Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/spa.c @ 6615:333cfc13ec55
6616599 vdev_config_sync(rvd, txg) == 0, file: ../../common/fs/zfs/spa .c, line: 3537
author | gw25295 |
---|---|
date | Mon, 12 May 2008 13:44:44 -0700 |
parents | 437422a29d3a |
children | 3a34b0dbb107 |
rev | line source |
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789 | 1 /* |
2 * CDDL HEADER START | |
3 * | |
4 * The contents of this file are subject to the terms of the | |
1544 | 5 * Common Development and Distribution License (the "License"). |
6 * You may not use this file except in compliance with the License. | |
789 | 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 */ | |
2082 | 21 |
789 | 22 /* |
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23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. |
789 | 24 * Use is subject to license terms. |
25 */ | |
26 | |
27 #pragma ident "%Z%%M% %I% %E% SMI" | |
28 | |
29 /* | |
30 * This file contains all the routines used when modifying on-disk SPA state. | |
31 * This includes opening, importing, destroying, exporting a pool, and syncing a | |
32 * pool. | |
33 */ | |
34 | |
35 #include <sys/zfs_context.h> | |
1544 | 36 #include <sys/fm/fs/zfs.h> |
789 | 37 #include <sys/spa_impl.h> |
38 #include <sys/zio.h> | |
39 #include <sys/zio_checksum.h> | |
40 #include <sys/zio_compress.h> | |
41 #include <sys/dmu.h> | |
42 #include <sys/dmu_tx.h> | |
43 #include <sys/zap.h> | |
44 #include <sys/zil.h> | |
45 #include <sys/vdev_impl.h> | |
46 #include <sys/metaslab.h> | |
47 #include <sys/uberblock_impl.h> | |
48 #include <sys/txg.h> | |
49 #include <sys/avl.h> | |
50 #include <sys/dmu_traverse.h> | |
3912 | 51 #include <sys/dmu_objset.h> |
789 | 52 #include <sys/unique.h> |
53 #include <sys/dsl_pool.h> | |
3912 | 54 #include <sys/dsl_dataset.h> |
789 | 55 #include <sys/dsl_dir.h> |
56 #include <sys/dsl_prop.h> | |
3912 | 57 #include <sys/dsl_synctask.h> |
789 | 58 #include <sys/fs/zfs.h> |
5450 | 59 #include <sys/arc.h> |
789 | 60 #include <sys/callb.h> |
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61 #include <sys/systeminfo.h> |
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62 #include <sys/sunddi.h> |
6423 | 63 #include <sys/spa_boot.h> |
789 | 64 |
5094 | 65 #include "zfs_prop.h" |
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66 #include "zfs_comutil.h" |
5094 | 67 |
2986 | 68 int zio_taskq_threads = 8; |
69 | |
5094 | 70 static void spa_sync_props(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx); |
71 | |
72 /* | |
73 * ========================================================================== | |
74 * SPA properties routines | |
75 * ========================================================================== | |
76 */ | |
77 | |
78 /* | |
79 * Add a (source=src, propname=propval) list to an nvlist. | |
80 */ | |
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81 static void |
5094 | 82 spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, |
83 uint64_t intval, zprop_source_t src) | |
84 { | |
85 const char *propname = zpool_prop_to_name(prop); | |
86 nvlist_t *propval; | |
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87 |
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88 VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
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89 VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); |
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90 |
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91 if (strval != NULL) |
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92 VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); |
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93 else |
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94 VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); |
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95 |
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96 VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); |
5094 | 97 nvlist_free(propval); |
98 } | |
99 | |
100 /* | |
101 * Get property values from the spa configuration. | |
102 */ | |
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103 static void |
5094 | 104 spa_prop_get_config(spa_t *spa, nvlist_t **nvp) |
105 { | |
106 uint64_t size = spa_get_space(spa); | |
107 uint64_t used = spa_get_alloc(spa); | |
108 uint64_t cap, version; | |
109 zprop_source_t src = ZPROP_SRC_NONE; | |
5363 | 110 char *cachefile; |
111 size_t len; | |
5094 | 112 |
113 /* | |
114 * readonly properties | |
115 */ | |
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116 spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa->spa_name, 0, src); |
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117 spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); |
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118 spa_prop_add_list(*nvp, ZPOOL_PROP_USED, NULL, used, src); |
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119 spa_prop_add_list(*nvp, ZPOOL_PROP_AVAILABLE, NULL, size - used, src); |
5094 | 120 |
121 cap = (size == 0) ? 0 : (used * 100 / size); | |
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122 spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); |
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123 |
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124 spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); |
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125 spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, |
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126 spa->spa_root_vdev->vdev_state, src); |
5094 | 127 |
128 /* | |
129 * settable properties that are not stored in the pool property object. | |
130 */ | |
131 version = spa_version(spa); | |
132 if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) | |
133 src = ZPROP_SRC_DEFAULT; | |
134 else | |
135 src = ZPROP_SRC_LOCAL; | |
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136 spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, version, src); |
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137 |
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138 if (spa->spa_root != NULL) |
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139 spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, |
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140 0, ZPROP_SRC_LOCAL); |
5094 | 141 |
5363 | 142 if (spa->spa_config_dir != NULL) { |
143 if (strcmp(spa->spa_config_dir, "none") == 0) { | |
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144 spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
5363 | 145 spa->spa_config_dir, 0, ZPROP_SRC_LOCAL); |
146 } else { | |
147 len = strlen(spa->spa_config_dir) + | |
148 strlen(spa->spa_config_file) + 2; | |
149 cachefile = kmem_alloc(len, KM_SLEEP); | |
150 (void) snprintf(cachefile, len, "%s/%s", | |
151 spa->spa_config_dir, spa->spa_config_file); | |
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152 spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
5363 | 153 cachefile, 0, ZPROP_SRC_LOCAL); |
154 kmem_free(cachefile, len); | |
155 } | |
156 } | |
5094 | 157 } |
158 | |
159 /* | |
160 * Get zpool property values. | |
161 */ | |
162 int | |
163 spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
164 { | |
165 zap_cursor_t zc; | |
166 zap_attribute_t za; | |
167 objset_t *mos = spa->spa_meta_objset; | |
168 int err; | |
169 | |
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170 VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
5094 | 171 |
172 /* | |
173 * Get properties from the spa config. | |
174 */ | |
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175 spa_prop_get_config(spa, nvp); |
5094 | 176 |
177 mutex_enter(&spa->spa_props_lock); | |
178 /* If no pool property object, no more prop to get. */ | |
179 if (spa->spa_pool_props_object == 0) { | |
180 mutex_exit(&spa->spa_props_lock); | |
181 return (0); | |
182 } | |
183 | |
184 /* | |
185 * Get properties from the MOS pool property object. | |
186 */ | |
187 for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
188 (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
189 zap_cursor_advance(&zc)) { | |
190 uint64_t intval = 0; | |
191 char *strval = NULL; | |
192 zprop_source_t src = ZPROP_SRC_DEFAULT; | |
193 zpool_prop_t prop; | |
194 | |
195 if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL) | |
196 continue; | |
197 | |
198 switch (za.za_integer_length) { | |
199 case 8: | |
200 /* integer property */ | |
201 if (za.za_first_integer != | |
202 zpool_prop_default_numeric(prop)) | |
203 src = ZPROP_SRC_LOCAL; | |
204 | |
205 if (prop == ZPOOL_PROP_BOOTFS) { | |
206 dsl_pool_t *dp; | |
207 dsl_dataset_t *ds = NULL; | |
208 | |
209 dp = spa_get_dsl(spa); | |
210 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
211 if (err = dsl_dataset_open_obj(dp, | |
212 za.za_first_integer, NULL, DS_MODE_NONE, | |
213 FTAG, &ds)) { | |
214 rw_exit(&dp->dp_config_rwlock); | |
215 break; | |
216 } | |
217 | |
218 strval = kmem_alloc( | |
219 MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, | |
220 KM_SLEEP); | |
221 dsl_dataset_name(ds, strval); | |
222 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); | |
223 rw_exit(&dp->dp_config_rwlock); | |
224 } else { | |
225 strval = NULL; | |
226 intval = za.za_first_integer; | |
227 } | |
228 | |
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229 spa_prop_add_list(*nvp, prop, strval, intval, src); |
5094 | 230 |
231 if (strval != NULL) | |
232 kmem_free(strval, | |
233 MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); | |
234 | |
235 break; | |
236 | |
237 case 1: | |
238 /* string property */ | |
239 strval = kmem_alloc(za.za_num_integers, KM_SLEEP); | |
240 err = zap_lookup(mos, spa->spa_pool_props_object, | |
241 za.za_name, 1, za.za_num_integers, strval); | |
242 if (err) { | |
243 kmem_free(strval, za.za_num_integers); | |
244 break; | |
245 } | |
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246 spa_prop_add_list(*nvp, prop, strval, 0, src); |
5094 | 247 kmem_free(strval, za.za_num_integers); |
248 break; | |
249 | |
250 default: | |
251 break; | |
252 } | |
253 } | |
254 zap_cursor_fini(&zc); | |
255 mutex_exit(&spa->spa_props_lock); | |
256 out: | |
257 if (err && err != ENOENT) { | |
258 nvlist_free(*nvp); | |
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259 *nvp = NULL; |
5094 | 260 return (err); |
261 } | |
262 | |
263 return (0); | |
264 } | |
265 | |
266 /* | |
267 * Validate the given pool properties nvlist and modify the list | |
268 * for the property values to be set. | |
269 */ | |
270 static int | |
271 spa_prop_validate(spa_t *spa, nvlist_t *props) | |
272 { | |
273 nvpair_t *elem; | |
274 int error = 0, reset_bootfs = 0; | |
275 uint64_t objnum; | |
276 | |
277 elem = NULL; | |
278 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
279 zpool_prop_t prop; | |
280 char *propname, *strval; | |
281 uint64_t intval; | |
282 vdev_t *rvdev; | |
283 char *vdev_type; | |
284 objset_t *os; | |
5363 | 285 char *slash; |
5094 | 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: | |
302 error = nvpair_value_uint64(elem, &intval); | |
303 if (!error && intval > 1) | |
304 error = EINVAL; | |
305 break; | |
306 | |
307 case ZPOOL_PROP_BOOTFS: | |
308 if (spa_version(spa) < SPA_VERSION_BOOTFS) { | |
309 error = ENOTSUP; | |
310 break; | |
311 } | |
312 | |
313 /* | |
314 * A bootable filesystem can not be on a RAIDZ pool | |
315 * nor a striped pool with more than 1 device. | |
316 */ | |
317 rvdev = spa->spa_root_vdev; | |
318 vdev_type = | |
319 rvdev->vdev_child[0]->vdev_ops->vdev_op_type; | |
320 if (rvdev->vdev_children > 1 || | |
321 strcmp(vdev_type, VDEV_TYPE_RAIDZ) == 0 || | |
322 strcmp(vdev_type, VDEV_TYPE_MISSING) == 0) { | |
323 error = ENOTSUP; | |
324 break; | |
325 } | |
326 | |
327 reset_bootfs = 1; | |
328 | |
329 error = nvpair_value_string(elem, &strval); | |
330 | |
331 if (!error) { | |
332 if (strval == NULL || strval[0] == '\0') { | |
333 objnum = zpool_prop_default_numeric( | |
334 ZPOOL_PROP_BOOTFS); | |
335 break; | |
336 } | |
337 | |
338 if (error = dmu_objset_open(strval, DMU_OST_ZFS, | |
339 DS_MODE_STANDARD | DS_MODE_READONLY, &os)) | |
340 break; | |
341 objnum = dmu_objset_id(os); | |
342 dmu_objset_close(os); | |
343 } | |
344 break; | |
5329 | 345 case ZPOOL_PROP_FAILUREMODE: |
346 error = nvpair_value_uint64(elem, &intval); | |
347 if (!error && (intval < ZIO_FAILURE_MODE_WAIT || | |
348 intval > ZIO_FAILURE_MODE_PANIC)) | |
349 error = EINVAL; | |
350 | |
351 /* | |
352 * This is a special case which only occurs when | |
353 * the pool has completely failed. This allows | |
354 * the user to change the in-core failmode property | |
355 * without syncing it out to disk (I/Os might | |
356 * currently be blocked). We do this by returning | |
357 * EIO to the caller (spa_prop_set) to trick it | |
358 * into thinking we encountered a property validation | |
359 * error. | |
360 */ | |
361 if (!error && spa_state(spa) == POOL_STATE_IO_FAILURE) { | |
362 spa->spa_failmode = intval; | |
363 error = EIO; | |
364 } | |
365 break; | |
5363 | 366 |
367 case ZPOOL_PROP_CACHEFILE: | |
368 if ((error = nvpair_value_string(elem, &strval)) != 0) | |
369 break; | |
370 | |
371 if (strval[0] == '\0') | |
372 break; | |
373 | |
374 if (strcmp(strval, "none") == 0) | |
375 break; | |
376 | |
377 if (strval[0] != '/') { | |
378 error = EINVAL; | |
379 break; | |
380 } | |
381 | |
382 slash = strrchr(strval, '/'); | |
383 ASSERT(slash != NULL); | |
384 | |
385 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
386 strcmp(slash, "/..") == 0) | |
387 error = EINVAL; | |
388 break; | |
5094 | 389 } |
390 | |
391 if (error) | |
392 break; | |
393 } | |
394 | |
395 if (!error && reset_bootfs) { | |
396 error = nvlist_remove(props, | |
397 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
398 | |
399 if (!error) { | |
400 error = nvlist_add_uint64(props, | |
401 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
402 } | |
403 } | |
404 | |
405 return (error); | |
406 } | |
407 | |
408 int | |
409 spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
410 { | |
411 int error; | |
412 | |
413 if ((error = spa_prop_validate(spa, nvp)) != 0) | |
414 return (error); | |
415 | |
416 return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props, | |
417 spa, nvp, 3)); | |
418 } | |
419 | |
420 /* | |
421 * If the bootfs property value is dsobj, clear it. | |
422 */ | |
423 void | |
424 spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
425 { | |
426 if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
427 VERIFY(zap_remove(spa->spa_meta_objset, | |
428 spa->spa_pool_props_object, | |
429 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
430 spa->spa_bootfs = 0; | |
431 } | |
432 } | |
433 | |
789 | 434 /* |
435 * ========================================================================== | |
436 * SPA state manipulation (open/create/destroy/import/export) | |
437 * ========================================================================== | |
438 */ | |
439 | |
1544 | 440 static int |
441 spa_error_entry_compare(const void *a, const void *b) | |
442 { | |
443 spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
444 spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
445 int ret; | |
446 | |
447 ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
448 sizeof (zbookmark_t)); | |
449 | |
450 if (ret < 0) | |
451 return (-1); | |
452 else if (ret > 0) | |
453 return (1); | |
454 else | |
455 return (0); | |
456 } | |
457 | |
458 /* | |
459 * Utility function which retrieves copies of the current logs and | |
460 * re-initializes them in the process. | |
461 */ | |
462 void | |
463 spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
464 { | |
465 ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
466 | |
467 bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
468 bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
469 | |
470 avl_create(&spa->spa_errlist_scrub, | |
471 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
472 offsetof(spa_error_entry_t, se_avl)); | |
473 avl_create(&spa->spa_errlist_last, | |
474 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
475 offsetof(spa_error_entry_t, se_avl)); | |
476 } | |
477 | |
789 | 478 /* |
479 * Activate an uninitialized pool. | |
480 */ | |
481 static void | |
482 spa_activate(spa_t *spa) | |
483 { | |
484 int t; | |
485 | |
486 ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
487 | |
488 spa->spa_state = POOL_STATE_ACTIVE; | |
489 | |
490 spa->spa_normal_class = metaslab_class_create(); | |
4527 | 491 spa->spa_log_class = metaslab_class_create(); |
789 | 492 |
493 for (t = 0; t < ZIO_TYPES; t++) { | |
494 spa->spa_zio_issue_taskq[t] = taskq_create("spa_zio_issue", | |
2986 | 495 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
789 | 496 TASKQ_PREPOPULATE); |
497 spa->spa_zio_intr_taskq[t] = taskq_create("spa_zio_intr", | |
2986 | 498 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
789 | 499 TASKQ_PREPOPULATE); |
500 } | |
501 | |
502 list_create(&spa->spa_dirty_list, sizeof (vdev_t), | |
503 offsetof(vdev_t, vdev_dirty_node)); | |
5329 | 504 list_create(&spa->spa_zio_list, sizeof (zio_t), |
505 offsetof(zio_t, zio_link_node)); | |
789 | 506 |
507 txg_list_create(&spa->spa_vdev_txg_list, | |
508 offsetof(struct vdev, vdev_txg_node)); | |
1544 | 509 |
510 avl_create(&spa->spa_errlist_scrub, | |
511 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
512 offsetof(spa_error_entry_t, se_avl)); | |
513 avl_create(&spa->spa_errlist_last, | |
514 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
515 offsetof(spa_error_entry_t, se_avl)); | |
789 | 516 } |
517 | |
518 /* | |
519 * Opposite of spa_activate(). | |
520 */ | |
521 static void | |
522 spa_deactivate(spa_t *spa) | |
523 { | |
524 int t; | |
525 | |
526 ASSERT(spa->spa_sync_on == B_FALSE); | |
527 ASSERT(spa->spa_dsl_pool == NULL); | |
528 ASSERT(spa->spa_root_vdev == NULL); | |
529 | |
530 ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); | |
531 | |
532 txg_list_destroy(&spa->spa_vdev_txg_list); | |
533 | |
534 list_destroy(&spa->spa_dirty_list); | |
5329 | 535 list_destroy(&spa->spa_zio_list); |
789 | 536 |
537 for (t = 0; t < ZIO_TYPES; t++) { | |
538 taskq_destroy(spa->spa_zio_issue_taskq[t]); | |
539 taskq_destroy(spa->spa_zio_intr_taskq[t]); | |
540 spa->spa_zio_issue_taskq[t] = NULL; | |
541 spa->spa_zio_intr_taskq[t] = NULL; | |
542 } | |
543 | |
544 metaslab_class_destroy(spa->spa_normal_class); | |
545 spa->spa_normal_class = NULL; | |
546 | |
4527 | 547 metaslab_class_destroy(spa->spa_log_class); |
548 spa->spa_log_class = NULL; | |
549 | |
1544 | 550 /* |
551 * If this was part of an import or the open otherwise failed, we may | |
552 * still have errors left in the queues. Empty them just in case. | |
553 */ | |
554 spa_errlog_drain(spa); | |
555 | |
556 avl_destroy(&spa->spa_errlist_scrub); | |
557 avl_destroy(&spa->spa_errlist_last); | |
558 | |
789 | 559 spa->spa_state = POOL_STATE_UNINITIALIZED; |
560 } | |
561 | |
562 /* | |
563 * Verify a pool configuration, and construct the vdev tree appropriately. This | |
564 * will create all the necessary vdevs in the appropriate layout, with each vdev | |
565 * in the CLOSED state. This will prep the pool before open/creation/import. | |
566 * All vdev validation is done by the vdev_alloc() routine. | |
567 */ | |
2082 | 568 static int |
569 spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
570 uint_t id, int atype) | |
789 | 571 { |
572 nvlist_t **child; | |
573 uint_t c, children; | |
2082 | 574 int error; |
575 | |
576 if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
577 return (error); | |
578 | |
579 if ((*vdp)->vdev_ops->vdev_op_leaf) | |
580 return (0); | |
789 | 581 |
582 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
583 &child, &children) != 0) { | |
2082 | 584 vdev_free(*vdp); |
585 *vdp = NULL; | |
586 return (EINVAL); | |
789 | 587 } |
588 | |
589 for (c = 0; c < children; c++) { | |
2082 | 590 vdev_t *vd; |
591 if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
592 atype)) != 0) { | |
593 vdev_free(*vdp); | |
594 *vdp = NULL; | |
595 return (error); | |
789 | 596 } |
597 } | |
598 | |
2082 | 599 ASSERT(*vdp != NULL); |
600 | |
601 return (0); | |
789 | 602 } |
603 | |
604 /* | |
605 * Opposite of spa_load(). | |
606 */ | |
607 static void | |
608 spa_unload(spa_t *spa) | |
609 { | |
2082 | 610 int i; |
611 | |
789 | 612 /* |
1544 | 613 * Stop async tasks. |
614 */ | |
615 spa_async_suspend(spa); | |
616 | |
617 /* | |
789 | 618 * Stop syncing. |
619 */ | |
620 if (spa->spa_sync_on) { | |
621 txg_sync_stop(spa->spa_dsl_pool); | |
622 spa->spa_sync_on = B_FALSE; | |
623 } | |
624 | |
625 /* | |
626 * Wait for any outstanding prefetch I/O to complete. | |
627 */ | |
1544 | 628 spa_config_enter(spa, RW_WRITER, FTAG); |
629 spa_config_exit(spa, FTAG); | |
789 | 630 |
631 /* | |
5450 | 632 * Drop and purge level 2 cache |
633 */ | |
634 spa_l2cache_drop(spa); | |
635 | |
636 /* | |
789 | 637 * Close the dsl pool. |
638 */ | |
639 if (spa->spa_dsl_pool) { | |
640 dsl_pool_close(spa->spa_dsl_pool); | |
641 spa->spa_dsl_pool = NULL; | |
642 } | |
643 | |
644 /* | |
645 * Close all vdevs. | |
646 */ | |
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647 if (spa->spa_root_vdev) |
789 | 648 vdev_free(spa->spa_root_vdev); |
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649 ASSERT(spa->spa_root_vdev == NULL); |
1544 | 650 |
5450 | 651 for (i = 0; i < spa->spa_spares.sav_count; i++) |
652 vdev_free(spa->spa_spares.sav_vdevs[i]); | |
653 if (spa->spa_spares.sav_vdevs) { | |
654 kmem_free(spa->spa_spares.sav_vdevs, | |
655 spa->spa_spares.sav_count * sizeof (void *)); | |
656 spa->spa_spares.sav_vdevs = NULL; | |
657 } | |
658 if (spa->spa_spares.sav_config) { | |
659 nvlist_free(spa->spa_spares.sav_config); | |
660 spa->spa_spares.sav_config = NULL; | |
2082 | 661 } |
5450 | 662 |
663 for (i = 0; i < spa->spa_l2cache.sav_count; i++) | |
664 vdev_free(spa->spa_l2cache.sav_vdevs[i]); | |
665 if (spa->spa_l2cache.sav_vdevs) { | |
666 kmem_free(spa->spa_l2cache.sav_vdevs, | |
667 spa->spa_l2cache.sav_count * sizeof (void *)); | |
668 spa->spa_l2cache.sav_vdevs = NULL; | |
669 } | |
670 if (spa->spa_l2cache.sav_config) { | |
671 nvlist_free(spa->spa_l2cache.sav_config); | |
672 spa->spa_l2cache.sav_config = NULL; | |
2082 | 673 } |
674 | |
1544 | 675 spa->spa_async_suspended = 0; |
789 | 676 } |
677 | |
678 /* | |
2082 | 679 * Load (or re-load) the current list of vdevs describing the active spares for |
