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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
428870ff | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
34dc7c2f BB |
26 | /* |
27 | * This file contains all the routines used when modifying on-disk SPA state. | |
28 | * This includes opening, importing, destroying, exporting a pool, and syncing a | |
29 | * pool. | |
30 | */ | |
31 | ||
32 | #include <sys/zfs_context.h> | |
33 | #include <sys/fm/fs/zfs.h> | |
34 | #include <sys/spa_impl.h> | |
35 | #include <sys/zio.h> | |
36 | #include <sys/zio_checksum.h> | |
34dc7c2f BB |
37 | #include <sys/dmu.h> |
38 | #include <sys/dmu_tx.h> | |
39 | #include <sys/zap.h> | |
40 | #include <sys/zil.h> | |
428870ff | 41 | #include <sys/ddt.h> |
34dc7c2f BB |
42 | #include <sys/vdev_impl.h> |
43 | #include <sys/metaslab.h> | |
428870ff | 44 | #include <sys/metaslab_impl.h> |
34dc7c2f BB |
45 | #include <sys/uberblock_impl.h> |
46 | #include <sys/txg.h> | |
47 | #include <sys/avl.h> | |
48 | #include <sys/dmu_traverse.h> | |
49 | #include <sys/dmu_objset.h> | |
50 | #include <sys/unique.h> | |
51 | #include <sys/dsl_pool.h> | |
52 | #include <sys/dsl_dataset.h> | |
53 | #include <sys/dsl_dir.h> | |
54 | #include <sys/dsl_prop.h> | |
55 | #include <sys/dsl_synctask.h> | |
56 | #include <sys/fs/zfs.h> | |
57 | #include <sys/arc.h> | |
58 | #include <sys/callb.h> | |
59 | #include <sys/systeminfo.h> | |
34dc7c2f | 60 | #include <sys/spa_boot.h> |
9babb374 | 61 | #include <sys/zfs_ioctl.h> |
428870ff | 62 | #include <sys/dsl_scan.h> |
34dc7c2f | 63 | |
d164b209 | 64 | #ifdef _KERNEL |
428870ff BB |
65 | #include <sys/bootprops.h> |
66 | #include <sys/callb.h> | |
67 | #include <sys/cpupart.h> | |
68 | #include <sys/pool.h> | |
69 | #include <sys/sysdc.h> | |
d164b209 BB |
70 | #include <sys/zone.h> |
71 | #endif /* _KERNEL */ | |
72 | ||
34dc7c2f BB |
73 | #include "zfs_prop.h" |
74 | #include "zfs_comutil.h" | |
75 | ||
428870ff | 76 | typedef enum zti_modes { |
9babb374 BB |
77 | zti_mode_fixed, /* value is # of threads (min 1) */ |
78 | zti_mode_online_percent, /* value is % of online CPUs */ | |
428870ff BB |
79 | zti_mode_batch, /* cpu-intensive; value is ignored */ |
80 | zti_mode_null, /* don't create a taskq */ | |
9babb374 | 81 | zti_nmodes |
428870ff | 82 | } zti_modes_t; |
34dc7c2f | 83 | |
428870ff BB |
84 | #define ZTI_FIX(n) { zti_mode_fixed, (n) } |
85 | #define ZTI_PCT(n) { zti_mode_online_percent, (n) } | |
86 | #define ZTI_BATCH { zti_mode_batch, 0 } | |
87 | #define ZTI_NULL { zti_mode_null, 0 } | |
9babb374 | 88 | |
428870ff | 89 | #define ZTI_ONE ZTI_FIX(1) |
9babb374 BB |
90 | |
91 | typedef struct zio_taskq_info { | |
428870ff BB |
92 | enum zti_modes zti_mode; |
93 | uint_t zti_value; | |
9babb374 BB |
94 | } zio_taskq_info_t; |
95 | ||
96 | static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = { | |
428870ff | 97 | "issue", "issue_high", "intr", "intr_high" |
9babb374 BB |
98 | }; |
99 | ||
428870ff BB |
100 | /* |
101 | * Define the taskq threads for the following I/O types: | |
102 | * NULL, READ, WRITE, FREE, CLAIM, and IOCTL | |
103 | */ | |
104 | const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = { | |
105 | /* ISSUE ISSUE_HIGH INTR INTR_HIGH */ | |
106 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, | |
107 | { ZTI_FIX(8), ZTI_NULL, ZTI_BATCH, ZTI_NULL }, | |
108 | { ZTI_BATCH, ZTI_FIX(5), ZTI_FIX(8), ZTI_FIX(5) }, | |
109 | { ZTI_FIX(100), ZTI_NULL, ZTI_ONE, ZTI_NULL }, | |
110 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, | |
111 | { ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, | |
9babb374 BB |
112 | }; |
113 | ||
428870ff | 114 | static dsl_syncfunc_t spa_sync_props; |
b128c09f | 115 | static boolean_t spa_has_active_shared_spare(spa_t *spa); |
428870ff BB |
116 | static int spa_load_impl(spa_t *spa, uint64_t, nvlist_t *config, |
117 | spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, | |
118 | char **ereport); | |
119 | ||
120 | uint_t zio_taskq_batch_pct = 100; /* 1 thread per cpu in pset */ | |
121 | id_t zio_taskq_psrset_bind = PS_NONE; | |
122 | boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */ | |
123 | uint_t zio_taskq_basedc = 80; /* base duty cycle */ | |
124 | ||
125 | boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */ | |
126 | ||
127 | /* | |
128 | * This (illegal) pool name is used when temporarily importing a spa_t in order | |
129 | * to get the vdev stats associated with the imported devices. | |
130 | */ | |
131 | #define TRYIMPORT_NAME "$import" | |
34dc7c2f BB |
132 | |
133 | /* | |
134 | * ========================================================================== | |
135 | * SPA properties routines | |
136 | * ========================================================================== | |
137 | */ | |
138 | ||
139 | /* | |
140 | * Add a (source=src, propname=propval) list to an nvlist. | |
141 | */ | |
142 | static void | |
143 | spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval, | |
144 | uint64_t intval, zprop_source_t src) | |
145 | { | |
146 | const char *propname = zpool_prop_to_name(prop); | |
147 | nvlist_t *propval; | |
148 | ||
149 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
150 | VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0); | |
151 | ||
152 | if (strval != NULL) | |
153 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0); | |
154 | else | |
155 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0); | |
156 | ||
157 | VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0); | |
158 | nvlist_free(propval); | |
159 | } | |
160 | ||
161 | /* | |
162 | * Get property values from the spa configuration. | |
163 | */ | |
164 | static void | |
165 | spa_prop_get_config(spa_t *spa, nvlist_t **nvp) | |
166 | { | |
d164b209 | 167 | uint64_t size; |
428870ff | 168 | uint64_t alloc; |
34dc7c2f BB |
169 | uint64_t cap, version; |
170 | zprop_source_t src = ZPROP_SRC_NONE; | |
b128c09f BB |
171 | spa_config_dirent_t *dp; |
172 | ||
173 | ASSERT(MUTEX_HELD(&spa->spa_props_lock)); | |
34dc7c2f | 174 | |
d164b209 | 175 | if (spa->spa_root_vdev != NULL) { |
428870ff BB |
176 | alloc = metaslab_class_get_alloc(spa_normal_class(spa)); |
177 | size = metaslab_class_get_space(spa_normal_class(spa)); | |
d164b209 BB |
178 | spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src); |
179 | spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src); | |
428870ff BB |
180 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src); |
181 | spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL, | |
182 | size - alloc, src); | |
d164b209 | 183 | |
428870ff | 184 | cap = (size == 0) ? 0 : (alloc * 100 / size); |
d164b209 BB |
185 | spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src); |
186 | ||
428870ff BB |
187 | spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL, |
188 | ddt_get_pool_dedup_ratio(spa), src); | |
189 | ||
d164b209 BB |
190 | spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL, |
191 | spa->spa_root_vdev->vdev_state, src); | |
192 | ||
193 | version = spa_version(spa); | |
194 | if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) | |
195 | src = ZPROP_SRC_DEFAULT; | |
196 | else | |
197 | src = ZPROP_SRC_LOCAL; | |
198 | spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL, version, src); | |
199 | } | |
34dc7c2f BB |
200 | |
201 | spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src); | |
34dc7c2f BB |
202 | |
203 | if (spa->spa_root != NULL) | |
204 | spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root, | |
205 | 0, ZPROP_SRC_LOCAL); | |
206 | ||
b128c09f BB |
207 | if ((dp = list_head(&spa->spa_config_list)) != NULL) { |
208 | if (dp->scd_path == NULL) { | |
34dc7c2f | 209 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f BB |
210 | "none", 0, ZPROP_SRC_LOCAL); |
211 | } else if (strcmp(dp->scd_path, spa_config_path) != 0) { | |
34dc7c2f | 212 | spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE, |
b128c09f | 213 | dp->scd_path, 0, ZPROP_SRC_LOCAL); |
34dc7c2f BB |
214 | } |
215 | } | |
216 | } | |
217 | ||
218 | /* | |
219 | * Get zpool property values. | |
220 | */ | |
221 | int | |
222 | spa_prop_get(spa_t *spa, nvlist_t **nvp) | |
223 | { | |
428870ff | 224 | objset_t *mos = spa->spa_meta_objset; |
34dc7c2f BB |
225 | zap_cursor_t zc; |
226 | zap_attribute_t za; | |
34dc7c2f BB |
227 | int err; |
228 | ||
229 | VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
230 | ||
b128c09f BB |
231 | mutex_enter(&spa->spa_props_lock); |
232 | ||
34dc7c2f BB |
233 | /* |
234 | * Get properties from the spa config. | |
235 | */ | |
236 | spa_prop_get_config(spa, nvp); | |
237 | ||
34dc7c2f | 238 | /* If no pool property object, no more prop to get. */ |
428870ff | 239 | if (mos == NULL || spa->spa_pool_props_object == 0) { |
34dc7c2f BB |
240 | mutex_exit(&spa->spa_props_lock); |
241 | return (0); | |
242 | } | |
243 | ||
244 | /* | |
245 | * Get properties from the MOS pool property object. | |
246 | */ | |
247 | for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
248 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
249 | zap_cursor_advance(&zc)) { | |
250 | uint64_t intval = 0; | |
251 | char *strval = NULL; | |
252 | zprop_source_t src = ZPROP_SRC_DEFAULT; | |
253 | zpool_prop_t prop; | |
254 | ||
255 | if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL) | |
256 | continue; | |
257 | ||
258 | switch (za.za_integer_length) { | |
259 | case 8: | |
260 | /* integer property */ | |
261 | if (za.za_first_integer != | |
262 | zpool_prop_default_numeric(prop)) | |
263 | src = ZPROP_SRC_LOCAL; | |
264 | ||
265 | if (prop == ZPOOL_PROP_BOOTFS) { | |
266 | dsl_pool_t *dp; | |
267 | dsl_dataset_t *ds = NULL; | |
268 | ||
269 | dp = spa_get_dsl(spa); | |
270 | rw_enter(&dp->dp_config_rwlock, RW_READER); | |
b128c09f BB |
271 | if (err = dsl_dataset_hold_obj(dp, |
272 | za.za_first_integer, FTAG, &ds)) { | |
34dc7c2f BB |
273 | rw_exit(&dp->dp_config_rwlock); |
274 | break; | |
275 | } | |
276 | ||
277 | strval = kmem_alloc( | |
278 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, | |
279 | KM_SLEEP); | |
280 | dsl_dataset_name(ds, strval); | |
b128c09f | 281 | dsl_dataset_rele(ds, FTAG); |
34dc7c2f BB |
282 | rw_exit(&dp->dp_config_rwlock); |
283 | } else { | |
284 | strval = NULL; | |
285 | intval = za.za_first_integer; | |
286 | } | |
287 | ||
288 | spa_prop_add_list(*nvp, prop, strval, intval, src); | |
289 | ||
290 | if (strval != NULL) | |
291 | kmem_free(strval, | |
292 | MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); | |
293 | ||
294 | break; | |
295 | ||
296 | case 1: | |
297 | /* string property */ | |
298 | strval = kmem_alloc(za.za_num_integers, KM_SLEEP); | |
299 | err = zap_lookup(mos, spa->spa_pool_props_object, | |
300 | za.za_name, 1, za.za_num_integers, strval); | |
301 | if (err) { | |
302 | kmem_free(strval, za.za_num_integers); | |
303 | break; | |
304 | } | |
305 | spa_prop_add_list(*nvp, prop, strval, 0, src); | |
306 | kmem_free(strval, za.za_num_integers); | |
307 | break; | |
308 | ||
309 | default: | |
310 | break; | |
311 | } | |
312 | } | |
313 | zap_cursor_fini(&zc); | |
314 | mutex_exit(&spa->spa_props_lock); | |
315 | out: | |
316 | if (err && err != ENOENT) { | |
317 | nvlist_free(*nvp); | |
318 | *nvp = NULL; | |
319 | return (err); | |
320 | } | |
321 | ||
322 | return (0); | |
323 | } | |
324 | ||
325 | /* | |
326 | * Validate the given pool properties nvlist and modify the list | |
327 | * for the property values to be set. | |
328 | */ | |
329 | static int | |
330 | spa_prop_validate(spa_t *spa, nvlist_t *props) | |
331 | { | |
332 | nvpair_t *elem; | |
333 | int error = 0, reset_bootfs = 0; | |
334 | uint64_t objnum; | |
335 | ||
336 | elem = NULL; | |
337 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
338 | zpool_prop_t prop; | |
339 | char *propname, *strval; | |
340 | uint64_t intval; | |
34dc7c2f BB |
341 | objset_t *os; |
342 | char *slash; | |
343 | ||
344 | propname = nvpair_name(elem); | |
345 | ||
346 | if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL) | |
347 | return (EINVAL); | |
348 | ||
349 | switch (prop) { | |
350 | case ZPOOL_PROP_VERSION: | |
351 | error = nvpair_value_uint64(elem, &intval); | |
352 | if (!error && | |
353 | (intval < spa_version(spa) || intval > SPA_VERSION)) | |
354 | error = EINVAL; | |
355 | break; | |
356 | ||
357 | case ZPOOL_PROP_DELEGATION: | |
358 | case ZPOOL_PROP_AUTOREPLACE: | |
b128c09f | 359 | case ZPOOL_PROP_LISTSNAPS: |
9babb374 | 360 | case ZPOOL_PROP_AUTOEXPAND: |
34dc7c2f BB |
361 | error = nvpair_value_uint64(elem, &intval); |
362 | if (!error && intval > 1) | |
363 | error = EINVAL; | |
364 | break; | |
365 | ||
366 | case ZPOOL_PROP_BOOTFS: | |
9babb374 BB |
367 | /* |
368 | * If the pool version is less than SPA_VERSION_BOOTFS, | |
369 | * or the pool is still being created (version == 0), | |
370 | * the bootfs property cannot be set. | |
371 | */ | |
34dc7c2f BB |
372 | if (spa_version(spa) < SPA_VERSION_BOOTFS) { |
373 | error = ENOTSUP; | |
374 | break; | |
375 | } | |
376 | ||
377 | /* | |
b128c09f | 378 | * Make sure the vdev config is bootable |
34dc7c2f | 379 | */ |
b128c09f | 380 | if (!vdev_is_bootable(spa->spa_root_vdev)) { |
34dc7c2f BB |
381 | error = ENOTSUP; |
382 | break; | |
383 | } | |
384 | ||
385 | reset_bootfs = 1; | |
386 | ||
387 | error = nvpair_value_string(elem, &strval); | |
388 | ||
389 | if (!error) { | |
b128c09f BB |
390 | uint64_t compress; |
391 | ||
34dc7c2f BB |
392 | if (strval == NULL || strval[0] == '\0') { |
393 | objnum = zpool_prop_default_numeric( | |
394 | ZPOOL_PROP_BOOTFS); | |
395 | break; | |
396 | } | |
397 | ||
428870ff | 398 | if (error = dmu_objset_hold(strval, FTAG, &os)) |
34dc7c2f | 399 | break; |
b128c09f | 400 | |
428870ff BB |
401 | /* Must be ZPL and not gzip compressed. */ |
402 | ||
403 | if (dmu_objset_type(os) != DMU_OST_ZFS) { | |
404 | error = ENOTSUP; | |
405 | } else if ((error = dsl_prop_get_integer(strval, | |
b128c09f BB |
406 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), |
407 | &compress, NULL)) == 0 && | |
408 | !BOOTFS_COMPRESS_VALID(compress)) { | |
409 | error = ENOTSUP; | |
410 | } else { | |
411 | objnum = dmu_objset_id(os); | |
412 | } | |
428870ff | 413 | dmu_objset_rele(os, FTAG); |
34dc7c2f BB |
414 | } |
415 | break; | |
b128c09f | 416 | |
34dc7c2f BB |
417 | case ZPOOL_PROP_FAILUREMODE: |
418 | error = nvpair_value_uint64(elem, &intval); | |
419 | if (!error && (intval < ZIO_FAILURE_MODE_WAIT || | |
420 | intval > ZIO_FAILURE_MODE_PANIC)) | |
421 | error = EINVAL; | |
422 | ||
423 | /* | |
424 | * This is a special case which only occurs when | |
425 | * the pool has completely failed. This allows | |
426 | * the user to change the in-core failmode property | |
427 | * without syncing it out to disk (I/Os might | |
428 | * currently be blocked). We do this by returning | |
429 | * EIO to the caller (spa_prop_set) to trick it | |
430 | * into thinking we encountered a property validation | |
431 | * error. | |
432 | */ | |
b128c09f | 433 | if (!error && spa_suspended(spa)) { |
34dc7c2f BB |
434 | spa->spa_failmode = intval; |
435 | error = EIO; | |
436 | } | |
437 | break; | |
438 | ||
439 | case ZPOOL_PROP_CACHEFILE: | |
440 | if ((error = nvpair_value_string(elem, &strval)) != 0) | |
441 | break; | |
442 | ||
443 | if (strval[0] == '\0') | |
444 | break; | |
445 | ||
446 | if (strcmp(strval, "none") == 0) | |
447 | break; | |
448 | ||
449 | if (strval[0] != '/') { | |
450 | error = EINVAL; | |
451 | break; | |
452 | } | |
453 | ||
454 | slash = strrchr(strval, '/'); | |
455 | ASSERT(slash != NULL); | |
456 | ||
457 | if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || | |
458 | strcmp(slash, "/..") == 0) | |
459 | error = EINVAL; | |
460 | break; | |
428870ff BB |
461 | |
462 | case ZPOOL_PROP_DEDUPDITTO: | |
463 | if (spa_version(spa) < SPA_VERSION_DEDUP) | |
464 | error = ENOTSUP; | |
465 | else | |
466 | error = nvpair_value_uint64(elem, &intval); | |
467 | if (error == 0 && | |
468 | intval != 0 && intval < ZIO_DEDUPDITTO_MIN) | |
469 | error = EINVAL; | |
470 | break; | |
34dc7c2f BB |
471 | } |
472 | ||
473 | if (error) | |
474 | break; | |
475 | } | |
476 | ||
477 | if (!error && reset_bootfs) { | |
478 | error = nvlist_remove(props, | |
479 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING); | |
480 | ||
481 | if (!error) { | |
482 | error = nvlist_add_uint64(props, | |
483 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum); | |
484 | } | |
485 | } | |
486 | ||
487 | return (error); | |
488 | } | |
489 | ||
d164b209 BB |
490 | void |
491 | spa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync) | |
492 | { | |
493 | char *cachefile; | |
494 | spa_config_dirent_t *dp; | |
495 | ||
496 | if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), | |
497 | &cachefile) != 0) | |
498 | return; | |
499 | ||
500 | dp = kmem_alloc(sizeof (spa_config_dirent_t), | |
501 | KM_SLEEP); | |
502 | ||
503 | if (cachefile[0] == '\0') | |
504 | dp->scd_path = spa_strdup(spa_config_path); | |
505 | else if (strcmp(cachefile, "none") == 0) | |
506 | dp->scd_path = NULL; | |
507 | else | |
508 | dp->scd_path = spa_strdup(cachefile); | |
509 | ||
510 | list_insert_head(&spa->spa_config_list, dp); | |
511 | if (need_sync) | |
512 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
513 | } | |
514 | ||
34dc7c2f BB |
515 | int |
516 | spa_prop_set(spa_t *spa, nvlist_t *nvp) | |
517 | { | |
518 | int error; | |
d164b209 BB |
519 | nvpair_t *elem; |
520 | boolean_t need_sync = B_FALSE; | |
521 | zpool_prop_t prop; | |
34dc7c2f BB |
522 | |
523 | if ((error = spa_prop_validate(spa, nvp)) != 0) | |
524 | return (error); | |
525 | ||
d164b209 BB |
526 | elem = NULL; |
527 | while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) { | |
528 | if ((prop = zpool_name_to_prop( | |
529 | nvpair_name(elem))) == ZPROP_INVAL) | |
530 | return (EINVAL); | |
531 | ||
532 | if (prop == ZPOOL_PROP_CACHEFILE || prop == ZPOOL_PROP_ALTROOT) | |
533 | continue; | |
534 | ||
535 | need_sync = B_TRUE; | |
536 | break; | |
537 | } | |
538 | ||
539 | if (need_sync) | |
540 | return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props, | |
541 | spa, nvp, 3)); | |
542 | else | |
543 | return (0); | |
34dc7c2f BB |
544 | } |
545 | ||
546 | /* | |
547 | * If the bootfs property value is dsobj, clear it. | |
548 | */ | |
549 | void | |
550 | spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
551 | { | |
552 | if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
553 | VERIFY(zap_remove(spa->spa_meta_objset, | |
554 | spa->spa_pool_props_object, | |
555 | zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); | |
556 | spa->spa_bootfs = 0; | |
557 | } | |
558 | } | |
559 | ||
560 | /* | |
561 | * ========================================================================== | |
562 | * SPA state manipulation (open/create/destroy/import/export) | |
563 | * ========================================================================== | |
564 | */ | |
565 | ||
566 | static int | |
567 | spa_error_entry_compare(const void *a, const void *b) | |
568 | { | |
569 | spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
570 | spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
571 | int ret; | |
572 | ||
573 | ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
574 | sizeof (zbookmark_t)); | |
575 | ||
576 | if (ret < 0) | |
577 | return (-1); | |
578 | else if (ret > 0) | |
579 | return (1); | |
580 | else | |
581 | return (0); | |
582 | } | |
583 | ||
584 | /* | |
585 | * Utility function which retrieves copies of the current logs and | |
586 | * re-initializes them in the process. | |
587 | */ | |
588 | void | |
589 | spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
590 | { | |
591 | ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
592 | ||
593 | bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
594 | bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
595 | ||
596 | avl_create(&spa->spa_errlist_scrub, | |
597 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
598 | offsetof(spa_error_entry_t, se_avl)); | |
599 | avl_create(&spa->spa_errlist_last, | |
600 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
601 | offsetof(spa_error_entry_t, se_avl)); | |
602 | } | |
603 | ||
428870ff BB |
604 | static taskq_t * |
605 | spa_taskq_create(spa_t *spa, const char *name, enum zti_modes mode, | |
606 | uint_t value) | |
34dc7c2f | 607 | { |
428870ff BB |
608 | uint_t flags = TASKQ_PREPOPULATE; |
609 | boolean_t batch = B_FALSE; | |
34dc7c2f | 610 | |
428870ff BB |
611 | switch (mode) { |
612 | case zti_mode_null: | |
613 | return (NULL); /* no taskq needed */ | |
614 | ||
615 | case zti_mode_fixed: | |
616 | ASSERT3U(value, >=, 1); | |
617 | value = MAX(value, 1); | |
618 | break; | |
619 | ||
620 | case zti_mode_batch: | |
621 | batch = B_TRUE; | |
622 | flags |= TASKQ_THREADS_CPU_PCT; | |
623 | value = zio_taskq_batch_pct; | |
624 | break; | |
625 | ||
626 | case zti_mode_online_percent: | |
627 | flags |= TASKQ_THREADS_CPU_PCT; | |
628 | break; | |
629 | ||
630 | default: | |
631 | panic("unrecognized mode for %s taskq (%u:%u) in " | |
632 | "spa_activate()", | |
633 | name, mode, value); | |
634 | break; | |
635 | } | |
34dc7c2f | 636 | |
428870ff BB |
637 | if (zio_taskq_sysdc && spa->spa_proc != &p0) { |
638 | if (batch) | |
639 | flags |= TASKQ_DC_BATCH; | |
34dc7c2f | 640 | |
428870ff BB |
641 | return (taskq_create_sysdc(name, value, 50, INT_MAX, |
642 | spa->spa_proc, zio_taskq_basedc, flags)); | |
643 | } | |
644 | return (taskq_create_proc(name, value, maxclsyspri, 50, INT_MAX, | |
645 | spa->spa_proc, flags)); | |
646 | } | |
647 | ||
648 | static void | |
649 | spa_create_zio_taskqs(spa_t *spa) | |
650 | { | |
b128c09f BB |
651 | for (int t = 0; t < ZIO_TYPES; t++) { |
652 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
428870ff BB |
653 | const zio_taskq_info_t *ztip = &zio_taskqs[t][q]; |
654 | enum zti_modes mode = ztip->zti_mode; | |
655 | uint_t value = ztip->zti_value; | |
9babb374 BB |
656 | char name[32]; |
657 | ||
658 | (void) snprintf(name, sizeof (name), | |
428870ff | 659 | "%s_%s", zio_type_name[t], zio_taskq_types[q]); |
9babb374 | 660 | |
428870ff BB |
661 | spa->spa_zio_taskq[t][q] = |
662 | spa_taskq_create(spa, name, mode, value); | |
663 | } | |
664 | } | |
665 | } | |
9babb374 | 666 | |
428870ff BB |
667 | #ifdef _KERNEL |
668 | static void | |
669 | spa_thread(void *arg) | |
670 | { | |
671 | callb_cpr_t cprinfo; | |
9babb374 | 672 | |
428870ff BB |
673 | spa_t *spa = arg; |
674 | user_t *pu = PTOU(curproc); | |
9babb374 | 675 | |
428870ff BB |
676 | CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr, |
677 | spa->spa_name); | |
9babb374 | 678 | |
428870ff BB |
679 | ASSERT(curproc != &p0); |
680 | (void) snprintf(pu->u_psargs, sizeof (pu->u_psargs), | |
681 | "zpool-%s", spa->spa_name); | |
682 | (void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm)); | |
683 | ||
684 | /* bind this thread to the requested psrset */ | |
685 | if (zio_taskq_psrset_bind != PS_NONE) { | |
686 | pool_lock(); | |
687 | mutex_enter(&cpu_lock); | |
688 | mutex_enter(&pidlock); | |
689 | mutex_enter(&curproc->p_lock); | |
690 | ||
691 | if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind, | |
692 | 0, NULL, NULL) == 0) { | |
693 | curthread->t_bind_pset = zio_taskq_psrset_bind; | |
694 | } else { | |
695 | cmn_err(CE_WARN, | |
696 | "Couldn't bind process for zfs pool \"%s\" to " | |
697 | "pset %d\n", spa->spa_name, zio_taskq_psrset_bind); | |
698 | } | |
699 | ||
700 | mutex_exit(&curproc->p_lock); | |
701 | mutex_exit(&pidlock); | |
702 | mutex_exit(&cpu_lock); | |
703 | pool_unlock(); | |
704 | } | |
705 | ||
706 | if (zio_taskq_sysdc) { | |
707 | sysdc_thread_enter(curthread, 100, 0); | |
708 | } | |
709 | ||
710 | spa->spa_proc = curproc; | |
711 | spa->spa_did = curthread->t_did; | |
712 | ||
713 | spa_create_zio_taskqs(spa); | |
714 | ||
715 | mutex_enter(&spa->spa_proc_lock); | |
716 | ASSERT(spa->spa_proc_state == SPA_PROC_CREATED); | |
717 | ||
718 | spa->spa_proc_state = SPA_PROC_ACTIVE; | |
719 | cv_broadcast(&spa->spa_proc_cv); | |
720 | ||
721 | CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
722 | while (spa->spa_proc_state == SPA_PROC_ACTIVE) | |
723 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
724 | CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock); | |
725 | ||
726 | ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE); | |
727 | spa->spa_proc_state = SPA_PROC_GONE; | |
728 | spa->spa_proc = &p0; | |
729 | cv_broadcast(&spa->spa_proc_cv); | |
730 | CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */ | |
731 | ||
732 | mutex_enter(&curproc->p_lock); | |
733 | lwp_exit(); | |
734 | } | |
735 | #endif | |
736 | ||
737 | /* | |
738 | * Activate an uninitialized pool. | |
739 | */ | |
740 | static void | |
741 | spa_activate(spa_t *spa, int mode) | |
742 | { | |
743 | ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
744 | ||
745 | spa->spa_state = POOL_STATE_ACTIVE; | |
746 | spa->spa_mode = mode; | |
747 | ||
748 | spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
749 | spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops); | |
750 | ||
751 | /* Try to create a covering process */ | |
752 | mutex_enter(&spa->spa_proc_lock); | |
753 | ASSERT(spa->spa_proc_state == SPA_PROC_NONE); | |
754 | ASSERT(spa->spa_proc == &p0); | |
755 | spa->spa_did = 0; | |
756 | ||
757 | /* Only create a process if we're going to be around a while. */ | |
758 | if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) { | |
759 | if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri, | |
760 | NULL, 0) == 0) { | |
761 | spa->spa_proc_state = SPA_PROC_CREATED; | |
762 | while (spa->spa_proc_state == SPA_PROC_CREATED) { | |
763 | cv_wait(&spa->spa_proc_cv, | |
764 | &spa->spa_proc_lock); | |
9babb374 | 765 | } |
428870ff BB |
766 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); |
767 | ASSERT(spa->spa_proc != &p0); | |
768 | ASSERT(spa->spa_did != 0); | |
769 | } else { | |
770 | #ifdef _KERNEL | |
771 | cmn_err(CE_WARN, | |
772 | "Couldn't create process for zfs pool \"%s\"\n", | |
773 | spa->spa_name); | |
774 | #endif | |
b128c09f | 775 | } |
34dc7c2f | 776 | } |
428870ff BB |
