if we lose power at any point in this sequence, the remaining | |
4363 | * steps will be completed the next time we load the pool. | |
4364 | */ | |
4365 | (void) spa_vdev_exit(spa, vd, txg, 0); | |
4366 | ||
4367 | mutex_enter(&spa_namespace_lock); | |
4368 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
4369 | mutex_exit(&spa_namespace_lock); | |
4370 | ||
4371 | return (0); | |
4372 | } | |
4373 | ||
4374 | /* | |
4375 | * Attach a device to a mirror. The arguments are the path to any device | |
4376 | * in the mirror, and the nvroot for the new device. If the path specifies | |
4377 | * a device that is not mirrored, we automatically insert the mirror vdev. | |
4378 | * | |
4379 | * If 'replacing' is specified, the new device is intended to replace the | |
4380 | * existing device; in this case the two devices are made into their own | |
4381 | * mirror using the 'replacing' vdev, which is functionally identical to | |
4382 | * the mirror vdev (it actually reuses all the same ops) but has a few | |
4383 | * extra rules: you can't attach to it after it's been created, and upon | |
4384 | * completion of resilvering, the first disk (the one being replaced) | |
4385 | * is automatically detached. | |
4386 | */ | |
4387 | int | |
4388 | spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) | |
4389 | { | |
428870ff | 4390 | uint64_t txg, dtl_max_txg; |
1fde1e37 | 4391 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev;) |
34dc7c2f BB |
4392 | vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; |
4393 | vdev_ops_t *pvops; | |
b128c09f BB |
4394 | char *oldvdpath, *newvdpath; |
4395 | int newvd_isspare; | |
4396 | int error; | |
34dc7c2f | 4397 | |
572e2857 BB |
4398 | ASSERT(spa_writeable(spa)); |
4399 | ||
34dc7c2f BB |
4400 | txg = spa_vdev_enter(spa); |
4401 | ||
b128c09f | 4402 | oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
4403 | |
4404 | if (oldvd == NULL) | |
4405 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
4406 | ||
4407 | if (!oldvd->vdev_ops->vdev_op_leaf) | |
4408 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
4409 | ||
4410 | pvd = oldvd->vdev_parent; | |
4411 | ||
4412 | if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, | |
5ffb9d1d | 4413 | VDEV_ALLOC_ATTACH)) != 0) |
34dc7c2f BB |
4414 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); |
4415 | ||
4416 | if (newrootvd->vdev_children != 1) | |
4417 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
4418 | ||
4419 | newvd = newrootvd->vdev_child[0]; | |
4420 | ||
4421 | if (!newvd->vdev_ops->vdev_op_leaf) | |
4422 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
4423 | ||
4424 | if ((error = vdev_create(newrootvd, txg, replacing)) != 0) | |
4425 | return (spa_vdev_exit(spa, newrootvd, txg, error)); | |
4426 | ||
4427 | /* | |
4428 | * Spares can't replace logs | |
4429 | */ | |
b128c09f | 4430 | if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) |
34dc7c2f BB |
4431 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
4432 | ||
4433 | if (!replacing) { | |
4434 | /* | |
4435 | * For attach, the only allowable parent is a mirror or the root | |
4436 | * vdev. | |
4437 | */ | |
4438 | if (pvd->vdev_ops != &vdev_mirror_ops && | |
4439 | pvd->vdev_ops != &vdev_root_ops) | |
4440 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
4441 | ||
4442 | pvops = &vdev_mirror_ops; | |
4443 | } else { | |
4444 | /* | |
4445 | * Active hot spares can only be replaced by inactive hot | |
4446 | * spares. | |
4447 | */ | |
4448 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 | 4449 | oldvd->vdev_isspare && |
34dc7c2f BB |
4450 | !spa_has_spare(spa, newvd->vdev_guid)) |
4451 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
4452 | ||
4453 | /* | |
4454 | * If the source is a hot spare, and the parent isn't already a | |
4455 | * spare, then we want to create a new hot spare. Otherwise, we | |
4456 | * want to create a replacing vdev. The user is not allowed to | |
4457 | * attach to a spared vdev child unless the 'isspare' state is | |
4458 | * the same (spare replaces spare, non-spare replaces | |
4459 | * non-spare). | |
4460 | */ | |
572e2857 BB |
4461 | if (pvd->vdev_ops == &vdev_replacing_ops && |
4462 | spa_version(spa) < SPA_VERSION_MULTI_REPLACE) { | |
34dc7c2f | 4463 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
4464 | } else if (pvd->vdev_ops == &vdev_spare_ops && |
4465 | newvd->vdev_isspare != oldvd->vdev_isspare) { | |
34dc7c2f | 4466 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
572e2857 BB |
4467 | } |
4468 | ||
4469 | if (newvd->vdev_isspare) | |
34dc7c2f BB |
4470 | pvops = &vdev_spare_ops; |
4471 | else | |
4472 | pvops = &vdev_replacing_ops; | |
4473 | } | |
4474 | ||
4475 | /* | |
9babb374 | 4476 | * Make sure the new device is big enough. |
34dc7c2f | 4477 | */ |
9babb374 | 4478 | if (newvd->vdev_asize < vdev_get_min_asize(oldvd)) |
34dc7c2f BB |
4479 | return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
4480 | ||
4481 | /* | |
4482 | * The new device cannot have a higher alignment requirement | |
4483 | * than the top-level vdev. | |
4484 | */ | |
4485 | if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
4486 | return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); | |
4487 | ||
4488 | /* | |
4489 | * If this is an in-place replacement, update oldvd's path and devid | |
4490 | * to make it distinguishable from newvd, and unopenable from now on. | |
4491 | */ | |
4492 | if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
4493 | spa_strfree(oldvd->vdev_path); | |
4494 | oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
b8d06fca | 4495 | KM_PUSHPAGE); |
34dc7c2f BB |
4496 | (void) sprintf(oldvd->vdev_path, "%s/%s", |
4497 | newvd->vdev_path, "old"); | |
4498 | if (oldvd->vdev_devid != NULL) { | |
4499 | spa_strfree(oldvd->vdev_devid); | |
4500 | oldvd->vdev_devid = NULL; | |
4501 | } | |
4502 | } | |
4503 | ||
572e2857 BB |
4504 | /* mark the device being resilvered */ |
4505 | newvd->vdev_resilvering = B_TRUE; | |
4506 | ||
34dc7c2f BB |
4507 | /* |
4508 | * If the parent is not a mirror, or if we're replacing, insert the new | |
4509 | * mirror/replacing/spare vdev above oldvd. | |
4510 | */ | |
4511 | if (pvd->vdev_ops != pvops) | |
4512 | pvd = vdev_add_parent(oldvd, pvops); | |
4513 | ||
4514 | ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
4515 | ASSERT(pvd->vdev_ops == pvops); | |
4516 | ASSERT(oldvd->vdev_parent == pvd); | |
4517 | ||
4518 | /* | |
4519 | * Extract the new device from its root and add it to pvd. | |
4520 | */ | |
4521 | vdev_remove_child(newrootvd, newvd); | |
4522 | newvd->vdev_id = pvd->vdev_children; | |
428870ff | 4523 | newvd->vdev_crtxg = oldvd->vdev_crtxg; |
34dc7c2f BB |
4524 | vdev_add_child(pvd, newvd); |
4525 | ||
34dc7c2f BB |
4526 | tvd = newvd->vdev_top; |
4527 | ASSERT(pvd->vdev_top == tvd); | |
4528 | ASSERT(tvd->vdev_parent == rvd); | |
4529 | ||
4530 | vdev_config_dirty(tvd); | |
4531 | ||
4532 | /* | |
428870ff BB |
4533 | * Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account |
4534 | * for any dmu_sync-ed blocks. It will propagate upward when | |
4535 | * spa_vdev_exit() calls vdev_dtl_reassess(). | |
34dc7c2f | 4536 | */ |
428870ff | 4537 | dtl_max_txg = txg + TXG_CONCURRENT_STATES; |
34dc7c2f | 4538 | |
428870ff BB |
4539 | vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL, |
4540 | dtl_max_txg - TXG_INITIAL); | |
34dc7c2f | 4541 | |
9babb374 | 4542 | if (newvd->vdev_isspare) { |
34dc7c2f | 4543 | spa_spare_activate(newvd); |
26685276 | 4544 | spa_event_notify(spa, newvd, FM_EREPORT_ZFS_DEVICE_SPARE); |
9babb374 BB |
4545 | } |
4546 | ||
b128c09f BB |
4547 | oldvdpath = spa_strdup(oldvd->vdev_path); |
4548 | newvdpath = spa_strdup(newvd->vdev_path); | |
4549 | newvd_isspare = newvd->vdev_isspare; | |
34dc7c2f BB |
4550 | |
4551 | /* | |
4552 | * Mark newvd's DTL dirty in this txg. | |
4553 | */ | |
4554 | vdev_dirty(tvd, VDD_DTL, newvd, txg); | |
4555 | ||
428870ff BB |
4556 | /* |
4557 | * Restart the resilver | |
4558 | */ | |
4559 | dsl_resilver_restart(spa->spa_dsl_pool, dtl_max_txg); | |
4560 | ||
4561 | /* | |
4562 | * Commit the config | |
4563 | */ | |
4564 | (void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0); | |
34dc7c2f | 4565 | |
6f1ffb06 | 4566 | spa_history_log_internal(spa, "vdev attach", NULL, |
428870ff | 4567 | "%s vdev=%s %s vdev=%s", |
45d1cae3 BB |
4568 | replacing && newvd_isspare ? "spare in" : |
4569 | replacing ? "replace" : "attach", newvdpath, | |
4570 | replacing ? "for" : "to", oldvdpath); | |
b128c09f BB |
4571 | |
4572 | spa_strfree(oldvdpath); | |
4573 | spa_strfree(newvdpath); | |
4574 | ||
572e2857 | 4575 | if (spa->spa_bootfs) |
26685276 | 4576 | spa_event_notify(spa, newvd, FM_EREPORT_ZFS_BOOTFS_VDEV_ATTACH); |
572e2857 | 4577 | |
34dc7c2f BB |
4578 | return (0); |
4579 | } | |
4580 | ||
4581 | /* | |
4582 | * Detach a device from a mirror or replacing vdev. | |
4583 | * If 'replace_done' is specified, only detach if the parent | |
4584 | * is a replacing vdev. | |
4585 | */ | |
4586 | int | |
fb5f0bc8 | 4587 | spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) |
34dc7c2f BB |
4588 | { |
4589 | uint64_t txg; | |
fb5f0bc8 | 4590 | int error; |
1fde1e37 | 4591 | ASSERTV(vdev_t *rvd = spa->spa_root_vdev;) |
34dc7c2f BB |
4592 | vdev_t *vd, *pvd, *cvd, *tvd; |
4593 | boolean_t unspare = B_FALSE; | |
d4ed6673 | 4594 | uint64_t unspare_guid = 0; |
428870ff | 4595 | char *vdpath; |
d6320ddb | 4596 | int c, t; |
34dc7c2f | 4597 | |
572e2857 BB |
4598 | ASSERT(spa_writeable(spa)); |
4599 | ||
34dc7c2f BB |
4600 | txg = spa_vdev_enter(spa); |
4601 | ||
b128c09f | 4602 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
4603 | |
4604 | if (vd == NULL) | |
4605 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
4606 | ||
4607 | if (!vd->vdev_ops->vdev_op_leaf) | |
4608 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
4609 | ||
4610 | pvd = vd->vdev_parent; | |
4611 | ||
fb5f0bc8 BB |
4612 | /* |
4613 | * If the parent/child relationship is not as expected, don't do it. | |
4614 | * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing | |
4615 | * vdev that's replacing B with C. The user's intent in replacing | |
4616 | * is to go from M(A,B) to M(A,C). If the user decides to cancel | |
4617 | * the replace by detaching C, the expected behavior is to end up | |
4618 | * M(A,B). But suppose that right after deciding to detach C, | |
4619 | * the replacement of B completes. We would have M(A,C), and then | |
4620 | * ask to detach C, which would leave us with just A -- not what | |
