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Commit | Line | Data |
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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. |
74d42600 | 24 | * Copyright (c) 2011, 2018 by Delphix. All rights reserved. |
153b2285 | 25 | * Copyright 2017 Nexenta Systems, Inc. |
e550644f BB |
26 | * Copyright (c) 2014 Integros [integros.com] |
27 | * Copyright 2016 Toomas Soome <tsoome@me.com> | |
12fa0466 | 28 | * Copyright 2017 Joyent, Inc. |
34dc7c2f BB |
29 | */ |
30 | ||
34dc7c2f BB |
31 | #include <sys/zfs_context.h> |
32 | #include <sys/fm/fs/zfs.h> | |
33 | #include <sys/spa.h> | |
34 | #include <sys/spa_impl.h> | |
a1d477c2 | 35 | #include <sys/bpobj.h> |
34dc7c2f BB |
36 | #include <sys/dmu.h> |
37 | #include <sys/dmu_tx.h> | |
a1d477c2 | 38 | #include <sys/dsl_dir.h> |
34dc7c2f BB |
39 | #include <sys/vdev_impl.h> |
40 | #include <sys/uberblock_impl.h> | |
41 | #include <sys/metaslab.h> | |
42 | #include <sys/metaslab_impl.h> | |
43 | #include <sys/space_map.h> | |
93cf2076 | 44 | #include <sys/space_reftree.h> |
34dc7c2f BB |
45 | #include <sys/zio.h> |
46 | #include <sys/zap.h> | |
47 | #include <sys/fs/zfs.h> | |
b128c09f | 48 | #include <sys/arc.h> |
9babb374 | 49 | #include <sys/zil.h> |
428870ff | 50 | #include <sys/dsl_scan.h> |
a6255b7f | 51 | #include <sys/abd.h> |
6c285672 | 52 | #include <sys/zvol.h> |
6078881a | 53 | #include <sys/zfs_ratelimit.h> |
34dc7c2f | 54 | |
e4e94ca3 | 55 | /* target number of metaslabs per top-level vdev */ |
d2734cce SD |
56 | int vdev_max_ms_count = 200; |
57 | ||
e4e94ca3 | 58 | /* minimum number of metaslabs per top-level vdev */ |
d2734cce SD |
59 | int vdev_min_ms_count = 16; |
60 | ||
e4e94ca3 DB |
61 | /* practical upper limit of total metaslabs per top-level vdev */ |
62 | int vdev_ms_count_limit = 1ULL << 17; | |
63 | ||
64 | /* lower limit for metaslab size (512M) */ | |
d2734cce SD |
65 | int vdev_default_ms_shift = 29; |
66 | ||
e4e94ca3 DB |
67 | /* upper limit for metaslab size (256G) */ |
68 | int vdev_max_ms_shift = 38; | |
69 | ||
d2734cce SD |
70 | int vdev_validate_skip = B_FALSE; |
71 | ||
b8bcca18 | 72 | /* |
d2734cce SD |
73 | * Since the DTL space map of a vdev is not expected to have a lot of |
74 | * entries, we default its block size to 4K. | |
b8bcca18 | 75 | */ |
d2734cce | 76 | int vdev_dtl_sm_blksz = (1 << 12); |
b8bcca18 | 77 | |
80d52c39 TH |
78 | /* |
79 | * Rate limit delay events to this many IO delays per second. | |
80 | */ | |
81 | unsigned int zfs_delays_per_second = 20; | |
82 | ||
83 | /* | |
84 | * Rate limit checksum events after this many checksum errors per second. | |
85 | */ | |
86 | unsigned int zfs_checksums_per_second = 20; | |
87 | ||
02638a30 TC |
88 | /* |
89 | * Ignore errors during scrub/resilver. Allows to work around resilver | |
90 | * upon import when there are pool errors. | |
91 | */ | |
92 | int zfs_scan_ignore_errors = 0; | |
93 | ||
d2734cce SD |
94 | /* |
95 | * vdev-wide space maps that have lots of entries written to them at | |
96 | * the end of each transaction can benefit from a higher I/O bandwidth | |
97 | * (e.g. vdev_obsolete_sm), thus we default their block size to 128K. | |
98 | */ | |
99 | int vdev_standard_sm_blksz = (1 << 17); | |
6cb8e530 | 100 | |
4a0ee12a PZ |
101 | /*PRINTFLIKE2*/ |
102 | void | |
103 | vdev_dbgmsg(vdev_t *vd, const char *fmt, ...) | |
104 | { | |
105 | va_list adx; | |
106 | char buf[256]; | |
107 | ||
108 | va_start(adx, fmt); | |
109 | (void) vsnprintf(buf, sizeof (buf), fmt, adx); | |
110 | va_end(adx); | |
111 | ||
112 | if (vd->vdev_path != NULL) { | |
113 | zfs_dbgmsg("%s vdev '%s': %s", vd->vdev_ops->vdev_op_type, | |
114 | vd->vdev_path, buf); | |
115 | } else { | |
116 | zfs_dbgmsg("%s-%llu vdev (guid %llu): %s", | |
117 | vd->vdev_ops->vdev_op_type, | |
118 | (u_longlong_t)vd->vdev_id, | |
119 | (u_longlong_t)vd->vdev_guid, buf); | |
120 | } | |
121 | } | |
122 | ||
6cb8e530 PZ |
123 | void |
124 | vdev_dbgmsg_print_tree(vdev_t *vd, int indent) | |
125 | { | |
126 | char state[20]; | |
127 | ||
128 | if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) { | |
129 | zfs_dbgmsg("%*svdev %u: %s", indent, "", vd->vdev_id, | |
130 | vd->vdev_ops->vdev_op_type); | |
131 | return; | |
132 | } | |
133 | ||
134 | switch (vd->vdev_state) { | |
135 | case VDEV_STATE_UNKNOWN: | |
136 | (void) snprintf(state, sizeof (state), "unknown"); | |
137 | break; | |
138 | case VDEV_STATE_CLOSED: | |
139 | (void) snprintf(state, sizeof (state), "closed"); | |
140 | break; | |
141 | case VDEV_STATE_OFFLINE: | |
142 | (void) snprintf(state, sizeof (state), "offline"); | |
143 | break; | |
144 | case VDEV_STATE_REMOVED: | |
145 | (void) snprintf(state, sizeof (state), "removed"); | |
146 | break; | |
147 | case VDEV_STATE_CANT_OPEN: | |
148 | (void) snprintf(state, sizeof (state), "can't open"); | |
149 | break; | |
150 | case VDEV_STATE_FAULTED: | |
151 | (void) snprintf(state, sizeof (state), "faulted"); | |
152 | break; | |
153 | case VDEV_STATE_DEGRADED: | |
154 | (void) snprintf(state, sizeof (state), "degraded"); | |
155 | break; | |
156 | case VDEV_STATE_HEALTHY: | |
157 | (void) snprintf(state, sizeof (state), "healthy"); | |
158 | break; | |
159 | default: | |
160 | (void) snprintf(state, sizeof (state), "<state %u>", | |
161 | (uint_t)vd->vdev_state); | |
162 | } | |
163 | ||
164 | zfs_dbgmsg("%*svdev %u: %s%s, guid: %llu, path: %s, %s", indent, | |
e902ddb0 | 165 | "", (int)vd->vdev_id, vd->vdev_ops->vdev_op_type, |
6cb8e530 PZ |
166 | vd->vdev_islog ? " (log)" : "", |
167 | (u_longlong_t)vd->vdev_guid, | |
168 | vd->vdev_path ? vd->vdev_path : "N/A", state); | |
169 | ||
170 | for (uint64_t i = 0; i < vd->vdev_children; i++) | |
171 | vdev_dbgmsg_print_tree(vd->vdev_child[i], indent + 2); | |
172 | } | |
173 | ||
34dc7c2f BB |
174 | /* |
175 | * Virtual device management. | |
176 | */ | |
177 | ||
178 | static vdev_ops_t *vdev_ops_table[] = { | |
179 | &vdev_root_ops, | |
180 | &vdev_raidz_ops, | |
181 | &vdev_mirror_ops, | |
182 | &vdev_replacing_ops, | |
183 | &vdev_spare_ops, | |
184 | &vdev_disk_ops, | |
185 | &vdev_file_ops, | |
186 | &vdev_missing_ops, | |
428870ff | 187 | &vdev_hole_ops, |
a1d477c2 | 188 | &vdev_indirect_ops, |
34dc7c2f BB |
189 | NULL |
190 | }; | |
191 | ||
34dc7c2f BB |
192 | /* |
193 | * Given a vdev type, return the appropriate ops vector. | |
194 | */ | |
195 | static vdev_ops_t * | |
196 | vdev_getops(const char *type) | |
197 | { | |
198 | vdev_ops_t *ops, **opspp; | |
199 | ||
200 | for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++) | |
201 | if (strcmp(ops->vdev_op_type, type) == 0) | |
202 | break; | |
203 | ||
204 | return (ops); | |
205 | } | |
206 | ||
207 | /* | |
208 | * Default asize function: return the MAX of psize with the asize of | |
209 | * all children. This is what's used by anything other than RAID-Z. | |
210 | */ | |
211 | uint64_t | |
212 | vdev_default_asize(vdev_t *vd, uint64_t psize) | |
213 | { | |
214 | uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift); | |
215 | uint64_t csize; | |
34dc7c2f | 216 | |
1c27024e | 217 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
218 | csize = vdev_psize_to_asize(vd->vdev_child[c], psize); |
219 | asize = MAX(asize, csize); | |
220 | } | |
221 | ||
222 | return (asize); | |
223 | } | |
224 | ||
225 | /* | |
9babb374 BB |
226 | * Get the minimum allocatable size. We define the allocatable size as |
227 | * the vdev's asize rounded to the nearest metaslab. This allows us to | |
228 | * replace or attach devices which don't have the same physical size but | |
229 | * can still satisfy the same number of allocations. | |
34dc7c2f BB |
230 | */ |
231 | uint64_t | |
9babb374 | 232 | vdev_get_min_asize(vdev_t *vd) |
34dc7c2f | 233 | { |
9babb374 | 234 | vdev_t *pvd = vd->vdev_parent; |
34dc7c2f | 235 | |
9babb374 | 236 | /* |
1bd201e7 | 237 | * If our parent is NULL (inactive spare or cache) or is the root, |
9babb374 BB |
238 | * just return our own asize. |
239 | */ | |
240 | if (pvd == NULL) | |
241 | return (vd->vdev_asize); | |
34dc7c2f BB |
242 | |
243 | /* | |
9babb374 BB |
244 | * The top-level vdev just returns the allocatable size rounded |
245 | * to the nearest metaslab. | |
34dc7c2f | 246 | */ |
9babb374 BB |
247 | if (vd == vd->vdev_top) |
248 | return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift)); | |
34dc7c2f | 249 | |
9babb374 BB |
250 | /* |
251 | * The allocatable space for a raidz vdev is N * sizeof(smallest child), | |
252 | * so each child must provide at least 1/Nth of its asize. | |
253 | */ | |
254 | if (pvd->vdev_ops == &vdev_raidz_ops) | |
2e215fec SH |
255 | return ((pvd->vdev_min_asize + pvd->vdev_children - 1) / |
256 | pvd->vdev_children); | |
34dc7c2f | 257 | |
9babb374 BB |
258 | return (pvd->vdev_min_asize); |
259 | } | |
260 | ||
261 | void | |
262 | vdev_set_min_asize(vdev_t *vd) | |
263 | { | |
264 | vd->vdev_min_asize = vdev_get_min_asize(vd); | |
34dc7c2f | 265 | |
1c27024e | 266 | for (int c = 0; c < vd->vdev_children; c++) |
9babb374 | 267 | vdev_set_min_asize(vd->vdev_child[c]); |
34dc7c2f BB |
268 | } |
269 | ||
270 | vdev_t * | |
271 | vdev_lookup_top(spa_t *spa, uint64_t vdev) | |
272 | { | |
273 | vdev_t *rvd = spa->spa_root_vdev; | |
274 | ||
b128c09f | 275 | ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); |
34dc7c2f | 276 | |
b128c09f BB |
277 | if (vdev < rvd->vdev_children) { |
278 | ASSERT(rvd->vdev_child[vdev] != NULL); | |
34dc7c2f | 279 | return (rvd->vdev_child[vdev]); |
b128c09f | 280 | } |
34dc7c2f BB |
281 | |
282 | return (NULL); | |
283 | } | |
284 | ||
285 | vdev_t * | |
286 | vdev_lookup_by_guid(vdev_t *vd, uint64_t guid) | |
287 | { | |
34dc7c2f BB |
288 | vdev_t *mvd; |
289 | ||
290 | if (vd->vdev_guid == guid) | |
291 | return (vd); | |
292 | ||
1c27024e | 293 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
294 | if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) != |
295 | NULL) | |
296 | return (mvd); | |
297 | ||
298 | return (NULL); | |
299 | } | |
300 | ||
9c43027b AJ |
301 | static int |
302 | vdev_count_leaves_impl(vdev_t *vd) | |
303 | { | |
304 | int n = 0; | |
9c43027b AJ |
305 | |
306 | if (vd->vdev_ops->vdev_op_leaf) | |
307 | return (1); | |
308 | ||
1c27024e | 309 | for (int c = 0; c < vd->vdev_children; c++) |
9c43027b AJ |
310 | n += vdev_count_leaves_impl(vd->vdev_child[c]); |
311 | ||
312 | return (n); | |
313 | } | |
314 | ||
315 | int | |
316 | vdev_count_leaves(spa_t *spa) | |
317 | { | |
743253df OF |
318 | int rc; |
319 | ||
320 | spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); | |
321 | rc = vdev_count_leaves_impl(spa->spa_root_vdev); | |
322 | spa_config_exit(spa, SCL_VDEV, FTAG); | |
323 | ||
324 | return (rc); | |
9c43027b AJ |
325 | } |
326 | ||
34dc7c2f BB |
327 | void |
328 | vdev_add_child(vdev_t *pvd, vdev_t *cvd) | |
329 | { | |
330 | size_t oldsize, newsize; | |
331 | uint64_t id = cvd->vdev_id; | |
332 | vdev_t **newchild; | |
333 | ||
44de2f02 | 334 | ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
335 | ASSERT(cvd->vdev_parent == NULL); |
336 | ||
337 | cvd->vdev_parent = pvd; | |
338 | ||
339 | if (pvd == NULL) | |
340 | return; | |
341 | ||
342 | ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL); | |
343 | ||
344 | oldsize = pvd->vdev_children * sizeof (vdev_t *); | |
345 | pvd->vdev_children = MAX(pvd->vdev_children, id + 1); | |
346 | newsize = pvd->vdev_children * sizeof (vdev_t *); | |
347 | ||
79c76d5b | 348 | newchild = kmem_alloc(newsize, KM_SLEEP); |
34dc7c2f BB |
349 | if (pvd->vdev_child != NULL) { |
350 | bcopy(pvd->vdev_child, newchild, oldsize); | |
351 | kmem_free(pvd->vdev_child, oldsize); | |
352 | } | |
353 | ||
354 | pvd->vdev_child = newchild; | |
355 | pvd->vdev_child[id] = cvd; | |
356 | ||
357 | cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd); | |
358 | ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL); | |
359 | ||
360 | /* | |
361 | * Walk up all ancestors to update guid sum. | |
362 | */ | |
363 | for (; pvd != NULL; pvd = pvd->vdev_parent) | |
364 | pvd->vdev_guid_sum += cvd->vdev_guid_sum; | |
34dc7c2f BB |
365 | } |
366 | ||
367 | void | |
368 | vdev_remove_child(vdev_t *pvd, vdev_t *cvd) | |
369 | { | |
370 | int c; | |
371 | uint_t id = cvd->vdev_id; | |
372 | ||
373 | ASSERT(cvd->vdev_parent == pvd); | |
374 | ||
375 | if (pvd == NULL) | |
376 | return; | |
377 | ||
378 | ASSERT(id < pvd->vdev_children); | |
379 | ASSERT(pvd->vdev_child[id] == cvd); | |
380 | ||
381 | pvd->vdev_child[id] = NULL; | |
382 | cvd->vdev_parent = NULL; | |
383 | ||
384 | for (c = 0; c < pvd->vdev_children; c++) | |
385 | if (pvd->vdev_child[c]) | |
386 | break; | |
387 | ||
388 | if (c == pvd->vdev_children) { | |
389 | kmem_free(pvd->vdev_child, c * sizeof (vdev_t *)); | |
390 | pvd->vdev_child = NULL; | |
391 | pvd->vdev_children = 0; | |
392 | } | |
393 | ||
394 | /* | |
395 | * Walk up all ancestors to update guid sum. | |
396 | */ | |
397 | for (; pvd != NULL; pvd = pvd->vdev_parent) | |
398 | pvd->vdev_guid_sum -= cvd->vdev_guid_sum; | |
34dc7c2f BB |
399 | } |
400 | ||
401 | /* | |
402 | * Remove any holes in the child array. | |
403 | */ | |
404 | void | |
405 | vdev_compact_children(vdev_t *pvd) | |
406 | { | |
407 | vdev_t **newchild, *cvd; | |
408 | int oldc = pvd->vdev_children; | |
9babb374 | 409 | int newc; |
34dc7c2f | 410 | |
b128c09f | 411 | ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f | 412 | |
a1d477c2 MA |
413 | if (oldc == 0) |
414 | return; | |
415 | ||
1c27024e | 416 | for (int c = newc = 0; c < oldc; c++) |
34dc7c2f BB |
417 | if (pvd->vdev_child[c]) |
418 | newc++; | |
419 | ||
a1d477c2 MA |
420 | if (newc > 0) { |
421 | newchild = kmem_zalloc(newc * sizeof (vdev_t *), KM_SLEEP); | |
34dc7c2f | 422 | |
a1d477c2 MA |
423 | for (int c = newc = 0; c < oldc; c++) { |
424 | if ((cvd = pvd->vdev_child[c]) != NULL) { | |
425 | newchild[newc] = cvd; | |
426 | cvd->vdev_id = newc++; | |
427 | } | |
34dc7c2f | 428 | } |
a1d477c2 MA |
429 | } else { |
430 | newchild = NULL; | |
34dc7c2f BB |
431 | } |
432 | ||
433 | kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *)); | |
434 | pvd->vdev_child = newchild; | |
435 | pvd->vdev_children = newc; | |
436 | } | |
437 | ||
438 | /* | |
439 | * Allocate and minimally initialize a vdev_t. | |
440 | */ | |
428870ff | 441 | vdev_t * |
34dc7c2f BB |
442 | vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops) |
443 | { | |
444 | vdev_t *vd; | |
a1d477c2 | 445 | vdev_indirect_config_t *vic; |
34dc7c2f | 446 | |
79c76d5b | 447 | vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP); |
a1d477c2 | 448 | vic = &vd->vdev_indirect_config; |
34dc7c2f BB |
449 | |
450 | if (spa->spa_root_vdev == NULL) { | |
451 | ASSERT(ops == &vdev_root_ops); | |
452 | spa->spa_root_vdev = vd; | |
3541dc6d | 453 | spa->spa_load_guid = spa_generate_guid(NULL); |
34dc7c2f BB |
454 | } |
455 | ||
428870ff | 456 | if (guid == 0 && ops != &vdev_hole_ops) { |
34dc7c2f BB |
457 | if (spa->spa_root_vdev == vd) { |
458 | /* | |
459 | * The root vdev's guid will also be the pool guid, | |
460 | * which must be unique among all pools. | |
461 | */ | |
428870ff | 462 | guid = spa_generate_guid(NULL); |
34dc7c2f BB |
463 | } else { |
464 | /* | |
465 | * Any other vdev's guid must be unique within the pool. | |
466 | */ | |
428870ff | 467 | guid = spa_generate_guid(spa); |
34dc7c2f BB |
468 | } |
469 | ASSERT(!spa_guid_exists(spa_guid(spa), guid)); | |
470 | } | |
471 | ||
472 | vd->vdev_spa = spa; | |
473 | vd->vdev_id = id; | |
474 | vd->vdev_guid = guid; | |
475 | vd->vdev_guid_sum = guid; | |
476 | vd->vdev_ops = ops; | |
477 | vd->vdev_state = VDEV_STATE_CLOSED; | |
428870ff | 478 | vd->vdev_ishole = (ops == &vdev_hole_ops); |
a1d477c2 MA |
479 | vic->vic_prev_indirect_vdev = UINT64_MAX; |
480 | ||
481 | rw_init(&vd->vdev_indirect_rwlock, NULL, RW_DEFAULT, NULL); | |
482 | mutex_init(&vd->vdev_obsolete_lock, NULL, MUTEX_DEFAULT, NULL); | |
483 | vd->vdev_obsolete_segments = range_tree_create(NULL, NULL); | |
34dc7c2f | 484 | |
6078881a TH |
485 | /* |
486 | * Initialize rate limit structs for events. We rate limit ZIO delay | |
487 | * and checksum events so that we don't overwhelm ZED with thousands | |
488 | * of events when a disk is acting up. | |
489 | */ | |
80d52c39 TH |
490 | zfs_ratelimit_init(&vd->vdev_delay_rl, &zfs_delays_per_second, 1); |
491 | zfs_ratelimit_init(&vd->vdev_checksum_rl, &zfs_checksums_per_second, 1); | |
6078881a | 492 | |
98f72a53 BB |
493 | list_link_init(&vd->vdev_config_dirty_node); |
494 | list_link_init(&vd->vdev_state_dirty_node); | |
448d7aaa | 495 | mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_NOLOCKDEP, NULL); |
34dc7c2f | 496 | mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL); |
b128c09f | 497 | mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL); |
3dfb57a3 | 498 | mutex_init(&vd->vdev_queue_lock, NULL, MUTEX_DEFAULT, NULL); |
d4a72f23 | 499 | mutex_init(&vd->vdev_scan_io_queue_lock, NULL, MUTEX_DEFAULT, NULL); |
6078881a | 500 | |
1c27024e | 501 | for (int t = 0; t < DTL_TYPES; t++) { |
a1d477c2 | 502 | vd->vdev_dtl[t] = range_tree_create(NULL, NULL); |
fb5f0bc8 | 503 | } |
4747a7d3 | 504 | txg_list_create(&vd->vdev_ms_list, spa, |
34dc7c2f | 505 | offsetof(struct metaslab, ms_txg_node)); |
4747a7d3 | 506 | txg_list_create(&vd->vdev_dtl_list, spa, |
34dc7c2f BB |
507 | offsetof(struct vdev, vdev_dtl_node)); |
508 | vd->vdev_stat.vs_timestamp = gethrtime(); | |
509 | vdev_queue_init(vd); | |
510 | vdev_cache_init(vd); | |
511 | ||
512 | return (vd); | |
513 | } | |
514 | ||
515 | /* | |
516 | * Allocate a new vdev. The 'alloctype' is used to control whether we are | |
517 | * creating a new vdev or loading an existing one - the behavior is slightly | |
518 | * different for each case. | |
519 | */ | |
520 | int | |
521 | vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id, | |
522 | int alloctype) | |
523 | { | |
524 | vdev_ops_t *ops; | |
525 | char *type; | |
526 | uint64_t guid = 0, islog, nparity; | |
527 | vdev_t *vd; | |
a1d477c2 | 528 | vdev_indirect_config_t *vic; |
4a283c7f TH |
529 | char *tmp = NULL; |
530 | int rc; | |
34dc7c2f | 531 | |
b128c09f | 532 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
533 | |
534 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) | |
2e528b49 | 535 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
536 | |
537 | if ((ops = vdev_getops(type)) == NULL) | |
2e528b49 | 538 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
539 | |
540 | /* | |
541 | * If this is a load, get the vdev guid from the nvlist. | |
542 | * Otherwise, vdev_alloc_common() will generate one for us. | |
543 | */ | |
544 | if (alloctype == VDEV_ALLOC_LOAD) { | |
545 | uint64_t label_id; | |
546 | ||
547 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) || | |
548 | label_id != id) | |
2e528b49 | 549 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
550 | |
551 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 552 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
553 | } else if (alloctype == VDEV_ALLOC_SPARE) { |
554 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 555 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
556 | } else if (alloctype == VDEV_ALLOC_L2CACHE) { |
557 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 558 | return (SET_ERROR(EINVAL)); |
9babb374 BB |
559 | } else if (alloctype == VDEV_ALLOC_ROOTPOOL) { |
560 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 561 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
562 | } |
563 | ||
564 | /* | |
565 | * The first allocated vdev must be of type 'root'. | |
566 | */ | |
567 | if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL) | |
2e528b49 | 568 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
569 | |
570 | /* | |
571 | * Determine whether we're a log vdev. | |
572 | */ | |
573 | islog = 0; | |
574 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog); | |
575 | if (islog && spa_version(spa) < SPA_VERSION_SLOGS) | |
2e528b49 | 576 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f | 577 | |
428870ff | 578 | if (ops == &vdev_hole_ops && spa_version(spa) < SPA_VERSION_HOLES) |
2e528b49 | 579 | return (SET_ERROR(ENOTSUP)); |
428870ff | 580 | |
34dc7c2f BB |
581 | /* |
582 | * Set the nparity property for RAID-Z vdevs. | |
583 | */ | |
584 | nparity = -1ULL; | |
585 | if (ops == &vdev_raidz_ops) { | |
586 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, | |
587 | &nparity) == 0) { | |
428870ff | 588 | if (nparity == 0 || nparity > VDEV_RAIDZ_MAXPARITY) |
2e528b49 | 589 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 590 | /* |
45d1cae3 BB |
591 | * Previous versions could only support 1 or 2 parity |
592 | * device. | |
34dc7c2f | 593 | */ |
45d1cae3 BB |
594 | if (nparity > 1 && |
595 | spa_version(spa) < SPA_VERSION_RAIDZ2) | |
2e528b49 | 596 | return (SET_ERROR(ENOTSUP)); |
45d1cae3 BB |
597 | if (nparity > 2 && |
598 | spa_version(spa) < SPA_VERSION_RAIDZ3) | |
2e528b49 | 599 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
600 | } else { |
601 | /* | |
602 | * We require the parity to be specified for SPAs that | |
603 | * support multiple parity levels. | |
604 | */ | |
45d1cae3 | 605 | if (spa_version(spa) >= SPA_VERSION_RAIDZ2) |
2e528b49 | 606 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
607 | /* |
608 | * Otherwise, we default to 1 parity device for RAID-Z. | |
609 | */ | |
610 | nparity = 1; | |
611 | } | |
612 | } else { | |
613 | nparity = 0; | |
614 | } | |
615 | ASSERT(nparity != -1ULL); | |
616 | ||
617 | vd = vdev_alloc_common(spa, id, guid, ops); | |
a1d477c2 | 618 | vic = &vd->vdev_indirect_config; |
34dc7c2f BB |
619 | |
620 | vd->vdev_islog = islog; | |
621 | vd->vdev_nparity = nparity; | |
622 | ||
623 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &vd->vdev_path) == 0) | |
624 | vd->vdev_path = spa_strdup(vd->vdev_path); | |
4a283c7f TH |
625 | |
626 | /* | |