777 | mutex_exit(&spa->spa_proc_lock); |
778 | ||
779 | /* If we didn't create a process, we need to create our taskqs. */ | |
780 | if (spa->spa_proc == &p0) { | |
781 | spa_create_zio_taskqs(spa); | |
782 | } | |
34dc7c2f | 783 | |
b128c09f BB |
784 | list_create(&spa->spa_config_dirty_list, sizeof (vdev_t), |
785 | offsetof(vdev_t, vdev_config_dirty_node)); | |
786 | list_create(&spa->spa_state_dirty_list, sizeof (vdev_t), | |
787 | offsetof(vdev_t, vdev_state_dirty_node)); | |
34dc7c2f BB |
788 | |
789 | txg_list_create(&spa->spa_vdev_txg_list, | |
790 | offsetof(struct vdev, vdev_txg_node)); | |
791 | ||
792 | avl_create(&spa->spa_errlist_scrub, | |
793 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
794 | offsetof(spa_error_entry_t, se_avl)); | |
795 | avl_create(&spa->spa_errlist_last, | |
796 | spa_error_entry_compare, sizeof (spa_error_entry_t), | |
797 | offsetof(spa_error_entry_t, se_avl)); | |
798 | } | |
799 | ||
800 | /* | |
801 | * Opposite of spa_activate(). | |
802 | */ | |
803 | static void | |
804 | spa_deactivate(spa_t *spa) | |
805 | { | |
34dc7c2f BB |
806 | ASSERT(spa->spa_sync_on == B_FALSE); |
807 | ASSERT(spa->spa_dsl_pool == NULL); | |
808 | ASSERT(spa->spa_root_vdev == NULL); | |
9babb374 | 809 | ASSERT(spa->spa_async_zio_root == NULL); |
34dc7c2f BB |
810 | ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); |
811 | ||
812 | txg_list_destroy(&spa->spa_vdev_txg_list); | |
813 | ||
b128c09f BB |
814 | list_destroy(&spa->spa_config_dirty_list); |
815 | list_destroy(&spa->spa_state_dirty_list); | |
34dc7c2f | 816 | |
b128c09f BB |
817 | for (int t = 0; t < ZIO_TYPES; t++) { |
818 | for (int q = 0; q < ZIO_TASKQ_TYPES; q++) { | |
428870ff BB |
819 | if (spa->spa_zio_taskq[t][q] != NULL) |
820 | taskq_destroy(spa->spa_zio_taskq[t][q]); | |
b128c09f BB |
821 | spa->spa_zio_taskq[t][q] = NULL; |
822 | } | |
34dc7c2f BB |
823 | } |
824 | ||
825 | metaslab_class_destroy(spa->spa_normal_class); | |
826 | spa->spa_normal_class = NULL; | |
827 | ||
828 | metaslab_class_destroy(spa->spa_log_class); | |
829 | spa->spa_log_class = NULL; | |
830 | ||
831 | /* | |
832 | * If this was part of an import or the open otherwise failed, we may | |
833 | * still have errors left in the queues. Empty them just in case. | |
834 | */ | |
835 | spa_errlog_drain(spa); | |
836 | ||
837 | avl_destroy(&spa->spa_errlist_scrub); | |
838 | avl_destroy(&spa->spa_errlist_last); | |
839 | ||
840 | spa->spa_state = POOL_STATE_UNINITIALIZED; | |
428870ff BB |
841 | |
842 | mutex_enter(&spa->spa_proc_lock); | |
843 | if (spa->spa_proc_state != SPA_PROC_NONE) { | |
844 | ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE); | |
845 | spa->spa_proc_state = SPA_PROC_DEACTIVATE; | |
846 | cv_broadcast(&spa->spa_proc_cv); | |
847 | while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) { | |
848 | ASSERT(spa->spa_proc != &p0); | |
849 | cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock); | |
850 | } | |
851 | ASSERT(spa->spa_proc_state == SPA_PROC_GONE); | |
852 | spa->spa_proc_state = SPA_PROC_NONE; | |
853 | } | |
854 | ASSERT(spa->spa_proc == &p0); | |
855 | mutex_exit(&spa->spa_proc_lock); | |
856 | ||
857 | /* | |
858 | * We want to make sure spa_thread() has actually exited the ZFS | |
859 | * module, so that the module can't be unloaded out from underneath | |
860 | * it. | |
861 | */ | |
862 | if (spa->spa_did != 0) { | |
863 | thread_join(spa->spa_did); | |
864 | spa->spa_did = 0; | |
865 | } | |
34dc7c2f BB |
866 | } |
867 | ||
868 | /* | |
869 | * Verify a pool configuration, and construct the vdev tree appropriately. This | |
870 | * will create all the necessary vdevs in the appropriate layout, with each vdev | |
871 | * in the CLOSED state. This will prep the pool before open/creation/import. | |
872 | * All vdev validation is done by the vdev_alloc() routine. | |
873 | */ | |
874 | static int | |
875 | spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
876 | uint_t id, int atype) | |
877 | { | |
878 | nvlist_t **child; | |
9babb374 | 879 | uint_t children; |
34dc7c2f BB |
880 | int error; |
881 | ||
882 | if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
883 | return (error); | |
884 | ||
885 | if ((*vdp)->vdev_ops->vdev_op_leaf) | |
886 | return (0); | |
887 | ||
b128c09f BB |
888 | error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
889 | &child, &children); | |
890 | ||
891 | if (error == ENOENT) | |
892 | return (0); | |
893 | ||
894 | if (error) { | |
34dc7c2f BB |
895 | vdev_free(*vdp); |
896 | *vdp = NULL; | |
897 | return (EINVAL); | |
898 | } | |
899 | ||
9babb374 | 900 | for (int c = 0; c < children; c++) { |
34dc7c2f BB |
901 | vdev_t *vd; |
902 | if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
903 | atype)) != 0) { | |
904 | vdev_free(*vdp); | |
905 | *vdp = NULL; | |
906 | return (error); | |
907 | } | |
908 | } | |
909 | ||
910 | ASSERT(*vdp != NULL); | |
911 | ||
912 | return (0); | |
913 | } | |
914 | ||
915 | /* | |
916 | * Opposite of spa_load(). | |
917 | */ | |
918 | static void | |
919 | spa_unload(spa_t *spa) | |
920 | { | |
921 | int i; | |
922 | ||
b128c09f BB |
923 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); |
924 | ||
34dc7c2f BB |
925 | /* |
926 | * Stop async tasks. | |
927 | */ | |
928 | spa_async_suspend(spa); | |
929 | ||
930 | /* | |
931 | * Stop syncing. | |
932 | */ | |
933 | if (spa->spa_sync_on) { | |
934 | txg_sync_stop(spa->spa_dsl_pool); | |
935 | spa->spa_sync_on = B_FALSE; | |
936 | } | |
937 | ||
938 | /* | |
b128c09f | 939 | * Wait for any outstanding async I/O to complete. |
34dc7c2f | 940 | */ |
9babb374 BB |
941 | if (spa->spa_async_zio_root != NULL) { |
942 | (void) zio_wait(spa->spa_async_zio_root); | |
943 | spa->spa_async_zio_root = NULL; | |
944 | } | |
34dc7c2f | 945 | |
428870ff BB |
946 | bpobj_close(&spa->spa_deferred_bpobj); |
947 | ||
34dc7c2f BB |
948 | /* |
949 | * Close the dsl pool. | |
950 | */ | |
951 | if (spa->spa_dsl_pool) { | |
952 | dsl_pool_close(spa->spa_dsl_pool); | |
953 | spa->spa_dsl_pool = NULL; | |
428870ff | 954 | spa->spa_meta_objset = NULL; |
34dc7c2f BB |
955 | } |
956 | ||
428870ff BB |
957 | ddt_unload(spa); |
958 | ||
fb5f0bc8 BB |
959 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
960 | ||
961 | /* | |
962 | * Drop and purge level 2 cache | |
963 | */ | |
964 | spa_l2cache_drop(spa); | |
965 | ||
34dc7c2f BB |
966 | /* |
967 | * Close all vdevs. | |
968 | */ | |
969 | if (spa->spa_root_vdev) | |
970 | vdev_free(spa->spa_root_vdev); | |
971 | ASSERT(spa->spa_root_vdev == NULL); | |
972 | ||
973 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
974 | vdev_free(spa->spa_spares.sav_vdevs[i]); | |
975 | if (spa->spa_spares.sav_vdevs) { | |
976 | kmem_free(spa->spa_spares.sav_vdevs, | |
977 | spa->spa_spares.sav_count * sizeof (void *)); | |
978 | spa->spa_spares.sav_vdevs = NULL; | |
979 | } | |
980 | if (spa->spa_spares.sav_config) { | |
981 | nvlist_free(spa->spa_spares.sav_config); | |
982 | spa->spa_spares.sav_config = NULL; | |
983 | } | |
b128c09f | 984 | spa->spa_spares.sav_count = 0; |
34dc7c2f BB |
985 | |
986 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) | |
987 | vdev_free(spa->spa_l2cache.sav_vdevs[i]); | |
988 | if (spa->spa_l2cache.sav_vdevs) { | |
989 | kmem_free(spa->spa_l2cache.sav_vdevs, | |
990 | spa->spa_l2cache.sav_count * sizeof (void *)); | |
991 | spa->spa_l2cache.sav_vdevs = NULL; | |
992 | } | |
993 | if (spa->spa_l2cache.sav_config) { | |
994 | nvlist_free(spa->spa_l2cache.sav_config); | |
995 | spa->spa_l2cache.sav_config = NULL; | |
996 | } | |
b128c09f | 997 | spa->spa_l2cache.sav_count = 0; |
34dc7c2f BB |
998 | |
999 | spa->spa_async_suspended = 0; | |
fb5f0bc8 BB |
1000 | |
1001 | spa_config_exit(spa, SCL_ALL, FTAG); | |
34dc7c2f BB |
1002 | } |
1003 | ||
1004 | /* | |
1005 | * Load (or re-load) the current list of vdevs describing the active spares for | |
1006 | * this pool. When this is called, we have some form of basic information in | |
1007 | * 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and | |
1008 | * then re-generate a more complete list including status information. | |
1009 | */ | |
1010 | static void | |
1011 | spa_load_spares(spa_t *spa) | |
1012 | { | |
1013 | nvlist_t **spares; | |
1014 | uint_t nspares; | |
1015 | int i; | |
1016 | vdev_t *vd, *tvd; | |
1017 | ||
b128c09f BB |
1018 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1019 | ||
34dc7c2f BB |
1020 | /* |
1021 | * First, close and free any existing spare vdevs. | |
1022 | */ | |
1023 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
1024 | vd = spa->spa_spares.sav_vdevs[i]; | |
1025 | ||
1026 | /* Undo the call to spa_activate() below */ | |
b128c09f BB |
1027 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1028 | B_FALSE)) != NULL && tvd->vdev_isspare) | |
34dc7c2f BB |
1029 | spa_spare_remove(tvd); |
1030 | vdev_close(vd); | |
1031 | vdev_free(vd); | |
1032 | } | |
1033 | ||
1034 | if (spa->spa_spares.sav_vdevs) | |
1035 | kmem_free(spa->spa_spares.sav_vdevs, | |
1036 | spa->spa_spares.sav_count * sizeof (void *)); | |
1037 | ||
1038 | if (spa->spa_spares.sav_config == NULL) | |
1039 | nspares = 0; | |
1040 | else | |
1041 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
1042 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
1043 | ||
1044 | spa->spa_spares.sav_count = (int)nspares; | |
1045 | spa->spa_spares.sav_vdevs = NULL; | |
1046 | ||
1047 | if (nspares == 0) | |
1048 | return; | |
1049 | ||
1050 | /* | |
1051 | * Construct the array of vdevs, opening them to get status in the | |
1052 | * process. For each spare, there is potentially two different vdev_t | |
1053 | * structures associated with it: one in the list of spares (used only | |
1054 | * for basic validation purposes) and one in the active vdev | |
1055 | * configuration (if it's spared in). During this phase we open and | |
1056 | * validate each vdev on the spare list. If the vdev also exists in the | |
1057 | * active configuration, then we also mark this vdev as an active spare. | |
1058 | */ | |
1059 | spa->spa_spares.sav_vdevs = kmem_alloc(nspares * sizeof (void *), | |
1060 | KM_SLEEP); | |
1061 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
1062 | VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
1063 | VDEV_ALLOC_SPARE) == 0); | |
1064 | ASSERT(vd != NULL); | |
1065 | ||
1066 | spa->spa_spares.sav_vdevs[i] = vd; | |
1067 | ||
b128c09f BB |
1068 | if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid, |
1069 | B_FALSE)) != NULL) { | |
34dc7c2f BB |
1070 | if (!tvd->vdev_isspare) |
1071 | spa_spare_add(tvd); | |
1072 | ||
1073 | /* | |
1074 | * We only mark the spare active if we were successfully | |
1075 | * able to load the vdev. Otherwise, importing a pool | |
1076 | * with a bad active spare would result in strange | |
1077 | * behavior, because multiple pool would think the spare | |
1078 | * is actively in use. | |
1079 | * | |
1080 | * There is a vulnerability here to an equally bizarre | |
1081 | * circumstance, where a dead active spare is later | |
1082 | * brought back to life (onlined or otherwise). Given | |
1083 | * the rarity of this scenario, and the extra complexity | |
1084 | * it adds, we ignore the possibility. | |
1085 | */ | |
1086 | if (!vdev_is_dead(tvd)) | |
1087 | spa_spare_activate(tvd); | |
1088 | } | |
1089 | ||
b128c09f | 1090 | vd->vdev_top = vd; |
9babb374 | 1091 | vd->vdev_aux = &spa->spa_spares; |
b128c09f | 1092 | |
34dc7c2f BB |
1093 | if (vdev_open(vd) != 0) |
1094 | continue; | |
1095 | ||
34dc7c2f BB |
1096 | if (vdev_validate_aux(vd) == 0) |
1097 | spa_spare_add(vd); | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * Recompute the stashed list of spares, with status information | |
1102 | * this time. | |
1103 | */ | |
1104 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES, | |
1105 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1106 | ||
1107 | spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *), | |
1108 | KM_SLEEP); | |
1109 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1110 | spares[i] = vdev_config_generate(spa, | |
428870ff | 1111 | spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE); |
34dc7c2f BB |
1112 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, |
1113 | ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0); | |
1114 | for (i = 0; i < spa->spa_spares.sav_count; i++) | |
1115 | nvlist_free(spares[i]); | |
1116 | kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *)); | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * Load (or re-load) the current list of vdevs describing the active l2cache for | |
1121 | * this pool. When this is called, we have some form of basic information in | |
1122 | * 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and | |
1123 | * then re-generate a more complete list including status information. | |
1124 | * Devices which are already active have their details maintained, and are | |
1125 | * not re-opened. | |
1126 | */ | |
1127 | static void | |
1128 | spa_load_l2cache(spa_t *spa) | |
1129 | { | |
1130 | nvlist_t **l2cache; | |
1131 | uint_t nl2cache; | |
1132 | int i, j, oldnvdevs; | |
9babb374 | 1133 | uint64_t guid; |
34dc7c2f BB |
1134 | vdev_t *vd, **oldvdevs, **newvdevs; |
1135 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
1136 | ||
b128c09f BB |
1137 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
1138 | ||
34dc7c2f BB |
1139 | if (sav->sav_config != NULL) { |
1140 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
1141 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
1142 | newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP); | |
1143 | } else { | |
1144 | nl2cache = 0; | |
1145 | } | |
1146 | ||
1147 | oldvdevs = sav->sav_vdevs; | |
1148 | oldnvdevs = sav->sav_count; | |
1149 | sav->sav_vdevs = NULL; | |
1150 | sav->sav_count = 0; | |
1151 | ||
1152 | /* | |
1153 | * Process new nvlist of vdevs. | |
1154 | */ | |
1155 | for (i = 0; i < nl2cache; i++) { | |
1156 | VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID, | |
1157 | &guid) == 0); | |
1158 | ||
1159 | newvdevs[i] = NULL; | |
1160 | for (j = 0; j < oldnvdevs; j++) { | |
1161 | vd = oldvdevs[j]; | |
1162 | if (vd != NULL && guid == vd->vdev_guid) { | |
1163 | /* | |
1164 | * Retain previous vdev for add/remove ops. | |
1165 | */ | |
1166 | newvdevs[i] = vd; | |
1167 | oldvdevs[j] = NULL; | |
1168 | break; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | if (newvdevs[i] == NULL) { | |
1173 | /* | |
1174 | * Create new vdev | |
1175 | */ | |
1176 | VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0, | |
1177 | VDEV_ALLOC_L2CACHE) == 0); | |
1178 | ASSERT(vd != NULL); | |
1179 | newvdevs[i] = vd; | |
1180 | ||
1181 | /* | |
1182 | * Commit this vdev as an l2cache device, | |
1183 | * even if it fails to open. | |
1184 | */ | |
1185 | spa_l2cache_add(vd); | |
1186 | ||
b128c09f BB |
1187 | vd->vdev_top = vd; |
1188 | vd->vdev_aux = sav; | |
1189 | ||
1190 | spa_l2cache_activate(vd); | |
1191 | ||
34dc7c2f BB |
1192 | if (vdev_open(vd) != 0) |
1193 | continue; | |
1194 | ||
34dc7c2f BB |
1195 | (void) vdev_validate_aux(vd); |
1196 | ||
9babb374 BB |
1197 | if (!vdev_is_dead(vd)) |
1198 | l2arc_add_vdev(spa, vd); | |
34dc7c2f BB |
1199 | } |
1200 | } | |
1201 | ||
1202 | /* | |
1203 | * Purge vdevs that were dropped | |
1204 | */ | |
1205 | for (i = 0; i < oldnvdevs; i++) { | |
1206 | uint64_t pool; | |
1207 | ||
1208 | vd = oldvdevs[i]; | |
1209 | if (vd != NULL) { | |
fb5f0bc8 BB |
1210 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
1211 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 1212 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
1213 | (void) vdev_close(vd); |
1214 | spa_l2cache_remove(vd); | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | if (oldvdevs) | |
1219 | kmem_free(oldvdevs, oldnvdevs * sizeof (void *)); | |
1220 | ||
1221 | if (sav->sav_config == NULL) | |
1222 | goto out; | |
1223 | ||
1224 | sav->sav_vdevs = newvdevs; | |
1225 | sav->sav_count = (int)nl2cache; | |
1226 | ||
1227 | /* | |
1228 | * Recompute the stashed list of l2cache devices, with status | |
1229 | * information this time. | |
1230 | */ | |
1231 | VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, | |
1232 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
1233 | ||
1234 | l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); | |
1235 | for (i = 0; i < sav->sav_count; i++) | |
1236 | l2cache[i] = vdev_config_generate(spa, | |
428870ff | 1237 | sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
1238 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, |
1239 | ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0); | |
1240 | out: | |
1241 | for (i = 0; i < sav->sav_count; i++) | |
1242 | nvlist_free(l2cache[i]); | |
1243 | if (sav->sav_count) | |
1244 | kmem_free(l2cache, sav->sav_count * sizeof (void *)); | |
1245 | } | |
1246 | ||
1247 | static int | |
1248 | load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
1249 | { | |
1250 | dmu_buf_t *db; | |
1251 | char *packed = NULL; | |
1252 | size_t nvsize = 0; | |
1253 | int error; | |
1254 | *value = NULL; | |
1255 | ||
1256 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
1257 | nvsize = *(uint64_t *)db->db_data; | |
1258 | dmu_buf_rele(db, FTAG); | |
1259 | ||
1260 | packed = kmem_alloc(nvsize, KM_SLEEP); | |
9babb374 BB |
1261 | error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed, |
1262 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
1263 | if (error == 0) |
1264 | error = nvlist_unpack(packed, nvsize, value, 0); | |
1265 | kmem_free(packed, nvsize); | |
1266 | ||
1267 | return (error); | |
1268 | } | |
1269 | ||
1270 | /* | |
1271 | * Checks to see if the given vdev could not be opened, in which case we post a | |
1272 | * sysevent to notify the autoreplace code that the device has been removed. | |
1273 | */ | |
1274 | static void | |
1275 | spa_check_removed(vdev_t *vd) | |
1276 | { | |
9babb374 | 1277 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
1278 | spa_check_removed(vd->vdev_child[c]); |
1279 | ||
1280 | if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd)) { | |
1281 | zfs_post_autoreplace(vd->vdev_spa, vd); | |
1282 | spa_event_notify(vd->vdev_spa, vd, ESC_ZFS_VDEV_CHECK); | |
1283 | } | |
1284 | } | |
1285 | ||
9babb374 BB |
1286 | /* |
1287 | * Load the slog device state from the config object since it's possible | |
1288 | * that the label does not contain the most up-to-date information. | |
1289 | */ | |
1290 | void | |
428870ff | 1291 | spa_load_log_state(spa_t *spa, nvlist_t *nv) |
9babb374 | 1292 | { |
428870ff | 1293 | vdev_t *ovd, *rvd = spa->spa_root_vdev; |
9babb374 | 1294 | |
428870ff BB |
1295 | /* |
1296 | * Load the original root vdev tree from the passed config. | |
1297 | */ | |
1298 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1299 | VERIFY(spa_config_parse(spa, &ovd, nv, NULL, 0, VDEV_ALLOC_LOAD) == 0); | |
9babb374 | 1300 | |
428870ff BB |
1301 | for (int c = 0; c < rvd->vdev_children; c++) { |
1302 | vdev_t *cvd = rvd->vdev_child[c]; | |
1303 | if (cvd->vdev_islog) | |
1304 | vdev_load_log_state(cvd, ovd->vdev_child[c]); | |
9babb374 | 1305 | } |
428870ff BB |
1306 | vdev_free(ovd); |
1307 | spa_config_exit(spa, SCL_ALL, FTAG); | |
9babb374 BB |
1308 | } |
1309 | ||
b128c09f BB |
1310 | /* |
1311 | * Check for missing log devices | |
1312 | */ | |
1313 | int | |
1314 | spa_check_logs(spa_t *spa) | |
1315 | { | |
1316 | switch (spa->spa_log_state) { | |
1317 | case SPA_LOG_MISSING: | |
1318 | /* need to recheck in case slog has been restored */ | |
1319 | case SPA_LOG_UNKNOWN: | |
1320 | if (dmu_objset_find(spa->spa_name, zil_check_log_chain, NULL, | |
1321 | DS_FIND_CHILDREN)) { | |
428870ff | 1322 | spa_set_log_state(spa, SPA_LOG_MISSING); |
b128c09f BB |
1323 | return (1); |
1324 | } | |
1325 | break; | |
b128c09f | 1326 | } |
b128c09f BB |
1327 | return (0); |
1328 | } | |
1329 | ||
428870ff BB |
1330 | static boolean_t |
1331 | spa_passivate_log(spa_t *spa) | |
34dc7c2f | 1332 | { |
428870ff BB |
1333 | vdev_t *rvd = spa->spa_root_vdev; |
1334 | boolean_t slog_found = B_FALSE; | |
b128c09f | 1335 | |
428870ff | 1336 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
fb5f0bc8 | 1337 | |
428870ff BB |
1338 | if (!spa_has_slogs(spa)) |
1339 | return (B_FALSE); | |
34dc7c2f | 1340 | |
428870ff BB |
1341 | for (int c = 0; c < rvd->vdev_children; c++) { |
1342 | vdev_t *tvd = rvd->vdev_child[c]; | |
1343 | metaslab_group_t *mg = tvd->vdev_mg; | |
34dc7c2f | 1344 | |
428870ff BB |
1345 | if (tvd->vdev_islog) { |
1346 | metaslab_group_passivate(mg); | |
1347 | slog_found = B_TRUE; | |
1348 | } | |
34dc7c2f BB |
1349 | } |
1350 | ||
428870ff BB |
1351 | return (slog_found); |
1352 | } | |
34dc7c2f | 1353 | |
428870ff BB |
1354 | static void |
1355 | spa_activate_log(spa_t *spa) | |
1356 | { | |
1357 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f | 1358 | |
428870ff BB |
1359 | ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
1360 | ||
1361 | for (int c = 0; c < rvd->vdev_children; c++) { | |
1362 | vdev_t *tvd = rvd->vdev_child[c]; | |
1363 | metaslab_group_t *mg = tvd->vdev_mg; | |
1364 | ||
1365 | if (tvd->vdev_islog) | |
1366 | metaslab_group_activate(mg); | |
34dc7c2f | 1367 | } |
428870ff | 1368 | } |
34dc7c2f | 1369 | |
428870ff BB |
1370 | int |
1371 | spa_offline_log(spa_t *spa) | |
1372 | { | |
1373 | int error = 0; | |
34dc7c2f | 1374 | |
428870ff BB |
1375 | if ((error = dmu_objset_find(spa_name(spa), zil_vdev_offline, |
1376 | NULL, DS_FIND_CHILDREN)) == 0) { | |
9babb374 | 1377 | |
428870ff BB |
1378 | /* |
1379 | * We successfully offlined the log device, sync out the | |
1380 | * current txg so that the "stubby" block can be removed | |
1381 | * by zil_sync(). | |
1382 | */ | |
1383 | txg_wait_synced(spa->spa_dsl_pool, 0); | |
1384 | } | |
1385 | return (error); | |
1386 | } | |
34dc7c2f | 1387 | |
428870ff BB |
1388 | static void |
1389 | spa_aux_check_removed(spa_aux_vdev_t *sav) | |
1390 | { | |
1391 | for (int i = 0; i < sav->sav_count; i++) | |
1392 | spa_check_removed(sav->sav_vdevs[i]); | |
1393 | } | |
34dc7c2f | 1394 | |
428870ff BB |
1395 | void |
1396 | spa_claim_notify(zio_t *zio) | |
1397 | { | |
1398 | spa_t *spa = zio->io_spa; | |
34dc7c2f | 1399 | |
428870ff BB |
1400 | if (zio->io_error) |
1401 | return; | |
34dc7c2f | 1402 | |
428870ff BB |
1403 | mutex_enter(&spa->spa_props_lock); /* any mutex will do */ |
1404 | if (spa->spa_claim_max_txg < zio->io_bp->blk_birth) | |
1405 | spa->spa_claim_max_txg = zio->io_bp->blk_birth; | |
1406 | mutex_exit(&spa->spa_props_lock); | |
1407 | } | |
34dc7c2f | 1408 | |
428870ff BB |
1409 | typedef struct spa_load_error { |
1410 | uint64_t sle_meta_count; | |
1411 | uint64_t sle_data_count; | |
1412 | } spa_load_error_t; | |
34dc7c2f | 1413 | |
428870ff BB |
1414 | static void |
1415 | spa_load_verify_done(zio_t *zio) | |
1416 | { | |
1417 | blkptr_t *bp = zio->io_bp; | |
1418 | spa_load_error_t *sle = zio->io_private; | |
1419 | dmu_object_type_t type = BP_GET_TYPE(bp); | |
1420 | int error = zio->io_error; | |
34dc7c2f | 1421 | |
428870ff BB |
1422 | if (error) { |
1423 | if ((BP_GET_LEVEL(bp) != 0 || dmu_ot[type].ot_metadata) && | |
1424 | type != DMU_OT_INTENT_LOG) | |
1425 | atomic_add_64(&sle->sle_meta_count, 1); | |
1426 | else | |
1427 | atomic_add_64(&sle->sle_data_count, 1); | |
34dc7c2f | 1428 | } |
428870ff BB |
1429 | zio_data_buf_free(zio->io_data, zio->io_size); |
1430 | } | |
34dc7c2f | 1431 | |
428870ff BB |
1432 | /*ARGSUSED*/ |
1433 | static int | |
1434 | spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, | |
1435 | arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg) | |
1436 | { | |
1437 | if (bp != NULL) { | |
1438 | zio_t *rio = arg; | |
1439 | size_t size = BP_GET_PSIZE(bp); | |
1440 | void *data = zio_data_buf_alloc(size); | |
34dc7c2f | 1441 | |
428870ff BB |
1442 | zio_nowait(zio_read(rio, spa, bp, data, size, |
1443 | spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB, | |
1444 | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL | | |
1445 | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb)); | |
34dc7c2f | 1446 | } |
428870ff BB |
1447 | return (0); |
1448 | } | |
34dc7c2f | 1449 | |
428870ff BB |
1450 | static int |
1451 | spa_load_verify(spa_t *spa) | |
1452 | { | |
1453 | zio_t *rio; | |
1454 | spa_load_error_t sle = { 0 }; | |
1455 | zpool_rewind_policy_t policy; | |
1456 | boolean_t verify_ok = B_FALSE; | |
1457 | int error; | |
34dc7c2f | 1458 | |
428870ff | 1459 | zpool_get_rewind_policy(spa->spa_config, &policy); |
34dc7c2f | 1460 | |
428870ff BB |
1461 | if (policy.zrp_request & ZPOOL_NEVER_REWIND) |
1462 | return (0); | |
34dc7c2f | 1463 | |
428870ff BB |
1464 | rio = zio_root(spa, NULL, &sle, |
1465 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
34dc7c2f | 1466 | |
428870ff BB |
1467 | error = traverse_pool(spa, spa->spa_verify_min_txg, |
1468 | TRAVERSE_PRE | TRAVERSE_PREFETCH, spa_load_verify_cb, rio); | |
1469 | ||
1470 | (void) zio_wait(rio); | |
1471 | ||
1472 | spa->spa_load_meta_errors = sle.sle_meta_count; | |
1473 | spa->spa_load_data_errors = sle.sle_data_count; | |
1474 | ||
1475 | if (!error && sle.sle_meta_count <= policy.zrp_maxmeta && | |
1476 | sle.sle_data_count <= policy.zrp_maxdata) { | |
1477 | verify_ok = B_TRUE; | |
1478 | spa->spa_load_txg = spa->spa_uberblock.ub_txg; | |
1479 | spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp; | |
1480 | } else { | |
1481 | spa->spa_load_max_txg = spa->spa_uberblock.ub_txg; | |
1482 | } | |
1483 | ||
1484 | if (error) { | |
1485 | if (error != ENXIO && error != EIO) | |
1486 | error = EIO; | |
1487 | return (error); | |
1488 | } | |
1489 | ||
1490 | return (verify_ok ? 0 : EIO); | |
1491 | } | |
1492 | ||
1493 | /* | |
1494 | * Find a value in the pool props object. | |
1495 | */ | |
1496 | static void | |
1497 | spa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val) | |
1498 | { | |
1499 | (void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object, | |
1500 | zpool_prop_to_name(prop), sizeof (uint64_t), 1, val); | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * Find a value in the pool directory object. | |
1505 | */ | |
1506 | static int | |
1507 | spa_dir_prop(spa_t *spa, const char *name, uint64_t *val) | |