4621 | * the user wanted. To prevent this, we make sure that the | |
4622 | * parent/child relationship hasn't changed -- in this example, | |
4623 | * that C's parent is still the replacing vdev R. | |
4624 | */ | |
4625 | if (pvd->vdev_guid != pguid && pguid != 0) | |
4626 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
4627 | ||
34dc7c2f | 4628 | /* |
572e2857 | 4629 | * Only 'replacing' or 'spare' vdevs can be replaced. |
34dc7c2f | 4630 | */ |
572e2857 BB |
4631 | if (replace_done && pvd->vdev_ops != &vdev_replacing_ops && |
4632 | pvd->vdev_ops != &vdev_spare_ops) | |
4633 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
34dc7c2f BB |
4634 | |
4635 | ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
4636 | spa_version(spa) >= SPA_VERSION_SPARES); | |
4637 | ||
4638 | /* | |
4639 | * Only mirror, replacing, and spare vdevs support detach. | |
4640 | */ | |
4641 | if (pvd->vdev_ops != &vdev_replacing_ops && | |
4642 | pvd->vdev_ops != &vdev_mirror_ops && | |
4643 | pvd->vdev_ops != &vdev_spare_ops) | |
4644 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
4645 | ||
4646 | /* | |
fb5f0bc8 BB |
4647 | * If this device has the only valid copy of some data, |
4648 | * we cannot safely detach it. | |
34dc7c2f | 4649 | */ |
fb5f0bc8 | 4650 | if (vdev_dtl_required(vd)) |
34dc7c2f BB |
4651 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
4652 | ||
fb5f0bc8 | 4653 | ASSERT(pvd->vdev_children >= 2); |
34dc7c2f | 4654 | |
b128c09f BB |
4655 | /* |
4656 | * If we are detaching the second disk from a replacing vdev, then | |
4657 | * check to see if we changed the original vdev's path to have "/old" | |
4658 | * at the end in spa_vdev_attach(). If so, undo that change now. | |
4659 | */ | |
572e2857 BB |
4660 | if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id > 0 && |
4661 | vd->vdev_path != NULL) { | |
4662 | size_t len = strlen(vd->vdev_path); | |
4663 | ||
d6320ddb | 4664 | for (c = 0; c < pvd->vdev_children; c++) { |
572e2857 BB |
4665 | cvd = pvd->vdev_child[c]; |
4666 | ||
4667 | if (cvd == vd || cvd->vdev_path == NULL) | |
4668 | continue; | |
4669 | ||
4670 | if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && | |
4671 | strcmp(cvd->vdev_path + len, "/old") == 0) { | |
4672 | spa_strfree(cvd->vdev_path); | |
4673 | cvd->vdev_path = spa_strdup(vd->vdev_path); | |
4674 | break; | |
4675 | } | |
b128c09f BB |
4676 | } |
4677 | } | |
4678 | ||
34dc7c2f BB |
4679 | /* |
4680 | * If we are detaching the original disk from a spare, then it implies | |
4681 | * that the spare should become a real disk, and be removed from the | |
4682 | * active spare list for the pool. | |
4683 | */ | |
4684 | if (pvd->vdev_ops == &vdev_spare_ops && | |
572e2857 BB |
4685 | vd->vdev_id == 0 && |
4686 | pvd->vdev_child[pvd->vdev_children - 1]->vdev_isspare) | |
34dc7c2f BB |
4687 | unspare = B_TRUE; |
4688 | ||
4689 | /* | |
4690 | * Erase the disk labels so the disk can be used for other things. | |
4691 | * This must be done after all other error cases are handled, | |
4692 | * but before we disembowel vd (so we can still do I/O to it). | |
4693 | * But if we can't do it, don't treat the error as fatal -- | |
4694 | * it may be that the unwritability of the disk is the reason | |
4695 | * it's being detached! | |
4696 | */ | |
4697 | error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
4698 | ||
4699 | /* | |
4700 | * Remove vd from its parent and compact the parent's children. | |
4701 | */ | |
4702 | vdev_remove_child(pvd, vd); | |
4703 | vdev_compact_children(pvd); | |
4704 | ||
4705 | /* | |
4706 | * Remember one of the remaining children so we can get tvd below. | |
4707 | */ | |
572e2857 | 4708 | cvd = pvd->vdev_child[pvd->vdev_children - 1]; |
34dc7c2f BB |
4709 | |
4710 | /* | |
4711 | * If we need to remove the remaining child from the list of hot spares, | |
fb5f0bc8 BB |
4712 | * do it now, marking the vdev as no longer a spare in the process. |
4713 | * We must do this before vdev_remove_parent(), because that can | |
4714 | * change the GUID if it creates a new toplevel GUID. For a similar | |
4715 | * reason, we must remove the spare now, in the same txg as the detach; | |
4716 | * otherwise someone could attach a new sibling, change the GUID, and | |
4717 | * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. | |
34dc7c2f BB |
4718 | */ |
4719 | if (unspare) { | |
4720 | ASSERT(cvd->vdev_isspare); | |
4721 | spa_spare_remove(cvd); | |
4722 | unspare_guid = cvd->vdev_guid; | |
fb5f0bc8 | 4723 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
572e2857 | 4724 | cvd->vdev_unspare = B_TRUE; |
34dc7c2f BB |
4725 | } |
4726 | ||
428870ff BB |
4727 | /* |
4728 | * If the parent mirror/replacing vdev only has one child, | |
4729 | * the parent is no longer needed. Remove it from the tree. | |
4730 | */ | |
572e2857 BB |
4731 | if (pvd->vdev_children == 1) { |
4732 | if (pvd->vdev_ops == &vdev_spare_ops) | |
4733 | cvd->vdev_unspare = B_FALSE; | |
428870ff | 4734 | vdev_remove_parent(cvd); |
572e2857 BB |
4735 | cvd->vdev_resilvering = B_FALSE; |
4736 | } | |
4737 | ||
428870ff BB |
4738 | |
4739 | /* | |
4740 | * We don't set tvd until now because the parent we just removed | |
4741 | * may have been the previous top-level vdev. | |
4742 | */ | |
4743 | tvd = cvd->vdev_top; | |
4744 | ASSERT(tvd->vdev_parent == rvd); | |
4745 | ||
4746 | /* | |
4747 | * Reevaluate the parent vdev state. | |
4748 | */ | |
4749 | vdev_propagate_state(cvd); | |
4750 | ||
4751 | /* | |
4752 | * If the 'autoexpand' property is set on the pool then automatically | |
4753 | * try to expand the size of the pool. For example if the device we | |
4754 | * just detached was smaller than the others, it may be possible to | |
4755 | * add metaslabs (i.e. grow the pool). We need to reopen the vdev | |
4756 | * first so that we can obtain the updated sizes of the leaf vdevs. | |
4757 | */ | |
4758 | if (spa->spa_autoexpand) { | |
4759 | vdev_reopen(tvd); | |
4760 | vdev_expand(tvd, txg); | |
4761 | } | |
4762 | ||
4763 | vdev_config_dirty(tvd); | |
4764 | ||
4765 | /* | |
4766 | * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that | |
4767 | * vd->vdev_detached is set and free vd's DTL object in syncing context. | |
4768 | * But first make sure we're not on any *other* txg's DTL list, to | |
4769 | * prevent vd from being accessed after it's freed. | |
4770 | */ | |
4771 | vdpath = spa_strdup(vd->vdev_path); | |
d6320ddb | 4772 | for (t = 0; t < TXG_SIZE; t++) |
428870ff BB |
4773 | (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); |
4774 | vd->vdev_detached = B_TRUE; | |
4775 | vdev_dirty(tvd, VDD_DTL, vd, txg); | |
4776 | ||
26685276 | 4777 | spa_event_notify(spa, vd, FM_EREPORT_ZFS_DEVICE_REMOVE); |
428870ff | 4778 | |
572e2857 BB |
4779 | /* hang on to the spa before we release the lock */ |
4780 | spa_open_ref(spa, FTAG); | |
4781 | ||
428870ff BB |
4782 | error = spa_vdev_exit(spa, vd, txg, 0); |
4783 | ||
6f1ffb06 | 4784 | spa_history_log_internal(spa, "detach", NULL, |
428870ff BB |
4785 | "vdev=%s", vdpath); |
4786 | spa_strfree(vdpath); | |
4787 | ||
4788 | /* | |
4789 | * If this was the removal of the original device in a hot spare vdev, | |
4790 | * then we want to go through and remove the device from the hot spare | |
4791 | * list of every other pool. | |
4792 | */ | |
4793 | if (unspare) { | |
572e2857 BB |
4794 | spa_t *altspa = NULL; |
4795 | ||
428870ff | 4796 | mutex_enter(&spa_namespace_lock); |
572e2857 BB |
4797 | while ((altspa = spa_next(altspa)) != NULL) { |
4798 | if (altspa->spa_state != POOL_STATE_ACTIVE || | |
4799 | altspa == spa) | |
428870ff | 4800 | continue; |
572e2857 BB |
4801 | |
4802 | spa_open_ref(altspa, FTAG); | |
428870ff | 4803 | mutex_exit(&spa_namespace_lock); |
572e2857 | 4804 | (void) spa_vdev_remove(altspa, unspare_guid, B_TRUE); |
428870ff | 4805 | mutex_enter(&spa_namespace_lock); |
572e2857 | 4806 | spa_close(altspa, FTAG); |
428870ff BB |
4807 | } |
4808 | mutex_exit(&spa_namespace_lock); | |
572e2857 BB |
4809 | |
4810 | /* search the rest of the vdevs for spares to remove */ | |
4811 | spa_vdev_resilver_done(spa); | |
428870ff BB |
4812 | } |
4813 | ||
572e2857 BB |
4814 | /* all done with the spa; OK to release */ |
4815 | mutex_enter(&spa_namespace_lock); | |
4816 | spa_close(spa, FTAG); | |
4817 | mutex_exit(&spa_namespace_lock); | |
4818 | ||
428870ff BB |
4819 | return (error); |
4820 | } | |
4821 | ||
4822 | /* | |
4823 | * Split a set of devices from their mirrors, and create a new pool from them. | |
4824 | */ | |
4825 | int | |
4826 | spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, | |
4827 | nvlist_t *props, boolean_t exp) | |
4828 | { | |
4829 | int error = 0; | |
4830 | uint64_t txg, *glist; | |
4831 | spa_t *newspa; | |
4832 | uint_t c, children, lastlog; | |
4833 | nvlist_t **child, *nvl, *tmp; | |
4834 | dmu_tx_t *tx; | |
4835 | char *altroot = NULL; | |
4836 | vdev_t *rvd, **vml = NULL; /* vdev modify list */ | |
4837 | boolean_t activate_slog; | |
4838 | ||
572e2857 | 4839 | ASSERT(spa_writeable(spa)); |
428870ff BB |
4840 | |
4841 | txg = spa_vdev_enter(spa); | |
4842 | ||
4843 | /* clear the log and flush everything up to now */ | |
4844 | activate_slog = spa_passivate_log(spa); | |
4845 | (void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
4846 | error = spa_offline_log(spa); | |
4847 | txg = spa_vdev_config_enter(spa); | |
4848 | ||
4849 | if (activate_slog) | |
4850 | spa_activate_log(spa); | |
4851 | ||
4852 | if (error != 0) | |
4853 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4854 | ||
4855 | /* check new spa name before going any further */ | |
4856 | if (spa_lookup(newname) != NULL) | |
4857 | return (spa_vdev_exit(spa, NULL, txg, EEXIST)); | |
4858 | ||
4859 | /* | |
4860 | * scan through all the children to ensure they're all mirrors | |
4861 | */ | |
4862 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 || | |
4863 | nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child, | |
4864 | &children) != 0) | |
4865 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
4866 | ||
4867 | /* first, check to ensure we've got the right child count */ | |
4868 | rvd = spa->spa_root_vdev; | |
4869 | lastlog = 0; | |
4870 | for (c = 0; c < rvd->vdev_children; c++) { | |
4871 | vdev_t *vd = rvd->vdev_child[c]; | |
4872 | ||
4873 | /* don't count the holes & logs as children */ | |
4874 | if (vd->vdev_islog || vd->vdev_ishole) { | |
4875 | if (lastlog == 0) | |
4876 | lastlog = c; | |
4877 | continue; | |
4878 | } | |
4879 | ||
4880 | lastlog = 0; | |
4881 | } | |