627 | * ZPOOL_CONFIG_AUX_STATE = "external" means we previously forced a | |
628 | * fault on a vdev and want it to persist across imports (like with | |
629 | * zpool offline -f). | |
630 | */ | |
631 | rc = nvlist_lookup_string(nv, ZPOOL_CONFIG_AUX_STATE, &tmp); | |
632 | if (rc == 0 && tmp != NULL && strcmp(tmp, "external") == 0) { | |
633 | vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL; | |
634 | vd->vdev_faulted = 1; | |
635 | vd->vdev_label_aux = VDEV_AUX_EXTERNAL; | |
636 | } | |
637 | ||
34dc7c2f BB |
638 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &vd->vdev_devid) == 0) |
639 | vd->vdev_devid = spa_strdup(vd->vdev_devid); | |
640 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH, | |
641 | &vd->vdev_physpath) == 0) | |
642 | vd->vdev_physpath = spa_strdup(vd->vdev_physpath); | |
1bbd8770 TH |
643 | |
644 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH, | |
645 | &vd->vdev_enc_sysfs_path) == 0) | |
646 | vd->vdev_enc_sysfs_path = spa_strdup(vd->vdev_enc_sysfs_path); | |
647 | ||
9babb374 BB |
648 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &vd->vdev_fru) == 0) |
649 | vd->vdev_fru = spa_strdup(vd->vdev_fru); | |
34dc7c2f BB |
650 | |
651 | /* | |
652 | * Set the whole_disk property. If it's not specified, leave the value | |
653 | * as -1. | |
654 | */ | |
655 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, | |
656 | &vd->vdev_wholedisk) != 0) | |
657 | vd->vdev_wholedisk = -1ULL; | |
658 | ||
a1d477c2 MA |
659 | ASSERT0(vic->vic_mapping_object); |
660 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_OBJECT, | |
661 | &vic->vic_mapping_object); | |
662 | ASSERT0(vic->vic_births_object); | |
663 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_BIRTHS, | |
664 | &vic->vic_births_object); | |
665 | ASSERT3U(vic->vic_prev_indirect_vdev, ==, UINT64_MAX); | |
666 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_PREV_INDIRECT_VDEV, | |
667 | &vic->vic_prev_indirect_vdev); | |
668 | ||
34dc7c2f BB |
669 | /* |
670 | * Look for the 'not present' flag. This will only be set if the device | |
671 | * was not present at the time of import. | |
672 | */ | |
9babb374 BB |
673 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, |
674 | &vd->vdev_not_present); | |
34dc7c2f BB |
675 | |
676 | /* | |
677 | * Get the alignment requirement. | |
678 | */ | |
679 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &vd->vdev_ashift); | |
680 | ||
428870ff BB |
681 | /* |
682 | * Retrieve the vdev creation time. | |
683 | */ | |
684 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_CREATE_TXG, | |
685 | &vd->vdev_crtxg); | |
686 | ||
34dc7c2f BB |
687 | /* |
688 | * If we're a top-level vdev, try to load the allocation parameters. | |
689 | */ | |
428870ff BB |
690 | if (parent && !parent->vdev_parent && |
691 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { | |
34dc7c2f BB |
692 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY, |
693 | &vd->vdev_ms_array); | |
694 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT, | |
695 | &vd->vdev_ms_shift); | |
696 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE, | |
697 | &vd->vdev_asize); | |
428870ff BB |
698 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVING, |
699 | &vd->vdev_removing); | |
e0ab3ab5 JS |
700 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP, |
701 | &vd->vdev_top_zap); | |
702 | } else { | |
703 | ASSERT0(vd->vdev_top_zap); | |
428870ff BB |
704 | } |
705 | ||
5ffb9d1d | 706 | if (parent && !parent->vdev_parent && alloctype != VDEV_ALLOC_ATTACH) { |
428870ff BB |
707 | ASSERT(alloctype == VDEV_ALLOC_LOAD || |
708 | alloctype == VDEV_ALLOC_ADD || | |
709 | alloctype == VDEV_ALLOC_SPLIT || | |
710 | alloctype == VDEV_ALLOC_ROOTPOOL); | |
711 | vd->vdev_mg = metaslab_group_create(islog ? | |
712 | spa_log_class(spa) : spa_normal_class(spa), vd); | |
34dc7c2f BB |
713 | } |
714 | ||
e0ab3ab5 JS |
715 | if (vd->vdev_ops->vdev_op_leaf && |
716 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { | |
717 | (void) nvlist_lookup_uint64(nv, | |
718 | ZPOOL_CONFIG_VDEV_LEAF_ZAP, &vd->vdev_leaf_zap); | |
719 | } else { | |
720 | ASSERT0(vd->vdev_leaf_zap); | |
721 | } | |
722 | ||
34dc7c2f BB |
723 | /* |
724 | * If we're a leaf vdev, try to load the DTL object and other state. | |
725 | */ | |
e0ab3ab5 | 726 | |
b128c09f | 727 | if (vd->vdev_ops->vdev_op_leaf && |
9babb374 BB |
728 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE || |
729 | alloctype == VDEV_ALLOC_ROOTPOOL)) { | |
b128c09f BB |
730 | if (alloctype == VDEV_ALLOC_LOAD) { |
731 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL, | |
93cf2076 | 732 | &vd->vdev_dtl_object); |
b128c09f BB |
733 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE, |
734 | &vd->vdev_unspare); | |
735 | } | |
9babb374 BB |
736 | |
737 | if (alloctype == VDEV_ALLOC_ROOTPOOL) { | |
738 | uint64_t spare = 0; | |
739 | ||
740 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, | |
741 | &spare) == 0 && spare) | |
742 | spa_spare_add(vd); | |
743 | } | |
744 | ||
34dc7c2f BB |
745 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, |
746 | &vd->vdev_offline); | |
b128c09f | 747 | |
5d1f7fb6 GW |
748 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG, |
749 | &vd->vdev_resilver_txg); | |
572e2857 | 750 | |
34dc7c2f | 751 | /* |
4a283c7f TH |
752 | * In general, when importing a pool we want to ignore the |
753 | * persistent fault state, as the diagnosis made on another | |
754 | * system may not be valid in the current context. The only | |
755 | * exception is if we forced a vdev to a persistently faulted | |
756 | * state with 'zpool offline -f'. The persistent fault will | |
757 | * remain across imports until cleared. | |
758 | * | |
759 | * Local vdevs will remain in the faulted state. | |
34dc7c2f | 760 | */ |
4a283c7f TH |
761 | if (spa_load_state(spa) == SPA_LOAD_OPEN || |
762 | spa_load_state(spa) == SPA_LOAD_IMPORT) { | |
34dc7c2f BB |
763 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, |
764 | &vd->vdev_faulted); | |
765 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED, | |
766 | &vd->vdev_degraded); | |
767 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, | |
768 | &vd->vdev_removed); | |
428870ff BB |
769 | |
770 | if (vd->vdev_faulted || vd->vdev_degraded) { | |
771 | char *aux; | |
772 | ||
773 | vd->vdev_label_aux = | |
774 | VDEV_AUX_ERR_EXCEEDED; | |
775 | if (nvlist_lookup_string(nv, | |
776 | ZPOOL_CONFIG_AUX_STATE, &aux) == 0 && | |
777 | strcmp(aux, "external") == 0) | |
778 | vd->vdev_label_aux = VDEV_AUX_EXTERNAL; | |
a0ad7ca5 TC |
779 | else |
780 | vd->vdev_faulted = 0ULL; | |
428870ff | 781 | } |
34dc7c2f BB |
782 | } |
783 | } | |
784 | ||
785 | /* | |
786 | * Add ourselves to the parent's list of children. | |
787 | */ | |
788 | vdev_add_child(parent, vd); | |
789 | ||
790 | *vdp = vd; | |
791 | ||
792 | return (0); | |
793 | } | |
794 | ||
795 | void | |
796 | vdev_free(vdev_t *vd) | |
797 | { | |
34dc7c2f BB |
798 | spa_t *spa = vd->vdev_spa; |
799 | ||
d4a72f23 TC |
800 | /* |
801 | * Scan queues are normally destroyed at the end of a scan. If the | |
802 | * queue exists here, that implies the vdev is being removed while | |
803 | * the scan is still running. | |
804 | */ | |
805 | if (vd->vdev_scan_io_queue != NULL) { | |
806 | mutex_enter(&vd->vdev_scan_io_queue_lock); | |
807 | dsl_scan_io_queue_destroy(vd->vdev_scan_io_queue); | |
808 | vd->vdev_scan_io_queue = NULL; | |
809 | mutex_exit(&vd->vdev_scan_io_queue_lock); | |
810 | } | |
811 | ||
34dc7c2f BB |
812 | /* |
813 | * vdev_free() implies closing the vdev first. This is simpler than | |
814 | * trying to ensure complicated semantics for all callers. | |
815 | */ | |
816 | vdev_close(vd); | |
817 | ||
b128c09f | 818 | ASSERT(!list_link_active(&vd->vdev_config_dirty_node)); |
428870ff | 819 | ASSERT(!list_link_active(&vd->vdev_state_dirty_node)); |
34dc7c2f BB |
820 | |
821 | /* | |
822 | * Free all children. | |
823 | */ | |
1c27024e | 824 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
825 | vdev_free(vd->vdev_child[c]); |
826 | ||
827 | ASSERT(vd->vdev_child == NULL); | |
828 | ASSERT(vd->vdev_guid_sum == vd->vdev_guid); | |
829 | ||
830 | /* | |
831 | * Discard allocation state. | |
832 | */ | |
428870ff | 833 | if (vd->vdev_mg != NULL) { |
34dc7c2f | 834 | vdev_metaslab_fini(vd); |
428870ff BB |
835 | metaslab_group_destroy(vd->vdev_mg); |
836 | } | |
34dc7c2f | 837 | |
c99c9001 MS |
838 | ASSERT0(vd->vdev_stat.vs_space); |
839 | ASSERT0(vd->vdev_stat.vs_dspace); | |
840 | ASSERT0(vd->vdev_stat.vs_alloc); | |
34dc7c2f BB |
841 | |
842 | /* | |
843 | * Remove this vdev from its parent's child list. | |
844 | */ | |
845 | vdev_remove_child(vd->vdev_parent, vd); | |
846 | ||
847 | ASSERT(vd->vdev_parent == NULL); | |
848 | ||
849 | /* | |
850 | * Clean up vdev structure. | |
851 | */ | |
852 | vdev_queue_fini(vd); | |
853 | vdev_cache_fini(vd); | |
854 | ||
855 | if (vd->vdev_path) | |
856 | spa_strfree(vd->vdev_path); | |
857 | if (vd->vdev_devid) | |
858 | spa_strfree(vd->vdev_devid); | |
859 | if (vd->vdev_physpath) | |
860 | spa_strfree(vd->vdev_physpath); | |
1bbd8770 TH |
861 | |
862 | if (vd->vdev_enc_sysfs_path) | |
863 | spa_strfree(vd->vdev_enc_sysfs_path); | |
864 | ||
9babb374 BB |
865 | if (vd->vdev_fru) |
866 | spa_strfree(vd->vdev_fru); | |
34dc7c2f BB |
867 | |
868 | if (vd->vdev_isspare) | |
869 | spa_spare_remove(vd); | |
870 | if (vd->vdev_isl2cache) | |
871 | spa_l2cache_remove(vd); | |
872 | ||
873 | txg_list_destroy(&vd->vdev_ms_list); | |
874 | txg_list_destroy(&vd->vdev_dtl_list); | |
fb5f0bc8 | 875 | |
34dc7c2f | 876 | mutex_enter(&vd->vdev_dtl_lock); |
93cf2076 | 877 | space_map_close(vd->vdev_dtl_sm); |
1c27024e | 878 | for (int t = 0; t < DTL_TYPES; t++) { |
93cf2076 GW |
879 | range_tree_vacate(vd->vdev_dtl[t], NULL, NULL); |
880 | range_tree_destroy(vd->vdev_dtl[t]); | |
fb5f0bc8 | 881 | } |
34dc7c2f | 882 | mutex_exit(&vd->vdev_dtl_lock); |
fb5f0bc8 | 883 | |
a1d477c2 MA |
884 | EQUIV(vd->vdev_indirect_births != NULL, |
885 | vd->vdev_indirect_mapping != NULL); | |
886 | if (vd->vdev_indirect_births != NULL) { | |
887 | vdev_indirect_mapping_close(vd->vdev_indirect_mapping); | |
888 | vdev_indirect_births_close(vd->vdev_indirect_births); | |
889 | } | |
890 | ||
891 | if (vd->vdev_obsolete_sm != NULL) { | |
892 | ASSERT(vd->vdev_removing || | |
893 | vd->vdev_ops == &vdev_indirect_ops); | |
894 | space_map_close(vd->vdev_obsolete_sm); | |
895 | vd->vdev_obsolete_sm = NULL; | |
896 | } | |
897 | range_tree_destroy(vd->vdev_obsolete_segments); | |
898 | rw_destroy(&vd->vdev_indirect_rwlock); | |
899 | mutex_destroy(&vd->vdev_obsolete_lock); | |
900 | ||
3dfb57a3 | 901 | mutex_destroy(&vd->vdev_queue_lock); |
34dc7c2f BB |
902 | mutex_destroy(&vd->vdev_dtl_lock); |
903 | mutex_destroy(&vd->vdev_stat_lock); | |
b128c09f | 904 | mutex_destroy(&vd->vdev_probe_lock); |
d4a72f23 | 905 | mutex_destroy(&vd->vdev_scan_io_queue_lock); |
34dc7c2f | 906 | |
c17486b2 GN |
907 | zfs_ratelimit_fini(&vd->vdev_delay_rl); |
908 | zfs_ratelimit_fini(&vd->vdev_checksum_rl); | |
909 | ||
34dc7c2f BB |
910 | if (vd == spa->spa_root_vdev) |
911 | spa->spa_root_vdev = NULL; | |
912 | ||
913 | kmem_free(vd, sizeof (vdev_t)); | |
914 | } | |
915 | ||
916 | /* | |
917 | * Transfer top-level vdev state from svd to tvd. | |
918 | */ | |
919 | static void | |
920 | vdev_top_transfer(vdev_t *svd, vdev_t *tvd) | |
921 | { | |
922 | spa_t *spa = svd->vdev_spa; | |
923 | metaslab_t *msp; | |
924 | vdev_t *vd; | |
925 | int t; | |
926 | ||
927 | ASSERT(tvd == tvd->vdev_top); | |
928 | ||
77943bc1 | 929 | tvd->vdev_pending_fastwrite = svd->vdev_pending_fastwrite; |
34dc7c2f BB |
930 | tvd->vdev_ms_array = svd->vdev_ms_array; |
931 | tvd->vdev_ms_shift = svd->vdev_ms_shift; | |
932 | tvd->vdev_ms_count = svd->vdev_ms_count; | |
e0ab3ab5 | 933 | tvd->vdev_top_zap = svd->vdev_top_zap; |
34dc7c2f BB |
934 | |
935 | svd->vdev_ms_array = 0; | |
936 | svd->vdev_ms_shift = 0; | |
937 | svd->vdev_ms_count = 0; | |
e0ab3ab5 | 938 | svd->vdev_top_zap = 0; |
34dc7c2f | 939 | |
5ffb9d1d GW |
940 | if (tvd->vdev_mg) |
941 | ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg); | |
34dc7c2f BB |
942 | tvd->vdev_mg = svd->vdev_mg; |
943 | tvd->vdev_ms = svd->vdev_ms; | |
944 | ||
945 | svd->vdev_mg = NULL; | |
946 | svd->vdev_ms = NULL; | |
947 | ||
948 | if (tvd->vdev_mg != NULL) | |
949 | tvd->vdev_mg->mg_vd = tvd; | |
950 | ||
d2734cce SD |
951 | tvd->vdev_checkpoint_sm = svd->vdev_checkpoint_sm; |
952 | svd->vdev_checkpoint_sm = NULL; | |
953 | ||
34dc7c2f BB |
954 | tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc; |
955 | tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space; | |
956 | tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace; | |
957 | ||
958 | svd->vdev_stat.vs_alloc = 0; | |
959 | svd->vdev_stat.vs_space = 0; | |
960 | svd->vdev_stat.vs_dspace = 0; | |
961 | ||
9e052db4 MA |
962 | /* |
963 | * State which may be set on a top-level vdev that's in the | |
964 | * process of being removed. | |
965 | */ | |
966 | ASSERT0(tvd->vdev_indirect_config.vic_births_object); | |
967 | ASSERT0(tvd->vdev_indirect_config.vic_mapping_object); | |
968 | ASSERT3U(tvd->vdev_indirect_config.vic_prev_indirect_vdev, ==, -1ULL); | |
969 | ASSERT3P(tvd->vdev_indirect_mapping, ==, NULL); | |
970 | ASSERT3P(tvd->vdev_indirect_births, ==, NULL); | |
971 | ASSERT3P(tvd->vdev_obsolete_sm, ==, NULL); | |
972 | ASSERT0(tvd->vdev_removing); | |
973 | tvd->vdev_removing = svd->vdev_removing; | |
974 | tvd->vdev_indirect_config = svd->vdev_indirect_config; | |
975 | tvd->vdev_indirect_mapping = svd->vdev_indirect_mapping; | |
976 | tvd->vdev_indirect_births = svd->vdev_indirect_births; | |
977 | range_tree_swap(&svd->vdev_obsolete_segments, | |
978 | &tvd->vdev_obsolete_segments); | |
979 | tvd->vdev_obsolete_sm = svd->vdev_obsolete_sm; | |
980 | svd->vdev_indirect_config.vic_mapping_object = 0; | |
981 | svd->vdev_indirect_config.vic_births_object = 0; | |
982 | svd->vdev_indirect_config.vic_prev_indirect_vdev = -1ULL; | |
983 | svd->vdev_indirect_mapping = NULL; | |
984 | svd->vdev_indirect_births = NULL; | |
985 | svd->vdev_obsolete_sm = NULL; | |
986 | svd->vdev_removing = 0; | |
987 | ||
34dc7c2f BB |
988 | for (t = 0; t < TXG_SIZE; t++) { |
989 | while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL) | |
990 | (void) txg_list_add(&tvd->vdev_ms_list, msp, t); | |
991 | while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL) | |
992 | (void) txg_list_add(&tvd->vdev_dtl_list, vd, t); | |
993 | if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t)) | |
994 | (void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t); | |
995 | } | |
996 | ||
b128c09f | 997 | if (list_link_active(&svd->vdev_config_dirty_node)) { |
34dc7c2f BB |
998 | vdev_config_clean(svd); |
999 | vdev_config_dirty(tvd); | |
1000 | } | |
1001 | ||
b128c09f BB |
1002 | if (list_link_active(&svd->vdev_state_dirty_node)) { |
1003 | vdev_state_clean(svd); | |
1004 | vdev_state_dirty(tvd); | |
1005 | } | |
1006 | ||
34dc7c2f BB |
1007 | tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio; |
1008 | svd->vdev_deflate_ratio = 0; | |
1009 | ||
1010 | tvd->vdev_islog = svd->vdev_islog; | |
1011 | svd->vdev_islog = 0; | |
d4a72f23 TC |
1012 | |
1013 | dsl_scan_io_queue_vdev_xfer(svd, tvd); | |
34dc7c2f BB |
1014 | } |
1015 | ||
1016 | static void | |
1017 | vdev_top_update(vdev_t *tvd, vdev_t *vd) | |
1018 | { | |
34dc7c2f BB |
1019 | if (vd == NULL) |
1020 | return; | |
1021 | ||
1022 | vd->vdev_top = tvd; | |
1023 | ||
1c27024e | 1024 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
1025 | vdev_top_update(tvd, vd->vdev_child[c]); |
1026 | } | |
1027 | ||
1028 | /* | |
1029 | * Add a mirror/replacing vdev above an existing vdev. | |
1030 | */ | |
1031 | vdev_t * | |
1032 | vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops) | |
1033 | { | |
1034 | spa_t *spa = cvd->vdev_spa; | |
1035 | vdev_t *pvd = cvd->vdev_parent; | |
1036 | vdev_t *mvd; | |
1037 | ||
b128c09f | 1038 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
1039 | |
1040 | mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops); | |
1041 | ||
1042 | mvd->vdev_asize = cvd->vdev_asize; | |
9babb374 | 1043 | mvd->vdev_min_asize = cvd->vdev_min_asize; |
1bd201e7 | 1044 | mvd->vdev_max_asize = cvd->vdev_max_asize; |
a1d477c2 | 1045 | mvd->vdev_psize = cvd->vdev_psize; |
34dc7c2f BB |
1046 | mvd->vdev_ashift = cvd->vdev_ashift; |
1047 | mvd->vdev_state = cvd->vdev_state; | |
428870ff | 1048 | mvd->vdev_crtxg = cvd->vdev_crtxg; |
34dc7c2f BB |
1049 | |
1050 | vdev_remove_child(pvd, cvd); | |
1051 | vdev_add_child(pvd, mvd); | |
1052 | cvd->vdev_id = mvd->vdev_children; | |
1053 | vdev_add_child(mvd, cvd); | |
1054 | vdev_top_update(cvd->vdev_top, cvd->vdev_top); | |
1055 | ||
1056 | if (mvd == mvd->vdev_top) | |
1057 | vdev_top_transfer(cvd, mvd); | |
1058 | ||
1059 | return (mvd); | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Remove a 1-way mirror/replacing vdev from the tree. | |
1064 | */ | |
1065 | void | |
1066 | vdev_remove_parent(vdev_t *cvd) | |
1067 | { | |
1068 | vdev_t *mvd = cvd->vdev_parent; | |
1069 | vdev_t *pvd = mvd->vdev_parent; | |
1070 | ||
b128c09f | 1071 | ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
1072 | |
1073 | ASSERT(mvd->vdev_children == 1); | |
1074 | ASSERT(mvd->vdev_ops == &vdev_mirror_ops || | |
1075 | mvd->vdev_ops == &vdev_replacing_ops || | |
1076 | mvd->vdev_ops == &vdev_spare_ops); | |
1077 | cvd->vdev_ashift = mvd->vdev_ashift; | |
1078 | ||
1079 | vdev_remove_child(mvd, cvd); | |
1080 | vdev_remove_child(pvd, mvd); | |
fb5f0bc8 | 1081 | |
34dc7c2f | 1082 | /* |
b128c09f BB |
1083 | * If cvd will replace mvd as a top-level vdev, preserve mvd's guid. |
1084 | * Otherwise, we could have detached an offline device, and when we | |
1085 | * go to import the pool we'll think we have two top-level vdevs, | |
1086 | * instead of a different version of the same top-level vdev. | |
34dc7c2f | 1087 | */ |
fb5f0bc8 BB |
1088 | if (mvd->vdev_top == mvd) { |
1089 | uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid; | |
428870ff | 1090 | cvd->vdev_orig_guid = cvd->vdev_guid; |
fb5f0bc8 BB |
1091 | cvd->vdev_guid += guid_delta; |
1092 | cvd->vdev_guid_sum += guid_delta; | |
61e99a73 AB |
1093 | |
1094 | /* | |
1095 | * If pool not set for autoexpand, we need to also preserve | |
1096 | * mvd's asize to prevent automatic expansion of cvd. | |
1097 | * Otherwise if we are adjusting the mirror by attaching and | |
1098 | * detaching children of non-uniform sizes, the mirror could | |
1099 | * autoexpand, unexpectedly requiring larger devices to | |
1100 | * re-establish the mirror. | |
1101 | */ | |
1102 | if (!cvd->vdev_spa->spa_autoexpand) | |
1103 | cvd->vdev_asize = mvd->vdev_asize; | |
fb5f0bc8 | 1104 | } |
b128c09f BB |
1105 | cvd->vdev_id = mvd->vdev_id; |
1106 | vdev_add_child(pvd, cvd); | |
34dc7c2f BB |
1107 | vdev_top_update(cvd->vdev_top, cvd->vdev_top); |
1108 | ||
1109 | if (cvd == cvd->vdev_top) | |
1110 | vdev_top_transfer(mvd, cvd); | |
1111 | ||
1112 | ASSERT(mvd->vdev_children == 0); | |
1113 | vdev_free(mvd); | |
1114 | } | |
1115 | ||
1116 | int | |
1117 | vdev_metaslab_init(vdev_t *vd, uint64_t txg) | |
1118 | { | |
1119 | spa_t *spa = vd->vdev_spa; | |
1120 | objset_t *mos = spa->spa_meta_objset; | |
34dc7c2f BB |
1121 | uint64_t m; |
1122 | uint64_t oldc = vd->vdev_ms_count; | |
1123 | uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift; | |
1124 | metaslab_t **mspp; | |
1125 | int error; | |
1126 | ||
428870ff BB |
1127 | ASSERT(txg == 0 || spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
1128 | ||
1129 | /* | |
1130 | * This vdev is not being allocated from yet or is a hole. | |
1131 | */ | |
1132 | if (vd->vdev_ms_shift == 0) | |
34dc7c2f BB |
1133 | return (0); |
1134 | ||
428870ff BB |
1135 | ASSERT(!vd->vdev_ishole); |
1136 | ||
34dc7c2f BB |
1137 | ASSERT(oldc <= newc); |
1138 | ||
bffb68a2 | 1139 | mspp = vmem_zalloc(newc * sizeof (*mspp), KM_SLEEP); |
34dc7c2f BB |
1140 | |
1141 | if (oldc != 0) { | |
1142 | bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp)); | |
bffb68a2 | 1143 | vmem_free(vd->vdev_ms, oldc * sizeof (*mspp)); |
34dc7c2f BB |
1144 | } |
1145 | ||
1146 | vd->vdev_ms = mspp; | |
1147 | vd->vdev_ms_count = newc; | |
1148 | ||
1149 | for (m = oldc; m < newc; m++) { | |
93cf2076 GW |
1150 | uint64_t object = 0; |
1151 | ||
a1d477c2 MA |
1152 | /* |
1153 | * vdev_ms_array may be 0 if we are creating the "fake" | |
1154 | * metaslabs for an indirect vdev for zdb's leak detection. | |
1155 | * See zdb_leak_init(). | |
1156 | */ | |
1157 | if (txg == 0 && vd->vdev_ms_array != 0) { | |
34dc7c2f | 1158 | error = dmu_read(mos, vd->vdev_ms_array, |
9babb374 BB |
1159 | m * sizeof (uint64_t), sizeof (uint64_t), &object, |
1160 | DMU_READ_PREFETCH); | |
4a0ee12a PZ |
1161 | if (error != 0) { |
1162 | vdev_dbgmsg(vd, "unable to read the metaslab " | |
1163 | "array [error=%d]", error); | |
34dc7c2f | 1164 | return (error); |
4a0ee12a | 1165 | } |
34dc7c2f | 1166 | } |
fb42a493 PS |
1167 | |
1168 | error = metaslab_init(vd->vdev_mg, m, object, txg, | |
1169 | &(vd->vdev_ms[m])); | |
4a0ee12a PZ |
1170 | if (error != 0) { |
1171 | vdev_dbgmsg(vd, "metaslab_init failed [error=%d]", | |
1172 | error); | |
fb42a493 | 1173 | return (error); |
4a0ee12a | 1174 | } |
34dc7c2f BB |
1175 | } |
1176 | ||
428870ff BB |
1177 | if (txg == 0) |
1178 | spa_config_enter(spa, SCL_ALLOC, FTAG, RW_WRITER); | |
1179 | ||
1180 | /* | |
1181 | * If the vdev is being removed we don't activate | |
1182 | * the metaslabs since we want to ensure that no new | |
1183 | * allocations are performed on this device. | |
1184 | */ | |
1185 | if (oldc == 0 && !vd->vdev_removing) | |
1186 | metaslab_group_activate(vd->vdev_mg); | |
1187 | ||
1188 | if (txg == 0) | |
1189 | spa_config_exit(spa, SCL_ALLOC, FTAG); | |