1508 | { | |
1509 | return (zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
1510 | name, sizeof (uint64_t), 1, val)); | |
1511 | } | |
1512 | ||
1513 | static int | |
1514 | spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err) | |
1515 | { | |
1516 | vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux); | |
1517 | return (err); | |
1518 | } | |
1519 | ||
1520 | /* | |
1521 | * Fix up config after a partly-completed split. This is done with the | |
1522 | * ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off | |
1523 | * pool have that entry in their config, but only the splitting one contains | |
1524 | * a list of all the guids of the vdevs that are being split off. | |
1525 | * | |
1526 | * This function determines what to do with that list: either rejoin | |
1527 | * all the disks to the pool, or complete the splitting process. To attempt | |
1528 | * the rejoin, each disk that is offlined is marked online again, and | |
1529 | * we do a reopen() call. If the vdev label for every disk that was | |
1530 | * marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL) | |
1531 | * then we call vdev_split() on each disk, and complete the split. | |
1532 | * | |
1533 | * Otherwise we leave the config alone, with all the vdevs in place in | |
1534 | * the original pool. | |
1535 | */ | |
1536 | static void | |
1537 | spa_try_repair(spa_t *spa, nvlist_t *config) | |
1538 | { | |
1539 | uint_t extracted; | |
1540 | uint64_t *glist; | |
1541 | uint_t i, gcount; | |
1542 | nvlist_t *nvl; | |
1543 | vdev_t **vd; | |
1544 | boolean_t attempt_reopen; | |
1545 | ||
1546 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0) | |
1547 | return; | |
1548 | ||
1549 | /* check that the config is complete */ | |
1550 | if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, | |
1551 | &glist, &gcount) != 0) | |
1552 | return; | |
1553 | ||
1554 | vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_SLEEP); | |
1555 | ||
1556 | /* attempt to online all the vdevs & validate */ | |
1557 | attempt_reopen = B_TRUE; | |
1558 | for (i = 0; i < gcount; i++) { | |
1559 | if (glist[i] == 0) /* vdev is hole */ | |
1560 | continue; | |
1561 | ||
1562 | vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE); | |
1563 | if (vd[i] == NULL) { | |
1564 | /* | |
1565 | * Don't bother attempting to reopen the disks; | |
1566 | * just do the split. | |
1567 | */ | |
1568 | attempt_reopen = B_FALSE; | |
1569 | } else { | |
1570 | /* attempt to re-online it */ | |
1571 | vd[i]->vdev_offline = B_FALSE; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | if (attempt_reopen) { | |
1576 | vdev_reopen(spa->spa_root_vdev); | |
1577 | ||
1578 | /* check each device to see what state it's in */ | |
1579 | for (extracted = 0, i = 0; i < gcount; i++) { | |
1580 | if (vd[i] != NULL && | |
1581 | vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL) | |
1582 | break; | |
1583 | ++extracted; | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | /* | |
1588 | * If every disk has been moved to the new pool, or if we never | |
1589 | * even attempted to look at them, then we split them off for | |
1590 | * good. | |
1591 | */ | |
1592 | if (!attempt_reopen || gcount == extracted) { | |
1593 | for (i = 0; i < gcount; i++) | |
1594 | if (vd[i] != NULL) | |
1595 | vdev_split(vd[i]); | |
1596 | vdev_reopen(spa->spa_root_vdev); | |
1597 | } | |
1598 | ||
1599 | kmem_free(vd, gcount * sizeof (vdev_t *)); | |
1600 | } | |
1601 | ||
1602 | static int | |
1603 | spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type, | |
1604 | boolean_t mosconfig) | |
1605 | { | |
1606 | nvlist_t *config = spa->spa_config; | |
1607 | char *ereport = FM_EREPORT_ZFS_POOL; | |
1608 | int error; | |
1609 | uint64_t pool_guid; | |
1610 | nvlist_t *nvl; | |
1611 | ||
1612 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) | |
1613 | return (EINVAL); | |
1614 | ||
1615 | /* | |
1616 | * Versioning wasn't explicitly added to the label until later, so if | |
1617 | * it's not present treat it as the initial version. | |
1618 | */ | |
1619 | if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, | |
1620 | &spa->spa_ubsync.ub_version) != 0) | |
1621 | spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL; | |
1622 | ||
1623 | (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
1624 | &spa->spa_config_txg); | |
1625 | ||
1626 | if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && | |
1627 | spa_guid_exists(pool_guid, 0)) { | |
1628 | error = EEXIST; | |
1629 | } else { | |
1630 | spa->spa_load_guid = pool_guid; | |
1631 | ||
1632 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, | |
1633 | &nvl) == 0) { | |
1634 | VERIFY(nvlist_dup(nvl, &spa->spa_config_splitting, | |
1635 | KM_SLEEP) == 0); | |
1636 | } | |
1637 | ||
1638 | error = spa_load_impl(spa, pool_guid, config, state, type, | |
1639 | mosconfig, &ereport); | |
1640 | } | |
1641 | ||
1642 | spa->spa_minref = refcount_count(&spa->spa_refcount); | |
1643 | if (error && error != EBADF) | |
1644 | zfs_ereport_post(ereport, spa, NULL, NULL, 0, 0); | |
1645 | spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE; | |
1646 | spa->spa_ena = 0; | |
1647 | ||
1648 | return (error); | |
1649 | } | |
1650 | ||
1651 | /* | |
1652 | * Load an existing storage pool, using the pool's builtin spa_config as a | |
1653 | * source of configuration information. | |
1654 | */ | |
1655 | static int | |
1656 | spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config, | |
1657 | spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, | |
1658 | char **ereport) | |
1659 | { | |
1660 | int error = 0; | |
1661 | nvlist_t *nvroot = NULL; | |
1662 | vdev_t *rvd; | |
1663 | uberblock_t *ub = &spa->spa_uberblock; | |
1664 | uint64_t config_cache_txg = spa->spa_config_txg; | |
1665 | int orig_mode = spa->spa_mode; | |
1666 | int parse; | |
1667 | uint64_t obj; | |
1668 | ||
1669 | /* | |
1670 | * If this is an untrusted config, access the pool in read-only mode. | |
1671 | * This prevents things like resilvering recently removed devices. | |
1672 | */ | |
1673 | if (!mosconfig) | |
1674 | spa->spa_mode = FREAD; | |
1675 | ||
1676 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
1677 | ||
1678 | spa->spa_load_state = state; | |
1679 | ||
1680 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot)) | |
1681 | return (EINVAL); | |
1682 | ||
1683 | parse = (type == SPA_IMPORT_EXISTING ? | |
1684 | VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT); | |
1685 | ||
1686 | /* | |
1687 | * Create "The Godfather" zio to hold all async IOs | |
1688 | */ | |
1689 | spa->spa_async_zio_root = zio_root(spa, NULL, NULL, | |
1690 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_GODFATHER); | |
1691 | ||
1692 | /* | |
1693 | * Parse the configuration into a vdev tree. We explicitly set the | |
1694 | * value that will be returned by spa_version() since parsing the | |
1695 | * configuration requires knowing the version number. | |
1696 | */ | |
1697 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1698 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, parse); | |
1699 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1700 | ||
1701 | if (error != 0) | |
1702 | return (error); | |
1703 | ||
1704 | ASSERT(spa->spa_root_vdev == rvd); | |
1705 | ||
1706 | if (type != SPA_IMPORT_ASSEMBLE) { | |
1707 | ASSERT(spa_guid(spa) == pool_guid); | |
1708 | } | |
1709 | ||
1710 | /* | |
1711 | * Try to open all vdevs, loading each label in the process. | |
1712 | */ | |
1713 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1714 | error = vdev_open(rvd); | |
1715 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1716 | if (error != 0) | |
1717 | return (error); | |
1718 | ||
1719 | /* | |
1720 | * We need to validate the vdev labels against the configuration that | |
1721 | * we have in hand, which is dependent on the setting of mosconfig. If | |
1722 | * mosconfig is true then we're validating the vdev labels based on | |
1723 | * that config. Otherwise, we're validating against the cached config | |
1724 | * (zpool.cache) that was read when we loaded the zfs module, and then | |
1725 | * later we will recursively call spa_load() and validate against | |
1726 | * the vdev config. | |
1727 | * | |
1728 | * If we're assembling a new pool that's been split off from an | |
1729 | * existing pool, the labels haven't yet been updated so we skip | |
1730 | * validation for now. | |
1731 | */ | |
1732 | if (type != SPA_IMPORT_ASSEMBLE) { | |
1733 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1734 | error = vdev_validate(rvd); | |
1735 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1736 | ||
1737 | if (error != 0) | |
1738 | return (error); | |
1739 | ||
1740 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) | |
1741 | return (ENXIO); | |
1742 | } | |
1743 | ||
1744 | /* | |
1745 | * Find the best uberblock. | |
1746 | */ | |
1747 | vdev_uberblock_load(NULL, rvd, ub); | |
1748 | ||
1749 | /* | |
1750 | * If we weren't able to find a single valid uberblock, return failure. | |
1751 | */ | |
1752 | if (ub->ub_txg == 0) | |
1753 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO)); | |
1754 | ||
1755 | /* | |
1756 | * If the pool is newer than the code, we can't open it. | |
1757 | */ | |
1758 | if (ub->ub_version > SPA_VERSION) | |
1759 | return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP)); | |
1760 | ||
1761 | /* | |
1762 | * If the vdev guid sum doesn't match the uberblock, we have an | |
1763 | * incomplete configuration. | |
1764 | */ | |
1765 | if (mosconfig && type != SPA_IMPORT_ASSEMBLE && | |
1766 | rvd->vdev_guid_sum != ub->ub_guid_sum) | |
1767 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO)); | |
1768 | ||
1769 | if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) { | |
1770 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
1771 | spa_try_repair(spa, config); | |
1772 | spa_config_exit(spa, SCL_ALL, FTAG); | |
1773 | nvlist_free(spa->spa_config_splitting); | |
1774 | spa->spa_config_splitting = NULL; | |
1775 | } | |
1776 | ||
1777 | /* | |
1778 | * Initialize internal SPA structures. | |
1779 | */ | |
1780 | spa->spa_state = POOL_STATE_ACTIVE; | |
1781 | spa->spa_ubsync = spa->spa_uberblock; | |
1782 | spa->spa_verify_min_txg = spa->spa_extreme_rewind ? | |
1783 | TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1; | |
1784 | spa->spa_first_txg = spa->spa_last_ubsync_txg ? | |
1785 | spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1; | |
1786 | spa->spa_claim_max_txg = spa->spa_first_txg; | |
1787 | spa->spa_prev_software_version = ub->ub_software_version; | |
1788 | ||
1789 | error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); | |
1790 | if (error) | |
1791 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1792 | spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; | |
1793 | ||
1794 | if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object) != 0) | |
1795 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1796 | ||
1797 | if (!mosconfig) { | |
1798 | uint64_t hostid; | |
1799 | nvlist_t *policy = NULL, *nvconfig; | |
1800 | ||
1801 | if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) | |
1802 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1803 | ||
1804 | if (!spa_is_root(spa) && nvlist_lookup_uint64(nvconfig, | |
b128c09f | 1805 | ZPOOL_CONFIG_HOSTID, &hostid) == 0) { |
34dc7c2f BB |
1806 | char *hostname; |
1807 | unsigned long myhostid = 0; | |
1808 | ||
428870ff | 1809 | VERIFY(nvlist_lookup_string(nvconfig, |
34dc7c2f BB |
1810 | ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); |
1811 | ||
d164b209 BB |
1812 | #ifdef _KERNEL |
1813 | myhostid = zone_get_hostid(NULL); | |
1814 | #else /* _KERNEL */ | |
1815 | /* | |
1816 | * We're emulating the system's hostid in userland, so | |
1817 | * we can't use zone_get_hostid(). | |
1818 | */ | |
34dc7c2f | 1819 | (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); |
d164b209 | 1820 | #endif /* _KERNEL */ |
34dc7c2f | 1821 | if (hostid != 0 && myhostid != 0 && |
d164b209 | 1822 | hostid != myhostid) { |
428870ff | 1823 | nvlist_free(nvconfig); |
34dc7c2f BB |
1824 | cmn_err(CE_WARN, "pool '%s' could not be " |
1825 | "loaded as it was last accessed by " | |
b128c09f | 1826 | "another system (host: %s hostid: 0x%lx). " |
34dc7c2f | 1827 | "See: http://www.sun.com/msg/ZFS-8000-EY", |
b128c09f | 1828 | spa_name(spa), hostname, |
34dc7c2f | 1829 | (unsigned long)hostid); |
428870ff | 1830 | return (EBADF); |
34dc7c2f BB |
1831 | } |
1832 | } | |
428870ff BB |
1833 | if (nvlist_lookup_nvlist(spa->spa_config, |
1834 | ZPOOL_REWIND_POLICY, &policy) == 0) | |
1835 | VERIFY(nvlist_add_nvlist(nvconfig, | |
1836 | ZPOOL_REWIND_POLICY, policy) == 0); | |
34dc7c2f | 1837 | |
428870ff | 1838 | spa_config_set(spa, nvconfig); |
34dc7c2f BB |
1839 | spa_unload(spa); |
1840 | spa_deactivate(spa); | |
fb5f0bc8 | 1841 | spa_activate(spa, orig_mode); |
34dc7c2f | 1842 | |
428870ff | 1843 | return (spa_load(spa, state, SPA_IMPORT_EXISTING, B_TRUE)); |
34dc7c2f BB |
1844 | } |
1845 | ||
428870ff BB |
1846 | if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj) != 0) |
1847 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1848 | error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj); | |
1849 | if (error != 0) | |
1850 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
1851 | |
1852 | /* | |
1853 | * Load the bit that tells us to use the new accounting function | |
1854 | * (raid-z deflation). If we have an older pool, this will not | |
1855 | * be present. | |
1856 | */ | |
428870ff BB |
1857 | error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate); |
1858 | if (error != 0 && error != ENOENT) | |
1859 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1860 | ||
1861 | error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION, | |
1862 | &spa->spa_creation_version); | |
1863 | if (error != 0 && error != ENOENT) | |
1864 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
1865 | |
1866 | /* | |
1867 | * Load the persistent error log. If we have an older pool, this will | |
1868 | * not be present. | |
1869 | */ | |
428870ff BB |
1870 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last); |
1871 | if (error != 0 && error != ENOENT) | |
1872 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 1873 | |
428870ff BB |
1874 | error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB, |
1875 | &spa->spa_errlog_scrub); | |
1876 | if (error != 0 && error != ENOENT) | |
1877 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
1878 | |
1879 | /* | |
1880 | * Load the history object. If we have an older pool, this | |
1881 | * will not be present. | |
1882 | */ | |
428870ff BB |
1883 | error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history); |
1884 | if (error != 0 && error != ENOENT) | |
1885 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1886 | ||
1887 | /* | |
1888 | * If we're assembling the pool from the split-off vdevs of | |
1889 | * an existing pool, we don't want to attach the spares & cache | |
1890 | * devices. | |
1891 | */ | |
34dc7c2f BB |
1892 | |
1893 | /* | |
1894 | * Load any hot spares for this pool. | |
1895 | */ | |
428870ff BB |
1896 | error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object); |
1897 | if (error != 0 && error != ENOENT) | |
1898 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1899 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
1900 | ASSERT(spa_version(spa) >= SPA_VERSION_SPARES); |
1901 | if (load_nvlist(spa, spa->spa_spares.sav_object, | |
428870ff BB |
1902 | &spa->spa_spares.sav_config) != 0) |
1903 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 1904 | |
b128c09f | 1905 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1906 | spa_load_spares(spa); |
b128c09f | 1907 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
1908 | } else if (error == 0) { |
1909 | spa->spa_spares.sav_sync = B_TRUE; | |
34dc7c2f BB |
1910 | } |
1911 | ||
1912 | /* | |
1913 | * Load any level 2 ARC devices for this pool. | |
1914 | */ | |
428870ff | 1915 | error = spa_dir_prop(spa, DMU_POOL_L2CACHE, |
34dc7c2f | 1916 | &spa->spa_l2cache.sav_object); |
428870ff BB |
1917 | if (error != 0 && error != ENOENT) |
1918 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1919 | if (error == 0 && type != SPA_IMPORT_ASSEMBLE) { | |
34dc7c2f BB |
1920 | ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE); |
1921 | if (load_nvlist(spa, spa->spa_l2cache.sav_object, | |
428870ff BB |
1922 | &spa->spa_l2cache.sav_config) != 0) |
1923 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f | 1924 | |
b128c09f | 1925 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1926 | spa_load_l2cache(spa); |
b128c09f | 1927 | spa_config_exit(spa, SCL_ALL, FTAG); |
428870ff BB |
1928 | } else if (error == 0) { |
1929 | spa->spa_l2cache.sav_sync = B_TRUE; | |
b128c09f BB |
1930 | } |
1931 | ||
34dc7c2f BB |
1932 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
1933 | ||
428870ff BB |
1934 | error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object); |
1935 | if (error && error != ENOENT) | |
1936 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
34dc7c2f BB |
1937 | |
1938 | if (error == 0) { | |
428870ff BB |
1939 | uint64_t autoreplace; |
1940 | ||
1941 | spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs); | |
1942 | spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace); | |
1943 | spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation); | |
1944 | spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode); | |
1945 | spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand); | |
1946 | spa_prop_find(spa, ZPOOL_PROP_DEDUPDITTO, | |
1947 | &spa->spa_dedup_ditto); | |
1948 | ||
1949 | spa->spa_autoreplace = (autoreplace != 0); | |
34dc7c2f BB |
1950 | } |
1951 | ||
1952 | /* | |
1953 | * If the 'autoreplace' property is set, then post a resource notifying | |
1954 | * the ZFS DE that it should not issue any faults for unopenable | |
1955 | * devices. We also iterate over the vdevs, and post a sysevent for any | |
1956 | * unopenable vdevs so that the normal autoreplace handler can take | |
1957 | * over. | |
1958 | */ | |
428870ff | 1959 | if (spa->spa_autoreplace && state != SPA_LOAD_TRYIMPORT) { |
34dc7c2f | 1960 | spa_check_removed(spa->spa_root_vdev); |
428870ff BB |
1961 | /* |
1962 | * For the import case, this is done in spa_import(), because | |
1963 | * at this point we're using the spare definitions from | |
1964 | * the MOS config, not necessarily from the userland config. | |
1965 | */ | |
1966 | if (state != SPA_LOAD_IMPORT) { | |
1967 | spa_aux_check_removed(&spa->spa_spares); | |
1968 | spa_aux_check_removed(&spa->spa_l2cache); | |
1969 | } | |
1970 | } | |
34dc7c2f BB |
1971 | |
1972 | /* | |
1973 | * Load the vdev state for all toplevel vdevs. | |
1974 | */ | |
1975 | vdev_load(rvd); | |
1976 | ||
1977 | /* | |
1978 | * Propagate the leaf DTLs we just loaded all the way up the tree. | |
1979 | */ | |
b128c09f | 1980 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 1981 | vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
b128c09f | 1982 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
1983 | |
1984 | /* | |
1985 | * Check the state of the root vdev. If it can't be opened, it | |
1986 | * indicates one or more toplevel vdevs are faulted. | |
1987 | */ | |
428870ff BB |
1988 | if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) |
1989 | return (ENXIO); | |
1990 | ||
1991 | /* | |
1992 | * Load the DDTs (dedup tables). | |
1993 | */ | |
1994 | error = ddt_load(spa); | |
1995 | if (error != 0) | |
1996 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
1997 | ||
1998 | spa_update_dspace(spa); | |
1999 | ||
2000 | if (state != SPA_LOAD_TRYIMPORT) { | |
2001 | error = spa_load_verify(spa); | |
2002 | if (error) | |
2003 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, | |
2004 | error)); | |
34dc7c2f BB |
2005 | } |
2006 | ||
428870ff BB |
2007 | /* |
2008 | * Load the intent log state and check log integrity. If we're | |
2009 | * assembling a pool from a split, the log is not transferred over. | |
2010 | */ | |
2011 | if (type != SPA_IMPORT_ASSEMBLE) { | |
2012 | nvlist_t *nvconfig; | |
2013 | ||
2014 | if (load_nvlist(spa, spa->spa_config_object, &nvconfig) != 0) | |
2015 | return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO)); | |
2016 | ||
2017 | VERIFY(nvlist_lookup_nvlist(nvconfig, ZPOOL_CONFIG_VDEV_TREE, | |
2018 | &nvroot) == 0); | |
2019 | spa_load_log_state(spa, nvroot); | |
2020 | nvlist_free(nvconfig); | |
2021 | ||
2022 | if (spa_check_logs(spa)) { | |
2023 | *ereport = FM_EREPORT_ZFS_LOG_REPLAY; | |
2024 | return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG, ENXIO)); | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | if (spa_writeable(spa) && (state == SPA_LOAD_RECOVER || | |
2029 | spa->spa_load_max_txg == UINT64_MAX)) { | |
34dc7c2f BB |
2030 | dmu_tx_t *tx; |
2031 | int need_update = B_FALSE; | |
fb5f0bc8 BB |
2032 | |
2033 | ASSERT(state != SPA_LOAD_TRYIMPORT); | |
34dc7c2f BB |
2034 | |
2035 | /* | |
2036 | * Claim log blocks that haven't been committed yet. | |
2037 | * This must all happen in a single txg. | |
428870ff BB |
2038 | * Note: spa_claim_max_txg is updated by spa_claim_notify(), |
2039 | * invoked from zil_claim_log_block()'s i/o done callback. | |
2040 | * Price of rollback is that we abandon the log. | |
34dc7c2f | 2041 | */ |
428870ff BB |
2042 | spa->spa_claiming = B_TRUE; |
2043 | ||
34dc7c2f BB |
2044 | tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
2045 | spa_first_txg(spa)); | |
b128c09f | 2046 | (void) dmu_objset_find(spa_name(spa), |
34dc7c2f BB |
2047 | zil_claim, tx, DS_FIND_CHILDREN); |
2048 | dmu_tx_commit(tx); | |
2049 | ||
428870ff BB |
2050 | spa->spa_claiming = B_FALSE; |
2051 | ||
2052 | spa_set_log_state(spa, SPA_LOG_GOOD); | |
34dc7c2f BB |
2053 | spa->spa_sync_on = B_TRUE; |
2054 | txg_sync_start(spa->spa_dsl_pool); | |
2055 | ||
2056 | /* | |
428870ff BB |
2057 | * Wait for all claims to sync. We sync up to the highest |
2058 | * claimed log block birth time so that claimed log blocks | |
2059 | * don't appear to be from the future. spa_claim_max_txg | |
2060 | * will have been set for us by either zil_check_log_chain() | |
2061 | * (invoked from spa_check_logs()) or zil_claim() above. | |
34dc7c2f | 2062 | */ |
428870ff | 2063 | txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg); |
34dc7c2f BB |
2064 | |
2065 | /* | |
2066 | * If the config cache is stale, or we have uninitialized | |
2067 | * metaslabs (see spa_vdev_add()), then update the config. | |
45d1cae3 BB |
2068 | * |
2069 | * If spa_load_verbatim is true, trust the current | |
2070 | * in-core spa_config and update the disk labels. | |
34dc7c2f BB |
2071 | */ |
2072 | if (config_cache_txg != spa->spa_config_txg || | |
428870ff BB |
2073 | state == SPA_LOAD_IMPORT || spa->spa_load_verbatim || |
2074 | state == SPA_LOAD_RECOVER) | |
34dc7c2f BB |
2075 | need_update = B_TRUE; |
2076 | ||
fb5f0bc8 | 2077 | for (int c = 0; c < rvd->vdev_children; c++) |
34dc7c2f BB |
2078 | if (rvd->vdev_child[c]->vdev_ms_array == 0) |
2079 | need_update = B_TRUE; | |
2080 | ||
2081 | /* | |
2082 | * Update the config cache asychronously in case we're the | |
2083 | * root pool, in which case the config cache isn't writable yet. | |
2084 | */ | |
2085 | if (need_update) | |
2086 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
fb5f0bc8 BB |
2087 | |
2088 | /* | |
2089 | * Check all DTLs to see if anything needs resilvering. | |
2090 | */ | |
428870ff BB |
2091 | if (!dsl_scan_resilvering(spa->spa_dsl_pool) && |
2092 | vdev_resilver_needed(rvd, NULL, NULL)) | |
fb5f0bc8 | 2093 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
428870ff BB |
2094 | |
2095 | /* | |
2096 | * Delete any inconsistent datasets. | |
2097 | */ | |
2098 | (void) dmu_objset_find(spa_name(spa), | |
2099 | dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN); | |
2100 | ||
2101 | /* | |
2102 | * Clean up any stale temporary dataset userrefs. | |
2103 | */ | |
2104 | dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool); | |
34dc7c2f BB |
2105 | } |
2106 | ||
428870ff BB |
2107 | return (0); |
2108 | } | |
34dc7c2f | 2109 | |
428870ff BB |
2110 | static int |
2111 | spa_load_retry(spa_t *spa, spa_load_state_t state, int mosconfig) | |
2112 | { | |
2113 | spa_unload(spa); | |
2114 | spa_deactivate(spa); | |
2115 | ||
2116 | spa->spa_load_max_txg--; | |
2117 | ||
2118 | spa_activate(spa, spa_mode_global); | |
2119 | spa_async_suspend(spa); | |
2120 | ||
2121 | return (spa_load(spa, state, SPA_IMPORT_EXISTING, mosconfig)); | |
2122 | } | |
2123 | ||
2124 | static int | |
2125 | spa_load_best(spa_t *spa, spa_load_state_t state, int mosconfig, | |
2126 | uint64_t max_request, int rewind_flags) | |
2127 | { | |
2128 | nvlist_t *config = NULL; | |
2129 | int load_error, rewind_error; | |
2130 | uint64_t safe_rewind_txg; | |
2131 | uint64_t min_txg; | |
2132 | ||
2133 | if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) { | |
2134 | spa->spa_load_max_txg = spa->spa_load_txg; | |
2135 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
2136 | } else { | |
2137 | spa->spa_load_max_txg = max_request; | |
2138 | } | |
2139 | ||
2140 | load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING, | |
2141 | mosconfig); | |
2142 | if (load_error == 0) | |
2143 | return (0); | |
2144 | ||
2145 | if (spa->spa_root_vdev != NULL) | |
2146 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); | |
2147 | ||
2148 | spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg; | |
2149 | spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp; | |
2150 | ||
2151 | if (rewind_flags & ZPOOL_NEVER_REWIND) { | |
2152 | nvlist_free(config); | |
2153 | return (load_error); | |
2154 | } | |
2155 | ||
2156 | /* Price of rolling back is discarding txgs, including log */ | |
2157 | if (state == SPA_LOAD_RECOVER) | |
2158 | spa_set_log_state(spa, SPA_LOG_CLEAR); | |
2159 | ||
2160 | spa->spa_load_max_txg = spa->spa_last_ubsync_txg; | |
2161 | safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE; | |
2162 | min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ? | |
2163 | TXG_INITIAL : safe_rewind_txg; | |
2164 | ||
2165 | /* | |