4882 | if (children != (lastlog != 0 ? lastlog : rvd->vdev_children)) | |
4883 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
4884 | ||
4885 | /* next, ensure no spare or cache devices are part of the split */ | |
4886 | if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 || | |
4887 | nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0) | |
4888 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
4889 | ||
b8d06fca RY |
4890 | vml = kmem_zalloc(children * sizeof (vdev_t *), KM_PUSHPAGE); |
4891 | glist = kmem_zalloc(children * sizeof (uint64_t), KM_PUSHPAGE); | |
428870ff BB |
4892 | |
4893 | /* then, loop over each vdev and validate it */ | |
4894 | for (c = 0; c < children; c++) { | |
4895 | uint64_t is_hole = 0; | |
4896 | ||
4897 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, | |
4898 | &is_hole); | |
4899 | ||
4900 | if (is_hole != 0) { | |
4901 | if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole || | |
4902 | spa->spa_root_vdev->vdev_child[c]->vdev_islog) { | |
4903 | continue; | |
4904 | } else { | |
4905 | error = EINVAL; | |
4906 | break; | |
4907 | } | |
4908 | } | |
4909 | ||
4910 | /* which disk is going to be split? */ | |
4911 | if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID, | |
4912 | &glist[c]) != 0) { | |
4913 | error = EINVAL; | |
4914 | break; | |
4915 | } | |
4916 | ||
4917 | /* look it up in the spa */ | |
4918 | vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE); | |
4919 | if (vml[c] == NULL) { | |
4920 | error = ENODEV; | |
4921 | break; | |
4922 | } | |
4923 | ||
4924 | /* make sure there's nothing stopping the split */ | |
4925 | if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops || | |
4926 | vml[c]->vdev_islog || | |
4927 | vml[c]->vdev_ishole || | |
4928 | vml[c]->vdev_isspare || | |
4929 | vml[c]->vdev_isl2cache || | |
4930 | !vdev_writeable(vml[c]) || | |
4931 | vml[c]->vdev_children != 0 || | |
4932 | vml[c]->vdev_state != VDEV_STATE_HEALTHY || | |
4933 | c != spa->spa_root_vdev->vdev_child[c]->vdev_id) { | |
4934 | error = EINVAL; | |
4935 | break; | |
4936 | } | |
4937 | ||
4938 | if (vdev_dtl_required(vml[c])) { | |
4939 | error = EBUSY; | |
4940 | break; | |
4941 | } | |
4942 | ||
4943 | /* we need certain info from the top level */ | |
4944 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY, | |
4945 | vml[c]->vdev_top->vdev_ms_array) == 0); | |
4946 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT, | |
4947 | vml[c]->vdev_top->vdev_ms_shift) == 0); | |
4948 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE, | |
4949 | vml[c]->vdev_top->vdev_asize) == 0); | |
4950 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT, | |
4951 | vml[c]->vdev_top->vdev_ashift) == 0); | |
4952 | } | |
4953 | ||
4954 | if (error != 0) { | |
4955 | kmem_free(vml, children * sizeof (vdev_t *)); | |
4956 | kmem_free(glist, children * sizeof (uint64_t)); | |
4957 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4958 | } | |
4959 | ||
4960 | /* stop writers from using the disks */ | |
4961 | for (c = 0; c < children; c++) { | |
4962 | if (vml[c] != NULL) | |
4963 | vml[c]->vdev_offline = B_TRUE; | |
4964 | } | |
4965 | vdev_reopen(spa->spa_root_vdev); | |
34dc7c2f BB |
4966 | |
4967 | /* | |
428870ff BB |
4968 | * Temporarily record the splitting vdevs in the spa config. This |
4969 | * will disappear once the config is regenerated. | |
34dc7c2f | 4970 | */ |
b8d06fca | 4971 | VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
428870ff BB |
4972 | VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, |
4973 | glist, children) == 0); | |
4974 | kmem_free(glist, children * sizeof (uint64_t)); | |
34dc7c2f | 4975 | |
428870ff BB |
4976 | mutex_enter(&spa->spa_props_lock); |
4977 | VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT, | |
4978 | nvl) == 0); | |
4979 | mutex_exit(&spa->spa_props_lock); | |
4980 | spa->spa_config_splitting = nvl; | |
4981 | vdev_config_dirty(spa->spa_root_vdev); | |
4982 | ||
4983 | /* configure and create the new pool */ | |
4984 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0); | |
4985 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
4986 | exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0); | |
4987 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
4988 | spa_version(spa)) == 0); | |
4989 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
4990 | spa->spa_config_txg) == 0); | |
4991 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
4992 | spa_generate_guid(NULL)) == 0); | |
4993 | (void) nvlist_lookup_string(props, | |
4994 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
34dc7c2f | 4995 | |
428870ff BB |
4996 | /* add the new pool to the namespace */ |
4997 | newspa = spa_add(newname, config, altroot); | |
4998 | newspa->spa_config_txg = spa->spa_config_txg; | |
4999 | spa_set_log_state(newspa, SPA_LOG_CLEAR); | |
5000 | ||
5001 | /* release the spa config lock, retaining the namespace lock */ | |
5002 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
5003 | ||
5004 | if (zio_injection_enabled) | |
5005 | zio_handle_panic_injection(spa, FTAG, 1); | |
5006 | ||
5007 | spa_activate(newspa, spa_mode_global); | |
5008 | spa_async_suspend(newspa); | |
5009 | ||
5010 | /* create the new pool from the disks of the original pool */ | |
5011 | error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE, B_TRUE); | |
5012 | if (error) | |
5013 | goto out; | |
5014 | ||
5015 | /* if that worked, generate a real config for the new pool */ | |
5016 | if (newspa->spa_root_vdev != NULL) { | |
5017 | VERIFY(nvlist_alloc(&newspa->spa_config_splitting, | |
b8d06fca | 5018 | NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
428870ff BB |
5019 | VERIFY(nvlist_add_uint64(newspa->spa_config_splitting, |
5020 | ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0); | |
5021 | spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL, | |
5022 | B_TRUE)); | |
9babb374 | 5023 | } |
34dc7c2f | 5024 | |
428870ff BB |
5025 | /* set the props */ |
5026 | if (props != NULL) { | |
5027 | spa_configfile_set(newspa, props, B_FALSE); | |
5028 | error = spa_prop_set(newspa, props); | |
5029 | if (error) | |
5030 | goto out; | |
5031 | } | |
34dc7c2f | 5032 | |
428870ff BB |
5033 | /* flush everything */ |
5034 | txg = spa_vdev_config_enter(newspa); | |
5035 | vdev_config_dirty(newspa->spa_root_vdev); | |
5036 | (void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG); | |
34dc7c2f | 5037 | |
428870ff BB |
5038 | if (zio_injection_enabled) |
5039 | zio_handle_panic_injection(spa, FTAG, 2); | |
34dc7c2f | 5040 | |
428870ff | 5041 | spa_async_resume(newspa); |
34dc7c2f | 5042 | |
428870ff BB |
5043 | /* finally, update the original pool's config */ |
5044 | txg = spa_vdev_config_enter(spa); | |
5045 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
5046 | error = dmu_tx_assign(tx, TXG_WAIT); | |
5047 | if (error != 0) | |
5048 | dmu_tx_abort(tx); | |
5049 | for (c = 0; c < children; c++) { | |
5050 | if (vml[c] != NULL) { | |
5051 | vdev_split(vml[c]); | |
5052 | if (error == 0) | |
6f1ffb06 MA |
5053 | spa_history_log_internal(spa, "detach", tx, |
5054 | "vdev=%s", vml[c]->vdev_path); | |
428870ff | 5055 | vdev_free(vml[c]); |
34dc7c2f | 5056 | } |
34dc7c2f | 5057 | } |
428870ff BB |
5058 | vdev_config_dirty(spa->spa_root_vdev); |
5059 | spa->spa_config_splitting = NULL; | |
5060 | nvlist_free(nvl); | |
5061 | if (error == 0) | |
5062 | dmu_tx_commit(tx); | |
5063 | (void) spa_vdev_exit(spa, NULL, txg, 0); | |
5064 | ||
5065 | if (zio_injection_enabled) | |
5066 | zio_handle_panic_injection(spa, FTAG, 3); | |
5067 | ||
5068 | /* split is complete; log a history record */ | |
6f1ffb06 MA |
5069 | spa_history_log_internal(newspa, "split", NULL, |
5070 | "from pool %s", spa_name(spa)); | |
428870ff BB |
5071 | |
5072 | kmem_free(vml, children * sizeof (vdev_t *)); | |
5073 | ||
5074 | /* if we're not going to mount the filesystems in userland, export */ | |
5075 | if (exp) | |
5076 | error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL, | |
5077 | B_FALSE, B_FALSE); | |
5078 | ||
5079 | return (error); | |
5080 | ||
5081 | out: | |
5082 | spa_unload(newspa); | |
5083 | spa_deactivate(newspa); | |
5084 | spa_remove(newspa); | |
5085 | ||
5086 | txg = spa_vdev_config_enter(spa); | |
5087 | ||
5088 | /* re-online all offlined disks */ | |
5089 | for (c = 0; c < children; c++) { | |
5090 | if (vml[c] != NULL) | |
5091 | vml[c]->vdev_offline = B_FALSE; | |
5092 | } | |
5093 | vdev_reopen(spa->spa_root_vdev); | |
5094 | ||
5095 | nvlist_free(spa->spa_config_splitting); | |
5096 | spa->spa_config_splitting = NULL; | |
5097 | (void) spa_vdev_exit(spa, NULL, txg, error); | |
34dc7c2f | 5098 | |
428870ff | 5099 | kmem_free(vml, children * sizeof (vdev_t *)); |
34dc7c2f BB |
5100 | return (error); |
5101 | } | |
5102 | ||
b128c09f BB |
5103 | static nvlist_t * |
5104 | spa_nvlist_lookup_by_guid(nvlist_t **nvpp, int count, uint64_t target_guid) | |
34dc7c2f | 5105 | { |
d6320ddb BB |
5106 | int i; |
5107 | ||
5108 | for (i = 0; i < count; i++) { | |
b128c09f | 5109 | uint64_t guid; |
34dc7c2f | 5110 | |
b128c09f BB |
5111 | VERIFY(nvlist_lookup_uint64(nvpp[i], ZPOOL_CONFIG_GUID, |
5112 | &guid) == 0); | |
34dc7c2f | 5113 | |
b128c09f BB |
5114 | if (guid == target_guid) |
5115 | return (nvpp[i]); | |
34dc7c2f BB |
5116 | } |
5117 | ||
b128c09f | 5118 | return (NULL); |
34dc7c2f BB |
5119 | } |
5120 | ||
b128c09f BB |
5121 | static void |
5122 | spa_vdev_remove_aux(nvlist_t *config, char *name, nvlist_t **dev, int count, | |
5123 | nvlist_t *dev_to_remove) | |
34dc7c2f | 5124 | { |
b128c09f | 5125 | nvlist_t **newdev = NULL; |
d6320ddb | 5126 | int i, j; |
34dc7c2f | 5127 | |
b128c09f | 5128 | if (count > 1) |
b8d06fca | 5129 | newdev = kmem_alloc((count - 1) * sizeof (void *), KM_PUSHPAGE); |
34dc7c2f | 5130 | |
d6320ddb | 5131 | for (i = 0, j = 0; i < count; i++) { |
b128c09f BB |
5132 | if (dev[i] == dev_to_remove) |
5133 | continue; | |
b8d06fca | 5134 | VERIFY(nvlist_dup(dev[i], &newdev[j++], KM_PUSHPAGE) == 0); |
34dc7c2f BB |
5135 | } |
5136 | ||
b128c09f BB |
5137 | VERIFY(nvlist_remove(config, name, DATA_TYPE_NVLIST_ARRAY) == 0); |
5138 | VERIFY(nvlist_add_nvlist_array(config, name, newdev, count - 1) == 0); | |
34dc7c2f | 5139 | |
d6320ddb | 5140 | for (i = 0; i < count - 1; i++) |
b128c09f | 5141 | nvlist_free(newdev[i]); |
34dc7c2f | 5142 | |
b128c09f BB |
5143 | if (count > 1) |
5144 | kmem_free(newdev, (count - 1) * sizeof (void *)); | |
34dc7c2f BB |
5145 | } |
5146 | ||
428870ff BB |
5147 | /* |
5148 | * Evacuate the device. | |
5149 | */ | |