680 * this pool. When this is called, we have some form of basic information in | |
5450 | 681 * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and |
682 * then re-generate a more complete list including status information. | |
2082 | 683 */ |
684 static void | |
685 spa_load_spares(spa_t *spa) | |
686 { | |
687 nvlist_t **spares; | |
688 uint_t nspares; | |
689 int i; | |
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690 vdev_t *vd, *tvd; |
2082 | 691 |
692 /* | |
693 * First, close and free any existing spare vdevs. | |
694 */ | |
5450 | 695 for (i = 0; i < spa->spa_spares.sav_count; i++) { |
696 vd = spa->spa_spares.sav_vdevs[i]; | |
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697 |
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698 /* Undo the call to spa_activate() below */ |
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699 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL && |
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700 tvd->vdev_isspare) |
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701 spa_spare_remove(tvd); |
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702 vdev_close(vd); |
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703 vdev_free(vd); |
2082 | 704 } |
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705 |
5450 | 706 if (spa->spa_spares.sav_vdevs) |
707 kmem_free(spa->spa_spares.sav_vdevs, | |
708 spa->spa_spares.sav_count * sizeof (void *)); | |
709 | |
710 if (spa->spa_spares.sav_config == NULL) | |
2082 | 711 nspares = 0; |
712 else | |
5450 | 713 VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, |
2082 | 714 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); |
715 | |
5450 | 716 spa->spa_spares.sav_count = (int)nspares; |
717 spa->spa_spares.sav_vdevs = NULL; | |
2082 | 718 |
719 if (nspares == 0) | |
720 return; | |
721 | |
722 /* | |
723 * Construct the array of vdevs, opening them to get status in the | |
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724 * process. For each spare, there is potentially two different vdev_t |
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725 * structures associated with it: one in the list of spares (used only |
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726 * for basic validation purposes) and one in the active vdev |
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727 * configuration (if it's spared in). During this phase we open and |
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728 * validate each vdev on the spare list. If the vdev also exists in the |
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729 * active configuration, then we also mark this vdev as an active spare. |
2082 | 730 */ |
5450 | 731 spa->spa_spares.sav_vdevs = kmem_alloc(nspares * sizeof (void *), |
732 KM_SLEEP); | |
733 for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
2082 | 734 VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, |
735 VDEV_ALLOC_SPARE) == 0); | |
736 ASSERT(vd != NULL); | |
737 | |
5450 | 738 spa->spa_spares.sav_vdevs[i] = vd; |
2082 | 739 |
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740 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL) { |
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741 if (!tvd->vdev_isspare) |
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742 spa_spare_add(tvd); |
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743 |
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744 /* |
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745 * We only mark the spare active if we were successfully |
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746 * able to load the vdev. Otherwise, importing a pool |
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747 * with a bad active spare would result in strange |
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748 * behavior, because multiple pool would think the spare |
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749 * is actively in use. |
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750 * |
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751 * There is a vulnerability here to an equally bizarre |
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752 * circumstance, where a dead active spare is later |
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753 * brought back to life (onlined or otherwise). Given |
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754 * the rarity of this scenario, and the extra complexity |
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755 * it adds, we ignore the possibility. |
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756 */ |
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757 if (!vdev_is_dead(tvd)) |
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758 spa_spare_activate(tvd); |
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759 } |
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760 |
2082 | 761 if (vdev_open(vd) != 0) |
762 continue; | |
763 | |
764 vd->vdev_top = vd; | |
5450 | 765 if (vdev_validate_aux(vd) == 0) |
766 spa_spare_add(vd); | |
2082 | 767 } |
768 | |
769 /* | |
770 * Recompute the stashed list of spares, with status information | |
771 * this time. | |
772 */ | |
5450 | 773 VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, |
2082 | 774 DATA_TYPE_NVLIST_ARRAY) == 0); |
775 | |
5450 | 776 spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), |
777 KM_SLEEP); | |
778 for (i = 0; i < spa->spa_spares.sav_count; i++) | |
779 spares[i] = vdev_config_generate(spa, | |
780 spa->spa_spares.sav_vdevs[i], B_TRUE, B_TRUE, B_FALSE); | |
781 VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, | |
782 ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
783 for (i = 0; i < spa->spa_spares.sav_count; i++) | |
2082 | 784 nvlist_free(spares[i]); |
5450 | 785 kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); |
786 } | |
787 | |
788 /* | |
789 * Load (or re-load) the current list of vdevs describing the active l2cache for | |
790 * this pool. When this is called, we have some form of basic information in | |
791 * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
792 * then re-generate a more complete list including status information. | |
793 * Devices which are already active have their details maintained, and are | |
794 * not re-opened. | |
795 */ | |
796 static void | |
797 spa_load_l2cache(spa_t *spa) | |
798 { | |
799 nvlist_t **l2cache; | |
800 uint_t nl2cache; | |
801 int i, j, oldnvdevs; | |
802 uint64_t guid; | |
803 vdev_t *vd, **oldvdevs, **newvdevs; | |
804 spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
805 | |
806 if (sav->sav_config != NULL) { | |
807 VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
808 ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
809 newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); | |
810 } else { | |
811 nl2cache = 0; | |
812 } | |
813 | |
814 oldvdevs = sav->sav_vdevs; | |
815 oldnvdevs = sav->sav_count; | |
816 sav->sav_vdevs = NULL; | |
817 sav->sav_count = 0; | |
818 | |
819 /* | |
820 * Process new nvlist of vdevs. | |
821 */ | |
822 for (i = 0; i < nl2cache; i++) { | |
823 VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
824 &guid) == 0); | |
825 | |
826 newvdevs[i] = NULL; | |
827 for (j = 0; j < oldnvdevs; j++) { | |
828 vd = oldvdevs[j]; | |
829 if (vd != NULL && guid == vd->vdev_guid) { | |
830 /* | |
831 * Retain previous vdev for add/remove ops. | |
832 */ | |
833 newvdevs[i] = vd; | |
834 oldvdevs[j] = NULL; | |
835 break; | |
836 } | |
837 } | |
838 | |
839 if (newvdevs[i] == NULL) { | |
840 /* | |
841 * Create new vdev | |
842 */ | |
843 VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
844 VDEV_ALLOC_L2CACHE) == 0); | |
845 ASSERT(vd != NULL); | |
846 newvdevs[i] = vd; | |
847 | |
848 /* | |
849 * Commit this vdev as an l2cache device, | |
850 * even if it fails to open. | |
851 */ | |
852 spa_l2cache_add(vd); | |
853 | |
854 if (vdev_open(vd) != 0) | |
855 continue; | |
856 | |
857 vd->vdev_top = vd; | |
858 (void) vdev_validate_aux(vd); | |
859 | |
860 if (!vdev_is_dead(vd)) { | |
861 uint64_t size; | |
862 size = vdev_get_rsize(vd); | |
863 ASSERT3U(size, >, 0); | |
864 if (spa_mode & FWRITE) { | |
865 l2arc_add_vdev(spa, vd, | |
866 VDEV_LABEL_START_SIZE, | |
867 size - VDEV_LABEL_START_SIZE); | |
868 } | |
869 spa_l2cache_activate(vd); | |
870 } | |
871 } | |
872 } | |
873 | |
874 /* | |
875 * Purge vdevs that were dropped | |
876 */ | |
877 for (i = 0; i < oldnvdevs; i++) { | |
878 uint64_t pool; | |
879 | |
880 vd = oldvdevs[i]; | |
881 if (vd != NULL) { | |
882 if (spa_mode & FWRITE && | |
883 spa_l2cache_exists(vd->vdev_guid, &pool) && | |
884 pool != 0ULL) { | |
885 l2arc_remove_vdev(vd); | |
886 } | |
887 (void) vdev_close(vd); | |
888 spa_l2cache_remove(vd); | |
889 } | |
890 } | |
891 | |
892 if (oldvdevs) | |
893 kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
894 | |
895 if (sav->sav_config == NULL) | |
896 goto out; | |
897 | |
898 sav->sav_vdevs = newvdevs; | |
899 sav->sav_count = (int)nl2cache; | |
900 | |
901 /* | |
902 * Recompute the stashed list of l2cache devices, with status | |
903 * information this time. | |
904 */ | |
905 VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
906 DATA_TYPE_NVLIST_ARRAY) == 0); | |
907 | |
908 l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); | |
909 for (i = 0; i < sav->sav_count; i++) | |
910 l2cache[i] = vdev_config_generate(spa, | |
911 sav->sav_vdevs[i], B_TRUE, B_FALSE, B_TRUE); | |
912 VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
913 ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
914 out: | |
915 for (i = 0; i < sav->sav_count; i++) | |
916 nvlist_free(l2cache[i]); | |
917 if (sav->sav_count) | |
918 kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
2082 | 919 } |
920 | |
921 static int | |
922 load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
923 { | |
924 dmu_buf_t *db; | |
925 char *packed = NULL; | |
926 size_t nvsize = 0; | |
927 int error; | |
928 *value = NULL; | |
929 | |
930 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
931 nvsize = *(uint64_t *)db->db_data; | |
932 dmu_buf_rele(db, FTAG); | |
933 | |
934 packed = kmem_alloc(nvsize, KM_SLEEP); | |
935 error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed); | |
936 if (error == 0) | |
937 error = nvlist_unpack(packed, nvsize, value, 0); | |
938 kmem_free(packed, nvsize); | |
939 | |
940 return (error); | |
941 } | |
942 | |
943 /* | |
4451 | 944 * Checks to see if the given vdev could not be opened, in which case we post a |
945 * sysevent to notify the autoreplace code that the device has been removed. | |
946 */ | |
947 static void | |
948 spa_check_removed(vdev_t *vd) | |
949 { | |
950 int c; | |
951 | |
952 for (c = 0; c < vd->vdev_children; c++) | |
953 spa_check_removed(vd->vdev_child[c]); | |
954 | |
955 if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd)) { | |
956 zfs_post_autoreplace(vd->vdev_spa, vd); | |
957 spa_event_notify(vd->vdev_spa, vd, ESC_ZFS_VDEV_CHECK); | |
958 } | |
959 } | |
960 | |
961 /* | |
789 | 962 * Load an existing storage pool, using the pool's builtin spa_config as a |
1544 | 963 * source of configuration information. |
789 | 964 */ |
965 static int | |
1544 | 966 spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig) |
789 | 967 { |
968 int error = 0; | |
969 nvlist_t *nvroot = NULL; | |
970 vdev_t *rvd; | |
971 uberblock_t *ub = &spa->spa_uberblock; | |
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972 uint64_t config_cache_txg = spa->spa_config_txg; |
789 | 973 uint64_t pool_guid; |
2082 | 974 uint64_t version; |
789 | 975 zio_t *zio; |
4451 | 976 uint64_t autoreplace = 0; |
789 | 977 |
1544 | 978 spa->spa_load_state = state; |
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979 |
789 | 980 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) || |
1733 | 981 nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { |
1544 | 982 error = EINVAL; |
983 goto out; | |
984 } | |
789 | 985 |
2082 | 986 /* |
987 * Versioning wasn't explicitly added to the label until later, so if | |
988 * it's not present treat it as the initial version. | |
989 */ | |
990 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0) | |
4577 | 991 version = SPA_VERSION_INITIAL; |
2082 | 992 |
1733 | 993 (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, |
994 &spa->spa_config_txg); | |
995 | |
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996 if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && |
1544 | 997 spa_guid_exists(pool_guid, 0)) { |
998 error = EEXIST; | |
999 goto out; | |
1000 } | |
789 | 1001 |
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1002 spa->spa_load_guid = pool_guid; |
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1003 |
789 | 1004 /* |
2082 | 1005 * Parse the configuration into a vdev tree. We explicitly set the |
1006 * value that will be returned by spa_version() since parsing the | |
1007 * configuration requires knowing the version number. | |
789 | 1008 */ |
1544 | 1009 spa_config_enter(spa, RW_WRITER, FTAG); |
2082 | 1010 spa->spa_ubsync.ub_version = version; |
1011 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD); | |
1544 | 1012 spa_config_exit(spa, FTAG); |
789 | 1013 |
2082 | 1014 if (error != 0) |
1544 | 1015 goto out; |
789 | 1016 |
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6395480 ztest ASSERT: rbt.bt_objset == wbt.bt_objset, line 2041
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1017 ASSERT(spa->spa_root_vdev == rvd); |
789 | 1018 ASSERT(spa_guid(spa) == pool_guid); |
1019 | |
1020 /* | |
1021 * Try to open all vdevs, loading each label in the process. | |
1022 */ | |
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1023 error = vdev_open(rvd); |
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1024 if (error != 0) |
1544 | 1025 goto out; |
789 | 1026 |
1027 /* | |
1986
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1028 * Validate the labels for all leaf vdevs. We need to grab the config |
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1029 * lock because all label I/O is done with the ZIO_FLAG_CONFIG_HELD |
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|
1030 * flag. |
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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|
1031 */ |
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|
1032 spa_config_enter(spa, RW_READER, FTAG); |
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1033 error = vdev_validate(rvd); |
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1034 spa_config_exit(spa, FTAG); |
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1035 |
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1036 if (error != 0) |
1986
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1037 goto out; |
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|
1038 |
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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1039 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
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1040 error = ENXIO; |
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|
1041 goto out; |
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|
1042 } |
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1043 |
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|
1044 /* |
789 | 1045 * Find the best uberblock. |
1046 */ | |
1047 bzero(ub, sizeof (uberblock_t)); | |
1048 | |
1049 zio = zio_root(spa, NULL, NULL, | |
1050 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
1051 vdev_uberblock_load(zio, rvd, ub); | |
1052 error = zio_wait(zio); | |
1053 | |
1054 /* | |
1055 * If we weren't able to find a single valid uberblock, return failure. | |
1056 */ | |
1057 if (ub->ub_txg == 0) { | |
1760 | 1058 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1059 VDEV_AUX_CORRUPT_DATA); | |
1544 | 1060 error = ENXIO; |
1061 goto out; | |
1062 } | |
1063 | |
1064 /* | |
1065 * If the pool is newer than the code, we can't open it. | |
1066 */ | |
4577 | 1067 if (ub->ub_version > SPA_VERSION) { |
1760 | 1068 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1069 VDEV_AUX_VERSION_NEWER); | |
1544 | 1070 error = ENOTSUP; |
1071 goto out; | |
789 | 1072 } |
1073 | |
1074 /* | |
1075 * If the vdev guid sum doesn't match the uberblock, we have an | |
1076 * incomplete configuration. | |
1077 */ | |
1732 | 1078 if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) { |
1544 | 1079 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1080 VDEV_AUX_BAD_GUID_SUM); | |
1081 error = ENXIO; | |
1082 goto out; | |
789 | 1083 } |
1084 | |
1085 /* | |
1086 * Initialize internal SPA structures. | |
1087 */ | |
1088 spa->spa_state = POOL_STATE_ACTIVE; | |
1089 spa->spa_ubsync = spa->spa_uberblock; | |
1090 spa->spa_first_txg = spa_last_synced_txg(spa) + 1; | |
1544 | 1091 error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
1092 if (error) { | |
1093 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1094 VDEV_AUX_CORRUPT_DATA); | |
1095 goto out; | |
1096 } | |
789 | 1097 spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
1098 | |
1544 | 1099 if (zap_lookup(spa->spa_meta_objset, |
789 | 1100 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
1544 | 1101 sizeof (uint64_t), 1, &spa->spa_config_object) != 0) { |
1102 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1103 VDEV_AUX_CORRUPT_DATA); | |
1104 error = EIO; | |
1105 goto out; | |
1106 } | |
789 | 1107 |
1108 if (!mosconfig) { | |
2082 | 1109 nvlist_t *newconfig; |
3975
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6282725 hostname/hostid should be stored in the label
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1110 uint64_t hostid; |
2082 | 1111 |
1112 if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) { | |
1544 | 1113 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1114 VDEV_AUX_CORRUPT_DATA); | |
1115 error = EIO; | |
1116 goto out; | |
1117 } | |
789 | 1118 |
3975
6674f5d79069
6282725 hostname/hostid should be stored in the label
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3912
diff
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|
1119 if (nvlist_lookup_uint64(newconfig, ZPOOL_CONFIG_HOSTID, |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1120 &hostid) == 0) { |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1121 char *hostname; |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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3912
diff
changeset
|
1122 unsigned long myhostid = 0; |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
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|
1123 |
6674f5d79069
6282725 hostname/hostid should be stored in the label
ek110237
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3912
diff
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|
1124 VERIFY(nvlist_lookup_string(newconfig, |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
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|
1125 ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1126 |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
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|
1127 (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); |
4178
ad95fd86760b
6553537 zfs root fails to boot from a snv_63+zfsboot-pfinstall netinstall image
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diff
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|
1128 if (hostid != 0 && myhostid != 0 && |
ad95fd86760b
6553537 zfs root fails to boot from a snv_63+zfsboot-pfinstall netinstall image
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diff
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|
1129 (unsigned long)hostid != myhostid) { |
3975
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
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|
1130 cmn_err(CE_WARN, "pool '%s' could not be " |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
changeset
|
1131 "loaded as it was last accessed by " |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1132 "another system (host: %s hostid: 0x%lx). " |
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6282725 hostname/hostid should be stored in the label
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changeset
|
1133 "See: http://www.sun.com/msg/ZFS-8000-EY", |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
changeset
|
1134 spa->spa_name, hostname, |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1135 (unsigned long)hostid); |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1136 error = EBADF; |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
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|
1137 goto out; |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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diff
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|
1138 } |
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
1139 } |
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6282725 hostname/hostid should be stored in the label
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|
1140 |
789 | 1141 spa_config_set(spa, newconfig); |
1142 spa_unload(spa); | |
1143 spa_deactivate(spa); | |
1144 spa_activate(spa); | |
1145 | |
1544 | 1146 return (spa_load(spa, newconfig, state, B_TRUE)); |
1147 } | |
1148 | |
1149 if (zap_lookup(spa->spa_meta_objset, | |
1150 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
1151 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) { | |
1152 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1153 VDEV_AUX_CORRUPT_DATA); | |
1154 error = EIO; | |
1155 goto out; | |
789 | 1156 } |
1157 | |
1544 | 1158 /* |
2082 | 1159 * Load the bit that tells us to use the new accounting function |
1160 * (raid-z deflation). If we have an older pool, this will not | |
1161 * be present. | |
1162 */ | |
1163 error = zap_lookup(spa->spa_meta_objset, | |
1164 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
1165 sizeof (uint64_t), 1, &spa->spa_deflate); | |
1166 if (error != 0 && error != ENOENT) { | |
1167 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1168 VDEV_AUX_CORRUPT_DATA); | |
1169 error = EIO; | |
1170 goto out; | |
1171 } | |
1172 | |
1173 /* | |
1544 | 1174 * Load the persistent error log. If we have an older pool, this will |
1175 * not be present. | |
1176 */ | |
1177 error = zap_lookup(spa->spa_meta_objset, | |
1178 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST, | |
