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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. |
108a454a | 24 | * Copyright (c) 2011, 2020 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. |
cc99f275 | 29 | * Copyright (c) 2017, Intel Corporation. |
3c819a2c | 30 | * Copyright (c) 2019, Datto Inc. All rights reserved. |
34dc7c2f BB |
31 | */ |
32 | ||
34dc7c2f BB |
33 | #include <sys/zfs_context.h> |
34 | #include <sys/fm/fs/zfs.h> | |
35 | #include <sys/spa.h> | |
36 | #include <sys/spa_impl.h> | |
a1d477c2 | 37 | #include <sys/bpobj.h> |
34dc7c2f BB |
38 | #include <sys/dmu.h> |
39 | #include <sys/dmu_tx.h> | |
a1d477c2 | 40 | #include <sys/dsl_dir.h> |
34dc7c2f | 41 | #include <sys/vdev_impl.h> |
9a49d3f3 | 42 | #include <sys/vdev_rebuild.h> |
34dc7c2f BB |
43 | #include <sys/uberblock_impl.h> |
44 | #include <sys/metaslab.h> | |
45 | #include <sys/metaslab_impl.h> | |
46 | #include <sys/space_map.h> | |
93cf2076 | 47 | #include <sys/space_reftree.h> |
34dc7c2f BB |
48 | #include <sys/zio.h> |
49 | #include <sys/zap.h> | |
50 | #include <sys/fs/zfs.h> | |
b128c09f | 51 | #include <sys/arc.h> |
9babb374 | 52 | #include <sys/zil.h> |
428870ff | 53 | #include <sys/dsl_scan.h> |
a6255b7f | 54 | #include <sys/abd.h> |
619f0976 | 55 | #include <sys/vdev_initialize.h> |
1b939560 | 56 | #include <sys/vdev_trim.h> |
6c285672 | 57 | #include <sys/zvol.h> |
6078881a | 58 | #include <sys/zfs_ratelimit.h> |
34dc7c2f | 59 | |
c853f382 SD |
60 | /* default target for number of metaslabs per top-level vdev */ |
61 | int zfs_vdev_default_ms_count = 200; | |
d2734cce | 62 | |
e4e94ca3 | 63 | /* minimum number of metaslabs per top-level vdev */ |
c853f382 | 64 | int zfs_vdev_min_ms_count = 16; |
d2734cce | 65 | |
e4e94ca3 | 66 | /* practical upper limit of total metaslabs per top-level vdev */ |
c853f382 | 67 | int zfs_vdev_ms_count_limit = 1ULL << 17; |
e4e94ca3 DB |
68 | |
69 | /* lower limit for metaslab size (512M) */ | |
c853f382 | 70 | int zfs_vdev_default_ms_shift = 29; |
d2734cce | 71 | |
c853f382 SD |
72 | /* upper limit for metaslab size (16G) */ |
73 | int zfs_vdev_max_ms_shift = 34; | |
e4e94ca3 | 74 | |
d2734cce SD |
75 | int vdev_validate_skip = B_FALSE; |
76 | ||
b8bcca18 | 77 | /* |
d2734cce SD |
78 | * Since the DTL space map of a vdev is not expected to have a lot of |
79 | * entries, we default its block size to 4K. | |
b8bcca18 | 80 | */ |
93e28d66 | 81 | int zfs_vdev_dtl_sm_blksz = (1 << 12); |
b8bcca18 | 82 | |
80d52c39 | 83 | /* |
ad796b8a | 84 | * Rate limit slow IO (delay) events to this many per second. |
80d52c39 | 85 | */ |
ad796b8a | 86 | unsigned int zfs_slow_io_events_per_second = 20; |
80d52c39 TH |
87 | |
88 | /* | |
89 | * Rate limit checksum events after this many checksum errors per second. | |
90 | */ | |
ad796b8a | 91 | unsigned int zfs_checksum_events_per_second = 20; |
80d52c39 | 92 | |
02638a30 TC |
93 | /* |
94 | * Ignore errors during scrub/resilver. Allows to work around resilver | |
95 | * upon import when there are pool errors. | |
96 | */ | |
97 | int zfs_scan_ignore_errors = 0; | |
98 | ||
d2734cce SD |
99 | /* |
100 | * vdev-wide space maps that have lots of entries written to them at | |
101 | * the end of each transaction can benefit from a higher I/O bandwidth | |
102 | * (e.g. vdev_obsolete_sm), thus we default their block size to 128K. | |
103 | */ | |
93e28d66 | 104 | int zfs_vdev_standard_sm_blksz = (1 << 17); |
6cb8e530 | 105 | |
53b1f5ea PS |
106 | /* |
107 | * Tunable parameter for debugging or performance analysis. Setting this | |
108 | * will cause pool corruption on power loss if a volatile out-of-order | |
109 | * write cache is enabled. | |
110 | */ | |
111 | int zfs_nocacheflush = 0; | |
112 | ||
6fe3498c RM |
113 | uint64_t zfs_vdev_max_auto_ashift = ASHIFT_MAX; |
114 | uint64_t zfs_vdev_min_auto_ashift = ASHIFT_MIN; | |
115 | ||
4a0ee12a PZ |
116 | /*PRINTFLIKE2*/ |
117 | void | |
118 | vdev_dbgmsg(vdev_t *vd, const char *fmt, ...) | |
119 | { | |
120 | va_list adx; | |
121 | char buf[256]; | |
122 | ||
123 | va_start(adx, fmt); | |
124 | (void) vsnprintf(buf, sizeof (buf), fmt, adx); | |
125 | va_end(adx); | |
126 | ||
127 | if (vd->vdev_path != NULL) { | |
128 | zfs_dbgmsg("%s vdev '%s': %s", vd->vdev_ops->vdev_op_type, | |
129 | vd->vdev_path, buf); | |
130 | } else { | |
131 | zfs_dbgmsg("%s-%llu vdev (guid %llu): %s", | |
132 | vd->vdev_ops->vdev_op_type, | |
133 | (u_longlong_t)vd->vdev_id, | |
134 | (u_longlong_t)vd->vdev_guid, buf); | |
135 | } | |
136 | } | |
137 | ||
6cb8e530 PZ |
138 | void |
139 | vdev_dbgmsg_print_tree(vdev_t *vd, int indent) | |
140 | { | |
141 | char state[20]; | |
142 | ||
143 | if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) { | |
144 | zfs_dbgmsg("%*svdev %u: %s", indent, "", vd->vdev_id, | |
145 | vd->vdev_ops->vdev_op_type); | |
146 | return; | |
147 | } | |
148 | ||
149 | switch (vd->vdev_state) { | |
150 | case VDEV_STATE_UNKNOWN: | |
151 | (void) snprintf(state, sizeof (state), "unknown"); | |
152 | break; | |
153 | case VDEV_STATE_CLOSED: | |
154 | (void) snprintf(state, sizeof (state), "closed"); | |
155 | break; | |
156 | case VDEV_STATE_OFFLINE: | |
157 | (void) snprintf(state, sizeof (state), "offline"); | |
158 | break; | |
159 | case VDEV_STATE_REMOVED: | |
160 | (void) snprintf(state, sizeof (state), "removed"); | |
161 | break; | |
162 | case VDEV_STATE_CANT_OPEN: | |
163 | (void) snprintf(state, sizeof (state), "can't open"); | |
164 | break; | |
165 | case VDEV_STATE_FAULTED: | |
166 | (void) snprintf(state, sizeof (state), "faulted"); | |
167 | break; | |
168 | case VDEV_STATE_DEGRADED: | |
169 | (void) snprintf(state, sizeof (state), "degraded"); | |
170 | break; | |
171 | case VDEV_STATE_HEALTHY: | |
172 | (void) snprintf(state, sizeof (state), "healthy"); | |
173 | break; | |
174 | default: | |
175 | (void) snprintf(state, sizeof (state), "<state %u>", | |
176 | (uint_t)vd->vdev_state); | |
177 | } | |
178 | ||
179 | zfs_dbgmsg("%*svdev %u: %s%s, guid: %llu, path: %s, %s", indent, | |
e902ddb0 | 180 | "", (int)vd->vdev_id, vd->vdev_ops->vdev_op_type, |
6cb8e530 PZ |
181 | vd->vdev_islog ? " (log)" : "", |
182 | (u_longlong_t)vd->vdev_guid, | |
183 | vd->vdev_path ? vd->vdev_path : "N/A", state); | |
184 | ||
185 | for (uint64_t i = 0; i < vd->vdev_children; i++) | |
186 | vdev_dbgmsg_print_tree(vd->vdev_child[i], indent + 2); | |
187 | } | |
188 | ||
34dc7c2f BB |
189 | /* |
190 | * Virtual device management. | |
191 | */ | |
192 | ||
193 | static vdev_ops_t *vdev_ops_table[] = { | |
194 | &vdev_root_ops, | |
195 | &vdev_raidz_ops, | |
196 | &vdev_mirror_ops, | |
197 | &vdev_replacing_ops, | |
198 | &vdev_spare_ops, | |
199 | &vdev_disk_ops, | |
200 | &vdev_file_ops, | |
201 | &vdev_missing_ops, | |
428870ff | 202 | &vdev_hole_ops, |
a1d477c2 | 203 | &vdev_indirect_ops, |
34dc7c2f BB |
204 | NULL |
205 | }; | |
206 | ||
34dc7c2f BB |
207 | /* |
208 | * Given a vdev type, return the appropriate ops vector. | |
209 | */ | |
210 | static vdev_ops_t * | |
211 | vdev_getops(const char *type) | |
212 | { | |
213 | vdev_ops_t *ops, **opspp; | |
214 | ||
215 | for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++) | |
216 | if (strcmp(ops->vdev_op_type, type) == 0) | |
217 | break; | |
218 | ||
219 | return (ops); | |
220 | } | |
221 | ||
619f0976 GW |
222 | /* ARGSUSED */ |
223 | void | |
ca577779 | 224 | vdev_default_xlate(vdev_t *vd, const range_seg64_t *in, range_seg64_t *res) |
619f0976 GW |
225 | { |
226 | res->rs_start = in->rs_start; | |
227 | res->rs_end = in->rs_end; | |
228 | } | |
229 | ||
cc99f275 | 230 | /* |
e1cfd73f | 231 | * Derive the enumerated allocation bias from string input. |
cc99f275 DB |
232 | * String origin is either the per-vdev zap or zpool(1M). |
233 | */ | |
234 | static vdev_alloc_bias_t | |
235 | vdev_derive_alloc_bias(const char *bias) | |
236 | { | |
237 | vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE; | |
238 | ||
239 | if (strcmp(bias, VDEV_ALLOC_BIAS_LOG) == 0) | |
240 | alloc_bias = VDEV_BIAS_LOG; | |
241 | else if (strcmp(bias, VDEV_ALLOC_BIAS_SPECIAL) == 0) | |
242 | alloc_bias = VDEV_BIAS_SPECIAL; | |
243 | else if (strcmp(bias, VDEV_ALLOC_BIAS_DEDUP) == 0) | |
244 | alloc_bias = VDEV_BIAS_DEDUP; | |
245 | ||
246 | return (alloc_bias); | |
247 | } | |
248 | ||
34dc7c2f BB |
249 | /* |
250 | * Default asize function: return the MAX of psize with the asize of | |
251 | * all children. This is what's used by anything other than RAID-Z. | |
252 | */ | |
253 | uint64_t | |
254 | vdev_default_asize(vdev_t *vd, uint64_t psize) | |
255 | { | |
256 | uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift); | |
257 | uint64_t csize; | |
34dc7c2f | 258 | |
1c27024e | 259 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
260 | csize = vdev_psize_to_asize(vd->vdev_child[c], psize); |
261 | asize = MAX(asize, csize); | |
262 | } | |
263 | ||
264 | return (asize); | |
265 | } | |
266 | ||
267 | /* | |
9babb374 BB |
268 | * Get the minimum allocatable size. We define the allocatable size as |
269 | * the vdev's asize rounded to the nearest metaslab. This allows us to | |
270 | * replace or attach devices which don't have the same physical size but | |
271 | * can still satisfy the same number of allocations. | |
34dc7c2f BB |
272 | */ |
273 | uint64_t | |
9babb374 | 274 | vdev_get_min_asize(vdev_t *vd) |
34dc7c2f | 275 | { |
9babb374 | 276 | vdev_t *pvd = vd->vdev_parent; |
34dc7c2f | 277 | |
9babb374 | 278 | /* |
1bd201e7 | 279 | * If our parent is NULL (inactive spare or cache) or is the root, |
9babb374 BB |
280 | * just return our own asize. |
281 | */ | |
282 | if (pvd == NULL) | |
283 | return (vd->vdev_asize); | |
34dc7c2f BB |
284 | |
285 | /* | |
9babb374 BB |
286 | * The top-level vdev just returns the allocatable size rounded |
287 | * to the nearest metaslab. | |
34dc7c2f | 288 | */ |
9babb374 BB |
289 | if (vd == vd->vdev_top) |
290 | return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift)); | |
34dc7c2f | 291 | |
9babb374 BB |
292 | /* |
293 | * The allocatable space for a raidz vdev is N * sizeof(smallest child), | |
294 | * so each child must provide at least 1/Nth of its asize. | |
295 | */ | |
296 | if (pvd->vdev_ops == &vdev_raidz_ops) | |
2e215fec SH |
297 | return ((pvd->vdev_min_asize + pvd->vdev_children - 1) / |
298 | pvd->vdev_children); | |
34dc7c2f | 299 | |
9babb374 BB |
300 | return (pvd->vdev_min_asize); |
301 | } | |
302 | ||
303 | void | |
304 | vdev_set_min_asize(vdev_t *vd) | |
305 | { | |
306 | vd->vdev_min_asize = vdev_get_min_asize(vd); | |
34dc7c2f | 307 | |
1c27024e | 308 | for (int c = 0; c < vd->vdev_children; c++) |
9babb374 | 309 | vdev_set_min_asize(vd->vdev_child[c]); |
34dc7c2f BB |
310 | } |
311 | ||
312 | vdev_t * | |
313 | vdev_lookup_top(spa_t *spa, uint64_t vdev) | |
314 | { | |
315 | vdev_t *rvd = spa->spa_root_vdev; | |
316 | ||
b128c09f | 317 | ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); |
34dc7c2f | 318 | |
b128c09f BB |
319 | if (vdev < rvd->vdev_children) { |
320 | ASSERT(rvd->vdev_child[vdev] != NULL); | |
34dc7c2f | 321 | return (rvd->vdev_child[vdev]); |
b128c09f | 322 | } |
34dc7c2f BB |
323 | |
324 | return (NULL); | |
325 | } | |
326 | ||
327 | vdev_t * | |
328 | vdev_lookup_by_guid(vdev_t *vd, uint64_t guid) | |
329 | { | |
34dc7c2f BB |
330 | vdev_t *mvd; |
331 | ||
332 | if (vd->vdev_guid == guid) | |
333 | return (vd); | |
334 | ||
1c27024e | 335 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
336 | if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) != |
337 | NULL) | |
338 | return (mvd); | |
339 | ||
340 | return (NULL); | |
341 | } | |
342 | ||
9c43027b AJ |
343 | static int |
344 | vdev_count_leaves_impl(vdev_t *vd) | |
345 | { | |
346 | int n = 0; | |
9c43027b AJ |
347 | |
348 | if (vd->vdev_ops->vdev_op_leaf) | |
349 | return (1); | |
350 | ||
1c27024e | 351 | for (int c = 0; c < vd->vdev_children; c++) |
9c43027b AJ |
352 | n += vdev_count_leaves_impl(vd->vdev_child[c]); |
353 | ||
354 | return (n); | |
355 | } | |
356 | ||
357 | int | |
358 | vdev_count_leaves(spa_t *spa) | |
359 | { | |
743253df OF |
360 | int rc; |
361 | ||
362 | spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); | |
363 | rc = vdev_count_leaves_impl(spa->spa_root_vdev); | |
364 | spa_config_exit(spa, SCL_VDEV, FTAG); | |
365 | ||
366 | return (rc); | |
9c43027b AJ |
367 | } |
368 | ||
34dc7c2f BB |
369 | void |
370 | vdev_add_child(vdev_t *pvd, vdev_t *cvd) | |
371 | { | |
372 | size_t oldsize, newsize; | |
373 | uint64_t id = cvd->vdev_id; | |
374 | vdev_t **newchild; | |
375 | ||
44de2f02 | 376 | ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
377 | ASSERT(cvd->vdev_parent == NULL); |
378 | ||
379 | cvd->vdev_parent = pvd; | |
380 | ||
381 | if (pvd == NULL) | |
382 | return; | |
383 | ||
384 | ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL); | |
385 | ||
386 | oldsize = pvd->vdev_children * sizeof (vdev_t *); | |
387 | pvd->vdev_children = MAX(pvd->vdev_children, id + 1); | |
388 | newsize = pvd->vdev_children * sizeof (vdev_t *); | |
389 | ||
79c76d5b | 390 | newchild = kmem_alloc(newsize, KM_SLEEP); |
34dc7c2f BB |
391 | if (pvd->vdev_child != NULL) { |
392 | bcopy(pvd->vdev_child, newchild, oldsize); | |
393 | kmem_free(pvd->vdev_child, oldsize); | |
394 | } | |
395 | ||
396 | pvd->vdev_child = newchild; | |
397 | pvd->vdev_child[id] = cvd; | |
398 | ||
399 | cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd); | |
400 | ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL); | |
401 | ||
402 | /* | |
403 | * Walk up all ancestors to update guid sum. | |
404 | */ | |
405 | for (; pvd != NULL; pvd = pvd->vdev_parent) | |
406 | pvd->vdev_guid_sum += cvd->vdev_guid_sum; | |
3d31aad8 OF |
407 | |
408 | if (cvd->vdev_ops->vdev_op_leaf) { | |
409 | list_insert_head(&cvd->vdev_spa->spa_leaf_list, cvd); | |
410 | cvd->vdev_spa->spa_leaf_list_gen++; | |
411 | } | |
34dc7c2f BB |
412 | } |
413 | ||
414 | void | |
415 | vdev_remove_child(vdev_t *pvd, vdev_t *cvd) | |
416 | { | |
417 | int c; | |
418 | uint_t id = cvd->vdev_id; | |
419 | ||
420 | ASSERT(cvd->vdev_parent == pvd); | |
421 | ||
422 | if (pvd == NULL) | |
423 | return; | |
424 | ||
425 | ASSERT(id < pvd->vdev_children); | |
426 | ASSERT(pvd->vdev_child[id] == cvd); | |
427 | ||
428 | pvd->vdev_child[id] = NULL; | |
429 | cvd->vdev_parent = NULL; | |
430 | ||
431 | for (c = 0; c < pvd->vdev_children; c++) | |
432 | if (pvd->vdev_child[c]) | |
433 | break; | |
434 | ||
435 | if (c == pvd->vdev_children) { | |
436 | kmem_free(pvd->vdev_child, c * sizeof (vdev_t *)); | |
437 | pvd->vdev_child = NULL; | |
438 | pvd->vdev_children = 0; | |
439 | } | |
440 | ||
3d31aad8 OF |
441 | if (cvd->vdev_ops->vdev_op_leaf) { |
442 | spa_t *spa = cvd->vdev_spa; | |
443 | list_remove(&spa->spa_leaf_list, cvd); | |
444 | spa->spa_leaf_list_gen++; | |
445 | } | |
446 | ||
34dc7c2f BB |
447 | /* |
448 | * Walk up all ancestors to update guid sum. | |
449 | */ | |
450 | for (; pvd != NULL; pvd = pvd->vdev_parent) | |
451 | pvd->vdev_guid_sum -= cvd->vdev_guid_sum; | |
34dc7c2f BB |
452 | } |
453 | ||
454 | /* | |
455 | * Remove any holes in the child array. | |
456 | */ | |
457 | void | |
458 | vdev_compact_children(vdev_t *pvd) | |
459 | { | |
460 | vdev_t **newchild, *cvd; | |
461 | int oldc = pvd->vdev_children; | |
9babb374 | 462 | int newc; |
34dc7c2f | 463 | |
b128c09f | 464 | ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f | 465 | |
a1d477c2 MA |
466 | if (oldc == 0) |
467 | return; | |
468 | ||
1c27024e | 469 | for (int c = newc = 0; c < oldc; c++) |
34dc7c2f BB |
470 | if (pvd->vdev_child[c]) |
471 | newc++; | |
472 | ||
a1d477c2 MA |
473 | if (newc > 0) { |