5150 | static int | |
5151 | spa_vdev_remove_evacuate(spa_t *spa, vdev_t *vd) | |
5152 | { | |
5153 | uint64_t txg; | |
5154 | int error = 0; | |
5155 | ||
5156 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
5157 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
5158 | ASSERT(vd == vd->vdev_top); | |
5159 | ||
5160 | /* | |
5161 | * Evacuate the device. We don't hold the config lock as writer | |
5162 | * since we need to do I/O but we do keep the | |
5163 | * spa_namespace_lock held. Once this completes the device | |
5164 | * should no longer have any blocks allocated on it. | |
5165 | */ | |
5166 | if (vd->vdev_islog) { | |
5167 | if (vd->vdev_stat.vs_alloc != 0) | |
5168 | error = spa_offline_log(spa); | |
5169 | } else { | |
5170 | error = ENOTSUP; | |
5171 | } | |
5172 | ||
5173 | if (error) | |
5174 | return (error); | |
5175 | ||
5176 | /* | |
5177 | * The evacuation succeeded. Remove any remaining MOS metadata | |
5178 | * associated with this vdev, and wait for these changes to sync. | |
5179 | */ | |
c99c9001 | 5180 | ASSERT0(vd->vdev_stat.vs_alloc); |
428870ff BB |
5181 | txg = spa_vdev_config_enter(spa); |
5182 | vd->vdev_removing = B_TRUE; | |
5183 | vdev_dirty(vd, 0, NULL, txg); | |
5184 | vdev_config_dirty(vd); | |
5185 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
5186 | ||
5187 | return (0); | |
5188 | } | |
5189 | ||
5190 | /* | |
5191 | * Complete the removal by cleaning up the namespace. | |
5192 | */ | |
5193 | static void | |
5194 | spa_vdev_remove_from_namespace(spa_t *spa, vdev_t *vd) | |
5195 | { | |
5196 | vdev_t *rvd = spa->spa_root_vdev; | |
5197 | uint64_t id = vd->vdev_id; | |
5198 | boolean_t last_vdev = (id == (rvd->vdev_children - 1)); | |
5199 | ||
5200 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
5201 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); | |
5202 | ASSERT(vd == vd->vdev_top); | |
5203 | ||
5204 | /* | |
5205 | * Only remove any devices which are empty. | |
5206 | */ | |
5207 | if (vd->vdev_stat.vs_alloc != 0) | |
5208 | return; | |
5209 | ||
5210 | (void) vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
5211 | ||
5212 | if (list_link_active(&vd->vdev_state_dirty_node)) | |
5213 | vdev_state_clean(vd); | |
5214 | if (list_link_active(&vd->vdev_config_dirty_node)) | |
5215 | vdev_config_clean(vd); | |
5216 | ||
5217 | vdev_free(vd); | |
5218 | ||
5219 | if (last_vdev) { | |
5220 | vdev_compact_children(rvd); | |
5221 | } else { | |
5222 | vd = vdev_alloc_common(spa, id, 0, &vdev_hole_ops); | |
5223 | vdev_add_child(rvd, vd); | |
5224 | } | |
5225 | vdev_config_dirty(rvd); | |
5226 | ||
5227 | /* | |
5228 | * Reassess the health of our root vdev. | |
5229 | */ | |
5230 | vdev_reopen(rvd); | |
5231 | } | |
5232 | ||
5233 | /* | |
5234 | * Remove a device from the pool - | |
5235 | * | |
5236 | * Removing a device from the vdev namespace requires several steps | |
5237 | * and can take a significant amount of time. As a result we use | |
5238 | * the spa_vdev_config_[enter/exit] functions which allow us to | |
5239 | * grab and release the spa_config_lock while still holding the namespace | |
5240 | * lock. During each step the configuration is synced out. | |
5241 | */ | |
5242 | ||
34dc7c2f BB |
5243 | /* |
5244 | * Remove a device from the pool. Currently, this supports removing only hot | |
428870ff | 5245 | * spares, slogs, and level 2 ARC devices. |
34dc7c2f BB |
5246 | */ |
5247 | int | |
5248 | spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
5249 | { | |
5250 | vdev_t *vd; | |
428870ff | 5251 | metaslab_group_t *mg; |
b128c09f | 5252 | nvlist_t **spares, **l2cache, *nv; |
fb5f0bc8 | 5253 | uint64_t txg = 0; |
428870ff | 5254 | uint_t nspares, nl2cache; |
34dc7c2f | 5255 | int error = 0; |
fb5f0bc8 | 5256 | boolean_t locked = MUTEX_HELD(&spa_namespace_lock); |
34dc7c2f | 5257 | |
572e2857 BB |
5258 | ASSERT(spa_writeable(spa)); |
5259 | ||
fb5f0bc8 BB |
5260 | if (!locked) |
5261 | txg = spa_vdev_enter(spa); | |
34dc7c2f | 5262 | |
b128c09f | 5263 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
5264 | |
5265 | if (spa->spa_spares.sav_vdevs != NULL && | |
34dc7c2f | 5266 | nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, |
b128c09f BB |
5267 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0 && |
5268 | (nv = spa_nvlist_lookup_by_guid(spares, nspares, guid)) != NULL) { | |
5269 | /* | |
5270 | * Only remove the hot spare if it's not currently in use | |
5271 | * in this pool. | |
5272 | */ | |
5273 | if (vd == NULL || unspare) { | |
5274 | spa_vdev_remove_aux(spa->spa_spares.sav_config, | |
5275 | ZPOOL_CONFIG_SPARES, spares, nspares, nv); | |
5276 | spa_load_spares(spa); | |
5277 | spa->spa_spares.sav_sync = B_TRUE; | |
5278 | } else { | |
5279 | error = EBUSY; | |
5280 | } | |
5281 | } else if (spa->spa_l2cache.sav_vdevs != NULL && | |
34dc7c2f | 5282 | nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, |
b128c09f BB |
5283 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && |
5284 | (nv = spa_nvlist_lookup_by_guid(l2cache, nl2cache, guid)) != NULL) { | |
5285 | /* | |
5286 | * Cache devices can always be removed. | |
5287 | */ | |
5288 | spa_vdev_remove_aux(spa->spa_l2cache.sav_config, | |
5289 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); | |
34dc7c2f BB |
5290 | spa_load_l2cache(spa); |
5291 | spa->spa_l2cache.sav_sync = B_TRUE; | |
428870ff BB |
5292 | } else if (vd != NULL && vd->vdev_islog) { |
5293 | ASSERT(!locked); | |
5294 | ASSERT(vd == vd->vdev_top); | |
5295 | ||
5296 | /* | |
5297 | * XXX - Once we have bp-rewrite this should | |
5298 | * become the common case. | |
5299 | */ | |
5300 | ||
5301 | mg = vd->vdev_mg; | |
5302 | ||
5303 | /* | |
5304 | * Stop allocating from this vdev. | |
5305 | */ | |
5306 | metaslab_group_passivate(mg); | |
5307 | ||
5308 | /* | |
5309 | * Wait for the youngest allocations and frees to sync, | |
5310 | * and then wait for the deferral of those frees to finish. | |
5311 | */ | |
5312 | spa_vdev_config_exit(spa, NULL, | |
5313 | txg + TXG_CONCURRENT_STATES + TXG_DEFER_SIZE, 0, FTAG); | |
5314 | ||
5315 | /* | |
5316 | * Attempt to evacuate the vdev. | |
5317 | */ | |
5318 | error = spa_vdev_remove_evacuate(spa, vd); | |
5319 | ||
5320 | txg = spa_vdev_config_enter(spa); | |
5321 | ||
5322 | /* | |
5323 | * If we couldn't evacuate the vdev, unwind. | |
5324 | */ | |
5325 | if (error) { | |
5326 | metaslab_group_activate(mg); | |
5327 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5328 | } | |
5329 | ||
5330 | /* | |
5331 | * Clean up the vdev namespace. | |
5332 | */ | |
5333 | spa_vdev_remove_from_namespace(spa, vd); | |
5334 | ||
b128c09f BB |
5335 | } else if (vd != NULL) { |
5336 | /* | |
5337 | * Normal vdevs cannot be removed (yet). | |
5338 | */ | |
5339 | error = ENOTSUP; | |
5340 | } else { | |
5341 | /* | |
5342 | * There is no vdev of any kind with the specified guid. | |
5343 | */ | |
5344 | error = ENOENT; | |
34dc7c2f BB |
5345 | } |
5346 | ||
fb5f0bc8 BB |
5347 | if (!locked) |
5348 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
5349 | ||
5350 | return (error); | |
34dc7c2f BB |
5351 | } |
5352 | ||
5353 | /* | |
5354 | * Find any device that's done replacing, or a vdev marked 'unspare' that's | |
5355 | * current spared, so we can detach it. | |
5356 | */ | |
5357 | static vdev_t * | |
5358 | spa_vdev_resilver_done_hunt(vdev_t *vd) | |
5359 | { | |
5360 | vdev_t *newvd, *oldvd; | |
d6320ddb | 5361 | int c; |
34dc7c2f | 5362 | |
d6320ddb | 5363 | for (c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
5364 | oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
5365 | if (oldvd != NULL) | |
5366 | return (oldvd); | |
5367 | } | |
5368 | ||
5369 | /* | |
572e2857 BB |
5370 | * Check for a completed replacement. We always consider the first |
5371 | * vdev in the list to be the oldest vdev, and the last one to be | |
5372 | * the newest (see spa_vdev_attach() for how that works). In | |
5373 | * the case where the newest vdev is faulted, we will not automatically | |
5374 | * remove it after a resilver completes. This is OK as it will require | |
5375 | * user intervention to determine which disk the admin wishes to keep. | |
34dc7c2f | 5376 | */ |
572e2857 BB |
5377 | if (vd->vdev_ops == &vdev_replacing_ops) { |
5378 | ASSERT(vd->vdev_children > 1); | |
5379 | ||
5380 | newvd = vd->vdev_child[vd->vdev_children - 1]; | |
34dc7c2f | 5381 | oldvd = vd->vdev_child[0]; |
34dc7c2f | 5382 | |
fb5f0bc8 | 5383 | if (vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 5384 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
fb5f0bc8 | 5385 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 5386 | return (oldvd); |
34dc7c2f BB |
5387 | } |
5388 | ||
5389 | /* | |
5390 | * Check for a completed resilver with the 'unspare' flag set. | |
5391 | */ | |
572e2857 BB |
5392 | if (vd->vdev_ops == &vdev_spare_ops) { |
5393 | vdev_t *first = vd->vdev_child[0]; | |
5394 | vdev_t *last = vd->vdev_child[vd->vdev_children - 1]; | |
5395 | ||
5396 | if (last->vdev_unspare) { | |
5397 | oldvd = first; | |
5398 | newvd = last; | |
5399 | } else if (first->vdev_unspare) { | |
5400 | oldvd = last; | |
5401 | newvd = first; | |
5402 | } else { | |
5403 | oldvd = NULL; | |
5404 | } | |
34dc7c2f | 5405 | |
572e2857 | 5406 | if (oldvd != NULL && |
fb5f0bc8 | 5407 | vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 5408 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
572e2857 | 5409 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 5410 | return (oldvd); |
572e2857 BB |
5411 | |
5412 | /* | |
5413 | * If there are more than two spares attached to a disk, | |
5414 | * and those spares are not required, then we want to | |
5415 | * attempt to free them up now so that they can be used | |
5416 | * by other pools. Once we're back down to a single | |
5417 | * disk+spare, we stop removing them. | |
5418 | */ | |
5419 | if (vd->vdev_children > 2) { | |
5420 | newvd = vd->vdev_child[1]; | |
5421 | ||
5422 | if (newvd->vdev_isspare && last->vdev_isspare && | |
5423 | vdev_dtl_empty(last, DTL_MISSING) && | |
5424 | vdev_dtl_empty(last, DTL_OUTAGE) && | |
5425 | !vdev_dtl_required(newvd)) | |
5426 | return (newvd); | |
34dc7c2f | 5427 | } |
34dc7c2f BB |
5428 | } |
5429 | ||
5430 | return (NULL); | |
5431 | } | |
5432 | ||
5433 | static void | |
5434 | spa_vdev_resilver_done(spa_t *spa) | |
5435 | { | |
fb5f0bc8 BB |
5436 | vdev_t *vd, *pvd, *ppvd; |
5437 | uint64_t guid, sguid, pguid, ppguid; | |
34dc7c2f | 5438 | |
fb5f0bc8 | 5439 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5440 | |