2166 | * Continue as long as we're finding errors, we're still within | |
2167 | * the acceptable rewind range, and we're still finding uberblocks | |
2168 | */ | |
2169 | while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg && | |
2170 | spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) { | |
2171 | if (spa->spa_load_max_txg < safe_rewind_txg) | |
2172 | spa->spa_extreme_rewind = B_TRUE; | |
2173 | rewind_error = spa_load_retry(spa, state, mosconfig); | |
2174 | } | |
2175 | ||
2176 | if (config) | |
2177 | spa_rewind_data_to_nvlist(spa, config); | |
2178 | ||
2179 | spa->spa_extreme_rewind = B_FALSE; | |
2180 | spa->spa_load_max_txg = UINT64_MAX; | |
2181 | ||
2182 | if (config && (rewind_error || state != SPA_LOAD_RECOVER)) | |
2183 | spa_config_set(spa, config); | |
2184 | ||
2185 | return (state == SPA_LOAD_RECOVER ? rewind_error : load_error); | |
34dc7c2f BB |
2186 | } |
2187 | ||
2188 | /* | |
2189 | * Pool Open/Import | |
2190 | * | |
2191 | * The import case is identical to an open except that the configuration is sent | |
2192 | * down from userland, instead of grabbed from the configuration cache. For the | |
2193 | * case of an open, the pool configuration will exist in the | |
2194 | * POOL_STATE_UNINITIALIZED state. | |
2195 | * | |
2196 | * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
2197 | * the same time open the pool, without having to keep around the spa_t in some | |
2198 | * ambiguous state. | |
2199 | */ | |
2200 | static int | |
428870ff BB |
2201 | spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, |
2202 | nvlist_t **config) | |
34dc7c2f BB |
2203 | { |
2204 | spa_t *spa; | |
2205 | int error; | |
34dc7c2f BB |
2206 | int locked = B_FALSE; |
2207 | ||
2208 | *spapp = NULL; | |
2209 | ||
2210 | /* | |
2211 | * As disgusting as this is, we need to support recursive calls to this | |
2212 | * function because dsl_dir_open() is called during spa_load(), and ends | |
2213 | * up calling spa_open() again. The real fix is to figure out how to | |
2214 | * avoid dsl_dir_open() calling this in the first place. | |
2215 | */ | |
2216 | if (mutex_owner(&spa_namespace_lock) != curthread) { | |
2217 | mutex_enter(&spa_namespace_lock); | |
2218 | locked = B_TRUE; | |
2219 | } | |
2220 | ||
2221 | if ((spa = spa_lookup(pool)) == NULL) { | |
2222 | if (locked) | |
2223 | mutex_exit(&spa_namespace_lock); | |
2224 | return (ENOENT); | |
2225 | } | |
428870ff | 2226 | |
34dc7c2f | 2227 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) { |
428870ff BB |
2228 | spa_load_state_t state = SPA_LOAD_OPEN; |
2229 | zpool_rewind_policy_t policy; | |
2230 | ||
2231 | zpool_get_rewind_policy(nvpolicy ? nvpolicy : spa->spa_config, | |
2232 | &policy); | |
2233 | if (policy.zrp_request & ZPOOL_DO_REWIND) | |
2234 | state = SPA_LOAD_RECOVER; | |
34dc7c2f | 2235 | |
fb5f0bc8 | 2236 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 2237 | |
428870ff BB |
2238 | if (state != SPA_LOAD_RECOVER) |
2239 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
2240 | ||
2241 | error = spa_load_best(spa, state, B_FALSE, policy.zrp_txg, | |
2242 | policy.zrp_request); | |
34dc7c2f BB |
2243 | |
2244 | if (error == EBADF) { | |
2245 | /* | |
2246 | * If vdev_validate() returns failure (indicated by | |
2247 | * EBADF), it indicates that one of the vdevs indicates | |
2248 | * that the pool has been exported or destroyed. If | |
2249 | * this is the case, the config cache is out of sync and | |
2250 | * we should remove the pool from the namespace. | |
2251 | */ | |
34dc7c2f BB |
2252 | spa_unload(spa); |
2253 | spa_deactivate(spa); | |
b128c09f | 2254 | spa_config_sync(spa, B_TRUE, B_TRUE); |
34dc7c2f | 2255 | spa_remove(spa); |
34dc7c2f BB |
2256 | if (locked) |
2257 | mutex_exit(&spa_namespace_lock); | |
2258 | return (ENOENT); | |
2259 | } | |
2260 | ||
2261 | if (error) { | |
2262 | /* | |
2263 | * We can't open the pool, but we still have useful | |
2264 | * information: the state of each vdev after the | |
2265 | * attempted vdev_open(). Return this to the user. | |
2266 | */ | |
428870ff BB |
2267 | if (config != NULL && spa->spa_config) |
2268 | VERIFY(nvlist_dup(spa->spa_config, config, | |
2269 | KM_SLEEP) == 0); | |
34dc7c2f BB |
2270 | spa_unload(spa); |
2271 | spa_deactivate(spa); | |
428870ff | 2272 | spa->spa_last_open_failed = error; |
34dc7c2f BB |
2273 | if (locked) |
2274 | mutex_exit(&spa_namespace_lock); | |
2275 | *spapp = NULL; | |
2276 | return (error); | |
34dc7c2f | 2277 | } |
428870ff | 2278 | |
34dc7c2f BB |
2279 | } |
2280 | ||
2281 | spa_open_ref(spa, tag); | |
2282 | ||
34dc7c2f | 2283 | |
b128c09f | 2284 | if (config != NULL) |
34dc7c2f | 2285 | *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f | 2286 | |
428870ff BB |
2287 | if (locked) { |
2288 | spa->spa_last_open_failed = 0; | |
2289 | spa->spa_last_ubsync_txg = 0; | |
2290 | spa->spa_load_txg = 0; | |
2291 | mutex_exit(&spa_namespace_lock); | |
2292 | } | |
2293 | ||
2294 | *spapp = spa; | |
2295 | ||
34dc7c2f BB |
2296 | return (0); |
2297 | } | |
2298 | ||
428870ff BB |
2299 | int |
2300 | spa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy, | |
2301 | nvlist_t **config) | |
2302 | { | |
2303 | return (spa_open_common(name, spapp, tag, policy, config)); | |
2304 | } | |
2305 | ||
34dc7c2f BB |
2306 | int |
2307 | spa_open(const char *name, spa_t **spapp, void *tag) | |
2308 | { | |
428870ff | 2309 | return (spa_open_common(name, spapp, tag, NULL, NULL)); |
34dc7c2f BB |
2310 | } |
2311 | ||
2312 | /* | |
2313 | * Lookup the given spa_t, incrementing the inject count in the process, | |
2314 | * preventing it from being exported or destroyed. | |
2315 | */ | |
2316 | spa_t * | |
2317 | spa_inject_addref(char *name) | |
2318 | { | |
2319 | spa_t *spa; | |
2320 | ||
2321 | mutex_enter(&spa_namespace_lock); | |
2322 | if ((spa = spa_lookup(name)) == NULL) { | |
2323 | mutex_exit(&spa_namespace_lock); | |
2324 | return (NULL); | |
2325 | } | |
2326 | spa->spa_inject_ref++; | |
2327 | mutex_exit(&spa_namespace_lock); | |
2328 | ||
2329 | return (spa); | |
2330 | } | |
2331 | ||
2332 | void | |
2333 | spa_inject_delref(spa_t *spa) | |
2334 | { | |
2335 | mutex_enter(&spa_namespace_lock); | |
2336 | spa->spa_inject_ref--; | |
2337 | mutex_exit(&spa_namespace_lock); | |
2338 | } | |
2339 | ||
2340 | /* | |
2341 | * Add spares device information to the nvlist. | |
2342 | */ | |
2343 | static void | |
2344 | spa_add_spares(spa_t *spa, nvlist_t *config) | |
2345 | { | |
2346 | nvlist_t **spares; | |
2347 | uint_t i, nspares; | |
2348 | nvlist_t *nvroot; | |
2349 | uint64_t guid; | |
2350 | vdev_stat_t *vs; | |
2351 | uint_t vsc; | |
2352 | uint64_t pool; | |
2353 | ||
9babb374 BB |
2354 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
2355 | ||
34dc7c2f BB |
2356 | if (spa->spa_spares.sav_count == 0) |
2357 | return; | |
2358 | ||
2359 | VERIFY(nvlist_lookup_nvlist(config, | |
2360 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
2361 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, | |
2362 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
2363 | if (nspares != 0) { | |
2364 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
2365 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
2366 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
2367 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
2368 | ||
2369 | /* | |
2370 | * Go through and find any spares which have since been | |
2371 | * repurposed as an active spare. If this is the case, update | |
2372 | * their status appropriately. | |
2373 | */ | |
2374 | for (i = 0; i < nspares; i++) { | |
2375 | VERIFY(nvlist_lookup_uint64(spares[i], | |
2376 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
b128c09f BB |
2377 | if (spa_spare_exists(guid, &pool, NULL) && |
2378 | pool != 0ULL) { | |
34dc7c2f | 2379 | VERIFY(nvlist_lookup_uint64_array( |
428870ff | 2380 | spares[i], ZPOOL_CONFIG_VDEV_STATS, |
34dc7c2f BB |
2381 | (uint64_t **)&vs, &vsc) == 0); |
2382 | vs->vs_state = VDEV_STATE_CANT_OPEN; | |
2383 | vs->vs_aux = VDEV_AUX_SPARED; | |
2384 | } | |
2385 | } | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /* | |
2390 | * Add l2cache device information to the nvlist, including vdev stats. | |
2391 | */ | |
2392 | static void | |
2393 | spa_add_l2cache(spa_t *spa, nvlist_t *config) | |
2394 | { | |
2395 | nvlist_t **l2cache; | |
2396 | uint_t i, j, nl2cache; | |
2397 | nvlist_t *nvroot; | |
2398 | uint64_t guid; | |
2399 | vdev_t *vd; | |
2400 | vdev_stat_t *vs; | |
2401 | uint_t vsc; | |
2402 | ||
9babb374 BB |
2403 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER)); |
2404 | ||
34dc7c2f BB |
2405 | if (spa->spa_l2cache.sav_count == 0) |
2406 | return; | |
2407 | ||
34dc7c2f BB |
2408 | VERIFY(nvlist_lookup_nvlist(config, |
2409 | ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
2410 | VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, | |
2411 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
2412 | if (nl2cache != 0) { | |
2413 | VERIFY(nvlist_add_nvlist_array(nvroot, | |
2414 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
2415 | VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
2416 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0); | |
2417 | ||
2418 | /* | |
2419 | * Update level 2 cache device stats. | |
2420 | */ | |
2421 | ||
2422 | for (i = 0; i < nl2cache; i++) { | |
2423 | VERIFY(nvlist_lookup_uint64(l2cache[i], | |
2424 | ZPOOL_CONFIG_GUID, &guid) == 0); | |
2425 | ||
2426 | vd = NULL; | |
2427 | for (j = 0; j < spa->spa_l2cache.sav_count; j++) { | |
2428 | if (guid == | |
2429 | spa->spa_l2cache.sav_vdevs[j]->vdev_guid) { | |
2430 | vd = spa->spa_l2cache.sav_vdevs[j]; | |
2431 | break; | |
2432 | } | |
2433 | } | |
2434 | ASSERT(vd != NULL); | |
2435 | ||
2436 | VERIFY(nvlist_lookup_uint64_array(l2cache[i], | |
428870ff BB |
2437 | ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) |
2438 | == 0); | |
34dc7c2f BB |
2439 | vdev_get_stats(vd, vs); |
2440 | } | |
2441 | } | |
34dc7c2f BB |
2442 | } |
2443 | ||
2444 | int | |
2445 | spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) | |
2446 | { | |
2447 | int error; | |
2448 | spa_t *spa; | |
2449 | ||
2450 | *config = NULL; | |
428870ff | 2451 | error = spa_open_common(name, &spa, FTAG, NULL, config); |
34dc7c2f | 2452 | |
9babb374 BB |
2453 | if (spa != NULL) { |
2454 | /* | |
2455 | * This still leaves a window of inconsistency where the spares | |
2456 | * or l2cache devices could change and the config would be | |
2457 | * self-inconsistent. | |
2458 | */ | |
2459 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
34dc7c2f | 2460 | |
9babb374 | 2461 | if (*config != NULL) { |
b128c09f | 2462 | VERIFY(nvlist_add_uint64(*config, |
9babb374 BB |
2463 | ZPOOL_CONFIG_ERRCOUNT, |
2464 | spa_get_errlog_size(spa)) == 0); | |
2465 | ||
2466 | if (spa_suspended(spa)) | |
2467 | VERIFY(nvlist_add_uint64(*config, | |
2468 | ZPOOL_CONFIG_SUSPENDED, | |
2469 | spa->spa_failmode) == 0); | |
b128c09f | 2470 | |
9babb374 BB |
2471 | spa_add_spares(spa, *config); |
2472 | spa_add_l2cache(spa, *config); | |
2473 | } | |
34dc7c2f BB |
2474 | } |
2475 | ||
2476 | /* | |
2477 | * We want to get the alternate root even for faulted pools, so we cheat | |
2478 | * and call spa_lookup() directly. | |
2479 | */ | |
2480 | if (altroot) { | |
2481 | if (spa == NULL) { | |
2482 | mutex_enter(&spa_namespace_lock); | |
2483 | spa = spa_lookup(name); | |
2484 | if (spa) | |
2485 | spa_altroot(spa, altroot, buflen); | |
2486 | else | |
2487 | altroot[0] = '\0'; | |
2488 | spa = NULL; | |
2489 | mutex_exit(&spa_namespace_lock); | |
2490 | } else { | |
2491 | spa_altroot(spa, altroot, buflen); | |
2492 | } | |
2493 | } | |
2494 | ||
9babb374 BB |
2495 | if (spa != NULL) { |
2496 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
34dc7c2f | 2497 | spa_close(spa, FTAG); |
9babb374 | 2498 | } |
34dc7c2f BB |
2499 | |
2500 | return (error); | |
2501 | } | |
2502 | ||
2503 | /* | |
2504 | * Validate that the auxiliary device array is well formed. We must have an | |
2505 | * array of nvlists, each which describes a valid leaf vdev. If this is an | |
2506 | * import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be | |
2507 | * specified, as long as they are well-formed. | |
2508 | */ | |
2509 | static int | |
2510 | spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode, | |
2511 | spa_aux_vdev_t *sav, const char *config, uint64_t version, | |
2512 | vdev_labeltype_t label) | |
2513 | { | |
2514 | nvlist_t **dev; | |
2515 | uint_t i, ndev; | |
2516 | vdev_t *vd; | |
2517 | int error; | |
2518 | ||
b128c09f BB |
2519 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
2520 | ||
34dc7c2f BB |
2521 | /* |
2522 | * It's acceptable to have no devs specified. | |
2523 | */ | |
2524 | if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0) | |
2525 | return (0); | |
2526 | ||
2527 | if (ndev == 0) | |
2528 | return (EINVAL); | |
2529 | ||
2530 | /* | |
2531 | * Make sure the pool is formatted with a version that supports this | |
2532 | * device type. | |
2533 | */ | |
2534 | if (spa_version(spa) < version) | |
2535 | return (ENOTSUP); | |
2536 | ||
2537 | /* | |
2538 | * Set the pending device list so we correctly handle device in-use | |
2539 | * checking. | |
2540 | */ | |
2541 | sav->sav_pending = dev; | |
2542 | sav->sav_npending = ndev; | |
2543 | ||
2544 | for (i = 0; i < ndev; i++) { | |
2545 | if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0, | |
2546 | mode)) != 0) | |
2547 | goto out; | |
2548 | ||
2549 | if (!vd->vdev_ops->vdev_op_leaf) { | |
2550 | vdev_free(vd); | |
2551 | error = EINVAL; | |
2552 | goto out; | |
2553 | } | |
2554 | ||
2555 | /* | |
b128c09f BB |
2556 | * The L2ARC currently only supports disk devices in |
2557 | * kernel context. For user-level testing, we allow it. | |
34dc7c2f | 2558 | */ |
b128c09f | 2559 | #ifdef _KERNEL |
34dc7c2f BB |
2560 | if ((strcmp(config, ZPOOL_CONFIG_L2CACHE) == 0) && |
2561 | strcmp(vd->vdev_ops->vdev_op_type, VDEV_TYPE_DISK) != 0) { | |
2562 | error = ENOTBLK; | |
2563 | goto out; | |
2564 | } | |
b128c09f | 2565 | #endif |
34dc7c2f BB |
2566 | vd->vdev_top = vd; |
2567 | ||
2568 | if ((error = vdev_open(vd)) == 0 && | |
2569 | (error = vdev_label_init(vd, crtxg, label)) == 0) { | |
2570 | VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID, | |
2571 | vd->vdev_guid) == 0); | |
2572 | } | |
2573 | ||
2574 | vdev_free(vd); | |
2575 | ||
2576 | if (error && | |
2577 | (mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE)) | |
2578 | goto out; | |
2579 | else | |
2580 | error = 0; | |
2581 | } | |
2582 | ||
2583 | out: | |
2584 | sav->sav_pending = NULL; | |
2585 | sav->sav_npending = 0; | |
2586 | return (error); | |
2587 | } | |
2588 | ||
2589 | static int | |
2590 | spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
2591 | { | |
2592 | int error; | |
2593 | ||
b128c09f BB |
2594 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
2595 | ||
34dc7c2f BB |
2596 | if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode, |
2597 | &spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES, | |
2598 | VDEV_LABEL_SPARE)) != 0) { | |
2599 | return (error); | |
2600 | } | |
2601 | ||
2602 | return (spa_validate_aux_devs(spa, nvroot, crtxg, mode, | |
2603 | &spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE, | |
2604 | VDEV_LABEL_L2CACHE)); | |
2605 | } | |
2606 | ||
2607 | static void | |
2608 | spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs, | |
2609 | const char *config) | |
2610 | { | |
2611 | int i; | |
2612 | ||
2613 | if (sav->sav_config != NULL) { | |
2614 | nvlist_t **olddevs; | |
2615 | uint_t oldndevs; | |
2616 | nvlist_t **newdevs; | |
2617 | ||
2618 | /* | |
2619 | * Generate new dev list by concatentating with the | |
2620 | * current dev list. | |
2621 | */ | |
2622 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config, | |
2623 | &olddevs, &oldndevs) == 0); | |
2624 | ||
2625 | newdevs = kmem_alloc(sizeof (void *) * | |
2626 | (ndevs + oldndevs), KM_SLEEP); | |
2627 | for (i = 0; i < oldndevs; i++) | |
2628 | VERIFY(nvlist_dup(olddevs[i], &newdevs[i], | |
2629 | KM_SLEEP) == 0); | |
2630 | for (i = 0; i < ndevs; i++) | |
2631 | VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs], | |
2632 | KM_SLEEP) == 0); | |
2633 | ||
2634 | VERIFY(nvlist_remove(sav->sav_config, config, | |
2635 | DATA_TYPE_NVLIST_ARRAY) == 0); | |
2636 | ||
2637 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, | |
2638 | config, newdevs, ndevs + oldndevs) == 0); | |
2639 | for (i = 0; i < oldndevs + ndevs; i++) | |
2640 | nvlist_free(newdevs[i]); | |
2641 | kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *)); | |
2642 | } else { | |
2643 | /* | |
2644 | * Generate a new dev list. | |
2645 | */ | |
2646 | VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME, | |
2647 | KM_SLEEP) == 0); | |
2648 | VERIFY(nvlist_add_nvlist_array(sav->sav_config, config, | |
2649 | devs, ndevs) == 0); | |
2650 | } | |
2651 | } | |
2652 | ||
2653 | /* | |
2654 | * Stop and drop level 2 ARC devices | |
2655 | */ | |
2656 | void | |
2657 | spa_l2cache_drop(spa_t *spa) | |
2658 | { | |
2659 | vdev_t *vd; | |
2660 | int i; | |
2661 | spa_aux_vdev_t *sav = &spa->spa_l2cache; | |
2662 | ||
2663 | for (i = 0; i < sav->sav_count; i++) { | |
2664 | uint64_t pool; | |
2665 | ||
2666 | vd = sav->sav_vdevs[i]; | |
2667 | ASSERT(vd != NULL); | |
2668 | ||
fb5f0bc8 BB |
2669 | if (spa_l2cache_exists(vd->vdev_guid, &pool) && |
2670 | pool != 0ULL && l2arc_vdev_present(vd)) | |
34dc7c2f | 2671 | l2arc_remove_vdev(vd); |
34dc7c2f BB |
2672 | if (vd->vdev_isl2cache) |
2673 | spa_l2cache_remove(vd); | |
2674 | vdev_clear_stats(vd); | |
2675 | (void) vdev_close(vd); | |
2676 | } | |
2677 | } | |
2678 | ||
2679 | /* | |
2680 | * Pool Creation | |
2681 | */ | |
2682 | int | |
2683 | spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, | |
b128c09f | 2684 | const char *history_str, nvlist_t *zplprops) |
34dc7c2f BB |
2685 | { |
2686 | spa_t *spa; | |
2687 | char *altroot = NULL; | |
2688 | vdev_t *rvd; | |
2689 | dsl_pool_t *dp; | |
2690 | dmu_tx_t *tx; | |
9babb374 | 2691 | int error = 0; |
34dc7c2f BB |
2692 | uint64_t txg = TXG_INITIAL; |
2693 | nvlist_t **spares, **l2cache; | |
2694 | uint_t nspares, nl2cache; | |
428870ff | 2695 | uint64_t version, obj; |
34dc7c2f BB |
2696 | |
2697 | /* | |
2698 | * If this pool already exists, return failure. | |
2699 | */ | |
2700 | mutex_enter(&spa_namespace_lock); | |
2701 | if (spa_lookup(pool) != NULL) { | |
2702 | mutex_exit(&spa_namespace_lock); | |
2703 | return (EEXIST); | |
2704 | } | |
2705 | ||
2706 | /* | |
2707 | * Allocate a new spa_t structure. | |
2708 | */ | |
2709 | (void) nvlist_lookup_string(props, | |
2710 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
428870ff | 2711 | spa = spa_add(pool, NULL, altroot); |
fb5f0bc8 | 2712 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 2713 | |
34dc7c2f | 2714 | if (props && (error = spa_prop_validate(spa, props))) { |
34dc7c2f BB |
2715 | spa_deactivate(spa); |
2716 | spa_remove(spa); | |
b128c09f | 2717 | mutex_exit(&spa_namespace_lock); |
34dc7c2f BB |
2718 | return (error); |
2719 | } | |
2720 | ||
2721 | if (nvlist_lookup_uint64(props, zpool_prop_to_name(ZPOOL_PROP_VERSION), | |
2722 | &version) != 0) | |
2723 | version = SPA_VERSION; | |
2724 | ASSERT(version <= SPA_VERSION); | |
428870ff BB |
2725 | |
2726 | spa->spa_first_txg = txg; | |
2727 | spa->spa_uberblock.ub_txg = txg - 1; | |
34dc7c2f BB |
2728 | spa->spa_uberblock.ub_version = version; |
2729 | spa->spa_ubsync = spa->spa_uberblock; | |
2730 | ||
9babb374 BB |
2731 | /* |
2732 | * Create "The Godfather" zio to hold all async IOs | |
2733 | */ | |
2734 | spa->spa_async_zio_root = zio_root(spa, NULL, NULL, | |
2735 | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | ZIO_FLAG_GODFATHER); | |
2736 | ||
34dc7c2f BB |
2737 | /* |
2738 | * Create the root vdev. | |
2739 | */ | |
b128c09f | 2740 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
2741 | |
2742 | error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); | |
2743 | ||
2744 | ASSERT(error != 0 || rvd != NULL); | |
2745 | ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
2746 | ||
2747 | if (error == 0 && !zfs_allocatable_devs(nvroot)) | |
2748 | error = EINVAL; | |
2749 | ||
2750 | if (error == 0 && | |
2751 | (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
2752 | (error = spa_validate_aux(spa, nvroot, txg, | |
2753 | VDEV_ALLOC_ADD)) == 0) { | |
9babb374 BB |
2754 | for (int c = 0; c < rvd->vdev_children; c++) { |
2755 | vdev_metaslab_set_size(rvd->vdev_child[c]); | |
2756 | vdev_expand(rvd->vdev_child[c], txg); | |
2757 | } | |
34dc7c2f BB |
2758 | } |
2759 | ||
b128c09f | 2760 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2761 | |
2762 | if (error != 0) { | |
2763 | spa_unload(spa); | |
2764 | spa_deactivate(spa); | |
2765 | spa_remove(spa); | |
2766 | mutex_exit(&spa_namespace_lock); | |
2767 | return (error); | |
2768 | } | |
2769 | ||
2770 | /* | |
2771 | * Get the list of spares, if specified. | |
2772 | */ | |
2773 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
2774 | &spares, &nspares) == 0) { | |
2775 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME, | |
2776 | KM_SLEEP) == 0); | |
2777 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, | |
2778 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 2779 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2780 | spa_load_spares(spa); |
b128c09f | 2781 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2782 | spa->spa_spares.sav_sync = B_TRUE; |
2783 | } | |
2784 | ||
2785 | /* | |
2786 | * Get the list of level 2 cache devices, if specified. | |
2787 | */ | |
2788 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
2789 | &l2cache, &nl2cache) == 0) { | |
2790 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
2791 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2792 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, | |
2793 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 2794 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 2795 | spa_load_l2cache(spa); |
b128c09f | 2796 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
2797 | spa->spa_l2cache.sav_sync = B_TRUE; |
2798 | } | |
2799 | ||
b128c09f | 2800 | spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, txg); |
34dc7c2f BB |
2801 | spa->spa_meta_objset = dp->dp_meta_objset; |
2802 | ||
428870ff BB |
2803 | /* |
2804 | * Create DDTs (dedup tables). | |
2805 | */ | |
2806 | ddt_create(spa); | |
2807 | ||
2808 | spa_update_dspace(spa); | |
2809 | ||
34dc7c2f BB |
2810 | tx = dmu_tx_create_assigned(dp, txg); |
2811 | ||
2812 | /* | |
2813 | * Create the pool config object. | |
2814 | */ | |
2815 | spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
b128c09f | 2816 | DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE, |
34dc7c2f BB |
2817 | DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); |
2818 | ||
2819 | if (zap_add(spa->spa_meta_objset, | |
2820 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, | |
2821 | sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { | |
2822 | cmn_err(CE_PANIC, "failed to add pool config"); | |
2823 | } | |
2824 | ||
428870ff BB |
2825 | if (zap_add(spa->spa_meta_objset, |
2826 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION, | |
2827 | sizeof (uint64_t), 1, &version, tx) != 0) { | |
2828 | cmn_err(CE_PANIC, "failed to add pool version"); | |
2829 | } | |
2830 | ||
34dc7c2f BB |
2831 | /* Newly created pools with the right version are always deflated. */ |
2832 | if (version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
2833 | spa->spa_deflate = TRUE; | |
2834 | if (zap_add(spa->spa_meta_objset, | |
2835 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
2836 | sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
2837 | cmn_err(CE_PANIC, "failed to add deflate"); | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | /* | |
428870ff | 2842 | * Create the deferred-free bpobj. Turn off compression |
34dc7c2f BB |
2843 | * because sync-to-convergence takes longer if the blocksize |
2844 | * keeps changing. | |
2845 | */ | |
428870ff BB |
2846 | obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx); |
2847 | dmu_object_set_compress(spa->spa_meta_objset, obj, | |
34dc7c2f | 2848 | ZIO_COMPRESS_OFF, tx); |
34dc7c2f | 2849 | if (zap_add(spa->spa_meta_objset, |
428870ff BB |
2850 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ, |
2851 | sizeof (uint64_t), 1, &obj, tx) != 0) { | |
2852 | cmn_err(CE_PANIC, "failed to add bpobj"); | |
34dc7c2f | 2853 | } |
428870ff BB |
2854 | VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj, |
2855 | spa->spa_meta_objset, obj)); | |
34dc7c2f BB |
2856 | |
2857 | /* | |
2858 | * Create the pool's history object. | |
2859 | */ | |
2860 | if (version >= SPA_VERSION_ZPOOL_HISTORY) | |
2861 | spa_history_create_obj(spa, tx); | |
2862 | ||
2863 | /* | |
2864 | * Set pool properties. | |
2865 | */ | |
2866 | spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); | |
2867 | spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION); | |
2868 | spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE); | |
9babb374 | 2869 | spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND); |
428870ff | 2870 | |
d164b209 BB |
2871 | if (props != NULL) { |
2872 | spa_configfile_set(spa, props, B_FALSE); | |
428870ff | 2873 | spa_sync_props(spa, props, tx); |
d164b209 | 2874 | } |
34dc7c2f BB |
2875 | |
2876 | dmu_tx_commit(tx); | |
2877 | ||
2878 | spa->spa_sync_on = B_TRUE; | |
2879 | txg_sync_start(spa->spa_dsl_pool); | |
2880 | ||
2881 | /* | |
2882 | * We explicitly wait for the first transaction to complete so that our | |
2883 | * bean counters are appropriately updated. | |
2884 | */ | |
2885 | txg_wait_synced(spa->spa_dsl_pool, txg); | |
2886 | ||
b128c09f | 2887 | spa_config_sync(spa, B_FALSE, B_TRUE); |
34dc7c2f BB |
2888 | |
2889 | if (version >= SPA_VERSION_ZPOOL_HISTORY && history_str != NULL) | |
2890 | (void) spa_history_log(spa, history_str, LOG_CMD_POOL_CREATE); | |
45d1cae3 | 2891 | spa_history_log_version(spa, LOG_POOL_CREATE); |
34dc7c2f | 2892 | |
b128c09f BB |
2893 | spa->spa_minref = refcount_count(&spa->spa_refcount); |