1179 sizeof (uint64_t), 1, &spa->spa_errlog_last); | |
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1180 if (error != 0 && error != ENOENT) { |
1544 | 1181 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1182 VDEV_AUX_CORRUPT_DATA); | |
1183 error = EIO; | |
1184 goto out; | |
1185 } | |
1186 | |
1187 error = zap_lookup(spa->spa_meta_objset, | |
1188 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB, | |
1189 sizeof (uint64_t), 1, &spa->spa_errlog_scrub); | |
1190 if (error != 0 && error != ENOENT) { | |
1191 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1192 VDEV_AUX_CORRUPT_DATA); | |
1193 error = EIO; | |
1194 goto out; | |
1195 } | |
789 | 1196 |
1197 /* | |
2926 | 1198 * Load the history object. If we have an older pool, this |
1199 * will not be present. | |
1200 */ | |
1201 error = zap_lookup(spa->spa_meta_objset, | |
1202 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY, | |
1203 sizeof (uint64_t), 1, &spa->spa_history); | |
1204 if (error != 0 && error != ENOENT) { | |
1205 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1206 VDEV_AUX_CORRUPT_DATA); | |
1207 error = EIO; | |
1208 goto out; | |
1209 } | |
1210 | |
1211 /* | |
2082 | 1212 * Load any hot spares for this pool. |
1213 */ | |
1214 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
5450 | 1215 DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares.sav_object); |
2082 | 1216 if (error != 0 && error != ENOENT) { |
1217 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1218 VDEV_AUX_CORRUPT_DATA); | |
1219 error = EIO; | |
1220 goto out; | |
1221 } | |
1222 if (error == 0) { | |
4577 | 1223 ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); |
5450 | 1224 if (load_nvlist(spa, spa->spa_spares.sav_object, |
1225 &spa->spa_spares.sav_config) != 0) { | |
2082 | 1226 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1227 VDEV_AUX_CORRUPT_DATA); | |
1228 error = EIO; | |
1229 goto out; | |
1230 } | |
1231 | |
1232 spa_config_enter(spa, RW_WRITER, FTAG); | |
1233 spa_load_spares(spa); | |
1234 spa_config_exit(spa, FTAG); | |
1235 } | |
1236 | |
5450 | 1237 /* |
1238 * Load any level 2 ARC devices for this pool. | |
1239 */ | |
1240 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
1241 DMU_POOL_L2CACHE, sizeof (uint64_t), 1, | |
1242 &spa->spa_l2cache.sav_object); | |
1243 if (error != 0 && error != ENOENT) { | |
1244 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1245 VDEV_AUX_CORRUPT_DATA); | |
1246 error = EIO; | |
1247 goto out; | |
1248 } | |
1249 if (error == 0) { | |
1250 ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); | |
1251 if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
1252 &spa->spa_l2cache.sav_config) != 0) { | |
1253 vdev_set_state(rvd, B_TRUE, | |
1254 VDEV_STATE_CANT_OPEN, | |
1255 VDEV_AUX_CORRUPT_DATA); | |
1256 error = EIO; | |
1257 goto out; | |
1258 } | |
1259 | |
1260 spa_config_enter(spa, RW_WRITER, FTAG); | |
1261 spa_load_l2cache(spa); | |
1262 spa_config_exit(spa, FTAG); | |
1263 } | |
1264 | |
5094 | 1265 spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
4543 | 1266 |
3912 | 1267 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, |
1268 DMU_POOL_PROPS, sizeof (uint64_t), 1, &spa->spa_pool_props_object); | |
1269 | |
1270 if (error && 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 | |
1277 if (error == 0) { | |
1278 (void) zap_lookup(spa->spa_meta_objset, | |
1279 spa->spa_pool_props_object, | |
4451 | 1280 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), |
3912 | 1281 sizeof (uint64_t), 1, &spa->spa_bootfs); |
4451 | 1282 (void) zap_lookup(spa->spa_meta_objset, |
1283 spa->spa_pool_props_object, | |
1284 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), | |
1285 sizeof (uint64_t), 1, &autoreplace); | |
4543 | 1286 (void) zap_lookup(spa->spa_meta_objset, |
1287 spa->spa_pool_props_object, | |
1288 zpool_prop_to_name(ZPOOL_PROP_DELEGATION), | |
1289 sizeof (uint64_t), 1, &spa->spa_delegation); | |
5329 | 1290 (void) zap_lookup(spa->spa_meta_objset, |
1291 spa->spa_pool_props_object, | |
1292 zpool_prop_to_name(ZPOOL_PROP_FAILUREMODE), | |
1293 sizeof (uint64_t), 1, &spa->spa_failmode); | |
3912 | 1294 } |
1295 | |
2082 | 1296 /* |
4451 | 1297 * If the 'autoreplace' property is set, then post a resource notifying |
1298 * the ZFS DE that it should not issue any faults for unopenable | |
1299 * devices. We also iterate over the vdevs, and post a sysevent for any | |
1300 * unopenable vdevs so that the normal autoreplace handler can take | |
1301 * over. | |
1302 */ | |
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1303 if (autoreplace && state != SPA_LOAD_TRYIMPORT) |
4451 | 1304 spa_check_removed(spa->spa_root_vdev); |
1305 | |
1306 /* | |
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1307 * Load the vdev state for all toplevel vdevs. |
789 | 1308 */ |
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1309 vdev_load(rvd); |
789 | 1310 |
1311 /* | |
1312 * Propagate the leaf DTLs we just loaded all the way up the tree. | |
1313 */ | |
1544 | 1314 spa_config_enter(spa, RW_WRITER, FTAG); |
789 | 1315 vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
1544 | 1316 spa_config_exit(spa, FTAG); |
789 | 1317 |
1318 /* | |
1319 * Check the state of the root vdev. If it can't be opened, it | |
1320 * indicates one or more toplevel vdevs are faulted. | |
1321 */ | |
1544 | 1322 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
1323 error = ENXIO; | |
1324 goto out; | |
1325 } | |
789 | 1326 |
1544 | 1327 if ((spa_mode & FWRITE) && state != SPA_LOAD_TRYIMPORT) { |
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1328 dmu_tx_t *tx; |
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1329 int need_update = B_FALSE; |
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1330 int c; |
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1331 |
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1332 /* |
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1333 * Claim log blocks that haven't been committed yet. |
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1334 * This must all happen in a single txg. |
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1335 */ |
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1336 tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
789 | 1337 spa_first_txg(spa)); |
2417 | 1338 (void) dmu_objset_find(spa->spa_name, |
1339 zil_claim, tx, DS_FIND_CHILDREN); | |
789 | 1340 dmu_tx_commit(tx); |
1341 | |
1342 spa->spa_sync_on = B_TRUE; | |
1343 txg_sync_start(spa->spa_dsl_pool); | |
1344 | |
1345 /* | |
1346 * Wait for all claims to sync. | |
1347 */ | |
1348 txg_wait_synced(spa->spa_dsl_pool, 0); | |
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1349 |
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1350 /* |
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1351 * If the config cache is stale, or we have uninitialized |
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1352 * metaslabs (see spa_vdev_add()), then update the config. |
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1353 */ |
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1354 if (config_cache_txg != spa->spa_config_txg || |
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1355 state == SPA_LOAD_IMPORT) |
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1356 need_update = B_TRUE; |
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1357 |
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1358 for (c = 0; c < rvd->vdev_children; c++) |
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1359 if (rvd->vdev_child[c]->vdev_ms_array == 0) |
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1360 need_update = B_TRUE; |
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1361 |
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1362 /* |
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1363 * Update the config cache asychronously in case we're the |
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1364 * root pool, in which case the config cache isn't writable yet. |
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1365 */ |
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1366 if (need_update) |
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1367 spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); |
789 | 1368 } |
1369 | |
1544 | 1370 error = 0; |
1371 out: | |
2082 | 1372 if (error && error != EBADF) |
1544 | 1373 zfs_ereport_post(FM_EREPORT_ZFS_POOL, spa, NULL, NULL, 0, 0); |
1374 spa->spa_load_state = SPA_LOAD_NONE; | |
1375 spa->spa_ena = 0; | |
1376 | |
1377 return (error); | |
789 | 1378 } |
1379 | |
1380 /* | |
1381 * Pool Open/Import | |
1382 * | |
1383 * The import case is identical to an open except that the configuration is sent | |
1384 * down from userland, instead of grabbed from the configuration cache. For the | |
1385 * case of an open, the pool configuration will exist in the | |
4451 | 1386 * POOL_STATE_UNINITIALIZED state. |
789 | 1387 * |
1388 * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
1389 * the same time open the pool, without having to keep around the spa_t in some | |
1390 * ambiguous state. | |
1391 */ | |
1392 static int | |
1393 spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config) | |
1394 { | |
1395 spa_t *spa; | |
1396 int error; | |
1397 int loaded = B_FALSE; | |
1398 int locked = B_FALSE; | |
1399 | |
1400 *spapp = NULL; | |
1401 | |
1402 /* | |
1403 * As disgusting as this is, we need to support recursive calls to this | |
1404 * function because dsl_dir_open() is called during spa_load(), and ends | |
1405 * up calling spa_open() again. The real fix is to figure out how to | |
1406 * avoid dsl_dir_open() calling this in the first place. | |
1407 */ | |
1408 if (mutex_owner(&spa_namespace_lock) != curthread) { | |
1409 mutex_enter(&spa_namespace_lock); | |
1410 locked = B_TRUE; | |
1411 } | |
1412 | |
1413 if ((spa = spa_lookup(pool)) == NULL) { | |
1414 if (locked) | |
1415 mutex_exit(&spa_namespace_lock); | |
1416 return (ENOENT); | |
1417 } | |
1418 if (spa->spa_state == POOL_STATE_UNINITIALIZED) { | |
1419 | |
1420 spa_activate(spa); | |
1421 | |
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1422 error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE); |
789 | 1423 |
1424 if (error == EBADF) { | |
1425 /* | |
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1426 * If vdev_validate() returns failure (indicated by |
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1427 * EBADF), it indicates that one of the vdevs indicates |
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1428 * that the pool has been exported or destroyed. If |
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1429 * this is the case, the config cache is out of sync and |
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1430 * we should remove the pool from the namespace. |
789 | 1431 */ |
2082 | 1432 zfs_post_ok(spa, NULL); |
789 | 1433 spa_unload(spa); |
1434 spa_deactivate(spa); | |
1435 spa_remove(spa); | |
1436 spa_config_sync(); | |
1437 if (locked) | |
1438 mutex_exit(&spa_namespace_lock); | |
1439 return (ENOENT); | |
1544 | 1440 } |
1441 | |
1442 if (error) { | |
789 | 1443 /* |
1444 * We can't open the pool, but we still have useful | |
1445 * information: the state of each vdev after the | |
1446 * attempted vdev_open(). Return this to the user. | |
1447 */ | |
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1448 if (config != NULL && spa->spa_root_vdev != NULL) { |
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1449 spa_config_enter(spa, RW_READER, FTAG); |
789 | 1450 *config = spa_config_generate(spa, NULL, -1ULL, |
1451 B_TRUE); | |
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1452 spa_config_exit(spa, FTAG); |
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1453 } |
789 | 1454 spa_unload(spa); |
1455 spa_deactivate(spa); | |
1544 | 1456 spa->spa_last_open_failed = B_TRUE; |
789 | 1457 if (locked) |
1458 mutex_exit(&spa_namespace_lock); | |
1459 *spapp = NULL; | |
1460 return (error); | |
1544 | 1461 } else { |
1462 zfs_post_ok(spa, NULL); | |
1463 spa->spa_last_open_failed = B_FALSE; | |
789 | 1464 } |
1465 | |
1466 loaded = B_TRUE; | |
1467 } | |
1468 | |
1469 spa_open_ref(spa, tag); | |
4451 | 1470 |
1471 /* | |
1472 * If we just loaded the pool, resilver anything that's out of date. | |
1473 */ | |
1474 if (loaded && (spa_mode & FWRITE)) | |
1475 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
1476 | |
789 | 1477 if (locked) |
1478 mutex_exit(&spa_namespace_lock); | |
1479 | |
1480 *spapp = spa; | |
1481 | |
1482 if (config != NULL) { | |
1544 | 1483 spa_config_enter(spa, RW_READER, FTAG); |
789 | 1484 *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
1544 | 1485 spa_config_exit(spa, FTAG); |
789 | 1486 } |
1487 | |
1488 return (0); | |
1489 } | |
1490 | |
1491 int | |
1492 spa_open(const char *name, spa_t **spapp, void *tag) | |
1493 { | |
1494 return (spa_open_common(name, spapp, tag, NULL)); | |
1495 } | |
1496 | |
1544 | 1497 /* |
1498 * Lookup the given spa_t, incrementing the inject count in the process, | |
1499 * preventing it from being exported or destroyed. | |
1500 */ | |
1501 spa_t * | |
1502 spa_inject_addref(char *name) | |
1503 { | |
1504 spa_t *spa; | |
1505 | |
1506 mutex_enter(&spa_namespace_lock); | |
1507 if ((spa = spa_lookup(name)) == NULL) { | |
1508 mutex_exit(&spa_namespace_lock); | |
1509 return (NULL); | |
1510 } | |
1511 spa->spa_inject_ref++; | |
1512 mutex_exit(&spa_namespace_lock); | |
1513 | |
1514 return (spa); | |
1515 } | |
1516 | |
1517 void | |
1518 spa_inject_delref(spa_t *spa) | |
1519 { | |
1520 mutex_enter(&spa_namespace_lock); | |
1521 spa->spa_inject_ref--; | |
1522 mutex_exit(&spa_namespace_lock); | |
1523 } | |
1524 | |
5450 | 1525 /* |
1526 * Add spares device information to the nvlist. | |
1527 */ | |
2082 | 1528 static void |
1529 spa_add_spares(spa_t *spa, nvlist_t *config) | |
1530 { | |
1531 nvlist_t **spares; | |
1532 uint_t i, nspares; | |
1533 nvlist_t *nvroot; | |
1534 uint64_t guid; | |
1535 vdev_stat_t *vs; | |
1536 uint_t vsc; | |
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1537 uint64_t pool; |
2082 | 1538 |
5450 | 1539 if (spa->spa_spares.sav_count == 0) |
2082 | 1540 return; |
1541 | |
1542 VERIFY(nvlist_lookup_nvlist(config, | |
1543 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
5450 | 1544 VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, |
2082 | 1545 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); |
1546 if (nspares != 0) { | |
1547 VERIFY(nvlist_add_nvlist_array(nvroot, | |
1548 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
1549 VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
1550 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1551 | |
1552 /* | |
1553 * Go through and find any spares which have since been | |
1554 * repurposed as an active spare. If this is the case, update | |
1555 * their status appropriately. | |
1556 */ | |
1557 for (i = 0; i < nspares; i++) { | |
1558 VERIFY(nvlist_lookup_uint64(spares[i], | |
1559 ZPOOL_CONFIG_GUID, &guid) == 0); | |
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1560 if (spa_spare_exists(guid, &pool) && pool != 0ULL) { |
2082 | 1561 VERIFY(nvlist_lookup_uint64_array( |
1562 spares[i], ZPOOL_CONFIG_STATS, | |
1563 (uint64_t **)&vs, &vsc) == 0); | |
1564 vs->vs_state = VDEV_STATE_CANT_OPEN; | |
1565 vs->vs_aux = VDEV_AUX_SPARED; | |
1566 } | |
1567 } | |
1568 } | |
1569 } | |
1570 | |
5450 | 1571 /* |
1572 * Add l2cache device information to the nvlist, including vdev stats. | |
1573 */ | |
1574 static void | |
1575 spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
1576 { | |
1577 nvlist_t **l2cache; | |
1578 uint_t i, j, nl2cache; | |
1579 nvlist_t *nvroot; | |
1580 uint64_t guid; | |
1581 vdev_t *vd; | |
1582 vdev_stat_t *vs; | |
1583 uint_t vsc; | |
1584 | |
1585 if (spa->spa_l2cache.sav_count == 0) | |
1586 return; | |
1587 | |
1588 spa_config_enter(spa, RW_READER, FTAG); | |
1589 | |
1590 VERIFY(nvlist_lookup_nvlist(config, | |
1591 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
1592 VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
1593 ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1594 if (nl2cache != 0) { | |
1595 VERIFY(nvlist_add_nvlist_array(nvroot, | |
1596 ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
1597 VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
1598 ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1599 | |
1600 /* | |
1601 * Update level 2 cache device stats. | |
1602 */ | |
1603 | |
1604 for (i = 0; i < nl2cache; i++) { | |
1605 VERIFY(nvlist_lookup_uint64(l2cache[i], | |
1606 ZPOOL_CONFIG_GUID, &guid) == 0); | |
1607 | |
1608 vd = NULL; | |
1609 for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
1610 if (guid == | |
1611 spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
1612 vd = spa->spa_l2cache.sav_vdevs[j]; | |
1613 break; | |
1614 } | |
1615 } | |
1616 ASSERT(vd != NULL); | |
1617 | |
1618 VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
1619 ZPOOL_CONFIG_STATS, (uint64_t **)&vs, &vsc) == 0); | |
1620 vdev_get_stats(vd, vs); | |
1621 } | |
1622 } | |
1623 | |
1624 spa_config_exit(spa, FTAG); | |
1625 } | |
1626 | |
789 | 1627 int |
1544 | 1628 spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) |
789 | 1629 { |
1630 int error; | |
1631 spa_t *spa; | |
1632 | |
1633 *config = NULL; | |
1634 error = spa_open_common(name, &spa, FTAG, config); | |
1635 | |
2082 | 1636 if (spa && *config != NULL) { |
1544 | 1637 VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT, |
1638 spa_get_errlog_size(spa)) == 0); | |
1639 | |
2082 | 1640 spa_add_spares(spa, *config); |
5450 | 1641 spa_add_l2cache(spa, *config); |
2082 | 1642 } |
1643 | |
1544 | 1644 /* |
1645 * We want to get the alternate root even for faulted pools, so we cheat | |
1646 * and call spa_lookup() directly. | |
1647 */ | |
1648 if (altroot) { | |
1649 if (spa == NULL) { | |
1650 mutex_enter(&spa_namespace_lock); | |
1651 spa = spa_lookup(name); | |
1652 if (spa) | |
1653 spa_altroot(spa, altroot, buflen); | |
1654 else | |
1655 altroot[0] = '\0'; | |
1656 spa = NULL; | |
1657 mutex_exit(&spa_namespace_lock); | |
1658 } else { | |
1659 spa_altroot(spa, altroot, buflen); | |
1660 } | |
1661 } | |
1662 | |
789 | 1663 if (spa != NULL) |
1664 spa_close(spa, FTAG); | |
1665 | |
1666 return (error); | |
1667 } | |
1668 | |
1669 /* | |
5450 | 1670 * Validate that the auxiliary device array is well formed. We must have an |
1671 * array of nvlists, each which describes a valid leaf vdev. If this is an | |
1672 * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
1673 * specified, as long as they are well-formed. | |
2082 | 1674 */ |
1675 static int | |
5450 | 1676 spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, |
1677 spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
1678 vdev_labeltype_t label) | |
2082 | 1679 { |
5450 | 1680 nvlist_t **dev; |
1681 uint_t i, ndev; | |
2082 | 1682 vdev_t *vd; |
1683 int error; | |
1684 | |
1685 /* | |
5450 | 1686 * It's acceptable to have no devs specified. |
2082 | 1687 */ |
5450 | 1688 if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) |
2082 | 1689 return (0); |
1690 | |
5450 | 1691 if (ndev == 0) |
2082 | 1692 return (EINVAL); |
1693 | |
1694 /* | |
5450 | 1695 * Make sure the pool is formatted with a version that supports this |
1696 * device type. | |
2082 | 1697 */ |
5450 | 1698 if (spa_version(spa) < version) |
2082 | 1699 return (ENOTSUP); |
1700 | |
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1701 /* |
5450 | 1702 * Set the pending device list so we correctly handle device in-use |
3377
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1703 * checking. |
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1704 */ |
5450 | 1705 sav->sav_pending = dev; |
1706 sav->sav_npending = ndev; | |
1707 | |
1708 for (i = 0; i < ndev; i++) { | |
1709 if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
2082 | 1710 mode)) != 0) |
3377
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1711 goto out; |
2082 | 1712 |
1713 if (!vd->vdev_ops->vdev_op_leaf) { | |
1714 vdev_free(vd); | |
3377
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1715 error = EINVAL; |
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1716 goto out; |
2082 | 1717 } |
1718 | |
5450 | 1719 /* |
1720 * The L2ARC currently only supports disk devices. | |
1721 */ | |
1722 if ((strcmp(config, ZPOOL_CONFIG_L2CACHE) == 0) && | |
1723 strcmp(vd->vdev_ops->vdev_op_type, VDEV_TYPE_DISK) != 0) { | |
1724 error = ENOTBLK; | |
1725 goto out; | |
1726 } | |
1727 | |
2082 | 1728 vd->vdev_top = vd; |
3377
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1729 |
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1730 if ((error = vdev_open(vd)) == 0 && |
5450 | 1731 (error = vdev_label_init(vd, crtxg, label)) == 0) { |
1732 VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
3377
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1733 vd->vdev_guid) == 0); |
2082 | 1734 } |
1735 | |
1736 vdev_free(vd); | |
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1737 |
5450 | 1738 if (error && |
1739 (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
3377
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1740 goto out; |
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|
1741 else |
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1742 error = 0; |
2082 | 1743 } |
1744 | |
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1745 out: |
5450 | 1746 sav->sav_pending = NULL; |
1747 sav->sav_npending = 0; | |
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1748 return (error); |
2082 | 1749 } |
1750 | |
5450 | 1751 static int |
1752 spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
1753 { | |
1754 int error; | |
1755 | |
1756 if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
1757 &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
1758 VDEV_LABEL_SPARE)) != 0) { | |
1759 return (error); | |
1760 } | |
1761 | |
1762 return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
1763 &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
1764 VDEV_LABEL_L2CACHE)); | |
1765 } | |
1766 | |
1767 static void | |
1768 spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
1769 const char *config) | |
1770 { | |
1771 int i; | |
1772 | |
1773 if (sav->sav_config != NULL) { | |
1774 nvlist_t **olddevs; | |
1775 uint_t oldndevs; | |
1776 nvlist_t **newdevs; | |
1777 | |
1778 /* | |
