]>
Commit | Line | Data |
---|---|---|
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 | /* | |
23 | * Copyright 2008 Sun Microsystems, Inc. All rights reserved. | |
24 | * Use is subject to license terms. | |
25 | */ | |
26 | ||
34dc7c2f BB |
27 | /* |
28 | * This file contains all the routines used when modifying on-disk SPA state. | |
29 | * This includes opening, importing, destroying, exporting a pool, and syncing a | |
30 | * pool. | |
31 | */ | |
32 | ||
33 | #include <sys/zfs_context.h> | |
34 | #include <sys/fm/fs/zfs.h> | |
35 | #include <sys/spa_impl.h> | |
36 | #include <sys/zio.h> | |
37 | #include <sys/zio_checksum.h> | |
38 | #include <sys/zio_compress.h> | |
39 | #include <sys/dmu.h> | |
40 | #include <sys/dmu_tx.h> | |
41 | #include <sys/zap.h> | |
42 | #include <sys/zil.h> | |
43 | #include <sys/vdev_impl.h> | |
44 | #include <sys/metaslab.h> | |
45 | #include <sys/uberblock_impl.h> | |
46 | #include <sys/txg.h> | |
47 | #include <sys/avl.h> | |
48 | #include <sys/dmu_traverse.h> | |
49 | #include <sys/dmu_objset.h> | |
50 | #include <sys/unique.h> | |
51 | #include <sys/dsl_pool.h> | |
52 | #include <sys/dsl_dataset.h> | |
53 | #include <sys/dsl_dir.h> | |
54 | #include <sys/dsl_prop.h> | |
55 | #include <sys/dsl_synctask.h> | |
56 | #include <sys/fs/zfs.h> | |
57 | #include <sys/arc.h> | |
58 | #include <sys/callb.h> | |
59 | #include <sys/systeminfo.h> | |
60 | #include <sys/sunddi.h> | |
61 | #include <sys/spa_boot.h> | |
62 | ||
63 | #include "zfs_prop.h" | |
64 | #include "zfs_comutil.h" | |
65 | ||
b128c09f BB |
66 | int zio_taskq_threads[ZIO_TYPES][ZIO_TASKQ_TYPES] = { |
67 | /* ISSUE INTR */ | |
68 | { 1, 1 }, /* ZIO_TYPE_NULL */ | |
69 | { 1, 8 }, /* ZIO_TYPE_READ */ | |
70 | { 8, 1 }, /* ZIO_TYPE_WRITE */ | |
71 | { 1, 1 }, /* ZIO_TYPE_FREE */ | |
72 | { 1, 1 }, /* ZIO_TYPE_CLAIM */ | |
73 | { 1, 1 }, /* ZIO_TYPE_IOCTL */ | |
74 | }; | |
34dc7c2f BB |
75 | |
76 | static void spa_sync_props(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx); | |
b128c09f | 77 | static boolean_t spa_has_active_shared_spare(spa_t *spa); |
34dc7c2f BB |
78 | |
79 | /* | |
80 | * ========================================================================== | |
81 | * SPA properties routines | |
82 | * ========================================================================== | |
83 | */ | |
84 | ||
85 | /* | |
86 | * Add a (source=src, propname=propval) list to an nvlist. | |
87 | */ | |
88 | static void | |
89 | spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, | |
90 | uint64_t intval, zprop_source_t src) | |
91 | { | |
92 | const char *propname = zpool_prop_to_name(prop); | |
93 | nvlist_t *propval; | |
94 | ||
95 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
96 | VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); | |
97 | ||
98 | if (strval != NULL) | |
99 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); | |
100 | else | |
101 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); | |
102 | ||
103 | VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); | |
104 | nvlist_free(propval); | |
105 | } | |
106 | ||
107 | /* | |
108 | * Get property values from the spa configuration. | |
109 | */ | |
110 | static void | |
111 | spa_prop_get_config(spa_t *spa, nvlist_t **nvp) | |
112 | { | |
113 | uint64_t size = spa_get_space(spa); | |
114 | uint64_t used = spa_get_alloc(spa); | |
115 | uint64_t cap, version; | |
116 | zprop_source_t src = ZPROP_SRC_NONE; | |
b128c09f BB |
117 | spa_config_dirent_t *dp; |
118 | ||
119 | ASSERT(MUTEX_HELD(&spa->spa_props_lock)); | |
34dc7c2f BB |
120 | |
121 | /* | |
122 | * readonly properties | |
123 | */ | |
b128c09f | 124 | spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); |
34dc7c2f BB |
125 | spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); |
126 | spa_prop_add_list(*nvp, ZPOOL_PROP_USED, NULL, used, src); | |
127 | spa_prop_add_list(*nvp, ZPOOL_PROP_AVAILABLE, NULL, size - used, src); | |
128 | ||
129 | cap = (size == 0) ? 0 : (used * 100 / size); | |
130 | spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); | |
131 | ||
132 | spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); | |
133 | spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, | |
134 | spa->spa_root_vdev->vdev_state, src); | |
135 | ||
136 | /* | |
137 | * settable properties that are not stored in the pool property object. | |
138 | */ | |
139 | version = spa_version(spa); | |
140 | if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) | |
141 | src = ZPROP_SRC_DEFAULT; | |
142 | else | |
143 | src = ZPROP_SRC_LOCAL; | |
144 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, version, src); | |
145 | ||
146 | if (spa->spa_root != NULL) | |
147 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, | |
148 | 0, ZPROP_SRC_LOCAL); | |
149 | ||
b128c09f BB |
150 | if ((dp = list_head(&spa->spa_config_list)) != NULL) { |
151 | if (dp->scd_path == NULL) { | |
34dc7c2f | 152 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f BB |
153 | "none", 0, ZPROP_SRC_LOCAL); |
154 | } else if (strcmp(dp->scd_path, spa_config_path) != 0) { | |
34dc7c2f | 155 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f | 156 | dp->scd_path, 0, ZPROP_SRC_LOCAL); |
34dc7c2f BB |
157 | } |
158 | } | |
159 | } | |
160 | ||
161 | /* | |
162 | * Get zpool property values. | |
163 | */ | |
164 | int | |
165 | spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
166 | { | |
167 | zap_cursor_t zc; | |
168 | zap_attribute_t za; | |
169 | objset_t *mos = spa->spa_meta_objset; | |
170 | int err; | |
171 | ||
172 | VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
173 | ||
b128c09f BB |
174 | mutex_enter(&spa->spa_props_lock); |
175 | ||
34dc7c2f BB |
176 | /* |
177 | * Get properties from the spa config. | |
178 | */ | |
179 | spa_prop_get_config(spa, nvp); | |
180 | ||
34dc7c2f BB |
181 | /* If no pool property object, no more prop to get. */ |
182 | if (spa->spa_pool_props_object == 0) { | |
183 | mutex_exit(&spa->spa_props_lock); | |
184 | return (0); | |
185 | } | |
186 | ||
187 | /* | |
188 | * Get properties from the MOS pool property object. | |
189 | */ | |
190 | for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
191 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
192 | zap_cursor_advance(&zc)) { | |
193 | uint64_t intval = 0; | |
194 | char *strval = NULL; | |
195 | zprop_source_t src = ZPROP_SRC_DEFAULT; | |
196 | zpool_prop_t prop; | |
197 | ||
198 | if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL) | |
199 | continue; | |
200 | ||
201 | switch (za.za_integer_length) { | |
202 | case 8: | |
203 | /* integer property */ | |
204 | if (za.za_first_integer != | |
205 | zpool_prop_default_numeric(prop)) | |
206 | src = ZPROP_SRC_LOCAL; | |
207 | ||
208 | if (prop == ZPOOL_PROP_BOOTFS) { | |
209 | dsl_pool_t *dp; | |
210 | dsl_dataset_t *ds = NULL; | |
211 | ||
212 | dp = spa_get_dsl(spa); | |
213 | rw_enter(&dp->dp_config_rwlock, RW_READER); | |
b128c09f BB |
214 | if (err = dsl_dataset_hold_obj(dp, |
215 | za.za_first_integer, FTAG, &ds)) { | |
34dc7c2f BB |
216 | rw_exit(&dp->dp_config_rwlock); |
217 | break; | |
218 | } | |
219 | ||
220 | strval = kmem_alloc( | |
221 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, | |
222 | KM_SLEEP); | |
223 | dsl_dataset_name(ds, strval); | |
b128c09f | 224 | dsl_dataset_rele(ds, FTAG); |
34dc7c2f BB |
225 | rw_exit(&dp->dp_config_rwlock); |
226 | } else { | |
227 | strval = NULL; | |
228 | intval = za.za_first_integer; | |
229 | } | |
230 | ||
231 | spa_prop_add_list(*nvp, prop, strval, intval, src); | |
232 | ||
233 | if (strval != NULL) | |
234 | kmem_free(strval, | |
235 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); | |
236 | ||
237 | break; | |
238 | ||
239 | case 1: | |
240 | /* string property */ | |
241 | strval = kmem_alloc(za.za_num_integers, KM_SLEEP); | |
242 | err = zap_lookup(mos, spa->spa_pool_props_object, | |
243 | za.za_name, 1, za.za_num_integers, strval); | |
244 | if (err) { | |
245 | kmem_free(strval, za.za_num_integers); | |
246 | break; | |
247 | } | |
248 | spa_prop_add_list(*nvp, prop, strval, 0, src); | |
249 | kmem_free(strval, za.za_num_integers); | |
250 | break; | |
251 | ||
252 | default: | |
253 | break; | |
254 | } | |
255 | } | |
256 | zap_cursor_fini(&zc); | |
257 | mutex_exit(&spa->spa_props_lock); | |
258 | out: | |
259 | if (err && err != ENOENT) { | |
260 | nvlist_free(*nvp); | |
261 | *nvp = NULL; | |
262 | return (err); | |
263 | } | |
264 | ||
265 | return (0); | |
266 | } | |
267 | ||
268 | /* | |
269 | * Validate the given pool properties nvlist and modify the list | |
270 | * for the property values to be set. | |
271 | */ | |
272 | static int | |
273 | spa_prop_validate(spa_t *spa, nvlist_t *props) | |
274 | { | |
275 | nvpair_t *elem; | |
276 | int error = 0, reset_bootfs = 0; | |
277 | uint64_t objnum; | |
278 | ||
279 | elem = NULL; | |
280 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
281 | zpool_prop_t prop; | |
282 | char *propname, *strval; | |
283 | uint64_t intval; | |
34dc7c2f BB |
284 | objset_t *os; |
285 | char *slash; | |
286 | ||
287 | propname = nvpair_name(elem); | |
288 | ||
289 | if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL) | |
290 | return (EINVAL); | |
291 | ||
292 | switch (prop) { | |
293 | case ZPOOL_PROP_VERSION: | |
294 | error = nvpair_value_uint64(elem, &intval); | |
295 | if (!error && | |
296 | (intval < spa_version(spa) || intval > SPA_VERSION)) | |
297 | error = EINVAL; | |
298 | break; | |
299 | ||
300 | case ZPOOL_PROP_DELEGATION: | |
301 | case ZPOOL_PROP_AUTOREPLACE: | |
b128c09f | 302 | case ZPOOL_PROP_LISTSNAPS: |
34dc7c2f BB |
303 | error = nvpair_value_uint64(elem, &intval); |
304 | if (!error && intval > 1) | |
305 | error = EINVAL; | |
306 | break; | |
307 | ||
308 | case ZPOOL_PROP_BOOTFS: | |
309 | if (spa_version(spa) < SPA_VERSION_BOOTFS) { | |
310 | error = ENOTSUP; | |
311 | break; | |
312 | } | |
313 | ||
314 | /* | |
b128c09f | 315 | * Make sure the vdev config is bootable |
34dc7c2f | 316 | */ |
b128c09f | 317 | if (!vdev_is_bootable(spa->spa_root_vdev)) { |
34dc7c2f BB |
318 | error = ENOTSUP; |
319 | break; | |
320 | } | |
321 | ||
322 | reset_bootfs = 1; | |
323 | ||
324 | error = nvpair_value_string(elem, &strval); | |
325 | ||
326 | if (!error) { | |
b128c09f BB |
327 | uint64_t compress; |
328 | ||
34dc7c2f BB |
329 | if (strval == NULL || strval[0] == '\0') { |
330 | objnum = zpool_prop_default_numeric( | |
331 | ZPOOL_PROP_BOOTFS); | |
332 | break; | |
333 | } | |
334 | ||
335 | if (error = dmu_objset_open(strval, DMU_OST_ZFS, | |
b128c09f | 336 | DS_MODE_USER | DS_MODE_READONLY, &os)) |
34dc7c2f | 337 | break; |
b128c09f BB |
338 | |
339 | /* We don't support gzip bootable datasets */ | |
340 | if ((error = dsl_prop_get_integer(strval, | |
341 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), | |
342 | &compress, NULL)) == 0 && | |
343 | !BOOTFS_COMPRESS_VALID(compress)) { | |
344 | error = ENOTSUP; | |
345 | } else { | |
346 | objnum = dmu_objset_id(os); | |
347 | } | |
34dc7c2f BB |
348 | dmu_objset_close(os); |
349 | } | |
350 | break; | |
b128c09f | 351 | |
34dc7c2f BB |
352 | case ZPOOL_PROP_FAILUREMODE: |
353 | error = nvpair_value_uint64(elem, &intval); | |
354 | if (!error && (intval < ZIO_FAILURE_MODE_WAIT || | |
355 | intval > ZIO_FAILURE_MODE_PANIC)) | |
356 | error = EINVAL; | |
357 | ||
358 | /* | |
359 | * This is a special case which only occurs when | |
360 | * the pool has completely failed. This allows | |
361 | * the user to change the in-core failmode property | |
362 | * without syncing it out to disk (I/Os might | |
363 | * currently be blocked). We do this by returning | |
364 | * EIO to the caller (spa_prop_set) to trick it | |
365 | * into thinking we encountered a property validation | |
366 | * error. | |
367 | */ | |
b128c09f | 368 | if (!error && spa_suspended(spa)) { |
34dc7c2f BB |
369 | spa->spa_failmode = intval; |
370 | error = EIO; | |
371 | } | |
372 | break; | |
373 | ||
374 | case ZPOOL_PROP_CACHEFILE: | |
375 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
376 | break; | |
377 | ||
378 | if (strval[0] == '\0') | |
379 | break; | |
380 | ||
381 | if (strcmp(strval, "none") == 0) | |
382 | break; | |
383 | ||
384 | if (strval[0] != '/') { | |
385 | error = EINVAL; | |
386 | break; | |
387 | } | |
388 | ||
389 | slash = strrchr(strval, '/'); | |
390 | ASSERT(slash != NULL); | |
391 | ||
392 | if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
393 | strcmp(slash, "/..") == 0) | |
394 | error = EINVAL; | |
395 | break; | |
396 | } | |
397 | ||
398 | if (error) | |
399 | break; | |
400 | } | |
401 | ||
402 | if (!error && reset_bootfs) { | |
403 | error = nvlist_remove(props, | |
404 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
405 | ||
406 | if (!error) { | |
407 | error = nvlist_add_uint64(props, | |
408 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
409 | } | |
410 | } | |
411 | ||
412 | return (error); | |
413 | } | |
414 | ||
415 | int | |
416 | spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
417 | { | |
418 | int error; | |
419 | ||
420 | if ((error = spa_prop_validate(spa, nvp)) != 0) | |
421 | return (error); | |
422 | ||
423 | return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props, | |
424 | spa, nvp, 3)); | |
425 | } | |
426 | ||
427 | /* | |
428 | * If the bootfs property value is dsobj, clear it. | |
429 | */ | |
430 | void | |
431 | spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
432 | { | |
433 | if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
434 | VERIFY(zap_remove(spa->spa_meta_objset, | |
435 | spa->spa_pool_props_object, | |
436 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
437 | spa->spa_bootfs = 0; | |
438 | } | |
439 | } | |
440 | ||
441 | /* | |
442 | * ========================================================================== | |
443 | * SPA state manipulation (open/create/destroy/import/export) | |
444 | * ========================================================================== | |
445 | */ | |
446 | ||
447 | static int | |
448 | spa_error_entry_compare(const void *a, const void *b) | |
449 | { | |
450 | spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
451 | spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
452 | int ret; | |
453 | ||
454 | ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
455 | sizeof (zbookmark_t)); | |
456 | ||
457 | if (ret < 0) | |
458 | return (-1); | |
459 | else if (ret > 0) | |
460 | return (1); | |
461 | else | |
462 | return (0); | |
463 | } | |
464 | ||
465 | /* | |
466 | * Utility function which retrieves copies of the current logs and | |
467 | * re-initializes them in the process. | |
468 | */ | |
469 | void | |
470 | spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
471 | { | |
472 | ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
473 | ||
474 | bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
475 | bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
476 | ||
477 | avl_create(&spa->spa_errlist_scrub, | |
478 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
479 | offsetof(spa_error_entry_t, se_avl)); | |
480 | avl_create(&spa->spa_errlist_last, | |
481 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
482 | offsetof(spa_error_entry_t, se_avl)); | |
483 | } | |
484 | ||
485 | /* | |
486 | * Activate an uninitialized pool. | |
487 | */ | |
488 | static void | |
fb5f0bc8 | 489 | spa_activate(spa_t *spa, int mode) |
34dc7c2f | 490 | { |
34dc7c2f BB |
491 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); |
492 | ||
493 | spa->spa_state = POOL_STATE_ACTIVE; | |
fb5f0bc8 | 494 | spa->spa_mode = mode; |
34dc7c2f BB |
495 | |
496 | spa->spa_normal_class = metaslab_class_create(); | |
497 | spa->spa_log_class = metaslab_class_create(); | |
498 | ||
b128c09f BB |
499 | for (int t = 0; t < ZIO_TYPES; t++) { |
500 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
501 | spa->spa_zio_taskq[t][q] = taskq_create("spa_zio", | |
502 | zio_taskq_threads[t][q], maxclsyspri, 50, | |
503 | INT_MAX, TASKQ_PREPOPULATE); | |
504 | } | |
34dc7c2f BB |
505 | } |
506 | ||
b128c09f BB |
507 | list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), |
508 | offsetof(vdev_t, vdev_config_dirty_node)); | |
509 | list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), | |
510 | offsetof(vdev_t, vdev_state_dirty_node)); | |
34dc7c2f BB |
511 | |
512 | txg_list_create(&spa->spa_vdev_txg_list, | |
513 | offsetof(struct vdev, vdev_txg_node)); | |
514 | ||
515 | avl_create(&spa->spa_errlist_scrub, | |
516 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
517 | offsetof(spa_error_entry_t, se_avl)); | |
518 | avl_create(&spa->spa_errlist_last, | |
519 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
520 | offsetof(spa_error_entry_t, se_avl)); | |
521 | } | |
522 | ||
523 | /* | |
524 | * Opposite of spa_activate(). | |
525 | */ | |
526 | static void | |
527 | spa_deactivate(spa_t *spa) | |
528 | { | |
34dc7c2f BB |
529 | ASSERT(spa->spa_sync_on == B_FALSE); |
530 | ASSERT(spa->spa_dsl_pool == NULL); | |
531 | ASSERT(spa->spa_root_vdev == NULL); | |
532 | ||
533 | ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); | |
534 | ||
535 | txg_list_destroy(&spa->spa_vdev_txg_list); | |
536 | ||
b128c09f BB |
537 | list_destroy(&spa->spa_config_dirty_list); |
538 | list_destroy(&spa->spa_state_dirty_list); | |
34dc7c2f | 539 | |
b128c09f BB |
540 | for (int t = 0; t < ZIO_TYPES; t++) { |
541 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
542 | taskq_destroy(spa->spa_zio_taskq[t][q]); | |
543 | spa->spa_zio_taskq[t][q] = NULL; | |
544 | } | |
34dc7c2f BB |
545 | } |
546 | ||
547 | metaslab_class_destroy(spa->spa_normal_class); | |
548 | spa->spa_normal_class = NULL; | |
549 | ||
550 | metaslab_class_destroy(spa->spa_log_class); | |
551 | spa->spa_log_class = NULL; | |
552 | ||
553 | /* | |
554 | * If this was part of an import or the open otherwise failed, we may | |
555 | * still have errors left in the queues. Empty them just in case. | |
556 | */ | |
557 | spa_errlog_drain(spa); | |
558 | ||
559 | avl_destroy(&spa->spa_errlist_scrub); | |
560 | avl_destroy(&spa->spa_errlist_last); | |
561 | ||
562 | spa->spa_state = POOL_STATE_UNINITIALIZED; | |
563 | } | |
564 | ||
565 | /* | |
566 | * Verify a pool configuration, and construct the vdev tree appropriately. This | |
567 | * will create all the necessary vdevs in the appropriate layout, with each vdev | |
568 | * in the CLOSED state. This will prep the pool before open/creation/import. | |
569 | * All vdev validation is done by the vdev_alloc() routine. | |
570 | */ | |
571 | static int | |
572 | spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
573 | uint_t id, int atype) | |
574 | { | |
575 | nvlist_t **child; | |
576 | uint_t c, children; | |
577 | int error; | |
578 | ||
579 | if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
580 | return (error); | |
581 | ||
582 | if ((*vdp)->vdev_ops->vdev_op_leaf) | |
583 | return (0); | |
584 | ||
b128c09f BB |
585 | error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
586 | &child, &children); | |
587 | ||
588 | if (error == ENOENT) | |
589 | return (0); | |
590 | ||
591 | if (error) { | |
34dc7c2f BB |
592 | vdev_free(*vdp); |
593 | *vdp = NULL; | |
594 | return (EINVAL); | |
595 | } | |
596 | ||
597 | for (c = 0; c < children; c++) { | |
598 | vdev_t *vd; | |
599 | if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
600 | atype)) != 0) { | |
601 | vdev_free(*vdp); | |
602 | *vdp = NULL; | |