2894 | ||
d164b209 BB |
2895 | mutex_exit(&spa_namespace_lock); |
2896 | ||
34dc7c2f BB |
2897 | return (0); |
2898 | } | |
2899 | ||
9babb374 | 2900 | #ifdef _KERNEL |
34dc7c2f | 2901 | /* |
9babb374 BB |
2902 | * Get the root pool information from the root disk, then import the root pool |
2903 | * during the system boot up time. | |
34dc7c2f | 2904 | */ |
9babb374 BB |
2905 | extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **); |
2906 | ||
2907 | static nvlist_t * | |
2908 | spa_generate_rootconf(char *devpath, char *devid, uint64_t *guid) | |
2909 | { | |
2910 | nvlist_t *config; | |
2911 | nvlist_t *nvtop, *nvroot; | |
2912 | uint64_t pgid; | |
2913 | ||
2914 | if (vdev_disk_read_rootlabel(devpath, devid, &config) != 0) | |
2915 | return (NULL); | |
2916 | ||
2917 | /* | |
2918 | * Add this top-level vdev to the child array. | |
2919 | */ | |
2920 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
2921 | &nvtop) == 0); | |
2922 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
2923 | &pgid) == 0); | |
2924 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, guid) == 0); | |
2925 | ||
2926 | /* | |
2927 | * Put this pool's top-level vdevs into a root vdev. | |
2928 | */ | |
2929 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
2930 | VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, | |
2931 | VDEV_TYPE_ROOT) == 0); | |
2932 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0); | |
2933 | VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0); | |
2934 | VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, | |
2935 | &nvtop, 1) == 0); | |
2936 | ||
2937 | /* | |
2938 | * Replace the existing vdev_tree with the new root vdev in | |
2939 | * this pool's configuration (remove the old, add the new). | |
2940 | */ | |
2941 | VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); | |
2942 | nvlist_free(nvroot); | |
2943 | return (config); | |
2944 | } | |
2945 | ||
2946 | /* | |
2947 | * Walk the vdev tree and see if we can find a device with "better" | |
2948 | * configuration. A configuration is "better" if the label on that | |
2949 | * device has a more recent txg. | |
2950 | */ | |
2951 | static void | |
2952 | spa_alt_rootvdev(vdev_t *vd, vdev_t **avd, uint64_t *txg) | |
2953 | { | |
2954 | for (int c = 0; c < vd->vdev_children; c++) | |
2955 | spa_alt_rootvdev(vd->vdev_child[c], avd, txg); | |
2956 | ||
2957 | if (vd->vdev_ops->vdev_op_leaf) { | |
2958 | nvlist_t *label; | |
2959 | uint64_t label_txg; | |
2960 | ||
2961 | if (vdev_disk_read_rootlabel(vd->vdev_physpath, vd->vdev_devid, | |
2962 | &label) != 0) | |
2963 | return; | |
2964 | ||
2965 | VERIFY(nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_TXG, | |
2966 | &label_txg) == 0); | |
2967 | ||
2968 | /* | |
2969 | * Do we have a better boot device? | |
2970 | */ | |
2971 | if (label_txg > *txg) { | |
2972 | *txg = label_txg; | |
2973 | *avd = vd; | |
2974 | } | |
2975 | nvlist_free(label); | |
2976 | } | |
2977 | } | |
2978 | ||
2979 | /* | |
2980 | * Import a root pool. | |
2981 | * | |
2982 | * For x86. devpath_list will consist of devid and/or physpath name of | |
2983 | * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a"). | |
2984 | * The GRUB "findroot" command will return the vdev we should boot. | |
2985 | * | |
2986 | * For Sparc, devpath_list consists the physpath name of the booting device | |
2987 | * no matter the rootpool is a single device pool or a mirrored pool. | |
2988 | * e.g. | |
2989 | * "/pci@1f,0/ide@d/disk@0,0:a" | |
2990 | */ | |
2991 | int | |
2992 | spa_import_rootpool(char *devpath, char *devid) | |
2993 | { | |
2994 | spa_t *spa; | |
2995 | vdev_t *rvd, *bvd, *avd = NULL; | |
2996 | nvlist_t *config, *nvtop; | |
2997 | uint64_t guid, txg; | |
2998 | char *pname; | |
2999 | int error; | |
3000 | ||
3001 | /* | |
3002 | * Read the label from the boot device and generate a configuration. | |
3003 | */ | |
428870ff BB |
3004 | config = spa_generate_rootconf(devpath, devid, &guid); |
3005 | #if defined(_OBP) && defined(_KERNEL) | |
3006 | if (config == NULL) { | |
3007 | if (strstr(devpath, "/iscsi/ssd") != NULL) { | |
3008 | /* iscsi boot */ | |
3009 | get_iscsi_bootpath_phy(devpath); | |
3010 | config = spa_generate_rootconf(devpath, devid, &guid); | |
3011 | } | |
3012 | } | |
3013 | #endif | |
3014 | if (config == NULL) { | |
9babb374 BB |
3015 | cmn_err(CE_NOTE, "Can not read the pool label from '%s'", |
3016 | devpath); | |
3017 | return (EIO); | |
3018 | } | |
3019 | ||
3020 | VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, | |
3021 | &pname) == 0); | |
3022 | VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0); | |
3023 | ||
3024 | mutex_enter(&spa_namespace_lock); | |
3025 | if ((spa = spa_lookup(pname)) != NULL) { | |
3026 | /* | |
3027 | * Remove the existing root pool from the namespace so that we | |
3028 | * can replace it with the correct config we just read in. | |
3029 | */ | |
3030 | spa_remove(spa); | |
3031 | } | |
3032 | ||
428870ff | 3033 | spa = spa_add(pname, config, NULL); |
9babb374 | 3034 | spa->spa_is_root = B_TRUE; |
45d1cae3 | 3035 | spa->spa_load_verbatim = B_TRUE; |
9babb374 BB |
3036 | |
3037 | /* | |
3038 | * Build up a vdev tree based on the boot device's label config. | |
3039 | */ | |
3040 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3041 | &nvtop) == 0); | |
3042 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3043 | error = spa_config_parse(spa, &rvd, nvtop, NULL, 0, | |
3044 | VDEV_ALLOC_ROOTPOOL); | |
3045 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3046 | if (error) { | |
3047 | mutex_exit(&spa_namespace_lock); | |
3048 | nvlist_free(config); | |
3049 | cmn_err(CE_NOTE, "Can not parse the config for pool '%s'", | |
3050 | pname); | |
3051 | return (error); | |
3052 | } | |
3053 | ||
3054 | /* | |
3055 | * Get the boot vdev. | |
3056 | */ | |
3057 | if ((bvd = vdev_lookup_by_guid(rvd, guid)) == NULL) { | |
3058 | cmn_err(CE_NOTE, "Can not find the boot vdev for guid %llu", | |
3059 | (u_longlong_t)guid); | |
3060 | error = ENOENT; | |
3061 | goto out; | |
3062 | } | |
3063 | ||
3064 | /* | |
3065 | * Determine if there is a better boot device. | |
3066 | */ | |
3067 | avd = bvd; | |
3068 | spa_alt_rootvdev(rvd, &avd, &txg); | |
3069 | if (avd != bvd) { | |
3070 | cmn_err(CE_NOTE, "The boot device is 'degraded'. Please " | |
3071 | "try booting from '%s'", avd->vdev_path); | |
3072 | error = EINVAL; | |
3073 | goto out; | |
3074 | } | |
3075 | ||
3076 | /* | |
3077 | * If the boot device is part of a spare vdev then ensure that | |
3078 | * we're booting off the active spare. | |
3079 | */ | |
3080 | if (bvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3081 | !bvd->vdev_isspare) { | |
3082 | cmn_err(CE_NOTE, "The boot device is currently spared. Please " | |
3083 | "try booting from '%s'", | |
3084 | bvd->vdev_parent->vdev_child[1]->vdev_path); | |
3085 | error = EINVAL; | |
3086 | goto out; | |
3087 | } | |
3088 | ||
9babb374 | 3089 | error = 0; |
45d1cae3 | 3090 | spa_history_log_version(spa, LOG_POOL_IMPORT); |
9babb374 BB |
3091 | out: |
3092 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); | |
3093 | vdev_free(rvd); | |
3094 | spa_config_exit(spa, SCL_ALL, FTAG); | |
3095 | mutex_exit(&spa_namespace_lock); | |
3096 | ||
3097 | nvlist_free(config); | |
3098 | return (error); | |
3099 | } | |
3100 | ||
3101 | #endif | |
3102 | ||
3103 | /* | |
3104 | * Take a pool and insert it into the namespace as if it had been loaded at | |
3105 | * boot. | |
3106 | */ | |
3107 | int | |
3108 | spa_import_verbatim(const char *pool, nvlist_t *config, nvlist_t *props) | |
3109 | { | |
3110 | spa_t *spa; | |
3111 | char *altroot = NULL; | |
3112 | ||
3113 | mutex_enter(&spa_namespace_lock); | |
3114 | if (spa_lookup(pool) != NULL) { | |
3115 | mutex_exit(&spa_namespace_lock); | |
3116 | return (EEXIST); | |
3117 | } | |
3118 | ||
3119 | (void) nvlist_lookup_string(props, | |
3120 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
428870ff | 3121 | spa = spa_add(pool, config, altroot); |
9babb374 | 3122 | |
45d1cae3 BB |
3123 | spa->spa_load_verbatim = B_TRUE; |
3124 | ||
9babb374 BB |
3125 | if (props != NULL) |
3126 | spa_configfile_set(spa, props, B_FALSE); | |
3127 | ||
3128 | spa_config_sync(spa, B_FALSE, B_TRUE); | |
3129 | ||
3130 | mutex_exit(&spa_namespace_lock); | |
45d1cae3 | 3131 | spa_history_log_version(spa, LOG_POOL_IMPORT); |
9babb374 BB |
3132 | |
3133 | return (0); | |
3134 | } | |
3135 | ||
3136 | /* | |
3137 | * Import a non-root pool into the system. | |
3138 | */ | |
3139 | int | |
3140 | spa_import(const char *pool, nvlist_t *config, nvlist_t *props) | |
34dc7c2f BB |
3141 | { |
3142 | spa_t *spa; | |
3143 | char *altroot = NULL; | |
428870ff BB |
3144 | spa_load_state_t state = SPA_LOAD_IMPORT; |
3145 | zpool_rewind_policy_t policy; | |
9babb374 | 3146 | int error; |
34dc7c2f BB |
3147 | nvlist_t *nvroot; |
3148 | nvlist_t **spares, **l2cache; | |
3149 | uint_t nspares, nl2cache; | |
34dc7c2f BB |
3150 | |
3151 | /* | |
3152 | * If a pool with this name exists, return failure. | |
3153 | */ | |
3154 | mutex_enter(&spa_namespace_lock); | |
428870ff | 3155 | if (spa_lookup(pool) != NULL) { |
9babb374 BB |
3156 | mutex_exit(&spa_namespace_lock); |
3157 | return (EEXIST); | |
34dc7c2f BB |
3158 | } |
3159 | ||
428870ff BB |
3160 | zpool_get_rewind_policy(config, &policy); |
3161 | if (policy.zrp_request & ZPOOL_DO_REWIND) | |
3162 | state = SPA_LOAD_RECOVER; | |
3163 | ||
34dc7c2f BB |
3164 | /* |
3165 | * Create and initialize the spa structure. | |
3166 | */ | |
3167 | (void) nvlist_lookup_string(props, | |
3168 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
428870ff | 3169 | spa = spa_add(pool, config, altroot); |
fb5f0bc8 | 3170 | spa_activate(spa, spa_mode_global); |
34dc7c2f | 3171 | |
9babb374 BB |
3172 | /* |
3173 | * Don't start async tasks until we know everything is healthy. | |
3174 | */ | |
3175 | spa_async_suspend(spa); | |
b128c09f | 3176 | |
34dc7c2f | 3177 | /* |
9babb374 BB |
3178 | * Pass off the heavy lifting to spa_load(). Pass TRUE for mosconfig |
3179 | * because the user-supplied config is actually the one to trust when | |
b128c09f | 3180 | * doing an import. |
34dc7c2f | 3181 | */ |
428870ff BB |
3182 | if (state != SPA_LOAD_RECOVER) |
3183 | spa->spa_last_ubsync_txg = spa->spa_load_txg = 0; | |
3184 | error = spa_load_best(spa, state, B_TRUE, policy.zrp_txg, | |
3185 | policy.zrp_request); | |
3186 | ||
3187 | /* | |
3188 | * Propagate anything learned about failing or best txgs | |
3189 | * back to caller | |
3190 | */ | |
3191 | spa_rewind_data_to_nvlist(spa, config); | |
34dc7c2f | 3192 | |
b128c09f | 3193 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3194 | /* |
9babb374 BB |
3195 | * Toss any existing sparelist, as it doesn't have any validity |
3196 | * anymore, and conflicts with spa_has_spare(). | |
34dc7c2f | 3197 | */ |
9babb374 | 3198 | if (spa->spa_spares.sav_config) { |
34dc7c2f BB |
3199 | nvlist_free(spa->spa_spares.sav_config); |
3200 | spa->spa_spares.sav_config = NULL; | |
3201 | spa_load_spares(spa); | |
3202 | } | |
9babb374 | 3203 | if (spa->spa_l2cache.sav_config) { |
34dc7c2f BB |
3204 | nvlist_free(spa->spa_l2cache.sav_config); |
3205 | spa->spa_l2cache.sav_config = NULL; | |
3206 | spa_load_l2cache(spa); | |
3207 | } | |
3208 | ||
3209 | VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
3210 | &nvroot) == 0); | |
3211 | if (error == 0) | |
9babb374 BB |
3212 | error = spa_validate_aux(spa, nvroot, -1ULL, |
3213 | VDEV_ALLOC_SPARE); | |
34dc7c2f BB |
3214 | if (error == 0) |
3215 | error = spa_validate_aux(spa, nvroot, -1ULL, | |
3216 | VDEV_ALLOC_L2CACHE); | |
b128c09f | 3217 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f | 3218 | |
d164b209 BB |
3219 | if (props != NULL) |
3220 | spa_configfile_set(spa, props, B_FALSE); | |
3221 | ||
fb5f0bc8 BB |
3222 | if (error != 0 || (props && spa_writeable(spa) && |
3223 | (error = spa_prop_set(spa, props)))) { | |
9babb374 BB |
3224 | spa_unload(spa); |
3225 | spa_deactivate(spa); | |
3226 | spa_remove(spa); | |
34dc7c2f BB |
3227 | mutex_exit(&spa_namespace_lock); |
3228 | return (error); | |
3229 | } | |
3230 | ||
3231 | /* | |
3232 | * Override any spares and level 2 cache devices as specified by | |
3233 | * the user, as these may have correct device names/devids, etc. | |
3234 | */ | |
3235 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
3236 | &spares, &nspares) == 0) { | |
3237 | if (spa->spa_spares.sav_config) | |
3238 | VERIFY(nvlist_remove(spa->spa_spares.sav_config, | |
3239 | ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
3240 | else | |
3241 | VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, | |
3242 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
3243 | VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config, | |
3244 | ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
b128c09f | 3245 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3246 | spa_load_spares(spa); |
b128c09f | 3247 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3248 | spa->spa_spares.sav_sync = B_TRUE; |
3249 | } | |
3250 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, | |
3251 | &l2cache, &nl2cache) == 0) { | |
3252 | if (spa->spa_l2cache.sav_config) | |
3253 | VERIFY(nvlist_remove(spa->spa_l2cache.sav_config, | |
3254 | ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); | |
3255 | else | |
3256 | VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config, | |
3257 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
3258 | VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config, | |
3259 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0); | |
b128c09f | 3260 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3261 | spa_load_l2cache(spa); |
b128c09f | 3262 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3263 | spa->spa_l2cache.sav_sync = B_TRUE; |
3264 | } | |
3265 | ||
428870ff BB |
3266 | /* |
3267 | * Check for any removed devices. | |
3268 | */ | |
3269 | if (spa->spa_autoreplace) { | |
3270 | spa_aux_check_removed(&spa->spa_spares); | |
3271 | spa_aux_check_removed(&spa->spa_l2cache); | |
3272 | } | |
3273 | ||
fb5f0bc8 | 3274 | if (spa_writeable(spa)) { |
b128c09f BB |
3275 | /* |
3276 | * Update the config cache to include the newly-imported pool. | |
3277 | */ | |
45d1cae3 | 3278 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
b128c09f | 3279 | } |
34dc7c2f | 3280 | |
428870ff BB |
3281 | spa_async_resume(spa); |
3282 | ||
34dc7c2f | 3283 | /* |
9babb374 BB |
3284 | * It's possible that the pool was expanded while it was exported. |
3285 | * We kick off an async task to handle this for us. | |
34dc7c2f | 3286 | */ |
9babb374 | 3287 | spa_async_request(spa, SPA_ASYNC_AUTOEXPAND); |
b128c09f | 3288 | |
9babb374 | 3289 | mutex_exit(&spa_namespace_lock); |
45d1cae3 | 3290 | spa_history_log_version(spa, LOG_POOL_IMPORT); |
b128c09f | 3291 | |
b128c09f BB |
3292 | return (0); |
3293 | } | |
3294 | ||
34dc7c2f BB |
3295 | nvlist_t * |
3296 | spa_tryimport(nvlist_t *tryconfig) | |
3297 | { | |
3298 | nvlist_t *config = NULL; | |
3299 | char *poolname; | |
3300 | spa_t *spa; | |
3301 | uint64_t state; | |
d164b209 | 3302 | int error; |
34dc7c2f BB |
3303 | |
3304 | if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
3305 | return (NULL); | |
3306 | ||
3307 | if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
3308 | return (NULL); | |
3309 | ||
3310 | /* | |
3311 | * Create and initialize the spa structure. | |
3312 | */ | |
3313 | mutex_enter(&spa_namespace_lock); | |
428870ff | 3314 | spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL); |
fb5f0bc8 | 3315 | spa_activate(spa, FREAD); |
34dc7c2f BB |
3316 | |
3317 | /* | |
3318 | * Pass off the heavy lifting to spa_load(). | |
3319 | * Pass TRUE for mosconfig because the user-supplied config | |
3320 | * is actually the one to trust when doing an import. | |
3321 | */ | |
428870ff | 3322 | error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING, B_TRUE); |
34dc7c2f BB |
3323 | |
3324 | /* | |
3325 | * If 'tryconfig' was at least parsable, return the current config. | |
3326 | */ | |
3327 | if (spa->spa_root_vdev != NULL) { | |
34dc7c2f | 3328 | config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
34dc7c2f BB |
3329 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
3330 | poolname) == 0); | |
3331 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
3332 | state) == 0); | |
3333 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, | |
3334 | spa->spa_uberblock.ub_timestamp) == 0); | |
3335 | ||
3336 | /* | |
3337 | * If the bootfs property exists on this pool then we | |
3338 | * copy it out so that external consumers can tell which | |
3339 | * pools are bootable. | |
3340 | */ | |
d164b209 | 3341 | if ((!error || error == EEXIST) && spa->spa_bootfs) { |
34dc7c2f BB |
3342 | char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP); |
3343 | ||
3344 | /* | |
3345 | * We have to play games with the name since the | |
3346 | * pool was opened as TRYIMPORT_NAME. | |
3347 | */ | |
b128c09f | 3348 | if (dsl_dsobj_to_dsname(spa_name(spa), |
34dc7c2f BB |
3349 | spa->spa_bootfs, tmpname) == 0) { |
3350 | char *cp; | |
3351 | char *dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3352 | ||
3353 | cp = strchr(tmpname, '/'); | |
3354 | if (cp == NULL) { | |
3355 | (void) strlcpy(dsname, tmpname, | |
3356 | MAXPATHLEN); | |
3357 | } else { | |
3358 | (void) snprintf(dsname, MAXPATHLEN, | |
3359 | "%s/%s", poolname, ++cp); | |
3360 | } | |
3361 | VERIFY(nvlist_add_string(config, | |
3362 | ZPOOL_CONFIG_BOOTFS, dsname) == 0); | |
3363 | kmem_free(dsname, MAXPATHLEN); | |
3364 | } | |
3365 | kmem_free(tmpname, MAXPATHLEN); | |
3366 | } | |
3367 | ||
3368 | /* | |
3369 | * Add the list of hot spares and level 2 cache devices. | |
3370 | */ | |
9babb374 | 3371 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
3372 | spa_add_spares(spa, config); |
3373 | spa_add_l2cache(spa, config); | |
9babb374 | 3374 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f BB |
3375 | } |
3376 | ||
3377 | spa_unload(spa); | |
3378 | spa_deactivate(spa); | |
3379 | spa_remove(spa); | |
3380 | mutex_exit(&spa_namespace_lock); | |
3381 | ||
3382 | return (config); | |
3383 | } | |
3384 | ||
3385 | /* | |
3386 | * Pool export/destroy | |
3387 | * | |
3388 | * The act of destroying or exporting a pool is very simple. We make sure there | |
3389 | * is no more pending I/O and any references to the pool are gone. Then, we | |
3390 | * update the pool state and sync all the labels to disk, removing the | |
fb5f0bc8 BB |
3391 | * configuration from the cache afterwards. If the 'hardforce' flag is set, then |
3392 | * we don't sync the labels or remove the configuration cache. | |
34dc7c2f BB |
3393 | */ |
3394 | static int | |
b128c09f | 3395 | spa_export_common(char *pool, int new_state, nvlist_t **oldconfig, |
fb5f0bc8 | 3396 | boolean_t force, boolean_t hardforce) |
34dc7c2f BB |
3397 | { |
3398 | spa_t *spa; | |
3399 | ||
3400 | if (oldconfig) | |
3401 | *oldconfig = NULL; | |
3402 | ||
fb5f0bc8 | 3403 | if (!(spa_mode_global & FWRITE)) |
34dc7c2f BB |
3404 | return (EROFS); |
3405 | ||
3406 | mutex_enter(&spa_namespace_lock); | |
3407 | if ((spa = spa_lookup(pool)) == NULL) { | |
3408 | mutex_exit(&spa_namespace_lock); | |
3409 | return (ENOENT); | |
3410 | } | |
3411 | ||
3412 | /* | |
3413 | * Put a hold on the pool, drop the namespace lock, stop async tasks, | |
3414 | * reacquire the namespace lock, and see if we can export. | |
3415 | */ | |
3416 | spa_open_ref(spa, FTAG); | |
3417 | mutex_exit(&spa_namespace_lock); | |
3418 | spa_async_suspend(spa); | |
3419 | mutex_enter(&spa_namespace_lock); | |
3420 | spa_close(spa, FTAG); | |
3421 | ||
3422 | /* | |
3423 | * The pool will be in core if it's openable, | |
3424 | * in which case we can modify its state. | |
3425 | */ | |
3426 | if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
3427 | /* | |
3428 | * Objsets may be open only because they're dirty, so we | |
3429 | * have to force it to sync before checking spa_refcnt. | |
3430 | */ | |
34dc7c2f BB |
3431 | txg_wait_synced(spa->spa_dsl_pool, 0); |
3432 | ||
3433 | /* | |
3434 | * A pool cannot be exported or destroyed if there are active | |
3435 | * references. If we are resetting a pool, allow references by | |
3436 | * fault injection handlers. | |
3437 | */ | |
3438 | if (!spa_refcount_zero(spa) || | |
3439 | (spa->spa_inject_ref != 0 && | |
3440 | new_state != POOL_STATE_UNINITIALIZED)) { | |
34dc7c2f BB |
3441 | spa_async_resume(spa); |
3442 | mutex_exit(&spa_namespace_lock); | |
3443 | return (EBUSY); | |
3444 | } | |
3445 | ||
b128c09f BB |
3446 | /* |
3447 | * A pool cannot be exported if it has an active shared spare. | |
3448 | * This is to prevent other pools stealing the active spare | |
3449 | * from an exported pool. At user's own will, such pool can | |
3450 | * be forcedly exported. | |
3451 | */ | |
3452 | if (!force && new_state == POOL_STATE_EXPORTED && | |
3453 | spa_has_active_shared_spare(spa)) { | |
3454 | spa_async_resume(spa); | |
3455 | mutex_exit(&spa_namespace_lock); | |
3456 | return (EXDEV); | |
3457 | } | |
34dc7c2f BB |
3458 | |
3459 | /* | |
3460 | * We want this to be reflected on every label, | |
3461 | * so mark them all dirty. spa_unload() will do the | |
3462 | * final sync that pushes these changes out. | |
3463 | */ | |
fb5f0bc8 | 3464 | if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) { |
b128c09f | 3465 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f | 3466 | spa->spa_state = new_state; |
428870ff BB |
3467 | spa->spa_final_txg = spa_last_synced_txg(spa) + |
3468 | TXG_DEFER_SIZE + 1; | |
34dc7c2f | 3469 | vdev_config_dirty(spa->spa_root_vdev); |
b128c09f | 3470 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
3471 | } |
3472 | } | |
3473 | ||
3474 | spa_event_notify(spa, NULL, ESC_ZFS_POOL_DESTROY); | |
3475 | ||
3476 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
3477 | spa_unload(spa); | |
3478 | spa_deactivate(spa); | |
3479 | } | |
3480 | ||
3481 | if (oldconfig && spa->spa_config) | |
3482 | VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); | |
3483 | ||
3484 | if (new_state != POOL_STATE_UNINITIALIZED) { | |
fb5f0bc8 BB |
3485 | if (!hardforce) |
3486 | spa_config_sync(spa, B_TRUE, B_TRUE); | |
34dc7c2f | 3487 | spa_remove(spa); |
34dc7c2f BB |
3488 | } |
3489 | mutex_exit(&spa_namespace_lock); | |
3490 | ||
3491 | return (0); | |
3492 | } | |
3493 | ||
3494 | /* | |
3495 | * Destroy a storage pool. | |
3496 | */ | |
3497 | int | |
3498 | spa_destroy(char *pool) | |
3499 | { | |
fb5f0bc8 BB |
3500 | return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL, |
3501 | B_FALSE, B_FALSE)); | |
34dc7c2f BB |
3502 | } |
3503 | ||
3504 | /* | |
3505 | * Export a storage pool. | |
3506 | */ | |
3507 | int | |
fb5f0bc8 BB |
3508 | spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
3509 | boolean_t hardforce) | |
34dc7c2f | 3510 | { |
fb5f0bc8 BB |
3511 | return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig, |
3512 | force, hardforce)); | |
34dc7c2f BB |
3513 | } |
3514 | ||
3515 | /* | |
3516 | * Similar to spa_export(), this unloads the spa_t without actually removing it | |
3517 | * from the namespace in any way. | |
3518 | */ | |
3519 | int | |
3520 | spa_reset(char *pool) | |
3521 | { | |
b128c09f | 3522 | return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL, |
fb5f0bc8 | 3523 | B_FALSE, B_FALSE)); |
34dc7c2f BB |
3524 | } |
3525 | ||
34dc7c2f BB |
3526 | /* |
3527 | * ========================================================================== | |
3528 | * Device manipulation | |
3529 | * ========================================================================== | |
3530 | */ | |
3531 | ||
3532 | /* | |
3533 | * Add a device to a storage pool. | |
3534 | */ | |
3535 | int | |
3536 | spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
3537 | { | |
428870ff | 3538 | uint64_t txg, id; |
fb5f0bc8 | 3539 | int error; |
34dc7c2f BB |
3540 | vdev_t *rvd = spa->spa_root_vdev; |
3541 | vdev_t *vd, *tvd; | |
3542 | nvlist_t **spares, **l2cache; | |
3543 | uint_t nspares, nl2cache; | |
3544 | ||
3545 | txg = spa_vdev_enter(spa); | |
3546 | ||
3547 | if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, | |
3548 | VDEV_ALLOC_ADD)) != 0) | |
3549 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
3550 | ||
b128c09f | 3551 | spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */ |
34dc7c2f BB |
3552 | |
3553 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares, | |
3554 | &nspares) != 0) | |
3555 | nspares = 0; | |
3556 | ||
3557 | if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache, | |
3558 | &nl2cache) != 0) | |
3559 | nl2cache = 0; | |
3560 | ||
b128c09f | 3561 | if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0) |
34dc7c2f | 3562 | return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
34dc7c2f | 3563 | |
b128c09f BB |
3564 | if (vd->vdev_children != 0 && |
3565 | (error = vdev_create(vd, txg, B_FALSE)) != 0) | |
3566 | return (spa_vdev_exit(spa, vd, txg, error)); | |
34dc7c2f BB |
3567 | |
3568 | /* | |
3569 | * We must validate the spares and l2cache devices after checking the | |
3570 | * children. Otherwise, vdev_inuse() will blindly overwrite the spare. | |
3571 | */ | |
b128c09f | 3572 | if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0) |
34dc7c2f | 3573 | return (spa_vdev_exit(spa, vd, txg, error)); |
34dc7c2f BB |
3574 | |
3575 | /* | |
3576 | * Transfer each new top-level vdev from vd to rvd. | |
3577 | */ | |
fb5f0bc8 | 3578 | for (int c = 0; c < vd->vdev_children; c++) { |
428870ff BB |
3579 | |
3580 | /* | |
3581 | * Set the vdev id to the first hole, if one exists. | |
3582 | */ | |
3583 | for (id = 0; id < rvd->vdev_children; id++) { | |
3584 | if (rvd->vdev_child[id]->vdev_ishole) { | |
3585 | vdev_free(rvd->vdev_child[id]); | |
3586 | break; | |
3587 | } | |
3588 | } | |
34dc7c2f BB |
3589 | tvd = vd->vdev_child[c]; |
3590 | vdev_remove_child(vd, tvd); | |
428870ff | 3591 | tvd->vdev_id = id; |
34dc7c2f BB |
3592 | vdev_add_child(rvd, tvd); |
3593 | vdev_config_dirty(tvd); | |
3594 | } | |
3595 | ||
3596 | if (nspares != 0) { | |
3597 | spa_set_aux_vdevs(&spa->spa_spares, spares, nspares, | |