1779 * Generate new dev list by concatentating with the | |
1780 * current dev list. | |
1781 */ | |
1782 VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
1783 &olddevs, &oldndevs) == 0); | |
1784 | |
1785 newdevs = kmem_alloc(sizeof (void *) * | |
1786 (ndevs + oldndevs), KM_SLEEP); | |
1787 for (i = 0; i < oldndevs; i++) | |
1788 VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
1789 KM_SLEEP) == 0); | |
1790 for (i = 0; i < ndevs; i++) | |
1791 VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
1792 KM_SLEEP) == 0); | |
1793 | |
1794 VERIFY(nvlist_remove(sav->sav_config, config, | |
1795 DATA_TYPE_NVLIST_ARRAY) == 0); | |
1796 | |
1797 VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
1798 config, newdevs, ndevs + oldndevs) == 0); | |
1799 for (i = 0; i < oldndevs + ndevs; i++) | |
1800 nvlist_free(newdevs[i]); | |
1801 kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
1802 } else { | |
1803 /* | |
1804 * Generate a new dev list. | |
1805 */ | |
1806 VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
1807 KM_SLEEP) == 0); | |
1808 VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, | |
1809 devs, ndevs) == 0); | |
1810 } | |
1811 } | |
1812 | |
1813 /* | |
1814 * Stop and drop level 2 ARC devices | |
1815 */ | |
1816 void | |
1817 spa_l2cache_drop(spa_t *spa) | |
1818 { | |
1819 vdev_t *vd; | |
1820 int i; | |
1821 spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
1822 | |
1823 for (i = 0; i < sav->sav_count; i++) { | |
1824 uint64_t pool; | |
1825 | |
1826 vd = sav->sav_vdevs[i]; | |
1827 ASSERT(vd != NULL); | |
1828 | |
1829 if (spa_mode & FWRITE && | |
1830 spa_l2cache_exists(vd->vdev_guid, &pool) && pool != 0ULL) { | |
1831 l2arc_remove_vdev(vd); | |
1832 } | |
1833 if (vd->vdev_isl2cache) | |
1834 spa_l2cache_remove(vd); | |
1835 vdev_clear_stats(vd); | |
1836 (void) vdev_close(vd); | |
1837 } | |
1838 } | |
1839 | |
2082 | 1840 /* |
789 | 1841 * Pool Creation |
1842 */ | |
1843 int | |
5094 | 1844 spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, |
4715
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1845 const char *history_str) |
789 | 1846 { |
1847 spa_t *spa; | |
5094 | 1848 char *altroot = NULL; |
1635
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1849 vdev_t *rvd; |
789 | 1850 dsl_pool_t *dp; |
1851 dmu_tx_t *tx; | |
2082 | 1852 int c, error = 0; |
789 | 1853 uint64_t txg = TXG_INITIAL; |
5450 | 1854 nvlist_t **spares, **l2cache; |
1855 uint_t nspares, nl2cache; | |
5094 | 1856 uint64_t version; |
789 | 1857 |
1858 /* | |
1859 * If this pool already exists, return failure. | |
1860 */ | |
1861 mutex_enter(&spa_namespace_lock); | |
1862 if (spa_lookup(pool) != NULL) { | |
1863 mutex_exit(&spa_namespace_lock); | |
1864 return (EEXIST); | |
1865 } | |
1866 | |
1867 /* | |
1868 * Allocate a new spa_t structure. | |
1869 */ | |
5094 | 1870 (void) nvlist_lookup_string(props, |
1871 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
1635
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1872 spa = spa_add(pool, altroot); |
789 | 1873 spa_activate(spa); |
1874 | |
1875 spa->spa_uberblock.ub_txg = txg - 1; | |
5094 | 1876 |
1877 if (props && (error = spa_prop_validate(spa, props))) { | |
1878 spa_unload(spa); | |
1879 spa_deactivate(spa); | |
1880 spa_remove(spa); | |
1881 return (error); | |
1882 } | |
1883 | |
1884 if (nvlist_lookup_uint64(props, zpool_prop_to_name(ZPOOL_PROP_VERSION), | |
1885 &version) != 0) | |
1886 version = SPA_VERSION; | |
1887 ASSERT(version <= SPA_VERSION); | |
1888 spa->spa_uberblock.ub_version = version; | |
789 | 1889 spa->spa_ubsync = spa->spa_uberblock; |
1890 | |
1635
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1891 /* |
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1892 * Create the root vdev. |
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1893 */ |
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1894 spa_config_enter(spa, RW_WRITER, FTAG); |
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1895 |
2082 | 1896 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); |
1897 | |
1898 ASSERT(error != 0 || rvd != NULL); | |
1899 ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
1900 | |
5913
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1901 if (error == 0 && !zfs_allocatable_devs(nvroot)) |
1635
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1902 error = EINVAL; |
2082 | 1903 |
1904 if (error == 0 && | |
1905 (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
5450 | 1906 (error = spa_validate_aux(spa, nvroot, txg, |
2082 | 1907 VDEV_ALLOC_ADD)) == 0) { |
1908 for (c = 0; c < rvd->vdev_children; c++) | |
1909 vdev_init(rvd->vdev_child[c], txg); | |
1910 vdev_config_dirty(rvd); | |
1635
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1911 } |
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1912 |
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1913 spa_config_exit(spa, FTAG); |
789 | 1914 |
2082 | 1915 if (error != 0) { |
789 | 1916 spa_unload(spa); |
1917 spa_deactivate(spa); | |
1918 spa_remove(spa); | |
1919 mutex_exit(&spa_namespace_lock); | |
1920 return (error); | |
1921 } | |
1922 | |
2082 | 1923 /* |
1924 * Get the list of spares, if specified. | |
1925 */ | |
1926 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
1927 &spares, &nspares) == 0) { | |
5450 | 1928 VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, |
2082 | 1929 KM_SLEEP) == 0); |
5450 | 1930 VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
2082 | 1931 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); |
1932 spa_config_enter(spa, RW_WRITER, FTAG); | |
1933 spa_load_spares(spa); | |
1934 spa_config_exit(spa, FTAG); | |
5450 | 1935 spa->spa_spares.sav_sync = B_TRUE; |
1936 } | |
1937 | |
1938 /* | |
1939 * Get the list of level 2 cache devices, if specified. | |
1940 */ | |
1941 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
1942 &l2cache, &nl2cache) == 0) { | |
1943 VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
1944 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
1945 VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, | |
1946 ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
1947 spa_config_enter(spa, RW_WRITER, FTAG); | |
1948 spa_load_l2cache(spa); | |
1949 spa_config_exit(spa, FTAG); | |
1950 spa->spa_l2cache.sav_sync = B_TRUE; | |
2082 | 1951 } |
1952 | |
789 | 1953 spa->spa_dsl_pool = dp = dsl_pool_create(spa, txg); |
1954 spa->spa_meta_objset = dp->dp_meta_objset; | |
1955 | |
1956 tx = dmu_tx_create_assigned(dp, txg); | |
1957 | |
1958 /* | |
1959 * Create the pool config object. | |
1960 */ | |
1961 spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
1962 DMU_OT_PACKED_NVLIST, 1 << 14, | |
1963 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
1964 | |
1544 | 1965 if (zap_add(spa->spa_meta_objset, |
789 | 1966 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
1544 | 1967 sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { |
1968 cmn_err(CE_PANIC, "failed to add pool config"); | |
1969 } | |
789 | 1970 |
5094 | 1971 /* Newly created pools with the right version are always deflated. */ |
1972 if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
1973 spa->spa_deflate = TRUE; | |
1974 if (zap_add(spa->spa_meta_objset, | |
1975 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
1976 sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
1977 cmn_err(CE_PANIC, "failed to add deflate"); | |
1978 } | |
2082 | 1979 } |
1980 | |
789 | 1981 /* |
1982 * Create the deferred-free bplist object. Turn off compression | |
1983 * because sync-to-convergence takes longer if the blocksize | |
1984 * keeps changing. | |
1985 */ | |
1986 spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset, | |
1987 1 << 14, tx); | |
1988 dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj, | |
1989 ZIO_COMPRESS_OFF, tx); | |
1990 | |
1544 | 1991 if (zap_add(spa->spa_meta_objset, |
789 | 1992 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, |
1544 | 1993 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) { |
1994 cmn_err(CE_PANIC, "failed to add bplist"); | |
1995 } | |
789 | 1996 |
2926 | 1997 /* |
1998 * Create the pool's history object. | |
1999 */ | |
5094 | 2000 if (version >= SPA_VERSION_ZPOOL_HISTORY) |
2001 spa_history_create_obj(spa, tx); | |
2002 | |
2003 /* | |
2004 * Set pool properties. | |
2005 */ | |
2006 spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
2007 spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
5329 | 2008 spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); |
5094 | 2009 if (props) |
2010 spa_sync_props(spa, props, CRED(), tx); | |
2926 | 2011 |
789 | 2012 dmu_tx_commit(tx); |
2013 | |
2014 spa->spa_sync_on = B_TRUE; | |
2015 txg_sync_start(spa->spa_dsl_pool); | |
2016 | |
2017 /* | |
2018 * We explicitly wait for the first transaction to complete so that our | |
2019 * bean counters are appropriately updated. | |
2020 */ | |
2021 txg_wait_synced(spa->spa_dsl_pool, txg); | |
2022 | |
2023 spa_config_sync(); | |
2024 | |
5094 | 2025 if (version >= SPA_VERSION_ZPOOL_HISTORY && history_str != NULL) |
4715
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2026 (void) spa_history_log(spa, history_str, LOG_CMD_POOL_CREATE); |
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2027 |
789 | 2028 mutex_exit(&spa_namespace_lock); |
2029 | |
2030 return (0); | |
2031 } | |
2032 | |
2033 /* | |
2034 * Import the given pool into the system. We set up the necessary spa_t and | |
2035 * then call spa_load() to do the dirty work. | |
2036 */ | |
6423 | 2037 static int |
2038 spa_import_common(const char *pool, nvlist_t *config, nvlist_t *props, | |
2039 boolean_t isroot) | |
789 | 2040 { |
2041 spa_t *spa; | |
5094 | 2042 char *altroot = NULL; |
789 | 2043 int error; |
2082 | 2044 nvlist_t *nvroot; |
5450 | 2045 nvlist_t **spares, **l2cache; |
2046 uint_t nspares, nl2cache; | |
6423 | 2047 int mosconfig = isroot? B_FALSE : B_TRUE; |
789 | 2048 |
2049 /* | |
2050 * If a pool with this name exists, return failure. | |
2051 */ | |
2052 mutex_enter(&spa_namespace_lock); | |
2053 if (spa_lookup(pool) != NULL) { | |
2054 mutex_exit(&spa_namespace_lock); | |
2055 return (EEXIST); | |
2056 } | |
2057 | |
2058 /* | |
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2059 * Create and initialize the spa structure. |
789 | 2060 */ |
5094 | 2061 (void) nvlist_lookup_string(props, |
2062 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
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2063 spa = spa_add(pool, altroot); |
789 | 2064 spa_activate(spa); |
2065 | |
2066 /* | |
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2067 * Pass off the heavy lifting to spa_load(). |
1732 | 2068 * Pass TRUE for mosconfig because the user-supplied config |
2069 * is actually the one to trust when doing an import. | |
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2070 */ |
6423 | 2071 error = spa_load(spa, config, SPA_LOAD_IMPORT, mosconfig); |
789 | 2072 |
2082 | 2073 spa_config_enter(spa, RW_WRITER, FTAG); |
2074 /* | |
2075 * Toss any existing sparelist, as it doesn't have any validity anymore, | |
2076 * and conflicts with spa_has_spare(). | |
2077 */ | |
6423 | 2078 if (!isroot && spa->spa_spares.sav_config) { |
5450 | 2079 nvlist_free(spa->spa_spares.sav_config); |
2080 spa->spa_spares.sav_config = NULL; | |
2082 | 2081 spa_load_spares(spa); |
2082 } | |
6423 | 2083 if (!isroot && spa->spa_l2cache.sav_config) { |
5450 | 2084 nvlist_free(spa->spa_l2cache.sav_config); |
2085 spa->spa_l2cache.sav_config = NULL; | |
2086 spa_load_l2cache(spa); | |
2087 } | |
2082 | 2088 |
2089 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
2090 &nvroot) == 0); | |
5450 | 2091 if (error == 0) |
2092 error = spa_validate_aux(spa, nvroot, -1ULL, VDEV_ALLOC_SPARE); | |
2093 if (error == 0) | |
2094 error = spa_validate_aux(spa, nvroot, -1ULL, | |
2095 VDEV_ALLOC_L2CACHE); | |
2082 | 2096 spa_config_exit(spa, FTAG); |
2097 | |
5094 | 2098 if (error != 0 || (props && (error = spa_prop_set(spa, props)))) { |
789 | 2099 spa_unload(spa); |
2100 spa_deactivate(spa); | |
2101 spa_remove(spa); | |
2102 mutex_exit(&spa_namespace_lock); | |
2103 return (error); | |
2104 } | |
2105 | |
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2106 /* |
5450 | 2107 * Override any spares and level 2 cache devices as specified by |
2108 * the user, as these may have correct device names/devids, etc. | |
2082 | 2109 */ |
2110 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
2111 &spares, &nspares) == 0) { | |
5450 | 2112 if (spa->spa_spares.sav_config) |
2113 VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
2082 | 2114 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); |
2115 else | |
5450 | 2116 VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, |
2082 | 2117 NV_UNIQUE_NAME, KM_SLEEP) == 0); |
5450 | 2118 VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
2082 | 2119 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); |
2120 spa_config_enter(spa, RW_WRITER, FTAG); | |
2121 spa_load_spares(spa); | |
2122 spa_config_exit(spa, FTAG); | |
5450 | 2123 spa->spa_spares.sav_sync = B_TRUE; |
2124 } | |
2125 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
2126 &l2cache, &nl2cache) == 0) { | |
2127 if (spa->spa_l2cache.sav_config) | |
2128 VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
2129 ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
2130 else | |
2131 VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
2132 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2133 VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, | |
2134 ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
2135 spa_config_enter(spa, RW_WRITER, FTAG); | |
2136 spa_load_l2cache(spa); | |
2137 spa_config_exit(spa, FTAG); | |
2138 spa->spa_l2cache.sav_sync = B_TRUE; | |
2082 | 2139 } |
2140 | |
2141 /* | |
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2142 * Update the config cache to include the newly-imported pool. |
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2143 */ |
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2144 if (spa_mode & FWRITE) |
6423 | 2145 spa_config_update_common(spa, SPA_CONFIG_UPDATE_POOL, isroot); |
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2146 |
789 | 2147 /* |
2148 * Resilver anything that's out of date. | |
2149 */ | |
6423 | 2150 if (!isroot && (spa_mode & FWRITE)) |
789 | 2151 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
2152 | |
4451 | 2153 mutex_exit(&spa_namespace_lock); |
2154 | |
789 | 2155 return (0); |
2156 } | |
2157 | |
6423 | 2158 #ifdef _KERNEL |
2159 /* | |
2160 * Build a "root" vdev for a top level vdev read in from a rootpool | |
2161 * device label. | |
2162 */ | |
2163 static void | |
2164 spa_build_rootpool_config(nvlist_t *config) | |
2165 { | |
2166 nvlist_t *nvtop, *nvroot; | |
2167 uint64_t pgid; | |
2168 | |
2169 /* | |
2170 * Add this top-level vdev to the child array. | |
2171 */ | |
2172 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvtop) | |
2173 == 0); | |
2174 VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pgid) | |
2175 == 0); | |
2176 | |
2177 /* | |
2178 * Put this pool's top-level vdevs into a root vdev. | |
2179 */ | |
2180 VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2181 VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) | |
2182 == 0); | |
2183 VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); | |
2184 VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); | |
2185 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, | |
2186 &nvtop, 1) == 0); | |
2187 | |
2188 /* | |
2189 * Replace the existing vdev_tree with the new root vdev in | |
2190 * this pool's configuration (remove the old, add the new). | |
2191 */ | |
2192 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); | |
2193 nvlist_free(nvroot); | |
2194 } | |
2195 | |
2196 /* | |
2197 * Get the root pool information from the root disk, then import the root pool | |
2198 * during the system boot up time. | |
2199 */ | |
2200 extern nvlist_t *vdev_disk_read_rootlabel(char *); | |
2201 | |
2202 void | |
2203 spa_check_rootconf(char *devpath, char **bestdev, nvlist_t **bestconf, | |
2204 uint64_t *besttxg) | |
2205 { | |
2206 nvlist_t *config; | |
2207 uint64_t txg; | |
2208 | |
2209 if ((config = vdev_disk_read_rootlabel(devpath)) == NULL) | |
2210 return; | |
2211 | |
2212 VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0); | |
2213 | |
2214 if (txg > *besttxg) { | |
2215 *besttxg = txg; | |
2216 if (*bestconf != NULL) | |
2217 nvlist_free(*bestconf); | |
2218 *bestconf = config; | |
2219 *bestdev = devpath; | |
2220 } | |
2221 } | |
2222 | |
2223 boolean_t | |
2224 spa_rootdev_validate(nvlist_t *nv) | |
2225 { | |
2226 uint64_t ival; | |
2227 | |
2228 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || | |
2229 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || | |
2230 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED, &ival) == 0 || | |
2231 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) | |
2232 return (B_FALSE); | |
2233 | |
2234 return (B_TRUE); | |
2235 } | |
2236 | |
2237 /* | |
2238 * Import a root pool. | |
2239 * | |
2240 * For x86. devpath_list will consist the physpath name of the vdev in a single | |
2241 * disk root pool or a list of physnames for the vdevs in a mirrored rootpool. | |
2242 * e.g. | |
2243 * "/pci@1f,0/ide@d/disk@0,0:a /pci@1f,o/ide@d/disk@2,0:a" | |
2244 * | |
2245 * For Sparc, devpath_list consists the physpath name of the booting device | |
2246 * no matter the rootpool is a single device pool or a mirrored pool. | |
2247 * e.g. | |
2248 * "/pci@1f,0/ide@d/disk@0,0:a" | |
2249 */ | |
2250 int | |
2251 spa_import_rootpool(char *devpath_list) | |
2252 { | |
2253 nvlist_t *conf = NULL; | |
2254 char *dev = NULL; | |
2255 char *pname; | |
2256 int error; | |
2257 | |
2258 /* | |
2259 * Get the vdev pathname and configuation from the most | |
2260 * recently updated vdev (highest txg). | |
2261 */ | |
2262 if (error = spa_get_rootconf(devpath_list, &dev, &conf)) | |
2263 goto msg_out; | |
2264 | |
2265 /* | |
2266 * Add type "root" vdev to the config. | |
2267 */ | |
2268 spa_build_rootpool_config(conf); | |
2269 | |
2270 VERIFY(nvlist_lookup_string(conf, ZPOOL_CONFIG_POOL_NAME, &pname) == 0); | |
2271 | |
2272 error = spa_import_common(pname, conf, NULL, TRUE); | |
2273 if (error == EEXIST) | |
2274 error = 0; | |
2275 | |
2276 nvlist_free(conf); | |
2277 return (error); | |
2278 | |
2279 msg_out: | |
2280 cmn_err(CE_NOTE, "\n\n" | |
2281 " *************************************************** \n" | |
2282 " * This device is not bootable! * \n" | |
2283 " * It is either offlined or detached or faulted. * \n" | |
2284 " * Please try to boot from a different device. * \n" | |
2285 " *************************************************** \n\n"); | |
2286 | |
2287 return (error); | |
2288 } | |
2289 #endif | |
2290 | |
2291 /* | |
2292 * Import a non-root pool into the system. | |
2293 */ | |
2294 int | |
2295 spa_import(const char *pool, nvlist_t *config, nvlist_t *props) | |
2296 { | |
2297 return (spa_import_common(pool, config, props, FALSE)); | |
2298 } | |
2299 | |
789 | 2300 /* |
2301 * This (illegal) pool name is used when temporarily importing a spa_t in order | |
2302 * to get the vdev stats associated with the imported devices. | |
2303 */ | |
2304 #define TRYIMPORT_NAME "$import" | |
2305 | |
2306 nvlist_t * | |
2307 spa_tryimport(nvlist_t *tryconfig) | |
2308 { | |
2309 nvlist_t *config = NULL; | |
2310 char *poolname; | |
2311 spa_t *spa; | |
2312 uint64_t state; | |
2313 | |
2314 if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
2315 return (NULL); | |
2316 | |
2317 if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
2318 return (NULL); | |
2319 | |
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2320 /* |
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2321 * Create and initialize the spa structure. |
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2322 */ |
789 | 2323 mutex_enter(&spa_namespace_lock); |
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2324 spa = spa_add(TRYIMPORT_NAME, NULL); |
789 | 2325 spa_activate(spa); |
2326 | |
2327 /* | |
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2328 * Pass off the heavy lifting to spa_load(). |
1732 | 2329 * Pass TRUE for mosconfig because the user-supplied config |
2330 * is actually the one to trust when doing an import. | |
789 | 2331 */ |
1732 | 2332 (void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE); |
789 | 2333 |
2334 /* | |
2335 * If 'tryconfig' was at least parsable, return the current config. | |
2336 */ | |
2337 if (spa->spa_root_vdev != NULL) { | |
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2338 spa_config_enter(spa, RW_READER, FTAG); |
789 | 2339 config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
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2340 spa_config_exit(spa, FTAG); |
789 | 2341 VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
2342 poolname) == 0); | |
2343 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
2344 state) == 0); | |
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2345 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, |
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2346 spa->spa_uberblock.ub_timestamp) == 0); |
2082 | 2347 |
2348 /* | |
6423 | 2349 * If the bootfs property exists on this pool then we |
2350 * copy it out so that external consumers can tell which | |
2351 * pools are bootable. | |
2352 */ | |
2353 if (spa->spa_bootfs) { | |
2354 char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
2355 | |
2356 /* | |
2357 * We have to play games with the name since the | |
2358 * pool was opened as TRYIMPORT_NAME. | |
2359 */ | |
2360 if (dsl_dsobj_to_dsname(spa->spa_name, | |
2361 spa->spa_bootfs, tmpname) == 0) { | |
2362 char *cp; | |
2363 char *dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
2364 | |
2365 cp = strchr(tmpname, '/'); | |
2366 if (cp == NULL) { | |
2367 (void) strlcpy(dsname, tmpname, | |
2368 MAXPATHLEN); | |
2369 } else { | |
2370 (void) snprintf(dsname, MAXPATHLEN, | |
2371 "%s/%s", poolname, ++cp); | |
2372 } | |
2373 VERIFY(nvlist_add_string(config, | |
2374 ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
2375 kmem_free(dsname, MAXPATHLEN); | |
2376 } | |
2377 kmem_free(tmpname, MAXPATHLEN); | |
2378 } | |
2379 | |
2380 /* | |
5450 | 2381 * Add the list of hot spares and level 2 cache devices. |
2082 | 2382 */ |
2383 spa_add_spares(spa, config); | |
5450 | 2384 spa_add_l2cache(spa, config); |
789 | 2385 } |