603 | return (error); | |
604 | } | |
605 | } | |
606 | ||
607 | ASSERT(*vdp != NULL); | |
608 | ||
609 | return (0); | |
610 | } | |
611 | ||
612 | /* | |
613 | * Opposite of spa_load(). | |
614 | */ | |
615 | static void | |
616 | spa_unload(spa_t *spa) | |
617 | { | |
618 | int i; | |
619 | ||
b128c09f BB |
620 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
621 | ||
34dc7c2f BB |
622 | /* |
623 | * Stop async tasks. | |
624 | */ | |
625 | spa_async_suspend(spa); | |
626 | ||
627 | /* | |
628 | * Stop syncing. | |
629 | */ | |
630 | if (spa->spa_sync_on) { | |
631 | txg_sync_stop(spa->spa_dsl_pool); | |
632 | spa->spa_sync_on = B_FALSE; | |
633 | } | |
634 | ||
635 | /* | |
b128c09f | 636 | * Wait for any outstanding async I/O to complete. |
34dc7c2f | 637 | */ |
b128c09f BB |
638 | mutex_enter(&spa->spa_async_root_lock); |
639 | while (spa->spa_async_root_count != 0) | |
640 | cv_wait(&spa->spa_async_root_cv, &spa->spa_async_root_lock); | |
641 | mutex_exit(&spa->spa_async_root_lock); | |
34dc7c2f | 642 | |
34dc7c2f BB |
643 | /* |
644 | * Close the dsl pool. | |
645 | */ | |
646 | if (spa->spa_dsl_pool) { | |
647 | dsl_pool_close(spa->spa_dsl_pool); | |
648 | spa->spa_dsl_pool = NULL; | |
649 | } | |
650 | ||
fb5f0bc8 BB |
651 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
652 | ||
653 | /* | |
654 | * Drop and purge level 2 cache | |
655 | */ | |
656 | spa_l2cache_drop(spa); | |
657 | ||
34dc7c2f BB |
658 | /* |
659 | * Close all vdevs. | |
660 | */ | |
661 | if (spa->spa_root_vdev) | |
662 | vdev_free(spa->spa_root_vdev); | |
663 | ASSERT(spa->spa_root_vdev == NULL); | |
664 | ||
665 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
666 | vdev_free(spa->spa_spares.sav_vdevs[i]); | |
667 | if (spa->spa_spares.sav_vdevs) { | |
668 | kmem_free(spa->spa_spares.sav_vdevs, | |
669 | spa->spa_spares.sav_count * sizeof (void *)); | |
670 | spa->spa_spares.sav_vdevs = NULL; | |
671 | } | |
672 | if (spa->spa_spares.sav_config) { | |
673 | nvlist_free(spa->spa_spares.sav_config); | |
674 | spa->spa_spares.sav_config = NULL; | |
675 | } | |
b128c09f | 676 | spa->spa_spares.sav_count = 0; |
34dc7c2f BB |
677 | |
678 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) | |
679 | vdev_free(spa->spa_l2cache.sav_vdevs[i]); | |
680 | if (spa->spa_l2cache.sav_vdevs) { | |
681 | kmem_free(spa->spa_l2cache.sav_vdevs, | |
682 | spa->spa_l2cache.sav_count * sizeof (void *)); | |
683 | spa->spa_l2cache.sav_vdevs = NULL; | |
684 | } | |
685 | if (spa->spa_l2cache.sav_config) { | |
686 | nvlist_free(spa->spa_l2cache.sav_config); | |
687 | spa->spa_l2cache.sav_config = NULL; | |
688 | } | |
b128c09f | 689 | spa->spa_l2cache.sav_count = 0; |
34dc7c2f BB |
690 | |
691 | spa->spa_async_suspended = 0; | |
fb5f0bc8 BB |
692 | |
693 | spa_config_exit(spa, SCL_ALL, FTAG); | |
34dc7c2f BB |
694 | } |
695 | ||
696 | /* | |
697 | * Load (or re-load) the current list of vdevs describing the active spares for | |
698 | * this pool. When this is called, we have some form of basic information in | |
699 | * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and | |
700 | * then re-generate a more complete list including status information. | |
701 | */ | |
702 | static void | |
703 | spa_load_spares(spa_t *spa) | |
704 | { | |
705 | nvlist_t **spares; | |
706 | uint_t nspares; | |
707 | int i; | |
708 | vdev_t *vd, *tvd; | |
709 | ||
b128c09f BB |
710 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
711 | ||
34dc7c2f BB |
712 | /* |
713 | * First, close and free any existing spare vdevs. | |
714 | */ | |
715 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
716 | vd = spa->spa_spares.sav_vdevs[i]; | |
717 | ||
718 | /* Undo the call to spa_activate() below */ | |
b128c09f BB |
719 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
720 | B_FALSE)) != NULL && tvd->vdev_isspare) | |
34dc7c2f BB |
721 | spa_spare_remove(tvd); |
722 | vdev_close(vd); | |
723 | vdev_free(vd); | |
724 | } | |
725 | ||
726 | if (spa->spa_spares.sav_vdevs) | |
727 | kmem_free(spa->spa_spares.sav_vdevs, | |
728 | spa->spa_spares.sav_count * sizeof (void *)); | |
729 | ||
730 | if (spa->spa_spares.sav_config == NULL) | |
731 | nspares = 0; | |
732 | else | |
733 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
734 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
735 | ||
736 | spa->spa_spares.sav_count = (int)nspares; | |
737 | spa->spa_spares.sav_vdevs = NULL; | |
738 | ||
739 | if (nspares == 0) | |
740 | return; | |
741 | ||
742 | /* | |
743 | * Construct the array of vdevs, opening them to get status in the | |
744 | * process. For each spare, there is potentially two different vdev_t | |
745 | * structures associated with it: one in the list of spares (used only | |
746 | * for basic validation purposes) and one in the active vdev | |
747 | * configuration (if it's spared in). During this phase we open and | |
748 | * validate each vdev on the spare list. If the vdev also exists in the | |
749 | * active configuration, then we also mark this vdev as an active spare. | |
750 | */ | |
751 | spa->spa_spares.sav_vdevs = kmem_alloc(nspares * sizeof (void *), | |
752 | KM_SLEEP); | |
753 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
754 | VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
755 | VDEV_ALLOC_SPARE) == 0); | |
756 | ASSERT(vd != NULL); | |
757 | ||
758 | spa->spa_spares.sav_vdevs[i] = vd; | |
759 | ||
b128c09f BB |
760 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
761 | B_FALSE)) != NULL) { | |
34dc7c2f BB |
762 | if (!tvd->vdev_isspare) |
763 | spa_spare_add(tvd); | |
764 | ||
765 | /* | |
766 | * We only mark the spare active if we were successfully | |
767 | * able to load the vdev. Otherwise, importing a pool | |
768 | * with a bad active spare would result in strange | |
769 | * behavior, because multiple pool would think the spare | |
770 | * is actively in use. | |
771 | * | |
772 | * There is a vulnerability here to an equally bizarre | |
773 | * circumstance, where a dead active spare is later | |
774 | * brought back to life (onlined or otherwise). Given | |
775 | * the rarity of this scenario, and the extra complexity | |
776 | * it adds, we ignore the possibility. | |
777 | */ | |
778 | if (!vdev_is_dead(tvd)) | |
779 | spa_spare_activate(tvd); | |
780 | } | |
781 | ||
b128c09f BB |
782 | vd->vdev_top = vd; |
783 | ||
34dc7c2f BB |
784 | if (vdev_open(vd) != 0) |
785 | continue; | |
786 | ||
34dc7c2f BB |
787 | if (vdev_validate_aux(vd) == 0) |
788 | spa_spare_add(vd); | |
789 | } | |
790 | ||
791 | /* | |
792 | * Recompute the stashed list of spares, with status information | |
793 | * this time. | |
794 | */ | |
795 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
796 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
797 | ||
798 | spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), | |
799 | KM_SLEEP); | |
800 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
801 | spares[i] = vdev_config_generate(spa, | |
802 | spa->spa_spares.sav_vdevs[i], B_TRUE, B_TRUE, B_FALSE); | |
803 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, | |
804 | ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
805 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
806 | nvlist_free(spares[i]); | |
807 | kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); | |
808 | } | |
809 | ||
810 | /* | |
811 | * Load (or re-load) the current list of vdevs describing the active l2cache for | |
812 | * this pool. When this is called, we have some form of basic information in | |
813 | * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
814 | * then re-generate a more complete list including status information. | |
815 | * Devices which are already active have their details maintained, and are | |
816 | * not re-opened. | |
817 | */ | |
818 | static void | |
819 | spa_load_l2cache(spa_t *spa) | |
820 | { | |
821 | nvlist_t **l2cache; | |
822 | uint_t nl2cache; | |
823 | int i, j, oldnvdevs; | |
b128c09f | 824 | uint64_t guid, size; |
34dc7c2f BB |
825 | vdev_t *vd, **oldvdevs, **newvdevs; |
826 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
827 | ||
b128c09f BB |
828 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
829 | ||
34dc7c2f BB |
830 | if (sav->sav_config != NULL) { |
831 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
832 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
833 | newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); | |
834 | } else { | |
835 | nl2cache = 0; | |
836 | } | |
837 | ||
838 | oldvdevs = sav->sav_vdevs; | |
839 | oldnvdevs = sav->sav_count; | |
840 | sav->sav_vdevs = NULL; | |
841 | sav->sav_count = 0; | |
842 | ||
843 | /* | |
844 | * Process new nvlist of vdevs. | |
845 | */ | |
846 | for (i = 0; i < nl2cache; i++) { | |
847 | VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
848 | &guid) == 0); | |
849 | ||
850 | newvdevs[i] = NULL; | |
851 | for (j = 0; j < oldnvdevs; j++) { | |
852 | vd = oldvdevs[j]; | |
853 | if (vd != NULL && guid == vd->vdev_guid) { | |
854 | /* | |
855 | * Retain previous vdev for add/remove ops. | |
856 | */ | |
857 | newvdevs[i] = vd; | |
858 | oldvdevs[j] = NULL; | |
859 | break; | |
860 | } | |
861 | } | |
862 | ||
863 | if (newvdevs[i] == NULL) { | |
864 | /* | |
865 | * Create new vdev | |
866 | */ | |
867 | VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
868 | VDEV_ALLOC_L2CACHE) == 0); | |
869 | ASSERT(vd != NULL); | |
870 | newvdevs[i] = vd; | |
871 | ||
872 | /* | |
873 | * Commit this vdev as an l2cache device, | |
874 | * even if it fails to open. | |
875 | */ | |
876 | spa_l2cache_add(vd); | |
877 | ||
b128c09f BB |
878 | vd->vdev_top = vd; |
879 | vd->vdev_aux = sav; | |
880 | ||
881 | spa_l2cache_activate(vd); | |
882 | ||
34dc7c2f BB |
883 | if (vdev_open(vd) != 0) |
884 | continue; | |
885 | ||
34dc7c2f BB |
886 | (void) vdev_validate_aux(vd); |
887 | ||
888 | if (!vdev_is_dead(vd)) { | |
34dc7c2f | 889 | size = vdev_get_rsize(vd); |
b128c09f BB |
890 | l2arc_add_vdev(spa, vd, |
891 | VDEV_LABEL_START_SIZE, | |
892 | size - VDEV_LABEL_START_SIZE); | |
34dc7c2f BB |
893 | } |
894 | } | |
895 | } | |
896 | ||
897 | /* | |
898 | * Purge vdevs that were dropped | |
899 | */ | |
900 | for (i = 0; i < oldnvdevs; i++) { | |
901 | uint64_t pool; | |
902 | ||
903 | vd = oldvdevs[i]; | |
904 | if (vd != NULL) { | |
fb5f0bc8 BB |
905 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
906 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 907 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
908 | (void) vdev_close(vd); |
909 | spa_l2cache_remove(vd); | |
910 | } | |
911 | } | |
912 | ||
913 | if (oldvdevs) | |
914 | kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
915 | ||
916 | if (sav->sav_config == NULL) | |
917 | goto out; | |
918 | ||
919 | sav->sav_vdevs = newvdevs; | |
920 | sav->sav_count = (int)nl2cache; | |
921 | ||
922 | /* | |
923 | * Recompute the stashed list of l2cache devices, with status | |
924 | * information this time. | |
925 | */ | |
926 | VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
927 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
928 | ||
929 | l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); | |
930 | for (i = 0; i < sav->sav_count; i++) | |
931 | l2cache[i] = vdev_config_generate(spa, | |
932 | sav->sav_vdevs[i], B_TRUE, B_FALSE, B_TRUE); | |
933 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
934 | ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
935 | out: | |
936 | for (i = 0; i < sav->sav_count; i++) | |
937 | nvlist_free(l2cache[i]); | |
938 | if (sav->sav_count) | |
939 | kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
940 | } | |
941 | ||
942 | static int | |
943 | load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
944 | { | |
945 | dmu_buf_t *db; | |
946 | char *packed = NULL; | |
947 | size_t nvsize = 0; | |
948 | int error; | |
949 | *value = NULL; | |
950 | ||
951 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
952 | nvsize = *(uint64_t *)db->db_data; | |
953 | dmu_buf_rele(db, FTAG); | |
954 | ||
955 | packed = kmem_alloc(nvsize, KM_SLEEP); | |
956 | error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed); | |
957 | if (error == 0) | |
958 | error = nvlist_unpack(packed, nvsize, value, 0); | |
959 | kmem_free(packed, nvsize); | |
960 | ||
961 | return (error); | |
962 | } | |
963 | ||
964 | /* | |
965 | * Checks to see if the given vdev could not be opened, in which case we post a | |
966 | * sysevent to notify the autoreplace code that the device has been removed. | |
967 | */ | |
968 | static void | |
969 | spa_check_removed(vdev_t *vd) | |
970 | { | |
971 | int c; | |
972 | ||
973 | for (c = 0; c < vd->vdev_children; c++) | |
974 | spa_check_removed(vd->vdev_child[c]); | |
975 | ||
976 | if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd)) { | |
977 | zfs_post_autoreplace(vd->vdev_spa, vd); | |
978 | spa_event_notify(vd->vdev_spa, vd, ESC_ZFS_VDEV_CHECK); | |
979 | } | |
980 | } | |
981 | ||
b128c09f BB |
982 | /* |
983 | * Check for missing log devices | |
984 | */ | |
985 | int | |
986 | spa_check_logs(spa_t *spa) | |
987 | { | |
988 | switch (spa->spa_log_state) { | |
989 | case SPA_LOG_MISSING: | |
990 | /* need to recheck in case slog has been restored */ | |
991 | case SPA_LOG_UNKNOWN: | |
992 | if (dmu_objset_find(spa->spa_name, zil_check_log_chain, NULL, | |
993 | DS_FIND_CHILDREN)) { | |
994 | spa->spa_log_state = SPA_LOG_MISSING; | |
995 | return (1); | |
996 | } | |
997 | break; | |
998 | ||
999 | case SPA_LOG_CLEAR: | |
1000 | (void) dmu_objset_find(spa->spa_name, zil_clear_log_chain, NULL, | |
1001 | DS_FIND_CHILDREN); | |
1002 | break; | |
1003 | } | |
1004 | spa->spa_log_state = SPA_LOG_GOOD; | |
1005 | return (0); | |
1006 | } | |
1007 | ||
34dc7c2f BB |
1008 | /* |
1009 | * Load an existing storage pool, using the pool's builtin spa_config as a | |
1010 | * source of configuration information. | |
1011 | */ | |
1012 | static int | |
1013 | spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig) | |
1014 | { | |
1015 | int error = 0; | |
1016 | nvlist_t *nvroot = NULL; | |
1017 | vdev_t *rvd; | |
1018 | uberblock_t *ub = &spa->spa_uberblock; | |
1019 | uint64_t config_cache_txg = spa->spa_config_txg; | |
1020 | uint64_t pool_guid; | |
1021 | uint64_t version; | |
34dc7c2f | 1022 | uint64_t autoreplace = 0; |
fb5f0bc8 | 1023 | int orig_mode = spa->spa_mode; |
b128c09f BB |
1024 | char *ereport = FM_EREPORT_ZFS_POOL; |
1025 | ||
fb5f0bc8 BB |
1026 | /* |
1027 | * If this is an untrusted config, access the pool in read-only mode. | |
1028 | * This prevents things like resilvering recently removed devices. | |
1029 | */ | |
1030 | if (!mosconfig) | |
1031 | spa->spa_mode = FREAD; | |
1032 | ||
b128c09f | 1033 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
34dc7c2f BB |
1034 | |
1035 | spa->spa_load_state = state; | |
1036 | ||
1037 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) || | |
1038 | nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { | |
1039 | error = EINVAL; | |
1040 | goto out; | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | * Versioning wasn't explicitly added to the label until later, so if | |
1045 | * it's not present treat it as the initial version. | |
1046 | */ | |
1047 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0) | |
1048 | version = SPA_VERSION_INITIAL; | |
1049 | ||
1050 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
1051 | &spa->spa_config_txg); | |
1052 | ||
1053 | if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && | |
1054 | spa_guid_exists(pool_guid, 0)) { | |
1055 | error = EEXIST; | |
1056 | goto out; | |
1057 | } | |
1058 | ||
1059 | spa->spa_load_guid = pool_guid; | |
1060 | ||
1061 | /* | |
1062 | * Parse the configuration into a vdev tree. We explicitly set the | |
1063 | * value that will be returned by spa_version() since parsing the | |
1064 | * configuration requires knowing the version number. | |
1065 | */ | |
b128c09f | 1066 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
1067 | spa->spa_ubsync.ub_version = version; |
1068 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD); | |
b128c09f | 1069 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1070 | |
1071 | if (error != 0) | |
1072 | goto out; | |
1073 | ||
1074 | ASSERT(spa->spa_root_vdev == rvd); | |
1075 | ASSERT(spa_guid(spa) == pool_guid); | |
1076 | ||
1077 | /* | |
1078 | * Try to open all vdevs, loading each label in the process. | |
1079 | */ | |
b128c09f | 1080 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1081 | error = vdev_open(rvd); |
b128c09f | 1082 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1083 | if (error != 0) |
1084 | goto out; | |
1085 | ||
1086 | /* | |
1087 | * Validate the labels for all leaf vdevs. We need to grab the config | |
b128c09f | 1088 | * lock because all label I/O is done with ZIO_FLAG_CONFIG_WRITER. |
34dc7c2f | 1089 | */ |
fb5f0bc8 BB |
1090 | if (mosconfig) { |
1091 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1092 | error = vdev_validate(rvd); | |
1093 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1094 | if (error != 0) | |
1095 | goto out; | |
1096 | } | |
34dc7c2f BB |
1097 | |
1098 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { | |
1099 | error = ENXIO; | |
1100 | goto out; | |
1101 | } | |
1102 | ||
1103 | /* | |
1104 | * Find the best uberblock. | |
1105 | */ | |
b128c09f | 1106 | vdev_uberblock_load(NULL, rvd, ub); |
34dc7c2f BB |
1107 | |
1108 | /* | |
1109 | * If we weren't able to find a single valid uberblock, return failure. | |
1110 | */ | |
1111 | if (ub->ub_txg == 0) { | |
1112 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1113 | VDEV_AUX_CORRUPT_DATA); | |
1114 | error = ENXIO; | |
1115 | goto out; | |
1116 | } | |
1117 | ||
1118 | /* | |
1119 | * If the pool is newer than the code, we can't open it. | |
1120 | */ | |
1121 | if (ub->ub_version > SPA_VERSION) { | |
1122 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1123 | VDEV_AUX_VERSION_NEWER); | |
1124 | error = ENOTSUP; | |
1125 | goto out; | |
1126 | } | |
1127 | ||
1128 | /* | |
1129 | * If the vdev guid sum doesn't match the uberblock, we have an | |
1130 | * incomplete configuration. | |
1131 | */ | |
1132 | if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) { | |
1133 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1134 | VDEV_AUX_BAD_GUID_SUM); | |
1135 | error = ENXIO; | |
1136 | goto out; | |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * Initialize internal SPA structures. | |
1141 | */ | |
1142 | spa->spa_state = POOL_STATE_ACTIVE; | |
1143 | spa->spa_ubsync = spa->spa_uberblock; | |
1144 | spa->spa_first_txg = spa_last_synced_txg(spa) + 1; | |
1145 | error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); | |
1146 | if (error) { | |
1147 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1148 | VDEV_AUX_CORRUPT_DATA); | |
1149 | goto out; | |
1150 | } | |
1151 | spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; | |
1152 | ||
1153 | if (zap_lookup(spa->spa_meta_objset, | |
1154 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
1155 | sizeof (uint64_t), 1, &spa->spa_config_object) != 0) { | |
1156 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1157 | VDEV_AUX_CORRUPT_DATA); | |
1158 | error = EIO; | |
1159 | goto out; | |
1160 | } | |
1161 | ||
1162 | if (!mosconfig) { | |
1163 | nvlist_t *newconfig; | |
1164 | uint64_t hostid; | |
1165 | ||
1166 | if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) { | |