5441 | while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { | |
fb5f0bc8 BB |
5442 | pvd = vd->vdev_parent; |
5443 | ppvd = pvd->vdev_parent; | |
34dc7c2f | 5444 | guid = vd->vdev_guid; |
fb5f0bc8 BB |
5445 | pguid = pvd->vdev_guid; |
5446 | ppguid = ppvd->vdev_guid; | |
5447 | sguid = 0; | |
34dc7c2f BB |
5448 | /* |
5449 | * If we have just finished replacing a hot spared device, then | |
5450 | * we need to detach the parent's first child (the original hot | |
5451 | * spare) as well. | |
5452 | */ | |
572e2857 BB |
5453 | if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0 && |
5454 | ppvd->vdev_children == 2) { | |
34dc7c2f | 5455 | ASSERT(pvd->vdev_ops == &vdev_replacing_ops); |
fb5f0bc8 | 5456 | sguid = ppvd->vdev_child[1]->vdev_guid; |
34dc7c2f | 5457 | } |
fb5f0bc8 BB |
5458 | spa_config_exit(spa, SCL_ALL, FTAG); |
5459 | if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) | |
34dc7c2f | 5460 | return; |
fb5f0bc8 | 5461 | if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) |
34dc7c2f | 5462 | return; |
fb5f0bc8 | 5463 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5464 | } |
5465 | ||
fb5f0bc8 | 5466 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5467 | } |
5468 | ||
5469 | /* | |
428870ff | 5470 | * Update the stored path or FRU for this vdev. |
34dc7c2f BB |
5471 | */ |
5472 | int | |
9babb374 BB |
5473 | spa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value, |
5474 | boolean_t ispath) | |
34dc7c2f | 5475 | { |
b128c09f | 5476 | vdev_t *vd; |
428870ff | 5477 | boolean_t sync = B_FALSE; |
34dc7c2f | 5478 | |
572e2857 BB |
5479 | ASSERT(spa_writeable(spa)); |
5480 | ||
428870ff | 5481 | spa_vdev_state_enter(spa, SCL_ALL); |
34dc7c2f | 5482 | |
9babb374 | 5483 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
428870ff | 5484 | return (spa_vdev_state_exit(spa, NULL, ENOENT)); |
34dc7c2f BB |
5485 | |
5486 | if (!vd->vdev_ops->vdev_op_leaf) | |
428870ff | 5487 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 5488 | |
9babb374 | 5489 | if (ispath) { |
428870ff BB |
5490 | if (strcmp(value, vd->vdev_path) != 0) { |
5491 | spa_strfree(vd->vdev_path); | |
5492 | vd->vdev_path = spa_strdup(value); | |
5493 | sync = B_TRUE; | |
5494 | } | |
9babb374 | 5495 | } else { |
428870ff BB |
5496 | if (vd->vdev_fru == NULL) { |
5497 | vd->vdev_fru = spa_strdup(value); | |
5498 | sync = B_TRUE; | |
5499 | } else if (strcmp(value, vd->vdev_fru) != 0) { | |
9babb374 | 5500 | spa_strfree(vd->vdev_fru); |
428870ff BB |
5501 | vd->vdev_fru = spa_strdup(value); |
5502 | sync = B_TRUE; | |
5503 | } | |
9babb374 | 5504 | } |
34dc7c2f | 5505 | |
428870ff | 5506 | return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0)); |
34dc7c2f BB |
5507 | } |
5508 | ||
9babb374 BB |
5509 | int |
5510 | spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) | |
5511 | { | |
5512 | return (spa_vdev_set_common(spa, guid, newpath, B_TRUE)); | |
5513 | } | |
5514 | ||
5515 | int | |
5516 | spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru) | |
5517 | { | |
5518 | return (spa_vdev_set_common(spa, guid, newfru, B_FALSE)); | |
5519 | } | |
5520 | ||
34dc7c2f BB |
5521 | /* |
5522 | * ========================================================================== | |
428870ff | 5523 | * SPA Scanning |
34dc7c2f BB |
5524 | * ========================================================================== |
5525 | */ | |
5526 | ||
34dc7c2f | 5527 | int |
428870ff BB |
5528 | spa_scan_stop(spa_t *spa) |
5529 | { | |
5530 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
5531 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
5532 | return (EBUSY); | |
5533 | return (dsl_scan_cancel(spa->spa_dsl_pool)); | |
5534 | } | |
5535 | ||
5536 | int | |
5537 | spa_scan(spa_t *spa, pool_scan_func_t func) | |
34dc7c2f | 5538 | { |
b128c09f | 5539 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); |
34dc7c2f | 5540 | |
428870ff | 5541 | if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE) |
34dc7c2f BB |
5542 | return (ENOTSUP); |
5543 | ||
34dc7c2f | 5544 | /* |
b128c09f BB |
5545 | * If a resilver was requested, but there is no DTL on a |
5546 | * writeable leaf device, we have nothing to do. | |
34dc7c2f | 5547 | */ |
428870ff | 5548 | if (func == POOL_SCAN_RESILVER && |
b128c09f BB |
5549 | !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { |
5550 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f BB |
5551 | return (0); |
5552 | } | |
5553 | ||
428870ff | 5554 | return (dsl_scan(spa->spa_dsl_pool, func)); |
34dc7c2f BB |
5555 | } |
5556 | ||
5557 | /* | |
5558 | * ========================================================================== | |
5559 | * SPA async task processing | |
5560 | * ========================================================================== | |
5561 | */ | |
5562 | ||
5563 | static void | |
5564 | spa_async_remove(spa_t *spa, vdev_t *vd) | |
5565 | { | |
d6320ddb BB |
5566 | int c; |
5567 | ||
b128c09f | 5568 | if (vd->vdev_remove_wanted) { |
428870ff BB |
5569 | vd->vdev_remove_wanted = B_FALSE; |
5570 | vd->vdev_delayed_close = B_FALSE; | |
b128c09f | 5571 | vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); |
428870ff BB |
5572 | |
5573 | /* | |
5574 | * We want to clear the stats, but we don't want to do a full | |
5575 | * vdev_clear() as that will cause us to throw away | |
5576 | * degraded/faulted state as well as attempt to reopen the | |
5577 | * device, all of which is a waste. | |
5578 | */ | |
5579 | vd->vdev_stat.vs_read_errors = 0; | |
5580 | vd->vdev_stat.vs_write_errors = 0; | |
5581 | vd->vdev_stat.vs_checksum_errors = 0; | |
5582 | ||
b128c09f BB |
5583 | vdev_state_dirty(vd->vdev_top); |
5584 | } | |
34dc7c2f | 5585 | |
d6320ddb | 5586 | for (c = 0; c < vd->vdev_children; c++) |
b128c09f BB |
5587 | spa_async_remove(spa, vd->vdev_child[c]); |
5588 | } | |
5589 | ||
5590 | static void | |
5591 | spa_async_probe(spa_t *spa, vdev_t *vd) | |
5592 | { | |
d6320ddb BB |
5593 | int c; |
5594 | ||
b128c09f | 5595 | if (vd->vdev_probe_wanted) { |
428870ff | 5596 | vd->vdev_probe_wanted = B_FALSE; |
b128c09f | 5597 | vdev_reopen(vd); /* vdev_open() does the actual probe */ |
34dc7c2f | 5598 | } |
b128c09f | 5599 | |
d6320ddb | 5600 | for (c = 0; c < vd->vdev_children; c++) |
b128c09f | 5601 | spa_async_probe(spa, vd->vdev_child[c]); |
34dc7c2f BB |
5602 | } |
5603 | ||
9babb374 BB |
5604 | static void |
5605 | spa_async_autoexpand(spa_t *spa, vdev_t *vd) | |
5606 | { | |
d6320ddb | 5607 | int c; |
9babb374 BB |
5608 | |
5609 | if (!spa->spa_autoexpand) | |
5610 | return; | |
5611 | ||
d6320ddb | 5612 | for (c = 0; c < vd->vdev_children; c++) { |
9babb374 BB |
5613 | vdev_t *cvd = vd->vdev_child[c]; |
5614 | spa_async_autoexpand(spa, cvd); | |
5615 | } | |
5616 | ||
5617 | if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL) | |
5618 | return; | |
5619 | ||
26685276 | 5620 | spa_event_notify(vd->vdev_spa, vd, FM_EREPORT_ZFS_DEVICE_AUTOEXPAND); |
9babb374 BB |
5621 | } |
5622 | ||
34dc7c2f BB |
5623 | static void |
5624 | spa_async_thread(spa_t *spa) | |
5625 | { | |
d6320ddb | 5626 | int tasks, i; |
34dc7c2f BB |
5627 | |
5628 | ASSERT(spa->spa_sync_on); | |
5629 | ||
5630 | mutex_enter(&spa->spa_async_lock); | |
5631 | tasks = spa->spa_async_tasks; | |
5632 | spa->spa_async_tasks = 0; | |
5633 | mutex_exit(&spa->spa_async_lock); | |
5634 | ||
5635 | /* | |
5636 | * See if the config needs to be updated. | |
5637 | */ | |
5638 | if (tasks & SPA_ASYNC_CONFIG_UPDATE) { | |
428870ff | 5639 | uint64_t old_space, new_space; |
9babb374 | 5640 | |
34dc7c2f | 5641 | mutex_enter(&spa_namespace_lock); |
428870ff | 5642 | old_space = metaslab_class_get_space(spa_normal_class(spa)); |
34dc7c2f | 5643 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
428870ff | 5644 | new_space = metaslab_class_get_space(spa_normal_class(spa)); |
34dc7c2f | 5645 | mutex_exit(&spa_namespace_lock); |
9babb374 BB |
5646 | |
5647 | /* | |
5648 | * If the pool grew as a result of the config update, | |
5649 | * then log an internal history event. | |
5650 | */ | |
428870ff | 5651 | if (new_space != old_space) { |
6f1ffb06 | 5652 | spa_history_log_internal(spa, "vdev online", NULL, |
45d1cae3 | 5653 | "pool '%s' size: %llu(+%llu)", |
428870ff | 5654 | spa_name(spa), new_space, new_space - old_space); |
9babb374 | 5655 | } |
34dc7c2f BB |
5656 | } |
5657 | ||
5658 | /* | |
5659 | * See if any devices need to be marked REMOVED. | |
34dc7c2f | 5660 | */ |
b128c09f | 5661 | if (tasks & SPA_ASYNC_REMOVE) { |
428870ff | 5662 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 5663 | spa_async_remove(spa, spa->spa_root_vdev); |
d6320ddb | 5664 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) |
b128c09f | 5665 | spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); |
d6320ddb | 5666 | for (i = 0; i < spa->spa_spares.sav_count; i++) |
b128c09f BB |
5667 | spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); |
5668 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
34dc7c2f BB |
5669 | } |
5670 | ||
9babb374 BB |
5671 | if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) { |
5672 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
5673 | spa_async_autoexpand(spa, spa->spa_root_vdev); | |
5674 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
5675 | } | |
5676 | ||
34dc7c2f | 5677 | /* |
b128c09f | 5678 | * See if any devices need to be probed. |
34dc7c2f | 5679 | */ |
b128c09f | 5680 | if (tasks & SPA_ASYNC_PROBE) { |
428870ff | 5681 | spa_vdev_state_enter(spa, SCL_NONE); |
b128c09f BB |
5682 | spa_async_probe(spa, spa->spa_root_vdev); |
5683 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
5684 | } | |
34dc7c2f BB |
5685 | |
5686 | /* | |
b128c09f | 5687 | * If any devices are done replacing, detach them. |
34dc7c2f | 5688 | */ |
b128c09f BB |
5689 | if (tasks & SPA_ASYNC_RESILVER_DONE) |
5690 | spa_vdev_resilver_done(spa); | |
34dc7c2f BB |
5691 | |
5692 | /* | |
5693 | * Kick off a resilver. | |
5694 | */ | |
b128c09f | 5695 | if (tasks & SPA_ASYNC_RESILVER) |
428870ff | 5696 | dsl_resilver_restart(spa->spa_dsl_pool, 0); |
34dc7c2f BB |
5697 | |
5698 | /* | |
5699 | * Let the world know that we're done. | |
5700 | */ | |
5701 | mutex_enter(&spa->spa_async_lock); | |
5702 | spa->spa_async_thread = NULL; | |
5703 | cv_broadcast(&spa->spa_async_cv); | |
5704 | mutex_exit(&spa->spa_async_lock); | |
5705 | thread_exit(); | |
5706 | } | |
5707 | ||
5708 | void | |
5709 | spa_async_suspend(spa_t *spa) | |
5710 | { | |
5711 | mutex_enter(&spa->spa_async_lock); | |
5712 | spa->spa_async_suspended++; | |
5713 | while (spa->spa_async_thread != NULL) | |