474 | newchild = kmem_zalloc(newc * sizeof (vdev_t *), KM_SLEEP); | |
34dc7c2f | 475 | |
a1d477c2 MA |
476 | for (int c = newc = 0; c < oldc; c++) { |
477 | if ((cvd = pvd->vdev_child[c]) != NULL) { | |
478 | newchild[newc] = cvd; | |
479 | cvd->vdev_id = newc++; | |
480 | } | |
34dc7c2f | 481 | } |
a1d477c2 MA |
482 | } else { |
483 | newchild = NULL; | |
34dc7c2f BB |
484 | } |
485 | ||
486 | kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *)); | |
487 | pvd->vdev_child = newchild; | |
488 | pvd->vdev_children = newc; | |
489 | } | |
490 | ||
491 | /* | |
492 | * Allocate and minimally initialize a vdev_t. | |
493 | */ | |
428870ff | 494 | vdev_t * |
34dc7c2f BB |
495 | vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops) |
496 | { | |
497 | vdev_t *vd; | |
a1d477c2 | 498 | vdev_indirect_config_t *vic; |
34dc7c2f | 499 | |
79c76d5b | 500 | vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP); |
a1d477c2 | 501 | vic = &vd->vdev_indirect_config; |
34dc7c2f BB |
502 | |
503 | if (spa->spa_root_vdev == NULL) { | |
504 | ASSERT(ops == &vdev_root_ops); | |
505 | spa->spa_root_vdev = vd; | |
3541dc6d | 506 | spa->spa_load_guid = spa_generate_guid(NULL); |
34dc7c2f BB |
507 | } |
508 | ||
428870ff | 509 | if (guid == 0 && ops != &vdev_hole_ops) { |
34dc7c2f BB |
510 | if (spa->spa_root_vdev == vd) { |
511 | /* | |
512 | * The root vdev's guid will also be the pool guid, | |
513 | * which must be unique among all pools. | |
514 | */ | |
428870ff | 515 | guid = spa_generate_guid(NULL); |
34dc7c2f BB |
516 | } else { |
517 | /* | |
518 | * Any other vdev's guid must be unique within the pool. | |
519 | */ | |
428870ff | 520 | guid = spa_generate_guid(spa); |
34dc7c2f BB |
521 | } |
522 | ASSERT(!spa_guid_exists(spa_guid(spa), guid)); | |
523 | } | |
524 | ||
525 | vd->vdev_spa = spa; | |
526 | vd->vdev_id = id; | |
527 | vd->vdev_guid = guid; | |
528 | vd->vdev_guid_sum = guid; | |
529 | vd->vdev_ops = ops; | |
530 | vd->vdev_state = VDEV_STATE_CLOSED; | |
428870ff | 531 | vd->vdev_ishole = (ops == &vdev_hole_ops); |
a1d477c2 MA |
532 | vic->vic_prev_indirect_vdev = UINT64_MAX; |
533 | ||
534 | rw_init(&vd->vdev_indirect_rwlock, NULL, RW_DEFAULT, NULL); | |
535 | mutex_init(&vd->vdev_obsolete_lock, NULL, MUTEX_DEFAULT, NULL); | |
ca577779 PD |
536 | vd->vdev_obsolete_segments = range_tree_create(NULL, RANGE_SEG64, NULL, |
537 | 0, 0); | |
34dc7c2f | 538 | |
6078881a TH |
539 | /* |
540 | * Initialize rate limit structs for events. We rate limit ZIO delay | |
541 | * and checksum events so that we don't overwhelm ZED with thousands | |
542 | * of events when a disk is acting up. | |
543 | */ | |
ad796b8a TH |
544 | zfs_ratelimit_init(&vd->vdev_delay_rl, &zfs_slow_io_events_per_second, |
545 | 1); | |
546 | zfs_ratelimit_init(&vd->vdev_checksum_rl, | |
547 | &zfs_checksum_events_per_second, 1); | |
6078881a | 548 | |
98f72a53 BB |
549 | list_link_init(&vd->vdev_config_dirty_node); |
550 | list_link_init(&vd->vdev_state_dirty_node); | |
c10d37dd | 551 | list_link_init(&vd->vdev_initialize_node); |
3d31aad8 | 552 | list_link_init(&vd->vdev_leaf_node); |
1b939560 | 553 | list_link_init(&vd->vdev_trim_node); |
448d7aaa | 554 | mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_NOLOCKDEP, NULL); |
34dc7c2f | 555 | mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL); |
b128c09f | 556 | mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL); |
d4a72f23 | 557 | mutex_init(&vd->vdev_scan_io_queue_lock, NULL, MUTEX_DEFAULT, NULL); |
9a49d3f3 | 558 | |
619f0976 GW |
559 | mutex_init(&vd->vdev_initialize_lock, NULL, MUTEX_DEFAULT, NULL); |
560 | mutex_init(&vd->vdev_initialize_io_lock, NULL, MUTEX_DEFAULT, NULL); | |
561 | cv_init(&vd->vdev_initialize_cv, NULL, CV_DEFAULT, NULL); | |
562 | cv_init(&vd->vdev_initialize_io_cv, NULL, CV_DEFAULT, NULL); | |
9a49d3f3 | 563 | |
1b939560 BB |
564 | mutex_init(&vd->vdev_trim_lock, NULL, MUTEX_DEFAULT, NULL); |
565 | mutex_init(&vd->vdev_autotrim_lock, NULL, MUTEX_DEFAULT, NULL); | |
566 | mutex_init(&vd->vdev_trim_io_lock, NULL, MUTEX_DEFAULT, NULL); | |
567 | cv_init(&vd->vdev_trim_cv, NULL, CV_DEFAULT, NULL); | |
568 | cv_init(&vd->vdev_autotrim_cv, NULL, CV_DEFAULT, NULL); | |
569 | cv_init(&vd->vdev_trim_io_cv, NULL, CV_DEFAULT, NULL); | |
6078881a | 570 | |
9a49d3f3 BB |
571 | mutex_init(&vd->vdev_rebuild_lock, NULL, MUTEX_DEFAULT, NULL); |
572 | mutex_init(&vd->vdev_rebuild_io_lock, NULL, MUTEX_DEFAULT, NULL); | |
573 | cv_init(&vd->vdev_rebuild_cv, NULL, CV_DEFAULT, NULL); | |
574 | cv_init(&vd->vdev_rebuild_io_cv, NULL, CV_DEFAULT, NULL); | |
575 | ||
1c27024e | 576 | for (int t = 0; t < DTL_TYPES; t++) { |
ca577779 PD |
577 | vd->vdev_dtl[t] = range_tree_create(NULL, RANGE_SEG64, NULL, 0, |
578 | 0); | |
fb5f0bc8 | 579 | } |
9a49d3f3 | 580 | |
4747a7d3 | 581 | txg_list_create(&vd->vdev_ms_list, spa, |
34dc7c2f | 582 | offsetof(struct metaslab, ms_txg_node)); |
4747a7d3 | 583 | txg_list_create(&vd->vdev_dtl_list, spa, |
34dc7c2f BB |
584 | offsetof(struct vdev, vdev_dtl_node)); |
585 | vd->vdev_stat.vs_timestamp = gethrtime(); | |
586 | vdev_queue_init(vd); | |
587 | vdev_cache_init(vd); | |
588 | ||
589 | return (vd); | |
590 | } | |
591 | ||
592 | /* | |
593 | * Allocate a new vdev. The 'alloctype' is used to control whether we are | |
594 | * creating a new vdev or loading an existing one - the behavior is slightly | |
595 | * different for each case. | |
596 | */ | |
597 | int | |
598 | vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id, | |
599 | int alloctype) | |
600 | { | |
601 | vdev_ops_t *ops; | |
602 | char *type; | |
603 | uint64_t guid = 0, islog, nparity; | |
604 | vdev_t *vd; | |
a1d477c2 | 605 | vdev_indirect_config_t *vic; |
4a283c7f TH |
606 | char *tmp = NULL; |
607 | int rc; | |
cc99f275 DB |
608 | vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE; |
609 | boolean_t top_level = (parent && !parent->vdev_parent); | |
34dc7c2f | 610 | |
b128c09f | 611 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
612 | |
613 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) | |
2e528b49 | 614 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
615 | |
616 | if ((ops = vdev_getops(type)) == NULL) | |
2e528b49 | 617 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
618 | |
619 | /* | |
620 | * If this is a load, get the vdev guid from the nvlist. | |
621 | * Otherwise, vdev_alloc_common() will generate one for us. | |
622 | */ | |
623 | if (alloctype == VDEV_ALLOC_LOAD) { | |
624 | uint64_t label_id; | |
625 | ||
626 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) || | |
627 | label_id != id) | |
2e528b49 | 628 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
629 | |
630 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 631 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
632 | } else if (alloctype == VDEV_ALLOC_SPARE) { |
633 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 634 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
635 | } else if (alloctype == VDEV_ALLOC_L2CACHE) { |
636 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 637 | return (SET_ERROR(EINVAL)); |
9babb374 BB |
638 | } else if (alloctype == VDEV_ALLOC_ROOTPOOL) { |
639 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 640 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
641 | } |
642 | ||
643 | /* | |
644 | * The first allocated vdev must be of type 'root'. | |
645 | */ | |
646 | if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL) | |
2e528b49 | 647 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
648 | |
649 | /* | |
650 | * Determine whether we're a log vdev. | |
651 | */ | |
652 | islog = 0; | |
653 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog); | |
654 | if (islog && spa_version(spa) < SPA_VERSION_SLOGS) | |
2e528b49 | 655 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f | 656 | |
428870ff | 657 | if (ops == &vdev_hole_ops && spa_version(spa) < SPA_VERSION_HOLES) |
2e528b49 | 658 | return (SET_ERROR(ENOTSUP)); |
428870ff | 659 | |
34dc7c2f BB |
660 | /* |
661 | * Set the nparity property for RAID-Z vdevs. | |
662 | */ | |
663 | nparity = -1ULL; | |
664 | if (ops == &vdev_raidz_ops) { | |
665 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, | |
666 | &nparity) == 0) { | |
428870ff | 667 | if (nparity == 0 || nparity > VDEV_RAIDZ_MAXPARITY) |
2e528b49 | 668 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 669 | /* |
45d1cae3 BB |
670 | * Previous versions could only support 1 or 2 parity |
671 | * device. | |
34dc7c2f | 672 | */ |
45d1cae3 BB |
673 | if (nparity > 1 && |
674 | spa_version(spa) < SPA_VERSION_RAIDZ2) | |
2e528b49 | 675 | return (SET_ERROR(ENOTSUP)); |
45d1cae3 BB |
676 | if (nparity > 2 && |
677 | spa_version(spa) < SPA_VERSION_RAIDZ3) | |
2e528b49 | 678 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
679 | } else { |
680 | /* | |
681 | * We require the parity to be specified for SPAs that | |
682 | * support multiple parity levels. | |
683 | */ | |
45d1cae3 | 684 | if (spa_version(spa) >= SPA_VERSION_RAIDZ2) |
2e528b49 | 685 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
686 | /* |
687 | * Otherwise, we default to 1 parity device for RAID-Z. | |
688 | */ | |
689 | nparity = 1; | |
690 | } | |
691 | } else { | |
692 | nparity = 0; | |
693 | } | |
694 | ASSERT(nparity != -1ULL); | |
695 | ||
cc99f275 DB |
696 | /* |
697 | * If creating a top-level vdev, check for allocation classes input | |
698 | */ | |
699 | if (top_level && alloctype == VDEV_ALLOC_ADD) { | |
700 | char *bias; | |
701 | ||
702 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, | |
703 | &bias) == 0) { | |
704 | alloc_bias = vdev_derive_alloc_bias(bias); | |
705 | ||
706 | /* spa_vdev_add() expects feature to be enabled */ | |
707 | if (spa->spa_load_state != SPA_LOAD_CREATE && | |
708 | !spa_feature_is_enabled(spa, | |
709 | SPA_FEATURE_ALLOCATION_CLASSES)) { | |
710 | return (SET_ERROR(ENOTSUP)); | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
34dc7c2f | 715 | vd = vdev_alloc_common(spa, id, guid, ops); |
a1d477c2 | 716 | vic = &vd->vdev_indirect_config; |
34dc7c2f BB |
717 | |
718 | vd->vdev_islog = islog; | |
719 | vd->vdev_nparity = nparity; | |
cc99f275 DB |
720 | if (top_level && alloc_bias != VDEV_BIAS_NONE) |
721 | vd->vdev_alloc_bias = alloc_bias; | |
34dc7c2f BB |
722 | |
723 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &vd->vdev_path) == 0) | |
724 | vd->vdev_path = spa_strdup(vd->vdev_path); | |
4a283c7f TH |
725 | |
726 | /* | |
727 | * ZPOOL_CONFIG_AUX_STATE = "external" means we previously forced a | |
728 | * fault on a vdev and want it to persist across imports (like with | |
729 | * zpool offline -f). | |
730 | */ | |
731 | rc = nvlist_lookup_string(nv, ZPOOL_CONFIG_AUX_STATE, &tmp); | |
732 | if (rc == 0 && tmp != NULL && strcmp(tmp, "external") == 0) { | |
733 | vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL; | |
734 | vd->vdev_faulted = 1; | |
735 | vd->vdev_label_aux = VDEV_AUX_EXTERNAL; | |
736 | } | |
737 | ||
34dc7c2f BB |
738 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &vd->vdev_devid) == 0) |
739 | vd->vdev_devid = spa_strdup(vd->vdev_devid); | |
740 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH, | |
741 | &vd->vdev_physpath) == 0) | |
742 | vd->vdev_physpath = spa_strdup(vd->vdev_physpath); | |
1bbd8770 TH |
743 | |
744 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH, | |
745 | &vd->vdev_enc_sysfs_path) == 0) | |
746 | vd->vdev_enc_sysfs_path = spa_strdup(vd->vdev_enc_sysfs_path); | |
747 | ||
9babb374 BB |
748 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &vd->vdev_fru) == 0) |
749 | vd->vdev_fru = spa_strdup(vd->vdev_fru); | |
34dc7c2f BB |
750 | |
751 | /* | |
752 | * Set the whole_disk property. If it's not specified, leave the value | |
753 | * as -1. | |
754 | */ | |
755 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, | |
756 | &vd->vdev_wholedisk) != 0) | |
757 | vd->vdev_wholedisk = -1ULL; | |
758 | ||
a1d477c2 MA |
759 | ASSERT0(vic->vic_mapping_object); |
760 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_OBJECT, | |
761 | &vic->vic_mapping_object); | |
762 | ASSERT0(vic->vic_births_object); | |
763 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_BIRTHS, | |
764 | &vic->vic_births_object); | |
765 | ASSERT3U(vic->vic_prev_indirect_vdev, ==, UINT64_MAX); | |
766 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_PREV_INDIRECT_VDEV, | |
767 | &vic->vic_prev_indirect_vdev); | |
768 | ||
34dc7c2f BB |
769 | /* |
770 | * Look for the 'not present' flag. This will only be set if the device | |
771 | * was not present at the time of import. | |
772 | */ | |
9babb374 BB |
773 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, |
774 | &vd->vdev_not_present); | |
34dc7c2f BB |
775 | |
776 | /* | |
777 | * Get the alignment requirement. | |
778 | */ | |
779 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &vd->vdev_ashift); | |
780 | ||
428870ff BB |
781 | /* |
782 | * Retrieve the vdev creation time. | |
783 | */ | |
784 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_CREATE_TXG, | |
785 | &vd->vdev_crtxg); | |
786 | ||
34dc7c2f BB |
787 | /* |
788 | * If we're a top-level vdev, try to load the allocation parameters. | |
789 | */ | |
cc99f275 | 790 | if (top_level && |
428870ff | 791 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { |
34dc7c2f BB |
792 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY, |
793 | &vd->vdev_ms_array); | |
794 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT, | |
795 | &vd->vdev_ms_shift); | |
796 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE, | |
797 | &vd->vdev_asize); | |
428870ff BB |
798 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVING, |
799 | &vd->vdev_removing); | |
e0ab3ab5 JS |
800 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP, |
801 | &vd->vdev_top_zap); | |
802 | } else { | |
803 | ASSERT0(vd->vdev_top_zap); | |
428870ff BB |
804 | } |
805 | ||
cc99f275 | 806 | if (top_level && alloctype != VDEV_ALLOC_ATTACH) { |
428870ff BB |
807 | ASSERT(alloctype == VDEV_ALLOC_LOAD || |
808 | alloctype == VDEV_ALLOC_ADD || | |
809 | alloctype == VDEV_ALLOC_SPLIT || | |
810 | alloctype == VDEV_ALLOC_ROOTPOOL); | |
cc99f275 | 811 | /* Note: metaslab_group_create() is now deferred */ |
34dc7c2f BB |
812 | } |
813 | ||
e0ab3ab5 JS |
814 | if (vd->vdev_ops->vdev_op_leaf && |
815 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { | |
816 | (void) nvlist_lookup_uint64(nv, | |
817 | ZPOOL_CONFIG_VDEV_LEAF_ZAP, &vd->vdev_leaf_zap); | |
818 | } else { | |
819 | ASSERT0(vd->vdev_leaf_zap); | |
820 | } | |
821 | ||
34dc7c2f BB |
822 | /* |
823 | * If we're a leaf vdev, try to load the DTL object and other state. | |
824 | */ | |
e0ab3ab5 | 825 | |
b128c09f | 826 | if (vd->vdev_ops->vdev_op_leaf && |
9babb374 BB |
827 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE || |
828 | alloctype == VDEV_ALLOC_ROOTPOOL)) { | |
b128c09f BB |
829 | if (alloctype == VDEV_ALLOC_LOAD) { |
830 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL, | |
93cf2076 | 831 | &vd->vdev_dtl_object); |
b128c09f BB |
832 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE, |
833 | &vd->vdev_unspare); | |
834 | } | |
9babb374 BB |
835 | |
836 | if (alloctype == VDEV_ALLOC_ROOTPOOL) { | |
837 | uint64_t spare = 0; | |
838 | ||
839 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, | |
840 | &spare) == 0 && spare) | |
841 | spa_spare_add(vd); | |
842 | } | |
843 | ||
34dc7c2f BB |
844 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, |
845 | &vd->vdev_offline); | |
b128c09f | 846 | |
5d1f7fb6 GW |
847 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG, |