1167 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1168 | VDEV_AUX_CORRUPT_DATA); | |
1169 | error = EIO; | |
1170 | goto out; | |
1171 | } | |
1172 | ||
b128c09f BB |
1173 | if (!spa_is_root(spa) && nvlist_lookup_uint64(newconfig, |
1174 | ZPOOL_CONFIG_HOSTID, &hostid) == 0) { | |
34dc7c2f BB |
1175 | char *hostname; |
1176 | unsigned long myhostid = 0; | |
1177 | ||
1178 | VERIFY(nvlist_lookup_string(newconfig, | |
1179 | ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); | |
1180 | ||
1181 | (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); | |
1182 | if (hostid != 0 && myhostid != 0 && | |
1183 | (unsigned long)hostid != myhostid) { | |
1184 | cmn_err(CE_WARN, "pool '%s' could not be " | |
1185 | "loaded as it was last accessed by " | |
b128c09f | 1186 | "another system (host: %s hostid: 0x%lx). " |
34dc7c2f | 1187 | "See: http://www.sun.com/msg/ZFS-8000-EY", |
b128c09f | 1188 | spa_name(spa), hostname, |
34dc7c2f BB |
1189 | (unsigned long)hostid); |
1190 | error = EBADF; | |
1191 | goto out; | |
1192 | } | |
1193 | } | |
1194 | ||
1195 | spa_config_set(spa, newconfig); | |
1196 | spa_unload(spa); | |
1197 | spa_deactivate(spa); | |
fb5f0bc8 | 1198 | spa_activate(spa, orig_mode); |
34dc7c2f BB |
1199 | |
1200 | return (spa_load(spa, newconfig, state, B_TRUE)); | |
1201 | } | |
1202 | ||
1203 | if (zap_lookup(spa->spa_meta_objset, | |
1204 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
1205 | sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) { | |
1206 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1207 | VDEV_AUX_CORRUPT_DATA); | |
1208 | error = EIO; | |
1209 | goto out; | |
1210 | } | |
1211 | ||
1212 | /* | |
1213 | * Load the bit that tells us to use the new accounting function | |
1214 | * (raid-z deflation). If we have an older pool, this will not | |
1215 | * be present. | |
1216 | */ | |
1217 | error = zap_lookup(spa->spa_meta_objset, | |
1218 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
1219 | sizeof (uint64_t), 1, &spa->spa_deflate); | |
1220 | if (error != 0 && error != ENOENT) { | |
1221 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1222 | VDEV_AUX_CORRUPT_DATA); | |
1223 | error = EIO; | |
1224 | goto out; | |
1225 | } | |
1226 | ||
1227 | /* | |
1228 | * Load the persistent error log. If we have an older pool, this will | |
1229 | * not be present. | |
1230 | */ | |
1231 | error = zap_lookup(spa->spa_meta_objset, | |
1232 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST, | |
1233 | sizeof (uint64_t), 1, &spa->spa_errlog_last); | |
1234 | if (error != 0 && error != ENOENT) { | |
1235 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1236 | VDEV_AUX_CORRUPT_DATA); | |
1237 | error = EIO; | |
1238 | goto out; | |
1239 | } | |
1240 | ||
1241 | error = zap_lookup(spa->spa_meta_objset, | |
1242 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB, | |
1243 | sizeof (uint64_t), 1, &spa->spa_errlog_scrub); | |
1244 | if (error != 0 && error != ENOENT) { | |
1245 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1246 | VDEV_AUX_CORRUPT_DATA); | |
1247 | error = EIO; | |
1248 | goto out; | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * Load the history object. If we have an older pool, this | |
1253 | * will not be present. | |
1254 | */ | |
1255 | error = zap_lookup(spa->spa_meta_objset, | |
1256 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY, | |
1257 | sizeof (uint64_t), 1, &spa->spa_history); | |
1258 | if (error != 0 && error != ENOENT) { | |
1259 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1260 | VDEV_AUX_CORRUPT_DATA); | |
1261 | error = EIO; | |
1262 | goto out; | |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * Load any hot spares for this pool. | |
1267 | */ | |
1268 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
1269 | DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares.sav_object); | |
1270 | if (error != 0 && error != ENOENT) { | |
1271 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1272 | VDEV_AUX_CORRUPT_DATA); | |
1273 | error = EIO; | |
1274 | goto out; | |
1275 | } | |
1276 | if (error == 0) { | |
1277 | ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); | |
1278 | if (load_nvlist(spa, spa->spa_spares.sav_object, | |
1279 | &spa->spa_spares.sav_config) != 0) { | |
1280 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1281 | VDEV_AUX_CORRUPT_DATA); | |
1282 | error = EIO; | |
1283 | goto out; | |
1284 | } | |
1285 | ||
b128c09f | 1286 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1287 | spa_load_spares(spa); |
b128c09f | 1288 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1289 | } |
1290 | ||
1291 | /* | |
1292 | * Load any level 2 ARC devices for this pool. | |
1293 | */ | |
1294 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
1295 | DMU_POOL_L2CACHE, sizeof (uint64_t), 1, | |
1296 | &spa->spa_l2cache.sav_object); | |
1297 | if (error != 0 && error != ENOENT) { | |
1298 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1299 | VDEV_AUX_CORRUPT_DATA); | |
1300 | error = EIO; | |
1301 | goto out; | |
1302 | } | |
1303 | if (error == 0) { | |
1304 | ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); | |
1305 | if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
1306 | &spa->spa_l2cache.sav_config) != 0) { | |
1307 | vdev_set_state(rvd, B_TRUE, | |
1308 | VDEV_STATE_CANT_OPEN, | |
1309 | VDEV_AUX_CORRUPT_DATA); | |
1310 | error = EIO; | |
1311 | goto out; | |
1312 | } | |
1313 | ||
b128c09f | 1314 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1315 | spa_load_l2cache(spa); |
b128c09f BB |
1316 | spa_config_exit(spa, SCL_ALL, FTAG); |
1317 | } | |
1318 | ||
1319 | if (spa_check_logs(spa)) { | |
1320 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1321 | VDEV_AUX_BAD_LOG); | |
1322 | error = ENXIO; | |
1323 | ereport = FM_EREPORT_ZFS_LOG_REPLAY; | |
1324 | goto out; | |
34dc7c2f BB |
1325 | } |
1326 | ||
b128c09f | 1327 | |
34dc7c2f BB |
1328 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
1329 | ||
1330 | error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
1331 | DMU_POOL_PROPS, sizeof (uint64_t), 1, &spa->spa_pool_props_object); | |
1332 | ||
1333 | if (error && error != ENOENT) { | |
1334 | vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1335 | VDEV_AUX_CORRUPT_DATA); | |
1336 | error = EIO; | |
1337 | goto out; | |
1338 | } | |
1339 | ||
1340 | if (error == 0) { | |
1341 | (void) zap_lookup(spa->spa_meta_objset, | |
1342 | spa->spa_pool_props_object, | |
1343 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), | |
1344 | sizeof (uint64_t), 1, &spa->spa_bootfs); | |
1345 | (void) zap_lookup(spa->spa_meta_objset, | |
1346 | spa->spa_pool_props_object, | |
1347 | zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), | |
1348 | sizeof (uint64_t), 1, &autoreplace); | |
1349 | (void) zap_lookup(spa->spa_meta_objset, | |
1350 | spa->spa_pool_props_object, | |
1351 | zpool_prop_to_name(ZPOOL_PROP_DELEGATION), | |
1352 | sizeof (uint64_t), 1, &spa->spa_delegation); | |
1353 | (void) zap_lookup(spa->spa_meta_objset, | |
1354 | spa->spa_pool_props_object, | |
1355 | zpool_prop_to_name(ZPOOL_PROP_FAILUREMODE), | |
1356 | sizeof (uint64_t), 1, &spa->spa_failmode); | |
1357 | } | |
1358 | ||
1359 | /* | |
1360 | * If the 'autoreplace' property is set, then post a resource notifying | |
1361 | * the ZFS DE that it should not issue any faults for unopenable | |
1362 | * devices. We also iterate over the vdevs, and post a sysevent for any | |
1363 | * unopenable vdevs so that the normal autoreplace handler can take | |
1364 | * over. | |
1365 | */ | |
1366 | if (autoreplace && state != SPA_LOAD_TRYIMPORT) | |
1367 | spa_check_removed(spa->spa_root_vdev); | |
1368 | ||
1369 | /* | |
1370 | * Load the vdev state for all toplevel vdevs. | |
1371 | */ | |
1372 | vdev_load(rvd); | |
1373 | ||
1374 | /* | |
1375 | * Propagate the leaf DTLs we just loaded all the way up the tree. | |
1376 | */ | |
b128c09f | 1377 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1378 | vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
b128c09f | 1379 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1380 | |
1381 | /* | |
1382 | * Check the state of the root vdev. If it can't be opened, it | |
1383 | * indicates one or more toplevel vdevs are faulted. | |
1384 | */ | |
1385 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { | |
1386 | error = ENXIO; | |
1387 | goto out; | |
1388 | } | |
1389 | ||
fb5f0bc8 | 1390 | if (spa_writeable(spa)) { |
34dc7c2f BB |
1391 | dmu_tx_t *tx; |
1392 | int need_update = B_FALSE; | |
fb5f0bc8 BB |
1393 | |
1394 | ASSERT(state != SPA_LOAD_TRYIMPORT); | |
34dc7c2f BB |
1395 | |
1396 | /* | |
1397 | * Claim log blocks that haven't been committed yet. | |
1398 | * This must all happen in a single txg. | |
1399 | */ | |
1400 | tx = dmu_tx_create_assigned(spa_get_dsl(spa), | |
1401 | spa_first_txg(spa)); | |
b128c09f | 1402 | (void) dmu_objset_find(spa_name(spa), |
34dc7c2f BB |
1403 | zil_claim, tx, DS_FIND_CHILDREN); |
1404 | dmu_tx_commit(tx); | |
1405 | ||
1406 | spa->spa_sync_on = B_TRUE; | |
1407 | txg_sync_start(spa->spa_dsl_pool); | |
1408 | ||
1409 | /* | |
1410 | * Wait for all claims to sync. | |
1411 | */ | |
1412 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
1413 | ||
1414 | /* | |
1415 | * If the config cache is stale, or we have uninitialized | |
1416 | * metaslabs (see spa_vdev_add()), then update the config. | |
1417 | */ | |
1418 | if (config_cache_txg != spa->spa_config_txg || | |
1419 | state == SPA_LOAD_IMPORT) | |
1420 | need_update = B_TRUE; | |
1421 | ||
fb5f0bc8 | 1422 | for (int c = 0; c < rvd->vdev_children; c++) |
34dc7c2f BB |
1423 | if (rvd->vdev_child[c]->vdev_ms_array == 0) |
1424 | need_update = B_TRUE; | |
1425 | ||
1426 | /* | |
1427 | * Update the config cache asychronously in case we're the | |
1428 | * root pool, in which case the config cache isn't writable yet. | |
1429 | */ | |
1430 | if (need_update) | |
1431 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
fb5f0bc8 BB |
1432 | |
1433 | /* | |
1434 | * Check all DTLs to see if anything needs resilvering. | |
1435 | */ | |
1436 | if (vdev_resilver_needed(rvd, NULL, NULL)) | |
1437 | spa_async_request(spa, SPA_ASYNC_RESILVER); | |
34dc7c2f BB |
1438 | } |
1439 | ||
1440 | error = 0; | |
1441 | out: | |
b128c09f | 1442 | spa->spa_minref = refcount_count(&spa->spa_refcount); |
34dc7c2f | 1443 | if (error && error != EBADF) |
b128c09f | 1444 | zfs_ereport_post(ereport, spa, NULL, NULL, 0, 0); |
34dc7c2f BB |
1445 | spa->spa_load_state = SPA_LOAD_NONE; |
1446 | spa->spa_ena = 0; | |
1447 | ||
1448 | return (error); | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Pool Open/Import | |
1453 | * | |
1454 | * The import case is identical to an open except that the configuration is sent | |
1455 | * down from userland, instead of grabbed from the configuration cache. For the | |
1456 | * case of an open, the pool configuration will exist in the | |
1457 | * POOL_STATE_UNINITIALIZED state. | |
1458 | * | |
1459 | * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
1460 | * the same time open the pool, without having to keep around the spa_t in some | |
1461 | * ambiguous state. | |
1462 | */ | |
1463 | static int | |
1464 | spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config) | |
1465 | { | |
1466 | spa_t *spa; | |
1467 | int error; | |
34dc7c2f BB |
1468 | int locked = B_FALSE; |
1469 | ||
1470 | *spapp = NULL; | |
1471 | ||
1472 | /* | |
1473 | * As disgusting as this is, we need to support recursive calls to this | |
1474 | * function because dsl_dir_open() is called during spa_load(), and ends | |
1475 | * up calling spa_open() again. The real fix is to figure out how to | |
1476 | * avoid dsl_dir_open() calling this in the first place. | |
1477 | */ | |
1478 | if (mutex_owner(&spa_namespace_lock) != curthread) { | |
1479 | mutex_enter(&spa_namespace_lock); | |
1480 | locked = B_TRUE; | |
1481 | } | |
1482 | ||
1483 | if ((spa = spa_lookup(pool)) == NULL) { | |
1484 | if (locked) | |
1485 | mutex_exit(&spa_namespace_lock); | |
1486 | return (ENOENT); | |
1487 | } | |
1488 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) { | |
1489 | ||
fb5f0bc8 | 1490 | spa_activate(spa, spa_mode_global); |
34dc7c2f BB |
1491 | |
1492 | error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE); | |
1493 | ||
1494 | if (error == EBADF) { | |
1495 | /* | |
1496 | * If vdev_validate() returns failure (indicated by | |
1497 | * EBADF), it indicates that one of the vdevs indicates | |
1498 | * that the pool has been exported or destroyed. If | |
1499 | * this is the case, the config cache is out of sync and | |
1500 | * we should remove the pool from the namespace. | |
1501 | */ | |
34dc7c2f BB |
1502 | spa_unload(spa); |
1503 | spa_deactivate(spa); | |
b128c09f | 1504 | spa_config_sync(spa, B_TRUE, B_TRUE); |
34dc7c2f | 1505 | spa_remove(spa); |
34dc7c2f BB |
1506 | if (locked) |
1507 | mutex_exit(&spa_namespace_lock); | |
1508 | return (ENOENT); | |
1509 | } | |
1510 | ||
1511 | if (error) { | |
1512 | /* | |
1513 | * We can't open the pool, but we still have useful | |
1514 | * information: the state of each vdev after the | |
1515 | * attempted vdev_open(). Return this to the user. | |
1516 | */ | |
b128c09f | 1517 | if (config != NULL && spa->spa_root_vdev != NULL) |
34dc7c2f BB |
1518 | *config = spa_config_generate(spa, NULL, -1ULL, |
1519 | B_TRUE); | |
34dc7c2f BB |
1520 | spa_unload(spa); |
1521 | spa_deactivate(spa); | |
1522 | spa->spa_last_open_failed = B_TRUE; | |
1523 | if (locked) | |
1524 | mutex_exit(&spa_namespace_lock); | |
1525 | *spapp = NULL; | |
1526 | return (error); | |
1527 | } else { | |
34dc7c2f BB |
1528 | spa->spa_last_open_failed = B_FALSE; |
1529 | } | |
34dc7c2f BB |
1530 | } |
1531 | ||
1532 | spa_open_ref(spa, tag); | |
1533 | ||
34dc7c2f BB |
1534 | if (locked) |
1535 | mutex_exit(&spa_namespace_lock); | |
1536 | ||
1537 | *spapp = spa; | |
1538 | ||
b128c09f | 1539 | if (config != NULL) |
34dc7c2f | 1540 | *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
1541 | |
1542 | return (0); | |
1543 | } | |
1544 | ||
1545 | int | |
1546 | spa_open(const char *name, spa_t **spapp, void *tag) | |
1547 | { | |
1548 | return (spa_open_common(name, spapp, tag, NULL)); | |
1549 | } | |
1550 | ||
1551 | /* | |
1552 | * Lookup the given spa_t, incrementing the inject count in the process, | |
1553 | * preventing it from being exported or destroyed. | |
1554 | */ | |
1555 | spa_t * | |
1556 | spa_inject_addref(char *name) | |
1557 | { | |
1558 | spa_t *spa; | |
1559 | ||
1560 | mutex_enter(&spa_namespace_lock); | |
1561 | if ((spa = spa_lookup(name)) == NULL) { | |
1562 | mutex_exit(&spa_namespace_lock); | |
1563 | return (NULL); | |
1564 | } | |
1565 | spa->spa_inject_ref++; | |
1566 | mutex_exit(&spa_namespace_lock); | |
1567 | ||
1568 | return (spa); | |
1569 | } | |
1570 | ||
1571 | void | |
1572 | spa_inject_delref(spa_t *spa) | |
1573 | { | |
1574 | mutex_enter(&spa_namespace_lock); | |
1575 | spa->spa_inject_ref--; | |
1576 | mutex_exit(&spa_namespace_lock); | |
1577 | } | |
1578 | ||
1579 | /* | |
1580 | * Add spares device information to the nvlist. | |
1581 | */ | |
1582 | static void | |
1583 | spa_add_spares(spa_t *spa, nvlist_t *config) | |
1584 | { | |
1585 | nvlist_t **spares; | |
1586 | uint_t i, nspares; | |
1587 | nvlist_t *nvroot; | |
1588 | uint64_t guid; | |
1589 | vdev_stat_t *vs; | |
1590 | uint_t vsc; | |
1591 | uint64_t pool; | |
1592 | ||
1593 | if (spa->spa_spares.sav_count == 0) | |
1594 | return; | |
1595 | ||
1596 | VERIFY(nvlist_lookup_nvlist(config, | |
1597 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
1598 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
1599 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1600 | if (nspares != 0) { | |
1601 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
1602 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
1603 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
1604 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1605 | ||
1606 | /* | |
1607 | * Go through and find any spares which have since been | |
1608 | * repurposed as an active spare. If this is the case, update | |
1609 | * their status appropriately. | |
1610 | */ | |
1611 | for (i = 0; i < nspares; i++) { | |
1612 | VERIFY(nvlist_lookup_uint64(spares[i], | |
1613 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
b128c09f BB |
1614 | if (spa_spare_exists(guid, &pool, NULL) && |
1615 | pool != 0ULL) { | |
34dc7c2f BB |
1616 | VERIFY(nvlist_lookup_uint64_array( |
1617 | spares[i], ZPOOL_CONFIG_STATS, | |
1618 | (uint64_t **)&vs, &vsc) == 0); | |
1619 | vs->vs_state = VDEV_STATE_CANT_OPEN; | |
1620 | vs->vs_aux = VDEV_AUX_SPARED; | |
1621 | } | |
1622 | } | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | /* | |
1627 | * Add l2cache device information to the nvlist, including vdev stats. | |
1628 | */ | |
1629 | static void | |
1630 | spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
1631 | { | |
1632 | nvlist_t **l2cache; | |
1633 | uint_t i, j, nl2cache; | |
1634 | nvlist_t *nvroot; | |
1635 | uint64_t guid; | |
1636 | vdev_t *vd; | |
1637 | vdev_stat_t *vs; | |
1638 | uint_t vsc; | |
1639 | ||
1640 | if (spa->spa_l2cache.sav_count == 0) | |
1641 | return; | |
1642 | ||
b128c09f | 1643 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
1644 | |
1645 | VERIFY(nvlist_lookup_nvlist(config, | |
1646 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
1647 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
1648 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1649 | if (nl2cache != 0) { | |
1650 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
1651 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
1652 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
1653 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1654 | ||
1655 | /* | |
1656 | * Update level 2 cache device stats. | |
1657 | */ | |
1658 | ||
1659 | for (i = 0; i < nl2cache; i++) { | |
1660 | VERIFY(nvlist_lookup_uint64(l2cache[i], | |
1661 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
1662 | ||
1663 | vd = NULL; | |
1664 | for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
1665 | if (guid == | |
1666 | spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
1667 | vd = spa->spa_l2cache.sav_vdevs[j]; | |
1668 | break; | |
1669 | } | |
1670 | } | |
1671 | ASSERT(vd != NULL); | |
1672 | ||
1673 | VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
1674 | ZPOOL_CONFIG_STATS, (uint64_t **)&vs, &vsc) == 0); | |
1675 | vdev_get_stats(vd, vs); | |
1676 | } | |
1677 | } | |
1678 | ||
b128c09f | 1679 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
1680 | } |
1681 | ||
1682 | int | |
1683 | spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) | |
1684 | { | |
1685 | int error; | |
1686 | spa_t *spa; | |
1687 | ||
1688 | *config = NULL; | |
1689 | error = spa_open_common(name, &spa, FTAG, config); | |
1690 | ||
1691 | if (spa && *config != NULL) { | |
1692 | VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT, | |
1693 | spa_get_errlog_size(spa)) == 0); | |
1694 | ||
b128c09f BB |
1695 | if (spa_suspended(spa)) |
1696 | VERIFY(nvlist_add_uint64(*config, | |
1697 | ZPOOL_CONFIG_SUSPENDED, spa->spa_failmode) == 0); | |
1698 | ||
34dc7c2f BB |
1699 | spa_add_spares(spa, *config); |
1700 | spa_add_l2cache(spa, *config); | |
1701 | } | |
1702 | ||
1703 | /* | |
1704 | * We want to get the alternate root even for faulted pools, so we cheat | |