2386 | |
2387 spa_unload(spa); | |
2388 spa_deactivate(spa); | |
2389 spa_remove(spa); | |
2390 mutex_exit(&spa_namespace_lock); | |
2391 | |
2392 return (config); | |
2393 } | |
2394 | |
2395 /* | |
2396 * Pool export/destroy | |
2397 * | |
2398 * The act of destroying or exporting a pool is very simple. We make sure there | |
2399 * is no more pending I/O and any references to the pool are gone. Then, we | |
2400 * update the pool state and sync all the labels to disk, removing the | |
2401 * configuration from the cache afterwards. | |
2402 */ | |
2403 static int | |
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2404 spa_export_common(char *pool, int new_state, nvlist_t **oldconfig) |
789 | 2405 { |
2406 spa_t *spa; | |
2407 | |
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2408 if (oldconfig) |
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2409 *oldconfig = NULL; |
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2410 |
789 | 2411 if (!(spa_mode & FWRITE)) |
2412 return (EROFS); | |
2413 | |
2414 mutex_enter(&spa_namespace_lock); | |
2415 if ((spa = spa_lookup(pool)) == NULL) { | |
2416 mutex_exit(&spa_namespace_lock); | |
2417 return (ENOENT); | |
2418 } | |
2419 | |
2420 /* | |
1544 | 2421 * Put a hold on the pool, drop the namespace lock, stop async tasks, |
2422 * reacquire the namespace lock, and see if we can export. | |
2423 */ | |
2424 spa_open_ref(spa, FTAG); | |
2425 mutex_exit(&spa_namespace_lock); | |
2426 spa_async_suspend(spa); | |
2427 mutex_enter(&spa_namespace_lock); | |
2428 spa_close(spa, FTAG); | |
2429 | |
2430 /* | |
789 | 2431 * The pool will be in core if it's openable, |
2432 * in which case we can modify its state. | |
2433 */ | |
2434 if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
2435 /* | |
2436 * Objsets may be open only because they're dirty, so we | |
2437 * have to force it to sync before checking spa_refcnt. | |
2438 */ | |
2439 spa_scrub_suspend(spa); | |
2440 txg_wait_synced(spa->spa_dsl_pool, 0); | |
2441 | |
1544 | 2442 /* |
2443 * A pool cannot be exported or destroyed if there are active | |
2444 * references. If we are resetting a pool, allow references by | |
2445 * fault injection handlers. | |
2446 */ | |
2447 if (!spa_refcount_zero(spa) || | |
2448 (spa->spa_inject_ref != 0 && | |
2449 new_state != POOL_STATE_UNINITIALIZED)) { | |
789 | 2450 spa_scrub_resume(spa); |
1544 | 2451 spa_async_resume(spa); |
789 | 2452 mutex_exit(&spa_namespace_lock); |
2453 return (EBUSY); | |
2454 } | |
2455 | |
2456 spa_scrub_resume(spa); | |
2457 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); | |
2458 | |
2459 /* | |
2460 * We want this to be reflected on every label, | |
2461 * so mark them all dirty. spa_unload() will do the | |
2462 * final sync that pushes these changes out. | |
2463 */ | |
1544 | 2464 if (new_state != POOL_STATE_UNINITIALIZED) { |
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2465 spa_config_enter(spa, RW_WRITER, FTAG); |
1544 | 2466 spa->spa_state = new_state; |
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2467 spa->spa_final_txg = spa_last_synced_txg(spa) + 1; |
1544 | 2468 vdev_config_dirty(spa->spa_root_vdev); |
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2469 spa_config_exit(spa, FTAG); |
1544 | 2470 } |
789 | 2471 } |
2472 | |
4451 | 2473 spa_event_notify(spa, NULL, ESC_ZFS_POOL_DESTROY); |
2474 | |
789 | 2475 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { |
2476 spa_unload(spa); | |
2477 spa_deactivate(spa); | |
2478 } | |
2479 | |
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2480 if (oldconfig && spa->spa_config) |
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2481 VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); |
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2482 |
1544 | 2483 if (new_state != POOL_STATE_UNINITIALIZED) { |
5363 | 2484 spa_config_check(spa->spa_config_dir, |
2485 spa->spa_config_file); | |
1544 | 2486 spa_remove(spa); |
2487 spa_config_sync(); | |
2488 } | |
789 | 2489 mutex_exit(&spa_namespace_lock); |
2490 | |
2491 return (0); | |
2492 } | |
2493 | |
2494 /* | |
2495 * Destroy a storage pool. | |
2496 */ | |
2497 int | |
2498 spa_destroy(char *pool) | |
2499 { | |
1775
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2500 return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL)); |
789 | 2501 } |
2502 | |
2503 /* | |
2504 * Export a storage pool. | |
2505 */ | |
2506 int | |
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2507 spa_export(char *pool, nvlist_t **oldconfig) |
789 | 2508 { |
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2509 return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig)); |
789 | 2510 } |
2511 | |
2512 /* | |
1544 | 2513 * Similar to spa_export(), this unloads the spa_t without actually removing it |
2514 * from the namespace in any way. | |
2515 */ | |
2516 int | |
2517 spa_reset(char *pool) | |
2518 { | |
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2519 return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL)); |
1544 | 2520 } |
2521 | |
2522 | |
2523 /* | |
789 | 2524 * ========================================================================== |
2525 * Device manipulation | |
2526 * ========================================================================== | |
2527 */ | |
2528 | |
2529 /* | |
4527 | 2530 * Add a device to a storage pool. |
789 | 2531 */ |
2532 int | |
2533 spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
2534 { | |
2535 uint64_t txg; | |
1635
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2536 int c, error; |
789 | 2537 vdev_t *rvd = spa->spa_root_vdev; |
1585
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2538 vdev_t *vd, *tvd; |
5450 | 2539 nvlist_t **spares, **l2cache; |
2540 uint_t nspares, nl2cache; | |
789 | 2541 |
2542 txg = spa_vdev_enter(spa); | |
2543 | |
2082 | 2544 if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, |
2545 VDEV_ALLOC_ADD)) != 0) | |
2546 return (spa_vdev_exit(spa, NULL, txg, error)); | |
2547 | |
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2548 spa->spa_pending_vdev = vd; |
789 | 2549 |
5450 | 2550 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, |
2551 &nspares) != 0) | |
2082 | 2552 nspares = 0; |
2553 | |
5450 | 2554 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, |
2555 &nl2cache) != 0) | |
2556 nl2cache = 0; | |
2557 | |
2558 if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) { | |
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2559 spa->spa_pending_vdev = NULL; |
2082 | 2560 return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
3377
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2561 } |
2082 | 2562 |
2563 if (vd->vdev_children != 0) { | |
3377
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2564 if ((error = vdev_create(vd, txg, B_FALSE)) != 0) { |
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2565 spa->spa_pending_vdev = NULL; |
2082 | 2566 return (spa_vdev_exit(spa, vd, txg, error)); |
2567 } | |
2568 } | |
2569 | |
3377
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2570 /* |
5450 | 2571 * We must validate the spares and l2cache devices after checking the |
2572 * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
3377
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2573 */ |
5450 | 2574 if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) { |
3377
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2575 spa->spa_pending_vdev = NULL; |
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2576 return (spa_vdev_exit(spa, vd, txg, error)); |
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2577 } |
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2578 |
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2579 spa->spa_pending_vdev = NULL; |
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2580 |
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2581 /* |
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2582 * Transfer each new top-level vdev from vd to rvd. |
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2583 */ |
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2584 for (c = 0; c < vd->vdev_children; c++) { |
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2585 tvd = vd->vdev_child[c]; |
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2586 vdev_remove_child(vd, tvd); |
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2587 tvd->vdev_id = rvd->vdev_children; |
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2588 vdev_add_child(rvd, tvd); |
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2589 vdev_config_dirty(tvd); |
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2590 } |
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2591 |
2082 | 2592 if (nspares != 0) { |
5450 | 2593 spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, |
2594 ZPOOL_CONFIG_SPARES); | |
2082 | 2595 spa_load_spares(spa); |
5450 | 2596 spa->spa_spares.sav_sync = B_TRUE; |
2597 } | |
2598 | |
2599 if (nl2cache != 0) { | |
2600 spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
2601 ZPOOL_CONFIG_L2CACHE); | |
2602 spa_load_l2cache(spa); | |
2603 spa->spa_l2cache.sav_sync = B_TRUE; | |
789 | 2604 } |
2605 | |
2606 /* | |
1585
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2607 * We have to be careful when adding new vdevs to an existing pool. |
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2608 * If other threads start allocating from these vdevs before we |
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2609 * sync the config cache, and we lose power, then upon reboot we may |
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2610 * fail to open the pool because there are DVAs that the config cache |
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2611 * can't translate. Therefore, we first add the vdevs without |
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2612 * initializing metaslabs; sync the config cache (via spa_vdev_exit()); |
1635
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2613 * and then let spa_config_update() initialize the new metaslabs. |
1585
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2614 * |
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2615 * spa_load() checks for added-but-not-initialized vdevs, so that |
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2616 * if we lose power at any point in this sequence, the remaining |
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2617 * steps will be completed the next time we load the pool. |
789 | 2618 */ |
1635
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2619 (void) spa_vdev_exit(spa, vd, txg, 0); |
1585
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2620 |
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2621 mutex_enter(&spa_namespace_lock); |
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2622 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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2623 mutex_exit(&spa_namespace_lock); |
789 | 2624 |
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2625 return (0); |
789 | 2626 } |
2627 | |
2628 /* | |
2629 * Attach a device to a mirror. The arguments are the path to any device | |
2630 * in the mirror, and the nvroot for the new device. If the path specifies | |
2631 * a device that is not mirrored, we automatically insert the mirror vdev. | |
2632 * | |
2633 * If 'replacing' is specified, the new device is intended to replace the | |
2634 * existing device; in this case the two devices are made into their own | |
4451 | 2635 * mirror using the 'replacing' vdev, which is functionally identical to |
789 | 2636 * the mirror vdev (it actually reuses all the same ops) but has a few |
2637 * extra rules: you can't attach to it after it's been created, and upon | |
2638 * completion of resilvering, the first disk (the one being replaced) | |
2639 * is automatically detached. | |
2640 */ | |
2641 int | |
1544 | 2642 spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) |
789 | 2643 { |
2644 uint64_t txg, open_txg; | |
2645 int error; | |
2646 vdev_t *rvd = spa->spa_root_vdev; | |
2647 vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
2082 | 2648 vdev_ops_t *pvops; |
4527 | 2649 int is_log; |
789 | 2650 |
2651 txg = spa_vdev_enter(spa); | |
2652 | |
1544 | 2653 oldvd = vdev_lookup_by_guid(rvd, guid); |
789 | 2654 |
2655 if (oldvd == NULL) | |
2656 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
2657 | |
1585
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2658 if (!oldvd->vdev_ops->vdev_op_leaf) |
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2659 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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2660 |
789 | 2661 pvd = oldvd->vdev_parent; |
2662 | |
2082 | 2663 if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, |
4451 | 2664 VDEV_ALLOC_ADD)) != 0) |
2665 return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
2666 | |
2667 if (newrootvd->vdev_children != 1) | |
789 | 2668 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); |
2669 | |
2670 newvd = newrootvd->vdev_child[0]; | |
2671 | |
2672 if (!newvd->vdev_ops->vdev_op_leaf) | |
2673 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
2674 | |
2082 | 2675 if ((error = vdev_create(newrootvd, txg, replacing)) != 0) |
789 | 2676 return (spa_vdev_exit(spa, newrootvd, txg, error)); |
2677 | |
4527 | 2678 /* |
2679 * Spares can't replace logs | |
2680 */ | |
2681 is_log = oldvd->vdev_islog; | |
2682 if (is_log && newvd->vdev_isspare) | |
2683 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2684 | |
2082 | 2685 if (!replacing) { |
2686 /* | |
2687 * For attach, the only allowable parent is a mirror or the root | |
2688 * vdev. | |
2689 */ | |
2690 if (pvd->vdev_ops != &vdev_mirror_ops && | |
2691 pvd->vdev_ops != &vdev_root_ops) | |
2692 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2693 | |
2694 pvops = &vdev_mirror_ops; | |
2695 } else { | |
2696 /* | |
2697 * Active hot spares can only be replaced by inactive hot | |
2698 * spares. | |
2699 */ | |
2700 if (pvd->vdev_ops == &vdev_spare_ops && | |
2701 pvd->vdev_child[1] == oldvd && | |
2702 !spa_has_spare(spa, newvd->vdev_guid)) | |
2703 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
2704 | |
2705 /* | |
2706 * If the source is a hot spare, and the parent isn't already a | |
2707 * spare, then we want to create a new hot spare. Otherwise, we | |
3377
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2708 * want to create a replacing vdev. The user is not allowed to |
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2709 * attach to a spared vdev child unless the 'isspare' state is |
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2710 * the same (spare replaces spare, non-spare replaces |
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2711 * non-spare). |
2082 | 2712 */ |
2713 if (pvd->vdev_ops == &vdev_replacing_ops) | |
2714 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
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2715 else if (pvd->vdev_ops == &vdev_spare_ops && |
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2716 newvd->vdev_isspare != oldvd->vdev_isspare) |
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2717 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
2082 | 2718 else if (pvd->vdev_ops != &vdev_spare_ops && |
2719 newvd->vdev_isspare) | |
2720 pvops = &vdev_spare_ops; | |
2721 else | |
2722 pvops = &vdev_replacing_ops; | |
2723 } | |
2724 | |
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2725 /* |
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2726 * Compare the new device size with the replaceable/attachable |
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2727 * device size. |
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2728 */ |
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2729 if (newvd->vdev_psize < vdev_get_rsize(oldvd)) |
789 | 2730 return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
2731 | |
1732 | 2732 /* |
2733 * The new device cannot have a higher alignment requirement | |
2734 * than the top-level vdev. | |
2735 */ | |
2736 if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
789 | 2737 return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); |
2738 | |
2739 /* | |
2740 * If this is an in-place replacement, update oldvd's path and devid | |
2741 * to make it distinguishable from newvd, and unopenable from now on. | |
2742 */ | |
2743 if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
2744 spa_strfree(oldvd->vdev_path); | |
2745 oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
2746 KM_SLEEP); | |
2747 (void) sprintf(oldvd->vdev_path, "%s/%s", | |
2748 newvd->vdev_path, "old"); | |
2749 if (oldvd->vdev_devid != NULL) { | |
2750 spa_strfree(oldvd->vdev_devid); | |
2751 oldvd->vdev_devid = NULL; | |
2752 } | |
2753 } | |
2754 | |
2755 /* | |
2082 | 2756 * If the parent is not a mirror, or if we're replacing, insert the new |
2757 * mirror/replacing/spare vdev above oldvd. | |
789 | 2758 */ |
2759 if (pvd->vdev_ops != pvops) | |
2760 pvd = vdev_add_parent(oldvd, pvops); | |
2761 | |
2762 ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
2763 ASSERT(pvd->vdev_ops == pvops); | |
2764 ASSERT(oldvd->vdev_parent == pvd); | |
2765 | |
2766 /* | |
2767 * Extract the new device from its root and add it to pvd. | |
2768 */ | |
2769 vdev_remove_child(newrootvd, newvd); | |
2770 newvd->vdev_id = pvd->vdev_children; | |
2771 vdev_add_child(pvd, newvd); | |
2772 | |
1544 | 2773 /* |
2774 * If newvd is smaller than oldvd, but larger than its rsize, | |
2775 * the addition of newvd may have decreased our parent's asize. | |
2776 */ | |
2777 pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize); | |
2778 | |
789 | 2779 tvd = newvd->vdev_top; |
2780 ASSERT(pvd->vdev_top == tvd); | |
2781 ASSERT(tvd->vdev_parent == rvd); | |
2782 | |
2783 vdev_config_dirty(tvd); | |
2784 | |
2785 /* | |
2786 * Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate | |
2787 * upward when spa_vdev_exit() calls vdev_dtl_reassess(). | |
2788 */ | |
2789 open_txg = txg + TXG_CONCURRENT_STATES - 1; | |
2790 | |
2791 mutex_enter(&newvd->vdev_dtl_lock); | |
2792 space_map_add(&newvd->vdev_dtl_map, TXG_INITIAL, | |
2793 open_txg - TXG_INITIAL + 1); | |
2794 mutex_exit(&newvd->vdev_dtl_lock); | |
2795 | |
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2796 if (newvd->vdev_isspare) |
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|
2797 spa_spare_activate(newvd); |
1544 | 2798 |
789 | 2799 /* |
2800 * Mark newvd's DTL dirty in this txg. | |
2801 */ | |
1732 | 2802 vdev_dirty(tvd, VDD_DTL, newvd, txg); |
789 | 2803 |
2804 (void) spa_vdev_exit(spa, newrootvd, open_txg, 0); | |
2805 | |
2806 /* | |
4451 | 2807 * Kick off a resilver to update newvd. We need to grab the namespace |
2808 * lock because spa_scrub() needs to post a sysevent with the pool name. | |
789 | 2809 */ |
4451 | 2810 mutex_enter(&spa_namespace_lock); |
789 | 2811 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
4451 | 2812 mutex_exit(&spa_namespace_lock); |
789 | 2813 |
2814 return (0); | |
2815 } | |
2816 | |
2817 /* | |
2818 * Detach a device from a mirror or replacing vdev. | |
2819 * If 'replace_done' is specified, only detach if the parent | |
2820 * is a replacing vdev. | |
2821 */ | |
2822 int | |
1544 | 2823 spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done) |
789 | 2824 { |
2825 uint64_t txg; | |
2826 int c, t, error; | |
2827 vdev_t *rvd = spa->spa_root_vdev; | |
2828 vdev_t *vd, *pvd, *cvd, *tvd; | |
2082 | 2829 boolean_t unspare = B_FALSE; |
2830 uint64_t unspare_guid; | |
789 | 2831 |
2832 txg = spa_vdev_enter(spa); | |
2833 | |
1544 | 2834 vd = vdev_lookup_by_guid(rvd, guid); |
789 | 2835 |
2836 if (vd == NULL) | |
2837 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
2838 | |
1585
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diff
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|
2839 if (!vd->vdev_ops->vdev_op_leaf) |
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diff
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|
2840 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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2841 |
789 | 2842 pvd = vd->vdev_parent; |
2843 | |
2844 /* | |
2845 * If replace_done is specified, only remove this device if it's | |
2082 | 2846 * the first child of a replacing vdev. For the 'spare' vdev, either |
2847 * disk can be removed. | |
789 | 2848 */ |
2082 | 2849 if (replace_done) { |
2850 if (pvd->vdev_ops == &vdev_replacing_ops) { | |
2851 if (vd->vdev_id != 0) | |
2852 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
2853 } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
2854 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
2855 } | |
2856 } | |
2857 | |
2858 ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
4577 | 2859 spa_version(spa) >= SPA_VERSION_SPARES); |
789 | 2860 |
2861 /* | |
2082 | 2862 * Only mirror, replacing, and spare vdevs support detach. |
789 | 2863 */ |
2864 if (pvd->vdev_ops != &vdev_replacing_ops && | |
2082 | 2865 pvd->vdev_ops != &vdev_mirror_ops && |
2866 pvd->vdev_ops != &vdev_spare_ops) | |
789 | 2867 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
2868 | |
2869 /* | |
2870 * If there's only one replica, you can't detach it. | |
2871 */ | |
2872 if (pvd->vdev_children <= 1) | |
2873 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
2874 | |
2875 /* | |
2876 * If all siblings have non-empty DTLs, this device may have the only | |
2877 * valid copy of the data, which means we cannot safely detach it. | |
2878 * | |
2879 * XXX -- as in the vdev_offline() case, we really want a more | |
2880 * precise DTL check. | |
2881 */ | |
2882 for (c = 0; c < pvd->vdev_children; c++) { | |
2883 uint64_t dirty; | |
2884 | |
2885 cvd = pvd->vdev_child[c]; | |
2886 if (cvd == vd) | |
2887 continue; | |
2888 if (vdev_is_dead(cvd)) | |
2889 continue; | |
2890 mutex_enter(&cvd->vdev_dtl_lock); | |
2891 dirty = cvd->vdev_dtl_map.sm_space | | |
2892 cvd->vdev_dtl_scrub.sm_space; | |
2893 mutex_exit(&cvd->vdev_dtl_lock); | |
2894 if (!dirty) | |
2895 break; | |
2896 } | |
2082 | 2897 |
2898 /* | |
2899 * If we are a replacing or spare vdev, then we can always detach the | |
2900 * latter child, as that is how one cancels the operation. | |
2901 */ | |
2902 if ((pvd->vdev_ops == &vdev_mirror_ops || vd->vdev_id != 1) && | |
2903 c == pvd->vdev_children) | |
789 | 2904 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