1190 | ||
34dc7c2f BB |
1191 | return (0); |
1192 | } | |
1193 | ||
1194 | void | |
1195 | vdev_metaslab_fini(vdev_t *vd) | |
1196 | { | |
d2734cce SD |
1197 | if (vd->vdev_checkpoint_sm != NULL) { |
1198 | ASSERT(spa_feature_is_active(vd->vdev_spa, | |
1199 | SPA_FEATURE_POOL_CHECKPOINT)); | |
1200 | space_map_close(vd->vdev_checkpoint_sm); | |
1201 | /* | |
1202 | * Even though we close the space map, we need to set its | |
1203 | * pointer to NULL. The reason is that vdev_metaslab_fini() | |
1204 | * may be called multiple times for certain operations | |
1205 | * (i.e. when destroying a pool) so we need to ensure that | |
1206 | * this clause never executes twice. This logic is similar | |
1207 | * to the one used for the vdev_ms clause below. | |
1208 | */ | |
1209 | vd->vdev_checkpoint_sm = NULL; | |
1210 | } | |
1211 | ||
34dc7c2f | 1212 | if (vd->vdev_ms != NULL) { |
a1d477c2 MA |
1213 | uint64_t count = vd->vdev_ms_count; |
1214 | ||
428870ff | 1215 | metaslab_group_passivate(vd->vdev_mg); |
a1d477c2 | 1216 | for (uint64_t m = 0; m < count; m++) { |
93cf2076 GW |
1217 | metaslab_t *msp = vd->vdev_ms[m]; |
1218 | ||
1219 | if (msp != NULL) | |
1220 | metaslab_fini(msp); | |
1221 | } | |
bffb68a2 | 1222 | vmem_free(vd->vdev_ms, count * sizeof (metaslab_t *)); |
34dc7c2f | 1223 | vd->vdev_ms = NULL; |
920dd524 | 1224 | |
a1d477c2 MA |
1225 | vd->vdev_ms_count = 0; |
1226 | } | |
1227 | ASSERT0(vd->vdev_ms_count); | |
920dd524 | 1228 | ASSERT3U(vd->vdev_pending_fastwrite, ==, 0); |
34dc7c2f BB |
1229 | } |
1230 | ||
b128c09f BB |
1231 | typedef struct vdev_probe_stats { |
1232 | boolean_t vps_readable; | |
1233 | boolean_t vps_writeable; | |
1234 | int vps_flags; | |
b128c09f BB |
1235 | } vdev_probe_stats_t; |
1236 | ||
1237 | static void | |
1238 | vdev_probe_done(zio_t *zio) | |
34dc7c2f | 1239 | { |
fb5f0bc8 | 1240 | spa_t *spa = zio->io_spa; |
d164b209 | 1241 | vdev_t *vd = zio->io_vd; |
b128c09f | 1242 | vdev_probe_stats_t *vps = zio->io_private; |
d164b209 BB |
1243 | |
1244 | ASSERT(vd->vdev_probe_zio != NULL); | |
b128c09f BB |
1245 | |
1246 | if (zio->io_type == ZIO_TYPE_READ) { | |
b128c09f BB |
1247 | if (zio->io_error == 0) |
1248 | vps->vps_readable = 1; | |
fb5f0bc8 | 1249 | if (zio->io_error == 0 && spa_writeable(spa)) { |
d164b209 | 1250 | zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd, |
a6255b7f | 1251 | zio->io_offset, zio->io_size, zio->io_abd, |
b128c09f BB |
1252 | ZIO_CHECKSUM_OFF, vdev_probe_done, vps, |
1253 | ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE)); | |
1254 | } else { | |
a6255b7f | 1255 | abd_free(zio->io_abd); |
b128c09f BB |
1256 | } |
1257 | } else if (zio->io_type == ZIO_TYPE_WRITE) { | |
b128c09f BB |
1258 | if (zio->io_error == 0) |
1259 | vps->vps_writeable = 1; | |
a6255b7f | 1260 | abd_free(zio->io_abd); |
b128c09f | 1261 | } else if (zio->io_type == ZIO_TYPE_NULL) { |
d164b209 | 1262 | zio_t *pio; |
3dfb57a3 | 1263 | zio_link_t *zl; |
b128c09f BB |
1264 | |
1265 | vd->vdev_cant_read |= !vps->vps_readable; | |
1266 | vd->vdev_cant_write |= !vps->vps_writeable; | |
1267 | ||
1268 | if (vdev_readable(vd) && | |
fb5f0bc8 | 1269 | (vdev_writeable(vd) || !spa_writeable(spa))) { |
b128c09f BB |
1270 | zio->io_error = 0; |
1271 | } else { | |
1272 | ASSERT(zio->io_error != 0); | |
4a0ee12a | 1273 | vdev_dbgmsg(vd, "failed probe"); |
b128c09f | 1274 | zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE, |
b5256303 | 1275 | spa, vd, NULL, NULL, 0, 0); |
2e528b49 | 1276 | zio->io_error = SET_ERROR(ENXIO); |
b128c09f | 1277 | } |
d164b209 BB |
1278 | |
1279 | mutex_enter(&vd->vdev_probe_lock); | |
1280 | ASSERT(vd->vdev_probe_zio == zio); | |
1281 | vd->vdev_probe_zio = NULL; | |
1282 | mutex_exit(&vd->vdev_probe_lock); | |
1283 | ||
3dfb57a3 DB |
1284 | zl = NULL; |
1285 | while ((pio = zio_walk_parents(zio, &zl)) != NULL) | |
d164b209 | 1286 | if (!vdev_accessible(vd, pio)) |
2e528b49 | 1287 | pio->io_error = SET_ERROR(ENXIO); |
d164b209 | 1288 | |
b128c09f BB |
1289 | kmem_free(vps, sizeof (*vps)); |
1290 | } | |
1291 | } | |
34dc7c2f | 1292 | |
b128c09f | 1293 | /* |
d3cc8b15 WA |
1294 | * Determine whether this device is accessible. |
1295 | * | |
1296 | * Read and write to several known locations: the pad regions of each | |
1297 | * vdev label but the first, which we leave alone in case it contains | |
1298 | * a VTOC. | |
b128c09f BB |
1299 | */ |
1300 | zio_t * | |
d164b209 | 1301 | vdev_probe(vdev_t *vd, zio_t *zio) |
b128c09f BB |
1302 | { |
1303 | spa_t *spa = vd->vdev_spa; | |
d164b209 BB |
1304 | vdev_probe_stats_t *vps = NULL; |
1305 | zio_t *pio; | |
1306 | ||
1307 | ASSERT(vd->vdev_ops->vdev_op_leaf); | |
34dc7c2f | 1308 | |
d164b209 BB |
1309 | /* |
1310 | * Don't probe the probe. | |
1311 | */ | |
1312 | if (zio && (zio->io_flags & ZIO_FLAG_PROBE)) | |
1313 | return (NULL); | |
b128c09f | 1314 | |
d164b209 BB |
1315 | /* |
1316 | * To prevent 'probe storms' when a device fails, we create | |
1317 | * just one probe i/o at a time. All zios that want to probe | |
1318 | * this vdev will become parents of the probe io. | |
1319 | */ | |
1320 | mutex_enter(&vd->vdev_probe_lock); | |
b128c09f | 1321 | |
d164b209 | 1322 | if ((pio = vd->vdev_probe_zio) == NULL) { |
79c76d5b | 1323 | vps = kmem_zalloc(sizeof (*vps), KM_SLEEP); |
d164b209 BB |
1324 | |
1325 | vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE | | |
1326 | ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE | | |
9babb374 | 1327 | ZIO_FLAG_TRYHARD; |
d164b209 BB |
1328 | |
1329 | if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) { | |
1330 | /* | |
1331 | * vdev_cant_read and vdev_cant_write can only | |
1332 | * transition from TRUE to FALSE when we have the | |
1333 | * SCL_ZIO lock as writer; otherwise they can only | |
1334 | * transition from FALSE to TRUE. This ensures that | |
1335 | * any zio looking at these values can assume that | |
1336 | * failures persist for the life of the I/O. That's | |
1337 | * important because when a device has intermittent | |
1338 | * connectivity problems, we want to ensure that | |
1339 | * they're ascribed to the device (ENXIO) and not | |
1340 | * the zio (EIO). | |
1341 | * | |
1342 | * Since we hold SCL_ZIO as writer here, clear both | |
1343 | * values so the probe can reevaluate from first | |
1344 | * principles. | |
1345 | */ | |
1346 | vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER; | |
1347 | vd->vdev_cant_read = B_FALSE; | |
1348 | vd->vdev_cant_write = B_FALSE; | |
1349 | } | |
1350 | ||
1351 | vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd, | |
1352 | vdev_probe_done, vps, | |
1353 | vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE); | |
1354 | ||
428870ff BB |
1355 | /* |
1356 | * We can't change the vdev state in this context, so we | |
1357 | * kick off an async task to do it on our behalf. | |
1358 | */ | |
d164b209 BB |
1359 | if (zio != NULL) { |
1360 | vd->vdev_probe_wanted = B_TRUE; | |
1361 | spa_async_request(spa, SPA_ASYNC_PROBE); | |
1362 | } | |
b128c09f BB |
1363 | } |
1364 | ||
d164b209 BB |
1365 | if (zio != NULL) |
1366 | zio_add_child(zio, pio); | |
b128c09f | 1367 | |
d164b209 | 1368 | mutex_exit(&vd->vdev_probe_lock); |
b128c09f | 1369 | |
d164b209 BB |
1370 | if (vps == NULL) { |
1371 | ASSERT(zio != NULL); | |
1372 | return (NULL); | |
1373 | } | |
b128c09f | 1374 | |
1c27024e | 1375 | for (int l = 1; l < VDEV_LABELS; l++) { |
d164b209 | 1376 | zio_nowait(zio_read_phys(pio, vd, |
b128c09f | 1377 | vdev_label_offset(vd->vdev_psize, l, |
a6255b7f DQ |
1378 | offsetof(vdev_label_t, vl_pad2)), VDEV_PAD_SIZE, |
1379 | abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE), | |
b128c09f BB |
1380 | ZIO_CHECKSUM_OFF, vdev_probe_done, vps, |
1381 | ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE)); | |
1382 | } | |
1383 | ||
d164b209 BB |
1384 | if (zio == NULL) |
1385 | return (pio); | |
1386 | ||
1387 | zio_nowait(pio); | |
1388 | return (NULL); | |
34dc7c2f BB |
1389 | } |
1390 | ||
45d1cae3 BB |
1391 | static void |
1392 | vdev_open_child(void *arg) | |
1393 | { | |
1394 | vdev_t *vd = arg; | |
1395 | ||
1396 | vd->vdev_open_thread = curthread; | |
1397 | vd->vdev_open_error = vdev_open(vd); | |
1398 | vd->vdev_open_thread = NULL; | |
1399 | } | |
1400 | ||
6c285672 | 1401 | static boolean_t |
428870ff BB |
1402 | vdev_uses_zvols(vdev_t *vd) |
1403 | { | |
6c285672 JL |
1404 | #ifdef _KERNEL |
1405 | if (zvol_is_zvol(vd->vdev_path)) | |
428870ff | 1406 | return (B_TRUE); |
6c285672 JL |
1407 | #endif |
1408 | ||
1c27024e | 1409 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
1410 | if (vdev_uses_zvols(vd->vdev_child[c])) |
1411 | return (B_TRUE); | |
6c285672 | 1412 | |
428870ff BB |
1413 | return (B_FALSE); |
1414 | } | |
1415 | ||
45d1cae3 BB |
1416 | void |
1417 | vdev_open_children(vdev_t *vd) | |
1418 | { | |
1419 | taskq_t *tq; | |
1420 | int children = vd->vdev_children; | |
1421 | ||
428870ff BB |
1422 | /* |
1423 | * in order to handle pools on top of zvols, do the opens | |
1424 | * in a single thread so that the same thread holds the | |
1425 | * spa_namespace_lock | |
1426 | */ | |
1427 | if (vdev_uses_zvols(vd)) { | |
13d9a004 | 1428 | retry_sync: |
1c27024e | 1429 | for (int c = 0; c < children; c++) |
428870ff BB |
1430 | vd->vdev_child[c]->vdev_open_error = |
1431 | vdev_open(vd->vdev_child[c]); | |
4770aa06 HJ |
1432 | } else { |
1433 | tq = taskq_create("vdev_open", children, minclsyspri, | |
1434 | children, children, TASKQ_PREPOPULATE); | |
13d9a004 BB |
1435 | if (tq == NULL) |
1436 | goto retry_sync; | |
45d1cae3 | 1437 | |
1c27024e | 1438 | for (int c = 0; c < children; c++) |
4770aa06 | 1439 | VERIFY(taskq_dispatch(tq, vdev_open_child, |
48d3eb40 | 1440 | vd->vdev_child[c], TQ_SLEEP) != TASKQID_INVALID); |
45d1cae3 | 1441 | |
4770aa06 HJ |
1442 | taskq_destroy(tq); |
1443 | } | |
1444 | ||
1445 | vd->vdev_nonrot = B_TRUE; | |
fb40095f | 1446 | |
1c27024e | 1447 | for (int c = 0; c < children; c++) |
fb40095f | 1448 | vd->vdev_nonrot &= vd->vdev_child[c]->vdev_nonrot; |
45d1cae3 BB |
1449 | } |
1450 | ||
a1d477c2 MA |
1451 | /* |
1452 | * Compute the raidz-deflation ratio. Note, we hard-code | |
1453 | * in 128k (1 << 17) because it is the "typical" blocksize. | |
1454 | * Even though SPA_MAXBLOCKSIZE changed, this algorithm can not change, | |
1455 | * otherwise it would inconsistently account for existing bp's. | |
1456 | */ | |
1457 | static void | |
1458 | vdev_set_deflate_ratio(vdev_t *vd) | |
1459 | { | |
1460 | if (vd == vd->vdev_top && !vd->vdev_ishole && vd->vdev_ashift != 0) { | |
1461 | vd->vdev_deflate_ratio = (1 << 17) / | |
1462 | (vdev_psize_to_asize(vd, 1 << 17) >> SPA_MINBLOCKSHIFT); | |
1463 | } | |
1464 | } | |
1465 | ||
34dc7c2f BB |
1466 | /* |
1467 | * Prepare a virtual device for access. | |
1468 | */ | |
1469 | int | |
1470 | vdev_open(vdev_t *vd) | |
1471 | { | |
fb5f0bc8 | 1472 | spa_t *spa = vd->vdev_spa; |
34dc7c2f | 1473 | int error; |
34dc7c2f | 1474 | uint64_t osize = 0; |
1bd201e7 CS |
1475 | uint64_t max_osize = 0; |
1476 | uint64_t asize, max_asize, psize; | |
34dc7c2f BB |
1477 | uint64_t ashift = 0; |
1478 | ||
45d1cae3 BB |
1479 | ASSERT(vd->vdev_open_thread == curthread || |
1480 | spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
34dc7c2f BB |
1481 | ASSERT(vd->vdev_state == VDEV_STATE_CLOSED || |
1482 | vd->vdev_state == VDEV_STATE_CANT_OPEN || | |
1483 | vd->vdev_state == VDEV_STATE_OFFLINE); | |
1484 | ||
34dc7c2f | 1485 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; |
9babb374 BB |
1486 | vd->vdev_cant_read = B_FALSE; |
1487 | vd->vdev_cant_write = B_FALSE; | |
1488 | vd->vdev_min_asize = vdev_get_min_asize(vd); | |
34dc7c2f | 1489 | |
428870ff BB |
1490 | /* |
1491 | * If this vdev is not removed, check its fault status. If it's | |
1492 | * faulted, bail out of the open. | |
1493 | */ | |
34dc7c2f BB |
1494 | if (!vd->vdev_removed && vd->vdev_faulted) { |
1495 | ASSERT(vd->vdev_children == 0); | |
428870ff BB |
1496 | ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || |
1497 | vd->vdev_label_aux == VDEV_AUX_EXTERNAL); | |
34dc7c2f | 1498 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, |
428870ff | 1499 | vd->vdev_label_aux); |
2e528b49 | 1500 | return (SET_ERROR(ENXIO)); |
34dc7c2f BB |
1501 | } else if (vd->vdev_offline) { |
1502 | ASSERT(vd->vdev_children == 0); | |
1503 | vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE); | |
2e528b49 | 1504 | return (SET_ERROR(ENXIO)); |
34dc7c2f BB |
1505 | } |
1506 | ||
1bd201e7 | 1507 | error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize, &ashift); |
34dc7c2f | 1508 | |
428870ff BB |
1509 | /* |
1510 | * Reset the vdev_reopening flag so that we actually close | |
1511 | * the vdev on error. | |
1512 | */ | |
1513 | vd->vdev_reopening = B_FALSE; | |
34dc7c2f | 1514 | if (zio_injection_enabled && error == 0) |
9babb374 | 1515 | error = zio_handle_device_injection(vd, NULL, ENXIO); |
34dc7c2f BB |
1516 | |
1517 | if (error) { | |
1518 | if (vd->vdev_removed && | |
1519 | vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED) | |
1520 | vd->vdev_removed = B_FALSE; | |
1521 | ||
6cb8e530 PZ |
1522 | if (vd->vdev_stat.vs_aux == VDEV_AUX_CHILDREN_OFFLINE) { |
1523 | vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, | |
1524 | vd->vdev_stat.vs_aux); | |
1525 | } else { | |
1526 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1527 | vd->vdev_stat.vs_aux); | |
1528 | } | |
34dc7c2f BB |
1529 | return (error); |
1530 | } | |
1531 | ||
1532 | vd->vdev_removed = B_FALSE; | |
1533 | ||
428870ff BB |
1534 | /* |
1535 | * Recheck the faulted flag now that we have confirmed that | |
1536 | * the vdev is accessible. If we're faulted, bail. | |
1537 | */ | |
1538 | if (vd->vdev_faulted) { | |
1539 | ASSERT(vd->vdev_children == 0); | |
1540 | ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || | |
1541 | vd->vdev_label_aux == VDEV_AUX_EXTERNAL); | |
1542 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, | |
1543 | vd->vdev_label_aux); | |
2e528b49 | 1544 | return (SET_ERROR(ENXIO)); |
428870ff BB |
1545 | } |
1546 | ||
34dc7c2f BB |
1547 | if (vd->vdev_degraded) { |
1548 | ASSERT(vd->vdev_children == 0); | |
1549 | vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, | |
1550 | VDEV_AUX_ERR_EXCEEDED); | |
1551 | } else { | |
428870ff | 1552 | vdev_set_state(vd, B_TRUE, VDEV_STATE_HEALTHY, 0); |
34dc7c2f BB |
1553 | } |
1554 | ||
428870ff BB |
1555 | /* |
1556 | * For hole or missing vdevs we just return success. | |
1557 | */ | |
1558 | if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) | |
1559 | return (0); | |
1560 | ||
1c27024e | 1561 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
1562 | if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) { |
1563 | vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, | |
1564 | VDEV_AUX_NONE); | |
1565 | break; | |
1566 | } | |
9babb374 | 1567 | } |
34dc7c2f BB |
1568 | |
1569 | osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t)); | |
1bd201e7 | 1570 | max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t)); |
34dc7c2f BB |
1571 | |
1572 | if (vd->vdev_children == 0) { | |
1573 | if (osize < SPA_MINDEVSIZE) { | |
1574 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1575 | VDEV_AUX_TOO_SMALL); | |
2e528b49 | 1576 | return (SET_ERROR(EOVERFLOW)); |
34dc7c2f BB |
1577 | } |
1578 | psize = osize; | |
1579 | asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE); | |
1bd201e7 CS |
1580 | max_asize = max_osize - (VDEV_LABEL_START_SIZE + |
1581 | VDEV_LABEL_END_SIZE); | |
34dc7c2f BB |
1582 | } else { |
1583 | if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE - | |
1584 | (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) { | |
1585 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1586 | VDEV_AUX_TOO_SMALL); | |
2e528b49 | 1587 | return (SET_ERROR(EOVERFLOW)); |
34dc7c2f BB |
1588 | } |
1589 | psize = 0; | |
1590 | asize = osize; | |
1bd201e7 | 1591 | max_asize = max_osize; |
34dc7c2f BB |
1592 | } |
1593 | ||
9d3f7b87 OF |
1594 | /* |
1595 | * If the vdev was expanded, record this so that we can re-create the | |
1596 | * uberblock rings in labels {2,3}, during the next sync. | |
1597 | */ | |
1598 | if ((psize > vd->vdev_psize) && (vd->vdev_psize != 0)) | |
1599 | vd->vdev_copy_uberblocks = B_TRUE; | |
1600 | ||
34dc7c2f BB |
1601 | vd->vdev_psize = psize; |
1602 | ||
9babb374 | 1603 | /* |
2e215fec | 1604 | * Make sure the allocatable size hasn't shrunk too much. |
9babb374 BB |
1605 | */ |
1606 | if (asize < vd->vdev_min_asize) { | |
1607 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1608 | VDEV_AUX_BAD_LABEL); | |
2e528b49 | 1609 | return (SET_ERROR(EINVAL)); |
9babb374 BB |
1610 | } |
1611 | ||
34dc7c2f BB |
1612 | if (vd->vdev_asize == 0) { |
1613 | /* | |
1614 | * This is the first-ever open, so use the computed values. | |
b28e57cb | 1615 | * For compatibility, a different ashift can be requested. |
34dc7c2f BB |
1616 | */ |
1617 | vd->vdev_asize = asize; | |
1bd201e7 | 1618 | vd->vdev_max_asize = max_asize; |
ff61d1a4 | 1619 | if (vd->vdev_ashift == 0) { |
1620 | vd->vdev_ashift = ashift; /* use detected value */ | |
1621 | } | |
1622 | if (vd->vdev_ashift != 0 && (vd->vdev_ashift < ASHIFT_MIN || | |
1623 | vd->vdev_ashift > ASHIFT_MAX)) { | |
1624 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1625 | VDEV_AUX_BAD_ASHIFT); | |
1626 | return (SET_ERROR(EDOM)); | |
1627 | } | |
34dc7c2f BB |
1628 | } else { |
1629 | /* | |
32a9872b GW |
1630 | * Detect if the alignment requirement has increased. |
1631 | * We don't want to make the pool unavailable, just | |
1632 | * post an event instead. | |
34dc7c2f | 1633 | */ |
32a9872b GW |
1634 | if (ashift > vd->vdev_top->vdev_ashift && |
1635 | vd->vdev_ops->vdev_op_leaf) { | |
1636 | zfs_ereport_post(FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT, | |
b5256303 | 1637 | spa, vd, NULL, NULL, 0, 0); |
34dc7c2f | 1638 | } |
32a9872b | 1639 | |
1bd201e7 | 1640 | vd->vdev_max_asize = max_asize; |
9babb374 | 1641 | } |
34dc7c2f | 1642 | |
9babb374 | 1643 | /* |
2e215fec SH |
1644 | * If all children are healthy we update asize if either: |
1645 | * The asize has increased, due to a device expansion caused by dynamic | |
1646 | * LUN growth or vdev replacement, and automatic expansion is enabled; | |
1647 | * making the additional space available. | |
1648 | * | |
1649 | * The asize has decreased, due to a device shrink usually caused by a | |
1650 | * vdev replace with a smaller device. This ensures that calculations | |
1651 | * based of max_asize and asize e.g. esize are always valid. It's safe | |
1652 | * to do this as we've already validated that asize is greater than | |
1653 | * vdev_min_asize. | |
9babb374 | 1654 | */ |
2e215fec SH |
1655 | if (vd->vdev_state == VDEV_STATE_HEALTHY && |
1656 | ((asize > vd->vdev_asize && | |
1657 | (vd->vdev_expanding || spa->spa_autoexpand)) || | |
1658 | (asize < vd->vdev_asize))) | |
9babb374 | 1659 | vd->vdev_asize = asize; |
34dc7c2f | 1660 | |
9babb374 | 1661 | vdev_set_min_asize(vd); |
34dc7c2f BB |
1662 | |
1663 | /* | |
1664 | * Ensure we can issue some IO before declaring the | |
1665 | * vdev open for business. | |
1666 | */ | |
b128c09f BB |
1667 | if (vd->vdev_ops->vdev_op_leaf && |
1668 | (error = zio_wait(vdev_probe(vd, NULL))) != 0) { | |
428870ff BB |
1669 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, |
1670 | VDEV_AUX_ERR_EXCEEDED); | |
34dc7c2f BB |
1671 | return (error); |
1672 | } | |
1673 | ||
c3520e7f MA |
1674 | /* |
1675 | * Track the min and max ashift values for normal data devices. | |
1676 | */ | |
1677 | if (vd->vdev_top == vd && vd->vdev_ashift != 0 && | |
1678 | !vd->vdev_islog && vd->vdev_aux == NULL) { | |
1679 | if (vd->vdev_ashift > spa->spa_max_ashift) | |
1680 | spa->spa_max_ashift = vd->vdev_ashift; | |
1681 | if (vd->vdev_ashift < spa->spa_min_ashift) | |
1682 | spa->spa_min_ashift = vd->vdev_ashift; | |
1683 | } | |
1684 | ||
34dc7c2f | 1685 | /* |
b128c09f | 1686 | * If a leaf vdev has a DTL, and seems healthy, then kick off a |
fb5f0bc8 BB |
1687 | * resilver. But don't do this if we are doing a reopen for a scrub, |
1688 | * since this would just restart the scrub we are already doing. | |
34dc7c2f | 1689 | */ |
fb5f0bc8 BB |
1690 | if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen && |
1691 | vdev_resilver_needed(vd, NULL, NULL)) | |
1692 | spa_async_request(spa, SPA_ASYNC_RESILVER); | |
34dc7c2f BB |
1693 | |
1694 | return (0); | |
1695 | } | |
1696 | ||
1697 | /* | |
1698 | * Called once the vdevs are all opened, this routine validates the label | |
6cb8e530 | 1699 | * contents. This needs to be done before vdev_load() so that we don't |
34dc7c2f BB |
1700 | * inadvertently do repair I/Os to the wrong device. |
1701 | * | |
1702 | * This function will only return failure if one of the vdevs indicates that it | |
1703 | * has since been destroyed or exported. This is only possible if | |
1704 | * /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state | |
1705 | * will be updated but the function will return 0. | |
1706 | */ | |
1707 | int | |
6cb8e530 | 1708 | vdev_validate(vdev_t *vd) |
34dc7c2f BB |
1709 | { |
1710 | spa_t *spa = vd->vdev_spa; | |
34dc7c2f | 1711 | nvlist_t *label; |
6cb8e530 | 1712 | uint64_t guid = 0, aux_guid = 0, top_guid; |
34dc7c2f | 1713 | uint64_t state; |
6cb8e530 PZ |
1714 | nvlist_t *nvl; |
1715 | uint64_t txg; | |
34dc7c2f | 1716 | |
6cb8e530 PZ |
1717 | if (vdev_validate_skip) |
1718 | return (0); | |
1719 | ||
1720 | for (uint64_t c = 0; c < vd->vdev_children; c++) | |
1721 | if (vdev_validate(vd->vdev_child[c]) != 0) | |
2e528b49 | 1722 | return (SET_ERROR(EBADF)); |
34dc7c2f BB |
1723 | |
1724 | /* | |
1725 | * If the device has already failed, or was marked offline, don't do | |
1726 | * any further validation. Otherwise, label I/O will fail and we will | |
1727 | * overwrite the previous state. | |
1728 | */ | |