1705 | * and call spa_lookup() directly. | |
1706 | */ | |
1707 | if (altroot) { | |
1708 | if (spa == NULL) { | |
1709 | mutex_enter(&spa_namespace_lock); | |
1710 | spa = spa_lookup(name); | |
1711 | if (spa) | |
1712 | spa_altroot(spa, altroot, buflen); | |
1713 | else | |
1714 | altroot[0] = '\0'; | |
1715 | spa = NULL; | |
1716 | mutex_exit(&spa_namespace_lock); | |
1717 | } else { | |
1718 | spa_altroot(spa, altroot, buflen); | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | if (spa != NULL) | |
1723 | spa_close(spa, FTAG); | |
1724 | ||
1725 | return (error); | |
1726 | } | |
1727 | ||
1728 | /* | |
1729 | * Validate that the auxiliary device array is well formed. We must have an | |
1730 | * array of nvlists, each which describes a valid leaf vdev. If this is an | |
1731 | * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
1732 | * specified, as long as they are well-formed. | |
1733 | */ | |
1734 | static int | |
1735 | spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, | |
1736 | spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
1737 | vdev_labeltype_t label) | |
1738 | { | |
1739 | nvlist_t **dev; | |
1740 | uint_t i, ndev; | |
1741 | vdev_t *vd; | |
1742 | int error; | |
1743 | ||
b128c09f BB |
1744 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1745 | ||
34dc7c2f BB |
1746 | /* |
1747 | * It's acceptable to have no devs specified. | |
1748 | */ | |
1749 | if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) | |
1750 | return (0); | |
1751 | ||
1752 | if (ndev == 0) | |
1753 | return (EINVAL); | |
1754 | ||
1755 | /* | |
1756 | * Make sure the pool is formatted with a version that supports this | |
1757 | * device type. | |
1758 | */ | |
1759 | if (spa_version(spa) < version) | |
1760 | return (ENOTSUP); | |
1761 | ||
1762 | /* | |
1763 | * Set the pending device list so we correctly handle device in-use | |
1764 | * checking. | |
1765 | */ | |
1766 | sav->sav_pending = dev; | |
1767 | sav->sav_npending = ndev; | |
1768 | ||
1769 | for (i = 0; i < ndev; i++) { | |
1770 | if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
1771 | mode)) != 0) | |
1772 | goto out; | |
1773 | ||
1774 | if (!vd->vdev_ops->vdev_op_leaf) { | |
1775 | vdev_free(vd); | |
1776 | error = EINVAL; | |
1777 | goto out; | |
1778 | } | |
1779 | ||
1780 | /* | |
b128c09f BB |
1781 | * The L2ARC currently only supports disk devices in |
1782 | * kernel context. For user-level testing, we allow it. | |
34dc7c2f | 1783 | */ |
b128c09f | 1784 | #ifdef _KERNEL |
34dc7c2f BB |
1785 | if ((strcmp(config, ZPOOL_CONFIG_L2CACHE) == 0) && |
1786 | strcmp(vd->vdev_ops->vdev_op_type, VDEV_TYPE_DISK) != 0) { | |
1787 | error = ENOTBLK; | |
1788 | goto out; | |
1789 | } | |
b128c09f | 1790 | #endif |
34dc7c2f BB |
1791 | vd->vdev_top = vd; |
1792 | ||
1793 | if ((error = vdev_open(vd)) == 0 && | |
1794 | (error = vdev_label_init(vd, crtxg, label)) == 0) { | |
1795 | VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
1796 | vd->vdev_guid) == 0); | |
1797 | } | |
1798 | ||
1799 | vdev_free(vd); | |
1800 | ||
1801 | if (error && | |
1802 | (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
1803 | goto out; | |
1804 | else | |
1805 | error = 0; | |
1806 | } | |
1807 | ||
1808 | out: | |
1809 | sav->sav_pending = NULL; | |
1810 | sav->sav_npending = 0; | |
1811 | return (error); | |
1812 | } | |
1813 | ||
1814 | static int | |
1815 | spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
1816 | { | |
1817 | int error; | |
1818 | ||
b128c09f BB |
1819 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1820 | ||
34dc7c2f BB |
1821 | if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, |
1822 | &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
1823 | VDEV_LABEL_SPARE)) != 0) { | |
1824 | return (error); | |
1825 | } | |
1826 | ||
1827 | return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
1828 | &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
1829 | VDEV_LABEL_L2CACHE)); | |
1830 | } | |
1831 | ||
1832 | static void | |
1833 | spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
1834 | const char *config) | |
1835 | { | |
1836 | int i; | |
1837 | ||
1838 | if (sav->sav_config != NULL) { | |
1839 | nvlist_t **olddevs; | |
1840 | uint_t oldndevs; | |
1841 | nvlist_t **newdevs; | |
1842 | ||
1843 | /* | |
1844 | * Generate new dev list by concatentating with the | |
1845 | * current dev list. | |
1846 | */ | |
1847 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
1848 | &olddevs, &oldndevs) == 0); | |
1849 | ||
1850 | newdevs = kmem_alloc(sizeof (void *) * | |
1851 | (ndevs + oldndevs), KM_SLEEP); | |
1852 | for (i = 0; i < oldndevs; i++) | |
1853 | VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
1854 | KM_SLEEP) == 0); | |
1855 | for (i = 0; i < ndevs; i++) | |
1856 | VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
1857 | KM_SLEEP) == 0); | |
1858 | ||
1859 | VERIFY(nvlist_remove(sav->sav_config, config, | |
1860 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1861 | ||
1862 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
1863 | config, newdevs, ndevs + oldndevs) == 0); | |
1864 | for (i = 0; i < oldndevs + ndevs; i++) | |
1865 | nvlist_free(newdevs[i]); | |
1866 | kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
1867 | } else { | |
1868 | /* | |
1869 | * Generate a new dev list. | |
1870 | */ | |
1871 | VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
1872 | KM_SLEEP) == 0); | |
1873 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, | |
1874 | devs, ndevs) == 0); | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | /* | |
1879 | * Stop and drop level 2 ARC devices | |
1880 | */ | |
1881 | void | |
1882 | spa_l2cache_drop(spa_t *spa) | |
1883 | { | |
1884 | vdev_t *vd; | |
1885 | int i; | |
1886 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
1887 | ||
1888 | for (i = 0; i < sav->sav_count; i++) { | |
1889 | uint64_t pool; | |
1890 | ||
1891 | vd = sav->sav_vdevs[i]; | |
1892 | ASSERT(vd != NULL); | |
1893 | ||
fb5f0bc8 BB |
1894 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
1895 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 1896 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
1897 | if (vd->vdev_isl2cache) |
1898 | spa_l2cache_remove(vd); | |
1899 | vdev_clear_stats(vd); | |
1900 | (void) vdev_close(vd); | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | /* | |
1905 | * Pool Creation | |
1906 | */ | |
1907 | int | |
1908 | spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, | |
b128c09f | 1909 | const char *history_str, nvlist_t *zplprops) |
34dc7c2f BB |
1910 | { |
1911 | spa_t *spa; | |
1912 | char *altroot = NULL; | |
1913 | vdev_t *rvd; | |
1914 | dsl_pool_t *dp; | |
1915 | dmu_tx_t *tx; | |
1916 | int c, error = 0; | |
1917 | uint64_t txg = TXG_INITIAL; | |
1918 | nvlist_t **spares, **l2cache; | |
1919 | uint_t nspares, nl2cache; | |
1920 | uint64_t version; | |
1921 | ||
1922 | /* | |
1923 | * If this pool already exists, return failure. | |
1924 | */ | |
1925 | mutex_enter(&spa_namespace_lock); | |
1926 | if (spa_lookup(pool) != NULL) { | |
1927 | mutex_exit(&spa_namespace_lock); | |
1928 | return (EEXIST); | |
1929 | } | |
1930 | ||
1931 | /* | |
1932 | * Allocate a new spa_t structure. | |
1933 | */ | |
1934 | (void) nvlist_lookup_string(props, | |
1935 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
1936 | spa = spa_add(pool, altroot); | |
fb5f0bc8 | 1937 | spa_activate(spa, spa_mode_global); |
34dc7c2f BB |
1938 | |
1939 | spa->spa_uberblock.ub_txg = txg - 1; | |
1940 | ||
1941 | if (props && (error = spa_prop_validate(spa, props))) { | |
1942 | spa_unload(spa); | |
1943 | spa_deactivate(spa); | |
1944 | spa_remove(spa); | |
b128c09f | 1945 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
1946 | return (error); |
1947 | } | |
1948 | ||
1949 | if (nvlist_lookup_uint64(props, zpool_prop_to_name(ZPOOL_PROP_VERSION), | |
1950 | &version) != 0) | |
1951 | version = SPA_VERSION; | |
1952 | ASSERT(version <= SPA_VERSION); | |
1953 | spa->spa_uberblock.ub_version = version; | |
1954 | spa->spa_ubsync = spa->spa_uberblock; | |
1955 | ||
1956 | /* | |
1957 | * Create the root vdev. | |
1958 | */ | |
b128c09f | 1959 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
1960 | |
1961 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); | |
1962 | ||
1963 | ASSERT(error != 0 || rvd != NULL); | |
1964 | ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
1965 | ||
1966 | if (error == 0 && !zfs_allocatable_devs(nvroot)) | |
1967 | error = EINVAL; | |
1968 | ||
1969 | if (error == 0 && | |
1970 | (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
1971 | (error = spa_validate_aux(spa, nvroot, txg, | |
1972 | VDEV_ALLOC_ADD)) == 0) { | |
1973 | for (c = 0; c < rvd->vdev_children; c++) | |
1974 | vdev_init(rvd->vdev_child[c], txg); | |
1975 | vdev_config_dirty(rvd); | |
1976 | } | |
1977 | ||
b128c09f | 1978 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1979 | |
1980 | if (error != 0) { | |
1981 | spa_unload(spa); | |
1982 | spa_deactivate(spa); | |
1983 | spa_remove(spa); | |
1984 | mutex_exit(&spa_namespace_lock); | |
1985 | return (error); | |
1986 | } | |
1987 | ||
1988 | /* | |
1989 | * Get the list of spares, if specified. | |
1990 | */ | |
1991 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
1992 | &spares, &nspares) == 0) { | |
1993 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, | |
1994 | KM_SLEEP) == 0); | |
1995 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, | |
1996 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 1997 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1998 | spa_load_spares(spa); |
b128c09f | 1999 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2000 | spa->spa_spares.sav_sync = B_TRUE; |
2001 | } | |
2002 | ||
2003 | /* | |
2004 | * Get the list of level 2 cache devices, if specified. | |
2005 | */ | |
2006 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
2007 | &l2cache, &nl2cache) == 0) { | |
2008 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
2009 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2010 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, | |
2011 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 2012 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2013 | spa_load_l2cache(spa); |
b128c09f | 2014 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2015 | spa->spa_l2cache.sav_sync = B_TRUE; |
2016 | } | |
2017 | ||
b128c09f | 2018 | spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, txg); |
34dc7c2f BB |
2019 | spa->spa_meta_objset = dp->dp_meta_objset; |
2020 | ||
2021 | tx = dmu_tx_create_assigned(dp, txg); | |
2022 | ||
2023 | /* | |
2024 | * Create the pool config object. | |
2025 | */ | |
2026 | spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
b128c09f | 2027 | DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, |
34dc7c2f BB |
2028 | DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); |
2029 | ||
2030 | if (zap_add(spa->spa_meta_objset, | |
2031 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
2032 | sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { | |
2033 | cmn_err(CE_PANIC, "failed to add pool config"); | |
2034 | } | |
2035 | ||
2036 | /* Newly created pools with the right version are always deflated. */ | |
2037 | if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
2038 | spa->spa_deflate = TRUE; | |
2039 | if (zap_add(spa->spa_meta_objset, | |
2040 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
2041 | sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
2042 | cmn_err(CE_PANIC, "failed to add deflate"); | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /* | |
2047 | * Create the deferred-free bplist object. Turn off compression | |
2048 | * because sync-to-convergence takes longer if the blocksize | |
2049 | * keeps changing. | |
2050 | */ | |
2051 | spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset, | |
2052 | 1 << 14, tx); | |
2053 | dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj, | |
2054 | ZIO_COMPRESS_OFF, tx); | |
2055 | ||
2056 | if (zap_add(spa->spa_meta_objset, | |
2057 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
2058 | sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) { | |
2059 | cmn_err(CE_PANIC, "failed to add bplist"); | |
2060 | } | |
2061 | ||
2062 | /* | |
2063 | * Create the pool's history object. | |
2064 | */ | |
2065 | if (version >= SPA_VERSION_ZPOOL_HISTORY) | |
2066 | spa_history_create_obj(spa, tx); | |
2067 | ||
2068 | /* | |
2069 | * Set pool properties. | |
2070 | */ | |
2071 | spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
2072 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
2073 | spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); | |
2074 | if (props) | |
2075 | spa_sync_props(spa, props, CRED(), tx); | |
2076 | ||
2077 | dmu_tx_commit(tx); | |
2078 | ||
2079 | spa->spa_sync_on = B_TRUE; | |
2080 | txg_sync_start(spa->spa_dsl_pool); | |
2081 | ||
2082 | /* | |
2083 | * We explicitly wait for the first transaction to complete so that our | |
2084 | * bean counters are appropriately updated. | |
2085 | */ | |
2086 | txg_wait_synced(spa->spa_dsl_pool, txg); | |
2087 | ||
b128c09f | 2088 | spa_config_sync(spa, B_FALSE, B_TRUE); |
34dc7c2f BB |
2089 | |
2090 | if (version >= SPA_VERSION_ZPOOL_HISTORY && history_str != NULL) | |
2091 | (void) spa_history_log(spa, history_str, LOG_CMD_POOL_CREATE); | |
2092 | ||
2093 | mutex_exit(&spa_namespace_lock); | |
2094 | ||
b128c09f BB |
2095 | spa->spa_minref = refcount_count(&spa->spa_refcount); |
2096 | ||
34dc7c2f BB |
2097 | return (0); |
2098 | } | |
2099 | ||
2100 | /* | |
2101 | * Import the given pool into the system. We set up the necessary spa_t and | |
2102 | * then call spa_load() to do the dirty work. | |
2103 | */ | |
2104 | static int | |
2105 | spa_import_common(const char *pool, nvlist_t *config, nvlist_t *props, | |
b128c09f | 2106 | boolean_t isroot, boolean_t allowfaulted) |
34dc7c2f BB |
2107 | { |
2108 | spa_t *spa; | |
2109 | char *altroot = NULL; | |
b128c09f | 2110 | int error, loaderr; |
34dc7c2f BB |
2111 | nvlist_t *nvroot; |
2112 | nvlist_t **spares, **l2cache; | |
2113 | uint_t nspares, nl2cache; | |
34dc7c2f BB |
2114 | |
2115 | /* | |
2116 | * If a pool with this name exists, return failure. | |
2117 | */ | |
2118 | mutex_enter(&spa_namespace_lock); | |
b128c09f BB |
2119 | if ((spa = spa_lookup(pool)) != NULL) { |
2120 | if (isroot) { | |
2121 | /* | |
2122 | * Remove the existing root pool from the | |
2123 | * namespace so that we can replace it with | |
2124 | * the correct config we just read in. | |
2125 | */ | |
2126 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
2127 | spa_remove(spa); | |
2128 | } else { | |
2129 | mutex_exit(&spa_namespace_lock); | |
2130 | return (EEXIST); | |
2131 | } | |
34dc7c2f BB |
2132 | } |
2133 | ||
2134 | /* | |
2135 | * Create and initialize the spa structure. | |
2136 | */ | |
2137 | (void) nvlist_lookup_string(props, | |
2138 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
2139 | spa = spa_add(pool, altroot); | |
fb5f0bc8 | 2140 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 2141 | |
b128c09f BB |
2142 | if (allowfaulted) |
2143 | spa->spa_import_faulted = B_TRUE; | |
2144 | spa->spa_is_root = isroot; | |
2145 | ||
34dc7c2f BB |
2146 | /* |
2147 | * Pass off the heavy lifting to spa_load(). | |
b128c09f BB |
2148 | * Pass TRUE for mosconfig (unless this is a root pool) because |
2149 | * the user-supplied config is actually the one to trust when | |
2150 | * doing an import. | |
34dc7c2f | 2151 | */ |
b128c09f | 2152 | loaderr = error = spa_load(spa, config, SPA_LOAD_IMPORT, !isroot); |
34dc7c2f | 2153 | |
b128c09f | 2154 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
2155 | /* |
2156 | * Toss any existing sparelist, as it doesn't have any validity anymore, | |
2157 | * and conflicts with spa_has_spare(). | |
2158 | */ | |
2159 | if (!isroot && spa->spa_spares.sav_config) { | |
2160 | nvlist_free(spa->spa_spares.sav_config); | |
2161 | spa->spa_spares.sav_config = NULL; | |
2162 | spa_load_spares(spa); | |
2163 | } | |
2164 | if (!isroot && spa->spa_l2cache.sav_config) { | |
2165 | nvlist_free(spa->spa_l2cache.sav_config); | |
2166 | spa->spa_l2cache.sav_config = NULL; | |
2167 | spa_load_l2cache(spa); | |
2168 | } | |
2169 | ||
2170 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
2171 | &nvroot) == 0); | |
2172 | if (error == 0) | |
2173 | error = spa_validate_aux(spa, nvroot, -1ULL, VDEV_ALLOC_SPARE); | |
2174 | if (error == 0) | |
2175 | error = spa_validate_aux(spa, nvroot, -1ULL, | |
2176 | VDEV_ALLOC_L2CACHE); | |
b128c09f | 2177 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 2178 | |
fb5f0bc8 BB |
2179 | if (error != 0 || (props && spa_writeable(spa) && |
2180 | (error = spa_prop_set(spa, props)))) { | |
b128c09f BB |
2181 | if (loaderr != 0 && loaderr != EINVAL && allowfaulted) { |
2182 | /* | |
2183 | * If we failed to load the pool, but 'allowfaulted' is | |
2184 | * set, then manually set the config as if the config | |
2185 | * passed in was specified in the cache file. | |
2186 | */ | |
2187 | error = 0; | |
2188 | spa->spa_import_faulted = B_FALSE; | |
2189 | if (spa->spa_config == NULL) | |
2190 | spa->spa_config = spa_config_generate(spa, | |
2191 | NULL, -1ULL, B_TRUE); | |
2192 | spa_unload(spa); | |
2193 | spa_deactivate(spa); | |
2194 | spa_config_sync(spa, B_FALSE, B_TRUE); | |
2195 | } else { | |
2196 | spa_unload(spa); | |
2197 | spa_deactivate(spa); | |
2198 | spa_remove(spa); | |
2199 | } | |
34dc7c2f BB |
2200 | mutex_exit(&spa_namespace_lock); |
2201 | return (error); | |
2202 | } | |
2203 | ||
2204 | /* | |
2205 | * Override any spares and level 2 cache devices as specified by | |
2206 | * the user, as these may have correct device names/devids, etc. | |
2207 | */ | |
2208 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
2209 | &spares, &nspares) == 0) { | |
2210 | if (spa->spa_spares.sav_config) | |
2211 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
2212 | ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
2213 | else | |
2214 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, | |
2215 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2216 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, | |
2217 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 2218 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2219 | spa_load_spares(spa); |
b128c09f | 2220 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2221 | spa->spa_spares.sav_sync = B_TRUE; |
2222 | } | |
2223 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
2224 | &l2cache, &nl2cache) == 0) { | |
2225 | if (spa->spa_l2cache.sav_config) | |
2226 | VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
2227 | ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
2228 | else | |
2229 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
2230 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2231 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, | |
2232 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 2233 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2234 | spa_load_l2cache(spa); |
b128c09f | 2235 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2236 | spa->spa_l2cache.sav_sync = B_TRUE; |
2237 | } | |
2238 | ||
fb5f0bc8 | 2239 | if (spa_writeable(spa)) { |
b128c09f BB |
2240 | /* |
2241 | * Update the config cache to include the newly-imported pool. | |
2242 | */ | |
34dc7c2f | 2243 | spa_config_update_common(spa, SPA_CONFIG_UPDATE_POOL, isroot); |