3598 | ZPOOL_CONFIG_SPARES); | |
3599 | spa_load_spares(spa); | |
3600 | spa->spa_spares.sav_sync = B_TRUE; | |
3601 | } | |
3602 | ||
3603 | if (nl2cache != 0) { | |
3604 | spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache, | |
3605 | ZPOOL_CONFIG_L2CACHE); | |
3606 | spa_load_l2cache(spa); | |
3607 | spa->spa_l2cache.sav_sync = B_TRUE; | |
3608 | } | |
3609 | ||
3610 | /* | |
3611 | * We have to be careful when adding new vdevs to an existing pool. | |
3612 | * If other threads start allocating from these vdevs before we | |
3613 | * sync the config cache, and we lose power, then upon reboot we may | |
3614 | * fail to open the pool because there are DVAs that the config cache | |
3615 | * can't translate. Therefore, we first add the vdevs without | |
3616 | * initializing metaslabs; sync the config cache (via spa_vdev_exit()); | |
3617 | * and then let spa_config_update() initialize the new metaslabs. | |
3618 | * | |
3619 | * spa_load() checks for added-but-not-initialized vdevs, so that | |
3620 | * if we lose power at any point in this sequence, the remaining | |
3621 | * steps will be completed the next time we load the pool. | |
3622 | */ | |
3623 | (void) spa_vdev_exit(spa, vd, txg, 0); | |
3624 | ||
3625 | mutex_enter(&spa_namespace_lock); | |
3626 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); | |
3627 | mutex_exit(&spa_namespace_lock); | |
3628 | ||
3629 | return (0); | |
3630 | } | |
3631 | ||
3632 | /* | |
3633 | * Attach a device to a mirror. The arguments are the path to any device | |
3634 | * in the mirror, and the nvroot for the new device. If the path specifies | |
3635 | * a device that is not mirrored, we automatically insert the mirror vdev. | |
3636 | * | |
3637 | * If 'replacing' is specified, the new device is intended to replace the | |
3638 | * existing device; in this case the two devices are made into their own | |
3639 | * mirror using the 'replacing' vdev, which is functionally identical to | |
3640 | * the mirror vdev (it actually reuses all the same ops) but has a few | |
3641 | * extra rules: you can't attach to it after it's been created, and upon | |
3642 | * completion of resilvering, the first disk (the one being replaced) | |
3643 | * is automatically detached. | |
3644 | */ | |
3645 | int | |
3646 | spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) | |
3647 | { | |
428870ff | 3648 | uint64_t txg, dtl_max_txg; |
34dc7c2f BB |
3649 | vdev_t *rvd = spa->spa_root_vdev; |
3650 | vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
3651 | vdev_ops_t *pvops; | |
b128c09f BB |
3652 | char *oldvdpath, *newvdpath; |
3653 | int newvd_isspare; | |
3654 | int error; | |
34dc7c2f BB |
3655 | |
3656 | txg = spa_vdev_enter(spa); | |
3657 | ||
b128c09f | 3658 | oldvd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
3659 | |
3660 | if (oldvd == NULL) | |
3661 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
3662 | ||
3663 | if (!oldvd->vdev_ops->vdev_op_leaf) | |
3664 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3665 | ||
3666 | pvd = oldvd->vdev_parent; | |
3667 | ||
3668 | if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, | |
3669 | VDEV_ALLOC_ADD)) != 0) | |
3670 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
3671 | ||
3672 | if (newrootvd->vdev_children != 1) | |
3673 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
3674 | ||
3675 | newvd = newrootvd->vdev_child[0]; | |
3676 | ||
3677 | if (!newvd->vdev_ops->vdev_op_leaf) | |
3678 | return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
3679 | ||
3680 | if ((error = vdev_create(newrootvd, txg, replacing)) != 0) | |
3681 | return (spa_vdev_exit(spa, newrootvd, txg, error)); | |
3682 | ||
3683 | /* | |
3684 | * Spares can't replace logs | |
3685 | */ | |
b128c09f | 3686 | if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare) |
34dc7c2f BB |
3687 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
3688 | ||
3689 | if (!replacing) { | |
3690 | /* | |
3691 | * For attach, the only allowable parent is a mirror or the root | |
3692 | * vdev. | |
3693 | */ | |
3694 | if (pvd->vdev_ops != &vdev_mirror_ops && | |
3695 | pvd->vdev_ops != &vdev_root_ops) | |
3696 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
3697 | ||
3698 | pvops = &vdev_mirror_ops; | |
3699 | } else { | |
3700 | /* | |
3701 | * Active hot spares can only be replaced by inactive hot | |
3702 | * spares. | |
3703 | */ | |
3704 | if (pvd->vdev_ops == &vdev_spare_ops && | |
3705 | pvd->vdev_child[1] == oldvd && | |
3706 | !spa_has_spare(spa, newvd->vdev_guid)) | |
3707 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
3708 | ||
3709 | /* | |
3710 | * If the source is a hot spare, and the parent isn't already a | |
3711 | * spare, then we want to create a new hot spare. Otherwise, we | |
3712 | * want to create a replacing vdev. The user is not allowed to | |
3713 | * attach to a spared vdev child unless the 'isspare' state is | |
3714 | * the same (spare replaces spare, non-spare replaces | |
3715 | * non-spare). | |
3716 | */ | |
3717 | if (pvd->vdev_ops == &vdev_replacing_ops) | |
3718 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
3719 | else if (pvd->vdev_ops == &vdev_spare_ops && | |
3720 | newvd->vdev_isspare != oldvd->vdev_isspare) | |
3721 | return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
3722 | else if (pvd->vdev_ops != &vdev_spare_ops && | |
3723 | newvd->vdev_isspare) | |
3724 | pvops = &vdev_spare_ops; | |
3725 | else | |
3726 | pvops = &vdev_replacing_ops; | |
3727 | } | |
3728 | ||
3729 | /* | |
9babb374 | 3730 | * Make sure the new device is big enough. |
34dc7c2f | 3731 | */ |
9babb374 | 3732 | if (newvd->vdev_asize < vdev_get_min_asize(oldvd)) |
34dc7c2f BB |
3733 | return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
3734 | ||
3735 | /* | |
3736 | * The new device cannot have a higher alignment requirement | |
3737 | * than the top-level vdev. | |
3738 | */ | |
3739 | if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
3740 | return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); | |
3741 | ||
3742 | /* | |
3743 | * If this is an in-place replacement, update oldvd's path and devid | |
3744 | * to make it distinguishable from newvd, and unopenable from now on. | |
3745 | */ | |
3746 | if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
3747 | spa_strfree(oldvd->vdev_path); | |
3748 | oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
3749 | KM_SLEEP); | |
3750 | (void) sprintf(oldvd->vdev_path, "%s/%s", | |
3751 | newvd->vdev_path, "old"); | |
3752 | if (oldvd->vdev_devid != NULL) { | |
3753 | spa_strfree(oldvd->vdev_devid); | |
3754 | oldvd->vdev_devid = NULL; | |
3755 | } | |
3756 | } | |
3757 | ||
3758 | /* | |
3759 | * If the parent is not a mirror, or if we're replacing, insert the new | |
3760 | * mirror/replacing/spare vdev above oldvd. | |
3761 | */ | |
3762 | if (pvd->vdev_ops != pvops) | |
3763 | pvd = vdev_add_parent(oldvd, pvops); | |
3764 | ||
3765 | ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
3766 | ASSERT(pvd->vdev_ops == pvops); | |
3767 | ASSERT(oldvd->vdev_parent == pvd); | |
3768 | ||
3769 | /* | |
3770 | * Extract the new device from its root and add it to pvd. | |
3771 | */ | |
3772 | vdev_remove_child(newrootvd, newvd); | |
3773 | newvd->vdev_id = pvd->vdev_children; | |
428870ff | 3774 | newvd->vdev_crtxg = oldvd->vdev_crtxg; |
34dc7c2f BB |
3775 | vdev_add_child(pvd, newvd); |
3776 | ||
34dc7c2f BB |
3777 | tvd = newvd->vdev_top; |
3778 | ASSERT(pvd->vdev_top == tvd); | |
3779 | ASSERT(tvd->vdev_parent == rvd); | |
3780 | ||
3781 | vdev_config_dirty(tvd); | |
3782 | ||
3783 | /* | |
428870ff BB |
3784 | * Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account |
3785 | * for any dmu_sync-ed blocks. It will propagate upward when | |
3786 | * spa_vdev_exit() calls vdev_dtl_reassess(). | |
34dc7c2f | 3787 | */ |
428870ff | 3788 | dtl_max_txg = txg + TXG_CONCURRENT_STATES; |
34dc7c2f | 3789 | |
428870ff BB |
3790 | vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL, |
3791 | dtl_max_txg - TXG_INITIAL); | |
34dc7c2f | 3792 | |
9babb374 | 3793 | if (newvd->vdev_isspare) { |
34dc7c2f | 3794 | spa_spare_activate(newvd); |
9babb374 BB |
3795 | spa_event_notify(spa, newvd, ESC_ZFS_VDEV_SPARE); |
3796 | } | |
3797 | ||
b128c09f BB |
3798 | oldvdpath = spa_strdup(oldvd->vdev_path); |
3799 | newvdpath = spa_strdup(newvd->vdev_path); | |
3800 | newvd_isspare = newvd->vdev_isspare; | |
34dc7c2f BB |
3801 | |
3802 | /* | |
3803 | * Mark newvd's DTL dirty in this txg. | |
3804 | */ | |
3805 | vdev_dirty(tvd, VDD_DTL, newvd, txg); | |
3806 | ||
428870ff BB |
3807 | /* |
3808 | * Restart the resilver | |
3809 | */ | |
3810 | dsl_resilver_restart(spa->spa_dsl_pool, dtl_max_txg); | |
3811 | ||
3812 | /* | |
3813 | * Commit the config | |
3814 | */ | |
3815 | (void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0); | |
34dc7c2f | 3816 | |
428870ff BB |
3817 | spa_history_log_internal(LOG_POOL_VDEV_ATTACH, spa, NULL, |
3818 | "%s vdev=%s %s vdev=%s", | |
45d1cae3 BB |
3819 | replacing && newvd_isspare ? "spare in" : |
3820 | replacing ? "replace" : "attach", newvdpath, | |
3821 | replacing ? "for" : "to", oldvdpath); | |
b128c09f BB |
3822 | |
3823 | spa_strfree(oldvdpath); | |
3824 | spa_strfree(newvdpath); | |
3825 | ||
34dc7c2f BB |
3826 | return (0); |
3827 | } | |
3828 | ||
3829 | /* | |
3830 | * Detach a device from a mirror or replacing vdev. | |
3831 | * If 'replace_done' is specified, only detach if the parent | |
3832 | * is a replacing vdev. | |
3833 | */ | |
3834 | int | |
fb5f0bc8 | 3835 | spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done) |
34dc7c2f BB |
3836 | { |
3837 | uint64_t txg; | |
fb5f0bc8 | 3838 | int error; |
34dc7c2f BB |
3839 | vdev_t *rvd = spa->spa_root_vdev; |
3840 | vdev_t *vd, *pvd, *cvd, *tvd; | |
3841 | boolean_t unspare = B_FALSE; | |
3842 | uint64_t unspare_guid; | |
b128c09f | 3843 | size_t len; |
428870ff | 3844 | char *vdpath; |
34dc7c2f BB |
3845 | |
3846 | txg = spa_vdev_enter(spa); | |
3847 | ||
b128c09f | 3848 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
3849 | |
3850 | if (vd == NULL) | |
3851 | return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
3852 | ||
3853 | if (!vd->vdev_ops->vdev_op_leaf) | |
3854 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3855 | ||
3856 | pvd = vd->vdev_parent; | |
3857 | ||
fb5f0bc8 BB |
3858 | /* |
3859 | * If the parent/child relationship is not as expected, don't do it. | |
3860 | * Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing | |
3861 | * vdev that's replacing B with C. The user's intent in replacing | |
3862 | * is to go from M(A,B) to M(A,C). If the user decides to cancel | |
3863 | * the replace by detaching C, the expected behavior is to end up | |
3864 | * M(A,B). But suppose that right after deciding to detach C, | |
3865 | * the replacement of B completes. We would have M(A,C), and then | |
3866 | * ask to detach C, which would leave us with just A -- not what | |
3867 | * the user wanted. To prevent this, we make sure that the | |
3868 | * parent/child relationship hasn't changed -- in this example, | |
3869 | * that C's parent is still the replacing vdev R. | |
3870 | */ | |
3871 | if (pvd->vdev_guid != pguid && pguid != 0) | |
3872 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
3873 | ||
34dc7c2f BB |
3874 | /* |
3875 | * If replace_done is specified, only remove this device if it's | |
3876 | * the first child of a replacing vdev. For the 'spare' vdev, either | |
3877 | * disk can be removed. | |
3878 | */ | |
3879 | if (replace_done) { | |
3880 | if (pvd->vdev_ops == &vdev_replacing_ops) { | |
3881 | if (vd->vdev_id != 0) | |
3882 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3883 | } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
3884 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3885 | } | |
3886 | } | |
3887 | ||
3888 | ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
3889 | spa_version(spa) >= SPA_VERSION_SPARES); | |
3890 | ||
3891 | /* | |
3892 | * Only mirror, replacing, and spare vdevs support detach. | |
3893 | */ | |
3894 | if (pvd->vdev_ops != &vdev_replacing_ops && | |
3895 | pvd->vdev_ops != &vdev_mirror_ops && | |
3896 | pvd->vdev_ops != &vdev_spare_ops) | |
3897 | return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
3898 | ||
3899 | /* | |
fb5f0bc8 BB |
3900 | * If this device has the only valid copy of some data, |
3901 | * we cannot safely detach it. | |
34dc7c2f | 3902 | */ |
fb5f0bc8 | 3903 | if (vdev_dtl_required(vd)) |
34dc7c2f BB |
3904 | return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
3905 | ||
fb5f0bc8 | 3906 | ASSERT(pvd->vdev_children >= 2); |
34dc7c2f | 3907 | |
b128c09f BB |
3908 | /* |
3909 | * If we are detaching the second disk from a replacing vdev, then | |
3910 | * check to see if we changed the original vdev's path to have "/old" | |
3911 | * at the end in spa_vdev_attach(). If so, undo that change now. | |
3912 | */ | |
3913 | if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id == 1 && | |
3914 | pvd->vdev_child[0]->vdev_path != NULL && | |
3915 | pvd->vdev_child[1]->vdev_path != NULL) { | |
3916 | ASSERT(pvd->vdev_child[1] == vd); | |
3917 | cvd = pvd->vdev_child[0]; | |
3918 | len = strlen(vd->vdev_path); | |
3919 | if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 && | |
3920 | strcmp(cvd->vdev_path + len, "/old") == 0) { | |
3921 | spa_strfree(cvd->vdev_path); | |
3922 | cvd->vdev_path = spa_strdup(vd->vdev_path); | |
3923 | } | |
3924 | } | |
3925 | ||
34dc7c2f BB |
3926 | /* |
3927 | * If we are detaching the original disk from a spare, then it implies | |
3928 | * that the spare should become a real disk, and be removed from the | |
3929 | * active spare list for the pool. | |
3930 | */ | |
3931 | if (pvd->vdev_ops == &vdev_spare_ops && | |
fb5f0bc8 | 3932 | vd->vdev_id == 0 && pvd->vdev_child[1]->vdev_isspare) |
34dc7c2f BB |
3933 | unspare = B_TRUE; |
3934 | ||
3935 | /* | |
3936 | * Erase the disk labels so the disk can be used for other things. | |
3937 | * This must be done after all other error cases are handled, | |
3938 | * but before we disembowel vd (so we can still do I/O to it). | |
3939 | * But if we can't do it, don't treat the error as fatal -- | |
3940 | * it may be that the unwritability of the disk is the reason | |
3941 | * it's being detached! | |
3942 | */ | |
3943 | error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
3944 | ||
3945 | /* | |
3946 | * Remove vd from its parent and compact the parent's children. | |
3947 | */ | |
3948 | vdev_remove_child(pvd, vd); | |
3949 | vdev_compact_children(pvd); | |
3950 | ||
3951 | /* | |
3952 | * Remember one of the remaining children so we can get tvd below. | |
3953 | */ | |
3954 | cvd = pvd->vdev_child[0]; | |
3955 | ||
3956 | /* | |
3957 | * If we need to remove the remaining child from the list of hot spares, | |
fb5f0bc8 BB |
3958 | * do it now, marking the vdev as no longer a spare in the process. |
3959 | * We must do this before vdev_remove_parent(), because that can | |
3960 | * change the GUID if it creates a new toplevel GUID. For a similar | |
3961 | * reason, we must remove the spare now, in the same txg as the detach; | |
3962 | * otherwise someone could attach a new sibling, change the GUID, and | |
3963 | * the subsequent attempt to spa_vdev_remove(unspare_guid) would fail. | |
34dc7c2f BB |
3964 | */ |
3965 | if (unspare) { | |
3966 | ASSERT(cvd->vdev_isspare); | |
3967 | spa_spare_remove(cvd); | |
3968 | unspare_guid = cvd->vdev_guid; | |
fb5f0bc8 | 3969 | (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); |
34dc7c2f BB |
3970 | } |
3971 | ||
428870ff BB |
3972 | /* |
3973 | * If the parent mirror/replacing vdev only has one child, | |
3974 | * the parent is no longer needed. Remove it from the tree. | |
3975 | */ | |
3976 | if (pvd->vdev_children == 1) | |
3977 | vdev_remove_parent(cvd); | |
3978 | ||
3979 | /* | |
3980 | * We don't set tvd until now because the parent we just removed | |
3981 | * may have been the previous top-level vdev. | |
3982 | */ | |
3983 | tvd = cvd->vdev_top; | |
3984 | ASSERT(tvd->vdev_parent == rvd); | |
3985 | ||
3986 | /* | |
3987 | * Reevaluate the parent vdev state. | |
3988 | */ | |
3989 | vdev_propagate_state(cvd); | |
3990 | ||
3991 | /* | |
3992 | * If the 'autoexpand' property is set on the pool then automatically | |
3993 | * try to expand the size of the pool. For example if the device we | |
3994 | * just detached was smaller than the others, it may be possible to | |
3995 | * add metaslabs (i.e. grow the pool). We need to reopen the vdev | |
3996 | * first so that we can obtain the updated sizes of the leaf vdevs. | |
3997 | */ | |
3998 | if (spa->spa_autoexpand) { | |
3999 | vdev_reopen(tvd); | |
4000 | vdev_expand(tvd, txg); | |
4001 | } | |
4002 | ||
4003 | vdev_config_dirty(tvd); | |
4004 | ||
4005 | /* | |
4006 | * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that | |
4007 | * vd->vdev_detached is set and free vd's DTL object in syncing context. | |
4008 | * But first make sure we're not on any *other* txg's DTL list, to | |
4009 | * prevent vd from being accessed after it's freed. | |
4010 | */ | |
4011 | vdpath = spa_strdup(vd->vdev_path); | |
4012 | for (int t = 0; t < TXG_SIZE; t++) | |
4013 | (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); | |
4014 | vd->vdev_detached = B_TRUE; | |
4015 | vdev_dirty(tvd, VDD_DTL, vd, txg); | |
4016 | ||
4017 | spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE); | |
4018 | ||
4019 | error = spa_vdev_exit(spa, vd, txg, 0); | |
4020 | ||
4021 | spa_history_log_internal(LOG_POOL_VDEV_DETACH, spa, NULL, | |
4022 | "vdev=%s", vdpath); | |
4023 | spa_strfree(vdpath); | |
4024 | ||
4025 | /* | |
4026 | * If this was the removal of the original device in a hot spare vdev, | |
4027 | * then we want to go through and remove the device from the hot spare | |
4028 | * list of every other pool. | |
4029 | */ | |
4030 | if (unspare) { | |
4031 | spa_t *myspa = spa; | |
4032 | spa = NULL; | |
4033 | mutex_enter(&spa_namespace_lock); | |
4034 | while ((spa = spa_next(spa)) != NULL) { | |
4035 | if (spa->spa_state != POOL_STATE_ACTIVE) | |
4036 | continue; | |
4037 | if (spa == myspa) | |
4038 | continue; | |
4039 | spa_open_ref(spa, FTAG); | |
4040 | mutex_exit(&spa_namespace_lock); | |
4041 | (void) spa_vdev_remove(spa, unspare_guid, | |
4042 | B_TRUE); | |
4043 | mutex_enter(&spa_namespace_lock); | |
4044 | spa_close(spa, FTAG); | |
4045 | } | |
4046 | mutex_exit(&spa_namespace_lock); | |
4047 | } | |
4048 | ||
4049 | return (error); | |
4050 | } | |
4051 | ||
4052 | /* | |
4053 | * Split a set of devices from their mirrors, and create a new pool from them. | |
4054 | */ | |
4055 | int | |
4056 | spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, | |
4057 | nvlist_t *props, boolean_t exp) | |
4058 | { | |
4059 | int error = 0; | |
4060 | uint64_t txg, *glist; | |
4061 | spa_t *newspa; | |
4062 | uint_t c, children, lastlog; | |
4063 | nvlist_t **child, *nvl, *tmp; | |
4064 | dmu_tx_t *tx; | |
4065 | char *altroot = NULL; | |
4066 | vdev_t *rvd, **vml = NULL; /* vdev modify list */ | |
4067 | boolean_t activate_slog; | |
4068 | ||
4069 | if (!spa_writeable(spa)) | |
4070 | return (EROFS); | |
4071 | ||
4072 | txg = spa_vdev_enter(spa); | |
4073 | ||
4074 | /* clear the log and flush everything up to now */ | |
4075 | activate_slog = spa_passivate_log(spa); | |
4076 | (void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
4077 | error = spa_offline_log(spa); | |
4078 | txg = spa_vdev_config_enter(spa); | |
4079 | ||
4080 | if (activate_slog) | |
4081 | spa_activate_log(spa); | |
4082 | ||
4083 | if (error != 0) | |
4084 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4085 | ||
4086 | /* check new spa name before going any further */ | |
4087 | if (spa_lookup(newname) != NULL) | |
4088 | return (spa_vdev_exit(spa, NULL, txg, EEXIST)); | |
4089 | ||
4090 | /* | |
4091 | * scan through all the children to ensure they're all mirrors | |
4092 | */ | |
4093 | if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 || | |
4094 | nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child, | |
4095 | &children) != 0) | |
4096 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
4097 | ||
4098 | /* first, check to ensure we've got the right child count */ | |
4099 | rvd = spa->spa_root_vdev; | |
4100 | lastlog = 0; | |
4101 | for (c = 0; c < rvd->vdev_children; c++) { | |
4102 | vdev_t *vd = rvd->vdev_child[c]; | |
4103 | ||
4104 | /* don't count the holes & logs as children */ | |
4105 | if (vd->vdev_islog || vd->vdev_ishole) { | |
4106 | if (lastlog == 0) | |
4107 | lastlog = c; | |
4108 | continue; | |
4109 | } | |
4110 | ||
4111 | lastlog = 0; | |
4112 | } | |
4113 | if (children != (lastlog != 0 ? lastlog : rvd->vdev_children)) | |
4114 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
4115 | ||
4116 | /* next, ensure no spare or cache devices are part of the split */ | |
4117 | if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 || | |
4118 | nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0) | |
4119 | return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
4120 | ||
4121 | vml = kmem_zalloc(children * sizeof (vdev_t *), KM_SLEEP); | |
4122 | glist = kmem_zalloc(children * sizeof (uint64_t), KM_SLEEP); | |
4123 | ||
4124 | /* then, loop over each vdev and validate it */ | |
4125 | for (c = 0; c < children; c++) { | |
4126 | uint64_t is_hole = 0; | |
4127 | ||
4128 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, | |
4129 | &is_hole); | |
4130 | ||
4131 | if (is_hole != 0) { | |
4132 | if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole || | |
4133 | spa->spa_root_vdev->vdev_child[c]->vdev_islog) { | |
4134 | continue; | |
4135 | } else { | |
4136 | error = EINVAL; | |
4137 | break; | |
4138 | } | |
4139 | } | |
4140 | ||
4141 | /* which disk is going to be split? */ | |
4142 | if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID, | |
4143 | &glist[c]) != 0) { | |
4144 | error = EINVAL; | |
4145 | break; | |
4146 | } | |
4147 | ||
4148 | /* look it up in the spa */ | |
4149 | vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE); | |
4150 | if (vml[c] == NULL) { | |
4151 | error = ENODEV; | |
4152 | break; | |
4153 | } | |
4154 | ||
4155 | /* make sure there's nothing stopping the split */ | |
4156 | if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops || | |
4157 | vml[c]->vdev_islog || | |
4158 | vml[c]->vdev_ishole || | |
4159 | vml[c]->vdev_isspare || | |
4160 | vml[c]->vdev_isl2cache || | |
4161 | !vdev_writeable(vml[c]) || | |
4162 | vml[c]->vdev_children != 0 || | |
4163 | vml[c]->vdev_state != VDEV_STATE_HEALTHY || | |
4164 | c != spa->spa_root_vdev->vdev_child[c]->vdev_id) { | |
4165 | error = EINVAL; | |
4166 | break; | |
4167 | } | |
4168 | ||
4169 | if (vdev_dtl_required(vml[c])) { | |
4170 | error = EBUSY; | |
4171 | break; | |
4172 | } | |
4173 | ||
4174 | /* we need certain info from the top level */ | |
4175 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY, | |
4176 | vml[c]->vdev_top->vdev_ms_array) == 0); | |
4177 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT, | |
4178 | vml[c]->vdev_top->vdev_ms_shift) == 0); | |
4179 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE, | |
4180 | vml[c]->vdev_top->vdev_asize) == 0); | |
4181 | VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT, | |
4182 | vml[c]->vdev_top->vdev_ashift) == 0); | |
4183 | } | |
4184 | ||
4185 | if (error != 0) { | |
4186 | kmem_free(vml, children * sizeof (vdev_t *)); | |
4187 | kmem_free(glist, children * sizeof (uint64_t)); | |
4188 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4189 | } | |
4190 | ||
4191 | /* stop writers from using the disks */ | |
4192 | for (c = 0; c < children; c++) { | |
4193 | if (vml[c] != NULL) | |
4194 | vml[c]->vdev_offline = B_TRUE; | |
4195 | } | |
4196 | vdev_reopen(spa->spa_root_vdev); | |
34dc7c2f BB |
4197 | |
4198 | /* | |
428870ff BB |
4199 | * Temporarily record the splitting vdevs in the spa config. This |
4200 | * will disappear once the config is regenerated. | |
34dc7c2f | 4201 | */ |
428870ff BB |
4202 | VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); |
4203 | VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST, | |
4204 | glist, children) == 0); | |
4205 | kmem_free(glist, children * sizeof (uint64_t)); | |
34dc7c2f | 4206 | |
428870ff BB |
4207 | mutex_enter(&spa->spa_props_lock); |
4208 | VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT, | |
4209 | nvl) == 0); | |
4210 | mutex_exit(&spa->spa_props_lock); | |
4211 | spa->spa_config_splitting = nvl; | |
4212 | vdev_config_dirty(spa->spa_root_vdev); | |
4213 | ||
4214 | /* configure and create the new pool */ | |
4215 | VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0); | |
4216 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
4217 | exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0); | |
4218 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, | |
4219 | spa_version(spa)) == 0); | |
4220 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, | |
4221 | spa->spa_config_txg) == 0); | |
4222 | VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, | |
4223 | spa_generate_guid(NULL)) == 0); | |
4224 | (void) nvlist_lookup_string(props, | |
4225 | zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot); | |
34dc7c2f | 4226 | |
428870ff BB |
4227 | /* add the new pool to the namespace */ |
4228 | newspa = spa_add(newname, config, altroot); | |
4229 | newspa->spa_config_txg = spa->spa_config_txg; | |
4230 | spa_set_log_state(newspa, SPA_LOG_CLEAR); | |
4231 | ||
4232 | /* release the spa config lock, retaining the namespace lock */ | |
4233 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
4234 | ||
4235 | if (zio_injection_enabled) | |
4236 | zio_handle_panic_injection(spa, FTAG, 1); | |
4237 | ||
4238 | spa_activate(newspa, spa_mode_global); | |
4239 | spa_async_suspend(newspa); | |
4240 | ||
4241 | /* create the new pool from the disks of the original pool */ | |
4242 | error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE, B_TRUE); | |
4243 | if (error) | |
4244 | goto out; | |
4245 | ||
4246 | /* if that worked, generate a real config for the new pool */ | |