848 | &vd->vdev_resilver_txg); | |
572e2857 | 849 | |
9a49d3f3 BB |
850 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REBUILD_TXG, |
851 | &vd->vdev_rebuild_txg); | |
852 | ||
80a91e74 | 853 | if (nvlist_exists(nv, ZPOOL_CONFIG_RESILVER_DEFER)) |
3c819a2c | 854 | vdev_defer_resilver(vd); |
80a91e74 | 855 | |
34dc7c2f | 856 | /* |
4a283c7f TH |
857 | * In general, when importing a pool we want to ignore the |
858 | * persistent fault state, as the diagnosis made on another | |
859 | * system may not be valid in the current context. The only | |
860 | * exception is if we forced a vdev to a persistently faulted | |
861 | * state with 'zpool offline -f'. The persistent fault will | |
862 | * remain across imports until cleared. | |
863 | * | |
864 | * Local vdevs will remain in the faulted state. | |
34dc7c2f | 865 | */ |
4a283c7f TH |
866 | if (spa_load_state(spa) == SPA_LOAD_OPEN || |
867 | spa_load_state(spa) == SPA_LOAD_IMPORT) { | |
34dc7c2f BB |
868 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, |
869 | &vd->vdev_faulted); | |
870 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED, | |
871 | &vd->vdev_degraded); | |
872 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, | |
873 | &vd->vdev_removed); | |
428870ff BB |
874 | |
875 | if (vd->vdev_faulted || vd->vdev_degraded) { | |
876 | char *aux; | |
877 | ||
878 | vd->vdev_label_aux = | |
879 | VDEV_AUX_ERR_EXCEEDED; | |
880 | if (nvlist_lookup_string(nv, | |
881 | ZPOOL_CONFIG_AUX_STATE, &aux) == 0 && | |
882 | strcmp(aux, "external") == 0) | |
883 | vd->vdev_label_aux = VDEV_AUX_EXTERNAL; | |
a0ad7ca5 TC |
884 | else |
885 | vd->vdev_faulted = 0ULL; | |
428870ff | 886 | } |
34dc7c2f BB |
887 | } |
888 | } | |
889 | ||
890 | /* | |
891 | * Add ourselves to the parent's list of children. | |
892 | */ | |
893 | vdev_add_child(parent, vd); | |
894 | ||
895 | *vdp = vd; | |
896 | ||
897 | return (0); | |
898 | } | |
899 | ||
900 | void | |
901 | vdev_free(vdev_t *vd) | |
902 | { | |
34dc7c2f | 903 | spa_t *spa = vd->vdev_spa; |
1b939560 | 904 | |
619f0976 | 905 | ASSERT3P(vd->vdev_initialize_thread, ==, NULL); |
1b939560 BB |
906 | ASSERT3P(vd->vdev_trim_thread, ==, NULL); |
907 | ASSERT3P(vd->vdev_autotrim_thread, ==, NULL); | |
9a49d3f3 | 908 | ASSERT3P(vd->vdev_rebuild_thread, ==, NULL); |
34dc7c2f | 909 | |
d4a72f23 TC |
910 | /* |
911 | * Scan queues are normally destroyed at the end of a scan. If the | |
912 | * queue exists here, that implies the vdev is being removed while | |
913 | * the scan is still running. | |
914 | */ | |
915 | if (vd->vdev_scan_io_queue != NULL) { | |
916 | mutex_enter(&vd->vdev_scan_io_queue_lock); | |
917 | dsl_scan_io_queue_destroy(vd->vdev_scan_io_queue); | |
918 | vd->vdev_scan_io_queue = NULL; | |
919 | mutex_exit(&vd->vdev_scan_io_queue_lock); | |
920 | } | |
921 | ||
34dc7c2f BB |
922 | /* |
923 | * vdev_free() implies closing the vdev first. This is simpler than | |
924 | * trying to ensure complicated semantics for all callers. | |
925 | */ | |
926 | vdev_close(vd); | |
927 | ||
b128c09f | 928 | ASSERT(!list_link_active(&vd->vdev_config_dirty_node)); |
428870ff | 929 | ASSERT(!list_link_active(&vd->vdev_state_dirty_node)); |
34dc7c2f BB |
930 | |
931 | /* | |
932 | * Free all children. | |
933 | */ | |
1c27024e | 934 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
935 | vdev_free(vd->vdev_child[c]); |
936 | ||
937 | ASSERT(vd->vdev_child == NULL); | |
938 | ASSERT(vd->vdev_guid_sum == vd->vdev_guid); | |
939 | ||
940 | /* | |
941 | * Discard allocation state. | |
942 | */ | |
428870ff | 943 | if (vd->vdev_mg != NULL) { |
34dc7c2f | 944 | vdev_metaslab_fini(vd); |
428870ff | 945 | metaslab_group_destroy(vd->vdev_mg); |
93e28d66 | 946 | vd->vdev_mg = NULL; |
428870ff | 947 | } |
34dc7c2f | 948 | |
c99c9001 MS |
949 | ASSERT0(vd->vdev_stat.vs_space); |
950 | ASSERT0(vd->vdev_stat.vs_dspace); | |
951 | ASSERT0(vd->vdev_stat.vs_alloc); | |
34dc7c2f BB |
952 | |
953 | /* | |
954 | * Remove this vdev from its parent's child list. | |
955 | */ | |
956 | vdev_remove_child(vd->vdev_parent, vd); | |
957 | ||
958 | ASSERT(vd->vdev_parent == NULL); | |
3d31aad8 | 959 | ASSERT(!list_link_active(&vd->vdev_leaf_node)); |
34dc7c2f BB |
960 | |
961 | /* | |
962 | * Clean up vdev structure. | |
963 | */ | |
964 | vdev_queue_fini(vd); | |
965 | vdev_cache_fini(vd); | |
966 | ||
967 | if (vd->vdev_path) | |
968 | spa_strfree(vd->vdev_path); | |
969 | if (vd->vdev_devid) | |
970 | spa_strfree(vd->vdev_devid); | |
971 | if (vd->vdev_physpath) | |
972 | spa_strfree(vd->vdev_physpath); | |
1bbd8770 TH |
973 | |
974 | if (vd->vdev_enc_sysfs_path) | |
975 | spa_strfree(vd->vdev_enc_sysfs_path); | |
976 | ||
9babb374 BB |
977 | if (vd->vdev_fru) |
978 | spa_strfree(vd->vdev_fru); | |
34dc7c2f BB |
979 | |
980 | if (vd->vdev_isspare) | |
981 | spa_spare_remove(vd); | |
982 | if (vd->vdev_isl2cache) | |
983 | spa_l2cache_remove(vd); | |
984 | ||
985 | txg_list_destroy(&vd->vdev_ms_list); | |
986 | txg_list_destroy(&vd->vdev_dtl_list); | |
fb5f0bc8 | 987 | |
34dc7c2f | 988 | mutex_enter(&vd->vdev_dtl_lock); |
93cf2076 | 989 | space_map_close(vd->vdev_dtl_sm); |
1c27024e | 990 | for (int t = 0; t < DTL_TYPES; t++) { |
93cf2076 GW |
991 | range_tree_vacate(vd->vdev_dtl[t], NULL, NULL); |
992 | range_tree_destroy(vd->vdev_dtl[t]); | |
fb5f0bc8 | 993 | } |
34dc7c2f | 994 | mutex_exit(&vd->vdev_dtl_lock); |
fb5f0bc8 | 995 | |
a1d477c2 MA |
996 | EQUIV(vd->vdev_indirect_births != NULL, |
997 | vd->vdev_indirect_mapping != NULL); | |
998 | if (vd->vdev_indirect_births != NULL) { | |
999 | vdev_indirect_mapping_close(vd->vdev_indirect_mapping); | |
1000 | vdev_indirect_births_close(vd->vdev_indirect_births); | |
1001 | } | |
1002 | ||
1003 | if (vd->vdev_obsolete_sm != NULL) { | |
1004 | ASSERT(vd->vdev_removing || | |
1005 | vd->vdev_ops == &vdev_indirect_ops); | |
1006 | space_map_close(vd->vdev_obsolete_sm); | |
1007 | vd->vdev_obsolete_sm = NULL; | |
1008 | } | |
1009 | range_tree_destroy(vd->vdev_obsolete_segments); | |
1010 | rw_destroy(&vd->vdev_indirect_rwlock); | |
1011 | mutex_destroy(&vd->vdev_obsolete_lock); | |
1012 | ||
34dc7c2f BB |
1013 | mutex_destroy(&vd->vdev_dtl_lock); |
1014 | mutex_destroy(&vd->vdev_stat_lock); | |
b128c09f | 1015 | mutex_destroy(&vd->vdev_probe_lock); |
d4a72f23 | 1016 | mutex_destroy(&vd->vdev_scan_io_queue_lock); |
9a49d3f3 | 1017 | |
619f0976 GW |
1018 | mutex_destroy(&vd->vdev_initialize_lock); |
1019 | mutex_destroy(&vd->vdev_initialize_io_lock); | |
1020 | cv_destroy(&vd->vdev_initialize_io_cv); | |
1021 | cv_destroy(&vd->vdev_initialize_cv); | |
9a49d3f3 | 1022 | |
1b939560 BB |
1023 | mutex_destroy(&vd->vdev_trim_lock); |
1024 | mutex_destroy(&vd->vdev_autotrim_lock); | |
1025 | mutex_destroy(&vd->vdev_trim_io_lock); | |
1026 | cv_destroy(&vd->vdev_trim_cv); | |
1027 | cv_destroy(&vd->vdev_autotrim_cv); | |
1028 | cv_destroy(&vd->vdev_trim_io_cv); | |
34dc7c2f | 1029 | |
9a49d3f3 BB |
1030 | mutex_destroy(&vd->vdev_rebuild_lock); |
1031 | mutex_destroy(&vd->vdev_rebuild_io_lock); | |
1032 | cv_destroy(&vd->vdev_rebuild_cv); | |
1033 | cv_destroy(&vd->vdev_rebuild_io_cv); | |
1034 | ||
c17486b2 GN |
1035 | zfs_ratelimit_fini(&vd->vdev_delay_rl); |
1036 | zfs_ratelimit_fini(&vd->vdev_checksum_rl); | |
1037 | ||
34dc7c2f BB |
1038 | if (vd == spa->spa_root_vdev) |
1039 | spa->spa_root_vdev = NULL; | |
1040 | ||
1041 | kmem_free(vd, sizeof (vdev_t)); | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Transfer top-level vdev state from svd to tvd. | |
1046 | */ | |
1047 | static void | |
1048 | vdev_top_transfer(vdev_t *svd, vdev_t *tvd) | |
1049 | { | |
1050 | spa_t *spa = svd->vdev_spa; | |
1051 | metaslab_t *msp; | |
1052 | vdev_t *vd; | |
1053 | int t; | |
1054 | ||
1055 | ASSERT(tvd == tvd->vdev_top); | |
1056 | ||
77943bc1 | 1057 | tvd->vdev_pending_fastwrite = svd->vdev_pending_fastwrite; |
34dc7c2f BB |
1058 | tvd->vdev_ms_array = svd->vdev_ms_array; |
1059 | tvd->vdev_ms_shift = svd->vdev_ms_shift; | |
1060 | tvd->vdev_ms_count = svd->vdev_ms_count; | |
e0ab3ab5 | 1061 | tvd->vdev_top_zap = svd->vdev_top_zap; |
34dc7c2f BB |
1062 | |
1063 | svd->vdev_ms_array = 0; | |
1064 | svd->vdev_ms_shift = 0; | |
1065 | svd->vdev_ms_count = 0; | |
e0ab3ab5 | 1066 | svd->vdev_top_zap = 0; |
34dc7c2f | 1067 | |
5ffb9d1d GW |
1068 | if (tvd->vdev_mg) |
1069 | ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg); | |
34dc7c2f BB |
1070 | tvd->vdev_mg = svd->vdev_mg; |
1071 | tvd->vdev_ms = svd->vdev_ms; | |
1072 | ||
1073 | svd->vdev_mg = NULL; | |
1074 | svd->vdev_ms = NULL; | |
1075 | ||
1076 | if (tvd->vdev_mg != NULL) | |
1077 | tvd->vdev_mg->mg_vd = tvd; | |
1078 | ||
d2734cce SD |
1079 | tvd->vdev_checkpoint_sm = svd->vdev_checkpoint_sm; |
1080 | svd->vdev_checkpoint_sm = NULL; | |
1081 | ||
cc99f275 DB |
1082 | tvd->vdev_alloc_bias = svd->vdev_alloc_bias; |
1083 | svd->vdev_alloc_bias = VDEV_BIAS_NONE; | |
1084 | ||
34dc7c2f BB |
1085 | tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc; |
1086 | tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space; | |
1087 | tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace; | |
1088 | ||
1089 | svd->vdev_stat.vs_alloc = 0; | |
1090 | svd->vdev_stat.vs_space = 0; | |
1091 | svd->vdev_stat.vs_dspace = 0; | |
1092 | ||
9e052db4 MA |
1093 | /* |
1094 | * State which may be set on a top-level vdev that's in the | |
1095 | * process of being removed. | |
1096 | */ | |
1097 | ASSERT0(tvd->vdev_indirect_config.vic_births_object); | |
1098 | ASSERT0(tvd->vdev_indirect_config.vic_mapping_object); | |
1099 | ASSERT3U(tvd->vdev_indirect_config.vic_prev_indirect_vdev, ==, -1ULL); | |
1100 | ASSERT3P(tvd->vdev_indirect_mapping, ==, NULL); | |
1101 | ASSERT3P(tvd->vdev_indirect_births, ==, NULL); | |
1102 | ASSERT3P(tvd->vdev_obsolete_sm, ==, NULL); | |
1103 | ASSERT0(tvd->vdev_removing); | |
9a49d3f3 | 1104 | ASSERT0(tvd->vdev_rebuilding); |
9e052db4 | 1105 | tvd->vdev_removing = svd->vdev_removing; |
9a49d3f3 BB |
1106 | tvd->vdev_rebuilding = svd->vdev_rebuilding; |
1107 | tvd->vdev_rebuild_config = svd->vdev_rebuild_config; | |
9e052db4 MA |
1108 | tvd->vdev_indirect_config = svd->vdev_indirect_config; |
1109 | tvd->vdev_indirect_mapping = svd->vdev_indirect_mapping; | |
1110 | tvd->vdev_indirect_births = svd->vdev_indirect_births; | |
1111 | range_tree_swap(&svd->vdev_obsolete_segments, | |
1112 | &tvd->vdev_obsolete_segments); | |
1113 | tvd->vdev_obsolete_sm = svd->vdev_obsolete_sm; | |
1114 | svd->vdev_indirect_config.vic_mapping_object = 0; | |
1115 | svd->vdev_indirect_config.vic_births_object = 0; | |
1116 | svd->vdev_indirect_config.vic_prev_indirect_vdev = -1ULL; | |
1117 | svd->vdev_indirect_mapping = NULL; | |
1118 | svd->vdev_indirect_births = NULL; | |
1119 | svd->vdev_obsolete_sm = NULL; | |
1120 | svd->vdev_removing = 0; | |
9a49d3f3 | 1121 | svd->vdev_rebuilding = 0; |
9e052db4 | 1122 | |
34dc7c2f BB |
1123 | for (t = 0; t < TXG_SIZE; t++) { |
1124 | while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL) | |
1125 | (void) txg_list_add(&tvd->vdev_ms_list, msp, t); | |
1126 | while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL) | |
1127 | (void) txg_list_add(&tvd->vdev_dtl_list, vd, t); | |
1128 | if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t)) | |
1129 | (void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t); | |
1130 | } | |
1131 | ||
b128c09f | 1132 | if (list_link_active(&svd->vdev_config_dirty_node)) { |
34dc7c2f BB |
1133 | vdev_config_clean(svd); |
1134 | vdev_config_dirty(tvd); | |
1135 | } | |
1136 | ||
b128c09f BB |
1137 | if (list_link_active(&svd->vdev_state_dirty_node)) { |
1138 | vdev_state_clean(svd); | |
1139 | vdev_state_dirty(tvd); | |
1140 | } | |
1141 | ||
34dc7c2f BB |
1142 | tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio; |
1143 | svd->vdev_deflate_ratio = 0; | |
1144 | ||
1145 | tvd->vdev_islog = svd->vdev_islog; | |
1146 | svd->vdev_islog = 0; | |
d4a72f23 TC |
1147 | |
1148 | dsl_scan_io_queue_vdev_xfer(svd, tvd); | |
34dc7c2f BB |
1149 | } |
1150 | ||
1151 | static void | |
1152 | vdev_top_update(vdev_t *tvd, vdev_t *vd) | |
1153 | { | |
34dc7c2f BB |
1154 | if (vd == NULL) |
1155 | return; | |
1156 | ||
1157 | vd->vdev_top = tvd; | |
1158 | ||
1c27024e | 1159 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
1160 | vdev_top_update(tvd, vd->vdev_child[c]); |
1161 | } | |
1162 | ||
1163 | /* | |
1164 | * Add a mirror/replacing vdev above an existing vdev. | |
1165 | */ | |
1166 | vdev_t * | |
1167 | vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops) | |
1168 | { | |
1169 | spa_t *spa = cvd->vdev_spa; | |
1170 | vdev_t *pvd = cvd->vdev_parent; | |
1171 | vdev_t *mvd; | |
1172 | ||
b128c09f | 1173 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
1174 | |
1175 | mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops); | |
1176 | ||
1177 | mvd->vdev_asize = cvd->vdev_asize; | |
9babb374 | 1178 | mvd->vdev_min_asize = cvd->vdev_min_asize; |
1bd201e7 | 1179 | mvd->vdev_max_asize = cvd->vdev_max_asize; |
a1d477c2 | 1180 | mvd->vdev_psize = cvd->vdev_psize; |
34dc7c2f | 1181 | mvd->vdev_ashift = cvd->vdev_ashift; |
6fe3498c RM |
1182 | mvd->vdev_logical_ashift = cvd->vdev_logical_ashift; |
1183 | mvd->vdev_physical_ashift = cvd->vdev_physical_ashift; | |
34dc7c2f | 1184 | mvd->vdev_state = cvd->vdev_state; |
428870ff | 1185 | mvd->vdev_crtxg = cvd->vdev_crtxg; |
34dc7c2f BB |
1186 | |
1187 | vdev_remove_child(pvd, cvd); | |
1188 | vdev_add_child(pvd, mvd); | |
1189 | cvd->vdev_id = mvd->vdev_children; | |
1190 | vdev_add_child(mvd, cvd); | |
1191 | vdev_top_update(cvd->vdev_top, cvd->vdev_top); | |
1192 | ||
1193 | if (mvd == mvd->vdev_top) | |
1194 | vdev_top_transfer(cvd, mvd); | |
1195 | ||
1196 | return (mvd); | |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * Remove a 1-way mirror/replacing vdev from the tree. | |
1201 | */ | |
1202 | void | |
1203 | vdev_remove_parent(vdev_t *cvd) | |
1204 | { | |
1205 | vdev_t *mvd = cvd->vdev_parent; | |
1206 | vdev_t *pvd = mvd->vdev_parent; | |
1207 | ||
b128c09f | 1208 | ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
1209 | |
1210 | ASSERT(mvd->vdev_children == 1); | |
1211 | ASSERT(mvd->vdev_ops == &vdev_mirror_ops || | |
1212 | mvd->vdev_ops == &vdev_replacing_ops || | |
1213 | mvd->vdev_ops == &vdev_spare_ops); | |
1214 | cvd->vdev_ashift = mvd->vdev_ashift; | |
6fe3498c RM |
1215 | cvd->vdev_logical_ashift = mvd->vdev_logical_ashift; |
1216 | cvd->vdev_physical_ashift = mvd->vdev_physical_ashift; | |
34dc7c2f BB |
1217 | vdev_remove_child(mvd, cvd); |
1218 | vdev_remove_child(pvd, mvd); | |
fb5f0bc8 | 1219 | |
34dc7c2f | 1220 | /* |
b128c09f BB |
1221 | * If cvd will replace mvd as a top-level vdev, preserve mvd's guid. |
1222 | * Otherwise, we could have detached an offline device, and when we | |
1223 | * go to import the pool we'll think we have two top-level vdevs, | |
1224 | * instead of a different version of the same top-level vdev. | |
34dc7c2f | 1225 | */ |
fb5f0bc8 BB |
1226 | if (mvd->vdev_top == mvd) { |
1227 | uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid; | |
428870ff | 1228 | cvd->vdev_orig_guid = cvd->vdev_guid; |
fb5f0bc8 BB |
1229 | cvd->vdev_guid += guid_delta; |
1230 | cvd->vdev_guid_sum += guid_delta; | |
61e99a73 AB |
1231 | |
1232 | /* | |
1233 | * If pool not set for autoexpand, we need to also preserve | |
1234 | * mvd's asize to prevent automatic expansion of cvd. | |
1235 | * Otherwise if we are adjusting the mirror by attaching and | |
1236 | * detaching children of non-uniform sizes, the mirror could | |
1237 | * autoexpand, unexpectedly requiring larger devices to | |
1238 | * re-establish the mirror. | |