6cb8e530 PZ |
1729 | if (!vd->vdev_ops->vdev_op_leaf || !vdev_readable(vd)) |
1730 | return (0); | |
34dc7c2f | 1731 | |
6cb8e530 PZ |
1732 | /* |
1733 | * If we are performing an extreme rewind, we allow for a label that | |
1734 | * was modified at a point after the current txg. | |
a11c7aae PZ |
1735 | * If config lock is not held do not check for the txg. spa_sync could |
1736 | * be updating the vdev's label before updating spa_last_synced_txg. | |
6cb8e530 | 1737 | */ |
a11c7aae PZ |
1738 | if (spa->spa_extreme_rewind || spa_last_synced_txg(spa) == 0 || |
1739 | spa_config_held(spa, SCL_CONFIG, RW_WRITER) != SCL_CONFIG) | |
6cb8e530 PZ |
1740 | txg = UINT64_MAX; |
1741 | else | |
1742 | txg = spa_last_synced_txg(spa); | |
34dc7c2f | 1743 | |
6cb8e530 PZ |
1744 | if ((label = vdev_label_read_config(vd, txg)) == NULL) { |
1745 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1746 | VDEV_AUX_BAD_LABEL); | |
38a19edd PZ |
1747 | vdev_dbgmsg(vd, "vdev_validate: failed reading config for " |
1748 | "txg %llu", (u_longlong_t)txg); | |
6cb8e530 PZ |
1749 | return (0); |
1750 | } | |
428870ff | 1751 | |
6cb8e530 PZ |
1752 | /* |
1753 | * Determine if this vdev has been split off into another | |
1754 | * pool. If so, then refuse to open it. | |
1755 | */ | |
1756 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_SPLIT_GUID, | |
1757 | &aux_guid) == 0 && aux_guid == spa_guid(spa)) { | |
1758 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1759 | VDEV_AUX_SPLIT_POOL); | |
1760 | nvlist_free(label); | |
1761 | vdev_dbgmsg(vd, "vdev_validate: vdev split into other pool"); | |
1762 | return (0); | |
1763 | } | |
34dc7c2f | 1764 | |
6cb8e530 PZ |
1765 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID, &guid) != 0) { |
1766 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1767 | VDEV_AUX_CORRUPT_DATA); | |
1768 | nvlist_free(label); | |
1769 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", | |
1770 | ZPOOL_CONFIG_POOL_GUID); | |
1771 | return (0); | |
1772 | } | |
428870ff | 1773 | |
6cb8e530 PZ |
1774 | /* |
1775 | * If config is not trusted then ignore the spa guid check. This is | |
1776 | * necessary because if the machine crashed during a re-guid the new | |
1777 | * guid might have been written to all of the vdev labels, but not the | |
1778 | * cached config. The check will be performed again once we have the | |
1779 | * trusted config from the MOS. | |
1780 | */ | |
1781 | if (spa->spa_trust_config && guid != spa_guid(spa)) { | |
1782 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1783 | VDEV_AUX_CORRUPT_DATA); | |
1784 | nvlist_free(label); | |
1785 | vdev_dbgmsg(vd, "vdev_validate: vdev label pool_guid doesn't " | |
1786 | "match config (%llu != %llu)", (u_longlong_t)guid, | |
1787 | (u_longlong_t)spa_guid(spa)); | |
1788 | return (0); | |
1789 | } | |
1790 | ||
1791 | if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_VDEV_TREE, &nvl) | |
1792 | != 0 || nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_ORIG_GUID, | |
1793 | &aux_guid) != 0) | |
1794 | aux_guid = 0; | |
1795 | ||
1796 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0) { | |
1797 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1798 | VDEV_AUX_CORRUPT_DATA); | |
1799 | nvlist_free(label); | |
1800 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", | |
1801 | ZPOOL_CONFIG_GUID); | |
1802 | return (0); | |
1803 | } | |
1804 | ||
1805 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, &top_guid) | |
1806 | != 0) { | |
1807 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1808 | VDEV_AUX_CORRUPT_DATA); | |
1809 | nvlist_free(label); | |
1810 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", | |
1811 | ZPOOL_CONFIG_TOP_GUID); | |
1812 | return (0); | |
1813 | } | |
1814 | ||
1815 | /* | |
1816 | * If this vdev just became a top-level vdev because its sibling was | |
1817 | * detached, it will have adopted the parent's vdev guid -- but the | |
1818 | * label may or may not be on disk yet. Fortunately, either version | |
1819 | * of the label will have the same top guid, so if we're a top-level | |
1820 | * vdev, we can safely compare to that instead. | |
1821 | * However, if the config comes from a cachefile that failed to update | |
1822 | * after the detach, a top-level vdev will appear as a non top-level | |
1823 | * vdev in the config. Also relax the constraints if we perform an | |
1824 | * extreme rewind. | |
1825 | * | |
1826 | * If we split this vdev off instead, then we also check the | |
1827 | * original pool's guid. We don't want to consider the vdev | |
1828 | * corrupt if it is partway through a split operation. | |
1829 | */ | |
1830 | if (vd->vdev_guid != guid && vd->vdev_guid != aux_guid) { | |
1831 | boolean_t mismatch = B_FALSE; | |
1832 | if (spa->spa_trust_config && !spa->spa_extreme_rewind) { | |
1833 | if (vd != vd->vdev_top || vd->vdev_guid != top_guid) | |
1834 | mismatch = B_TRUE; | |
1835 | } else { | |
1836 | if (vd->vdev_guid != top_guid && | |
1837 | vd->vdev_top->vdev_guid != guid) | |
1838 | mismatch = B_TRUE; | |
34dc7c2f BB |
1839 | } |
1840 | ||
6cb8e530 | 1841 | if (mismatch) { |
34dc7c2f BB |
1842 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
1843 | VDEV_AUX_CORRUPT_DATA); | |
1844 | nvlist_free(label); | |
6cb8e530 PZ |
1845 | vdev_dbgmsg(vd, "vdev_validate: config guid " |
1846 | "doesn't match label guid"); | |
1847 | vdev_dbgmsg(vd, "CONFIG: guid %llu, top_guid %llu", | |
1848 | (u_longlong_t)vd->vdev_guid, | |
1849 | (u_longlong_t)vd->vdev_top->vdev_guid); | |
1850 | vdev_dbgmsg(vd, "LABEL: guid %llu, top_guid %llu, " | |
1851 | "aux_guid %llu", (u_longlong_t)guid, | |
1852 | (u_longlong_t)top_guid, (u_longlong_t)aux_guid); | |
34dc7c2f BB |
1853 | return (0); |
1854 | } | |
6cb8e530 | 1855 | } |
34dc7c2f | 1856 | |
6cb8e530 PZ |
1857 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, |
1858 | &state) != 0) { | |
1859 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1860 | VDEV_AUX_CORRUPT_DATA); | |
34dc7c2f | 1861 | nvlist_free(label); |
6cb8e530 PZ |
1862 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", |
1863 | ZPOOL_CONFIG_POOL_STATE); | |
1864 | return (0); | |
1865 | } | |
34dc7c2f | 1866 | |
6cb8e530 PZ |
1867 | nvlist_free(label); |
1868 | ||
1869 | /* | |
1870 | * If this is a verbatim import, no need to check the | |
1871 | * state of the pool. | |
1872 | */ | |
1873 | if (!(spa->spa_import_flags & ZFS_IMPORT_VERBATIM) && | |
1874 | spa_load_state(spa) == SPA_LOAD_OPEN && | |
1875 | state != POOL_STATE_ACTIVE) { | |
1876 | vdev_dbgmsg(vd, "vdev_validate: invalid pool state (%llu) " | |
1877 | "for spa %s", (u_longlong_t)state, spa->spa_name); | |
1878 | return (SET_ERROR(EBADF)); | |
1879 | } | |
1880 | ||
1881 | /* | |
1882 | * If we were able to open and validate a vdev that was | |
1883 | * previously marked permanently unavailable, clear that state | |
1884 | * now. | |
1885 | */ | |
1886 | if (vd->vdev_not_present) | |
1887 | vd->vdev_not_present = 0; | |
1888 | ||
1889 | return (0); | |
1890 | } | |
1891 | ||
1892 | static void | |
1893 | vdev_copy_path_impl(vdev_t *svd, vdev_t *dvd) | |
1894 | { | |
1895 | if (svd->vdev_path != NULL && dvd->vdev_path != NULL) { | |
1896 | if (strcmp(svd->vdev_path, dvd->vdev_path) != 0) { | |
1897 | zfs_dbgmsg("vdev_copy_path: vdev %llu: path changed " | |
1898 | "from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid, | |
1899 | dvd->vdev_path, svd->vdev_path); | |
1900 | spa_strfree(dvd->vdev_path); | |
1901 | dvd->vdev_path = spa_strdup(svd->vdev_path); | |
4a0ee12a | 1902 | } |
6cb8e530 PZ |
1903 | } else if (svd->vdev_path != NULL) { |
1904 | dvd->vdev_path = spa_strdup(svd->vdev_path); | |
1905 | zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'", | |
1906 | (u_longlong_t)dvd->vdev_guid, dvd->vdev_path); | |
1907 | } | |
1908 | } | |
34dc7c2f | 1909 | |
6cb8e530 PZ |
1910 | /* |
1911 | * Recursively copy vdev paths from one vdev to another. Source and destination | |
1912 | * vdev trees must have same geometry otherwise return error. Intended to copy | |
1913 | * paths from userland config into MOS config. | |
1914 | */ | |
1915 | int | |
1916 | vdev_copy_path_strict(vdev_t *svd, vdev_t *dvd) | |
1917 | { | |
1918 | if ((svd->vdev_ops == &vdev_missing_ops) || | |
1919 | (svd->vdev_ishole && dvd->vdev_ishole) || | |
1920 | (dvd->vdev_ops == &vdev_indirect_ops)) | |
1921 | return (0); | |
1922 | ||
1923 | if (svd->vdev_ops != dvd->vdev_ops) { | |
1924 | vdev_dbgmsg(svd, "vdev_copy_path: vdev type mismatch: %s != %s", | |
1925 | svd->vdev_ops->vdev_op_type, dvd->vdev_ops->vdev_op_type); | |
1926 | return (SET_ERROR(EINVAL)); | |
1927 | } | |
1928 | ||
1929 | if (svd->vdev_guid != dvd->vdev_guid) { | |
1930 | vdev_dbgmsg(svd, "vdev_copy_path: guids mismatch (%llu != " | |
1931 | "%llu)", (u_longlong_t)svd->vdev_guid, | |
1932 | (u_longlong_t)dvd->vdev_guid); | |
1933 | return (SET_ERROR(EINVAL)); | |
b128c09f | 1934 | } |
34dc7c2f | 1935 | |
6cb8e530 PZ |
1936 | if (svd->vdev_children != dvd->vdev_children) { |
1937 | vdev_dbgmsg(svd, "vdev_copy_path: children count mismatch: " | |
1938 | "%llu != %llu", (u_longlong_t)svd->vdev_children, | |
1939 | (u_longlong_t)dvd->vdev_children); | |
1940 | return (SET_ERROR(EINVAL)); | |
1941 | } | |
1942 | ||
1943 | for (uint64_t i = 0; i < svd->vdev_children; i++) { | |
1944 | int error = vdev_copy_path_strict(svd->vdev_child[i], | |
1945 | dvd->vdev_child[i]); | |
1946 | if (error != 0) | |
1947 | return (error); | |
1948 | } | |
1949 | ||
1950 | if (svd->vdev_ops->vdev_op_leaf) | |
1951 | vdev_copy_path_impl(svd, dvd); | |
1952 | ||
34dc7c2f BB |
1953 | return (0); |
1954 | } | |
1955 | ||
6cb8e530 PZ |
1956 | static void |
1957 | vdev_copy_path_search(vdev_t *stvd, vdev_t *dvd) | |
1958 | { | |
1959 | ASSERT(stvd->vdev_top == stvd); | |
1960 | ASSERT3U(stvd->vdev_id, ==, dvd->vdev_top->vdev_id); | |
1961 | ||
1962 | for (uint64_t i = 0; i < dvd->vdev_children; i++) { | |
1963 | vdev_copy_path_search(stvd, dvd->vdev_child[i]); | |
1964 | } | |
1965 | ||
1966 | if (!dvd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(dvd)) | |
1967 | return; | |
1968 | ||
1969 | /* | |
1970 | * The idea here is that while a vdev can shift positions within | |
1971 | * a top vdev (when replacing, attaching mirror, etc.) it cannot | |
1972 | * step outside of it. | |
1973 | */ | |
1974 | vdev_t *vd = vdev_lookup_by_guid(stvd, dvd->vdev_guid); | |
1975 | ||
1976 | if (vd == NULL || vd->vdev_ops != dvd->vdev_ops) | |
1977 | return; | |
1978 | ||
1979 | ASSERT(vd->vdev_ops->vdev_op_leaf); | |
1980 | ||
1981 | vdev_copy_path_impl(vd, dvd); | |
1982 | } | |
1983 | ||
1984 | /* | |
1985 | * Recursively copy vdev paths from one root vdev to another. Source and | |
1986 | * destination vdev trees may differ in geometry. For each destination leaf | |
1987 | * vdev, search a vdev with the same guid and top vdev id in the source. | |
1988 | * Intended to copy paths from userland config into MOS config. | |
1989 | */ | |
1990 | void | |
1991 | vdev_copy_path_relaxed(vdev_t *srvd, vdev_t *drvd) | |
1992 | { | |
1993 | uint64_t children = MIN(srvd->vdev_children, drvd->vdev_children); | |
1994 | ASSERT(srvd->vdev_ops == &vdev_root_ops); | |
1995 | ASSERT(drvd->vdev_ops == &vdev_root_ops); | |
1996 | ||
1997 | for (uint64_t i = 0; i < children; i++) { | |
1998 | vdev_copy_path_search(srvd->vdev_child[i], | |
1999 | drvd->vdev_child[i]); | |
2000 | } | |
2001 | } | |
2002 | ||
34dc7c2f BB |
2003 | /* |
2004 | * Close a virtual device. | |
2005 | */ | |
2006 | void | |
2007 | vdev_close(vdev_t *vd) | |
2008 | { | |
428870ff | 2009 | vdev_t *pvd = vd->vdev_parent; |
1fde1e37 | 2010 | ASSERTV(spa_t *spa = vd->vdev_spa); |
fb5f0bc8 BB |
2011 | |
2012 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
2013 | ||
428870ff BB |
2014 | /* |
2015 | * If our parent is reopening, then we are as well, unless we are | |
2016 | * going offline. | |
2017 | */ | |
2018 | if (pvd != NULL && pvd->vdev_reopening) | |
2019 | vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline); | |
2020 | ||
34dc7c2f BB |
2021 | vd->vdev_ops->vdev_op_close(vd); |
2022 | ||
2023 | vdev_cache_purge(vd); | |
2024 | ||
2025 | /* | |
9babb374 | 2026 | * We record the previous state before we close it, so that if we are |
34dc7c2f BB |
2027 | * doing a reopen(), we don't generate FMA ereports if we notice that |
2028 | * it's still faulted. | |
2029 | */ | |
2030 | vd->vdev_prevstate = vd->vdev_state; | |
2031 | ||
2032 | if (vd->vdev_offline) | |
2033 | vd->vdev_state = VDEV_STATE_OFFLINE; | |
2034 | else | |
2035 | vd->vdev_state = VDEV_STATE_CLOSED; | |
2036 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; | |
2037 | } | |
2038 | ||
428870ff BB |
2039 | void |
2040 | vdev_hold(vdev_t *vd) | |
2041 | { | |
2042 | spa_t *spa = vd->vdev_spa; | |
2043 | ||
2044 | ASSERT(spa_is_root(spa)); | |
2045 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) | |
2046 | return; | |
2047 | ||
1c27024e | 2048 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
2049 | vdev_hold(vd->vdev_child[c]); |
2050 | ||
2051 | if (vd->vdev_ops->vdev_op_leaf) | |
2052 | vd->vdev_ops->vdev_op_hold(vd); | |
2053 | } | |
2054 | ||
2055 | void | |
2056 | vdev_rele(vdev_t *vd) | |
2057 | { | |
d6320ddb | 2058 | ASSERT(spa_is_root(vd->vdev_spa)); |
1c27024e | 2059 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
2060 | vdev_rele(vd->vdev_child[c]); |
2061 | ||
2062 | if (vd->vdev_ops->vdev_op_leaf) | |
2063 | vd->vdev_ops->vdev_op_rele(vd); | |
2064 | } | |
2065 | ||
2066 | /* | |
2067 | * Reopen all interior vdevs and any unopened leaves. We don't actually | |
2068 | * reopen leaf vdevs which had previously been opened as they might deadlock | |
2069 | * on the spa_config_lock. Instead we only obtain the leaf's physical size. | |
2070 | * If the leaf has never been opened then open it, as usual. | |
2071 | */ | |
34dc7c2f BB |
2072 | void |
2073 | vdev_reopen(vdev_t *vd) | |
2074 | { | |
2075 | spa_t *spa = vd->vdev_spa; | |
2076 | ||
b128c09f | 2077 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); |
34dc7c2f | 2078 | |
428870ff BB |
2079 | /* set the reopening flag unless we're taking the vdev offline */ |
2080 | vd->vdev_reopening = !vd->vdev_offline; | |
34dc7c2f BB |
2081 | vdev_close(vd); |
2082 | (void) vdev_open(vd); | |
2083 | ||
2084 | /* | |
2085 | * Call vdev_validate() here to make sure we have the same device. | |
2086 | * Otherwise, a device with an invalid label could be successfully | |
2087 | * opened in response to vdev_reopen(). | |
2088 | */ | |
b128c09f BB |
2089 | if (vd->vdev_aux) { |
2090 | (void) vdev_validate_aux(vd); | |
2091 | if (vdev_readable(vd) && vdev_writeable(vd) && | |
9babb374 BB |
2092 | vd->vdev_aux == &spa->spa_l2cache && |
2093 | !l2arc_vdev_present(vd)) | |
2094 | l2arc_add_vdev(spa, vd); | |
b128c09f | 2095 | } else { |
6cb8e530 | 2096 | (void) vdev_validate(vd); |
b128c09f | 2097 | } |
34dc7c2f BB |
2098 | |
2099 | /* | |
2100 | * Reassess parent vdev's health. | |
2101 | */ | |
2102 | vdev_propagate_state(vd); | |
2103 | } | |
2104 | ||
2105 | int | |
2106 | vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing) | |
2107 | { | |
2108 | int error; | |
2109 | ||
2110 | /* | |
2111 | * Normally, partial opens (e.g. of a mirror) are allowed. | |
2112 | * For a create, however, we want to fail the request if | |
2113 | * there are any components we can't open. | |
2114 | */ | |
2115 | error = vdev_open(vd); | |
2116 | ||
2117 | if (error || vd->vdev_state != VDEV_STATE_HEALTHY) { | |
2118 | vdev_close(vd); | |
2119 | return (error ? error : ENXIO); | |
2120 | } | |
2121 | ||
2122 | /* | |
93cf2076 | 2123 | * Recursively load DTLs and initialize all labels. |
34dc7c2f | 2124 | */ |
93cf2076 GW |
2125 | if ((error = vdev_dtl_load(vd)) != 0 || |
2126 | (error = vdev_label_init(vd, txg, isreplacing ? | |
34dc7c2f BB |
2127 | VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) { |
2128 | vdev_close(vd); | |
2129 | return (error); | |
2130 | } | |
2131 | ||
2132 | return (0); | |
2133 | } | |
2134 | ||
34dc7c2f | 2135 | void |
9babb374 | 2136 | vdev_metaslab_set_size(vdev_t *vd) |
34dc7c2f | 2137 | { |
d2734cce | 2138 | uint64_t asize = vd->vdev_asize; |
e4e94ca3 DB |
2139 | uint64_t ms_count = asize >> vdev_default_ms_shift; |
2140 | uint64_t ms_shift; | |
d2734cce | 2141 | |
34dc7c2f | 2142 | /* |
e4e94ca3 DB |
2143 | * There are two dimensions to the metaslab sizing calculation: |
2144 | * the size of the metaslab and the count of metaslabs per vdev. | |
2145 | * In general, we aim for vdev_max_ms_count (200) metaslabs. The | |
2146 | * range of the dimensions are as follows: | |
2147 | * | |
2148 | * 2^29 <= ms_size <= 2^38 | |
2149 | * 16 <= ms_count <= 131,072 | |
2150 | * | |
2151 | * On the lower end of vdev sizes, we aim for metaslabs sizes of | |
2152 | * at least 512MB (2^29) to minimize fragmentation effects when | |
2153 | * testing with smaller devices. However, the count constraint | |
2154 | * of at least 16 metaslabs will override this minimum size goal. | |
2155 | * | |
2156 | * On the upper end of vdev sizes, we aim for a maximum metaslab | |
2157 | * size of 256GB. However, we will cap the total count to 2^17 | |
2158 | * metaslabs to keep our memory footprint in check. | |
2159 | * | |
2160 | * The net effect of applying above constrains is summarized below. | |
2161 | * | |
2162 | * vdev size metaslab count | |
2163 | * -------------|----------------- | |
2164 | * < 8GB ~16 | |
2165 | * 8GB - 100GB one per 512MB | |
2166 | * 100GB - 50TB ~200 | |
2167 | * 50TB - 32PB one per 256GB | |
2168 | * > 32PB ~131,072 | |
2169 | * ------------------------------- | |
34dc7c2f | 2170 | */ |
d2734cce | 2171 | |
e4e94ca3 | 2172 | if (ms_count < vdev_min_ms_count) |
d2734cce | 2173 | ms_shift = highbit64(asize / vdev_min_ms_count); |
e4e94ca3 | 2174 | else if (ms_count > vdev_max_ms_count) |
d2734cce | 2175 | ms_shift = highbit64(asize / vdev_max_ms_count); |
e4e94ca3 DB |
2176 | else |
2177 | ms_shift = vdev_default_ms_shift; | |
2178 | ||
2179 | if (ms_shift < SPA_MAXBLOCKSHIFT) { | |
2180 | ms_shift = SPA_MAXBLOCKSHIFT; | |
2181 | } else if (ms_shift > vdev_max_ms_shift) { | |
2182 | ms_shift = vdev_max_ms_shift; | |
2183 | /* cap the total count to constrain memory footprint */ | |
2184 | if ((asize >> ms_shift) > vdev_ms_count_limit) | |
2185 | ms_shift = highbit64(asize / vdev_ms_count_limit); | |
d2734cce SD |
2186 | } |
2187 | ||
2188 | vd->vdev_ms_shift = ms_shift; | |
2189 | ASSERT3U(vd->vdev_ms_shift, >=, SPA_MAXBLOCKSHIFT); | |
34dc7c2f BB |
2190 | } |
2191 | ||
2192 | void | |
2193 | vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg) | |
2194 | { | |
2195 | ASSERT(vd == vd->vdev_top); | |
a1d477c2 MA |
2196 | /* indirect vdevs don't have metaslabs or dtls */ |
2197 | ASSERT(vdev_is_concrete(vd) || flags == 0); | |
34dc7c2f | 2198 | ASSERT(ISP2(flags)); |
572e2857 | 2199 | ASSERT(spa_writeable(vd->vdev_spa)); |
34dc7c2f BB |
2200 | |
2201 | if (flags & VDD_METASLAB) | |
2202 | (void) txg_list_add(&vd->vdev_ms_list, arg, txg); | |
2203 | ||
2204 | if (flags & VDD_DTL) | |
2205 | (void) txg_list_add(&vd->vdev_dtl_list, arg, txg); | |
2206 | ||
2207 | (void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg); | |
2208 | } | |
2209 | ||
93cf2076 GW |
2210 | void |
2211 | vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg) | |
2212 | { | |
1c27024e | 2213 | for (int c = 0; c < vd->vdev_children; c++) |
93cf2076 GW |
2214 | vdev_dirty_leaves(vd->vdev_child[c], flags, txg); |
2215 | ||
2216 | if (vd->vdev_ops->vdev_op_leaf) | |
2217 | vdev_dirty(vd->vdev_top, flags, vd, txg); | |
2218 | } | |
2219 | ||
fb5f0bc8 BB |
2220 | /* |
2221 | * DTLs. | |
2222 | * | |
2223 | * A vdev's DTL (dirty time log) is the set of transaction groups for which | |
428870ff | 2224 | * the vdev has less than perfect replication. There are four kinds of DTL: |
fb5f0bc8 BB |
2225 | * |
2226 | * DTL_MISSING: txgs for which the vdev has no valid copies of the data | |
2227 | * | |
2228 | * DTL_PARTIAL: txgs for which data is available, but not fully replicated | |
2229 | * | |
2230 | * DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon | |
2231 | * scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of | |
2232 | * txgs that was scrubbed. | |
2233 | * | |
2234 | * DTL_OUTAGE: txgs which cannot currently be read, whether due to | |
2235 | * persistent errors or just some device being offline. | |
2236 | * Unlike the other three, the DTL_OUTAGE map is not generally | |
2237 | * maintained; it's only computed when needed, typically to | |
2238 | * determine whether a device can be detached. | |
2239 | * | |
2240 | * For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device | |
2241 | * either has the data or it doesn't. | |
2242 | * | |
2243 | * For interior vdevs such as mirror and RAID-Z the picture is more complex. | |
2244 | * A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because | |
2245 | * if any child is less than fully replicated, then so is its parent. | |
2246 | * A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs, | |
2247 | * comprising only those txgs which appear in 'maxfaults' or more children; | |
2248 | * those are the txgs we don't have enough replication to read. For example, | |
2249 | * double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2); | |
2250 | * thus, its DTL_MISSING consists of the set of txgs that appear in more than | |
2251 | * two child DTL_MISSING maps. | |
2252 | * | |
2253 | * It should be clear from the above that to compute the DTLs and outage maps | |
2254 | * for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps. | |
2255 | * Therefore, that is all we keep on disk. When loading the pool, or after | |
2256 | * a configuration change, we generate all other DTLs from first principles. | |
2257 | */ | |
34dc7c2f | 2258 | void |
fb5f0bc8 | 2259 | vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) |