2905 | |
2906 /* | |
2082 | 2907 * If we are detaching the original disk from a spare, then it implies |
2908 * that the spare should become a real disk, and be removed from the | |
2909 * active spare list for the pool. | |
2910 */ | |
2911 if (pvd->vdev_ops == &vdev_spare_ops && | |
2912 vd->vdev_id == 0) | |
2913 unspare = B_TRUE; | |
2914 | |
2915 /* | |
789 | 2916 * Erase the disk labels so the disk can be used for other things. |
2917 * This must be done after all other error cases are handled, | |
2918 * but before we disembowel vd (so we can still do I/O to it). | |
2919 * But if we can't do it, don't treat the error as fatal -- | |
2920 * it may be that the unwritability of the disk is the reason | |
2921 * it's being detached! | |
2922 */ | |
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2923 error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); |
789 | 2924 |
2925 /* | |
2926 * Remove vd from its parent and compact the parent's children. | |
2927 */ | |
2928 vdev_remove_child(pvd, vd); | |
2929 vdev_compact_children(pvd); | |
2930 | |
2931 /* | |
2932 * Remember one of the remaining children so we can get tvd below. | |
2933 */ | |
2934 cvd = pvd->vdev_child[0]; | |
2935 | |
2936 /* | |
2082 | 2937 * If we need to remove the remaining child from the list of hot spares, |
2938 * do it now, marking the vdev as no longer a spare in the process. We | |
2939 * must do this before vdev_remove_parent(), because that can change the | |
2940 * GUID if it creates a new toplevel GUID. | |
2941 */ | |
2942 if (unspare) { | |
2943 ASSERT(cvd->vdev_isspare); | |
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|
2944 spa_spare_remove(cvd); |
2082 | 2945 unspare_guid = cvd->vdev_guid; |
2946 } | |
2947 | |
2948 /* | |
789 | 2949 * If the parent mirror/replacing vdev only has one child, |
2950 * the parent is no longer needed. Remove it from the tree. | |
2951 */ | |
2952 if (pvd->vdev_children == 1) | |
2953 vdev_remove_parent(cvd); | |
2954 | |
2955 /* | |
2956 * We don't set tvd until now because the parent we just removed | |
2957 * may have been the previous top-level vdev. | |
2958 */ | |
2959 tvd = cvd->vdev_top; | |
2960 ASSERT(tvd->vdev_parent == rvd); | |
2961 | |
2962 /* | |
3377
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|
2963 * Reevaluate the parent vdev state. |
789 | 2964 */ |
4451 | 2965 vdev_propagate_state(cvd); |
789 | 2966 |
2967 /* | |
3377
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2968 * If the device we just detached was smaller than the others, it may be |
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|
2969 * possible to add metaslabs (i.e. grow the pool). vdev_metaslab_init() |
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2970 * can't fail because the existing metaslabs are already in core, so |
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|
2971 * there's nothing to read from disk. |
789 | 2972 */ |
1732 | 2973 VERIFY(vdev_metaslab_init(tvd, txg) == 0); |
789 | 2974 |
2975 vdev_config_dirty(tvd); | |
2976 | |
2977 /* | |
3377
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6393525 vdev_reopen() should verify that it's still the same device
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|
2978 * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that |
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|
2979 * vd->vdev_detached is set and free vd's DTL object in syncing context. |
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6393525 vdev_reopen() should verify that it's still the same device
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|
2980 * But first make sure we're not on any *other* txg's DTL list, to |
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|
2981 * prevent vd from being accessed after it's freed. |
789 | 2982 */ |
2983 for (t = 0; t < TXG_SIZE; t++) | |
2984 (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); | |
1732 | 2985 vd->vdev_detached = B_TRUE; |
2986 vdev_dirty(tvd, VDD_DTL, vd, txg); | |
789 | 2987 |
4451 | 2988 spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE); |
2989 | |
2082 | 2990 error = spa_vdev_exit(spa, vd, txg, 0); |
2991 | |
2992 /* | |
3377
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6393525 vdev_reopen() should verify that it's still the same device
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changeset
|
2993 * If this was the removal of the original device in a hot spare vdev, |
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6393525 vdev_reopen() should verify that it's still the same device
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|
2994 * then we want to go through and remove the device from the hot spare |
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|
2995 * list of every other pool. |
2082 | 2996 */ |
2997 if (unspare) { | |
2998 spa = NULL; | |
2999 mutex_enter(&spa_namespace_lock); | |
3000 while ((spa = spa_next(spa)) != NULL) { | |
3001 if (spa->spa_state != POOL_STATE_ACTIVE) | |
3002 continue; | |
3003 | |
3004 (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); | |
3005 } | |
3006 mutex_exit(&spa_namespace_lock); | |
3007 } | |
3008 | |
3009 return (error); | |
3010 } | |
3011 | |
3012 /* | |
5450 | 3013 * Remove a spares vdev from the nvlist config. |
2082 | 3014 */ |
5450 | 3015 static int |
3016 spa_remove_spares(spa_aux_vdev_t *sav, uint64_t guid, boolean_t unspare, | |
3017 nvlist_t **spares, int nspares, vdev_t *vd) | |
2082 | 3018 { |
5450 | 3019 nvlist_t *nv, **newspares; |
3020 int i, j; | |
2082 | 3021 |
3022 nv = NULL; | |
5450 | 3023 for (i = 0; i < nspares; i++) { |
3024 uint64_t theguid; | |
3025 | |
3026 VERIFY(nvlist_lookup_uint64(spares[i], | |
3027 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
3028 if (theguid == guid) { | |
3029 nv = spares[i]; | |
3030 break; | |
2082 | 3031 } |
3032 } | |
3033 | |
3034 /* | |
5450 | 3035 * Only remove the hot spare if it's not currently in use in this pool. |
2082 | 3036 */ |
5450 | 3037 if (nv == NULL && vd == NULL) |
3038 return (ENOENT); | |
3039 | |
3040 if (nv == NULL && vd != NULL) | |
3041 return (ENOTSUP); | |
3042 | |
3043 if (!unspare && nv != NULL && vd != NULL) | |
3044 return (EBUSY); | |
2082 | 3045 |
3046 if (nspares == 1) { | |
3047 newspares = NULL; | |
3048 } else { | |
3049 newspares = kmem_alloc((nspares - 1) * sizeof (void *), | |
3050 KM_SLEEP); | |
3051 for (i = 0, j = 0; i < nspares; i++) { | |
3052 if (spares[i] != nv) | |
3053 VERIFY(nvlist_dup(spares[i], | |
3054 &newspares[j++], KM_SLEEP) == 0); | |
3055 } | |
3056 } | |
3057 | |
5450 | 3058 VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_SPARES, |
2082 | 3059 DATA_TYPE_NVLIST_ARRAY) == 0); |
5450 | 3060 VERIFY(nvlist_add_nvlist_array(sav->sav_config, |
3061 ZPOOL_CONFIG_SPARES, newspares, nspares - 1) == 0); | |
2082 | 3062 for (i = 0; i < nspares - 1; i++) |
3063 nvlist_free(newspares[i]); | |
3064 kmem_free(newspares, (nspares - 1) * sizeof (void *)); | |
5450 | 3065 |
3066 return (0); | |
3067 } | |
3068 | |
3069 /* | |
3070 * Remove an l2cache vdev from the nvlist config. | |
3071 */ | |
3072 static int | |
3073 spa_remove_l2cache(spa_aux_vdev_t *sav, uint64_t guid, nvlist_t **l2cache, | |
3074 int nl2cache, vdev_t *vd) | |
3075 { | |
3076 nvlist_t *nv, **newl2cache; | |
3077 int i, j; | |
3078 | |
3079 nv = NULL; | |
3080 for (i = 0; i < nl2cache; i++) { | |
3081 uint64_t theguid; | |
3082 | |
3083 VERIFY(nvlist_lookup_uint64(l2cache[i], | |
3084 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
3085 if (theguid == guid) { | |
3086 nv = l2cache[i]; | |
3087 break; | |
3088 } | |
3089 } | |
3090 | |
3091 if (vd == NULL) { | |
3092 for (i = 0; i < nl2cache; i++) { | |
3093 if (sav->sav_vdevs[i]->vdev_guid == guid) { | |
3094 vd = sav->sav_vdevs[i]; | |
3095 break; | |
3096 } | |
3097 } | |
3098 } | |
3099 | |
3100 if (nv == NULL && vd == NULL) | |
3101 return (ENOENT); | |
3102 | |
3103 if (nv == NULL && vd != NULL) | |
3104 return (ENOTSUP); | |
3105 | |
3106 if (nl2cache == 1) { | |
3107 newl2cache = NULL; | |
3108 } else { | |
3109 newl2cache = kmem_alloc((nl2cache - 1) * sizeof (void *), | |
3110 KM_SLEEP); | |
3111 for (i = 0, j = 0; i < nl2cache; i++) { | |
3112 if (l2cache[i] != nv) | |
3113 VERIFY(nvlist_dup(l2cache[i], | |
3114 &newl2cache[j++], KM_SLEEP) == 0); | |
3115 } | |
3116 } | |
3117 | |
3118 VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
3119 DATA_TYPE_NVLIST_ARRAY) == 0); | |
3120 VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
3121 ZPOOL_CONFIG_L2CACHE, newl2cache, nl2cache - 1) == 0); | |
3122 for (i = 0; i < nl2cache - 1; i++) | |
3123 nvlist_free(newl2cache[i]); | |
3124 kmem_free(newl2cache, (nl2cache - 1) * sizeof (void *)); | |
3125 | |
3126 return (0); | |
3127 } | |
3128 | |
3129 /* | |
3130 * Remove a device from the pool. Currently, this supports removing only hot | |
3131 * spares and level 2 ARC devices. | |
3132 */ | |
3133 int | |
3134 spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
3135 { | |
3136 vdev_t *vd; | |
3137 nvlist_t **spares, **l2cache; | |
3138 uint_t nspares, nl2cache; | |
3139 int error = 0; | |
3140 | |
3141 spa_config_enter(spa, RW_WRITER, FTAG); | |
3142 | |
3143 vd = spa_lookup_by_guid(spa, guid); | |
3144 | |
3145 if (spa->spa_spares.sav_vdevs != NULL && | |
3146 spa_spare_exists(guid, NULL) && | |
3147 nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
3148 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0) { | |
3149 if ((error = spa_remove_spares(&spa->spa_spares, guid, unspare, | |
3150 spares, nspares, vd)) != 0) | |
3151 goto out; | |
3152 spa_load_spares(spa); | |
3153 spa->spa_spares.sav_sync = B_TRUE; | |
3154 goto out; | |
3155 } | |
3156 | |
3157 if (spa->spa_l2cache.sav_vdevs != NULL && | |
3158 spa_l2cache_exists(guid, NULL) && | |
3159 nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
3160 ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0) { | |
3161 if ((error = spa_remove_l2cache(&spa->spa_l2cache, guid, | |
3162 l2cache, nl2cache, vd)) != 0) | |
3163 goto out; | |
3164 spa_load_l2cache(spa); | |
3165 spa->spa_l2cache.sav_sync = B_TRUE; | |
3166 } | |
2082 | 3167 |
3168 out: | |
3169 spa_config_exit(spa, FTAG); | |
5450 | 3170 return (error); |
789 | 3171 } |
3172 | |
3173 /* | |
4451 | 3174 * Find any device that's done replacing, or a vdev marked 'unspare' that's |
3175 * current spared, so we can detach it. | |
789 | 3176 */ |
1544 | 3177 static vdev_t * |
4451 | 3178 spa_vdev_resilver_done_hunt(vdev_t *vd) |
789 | 3179 { |
1544 | 3180 vdev_t *newvd, *oldvd; |
789 | 3181 int c; |
3182 | |
1544 | 3183 for (c = 0; c < vd->vdev_children; c++) { |
4451 | 3184 oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
1544 | 3185 if (oldvd != NULL) |
3186 return (oldvd); | |
3187 } | |
789 | 3188 |
4451 | 3189 /* |
3190 * Check for a completed replacement. | |
3191 */ | |
789 | 3192 if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { |
1544 | 3193 oldvd = vd->vdev_child[0]; |
3194 newvd = vd->vdev_child[1]; | |
789 | 3195 |
1544 | 3196 mutex_enter(&newvd->vdev_dtl_lock); |
3197 if (newvd->vdev_dtl_map.sm_space == 0 && | |
3198 newvd->vdev_dtl_scrub.sm_space == 0) { | |
3199 mutex_exit(&newvd->vdev_dtl_lock); | |
3200 return (oldvd); | |
3201 } | |
3202 mutex_exit(&newvd->vdev_dtl_lock); | |
3203 } | |
789 | 3204 |
4451 | 3205 /* |
3206 * Check for a completed resilver with the 'unspare' flag set. | |
3207 */ | |
3208 if (vd->vdev_ops == &vdev_spare_ops && vd->vdev_children == 2) { | |
3209 newvd = vd->vdev_child[0]; | |
3210 oldvd = vd->vdev_child[1]; | |
3211 | |
3212 mutex_enter(&newvd->vdev_dtl_lock); | |
3213 if (newvd->vdev_unspare && | |
3214 newvd->vdev_dtl_map.sm_space == 0 && | |
3215 newvd->vdev_dtl_scrub.sm_space == 0) { | |
3216 newvd->vdev_unspare = 0; | |
3217 mutex_exit(&newvd->vdev_dtl_lock); | |
3218 return (oldvd); | |
3219 } | |
3220 mutex_exit(&newvd->vdev_dtl_lock); | |
3221 } | |
3222 | |
1544 | 3223 return (NULL); |
789 | 3224 } |
3225 | |
1544 | 3226 static void |
4451 | 3227 spa_vdev_resilver_done(spa_t *spa) |
789 | 3228 { |
1544 | 3229 vdev_t *vd; |
2082 | 3230 vdev_t *pvd; |
1544 | 3231 uint64_t guid; |
2082 | 3232 uint64_t pguid = 0; |
789 | 3233 |
1544 | 3234 spa_config_enter(spa, RW_READER, FTAG); |
789 | 3235 |
4451 | 3236 while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { |
1544 | 3237 guid = vd->vdev_guid; |
2082 | 3238 /* |
3239 * If we have just finished replacing a hot spared device, then | |
3240 * we need to detach the parent's first child (the original hot | |
3241 * spare) as well. | |
3242 */ | |
3243 pvd = vd->vdev_parent; | |
3244 if (pvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3245 pvd->vdev_id == 0) { | |
3246 ASSERT(pvd->vdev_ops == &vdev_replacing_ops); | |
3247 ASSERT(pvd->vdev_parent->vdev_children == 2); | |
3248 pguid = pvd->vdev_parent->vdev_child[1]->vdev_guid; | |
3249 } | |
1544 | 3250 spa_config_exit(spa, FTAG); |
3251 if (spa_vdev_detach(spa, guid, B_TRUE) != 0) | |
3252 return; | |
2082 | 3253 if (pguid != 0 && spa_vdev_detach(spa, pguid, B_TRUE) != 0) |
3254 return; | |
1544 | 3255 spa_config_enter(spa, RW_READER, FTAG); |
789 | 3256 } |
3257 | |
1544 | 3258 spa_config_exit(spa, FTAG); |
789 | 3259 } |
3260 | |
3261 /* | |
1354
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3262 * Update the stored path for this vdev. Dirty the vdev configuration, relying |
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3263 * on spa_vdev_enter/exit() to synchronize the labels and cache. |
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3264 */ |
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|
3265 int |
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3266 spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) |
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3267 { |
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3268 vdev_t *rvd, *vd; |
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3269 uint64_t txg; |
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3270 |
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3271 rvd = spa->spa_root_vdev; |
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3272 |
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3273 txg = spa_vdev_enter(spa); |
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3274 |
2082 | 3275 if ((vd = vdev_lookup_by_guid(rvd, guid)) == NULL) { |
3276 /* | |
5450 | 3277 * Determine if this is a reference to a hot spare or l2cache |
3278 * device. If it is, update the path as stored in their | |
3279 * device list. | |
2082 | 3280 */ |
5450 | 3281 nvlist_t **spares, **l2cache; |
3282 uint_t i, nspares, nl2cache; | |
3283 | |
3284 if (spa->spa_spares.sav_config != NULL) { | |
3285 VERIFY(nvlist_lookup_nvlist_array( | |
3286 spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
3287 &spares, &nspares) == 0); | |
2082 | 3288 for (i = 0; i < nspares; i++) { |
3289 uint64_t theguid; | |
3290 VERIFY(nvlist_lookup_uint64(spares[i], | |
3291 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
5450 | 3292 if (theguid == guid) { |
3293 VERIFY(nvlist_add_string(spares[i], | |
3294 ZPOOL_CONFIG_PATH, newpath) == 0); | |
3295 spa_load_spares(spa); | |
3296 spa->spa_spares.sav_sync = B_TRUE; | |
3297 return (spa_vdev_exit(spa, NULL, txg, | |
3298 0)); | |
3299 } | |
2082 | 3300 } |
3301 } | |
5450 | 3302 |
3303 if (spa->spa_l2cache.sav_config != NULL) { | |
3304 VERIFY(nvlist_lookup_nvlist_array( | |
3305 spa->spa_l2cache.sav_config, ZPOOL_CONFIG_L2CACHE, | |
3306 &l2cache, &nl2cache) == 0); | |
3307 for (i = 0; i < nl2cache; i++) { | |
3308 uint64_t theguid; | |
3309 VERIFY(nvlist_lookup_uint64(l2cache[i], | |
3310 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
3311 if (theguid == guid) { | |
3312 VERIFY(nvlist_add_string(l2cache[i], | |
3313 ZPOOL_CONFIG_PATH, newpath) == 0); | |
3314 spa_load_l2cache(spa); | |
3315 spa->spa_l2cache.sav_sync = B_TRUE; | |
3316 return (spa_vdev_exit(spa, NULL, txg, | |
3317 0)); | |
3318 } | |
3319 } | |
3320 } | |
3321 | |
3322 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
2082 | 3323 } |
1354
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3324 |
1585
4ad213e858a9
6395480 ztest ASSERT: rbt.bt_objset == wbt.bt_objset, line 2041
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3325 if (!vd->vdev_ops->vdev_op_leaf) |
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3326 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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6395480 ztest ASSERT: rbt.bt_objset == wbt.bt_objset, line 2041
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|
3327 |
1354
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3328 spa_strfree(vd->vdev_path); |
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3329 vd->vdev_path = spa_strdup(newpath); |
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3330 |
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3331 vdev_config_dirty(vd->vdev_top); |
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3332 |
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3333 return (spa_vdev_exit(spa, NULL, txg, 0)); |
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3334 } |
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3335 |
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3336 /* |
789 | 3337 * ========================================================================== |
3338 * SPA Scrubbing | |
3339 * ========================================================================== | |
3340 */ | |
3341 | |
3342 static void | |
3343 spa_scrub_io_done(zio_t *zio) | |
3344 { | |
3345 spa_t *spa = zio->io_spa; | |
3346 | |
4309
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3347 arc_data_buf_free(zio->io_data, zio->io_size); |
789 | 3348 |
3349 mutex_enter(&spa->spa_scrub_lock); | |
1544 | 3350 if (zio->io_error && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { |
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3351 vdev_t *vd = zio->io_vd ? zio->io_vd : spa->spa_root_vdev; |
789 | 3352 spa->spa_scrub_errors++; |
3353 mutex_enter(&vd->vdev_stat_lock); | |
3354 vd->vdev_stat.vs_scrub_errors++; | |
3355 mutex_exit(&vd->vdev_stat_lock); | |
3356 } | |
3697
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3357 |
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3358 if (--spa->spa_scrub_inflight < spa->spa_scrub_maxinflight) |
1544 | 3359 cv_broadcast(&spa->spa_scrub_io_cv); |
3697
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3360 |
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3361 ASSERT(spa->spa_scrub_inflight >= 0); |
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3362 |
1544 | 3363 mutex_exit(&spa->spa_scrub_lock); |
789 | 3364 } |
3365 | |
3366 static void | |
1544 | 3367 spa_scrub_io_start(spa_t *spa, blkptr_t *bp, int priority, int flags, |
3368 zbookmark_t *zb) | |
789 | 3369 { |
3370 size_t size = BP_GET_LSIZE(bp); | |
3697
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3371 void *data; |
789 | 3372 |
3373 mutex_enter(&spa->spa_scrub_lock); | |
3697
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3374 /* |
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3375 * Do not give too much work to vdev(s). |
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3376 */ |
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3377 while (spa->spa_scrub_inflight >= spa->spa_scrub_maxinflight) { |
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3378 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); |
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3379 } |
789 | 3380 spa->spa_scrub_inflight++; |
3381 mutex_exit(&spa->spa_scrub_lock); | |
3382 | |
4309
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3383 data = arc_data_buf_alloc(size); |
3697
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3384 |
1544 | 3385 if (zb->zb_level == -1 && BP_GET_TYPE(bp) != DMU_OT_OBJSET) |
3386 flags |= ZIO_FLAG_SPECULATIVE; /* intent log block */ | |
3387 | |
1807
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3388 flags |= ZIO_FLAG_SCRUB_THREAD | ZIO_FLAG_CANFAIL; |
1544 | 3389 |
789 | 3390 zio_nowait(zio_read(NULL, spa, bp, data, size, |
1544 | 3391 spa_scrub_io_done, NULL, priority, flags, zb)); |
789 | 3392 } |
3393 | |
3394 /* ARGSUSED */ | |
3395 static int | |
3396 spa_scrub_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) | |
3397 { | |
3398 blkptr_t *bp = &bc->bc_blkptr; | |
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3399 vdev_t *vd = spa->spa_root_vdev; |
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3400 dva_t *dva = bp->blk_dva; |
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3401 int needs_resilver = B_FALSE; |
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3402 int d; |
789 | 3403 |
1775
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3404 if (bc->bc_errno) { |
789 | 3405 /* |
3406 * We can't scrub this block, but we can continue to scrub | |
3407 * the rest of the pool. Note the error and move along. | |
3408 */ | |
3409 mutex_enter(&spa->spa_scrub_lock); | |
3410 spa->spa_scrub_errors++; | |
3411 mutex_exit(&spa->spa_scrub_lock); | |
3412 | |
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3413 mutex_enter(&vd->vdev_stat_lock); |
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3414 vd->vdev_stat.vs_scrub_errors++; |
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3415 mutex_exit(&vd->vdev_stat_lock); |
789 | 3416 |
3417 return (ERESTART); | |
3418 } | |
3419 | |
3420 ASSERT(bp->blk_birth < spa->spa_scrub_maxtxg); | |
3421 | |
1775
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3422 for (d = 0; d < BP_GET_NDVAS(bp); d++) { |
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3423 vd = vdev_lookup_top(spa, DVA_GET_VDEV(&dva[d])); |
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3424 |
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|
3425 ASSERT(vd != NULL); |
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|
3426 |
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3427 /* |
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3428 * Keep track of how much data we've examined so that |
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3429 * zpool(1M) status can make useful progress reports. |
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3430 */ |
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|
3431 mutex_enter(&vd->vdev_stat_lock); |
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3432 vd->vdev_stat.vs_scrub_examined += DVA_GET_ASIZE(&dva[d]); |