1239 | */ | |
1240 | if (!cvd->vdev_spa->spa_autoexpand) | |
1241 | cvd->vdev_asize = mvd->vdev_asize; | |
fb5f0bc8 | 1242 | } |
b128c09f BB |
1243 | cvd->vdev_id = mvd->vdev_id; |
1244 | vdev_add_child(pvd, cvd); | |
34dc7c2f BB |
1245 | vdev_top_update(cvd->vdev_top, cvd->vdev_top); |
1246 | ||
1247 | if (cvd == cvd->vdev_top) | |
1248 | vdev_top_transfer(mvd, cvd); | |
1249 | ||
1250 | ASSERT(mvd->vdev_children == 0); | |
1251 | vdev_free(mvd); | |
1252 | } | |
1253 | ||
cc99f275 DB |
1254 | static void |
1255 | vdev_metaslab_group_create(vdev_t *vd) | |
1256 | { | |
1257 | spa_t *spa = vd->vdev_spa; | |
1258 | ||
1259 | /* | |
1260 | * metaslab_group_create was delayed until allocation bias was available | |
1261 | */ | |
1262 | if (vd->vdev_mg == NULL) { | |
1263 | metaslab_class_t *mc; | |
1264 | ||
1265 | if (vd->vdev_islog && vd->vdev_alloc_bias == VDEV_BIAS_NONE) | |
1266 | vd->vdev_alloc_bias = VDEV_BIAS_LOG; | |
1267 | ||
1268 | ASSERT3U(vd->vdev_islog, ==, | |
1269 | (vd->vdev_alloc_bias == VDEV_BIAS_LOG)); | |
1270 | ||
1271 | switch (vd->vdev_alloc_bias) { | |
1272 | case VDEV_BIAS_LOG: | |
1273 | mc = spa_log_class(spa); | |
1274 | break; | |
1275 | case VDEV_BIAS_SPECIAL: | |
1276 | mc = spa_special_class(spa); | |
1277 | break; | |
1278 | case VDEV_BIAS_DEDUP: | |
1279 | mc = spa_dedup_class(spa); | |
1280 | break; | |
1281 | default: | |
1282 | mc = spa_normal_class(spa); | |
1283 | } | |
1284 | ||
1285 | vd->vdev_mg = metaslab_group_create(mc, vd, | |
1286 | spa->spa_alloc_count); | |
1287 | ||
1288 | /* | |
1289 | * The spa ashift values currently only reflect the | |
1290 | * general vdev classes. Class destination is late | |
1291 | * binding so ashift checking had to wait until now | |
1292 | */ | |
1293 | if (vd->vdev_top == vd && vd->vdev_ashift != 0 && | |
1294 | mc == spa_normal_class(spa) && vd->vdev_aux == NULL) { | |
1295 | if (vd->vdev_ashift > spa->spa_max_ashift) | |
1296 | spa->spa_max_ashift = vd->vdev_ashift; | |
1297 | if (vd->vdev_ashift < spa->spa_min_ashift) | |
1298 | spa->spa_min_ashift = vd->vdev_ashift; | |
1299 | } | |
1300 | } | |
1301 | } | |
1302 | ||
34dc7c2f BB |
1303 | int |
1304 | vdev_metaslab_init(vdev_t *vd, uint64_t txg) | |
1305 | { | |
1306 | spa_t *spa = vd->vdev_spa; | |
1307 | objset_t *mos = spa->spa_meta_objset; | |
34dc7c2f BB |
1308 | uint64_t m; |
1309 | uint64_t oldc = vd->vdev_ms_count; | |
1310 | uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift; | |
1311 | metaslab_t **mspp; | |
1312 | int error; | |
cc99f275 | 1313 | boolean_t expanding = (oldc != 0); |
34dc7c2f | 1314 | |
428870ff BB |
1315 | ASSERT(txg == 0 || spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
1316 | ||
1317 | /* | |
1318 | * This vdev is not being allocated from yet or is a hole. | |
1319 | */ | |
1320 | if (vd->vdev_ms_shift == 0) | |
34dc7c2f BB |
1321 | return (0); |
1322 | ||
428870ff BB |
1323 | ASSERT(!vd->vdev_ishole); |
1324 | ||
34dc7c2f BB |
1325 | ASSERT(oldc <= newc); |
1326 | ||
bffb68a2 | 1327 | mspp = vmem_zalloc(newc * sizeof (*mspp), KM_SLEEP); |
34dc7c2f | 1328 | |
cc99f275 | 1329 | if (expanding) { |
34dc7c2f | 1330 | bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp)); |
bffb68a2 | 1331 | vmem_free(vd->vdev_ms, oldc * sizeof (*mspp)); |
34dc7c2f BB |
1332 | } |
1333 | ||
1334 | vd->vdev_ms = mspp; | |
1335 | vd->vdev_ms_count = newc; | |
34dc7c2f | 1336 | for (m = oldc; m < newc; m++) { |
93cf2076 GW |
1337 | uint64_t object = 0; |
1338 | ||
a1d477c2 MA |
1339 | /* |
1340 | * vdev_ms_array may be 0 if we are creating the "fake" | |
1341 | * metaslabs for an indirect vdev for zdb's leak detection. | |
1342 | * See zdb_leak_init(). | |
1343 | */ | |
1344 | if (txg == 0 && vd->vdev_ms_array != 0) { | |
34dc7c2f | 1345 | error = dmu_read(mos, vd->vdev_ms_array, |
9babb374 BB |
1346 | m * sizeof (uint64_t), sizeof (uint64_t), &object, |
1347 | DMU_READ_PREFETCH); | |
4a0ee12a PZ |
1348 | if (error != 0) { |
1349 | vdev_dbgmsg(vd, "unable to read the metaslab " | |
1350 | "array [error=%d]", error); | |
34dc7c2f | 1351 | return (error); |
4a0ee12a | 1352 | } |
34dc7c2f | 1353 | } |
fb42a493 | 1354 | |
cc99f275 DB |
1355 | #ifndef _KERNEL |
1356 | /* | |
e1cfd73f | 1357 | * To accommodate zdb_leak_init() fake indirect |
cc99f275 DB |
1358 | * metaslabs, we allocate a metaslab group for |
1359 | * indirect vdevs which normally don't have one. | |
1360 | */ | |
1361 | if (vd->vdev_mg == NULL) { | |
1362 | ASSERT0(vdev_is_concrete(vd)); | |
1363 | vdev_metaslab_group_create(vd); | |
1364 | } | |
1365 | #endif | |
fb42a493 PS |
1366 | error = metaslab_init(vd->vdev_mg, m, object, txg, |
1367 | &(vd->vdev_ms[m])); | |
4a0ee12a PZ |
1368 | if (error != 0) { |
1369 | vdev_dbgmsg(vd, "metaslab_init failed [error=%d]", | |
1370 | error); | |
fb42a493 | 1371 | return (error); |
4a0ee12a | 1372 | } |
34dc7c2f BB |
1373 | } |
1374 | ||
428870ff BB |
1375 | if (txg == 0) |
1376 | spa_config_enter(spa, SCL_ALLOC, FTAG, RW_WRITER); | |
1377 | ||
1378 | /* | |
1379 | * If the vdev is being removed we don't activate | |
1380 | * the metaslabs since we want to ensure that no new | |
1381 | * allocations are performed on this device. | |
1382 | */ | |
cc99f275 | 1383 | if (!expanding && !vd->vdev_removing) { |
428870ff | 1384 | metaslab_group_activate(vd->vdev_mg); |
cc99f275 | 1385 | } |
428870ff BB |
1386 | |
1387 | if (txg == 0) | |
1388 | spa_config_exit(spa, SCL_ALLOC, FTAG); | |
1389 | ||
93e28d66 SD |
1390 | /* |
1391 | * Regardless whether this vdev was just added or it is being | |
1392 | * expanded, the metaslab count has changed. Recalculate the | |
1393 | * block limit. | |
1394 | */ | |
1395 | spa_log_sm_set_blocklimit(spa); | |
1396 | ||
34dc7c2f BB |
1397 | return (0); |
1398 | } | |
1399 | ||
1400 | void | |
1401 | vdev_metaslab_fini(vdev_t *vd) | |
1402 | { | |
d2734cce SD |
1403 | if (vd->vdev_checkpoint_sm != NULL) { |
1404 | ASSERT(spa_feature_is_active(vd->vdev_spa, | |
1405 | SPA_FEATURE_POOL_CHECKPOINT)); | |
1406 | space_map_close(vd->vdev_checkpoint_sm); | |
1407 | /* | |
1408 | * Even though we close the space map, we need to set its | |
1409 | * pointer to NULL. The reason is that vdev_metaslab_fini() | |
1410 | * may be called multiple times for certain operations | |
1411 | * (i.e. when destroying a pool) so we need to ensure that | |
1412 | * this clause never executes twice. This logic is similar | |
1413 | * to the one used for the vdev_ms clause below. | |
1414 | */ | |
1415 | vd->vdev_checkpoint_sm = NULL; | |
1416 | } | |
1417 | ||
34dc7c2f | 1418 | if (vd->vdev_ms != NULL) { |
928e8ad4 SD |
1419 | metaslab_group_t *mg = vd->vdev_mg; |
1420 | metaslab_group_passivate(mg); | |
a1d477c2 | 1421 | |
928e8ad4 | 1422 | uint64_t count = vd->vdev_ms_count; |
a1d477c2 | 1423 | for (uint64_t m = 0; m < count; m++) { |
93cf2076 | 1424 | metaslab_t *msp = vd->vdev_ms[m]; |
93cf2076 GW |
1425 | if (msp != NULL) |
1426 | metaslab_fini(msp); | |
1427 | } | |
bffb68a2 | 1428 | vmem_free(vd->vdev_ms, count * sizeof (metaslab_t *)); |
34dc7c2f | 1429 | vd->vdev_ms = NULL; |
920dd524 | 1430 | |
a1d477c2 | 1431 | vd->vdev_ms_count = 0; |
928e8ad4 SD |
1432 | |
1433 | for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) | |
1434 | ASSERT0(mg->mg_histogram[i]); | |
a1d477c2 MA |
1435 | } |
1436 | ASSERT0(vd->vdev_ms_count); | |
920dd524 | 1437 | ASSERT3U(vd->vdev_pending_fastwrite, ==, 0); |
34dc7c2f BB |
1438 | } |
1439 | ||
b128c09f BB |
1440 | typedef struct vdev_probe_stats { |
1441 | boolean_t vps_readable; | |
1442 | boolean_t vps_writeable; | |
1443 | int vps_flags; | |
b128c09f BB |
1444 | } vdev_probe_stats_t; |
1445 | ||
1446 | static void | |
1447 | vdev_probe_done(zio_t *zio) | |
34dc7c2f | 1448 | { |
fb5f0bc8 | 1449 | spa_t *spa = zio->io_spa; |
d164b209 | 1450 | vdev_t *vd = zio->io_vd; |
b128c09f | 1451 | vdev_probe_stats_t *vps = zio->io_private; |
d164b209 BB |
1452 | |
1453 | ASSERT(vd->vdev_probe_zio != NULL); | |
b128c09f BB |
1454 | |
1455 | if (zio->io_type == ZIO_TYPE_READ) { | |
b128c09f BB |
1456 | if (zio->io_error == 0) |
1457 | vps->vps_readable = 1; | |
fb5f0bc8 | 1458 | if (zio->io_error == 0 && spa_writeable(spa)) { |
d164b209 | 1459 | zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd, |
a6255b7f | 1460 | zio->io_offset, zio->io_size, zio->io_abd, |
b128c09f BB |
1461 | ZIO_CHECKSUM_OFF, vdev_probe_done, vps, |
1462 | ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE)); | |
1463 | } else { | |
a6255b7f | 1464 | abd_free(zio->io_abd); |
b128c09f BB |
1465 | } |
1466 | } else if (zio->io_type == ZIO_TYPE_WRITE) { | |
b128c09f BB |
1467 | if (zio->io_error == 0) |
1468 | vps->vps_writeable = 1; | |
a6255b7f | 1469 | abd_free(zio->io_abd); |
b128c09f | 1470 | } else if (zio->io_type == ZIO_TYPE_NULL) { |
d164b209 | 1471 | zio_t *pio; |
3dfb57a3 | 1472 | zio_link_t *zl; |
b128c09f BB |
1473 | |
1474 | vd->vdev_cant_read |= !vps->vps_readable; | |
1475 | vd->vdev_cant_write |= !vps->vps_writeable; | |
1476 | ||
1477 | if (vdev_readable(vd) && | |
fb5f0bc8 | 1478 | (vdev_writeable(vd) || !spa_writeable(spa))) { |
b128c09f BB |
1479 | zio->io_error = 0; |
1480 | } else { | |
1481 | ASSERT(zio->io_error != 0); | |
4a0ee12a | 1482 | vdev_dbgmsg(vd, "failed probe"); |
1144586b | 1483 | (void) zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE, |
4f072827 | 1484 | spa, vd, NULL, NULL, 0); |
2e528b49 | 1485 | zio->io_error = SET_ERROR(ENXIO); |
b128c09f | 1486 | } |
d164b209 BB |
1487 | |
1488 | mutex_enter(&vd->vdev_probe_lock); | |
1489 | ASSERT(vd->vdev_probe_zio == zio); | |
1490 | vd->vdev_probe_zio = NULL; | |
1491 | mutex_exit(&vd->vdev_probe_lock); | |
1492 | ||
3dfb57a3 DB |
1493 | zl = NULL; |
1494 | while ((pio = zio_walk_parents(zio, &zl)) != NULL) | |
d164b209 | 1495 | if (!vdev_accessible(vd, pio)) |
2e528b49 | 1496 | pio->io_error = SET_ERROR(ENXIO); |
d164b209 | 1497 | |
b128c09f BB |
1498 | kmem_free(vps, sizeof (*vps)); |
1499 | } | |
1500 | } | |
34dc7c2f | 1501 | |
b128c09f | 1502 | /* |
d3cc8b15 WA |
1503 | * Determine whether this device is accessible. |
1504 | * | |
1505 | * Read and write to several known locations: the pad regions of each | |
1506 | * vdev label but the first, which we leave alone in case it contains | |
1507 | * a VTOC. | |
b128c09f BB |
1508 | */ |
1509 | zio_t * | |
d164b209 | 1510 | vdev_probe(vdev_t *vd, zio_t *zio) |
b128c09f BB |
1511 | { |
1512 | spa_t *spa = vd->vdev_spa; | |
d164b209 BB |
1513 | vdev_probe_stats_t *vps = NULL; |
1514 | zio_t *pio; | |
1515 | ||
1516 | ASSERT(vd->vdev_ops->vdev_op_leaf); | |
34dc7c2f | 1517 | |
d164b209 BB |
1518 | /* |
1519 | * Don't probe the probe. | |
1520 | */ | |
1521 | if (zio && (zio->io_flags & ZIO_FLAG_PROBE)) | |
1522 | return (NULL); | |
b128c09f | 1523 | |
d164b209 BB |
1524 | /* |
1525 | * To prevent 'probe storms' when a device fails, we create | |
1526 | * just one probe i/o at a time. All zios that want to probe | |
1527 | * this vdev will become parents of the probe io. | |
1528 | */ | |
1529 | mutex_enter(&vd->vdev_probe_lock); | |
b128c09f | 1530 | |
d164b209 | 1531 | if ((pio = vd->vdev_probe_zio) == NULL) { |
79c76d5b | 1532 | vps = kmem_zalloc(sizeof (*vps), KM_SLEEP); |
d164b209 BB |
1533 | |
1534 | vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE | | |
1535 | ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE | | |
9babb374 | 1536 | ZIO_FLAG_TRYHARD; |
d164b209 BB |
1537 | |
1538 | if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) { | |
1539 | /* | |
1540 | * vdev_cant_read and vdev_cant_write can only | |
1541 | * transition from TRUE to FALSE when we have the | |
1542 | * SCL_ZIO lock as writer; otherwise they can only | |
1543 | * transition from FALSE to TRUE. This ensures that | |
1544 | * any zio looking at these values can assume that | |
1545 | * failures persist for the life of the I/O. That's | |
1546 | * important because when a device has intermittent | |
1547 | * connectivity problems, we want to ensure that | |
1548 | * they're ascribed to the device (ENXIO) and not | |
1549 | * the zio (EIO). | |
1550 | * | |
1551 | * Since we hold SCL_ZIO as writer here, clear both | |
1552 | * values so the probe can reevaluate from first | |
1553 | * principles. | |
1554 | */ | |
1555 | vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER; | |
1556 | vd->vdev_cant_read = B_FALSE; | |
1557 | vd->vdev_cant_write = B_FALSE; | |
1558 | } | |
1559 | ||
1560 | vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd, | |
1561 | vdev_probe_done, vps, | |
1562 | vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE); | |
1563 | ||
428870ff BB |
1564 | /* |
1565 | * We can't change the vdev state in this context, so we | |
1566 | * kick off an async task to do it on our behalf. | |
1567 | */ | |
d164b209 BB |
1568 | if (zio != NULL) { |
1569 | vd->vdev_probe_wanted = B_TRUE; | |
1570 | spa_async_request(spa, SPA_ASYNC_PROBE); | |
1571 | } | |
b128c09f BB |
1572 | } |
1573 | ||
d164b209 BB |
1574 | if (zio != NULL) |
1575 | zio_add_child(zio, pio); | |
b128c09f | 1576 | |
d164b209 | 1577 | mutex_exit(&vd->vdev_probe_lock); |
b128c09f | 1578 | |
d164b209 BB |
1579 | if (vps == NULL) { |
1580 | ASSERT(zio != NULL); | |
1581 | return (NULL); | |
1582 | } | |
b128c09f | 1583 | |
1c27024e | 1584 | for (int l = 1; l < VDEV_LABELS; l++) { |
d164b209 | 1585 | zio_nowait(zio_read_phys(pio, vd, |
b128c09f | 1586 | vdev_label_offset(vd->vdev_psize, l, |
108a454a | 1587 | offsetof(vdev_label_t, vl_be)), VDEV_PAD_SIZE, |
a6255b7f | 1588 | abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE), |
b128c09f BB |
1589 | ZIO_CHECKSUM_OFF, vdev_probe_done, vps, |
1590 | ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE)); | |
1591 | } | |
1592 | ||
d164b209 BB |
1593 | if (zio == NULL) |
1594 | return (pio); | |
1595 | ||
1596 | zio_nowait(pio); | |
1597 | return (NULL); | |
34dc7c2f BB |
1598 | } |
1599 | ||
45d1cae3 BB |
1600 | static void |
1601 | vdev_open_child(void *arg) | |
1602 | { | |
1603 | vdev_t *vd = arg; | |
1604 | ||
1605 | vd->vdev_open_thread = curthread; | |
1606 | vd->vdev_open_error = vdev_open(vd); | |
1607 | vd->vdev_open_thread = NULL; | |
1608 | } | |
1609 | ||
6c285672 | 1610 | static boolean_t |
428870ff BB |
1611 | vdev_uses_zvols(vdev_t *vd) |
1612 | { | |
6c285672 JL |
1613 | #ifdef _KERNEL |
1614 | if (zvol_is_zvol(vd->vdev_path)) | |
428870ff | 1615 | return (B_TRUE); |
6c285672 JL |
1616 | #endif |
1617 | ||
1c27024e | 1618 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
1619 | if (vdev_uses_zvols(vd->vdev_child[c])) |
1620 | return (B_TRUE); | |
6c285672 | 1621 | |
428870ff BB |
1622 | return (B_FALSE); |
1623 | } | |
1624 | ||
45d1cae3 BB |
1625 | void |
1626 | vdev_open_children(vdev_t *vd) | |
1627 | { | |
1628 | taskq_t *tq; | |
1629 | int children = vd->vdev_children; | |
1630 | ||
428870ff BB |
1631 | /* |
1632 | * in order to handle pools on top of zvols, do the opens | |
1633 | * in a single thread so that the same thread holds the | |
1634 | * spa_namespace_lock | |
1635 | */ | |
1636 | if (vdev_uses_zvols(vd)) { | |
13d9a004 | 1637 | retry_sync: |
1c27024e | 1638 | for (int c = 0; c < children; c++) |
428870ff BB |
1639 | vd->vdev_child[c]->vdev_open_error = |
1640 | vdev_open(vd->vdev_child[c]); | |
4770aa06 HJ |
1641 | } else { |
1642 | tq = taskq_create("vdev_open", children, minclsyspri, | |
1643 | children, children, TASKQ_PREPOPULATE); | |
13d9a004 BB |
1644 | if (tq == NULL) |
1645 | goto retry_sync; | |
45d1cae3 | 1646 | |
1c27024e | 1647 | for (int c = 0; c < children; c++) |
4770aa06 | 1648 | VERIFY(taskq_dispatch(tq, vdev_open_child, |
48d3eb40 | 1649 | vd->vdev_child[c], TQ_SLEEP) != TASKQID_INVALID); |