34dc7c2f | 2260 | { |
93cf2076 | 2261 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 BB |
2262 | |
2263 | ASSERT(t < DTL_TYPES); | |
2264 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
572e2857 | 2265 | ASSERT(spa_writeable(vd->vdev_spa)); |
fb5f0bc8 | 2266 | |
a1d477c2 | 2267 | mutex_enter(&vd->vdev_dtl_lock); |
93cf2076 GW |
2268 | if (!range_tree_contains(rt, txg, size)) |
2269 | range_tree_add(rt, txg, size); | |
a1d477c2 | 2270 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2271 | } |
2272 | ||
fb5f0bc8 BB |
2273 | boolean_t |
2274 | vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) | |
34dc7c2f | 2275 | { |
93cf2076 | 2276 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 | 2277 | boolean_t dirty = B_FALSE; |
34dc7c2f | 2278 | |
fb5f0bc8 BB |
2279 | ASSERT(t < DTL_TYPES); |
2280 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
34dc7c2f | 2281 | |
a1d477c2 MA |
2282 | /* |
2283 | * While we are loading the pool, the DTLs have not been loaded yet. | |
2284 | * Ignore the DTLs and try all devices. This avoids a recursive | |
2285 | * mutex enter on the vdev_dtl_lock, and also makes us try hard | |
2286 | * when loading the pool (relying on the checksum to ensure that | |
2287 | * we get the right data -- note that we while loading, we are | |
2288 | * only reading the MOS, which is always checksummed). | |
2289 | */ | |
2290 | if (vd->vdev_spa->spa_load_state != SPA_LOAD_NONE) | |
2291 | return (B_FALSE); | |
2292 | ||
2293 | mutex_enter(&vd->vdev_dtl_lock); | |
d2734cce | 2294 | if (!range_tree_is_empty(rt)) |
93cf2076 | 2295 | dirty = range_tree_contains(rt, txg, size); |
a1d477c2 | 2296 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2297 | |
2298 | return (dirty); | |
2299 | } | |
2300 | ||
fb5f0bc8 BB |
2301 | boolean_t |
2302 | vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t) | |
2303 | { | |
93cf2076 | 2304 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 BB |
2305 | boolean_t empty; |
2306 | ||
a1d477c2 | 2307 | mutex_enter(&vd->vdev_dtl_lock); |
d2734cce | 2308 | empty = range_tree_is_empty(rt); |
a1d477c2 | 2309 | mutex_exit(&vd->vdev_dtl_lock); |
fb5f0bc8 BB |
2310 | |
2311 | return (empty); | |
2312 | } | |
2313 | ||
3d6da72d IH |
2314 | /* |
2315 | * Returns B_TRUE if vdev determines offset needs to be resilvered. | |
2316 | */ | |
2317 | boolean_t | |
2318 | vdev_dtl_need_resilver(vdev_t *vd, uint64_t offset, size_t psize) | |
2319 | { | |
2320 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
2321 | ||
2322 | if (vd->vdev_ops->vdev_op_need_resilver == NULL || | |
2323 | vd->vdev_ops->vdev_op_leaf) | |
2324 | return (B_TRUE); | |
2325 | ||
2326 | return (vd->vdev_ops->vdev_op_need_resilver(vd, offset, psize)); | |
2327 | } | |
2328 | ||
5d1f7fb6 GW |
2329 | /* |
2330 | * Returns the lowest txg in the DTL range. | |
2331 | */ | |
2332 | static uint64_t | |
2333 | vdev_dtl_min(vdev_t *vd) | |
2334 | { | |
93cf2076 | 2335 | range_seg_t *rs; |
5d1f7fb6 GW |
2336 | |
2337 | ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); | |
93cf2076 | 2338 | ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); |
5d1f7fb6 GW |
2339 | ASSERT0(vd->vdev_children); |
2340 | ||
93cf2076 GW |
2341 | rs = avl_first(&vd->vdev_dtl[DTL_MISSING]->rt_root); |
2342 | return (rs->rs_start - 1); | |
5d1f7fb6 GW |
2343 | } |
2344 | ||
2345 | /* | |
2346 | * Returns the highest txg in the DTL. | |
2347 | */ | |
2348 | static uint64_t | |
2349 | vdev_dtl_max(vdev_t *vd) | |
2350 | { | |
93cf2076 | 2351 | range_seg_t *rs; |
5d1f7fb6 GW |
2352 | |
2353 | ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); | |
93cf2076 | 2354 | ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); |
5d1f7fb6 GW |
2355 | ASSERT0(vd->vdev_children); |
2356 | ||
93cf2076 GW |
2357 | rs = avl_last(&vd->vdev_dtl[DTL_MISSING]->rt_root); |
2358 | return (rs->rs_end); | |
5d1f7fb6 GW |
2359 | } |
2360 | ||
2361 | /* | |
2362 | * Determine if a resilvering vdev should remove any DTL entries from | |
2363 | * its range. If the vdev was resilvering for the entire duration of the | |
2364 | * scan then it should excise that range from its DTLs. Otherwise, this | |
2365 | * vdev is considered partially resilvered and should leave its DTL | |
2366 | * entries intact. The comment in vdev_dtl_reassess() describes how we | |
2367 | * excise the DTLs. | |
2368 | */ | |
2369 | static boolean_t | |
2370 | vdev_dtl_should_excise(vdev_t *vd) | |
2371 | { | |
2372 | spa_t *spa = vd->vdev_spa; | |
2373 | dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; | |
2374 | ||
2375 | ASSERT0(scn->scn_phys.scn_errors); | |
2376 | ASSERT0(vd->vdev_children); | |
2377 | ||
335b251a MA |
2378 | if (vd->vdev_state < VDEV_STATE_DEGRADED) |
2379 | return (B_FALSE); | |
2380 | ||
5d1f7fb6 | 2381 | if (vd->vdev_resilver_txg == 0 || |
d2734cce | 2382 | range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) |
5d1f7fb6 GW |
2383 | return (B_TRUE); |
2384 | ||
2385 | /* | |
2386 | * When a resilver is initiated the scan will assign the scn_max_txg | |
2387 | * value to the highest txg value that exists in all DTLs. If this | |
2388 | * device's max DTL is not part of this scan (i.e. it is not in | |
2389 | * the range (scn_min_txg, scn_max_txg] then it is not eligible | |
2390 | * for excision. | |
2391 | */ | |
2392 | if (vdev_dtl_max(vd) <= scn->scn_phys.scn_max_txg) { | |
2393 | ASSERT3U(scn->scn_phys.scn_min_txg, <=, vdev_dtl_min(vd)); | |
2394 | ASSERT3U(scn->scn_phys.scn_min_txg, <, vd->vdev_resilver_txg); | |
2395 | ASSERT3U(vd->vdev_resilver_txg, <=, scn->scn_phys.scn_max_txg); | |
2396 | return (B_TRUE); | |
2397 | } | |
2398 | return (B_FALSE); | |
2399 | } | |
2400 | ||
34dc7c2f BB |
2401 | /* |
2402 | * Reassess DTLs after a config change or scrub completion. | |
2403 | */ | |
2404 | void | |
2405 | vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, int scrub_done) | |
2406 | { | |
2407 | spa_t *spa = vd->vdev_spa; | |
fb5f0bc8 | 2408 | avl_tree_t reftree; |
1c27024e | 2409 | int minref; |
34dc7c2f | 2410 | |
fb5f0bc8 | 2411 | ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); |
34dc7c2f | 2412 | |
1c27024e | 2413 | for (int c = 0; c < vd->vdev_children; c++) |
fb5f0bc8 BB |
2414 | vdev_dtl_reassess(vd->vdev_child[c], txg, |
2415 | scrub_txg, scrub_done); | |
2416 | ||
a1d477c2 | 2417 | if (vd == spa->spa_root_vdev || !vdev_is_concrete(vd) || vd->vdev_aux) |
fb5f0bc8 BB |
2418 | return; |
2419 | ||
2420 | if (vd->vdev_ops->vdev_op_leaf) { | |
428870ff BB |
2421 | dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; |
2422 | ||
34dc7c2f | 2423 | mutex_enter(&vd->vdev_dtl_lock); |
5d1f7fb6 | 2424 | |
02638a30 TC |
2425 | /* |
2426 | * If requested, pretend the scan completed cleanly. | |
2427 | */ | |
2428 | if (zfs_scan_ignore_errors && scn) | |
2429 | scn->scn_phys.scn_errors = 0; | |
2430 | ||
5d1f7fb6 GW |
2431 | /* |
2432 | * If we've completed a scan cleanly then determine | |
2433 | * if this vdev should remove any DTLs. We only want to | |
2434 | * excise regions on vdevs that were available during | |
2435 | * the entire duration of this scan. | |
2436 | */ | |
b128c09f | 2437 | if (scrub_txg != 0 && |
428870ff | 2438 | (spa->spa_scrub_started || |
5d1f7fb6 GW |
2439 | (scn != NULL && scn->scn_phys.scn_errors == 0)) && |
2440 | vdev_dtl_should_excise(vd)) { | |
b128c09f BB |
2441 | /* |
2442 | * We completed a scrub up to scrub_txg. If we | |
2443 | * did it without rebooting, then the scrub dtl | |
2444 | * will be valid, so excise the old region and | |
2445 | * fold in the scrub dtl. Otherwise, leave the | |
2446 | * dtl as-is if there was an error. | |
fb5f0bc8 BB |
2447 | * |
2448 | * There's little trick here: to excise the beginning | |
2449 | * of the DTL_MISSING map, we put it into a reference | |
2450 | * tree and then add a segment with refcnt -1 that | |
2451 | * covers the range [0, scrub_txg). This means | |
2452 | * that each txg in that range has refcnt -1 or 0. | |
2453 | * We then add DTL_SCRUB with a refcnt of 2, so that | |
2454 | * entries in the range [0, scrub_txg) will have a | |
2455 | * positive refcnt -- either 1 or 2. We then convert | |
2456 | * the reference tree into the new DTL_MISSING map. | |
b128c09f | 2457 | */ |
93cf2076 GW |
2458 | space_reftree_create(&reftree); |
2459 | space_reftree_add_map(&reftree, | |
2460 | vd->vdev_dtl[DTL_MISSING], 1); | |
2461 | space_reftree_add_seg(&reftree, 0, scrub_txg, -1); | |
2462 | space_reftree_add_map(&reftree, | |
2463 | vd->vdev_dtl[DTL_SCRUB], 2); | |
2464 | space_reftree_generate_map(&reftree, | |
2465 | vd->vdev_dtl[DTL_MISSING], 1); | |
2466 | space_reftree_destroy(&reftree); | |
34dc7c2f | 2467 | } |
93cf2076 GW |
2468 | range_tree_vacate(vd->vdev_dtl[DTL_PARTIAL], NULL, NULL); |
2469 | range_tree_walk(vd->vdev_dtl[DTL_MISSING], | |
2470 | range_tree_add, vd->vdev_dtl[DTL_PARTIAL]); | |
34dc7c2f | 2471 | if (scrub_done) |
93cf2076 GW |
2472 | range_tree_vacate(vd->vdev_dtl[DTL_SCRUB], NULL, NULL); |
2473 | range_tree_vacate(vd->vdev_dtl[DTL_OUTAGE], NULL, NULL); | |
fb5f0bc8 | 2474 | if (!vdev_readable(vd)) |
93cf2076 | 2475 | range_tree_add(vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL); |
fb5f0bc8 | 2476 | else |
93cf2076 GW |
2477 | range_tree_walk(vd->vdev_dtl[DTL_MISSING], |
2478 | range_tree_add, vd->vdev_dtl[DTL_OUTAGE]); | |
5d1f7fb6 GW |
2479 | |
2480 | /* | |
2481 | * If the vdev was resilvering and no longer has any | |
d14fa5db | 2482 | * DTLs then reset its resilvering flag and dirty |
2483 | * the top level so that we persist the change. | |
5d1f7fb6 GW |
2484 | */ |
2485 | if (vd->vdev_resilver_txg != 0 && | |
d2734cce SD |
2486 | range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) && |
2487 | range_tree_is_empty(vd->vdev_dtl[DTL_OUTAGE])) { | |
5d1f7fb6 | 2488 | vd->vdev_resilver_txg = 0; |
d14fa5db | 2489 | vdev_config_dirty(vd->vdev_top); |
2490 | } | |
5d1f7fb6 | 2491 | |
34dc7c2f | 2492 | mutex_exit(&vd->vdev_dtl_lock); |
b128c09f | 2493 | |
34dc7c2f BB |
2494 | if (txg != 0) |
2495 | vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg); | |
2496 | return; | |
2497 | } | |
2498 | ||
34dc7c2f | 2499 | mutex_enter(&vd->vdev_dtl_lock); |
1c27024e | 2500 | for (int t = 0; t < DTL_TYPES; t++) { |
428870ff BB |
2501 | /* account for child's outage in parent's missing map */ |
2502 | int s = (t == DTL_MISSING) ? DTL_OUTAGE: t; | |
fb5f0bc8 BB |
2503 | if (t == DTL_SCRUB) |
2504 | continue; /* leaf vdevs only */ | |
2505 | if (t == DTL_PARTIAL) | |
2506 | minref = 1; /* i.e. non-zero */ | |
2507 | else if (vd->vdev_nparity != 0) | |
2508 | minref = vd->vdev_nparity + 1; /* RAID-Z */ | |
2509 | else | |
2510 | minref = vd->vdev_children; /* any kind of mirror */ | |
93cf2076 | 2511 | space_reftree_create(&reftree); |
1c27024e | 2512 | for (int c = 0; c < vd->vdev_children; c++) { |
fb5f0bc8 BB |
2513 | vdev_t *cvd = vd->vdev_child[c]; |
2514 | mutex_enter(&cvd->vdev_dtl_lock); | |
93cf2076 | 2515 | space_reftree_add_map(&reftree, cvd->vdev_dtl[s], 1); |
fb5f0bc8 BB |
2516 | mutex_exit(&cvd->vdev_dtl_lock); |
2517 | } | |
93cf2076 GW |
2518 | space_reftree_generate_map(&reftree, vd->vdev_dtl[t], minref); |
2519 | space_reftree_destroy(&reftree); | |
34dc7c2f | 2520 | } |
fb5f0bc8 | 2521 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2522 | } |
2523 | ||
93cf2076 | 2524 | int |
34dc7c2f BB |
2525 | vdev_dtl_load(vdev_t *vd) |
2526 | { | |
2527 | spa_t *spa = vd->vdev_spa; | |
34dc7c2f | 2528 | objset_t *mos = spa->spa_meta_objset; |
93cf2076 | 2529 | int error = 0; |
34dc7c2f | 2530 | |
93cf2076 | 2531 | if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) { |
a1d477c2 | 2532 | ASSERT(vdev_is_concrete(vd)); |
34dc7c2f | 2533 | |
93cf2076 | 2534 | error = space_map_open(&vd->vdev_dtl_sm, mos, |
a1d477c2 | 2535 | vd->vdev_dtl_object, 0, -1ULL, 0); |
93cf2076 GW |
2536 | if (error) |
2537 | return (error); | |
2538 | ASSERT(vd->vdev_dtl_sm != NULL); | |
34dc7c2f | 2539 | |
93cf2076 | 2540 | mutex_enter(&vd->vdev_dtl_lock); |
428870ff | 2541 | |
93cf2076 GW |
2542 | /* |
2543 | * Now that we've opened the space_map we need to update | |
2544 | * the in-core DTL. | |
2545 | */ | |
2546 | space_map_update(vd->vdev_dtl_sm); | |
34dc7c2f | 2547 | |
93cf2076 GW |
2548 | error = space_map_load(vd->vdev_dtl_sm, |
2549 | vd->vdev_dtl[DTL_MISSING], SM_ALLOC); | |
2550 | mutex_exit(&vd->vdev_dtl_lock); | |
34dc7c2f | 2551 | |
93cf2076 GW |
2552 | return (error); |
2553 | } | |
2554 | ||
1c27024e | 2555 | for (int c = 0; c < vd->vdev_children; c++) { |
93cf2076 GW |
2556 | error = vdev_dtl_load(vd->vdev_child[c]); |
2557 | if (error != 0) | |
2558 | break; | |
2559 | } | |
34dc7c2f BB |
2560 | |
2561 | return (error); | |
2562 | } | |
2563 | ||
e0ab3ab5 JS |
2564 | void |
2565 | vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, dmu_tx_t *tx) | |
2566 | { | |
2567 | spa_t *spa = vd->vdev_spa; | |
2568 | ||
2569 | VERIFY0(zap_destroy(spa->spa_meta_objset, zapobj, tx)); | |
2570 | VERIFY0(zap_remove_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, | |
2571 | zapobj, tx)); | |
2572 | } | |
2573 | ||
2574 | uint64_t | |
2575 | vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx) | |
2576 | { | |
2577 | spa_t *spa = vd->vdev_spa; | |
2578 | uint64_t zap = zap_create(spa->spa_meta_objset, DMU_OTN_ZAP_METADATA, | |
2579 | DMU_OT_NONE, 0, tx); | |
2580 | ||
2581 | ASSERT(zap != 0); | |
2582 | VERIFY0(zap_add_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, | |
2583 | zap, tx)); | |
2584 | ||
2585 | return (zap); | |
2586 | } | |
2587 | ||
2588 | void | |
2589 | vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx) | |
2590 | { | |
e0ab3ab5 JS |
2591 | if (vd->vdev_ops != &vdev_hole_ops && |
2592 | vd->vdev_ops != &vdev_missing_ops && | |
2593 | vd->vdev_ops != &vdev_root_ops && | |
2594 | !vd->vdev_top->vdev_removing) { | |
2595 | if (vd->vdev_ops->vdev_op_leaf && vd->vdev_leaf_zap == 0) { | |
2596 | vd->vdev_leaf_zap = vdev_create_link_zap(vd, tx); | |
2597 | } | |
2598 | if (vd == vd->vdev_top && vd->vdev_top_zap == 0) { | |
2599 | vd->vdev_top_zap = vdev_create_link_zap(vd, tx); | |
2600 | } | |
2601 | } | |
1c27024e | 2602 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
2603 | vdev_construct_zaps(vd->vdev_child[i], tx); |
2604 | } | |
2605 | } | |
2606 | ||
34dc7c2f BB |
2607 | void |
2608 | vdev_dtl_sync(vdev_t *vd, uint64_t txg) | |
2609 | { | |
2610 | spa_t *spa = vd->vdev_spa; | |
93cf2076 | 2611 | range_tree_t *rt = vd->vdev_dtl[DTL_MISSING]; |
34dc7c2f | 2612 | objset_t *mos = spa->spa_meta_objset; |
93cf2076 | 2613 | range_tree_t *rtsync; |
34dc7c2f | 2614 | dmu_tx_t *tx; |
93cf2076 | 2615 | uint64_t object = space_map_object(vd->vdev_dtl_sm); |
34dc7c2f | 2616 | |
a1d477c2 | 2617 | ASSERT(vdev_is_concrete(vd)); |
93cf2076 | 2618 | ASSERT(vd->vdev_ops->vdev_op_leaf); |
428870ff | 2619 | |
34dc7c2f BB |
2620 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); |
2621 | ||
93cf2076 GW |
2622 | if (vd->vdev_detached || vd->vdev_top->vdev_removing) { |
2623 | mutex_enter(&vd->vdev_dtl_lock); | |
2624 | space_map_free(vd->vdev_dtl_sm, tx); | |
2625 | space_map_close(vd->vdev_dtl_sm); | |
2626 | vd->vdev_dtl_sm = NULL; | |
2627 | mutex_exit(&vd->vdev_dtl_lock); | |
e0ab3ab5 JS |
2628 | |
2629 | /* | |
2630 | * We only destroy the leaf ZAP for detached leaves or for | |
2631 | * removed log devices. Removed data devices handle leaf ZAP | |
2632 | * cleanup later, once cancellation is no longer possible. | |
2633 | */ | |
2634 | if (vd->vdev_leaf_zap != 0 && (vd->vdev_detached || | |
2635 | vd->vdev_top->vdev_islog)) { | |
2636 | vdev_destroy_unlink_zap(vd, vd->vdev_leaf_zap, tx); | |
2637 | vd->vdev_leaf_zap = 0; | |
2638 | } | |
2639 | ||
34dc7c2f | 2640 | dmu_tx_commit(tx); |
34dc7c2f BB |
2641 | return; |
2642 | } | |
2643 | ||
93cf2076 GW |
2644 | if (vd->vdev_dtl_sm == NULL) { |
2645 | uint64_t new_object; | |
2646 | ||
d2734cce | 2647 | new_object = space_map_alloc(mos, vdev_dtl_sm_blksz, tx); |
93cf2076 GW |
2648 | VERIFY3U(new_object, !=, 0); |
2649 | ||
2650 | VERIFY0(space_map_open(&vd->vdev_dtl_sm, mos, new_object, | |
a1d477c2 | 2651 | 0, -1ULL, 0)); |
93cf2076 | 2652 | ASSERT(vd->vdev_dtl_sm != NULL); |
34dc7c2f BB |
2653 | } |
2654 | ||
a1d477c2 | 2655 | rtsync = range_tree_create(NULL, NULL); |
34dc7c2f BB |
2656 | |
2657 | mutex_enter(&vd->vdev_dtl_lock); | |
93cf2076 | 2658 | range_tree_walk(rt, range_tree_add, rtsync); |
34dc7c2f BB |
2659 | mutex_exit(&vd->vdev_dtl_lock); |
2660 | ||
d2734cce | 2661 | space_map_truncate(vd->vdev_dtl_sm, vdev_dtl_sm_blksz, tx); |
4d044c4c | 2662 | space_map_write(vd->vdev_dtl_sm, rtsync, SM_ALLOC, SM_NO_VDEVID, tx); |
93cf2076 | 2663 | range_tree_vacate(rtsync, NULL, NULL); |
34dc7c2f | 2664 | |
93cf2076 | 2665 | range_tree_destroy(rtsync); |
34dc7c2f | 2666 | |
93cf2076 GW |
2667 | /* |
2668 | * If the object for the space map has changed then dirty | |
2669 | * the top level so that we update the config. | |
2670 | */ | |
2671 | if (object != space_map_object(vd->vdev_dtl_sm)) { | |
4a0ee12a PZ |
2672 | vdev_dbgmsg(vd, "txg %llu, spa %s, DTL old object %llu, " |
2673 | "new object %llu", (u_longlong_t)txg, spa_name(spa), | |
2674 | (u_longlong_t)object, | |
2675 | (u_longlong_t)space_map_object(vd->vdev_dtl_sm)); | |
93cf2076 GW |
2676 | vdev_config_dirty(vd->vdev_top); |
2677 | } | |
34dc7c2f BB |
2678 | |
2679 | dmu_tx_commit(tx); | |
93cf2076 GW |
2680 | |
2681 | mutex_enter(&vd->vdev_dtl_lock); | |
2682 | space_map_update(vd->vdev_dtl_sm); | |
2683 | mutex_exit(&vd->vdev_dtl_lock); | |
34dc7c2f BB |
2684 | } |
2685 | ||
fb5f0bc8 BB |
2686 | /* |
2687 | * Determine whether the specified vdev can be offlined/detached/removed | |
2688 | * without losing data. | |
2689 | */ | |
2690 | boolean_t | |
2691 | vdev_dtl_required(vdev_t *vd) | |
2692 | { | |
2693 | spa_t *spa = vd->vdev_spa; | |
2694 | vdev_t *tvd = vd->vdev_top; | |
2695 | uint8_t cant_read = vd->vdev_cant_read; | |
2696 | boolean_t required; | |
2697 | ||
2698 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
2699 | ||
2700 | if (vd == spa->spa_root_vdev || vd == tvd) | |
2701 | return (B_TRUE); | |
2702 | ||
2703 | /* | |
2704 | * Temporarily mark the device as unreadable, and then determine | |
2705 | * whether this results in any DTL outages in the top-level vdev. | |
2706 | * If not, we can safely offline/detach/remove the device. | |
2707 | */ | |
2708 | vd->vdev_cant_read = B_TRUE; | |
2709 | vdev_dtl_reassess(tvd, 0, 0, B_FALSE); | |
2710 | required = !vdev_dtl_empty(tvd, DTL_OUTAGE); | |
2711 | vd->vdev_cant_read = cant_read; | |
2712 | vdev_dtl_reassess(tvd, 0, 0, B_FALSE); | |
2713 | ||
572e2857 BB |
2714 | if (!required && zio_injection_enabled) |
2715 | required = !!zio_handle_device_injection(vd, NULL, ECHILD); | |
2716 | ||
fb5f0bc8 BB |
2717 | return (required); |
2718 | } | |
2719 | ||
b128c09f BB |
2720 | /* |
2721 | * Determine if resilver is needed, and if so the txg range. | |
2722 | */ | |
2723 | boolean_t | |
2724 | vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp) | |
2725 | { | |
2726 | boolean_t needed = B_FALSE; | |
2727 | uint64_t thismin = UINT64_MAX; | |
2728 | uint64_t thismax = 0; | |
2729 | ||
2730 | if (vd->vdev_children == 0) { | |
2731 | mutex_enter(&vd->vdev_dtl_lock); | |
d2734cce | 2732 | if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) && |
fb5f0bc8 | 2733 | vdev_writeable(vd)) { |
b128c09f | 2734 | |
5d1f7fb6 GW |
2735 | thismin = vdev_dtl_min(vd); |
2736 | thismax = vdev_dtl_max(vd); | |
b128c09f BB |
2737 | needed = B_TRUE; |
2738 | } | |
2739 | mutex_exit(&vd->vdev_dtl_lock); | |
2740 | } else { | |
1c27024e | 2741 | for (int c = 0; c < vd->vdev_children; c++) { |
b128c09f BB |
2742 | vdev_t *cvd = vd->vdev_child[c]; |
2743 | uint64_t cmin, cmax; | |
2744 | ||
2745 | if (vdev_resilver_needed(cvd, &cmin, &cmax)) { | |
2746 | thismin = MIN(thismin, cmin); | |
2747 | thismax = MAX(thismax, cmax); | |
2748 | needed = B_TRUE; | |
2749 | } | |
2750 | } | |
2751 | } | |
2752 | ||
2753 | if (needed && minp) { | |
2754 | *minp = thismin; | |
2755 | *maxp = thismax; | |
2756 | } | |
2757 | return (needed); | |
2758 | } | |
2759 | ||
d2734cce SD |
2760 | /* |
2761 | * Gets the checkpoint space map object from the vdev's ZAP. | |
2762 | * Returns the spacemap object, or 0 if it wasn't in the ZAP | |
2763 | * or the ZAP doesn't exist yet. | |
2764 | */ | |
2765 | int | |
2766 | vdev_checkpoint_sm_object(vdev_t *vd) | |
2767 | { | |
2768 | ASSERT0(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER)); | |
2769 | if (vd->vdev_top_zap == 0) { | |
2770 | return (0); | |
2771 | } | |
2772 | ||
2773 | uint64_t sm_obj = 0; | |
2774 | int err = zap_lookup(spa_meta_objset(vd->vdev_spa), vd->vdev_top_zap, | |
2775 | VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, &sm_obj); | |
2776 | ||
2777 | VERIFY(err == 0 || err == ENOENT); | |
2778 | ||
2779 | return (sm_obj); | |
2780 | } | |
2781 | ||
a1d477c2 | 2782 | int |
34dc7c2f BB |
2783 | vdev_load(vdev_t *vd) |
2784 | { | |
a1d477c2 MA |
2785 | int error = 0; |
2786 | ||
34dc7c2f BB |
2787 | /* |
2788 | * Recursively load all children. | |
2789 | */ | |
a1d477c2 MA |
2790 | for (int c = 0; c < vd->vdev_children; c++) { |
2791 | error = vdev_load(vd->vdev_child[c]); | |
2792 | if (error != 0) { | |
2793 | return (error); | |
2794 | } | |
2795 | } | |
2796 | ||
2797 | vdev_set_deflate_ratio(vd); | |
34dc7c2f BB |
2798 | |
2799 | /* | |
2800 | * If this is a top-level vdev, initialize its metaslabs. | |
2801 | */ | |
a1d477c2 MA |
2802 | if (vd == vd->vdev_top && vdev_is_concrete(vd)) { |
2803 | if (vd->vdev_ashift == 0 || vd->vdev_asize == 0) { | |
2804 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2805 | VDEV_AUX_CORRUPT_DATA); | |
4a0ee12a PZ |
2806 | vdev_dbgmsg(vd, "vdev_load: invalid size. ashift=%llu, " |
2807 | "asize=%llu", (u_longlong_t)vd->vdev_ashift, | |
2808 | (u_longlong_t)vd->vdev_asize); | |
a1d477c2 MA |
2809 | return (SET_ERROR(ENXIO)); |