b128c09f | 2244 | } |
34dc7c2f | 2245 | |
b128c09f | 2246 | spa->spa_import_faulted = B_FALSE; |
34dc7c2f BB |
2247 | mutex_exit(&spa_namespace_lock); |
2248 | ||
2249 | return (0); | |
2250 | } | |
2251 | ||
2252 | #ifdef _KERNEL | |
2253 | /* | |
2254 | * Build a "root" vdev for a top level vdev read in from a rootpool | |
2255 | * device label. | |
2256 | */ | |
2257 | static void | |
2258 | spa_build_rootpool_config(nvlist_t *config) | |
2259 | { | |
2260 | nvlist_t *nvtop, *nvroot; | |
2261 | uint64_t pgid; | |
2262 | ||
2263 | /* | |
2264 | * Add this top-level vdev to the child array. | |
2265 | */ | |
2266 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvtop) | |
2267 | == 0); | |
2268 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pgid) | |
2269 | == 0); | |
2270 | ||
2271 | /* | |
2272 | * Put this pool's top-level vdevs into a root vdev. | |
2273 | */ | |
2274 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2275 | VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) | |
2276 | == 0); | |
2277 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); | |
2278 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); | |
2279 | VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, | |
2280 | &nvtop, 1) == 0); | |
2281 | ||
2282 | /* | |
2283 | * Replace the existing vdev_tree with the new root vdev in | |
2284 | * this pool's configuration (remove the old, add the new). | |
2285 | */ | |
2286 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); | |
2287 | nvlist_free(nvroot); | |
2288 | } | |
2289 | ||
2290 | /* | |
2291 | * Get the root pool information from the root disk, then import the root pool | |
2292 | * during the system boot up time. | |
2293 | */ | |
b128c09f | 2294 | extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **); |
34dc7c2f | 2295 | |
b128c09f BB |
2296 | int |
2297 | spa_check_rootconf(char *devpath, char *devid, nvlist_t **bestconf, | |
34dc7c2f BB |
2298 | uint64_t *besttxg) |
2299 | { | |
2300 | nvlist_t *config; | |
2301 | uint64_t txg; | |
b128c09f | 2302 | int error; |
34dc7c2f | 2303 | |
b128c09f BB |
2304 | if (error = vdev_disk_read_rootlabel(devpath, devid, &config)) |
2305 | return (error); | |
34dc7c2f BB |
2306 | |
2307 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0); | |
2308 | ||
b128c09f | 2309 | if (bestconf != NULL) |
34dc7c2f | 2310 | *bestconf = config; |
b128c09f BB |
2311 | else |
2312 | nvlist_free(config); | |
2313 | *besttxg = txg; | |
2314 | return (0); | |
34dc7c2f BB |
2315 | } |
2316 | ||
2317 | boolean_t | |
2318 | spa_rootdev_validate(nvlist_t *nv) | |
2319 | { | |
2320 | uint64_t ival; | |
2321 | ||
2322 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || | |
2323 | nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || | |
34dc7c2f BB |
2324 | nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) |
2325 | return (B_FALSE); | |
2326 | ||
2327 | return (B_TRUE); | |
2328 | } | |
2329 | ||
b128c09f BB |
2330 | |
2331 | /* | |
2332 | * Given the boot device's physical path or devid, check if the device | |
2333 | * is in a valid state. If so, return the configuration from the vdev | |
2334 | * label. | |
2335 | */ | |
2336 | int | |
2337 | spa_get_rootconf(char *devpath, char *devid, nvlist_t **bestconf) | |
2338 | { | |
2339 | nvlist_t *conf = NULL; | |
2340 | uint64_t txg = 0; | |
2341 | nvlist_t *nvtop, **child; | |
2342 | char *type; | |
2343 | char *bootpath = NULL; | |
2344 | uint_t children, c; | |
2345 | char *tmp; | |
2346 | int error; | |
2347 | ||
2348 | if (devpath && ((tmp = strchr(devpath, ' ')) != NULL)) | |
2349 | *tmp = '\0'; | |
2350 | if (error = spa_check_rootconf(devpath, devid, &conf, &txg)) { | |
2351 | cmn_err(CE_NOTE, "error reading device label"); | |
2352 | return (error); | |
2353 | } | |
2354 | if (txg == 0) { | |
2355 | cmn_err(CE_NOTE, "this device is detached"); | |
2356 | nvlist_free(conf); | |
2357 | return (EINVAL); | |
2358 | } | |
2359 | ||
2360 | VERIFY(nvlist_lookup_nvlist(conf, ZPOOL_CONFIG_VDEV_TREE, | |
2361 | &nvtop) == 0); | |
2362 | VERIFY(nvlist_lookup_string(nvtop, ZPOOL_CONFIG_TYPE, &type) == 0); | |
2363 | ||
2364 | if (strcmp(type, VDEV_TYPE_DISK) == 0) { | |
2365 | if (spa_rootdev_validate(nvtop)) { | |
2366 | goto out; | |
2367 | } else { | |
2368 | nvlist_free(conf); | |
2369 | return (EINVAL); | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | ASSERT(strcmp(type, VDEV_TYPE_MIRROR) == 0); | |
2374 | ||
2375 | VERIFY(nvlist_lookup_nvlist_array(nvtop, ZPOOL_CONFIG_CHILDREN, | |
2376 | &child, &children) == 0); | |
2377 | ||
2378 | /* | |
2379 | * Go thru vdevs in the mirror to see if the given device | |
2380 | * has the most recent txg. Only the device with the most | |
2381 | * recent txg has valid information and should be booted. | |
2382 | */ | |
2383 | for (c = 0; c < children; c++) { | |
2384 | char *cdevid, *cpath; | |
2385 | uint64_t tmptxg; | |
2386 | ||
fb5f0bc8 BB |
2387 | cpath = NULL; |
2388 | cdevid = NULL; | |
b128c09f | 2389 | if (nvlist_lookup_string(child[c], ZPOOL_CONFIG_PHYS_PATH, |
fb5f0bc8 BB |
2390 | &cpath) != 0 && nvlist_lookup_string(child[c], |
2391 | ZPOOL_CONFIG_DEVID, &cdevid) != 0) | |
b128c09f BB |
2392 | return (EINVAL); |
2393 | if ((spa_check_rootconf(cpath, cdevid, NULL, | |
2394 | &tmptxg) == 0) && (tmptxg > txg)) { | |
2395 | txg = tmptxg; | |
2396 | VERIFY(nvlist_lookup_string(child[c], | |
2397 | ZPOOL_CONFIG_PATH, &bootpath) == 0); | |
2398 | } | |
2399 | } | |
2400 | ||
2401 | /* Does the best device match the one we've booted from? */ | |
2402 | if (bootpath) { | |
2403 | cmn_err(CE_NOTE, "try booting from '%s'", bootpath); | |
2404 | return (EINVAL); | |
2405 | } | |
2406 | out: | |
2407 | *bestconf = conf; | |
2408 | return (0); | |
2409 | } | |
2410 | ||
34dc7c2f BB |
2411 | /* |
2412 | * Import a root pool. | |
2413 | * | |
b128c09f BB |
2414 | * For x86. devpath_list will consist of devid and/or physpath name of |
2415 | * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a"). | |
2416 | * The GRUB "findroot" command will return the vdev we should boot. | |
34dc7c2f BB |
2417 | * |
2418 | * For Sparc, devpath_list consists the physpath name of the booting device | |
2419 | * no matter the rootpool is a single device pool or a mirrored pool. | |
2420 | * e.g. | |
2421 | * "/pci@1f,0/ide@d/disk@0,0:a" | |
2422 | */ | |
2423 | int | |
b128c09f | 2424 | spa_import_rootpool(char *devpath, char *devid) |
34dc7c2f BB |
2425 | { |
2426 | nvlist_t *conf = NULL; | |
34dc7c2f BB |
2427 | char *pname; |
2428 | int error; | |
2429 | ||
2430 | /* | |
2431 | * Get the vdev pathname and configuation from the most | |
2432 | * recently updated vdev (highest txg). | |
2433 | */ | |
b128c09f | 2434 | if (error = spa_get_rootconf(devpath, devid, &conf)) |
34dc7c2f BB |
2435 | goto msg_out; |
2436 | ||
2437 | /* | |
2438 | * Add type "root" vdev to the config. | |
2439 | */ | |
2440 | spa_build_rootpool_config(conf); | |
2441 | ||
2442 | VERIFY(nvlist_lookup_string(conf, ZPOOL_CONFIG_POOL_NAME, &pname) == 0); | |
2443 | ||
b128c09f BB |
2444 | /* |
2445 | * We specify 'allowfaulted' for this to be treated like spa_open() | |
2446 | * instead of spa_import(). This prevents us from marking vdevs as | |
2447 | * persistently unavailable, and generates FMA ereports as if it were a | |
2448 | * pool open, not import. | |
2449 | */ | |
2450 | error = spa_import_common(pname, conf, NULL, B_TRUE, B_TRUE); | |
2451 | ASSERT(error != EEXIST); | |
34dc7c2f BB |
2452 | |
2453 | nvlist_free(conf); | |
2454 | return (error); | |
2455 | ||
2456 | msg_out: | |
b128c09f | 2457 | cmn_err(CE_NOTE, "\n" |
34dc7c2f BB |
2458 | " *************************************************** \n" |
2459 | " * This device is not bootable! * \n" | |
2460 | " * It is either offlined or detached or faulted. * \n" | |
2461 | " * Please try to boot from a different device. * \n" | |
b128c09f | 2462 | " *************************************************** "); |
34dc7c2f BB |
2463 | |
2464 | return (error); | |
2465 | } | |
2466 | #endif | |
2467 | ||
2468 | /* | |
2469 | * Import a non-root pool into the system. | |
2470 | */ | |
2471 | int | |
2472 | spa_import(const char *pool, nvlist_t *config, nvlist_t *props) | |
2473 | { | |
b128c09f | 2474 | return (spa_import_common(pool, config, props, B_FALSE, B_FALSE)); |
34dc7c2f BB |
2475 | } |
2476 | ||
b128c09f BB |
2477 | int |
2478 | spa_import_faulted(const char *pool, nvlist_t *config, nvlist_t *props) | |
2479 | { | |
2480 | return (spa_import_common(pool, config, props, B_FALSE, B_TRUE)); | |
2481 | } | |
2482 | ||
2483 | ||
34dc7c2f BB |
2484 | /* |
2485 | * This (illegal) pool name is used when temporarily importing a spa_t in order | |
2486 | * to get the vdev stats associated with the imported devices. | |
2487 | */ | |
2488 | #define TRYIMPORT_NAME "$import" | |
2489 | ||
2490 | nvlist_t * | |
2491 | spa_tryimport(nvlist_t *tryconfig) | |
2492 | { | |
2493 | nvlist_t *config = NULL; | |
2494 | char *poolname; | |
2495 | spa_t *spa; | |
2496 | uint64_t state; | |
2497 | ||
2498 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
2499 | return (NULL); | |
2500 | ||
2501 | if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
2502 | return (NULL); | |
2503 | ||
2504 | /* | |
2505 | * Create and initialize the spa structure. | |
2506 | */ | |
2507 | mutex_enter(&spa_namespace_lock); | |
2508 | spa = spa_add(TRYIMPORT_NAME, NULL); | |
fb5f0bc8 | 2509 | spa_activate(spa, FREAD); |
34dc7c2f BB |
2510 | |
2511 | /* | |
2512 | * Pass off the heavy lifting to spa_load(). | |
2513 | * Pass TRUE for mosconfig because the user-supplied config | |
2514 | * is actually the one to trust when doing an import. | |
2515 | */ | |
2516 | (void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE); | |
2517 | ||
2518 | /* | |
2519 | * If 'tryconfig' was at least parsable, return the current config. | |
2520 | */ | |
2521 | if (spa->spa_root_vdev != NULL) { | |
34dc7c2f | 2522 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
2523 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
2524 | poolname) == 0); | |
2525 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
2526 | state) == 0); | |
2527 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
2528 | spa->spa_uberblock.ub_timestamp) == 0); | |
2529 | ||
2530 | /* | |
2531 | * If the bootfs property exists on this pool then we | |
2532 | * copy it out so that external consumers can tell which | |
2533 | * pools are bootable. | |
2534 | */ | |
2535 | if (spa->spa_bootfs) { | |
2536 | char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
2537 | ||
2538 | /* | |
2539 | * We have to play games with the name since the | |
2540 | * pool was opened as TRYIMPORT_NAME. | |
2541 | */ | |
b128c09f | 2542 | if (dsl_dsobj_to_dsname(spa_name(spa), |
34dc7c2f BB |
2543 | spa->spa_bootfs, tmpname) == 0) { |
2544 | char *cp; | |
2545 | char *dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
2546 | ||
2547 | cp = strchr(tmpname, '/'); | |
2548 | if (cp == NULL) { | |
2549 | (void) strlcpy(dsname, tmpname, | |
2550 | MAXPATHLEN); | |
2551 | } else { | |
2552 | (void) snprintf(dsname, MAXPATHLEN, | |
2553 | "%s/%s", poolname, ++cp); | |
2554 | } | |
2555 | VERIFY(nvlist_add_string(config, | |
2556 | ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
2557 | kmem_free(dsname, MAXPATHLEN); | |
2558 | } | |
2559 | kmem_free(tmpname, MAXPATHLEN); | |
2560 | } | |
2561 | ||
2562 | /* | |
2563 | * Add the list of hot spares and level 2 cache devices. | |
2564 | */ | |
2565 | spa_add_spares(spa, config); | |
2566 | spa_add_l2cache(spa, config); | |
2567 | } | |
2568 | ||
2569 | spa_unload(spa); | |
2570 | spa_deactivate(spa); | |
2571 | spa_remove(spa); | |
2572 | mutex_exit(&spa_namespace_lock); | |
2573 | ||
2574 | return (config); | |
2575 | } | |
2576 | ||
2577 | /* | |
2578 | * Pool export/destroy | |
2579 | * | |
2580 | * The act of destroying or exporting a pool is very simple. We make sure there | |
2581 | * is no more pending I/O and any references to the pool are gone. Then, we | |
2582 | * update the pool state and sync all the labels to disk, removing the | |
fb5f0bc8 BB |
2583 | * configuration from the cache afterwards. If the 'hardforce' flag is set, then |
2584 | * we don't sync the labels or remove the configuration cache. | |
34dc7c2f BB |
2585 | */ |
2586 | static int | |
b128c09f | 2587 | spa_export_common(char *pool, int new_state, nvlist_t **oldconfig, |
fb5f0bc8 | 2588 | boolean_t force, boolean_t hardforce) |
34dc7c2f BB |
2589 | { |
2590 | spa_t *spa; | |
2591 | ||
2592 | if (oldconfig) | |
2593 | *oldconfig = NULL; | |
2594 | ||
fb5f0bc8 | 2595 | if (!(spa_mode_global & FWRITE)) |
34dc7c2f BB |
2596 | return (EROFS); |
2597 | ||
2598 | mutex_enter(&spa_namespace_lock); | |
2599 | if ((spa = spa_lookup(pool)) == NULL) { | |
2600 | mutex_exit(&spa_namespace_lock); | |
2601 | return (ENOENT); | |
2602 | } | |
2603 | ||
2604 | /* | |
2605 | * Put a hold on the pool, drop the namespace lock, stop async tasks, | |
2606 | * reacquire the namespace lock, and see if we can export. | |
2607 | */ | |
2608 | spa_open_ref(spa, FTAG); | |
2609 | mutex_exit(&spa_namespace_lock); | |
2610 | spa_async_suspend(spa); | |
2611 | mutex_enter(&spa_namespace_lock); | |
2612 | spa_close(spa, FTAG); | |
2613 | ||
2614 | /* | |
2615 | * The pool will be in core if it's openable, | |
2616 | * in which case we can modify its state. | |
2617 | */ | |
2618 | if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
2619 | /* | |
2620 | * Objsets may be open only because they're dirty, so we | |
2621 | * have to force it to sync before checking spa_refcnt. | |
2622 | */ | |
34dc7c2f BB |
2623 | txg_wait_synced(spa->spa_dsl_pool, 0); |
2624 | ||
2625 | /* | |
2626 | * A pool cannot be exported or destroyed if there are active | |
2627 | * references. If we are resetting a pool, allow references by | |
2628 | * fault injection handlers. | |
2629 | */ | |
2630 | if (!spa_refcount_zero(spa) || | |
2631 | (spa->spa_inject_ref != 0 && | |
2632 | new_state != POOL_STATE_UNINITIALIZED)) { | |
34dc7c2f BB |
2633 | spa_async_resume(spa); |
2634 | mutex_exit(&spa_namespace_lock); | |
2635 | return (EBUSY); | |
2636 | } | |
2637 | ||
b128c09f BB |
2638 | /* |
2639 | * A pool cannot be exported if it has an active shared spare. | |
2640 | * This is to prevent other pools stealing the active spare | |
2641 | * from an exported pool. At user's own will, such pool can | |
2642 | * be forcedly exported. | |
2643 | */ | |
2644 | if (!force && new_state == POOL_STATE_EXPORTED && | |
2645 | spa_has_active_shared_spare(spa)) { | |
2646 | spa_async_resume(spa); | |
2647 | mutex_exit(&spa_namespace_lock); | |
2648 | return (EXDEV); | |
2649 | } | |
34dc7c2f BB |
2650 | |
2651 | /* | |
2652 | * We want this to be reflected on every label, | |
2653 | * so mark them all dirty. spa_unload() will do the | |
2654 | * final sync that pushes these changes out. | |
2655 | */ | |
fb5f0bc8 | 2656 | if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { |
b128c09f | 2657 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
2658 | spa->spa_state = new_state; |
2659 | spa->spa_final_txg = spa_last_synced_txg(spa) + 1; | |
2660 | vdev_config_dirty(spa->spa_root_vdev); | |
b128c09f | 2661 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2662 | } |
2663 | } | |
2664 | ||
2665 | spa_event_notify(spa, NULL, ESC_ZFS_POOL_DESTROY); | |
2666 | ||
2667 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
2668 | spa_unload(spa); | |
2669 | spa_deactivate(spa); | |
2670 | } | |
2671 | ||
2672 | if (oldconfig && spa->spa_config) | |
2673 | VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); | |
2674 | ||
2675 | if (new_state != POOL_STATE_UNINITIALIZED) { | |
fb5f0bc8 BB |
2676 | if (!hardforce) |
2677 | spa_config_sync(spa, B_TRUE, B_TRUE); | |
34dc7c2f | 2678 | spa_remove(spa); |
34dc7c2f BB |
2679 | } |
2680 | mutex_exit(&spa_namespace_lock); | |
2681 | ||
2682 | return (0); | |
2683 | } | |
2684 | ||
2685 | /* | |
2686 | * Destroy a storage pool. | |
2687 | */ | |
2688 | int | |
2689 | spa_destroy(char *pool) | |
2690 | { | |
fb5f0bc8 BB |
2691 | return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, |
2692 | B_FALSE, B_FALSE)); | |
34dc7c2f BB |
2693 | } |
2694 | ||
2695 | /* | |
2696 | * Export a storage pool. | |
2697 | */ | |
2698 | int | |
fb5f0bc8 BB |
2699 | spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
2700 | boolean_t hardforce) | |
34dc7c2f | 2701 | { |
fb5f0bc8 BB |
2702 | return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, |
2703 | force, hardforce)); | |
34dc7c2f BB |
2704 | } |
2705 | ||
2706 | /* | |
2707 | * Similar to spa_export(), this unloads the spa_t without actually removing it | |
2708 | * from the namespace in any way. | |
2709 | */ | |
2710 | int | |
2711 | spa_reset(char *pool) | |
2712 | { | |
b128c09f | 2713 | return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, |
fb5f0bc8 | 2714 | B_FALSE, B_FALSE)); |
34dc7c2f BB |
2715 | } |
2716 | ||
34dc7c2f BB |
2717 | /* |
2718 | * ========================================================================== | |
2719 | * Device manipulation | |
2720 | * ========================================================================== | |
2721 | */ | |
2722 | ||
2723 | /* | |
2724 | * Add a device to a storage pool. | |
2725 | */ | |
2726 | int | |
2727 | spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
2728 | { | |
2729 | uint64_t txg; | |
fb5f0bc8 | 2730 | int error; |
34dc7c2f BB |
2731 | vdev_t *rvd = spa->spa_root_vdev; |
2732 | vdev_t *vd, *tvd; | |
2733 | nvlist_t **spares, **l2cache; | |
2734 | uint_t nspares, nl2cache; | |
2735 | ||
2736 | txg = spa_vdev_enter(spa); | |
2737 | ||
2738 | if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, | |
2739 | VDEV_ALLOC_ADD)) != 0) | |
2740 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
2741 | ||
b128c09f | 2742 | spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ |
34dc7c2f BB |
2743 | |
2744 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, | |
2745 | &nspares) != 0) | |
2746 | nspares = 0; | |
2747 | ||
2748 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, | |
2749 | &nl2cache) != 0) | |
2750 | nl2cache = 0; | |
2751 | ||
b128c09f | 2752 | if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) |
34dc7c2f | 2753 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
34dc7c2f | 2754 | |
b128c09f BB |
2755 | if (vd->vdev_children != 0 && |
2756 | (error = vdev_create(vd, txg, B_FALSE)) != 0) | |
2757 | return (spa_vdev_exit(spa, vd, txg, error)); | |
34dc7c2f BB |
2758 | |
2759 | /* | |
2760 | * We must validate the spares and l2cache devices after checking the | |
2761 | * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
2762 | */ | |
b128c09f | 2763 | if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) |
34dc7c2f | 2764 | return (spa_vdev_exit(spa, vd, txg, error)); |
34dc7c2f BB |
2765 | |
2766 | /* | |
2767 | * Transfer each new top-level vdev from vd to rvd. | |
2768 | */ | |
fb5f0bc8 | 2769 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
2770 | tvd = vd->vdev_child[c]; |
2771 | vdev_remove_child(vd, tvd); | |
2772 | tvd->vdev_id = rvd->vdev_children; | |
2773 | vdev_add_child(rvd, tvd); | |
2774 | vdev_config_dirty(tvd); | |
2775 | } | |
2776 | ||
2777 | if (nspares != 0) { | |
2778 | spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, | |
2779 | ZPOOL_CONFIG_SPARES); | |
2780 | spa_load_spares(spa); | |
2781 | spa->spa_spares.sav_sync = B_TRUE; | |