45d1cae3 | 1650 | |
4770aa06 HJ |
1651 | taskq_destroy(tq); |
1652 | } | |
1653 | ||
1654 | vd->vdev_nonrot = B_TRUE; | |
fb40095f | 1655 | |
1c27024e | 1656 | for (int c = 0; c < children; c++) |
fb40095f | 1657 | vd->vdev_nonrot &= vd->vdev_child[c]->vdev_nonrot; |
45d1cae3 BB |
1658 | } |
1659 | ||
a1d477c2 MA |
1660 | /* |
1661 | * Compute the raidz-deflation ratio. Note, we hard-code | |
1662 | * in 128k (1 << 17) because it is the "typical" blocksize. | |
1663 | * Even though SPA_MAXBLOCKSIZE changed, this algorithm can not change, | |
1664 | * otherwise it would inconsistently account for existing bp's. | |
1665 | */ | |
1666 | static void | |
1667 | vdev_set_deflate_ratio(vdev_t *vd) | |
1668 | { | |
1669 | if (vd == vd->vdev_top && !vd->vdev_ishole && vd->vdev_ashift != 0) { | |
1670 | vd->vdev_deflate_ratio = (1 << 17) / | |
1671 | (vdev_psize_to_asize(vd, 1 << 17) >> SPA_MINBLOCKSHIFT); | |
1672 | } | |
1673 | } | |
1674 | ||
c494aa7f GW |
1675 | /* |
1676 | * Maximize performance by inflating the configured ashift for top level | |
1677 | * vdevs to be as close to the physical ashift as possible while maintaining | |
1678 | * administrator defined limits and ensuring it doesn't go below the | |
1679 | * logical ashift. | |
1680 | */ | |
1681 | static void | |
1682 | vdev_ashift_optimize(vdev_t *vd) | |
1683 | { | |
1684 | ASSERT(vd == vd->vdev_top); | |
1685 | ||
1686 | if (vd->vdev_ashift < vd->vdev_physical_ashift) { | |
1687 | vd->vdev_ashift = MIN( | |
1688 | MAX(zfs_vdev_max_auto_ashift, vd->vdev_ashift), | |
1689 | MAX(zfs_vdev_min_auto_ashift, | |
1690 | vd->vdev_physical_ashift)); | |
1691 | } else { | |
1692 | /* | |
1693 | * If the logical and physical ashifts are the same, then | |
1694 | * we ensure that the top-level vdev's ashift is not smaller | |
1695 | * than our minimum ashift value. For the unusual case | |
1696 | * where logical ashift > physical ashift, we can't cap | |
1697 | * the calculated ashift based on max ashift as that | |
1698 | * would cause failures. | |
1699 | * We still check if we need to increase it to match | |
1700 | * the min ashift. | |
1701 | */ | |
1702 | vd->vdev_ashift = MAX(zfs_vdev_min_auto_ashift, | |
1703 | vd->vdev_ashift); | |
1704 | } | |
1705 | } | |
1706 | ||
34dc7c2f BB |
1707 | /* |
1708 | * Prepare a virtual device for access. | |
1709 | */ | |
1710 | int | |
1711 | vdev_open(vdev_t *vd) | |
1712 | { | |
fb5f0bc8 | 1713 | spa_t *spa = vd->vdev_spa; |
34dc7c2f | 1714 | int error; |
34dc7c2f | 1715 | uint64_t osize = 0; |
1bd201e7 CS |
1716 | uint64_t max_osize = 0; |
1717 | uint64_t asize, max_asize, psize; | |
6fe3498c RM |
1718 | uint64_t logical_ashift = 0; |
1719 | uint64_t physical_ashift = 0; | |
34dc7c2f | 1720 | |
45d1cae3 BB |
1721 | ASSERT(vd->vdev_open_thread == curthread || |
1722 | spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
34dc7c2f BB |
1723 | ASSERT(vd->vdev_state == VDEV_STATE_CLOSED || |
1724 | vd->vdev_state == VDEV_STATE_CANT_OPEN || | |
1725 | vd->vdev_state == VDEV_STATE_OFFLINE); | |
1726 | ||
34dc7c2f | 1727 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; |
9babb374 BB |
1728 | vd->vdev_cant_read = B_FALSE; |
1729 | vd->vdev_cant_write = B_FALSE; | |
1730 | vd->vdev_min_asize = vdev_get_min_asize(vd); | |
34dc7c2f | 1731 | |
428870ff BB |
1732 | /* |
1733 | * If this vdev is not removed, check its fault status. If it's | |
1734 | * faulted, bail out of the open. | |
1735 | */ | |
34dc7c2f BB |
1736 | if (!vd->vdev_removed && vd->vdev_faulted) { |
1737 | ASSERT(vd->vdev_children == 0); | |
428870ff BB |
1738 | ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || |
1739 | vd->vdev_label_aux == VDEV_AUX_EXTERNAL); | |
34dc7c2f | 1740 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, |
428870ff | 1741 | vd->vdev_label_aux); |
2e528b49 | 1742 | return (SET_ERROR(ENXIO)); |
34dc7c2f BB |
1743 | } else if (vd->vdev_offline) { |
1744 | ASSERT(vd->vdev_children == 0); | |
1745 | vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE); | |
2e528b49 | 1746 | return (SET_ERROR(ENXIO)); |
34dc7c2f BB |
1747 | } |
1748 | ||
6fe3498c RM |
1749 | error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize, |
1750 | &logical_ashift, &physical_ashift); | |
0c637f31 | 1751 | /* |
1752 | * Physical volume size should never be larger than its max size, unless | |
1753 | * the disk has shrunk while we were reading it or the device is buggy | |
1754 | * or damaged: either way it's not safe for use, bail out of the open. | |
1755 | */ | |
1756 | if (osize > max_osize) { | |
1757 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1758 | VDEV_AUX_OPEN_FAILED); | |
1759 | return (SET_ERROR(ENXIO)); | |
1760 | } | |
1761 | ||
428870ff BB |
1762 | /* |
1763 | * Reset the vdev_reopening flag so that we actually close | |
1764 | * the vdev on error. | |
1765 | */ | |
1766 | vd->vdev_reopening = B_FALSE; | |
34dc7c2f | 1767 | if (zio_injection_enabled && error == 0) |
28caa74b | 1768 | error = zio_handle_device_injection(vd, NULL, SET_ERROR(ENXIO)); |
34dc7c2f BB |
1769 | |
1770 | if (error) { | |
1771 | if (vd->vdev_removed && | |
1772 | vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED) | |
1773 | vd->vdev_removed = B_FALSE; | |
1774 | ||
6cb8e530 PZ |
1775 | if (vd->vdev_stat.vs_aux == VDEV_AUX_CHILDREN_OFFLINE) { |
1776 | vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, | |
1777 | vd->vdev_stat.vs_aux); | |
1778 | } else { | |
1779 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1780 | vd->vdev_stat.vs_aux); | |
1781 | } | |
34dc7c2f BB |
1782 | return (error); |
1783 | } | |
1784 | ||
1785 | vd->vdev_removed = B_FALSE; | |
1786 | ||
428870ff BB |
1787 | /* |
1788 | * Recheck the faulted flag now that we have confirmed that | |
1789 | * the vdev is accessible. If we're faulted, bail. | |
1790 | */ | |
1791 | if (vd->vdev_faulted) { | |
1792 | ASSERT(vd->vdev_children == 0); | |
1793 | ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || | |
1794 | vd->vdev_label_aux == VDEV_AUX_EXTERNAL); | |
1795 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, | |
1796 | vd->vdev_label_aux); | |
2e528b49 | 1797 | return (SET_ERROR(ENXIO)); |
428870ff BB |
1798 | } |
1799 | ||
34dc7c2f BB |
1800 | if (vd->vdev_degraded) { |
1801 | ASSERT(vd->vdev_children == 0); | |
1802 | vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, | |
1803 | VDEV_AUX_ERR_EXCEEDED); | |
1804 | } else { | |
428870ff | 1805 | vdev_set_state(vd, B_TRUE, VDEV_STATE_HEALTHY, 0); |
34dc7c2f BB |
1806 | } |
1807 | ||
428870ff BB |
1808 | /* |
1809 | * For hole or missing vdevs we just return success. | |
1810 | */ | |
1811 | if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) | |
1812 | return (0); | |
1813 | ||
1c27024e | 1814 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
1815 | if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) { |
1816 | vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, | |
1817 | VDEV_AUX_NONE); | |
1818 | break; | |
1819 | } | |
9babb374 | 1820 | } |
34dc7c2f BB |
1821 | |
1822 | osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t)); | |
1bd201e7 | 1823 | max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t)); |
34dc7c2f BB |
1824 | |
1825 | if (vd->vdev_children == 0) { | |
1826 | if (osize < SPA_MINDEVSIZE) { | |
1827 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1828 | VDEV_AUX_TOO_SMALL); | |
2e528b49 | 1829 | return (SET_ERROR(EOVERFLOW)); |
34dc7c2f BB |
1830 | } |
1831 | psize = osize; | |
1832 | asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE); | |
1bd201e7 CS |
1833 | max_asize = max_osize - (VDEV_LABEL_START_SIZE + |
1834 | VDEV_LABEL_END_SIZE); | |
34dc7c2f BB |
1835 | } else { |
1836 | if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE - | |
1837 | (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) { | |
1838 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1839 | VDEV_AUX_TOO_SMALL); | |
2e528b49 | 1840 | return (SET_ERROR(EOVERFLOW)); |
34dc7c2f BB |
1841 | } |
1842 | psize = 0; | |
1843 | asize = osize; | |
1bd201e7 | 1844 | max_asize = max_osize; |
34dc7c2f BB |
1845 | } |
1846 | ||
9d3f7b87 OF |
1847 | /* |
1848 | * If the vdev was expanded, record this so that we can re-create the | |
1849 | * uberblock rings in labels {2,3}, during the next sync. | |
1850 | */ | |
1851 | if ((psize > vd->vdev_psize) && (vd->vdev_psize != 0)) | |
1852 | vd->vdev_copy_uberblocks = B_TRUE; | |
1853 | ||
34dc7c2f BB |
1854 | vd->vdev_psize = psize; |
1855 | ||
9babb374 | 1856 | /* |
2e215fec | 1857 | * Make sure the allocatable size hasn't shrunk too much. |
9babb374 BB |
1858 | */ |
1859 | if (asize < vd->vdev_min_asize) { | |
1860 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1861 | VDEV_AUX_BAD_LABEL); | |
2e528b49 | 1862 | return (SET_ERROR(EINVAL)); |
9babb374 BB |
1863 | } |
1864 | ||
c494aa7f GW |
1865 | /* |
1866 | * We can always set the logical/physical ashift members since | |
1867 | * their values are only used to calculate the vdev_ashift when | |
1868 | * the device is first added to the config. These values should | |
1869 | * not be used for anything else since they may change whenever | |
1870 | * the device is reopened and we don't store them in the label. | |
1871 | */ | |
6fe3498c RM |
1872 | vd->vdev_physical_ashift = |
1873 | MAX(physical_ashift, vd->vdev_physical_ashift); | |
c494aa7f GW |
1874 | vd->vdev_logical_ashift = MAX(logical_ashift, |
1875 | vd->vdev_logical_ashift); | |
6fe3498c | 1876 | |
34dc7c2f BB |
1877 | if (vd->vdev_asize == 0) { |
1878 | /* | |
1879 | * This is the first-ever open, so use the computed values. | |
b28e57cb | 1880 | * For compatibility, a different ashift can be requested. |
34dc7c2f BB |
1881 | */ |
1882 | vd->vdev_asize = asize; | |
1bd201e7 | 1883 | vd->vdev_max_asize = max_asize; |
c494aa7f GW |
1884 | |
1885 | /* | |
1886 | * If the vdev_ashift was not overriden at creation time, | |
1887 | * then set it the logical ashift and optimize the ashift. | |
1888 | */ | |
1889 | if (vd->vdev_ashift == 0) { | |
1890 | vd->vdev_ashift = vd->vdev_logical_ashift; | |
1891 | ||
1892 | if (vd->vdev_logical_ashift > ASHIFT_MAX) { | |
1893 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1894 | VDEV_AUX_ASHIFT_TOO_BIG); | |
1895 | return (SET_ERROR(EDOM)); | |
1896 | } | |
1897 | ||
1898 | if (vd->vdev_top == vd) { | |
1899 | vdev_ashift_optimize(vd); | |
1900 | } | |
1901 | } | |
ff61d1a4 | 1902 | if (vd->vdev_ashift != 0 && (vd->vdev_ashift < ASHIFT_MIN || |
1903 | vd->vdev_ashift > ASHIFT_MAX)) { | |
1904 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1905 | VDEV_AUX_BAD_ASHIFT); | |
1906 | return (SET_ERROR(EDOM)); | |
1907 | } | |
34dc7c2f BB |
1908 | } else { |
1909 | /* | |
6fe3498c | 1910 | * Make sure the alignment required hasn't increased. |
34dc7c2f | 1911 | */ |
6fe3498c | 1912 | if (vd->vdev_ashift > vd->vdev_top->vdev_ashift && |
32a9872b | 1913 | vd->vdev_ops->vdev_op_leaf) { |
1144586b TS |
1914 | (void) zfs_ereport_post( |
1915 | FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT, | |
4f072827 | 1916 | spa, vd, NULL, NULL, 0); |
6fe3498c RM |
1917 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, |
1918 | VDEV_AUX_BAD_LABEL); | |
1919 | return (SET_ERROR(EDOM)); | |
6fe3498c | 1920 | } |
1bd201e7 | 1921 | vd->vdev_max_asize = max_asize; |
9babb374 | 1922 | } |
34dc7c2f | 1923 | |
9babb374 | 1924 | /* |
2e215fec SH |
1925 | * If all children are healthy we update asize if either: |
1926 | * The asize has increased, due to a device expansion caused by dynamic | |
1927 | * LUN growth or vdev replacement, and automatic expansion is enabled; | |
1928 | * making the additional space available. | |
1929 | * | |
1930 | * The asize has decreased, due to a device shrink usually caused by a | |
1931 | * vdev replace with a smaller device. This ensures that calculations | |
1932 | * based of max_asize and asize e.g. esize are always valid. It's safe | |
1933 | * to do this as we've already validated that asize is greater than | |
1934 | * vdev_min_asize. | |
9babb374 | 1935 | */ |
2e215fec SH |
1936 | if (vd->vdev_state == VDEV_STATE_HEALTHY && |
1937 | ((asize > vd->vdev_asize && | |
1938 | (vd->vdev_expanding || spa->spa_autoexpand)) || | |
1939 | (asize < vd->vdev_asize))) | |
9babb374 | 1940 | vd->vdev_asize = asize; |
34dc7c2f | 1941 | |
9babb374 | 1942 | vdev_set_min_asize(vd); |
34dc7c2f BB |
1943 | |
1944 | /* | |
1945 | * Ensure we can issue some IO before declaring the | |
1946 | * vdev open for business. | |
1947 | */ | |
b128c09f BB |
1948 | if (vd->vdev_ops->vdev_op_leaf && |
1949 | (error = zio_wait(vdev_probe(vd, NULL))) != 0) { | |
428870ff BB |
1950 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, |
1951 | VDEV_AUX_ERR_EXCEEDED); | |
34dc7c2f BB |
1952 | return (error); |
1953 | } | |
1954 | ||
c3520e7f MA |
1955 | /* |
1956 | * Track the min and max ashift values for normal data devices. | |
1957 | */ | |
1958 | if (vd->vdev_top == vd && vd->vdev_ashift != 0 && | |
cc99f275 | 1959 | vd->vdev_alloc_bias == VDEV_BIAS_NONE && |
1e724f4f | 1960 | vd->vdev_islog == 0 && vd->vdev_aux == NULL) { |
c3520e7f MA |
1961 | if (vd->vdev_ashift > spa->spa_max_ashift) |
1962 | spa->spa_max_ashift = vd->vdev_ashift; | |
1963 | if (vd->vdev_ashift < spa->spa_min_ashift) | |
1964 | spa->spa_min_ashift = vd->vdev_ashift; | |
1965 | } | |
1966 | ||
34dc7c2f | 1967 | /* |
3c819a2c JP |
1968 | * If this is a leaf vdev, assess whether a resilver is needed. |
1969 | * But don't do this if we are doing a reopen for a scrub, since | |
1970 | * this would just restart the scrub we are already doing. | |
34dc7c2f | 1971 | */ |
3c819a2c JP |
1972 | if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen) |
1973 | dsl_scan_assess_vdev(spa->spa_dsl_pool, vd); | |
34dc7c2f BB |
1974 | |
1975 | return (0); | |
1976 | } | |
1977 | ||
1978 | /* | |
1979 | * Called once the vdevs are all opened, this routine validates the label | |
6cb8e530 | 1980 | * contents. This needs to be done before vdev_load() so that we don't |
34dc7c2f BB |
1981 | * inadvertently do repair I/Os to the wrong device. |
1982 | * | |
1983 | * This function will only return failure if one of the vdevs indicates that it | |
1984 | * has since been destroyed or exported. This is only possible if | |
1985 | * /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state | |
1986 | * will be updated but the function will return 0. | |
1987 | */ | |
1988 | int | |
6cb8e530 | 1989 | vdev_validate(vdev_t *vd) |
34dc7c2f BB |
1990 | { |
1991 | spa_t *spa = vd->vdev_spa; | |
34dc7c2f | 1992 | nvlist_t *label; |
6cb8e530 | 1993 | uint64_t guid = 0, aux_guid = 0, top_guid; |
34dc7c2f | 1994 | uint64_t state; |
6cb8e530 PZ |
1995 | nvlist_t *nvl; |
1996 | uint64_t txg; | |
34dc7c2f | 1997 | |
6cb8e530 PZ |
1998 | if (vdev_validate_skip) |
1999 | return (0); | |
2000 | ||
2001 | for (uint64_t c = 0; c < vd->vdev_children; c++) | |
2002 | if (vdev_validate(vd->vdev_child[c]) != 0) | |
2e528b49 | 2003 | return (SET_ERROR(EBADF)); |
34dc7c2f BB |
2004 | |
2005 | /* | |
2006 | * If the device has already failed, or was marked offline, don't do | |
2007 | * any further validation. Otherwise, label I/O will fail and we will | |
2008 | * overwrite the previous state. | |
2009 | */ | |
6cb8e530 PZ |
2010 | if (!vd->vdev_ops->vdev_op_leaf || !vdev_readable(vd)) |
2011 | return (0); | |
34dc7c2f | 2012 | |
6cb8e530 PZ |
2013 | /* |
2014 | * If we are performing an extreme rewind, we allow for a label that | |
2015 | * was modified at a point after the current txg. | |
a11c7aae PZ |
2016 | * If config lock is not held do not check for the txg. spa_sync could |