2810 | } else if ((error = vdev_metaslab_init(vd, 0)) != 0) { | |
4a0ee12a PZ |
2811 | vdev_dbgmsg(vd, "vdev_load: metaslab_init failed " |
2812 | "[error=%d]", error); | |
a1d477c2 MA |
2813 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
2814 | VDEV_AUX_CORRUPT_DATA); | |
2815 | return (error); | |
2816 | } | |
d2734cce SD |
2817 | |
2818 | uint64_t checkpoint_sm_obj = vdev_checkpoint_sm_object(vd); | |
2819 | if (checkpoint_sm_obj != 0) { | |
2820 | objset_t *mos = spa_meta_objset(vd->vdev_spa); | |
2821 | ASSERT(vd->vdev_asize != 0); | |
2822 | ASSERT3P(vd->vdev_checkpoint_sm, ==, NULL); | |
2823 | ||
2824 | if ((error = space_map_open(&vd->vdev_checkpoint_sm, | |
2825 | mos, checkpoint_sm_obj, 0, vd->vdev_asize, | |
2826 | vd->vdev_ashift))) { | |
2827 | vdev_dbgmsg(vd, "vdev_load: space_map_open " | |
2828 | "failed for checkpoint spacemap (obj %llu) " | |
2829 | "[error=%d]", | |
2830 | (u_longlong_t)checkpoint_sm_obj, error); | |
2831 | return (error); | |
2832 | } | |
2833 | ASSERT3P(vd->vdev_checkpoint_sm, !=, NULL); | |
2834 | space_map_update(vd->vdev_checkpoint_sm); | |
2835 | ||
2836 | /* | |
2837 | * Since the checkpoint_sm contains free entries | |
2838 | * exclusively we can use sm_alloc to indicate the | |
2839 | * culmulative checkpointed space that has been freed. | |
2840 | */ | |
2841 | vd->vdev_stat.vs_checkpoint_space = | |
2842 | -vd->vdev_checkpoint_sm->sm_alloc; | |
2843 | vd->vdev_spa->spa_checkpoint_info.sci_dspace += | |
2844 | vd->vdev_stat.vs_checkpoint_space; | |
2845 | } | |
a1d477c2 MA |
2846 | } |
2847 | ||
34dc7c2f BB |
2848 | /* |
2849 | * If this is a leaf vdev, load its DTL. | |
2850 | */ | |
a1d477c2 | 2851 | if (vd->vdev_ops->vdev_op_leaf && (error = vdev_dtl_load(vd)) != 0) { |
34dc7c2f BB |
2852 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
2853 | VDEV_AUX_CORRUPT_DATA); | |
4a0ee12a PZ |
2854 | vdev_dbgmsg(vd, "vdev_load: vdev_dtl_load failed " |
2855 | "[error=%d]", error); | |
a1d477c2 MA |
2856 | return (error); |
2857 | } | |
2858 | ||
2859 | uint64_t obsolete_sm_object = vdev_obsolete_sm_object(vd); | |
2860 | if (obsolete_sm_object != 0) { | |
2861 | objset_t *mos = vd->vdev_spa->spa_meta_objset; | |
2862 | ASSERT(vd->vdev_asize != 0); | |
d2734cce | 2863 | ASSERT3P(vd->vdev_obsolete_sm, ==, NULL); |
a1d477c2 MA |
2864 | |
2865 | if ((error = space_map_open(&vd->vdev_obsolete_sm, mos, | |
2866 | obsolete_sm_object, 0, vd->vdev_asize, 0))) { | |
2867 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2868 | VDEV_AUX_CORRUPT_DATA); | |
4a0ee12a PZ |
2869 | vdev_dbgmsg(vd, "vdev_load: space_map_open failed for " |
2870 | "obsolete spacemap (obj %llu) [error=%d]", | |
2871 | (u_longlong_t)obsolete_sm_object, error); | |
a1d477c2 MA |
2872 | return (error); |
2873 | } | |
2874 | space_map_update(vd->vdev_obsolete_sm); | |
2875 | } | |
2876 | ||
2877 | return (0); | |
34dc7c2f BB |
2878 | } |
2879 | ||
2880 | /* | |
2881 | * The special vdev case is used for hot spares and l2cache devices. Its | |
2882 | * sole purpose it to set the vdev state for the associated vdev. To do this, | |
2883 | * we make sure that we can open the underlying device, then try to read the | |
2884 | * label, and make sure that the label is sane and that it hasn't been | |
2885 | * repurposed to another pool. | |
2886 | */ | |
2887 | int | |
2888 | vdev_validate_aux(vdev_t *vd) | |
2889 | { | |
2890 | nvlist_t *label; | |
2891 | uint64_t guid, version; | |
2892 | uint64_t state; | |
2893 | ||
b128c09f BB |
2894 | if (!vdev_readable(vd)) |
2895 | return (0); | |
2896 | ||
3bc7e0fb | 2897 | if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) { |
34dc7c2f BB |
2898 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, |
2899 | VDEV_AUX_CORRUPT_DATA); | |
2900 | return (-1); | |
2901 | } | |
2902 | ||
2903 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 || | |
9ae529ec | 2904 | !SPA_VERSION_IS_SUPPORTED(version) || |
34dc7c2f BB |
2905 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 || |
2906 | guid != vd->vdev_guid || | |
2907 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) { | |
2908 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
2909 | VDEV_AUX_CORRUPT_DATA); | |
2910 | nvlist_free(label); | |
2911 | return (-1); | |
2912 | } | |
2913 | ||
2914 | /* | |
2915 | * We don't actually check the pool state here. If it's in fact in | |
2916 | * use by another pool, we update this fact on the fly when requested. | |
2917 | */ | |
2918 | nvlist_free(label); | |
2919 | return (0); | |
2920 | } | |
2921 | ||
a1d477c2 MA |
2922 | /* |
2923 | * Free the objects used to store this vdev's spacemaps, and the array | |
2924 | * that points to them. | |
2925 | */ | |
428870ff | 2926 | void |
a1d477c2 MA |
2927 | vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx) |
2928 | { | |
2929 | if (vd->vdev_ms_array == 0) | |
2930 | return; | |
2931 | ||
2932 | objset_t *mos = vd->vdev_spa->spa_meta_objset; | |
2933 | uint64_t array_count = vd->vdev_asize >> vd->vdev_ms_shift; | |
2934 | size_t array_bytes = array_count * sizeof (uint64_t); | |
2935 | uint64_t *smobj_array = kmem_alloc(array_bytes, KM_SLEEP); | |
2936 | VERIFY0(dmu_read(mos, vd->vdev_ms_array, 0, | |
2937 | array_bytes, smobj_array, 0)); | |
2938 | ||
2939 | for (uint64_t i = 0; i < array_count; i++) { | |
2940 | uint64_t smobj = smobj_array[i]; | |
2941 | if (smobj == 0) | |
2942 | continue; | |
2943 | ||
2944 | space_map_free_obj(mos, smobj, tx); | |
2945 | } | |
2946 | ||
2947 | kmem_free(smobj_array, array_bytes); | |
2948 | VERIFY0(dmu_object_free(mos, vd->vdev_ms_array, tx)); | |
2949 | vd->vdev_ms_array = 0; | |
2950 | } | |
2951 | ||
2952 | static void | |
2953 | vdev_remove_empty(vdev_t *vd, uint64_t txg) | |
428870ff BB |
2954 | { |
2955 | spa_t *spa = vd->vdev_spa; | |
428870ff BB |
2956 | dmu_tx_t *tx; |
2957 | ||
e0ab3ab5 JS |
2958 | ASSERT(vd == vd->vdev_top); |
2959 | ASSERT3U(txg, ==, spa_syncing_txg(spa)); | |
428870ff | 2960 | |
428870ff | 2961 | if (vd->vdev_ms != NULL) { |
f3a7f661 GW |
2962 | metaslab_group_t *mg = vd->vdev_mg; |
2963 | ||
2964 | metaslab_group_histogram_verify(mg); | |
2965 | metaslab_class_histogram_verify(mg->mg_class); | |
2966 | ||
1c27024e | 2967 | for (int m = 0; m < vd->vdev_ms_count; m++) { |
428870ff BB |
2968 | metaslab_t *msp = vd->vdev_ms[m]; |
2969 | ||
93cf2076 | 2970 | if (msp == NULL || msp->ms_sm == NULL) |
428870ff BB |
2971 | continue; |
2972 | ||
93cf2076 | 2973 | mutex_enter(&msp->ms_lock); |
f3a7f661 GW |
2974 | /* |
2975 | * If the metaslab was not loaded when the vdev | |
2976 | * was removed then the histogram accounting may | |
2977 | * not be accurate. Update the histogram information | |
2978 | * here so that we ensure that the metaslab group | |
2979 | * and metaslab class are up-to-date. | |
2980 | */ | |
2981 | metaslab_group_histogram_remove(mg, msp); | |
2982 | ||
93cf2076 | 2983 | VERIFY0(space_map_allocated(msp->ms_sm)); |
93cf2076 GW |
2984 | space_map_close(msp->ms_sm); |
2985 | msp->ms_sm = NULL; | |
2986 | mutex_exit(&msp->ms_lock); | |
428870ff | 2987 | } |
f3a7f661 | 2988 | |
d2734cce SD |
2989 | if (vd->vdev_checkpoint_sm != NULL) { |
2990 | ASSERT(spa_has_checkpoint(spa)); | |
2991 | space_map_close(vd->vdev_checkpoint_sm); | |
2992 | vd->vdev_checkpoint_sm = NULL; | |
2993 | } | |
2994 | ||
f3a7f661 GW |
2995 | metaslab_group_histogram_verify(mg); |
2996 | metaslab_class_histogram_verify(mg->mg_class); | |
1c27024e | 2997 | for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) |
f3a7f661 | 2998 | ASSERT0(mg->mg_histogram[i]); |
428870ff BB |
2999 | } |
3000 | ||
a1d477c2 MA |
3001 | tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg); |
3002 | vdev_destroy_spacemaps(vd, tx); | |
e0ab3ab5 JS |
3003 | |
3004 | if (vd->vdev_islog && vd->vdev_top_zap != 0) { | |
3005 | vdev_destroy_unlink_zap(vd, vd->vdev_top_zap, tx); | |
3006 | vd->vdev_top_zap = 0; | |
3007 | } | |
428870ff BB |
3008 | dmu_tx_commit(tx); |
3009 | } | |
3010 | ||
34dc7c2f BB |
3011 | void |
3012 | vdev_sync_done(vdev_t *vd, uint64_t txg) | |
3013 | { | |
3014 | metaslab_t *msp; | |
428870ff BB |
3015 | boolean_t reassess = !txg_list_empty(&vd->vdev_ms_list, TXG_CLEAN(txg)); |
3016 | ||
a1d477c2 | 3017 | ASSERT(vdev_is_concrete(vd)); |
34dc7c2f | 3018 | |
c65aa5b2 | 3019 | while ((msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg)))) |
34dc7c2f | 3020 | metaslab_sync_done(msp, txg); |
428870ff BB |
3021 | |
3022 | if (reassess) | |
3023 | metaslab_sync_reassess(vd->vdev_mg); | |
34dc7c2f BB |
3024 | } |
3025 | ||
3026 | void | |
3027 | vdev_sync(vdev_t *vd, uint64_t txg) | |
3028 | { | |
3029 | spa_t *spa = vd->vdev_spa; | |
3030 | vdev_t *lvd; | |
3031 | metaslab_t *msp; | |
3032 | dmu_tx_t *tx; | |
3033 | ||
a1d477c2 MA |
3034 | if (range_tree_space(vd->vdev_obsolete_segments) > 0) { |
3035 | dmu_tx_t *tx; | |
428870ff | 3036 | |
a1d477c2 MA |
3037 | ASSERT(vd->vdev_removing || |
3038 | vd->vdev_ops == &vdev_indirect_ops); | |
3039 | ||
3040 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
3041 | vdev_indirect_sync_obsolete(vd, tx); | |
3042 | dmu_tx_commit(tx); | |
3043 | ||
3044 | /* | |
3045 | * If the vdev is indirect, it can't have dirty | |
3046 | * metaslabs or DTLs. | |
3047 | */ | |
3048 | if (vd->vdev_ops == &vdev_indirect_ops) { | |
3049 | ASSERT(txg_list_empty(&vd->vdev_ms_list, txg)); | |
3050 | ASSERT(txg_list_empty(&vd->vdev_dtl_list, txg)); | |
3051 | return; | |
3052 | } | |
3053 | } | |
3054 | ||
3055 | ASSERT(vdev_is_concrete(vd)); | |
3056 | ||
3057 | if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0 && | |
3058 | !vd->vdev_removing) { | |
34dc7c2f | 3059 | ASSERT(vd == vd->vdev_top); |
a1d477c2 | 3060 | ASSERT0(vd->vdev_indirect_config.vic_mapping_object); |
34dc7c2f BB |
3061 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); |
3062 | vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset, | |
3063 | DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx); | |
3064 | ASSERT(vd->vdev_ms_array != 0); | |
3065 | vdev_config_dirty(vd); | |
3066 | dmu_tx_commit(tx); | |
3067 | } | |
3068 | ||
3069 | while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) { | |
3070 | metaslab_sync(msp, txg); | |
3071 | (void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg)); | |
3072 | } | |
3073 | ||
3074 | while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL) | |
3075 | vdev_dtl_sync(lvd, txg); | |
3076 | ||
a1d477c2 MA |
3077 | /* |
3078 | * Remove the metadata associated with this vdev once it's empty. | |
3079 | * Note that this is typically used for log/cache device removal; | |
3080 | * we don't empty toplevel vdevs when removing them. But if | |
3081 | * a toplevel happens to be emptied, this is not harmful. | |
3082 | */ | |
3083 | if (vd->vdev_stat.vs_alloc == 0 && vd->vdev_removing) { | |
3084 | vdev_remove_empty(vd, txg); | |
3085 | } | |
3086 | ||
34dc7c2f BB |
3087 | (void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg)); |
3088 | } | |
3089 | ||
3090 | uint64_t | |
3091 | vdev_psize_to_asize(vdev_t *vd, uint64_t psize) | |
3092 | { | |
3093 | return (vd->vdev_ops->vdev_op_asize(vd, psize)); | |
3094 | } | |
3095 | ||
34dc7c2f BB |
3096 | /* |
3097 | * Mark the given vdev faulted. A faulted vdev behaves as if the device could | |
3098 | * not be opened, and no I/O is attempted. | |
3099 | */ | |
3100 | int | |
428870ff | 3101 | vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux) |
34dc7c2f | 3102 | { |
572e2857 | 3103 | vdev_t *vd, *tvd; |
34dc7c2f | 3104 | |
428870ff | 3105 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 3106 | |
b128c09f BB |
3107 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
3108 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f | 3109 | |
34dc7c2f | 3110 | if (!vd->vdev_ops->vdev_op_leaf) |
b128c09f | 3111 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 3112 | |
572e2857 BB |
3113 | tvd = vd->vdev_top; |
3114 | ||
4a283c7f TH |
3115 | /* |
3116 | * If user did a 'zpool offline -f' then make the fault persist across | |
3117 | * reboots. | |
3118 | */ | |
3119 | if (aux == VDEV_AUX_EXTERNAL_PERSIST) { | |
3120 | /* | |
3121 | * There are two kinds of forced faults: temporary and | |
3122 | * persistent. Temporary faults go away at pool import, while | |
3123 | * persistent faults stay set. Both types of faults can be | |
3124 | * cleared with a zpool clear. | |
3125 | * | |
3126 | * We tell if a vdev is persistently faulted by looking at the | |
3127 | * ZPOOL_CONFIG_AUX_STATE nvpair. If it's set to "external" at | |
3128 | * import then it's a persistent fault. Otherwise, it's | |
3129 | * temporary. We get ZPOOL_CONFIG_AUX_STATE set to "external" | |
3130 | * by setting vd.vdev_stat.vs_aux to VDEV_AUX_EXTERNAL. This | |
3131 | * tells vdev_config_generate() (which gets run later) to set | |
3132 | * ZPOOL_CONFIG_AUX_STATE to "external" in the nvlist. | |
3133 | */ | |
3134 | vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL; | |
3135 | vd->vdev_tmpoffline = B_FALSE; | |
3136 | aux = VDEV_AUX_EXTERNAL; | |
3137 | } else { | |
3138 | vd->vdev_tmpoffline = B_TRUE; | |
3139 | } | |
3140 | ||
428870ff BB |
3141 | /* |
3142 | * We don't directly use the aux state here, but if we do a | |
3143 | * vdev_reopen(), we need this value to be present to remember why we | |
3144 | * were faulted. | |
3145 | */ | |
3146 | vd->vdev_label_aux = aux; | |
3147 | ||
34dc7c2f BB |
3148 | /* |
3149 | * Faulted state takes precedence over degraded. | |
3150 | */ | |
428870ff | 3151 | vd->vdev_delayed_close = B_FALSE; |
34dc7c2f BB |
3152 | vd->vdev_faulted = 1ULL; |
3153 | vd->vdev_degraded = 0ULL; | |
428870ff | 3154 | vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, aux); |
34dc7c2f BB |
3155 | |
3156 | /* | |
428870ff BB |
3157 | * If this device has the only valid copy of the data, then |
3158 | * back off and simply mark the vdev as degraded instead. | |
34dc7c2f | 3159 | */ |
572e2857 | 3160 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && vdev_dtl_required(vd)) { |
34dc7c2f BB |
3161 | vd->vdev_degraded = 1ULL; |
3162 | vd->vdev_faulted = 0ULL; | |
3163 | ||
3164 | /* | |
3165 | * If we reopen the device and it's not dead, only then do we | |
3166 | * mark it degraded. | |
3167 | */ | |
572e2857 | 3168 | vdev_reopen(tvd); |
34dc7c2f | 3169 | |
428870ff BB |
3170 | if (vdev_readable(vd)) |
3171 | vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, aux); | |
34dc7c2f BB |
3172 | } |
3173 | ||
b128c09f | 3174 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
3175 | } |
3176 | ||
3177 | /* | |
3178 | * Mark the given vdev degraded. A degraded vdev is purely an indication to the | |
3179 | * user that something is wrong. The vdev continues to operate as normal as far | |
3180 | * as I/O is concerned. | |
3181 | */ | |
3182 | int | |
428870ff | 3183 | vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux) |
34dc7c2f | 3184 | { |
b128c09f | 3185 | vdev_t *vd; |
34dc7c2f | 3186 | |
428870ff | 3187 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 3188 | |
b128c09f BB |
3189 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
3190 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f | 3191 | |
34dc7c2f | 3192 | if (!vd->vdev_ops->vdev_op_leaf) |
b128c09f | 3193 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f BB |
3194 | |
3195 | /* | |
3196 | * If the vdev is already faulted, then don't do anything. | |
3197 | */ | |
b128c09f BB |
3198 | if (vd->vdev_faulted || vd->vdev_degraded) |
3199 | return (spa_vdev_state_exit(spa, NULL, 0)); | |
34dc7c2f BB |
3200 | |
3201 | vd->vdev_degraded = 1ULL; | |
3202 | if (!vdev_is_dead(vd)) | |
3203 | vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, | |
428870ff | 3204 | aux); |
34dc7c2f | 3205 | |
b128c09f | 3206 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
3207 | } |
3208 | ||
3209 | /* | |
d3cc8b15 WA |
3210 | * Online the given vdev. |
3211 | * | |
3212 | * If 'ZFS_ONLINE_UNSPARE' is set, it implies two things. First, any attached | |
3213 | * spare device should be detached when the device finishes resilvering. | |
3214 | * Second, the online should be treated like a 'test' online case, so no FMA | |
3215 | * events are generated if the device fails to open. | |
34dc7c2f BB |
3216 | */ |
3217 | int | |
b128c09f | 3218 | vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate) |
34dc7c2f | 3219 | { |
9babb374 | 3220 | vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev; |
153b2285 YP |
3221 | boolean_t wasoffline; |
3222 | vdev_state_t oldstate; | |
34dc7c2f | 3223 | |
428870ff | 3224 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 3225 | |
b128c09f BB |
3226 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
3227 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f BB |
3228 | |
3229 | if (!vd->vdev_ops->vdev_op_leaf) | |
b128c09f | 3230 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 3231 | |
153b2285 YP |
3232 | wasoffline = (vd->vdev_offline || vd->vdev_tmpoffline); |
3233 | oldstate = vd->vdev_state; | |
fb390aaf | 3234 | |
9babb374 | 3235 | tvd = vd->vdev_top; |
34dc7c2f BB |
3236 | vd->vdev_offline = B_FALSE; |
3237 | vd->vdev_tmpoffline = B_FALSE; | |
b128c09f BB |
3238 | vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE); |
3239 | vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT); | |
9babb374 BB |
3240 | |
3241 | /* XXX - L2ARC 1.0 does not support expansion */ | |
3242 | if (!vd->vdev_aux) { | |
3243 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) | |
3244 | pvd->vdev_expanding = !!(flags & ZFS_ONLINE_EXPAND); | |
3245 | } | |
3246 | ||
3247 | vdev_reopen(tvd); | |
34dc7c2f BB |
3248 | vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE; |
3249 | ||
9babb374 BB |
3250 | if (!vd->vdev_aux) { |
3251 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) | |
3252 | pvd->vdev_expanding = B_FALSE; | |
3253 | } | |
3254 | ||
34dc7c2f BB |
3255 | if (newstate) |
3256 | *newstate = vd->vdev_state; | |
3257 | if ((flags & ZFS_ONLINE_UNSPARE) && | |
3258 | !vdev_is_dead(vd) && vd->vdev_parent && | |
3259 | vd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3260 | vd->vdev_parent->vdev_child[0] == vd) | |
3261 | vd->vdev_unspare = B_TRUE; | |
3262 | ||
9babb374 BB |
3263 | if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) { |
3264 | ||
3265 | /* XXX - L2ARC 1.0 does not support expansion */ | |
3266 | if (vd->vdev_aux) | |
3267 | return (spa_vdev_state_exit(spa, vd, ENOTSUP)); | |
3268 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
3269 | } | |
fb390aaf | 3270 | |
153b2285 YP |
3271 | if (wasoffline || |
3272 | (oldstate < VDEV_STATE_DEGRADED && | |
3273 | vd->vdev_state >= VDEV_STATE_DEGRADED)) | |
12fa0466 | 3274 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_ONLINE); |
fb390aaf | 3275 | |
fb5f0bc8 | 3276 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
3277 | } |
3278 | ||
428870ff BB |
3279 | static int |
3280 | vdev_offline_locked(spa_t *spa, uint64_t guid, uint64_t flags) | |
34dc7c2f | 3281 | { |
9babb374 | 3282 | vdev_t *vd, *tvd; |
428870ff BB |
3283 | int error = 0; |
3284 | uint64_t generation; | |
3285 | metaslab_group_t *mg; | |
34dc7c2f | 3286 | |
428870ff BB |
3287 | top: |
3288 | spa_vdev_state_enter(spa, SCL_ALLOC); | |
34dc7c2f | 3289 | |
b128c09f BB |
3290 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
3291 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f BB |
3292 | |
3293 | if (!vd->vdev_ops->vdev_op_leaf) | |
b128c09f | 3294 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 3295 | |
9babb374 | 3296 | tvd = vd->vdev_top; |
428870ff BB |
3297 | mg = tvd->vdev_mg; |
3298 | generation = spa->spa_config_generation + 1; | |
9babb374 | 3299 | |
34dc7c2f BB |
3300 | /* |
3301 | * If the device isn't already offline, try to offline it. | |
3302 | */ | |
3303 | if (!vd->vdev_offline) { | |
3304 | /* | |
fb5f0bc8 | 3305 | * If this device has the only valid copy of some data, |
9babb374 BB |
3306 | * don't allow it to be offlined. Log devices are always |
3307 | * expendable. | |
34dc7c2f | 3308 | */ |
9babb374 BB |
3309 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && |
3310 | vdev_dtl_required(vd)) | |
b128c09f | 3311 | return (spa_vdev_state_exit(spa, NULL, EBUSY)); |
34dc7c2f | 3312 | |
428870ff BB |
3313 | /* |
3314 | * If the top-level is a slog and it has had allocations | |
3315 | * then proceed. We check that the vdev's metaslab group | |
3316 | * is not NULL since it's possible that we may have just | |
3317 | * added this vdev but not yet initialized its metaslabs. | |
3318 | */ | |
3319 | if (tvd->vdev_islog && mg != NULL) { | |
3320 | /* | |
3321 | * Prevent any future allocations. | |
3322 | */ | |
3323 | metaslab_group_passivate(mg); | |
3324 | (void) spa_vdev_state_exit(spa, vd, 0); | |
3325 | ||
a1d477c2 | 3326 | error = spa_reset_logs(spa); |
428870ff | 3327 | |
d2734cce SD |
3328 | /* |
3329 | * If the log device was successfully reset but has | |
3330 | * checkpointed data, do not offline it. | |
3331 | */ | |
3332 | if (error == 0 && | |
3333 | tvd->vdev_checkpoint_sm != NULL) { | |
3334 | ASSERT3U(tvd->vdev_checkpoint_sm->sm_alloc, | |
3335 | !=, 0); | |
3336 | error = ZFS_ERR_CHECKPOINT_EXISTS; | |
3337 | } | |
3338 | ||
428870ff BB |
3339 | spa_vdev_state_enter(spa, SCL_ALLOC); |
3340 | ||
3341 | /* | |
3342 | * Check to see if the config has changed. | |
3343 | */ | |
3344 | if (error || generation != spa->spa_config_generation) { | |
3345 | metaslab_group_activate(mg); | |
3346 | if (error) | |
3347 | return (spa_vdev_state_exit(spa, | |
3348 | vd, error)); | |
3349 | (void) spa_vdev_state_exit(spa, vd, 0); | |
3350 | goto top; | |
3351 | } | |
c99c9001 | 3352 | ASSERT0(tvd->vdev_stat.vs_alloc); |
428870ff BB |
3353 | } |
3354 | ||
34dc7c2f BB |
3355 | /* |
3356 | * Offline this device and reopen its top-level vdev. | |
9babb374 BB |
3357 | * If the top-level vdev is a log device then just offline |