2782 | } | |
2783 | ||
2784 | if (nl2cache != 0) { | |
2785 | spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
2786 | ZPOOL_CONFIG_L2CACHE); | |
2787 | spa_load_l2cache(spa); | |
2788 | spa->spa_l2cache.sav_sync = B_TRUE; | |
2789 | } | |
2790 | ||
2791 | /* | |
2792 | * We have to be careful when adding new vdevs to an existing pool. | |
2793 | * If other threads start allocating from these vdevs before we | |
2794 | * sync the config cache, and we lose power, then upon reboot we may | |
2795 | * fail to open the pool because there are DVAs that the config cache | |
2796 | * can't translate. Therefore, we first add the vdevs without | |
2797 | * initializing metaslabs; sync the config cache (via spa_vdev_exit()); | |
2798 | * and then let spa_config_update() initialize the new metaslabs. | |
2799 | * | |
2800 | * spa_load() checks for added-but-not-initialized vdevs, so that | |
2801 | * if we lose power at any point in this sequence, the remaining | |
2802 | * steps will be completed the next time we load the pool. | |
2803 | */ | |
2804 | (void) spa_vdev_exit(spa, vd, txg, 0); | |
2805 | ||
2806 | mutex_enter(&spa_namespace_lock); | |
2807 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
2808 | mutex_exit(&spa_namespace_lock); | |
2809 | ||
2810 | return (0); | |
2811 | } | |
2812 | ||
2813 | /* | |
2814 | * Attach a device to a mirror. The arguments are the path to any device | |
2815 | * in the mirror, and the nvroot for the new device. If the path specifies | |
2816 | * a device that is not mirrored, we automatically insert the mirror vdev. | |
2817 | * | |
2818 | * If 'replacing' is specified, the new device is intended to replace the | |
2819 | * existing device; in this case the two devices are made into their own | |
2820 | * mirror using the 'replacing' vdev, which is functionally identical to | |
2821 | * the mirror vdev (it actually reuses all the same ops) but has a few | |
2822 | * extra rules: you can't attach to it after it's been created, and upon | |
2823 | * completion of resilvering, the first disk (the one being replaced) | |
2824 | * is automatically detached. | |
2825 | */ | |
2826 | int | |
2827 | spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) | |
2828 | { | |
2829 | uint64_t txg, open_txg; | |
34dc7c2f BB |
2830 | vdev_t *rvd = spa->spa_root_vdev; |
2831 | vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
2832 | vdev_ops_t *pvops; | |
b128c09f BB |
2833 | dmu_tx_t *tx; |
2834 | char *oldvdpath, *newvdpath; | |
2835 | int newvd_isspare; | |
2836 | int error; | |
34dc7c2f BB |
2837 | |
2838 | txg = spa_vdev_enter(spa); | |
2839 | ||
b128c09f | 2840 | oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
2841 | |
2842 | if (oldvd == NULL) | |
2843 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
2844 | ||
2845 | if (!oldvd->vdev_ops->vdev_op_leaf) | |
2846 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
2847 | ||
2848 | pvd = oldvd->vdev_parent; | |
2849 | ||
2850 | if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, | |
2851 | VDEV_ALLOC_ADD)) != 0) | |
2852 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
2853 | ||
2854 | if (newrootvd->vdev_children != 1) | |
2855 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
2856 | ||
2857 | newvd = newrootvd->vdev_child[0]; | |
2858 | ||
2859 | if (!newvd->vdev_ops->vdev_op_leaf) | |
2860 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
2861 | ||
2862 | if ((error = vdev_create(newrootvd, txg, replacing)) != 0) | |
2863 | return (spa_vdev_exit(spa, newrootvd, txg, error)); | |
2864 | ||
2865 | /* | |
2866 | * Spares can't replace logs | |
2867 | */ | |
b128c09f | 2868 | if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) |
34dc7c2f BB |
2869 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
2870 | ||
2871 | if (!replacing) { | |
2872 | /* | |
2873 | * For attach, the only allowable parent is a mirror or the root | |
2874 | * vdev. | |
2875 | */ | |
2876 | if (pvd->vdev_ops != &vdev_mirror_ops && | |
2877 | pvd->vdev_ops != &vdev_root_ops) | |
2878 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2879 | ||
2880 | pvops = &vdev_mirror_ops; | |
2881 | } else { | |
2882 | /* | |
2883 | * Active hot spares can only be replaced by inactive hot | |
2884 | * spares. | |
2885 | */ | |
2886 | if (pvd->vdev_ops == &vdev_spare_ops && | |
2887 | pvd->vdev_child[1] == oldvd && | |
2888 | !spa_has_spare(spa, newvd->vdev_guid)) | |
2889 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2890 | ||
2891 | /* | |
2892 | * If the source is a hot spare, and the parent isn't already a | |
2893 | * spare, then we want to create a new hot spare. Otherwise, we | |
2894 | * want to create a replacing vdev. The user is not allowed to | |
2895 | * attach to a spared vdev child unless the 'isspare' state is | |
2896 | * the same (spare replaces spare, non-spare replaces | |
2897 | * non-spare). | |
2898 | */ | |
2899 | if (pvd->vdev_ops == &vdev_replacing_ops) | |
2900 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2901 | else if (pvd->vdev_ops == &vdev_spare_ops && | |
2902 | newvd->vdev_isspare != oldvd->vdev_isspare) | |
2903 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2904 | else if (pvd->vdev_ops != &vdev_spare_ops && | |
2905 | newvd->vdev_isspare) | |
2906 | pvops = &vdev_spare_ops; | |
2907 | else | |
2908 | pvops = &vdev_replacing_ops; | |
2909 | } | |
2910 | ||
2911 | /* | |
2912 | * Compare the new device size with the replaceable/attachable | |
2913 | * device size. | |
2914 | */ | |
2915 | if (newvd->vdev_psize < vdev_get_rsize(oldvd)) | |
2916 | return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); | |
2917 | ||
2918 | /* | |
2919 | * The new device cannot have a higher alignment requirement | |
2920 | * than the top-level vdev. | |
2921 | */ | |
2922 | if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
2923 | return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); | |
2924 | ||
2925 | /* | |
2926 | * If this is an in-place replacement, update oldvd's path and devid | |
2927 | * to make it distinguishable from newvd, and unopenable from now on. | |
2928 | */ | |
2929 | if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
2930 | spa_strfree(oldvd->vdev_path); | |
2931 | oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
2932 | KM_SLEEP); | |
2933 | (void) sprintf(oldvd->vdev_path, "%s/%s", | |
2934 | newvd->vdev_path, "old"); | |
2935 | if (oldvd->vdev_devid != NULL) { | |
2936 | spa_strfree(oldvd->vdev_devid); | |
2937 | oldvd->vdev_devid = NULL; | |
2938 | } | |
2939 | } | |
2940 | ||
2941 | /* | |
2942 | * If the parent is not a mirror, or if we're replacing, insert the new | |
2943 | * mirror/replacing/spare vdev above oldvd. | |
2944 | */ | |
2945 | if (pvd->vdev_ops != pvops) | |
2946 | pvd = vdev_add_parent(oldvd, pvops); | |
2947 | ||
2948 | ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
2949 | ASSERT(pvd->vdev_ops == pvops); | |
2950 | ASSERT(oldvd->vdev_parent == pvd); | |
2951 | ||
2952 | /* | |
2953 | * Extract the new device from its root and add it to pvd. | |
2954 | */ | |
2955 | vdev_remove_child(newrootvd, newvd); | |
2956 | newvd->vdev_id = pvd->vdev_children; | |
2957 | vdev_add_child(pvd, newvd); | |
2958 | ||
2959 | /* | |
2960 | * If newvd is smaller than oldvd, but larger than its rsize, | |
2961 | * the addition of newvd may have decreased our parent's asize. | |
2962 | */ | |
2963 | pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize); | |
2964 | ||
2965 | tvd = newvd->vdev_top; | |
2966 | ASSERT(pvd->vdev_top == tvd); | |
2967 | ASSERT(tvd->vdev_parent == rvd); | |
2968 | ||
2969 | vdev_config_dirty(tvd); | |
2970 | ||
2971 | /* | |
2972 | * Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate | |
2973 | * upward when spa_vdev_exit() calls vdev_dtl_reassess(). | |
2974 | */ | |
2975 | open_txg = txg + TXG_CONCURRENT_STATES - 1; | |
2976 | ||
fb5f0bc8 BB |
2977 | vdev_dtl_dirty(newvd, DTL_MISSING, |
2978 | TXG_INITIAL, open_txg - TXG_INITIAL + 1); | |
34dc7c2f BB |
2979 | |
2980 | if (newvd->vdev_isspare) | |
2981 | spa_spare_activate(newvd); | |
b128c09f BB |
2982 | oldvdpath = spa_strdup(oldvd->vdev_path); |
2983 | newvdpath = spa_strdup(newvd->vdev_path); | |
2984 | newvd_isspare = newvd->vdev_isspare; | |
34dc7c2f BB |
2985 | |
2986 | /* | |
2987 | * Mark newvd's DTL dirty in this txg. | |
2988 | */ | |
2989 | vdev_dirty(tvd, VDD_DTL, newvd, txg); | |
2990 | ||
2991 | (void) spa_vdev_exit(spa, newrootvd, open_txg, 0); | |
2992 | ||
b128c09f BB |
2993 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); |
2994 | if (dmu_tx_assign(tx, TXG_WAIT) == 0) { | |
2995 | spa_history_internal_log(LOG_POOL_VDEV_ATTACH, spa, tx, | |
2996 | CRED(), "%s vdev=%s %s vdev=%s", | |
2997 | replacing && newvd_isspare ? "spare in" : | |
2998 | replacing ? "replace" : "attach", newvdpath, | |
2999 | replacing ? "for" : "to", oldvdpath); | |
3000 | dmu_tx_commit(tx); | |
3001 | } else { | |
3002 | dmu_tx_abort(tx); | |
3003 | } | |
3004 | ||
3005 | spa_strfree(oldvdpath); | |
3006 | spa_strfree(newvdpath); | |
3007 | ||
34dc7c2f | 3008 | /* |
b128c09f | 3009 | * Kick off a resilver to update newvd. |
34dc7c2f | 3010 | */ |
b128c09f | 3011 | VERIFY3U(spa_scrub(spa, POOL_SCRUB_RESILVER), ==, 0); |
34dc7c2f BB |
3012 | |
3013 | return (0); | |
3014 | } | |
3015 | ||
3016 | /* | |
3017 | * Detach a device from a mirror or replacing vdev. | |
3018 | * If 'replace_done' is specified, only detach if the parent | |
3019 | * is a replacing vdev. | |
3020 | */ | |
3021 | int | |
fb5f0bc8 | 3022 | spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) |
34dc7c2f BB |
3023 | { |
3024 | uint64_t txg; | |
fb5f0bc8 | 3025 | int error; |
34dc7c2f BB |
3026 | vdev_t *rvd = spa->spa_root_vdev; |
3027 | vdev_t *vd, *pvd, *cvd, *tvd; | |
3028 | boolean_t unspare = B_FALSE; | |
3029 | uint64_t unspare_guid; | |
b128c09f | 3030 | size_t len; |
34dc7c2f BB |
3031 | |
3032 | txg = spa_vdev_enter(spa); | |
3033 | ||
b128c09f | 3034 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
3035 | |
3036 | if (vd == NULL) | |
3037 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
3038 | ||
3039 | if (!vd->vdev_ops->vdev_op_leaf) | |
3040 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3041 | ||
3042 | pvd = vd->vdev_parent; | |
3043 | ||
fb5f0bc8 BB |
3044 | /* |
3045 | * If the parent/child relationship is not as expected, don't do it. | |
3046 | * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing | |
3047 | * vdev that's replacing B with C. The user's intent in replacing | |
3048 | * is to go from M(A,B) to M(A,C). If the user decides to cancel | |
3049 | * the replace by detaching C, the expected behavior is to end up | |
3050 | * M(A,B). But suppose that right after deciding to detach C, | |
3051 | * the replacement of B completes. We would have M(A,C), and then | |
3052 | * ask to detach C, which would leave us with just A -- not what | |
3053 | * the user wanted. To prevent this, we make sure that the | |
3054 | * parent/child relationship hasn't changed -- in this example, | |
3055 | * that C's parent is still the replacing vdev R. | |
3056 | */ | |
3057 | if (pvd->vdev_guid != pguid && pguid != 0) | |
3058 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
3059 | ||
34dc7c2f BB |
3060 | /* |
3061 | * If replace_done is specified, only remove this device if it's | |
3062 | * the first child of a replacing vdev. For the 'spare' vdev, either | |
3063 | * disk can be removed. | |
3064 | */ | |
3065 | if (replace_done) { | |
3066 | if (pvd->vdev_ops == &vdev_replacing_ops) { | |
3067 | if (vd->vdev_id != 0) | |
3068 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3069 | } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
3070 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3071 | } | |
3072 | } | |
3073 | ||
3074 | ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
3075 | spa_version(spa) >= SPA_VERSION_SPARES); | |
3076 | ||
3077 | /* | |
3078 | * Only mirror, replacing, and spare vdevs support detach. | |
3079 | */ | |
3080 | if (pvd->vdev_ops != &vdev_replacing_ops && | |
3081 | pvd->vdev_ops != &vdev_mirror_ops && | |
3082 | pvd->vdev_ops != &vdev_spare_ops) | |
3083 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3084 | ||
3085 | /* | |
fb5f0bc8 BB |
3086 | * If this device has the only valid copy of some data, |
3087 | * we cannot safely detach it. | |
34dc7c2f | 3088 | */ |
fb5f0bc8 | 3089 | if (vdev_dtl_required(vd)) |
34dc7c2f BB |
3090 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
3091 | ||
fb5f0bc8 | 3092 | ASSERT(pvd->vdev_children >= 2); |
34dc7c2f | 3093 | |
b128c09f BB |
3094 | /* |
3095 | * If we are detaching the second disk from a replacing vdev, then | |
3096 | * check to see if we changed the original vdev's path to have "/old" | |
3097 | * at the end in spa_vdev_attach(). If so, undo that change now. | |
3098 | */ | |
3099 | if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id == 1 && | |
3100 | pvd->vdev_child[0]->vdev_path != NULL && | |
3101 | pvd->vdev_child[1]->vdev_path != NULL) { | |
3102 | ASSERT(pvd->vdev_child[1] == vd); | |
3103 | cvd = pvd->vdev_child[0]; | |
3104 | len = strlen(vd->vdev_path); | |
3105 | if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && | |
3106 | strcmp(cvd->vdev_path + len, "/old") == 0) { | |
3107 | spa_strfree(cvd->vdev_path); | |
3108 | cvd->vdev_path = spa_strdup(vd->vdev_path); | |
3109 | } | |
3110 | } | |
3111 | ||
34dc7c2f BB |
3112 | /* |
3113 | * If we are detaching the original disk from a spare, then it implies | |
3114 | * that the spare should become a real disk, and be removed from the | |
3115 | * active spare list for the pool. | |
3116 | */ | |
3117 | if (pvd->vdev_ops == &vdev_spare_ops && | |
fb5f0bc8 | 3118 | vd->vdev_id == 0 && pvd->vdev_child[1]->vdev_isspare) |
34dc7c2f BB |
3119 | unspare = B_TRUE; |
3120 | ||
3121 | /* | |
3122 | * Erase the disk labels so the disk can be used for other things. | |
3123 | * This must be done after all other error cases are handled, | |
3124 | * but before we disembowel vd (so we can still do I/O to it). | |
3125 | * But if we can't do it, don't treat the error as fatal -- | |
3126 | * it may be that the unwritability of the disk is the reason | |
3127 | * it's being detached! | |
3128 | */ | |
3129 | error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
3130 | ||
3131 | /* | |
3132 | * Remove vd from its parent and compact the parent's children. | |
3133 | */ | |
3134 | vdev_remove_child(pvd, vd); | |
3135 | vdev_compact_children(pvd); | |
3136 | ||
3137 | /* | |
3138 | * Remember one of the remaining children so we can get tvd below. | |
3139 | */ | |
3140 | cvd = pvd->vdev_child[0]; | |
3141 | ||
3142 | /* | |
3143 | * If we need to remove the remaining child from the list of hot spares, | |
fb5f0bc8 BB |
3144 | * do it now, marking the vdev as no longer a spare in the process. |
3145 | * We must do this before vdev_remove_parent(), because that can | |
3146 | * change the GUID if it creates a new toplevel GUID. For a similar | |
3147 | * reason, we must remove the spare now, in the same txg as the detach; | |
3148 | * otherwise someone could attach a new sibling, change the GUID, and | |
3149 | * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. | |
34dc7c2f BB |
3150 | */ |
3151 | if (unspare) { | |
3152 | ASSERT(cvd->vdev_isspare); | |
3153 | spa_spare_remove(cvd); | |
3154 | unspare_guid = cvd->vdev_guid; | |
fb5f0bc8 | 3155 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
34dc7c2f BB |
3156 | } |
3157 | ||
3158 | /* | |
3159 | * If the parent mirror/replacing vdev only has one child, | |
3160 | * the parent is no longer needed. Remove it from the tree. | |
3161 | */ | |
3162 | if (pvd->vdev_children == 1) | |
3163 | vdev_remove_parent(cvd); | |
3164 | ||
3165 | /* | |
3166 | * We don't set tvd until now because the parent we just removed | |
3167 | * may have been the previous top-level vdev. | |
3168 | */ | |
3169 | tvd = cvd->vdev_top; | |
3170 | ASSERT(tvd->vdev_parent == rvd); | |
3171 | ||
3172 | /* | |
3173 | * Reevaluate the parent vdev state. | |
3174 | */ | |
3175 | vdev_propagate_state(cvd); | |
3176 | ||
3177 | /* | |
3178 | * If the device we just detached was smaller than the others, it may be | |
3179 | * possible to add metaslabs (i.e. grow the pool). vdev_metaslab_init() | |
3180 | * can't fail because the existing metaslabs are already in core, so | |
3181 | * there's nothing to read from disk. | |
3182 | */ | |
3183 | VERIFY(vdev_metaslab_init(tvd, txg) == 0); | |
3184 | ||
3185 | vdev_config_dirty(tvd); | |
3186 | ||
3187 | /* | |
3188 | * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that | |
3189 | * vd->vdev_detached is set and free vd's DTL object in syncing context. | |
3190 | * But first make sure we're not on any *other* txg's DTL list, to | |
3191 | * prevent vd from being accessed after it's freed. | |
3192 | */ | |
fb5f0bc8 | 3193 | for (int t = 0; t < TXG_SIZE; t++) |
34dc7c2f BB |
3194 | (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); |
3195 | vd->vdev_detached = B_TRUE; | |
3196 | vdev_dirty(tvd, VDD_DTL, vd, txg); | |
3197 | ||
3198 | spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE); | |
3199 | ||
3200 | error = spa_vdev_exit(spa, vd, txg, 0); | |
3201 | ||
3202 | /* | |
3203 | * If this was the removal of the original device in a hot spare vdev, | |
3204 | * then we want to go through and remove the device from the hot spare | |
3205 | * list of every other pool. | |
3206 | */ | |
3207 | if (unspare) { | |
fb5f0bc8 | 3208 | spa_t *myspa = spa; |
34dc7c2f BB |
3209 | spa = NULL; |
3210 | mutex_enter(&spa_namespace_lock); | |
3211 | while ((spa = spa_next(spa)) != NULL) { | |
3212 | if (spa->spa_state != POOL_STATE_ACTIVE) | |
3213 | continue; | |
fb5f0bc8 BB |
3214 | if (spa == myspa) |
3215 | continue; | |
b128c09f BB |
3216 | spa_open_ref(spa, FTAG); |
3217 | mutex_exit(&spa_namespace_lock); | |
34dc7c2f | 3218 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
b128c09f BB |
3219 | mutex_enter(&spa_namespace_lock); |
3220 | spa_close(spa, FTAG); | |
34dc7c2f BB |
3221 | } |
3222 | mutex_exit(&spa_namespace_lock); | |
3223 | } | |
3224 | ||
3225 | return (error); | |
3226 | } | |
3227 | ||
b128c09f BB |
3228 | static nvlist_t * |
3229 | spa_nvlist_lookup_by_guid(nvlist_t **nvpp, int count, uint64_t target_guid) | |
34dc7c2f | 3230 | { |
b128c09f BB |
3231 | for (int i = 0; i < count; i++) { |
3232 | uint64_t guid; | |
34dc7c2f | 3233 | |
b128c09f BB |
3234 | VERIFY(nvlist_lookup_uint64(nvpp[i], ZPOOL_CONFIG_GUID, |
3235 | &guid) == 0); | |
34dc7c2f | 3236 | |
b128c09f BB |
3237 | if (guid == target_guid) |
3238 | return (nvpp[i]); | |
34dc7c2f BB |
3239 | } |
3240 | ||
b128c09f | 3241 | return (NULL); |
34dc7c2f BB |
3242 | } |
3243 | ||
b128c09f BB |
3244 | static void |
3245 | spa_vdev_remove_aux(nvlist_t *config, char *name, nvlist_t **dev, int count, | |
3246 | nvlist_t *dev_to_remove) | |
34dc7c2f | 3247 | { |
b128c09f | 3248 | nvlist_t **newdev = NULL; |
34dc7c2f | 3249 | |
b128c09f BB |
3250 | if (count > 1) |
3251 | newdev = kmem_alloc((count - 1) * sizeof (void *), KM_SLEEP); | |
34dc7c2f | 3252 | |
b128c09f BB |
3253 | for (int i = 0, j = 0; i < count; i++) { |
3254 | if (dev[i] == dev_to_remove) | |
3255 | continue; | |
3256 | VERIFY(nvlist_dup(dev[i], &newdev[j++], KM_SLEEP) == 0); | |
34dc7c2f BB |
3257 | } |
3258 | ||
b128c09f BB |
3259 | VERIFY(nvlist_remove(config, name, DATA_TYPE_NVLIST_ARRAY) == 0); |