5714 | cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
5715 | mutex_exit(&spa->spa_async_lock); | |
5716 | } | |
5717 | ||
5718 | void | |
5719 | spa_async_resume(spa_t *spa) | |
5720 | { | |
5721 | mutex_enter(&spa->spa_async_lock); | |
5722 | ASSERT(spa->spa_async_suspended != 0); | |
5723 | spa->spa_async_suspended--; | |
5724 | mutex_exit(&spa->spa_async_lock); | |
5725 | } | |
5726 | ||
5727 | static void | |
5728 | spa_async_dispatch(spa_t *spa) | |
5729 | { | |
5730 | mutex_enter(&spa->spa_async_lock); | |
5731 | if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
5732 | spa->spa_async_thread == NULL && | |
5733 | rootdir != NULL && !vn_is_readonly(rootdir)) | |
5734 | spa->spa_async_thread = thread_create(NULL, 0, | |
5735 | spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
5736 | mutex_exit(&spa->spa_async_lock); | |
5737 | } | |
5738 | ||
5739 | void | |
5740 | spa_async_request(spa_t *spa, int task) | |
5741 | { | |
428870ff | 5742 | zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task); |
34dc7c2f BB |
5743 | mutex_enter(&spa->spa_async_lock); |
5744 | spa->spa_async_tasks |= task; | |
5745 | mutex_exit(&spa->spa_async_lock); | |
5746 | } | |
5747 | ||
5748 | /* | |
5749 | * ========================================================================== | |
5750 | * SPA syncing routines | |
5751 | * ========================================================================== | |
5752 | */ | |
5753 | ||
428870ff BB |
5754 | static int |
5755 | bpobj_enqueue_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
34dc7c2f | 5756 | { |
428870ff BB |
5757 | bpobj_t *bpo = arg; |
5758 | bpobj_enqueue(bpo, bp, tx); | |
5759 | return (0); | |
5760 | } | |
34dc7c2f | 5761 | |
428870ff BB |
5762 | static int |
5763 | spa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
5764 | { | |
5765 | zio_t *zio = arg; | |
34dc7c2f | 5766 | |
428870ff BB |
5767 | zio_nowait(zio_free_sync(zio, zio->io_spa, dmu_tx_get_txg(tx), bp, |
5768 | zio->io_flags)); | |
5769 | return (0); | |
34dc7c2f BB |
5770 | } |
5771 | ||
5772 | static void | |
5773 | spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) | |
5774 | { | |
5775 | char *packed = NULL; | |
b128c09f | 5776 | size_t bufsize; |
34dc7c2f BB |
5777 | size_t nvsize = 0; |
5778 | dmu_buf_t *db; | |
5779 | ||
5780 | VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
5781 | ||
b128c09f BB |
5782 | /* |
5783 | * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration | |
5784 | * information. This avoids the dbuf_will_dirty() path and | |
5785 | * saves us a pre-read to get data we don't actually care about. | |
5786 | */ | |
9ae529ec | 5787 | bufsize = P2ROUNDUP((uint64_t)nvsize, SPA_CONFIG_BLOCKSIZE); |
b8d06fca | 5788 | packed = vmem_alloc(bufsize, KM_PUSHPAGE); |
34dc7c2f BB |
5789 | |
5790 | VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
b8d06fca | 5791 | KM_PUSHPAGE) == 0); |
b128c09f | 5792 | bzero(packed + nvsize, bufsize - nvsize); |
34dc7c2f | 5793 | |
b128c09f | 5794 | dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); |
34dc7c2f | 5795 | |
00b46022 | 5796 | vmem_free(packed, bufsize); |
34dc7c2f BB |
5797 | |
5798 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
5799 | dmu_buf_will_dirty(db, tx); | |
5800 | *(uint64_t *)db->db_data = nvsize; | |
5801 | dmu_buf_rele(db, FTAG); | |
5802 | } | |
5803 | ||
5804 | static void | |
5805 | spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, | |
5806 | const char *config, const char *entry) | |
5807 | { | |
5808 | nvlist_t *nvroot; | |
5809 | nvlist_t **list; | |
5810 | int i; | |
5811 | ||
5812 | if (!sav->sav_sync) | |
5813 | return; | |
5814 | ||
5815 | /* | |
5816 | * Update the MOS nvlist describing the list of available devices. | |
5817 | * spa_validate_aux() will have already made sure this nvlist is | |
5818 | * valid and the vdevs are labeled appropriately. | |
5819 | */ | |
5820 | if (sav->sav_object == 0) { | |
5821 | sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
5822 | DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
5823 | sizeof (uint64_t), tx); | |
5824 | VERIFY(zap_update(spa->spa_meta_objset, | |
5825 | DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, | |
5826 | &sav->sav_object, tx) == 0); | |
5827 | } | |
5828 | ||
b8d06fca | 5829 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0); |
34dc7c2f BB |
5830 | if (sav->sav_count == 0) { |
5831 | VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
5832 | } else { | |
b8d06fca | 5833 | list = kmem_alloc(sav->sav_count * sizeof (void *), KM_PUSHPAGE); |
34dc7c2f BB |
5834 | for (i = 0; i < sav->sav_count; i++) |
5835 | list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
428870ff | 5836 | B_FALSE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
5837 | VERIFY(nvlist_add_nvlist_array(nvroot, config, list, |
5838 | sav->sav_count) == 0); | |
5839 | for (i = 0; i < sav->sav_count; i++) | |
5840 | nvlist_free(list[i]); | |
5841 | kmem_free(list, sav->sav_count * sizeof (void *)); | |
5842 | } | |
5843 | ||
5844 | spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); | |
5845 | nvlist_free(nvroot); | |
5846 | ||
5847 | sav->sav_sync = B_FALSE; | |
5848 | } | |
5849 | ||
5850 | static void | |
5851 | spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) | |
5852 | { | |
5853 | nvlist_t *config; | |
5854 | ||
b128c09f | 5855 | if (list_is_empty(&spa->spa_config_dirty_list)) |
34dc7c2f BB |
5856 | return; |
5857 | ||
b128c09f BB |
5858 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
5859 | ||
5860 | config = spa_config_generate(spa, spa->spa_root_vdev, | |
5861 | dmu_tx_get_txg(tx), B_FALSE); | |
5862 | ||
ea0b2538 GW |
5863 | /* |
5864 | * If we're upgrading the spa version then make sure that | |
5865 | * the config object gets updated with the correct version. | |
5866 | */ | |
5867 | if (spa->spa_ubsync.ub_version < spa->spa_uberblock.ub_version) | |
5868 | fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
5869 | spa->spa_uberblock.ub_version); | |
5870 | ||
b128c09f | 5871 | spa_config_exit(spa, SCL_STATE, FTAG); |
34dc7c2f BB |
5872 | |
5873 | if (spa->spa_config_syncing) | |
5874 | nvlist_free(spa->spa_config_syncing); | |
5875 | spa->spa_config_syncing = config; | |
5876 | ||
5877 | spa_sync_nvlist(spa, spa->spa_config_object, config, tx); | |
5878 | } | |
5879 | ||
9ae529ec CS |
5880 | static void |
5881 | spa_sync_version(void *arg1, void *arg2, dmu_tx_t *tx) | |
5882 | { | |
5883 | spa_t *spa = arg1; | |
5884 | uint64_t version = *(uint64_t *)arg2; | |
5885 | ||
5886 | /* | |
5887 | * Setting the version is special cased when first creating the pool. | |
5888 | */ | |
5889 | ASSERT(tx->tx_txg != TXG_INITIAL); | |
5890 | ||
8dca0a9a | 5891 | ASSERT(SPA_VERSION_IS_SUPPORTED(version)); |
9ae529ec CS |
5892 | ASSERT(version >= spa_version(spa)); |
5893 | ||
5894 | spa->spa_uberblock.ub_version = version; | |
5895 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 | 5896 | spa_history_log_internal(spa, "set", tx, "version=%lld", version); |
9ae529ec CS |
5897 | } |
5898 | ||
34dc7c2f BB |
5899 | /* |
5900 | * Set zpool properties. | |
5901 | */ | |
5902 | static void | |
428870ff | 5903 | spa_sync_props(void *arg1, void *arg2, dmu_tx_t *tx) |
34dc7c2f BB |
5904 | { |
5905 | spa_t *spa = arg1; | |
5906 | objset_t *mos = spa->spa_meta_objset; | |
5907 | nvlist_t *nvp = arg2; | |
9ae529ec | 5908 | nvpair_t *elem = NULL; |
b128c09f BB |
5909 | |
5910 | mutex_enter(&spa->spa_props_lock); | |
34dc7c2f | 5911 | |
34dc7c2f | 5912 | while ((elem = nvlist_next_nvpair(nvp, elem))) { |
9ae529ec CS |
5913 | uint64_t intval; |
5914 | char *strval, *fname; | |
5915 | zpool_prop_t prop; | |
5916 | const char *propname; | |
5917 | zprop_type_t proptype; | |
5918 | zfeature_info_t *feature; | |
5919 | ||
5920 | prop = zpool_name_to_prop(nvpair_name(elem)); | |
5921 | switch ((int)prop) { | |
5922 | case ZPROP_INVAL: | |
5923 | /* | |
5924 | * We checked this earlier in spa_prop_validate(). | |
5925 | */ | |
5926 | ASSERT(zpool_prop_feature(nvpair_name(elem))); | |
5927 | ||
5928 | fname = strchr(nvpair_name(elem), '@') + 1; | |
5929 | VERIFY3U(0, ==, zfeature_lookup_name(fname, &feature)); | |
5930 | ||
5931 | spa_feature_enable(spa, feature, tx); | |
6f1ffb06 MA |
5932 | spa_history_log_internal(spa, "set", tx, |
5933 | "%s=enabled", nvpair_name(elem)); | |
9ae529ec CS |
5934 | break; |
5935 | ||
34dc7c2f | 5936 | case ZPOOL_PROP_VERSION: |
9ae529ec | 5937 | VERIFY(nvpair_value_uint64(elem, &intval) == 0); |
34dc7c2f | 5938 | /* |
9ae529ec CS |
5939 | * The version is synced seperatly before other |
5940 | * properties and should be correct by now. | |
34dc7c2f | 5941 | */ |
9ae529ec | 5942 | ASSERT3U(spa_version(spa), >=, intval); |
34dc7c2f BB |
5943 | break; |
5944 | ||
5945 | case ZPOOL_PROP_ALTROOT: | |
5946 | /* | |
5947 | * 'altroot' is a non-persistent property. It should | |
5948 | * have been set temporarily at creation or import time. | |
5949 | */ | |
5950 | ASSERT(spa->spa_root != NULL); | |
5951 | break; | |
5952 | ||
572e2857 | 5953 | case ZPOOL_PROP_READONLY: |
34dc7c2f BB |
5954 | case ZPOOL_PROP_CACHEFILE: |
5955 | /* | |
572e2857 BB |
5956 | * 'readonly' and 'cachefile' are also non-persisitent |
5957 | * properties. | |
34dc7c2f | 5958 | */ |
34dc7c2f | 5959 | break; |
d96eb2b1 DM |
5960 | case ZPOOL_PROP_COMMENT: |
5961 | VERIFY(nvpair_value_string(elem, &strval) == 0); | |
5962 | if (spa->spa_comment != NULL) | |
5963 | spa_strfree(spa->spa_comment); | |
5964 | spa->spa_comment = spa_strdup(strval); | |
5965 | /* | |
5966 | * We need to dirty the configuration on all the vdevs | |
5967 | * so that their labels get updated. It's unnecessary | |
5968 | * to do this for pool creation since the vdev's | |
5969 | * configuratoin has already been dirtied. | |
5970 | */ | |
5971 | if (tx->tx_txg != TXG_INITIAL) | |
5972 | vdev_config_dirty(spa->spa_root_vdev); | |
6f1ffb06 MA |
5973 | spa_history_log_internal(spa, "set", tx, |
5974 | "%s=%s", nvpair_name(elem), strval); | |
d96eb2b1 | 5975 | break; |
34dc7c2f BB |
5976 | default: |
5977 | /* | |
5978 | * Set pool property values in the poolprops mos object. | |
5979 | */ | |
34dc7c2f | 5980 | if (spa->spa_pool_props_object == 0) { |
9ae529ec CS |
5981 | spa->spa_pool_props_object = |
5982 | zap_create_link(mos, DMU_OT_POOL_PROPS, | |
34dc7c2f | 5983 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, |
9ae529ec | 5984 | tx); |
34dc7c2f | 5985 | } |
34dc7c2f BB |
5986 | |
5987 | /* normalize the property name */ | |
5988 | propname = zpool_prop_to_name(prop); | |