3358 | * it. Otherwise, if this action results in the top-level | |
3359 | * vdev becoming unusable, undo it and fail the request. | |
34dc7c2f BB |
3360 | */ |
3361 | vd->vdev_offline = B_TRUE; | |
9babb374 BB |
3362 | vdev_reopen(tvd); |
3363 | ||
3364 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && | |
3365 | vdev_is_dead(tvd)) { | |
34dc7c2f | 3366 | vd->vdev_offline = B_FALSE; |
9babb374 | 3367 | vdev_reopen(tvd); |
b128c09f | 3368 | return (spa_vdev_state_exit(spa, NULL, EBUSY)); |
34dc7c2f | 3369 | } |
428870ff BB |
3370 | |
3371 | /* | |
3372 | * Add the device back into the metaslab rotor so that | |
3373 | * once we online the device it's open for business. | |
3374 | */ | |
3375 | if (tvd->vdev_islog && mg != NULL) | |
3376 | metaslab_group_activate(mg); | |
34dc7c2f BB |
3377 | } |
3378 | ||
b128c09f | 3379 | vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY); |
34dc7c2f | 3380 | |
428870ff BB |
3381 | return (spa_vdev_state_exit(spa, vd, 0)); |
3382 | } | |
9babb374 | 3383 | |
428870ff BB |
3384 | int |
3385 | vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags) | |
3386 | { | |
3387 | int error; | |
9babb374 | 3388 | |
428870ff BB |
3389 | mutex_enter(&spa->spa_vdev_top_lock); |
3390 | error = vdev_offline_locked(spa, guid, flags); | |
3391 | mutex_exit(&spa->spa_vdev_top_lock); | |
3392 | ||
3393 | return (error); | |
34dc7c2f BB |
3394 | } |
3395 | ||
3396 | /* | |
3397 | * Clear the error counts associated with this vdev. Unlike vdev_online() and | |
3398 | * vdev_offline(), we assume the spa config is locked. We also clear all | |
3399 | * children. If 'vd' is NULL, then the user wants to clear all vdevs. | |
34dc7c2f BB |
3400 | */ |
3401 | void | |
b128c09f | 3402 | vdev_clear(spa_t *spa, vdev_t *vd) |
34dc7c2f | 3403 | { |
b128c09f BB |
3404 | vdev_t *rvd = spa->spa_root_vdev; |
3405 | ||
3406 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
34dc7c2f BB |
3407 | |
3408 | if (vd == NULL) | |
b128c09f | 3409 | vd = rvd; |
34dc7c2f BB |
3410 | |
3411 | vd->vdev_stat.vs_read_errors = 0; | |
3412 | vd->vdev_stat.vs_write_errors = 0; | |
3413 | vd->vdev_stat.vs_checksum_errors = 0; | |
34dc7c2f | 3414 | |
1c27024e | 3415 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f | 3416 | vdev_clear(spa, vd->vdev_child[c]); |
34dc7c2f | 3417 | |
a1d477c2 MA |
3418 | /* |
3419 | * It makes no sense to "clear" an indirect vdev. | |
3420 | */ | |
3421 | if (!vdev_is_concrete(vd)) | |
3422 | return; | |
3423 | ||
34dc7c2f | 3424 | /* |
b128c09f BB |
3425 | * If we're in the FAULTED state or have experienced failed I/O, then |
3426 | * clear the persistent state and attempt to reopen the device. We | |
3427 | * also mark the vdev config dirty, so that the new faulted state is | |
3428 | * written out to disk. | |
34dc7c2f | 3429 | */ |
b128c09f BB |
3430 | if (vd->vdev_faulted || vd->vdev_degraded || |
3431 | !vdev_readable(vd) || !vdev_writeable(vd)) { | |
428870ff | 3432 | /* |
4e33ba4c | 3433 | * When reopening in response to a clear event, it may be due to |
428870ff BB |
3434 | * a fmadm repair request. In this case, if the device is |
3435 | * still broken, we want to still post the ereport again. | |
3436 | */ | |
3437 | vd->vdev_forcefault = B_TRUE; | |
3438 | ||
572e2857 | 3439 | vd->vdev_faulted = vd->vdev_degraded = 0ULL; |
b128c09f BB |
3440 | vd->vdev_cant_read = B_FALSE; |
3441 | vd->vdev_cant_write = B_FALSE; | |
4a283c7f | 3442 | vd->vdev_stat.vs_aux = 0; |
b128c09f | 3443 | |
572e2857 | 3444 | vdev_reopen(vd == rvd ? rvd : vd->vdev_top); |
34dc7c2f | 3445 | |
428870ff BB |
3446 | vd->vdev_forcefault = B_FALSE; |
3447 | ||
572e2857 | 3448 | if (vd != rvd && vdev_writeable(vd->vdev_top)) |
b128c09f BB |
3449 | vdev_state_dirty(vd->vdev_top); |
3450 | ||
3451 | if (vd->vdev_aux == NULL && !vdev_is_dead(vd)) | |
34dc7c2f BB |
3452 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
3453 | ||
12fa0466 | 3454 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_CLEAR); |
34dc7c2f | 3455 | } |
428870ff BB |
3456 | |
3457 | /* | |
3458 | * When clearing a FMA-diagnosed fault, we always want to | |
3459 | * unspare the device, as we assume that the original spare was | |
3460 | * done in response to the FMA fault. | |
3461 | */ | |
3462 | if (!vdev_is_dead(vd) && vd->vdev_parent != NULL && | |
3463 | vd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3464 | vd->vdev_parent->vdev_child[0] == vd) | |
3465 | vd->vdev_unspare = B_TRUE; | |
34dc7c2f BB |
3466 | } |
3467 | ||
b128c09f BB |
3468 | boolean_t |
3469 | vdev_is_dead(vdev_t *vd) | |
3470 | { | |
428870ff BB |
3471 | /* |
3472 | * Holes and missing devices are always considered "dead". | |
3473 | * This simplifies the code since we don't have to check for | |
3474 | * these types of devices in the various code paths. | |
3475 | * Instead we rely on the fact that we skip over dead devices | |
3476 | * before issuing I/O to them. | |
3477 | */ | |
a1d477c2 MA |
3478 | return (vd->vdev_state < VDEV_STATE_DEGRADED || |
3479 | vd->vdev_ops == &vdev_hole_ops || | |
428870ff | 3480 | vd->vdev_ops == &vdev_missing_ops); |
b128c09f BB |
3481 | } |
3482 | ||
3483 | boolean_t | |
34dc7c2f BB |
3484 | vdev_readable(vdev_t *vd) |
3485 | { | |
b128c09f | 3486 | return (!vdev_is_dead(vd) && !vd->vdev_cant_read); |
34dc7c2f BB |
3487 | } |
3488 | ||
b128c09f | 3489 | boolean_t |
34dc7c2f BB |
3490 | vdev_writeable(vdev_t *vd) |
3491 | { | |
a1d477c2 MA |
3492 | return (!vdev_is_dead(vd) && !vd->vdev_cant_write && |
3493 | vdev_is_concrete(vd)); | |
34dc7c2f BB |
3494 | } |
3495 | ||
b128c09f BB |
3496 | boolean_t |
3497 | vdev_allocatable(vdev_t *vd) | |
34dc7c2f | 3498 | { |
fb5f0bc8 BB |
3499 | uint64_t state = vd->vdev_state; |
3500 | ||
b128c09f | 3501 | /* |
fb5f0bc8 | 3502 | * We currently allow allocations from vdevs which may be in the |
b128c09f BB |
3503 | * process of reopening (i.e. VDEV_STATE_CLOSED). If the device |
3504 | * fails to reopen then we'll catch it later when we're holding | |
fb5f0bc8 BB |
3505 | * the proper locks. Note that we have to get the vdev state |
3506 | * in a local variable because although it changes atomically, | |
3507 | * we're asking two separate questions about it. | |
b128c09f | 3508 | */ |
fb5f0bc8 | 3509 | return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) && |
a1d477c2 | 3510 | !vd->vdev_cant_write && vdev_is_concrete(vd) && |
3dfb57a3 | 3511 | vd->vdev_mg->mg_initialized); |
34dc7c2f BB |
3512 | } |
3513 | ||
b128c09f BB |
3514 | boolean_t |
3515 | vdev_accessible(vdev_t *vd, zio_t *zio) | |
34dc7c2f | 3516 | { |
b128c09f | 3517 | ASSERT(zio->io_vd == vd); |
34dc7c2f | 3518 | |
b128c09f BB |
3519 | if (vdev_is_dead(vd) || vd->vdev_remove_wanted) |
3520 | return (B_FALSE); | |
34dc7c2f | 3521 | |
b128c09f BB |
3522 | if (zio->io_type == ZIO_TYPE_READ) |
3523 | return (!vd->vdev_cant_read); | |
34dc7c2f | 3524 | |
b128c09f BB |
3525 | if (zio->io_type == ZIO_TYPE_WRITE) |
3526 | return (!vd->vdev_cant_write); | |
34dc7c2f | 3527 | |
b128c09f | 3528 | return (B_TRUE); |
34dc7c2f BB |
3529 | } |
3530 | ||
193a37cb TH |
3531 | static void |
3532 | vdev_get_child_stat(vdev_t *cvd, vdev_stat_t *vs, vdev_stat_t *cvs) | |
34dc7c2f | 3533 | { |
193a37cb TH |
3534 | int t; |
3535 | for (t = 0; t < ZIO_TYPES; t++) { | |
3536 | vs->vs_ops[t] += cvs->vs_ops[t]; | |
3537 | vs->vs_bytes[t] += cvs->vs_bytes[t]; | |
3538 | } | |
34dc7c2f | 3539 | |
193a37cb TH |
3540 | cvs->vs_scan_removing = cvd->vdev_removing; |
3541 | } | |
f3a7f661 | 3542 | |
193a37cb TH |
3543 | /* |
3544 | * Get extended stats | |
3545 | */ | |
3546 | static void | |
3547 | vdev_get_child_stat_ex(vdev_t *cvd, vdev_stat_ex_t *vsx, vdev_stat_ex_t *cvsx) | |
3548 | { | |
3549 | int t, b; | |
3550 | for (t = 0; t < ZIO_TYPES; t++) { | |
7e945072 | 3551 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_disk_histo[0]); b++) |
193a37cb | 3552 | vsx->vsx_disk_histo[t][b] += cvsx->vsx_disk_histo[t][b]; |
7e945072 TH |
3553 | |
3554 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_total_histo[0]); b++) { | |
193a37cb TH |
3555 | vsx->vsx_total_histo[t][b] += |
3556 | cvsx->vsx_total_histo[t][b]; | |
3557 | } | |
f38dfec3 | 3558 | } |
34dc7c2f | 3559 | |
193a37cb | 3560 | for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) { |
7e945072 | 3561 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_queue_histo[0]); b++) { |
193a37cb TH |
3562 | vsx->vsx_queue_histo[t][b] += |
3563 | cvsx->vsx_queue_histo[t][b]; | |
3564 | } | |
3565 | vsx->vsx_active_queue[t] += cvsx->vsx_active_queue[t]; | |
3566 | vsx->vsx_pend_queue[t] += cvsx->vsx_pend_queue[t]; | |
7e945072 TH |
3567 | |
3568 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_ind_histo[0]); b++) | |
3569 | vsx->vsx_ind_histo[t][b] += cvsx->vsx_ind_histo[t][b]; | |
3570 | ||
3571 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_agg_histo[0]); b++) | |
3572 | vsx->vsx_agg_histo[t][b] += cvsx->vsx_agg_histo[t][b]; | |
193a37cb | 3573 | } |
7e945072 | 3574 | |
193a37cb TH |
3575 | } |
3576 | ||
d2734cce SD |
3577 | boolean_t |
3578 | vdev_is_spacemap_addressable(vdev_t *vd) | |
3579 | { | |
3580 | /* | |
3581 | * Assuming 47 bits of the space map entry dedicated for the entry's | |
3582 | * offset (see description in space_map.h), we calculate the maximum | |
3583 | * address that can be described by a space map entry for the given | |
3584 | * device. | |
3585 | */ | |
3586 | uint64_t shift = vd->vdev_ashift + 47; | |
3587 | ||
3588 | if (shift >= 63) /* detect potential overflow */ | |
3589 | return (B_TRUE); | |
3590 | ||
3591 | return (vd->vdev_asize < (1ULL << shift)); | |
3592 | } | |
3593 | ||
193a37cb TH |
3594 | /* |
3595 | * Get statistics for the given vdev. | |
3596 | */ | |
3597 | static void | |
3598 | vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) | |
3599 | { | |
1c27024e | 3600 | int t; |
34dc7c2f BB |
3601 | /* |
3602 | * If we're getting stats on the root vdev, aggregate the I/O counts | |
3603 | * over all top-level vdevs (i.e. the direct children of the root). | |
3604 | */ | |
193a37cb TH |
3605 | if (!vd->vdev_ops->vdev_op_leaf) { |
3606 | if (vs) { | |
3607 | memset(vs->vs_ops, 0, sizeof (vs->vs_ops)); | |
3608 | memset(vs->vs_bytes, 0, sizeof (vs->vs_bytes)); | |
3609 | } | |
3610 | if (vsx) | |
3611 | memset(vsx, 0, sizeof (*vsx)); | |
3612 | ||
1c27024e | 3613 | for (int c = 0; c < vd->vdev_children; c++) { |
193a37cb | 3614 | vdev_t *cvd = vd->vdev_child[c]; |
34dc7c2f | 3615 | vdev_stat_t *cvs = &cvd->vdev_stat; |
193a37cb TH |
3616 | vdev_stat_ex_t *cvsx = &cvd->vdev_stat_ex; |
3617 | ||
3618 | vdev_get_stats_ex_impl(cvd, cvs, cvsx); | |
3619 | if (vs) | |
3620 | vdev_get_child_stat(cvd, vs, cvs); | |
3621 | if (vsx) | |
3622 | vdev_get_child_stat_ex(cvd, vsx, cvsx); | |
34dc7c2f | 3623 | |
193a37cb TH |
3624 | } |
3625 | } else { | |
3626 | /* | |
3627 | * We're a leaf. Just copy our ZIO active queue stats in. The | |
3628 | * other leaf stats are updated in vdev_stat_update(). | |
3629 | */ | |
3630 | if (!vsx) | |
3631 | return; | |
3632 | ||
3633 | memcpy(vsx, &vd->vdev_stat_ex, sizeof (vd->vdev_stat_ex)); | |
3634 | ||
3635 | for (t = 0; t < ARRAY_SIZE(vd->vdev_queue.vq_class); t++) { | |
3636 | vsx->vsx_active_queue[t] = | |
3637 | vd->vdev_queue.vq_class[t].vqc_active; | |
3638 | vsx->vsx_pend_queue[t] = avl_numnodes( | |
3639 | &vd->vdev_queue.vq_class[t].vqc_queued_tree); | |
34dc7c2f BB |
3640 | } |
3641 | } | |
193a37cb TH |
3642 | } |
3643 | ||
3644 | void | |
3645 | vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) | |
3646 | { | |
0f676dc2 | 3647 | vdev_t *tvd = vd->vdev_top; |
193a37cb TH |
3648 | mutex_enter(&vd->vdev_stat_lock); |
3649 | if (vs) { | |
3650 | bcopy(&vd->vdev_stat, vs, sizeof (*vs)); | |
3651 | vs->vs_timestamp = gethrtime() - vs->vs_timestamp; | |
3652 | vs->vs_state = vd->vdev_state; | |
3653 | vs->vs_rsize = vdev_get_min_asize(vd); | |
3654 | if (vd->vdev_ops->vdev_op_leaf) | |
3655 | vs->vs_rsize += VDEV_LABEL_START_SIZE + | |
3656 | VDEV_LABEL_END_SIZE; | |
0f676dc2 GM |
3657 | /* |
3658 | * Report expandable space on top-level, non-auxillary devices | |
3659 | * only. The expandable space is reported in terms of metaslab | |
3660 | * sized units since that determines how much space the pool | |
3661 | * can expand. | |
3662 | */ | |
3663 | if (vd->vdev_aux == NULL && tvd != NULL) { | |
3664 | vs->vs_esize = P2ALIGN( | |
3665 | vd->vdev_max_asize - vd->vdev_asize, | |
3666 | 1ULL << tvd->vdev_ms_shift); | |
3667 | } | |
193a37cb | 3668 | if (vd->vdev_aux == NULL && vd == vd->vdev_top && |
a1d477c2 | 3669 | vdev_is_concrete(vd)) { |
193a37cb TH |
3670 | vs->vs_fragmentation = vd->vdev_mg->mg_fragmentation; |
3671 | } | |
3672 | } | |
3673 | ||
3674 | ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_READER) != 0); | |
3675 | vdev_get_stats_ex_impl(vd, vs, vsx); | |
f3a7f661 | 3676 | mutex_exit(&vd->vdev_stat_lock); |
34dc7c2f BB |
3677 | } |
3678 | ||
193a37cb TH |
3679 | void |
3680 | vdev_get_stats(vdev_t *vd, vdev_stat_t *vs) | |
3681 | { | |
3682 | return (vdev_get_stats_ex(vd, vs, NULL)); | |
3683 | } | |
3684 | ||
34dc7c2f BB |
3685 | void |
3686 | vdev_clear_stats(vdev_t *vd) | |
3687 | { | |
3688 | mutex_enter(&vd->vdev_stat_lock); | |
3689 | vd->vdev_stat.vs_space = 0; | |
3690 | vd->vdev_stat.vs_dspace = 0; | |
3691 | vd->vdev_stat.vs_alloc = 0; | |
3692 | mutex_exit(&vd->vdev_stat_lock); | |
3693 | } | |
3694 | ||
428870ff BB |
3695 | void |
3696 | vdev_scan_stat_init(vdev_t *vd) | |
3697 | { | |
3698 | vdev_stat_t *vs = &vd->vdev_stat; | |
3699 | ||
1c27024e | 3700 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
3701 | vdev_scan_stat_init(vd->vdev_child[c]); |
3702 | ||
3703 | mutex_enter(&vd->vdev_stat_lock); | |
3704 | vs->vs_scan_processed = 0; | |
3705 | mutex_exit(&vd->vdev_stat_lock); | |
3706 | } | |
3707 | ||
34dc7c2f | 3708 | void |
b128c09f | 3709 | vdev_stat_update(zio_t *zio, uint64_t psize) |
34dc7c2f | 3710 | { |
fb5f0bc8 BB |
3711 | spa_t *spa = zio->io_spa; |
3712 | vdev_t *rvd = spa->spa_root_vdev; | |
b128c09f | 3713 | vdev_t *vd = zio->io_vd ? zio->io_vd : rvd; |
34dc7c2f BB |
3714 | vdev_t *pvd; |
3715 | uint64_t txg = zio->io_txg; | |
3716 | vdev_stat_t *vs = &vd->vdev_stat; | |
193a37cb | 3717 | vdev_stat_ex_t *vsx = &vd->vdev_stat_ex; |
34dc7c2f BB |
3718 | zio_type_t type = zio->io_type; |
3719 | int flags = zio->io_flags; | |
3720 | ||
b128c09f BB |
3721 | /* |
3722 | * If this i/o is a gang leader, it didn't do any actual work. | |
3723 | */ | |
3724 | if (zio->io_gang_tree) | |
3725 | return; | |
3726 | ||
34dc7c2f | 3727 | if (zio->io_error == 0) { |
b128c09f BB |
3728 | /* |
3729 | * If this is a root i/o, don't count it -- we've already | |
3730 | * counted the top-level vdevs, and vdev_get_stats() will | |
3731 | * aggregate them when asked. This reduces contention on | |
3732 | * the root vdev_stat_lock and implicitly handles blocks | |
3733 | * that compress away to holes, for which there is no i/o. | |
3734 | * (Holes never create vdev children, so all the counters | |
3735 | * remain zero, which is what we want.) | |
3736 | * | |
3737 | * Note: this only applies to successful i/o (io_error == 0) | |
3738 | * because unlike i/o counts, errors are not additive. | |
3739 | * When reading a ditto block, for example, failure of | |
3740 | * one top-level vdev does not imply a root-level error. | |
3741 | */ | |
3742 | if (vd == rvd) | |
3743 | return; | |
3744 | ||
3745 | ASSERT(vd == zio->io_vd); | |
fb5f0bc8 BB |
3746 | |
3747 | if (flags & ZIO_FLAG_IO_BYPASS) | |
3748 | return; | |
3749 | ||
3750 | mutex_enter(&vd->vdev_stat_lock); | |
3751 | ||
b128c09f | 3752 | if (flags & ZIO_FLAG_IO_REPAIR) { |
572e2857 | 3753 | if (flags & ZIO_FLAG_SCAN_THREAD) { |
428870ff BB |
3754 | dsl_scan_phys_t *scn_phys = |
3755 | &spa->spa_dsl_pool->dp_scan->scn_phys; | |
3756 | uint64_t *processed = &scn_phys->scn_processed; | |
3757 | ||
3758 | /* XXX cleanup? */ | |
3759 | if (vd->vdev_ops->vdev_op_leaf) | |
3760 | atomic_add_64(processed, psize); | |
3761 | vs->vs_scan_processed += psize; | |
3762 | } | |
3763 | ||
fb5f0bc8 | 3764 | if (flags & ZIO_FLAG_SELF_HEAL) |
b128c09f | 3765 | vs->vs_self_healed += psize; |
34dc7c2f | 3766 | } |
fb5f0bc8 | 3767 | |
193a37cb TH |
3768 | /* |
3769 | * The bytes/ops/histograms are recorded at the leaf level and | |
3770 | * aggregated into the higher level vdevs in vdev_get_stats(). | |
3771 | */ | |
4eb0db42 TH |
3772 | if (vd->vdev_ops->vdev_op_leaf && |
3773 | (zio->io_priority < ZIO_PRIORITY_NUM_QUEUEABLE)) { | |
193a37cb TH |
3774 | |
3775 | vs->vs_ops[type]++; | |
3776 | vs->vs_bytes[type] += psize; | |
3777 | ||
7e945072 TH |
3778 | if (flags & ZIO_FLAG_DELEGATED) { |
3779 | vsx->vsx_agg_histo[zio->io_priority] | |
3780 | [RQ_HISTO(zio->io_size)]++; | |
3781 | } else { | |
3782 | vsx->vsx_ind_histo[zio->io_priority] | |
3783 | [RQ_HISTO(zio->io_size)]++; | |
3784 | } | |
3785 | ||
193a37cb TH |
3786 | if (zio->io_delta && zio->io_delay) { |
3787 | vsx->vsx_queue_histo[zio->io_priority] | |
7e945072 | 3788 | [L_HISTO(zio->io_delta - zio->io_delay)]++; |
193a37cb | 3789 | vsx->vsx_disk_histo[type] |
7e945072 | 3790 | [L_HISTO(zio->io_delay)]++; |
193a37cb | 3791 | vsx->vsx_total_histo[type] |
7e945072 | 3792 | [L_HISTO(zio->io_delta)]++; |
193a37cb TH |
3793 | } |
3794 | } | |
fb5f0bc8 BB |
3795 | |
3796 | mutex_exit(&vd->vdev_stat_lock); | |
34dc7c2f BB |
3797 | return; |
3798 | } | |
3799 | ||
3800 | if (flags & ZIO_FLAG_SPECULATIVE) | |
3801 | return; | |
3802 | ||
9babb374 BB |
3803 | /* |
3804 | * If this is an I/O error that is going to be retried, then ignore the | |
3805 | * error. Otherwise, the user may interpret B_FAILFAST I/O errors as | |
3806 | * hard errors, when in reality they can happen for any number of | |
3807 | * innocuous reasons (bus resets, MPxIO link failure, etc). | |
3808 | */ | |
3809 | if (zio->io_error == EIO && | |
3810 | !(zio->io_flags & ZIO_FLAG_IO_RETRY)) | |
3811 | return; | |
3812 | ||
428870ff BB |
3813 | /* |
3814 | * Intent logs writes won't propagate their error to the root | |
3815 | * I/O so don't mark these types of failures as pool-level | |
3816 | * errors. | |
3817 | */ | |
3818 | if (zio->io_vd == NULL && (zio->io_flags & ZIO_FLAG_DONT_PROPAGATE)) | |
3819 | return; | |
3820 | ||
b128c09f | 3821 | mutex_enter(&vd->vdev_stat_lock); |
9babb374 | 3822 | if (type == ZIO_TYPE_READ && !vdev_is_dead(vd)) { |
b128c09f BB |
3823 | if (zio->io_error == ECKSUM) |
3824 | vs->vs_checksum_errors++; | |
3825 | else | |
3826 | vs->vs_read_errors++; | |
34dc7c2f | 3827 | } |
9babb374 | 3828 | if (type == ZIO_TYPE_WRITE && !vdev_is_dead(vd)) |
b128c09f BB |
3829 | vs->vs_write_errors++; |
3830 | mutex_exit(&vd->vdev_stat_lock); | |
34dc7c2f | 3831 | |
a1d477c2 MA |
3832 | if (spa->spa_load_state == SPA_LOAD_NONE && |
3833 | type == ZIO_TYPE_WRITE && txg != 0 && | |
fb5f0bc8 | 3834 | (!(flags & ZIO_FLAG_IO_REPAIR) || |
572e2857 | 3835 | (flags & ZIO_FLAG_SCAN_THREAD) || |
428870ff | 3836 | spa->spa_claiming)) { |
fb5f0bc8 | 3837 | /* |
428870ff BB |
3838 | * This is either a normal write (not a repair), or it's |
3839 | * a repair induced by the scrub thread, or it's a repair | |
3840 | * made by zil_claim() during spa_load() in the first txg. | |
3841 | * In the normal case, we commit the DTL change in the same | |
3842 | * txg as the block was born. In the scrub-induced repair | |
3843 | * case, we know that scrubs run in first-pass syncing context, | |
3844 | * so we commit the DTL change in spa_syncing_txg(spa). | |
3845 | * In the zil_claim() case, we commit in spa_first_txg(spa). | |
fb5f0bc8 BB |
3846 | * |
3847 | * We currently do not make DTL entries for failed spontaneous | |
3848 | * self-healing writes triggered by normal (non-scrubbing) | |
3849 | * reads, because we have no transactional context in which to | |
3850 | * do so -- and it's not clear that it'd be desirable anyway. | |
3851 | */ | |
3852 | if (vd->vdev_ops->vdev_op_leaf) { | |
3853 | uint64_t commit_txg = txg; | |
572e2857 | 3854 | if (flags & ZIO_FLAG_SCAN_THREAD) { |
fb5f0bc8 BB |
3855 | ASSERT(flags & ZIO_FLAG_IO_REPAIR); |
3856 | ASSERT(spa_sync_pass(spa) == 1); | |
3857 | vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1); | |
428870ff BB |
3858 | commit_txg = spa_syncing_txg(spa); |
3859 | } else if (spa->spa_claiming) { | |
3860 | ASSERT(flags & ZIO_FLAG_IO_REPAIR); | |
3861 | commit_txg = spa_first_txg(spa); | |
fb5f0bc8 | 3862 | } |
428870ff | 3863 | ASSERT(commit_txg >= spa_syncing_txg(spa)); |
fb5f0bc8 | 3864 | if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1)) |
34dc7c2f | 3865 | return; |
fb5f0bc8 BB |
3866 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) |
3867 | vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1); | |
3868 | vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg); | |
34dc7c2f | 3869 | } |
fb5f0bc8 BB |
3870 | if (vd != rvd) |
3871 | vdev_dtl_dirty(vd, DTL_MISSING, txg, 1); | |
34dc7c2f BB |
3872 | } |
3873 | } | |
3874 | ||
34dc7c2f | 3875 | /* |
428870ff BB |
3876 | * Update the in-core space usage stats for this vdev, its metaslab class, |
3877 | * and the root vdev. | |
34dc7c2f BB |
3878 | */ |
3879 | void | |
428870ff BB |
3880 | vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta, |
3881 | int64_t space_delta) | |
34dc7c2f BB |
3882 | { |
3883 | int64_t dspace_delta = space_delta; | |
3884 | spa_t *spa = vd->vdev_spa; | |
3885 | vdev_t *rvd = spa->spa_root_vdev; | |
428870ff BB |
3886 | metaslab_group_t *mg = vd->vdev_mg; |
3887 | metaslab_class_t *mc = mg ? mg->mg_class : NULL; | |
34dc7c2f BB |
3888 | |
3889 | ASSERT(vd == vd->vdev_top); | |
3890 | ||
3891 | /* | |
3892 | * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion | |
3893 | * factor. We must calculate this here and not at the root vdev | |
3894 | * because the root vdev's psize-to-asize is simply the max of its | |
3895 | * childrens', thus not accurate enough for us. | |
3896 | */ | |