3260 | VERIFY(nvlist_add_nvlist_array(config, name, newdev, count - 1) == 0); | |
34dc7c2f | 3261 | |
b128c09f BB |
3262 | for (int i = 0; i < count - 1; i++) |
3263 | nvlist_free(newdev[i]); | |
34dc7c2f | 3264 | |
b128c09f BB |
3265 | if (count > 1) |
3266 | kmem_free(newdev, (count - 1) * sizeof (void *)); | |
34dc7c2f BB |
3267 | } |
3268 | ||
3269 | /* | |
3270 | * Remove a device from the pool. Currently, this supports removing only hot | |
3271 | * spares and level 2 ARC devices. | |
3272 | */ | |
3273 | int | |
3274 | spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
3275 | { | |
3276 | vdev_t *vd; | |
b128c09f | 3277 | nvlist_t **spares, **l2cache, *nv; |
34dc7c2f | 3278 | uint_t nspares, nl2cache; |
fb5f0bc8 | 3279 | uint64_t txg = 0; |
34dc7c2f | 3280 | int error = 0; |
fb5f0bc8 | 3281 | boolean_t locked = MUTEX_HELD(&spa_namespace_lock); |
34dc7c2f | 3282 | |
fb5f0bc8 BB |
3283 | if (!locked) |
3284 | txg = spa_vdev_enter(spa); | |
34dc7c2f | 3285 | |
b128c09f | 3286 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
3287 | |
3288 | if (spa->spa_spares.sav_vdevs != NULL && | |
34dc7c2f | 3289 | nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, |
b128c09f BB |
3290 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0 && |
3291 | (nv = spa_nvlist_lookup_by_guid(spares, nspares, guid)) != NULL) { | |
3292 | /* | |
3293 | * Only remove the hot spare if it's not currently in use | |
3294 | * in this pool. | |
3295 | */ | |
3296 | if (vd == NULL || unspare) { | |
3297 | spa_vdev_remove_aux(spa->spa_spares.sav_config, | |
3298 | ZPOOL_CONFIG_SPARES, spares, nspares, nv); | |
3299 | spa_load_spares(spa); | |
3300 | spa->spa_spares.sav_sync = B_TRUE; | |
3301 | } else { | |
3302 | error = EBUSY; | |
3303 | } | |
3304 | } else if (spa->spa_l2cache.sav_vdevs != NULL && | |
34dc7c2f | 3305 | nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, |
b128c09f BB |
3306 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && |
3307 | (nv = spa_nvlist_lookup_by_guid(l2cache, nl2cache, guid)) != NULL) { | |
3308 | /* | |
3309 | * Cache devices can always be removed. | |
3310 | */ | |
3311 | spa_vdev_remove_aux(spa->spa_l2cache.sav_config, | |
3312 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); | |
34dc7c2f BB |
3313 | spa_load_l2cache(spa); |
3314 | spa->spa_l2cache.sav_sync = B_TRUE; | |
b128c09f BB |
3315 | } else if (vd != NULL) { |
3316 | /* | |
3317 | * Normal vdevs cannot be removed (yet). | |
3318 | */ | |
3319 | error = ENOTSUP; | |
3320 | } else { | |
3321 | /* | |
3322 | * There is no vdev of any kind with the specified guid. | |
3323 | */ | |
3324 | error = ENOENT; | |
34dc7c2f BB |
3325 | } |
3326 | ||
fb5f0bc8 BB |
3327 | if (!locked) |
3328 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
3329 | ||
3330 | return (error); | |
34dc7c2f BB |
3331 | } |
3332 | ||
3333 | /* | |
3334 | * Find any device that's done replacing, or a vdev marked 'unspare' that's | |
3335 | * current spared, so we can detach it. | |
3336 | */ | |
3337 | static vdev_t * | |
3338 | spa_vdev_resilver_done_hunt(vdev_t *vd) | |
3339 | { | |
3340 | vdev_t *newvd, *oldvd; | |
3341 | int c; | |
3342 | ||
3343 | for (c = 0; c < vd->vdev_children; c++) { | |
3344 | oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); | |
3345 | if (oldvd != NULL) | |
3346 | return (oldvd); | |
3347 | } | |
3348 | ||
3349 | /* | |
3350 | * Check for a completed replacement. | |
3351 | */ | |
3352 | if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { | |
3353 | oldvd = vd->vdev_child[0]; | |
3354 | newvd = vd->vdev_child[1]; | |
3355 | ||
fb5f0bc8 BB |
3356 | if (vdev_dtl_empty(newvd, DTL_MISSING) && |
3357 | !vdev_dtl_required(oldvd)) | |
34dc7c2f | 3358 | return (oldvd); |
34dc7c2f BB |
3359 | } |
3360 | ||
3361 | /* | |
3362 | * Check for a completed resilver with the 'unspare' flag set. | |
3363 | */ | |
3364 | if (vd->vdev_ops == &vdev_spare_ops && vd->vdev_children == 2) { | |
3365 | newvd = vd->vdev_child[0]; | |
3366 | oldvd = vd->vdev_child[1]; | |
3367 | ||
34dc7c2f | 3368 | if (newvd->vdev_unspare && |
fb5f0bc8 BB |
3369 | vdev_dtl_empty(newvd, DTL_MISSING) && |
3370 | !vdev_dtl_required(oldvd)) { | |
34dc7c2f | 3371 | newvd->vdev_unspare = 0; |
34dc7c2f BB |
3372 | return (oldvd); |
3373 | } | |
34dc7c2f BB |
3374 | } |
3375 | ||
3376 | return (NULL); | |
3377 | } | |
3378 | ||
3379 | static void | |
3380 | spa_vdev_resilver_done(spa_t *spa) | |
3381 | { | |
fb5f0bc8 BB |
3382 | vdev_t *vd, *pvd, *ppvd; |
3383 | uint64_t guid, sguid, pguid, ppguid; | |
34dc7c2f | 3384 | |
fb5f0bc8 | 3385 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
3386 | |
3387 | while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { | |
fb5f0bc8 BB |
3388 | pvd = vd->vdev_parent; |
3389 | ppvd = pvd->vdev_parent; | |
34dc7c2f | 3390 | guid = vd->vdev_guid; |
fb5f0bc8 BB |
3391 | pguid = pvd->vdev_guid; |
3392 | ppguid = ppvd->vdev_guid; | |
3393 | sguid = 0; | |
34dc7c2f BB |
3394 | /* |
3395 | * If we have just finished replacing a hot spared device, then | |
3396 | * we need to detach the parent's first child (the original hot | |
3397 | * spare) as well. | |
3398 | */ | |
fb5f0bc8 | 3399 | if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0) { |
34dc7c2f | 3400 | ASSERT(pvd->vdev_ops == &vdev_replacing_ops); |
fb5f0bc8 BB |
3401 | ASSERT(ppvd->vdev_children == 2); |
3402 | sguid = ppvd->vdev_child[1]->vdev_guid; | |
34dc7c2f | 3403 | } |
fb5f0bc8 BB |
3404 | spa_config_exit(spa, SCL_ALL, FTAG); |
3405 | if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) | |
34dc7c2f | 3406 | return; |
fb5f0bc8 | 3407 | if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) |
34dc7c2f | 3408 | return; |
fb5f0bc8 | 3409 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
3410 | } |
3411 | ||
fb5f0bc8 | 3412 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3413 | } |
3414 | ||
3415 | /* | |
3416 | * Update the stored path for this vdev. Dirty the vdev configuration, relying | |
3417 | * on spa_vdev_enter/exit() to synchronize the labels and cache. | |
3418 | */ | |
3419 | int | |
3420 | spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) | |
3421 | { | |
b128c09f | 3422 | vdev_t *vd; |
34dc7c2f BB |
3423 | uint64_t txg; |
3424 | ||
34dc7c2f BB |
3425 | txg = spa_vdev_enter(spa); |
3426 | ||
b128c09f | 3427 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) { |
34dc7c2f | 3428 | /* |
b128c09f BB |
3429 | * Determine if this is a reference to a hot spare device. If |
3430 | * it is, update the path manually as there is no associated | |
3431 | * vdev_t that can be synced to disk. | |
34dc7c2f | 3432 | */ |
b128c09f BB |
3433 | nvlist_t **spares; |
3434 | uint_t i, nspares; | |
34dc7c2f BB |
3435 | |
3436 | if (spa->spa_spares.sav_config != NULL) { | |
3437 | VERIFY(nvlist_lookup_nvlist_array( | |
3438 | spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
3439 | &spares, &nspares) == 0); | |
3440 | for (i = 0; i < nspares; i++) { | |
3441 | uint64_t theguid; | |
3442 | VERIFY(nvlist_lookup_uint64(spares[i], | |
3443 | ZPOOL_CONFIG_GUID, &theguid) == 0); | |
3444 | if (theguid == guid) { | |
3445 | VERIFY(nvlist_add_string(spares[i], | |
3446 | ZPOOL_CONFIG_PATH, newpath) == 0); | |
3447 | spa_load_spares(spa); | |
3448 | spa->spa_spares.sav_sync = B_TRUE; | |
3449 | return (spa_vdev_exit(spa, NULL, txg, | |
3450 | 0)); | |
3451 | } | |
3452 | } | |
3453 | } | |
3454 | ||
34dc7c2f BB |
3455 | return (spa_vdev_exit(spa, NULL, txg, ENOENT)); |
3456 | } | |
3457 | ||
3458 | if (!vd->vdev_ops->vdev_op_leaf) | |
3459 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3460 | ||
3461 | spa_strfree(vd->vdev_path); | |
3462 | vd->vdev_path = spa_strdup(newpath); | |
3463 | ||
3464 | vdev_config_dirty(vd->vdev_top); | |
3465 | ||
3466 | return (spa_vdev_exit(spa, NULL, txg, 0)); | |
3467 | } | |
3468 | ||
3469 | /* | |
3470 | * ========================================================================== | |
3471 | * SPA Scrubbing | |
3472 | * ========================================================================== | |
3473 | */ | |
3474 | ||
34dc7c2f | 3475 | int |
b128c09f | 3476 | spa_scrub(spa_t *spa, pool_scrub_type_t type) |
34dc7c2f | 3477 | { |
b128c09f | 3478 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); |
34dc7c2f BB |
3479 | |
3480 | if ((uint_t)type >= POOL_SCRUB_TYPES) | |
3481 | return (ENOTSUP); | |
3482 | ||
34dc7c2f | 3483 | /* |
b128c09f BB |
3484 | * If a resilver was requested, but there is no DTL on a |
3485 | * writeable leaf device, we have nothing to do. | |
34dc7c2f | 3486 | */ |
b128c09f BB |
3487 | if (type == POOL_SCRUB_RESILVER && |
3488 | !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { | |
3489 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f BB |
3490 | return (0); |
3491 | } | |
3492 | ||
b128c09f BB |
3493 | if (type == POOL_SCRUB_EVERYTHING && |
3494 | spa->spa_dsl_pool->dp_scrub_func != SCRUB_FUNC_NONE && | |
3495 | spa->spa_dsl_pool->dp_scrub_isresilver) | |
3496 | return (EBUSY); | |
34dc7c2f | 3497 | |
b128c09f BB |
3498 | if (type == POOL_SCRUB_EVERYTHING || type == POOL_SCRUB_RESILVER) { |
3499 | return (dsl_pool_scrub_clean(spa->spa_dsl_pool)); | |
3500 | } else if (type == POOL_SCRUB_NONE) { | |
3501 | return (dsl_pool_scrub_cancel(spa->spa_dsl_pool)); | |
34dc7c2f | 3502 | } else { |
b128c09f | 3503 | return (EINVAL); |
34dc7c2f | 3504 | } |
34dc7c2f BB |
3505 | } |
3506 | ||
3507 | /* | |
3508 | * ========================================================================== | |
3509 | * SPA async task processing | |
3510 | * ========================================================================== | |
3511 | */ | |
3512 | ||
3513 | static void | |
3514 | spa_async_remove(spa_t *spa, vdev_t *vd) | |
3515 | { | |
b128c09f BB |
3516 | if (vd->vdev_remove_wanted) { |
3517 | vd->vdev_remove_wanted = 0; | |
3518 | vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); | |
3519 | vdev_clear(spa, vd); | |
3520 | vdev_state_dirty(vd->vdev_top); | |
3521 | } | |
34dc7c2f | 3522 | |
b128c09f BB |
3523 | for (int c = 0; c < vd->vdev_children; c++) |
3524 | spa_async_remove(spa, vd->vdev_child[c]); | |
3525 | } | |
3526 | ||
3527 | static void | |
3528 | spa_async_probe(spa_t *spa, vdev_t *vd) | |
3529 | { | |
3530 | if (vd->vdev_probe_wanted) { | |
3531 | vd->vdev_probe_wanted = 0; | |
3532 | vdev_reopen(vd); /* vdev_open() does the actual probe */ | |
34dc7c2f | 3533 | } |
b128c09f BB |
3534 | |
3535 | for (int c = 0; c < vd->vdev_children; c++) | |
3536 | spa_async_probe(spa, vd->vdev_child[c]); | |
34dc7c2f BB |
3537 | } |
3538 | ||
3539 | static void | |
3540 | spa_async_thread(spa_t *spa) | |
3541 | { | |
3542 | int tasks; | |
34dc7c2f BB |
3543 | |
3544 | ASSERT(spa->spa_sync_on); | |
3545 | ||
3546 | mutex_enter(&spa->spa_async_lock); | |
3547 | tasks = spa->spa_async_tasks; | |
3548 | spa->spa_async_tasks = 0; | |
3549 | mutex_exit(&spa->spa_async_lock); | |
3550 | ||
3551 | /* | |
3552 | * See if the config needs to be updated. | |
3553 | */ | |
3554 | if (tasks & SPA_ASYNC_CONFIG_UPDATE) { | |
3555 | mutex_enter(&spa_namespace_lock); | |
3556 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
3557 | mutex_exit(&spa_namespace_lock); | |
3558 | } | |
3559 | ||
3560 | /* | |
3561 | * See if any devices need to be marked REMOVED. | |
34dc7c2f | 3562 | */ |
b128c09f BB |
3563 | if (tasks & SPA_ASYNC_REMOVE) { |
3564 | spa_vdev_state_enter(spa); | |
34dc7c2f | 3565 | spa_async_remove(spa, spa->spa_root_vdev); |
b128c09f BB |
3566 | for (int i = 0; i < spa->spa_l2cache.sav_count; i++) |
3567 | spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); | |
3568 | for (int i = 0; i < spa->spa_spares.sav_count; i++) | |
3569 | spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); | |
3570 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
34dc7c2f BB |
3571 | } |
3572 | ||
3573 | /* | |
b128c09f | 3574 | * See if any devices need to be probed. |
34dc7c2f | 3575 | */ |
b128c09f BB |
3576 | if (tasks & SPA_ASYNC_PROBE) { |
3577 | spa_vdev_state_enter(spa); | |
3578 | spa_async_probe(spa, spa->spa_root_vdev); | |
3579 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
3580 | } | |
34dc7c2f BB |
3581 | |
3582 | /* | |
b128c09f | 3583 | * If any devices are done replacing, detach them. |
34dc7c2f | 3584 | */ |
b128c09f BB |
3585 | if (tasks & SPA_ASYNC_RESILVER_DONE) |
3586 | spa_vdev_resilver_done(spa); | |
34dc7c2f BB |
3587 | |
3588 | /* | |
3589 | * Kick off a resilver. | |
3590 | */ | |
b128c09f BB |
3591 | if (tasks & SPA_ASYNC_RESILVER) |
3592 | VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER) == 0); | |
34dc7c2f BB |
3593 | |
3594 | /* | |
3595 | * Let the world know that we're done. | |
3596 | */ | |
3597 | mutex_enter(&spa->spa_async_lock); | |
3598 | spa->spa_async_thread = NULL; | |
3599 | cv_broadcast(&spa->spa_async_cv); | |
3600 | mutex_exit(&spa->spa_async_lock); | |
3601 | thread_exit(); | |
3602 | } | |
3603 | ||
3604 | void | |
3605 | spa_async_suspend(spa_t *spa) | |
3606 | { | |
3607 | mutex_enter(&spa->spa_async_lock); | |
3608 | spa->spa_async_suspended++; | |
3609 | while (spa->spa_async_thread != NULL) | |
3610 | cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
3611 | mutex_exit(&spa->spa_async_lock); | |
3612 | } | |
3613 | ||
3614 | void | |
3615 | spa_async_resume(spa_t *spa) | |
3616 | { | |
3617 | mutex_enter(&spa->spa_async_lock); | |
3618 | ASSERT(spa->spa_async_suspended != 0); | |
3619 | spa->spa_async_suspended--; | |
3620 | mutex_exit(&spa->spa_async_lock); | |
3621 | } | |
3622 | ||
3623 | static void | |
3624 | spa_async_dispatch(spa_t *spa) | |
3625 | { | |
3626 | mutex_enter(&spa->spa_async_lock); | |
3627 | if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
3628 | spa->spa_async_thread == NULL && | |
3629 | rootdir != NULL && !vn_is_readonly(rootdir)) | |
3630 | spa->spa_async_thread = thread_create(NULL, 0, | |
3631 | spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
3632 | mutex_exit(&spa->spa_async_lock); | |
3633 | } | |
3634 | ||
3635 | void | |
3636 | spa_async_request(spa_t *spa, int task) | |
3637 | { | |
3638 | mutex_enter(&spa->spa_async_lock); | |
3639 | spa->spa_async_tasks |= task; | |
3640 | mutex_exit(&spa->spa_async_lock); | |
3641 | } | |
3642 | ||
3643 | /* | |
3644 | * ========================================================================== | |
3645 | * SPA syncing routines | |
3646 | * ========================================================================== | |
3647 | */ | |
3648 | ||
3649 | static void | |
3650 | spa_sync_deferred_frees(spa_t *spa, uint64_t txg) | |
3651 | { | |
3652 | bplist_t *bpl = &spa->spa_sync_bplist; | |
3653 | dmu_tx_t *tx; | |
3654 | blkptr_t blk; | |
3655 | uint64_t itor = 0; | |
3656 | zio_t *zio; | |
3657 | int error; | |
3658 | uint8_t c = 1; | |
3659 | ||
b128c09f | 3660 | zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CANFAIL); |
34dc7c2f | 3661 | |
b128c09f BB |
3662 | while (bplist_iterate(bpl, &itor, &blk) == 0) { |
3663 | ASSERT(blk.blk_birth < txg); | |
3664 | zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL, | |
3665 | ZIO_FLAG_MUSTSUCCEED)); | |
3666 | } | |
34dc7c2f BB |
3667 | |
3668 | error = zio_wait(zio); | |
3669 | ASSERT3U(error, ==, 0); | |
3670 | ||
3671 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
3672 | bplist_vacate(bpl, tx); | |
3673 | ||
3674 | /* | |
3675 | * Pre-dirty the first block so we sync to convergence faster. | |
3676 | * (Usually only the first block is needed.) | |
3677 | */ | |
3678 | dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx); | |
3679 | dmu_tx_commit(tx); | |
3680 | } | |
3681 | ||
3682 | static void | |
3683 | spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) | |
3684 | { | |
3685 | char *packed = NULL; | |
b128c09f | 3686 | size_t bufsize; |
34dc7c2f BB |
3687 | size_t nvsize = 0; |
3688 | dmu_buf_t *db; | |
3689 | ||
3690 | VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
3691 | ||
b128c09f BB |
3692 | /* |
3693 | * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration | |
3694 | * information. This avoids the dbuf_will_dirty() path and | |
3695 | * saves us a pre-read to get data we don't actually care about. | |
3696 | */ | |
3697 | bufsize = P2ROUNDUP(nvsize, SPA_CONFIG_BLOCKSIZE); | |
3698 | packed = kmem_alloc(bufsize, KM_SLEEP); | |
34dc7c2f BB |
3699 | |
3700 | VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
3701 | KM_SLEEP) == 0); | |
b128c09f | 3702 | bzero(packed + nvsize, bufsize - nvsize); |
34dc7c2f | 3703 | |
b128c09f | 3704 | dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); |
34dc7c2f | 3705 | |
b128c09f | 3706 | kmem_free(packed, bufsize); |
34dc7c2f BB |
3707 | |
3708 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
3709 | dmu_buf_will_dirty(db, tx); | |
3710 | *(uint64_t *)db->db_data = nvsize; | |
3711 | dmu_buf_rele(db, FTAG); | |
3712 | } | |
3713 | ||
3714 | static void | |
3715 | spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, | |
3716 | const char *config, const char *entry) | |
3717 | { | |
3718 | nvlist_t *nvroot; | |
3719 | nvlist_t **list; | |
3720 | int i; | |
3721 | ||
3722 | if (!sav->sav_sync) | |
3723 | return; | |
3724 | ||
3725 | /* | |
3726 | * Update the MOS nvlist describing the list of available devices. | |
3727 | * spa_validate_aux() will have already made sure this nvlist is | |
3728 | * valid and the vdevs are labeled appropriately. | |
3729 | */ | |
3730 | if (sav->sav_object == 0) { | |
3731 | sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
3732 | DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
3733 | sizeof (uint64_t), tx); | |
3734 | VERIFY(zap_update(spa->spa_meta_objset, | |
3735 | DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, | |
3736 | &sav->sav_object, tx) == 0); | |
3737 | } | |
3738 | ||
3739 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
3740 | if (sav->sav_count == 0) { | |
3741 | VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
3742 | } else { | |
3743 | list = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); | |
3744 | for (i = 0; i < sav->sav_count; i++) | |
3745 | list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
3746 | B_FALSE, B_FALSE, B_TRUE); | |
3747 | VERIFY(nvlist_add_nvlist_array(nvroot, config, list, | |
3748 | sav->sav_count) == 0); | |
3749 | for (i = 0; i < sav->sav_count; i++) | |
3750 | nvlist_free(list[i]); | |
3751 | kmem_free(list, sav->sav_count * sizeof (void *)); | |
3752 | } | |
3753 | ||
3754 | spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); | |
3755 | nvlist_free(nvroot); | |
3756 | ||
3757 | sav->sav_sync = B_FALSE; | |
3758 | } | |
3759 | ||
3760 | static void | |
3761 | spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) | |
3762 | { | |
3763 | nvlist_t *config; | |
3764 | ||
b128c09f | 3765 | if (list_is_empty(&spa->spa_config_dirty_list)) |
34dc7c2f BB |
3766 | return; |
3767 | ||
b128c09f BB |
3768 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
3769 | ||
3770 | config = spa_config_generate(spa, spa->spa_root_vdev, | |
3771 | dmu_tx_get_txg(tx), B_FALSE); | |
3772 | ||
3773 | spa_config_exit(spa, SCL_STATE, FTAG); | |
34dc7c2f BB |
3774 | |
3775 | if (spa->spa_config_syncing) | |
3776 | nvlist_free(spa->spa_config_syncing); | |
3777 | spa->spa_config_syncing = config; | |
3778 | ||
3779 | spa_sync_nvlist(spa, spa->spa_config_object, config, tx); | |
3780 | } | |
3781 | ||
3782 | /* | |
3783 | * Set zpool properties. | |
3784 | */ | |
3785 | static void | |
3786 | spa_sync_props(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) | |