5989 | proptype = zpool_prop_get_type(prop); | |
5990 | ||
5991 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
5992 | ASSERT(proptype == PROP_TYPE_STRING); | |
5993 | VERIFY(nvpair_value_string(elem, &strval) == 0); | |
5994 | VERIFY(zap_update(mos, | |
5995 | spa->spa_pool_props_object, propname, | |
5996 | 1, strlen(strval) + 1, strval, tx) == 0); | |
6f1ffb06 MA |
5997 | spa_history_log_internal(spa, "set", tx, |
5998 | "%s=%s", nvpair_name(elem), strval); | |
34dc7c2f BB |
5999 | } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { |
6000 | VERIFY(nvpair_value_uint64(elem, &intval) == 0); | |
6001 | ||
6002 | if (proptype == PROP_TYPE_INDEX) { | |
6003 | const char *unused; | |
6004 | VERIFY(zpool_prop_index_to_string( | |
6005 | prop, intval, &unused) == 0); | |
6006 | } | |
6007 | VERIFY(zap_update(mos, | |
6008 | spa->spa_pool_props_object, propname, | |
6009 | 8, 1, &intval, tx) == 0); | |
6f1ffb06 MA |
6010 | spa_history_log_internal(spa, "set", tx, |
6011 | "%s=%lld", nvpair_name(elem), intval); | |
34dc7c2f BB |
6012 | } else { |
6013 | ASSERT(0); /* not allowed */ | |
6014 | } | |
6015 | ||
6016 | switch (prop) { | |
6017 | case ZPOOL_PROP_DELEGATION: | |
6018 | spa->spa_delegation = intval; | |
6019 | break; | |
6020 | case ZPOOL_PROP_BOOTFS: | |
6021 | spa->spa_bootfs = intval; | |
6022 | break; | |
6023 | case ZPOOL_PROP_FAILUREMODE: | |
6024 | spa->spa_failmode = intval; | |
6025 | break; | |
9babb374 BB |
6026 | case ZPOOL_PROP_AUTOEXPAND: |
6027 | spa->spa_autoexpand = intval; | |
428870ff BB |
6028 | if (tx->tx_txg != TXG_INITIAL) |
6029 | spa_async_request(spa, | |
6030 | SPA_ASYNC_AUTOEXPAND); | |
6031 | break; | |
6032 | case ZPOOL_PROP_DEDUPDITTO: | |
6033 | spa->spa_dedup_ditto = intval; | |
9babb374 | 6034 | break; |
34dc7c2f BB |
6035 | default: |
6036 | break; | |
6037 | } | |
6038 | } | |
6039 | ||
34dc7c2f | 6040 | } |
b128c09f BB |
6041 | |
6042 | mutex_exit(&spa->spa_props_lock); | |
34dc7c2f BB |
6043 | } |
6044 | ||
428870ff BB |
6045 | /* |
6046 | * Perform one-time upgrade on-disk changes. spa_version() does not | |
6047 | * reflect the new version this txg, so there must be no changes this | |
6048 | * txg to anything that the upgrade code depends on after it executes. | |
6049 | * Therefore this must be called after dsl_pool_sync() does the sync | |
6050 | * tasks. | |
6051 | */ | |
6052 | static void | |
6053 | spa_sync_upgrades(spa_t *spa, dmu_tx_t *tx) | |
6054 | { | |
6055 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
6056 | ||
6057 | ASSERT(spa->spa_sync_pass == 1); | |
6058 | ||
6059 | if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && | |
6060 | spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { | |
6061 | dsl_pool_create_origin(dp, tx); | |
6062 | ||
6063 | /* Keeping the origin open increases spa_minref */ | |
6064 | spa->spa_minref += 3; | |
6065 | } | |
6066 | ||
6067 | if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && | |
6068 | spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { | |
6069 | dsl_pool_upgrade_clones(dp, tx); | |
6070 | } | |
6071 | ||
6072 | if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES && | |
6073 | spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) { | |
6074 | dsl_pool_upgrade_dir_clones(dp, tx); | |
6075 | ||
6076 | /* Keeping the freedir open increases spa_minref */ | |
6077 | spa->spa_minref += 3; | |
6078 | } | |
9ae529ec CS |
6079 | |
6080 | if (spa->spa_ubsync.ub_version < SPA_VERSION_FEATURES && | |
6081 | spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) { | |
6082 | spa_feature_create_zap_objects(spa, tx); | |
6083 | } | |
428870ff BB |
6084 | } |
6085 | ||
34dc7c2f BB |
6086 | /* |
6087 | * Sync the specified transaction group. New blocks may be dirtied as | |
6088 | * part of the process, so we iterate until it converges. | |
6089 | */ | |
6090 | void | |
6091 | spa_sync(spa_t *spa, uint64_t txg) | |
6092 | { | |
6093 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
6094 | objset_t *mos = spa->spa_meta_objset; | |
428870ff BB |
6095 | bpobj_t *defer_bpo = &spa->spa_deferred_bpobj; |
6096 | bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK]; | |
34dc7c2f BB |
6097 | vdev_t *rvd = spa->spa_root_vdev; |
6098 | vdev_t *vd; | |
34dc7c2f | 6099 | dmu_tx_t *tx; |
b128c09f | 6100 | int error; |
d6320ddb | 6101 | int c; |
34dc7c2f | 6102 | |
572e2857 BB |
6103 | VERIFY(spa_writeable(spa)); |
6104 | ||
34dc7c2f BB |
6105 | /* |
6106 | * Lock out configuration changes. | |
6107 | */ | |
b128c09f | 6108 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
6109 | |
6110 | spa->spa_syncing_txg = txg; | |
6111 | spa->spa_sync_pass = 0; | |
6112 | ||
b128c09f BB |
6113 | /* |
6114 | * If there are any pending vdev state changes, convert them | |
6115 | * into config changes that go out with this transaction group. | |
6116 | */ | |
6117 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
fb5f0bc8 BB |
6118 | while (list_head(&spa->spa_state_dirty_list) != NULL) { |
6119 | /* | |
6120 | * We need the write lock here because, for aux vdevs, | |
6121 | * calling vdev_config_dirty() modifies sav_config. | |
6122 | * This is ugly and will become unnecessary when we | |
6123 | * eliminate the aux vdev wart by integrating all vdevs | |
6124 | * into the root vdev tree. | |
6125 | */ | |
6126 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
6127 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); | |
6128 | while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { | |
6129 | vdev_state_clean(vd); | |
6130 | vdev_config_dirty(vd); | |
6131 | } | |
6132 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
6133 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
b128c09f BB |
6134 | } |
6135 | spa_config_exit(spa, SCL_STATE, FTAG); | |
6136 | ||
34dc7c2f BB |
6137 | tx = dmu_tx_create_assigned(dp, txg); |
6138 | ||
cc92e9d0 GW |
6139 | spa->spa_sync_starttime = gethrtime(); |
6140 | taskq_cancel_id(system_taskq, spa->spa_deadman_tqid); | |
6141 | spa->spa_deadman_tqid = taskq_dispatch_delay(system_taskq, | |
6142 | spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() + | |
6143 | NSEC_TO_TICK(spa->spa_deadman_synctime)); | |
6144 | ||
34dc7c2f BB |
6145 | /* |
6146 | * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, | |
6147 | * set spa_deflate if we have no raid-z vdevs. | |
6148 | */ | |
6149 | if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && | |
6150 | spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
6151 | int i; | |
6152 | ||
6153 | for (i = 0; i < rvd->vdev_children; i++) { | |
6154 | vd = rvd->vdev_child[i]; | |
6155 | if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
6156 | break; | |
6157 | } | |
6158 | if (i == rvd->vdev_children) { | |
6159 | spa->spa_deflate = TRUE; | |
6160 | VERIFY(0 == zap_add(spa->spa_meta_objset, | |
6161 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
6162 | sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
6163 | } | |
6164 | } | |
6165 | ||
6166 | /* | |
428870ff BB |
6167 | * If anything has changed in this txg, or if someone is waiting |
6168 | * for this txg to sync (eg, spa_vdev_remove()), push the | |
6169 | * deferred frees from the previous txg. If not, leave them | |
6170 | * alone so that we don't generate work on an otherwise idle | |
6171 | * system. | |
34dc7c2f BB |
6172 | */ |
6173 | if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
6174 | !txg_list_empty(&dp->dp_dirty_dirs, txg) || | |
428870ff BB |
6175 | !txg_list_empty(&dp->dp_sync_tasks, txg) || |
6176 | ((dsl_scan_active(dp->dp_scan) || | |
6177 | txg_sync_waiting(dp)) && !spa_shutting_down(spa))) { | |
6178 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
6179 | VERIFY3U(bpobj_iterate(defer_bpo, | |
6180 | spa_free_sync_cb, zio, tx), ==, 0); | |
c99c9001 | 6181 | VERIFY0(zio_wait(zio)); |
428870ff | 6182 | } |
34dc7c2f BB |
6183 | |
6184 | /* | |
6185 | * Iterate to convergence. | |
6186 | */ | |
6187 | do { | |
428870ff | 6188 | int pass = ++spa->spa_sync_pass; |
34dc7c2f BB |
6189 | |
6190 | spa_sync_config_object(spa, tx); | |
6191 | spa_sync_aux_dev(spa, &spa->spa_spares, tx, | |
6192 | ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
6193 | spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
6194 | ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
6195 | spa_errlog_sync(spa, txg); | |
6196 | dsl_pool_sync(dp, txg); | |
6197 | ||
55d85d5a | 6198 | if (pass < zfs_sync_pass_deferred_free) { |
428870ff BB |
6199 | zio_t *zio = zio_root(spa, NULL, NULL, 0); |
6200 | bplist_iterate(free_bpl, spa_free_sync_cb, | |
6201 | zio, tx); | |
6202 | VERIFY(zio_wait(zio) == 0); | |
6203 | } else { | |
6204 | bplist_iterate(free_bpl, bpobj_enqueue_cb, | |
6205 | defer_bpo, tx); | |
34dc7c2f BB |
6206 | } |
6207 | ||
428870ff BB |
6208 | ddt_sync(spa, txg); |
6209 | dsl_scan_sync(dp, tx); | |
34dc7c2f | 6210 | |
c65aa5b2 | 6211 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, txg))) |
428870ff BB |
6212 | vdev_sync(vd, txg); |
6213 | ||
6214 | if (pass == 1) | |
6215 | spa_sync_upgrades(spa, tx); | |
34dc7c2f | 6216 | |
428870ff | 6217 | } while (dmu_objset_is_dirty(mos, txg)); |
34dc7c2f BB |
6218 | |
6219 | /* | |
6220 | * Rewrite the vdev configuration (which includes the uberblock) | |
6221 | * to commit the transaction group. | |
6222 | * | |
6223 | * If there are no dirty vdevs, we sync the uberblock to a few | |
6224 | * random top-level vdevs that are known to be visible in the | |
b128c09f BB |
6225 | * config cache (see spa_vdev_add() for a complete description). |
6226 | * If there *are* dirty vdevs, sync the uberblock to all vdevs. | |
34dc7c2f | 6227 | */ |
b128c09f BB |
6228 | for (;;) { |
6229 | /* | |
6230 | * We hold SCL_STATE to prevent vdev open/close/etc. | |
6231 | * while we're attempting to write the vdev labels. | |
6232 | */ | |
6233 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
6234 | ||
6235 | if (list_is_empty(&spa->spa_config_dirty_list)) { | |
6236 | vdev_t *svd[SPA_DVAS_PER_BP]; | |
6237 | int svdcount = 0; | |
6238 | int children = rvd->vdev_children; | |
6239 | int c0 = spa_get_random(children); | |
b128c09f | 6240 | |
d6320ddb | 6241 | for (c = 0; c < children; c++) { |
b128c09f BB |
6242 | vd = rvd->vdev_child[(c0 + c) % children]; |
6243 | if (vd->vdev_ms_array == 0 || vd->vdev_islog) | |
6244 | continue; | |
6245 | svd[svdcount++] = vd; | |
6246 | if (svdcount == SPA_DVAS_PER_BP) | |
6247 | break; | |
6248 | } | |
9babb374 BB |
6249 | error = vdev_config_sync(svd, svdcount, txg, B_FALSE); |
6250 | if (error != 0) | |