4247 | if (newspa->spa_root_vdev != NULL) { | |
4248 | VERIFY(nvlist_alloc(&newspa->spa_config_splitting, | |
4249 | NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
4250 | VERIFY(nvlist_add_uint64(newspa->spa_config_splitting, | |
4251 | ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0); | |
4252 | spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL, | |
4253 | B_TRUE)); | |
9babb374 | 4254 | } |
34dc7c2f | 4255 | |
428870ff BB |
4256 | /* set the props */ |
4257 | if (props != NULL) { | |
4258 | spa_configfile_set(newspa, props, B_FALSE); | |
4259 | error = spa_prop_set(newspa, props); | |
4260 | if (error) | |
4261 | goto out; | |
4262 | } | |
34dc7c2f | 4263 | |
428870ff BB |
4264 | /* flush everything */ |
4265 | txg = spa_vdev_config_enter(newspa); | |
4266 | vdev_config_dirty(newspa->spa_root_vdev); | |
4267 | (void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG); | |
34dc7c2f | 4268 | |
428870ff BB |
4269 | if (zio_injection_enabled) |
4270 | zio_handle_panic_injection(spa, FTAG, 2); | |
34dc7c2f | 4271 | |
428870ff | 4272 | spa_async_resume(newspa); |
34dc7c2f | 4273 | |
428870ff BB |
4274 | /* finally, update the original pool's config */ |
4275 | txg = spa_vdev_config_enter(spa); | |
4276 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
4277 | error = dmu_tx_assign(tx, TXG_WAIT); | |
4278 | if (error != 0) | |
4279 | dmu_tx_abort(tx); | |
4280 | for (c = 0; c < children; c++) { | |
4281 | if (vml[c] != NULL) { | |
4282 | vdev_split(vml[c]); | |
4283 | if (error == 0) | |
4284 | spa_history_log_internal(LOG_POOL_VDEV_DETACH, | |
4285 | spa, tx, "vdev=%s", | |
4286 | vml[c]->vdev_path); | |
4287 | vdev_free(vml[c]); | |
34dc7c2f | 4288 | } |
34dc7c2f | 4289 | } |
428870ff BB |
4290 | vdev_config_dirty(spa->spa_root_vdev); |
4291 | spa->spa_config_splitting = NULL; | |
4292 | nvlist_free(nvl); | |
4293 | if (error == 0) | |
4294 | dmu_tx_commit(tx); | |
4295 | (void) spa_vdev_exit(spa, NULL, txg, 0); | |
4296 | ||
4297 | if (zio_injection_enabled) | |
4298 | zio_handle_panic_injection(spa, FTAG, 3); | |
4299 | ||
4300 | /* split is complete; log a history record */ | |
4301 | spa_history_log_internal(LOG_POOL_SPLIT, newspa, NULL, | |
4302 | "split new pool %s from pool %s", newname, spa_name(spa)); | |
4303 | ||
4304 | kmem_free(vml, children * sizeof (vdev_t *)); | |
4305 | ||
4306 | /* if we're not going to mount the filesystems in userland, export */ | |
4307 | if (exp) | |
4308 | error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL, | |
4309 | B_FALSE, B_FALSE); | |
4310 | ||
4311 | return (error); | |
4312 | ||
4313 | out: | |
4314 | spa_unload(newspa); | |
4315 | spa_deactivate(newspa); | |
4316 | spa_remove(newspa); | |
4317 | ||
4318 | txg = spa_vdev_config_enter(spa); | |
4319 | ||
4320 | /* re-online all offlined disks */ | |
4321 | for (c = 0; c < children; c++) { | |
4322 | if (vml[c] != NULL) | |
4323 | vml[c]->vdev_offline = B_FALSE; | |
4324 | } | |
4325 | vdev_reopen(spa->spa_root_vdev); | |
4326 | ||
4327 | nvlist_free(spa->spa_config_splitting); | |
4328 | spa->spa_config_splitting = NULL; | |
4329 | (void) spa_vdev_exit(spa, NULL, txg, error); | |
34dc7c2f | 4330 | |
428870ff | 4331 | kmem_free(vml, children * sizeof (vdev_t *)); |
34dc7c2f BB |
4332 | return (error); |
4333 | } | |
4334 | ||
b128c09f BB |
4335 | static nvlist_t * |
4336 | spa_nvlist_lookup_by_guid(nvlist_t **nvpp, int count, uint64_t target_guid) | |
34dc7c2f | 4337 | { |
b128c09f BB |
4338 | for (int i = 0; i < count; i++) { |
4339 | uint64_t guid; | |
34dc7c2f | 4340 | |
b128c09f BB |
4341 | VERIFY(nvlist_lookup_uint64(nvpp[i], ZPOOL_CONFIG_GUID, |
4342 | &guid) == 0); | |
34dc7c2f | 4343 | |
b128c09f BB |
4344 | if (guid == target_guid) |
4345 | return (nvpp[i]); | |
34dc7c2f BB |
4346 | } |
4347 | ||
b128c09f | 4348 | return (NULL); |
34dc7c2f BB |
4349 | } |
4350 | ||
b128c09f BB |
4351 | static void |
4352 | spa_vdev_remove_aux(nvlist_t *config, char *name, nvlist_t **dev, int count, | |
4353 | nvlist_t *dev_to_remove) | |
34dc7c2f | 4354 | { |
b128c09f | 4355 | nvlist_t **newdev = NULL; |
34dc7c2f | 4356 | |
b128c09f BB |
4357 | if (count > 1) |
4358 | newdev = kmem_alloc((count - 1) * sizeof (void *), KM_SLEEP); | |
34dc7c2f | 4359 | |
b128c09f BB |
4360 | for (int i = 0, j = 0; i < count; i++) { |
4361 | if (dev[i] == dev_to_remove) | |
4362 | continue; | |
4363 | VERIFY(nvlist_dup(dev[i], &newdev[j++], KM_SLEEP) == 0); | |
34dc7c2f BB |
4364 | } |
4365 | ||
b128c09f BB |
4366 | VERIFY(nvlist_remove(config, name, DATA_TYPE_NVLIST_ARRAY) == 0); |
4367 | VERIFY(nvlist_add_nvlist_array(config, name, newdev, count - 1) == 0); | |
34dc7c2f | 4368 | |
b128c09f BB |
4369 | for (int i = 0; i < count - 1; i++) |
4370 | nvlist_free(newdev[i]); | |
34dc7c2f | 4371 | |
b128c09f BB |
4372 | if (count > 1) |
4373 | kmem_free(newdev, (count - 1) * sizeof (void *)); | |
34dc7c2f BB |
4374 | } |
4375 | ||
428870ff BB |
4376 | /* |
4377 | * Evacuate the device. | |
4378 | */ | |
4379 | static int | |
4380 | spa_vdev_remove_evacuate(spa_t *spa, vdev_t *vd) | |
4381 | { | |
4382 | uint64_t txg; | |
4383 | int error = 0; | |
4384 | ||
4385 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
4386 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
4387 | ASSERT(vd == vd->vdev_top); | |
4388 | ||
4389 | /* | |
4390 | * Evacuate the device. We don't hold the config lock as writer | |
4391 | * since we need to do I/O but we do keep the | |
4392 | * spa_namespace_lock held. Once this completes the device | |
4393 | * should no longer have any blocks allocated on it. | |
4394 | */ | |
4395 | if (vd->vdev_islog) { | |
4396 | if (vd->vdev_stat.vs_alloc != 0) | |
4397 | error = spa_offline_log(spa); | |
4398 | } else { | |
4399 | error = ENOTSUP; | |
4400 | } | |
4401 | ||
4402 | if (error) | |
4403 | return (error); | |
4404 | ||
4405 | /* | |
4406 | * The evacuation succeeded. Remove any remaining MOS metadata | |
4407 | * associated with this vdev, and wait for these changes to sync. | |
4408 | */ | |
4409 | ASSERT3U(vd->vdev_stat.vs_alloc, ==, 0); | |
4410 | txg = spa_vdev_config_enter(spa); | |
4411 | vd->vdev_removing = B_TRUE; | |
4412 | vdev_dirty(vd, 0, NULL, txg); | |
4413 | vdev_config_dirty(vd); | |
4414 | spa_vdev_config_exit(spa, NULL, txg, 0, FTAG); | |
4415 | ||
4416 | return (0); | |
4417 | } | |
4418 | ||
4419 | /* | |
4420 | * Complete the removal by cleaning up the namespace. | |
4421 | */ | |
4422 | static void | |
4423 | spa_vdev_remove_from_namespace(spa_t *spa, vdev_t *vd) | |
4424 | { | |
4425 | vdev_t *rvd = spa->spa_root_vdev; | |
4426 | uint64_t id = vd->vdev_id; | |
4427 | boolean_t last_vdev = (id == (rvd->vdev_children - 1)); | |
4428 | ||
4429 | ASSERT(MUTEX_HELD(&spa_namespace_lock)); | |
4430 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); | |
4431 | ASSERT(vd == vd->vdev_top); | |
4432 | ||
4433 | /* | |
4434 | * Only remove any devices which are empty. | |
4435 | */ | |
4436 | if (vd->vdev_stat.vs_alloc != 0) | |
4437 | return; | |
4438 | ||
4439 | (void) vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); | |
4440 | ||
4441 | if (list_link_active(&vd->vdev_state_dirty_node)) | |
4442 | vdev_state_clean(vd); | |
4443 | if (list_link_active(&vd->vdev_config_dirty_node)) | |
4444 | vdev_config_clean(vd); | |
4445 | ||
4446 | vdev_free(vd); | |
4447 | ||
4448 | if (last_vdev) { | |
4449 | vdev_compact_children(rvd); | |
4450 | } else { | |
4451 | vd = vdev_alloc_common(spa, id, 0, &vdev_hole_ops); | |
4452 | vdev_add_child(rvd, vd); | |
4453 | } | |
4454 | vdev_config_dirty(rvd); | |
4455 | ||
4456 | /* | |
4457 | * Reassess the health of our root vdev. | |
4458 | */ | |
4459 | vdev_reopen(rvd); | |
4460 | } | |
4461 | ||
4462 | /* | |
4463 | * Remove a device from the pool - | |
4464 | * | |
4465 | * Removing a device from the vdev namespace requires several steps | |
4466 | * and can take a significant amount of time. As a result we use | |
4467 | * the spa_vdev_config_[enter/exit] functions which allow us to | |
4468 | * grab and release the spa_config_lock while still holding the namespace | |
4469 | * lock. During each step the configuration is synced out. | |
4470 | */ | |
4471 | ||
34dc7c2f BB |
4472 | /* |
4473 | * Remove a device from the pool. Currently, this supports removing only hot | |
428870ff | 4474 | * spares, slogs, and level 2 ARC devices. |
34dc7c2f BB |
4475 | */ |
4476 | int | |
4477 | spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
4478 | { | |
4479 | vdev_t *vd; | |
428870ff | 4480 | metaslab_group_t *mg; |
b128c09f | 4481 | nvlist_t **spares, **l2cache, *nv; |
fb5f0bc8 | 4482 | uint64_t txg = 0; |
428870ff | 4483 | uint_t nspares, nl2cache; |
34dc7c2f | 4484 | int error = 0; |
fb5f0bc8 | 4485 | boolean_t locked = MUTEX_HELD(&spa_namespace_lock); |
34dc7c2f | 4486 | |
fb5f0bc8 BB |
4487 | if (!locked) |
4488 | txg = spa_vdev_enter(spa); | |
34dc7c2f | 4489 | |
b128c09f | 4490 | vd = spa_lookup_by_guid(spa, guid, B_FALSE); |
34dc7c2f BB |
4491 | |
4492 | if (spa->spa_spares.sav_vdevs != NULL && | |
34dc7c2f | 4493 | nvlist_lookup_nvlist_array(spa->spa_spares.sav_config, |
b128c09f BB |
4494 | ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0 && |
4495 | (nv = spa_nvlist_lookup_by_guid(spares, nspares, guid)) != NULL) { | |
4496 | /* | |
4497 | * Only remove the hot spare if it's not currently in use | |
4498 | * in this pool. | |
4499 | */ | |
4500 | if (vd == NULL || unspare) { | |
4501 | spa_vdev_remove_aux(spa->spa_spares.sav_config, | |
4502 | ZPOOL_CONFIG_SPARES, spares, nspares, nv); | |
4503 | spa_load_spares(spa); | |
4504 | spa->spa_spares.sav_sync = B_TRUE; | |
4505 | } else { | |
4506 | error = EBUSY; | |
4507 | } | |
4508 | } else if (spa->spa_l2cache.sav_vdevs != NULL && | |
34dc7c2f | 4509 | nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, |
b128c09f BB |
4510 | ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && |
4511 | (nv = spa_nvlist_lookup_by_guid(l2cache, nl2cache, guid)) != NULL) { | |
4512 | /* | |
4513 | * Cache devices can always be removed. | |
4514 | */ | |
4515 | spa_vdev_remove_aux(spa->spa_l2cache.sav_config, | |
4516 | ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); | |
34dc7c2f BB |
4517 | spa_load_l2cache(spa); |
4518 | spa->spa_l2cache.sav_sync = B_TRUE; | |
428870ff BB |
4519 | } else if (vd != NULL && vd->vdev_islog) { |
4520 | ASSERT(!locked); | |
4521 | ASSERT(vd == vd->vdev_top); | |
4522 | ||
4523 | /* | |
4524 | * XXX - Once we have bp-rewrite this should | |
4525 | * become the common case. | |
4526 | */ | |
4527 | ||
4528 | mg = vd->vdev_mg; | |
4529 | ||
4530 | /* | |
4531 | * Stop allocating from this vdev. | |
4532 | */ | |
4533 | metaslab_group_passivate(mg); | |
4534 | ||
4535 | /* | |
4536 | * Wait for the youngest allocations and frees to sync, | |
4537 | * and then wait for the deferral of those frees to finish. | |
4538 | */ | |
4539 | spa_vdev_config_exit(spa, NULL, | |
4540 | txg + TXG_CONCURRENT_STATES + TXG_DEFER_SIZE, 0, FTAG); | |
4541 | ||
4542 | /* | |
4543 | * Attempt to evacuate the vdev. | |
4544 | */ | |
4545 | error = spa_vdev_remove_evacuate(spa, vd); | |
4546 | ||
4547 | txg = spa_vdev_config_enter(spa); | |
4548 | ||
4549 | /* | |
4550 | * If we couldn't evacuate the vdev, unwind. | |
4551 | */ | |
4552 | if (error) { | |
4553 | metaslab_group_activate(mg); | |
4554 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4555 | } | |
4556 | ||
4557 | /* | |
4558 | * Clean up the vdev namespace. | |
4559 | */ | |
4560 | spa_vdev_remove_from_namespace(spa, vd); | |
4561 | ||
b128c09f BB |
4562 | } else if (vd != NULL) { |
4563 | /* | |
4564 | * Normal vdevs cannot be removed (yet). | |
4565 | */ | |
4566 | error = ENOTSUP; | |
4567 | } else { | |
4568 | /* | |
4569 | * There is no vdev of any kind with the specified guid. | |
4570 | */ | |
4571 | error = ENOENT; | |
34dc7c2f BB |
4572 | } |
4573 | ||
fb5f0bc8 BB |
4574 | if (!locked) |
4575 | return (spa_vdev_exit(spa, NULL, txg, error)); | |
4576 | ||
4577 | return (error); | |
34dc7c2f BB |
4578 | } |
4579 | ||
4580 | /* | |
4581 | * Find any device that's done replacing, or a vdev marked 'unspare' that's | |
4582 | * current spared, so we can detach it. | |
4583 | */ | |
4584 | static vdev_t * | |
4585 | spa_vdev_resilver_done_hunt(vdev_t *vd) | |
4586 | { | |
4587 | vdev_t *newvd, *oldvd; | |
34dc7c2f | 4588 | |
9babb374 | 4589 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
4590 | oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
4591 | if (oldvd != NULL) | |
4592 | return (oldvd); | |
4593 | } | |
4594 | ||
4595 | /* | |
4596 | * Check for a completed replacement. | |
4597 | */ | |
4598 | if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { | |
4599 | oldvd = vd->vdev_child[0]; | |
4600 | newvd = vd->vdev_child[1]; | |
4601 | ||
fb5f0bc8 | 4602 | if (vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 4603 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
fb5f0bc8 | 4604 | !vdev_dtl_required(oldvd)) |
34dc7c2f | 4605 | return (oldvd); |
34dc7c2f BB |
4606 | } |
4607 | ||
4608 | /* | |
4609 | * Check for a completed resilver with the 'unspare' flag set. | |
4610 | */ | |
4611 | if (vd->vdev_ops == &vdev_spare_ops && vd->vdev_children == 2) { | |
4612 | newvd = vd->vdev_child[0]; | |
4613 | oldvd = vd->vdev_child[1]; | |
4614 | ||
34dc7c2f | 4615 | if (newvd->vdev_unspare && |
fb5f0bc8 | 4616 | vdev_dtl_empty(newvd, DTL_MISSING) && |
428870ff | 4617 | vdev_dtl_empty(newvd, DTL_OUTAGE) && |
fb5f0bc8 | 4618 | !vdev_dtl_required(oldvd)) { |
34dc7c2f | 4619 | newvd->vdev_unspare = 0; |
34dc7c2f BB |
4620 | return (oldvd); |
4621 | } | |
34dc7c2f BB |
4622 | } |
4623 | ||
4624 | return (NULL); | |
4625 | } | |
4626 | ||
4627 | static void | |
4628 | spa_vdev_resilver_done(spa_t *spa) | |
4629 | { | |
fb5f0bc8 BB |
4630 | vdev_t *vd, *pvd, *ppvd; |
4631 | uint64_t guid, sguid, pguid, ppguid; | |
34dc7c2f | 4632 | |
fb5f0bc8 | 4633 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
4634 | |
4635 | while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { | |
fb5f0bc8 BB |
4636 | pvd = vd->vdev_parent; |
4637 | ppvd = pvd->vdev_parent; | |
34dc7c2f | 4638 | guid = vd->vdev_guid; |
fb5f0bc8 BB |
4639 | pguid = pvd->vdev_guid; |
4640 | ppguid = ppvd->vdev_guid; | |
4641 | sguid = 0; | |
34dc7c2f BB |
4642 | /* |
4643 | * If we have just finished replacing a hot spared device, then | |
4644 | * we need to detach the parent's first child (the original hot | |
4645 | * spare) as well. | |
4646 | */ | |
fb5f0bc8 | 4647 | if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0) { |
34dc7c2f | 4648 | ASSERT(pvd->vdev_ops == &vdev_replacing_ops); |
fb5f0bc8 BB |
4649 | ASSERT(ppvd->vdev_children == 2); |
4650 | sguid = ppvd->vdev_child[1]->vdev_guid; | |
34dc7c2f | 4651 | } |
fb5f0bc8 BB |
4652 | spa_config_exit(spa, SCL_ALL, FTAG); |
4653 | if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0) | |
34dc7c2f | 4654 | return; |
fb5f0bc8 | 4655 | if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0) |
34dc7c2f | 4656 | return; |
fb5f0bc8 | 4657 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
4658 | } |
4659 | ||
fb5f0bc8 | 4660 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
4661 | } |
4662 | ||
4663 | /* | |
428870ff | 4664 | * Update the stored path or FRU for this vdev. |
34dc7c2f BB |
4665 | */ |
4666 | int | |
9babb374 BB |
4667 | spa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value, |
4668 | boolean_t ispath) | |
34dc7c2f | 4669 | { |
b128c09f | 4670 | vdev_t *vd; |
428870ff | 4671 | boolean_t sync = B_FALSE; |
34dc7c2f | 4672 | |
428870ff | 4673 | spa_vdev_state_enter(spa, SCL_ALL); |
34dc7c2f | 4674 | |
9babb374 | 4675 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
428870ff | 4676 | return (spa_vdev_state_exit(spa, NULL, ENOENT)); |
34dc7c2f BB |
4677 | |
4678 | if (!vd->vdev_ops->vdev_op_leaf) | |
428870ff | 4679 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 4680 | |
9babb374 | 4681 | if (ispath) { |
428870ff BB |
4682 | if (strcmp(value, vd->vdev_path) != 0) { |
4683 | spa_strfree(vd->vdev_path); | |
4684 | vd->vdev_path = spa_strdup(value); | |
4685 | sync = B_TRUE; | |
4686 | } | |
9babb374 | 4687 | } else { |
428870ff BB |
4688 | if (vd->vdev_fru == NULL) { |
4689 | vd->vdev_fru = spa_strdup(value); | |
4690 | sync = B_TRUE; | |
4691 | } else if (strcmp(value, vd->vdev_fru) != 0) { | |
9babb374 | 4692 | spa_strfree(vd->vdev_fru); |
428870ff BB |
4693 | vd->vdev_fru = spa_strdup(value); |
4694 | sync = B_TRUE; | |
4695 | } | |
9babb374 | 4696 | } |
34dc7c2f | 4697 | |
428870ff | 4698 | return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0)); |
34dc7c2f BB |
4699 | } |
4700 | ||
9babb374 BB |
4701 | int |
4702 | spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) | |
4703 | { | |
4704 | return (spa_vdev_set_common(spa, guid, newpath, B_TRUE)); | |
4705 | } | |
4706 | ||
4707 | int | |
4708 | spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru) | |
4709 | { | |
4710 | return (spa_vdev_set_common(spa, guid, newfru, B_FALSE)); | |
4711 | } | |
4712 | ||
34dc7c2f BB |
4713 | /* |
4714 | * ========================================================================== | |
428870ff | 4715 | * SPA Scanning |
34dc7c2f BB |
4716 | * ========================================================================== |
4717 | */ | |
4718 | ||
34dc7c2f | 4719 | int |
428870ff BB |
4720 | spa_scan_stop(spa_t *spa) |
4721 | { | |
4722 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); | |
4723 | if (dsl_scan_resilvering(spa->spa_dsl_pool)) | |
4724 | return (EBUSY); | |
4725 | return (dsl_scan_cancel(spa->spa_dsl_pool)); | |
4726 | } | |
4727 | ||
4728 | int | |
4729 | spa_scan(spa_t *spa, pool_scan_func_t func) | |
34dc7c2f | 4730 | { |
b128c09f | 4731 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0); |
34dc7c2f | 4732 | |
428870ff | 4733 | if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE) |
34dc7c2f BB |
4734 | return (ENOTSUP); |
4735 | ||
34dc7c2f | 4736 | /* |
b128c09f BB |
4737 | * If a resilver was requested, but there is no DTL on a |
4738 | * writeable leaf device, we have nothing to do. | |
34dc7c2f | 4739 | */ |
428870ff | 4740 | if (func == POOL_SCAN_RESILVER && |
b128c09f BB |
4741 | !vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) { |
4742 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f BB |
4743 | return (0); |
4744 | } | |
4745 | ||
428870ff | 4746 | return (dsl_scan(spa->spa_dsl_pool, func)); |
34dc7c2f BB |
4747 | } |
4748 | ||
4749 | /* | |
4750 | * ========================================================================== | |
4751 | * SPA async task processing | |
4752 | * ========================================================================== | |
4753 | */ | |
4754 | ||
4755 | static void | |
4756 | spa_async_remove(spa_t *spa, vdev_t *vd) | |
4757 | { | |
b128c09f | 4758 | if (vd->vdev_remove_wanted) { |
428870ff BB |
4759 | vd->vdev_remove_wanted = B_FALSE; |
4760 | vd->vdev_delayed_close = B_FALSE; | |
b128c09f | 4761 | vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE); |
428870ff BB |
4762 | |
4763 | /* | |
4764 | * We want to clear the stats, but we don't want to do a full | |
4765 | * vdev_clear() as that will cause us to throw away | |
4766 | * degraded/faulted state as well as attempt to reopen the | |
4767 | * device, all of which is a waste. | |
4768 | */ | |
4769 | vd->vdev_stat.vs_read_errors = 0; | |
4770 | vd->vdev_stat.vs_write_errors = 0; | |
4771 | vd->vdev_stat.vs_checksum_errors = 0; | |
4772 | ||
b128c09f BB |
4773 | vdev_state_dirty(vd->vdev_top); |
4774 | } | |
34dc7c2f | 4775 | |
b128c09f BB |
4776 | for (int c = 0; c < vd->vdev_children; c++) |
4777 | spa_async_remove(spa, vd->vdev_child[c]); | |
4778 | } | |
4779 | ||
4780 | static void | |
4781 | spa_async_probe(spa_t *spa, vdev_t *vd) | |
4782 | { | |
4783 | if (vd->vdev_probe_wanted) { | |
428870ff | 4784 | vd->vdev_probe_wanted = B_FALSE; |
b128c09f | 4785 | vdev_reopen(vd); /* vdev_open() does the actual probe */ |
34dc7c2f | 4786 | } |
b128c09f BB |
4787 | |
4788 | for (int c = 0; c < vd->vdev_children; c++) | |
4789 | spa_async_probe(spa, vd->vdev_child[c]); | |
34dc7c2f BB |
4790 | } |
4791 | ||
9babb374 BB |
4792 | static void |
4793 | spa_async_autoexpand(spa_t *spa, vdev_t *vd) | |
4794 | { | |
4795 | sysevent_id_t eid; | |
4796 | nvlist_t *attr; | |
4797 | char *physpath; | |
4798 | ||
4799 | if (!spa->spa_autoexpand) | |
4800 | return; | |
4801 | ||
4802 | for (int c = 0; c < vd->vdev_children; c++) { | |
4803 | vdev_t *cvd = vd->vdev_child[c]; | |
4804 | spa_async_autoexpand(spa, cvd); | |
4805 | } | |
4806 | ||
4807 | if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL) | |
4808 | return; | |
4809 | ||
4810 | physpath = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
4811 | (void) snprintf(physpath, MAXPATHLEN, "/devices%s", vd->vdev_physpath); | |
4812 | ||
4813 | VERIFY(nvlist_alloc(&attr, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
4814 | VERIFY(nvlist_add_string(attr, DEV_PHYS_PATH, physpath) == 0); | |
4815 | ||
4816 | (void) ddi_log_sysevent(zfs_dip, SUNW_VENDOR, EC_DEV_STATUS, | |
4817 | ESC_DEV_DLE, attr, &eid, DDI_SLEEP); | |
4818 | ||
4819 | nvlist_free(attr); | |
4820 | kmem_free(physpath, MAXPATHLEN); | |
4821 | } | |
4822 | ||
34dc7c2f BB |
4823 | static void |
4824 | spa_async_thread(spa_t *spa) | |
4825 | { | |
4826 | int tasks; | |
34dc7c2f BB |
4827 | |
4828 | ASSERT(spa->spa_sync_on); | |
4829 | ||
4830 | mutex_enter(&spa->spa_async_lock); | |
4831 | tasks = spa->spa_async_tasks; | |
4832 | spa->spa_async_tasks = 0; | |
4833 | mutex_exit(&spa->spa_async_lock); | |
4834 | ||
4835 | /* | |
4836 | * See if the config needs to be updated. | |
4837 | */ | |
4838 | if (tasks & SPA_ASYNC_CONFIG_UPDATE) { | |
428870ff | 4839 | uint64_t old_space, new_space; |
9babb374 | 4840 | |
34dc7c2f | 4841 | mutex_enter(&spa_namespace_lock); |
428870ff | 4842 | old_space = metaslab_class_get_space(spa_normal_class(spa)); |
34dc7c2f | 4843 | spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
428870ff | 4844 | new_space = metaslab_class_get_space(spa_normal_class(spa)); |
34dc7c2f | 4845 | mutex_exit(&spa_namespace_lock); |
9babb374 BB |
4846 | |
4847 | /* | |
4848 | * If the pool grew as a result of the config update, | |
4849 | * then log an internal history event. | |
4850 | */ | |
428870ff BB |
4851 | if (new_space != old_space) { |
4852 | spa_history_log_internal(LOG_POOL_VDEV_ONLINE, | |
4853 | spa, NULL, | |
45d1cae3 | 4854 | "pool '%s' size: %llu(+%llu)", |
428870ff | 4855 | spa_name(spa), new_space, new_space - old_space); |
9babb374 | 4856 | } |
34dc7c2f BB |
4857 | } |
4858 | ||
4859 | /* | |
4860 | * See if any devices need to be marked REMOVED. | |
34dc7c2f | 4861 | */ |
b128c09f | 4862 | if (tasks & SPA_ASYNC_REMOVE) { |
428870ff | 4863 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 4864 | spa_async_remove(spa, spa->spa_root_vdev); |
b128c09f BB |
4865 | for (int i = 0; i < spa->spa_l2cache.sav_count; i++) |
4866 | spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]); | |
4867 | for (int i = 0; i < spa->spa_spares.sav_count; i++) | |
4868 | spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]); | |
4869 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
34dc7c2f BB |
4870 | } |
4871 | ||
9babb374 BB |
4872 | if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) { |
4873 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); | |
4874 | spa_async_autoexpand(spa, spa->spa_root_vdev); | |
4875 | spa_config_exit(spa, SCL_CONFIG, FTAG); | |
4876 | } | |
4877 | ||
34dc7c2f | 4878 | /* |
b128c09f | 4879 | * See if any devices need to be probed. |
34dc7c2f | 4880 | */ |
b128c09f | 4881 | if (tasks & SPA_ASYNC_PROBE) { |
428870ff | 4882 | spa_vdev_state_enter(spa, SCL_NONE); |
b128c09f BB |
4883 | spa_async_probe(spa, spa->spa_root_vdev); |
4884 | (void) spa_vdev_state_exit(spa, NULL, 0); | |
4885 | } | |
34dc7c2f BB |
4886 | |
4887 | /* | |
b128c09f | 4888 | * If any devices are done replacing, detach them. |
34dc7c2f | 4889 | */ |
b128c09f BB |
4890 | if (tasks & SPA_ASYNC_RESILVER_DONE) |
4891 | spa_vdev_resilver_done(spa); | |
34dc7c2f BB |
4892 | |
4893 | /* | |
4894 | * Kick off a resilver. | |
4895 | */ | |
b128c09f | 4896 | if (tasks & SPA_ASYNC_RESILVER) |
428870ff | 4897 | dsl_resilver_restart(spa->spa_dsl_pool, 0); |
34dc7c2f BB |
4898 | |
4899 | /* | |
4900 | * Let the world know that we're done. | |
4901 | */ | |
4902 | mutex_enter(&spa->spa_async_lock); | |
4903 | spa->spa_async_thread = NULL; | |
4904 | cv_broadcast(&spa->spa_async_cv); | |
4905 | mutex_exit(&spa->spa_async_lock); | |
4906 | thread_exit(); | |
4907 | } | |
4908 | ||
4909 | void | |
4910 | spa_async_suspend(spa_t *spa) | |
4911 | { | |
4912 | mutex_enter(&spa->spa_async_lock); | |
4913 | spa->spa_async_suspended++; | |
4914 | while (spa->spa_async_thread != NULL) | |
4915 | cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
4916 | mutex_exit(&spa->spa_async_lock); | |
4917 | } | |
4918 | ||
4919 | void | |
4920 | spa_async_resume(spa_t *spa) | |
4921 | { | |
4922 | mutex_enter(&spa->spa_async_lock); | |
4923 | ASSERT(spa->spa_async_suspended != 0); | |
4924 | spa->spa_async_suspended--; | |
4925 | mutex_exit(&spa->spa_async_lock); | |
4926 | } | |
4927 | ||
4928 | static void | |
4929 | spa_async_dispatch(spa_t *spa) | |
4930 | { | |
4931 | mutex_enter(&spa->spa_async_lock); | |
4932 | if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
4933 | spa->spa_async_thread == NULL && | |
4934 | rootdir != NULL && !vn_is_readonly(rootdir)) | |
4935 | spa->spa_async_thread = thread_create(NULL, 0, | |
4936 | spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
4937 | mutex_exit(&spa->spa_async_lock); | |
4938 | } | |
4939 | ||
4940 | void | |
4941 | spa_async_request(spa_t *spa, int task) | |
4942 | { | |
428870ff | 4943 | zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task); |
34dc7c2f BB |
4944 | mutex_enter(&spa->spa_async_lock); |
4945 | spa->spa_async_tasks |= task; | |
4946 | mutex_exit(&spa->spa_async_lock); | |
4947 | } | |
4948 | ||
4949 | /* | |
4950 | * ========================================================================== | |
4951 | * SPA syncing routines | |
4952 | * ========================================================================== | |