3787 | { | |
3788 | spa_t *spa = arg1; | |
3789 | objset_t *mos = spa->spa_meta_objset; | |
3790 | nvlist_t *nvp = arg2; | |
3791 | nvpair_t *elem; | |
3792 | uint64_t intval; | |
b128c09f | 3793 | char *strval; |
34dc7c2f BB |
3794 | zpool_prop_t prop; |
3795 | const char *propname; | |
3796 | zprop_type_t proptype; | |
b128c09f BB |
3797 | spa_config_dirent_t *dp; |
3798 | ||
3799 | mutex_enter(&spa->spa_props_lock); | |
34dc7c2f BB |
3800 | |
3801 | elem = NULL; | |
3802 | while ((elem = nvlist_next_nvpair(nvp, elem))) { | |
3803 | switch (prop = zpool_name_to_prop(nvpair_name(elem))) { | |
3804 | case ZPOOL_PROP_VERSION: | |
3805 | /* | |
3806 | * Only set version for non-zpool-creation cases | |
3807 | * (set/import). spa_create() needs special care | |
3808 | * for version setting. | |
3809 | */ | |
3810 | if (tx->tx_txg != TXG_INITIAL) { | |
3811 | VERIFY(nvpair_value_uint64(elem, | |
3812 | &intval) == 0); | |
3813 | ASSERT(intval <= SPA_VERSION); | |
3814 | ASSERT(intval >= spa_version(spa)); | |
3815 | spa->spa_uberblock.ub_version = intval; | |
3816 | vdev_config_dirty(spa->spa_root_vdev); | |
3817 | } | |
3818 | break; | |
3819 | ||
3820 | case ZPOOL_PROP_ALTROOT: | |
3821 | /* | |
3822 | * 'altroot' is a non-persistent property. It should | |
3823 | * have been set temporarily at creation or import time. | |
3824 | */ | |
3825 | ASSERT(spa->spa_root != NULL); | |
3826 | break; | |
3827 | ||
3828 | case ZPOOL_PROP_CACHEFILE: | |
3829 | /* | |
3830 | * 'cachefile' is a non-persistent property, but note | |
3831 | * an async request that the config cache needs to be | |
3832 | * udpated. | |
3833 | */ | |
3834 | VERIFY(nvpair_value_string(elem, &strval) == 0); | |
b128c09f BB |
3835 | |
3836 | dp = kmem_alloc(sizeof (spa_config_dirent_t), KM_SLEEP); | |
3837 | ||
3838 | if (strval[0] == '\0') | |
3839 | dp->scd_path = spa_strdup(spa_config_path); | |
3840 | else if (strcmp(strval, "none") == 0) | |
3841 | dp->scd_path = NULL; | |
3842 | else | |
3843 | dp->scd_path = spa_strdup(strval); | |
3844 | ||
3845 | list_insert_head(&spa->spa_config_list, dp); | |
34dc7c2f BB |
3846 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); |
3847 | break; | |
3848 | default: | |
3849 | /* | |
3850 | * Set pool property values in the poolprops mos object. | |
3851 | */ | |
34dc7c2f BB |
3852 | if (spa->spa_pool_props_object == 0) { |
3853 | objset_t *mos = spa->spa_meta_objset; | |
3854 | ||
3855 | VERIFY((spa->spa_pool_props_object = | |
3856 | zap_create(mos, DMU_OT_POOL_PROPS, | |
3857 | DMU_OT_NONE, 0, tx)) > 0); | |
3858 | ||
3859 | VERIFY(zap_update(mos, | |
3860 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, | |
3861 | 8, 1, &spa->spa_pool_props_object, tx) | |
3862 | == 0); | |
3863 | } | |
34dc7c2f BB |
3864 | |
3865 | /* normalize the property name */ | |
3866 | propname = zpool_prop_to_name(prop); | |
3867 | proptype = zpool_prop_get_type(prop); | |
3868 | ||
3869 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
3870 | ASSERT(proptype == PROP_TYPE_STRING); | |
3871 | VERIFY(nvpair_value_string(elem, &strval) == 0); | |
3872 | VERIFY(zap_update(mos, | |
3873 | spa->spa_pool_props_object, propname, | |
3874 | 1, strlen(strval) + 1, strval, tx) == 0); | |
3875 | ||
3876 | } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { | |
3877 | VERIFY(nvpair_value_uint64(elem, &intval) == 0); | |
3878 | ||
3879 | if (proptype == PROP_TYPE_INDEX) { | |
3880 | const char *unused; | |
3881 | VERIFY(zpool_prop_index_to_string( | |
3882 | prop, intval, &unused) == 0); | |
3883 | } | |
3884 | VERIFY(zap_update(mos, | |
3885 | spa->spa_pool_props_object, propname, | |
3886 | 8, 1, &intval, tx) == 0); | |
3887 | } else { | |
3888 | ASSERT(0); /* not allowed */ | |
3889 | } | |
3890 | ||
3891 | switch (prop) { | |
3892 | case ZPOOL_PROP_DELEGATION: | |
3893 | spa->spa_delegation = intval; | |
3894 | break; | |
3895 | case ZPOOL_PROP_BOOTFS: | |
3896 | spa->spa_bootfs = intval; | |
3897 | break; | |
3898 | case ZPOOL_PROP_FAILUREMODE: | |
3899 | spa->spa_failmode = intval; | |
3900 | break; | |
3901 | default: | |
3902 | break; | |
3903 | } | |
3904 | } | |
3905 | ||
3906 | /* log internal history if this is not a zpool create */ | |
3907 | if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY && | |
3908 | tx->tx_txg != TXG_INITIAL) { | |
3909 | spa_history_internal_log(LOG_POOL_PROPSET, | |
3910 | spa, tx, cr, "%s %lld %s", | |
b128c09f | 3911 | nvpair_name(elem), intval, spa_name(spa)); |
34dc7c2f BB |
3912 | } |
3913 | } | |
b128c09f BB |
3914 | |
3915 | mutex_exit(&spa->spa_props_lock); | |
34dc7c2f BB |
3916 | } |
3917 | ||
3918 | /* | |
3919 | * Sync the specified transaction group. New blocks may be dirtied as | |
3920 | * part of the process, so we iterate until it converges. | |
3921 | */ | |
3922 | void | |
3923 | spa_sync(spa_t *spa, uint64_t txg) | |
3924 | { | |
3925 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
3926 | objset_t *mos = spa->spa_meta_objset; | |
3927 | bplist_t *bpl = &spa->spa_sync_bplist; | |
3928 | vdev_t *rvd = spa->spa_root_vdev; | |
3929 | vdev_t *vd; | |
34dc7c2f BB |
3930 | dmu_tx_t *tx; |
3931 | int dirty_vdevs; | |
b128c09f | 3932 | int error; |
34dc7c2f BB |
3933 | |
3934 | /* | |
3935 | * Lock out configuration changes. | |
3936 | */ | |
b128c09f | 3937 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
3938 | |
3939 | spa->spa_syncing_txg = txg; | |
3940 | spa->spa_sync_pass = 0; | |
3941 | ||
b128c09f BB |
3942 | /* |
3943 | * If there are any pending vdev state changes, convert them | |
3944 | * into config changes that go out with this transaction group. | |
3945 | */ | |
3946 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
fb5f0bc8 BB |
3947 | while (list_head(&spa->spa_state_dirty_list) != NULL) { |
3948 | /* | |
3949 | * We need the write lock here because, for aux vdevs, | |
3950 | * calling vdev_config_dirty() modifies sav_config. | |
3951 | * This is ugly and will become unnecessary when we | |
3952 | * eliminate the aux vdev wart by integrating all vdevs | |
3953 | * into the root vdev tree. | |
3954 | */ | |
3955 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
3956 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); | |
3957 | while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { | |
3958 | vdev_state_clean(vd); | |
3959 | vdev_config_dirty(vd); | |
3960 | } | |
3961 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
3962 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
b128c09f BB |
3963 | } |
3964 | spa_config_exit(spa, SCL_STATE, FTAG); | |
3965 | ||
34dc7c2f BB |
3966 | VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj)); |
3967 | ||
3968 | tx = dmu_tx_create_assigned(dp, txg); | |
3969 | ||
3970 | /* | |
3971 | * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, | |
3972 | * set spa_deflate if we have no raid-z vdevs. | |
3973 | */ | |
3974 | if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && | |
3975 | spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
3976 | int i; | |
3977 | ||
3978 | for (i = 0; i < rvd->vdev_children; i++) { | |
3979 | vd = rvd->vdev_child[i]; | |
3980 | if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
3981 | break; | |
3982 | } | |
3983 | if (i == rvd->vdev_children) { | |
3984 | spa->spa_deflate = TRUE; | |
3985 | VERIFY(0 == zap_add(spa->spa_meta_objset, | |
3986 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
3987 | sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
3988 | } | |
3989 | } | |
3990 | ||
b128c09f BB |
3991 | if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && |
3992 | spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { | |
3993 | dsl_pool_create_origin(dp, tx); | |
3994 | ||
3995 | /* Keeping the origin open increases spa_minref */ | |
3996 | spa->spa_minref += 3; | |
3997 | } | |
3998 | ||
3999 | if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && | |
4000 | spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { | |
4001 | dsl_pool_upgrade_clones(dp, tx); | |
4002 | } | |
4003 | ||
34dc7c2f BB |
4004 | /* |
4005 | * If anything has changed in this txg, push the deferred frees | |
4006 | * from the previous txg. If not, leave them alone so that we | |
4007 | * don't generate work on an otherwise idle system. | |
4008 | */ | |
4009 | if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
4010 | !txg_list_empty(&dp->dp_dirty_dirs, txg) || | |
4011 | !txg_list_empty(&dp->dp_sync_tasks, txg)) | |
4012 | spa_sync_deferred_frees(spa, txg); | |
4013 | ||
4014 | /* | |
4015 | * Iterate to convergence. | |
4016 | */ | |
4017 | do { | |
4018 | spa->spa_sync_pass++; | |
4019 | ||
4020 | spa_sync_config_object(spa, tx); | |
4021 | spa_sync_aux_dev(spa, &spa->spa_spares, tx, | |
4022 | ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
4023 | spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
4024 | ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
4025 | spa_errlog_sync(spa, txg); | |
4026 | dsl_pool_sync(dp, txg); | |
4027 | ||
4028 | dirty_vdevs = 0; | |
4029 | while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) { | |
4030 | vdev_sync(vd, txg); | |
4031 | dirty_vdevs++; | |
4032 | } | |
4033 | ||
4034 | bplist_sync(bpl, tx); | |
4035 | } while (dirty_vdevs); | |
4036 | ||
4037 | bplist_close(bpl); | |
4038 | ||
4039 | dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass); | |
4040 | ||
4041 | /* | |
4042 | * Rewrite the vdev configuration (which includes the uberblock) | |
4043 | * to commit the transaction group. | |
4044 | * | |
4045 | * If there are no dirty vdevs, we sync the uberblock to a few | |
4046 | * random top-level vdevs that are known to be visible in the | |
b128c09f BB |
4047 | * config cache (see spa_vdev_add() for a complete description). |
4048 | * If there *are* dirty vdevs, sync the uberblock to all vdevs. | |
34dc7c2f | 4049 | */ |
b128c09f BB |
4050 | for (;;) { |
4051 | /* | |
4052 | * We hold SCL_STATE to prevent vdev open/close/etc. | |
4053 | * while we're attempting to write the vdev labels. | |
4054 | */ | |
4055 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
4056 | ||
4057 | if (list_is_empty(&spa->spa_config_dirty_list)) { | |
4058 | vdev_t *svd[SPA_DVAS_PER_BP]; | |
4059 | int svdcount = 0; | |
4060 | int children = rvd->vdev_children; | |
4061 | int c0 = spa_get_random(children); | |
4062 | int c; | |
4063 | ||
4064 | for (c = 0; c < children; c++) { | |
4065 | vd = rvd->vdev_child[(c0 + c) % children]; | |
4066 | if (vd->vdev_ms_array == 0 || vd->vdev_islog) | |
4067 | continue; | |
4068 | svd[svdcount++] = vd; | |
4069 | if (svdcount == SPA_DVAS_PER_BP) | |
4070 | break; | |
4071 | } | |
4072 | error = vdev_config_sync(svd, svdcount, txg); | |
4073 | } else { | |
4074 | error = vdev_config_sync(rvd->vdev_child, | |
4075 | rvd->vdev_children, txg); | |
34dc7c2f | 4076 | } |
34dc7c2f | 4077 | |
b128c09f BB |
4078 | spa_config_exit(spa, SCL_STATE, FTAG); |
4079 | ||
4080 | if (error == 0) | |
4081 | break; | |
4082 | zio_suspend(spa, NULL); | |
4083 | zio_resume_wait(spa); | |
4084 | } | |
34dc7c2f BB |
4085 | dmu_tx_commit(tx); |
4086 | ||
4087 | /* | |
4088 | * Clear the dirty config list. | |
4089 | */ | |
b128c09f | 4090 | while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) |
34dc7c2f BB |
4091 | vdev_config_clean(vd); |
4092 | ||
4093 | /* | |
4094 | * Now that the new config has synced transactionally, | |
4095 | * let it become visible to the config cache. | |
4096 | */ | |
4097 | if (spa->spa_config_syncing != NULL) { | |
4098 | spa_config_set(spa, spa->spa_config_syncing); | |
4099 | spa->spa_config_txg = txg; | |
4100 | spa->spa_config_syncing = NULL; | |
4101 | } | |
4102 | ||
34dc7c2f | 4103 | spa->spa_ubsync = spa->spa_uberblock; |
34dc7c2f BB |
4104 | |
4105 | /* | |
4106 | * Clean up the ZIL records for the synced txg. | |
4107 | */ | |
4108 | dsl_pool_zil_clean(dp); | |
4109 | ||
4110 | /* | |
4111 | * Update usable space statistics. | |
4112 | */ | |
4113 | while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
4114 | vdev_sync_done(vd, txg); | |
4115 | ||
4116 | /* | |
4117 | * It had better be the case that we didn't dirty anything | |
4118 | * since vdev_config_sync(). | |
4119 | */ | |
4120 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
4121 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
4122 | ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
4123 | ASSERT(bpl->bpl_queue == NULL); | |
4124 | ||
b128c09f | 4125 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
4126 | |
4127 | /* | |
4128 | * If any async tasks have been requested, kick them off. | |
4129 | */ | |
4130 | spa_async_dispatch(spa); | |
4131 | } | |
4132 | ||
4133 | /* | |
4134 | * Sync all pools. We don't want to hold the namespace lock across these | |
4135 | * operations, so we take a reference on the spa_t and drop the lock during the | |
4136 | * sync. | |
4137 | */ | |
4138 | void | |
4139 | spa_sync_allpools(void) | |
4140 | { | |
4141 | spa_t *spa = NULL; | |
4142 | mutex_enter(&spa_namespace_lock); | |
4143 | while ((spa = spa_next(spa)) != NULL) { | |
b128c09f | 4144 | if (spa_state(spa) != POOL_STATE_ACTIVE || spa_suspended(spa)) |
34dc7c2f BB |
4145 | continue; |
4146 | spa_open_ref(spa, FTAG); | |
4147 | mutex_exit(&spa_namespace_lock); | |
4148 | txg_wait_synced(spa_get_dsl(spa), 0); | |
4149 | mutex_enter(&spa_namespace_lock); | |
4150 | spa_close(spa, FTAG); | |
4151 | } | |
4152 | mutex_exit(&spa_namespace_lock); | |
4153 | } | |
4154 | ||
4155 | /* | |
4156 | * ========================================================================== | |
4157 | * Miscellaneous routines | |
4158 | * ========================================================================== | |
4159 | */ | |
4160 | ||
4161 | /* | |
4162 | * Remove all pools in the system. | |
4163 | */ | |
4164 | void | |
4165 | spa_evict_all(void) | |
4166 | { | |
4167 | spa_t *spa; | |
4168 | ||
4169 | /* | |
4170 | * Remove all cached state. All pools should be closed now, | |
4171 | * so every spa in the AVL tree should be unreferenced. | |
4172 | */ | |
4173 | mutex_enter(&spa_namespace_lock); | |
4174 | while ((spa = spa_next(NULL)) != NULL) { | |
4175 | /* | |
4176 | * Stop async tasks. The async thread may need to detach | |
4177 | * a device that's been replaced, which requires grabbing | |
4178 | * spa_namespace_lock, so we must drop it here. | |
4179 | */ | |
4180 | spa_open_ref(spa, FTAG); | |
4181 | mutex_exit(&spa_namespace_lock); | |
4182 | spa_async_suspend(spa); | |
4183 | mutex_enter(&spa_namespace_lock); | |
34dc7c2f BB |
4184 | spa_close(spa, FTAG); |
4185 | ||
4186 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
4187 | spa_unload(spa); | |
4188 | spa_deactivate(spa); | |
4189 | } | |
4190 | spa_remove(spa); | |
4191 | } | |
4192 | mutex_exit(&spa_namespace_lock); | |
4193 | } | |
4194 | ||
4195 | vdev_t * | |
b128c09f | 4196 | spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t l2cache) |
34dc7c2f | 4197 | { |
b128c09f BB |
4198 | vdev_t *vd; |
4199 | int i; | |
4200 | ||
4201 | if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) | |
4202 | return (vd); | |
4203 | ||
4204 | if (l2cache) { | |
4205 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { | |
4206 | vd = spa->spa_l2cache.sav_vdevs[i]; | |
4207 | if (vd->vdev_guid == guid) | |
4208 | return (vd); | |
4209 | } | |
4210 | } | |
4211 | ||
4212 | return (NULL); | |
34dc7c2f BB |
4213 | } |
4214 | ||
4215 | void | |
4216 | spa_upgrade(spa_t *spa, uint64_t version) | |
4217 | { | |
b128c09f | 4218 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
4219 | |
4220 | /* | |
4221 | * This should only be called for a non-faulted pool, and since a | |
4222 | * future version would result in an unopenable pool, this shouldn't be | |
4223 | * possible. | |
4224 | */ | |
4225 | ASSERT(spa->spa_uberblock.ub_version <= SPA_VERSION); | |
4226 | ASSERT(version >= spa->spa_uberblock.ub_version); | |
4227 | ||
4228 | spa->spa_uberblock.ub_version = version; | |
4229 | vdev_config_dirty(spa->spa_root_vdev); | |
4230 | ||
b128c09f | 4231 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
4232 | |
4233 | txg_wait_synced(spa_get_dsl(spa), 0); | |
4234 | } | |
4235 | ||
4236 | boolean_t | |
4237 | spa_has_spare(spa_t *spa, uint64_t guid) | |
4238 | { | |
4239 | int i; | |
4240 | uint64_t spareguid; | |
4241 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
4242 | ||
4243 | for (i = 0; i < sav->sav_count; i++) | |
4244 | if (sav->sav_vdevs[i]->vdev_guid == guid) | |
4245 | return (B_TRUE); | |
4246 | ||
4247 | for (i = 0; i < sav->sav_npending; i++) { | |
4248 | if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
4249 | &spareguid) == 0 && spareguid == guid) | |
4250 | return (B_TRUE); | |
4251 | } | |
4252 | ||
4253 | return (B_FALSE); | |
4254 | } | |
4255 | ||
b128c09f BB |
4256 | /* |
4257 | * Check if a pool has an active shared spare device. | |
4258 | * Note: reference count of an active spare is 2, as a spare and as a replace | |
4259 | */ | |
4260 | static boolean_t | |
4261 | spa_has_active_shared_spare(spa_t *spa) | |
4262 | { | |
4263 | int i, refcnt; | |
4264 | uint64_t pool; | |
4265 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
4266 | ||
4267 | for (i = 0; i < sav->sav_count; i++) { | |
4268 | if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, | |
4269 | &refcnt) && pool != 0ULL && pool == spa_guid(spa) && | |
4270 | refcnt > 2) | |
4271 | return (B_TRUE); | |
4272 | } | |
4273 | ||
4274 | return (B_FALSE); | |
4275 | } | |
4276 | ||
34dc7c2f BB |
4277 | /* |
4278 | * Post a sysevent corresponding to the given event. The 'name' must be one of | |
4279 | * the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
4280 | * filled in from the spa and (optionally) the vdev. This doesn't do anything | |
4281 | * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
4282 | * or zdb as real changes. | |
4283 | */ | |
4284 | void | |
4285 | spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
4286 | { | |
4287 | #ifdef _KERNEL | |
4288 | sysevent_t *ev; | |
4289 | sysevent_attr_list_t *attr = NULL; | |
4290 | sysevent_value_t value; | |
4291 | sysevent_id_t eid; | |
4292 | ||
4293 | ev = sysevent_alloc(EC_ZFS, (char *)name, SUNW_KERN_PUB "zfs", | |
4294 | SE_SLEEP); | |
4295 | ||
4296 | value.value_type = SE_DATA_TYPE_STRING; | |
4297 | value.value.sv_string = spa_name(spa); | |
4298 | if (sysevent_add_attr(&attr, ZFS_EV_POOL_NAME, &value, SE_SLEEP) != 0) | |
4299 | goto done; | |
4300 | ||
4301 | value.value_type = SE_DATA_TYPE_UINT64; | |
4302 | value.value.sv_uint64 = spa_guid(spa); | |
4303 | if (sysevent_add_attr(&attr, ZFS_EV_POOL_GUID, &value, SE_SLEEP) != 0) | |
4304 | goto done; | |
4305 | ||
4306 | if (vd) { | |
4307 | value.value_type = SE_DATA_TYPE_UINT64; | |
4308 | value.value.sv_uint64 = vd->vdev_guid; | |
4309 | if (sysevent_add_attr(&attr, ZFS_EV_VDEV_GUID, &value, | |
4310 | SE_SLEEP) != 0) | |
4311 | goto done; | |
4312 | ||
4313 | if (vd->vdev_path) { | |
4314 | value.value_type = SE_DATA_TYPE_STRING; | |
4315 | value.value.sv_string = vd->vdev_path; | |
4316 | if (sysevent_add_attr(&attr, ZFS_EV_VDEV_PATH, | |
4317 | &value, SE_SLEEP) != 0) | |
4318 | goto done; | |
4319 | } | |
4320 | } | |
4321 | ||
4322 | if (sysevent_attach_attributes(ev, attr) != 0) | |
4323 | goto done; | |
4324 | attr = NULL; | |
4325 | ||
4326 | (void) log_sysevent(ev, SE_SLEEP, &eid); | |
4327 | ||
4328 | done: | |
4329 | if (attr) | |
4330 | sysevent_free_attr(attr); | |
4331 | sysevent_free(ev); | |
4332 | #endif | |
4333 | } |