6251 | error = vdev_config_sync(svd, svdcount, txg, | |
6252 | B_TRUE); | |
b128c09f BB |
6253 | } else { |
6254 | error = vdev_config_sync(rvd->vdev_child, | |
9babb374 BB |
6255 | rvd->vdev_children, txg, B_FALSE); |
6256 | if (error != 0) | |
6257 | error = vdev_config_sync(rvd->vdev_child, | |
6258 | rvd->vdev_children, txg, B_TRUE); | |
34dc7c2f | 6259 | } |
34dc7c2f | 6260 | |
3bc7e0fb GW |
6261 | if (error == 0) |
6262 | spa->spa_last_synced_guid = rvd->vdev_guid; | |
6263 | ||
b128c09f BB |
6264 | spa_config_exit(spa, SCL_STATE, FTAG); |
6265 | ||
6266 | if (error == 0) | |
6267 | break; | |
6268 | zio_suspend(spa, NULL); | |
6269 | zio_resume_wait(spa); | |
6270 | } | |
34dc7c2f BB |
6271 | dmu_tx_commit(tx); |
6272 | ||
cc92e9d0 GW |
6273 | taskq_cancel_id(system_taskq, spa->spa_deadman_tqid); |
6274 | spa->spa_deadman_tqid = 0; | |
6275 | ||
34dc7c2f BB |
6276 | /* |
6277 | * Clear the dirty config list. | |
6278 | */ | |
b128c09f | 6279 | while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) |
34dc7c2f BB |
6280 | vdev_config_clean(vd); |
6281 | ||
6282 | /* | |
6283 | * Now that the new config has synced transactionally, | |
6284 | * let it become visible to the config cache. | |
6285 | */ | |
6286 | if (spa->spa_config_syncing != NULL) { | |
6287 | spa_config_set(spa, spa->spa_config_syncing); | |
6288 | spa->spa_config_txg = txg; | |
6289 | spa->spa_config_syncing = NULL; | |
6290 | } | |
6291 | ||
34dc7c2f | 6292 | spa->spa_ubsync = spa->spa_uberblock; |
34dc7c2f | 6293 | |
428870ff | 6294 | dsl_pool_sync_done(dp, txg); |
34dc7c2f BB |
6295 | |
6296 | /* | |
6297 | * Update usable space statistics. | |
6298 | */ | |
c65aa5b2 | 6299 | while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)))) |
34dc7c2f BB |
6300 | vdev_sync_done(vd, txg); |
6301 | ||
428870ff BB |
6302 | spa_update_dspace(spa); |
6303 | ||
34dc7c2f BB |
6304 | /* |
6305 | * It had better be the case that we didn't dirty anything | |
6306 | * since vdev_config_sync(). | |
6307 | */ | |
6308 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
6309 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
6310 | ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
428870ff BB |
6311 | |
6312 | spa->spa_sync_pass = 0; | |
34dc7c2f | 6313 | |
b128c09f | 6314 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f | 6315 | |
428870ff BB |
6316 | spa_handle_ignored_writes(spa); |
6317 | ||
34dc7c2f BB |
6318 | /* |
6319 | * If any async tasks have been requested, kick them off. | |
6320 | */ | |
6321 | spa_async_dispatch(spa); | |
6322 | } | |
6323 | ||
6324 | /* | |
6325 | * Sync all pools. We don't want to hold the namespace lock across these | |
6326 | * operations, so we take a reference on the spa_t and drop the lock during the | |
6327 | * sync. | |
6328 | */ | |
6329 | void | |
6330 | spa_sync_allpools(void) | |
6331 | { | |
6332 | spa_t *spa = NULL; | |
6333 | mutex_enter(&spa_namespace_lock); | |
6334 | while ((spa = spa_next(spa)) != NULL) { | |
572e2857 BB |
6335 | if (spa_state(spa) != POOL_STATE_ACTIVE || |
6336 | !spa_writeable(spa) || spa_suspended(spa)) | |
34dc7c2f BB |
6337 | continue; |
6338 | spa_open_ref(spa, FTAG); | |
6339 | mutex_exit(&spa_namespace_lock); | |
6340 | txg_wait_synced(spa_get_dsl(spa), 0); | |
6341 | mutex_enter(&spa_namespace_lock); | |
6342 | spa_close(spa, FTAG); | |
6343 | } | |
6344 | mutex_exit(&spa_namespace_lock); | |
6345 | } | |
6346 | ||
6347 | /* | |
6348 | * ========================================================================== | |
6349 | * Miscellaneous routines | |
6350 | * ========================================================================== | |
6351 | */ | |
6352 | ||
6353 | /* | |
6354 | * Remove all pools in the system. | |
6355 | */ | |
6356 | void | |
6357 | spa_evict_all(void) | |
6358 | { | |
6359 | spa_t *spa; | |
6360 | ||
6361 | /* | |
6362 | * Remove all cached state. All pools should be closed now, | |
6363 | * so every spa in the AVL tree should be unreferenced. | |
6364 | */ | |
6365 | mutex_enter(&spa_namespace_lock); | |
6366 | while ((spa = spa_next(NULL)) != NULL) { | |
6367 | /* | |
6368 | * Stop async tasks. The async thread may need to detach | |
6369 | * a device that's been replaced, which requires grabbing | |
6370 | * spa_namespace_lock, so we must drop it here. | |
6371 | */ | |
6372 | spa_open_ref(spa, FTAG); | |
6373 | mutex_exit(&spa_namespace_lock); | |
6374 | spa_async_suspend(spa); | |
6375 | mutex_enter(&spa_namespace_lock); | |
34dc7c2f BB |
6376 | spa_close(spa, FTAG); |
6377 | ||
6378 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
6379 | spa_unload(spa); | |
6380 | spa_deactivate(spa); | |
6381 | } | |
6382 | spa_remove(spa); | |
6383 | } | |
6384 | mutex_exit(&spa_namespace_lock); | |
6385 | } | |
6386 | ||
6387 | vdev_t * | |
9babb374 | 6388 | spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux) |
34dc7c2f | 6389 | { |
b128c09f BB |
6390 | vdev_t *vd; |
6391 | int i; | |
6392 | ||
6393 | if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) | |
6394 | return (vd); | |
6395 | ||
9babb374 | 6396 | if (aux) { |
b128c09f BB |
6397 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
6398 | vd = spa->spa_l2cache.sav_vdevs[i]; | |
9babb374 BB |
6399 | if (vd->vdev_guid == guid) |
6400 | return (vd); | |
6401 | } | |
6402 | ||
6403 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
6404 | vd = spa->spa_spares.sav_vdevs[i]; | |
b128c09f BB |
6405 | if (vd->vdev_guid == guid) |
6406 | return (vd); | |
6407 | } | |
6408 | } | |
6409 | ||
6410 | return (NULL); | |
34dc7c2f BB |
6411 | } |
6412 | ||
6413 | void | |
6414 | spa_upgrade(spa_t *spa, uint64_t version) | |
6415 | { | |
572e2857 BB |
6416 | ASSERT(spa_writeable(spa)); |
6417 | ||
b128c09f | 6418 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
6419 | |
6420 | /* | |
6421 | * This should only be called for a non-faulted pool, and since a | |
6422 | * future version would result in an unopenable pool, this shouldn't be | |
6423 | * possible. | |
6424 | */ | |
8dca0a9a | 6425 | ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version)); |
34dc7c2f BB |
6426 | ASSERT(version >= spa->spa_uberblock.ub_version); |
6427 | ||
6428 | spa->spa_uberblock.ub_version = version; | |
6429 | vdev_config_dirty(spa->spa_root_vdev); | |
6430 | ||
b128c09f | 6431 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
6432 | |
6433 | txg_wait_synced(spa_get_dsl(spa), 0); | |
6434 | } | |
6435 | ||
6436 | boolean_t | |
6437 | spa_has_spare(spa_t *spa, uint64_t guid) | |
6438 | { | |
6439 | int i; | |
6440 | uint64_t spareguid; | |
6441 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
6442 | ||
6443 | for (i = 0; i < sav->sav_count; i++) | |
6444 | if (sav->sav_vdevs[i]->vdev_guid == guid) | |
6445 | return (B_TRUE); | |
6446 | ||
6447 | for (i = 0; i < sav->sav_npending; i++) { | |
6448 | if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
6449 | &spareguid) == 0 && spareguid == guid) | |
6450 | return (B_TRUE); | |
6451 | } | |
6452 | ||
6453 | return (B_FALSE); | |
6454 | } | |
6455 | ||
b128c09f BB |
6456 | /* |
6457 | * Check if a pool has an active shared spare device. | |
6458 | * Note: reference count of an active spare is 2, as a spare and as a replace | |
6459 | */ | |
6460 | static boolean_t | |
6461 | spa_has_active_shared_spare(spa_t *spa) | |
6462 | { | |
6463 | int i, refcnt; | |
6464 | uint64_t pool; | |
6465 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
6466 | ||
6467 | for (i = 0; i < sav->sav_count; i++) { | |
6468 | if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, | |
6469 | &refcnt) && pool != 0ULL && pool == spa_guid(spa) && | |
6470 | refcnt > 2) | |
6471 | return (B_TRUE); | |
6472 | } | |
6473 | ||
6474 | return (B_FALSE); | |
6475 | } | |
6476 | ||
34dc7c2f | 6477 | /* |
26685276 | 6478 | * Post a FM_EREPORT_ZFS_* event from sys/fm/fs/zfs.h. The payload will be |
34dc7c2f BB |
6479 | * filled in from the spa and (optionally) the vdev. This doesn't do anything |
6480 | * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
6481 | * or zdb as real changes. | |
6482 | */ | |
6483 | void | |
6484 | spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
6485 | { | |
6486 | #ifdef _KERNEL | |
26685276 | 6487 | zfs_ereport_post(name, spa, vd, NULL, 0, 0); |
34dc7c2f BB |
6488 | #endif |
6489 | } | |
c28b2279 BB |
6490 | |
6491 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
6492 | /* state manipulation functions */ | |
6493 | EXPORT_SYMBOL(spa_open); | |
6494 | EXPORT_SYMBOL(spa_open_rewind); | |
6495 | EXPORT_SYMBOL(spa_get_stats); | |
6496 | EXPORT_SYMBOL(spa_create); | |
6497 | EXPORT_SYMBOL(spa_import_rootpool); | |
6498 | EXPORT_SYMBOL(spa_import); | |
6499 | EXPORT_SYMBOL(spa_tryimport); | |
6500 | EXPORT_SYMBOL(spa_destroy); | |
6501 | EXPORT_SYMBOL(spa_export); | |
6502 | EXPORT_SYMBOL(spa_reset); | |
6503 | EXPORT_SYMBOL(spa_async_request); | |
6504 | EXPORT_SYMBOL(spa_async_suspend); | |
6505 | EXPORT_SYMBOL(spa_async_resume); | |
6506 | EXPORT_SYMBOL(spa_inject_addref); | |
6507 | EXPORT_SYMBOL(spa_inject_delref); | |
6508 | EXPORT_SYMBOL(spa_scan_stat_init); | |
6509 | EXPORT_SYMBOL(spa_scan_get_stats); | |
6510 | ||
6511 | /* device maniion */ | |
6512 | EXPORT_SYMBOL(spa_vdev_add); | |
6513 | EXPORT_SYMBOL(spa_vdev_attach); | |
6514 | EXPORT_SYMBOL(spa_vdev_detach); | |
6515 | EXPORT_SYMBOL(spa_vdev_remove); | |
6516 | EXPORT_SYMBOL(spa_vdev_setpath); | |
6517 | EXPORT_SYMBOL(spa_vdev_setfru); | |
6518 | EXPORT_SYMBOL(spa_vdev_split_mirror); | |
6519 | ||
6520 | /* spare statech is global across all pools) */ | |
6521 | EXPORT_SYMBOL(spa_spare_add); | |
6522 | EXPORT_SYMBOL(spa_spare_remove); | |
6523 | EXPORT_SYMBOL(spa_spare_exists); | |
6524 | EXPORT_SYMBOL(spa_spare_activate); | |
6525 | ||
6526 | /* L2ARC statech is global across all pools) */ | |
6527 | EXPORT_SYMBOL(spa_l2cache_add); | |
6528 | EXPORT_SYMBOL(spa_l2cache_remove); | |
6529 | EXPORT_SYMBOL(spa_l2cache_exists); | |
6530 | EXPORT_SYMBOL(spa_l2cache_activate); | |
6531 | EXPORT_SYMBOL(spa_l2cache_drop); | |
6532 | ||
6533 | /* scanning */ | |
6534 | EXPORT_SYMBOL(spa_scan); | |
6535 | EXPORT_SYMBOL(spa_scan_stop); | |
6536 | ||
6537 | /* spa syncing */ | |
6538 | EXPORT_SYMBOL(spa_sync); /* only for DMU use */ | |
6539 | EXPORT_SYMBOL(spa_sync_allpools); | |
6540 | ||
6541 | /* properties */ | |
6542 | EXPORT_SYMBOL(spa_prop_set); | |
6543 | EXPORT_SYMBOL(spa_prop_get); | |
6544 | EXPORT_SYMBOL(spa_prop_clear_bootfs); | |
6545 | ||
6546 | /* asynchronous event notification */ | |
6547 | EXPORT_SYMBOL(spa_event_notify); | |
6548 | #endif |