3897 | ASSERT((dspace_delta & (SPA_MINBLOCKSIZE-1)) == 0); | |
9babb374 | 3898 | ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache); |
34dc7c2f BB |
3899 | dspace_delta = (dspace_delta >> SPA_MINBLOCKSHIFT) * |
3900 | vd->vdev_deflate_ratio; | |
3901 | ||
3902 | mutex_enter(&vd->vdev_stat_lock); | |
34dc7c2f | 3903 | vd->vdev_stat.vs_alloc += alloc_delta; |
428870ff | 3904 | vd->vdev_stat.vs_space += space_delta; |
34dc7c2f BB |
3905 | vd->vdev_stat.vs_dspace += dspace_delta; |
3906 | mutex_exit(&vd->vdev_stat_lock); | |
3907 | ||
428870ff | 3908 | if (mc == spa_normal_class(spa)) { |
34dc7c2f | 3909 | mutex_enter(&rvd->vdev_stat_lock); |
34dc7c2f | 3910 | rvd->vdev_stat.vs_alloc += alloc_delta; |
428870ff | 3911 | rvd->vdev_stat.vs_space += space_delta; |
34dc7c2f BB |
3912 | rvd->vdev_stat.vs_dspace += dspace_delta; |
3913 | mutex_exit(&rvd->vdev_stat_lock); | |
3914 | } | |
428870ff BB |
3915 | |
3916 | if (mc != NULL) { | |
3917 | ASSERT(rvd == vd->vdev_parent); | |
3918 | ASSERT(vd->vdev_ms_count != 0); | |
3919 | ||
3920 | metaslab_class_space_update(mc, | |
3921 | alloc_delta, defer_delta, space_delta, dspace_delta); | |
3922 | } | |
34dc7c2f BB |
3923 | } |
3924 | ||
3925 | /* | |
3926 | * Mark a top-level vdev's config as dirty, placing it on the dirty list | |
3927 | * so that it will be written out next time the vdev configuration is synced. | |
3928 | * If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs. | |
3929 | */ | |
3930 | void | |
3931 | vdev_config_dirty(vdev_t *vd) | |
3932 | { | |
3933 | spa_t *spa = vd->vdev_spa; | |
3934 | vdev_t *rvd = spa->spa_root_vdev; | |
3935 | int c; | |
3936 | ||
572e2857 BB |
3937 | ASSERT(spa_writeable(spa)); |
3938 | ||
34dc7c2f | 3939 | /* |
9babb374 BB |
3940 | * If this is an aux vdev (as with l2cache and spare devices), then we |
3941 | * update the vdev config manually and set the sync flag. | |
b128c09f BB |
3942 | */ |
3943 | if (vd->vdev_aux != NULL) { | |
3944 | spa_aux_vdev_t *sav = vd->vdev_aux; | |
3945 | nvlist_t **aux; | |
3946 | uint_t naux; | |
3947 | ||
3948 | for (c = 0; c < sav->sav_count; c++) { | |
3949 | if (sav->sav_vdevs[c] == vd) | |
3950 | break; | |
3951 | } | |
3952 | ||
3953 | if (c == sav->sav_count) { | |
3954 | /* | |
3955 | * We're being removed. There's nothing more to do. | |
3956 | */ | |
3957 | ASSERT(sav->sav_sync == B_TRUE); | |
3958 | return; | |
3959 | } | |
3960 | ||
3961 | sav->sav_sync = B_TRUE; | |
3962 | ||
9babb374 BB |
3963 | if (nvlist_lookup_nvlist_array(sav->sav_config, |
3964 | ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) { | |
3965 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
3966 | ZPOOL_CONFIG_SPARES, &aux, &naux) == 0); | |
3967 | } | |
b128c09f BB |
3968 | |
3969 | ASSERT(c < naux); | |
3970 | ||
3971 | /* | |
3972 | * Setting the nvlist in the middle if the array is a little | |
3973 | * sketchy, but it will work. | |
3974 | */ | |
3975 | nvlist_free(aux[c]); | |
428870ff | 3976 | aux[c] = vdev_config_generate(spa, vd, B_TRUE, 0); |
b128c09f BB |
3977 | |
3978 | return; | |
3979 | } | |
3980 | ||
3981 | /* | |
3982 | * The dirty list is protected by the SCL_CONFIG lock. The caller | |
3983 | * must either hold SCL_CONFIG as writer, or must be the sync thread | |
3984 | * (which holds SCL_CONFIG as reader). There's only one sync thread, | |
34dc7c2f BB |
3985 | * so this is sufficient to ensure mutual exclusion. |
3986 | */ | |
b128c09f BB |
3987 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || |
3988 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
3989 | spa_config_held(spa, SCL_CONFIG, RW_READER))); | |
34dc7c2f BB |
3990 | |
3991 | if (vd == rvd) { | |
3992 | for (c = 0; c < rvd->vdev_children; c++) | |
3993 | vdev_config_dirty(rvd->vdev_child[c]); | |
3994 | } else { | |
3995 | ASSERT(vd == vd->vdev_top); | |
3996 | ||
428870ff | 3997 | if (!list_link_active(&vd->vdev_config_dirty_node) && |
a1d477c2 | 3998 | vdev_is_concrete(vd)) { |
b128c09f | 3999 | list_insert_head(&spa->spa_config_dirty_list, vd); |
a1d477c2 | 4000 | } |
34dc7c2f BB |
4001 | } |
4002 | } | |
4003 | ||
4004 | void | |
4005 | vdev_config_clean(vdev_t *vd) | |
4006 | { | |
4007 | spa_t *spa = vd->vdev_spa; | |
4008 | ||
b128c09f BB |
4009 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || |
4010 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4011 | spa_config_held(spa, SCL_CONFIG, RW_READER))); | |
34dc7c2f | 4012 | |
b128c09f BB |
4013 | ASSERT(list_link_active(&vd->vdev_config_dirty_node)); |
4014 | list_remove(&spa->spa_config_dirty_list, vd); | |
34dc7c2f BB |
4015 | } |
4016 | ||
b128c09f BB |
4017 | /* |
4018 | * Mark a top-level vdev's state as dirty, so that the next pass of | |
4019 | * spa_sync() can convert this into vdev_config_dirty(). We distinguish | |
4020 | * the state changes from larger config changes because they require | |
4021 | * much less locking, and are often needed for administrative actions. | |
4022 | */ | |
4023 | void | |
4024 | vdev_state_dirty(vdev_t *vd) | |
4025 | { | |
4026 | spa_t *spa = vd->vdev_spa; | |
4027 | ||
572e2857 | 4028 | ASSERT(spa_writeable(spa)); |
b128c09f BB |
4029 | ASSERT(vd == vd->vdev_top); |
4030 | ||
4031 | /* | |
4032 | * The state list is protected by the SCL_STATE lock. The caller | |
4033 | * must either hold SCL_STATE as writer, or must be the sync thread | |
4034 | * (which holds SCL_STATE as reader). There's only one sync thread, | |
4035 | * so this is sufficient to ensure mutual exclusion. | |
4036 | */ | |
4037 | ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || | |
4038 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4039 | spa_config_held(spa, SCL_STATE, RW_READER))); | |
4040 | ||
a1d477c2 MA |
4041 | if (!list_link_active(&vd->vdev_state_dirty_node) && |
4042 | vdev_is_concrete(vd)) | |
b128c09f BB |
4043 | list_insert_head(&spa->spa_state_dirty_list, vd); |
4044 | } | |
4045 | ||
4046 | void | |
4047 | vdev_state_clean(vdev_t *vd) | |
4048 | { | |
4049 | spa_t *spa = vd->vdev_spa; | |
4050 | ||
4051 | ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || | |
4052 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4053 | spa_config_held(spa, SCL_STATE, RW_READER))); | |
4054 | ||
4055 | ASSERT(list_link_active(&vd->vdev_state_dirty_node)); | |
4056 | list_remove(&spa->spa_state_dirty_list, vd); | |
4057 | } | |
4058 | ||
4059 | /* | |
4060 | * Propagate vdev state up from children to parent. | |
4061 | */ | |
34dc7c2f BB |
4062 | void |
4063 | vdev_propagate_state(vdev_t *vd) | |
4064 | { | |
fb5f0bc8 BB |
4065 | spa_t *spa = vd->vdev_spa; |
4066 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f BB |
4067 | int degraded = 0, faulted = 0; |
4068 | int corrupted = 0; | |
34dc7c2f BB |
4069 | vdev_t *child; |
4070 | ||
4071 | if (vd->vdev_children > 0) { | |
1c27024e | 4072 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f | 4073 | child = vd->vdev_child[c]; |
b128c09f | 4074 | |
428870ff | 4075 | /* |
a1d477c2 MA |
4076 | * Don't factor holes or indirect vdevs into the |
4077 | * decision. | |
428870ff | 4078 | */ |
a1d477c2 | 4079 | if (!vdev_is_concrete(child)) |
428870ff BB |
4080 | continue; |
4081 | ||
b128c09f | 4082 | if (!vdev_readable(child) || |
fb5f0bc8 | 4083 | (!vdev_writeable(child) && spa_writeable(spa))) { |
b128c09f BB |
4084 | /* |
4085 | * Root special: if there is a top-level log | |
4086 | * device, treat the root vdev as if it were | |
4087 | * degraded. | |
4088 | */ | |
4089 | if (child->vdev_islog && vd == rvd) | |
4090 | degraded++; | |
4091 | else | |
4092 | faulted++; | |
4093 | } else if (child->vdev_state <= VDEV_STATE_DEGRADED) { | |
34dc7c2f | 4094 | degraded++; |
b128c09f | 4095 | } |
34dc7c2f BB |
4096 | |
4097 | if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA) | |
4098 | corrupted++; | |
4099 | } | |
4100 | ||
4101 | vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded); | |
4102 | ||
4103 | /* | |
b128c09f | 4104 | * Root special: if there is a top-level vdev that cannot be |
34dc7c2f BB |
4105 | * opened due to corrupted metadata, then propagate the root |
4106 | * vdev's aux state as 'corrupt' rather than 'insufficient | |
4107 | * replicas'. | |
4108 | */ | |
4109 | if (corrupted && vd == rvd && | |
4110 | rvd->vdev_state == VDEV_STATE_CANT_OPEN) | |
4111 | vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
4112 | VDEV_AUX_CORRUPT_DATA); | |
4113 | } | |
4114 | ||
b128c09f | 4115 | if (vd->vdev_parent) |
34dc7c2f BB |
4116 | vdev_propagate_state(vd->vdev_parent); |
4117 | } | |
4118 | ||
4119 | /* | |
4120 | * Set a vdev's state. If this is during an open, we don't update the parent | |
4121 | * state, because we're in the process of opening children depth-first. | |
4122 | * Otherwise, we propagate the change to the parent. | |
4123 | * | |
4124 | * If this routine places a device in a faulted state, an appropriate ereport is | |
4125 | * generated. | |
4126 | */ | |
4127 | void | |
4128 | vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux) | |
4129 | { | |
4130 | uint64_t save_state; | |
b128c09f | 4131 | spa_t *spa = vd->vdev_spa; |
34dc7c2f BB |
4132 | |
4133 | if (state == vd->vdev_state) { | |
976246fa DB |
4134 | /* |
4135 | * Since vdev_offline() code path is already in an offline | |
4136 | * state we can miss a statechange event to OFFLINE. Check | |
4137 | * the previous state to catch this condition. | |
4138 | */ | |
4139 | if (vd->vdev_ops->vdev_op_leaf && | |
4140 | (state == VDEV_STATE_OFFLINE) && | |
4141 | (vd->vdev_prevstate >= VDEV_STATE_FAULTED)) { | |
4142 | /* post an offline state change */ | |
4143 | zfs_post_state_change(spa, vd, vd->vdev_prevstate); | |
4144 | } | |
34dc7c2f BB |
4145 | vd->vdev_stat.vs_aux = aux; |
4146 | return; | |
4147 | } | |
4148 | ||
4149 | save_state = vd->vdev_state; | |
4150 | ||
4151 | vd->vdev_state = state; | |
4152 | vd->vdev_stat.vs_aux = aux; | |
4153 | ||
4154 | /* | |
4155 | * If we are setting the vdev state to anything but an open state, then | |
428870ff BB |
4156 | * always close the underlying device unless the device has requested |
4157 | * a delayed close (i.e. we're about to remove or fault the device). | |
4158 | * Otherwise, we keep accessible but invalid devices open forever. | |
4159 | * We don't call vdev_close() itself, because that implies some extra | |
4160 | * checks (offline, etc) that we don't want here. This is limited to | |
4161 | * leaf devices, because otherwise closing the device will affect other | |
4162 | * children. | |
34dc7c2f | 4163 | */ |
428870ff BB |
4164 | if (!vd->vdev_delayed_close && vdev_is_dead(vd) && |
4165 | vd->vdev_ops->vdev_op_leaf) | |
34dc7c2f BB |
4166 | vd->vdev_ops->vdev_op_close(vd); |
4167 | ||
4168 | if (vd->vdev_removed && | |
4169 | state == VDEV_STATE_CANT_OPEN && | |
4170 | (aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) { | |
4171 | /* | |
4172 | * If the previous state is set to VDEV_STATE_REMOVED, then this | |
4173 | * device was previously marked removed and someone attempted to | |
4174 | * reopen it. If this failed due to a nonexistent device, then | |
4175 | * keep the device in the REMOVED state. We also let this be if | |
4176 | * it is one of our special test online cases, which is only | |
4177 | * attempting to online the device and shouldn't generate an FMA | |
4178 | * fault. | |
4179 | */ | |
4180 | vd->vdev_state = VDEV_STATE_REMOVED; | |
4181 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; | |
4182 | } else if (state == VDEV_STATE_REMOVED) { | |
34dc7c2f BB |
4183 | vd->vdev_removed = B_TRUE; |
4184 | } else if (state == VDEV_STATE_CANT_OPEN) { | |
4185 | /* | |
572e2857 BB |
4186 | * If we fail to open a vdev during an import or recovery, we |
4187 | * mark it as "not available", which signifies that it was | |
4188 | * never there to begin with. Failure to open such a device | |
4189 | * is not considered an error. | |
34dc7c2f | 4190 | */ |
572e2857 BB |
4191 | if ((spa_load_state(spa) == SPA_LOAD_IMPORT || |
4192 | spa_load_state(spa) == SPA_LOAD_RECOVER) && | |
34dc7c2f BB |
4193 | vd->vdev_ops->vdev_op_leaf) |
4194 | vd->vdev_not_present = 1; | |
4195 | ||
4196 | /* | |
4197 | * Post the appropriate ereport. If the 'prevstate' field is | |
4198 | * set to something other than VDEV_STATE_UNKNOWN, it indicates | |
4199 | * that this is part of a vdev_reopen(). In this case, we don't | |
4200 | * want to post the ereport if the device was already in the | |
4201 | * CANT_OPEN state beforehand. | |
4202 | * | |
4203 | * If the 'checkremove' flag is set, then this is an attempt to | |
4204 | * online the device in response to an insertion event. If we | |
4205 | * hit this case, then we have detected an insertion event for a | |
4206 | * faulted or offline device that wasn't in the removed state. | |
4207 | * In this scenario, we don't post an ereport because we are | |
4208 | * about to replace the device, or attempt an online with | |
4209 | * vdev_forcefault, which will generate the fault for us. | |
4210 | */ | |
4211 | if ((vd->vdev_prevstate != state || vd->vdev_forcefault) && | |
4212 | !vd->vdev_not_present && !vd->vdev_checkremove && | |
b128c09f | 4213 | vd != spa->spa_root_vdev) { |
34dc7c2f BB |
4214 | const char *class; |
4215 | ||
4216 | switch (aux) { | |
4217 | case VDEV_AUX_OPEN_FAILED: | |
4218 | class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED; | |
4219 | break; | |
4220 | case VDEV_AUX_CORRUPT_DATA: | |
4221 | class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA; | |
4222 | break; | |
4223 | case VDEV_AUX_NO_REPLICAS: | |
4224 | class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS; | |
4225 | break; | |
4226 | case VDEV_AUX_BAD_GUID_SUM: | |
4227 | class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM; | |
4228 | break; | |
4229 | case VDEV_AUX_TOO_SMALL: | |
4230 | class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL; | |
4231 | break; | |
4232 | case VDEV_AUX_BAD_LABEL: | |
4233 | class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL; | |
4234 | break; | |
ff61d1a4 | 4235 | case VDEV_AUX_BAD_ASHIFT: |
4236 | class = FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT; | |
4237 | break; | |
34dc7c2f BB |
4238 | default: |
4239 | class = FM_EREPORT_ZFS_DEVICE_UNKNOWN; | |
4240 | } | |
4241 | ||
b5256303 TC |
4242 | zfs_ereport_post(class, spa, vd, NULL, NULL, |
4243 | save_state, 0); | |
34dc7c2f BB |
4244 | } |
4245 | ||
4246 | /* Erase any notion of persistent removed state */ | |
4247 | vd->vdev_removed = B_FALSE; | |
4248 | } else { | |
4249 | vd->vdev_removed = B_FALSE; | |
4250 | } | |
4251 | ||
d02ca379 DB |
4252 | /* |
4253 | * Notify ZED of any significant state-change on a leaf vdev. | |
4254 | * | |
d02ca379 | 4255 | */ |
6078881a TH |
4256 | if (vd->vdev_ops->vdev_op_leaf) { |
4257 | /* preserve original state from a vdev_reopen() */ | |
4258 | if ((vd->vdev_prevstate != VDEV_STATE_UNKNOWN) && | |
4259 | (vd->vdev_prevstate != vd->vdev_state) && | |
4260 | (save_state <= VDEV_STATE_CLOSED)) | |
4261 | save_state = vd->vdev_prevstate; | |
4262 | ||
4263 | /* filter out state change due to initial vdev_open */ | |
4264 | if (save_state > VDEV_STATE_CLOSED) | |
4265 | zfs_post_state_change(spa, vd, save_state); | |
d02ca379 DB |
4266 | } |
4267 | ||
9babb374 BB |
4268 | if (!isopen && vd->vdev_parent) |
4269 | vdev_propagate_state(vd->vdev_parent); | |
34dc7c2f | 4270 | } |
b128c09f | 4271 | |
6cb8e530 PZ |
4272 | boolean_t |
4273 | vdev_children_are_offline(vdev_t *vd) | |
4274 | { | |
4275 | ASSERT(!vd->vdev_ops->vdev_op_leaf); | |
4276 | ||
4277 | for (uint64_t i = 0; i < vd->vdev_children; i++) { | |
4278 | if (vd->vdev_child[i]->vdev_state != VDEV_STATE_OFFLINE) | |
4279 | return (B_FALSE); | |
4280 | } | |
4281 | ||
4282 | return (B_TRUE); | |
4283 | } | |
4284 | ||
b128c09f BB |
4285 | /* |
4286 | * Check the vdev configuration to ensure that it's capable of supporting | |
e550644f | 4287 | * a root pool. We do not support partial configuration. |
b128c09f BB |
4288 | */ |
4289 | boolean_t | |
4290 | vdev_is_bootable(vdev_t *vd) | |
4291 | { | |
b128c09f | 4292 | if (!vd->vdev_ops->vdev_op_leaf) { |
e550644f | 4293 | const char *vdev_type = vd->vdev_ops->vdev_op_type; |
b128c09f | 4294 | |
a1d477c2 MA |
4295 | if (strcmp(vdev_type, VDEV_TYPE_MISSING) == 0 || |
4296 | strcmp(vdev_type, VDEV_TYPE_INDIRECT) == 0) { | |
b128c09f | 4297 | return (B_FALSE); |
a1d477c2 | 4298 | } |
b128c09f BB |
4299 | } |
4300 | ||
e550644f | 4301 | for (int c = 0; c < vd->vdev_children; c++) { |
b128c09f BB |
4302 | if (!vdev_is_bootable(vd->vdev_child[c])) |
4303 | return (B_FALSE); | |
4304 | } | |
4305 | return (B_TRUE); | |
4306 | } | |
9babb374 | 4307 | |
a1d477c2 MA |
4308 | boolean_t |
4309 | vdev_is_concrete(vdev_t *vd) | |
4310 | { | |
4311 | vdev_ops_t *ops = vd->vdev_ops; | |
4312 | if (ops == &vdev_indirect_ops || ops == &vdev_hole_ops || | |
4313 | ops == &vdev_missing_ops || ops == &vdev_root_ops) { | |
4314 | return (B_FALSE); | |
4315 | } else { | |
4316 | return (B_TRUE); | |
4317 | } | |
4318 | } | |
4319 | ||
572e2857 BB |
4320 | /* |
4321 | * Determine if a log device has valid content. If the vdev was | |
4322 | * removed or faulted in the MOS config then we know that | |
4323 | * the content on the log device has already been written to the pool. | |
4324 | */ | |
4325 | boolean_t | |
4326 | vdev_log_state_valid(vdev_t *vd) | |
4327 | { | |
4328 | if (vd->vdev_ops->vdev_op_leaf && !vd->vdev_faulted && | |
4329 | !vd->vdev_removed) | |
4330 | return (B_TRUE); | |
4331 | ||
1c27024e | 4332 | for (int c = 0; c < vd->vdev_children; c++) |
572e2857 BB |
4333 | if (vdev_log_state_valid(vd->vdev_child[c])) |
4334 | return (B_TRUE); | |
4335 | ||
4336 | return (B_FALSE); | |
4337 | } | |
4338 | ||
9babb374 BB |
4339 | /* |
4340 | * Expand a vdev if possible. | |
4341 | */ | |
4342 | void | |
4343 | vdev_expand(vdev_t *vd, uint64_t txg) | |
4344 | { | |
4345 | ASSERT(vd->vdev_top == vd); | |
4346 | ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); | |
7637ef8d | 4347 | ASSERT(vdev_is_concrete(vd)); |
9babb374 | 4348 | |
a1d477c2 MA |
4349 | vdev_set_deflate_ratio(vd); |
4350 | ||
7637ef8d | 4351 | if ((vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count) { |
9babb374 BB |
4352 | VERIFY(vdev_metaslab_init(vd, txg) == 0); |
4353 | vdev_config_dirty(vd); | |
4354 | } | |
4355 | } | |
428870ff BB |
4356 | |
4357 | /* | |
4358 | * Split a vdev. | |
4359 | */ | |
4360 | void | |
4361 | vdev_split(vdev_t *vd) | |
4362 | { | |
4363 | vdev_t *cvd, *pvd = vd->vdev_parent; | |
4364 | ||
4365 | vdev_remove_child(pvd, vd); | |
4366 | vdev_compact_children(pvd); | |
4367 | ||
4368 | cvd = pvd->vdev_child[0]; | |
4369 | if (pvd->vdev_children == 1) { | |
4370 | vdev_remove_parent(cvd); | |
4371 | cvd->vdev_splitting = B_TRUE; | |
4372 | } | |
4373 | vdev_propagate_state(cvd); | |
4374 | } | |
c28b2279 | 4375 | |
cc92e9d0 | 4376 | void |
8fb1ede1 | 4377 | vdev_deadman(vdev_t *vd, char *tag) |
cc92e9d0 | 4378 | { |
1c27024e | 4379 | for (int c = 0; c < vd->vdev_children; c++) { |
cc92e9d0 GW |
4380 | vdev_t *cvd = vd->vdev_child[c]; |
4381 | ||
8fb1ede1 | 4382 | vdev_deadman(cvd, tag); |
cc92e9d0 GW |
4383 | } |
4384 | ||
4385 | if (vd->vdev_ops->vdev_op_leaf) { | |
4386 | vdev_queue_t *vq = &vd->vdev_queue; | |
4387 | ||
4388 | mutex_enter(&vq->vq_lock); | |
e8b96c60 | 4389 | if (avl_numnodes(&vq->vq_active_tree) > 0) { |
cc92e9d0 GW |
4390 | spa_t *spa = vd->vdev_spa; |
4391 | zio_t *fio; | |
4392 | uint64_t delta; | |
4393 | ||
8fb1ede1 BB |
4394 | zfs_dbgmsg("slow vdev: %s has %d active IOs", |
4395 | vd->vdev_path, avl_numnodes(&vq->vq_active_tree)); | |
4396 | ||
cc92e9d0 GW |
4397 | /* |
4398 | * Look at the head of all the pending queues, | |
4399 | * if any I/O has been outstanding for longer than | |
8fb1ede1 | 4400 | * the spa_deadman_synctime invoke the deadman logic. |
cc92e9d0 | 4401 | */ |
e8b96c60 | 4402 | fio = avl_first(&vq->vq_active_tree); |
cb682a17 | 4403 | delta = gethrtime() - fio->io_timestamp; |
8fb1ede1 BB |
4404 | if (delta > spa_deadman_synctime(spa)) |
4405 | zio_deadman(fio, tag); | |
cc92e9d0 GW |
4406 | } |
4407 | mutex_exit(&vq->vq_lock); | |
4408 | } | |
4409 | } | |
4410 | ||
93ce2b4c | 4411 | #if defined(_KERNEL) |
c28b2279 BB |
4412 | EXPORT_SYMBOL(vdev_fault); |
4413 | EXPORT_SYMBOL(vdev_degrade); | |
4414 | EXPORT_SYMBOL(vdev_online); | |
4415 | EXPORT_SYMBOL(vdev_offline); | |
4416 | EXPORT_SYMBOL(vdev_clear); | |
4ea3f864 | 4417 | /* BEGIN CSTYLED */ |
d2734cce SD |
4418 | module_param(vdev_max_ms_count, int, 0644); |
4419 | MODULE_PARM_DESC(vdev_max_ms_count, | |
e4e94ca3 | 4420 | "Target number of metaslabs per top-level vdev"); |
80d52c39 | 4421 | |
d2734cce SD |
4422 | module_param(vdev_min_ms_count, int, 0644); |
4423 | MODULE_PARM_DESC(vdev_min_ms_count, | |
4424 | "Minimum number of metaslabs per top-level vdev"); | |
4425 | ||
e4e94ca3 DB |
4426 | module_param(vdev_ms_count_limit, int, 0644); |
4427 | MODULE_PARM_DESC(vdev_ms_count_limit, | |
4428 | "Practical upper limit of total metaslabs per top-level vdev"); | |
4429 | ||
80d52c39 TH |
4430 | module_param(zfs_delays_per_second, uint, 0644); |
4431 | MODULE_PARM_DESC(zfs_delays_per_second, "Rate limit delay events to this many " | |
4432 | "IO delays per second"); | |
4433 | ||
4434 | module_param(zfs_checksums_per_second, uint, 0644); | |
4435 | MODULE_PARM_DESC(zfs_checksums_per_second, "Rate limit checksum events " | |
4436 | "to this many checksum errors per second (do not set below zed" | |
4437 | "threshold)."); | |
02638a30 TC |
4438 | |
4439 | module_param(zfs_scan_ignore_errors, int, 0644); | |
4440 | MODULE_PARM_DESC(zfs_scan_ignore_errors, | |
4441 | "Ignore errors during resilver/scrub"); | |
6cb8e530 PZ |
4442 | |
4443 | module_param(vdev_validate_skip, int, 0644); | |
4444 | MODULE_PARM_DESC(vdev_validate_skip, | |
4445 | "Bypass vdev_validate()"); | |
4ea3f864 | 4446 | /* END CSTYLED */ |
c28b2279 | 4447 | #endif |