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3433 mutex_exit(&vd->vdev_stat_lock); |
789 | 3434 |
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3435 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER) { |
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3436 if (DVA_GET_GANG(&dva[d])) { |
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3437 /* |
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3438 * Gang members may be spread across multiple |
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3439 * vdevs, so the best we can do is look at the |
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3440 * pool-wide DTL. |
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3441 * XXX -- it would be better to change our |
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3442 * allocation policy to ensure that this can't |
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3443 * happen. |
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3444 */ |
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3445 vd = spa->spa_root_vdev; |
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3446 } |
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3447 if (vdev_dtl_contains(&vd->vdev_dtl_map, |
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3448 bp->blk_birth, 1)) |
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3449 needs_resilver = B_TRUE; |
789 | 3450 } |
1775
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3451 } |
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3452 |
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3453 if (spa->spa_scrub_type == POOL_SCRUB_EVERYTHING) |
789 | 3454 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_SCRUB, |
1544 | 3455 ZIO_FLAG_SCRUB, &bc->bc_bookmark); |
1775
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3456 else if (needs_resilver) |
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3457 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_RESILVER, |
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3458 ZIO_FLAG_RESILVER, &bc->bc_bookmark); |
789 | 3459 |
3460 return (0); | |
3461 } | |
3462 | |
3463 static void | |
3464 spa_scrub_thread(spa_t *spa) | |
3465 { | |
3466 callb_cpr_t cprinfo; | |
3467 traverse_handle_t *th = spa->spa_scrub_th; | |
3468 vdev_t *rvd = spa->spa_root_vdev; | |
3469 pool_scrub_type_t scrub_type = spa->spa_scrub_type; | |
3470 int error = 0; | |
3471 boolean_t complete; | |
3472 | |
3473 CALLB_CPR_INIT(&cprinfo, &spa->spa_scrub_lock, callb_generic_cpr, FTAG); | |
3474 | |
797
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diff
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|
3475 /* |
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diff
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|
3476 * If we're restarting due to a snapshot create/delete, |
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3477 * wait for that to complete. |
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6344108 snapshot create/delete interlock with scrub/resilver must sync txg
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3478 */ |
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3479 txg_wait_synced(spa_get_dsl(spa), 0); |
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3480 |
1544 | 3481 dprintf("start %s mintxg=%llu maxtxg=%llu\n", |
3482 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
3483 spa->spa_scrub_mintxg, spa->spa_scrub_maxtxg); | |
3484 | |
3485 spa_config_enter(spa, RW_WRITER, FTAG); | |
3486 vdev_reopen(rvd); /* purge all vdev caches */ | |
789 | 3487 vdev_config_dirty(rvd); /* rewrite all disk labels */ |
3488 vdev_scrub_stat_update(rvd, scrub_type, B_FALSE); | |
1544 | 3489 spa_config_exit(spa, FTAG); |
789 | 3490 |
3491 mutex_enter(&spa->spa_scrub_lock); | |
3492 spa->spa_scrub_errors = 0; | |
3493 spa->spa_scrub_active = 1; | |
1544 | 3494 ASSERT(spa->spa_scrub_inflight == 0); |
789 | 3495 |
3496 while (!spa->spa_scrub_stop) { | |
3497 CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
1544 | 3498 while (spa->spa_scrub_suspended) { |
789 | 3499 spa->spa_scrub_active = 0; |
3500 cv_broadcast(&spa->spa_scrub_cv); | |
3501 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
3502 spa->spa_scrub_active = 1; | |
3503 } | |
3504 CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_scrub_lock); | |
3505 | |
3506 if (spa->spa_scrub_restart_txg != 0) | |
3507 break; | |
3508 | |
3509 mutex_exit(&spa->spa_scrub_lock); | |
3510 error = traverse_more(th); | |
3511 mutex_enter(&spa->spa_scrub_lock); | |
3512 if (error != EAGAIN) | |
3513 break; | |
3514 } | |
3515 | |
3516 while (spa->spa_scrub_inflight) | |
3517 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
3518 | |
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3519 spa->spa_scrub_active = 0; |
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3520 cv_broadcast(&spa->spa_scrub_cv); |
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3521 |
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3522 mutex_exit(&spa->spa_scrub_lock); |
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3523 |
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3524 spa_config_enter(spa, RW_WRITER, FTAG); |
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3525 |
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3526 mutex_enter(&spa->spa_scrub_lock); |
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3527 |
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|
3528 /* |
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3529 * Note: we check spa_scrub_restart_txg under both spa_scrub_lock |
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3530 * AND the spa config lock to synchronize with any config changes |
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3531 * that revise the DTLs under spa_vdev_enter() / spa_vdev_exit(). |
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3532 */ |
789 | 3533 if (spa->spa_scrub_restart_txg != 0) |
3534 error = ERESTART; | |
3535 | |
1544 | 3536 if (spa->spa_scrub_stop) |
3537 error = EINTR; | |
3538 | |
789 | 3539 /* |
1544 | 3540 * Even if there were uncorrectable errors, we consider the scrub |
3541 * completed. The downside is that if there is a transient error during | |
3542 * a resilver, we won't resilver the data properly to the target. But | |
3543 * if the damage is permanent (more likely) we will resilver forever, | |
3544 * which isn't really acceptable. Since there is enough information for | |
3545 * the user to know what has failed and why, this seems like a more | |
3546 * tractable approach. | |
789 | 3547 */ |
1544 | 3548 complete = (error == 0); |
789 | 3549 |
1544 | 3550 dprintf("end %s to maxtxg=%llu %s, traverse=%d, %llu errors, stop=%u\n", |
3551 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
789 | 3552 spa->spa_scrub_maxtxg, complete ? "done" : "FAILED", |
3553 error, spa->spa_scrub_errors, spa->spa_scrub_stop); | |
3554 | |
3555 mutex_exit(&spa->spa_scrub_lock); | |
3556 | |
3557 /* | |
3558 * If the scrub/resilver completed, update all DTLs to reflect this. | |
3559 * Whether it succeeded or not, vacate all temporary scrub DTLs. | |
3560 */ | |
3561 vdev_dtl_reassess(rvd, spa_last_synced_txg(spa) + 1, | |
3562 complete ? spa->spa_scrub_maxtxg : 0, B_TRUE); | |
3563 vdev_scrub_stat_update(rvd, POOL_SCRUB_NONE, complete); | |
1544 | 3564 spa_errlog_rotate(spa); |
1601
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3565 |
4451 | 3566 if (scrub_type == POOL_SCRUB_RESILVER && complete) |
3567 spa_event_notify(spa, NULL, ESC_ZFS_RESILVER_FINISH); | |
3568 | |
1544 | 3569 spa_config_exit(spa, FTAG); |
789 | 3570 |
3571 mutex_enter(&spa->spa_scrub_lock); | |
3572 | |
1544 | 3573 /* |
3574 * We may have finished replacing a device. | |
3575 * Let the async thread assess this and handle the detach. | |
3576 */ | |
4451 | 3577 spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); |
789 | 3578 |
3579 /* | |
3580 * If we were told to restart, our final act is to start a new scrub. | |
3581 */ | |
3582 if (error == ERESTART) | |
1544 | 3583 spa_async_request(spa, scrub_type == POOL_SCRUB_RESILVER ? |
3584 SPA_ASYNC_RESILVER : SPA_ASYNC_SCRUB); | |
789 | 3585 |
1544 | 3586 spa->spa_scrub_type = POOL_SCRUB_NONE; |
3587 spa->spa_scrub_active = 0; | |
3588 spa->spa_scrub_thread = NULL; | |
3589 cv_broadcast(&spa->spa_scrub_cv); | |
789 | 3590 CALLB_CPR_EXIT(&cprinfo); /* drops &spa->spa_scrub_lock */ |
3591 thread_exit(); | |
3592 } | |
3593 | |
3594 void | |
3595 spa_scrub_suspend(spa_t *spa) | |
3596 { | |
3597 mutex_enter(&spa->spa_scrub_lock); | |
1544 | 3598 spa->spa_scrub_suspended++; |
789 | 3599 while (spa->spa_scrub_active) { |
3600 cv_broadcast(&spa->spa_scrub_cv); | |
3601 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
3602 } | |
3603 while (spa->spa_scrub_inflight) | |
3604 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
3605 mutex_exit(&spa->spa_scrub_lock); | |
3606 } | |
3607 | |
3608 void | |
3609 spa_scrub_resume(spa_t *spa) | |
3610 { | |
3611 mutex_enter(&spa->spa_scrub_lock); | |
1544 | 3612 ASSERT(spa->spa_scrub_suspended != 0); |
3613 if (--spa->spa_scrub_suspended == 0) | |
789 | 3614 cv_broadcast(&spa->spa_scrub_cv); |
3615 mutex_exit(&spa->spa_scrub_lock); | |
3616 } | |
3617 | |
3618 void | |
3619 spa_scrub_restart(spa_t *spa, uint64_t txg) | |
3620 { | |
3621 /* | |
3622 * Something happened (e.g. snapshot create/delete) that means | |
3623 * we must restart any in-progress scrubs. The itinerary will | |
3624 * fix this properly. | |
3625 */ | |
3626 mutex_enter(&spa->spa_scrub_lock); | |
3627 spa->spa_scrub_restart_txg = txg; | |
3628 mutex_exit(&spa->spa_scrub_lock); | |
3629 } | |
3630 | |
1544 | 3631 int |
3632 spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force) | |
789 | 3633 { |
3634 space_seg_t *ss; | |
3635 uint64_t mintxg, maxtxg; | |
3636 vdev_t *rvd = spa->spa_root_vdev; | |
3637 | |
4808 | 3638 ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
3639 ASSERT(!spa_config_held(spa, RW_WRITER)); | |
3640 | |
789 | 3641 if ((uint_t)type >= POOL_SCRUB_TYPES) |
3642 return (ENOTSUP); | |
3643 | |
1544 | 3644 mutex_enter(&spa->spa_scrub_lock); |
3645 | |
789 | 3646 /* |
3647 * If there's a scrub or resilver already in progress, stop it. | |
3648 */ | |
3649 while (spa->spa_scrub_thread != NULL) { | |
3650 /* | |
3651 * Don't stop a resilver unless forced. | |
3652 */ | |
1544 | 3653 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER && !force) { |
3654 mutex_exit(&spa->spa_scrub_lock); | |
789 | 3655 return (EBUSY); |
1544 | 3656 } |
789 | 3657 spa->spa_scrub_stop = 1; |
3658 cv_broadcast(&spa->spa_scrub_cv); | |
3659 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
3660 } | |
3661 | |
3662 /* | |
3663 * Terminate the previous traverse. | |
3664 */ | |
3665 if (spa->spa_scrub_th != NULL) { | |
3666 traverse_fini(spa->spa_scrub_th); | |
3667 spa->spa_scrub_th = NULL; | |
3668 } | |
3669 | |
1544 | 3670 if (rvd == NULL) { |
3671 ASSERT(spa->spa_scrub_stop == 0); | |
3672 ASSERT(spa->spa_scrub_type == type); | |
3673 ASSERT(spa->spa_scrub_restart_txg == 0); | |
3674 mutex_exit(&spa->spa_scrub_lock); | |
3675 return (0); | |
3676 } | |
789 | 3677 |
3678 mintxg = TXG_INITIAL - 1; | |
3679 maxtxg = spa_last_synced_txg(spa) + 1; | |
3680 | |
1544 | 3681 mutex_enter(&rvd->vdev_dtl_lock); |
789 | 3682 |
1544 | 3683 if (rvd->vdev_dtl_map.sm_space == 0) { |
3684 /* | |
3685 * The pool-wide DTL is empty. | |
1732 | 3686 * If this is a resilver, there's nothing to do except |
3687 * check whether any in-progress replacements have completed. | |
1544 | 3688 */ |
1732 | 3689 if (type == POOL_SCRUB_RESILVER) { |
1544 | 3690 type = POOL_SCRUB_NONE; |
4451 | 3691 spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); |
1732 | 3692 } |
1544 | 3693 } else { |
3694 /* | |
3695 * The pool-wide DTL is non-empty. | |
3696 * If this is a normal scrub, upgrade to a resilver instead. | |
3697 */ | |
3698 if (type == POOL_SCRUB_EVERYTHING) | |
3699 type = POOL_SCRUB_RESILVER; | |
3700 } | |
789 | 3701 |
1544 | 3702 if (type == POOL_SCRUB_RESILVER) { |
789 | 3703 /* |
3704 * Determine the resilvering boundaries. | |
3705 * | |
3706 * Note: (mintxg, maxtxg) is an open interval, | |
3707 * i.e. mintxg and maxtxg themselves are not included. | |
3708 * | |
3709 * Note: for maxtxg, we MIN with spa_last_synced_txg(spa) + 1 | |
3710 * so we don't claim to resilver a txg that's still changing. | |
3711 */ | |
3712 ss = avl_first(&rvd->vdev_dtl_map.sm_root); | |
1544 | 3713 mintxg = ss->ss_start - 1; |
789 | 3714 ss = avl_last(&rvd->vdev_dtl_map.sm_root); |
1544 | 3715 maxtxg = MIN(ss->ss_end, maxtxg); |
4451 | 3716 |
3717 spa_event_notify(spa, NULL, ESC_ZFS_RESILVER_START); | |
789 | 3718 } |
3719 | |
1544 | 3720 mutex_exit(&rvd->vdev_dtl_lock); |
3721 | |
3722 spa->spa_scrub_stop = 0; | |
3723 spa->spa_scrub_type = type; | |
3724 spa->spa_scrub_restart_txg = 0; | |
3725 | |
3726 if (type != POOL_SCRUB_NONE) { | |
3727 spa->spa_scrub_mintxg = mintxg; | |
789 | 3728 spa->spa_scrub_maxtxg = maxtxg; |
3729 spa->spa_scrub_th = traverse_init(spa, spa_scrub_cb, NULL, | |
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3730 ADVANCE_PRE | ADVANCE_PRUNE | ADVANCE_ZIL, |
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3731 ZIO_FLAG_CANFAIL); |
789 | 3732 traverse_add_pool(spa->spa_scrub_th, mintxg, maxtxg); |
3733 spa->spa_scrub_thread = thread_create(NULL, 0, | |
3734 spa_scrub_thread, spa, 0, &p0, TS_RUN, minclsyspri); | |
3735 } | |
3736 | |
1544 | 3737 mutex_exit(&spa->spa_scrub_lock); |
3738 | |
789 | 3739 return (0); |
3740 } | |
3741 | |
1544 | 3742 /* |
3743 * ========================================================================== | |
3744 * SPA async task processing | |
3745 * ========================================================================== | |
3746 */ | |
3747 | |
3748 static void | |
4451 | 3749 spa_async_remove(spa_t *spa, vdev_t *vd) |
789 | 3750 { |
1544 | 3751 vdev_t *tvd; |
3752 int c; | |
3753 | |
4451 | 3754 for (c = 0; c < vd->vdev_children; c++) { |
3755 tvd = vd->vdev_child[c]; | |
3756 if (tvd->vdev_remove_wanted) { | |
3757 tvd->vdev_remove_wanted = 0; | |
3758 vdev_set_state(tvd, B_FALSE, VDEV_STATE_REMOVED, | |
3759 VDEV_AUX_NONE); | |
5329 | 3760 vdev_clear(spa, tvd, B_TRUE); |
4451 | 3761 vdev_config_dirty(tvd->vdev_top); |
1544 | 3762 } |
4451 | 3763 spa_async_remove(spa, tvd); |
1544 | 3764 } |
3765 } | |
3766 | |
3767 static void | |
3768 spa_async_thread(spa_t *spa) | |
3769 { | |
3770 int tasks; | |
4451 | 3771 uint64_t txg; |
1544 | 3772 |
3773 ASSERT(spa->spa_sync_on); | |
789 | 3774 |
1544 | 3775 mutex_enter(&spa->spa_async_lock); |
3776 tasks = spa->spa_async_tasks; | |
3777 spa->spa_async_tasks = 0; | |
3778 mutex_exit(&spa->spa_async_lock); | |
3779 | |
3780 /* | |
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3781 * See if the config needs to be updated. |
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3782 */ |
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3783 if (tasks & SPA_ASYNC_CONFIG_UPDATE) { |
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3784 mutex_enter(&spa_namespace_lock); |
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3785 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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3786 mutex_exit(&spa_namespace_lock); |
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3787 } |
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3788 |
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3789 /* |
4451 | 3790 * See if any devices need to be marked REMOVED. |
5329 | 3791 * |
3792 * XXX - We avoid doing this when we are in | |
3793 * I/O failure state since spa_vdev_enter() grabs | |
3794 * the namespace lock and would not be able to obtain | |
3795 * the writer config lock. | |
1544 | 3796 */ |
5329 | 3797 if (tasks & SPA_ASYNC_REMOVE && |
3798 spa_state(spa) != POOL_STATE_IO_FAILURE) { | |
4451 | 3799 txg = spa_vdev_enter(spa); |
3800 spa_async_remove(spa, spa->spa_root_vdev); | |
3801 (void) spa_vdev_exit(spa, NULL, txg, 0); | |
3802 } | |
1544 | 3803 |
3804 /* | |
3805 * If any devices are done replacing, detach them. | |
3806 */ | |
4451 | 3807 if (tasks & SPA_ASYNC_RESILVER_DONE) |
3808 spa_vdev_resilver_done(spa); | |
789 | 3809 |
1544 | 3810 /* |
4451 | 3811 * Kick off a scrub. When starting a RESILVER scrub (or an EVERYTHING |
3812 * scrub which can become a resilver), we need to hold | |
3813 * spa_namespace_lock() because the sysevent we post via | |
3814 * spa_event_notify() needs to get the name of the pool. | |
1544 | 3815 */ |
4451 | 3816 if (tasks & SPA_ASYNC_SCRUB) { |
3817 mutex_enter(&spa_namespace_lock); | |
1544 | 3818 VERIFY(spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_TRUE) == 0); |
4451 | 3819 mutex_exit(&spa_namespace_lock); |
3820 } | |
1544 | 3821 |
3822 /* | |
3823 * Kick off a resilver. | |
3824 */ | |
4451 | 3825 if (tasks & SPA_ASYNC_RESILVER) { |
3826 mutex_enter(&spa_namespace_lock); | |
1544 | 3827 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
4451 | 3828 mutex_exit(&spa_namespace_lock); |
3829 } | |
1544 | 3830 |
3831 /* | |
3832 * Let the world know that we're done. | |
3833 */ | |
3834 mutex_enter(&spa->spa_async_lock); | |
3835 spa->spa_async_thread = NULL; | |
3836 cv_broadcast(&spa->spa_async_cv); | |
3837 mutex_exit(&spa->spa_async_lock); | |
3838 thread_exit(); | |
3839 } | |
3840 | |
3841 void | |
3842 spa_async_suspend(spa_t *spa) | |
3843 { | |
3844 mutex_enter(&spa->spa_async_lock); | |
3845 spa->spa_async_suspended++; | |
3846 while (spa->spa_async_thread != NULL) | |
3847 cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
3848 mutex_exit(&spa->spa_async_lock); | |
3849 } | |
3850 | |
3851 void | |
3852 spa_async_resume(spa_t *spa) | |
3853 { | |
3854 mutex_enter(&spa->spa_async_lock); | |
3855 ASSERT(spa->spa_async_suspended != 0); | |
3856 spa->spa_async_suspended--; | |
3857 mutex_exit(&spa->spa_async_lock); | |
3858 } | |
3859 | |
3860 static void | |
3861 spa_async_dispatch(spa_t *spa) | |
3862 { | |
3863 mutex_enter(&spa->spa_async_lock); | |
3864 if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
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3865 spa->spa_async_thread == NULL && |
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3866 rootdir != NULL && !vn_is_readonly(rootdir)) |
1544 | 3867 spa->spa_async_thread = thread_create(NULL, 0, |
3868 spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
3869 mutex_exit(&spa->spa_async_lock); | |
3870 } | |
3871 | |
3872 void | |
3873 spa_async_request(spa_t *spa, int task) | |
3874 { | |
3875 mutex_enter(&spa->spa_async_lock); | |
3876 spa->spa_async_tasks |= task; | |
3877 mutex_exit(&spa->spa_async_lock); | |
789 | 3878 } |
3879 | |
3880 /* | |
3881 * ========================================================================== | |
3882 * SPA syncing routines | |
3883 * ========================================================================== | |
3884 */ | |
3885 | |
3886 static void | |
3887 spa_sync_deferred_frees(spa_t *spa, uint64_t txg) | |
3888 { | |
3889 bplist_t *bpl = &spa->spa_sync_bplist; | |
3890 dmu_tx_t *tx; | |
3891 blkptr_t blk; | |
3892 uint64_t itor = 0; | |
3893 zio_t *zio; | |
3894 int error; | |
3895 uint8_t c = 1; | |
3896 | |
3897 zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CONFIG_HELD); | |
3898 | |
3899 while (bplist_iterate(bpl, &itor, &blk) == 0) | |
3900 zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL)); | |
3901 | |
3902 error = zio_wait(zio); | |
3903 ASSERT3U(error, ==, 0); | |
3904 | |
3905 tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
3906 bplist_vacate(bpl, tx); | |
3907 | |
3908 /* | |
3909 * Pre-dirty the first block so we sync to convergence faster. | |
3910 * (Usually only the first block is needed.) | |
3911 */ | |
3912 dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx); | |
3913 dmu_tx_commit(tx); | |
3914 } | |
3915 | |
3916 static void | |
2082 | 3917 spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) |
3918 { | |
3919 char *packed = NULL; | |
3920 size_t nvsize = 0; | |
3921 dmu_buf_t *db; | |
3922 | |
3923 VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
3924 | |
3925 packed = kmem_alloc(nvsize, KM_SLEEP); | |
3926 | |
3927 VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
3928 KM_SLEEP) == 0); | |
3929 | |
3930 dmu_write(spa->spa_meta_objset, obj, 0, nvsize, packed, tx); | |
3931 | |
3932 kmem_free(packed, nvsize); | |
3933 | |
3934 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
3935 dmu_buf_will_dirty(db, tx); | |
3936 *(uint64_t *)db->db_data = nvsize; | |
3937 dmu_buf_rele(db, FTAG); | |
3938 } | |
3939 | |
3940 static void | |
5450 | 3941 spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, |
3942 const char *config, const char *entry) | |
2082 | 3943 { |
3944 nvlist_t *nvroot; | |
5450 | 3945 nvlist_t **list; |
2082 | 3946 int i; |
3947 | |
5450 | 3948 if (!sav->sav_sync) |
2082 | 3949 return; |
3950 | |
3951 /* | |
5450 | 3952 * Update the MOS nvlist describing the list of available devices. |
3953 * spa_validate_aux() will have already made sure this nvlist is | |
4451 | 3954 * valid and the vdevs are labeled appropriately. |
2082 | 3955 */ |
5450 | 3956 if (sav->sav_object == 0) { |
3957 sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
3958 DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
3959 sizeof (uint64_t), tx); | |
2082 | 3960 VERIFY(zap_update(spa->spa_meta_objset, |
5450 | 3961 DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, |
3962 &sav->sav_object, tx) == 0); | |
2082 | 3963 } |
3964 | |
3965 VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
5450 | 3966 if (sav->sav_count == 0) { |
3967 VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
2082 | 3968 } else { |
5450 | 3969 list = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); |
3970 for (i = 0; i < sav->sav_count; i++) | |
3971 list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
3972 B_FALSE, B_FALSE, B_TRUE); | |
3973 VERIFY(nvlist_add_nvlist_array(nvroot, config, list, | |
3974 sav->sav_count) == 0); | |
3975 for (i = 0; i < sav->sav_count; i++) | |
3976 nvlist_free(list[i]); | |
3977 kmem_free(list, sav->sav_count * sizeof (void *)); | |
2082 | 3978 } |
3979 | |
5450 | 3980 spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); |
2926 | 3981 nvlist_free(nvroot); |
2082 | 3982 |
5450 | 3983 sav->sav_sync = B_FALSE; |
2082 | 3984 } |
3985 | |
3986 static void | |
789 | 3987 spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) |
3988 { | |