2017 | * be updating the vdev's label before updating spa_last_synced_txg. | |
6cb8e530 | 2018 | */ |
a11c7aae PZ |
2019 | if (spa->spa_extreme_rewind || spa_last_synced_txg(spa) == 0 || |
2020 | spa_config_held(spa, SCL_CONFIG, RW_WRITER) != SCL_CONFIG) | |
6cb8e530 PZ |
2021 | txg = UINT64_MAX; |
2022 | else | |
2023 | txg = spa_last_synced_txg(spa); | |
34dc7c2f | 2024 | |
6cb8e530 PZ |
2025 | if ((label = vdev_label_read_config(vd, txg)) == NULL) { |
2026 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
2027 | VDEV_AUX_BAD_LABEL); | |
38a19edd PZ |
2028 | vdev_dbgmsg(vd, "vdev_validate: failed reading config for " |
2029 | "txg %llu", (u_longlong_t)txg); | |
6cb8e530 PZ |
2030 | return (0); |
2031 | } | |
428870ff | 2032 | |
6cb8e530 PZ |
2033 | /* |
2034 | * Determine if this vdev has been split off into another | |
2035 | * pool. If so, then refuse to open it. | |
2036 | */ | |
2037 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_SPLIT_GUID, | |
2038 | &aux_guid) == 0 && aux_guid == spa_guid(spa)) { | |
2039 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2040 | VDEV_AUX_SPLIT_POOL); | |
2041 | nvlist_free(label); | |
2042 | vdev_dbgmsg(vd, "vdev_validate: vdev split into other pool"); | |
2043 | return (0); | |
2044 | } | |
34dc7c2f | 2045 | |
6cb8e530 PZ |
2046 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID, &guid) != 0) { |
2047 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2048 | VDEV_AUX_CORRUPT_DATA); | |
2049 | nvlist_free(label); | |
2050 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", | |
2051 | ZPOOL_CONFIG_POOL_GUID); | |
2052 | return (0); | |
2053 | } | |
428870ff | 2054 | |
6cb8e530 PZ |
2055 | /* |
2056 | * If config is not trusted then ignore the spa guid check. This is | |
2057 | * necessary because if the machine crashed during a re-guid the new | |
2058 | * guid might have been written to all of the vdev labels, but not the | |
2059 | * cached config. The check will be performed again once we have the | |
2060 | * trusted config from the MOS. | |
2061 | */ | |
2062 | if (spa->spa_trust_config && guid != spa_guid(spa)) { | |
2063 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2064 | VDEV_AUX_CORRUPT_DATA); | |
2065 | nvlist_free(label); | |
2066 | vdev_dbgmsg(vd, "vdev_validate: vdev label pool_guid doesn't " | |
2067 | "match config (%llu != %llu)", (u_longlong_t)guid, | |
2068 | (u_longlong_t)spa_guid(spa)); | |
2069 | return (0); | |
2070 | } | |
2071 | ||
2072 | if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_VDEV_TREE, &nvl) | |
2073 | != 0 || nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_ORIG_GUID, | |
2074 | &aux_guid) != 0) | |
2075 | aux_guid = 0; | |
2076 | ||
2077 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0) { | |
2078 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2079 | VDEV_AUX_CORRUPT_DATA); | |
2080 | nvlist_free(label); | |
2081 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", | |
2082 | ZPOOL_CONFIG_GUID); | |
2083 | return (0); | |
2084 | } | |
2085 | ||
2086 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, &top_guid) | |
2087 | != 0) { | |
2088 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2089 | VDEV_AUX_CORRUPT_DATA); | |
2090 | nvlist_free(label); | |
2091 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", | |
2092 | ZPOOL_CONFIG_TOP_GUID); | |
2093 | return (0); | |
2094 | } | |
2095 | ||
2096 | /* | |
2097 | * If this vdev just became a top-level vdev because its sibling was | |
2098 | * detached, it will have adopted the parent's vdev guid -- but the | |
2099 | * label may or may not be on disk yet. Fortunately, either version | |
2100 | * of the label will have the same top guid, so if we're a top-level | |
2101 | * vdev, we can safely compare to that instead. | |
2102 | * However, if the config comes from a cachefile that failed to update | |
2103 | * after the detach, a top-level vdev will appear as a non top-level | |
2104 | * vdev in the config. Also relax the constraints if we perform an | |
2105 | * extreme rewind. | |
2106 | * | |
2107 | * If we split this vdev off instead, then we also check the | |
2108 | * original pool's guid. We don't want to consider the vdev | |
2109 | * corrupt if it is partway through a split operation. | |
2110 | */ | |
2111 | if (vd->vdev_guid != guid && vd->vdev_guid != aux_guid) { | |
2112 | boolean_t mismatch = B_FALSE; | |
2113 | if (spa->spa_trust_config && !spa->spa_extreme_rewind) { | |
2114 | if (vd != vd->vdev_top || vd->vdev_guid != top_guid) | |
2115 | mismatch = B_TRUE; | |
2116 | } else { | |
2117 | if (vd->vdev_guid != top_guid && | |
2118 | vd->vdev_top->vdev_guid != guid) | |
2119 | mismatch = B_TRUE; | |
34dc7c2f BB |
2120 | } |
2121 | ||
6cb8e530 | 2122 | if (mismatch) { |
34dc7c2f BB |
2123 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
2124 | VDEV_AUX_CORRUPT_DATA); | |
2125 | nvlist_free(label); | |
6cb8e530 PZ |
2126 | vdev_dbgmsg(vd, "vdev_validate: config guid " |
2127 | "doesn't match label guid"); | |
2128 | vdev_dbgmsg(vd, "CONFIG: guid %llu, top_guid %llu", | |
2129 | (u_longlong_t)vd->vdev_guid, | |
2130 | (u_longlong_t)vd->vdev_top->vdev_guid); | |
2131 | vdev_dbgmsg(vd, "LABEL: guid %llu, top_guid %llu, " | |
2132 | "aux_guid %llu", (u_longlong_t)guid, | |
2133 | (u_longlong_t)top_guid, (u_longlong_t)aux_guid); | |
34dc7c2f BB |
2134 | return (0); |
2135 | } | |
6cb8e530 | 2136 | } |
34dc7c2f | 2137 | |
6cb8e530 PZ |
2138 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, |
2139 | &state) != 0) { | |
2140 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2141 | VDEV_AUX_CORRUPT_DATA); | |
34dc7c2f | 2142 | nvlist_free(label); |
6cb8e530 PZ |
2143 | vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", |
2144 | ZPOOL_CONFIG_POOL_STATE); | |
2145 | return (0); | |
2146 | } | |
34dc7c2f | 2147 | |
6cb8e530 PZ |
2148 | nvlist_free(label); |
2149 | ||
2150 | /* | |
2151 | * If this is a verbatim import, no need to check the | |
2152 | * state of the pool. | |
2153 | */ | |
2154 | if (!(spa->spa_import_flags & ZFS_IMPORT_VERBATIM) && | |
2155 | spa_load_state(spa) == SPA_LOAD_OPEN && | |
2156 | state != POOL_STATE_ACTIVE) { | |
2157 | vdev_dbgmsg(vd, "vdev_validate: invalid pool state (%llu) " | |
2158 | "for spa %s", (u_longlong_t)state, spa->spa_name); | |
2159 | return (SET_ERROR(EBADF)); | |
2160 | } | |
2161 | ||
2162 | /* | |
2163 | * If we were able to open and validate a vdev that was | |
2164 | * previously marked permanently unavailable, clear that state | |
2165 | * now. | |
2166 | */ | |
2167 | if (vd->vdev_not_present) | |
2168 | vd->vdev_not_present = 0; | |
2169 | ||
2170 | return (0); | |
2171 | } | |
2172 | ||
2173 | static void | |
2174 | vdev_copy_path_impl(vdev_t *svd, vdev_t *dvd) | |
2175 | { | |
2176 | if (svd->vdev_path != NULL && dvd->vdev_path != NULL) { | |
2177 | if (strcmp(svd->vdev_path, dvd->vdev_path) != 0) { | |
2178 | zfs_dbgmsg("vdev_copy_path: vdev %llu: path changed " | |
2179 | "from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid, | |
2180 | dvd->vdev_path, svd->vdev_path); | |
2181 | spa_strfree(dvd->vdev_path); | |
2182 | dvd->vdev_path = spa_strdup(svd->vdev_path); | |
4a0ee12a | 2183 | } |
6cb8e530 PZ |
2184 | } else if (svd->vdev_path != NULL) { |
2185 | dvd->vdev_path = spa_strdup(svd->vdev_path); | |
2186 | zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'", | |
2187 | (u_longlong_t)dvd->vdev_guid, dvd->vdev_path); | |
2188 | } | |
2189 | } | |
34dc7c2f | 2190 | |
6cb8e530 PZ |
2191 | /* |
2192 | * Recursively copy vdev paths from one vdev to another. Source and destination | |
2193 | * vdev trees must have same geometry otherwise return error. Intended to copy | |
2194 | * paths from userland config into MOS config. | |
2195 | */ | |
2196 | int | |
2197 | vdev_copy_path_strict(vdev_t *svd, vdev_t *dvd) | |
2198 | { | |
2199 | if ((svd->vdev_ops == &vdev_missing_ops) || | |
2200 | (svd->vdev_ishole && dvd->vdev_ishole) || | |
2201 | (dvd->vdev_ops == &vdev_indirect_ops)) | |
2202 | return (0); | |
2203 | ||
2204 | if (svd->vdev_ops != dvd->vdev_ops) { | |
2205 | vdev_dbgmsg(svd, "vdev_copy_path: vdev type mismatch: %s != %s", | |
2206 | svd->vdev_ops->vdev_op_type, dvd->vdev_ops->vdev_op_type); | |
2207 | return (SET_ERROR(EINVAL)); | |
2208 | } | |
2209 | ||
2210 | if (svd->vdev_guid != dvd->vdev_guid) { | |
2211 | vdev_dbgmsg(svd, "vdev_copy_path: guids mismatch (%llu != " | |
2212 | "%llu)", (u_longlong_t)svd->vdev_guid, | |
2213 | (u_longlong_t)dvd->vdev_guid); | |
2214 | return (SET_ERROR(EINVAL)); | |
b128c09f | 2215 | } |
34dc7c2f | 2216 | |
6cb8e530 PZ |
2217 | if (svd->vdev_children != dvd->vdev_children) { |
2218 | vdev_dbgmsg(svd, "vdev_copy_path: children count mismatch: " | |
2219 | "%llu != %llu", (u_longlong_t)svd->vdev_children, | |
2220 | (u_longlong_t)dvd->vdev_children); | |
2221 | return (SET_ERROR(EINVAL)); | |
2222 | } | |
2223 | ||
2224 | for (uint64_t i = 0; i < svd->vdev_children; i++) { | |
2225 | int error = vdev_copy_path_strict(svd->vdev_child[i], | |
2226 | dvd->vdev_child[i]); | |
2227 | if (error != 0) | |
2228 | return (error); | |
2229 | } | |
2230 | ||
2231 | if (svd->vdev_ops->vdev_op_leaf) | |
2232 | vdev_copy_path_impl(svd, dvd); | |
2233 | ||
34dc7c2f BB |
2234 | return (0); |
2235 | } | |
2236 | ||
6cb8e530 PZ |
2237 | static void |
2238 | vdev_copy_path_search(vdev_t *stvd, vdev_t *dvd) | |
2239 | { | |
2240 | ASSERT(stvd->vdev_top == stvd); | |
2241 | ASSERT3U(stvd->vdev_id, ==, dvd->vdev_top->vdev_id); | |
2242 | ||
2243 | for (uint64_t i = 0; i < dvd->vdev_children; i++) { | |
2244 | vdev_copy_path_search(stvd, dvd->vdev_child[i]); | |
2245 | } | |
2246 | ||
2247 | if (!dvd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(dvd)) | |
2248 | return; | |
2249 | ||
2250 | /* | |
2251 | * The idea here is that while a vdev can shift positions within | |
2252 | * a top vdev (when replacing, attaching mirror, etc.) it cannot | |
2253 | * step outside of it. | |
2254 | */ | |
2255 | vdev_t *vd = vdev_lookup_by_guid(stvd, dvd->vdev_guid); | |
2256 | ||
2257 | if (vd == NULL || vd->vdev_ops != dvd->vdev_ops) | |
2258 | return; | |
2259 | ||
2260 | ASSERT(vd->vdev_ops->vdev_op_leaf); | |
2261 | ||
2262 | vdev_copy_path_impl(vd, dvd); | |
2263 | } | |
2264 | ||
2265 | /* | |
2266 | * Recursively copy vdev paths from one root vdev to another. Source and | |
2267 | * destination vdev trees may differ in geometry. For each destination leaf | |
2268 | * vdev, search a vdev with the same guid and top vdev id in the source. | |
2269 | * Intended to copy paths from userland config into MOS config. | |
2270 | */ | |
2271 | void | |
2272 | vdev_copy_path_relaxed(vdev_t *srvd, vdev_t *drvd) | |
2273 | { | |
2274 | uint64_t children = MIN(srvd->vdev_children, drvd->vdev_children); | |
2275 | ASSERT(srvd->vdev_ops == &vdev_root_ops); | |
2276 | ASSERT(drvd->vdev_ops == &vdev_root_ops); | |
2277 | ||
2278 | for (uint64_t i = 0; i < children; i++) { | |
2279 | vdev_copy_path_search(srvd->vdev_child[i], | |
2280 | drvd->vdev_child[i]); | |
2281 | } | |
2282 | } | |
2283 | ||
34dc7c2f BB |
2284 | /* |
2285 | * Close a virtual device. | |
2286 | */ | |
2287 | void | |
2288 | vdev_close(vdev_t *vd) | |
2289 | { | |
428870ff | 2290 | vdev_t *pvd = vd->vdev_parent; |
2a8ba608 | 2291 | spa_t *spa __maybe_unused = vd->vdev_spa; |
fb5f0bc8 BB |
2292 | |
2293 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
2294 | ||
428870ff BB |
2295 | /* |
2296 | * If our parent is reopening, then we are as well, unless we are | |
2297 | * going offline. | |
2298 | */ | |
2299 | if (pvd != NULL && pvd->vdev_reopening) | |
2300 | vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline); | |
2301 | ||
34dc7c2f BB |
2302 | vd->vdev_ops->vdev_op_close(vd); |
2303 | ||
2304 | vdev_cache_purge(vd); | |
2305 | ||
2306 | /* | |
9babb374 | 2307 | * We record the previous state before we close it, so that if we are |
34dc7c2f BB |
2308 | * doing a reopen(), we don't generate FMA ereports if we notice that |
2309 | * it's still faulted. | |
2310 | */ | |
2311 | vd->vdev_prevstate = vd->vdev_state; | |
2312 | ||
2313 | if (vd->vdev_offline) | |
2314 | vd->vdev_state = VDEV_STATE_OFFLINE; | |
2315 | else | |
2316 | vd->vdev_state = VDEV_STATE_CLOSED; | |
2317 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; | |
2318 | } | |
2319 | ||
428870ff BB |
2320 | void |
2321 | vdev_hold(vdev_t *vd) | |
2322 | { | |
2323 | spa_t *spa = vd->vdev_spa; | |
2324 | ||
2325 | ASSERT(spa_is_root(spa)); | |
2326 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) | |
2327 | return; | |
2328 | ||
1c27024e | 2329 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
2330 | vdev_hold(vd->vdev_child[c]); |
2331 | ||
2332 | if (vd->vdev_ops->vdev_op_leaf) | |
2333 | vd->vdev_ops->vdev_op_hold(vd); | |
2334 | } | |
2335 | ||
2336 | void | |
2337 | vdev_rele(vdev_t *vd) | |
2338 | { | |
d6320ddb | 2339 | ASSERT(spa_is_root(vd->vdev_spa)); |
1c27024e | 2340 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
2341 | vdev_rele(vd->vdev_child[c]); |
2342 | ||
2343 | if (vd->vdev_ops->vdev_op_leaf) | |
2344 | vd->vdev_ops->vdev_op_rele(vd); | |
2345 | } | |
2346 | ||
2347 | /* | |
2348 | * Reopen all interior vdevs and any unopened leaves. We don't actually | |
2349 | * reopen leaf vdevs which had previously been opened as they might deadlock | |
2350 | * on the spa_config_lock. Instead we only obtain the leaf's physical size. | |
2351 | * If the leaf has never been opened then open it, as usual. | |
2352 | */ | |
34dc7c2f BB |
2353 | void |
2354 | vdev_reopen(vdev_t *vd) | |
2355 | { | |
2356 | spa_t *spa = vd->vdev_spa; | |
2357 | ||
b128c09f | 2358 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); |
34dc7c2f | 2359 | |
428870ff BB |
2360 | /* set the reopening flag unless we're taking the vdev offline */ |
2361 | vd->vdev_reopening = !vd->vdev_offline; | |
34dc7c2f BB |
2362 | vdev_close(vd); |
2363 | (void) vdev_open(vd); | |
2364 | ||
2365 | /* | |
2366 | * Call vdev_validate() here to make sure we have the same device. | |
2367 | * Otherwise, a device with an invalid label could be successfully | |
2368 | * opened in response to vdev_reopen(). | |
2369 | */ | |
b128c09f BB |
2370 | if (vd->vdev_aux) { |
2371 | (void) vdev_validate_aux(vd); | |
2372 | if (vdev_readable(vd) && vdev_writeable(vd) && | |
77f6826b GA |
2373 | vd->vdev_aux == &spa->spa_l2cache) { |
2374 | /* | |
77f6826b GA |
2375 | * In case the vdev is present we should evict all ARC |
2376 | * buffers and pointers to log blocks and reclaim their | |
2377 | * space before restoring its contents to L2ARC. | |
2378 | */ | |
2379 | if (l2arc_vdev_present(vd)) { | |
2380 | l2arc_rebuild_vdev(vd, B_TRUE); | |
2381 | } else { | |
2382 | l2arc_add_vdev(spa, vd); | |
2383 | } | |
2384 | spa_async_request(spa, SPA_ASYNC_L2CACHE_REBUILD); | |
b7654bd7 | 2385 | spa_async_request(spa, SPA_ASYNC_L2CACHE_TRIM); |
77f6826b | 2386 | } |
b128c09f | 2387 | } else { |
6cb8e530 | 2388 | (void) vdev_validate(vd); |
b128c09f | 2389 | } |
34dc7c2f BB |
2390 | |
2391 | /* | |
2392 | * Reassess parent vdev's health. | |
2393 | */ | |
2394 | vdev_propagate_state(vd); | |
2395 | } | |
2396 | ||
2397 | int | |
2398 | vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing) | |
2399 | { | |
2400 | int error; | |
2401 | ||
2402 | /* | |
2403 | * Normally, partial opens (e.g. of a mirror) are allowed. | |
2404 | * For a create, however, we want to fail the request if | |
2405 | * there are any components we can't open. | |
2406 | */ | |
2407 | error = vdev_open(vd); | |
2408 | ||
2409 | if (error || vd->vdev_state != VDEV_STATE_HEALTHY) { | |
2410 | vdev_close(vd); | |
28caa74b | 2411 | return (error ? error : SET_ERROR(ENXIO)); |