4953 | */ | |
4954 | ||
428870ff BB |
4955 | static int |
4956 | bpobj_enqueue_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
34dc7c2f | 4957 | { |
428870ff BB |
4958 | bpobj_t *bpo = arg; |
4959 | bpobj_enqueue(bpo, bp, tx); | |
4960 | return (0); | |
4961 | } | |
34dc7c2f | 4962 | |
428870ff BB |
4963 | static int |
4964 | spa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) | |
4965 | { | |
4966 | zio_t *zio = arg; | |
34dc7c2f | 4967 | |
428870ff BB |
4968 | zio_nowait(zio_free_sync(zio, zio->io_spa, dmu_tx_get_txg(tx), bp, |
4969 | zio->io_flags)); | |
4970 | return (0); | |
34dc7c2f BB |
4971 | } |
4972 | ||
4973 | static void | |
4974 | spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) | |
4975 | { | |
4976 | char *packed = NULL; | |
b128c09f | 4977 | size_t bufsize; |
34dc7c2f BB |
4978 | size_t nvsize = 0; |
4979 | dmu_buf_t *db; | |
4980 | ||
4981 | VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
4982 | ||
b128c09f BB |
4983 | /* |
4984 | * Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration | |
4985 | * information. This avoids the dbuf_will_dirty() path and | |
4986 | * saves us a pre-read to get data we don't actually care about. | |
4987 | */ | |
4988 | bufsize = P2ROUNDUP(nvsize, SPA_CONFIG_BLOCKSIZE); | |
4989 | packed = kmem_alloc(bufsize, KM_SLEEP); | |
34dc7c2f BB |
4990 | |
4991 | VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
4992 | KM_SLEEP) == 0); | |
b128c09f | 4993 | bzero(packed + nvsize, bufsize - nvsize); |
34dc7c2f | 4994 | |
b128c09f | 4995 | dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx); |
34dc7c2f | 4996 | |
b128c09f | 4997 | kmem_free(packed, bufsize); |
34dc7c2f BB |
4998 | |
4999 | VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
5000 | dmu_buf_will_dirty(db, tx); | |
5001 | *(uint64_t *)db->db_data = nvsize; | |
5002 | dmu_buf_rele(db, FTAG); | |
5003 | } | |
5004 | ||
5005 | static void | |
5006 | spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx, | |
5007 | const char *config, const char *entry) | |
5008 | { | |
5009 | nvlist_t *nvroot; | |
5010 | nvlist_t **list; | |
5011 | int i; | |
5012 | ||
5013 | if (!sav->sav_sync) | |
5014 | return; | |
5015 | ||
5016 | /* | |
5017 | * Update the MOS nvlist describing the list of available devices. | |
5018 | * spa_validate_aux() will have already made sure this nvlist is | |
5019 | * valid and the vdevs are labeled appropriately. | |
5020 | */ | |
5021 | if (sav->sav_object == 0) { | |
5022 | sav->sav_object = dmu_object_alloc(spa->spa_meta_objset, | |
5023 | DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE, | |
5024 | sizeof (uint64_t), tx); | |
5025 | VERIFY(zap_update(spa->spa_meta_objset, | |
5026 | DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1, | |
5027 | &sav->sav_object, tx) == 0); | |
5028 | } | |
5029 | ||
5030 | VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
5031 | if (sav->sav_count == 0) { | |
5032 | VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0); | |
5033 | } else { | |
5034 | list = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); | |
5035 | for (i = 0; i < sav->sav_count; i++) | |
5036 | list[i] = vdev_config_generate(spa, sav->sav_vdevs[i], | |
428870ff | 5037 | B_FALSE, VDEV_CONFIG_L2CACHE); |
34dc7c2f BB |
5038 | VERIFY(nvlist_add_nvlist_array(nvroot, config, list, |
5039 | sav->sav_count) == 0); | |
5040 | for (i = 0; i < sav->sav_count; i++) | |
5041 | nvlist_free(list[i]); | |
5042 | kmem_free(list, sav->sav_count * sizeof (void *)); | |
5043 | } | |
5044 | ||
5045 | spa_sync_nvlist(spa, sav->sav_object, nvroot, tx); | |
5046 | nvlist_free(nvroot); | |
5047 | ||
5048 | sav->sav_sync = B_FALSE; | |
5049 | } | |
5050 | ||
5051 | static void | |
5052 | spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) | |
5053 | { | |
5054 | nvlist_t *config; | |
5055 | ||
b128c09f | 5056 | if (list_is_empty(&spa->spa_config_dirty_list)) |
34dc7c2f BB |
5057 | return; |
5058 | ||
b128c09f BB |
5059 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); |
5060 | ||
5061 | config = spa_config_generate(spa, spa->spa_root_vdev, | |
5062 | dmu_tx_get_txg(tx), B_FALSE); | |
5063 | ||
5064 | spa_config_exit(spa, SCL_STATE, FTAG); | |
34dc7c2f BB |
5065 | |
5066 | if (spa->spa_config_syncing) | |
5067 | nvlist_free(spa->spa_config_syncing); | |
5068 | spa->spa_config_syncing = config; | |
5069 | ||
5070 | spa_sync_nvlist(spa, spa->spa_config_object, config, tx); | |
5071 | } | |
5072 | ||
5073 | /* | |
5074 | * Set zpool properties. | |
5075 | */ | |
5076 | static void | |
428870ff | 5077 | spa_sync_props(void *arg1, void *arg2, dmu_tx_t *tx) |
34dc7c2f BB |
5078 | { |
5079 | spa_t *spa = arg1; | |
5080 | objset_t *mos = spa->spa_meta_objset; | |
5081 | nvlist_t *nvp = arg2; | |
5082 | nvpair_t *elem; | |
5083 | uint64_t intval; | |
b128c09f | 5084 | char *strval; |
34dc7c2f BB |
5085 | zpool_prop_t prop; |
5086 | const char *propname; | |
5087 | zprop_type_t proptype; | |
b128c09f BB |
5088 | |
5089 | mutex_enter(&spa->spa_props_lock); | |
34dc7c2f BB |
5090 | |
5091 | elem = NULL; | |
5092 | while ((elem = nvlist_next_nvpair(nvp, elem))) { | |
5093 | switch (prop = zpool_name_to_prop(nvpair_name(elem))) { | |
5094 | case ZPOOL_PROP_VERSION: | |
5095 | /* | |
5096 | * Only set version for non-zpool-creation cases | |
5097 | * (set/import). spa_create() needs special care | |
5098 | * for version setting. | |
5099 | */ | |
5100 | if (tx->tx_txg != TXG_INITIAL) { | |
5101 | VERIFY(nvpair_value_uint64(elem, | |
5102 | &intval) == 0); | |
5103 | ASSERT(intval <= SPA_VERSION); | |
5104 | ASSERT(intval >= spa_version(spa)); | |
5105 | spa->spa_uberblock.ub_version = intval; | |
5106 | vdev_config_dirty(spa->spa_root_vdev); | |
5107 | } | |
5108 | break; | |
5109 | ||
5110 | case ZPOOL_PROP_ALTROOT: | |
5111 | /* | |
5112 | * 'altroot' is a non-persistent property. It should | |
5113 | * have been set temporarily at creation or import time. | |
5114 | */ | |
5115 | ASSERT(spa->spa_root != NULL); | |
5116 | break; | |
5117 | ||
5118 | case ZPOOL_PROP_CACHEFILE: | |
5119 | /* | |
d164b209 | 5120 | * 'cachefile' is also a non-persisitent property. |
34dc7c2f | 5121 | */ |
34dc7c2f BB |
5122 | break; |
5123 | default: | |
5124 | /* | |
5125 | * Set pool property values in the poolprops mos object. | |
5126 | */ | |
34dc7c2f | 5127 | if (spa->spa_pool_props_object == 0) { |
34dc7c2f BB |
5128 | VERIFY((spa->spa_pool_props_object = |
5129 | zap_create(mos, DMU_OT_POOL_PROPS, | |
5130 | DMU_OT_NONE, 0, tx)) > 0); | |
5131 | ||
5132 | VERIFY(zap_update(mos, | |
5133 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS, | |
5134 | 8, 1, &spa->spa_pool_props_object, tx) | |
5135 | == 0); | |
5136 | } | |
34dc7c2f BB |
5137 | |
5138 | /* normalize the property name */ | |
5139 | propname = zpool_prop_to_name(prop); | |
5140 | proptype = zpool_prop_get_type(prop); | |
5141 | ||
5142 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
5143 | ASSERT(proptype == PROP_TYPE_STRING); | |
5144 | VERIFY(nvpair_value_string(elem, &strval) == 0); | |
5145 | VERIFY(zap_update(mos, | |
5146 | spa->spa_pool_props_object, propname, | |
5147 | 1, strlen(strval) + 1, strval, tx) == 0); | |
5148 | ||
5149 | } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { | |
5150 | VERIFY(nvpair_value_uint64(elem, &intval) == 0); | |
5151 | ||
5152 | if (proptype == PROP_TYPE_INDEX) { | |
5153 | const char *unused; | |
5154 | VERIFY(zpool_prop_index_to_string( | |
5155 | prop, intval, &unused) == 0); | |
5156 | } | |
5157 | VERIFY(zap_update(mos, | |
5158 | spa->spa_pool_props_object, propname, | |
5159 | 8, 1, &intval, tx) == 0); | |
5160 | } else { | |
5161 | ASSERT(0); /* not allowed */ | |
5162 | } | |
5163 | ||
5164 | switch (prop) { | |
5165 | case ZPOOL_PROP_DELEGATION: | |
5166 | spa->spa_delegation = intval; | |
5167 | break; | |
5168 | case ZPOOL_PROP_BOOTFS: | |
5169 | spa->spa_bootfs = intval; | |
5170 | break; | |
5171 | case ZPOOL_PROP_FAILUREMODE: | |
5172 | spa->spa_failmode = intval; | |
5173 | break; | |
9babb374 BB |
5174 | case ZPOOL_PROP_AUTOEXPAND: |
5175 | spa->spa_autoexpand = intval; | |
428870ff BB |
5176 | if (tx->tx_txg != TXG_INITIAL) |
5177 | spa_async_request(spa, | |
5178 | SPA_ASYNC_AUTOEXPAND); | |
5179 | break; | |
5180 | case ZPOOL_PROP_DEDUPDITTO: | |
5181 | spa->spa_dedup_ditto = intval; | |
9babb374 | 5182 | break; |
34dc7c2f BB |
5183 | default: |
5184 | break; | |
5185 | } | |
5186 | } | |
5187 | ||
5188 | /* log internal history if this is not a zpool create */ | |
5189 | if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY && | |
5190 | tx->tx_txg != TXG_INITIAL) { | |
428870ff BB |
5191 | spa_history_log_internal(LOG_POOL_PROPSET, |
5192 | spa, tx, "%s %lld %s", | |
b128c09f | 5193 | nvpair_name(elem), intval, spa_name(spa)); |
34dc7c2f BB |
5194 | } |
5195 | } | |
b128c09f BB |
5196 | |
5197 | mutex_exit(&spa->spa_props_lock); | |
34dc7c2f BB |
5198 | } |
5199 | ||
428870ff BB |
5200 | /* |
5201 | * Perform one-time upgrade on-disk changes. spa_version() does not | |
5202 | * reflect the new version this txg, so there must be no changes this | |
5203 | * txg to anything that the upgrade code depends on after it executes. | |
5204 | * Therefore this must be called after dsl_pool_sync() does the sync | |
5205 | * tasks. | |
5206 | */ | |
5207 | static void | |
5208 | spa_sync_upgrades(spa_t *spa, dmu_tx_t *tx) | |
5209 | { | |
5210 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
5211 | ||
5212 | ASSERT(spa->spa_sync_pass == 1); | |
5213 | ||
5214 | if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN && | |
5215 | spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) { | |
5216 | dsl_pool_create_origin(dp, tx); | |
5217 | ||
5218 | /* Keeping the origin open increases spa_minref */ | |
5219 | spa->spa_minref += 3; | |
5220 | } | |
5221 | ||
5222 | if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES && | |
5223 | spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) { | |
5224 | dsl_pool_upgrade_clones(dp, tx); | |
5225 | } | |
5226 | ||
5227 | if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES && | |
5228 | spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) { | |
5229 | dsl_pool_upgrade_dir_clones(dp, tx); | |
5230 | ||
5231 | /* Keeping the freedir open increases spa_minref */ | |
5232 | spa->spa_minref += 3; | |
5233 | } | |
5234 | } | |
5235 | ||
34dc7c2f BB |
5236 | /* |
5237 | * Sync the specified transaction group. New blocks may be dirtied as | |
5238 | * part of the process, so we iterate until it converges. | |
5239 | */ | |
5240 | void | |
5241 | spa_sync(spa_t *spa, uint64_t txg) | |
5242 | { | |
5243 | dsl_pool_t *dp = spa->spa_dsl_pool; | |
5244 | objset_t *mos = spa->spa_meta_objset; | |
428870ff BB |
5245 | bpobj_t *defer_bpo = &spa->spa_deferred_bpobj; |
5246 | bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK]; | |
34dc7c2f BB |
5247 | vdev_t *rvd = spa->spa_root_vdev; |
5248 | vdev_t *vd; | |
34dc7c2f | 5249 | dmu_tx_t *tx; |
b128c09f | 5250 | int error; |
34dc7c2f BB |
5251 | |
5252 | /* | |
5253 | * Lock out configuration changes. | |
5254 | */ | |
b128c09f | 5255 | spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER); |
34dc7c2f BB |
5256 | |
5257 | spa->spa_syncing_txg = txg; | |
5258 | spa->spa_sync_pass = 0; | |
5259 | ||
b128c09f BB |
5260 | /* |
5261 | * If there are any pending vdev state changes, convert them | |
5262 | * into config changes that go out with this transaction group. | |
5263 | */ | |
5264 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
fb5f0bc8 BB |
5265 | while (list_head(&spa->spa_state_dirty_list) != NULL) { |
5266 | /* | |
5267 | * We need the write lock here because, for aux vdevs, | |
5268 | * calling vdev_config_dirty() modifies sav_config. | |
5269 | * This is ugly and will become unnecessary when we | |
5270 | * eliminate the aux vdev wart by integrating all vdevs | |
5271 | * into the root vdev tree. | |
5272 | */ | |
5273 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
5274 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER); | |
5275 | while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) { | |
5276 | vdev_state_clean(vd); | |
5277 | vdev_config_dirty(vd); | |
5278 | } | |
5279 | spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); | |
5280 | spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); | |
b128c09f BB |
5281 | } |
5282 | spa_config_exit(spa, SCL_STATE, FTAG); | |
5283 | ||
34dc7c2f BB |
5284 | tx = dmu_tx_create_assigned(dp, txg); |
5285 | ||
5286 | /* | |
5287 | * If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg, | |
5288 | * set spa_deflate if we have no raid-z vdevs. | |
5289 | */ | |
5290 | if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE && | |
5291 | spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) { | |
5292 | int i; | |
5293 | ||
5294 | for (i = 0; i < rvd->vdev_children; i++) { | |
5295 | vd = rvd->vdev_child[i]; | |
5296 | if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
5297 | break; | |
5298 | } | |
5299 | if (i == rvd->vdev_children) { | |
5300 | spa->spa_deflate = TRUE; | |
5301 | VERIFY(0 == zap_add(spa->spa_meta_objset, | |
5302 | DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
5303 | sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
5304 | } | |
5305 | } | |
5306 | ||
5307 | /* | |
428870ff BB |
5308 | * If anything has changed in this txg, or if someone is waiting |
5309 | * for this txg to sync (eg, spa_vdev_remove()), push the | |
5310 | * deferred frees from the previous txg. If not, leave them | |
5311 | * alone so that we don't generate work on an otherwise idle | |
5312 | * system. | |
34dc7c2f BB |
5313 | */ |
5314 | if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
5315 | !txg_list_empty(&dp->dp_dirty_dirs, txg) || | |
428870ff BB |
5316 | !txg_list_empty(&dp->dp_sync_tasks, txg) || |
5317 | ((dsl_scan_active(dp->dp_scan) || | |
5318 | txg_sync_waiting(dp)) && !spa_shutting_down(spa))) { | |
5319 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
5320 | VERIFY3U(bpobj_iterate(defer_bpo, | |
5321 | spa_free_sync_cb, zio, tx), ==, 0); | |
5322 | VERIFY3U(zio_wait(zio), ==, 0); | |
5323 | } | |
34dc7c2f BB |
5324 | |
5325 | /* | |
5326 | * Iterate to convergence. | |
5327 | */ | |
5328 | do { | |
428870ff | 5329 | int pass = ++spa->spa_sync_pass; |
34dc7c2f BB |
5330 | |
5331 | spa_sync_config_object(spa, tx); | |
5332 | spa_sync_aux_dev(spa, &spa->spa_spares, tx, | |
5333 | ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES); | |
5334 | spa_sync_aux_dev(spa, &spa->spa_l2cache, tx, | |
5335 | ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE); | |
5336 | spa_errlog_sync(spa, txg); | |
5337 | dsl_pool_sync(dp, txg); | |
5338 | ||
428870ff BB |
5339 | if (pass <= SYNC_PASS_DEFERRED_FREE) { |
5340 | zio_t *zio = zio_root(spa, NULL, NULL, 0); | |
5341 | bplist_iterate(free_bpl, spa_free_sync_cb, | |
5342 | zio, tx); | |
5343 | VERIFY(zio_wait(zio) == 0); | |
5344 | } else { | |
5345 | bplist_iterate(free_bpl, bpobj_enqueue_cb, | |
5346 | defer_bpo, tx); | |
34dc7c2f BB |
5347 | } |
5348 | ||
428870ff BB |
5349 | ddt_sync(spa, txg); |
5350 | dsl_scan_sync(dp, tx); | |
34dc7c2f | 5351 | |
428870ff BB |
5352 | while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) |
5353 | vdev_sync(vd, txg); | |
5354 | ||
5355 | if (pass == 1) | |
5356 | spa_sync_upgrades(spa, tx); | |
34dc7c2f | 5357 | |
428870ff | 5358 | } while (dmu_objset_is_dirty(mos, txg)); |
34dc7c2f BB |
5359 | |
5360 | /* | |
5361 | * Rewrite the vdev configuration (which includes the uberblock) | |
5362 | * to commit the transaction group. | |
5363 | * | |
5364 | * If there are no dirty vdevs, we sync the uberblock to a few | |
5365 | * random top-level vdevs that are known to be visible in the | |
b128c09f BB |
5366 | * config cache (see spa_vdev_add() for a complete description). |
5367 | * If there *are* dirty vdevs, sync the uberblock to all vdevs. | |
34dc7c2f | 5368 | */ |
b128c09f BB |
5369 | for (;;) { |
5370 | /* | |
5371 | * We hold SCL_STATE to prevent vdev open/close/etc. | |
5372 | * while we're attempting to write the vdev labels. | |
5373 | */ | |
5374 | spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); | |
5375 | ||
5376 | if (list_is_empty(&spa->spa_config_dirty_list)) { | |
5377 | vdev_t *svd[SPA_DVAS_PER_BP]; | |
5378 | int svdcount = 0; | |
5379 | int children = rvd->vdev_children; | |
5380 | int c0 = spa_get_random(children); | |
b128c09f | 5381 | |
9babb374 | 5382 | for (int c = 0; c < children; c++) { |
b128c09f BB |
5383 | vd = rvd->vdev_child[(c0 + c) % children]; |
5384 | if (vd->vdev_ms_array == 0 || vd->vdev_islog) | |
5385 | continue; | |
5386 | svd[svdcount++] = vd; | |
5387 | if (svdcount == SPA_DVAS_PER_BP) | |
5388 | break; | |
5389 | } | |
9babb374 BB |
5390 | error = vdev_config_sync(svd, svdcount, txg, B_FALSE); |
5391 | if (error != 0) | |
5392 | error = vdev_config_sync(svd, svdcount, txg, | |
5393 | B_TRUE); | |
b128c09f BB |
5394 | } else { |
5395 | error = vdev_config_sync(rvd->vdev_child, | |
9babb374 BB |
5396 | rvd->vdev_children, txg, B_FALSE); |
5397 | if (error != 0) | |
5398 | error = vdev_config_sync(rvd->vdev_child, | |
5399 | rvd->vdev_children, txg, B_TRUE); | |
34dc7c2f | 5400 | } |
34dc7c2f | 5401 | |
b128c09f BB |
5402 | spa_config_exit(spa, SCL_STATE, FTAG); |
5403 | ||
5404 | if (error == 0) | |
5405 | break; | |
5406 | zio_suspend(spa, NULL); | |
5407 | zio_resume_wait(spa); | |
5408 | } | |
34dc7c2f BB |
5409 | dmu_tx_commit(tx); |
5410 | ||
5411 | /* | |
5412 | * Clear the dirty config list. | |
5413 | */ | |
b128c09f | 5414 | while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL) |
34dc7c2f BB |
5415 | vdev_config_clean(vd); |
5416 | ||
5417 | /* | |
5418 | * Now that the new config has synced transactionally, | |
5419 | * let it become visible to the config cache. | |
5420 | */ | |
5421 | if (spa->spa_config_syncing != NULL) { | |
5422 | spa_config_set(spa, spa->spa_config_syncing); | |
5423 | spa->spa_config_txg = txg; | |
5424 | spa->spa_config_syncing = NULL; | |
5425 | } | |
5426 | ||
34dc7c2f | 5427 | spa->spa_ubsync = spa->spa_uberblock; |
34dc7c2f | 5428 | |
428870ff | 5429 | dsl_pool_sync_done(dp, txg); |
34dc7c2f BB |
5430 | |
5431 | /* | |
5432 | * Update usable space statistics. | |
5433 | */ | |
5434 | while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
5435 | vdev_sync_done(vd, txg); | |
5436 | ||
428870ff BB |
5437 | spa_update_dspace(spa); |
5438 | ||
34dc7c2f BB |
5439 | /* |
5440 | * It had better be the case that we didn't dirty anything | |
5441 | * since vdev_config_sync(). | |
5442 | */ | |
5443 | ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
5444 | ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
5445 | ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
428870ff BB |
5446 | |
5447 | spa->spa_sync_pass = 0; | |
34dc7c2f | 5448 | |
b128c09f | 5449 | spa_config_exit(spa, SCL_CONFIG, FTAG); |
34dc7c2f | 5450 | |
428870ff BB |
5451 | spa_handle_ignored_writes(spa); |
5452 | ||
34dc7c2f BB |
5453 | /* |
5454 | * If any async tasks have been requested, kick them off. | |
5455 | */ | |
5456 | spa_async_dispatch(spa); | |
5457 | } | |
5458 | ||
5459 | /* | |
5460 | * Sync all pools. We don't want to hold the namespace lock across these | |
5461 | * operations, so we take a reference on the spa_t and drop the lock during the | |
5462 | * sync. | |
5463 | */ | |
5464 | void | |
5465 | spa_sync_allpools(void) | |
5466 | { | |
5467 | spa_t *spa = NULL; | |
5468 | mutex_enter(&spa_namespace_lock); | |
5469 | while ((spa = spa_next(spa)) != NULL) { | |
b128c09f | 5470 | if (spa_state(spa) != POOL_STATE_ACTIVE || spa_suspended(spa)) |
34dc7c2f BB |
5471 | continue; |
5472 | spa_open_ref(spa, FTAG); | |
5473 | mutex_exit(&spa_namespace_lock); | |
5474 | txg_wait_synced(spa_get_dsl(spa), 0); | |
5475 | mutex_enter(&spa_namespace_lock); | |
5476 | spa_close(spa, FTAG); | |
5477 | } | |
5478 | mutex_exit(&spa_namespace_lock); | |
5479 | } | |
5480 | ||
5481 | /* | |
5482 | * ========================================================================== | |
5483 | * Miscellaneous routines | |
5484 | * ========================================================================== | |
5485 | */ | |
5486 | ||
5487 | /* | |
5488 | * Remove all pools in the system. | |
5489 | */ | |
5490 | void | |
5491 | spa_evict_all(void) | |
5492 | { | |
5493 | spa_t *spa; | |
5494 | ||
5495 | /* | |
5496 | * Remove all cached state. All pools should be closed now, | |
5497 | * so every spa in the AVL tree should be unreferenced. | |
5498 | */ | |
5499 | mutex_enter(&spa_namespace_lock); | |
5500 | while ((spa = spa_next(NULL)) != NULL) { | |
5501 | /* | |
5502 | * Stop async tasks. The async thread may need to detach | |
5503 | * a device that's been replaced, which requires grabbing | |
5504 | * spa_namespace_lock, so we must drop it here. | |
5505 | */ | |
5506 | spa_open_ref(spa, FTAG); | |
5507 | mutex_exit(&spa_namespace_lock); | |
5508 | spa_async_suspend(spa); | |
5509 | mutex_enter(&spa_namespace_lock); | |
34dc7c2f BB |
5510 | spa_close(spa, FTAG); |
5511 | ||
5512 | if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
5513 | spa_unload(spa); | |
5514 | spa_deactivate(spa); | |
5515 | } | |
5516 | spa_remove(spa); | |
5517 | } | |
5518 | mutex_exit(&spa_namespace_lock); | |
5519 | } | |
5520 | ||
5521 | vdev_t * | |
9babb374 | 5522 | spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux) |
34dc7c2f | 5523 | { |
b128c09f BB |
5524 | vdev_t *vd; |
5525 | int i; | |
5526 | ||
5527 | if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL) | |
5528 | return (vd); | |
5529 | ||
9babb374 | 5530 | if (aux) { |
b128c09f BB |
5531 | for (i = 0; i < spa->spa_l2cache.sav_count; i++) { |
5532 | vd = spa->spa_l2cache.sav_vdevs[i]; | |
9babb374 BB |
5533 | if (vd->vdev_guid == guid) |
5534 | return (vd); | |
5535 | } | |
5536 | ||
5537 | for (i = 0; i < spa->spa_spares.sav_count; i++) { | |
5538 | vd = spa->spa_spares.sav_vdevs[i]; | |
b128c09f BB |
5539 | if (vd->vdev_guid == guid) |
5540 | return (vd); | |
5541 | } | |
5542 | } | |
5543 | ||
5544 | return (NULL); | |
34dc7c2f BB |
5545 | } |
5546 | ||
5547 | void | |
5548 | spa_upgrade(spa_t *spa, uint64_t version) | |
5549 | { | |
b128c09f | 5550 | spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); |
34dc7c2f BB |
5551 | |
5552 | /* | |
5553 | * This should only be called for a non-faulted pool, and since a | |
5554 | * future version would result in an unopenable pool, this shouldn't be | |
5555 | * possible. | |
5556 | */ | |
5557 | ASSERT(spa->spa_uberblock.ub_version <= SPA_VERSION); | |
5558 | ASSERT(version >= spa->spa_uberblock.ub_version); | |
5559 | ||
5560 | spa->spa_uberblock.ub_version = version; | |
5561 | vdev_config_dirty(spa->spa_root_vdev); | |
5562 | ||
b128c09f | 5563 | spa_config_exit(spa, SCL_ALL, FTAG); |
34dc7c2f BB |
5564 | |
5565 | txg_wait_synced(spa_get_dsl(spa), 0); | |
5566 | } | |
5567 | ||
5568 | boolean_t | |
5569 | spa_has_spare(spa_t *spa, uint64_t guid) | |
5570 | { | |
5571 | int i; | |
5572 | uint64_t spareguid; | |
5573 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
5574 | ||
5575 | for (i = 0; i < sav->sav_count; i++) | |
5576 | if (sav->sav_vdevs[i]->vdev_guid == guid) | |
5577 | return (B_TRUE); | |
5578 | ||
5579 | for (i = 0; i < sav->sav_npending; i++) { | |
5580 | if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID, | |
5581 | &spareguid) == 0 && spareguid == guid) | |
5582 | return (B_TRUE); | |
5583 | } | |
5584 | ||
5585 | return (B_FALSE); | |
5586 | } | |
5587 | ||
b128c09f BB |
5588 | /* |
5589 | * Check if a pool has an active shared spare device. | |
5590 | * Note: reference count of an active spare is 2, as a spare and as a replace | |
5591 | */ | |
5592 | static boolean_t | |
5593 | spa_has_active_shared_spare(spa_t *spa) | |
5594 | { | |
5595 | int i, refcnt; | |
5596 | uint64_t pool; | |
5597 | spa_aux_vdev_t *sav = &spa->spa_spares; | |
5598 | ||
5599 | for (i = 0; i < sav->sav_count; i++) { | |
5600 | if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool, | |
5601 | &refcnt) && pool != 0ULL && pool == spa_guid(spa) && | |
5602 | refcnt > 2) | |
5603 | return (B_TRUE); | |
5604 | } | |
5605 | ||
5606 | return (B_FALSE); | |
5607 | } | |
5608 | ||
34dc7c2f BB |
5609 | /* |
5610 | * Post a sysevent corresponding to the given event. The 'name' must be one of | |
5611 | * the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
5612 | * filled in from the spa and (optionally) the vdev. This doesn't do anything | |
5613 | * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
5614 | * or zdb as real changes. | |
5615 | */ | |
5616 | void | |
5617 | spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
5618 | { | |
5619 | #ifdef _KERNEL | |
5620 | sysevent_t *ev; | |
5621 | sysevent_attr_list_t *attr = NULL; | |
5622 | sysevent_value_t value; | |
5623 | sysevent_id_t eid; | |
5624 | ||
5625 | ev = sysevent_alloc(EC_ZFS, (char *)name, SUNW_KERN_PUB "zfs", | |
5626 | SE_SLEEP); | |
5627 | ||
5628 | value.value_type = SE_DATA_TYPE_STRING; | |
5629 | value.value.sv_string = spa_name(spa); | |
5630 | if (sysevent_add_attr(&attr, ZFS_EV_POOL_NAME, &value, SE_SLEEP) != 0) | |
5631 | goto done; | |
5632 | ||
5633 | value.value_type = SE_DATA_TYPE_UINT64; | |
5634 | value.value.sv_uint64 = spa_guid(spa); | |
5635 | if (sysevent_add_attr(&attr, ZFS_EV_POOL_GUID, &value, SE_SLEEP) != 0) | |
5636 | goto done; | |
5637 | ||
5638 | if (vd) { | |
5639 | value.value_type = SE_DATA_TYPE_UINT64; | |
5640 | value.value.sv_uint64 = vd->vdev_guid; | |
5641 | if (sysevent_add_attr(&attr, ZFS_EV_VDEV_GUID, &value, | |
5642 | SE_SLEEP) != 0) | |
5643 | goto done; | |
5644 | ||
5645 | if (vd->vdev_path) { | |
5646 | value.value_type = SE_DATA_TYPE_STRING; | |
5647 | value.value.sv_string = vd->vdev_path; | |
5648 | if (sysevent_add_attr(&attr, ZFS_EV_VDEV_PATH, | |
5649 | &value, SE_SLEEP) != 0) | |
5650 | goto done; | |
5651 | } | |
5652 | } | |
5653 | ||
5654 | if (sysevent_attach_attributes(ev, attr) != 0) | |
5655 | goto done; | |
5656 | attr = NULL; | |
5657 | ||
5658 | (void) log_sysevent(ev, SE_SLEEP, &eid); | |
5659 | ||
5660 | done: | |
5661 | if (attr) | |
5662 | sysevent_free_attr(attr); | |
5663 | sysevent_free(ev); | |
5664 | #endif | |
5665 | } |