3989 nvlist_t *config; | |
3990 | |
3991 if (list_is_empty(&spa->spa_dirty_list)) | |
3992 return; | |
3993 | |
3994 config = spa_config_generate(spa, NULL, dmu_tx_get_txg(tx), B_FALSE); | |
3995 | |
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3996 if (spa->spa_config_syncing) |
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3997 nvlist_free(spa->spa_config_syncing); |
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3998 spa->spa_config_syncing = config; |
789 | 3999 |
2082 | 4000 spa_sync_nvlist(spa, spa->spa_config_object, config, tx); |
789 | 4001 } |
4002 | |
5094 | 4003 /* |
4004 * Set zpool properties. | |
4005 */ | |
3912 | 4006 static void |
4543 | 4007 spa_sync_props(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
3912 | 4008 { |
4009 spa_t *spa = arg1; | |
5094 | 4010 objset_t *mos = spa->spa_meta_objset; |
3912 | 4011 nvlist_t *nvp = arg2; |
5094 | 4012 nvpair_t *elem; |
4451 | 4013 uint64_t intval; |
5363 | 4014 char *strval, *slash; |
5094 | 4015 zpool_prop_t prop; |
4016 const char *propname; | |
4017 zprop_type_t proptype; | |
4018 | |
4019 elem = NULL; | |
4020 while ((elem = nvlist_next_nvpair(nvp, elem))) { | |
4021 switch (prop = zpool_name_to_prop(nvpair_name(elem))) { | |
4022 case ZPOOL_PROP_VERSION: | |
4023 /* | |
4024 * Only set version for non-zpool-creation cases | |
4025 * (set/import). spa_create() needs special care | |
4026 * for version setting. | |
4027 */ | |
4028 if (tx->tx_txg != TXG_INITIAL) { | |
4029 VERIFY(nvpair_value_uint64(elem, | |
4030 &intval) == 0); | |
4031 ASSERT(intval <= SPA_VERSION); | |
4032 ASSERT(intval >= spa_version(spa)); | |
4033 spa->spa_uberblock.ub_version = intval; | |
4034 vdev_config_dirty(spa->spa_root_vdev); | |
4035 } | |
4036 break; | |
4037 | |
4038 case ZPOOL_PROP_ALTROOT: | |
4039 /* | |
4040 * 'altroot' is a non-persistent property. It should | |
4041 * have been set temporarily at creation or import time. | |
4042 */ | |
4043 ASSERT(spa->spa_root != NULL); | |
4044 break; | |
4045 | |
5363 | 4046 case ZPOOL_PROP_CACHEFILE: |
5094 | 4047 /* |
5363 | 4048 * 'cachefile' is a non-persistent property, but note |
4049 * an async request that the config cache needs to be | |
4050 * udpated. | |
5094 | 4051 */ |
5363 | 4052 VERIFY(nvpair_value_string(elem, &strval) == 0); |
4053 if (spa->spa_config_dir) | |
4054 spa_strfree(spa->spa_config_dir); | |
4055 if (spa->spa_config_file) | |
4056 spa_strfree(spa->spa_config_file); | |
4057 | |
4058 if (strval[0] == '\0') { | |
4059 spa->spa_config_dir = NULL; | |
4060 spa->spa_config_file = NULL; | |
4061 } else if (strcmp(strval, "none") == 0) { | |
4062 spa->spa_config_dir = spa_strdup(strval); | |
4063 spa->spa_config_file = NULL; | |
4064 } else { | |
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4065 /* |
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4066 * If the cachefile is in the root directory, |
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4067 * we will end up with an empty string for |
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4068 * spa_config_dir. This value is only ever |
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4069 * used when concatenated with '/', so an empty |
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4070 * string still behaves correctly and keeps the |
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4071 * rest of the code simple. |
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4072 */ |
5363 | 4073 slash = strrchr(strval, '/'); |
4074 ASSERT(slash != NULL); | |
4075 *slash = '\0'; | |
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4076 if (strcmp(strval, spa_config_dir) == 0 && |
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4077 strcmp(slash + 1, ZPOOL_CACHE_FILE) == 0) { |
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4078 spa->spa_config_dir = NULL; |
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4079 spa->spa_config_file = NULL; |
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4080 } else { |
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4081 spa->spa_config_dir = |
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4082 spa_strdup(strval); |
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4083 spa->spa_config_file = |
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4084 spa_strdup(slash + 1); |
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4085 } |
5363 | 4086 } |
4087 spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
4543 | 4088 break; |
5094 | 4089 default: |
4090 /* | |
4091 * Set pool property values in the poolprops mos object. | |
4092 */ | |
4093 mutex_enter(&spa->spa_props_lock); | |
4094 if (spa->spa_pool_props_object == 0) { | |
4095 objset_t *mos = spa->spa_meta_objset; | |
4096 | |
4097 VERIFY((spa->spa_pool_props_object = | |
4098 zap_create(mos, DMU_OT_POOL_PROPS, | |
4099 DMU_OT_NONE, 0, tx)) > 0); | |
4100 | |
4101 VERIFY(zap_update(mos, | |
4102 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, | |
4103 8, 1, &spa->spa_pool_props_object, tx) | |
4104 == 0); | |
4105 } | |
4106 mutex_exit(&spa->spa_props_lock); | |
4107 | |
4108 /* normalize the property name */ | |
4109 propname = zpool_prop_to_name(prop); | |
4110 proptype = zpool_prop_get_type(prop); | |
4111 | |
4112 if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
4113 ASSERT(proptype == PROP_TYPE_STRING); | |
4114 VERIFY(nvpair_value_string(elem, &strval) == 0); | |
4115 VERIFY(zap_update(mos, | |
4116 spa->spa_pool_props_object, propname, | |
4117 1, strlen(strval) + 1, strval, tx) == 0); | |
4118 | |
4119 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { | |
4120 VERIFY(nvpair_value_uint64(elem, &intval) == 0); | |
4121 | |
4122 if (proptype == PROP_TYPE_INDEX) { | |
4123 const char *unused; | |
4124 VERIFY(zpool_prop_index_to_string( | |
4125 prop, intval, &unused) == 0); | |
4126 } | |
4127 VERIFY(zap_update(mos, | |
4128 spa->spa_pool_props_object, propname, | |
4129 8, 1, &intval, tx) == 0); | |
4130 } else { | |
4131 ASSERT(0); /* not allowed */ | |
4132 } | |
4133 | |
5329 | 4134 switch (prop) { |
4135 case ZPOOL_PROP_DELEGATION: | |
5094 | 4136 spa->spa_delegation = intval; |
5329 | 4137 break; |
4138 case ZPOOL_PROP_BOOTFS: | |
5094 | 4139 spa->spa_bootfs = intval; |
5329 | 4140 break; |
4141 case ZPOOL_PROP_FAILUREMODE: | |
4142 spa->spa_failmode = intval; | |
4143 break; | |
4144 default: | |
4145 break; | |
4146 } | |
3912 | 4147 } |
5094 | 4148 |
4149 /* log internal history if this is not a zpool create */ | |
4150 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY && | |
4151 tx->tx_txg != TXG_INITIAL) { | |
4152 spa_history_internal_log(LOG_POOL_PROPSET, | |
4153 spa, tx, cr, "%s %lld %s", | |
4154 nvpair_name(elem), intval, spa->spa_name); | |
4155 } | |
3912 | 4156 } |
4157 } | |
4158 | |
789 | 4159 /* |
4160 * Sync the specified transaction group. New blocks may be dirtied as | |
4161 * part of the process, so we iterate until it converges. | |
4162 */ | |
4163 void | |
4164 spa_sync(spa_t *spa, uint64_t txg) | |
4165 { | |
4166 dsl_pool_t *dp = spa->spa_dsl_pool; | |
4167 objset_t *mos = spa->spa_meta_objset; | |
4168 bplist_t *bpl = &spa->spa_sync_bplist; | |
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4169 vdev_t *rvd = spa->spa_root_vdev; |
789 | 4170 vdev_t *vd; |
4171 dmu_tx_t *tx; | |
4172 int dirty_vdevs; | |
4173 | |
4174 /* | |
4175 * Lock out configuration changes. | |
4176 */ | |
1544 | 4177 spa_config_enter(spa, RW_READER, FTAG); |
789 | 4178 |
4179 spa->spa_syncing_txg = txg; | |
4180 spa->spa_sync_pass = 0; | |
4181 | |
1544 | 4182 VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj)); |
789 | 4183 |
2082 | 4184 tx = dmu_tx_create_assigned(dp, txg); |
4185 | |
4186 /* | |
4577 | 4187 * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, |
2082 | 4188 * set spa_deflate if we have no raid-z vdevs. |
4189 */ | |
4577 | 4190 if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && |
4191 spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
2082 | 4192 int i; |
4193 | |
4194 for (i = 0; i < rvd->vdev_children; i++) { | |
4195 vd = rvd->vdev_child[i]; | |
4196 if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
4197 break; | |
4198 } | |
4199 if (i == rvd->vdev_children) { | |
4200 spa->spa_deflate = TRUE; | |
4201 VERIFY(0 == zap_add(spa->spa_meta_objset, | |
4202 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
4203 sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
4204 } | |
4205 } | |
4206 | |
789 | 4207 /* |
4208 * If anything has changed in this txg, push the deferred frees | |
4209 * from the previous txg. If not, leave them alone so that we | |
4210 * don't generate work on an otherwise idle system. | |
4211 */ | |
4212 if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
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4213 !txg_list_empty(&dp->dp_dirty_dirs, txg) || |
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4214 !txg_list_empty(&dp->dp_sync_tasks, txg)) |
789 | 4215 spa_sync_deferred_frees(spa, txg); |
4216 | |
4217 /* | |
4218 * Iterate to convergence. | |
4219 */ | |
4220 do { | |
4221 spa->spa_sync_pass++; | |
4222 | |
4223 spa_sync_config_object(spa, tx); | |
5450 | 4224 spa_sync_aux_dev(spa, &spa->spa_spares, tx, |
4225 ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
4226 spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
4227 ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
1544 | 4228 spa_errlog_sync(spa, txg); |
789 | 4229 dsl_pool_sync(dp, txg); |
4230 | |
4231 dirty_vdevs = 0; | |
4232 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) { | |
4233 vdev_sync(vd, txg); | |
4234 dirty_vdevs++; | |
4235 } | |
4236 | |
4237 bplist_sync(bpl, tx); | |
4238 } while (dirty_vdevs); | |
4239 | |
4240 bplist_close(bpl); | |
4241 | |
4242 dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass); | |
4243 | |
4244 /* | |
4245 * Rewrite the vdev configuration (which includes the uberblock) | |
4246 * to commit the transaction group. | |
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4247 * |
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4248 * If there are no dirty vdevs, we sync the uberblock to a few |
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4249 * random top-level vdevs that are known to be visible in the |
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4250 * config cache (see spa_vdev_add() for details). If there *are* |
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4251 * dirty vdevs -- or if the sync to our random subset fails -- |
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4252 * then sync the uberblock to all vdevs. |
789 | 4253 */ |
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4254 if (list_is_empty(&spa->spa_dirty_list)) { |
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4255 vdev_t *svd[SPA_DVAS_PER_BP]; |
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4256 int svdcount = 0; |
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4257 int children = rvd->vdev_children; |
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4258 int c0 = spa_get_random(children); |
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4259 int c; |
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4260 |
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4261 for (c = 0; c < children; c++) { |
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4262 vd = rvd->vdev_child[(c0 + c) % children]; |
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|
4263 if (vd->vdev_ms_array == 0 || vd->vdev_islog) |
1635
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4264 continue; |
5688
c0b02c8fd2c0
6640580 spa_get_random() is insanely slow in userland
bonwick
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5621
diff
changeset
|
4265 svd[svdcount++] = vd; |
c0b02c8fd2c0
6640580 spa_get_random() is insanely slow in userland
bonwick
parents:
5621
diff
changeset
|
4266 if (svdcount == SPA_DVAS_PER_BP) |
1635
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
bonwick
parents:
1601
diff
changeset
|
4267 break; |
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6398664 zpool detach: missing argument to error message causes core dump
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1601
diff
changeset
|
4268 } |
6615
333cfc13ec55
6616599 vdev_config_sync(rvd, txg) == 0, file: ../../common/fs/zfs/spa .c, line: 3537
gw25295
parents:
6423
diff
changeset
|
4269 vdev_config_sync(svd, svdcount, txg); |
333cfc13ec55
6616599 vdev_config_sync(rvd, txg) == 0, file: ../../common/fs/zfs/spa .c, line: 3537
gw25295
parents:
6423
diff
changeset
|
4270 } else { |
333cfc13ec55
6616599 vdev_config_sync(rvd, txg) == 0, file: ../../common/fs/zfs/spa .c, line: 3537
gw25295
parents:
6423
diff
changeset
|
4271 vdev_config_sync(rvd->vdev_child, rvd->vdev_children, txg); |
1635
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
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diff
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|
4272 } |
2082 | 4273 dmu_tx_commit(tx); |
4274 | |
1635
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4275 /* |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4276 * Clear the dirty config list. |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4277 */ |
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6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4278 while ((vd = list_head(&spa->spa_dirty_list)) != NULL) |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4279 vdev_config_clean(vd); |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4280 |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4281 /* |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
bonwick
parents:
1601
diff
changeset
|
4282 * Now that the new config has synced transactionally, |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
bonwick
parents:
1601
diff
changeset
|
4283 * let it become visible to the config cache. |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4284 */ |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4285 if (spa->spa_config_syncing != NULL) { |
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6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4286 spa_config_set(spa, spa->spa_config_syncing); |
0ab1193d47cb
6398664 zpool detach: missing argument to error message causes core dump
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parents:
1601
diff
changeset
|
4287 spa->spa_config_txg = txg; |
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6398664 zpool detach: missing argument to error message causes core dump
bonwick
parents:
1601
diff
changeset
|
4288 spa->spa_config_syncing = NULL; |
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6398664 zpool detach: missing argument to error message causes core dump
bonwick
parents:
1601
diff
changeset
|
4289 } |
789 | 4290 |
4291 /* | |
4292 * Make a stable copy of the fully synced uberblock. | |
4293 * We use this as the root for pool traversals. | |
4294 */ | |
4295 spa->spa_traverse_wanted = 1; /* tells traverse_more() to stop */ | |
4296 | |
4297 spa_scrub_suspend(spa); /* stop scrubbing and finish I/Os */ | |
4298 | |
4299 rw_enter(&spa->spa_traverse_lock, RW_WRITER); | |
4300 spa->spa_traverse_wanted = 0; | |
4301 spa->spa_ubsync = spa->spa_uberblock; | |
4302 rw_exit(&spa->spa_traverse_lock); | |
4303 | |
4304 spa_scrub_resume(spa); /* resume scrub with new ubsync */ | |
4305 | |
4306 /* | |
4307 * Clean up the ZIL records for the synced txg. | |
4308 */ | |
4309 dsl_pool_zil_clean(dp); | |
4310 | |
4311 /* | |
4312 * Update usable space statistics. | |
4313 */ | |
4314 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
4315 vdev_sync_done(vd, txg); | |
4316 | |
4317 /* | |
4318 * It had better be the case that we didn't dirty anything | |
2082 | 4319 * since vdev_config_sync(). |
789 | 4320 */ |
4321 ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
4322 ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
4323 ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
4324 ASSERT(bpl->bpl_queue == NULL); | |
4325 | |
1544 | 4326 spa_config_exit(spa, FTAG); |
4327 | |
4328 /* | |
4329 * If any async tasks have been requested, kick them off. | |
4330 */ | |
4331 spa_async_dispatch(spa); | |
789 | 4332 } |
4333 | |
4334 /* | |
4335 * Sync all pools. We don't want to hold the namespace lock across these | |
4336 * operations, so we take a reference on the spa_t and drop the lock during the | |
4337 * sync. | |
4338 */ | |
4339 void | |
4340 spa_sync_allpools(void) | |
4341 { | |
4342 spa_t *spa = NULL; | |
4343 mutex_enter(&spa_namespace_lock); | |
4344 while ((spa = spa_next(spa)) != NULL) { | |
4345 if (spa_state(spa) != POOL_STATE_ACTIVE) | |
4346 continue; | |
4347 spa_open_ref(spa, FTAG); | |
4348 mutex_exit(&spa_namespace_lock); | |
4349 txg_wait_synced(spa_get_dsl(spa), 0); | |
4350 mutex_enter(&spa_namespace_lock); | |
4351 spa_close(spa, FTAG); | |
4352 } | |
4353 mutex_exit(&spa_namespace_lock); | |
4354 } | |
4355 | |
4356 /* | |
4357 * ========================================================================== | |
4358 * Miscellaneous routines | |
4359 * ========================================================================== | |
4360 */ | |
4361 | |
4362 /* | |
4363 * Remove all pools in the system. | |
4364 */ | |
4365 void | |
4366 spa_evict_all(void) | |
4367 { | |
4368 spa_t *spa; | |
4369 | |
4370 /* | |
4371 * Remove all cached state. All pools should be closed now, | |
4372 * so every spa in the AVL tree should be unreferenced. | |
4373 */ | |
4374 mutex_enter(&spa_namespace_lock); | |
4375 while ((spa = spa_next(NULL)) != NULL) { | |
4376 /* | |
1544 | 4377 * Stop async tasks. The async thread may need to detach |
4378 * a device that's been replaced, which requires grabbing | |
4379 * spa_namespace_lock, so we must drop it here. | |
789 | 4380 */ |
4381 spa_open_ref(spa, FTAG); | |
4382 mutex_exit(&spa_namespace_lock); | |
1544 | 4383 spa_async_suspend(spa); |
4808 | 4384 mutex_enter(&spa_namespace_lock); |
789 | 4385 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); |
4386 spa_close(spa, FTAG); | |
4387 | |
4388 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
4389 spa_unload(spa); | |
4390 spa_deactivate(spa); | |
4391 } | |
4392 spa_remove(spa); | |
4393 } | |
4394 mutex_exit(&spa_namespace_lock); | |
4395 } | |
1544 | 4396 |
4397 vdev_t * | |
4398 spa_lookup_by_guid(spa_t *spa, uint64_t guid) | |
4399 { | |
4400 return (vdev_lookup_by_guid(spa->spa_root_vdev, guid)); | |
4401 } | |
1760 | 4402 |
4403 void | |
5094 | 4404 spa_upgrade(spa_t *spa, uint64_t version) |
1760 | 4405 { |
4406 spa_config_enter(spa, RW_WRITER, FTAG); | |
4407 | |
4408 /* | |
4409 * This should only be called for a non-faulted pool, and since a | |
4410 * future version would result in an unopenable pool, this shouldn't be | |
4411 * possible. | |
4412 */ | |
4577 | 4413 ASSERT(spa->spa_uberblock.ub_version <= SPA_VERSION); |
5094 | 4414 ASSERT(version >= spa->spa_uberblock.ub_version); |
4415 | |
4416 spa->spa_uberblock.ub_version = version; | |
1760 | 4417 vdev_config_dirty(spa->spa_root_vdev); |
4418 | |
4419 spa_config_exit(spa, FTAG); | |
2082 | 4420 |
4421 txg_wait_synced(spa_get_dsl(spa), 0); | |
1760 | 4422 } |
2082 | 4423 |
4424 boolean_t | |
4425 spa_has_spare(spa_t *spa, uint64_t guid) | |
4426 { | |
4427 int i; | |
3377
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
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3290
diff
changeset
|
4428 uint64_t spareguid; |
5450 | 4429 spa_aux_vdev_t *sav = &spa->spa_spares; |
4430 | |
4431 for (i = 0; i < sav->sav_count; i++) | |
4432 if (sav->sav_vdevs[i]->vdev_guid == guid) | |
2082 | 4433 return (B_TRUE); |
4434 | |
5450 | 4435 for (i = 0; i < sav->sav_npending; i++) { |
4436 if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
4437 &spareguid) == 0 && spareguid == guid) | |
3377
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
parents:
3290
diff
changeset
|
4438 return (B_TRUE); |
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
parents:
3290
diff
changeset
|
4439 } |
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
parents:
3290
diff
changeset
|
4440 |
2082 | 4441 return (B_FALSE); |
4442 } | |
3912 | 4443 |
4451 | 4444 /* |
4445 * Post a sysevent corresponding to the given event. The 'name' must be one of | |
4446 * the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
4447 * filled in from the spa and (optionally) the vdev. This doesn't do anything | |
4448 * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
4449 * or zdb as real changes. | |
4450 */ | |
4451 void | |
4452 spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
4453 { | |
4454 #ifdef _KERNEL | |
4455 sysevent_t *ev; | |
4456 sysevent_attr_list_t *attr = NULL; | |
4457 sysevent_value_t value; | |
4458 sysevent_id_t eid; | |
4459 | |
4460 ev = sysevent_alloc(EC_ZFS, (char *)name, SUNW_KERN_PUB "zfs", | |
4461 SE_SLEEP); | |
4462 | |
4463 value.value_type = SE_DATA_TYPE_STRING; | |
4464 value.value.sv_string = spa_name(spa); | |
4465 if (sysevent_add_attr(&attr, ZFS_EV_POOL_NAME, &value, SE_SLEEP) != 0) | |
4466 goto done; | |
4467 | |
4468 value.value_type = SE_DATA_TYPE_UINT64; | |
4469 value.value.sv_uint64 = spa_guid(spa); | |
4470 if (sysevent_add_attr(&attr, ZFS_EV_POOL_GUID, &value, SE_SLEEP) != 0) | |
4471 goto done; | |
4472 | |
4473 if (vd) { | |
4474 value.value_type = SE_DATA_TYPE_UINT64; | |
4475 value.value.sv_uint64 = vd->vdev_guid; | |
4476 if (sysevent_add_attr(&attr, ZFS_EV_VDEV_GUID, &value, | |
4477 SE_SLEEP) != 0) | |
4478 goto done; | |
4479 | |
4480 if (vd->vdev_path) { | |
4481 value.value_type = SE_DATA_TYPE_STRING; | |
4482 value.value.sv_string = vd->vdev_path; | |
4483 if (sysevent_add_attr(&attr, ZFS_EV_VDEV_PATH, | |
4484 &value, SE_SLEEP) != 0) | |
4485 goto done; | |
4486 } | |
4487 } | |
4488 | |
5756
05eb4c1ff492
6585441 spa_event_notify() doesn't pass its attributes
eschrock
parents:
5688
diff
changeset
|
4489 if (sysevent_attach_attributes(ev, attr) != 0) |
05eb4c1ff492
6585441 spa_event_notify() doesn't pass its attributes
eschrock
parents:
5688
diff
changeset
|
4490 goto done; |
05eb4c1ff492
6585441 spa_event_notify() doesn't pass its attributes
eschrock
parents:
5688
diff
changeset
|
4491 attr = NULL; |
05eb4c1ff492
6585441 spa_event_notify() doesn't pass its attributes
eschrock
parents:
5688
diff
changeset
|
4492 |
4451 | 4493 (void) log_sysevent(ev, SE_SLEEP, &eid); |
4494 | |
4495 done: | |
4496 if (attr) | |
4497 sysevent_free_attr(attr); | |
4498 sysevent_free(ev); | |
4499 #endif | |
4500 } |