34dc7c2f BB |
2412 | } |
2413 | ||
2414 | /* | |
93cf2076 | 2415 | * Recursively load DTLs and initialize all labels. |
34dc7c2f | 2416 | */ |
93cf2076 GW |
2417 | if ((error = vdev_dtl_load(vd)) != 0 || |
2418 | (error = vdev_label_init(vd, txg, isreplacing ? | |
34dc7c2f BB |
2419 | VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) { |
2420 | vdev_close(vd); | |
2421 | return (error); | |
2422 | } | |
2423 | ||
2424 | return (0); | |
2425 | } | |
2426 | ||
34dc7c2f | 2427 | void |
9babb374 | 2428 | vdev_metaslab_set_size(vdev_t *vd) |
34dc7c2f | 2429 | { |
d2734cce | 2430 | uint64_t asize = vd->vdev_asize; |
c853f382 | 2431 | uint64_t ms_count = asize >> zfs_vdev_default_ms_shift; |
e4e94ca3 | 2432 | uint64_t ms_shift; |
d2734cce | 2433 | |
34dc7c2f | 2434 | /* |
e4e94ca3 DB |
2435 | * There are two dimensions to the metaslab sizing calculation: |
2436 | * the size of the metaslab and the count of metaslabs per vdev. | |
e4e94ca3 | 2437 | * |
c853f382 SD |
2438 | * The default values used below are a good balance between memory |
2439 | * usage (larger metaslab size means more memory needed for loaded | |
2440 | * metaslabs; more metaslabs means more memory needed for the | |
2441 | * metaslab_t structs), metaslab load time (larger metaslabs take | |
2442 | * longer to load), and metaslab sync time (more metaslabs means | |
2443 | * more time spent syncing all of them). | |
2444 | * | |
2445 | * In general, we aim for zfs_vdev_default_ms_count (200) metaslabs. | |
2446 | * The range of the dimensions are as follows: | |
2447 | * | |
2448 | * 2^29 <= ms_size <= 2^34 | |
e4e94ca3 DB |
2449 | * 16 <= ms_count <= 131,072 |
2450 | * | |
2451 | * On the lower end of vdev sizes, we aim for metaslabs sizes of | |
2452 | * at least 512MB (2^29) to minimize fragmentation effects when | |
2453 | * testing with smaller devices. However, the count constraint | |
2454 | * of at least 16 metaslabs will override this minimum size goal. | |
2455 | * | |
2456 | * On the upper end of vdev sizes, we aim for a maximum metaslab | |
c853f382 SD |
2457 | * size of 16GB. However, we will cap the total count to 2^17 |
2458 | * metaslabs to keep our memory footprint in check and let the | |
2459 | * metaslab size grow from there if that limit is hit. | |
e4e94ca3 DB |
2460 | * |
2461 | * The net effect of applying above constrains is summarized below. | |
2462 | * | |
c853f382 SD |
2463 | * vdev size metaslab count |
2464 | * --------------|----------------- | |
2465 | * < 8GB ~16 | |
2466 | * 8GB - 100GB one per 512MB | |
2467 | * 100GB - 3TB ~200 | |
2468 | * 3TB - 2PB one per 16GB | |
2469 | * > 2PB ~131,072 | |
2470 | * -------------------------------- | |
2471 | * | |
2472 | * Finally, note that all of the above calculate the initial | |
2473 | * number of metaslabs. Expanding a top-level vdev will result | |
2474 | * in additional metaslabs being allocated making it possible | |
2475 | * to exceed the zfs_vdev_ms_count_limit. | |
34dc7c2f | 2476 | */ |
d2734cce | 2477 | |
c853f382 SD |
2478 | if (ms_count < zfs_vdev_min_ms_count) |
2479 | ms_shift = highbit64(asize / zfs_vdev_min_ms_count); | |
2480 | else if (ms_count > zfs_vdev_default_ms_count) | |
2481 | ms_shift = highbit64(asize / zfs_vdev_default_ms_count); | |
e4e94ca3 | 2482 | else |
c853f382 | 2483 | ms_shift = zfs_vdev_default_ms_shift; |
e4e94ca3 DB |
2484 | |
2485 | if (ms_shift < SPA_MAXBLOCKSHIFT) { | |
2486 | ms_shift = SPA_MAXBLOCKSHIFT; | |
c853f382 SD |
2487 | } else if (ms_shift > zfs_vdev_max_ms_shift) { |
2488 | ms_shift = zfs_vdev_max_ms_shift; | |
e4e94ca3 | 2489 | /* cap the total count to constrain memory footprint */ |
c853f382 SD |
2490 | if ((asize >> ms_shift) > zfs_vdev_ms_count_limit) |
2491 | ms_shift = highbit64(asize / zfs_vdev_ms_count_limit); | |
d2734cce SD |
2492 | } |
2493 | ||
2494 | vd->vdev_ms_shift = ms_shift; | |
2495 | ASSERT3U(vd->vdev_ms_shift, >=, SPA_MAXBLOCKSHIFT); | |
34dc7c2f BB |
2496 | } |
2497 | ||
2498 | void | |
2499 | vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg) | |
2500 | { | |
2501 | ASSERT(vd == vd->vdev_top); | |
a1d477c2 MA |
2502 | /* indirect vdevs don't have metaslabs or dtls */ |
2503 | ASSERT(vdev_is_concrete(vd) || flags == 0); | |
34dc7c2f | 2504 | ASSERT(ISP2(flags)); |
572e2857 | 2505 | ASSERT(spa_writeable(vd->vdev_spa)); |
34dc7c2f BB |
2506 | |
2507 | if (flags & VDD_METASLAB) | |
2508 | (void) txg_list_add(&vd->vdev_ms_list, arg, txg); | |
2509 | ||
2510 | if (flags & VDD_DTL) | |
2511 | (void) txg_list_add(&vd->vdev_dtl_list, arg, txg); | |
2512 | ||
2513 | (void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg); | |
2514 | } | |
2515 | ||
93cf2076 GW |
2516 | void |
2517 | vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg) | |
2518 | { | |
1c27024e | 2519 | for (int c = 0; c < vd->vdev_children; c++) |
93cf2076 GW |
2520 | vdev_dirty_leaves(vd->vdev_child[c], flags, txg); |
2521 | ||
2522 | if (vd->vdev_ops->vdev_op_leaf) | |
2523 | vdev_dirty(vd->vdev_top, flags, vd, txg); | |
2524 | } | |
2525 | ||
fb5f0bc8 BB |
2526 | /* |
2527 | * DTLs. | |
2528 | * | |
2529 | * A vdev's DTL (dirty time log) is the set of transaction groups for which | |
428870ff | 2530 | * the vdev has less than perfect replication. There are four kinds of DTL: |
fb5f0bc8 BB |
2531 | * |
2532 | * DTL_MISSING: txgs for which the vdev has no valid copies of the data | |
2533 | * | |
2534 | * DTL_PARTIAL: txgs for which data is available, but not fully replicated | |
2535 | * | |
2536 | * DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon | |
2537 | * scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of | |
2538 | * txgs that was scrubbed. | |
2539 | * | |
2540 | * DTL_OUTAGE: txgs which cannot currently be read, whether due to | |
2541 | * persistent errors or just some device being offline. | |
2542 | * Unlike the other three, the DTL_OUTAGE map is not generally | |
2543 | * maintained; it's only computed when needed, typically to | |
2544 | * determine whether a device can be detached. | |
2545 | * | |
2546 | * For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device | |
2547 | * either has the data or it doesn't. | |
2548 | * | |
2549 | * For interior vdevs such as mirror and RAID-Z the picture is more complex. | |
2550 | * A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because | |
2551 | * if any child is less than fully replicated, then so is its parent. | |
2552 | * A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs, | |
2553 | * comprising only those txgs which appear in 'maxfaults' or more children; | |
2554 | * those are the txgs we don't have enough replication to read. For example, | |
2555 | * double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2); | |
2556 | * thus, its DTL_MISSING consists of the set of txgs that appear in more than | |
2557 | * two child DTL_MISSING maps. | |
2558 | * | |
2559 | * It should be clear from the above that to compute the DTLs and outage maps | |
2560 | * for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps. | |
2561 | * Therefore, that is all we keep on disk. When loading the pool, or after | |
2562 | * a configuration change, we generate all other DTLs from first principles. | |
2563 | */ | |
34dc7c2f | 2564 | void |
fb5f0bc8 | 2565 | vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) |
34dc7c2f | 2566 | { |
93cf2076 | 2567 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 BB |
2568 | |
2569 | ASSERT(t < DTL_TYPES); | |
2570 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
572e2857 | 2571 | ASSERT(spa_writeable(vd->vdev_spa)); |
fb5f0bc8 | 2572 | |
a1d477c2 | 2573 | mutex_enter(&vd->vdev_dtl_lock); |
93cf2076 GW |
2574 | if (!range_tree_contains(rt, txg, size)) |
2575 | range_tree_add(rt, txg, size); | |
a1d477c2 | 2576 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2577 | } |
2578 | ||
fb5f0bc8 BB |
2579 | boolean_t |
2580 | vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) | |
34dc7c2f | 2581 | { |
93cf2076 | 2582 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 | 2583 | boolean_t dirty = B_FALSE; |
34dc7c2f | 2584 | |
fb5f0bc8 BB |
2585 | ASSERT(t < DTL_TYPES); |
2586 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
34dc7c2f | 2587 | |
a1d477c2 MA |
2588 | /* |
2589 | * While we are loading the pool, the DTLs have not been loaded yet. | |
2590 | * Ignore the DTLs and try all devices. This avoids a recursive | |
2591 | * mutex enter on the vdev_dtl_lock, and also makes us try hard | |
2592 | * when loading the pool (relying on the checksum to ensure that | |
2593 | * we get the right data -- note that we while loading, we are | |
2594 | * only reading the MOS, which is always checksummed). | |
2595 | */ | |
2596 | if (vd->vdev_spa->spa_load_state != SPA_LOAD_NONE) | |
2597 | return (B_FALSE); | |
2598 | ||
2599 | mutex_enter(&vd->vdev_dtl_lock); | |
d2734cce | 2600 | if (!range_tree_is_empty(rt)) |
93cf2076 | 2601 | dirty = range_tree_contains(rt, txg, size); |
a1d477c2 | 2602 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2603 | |
2604 | return (dirty); | |
2605 | } | |
2606 | ||
fb5f0bc8 BB |
2607 | boolean_t |
2608 | vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t) | |
2609 | { | |
93cf2076 | 2610 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 BB |
2611 | boolean_t empty; |
2612 | ||
a1d477c2 | 2613 | mutex_enter(&vd->vdev_dtl_lock); |
d2734cce | 2614 | empty = range_tree_is_empty(rt); |
a1d477c2 | 2615 | mutex_exit(&vd->vdev_dtl_lock); |
fb5f0bc8 BB |
2616 | |
2617 | return (empty); | |
2618 | } | |
2619 | ||
3d6da72d IH |
2620 | /* |
2621 | * Returns B_TRUE if vdev determines offset needs to be resilvered. | |
2622 | */ | |
2623 | boolean_t | |
2624 | vdev_dtl_need_resilver(vdev_t *vd, uint64_t offset, size_t psize) | |
2625 | { | |
2626 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
2627 | ||
2628 | if (vd->vdev_ops->vdev_op_need_resilver == NULL || | |
2629 | vd->vdev_ops->vdev_op_leaf) | |
2630 | return (B_TRUE); | |
2631 | ||
2632 | return (vd->vdev_ops->vdev_op_need_resilver(vd, offset, psize)); | |
2633 | } | |
2634 | ||
5d1f7fb6 GW |
2635 | /* |
2636 | * Returns the lowest txg in the DTL range. | |
2637 | */ | |
2638 | static uint64_t | |
2639 | vdev_dtl_min(vdev_t *vd) | |
2640 | { | |
5d1f7fb6 | 2641 | ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); |
93cf2076 | 2642 | ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); |
5d1f7fb6 GW |
2643 | ASSERT0(vd->vdev_children); |
2644 | ||
ca577779 | 2645 | return (range_tree_min(vd->vdev_dtl[DTL_MISSING]) - 1); |
5d1f7fb6 GW |
2646 | } |
2647 | ||
2648 | /* | |
2649 | * Returns the highest txg in the DTL. | |
2650 | */ | |
2651 | static uint64_t | |
2652 | vdev_dtl_max(vdev_t *vd) | |
2653 | { | |
5d1f7fb6 | 2654 | ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); |
93cf2076 | 2655 | ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); |
5d1f7fb6 GW |
2656 | ASSERT0(vd->vdev_children); |
2657 | ||
ca577779 | 2658 | return (range_tree_max(vd->vdev_dtl[DTL_MISSING])); |
5d1f7fb6 GW |
2659 | } |
2660 | ||
2661 | /* | |
2662 | * Determine if a resilvering vdev should remove any DTL entries from | |
2663 | * its range. If the vdev was resilvering for the entire duration of the | |
2664 | * scan then it should excise that range from its DTLs. Otherwise, this | |
2665 | * vdev is considered partially resilvered and should leave its DTL | |
2666 | * entries intact. The comment in vdev_dtl_reassess() describes how we | |
2667 | * excise the DTLs. | |
2668 | */ | |
2669 | static boolean_t | |
9a49d3f3 | 2670 | vdev_dtl_should_excise(vdev_t *vd, boolean_t rebuild_done) |
5d1f7fb6 | 2671 | { |
5d1f7fb6 GW |
2672 | ASSERT0(vd->vdev_children); |
2673 | ||
335b251a MA |
2674 | if (vd->vdev_state < VDEV_STATE_DEGRADED) |
2675 | return (B_FALSE); | |
2676 | ||
80a91e74 TC |
2677 | if (vd->vdev_resilver_deferred) |
2678 | return (B_FALSE); | |
2679 | ||
9a49d3f3 | 2680 | if (range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) |
5d1f7fb6 GW |
2681 | return (B_TRUE); |
2682 | ||
9a49d3f3 BB |
2683 | if (rebuild_done) { |
2684 | vdev_rebuild_t *vr = &vd->vdev_top->vdev_rebuild_config; | |
2685 | vdev_rebuild_phys_t *vrp = &vr->vr_rebuild_phys; | |
2686 | ||
2687 | /* Rebuild not initiated by attach */ | |
2688 | if (vd->vdev_rebuild_txg == 0) | |
2689 | return (B_TRUE); | |
2690 | ||
2691 | /* | |
2692 | * When a rebuild completes without error then all missing data | |
2693 | * up to the rebuild max txg has been reconstructed and the DTL | |
2694 | * is eligible for excision. | |
2695 | */ | |
2696 | if (vrp->vrp_rebuild_state == VDEV_REBUILD_COMPLETE && | |
2697 | vdev_dtl_max(vd) <= vrp->vrp_max_txg) { | |
2698 | ASSERT3U(vrp->vrp_min_txg, <=, vdev_dtl_min(vd)); | |
2699 | ASSERT3U(vrp->vrp_min_txg, <, vd->vdev_rebuild_txg); | |
2700 | ASSERT3U(vd->vdev_rebuild_txg, <=, vrp->vrp_max_txg); | |
2701 | return (B_TRUE); | |
2702 | } | |
2703 | } else { | |
2704 | dsl_scan_t *scn = vd->vdev_spa->spa_dsl_pool->dp_scan; | |
2705 | dsl_scan_phys_t *scnp __maybe_unused = &scn->scn_phys; | |
2706 | ||
2707 | /* Resilver not initiated by attach */ | |
2708 | if (vd->vdev_resilver_txg == 0) | |
2709 | return (B_TRUE); | |
2710 | ||
2711 | /* | |
2712 | * When a resilver is initiated the scan will assign the | |
2713 | * scn_max_txg value to the highest txg value that exists | |
2714 | * in all DTLs. If this device's max DTL is not part of this | |
2715 | * scan (i.e. it is not in the range (scn_min_txg, scn_max_txg] | |
2716 | * then it is not eligible for excision. | |
2717 | */ | |
2718 | if (vdev_dtl_max(vd) <= scn->scn_phys.scn_max_txg) { | |
2719 | ASSERT3U(scnp->scn_min_txg, <=, vdev_dtl_min(vd)); | |
2720 | ASSERT3U(scnp->scn_min_txg, <, vd->vdev_resilver_txg); | |
2721 | ASSERT3U(vd->vdev_resilver_txg, <=, scnp->scn_max_txg); | |
2722 | return (B_TRUE); | |
2723 | } | |
5d1f7fb6 | 2724 | } |
9a49d3f3 | 2725 | |
5d1f7fb6 GW |
2726 | return (B_FALSE); |
2727 | } | |
2728 | ||
34dc7c2f | 2729 | /* |
fde25c0a TC |
2730 | * Reassess DTLs after a config change or scrub completion. If txg == 0 no |
2731 | * write operations will be issued to the pool. | |
34dc7c2f BB |
2732 | */ |
2733 | void | |
9a49d3f3 BB |
2734 | vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, |
2735 | boolean_t scrub_done, boolean_t rebuild_done) | |
34dc7c2f BB |
2736 | { |
2737 | spa_t *spa = vd->vdev_spa; | |
fb5f0bc8 | 2738 | avl_tree_t reftree; |
1c27024e | 2739 | int minref; |
34dc7c2f | 2740 | |
fb5f0bc8 | 2741 | ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); |
34dc7c2f | 2742 | |
1c27024e | 2743 | for (int c = 0; c < vd->vdev_children; c++) |
fb5f0bc8 | 2744 | vdev_dtl_reassess(vd->vdev_child[c], txg, |
9a49d3f3 | 2745 | scrub_txg, scrub_done, rebuild_done); |
fb5f0bc8 | 2746 | |
a1d477c2 | 2747 | if (vd == spa->spa_root_vdev || !vdev_is_concrete(vd) || vd->vdev_aux) |
fb5f0bc8 BB |
2748 | return; |
2749 | ||
2750 | if (vd->vdev_ops->vdev_op_leaf) { | |
428870ff | 2751 | dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; |
9a49d3f3 BB |
2752 | vdev_rebuild_t *vr = &vd->vdev_top->vdev_rebuild_config; |
2753 | boolean_t check_excise = B_FALSE; | |
41035a04 | 2754 | boolean_t wasempty = B_TRUE; |
428870ff | 2755 | |
34dc7c2f | 2756 | mutex_enter(&vd->vdev_dtl_lock); |
5d1f7fb6 | 2757 | |
02638a30 | 2758 | /* |
9a49d3f3 | 2759 | * If requested, pretend the scan or rebuild completed cleanly. |
02638a30 | 2760 | */ |
9a49d3f3 BB |
2761 | if (zfs_scan_ignore_errors) { |
2762 | if (scn != NULL) | |
2763 | scn->scn_phys.scn_errors = 0; | |
2764 | if (vr != NULL) | |
2765 | vr->vr_rebuild_phys.vrp_errors = 0; | |
2766 | } | |
02638a30 | 2767 | |
41035a04 JP |
2768 | if (scrub_txg != 0 && |
2769 | !range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) { | |
2770 | wasempty = B_FALSE; | |
2771 | zfs_dbgmsg("guid:%llu txg:%llu scrub:%llu started:%d " | |
2772 | "dtl:%llu/%llu errors:%llu", | |
2773 | (u_longlong_t)vd->vdev_guid, (u_longlong_t)txg, | |
2774 | (u_longlong_t)scrub_txg, spa->spa_scrub_started, | |
2775 | (u_longlong_t)vdev_dtl_min(vd), | |
2776 | (u_longlong_t)vdev_dtl_max(vd), | |
2777 | (u_longlong_t)(scn ? scn->scn_phys.scn_errors : 0)); | |
2778 | } | |
2779 | ||
5d1f7fb6 | 2780 | /* |
9a49d3f3 BB |
2781 | * If we've completed a scrub/resilver or a rebuild cleanly |
2782 | * then determine if this vdev should remove any DTLs. We | |
2783 | * only want to excise regions on vdevs that were available | |
2784 | * during the entire duration of this scan. | |
5d1f7fb6 | 2785 | */ |
9a49d3f3 BB |
2786 | if (rebuild_done && |
2787 | vr != NULL && vr->vr_rebuild_phys.vrp_errors == 0) { | |
2788 | check_excise = B_TRUE; | |
2789 | } else { | |
2790 | if (spa->spa_scrub_started || | |
2791 | (scn != NULL && scn->scn_phys.scn_errors == 0)) { | |
2792 | check_excise = B_TRUE; | |
2793 | } | |
2794 | } | |
2795 | ||
2796 | if (scrub_txg && check_excise && | |
2797 | vdev_dtl_should_excise(vd, rebuild_done)) { | |
b128c09f | 2798 | /* |
9a49d3f3 BB |
2799 | * We completed a scrub, resilver or rebuild up to |
2800 | * scrub_txg. If we did it without rebooting, then | |
2801 | * the scrub dtl will be valid, so excise the old | |
2802 | * region and fold in the scrub dtl. Otherwise, | |
2803 | * leave the dtl as-is if there was an error. | |
fb5f0bc8 BB |
2804 | * |
2805 | * There's little trick here: to excise the beginning | |
2806 | * of the DTL_MISSING map, we put it into a reference | |
2807 | * tree and then add a segment with refcnt -1 that | |
2808 | * covers the range [0, scrub_txg). This means | |
2809 | * that each txg in that range has refcnt -1 or 0. | |
2810 | * We then add DTL_SCRUB with a refcnt of 2, so that | |
2811 | * entries in the range [0, scrub_txg) will have a | |
2812 | * positive refcnt -- either 1 or 2. We then convert | |
2813 | * the reference tree into the new DTL_MISSING map. | |
b128c09f | 2814 | */ |
93cf2076 GW |
2815 | space_reftree_create(&reftree); |
2816 | space_reftree_add_map(&reftree, | |
2817 | vd->vdev_dtl[DTL_MISSING], 1); | |
2818 | space_reftree_add_seg(&reftree, 0, scrub_txg, -1); | |
2819 | space_reftree_add_map(&reftree, | |
2820 | vd->vdev_dtl[DTL_SCRUB], 2); | |
2821 | space_reftree_generate_map(&reftree, | |
2822 | vd->vdev_dtl[DTL_MISSING], 1); | |
2823 | space_reftree_destroy(&reftree); | |
41035a04 JP |
2824 | |
2825 | if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) { | |
2826 | zfs_dbgmsg("update DTL_MISSING:%llu/%llu", | |
2827 | (u_longlong_t)vdev_dtl_min(vd), | |
2828 | (u_longlong_t)vdev_dtl_max(vd)); | |
2829 | } else if (!wasempty) { | |
2830 | zfs_dbgmsg("DTL_MISSING is now empty"); | |
2831 | } | |
34dc7c2f | 2832 | } |
93cf2076 GW |
2833 | range_tree_vacate(vd->vdev_dtl[DTL_PARTIAL], NULL, NULL); |
2834 | range_tree_walk(vd->vdev_dtl[DTL_MISSING], | |
2835 | range_tree_add, vd->vdev_dtl[DTL_PARTIAL]); | |
34dc7c2f | 2836 | if (scrub_done) |
93cf2076 GW |
2837 | range_tree_vacate(vd->vdev_dtl[DTL_SCRUB], NULL, NULL); |
2838 | range_tree_vacate(vd->vdev_dtl[DTL_OUTAGE], NULL, NULL); | |
fb5f0bc8 | 2839 | if (!vdev_readable(vd)) |
93cf2076 | 2840 | range_tree_add(vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL); |
fb5f0bc8 | 2841 | else |
93cf2076 GW |
2842 | range_tree_walk(vd->vdev_dtl[DTL_MISSING], |
2843 | range_tree_add, vd->vdev_dtl[DTL_OUTAGE]); | |
5d1f7fb6 GW |
2844 | |
2845 | /* | |
9a49d3f3 BB |
2846 | * If the vdev was resilvering or rebuilding and no longer |
2847 | * has any DTLs then reset the appropriate flag and dirty | |
d14fa5db | 2848 | * the top level so that we persist the change. |
5d1f7fb6 | 2849 | */ |
9a49d3f3 | 2850 | if (txg != 0 && |
d2734cce SD |
2851 | range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) && |
2852 | range_tree_is_empty(vd->vdev_dtl[DTL_OUTAGE])) { | |
9a49d3f3 BB |
2853 | if (vd->vdev_rebuild_txg != 0) { |
2854 | vd->vdev_rebuild_txg = 0; | |
2855 | vdev_config_dirty(vd->vdev_top); | |
2856 | } else if (vd->vdev_resilver_txg != 0) { | |
2857 | vd->vdev_resilver_txg = 0; | |
2858 | vdev_config_dirty(vd->vdev_top); | |
2859 | } | |
d14fa5db | 2860 | } |
5d1f7fb6 | 2861 | |
34dc7c2f | 2862 | mutex_exit(&vd->vdev_dtl_lock); |
b128c09f | 2863 | |
34dc7c2f BB |
2864 | if (txg != 0) |
2865 | vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg); | |
2866 | return; | |
2867 | } | |
2868 | ||
34dc7c2f | 2869 | mutex_enter(&vd->vdev_dtl_lock); |
1c27024e | 2870 | for (int t = 0; t < DTL_TYPES; t++) { |
428870ff BB |
2871 | /* account for child's outage in parent's missing map */ |
2872 | int s = (t == DTL_MISSING) ? DTL_OUTAGE: t; | |
fb5f0bc8 BB |
2873 | if (t == DTL_SCRUB) |
2874 | continue; /* leaf vdevs only */ | |
2875 | if (t == DTL_PARTIAL) | |
2876 | minref = 1; /* i.e. non-zero */ | |
2877 | else if (vd->vdev_nparity != 0) | |
2878 | minref = vd->vdev_nparity + 1; /* RAID-Z */ | |
2879 | else | |
2880 | minref = vd->vdev_children; /* any kind of mirror */ | |
93cf2076 | 2881 | space_reftree_create(&reftree); |
1c27024e | 2882 | for (int c = 0; c < vd->vdev_children; c++) { |
fb5f0bc8 BB |
2883 | vdev_t *cvd = vd->vdev_child[c]; |
2884 | mutex_enter(&cvd->vdev_dtl_lock); | |
93cf2076 | 2885 | space_reftree_add_map(&reftree, cvd->vdev_dtl[s], 1); |
fb5f0bc8 BB |
2886 | mutex_exit(&cvd->vdev_dtl_lock); |
2887 | } | |
93cf2076 GW |
2888 | space_reftree_generate_map(&reftree, vd->vdev_dtl[t], minref); |
2889 | space_reftree_destroy(&reftree); | |
34dc7c2f | 2890 | } |
fb5f0bc8 | 2891 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2892 | } |
2893 | ||
93cf2076 | 2894 | int |
34dc7c2f BB |
2895 | vdev_dtl_load(vdev_t *vd) |
2896 | { | |
2897 | spa_t *spa = vd->vdev_spa; | |
34dc7c2f | 2898 | objset_t *mos = spa->spa_meta_objset; |
93cf2076 | 2899 | int error = 0; |
34dc7c2f | 2900 | |
93cf2076 | 2901 | if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) { |
a1d477c2 | 2902 | ASSERT(vdev_is_concrete(vd)); |
34dc7c2f | 2903 | |
93cf2076 | 2904 | error = space_map_open(&vd->vdev_dtl_sm, mos, |
a1d477c2 | 2905 | vd->vdev_dtl_object, 0, -1ULL, 0); |
93cf2076 GW |
2906 | if (error) |
2907 | return (error); | |
2908 | ASSERT(vd->vdev_dtl_sm != NULL); | |
34dc7c2f | 2909 | |
93cf2076 | 2910 | mutex_enter(&vd->vdev_dtl_lock); |
93cf2076 GW |
2911 | error = space_map_load(vd->vdev_dtl_sm, |
2912 | vd->vdev_dtl[DTL_MISSING], SM_ALLOC); | |
2913 | mutex_exit(&vd->vdev_dtl_lock); | |
34dc7c2f | 2914 | |
93cf2076 GW |
2915 | return (error); |
2916 | } | |
2917 | ||
1c27024e | 2918 | for (int c = 0; c < vd->vdev_children; c++) { |
93cf2076 GW |
2919 | error = vdev_dtl_load(vd->vdev_child[c]); |
2920 | if (error != 0) | |
2921 | break; | |
2922 | } | |
34dc7c2f BB |
2923 | |
2924 | return (error); | |
2925 | } | |
2926 | ||
cc99f275 DB |
2927 | static void |
2928 | vdev_zap_allocation_data(vdev_t *vd, dmu_tx_t *tx) | |
2929 | { | |
2930 | spa_t *spa = vd->vdev_spa; | |
2931 | objset_t *mos = spa->spa_meta_objset; | |
2932 | vdev_alloc_bias_t alloc_bias = vd->vdev_alloc_bias; | |
2933 | const char *string; | |
2934 | ||
2935 | ASSERT(alloc_bias != VDEV_BIAS_NONE); | |
2936 | ||
2937 | string = | |
2938 | (alloc_bias == VDEV_BIAS_LOG) ? VDEV_ALLOC_BIAS_LOG : | |
2939 | (alloc_bias == VDEV_BIAS_SPECIAL) ? VDEV_ALLOC_BIAS_SPECIAL : | |
2940 | (alloc_bias == VDEV_BIAS_DEDUP) ? VDEV_ALLOC_BIAS_DEDUP : NULL; | |
2941 | ||
2942 | ASSERT(string != NULL); | |
2943 | VERIFY0(zap_add(mos, vd->vdev_top_zap, VDEV_TOP_ZAP_ALLOCATION_BIAS, | |
2944 | 1, strlen(string) + 1, string, tx)); | |
2945 | ||
2946 | if (alloc_bias == VDEV_BIAS_SPECIAL || alloc_bias == VDEV_BIAS_DEDUP) { | |
2947 | spa_activate_allocation_classes(spa, tx); | |
2948 | } | |
2949 | } | |
2950 | ||
e0ab3ab5 JS |
2951 | void |
2952 | vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, dmu_tx_t *tx) | |
2953 | { | |
2954 | spa_t *spa = vd->vdev_spa; | |
2955 | ||
2956 | VERIFY0(zap_destroy(spa->spa_meta_objset, zapobj, tx)); | |
2957 | VERIFY0(zap_remove_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, | |
2958 | zapobj, tx)); | |
2959 | } | |
2960 | ||
2961 | uint64_t | |
2962 | vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx) | |
2963 | { | |
2964 | spa_t *spa = vd->vdev_spa; | |
2965 | uint64_t zap = zap_create(spa->spa_meta_objset, DMU_OTN_ZAP_METADATA, | |
2966 | DMU_OT_NONE, 0, tx); | |
2967 | ||
2968 | ASSERT(zap != 0); | |
2969 | VERIFY0(zap_add_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, | |
2970 | zap, tx)); | |
2971 | ||
2972 | return (zap); | |
2973 | } | |
2974 | ||
2975 | void | |
2976 | vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx) | |
2977 | { | |
e0ab3ab5 JS |
2978 | if (vd->vdev_ops != &vdev_hole_ops && |
2979 | vd->vdev_ops != &vdev_missing_ops && | |
2980 | vd->vdev_ops != &vdev_root_ops && | |
2981 | !vd->vdev_top->vdev_removing) { | |
2982 | if (vd->vdev_ops->vdev_op_leaf && vd->vdev_leaf_zap == 0) { | |
2983 | vd->vdev_leaf_zap = vdev_create_link_zap(vd, tx); | |
2984 | } | |
2985 | if (vd == vd->vdev_top && vd->vdev_top_zap == 0) { | |
2986 | vd->vdev_top_zap = vdev_create_link_zap(vd, tx); | |
cc99f275 DB |
2987 | if (vd->vdev_alloc_bias != VDEV_BIAS_NONE) |
2988 | vdev_zap_allocation_data(vd, tx); | |
e0ab3ab5 JS |
2989 | } |
2990 | } | |
cc99f275 | 2991 | |
1c27024e | 2992 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
2993 | vdev_construct_zaps(vd->vdev_child[i], tx); |
2994 | } | |
2995 | } | |
2996 | ||
65c7cc49 | 2997 | static void |
34dc7c2f BB |
2998 | vdev_dtl_sync(vdev_t *vd, uint64_t txg) |
2999 | { | |
3000 | spa_t *spa = vd->vdev_spa; | |
93cf2076 | 3001 | range_tree_t *rt = vd->vdev_dtl[DTL_MISSING]; |
34dc7c2f | 3002 | objset_t *mos = spa->spa_meta_objset; |
93cf2076 | 3003 | range_tree_t *rtsync; |
34dc7c2f | 3004 | dmu_tx_t *tx; |
93cf2076 | 3005 | uint64_t object = space_map_object(vd->vdev_dtl_sm); |
34dc7c2f | 3006 | |
a1d477c2 | 3007 | ASSERT(vdev_is_concrete(vd)); |
93cf2076 | 3008 | ASSERT(vd->vdev_ops->vdev_op_leaf); |
428870ff | 3009 | |
34dc7c2f BB |
3010 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); |
3011 | ||
93cf2076 GW |
3012 | if (vd->vdev_detached || vd->vdev_top->vdev_removing) { |
3013 | mutex_enter(&vd->vdev_dtl_lock); | |
3014 | space_map_free(vd->vdev_dtl_sm, tx); | |
3015 | space_map_close(vd->vdev_dtl_sm); | |
3016 | vd->vdev_dtl_sm = NULL; | |
3017 | mutex_exit(&vd->vdev_dtl_lock); | |
e0ab3ab5 JS |
3018 | |
3019 | /* | |
3020 | * We only destroy the leaf ZAP for detached leaves or for | |
3021 | * removed log devices. Removed data devices handle leaf ZAP | |
3022 | * cleanup later, once cancellation is no longer possible. | |
3023 | */ | |
3024 | if (vd->vdev_leaf_zap != 0 && (vd->vdev_detached || | |
3025 | vd->vdev_top->vdev_islog)) { | |
3026 | vdev_destroy_unlink_zap(vd, vd->vdev_leaf_zap, tx); | |
3027 | vd->vdev_leaf_zap = 0; | |
3028 | } | |
3029 | ||
34dc7c2f | 3030 | dmu_tx_commit(tx); |
34dc7c2f BB |
3031 | return; |
3032 | } | |
3033 | ||
93cf2076 GW |
3034 | if (vd->vdev_dtl_sm == NULL) { |
3035 | uint64_t new_object; | |
3036 | ||
93e28d66 | 3037 | new_object = space_map_alloc(mos, zfs_vdev_dtl_sm_blksz, tx); |
93cf2076 GW |
3038 | VERIFY3U(new_object, !=, 0); |
3039 | ||
3040 | VERIFY0(space_map_open(&vd->vdev_dtl_sm, mos, new_object, | |
a1d477c2 | 3041 | 0, -1ULL, 0)); |
93cf2076 | 3042 | ASSERT(vd->vdev_dtl_sm != NULL); |
34dc7c2f BB |
3043 | } |
3044 | ||
ca577779 | 3045 | rtsync = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0); |
34dc7c2f BB |
3046 | |
3047 | mutex_enter(&vd->vdev_dtl_lock); | |
93cf2076 | 3048 | range_tree_walk(rt, range_tree_add, rtsync); |
34dc7c2f BB |
3049 | mutex_exit(&vd->vdev_dtl_lock); |
3050 | ||
93e28d66 | 3051 | space_map_truncate(vd->vdev_dtl_sm, zfs_vdev_dtl_sm_blksz, tx); |
4d044c4c | 3052 | space_map_write(vd->vdev_dtl_sm, rtsync, SM_ALLOC, SM_NO_VDEVID, tx); |
93cf2076 | 3053 | range_tree_vacate(rtsync, NULL, NULL); |
34dc7c2f | 3054 | |
93cf2076 | 3055 | range_tree_destroy(rtsync); |
34dc7c2f | 3056 | |
93cf2076 GW |
3057 | /* |
3058 | * If the object for the space map has changed then dirty | |
3059 | * the top level so that we update the config. | |
3060 | */ | |
3061 | if (object != space_map_object(vd->vdev_dtl_sm)) { | |
4a0ee12a PZ |
3062 | vdev_dbgmsg(vd, "txg %llu, spa %s, DTL old object %llu, " |
3063 | "new object %llu", (u_longlong_t)txg, spa_name(spa), | |
3064 | (u_longlong_t)object, | |
3065 | (u_longlong_t)space_map_object(vd->vdev_dtl_sm)); | |
93cf2076 GW |
3066 | vdev_config_dirty(vd->vdev_top); |
3067 | } | |
34dc7c2f BB |
3068 | |
3069 | dmu_tx_commit(tx); | |
3070 | } | |
3071 | ||
fb5f0bc8 BB |
3072 | /* |
3073 | * Determine whether the specified vdev can be offlined/detached/removed | |
3074 | * without losing data. | |
3075 | */ | |
3076 | boolean_t | |
3077 | vdev_dtl_required(vdev_t *vd) | |
3078 | { | |
3079 | spa_t *spa = vd->vdev_spa; | |
3080 | vdev_t *tvd = vd->vdev_top; | |
3081 | uint8_t cant_read = vd->vdev_cant_read; | |
3082 | boolean_t required; | |
3083 | ||
3084 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
3085 | ||
3086 | if (vd == spa->spa_root_vdev || vd == tvd) | |
3087 | return (B_TRUE); | |
3088 | ||
3089 | /* | |
3090 | * Temporarily mark the device as unreadable, and then determine | |
3091 | * whether this results in any DTL outages in the top-level vdev. | |
3092 | * If not, we can safely offline/detach/remove the device. | |
3093 | */ | |
3094 | vd->vdev_cant_read = B_TRUE; | |
9a49d3f3 | 3095 | vdev_dtl_reassess(tvd, 0, 0, B_FALSE, B_FALSE); |
fb5f0bc8 BB |
3096 | required = !vdev_dtl_empty(tvd, DTL_OUTAGE); |
3097 | vd->vdev_cant_read = cant_read; | |
9a49d3f3 | 3098 | vdev_dtl_reassess(tvd, 0, 0, B_FALSE, B_FALSE); |
fb5f0bc8 | 3099 | |
28caa74b MM |
3100 | if (!required && zio_injection_enabled) { |
3101 | required = !!zio_handle_device_injection(vd, NULL, | |
3102 | SET_ERROR(ECHILD)); | |
3103 | } | |
572e2857 | 3104 | |
fb5f0bc8 BB |
3105 | return (required); |
3106 | } | |
3107 | ||
b128c09f BB |
3108 | /* |
3109 | * Determine if resilver is needed, and if so the txg range. | |
3110 | */ | |
3111 | boolean_t | |
3112 | vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp) | |
3113 | { | |
3114 | boolean_t needed = B_FALSE; | |
3115 | uint64_t thismin = UINT64_MAX; | |
3116 | uint64_t thismax = 0; | |
3117 | ||
3118 | if (vd->vdev_children == 0) { | |
3119 | mutex_enter(&vd->vdev_dtl_lock); | |
d2734cce | 3120 | if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) && |
fb5f0bc8 | 3121 | vdev_writeable(vd)) { |
b128c09f | 3122 | |
5d1f7fb6 GW |
3123 | thismin = vdev_dtl_min(vd); |
3124 | thismax = vdev_dtl_max(vd); | |
b128c09f BB |
3125 | needed = B_TRUE; |
3126 | } | |
3127 | mutex_exit(&vd->vdev_dtl_lock); | |
3128 | } else { | |
1c27024e | 3129 | for (int c = 0; c < vd->vdev_children; c++) { |
b128c09f BB |
3130 | vdev_t *cvd = vd->vdev_child[c]; |
3131 | uint64_t cmin, cmax; | |
3132 | ||
3133 | if (vdev_resilver_needed(cvd, &cmin, &cmax)) { | |
3134 | thismin = MIN(thismin, cmin); | |
3135 | thismax = MAX(thismax, cmax); | |
3136 | needed = B_TRUE; | |
3137 | } | |
3138 | } | |
3139 | } | |
3140 | ||
3141 | if (needed && minp) { | |
3142 | *minp = thismin; | |
3143 | *maxp = thismax; | |
3144 | } | |
3145 | return (needed); | |
3146 | } | |
3147 | ||
d2734cce | 3148 | /* |
27f80e85 BB |
3149 | * Gets the checkpoint space map object from the vdev's ZAP. On success sm_obj |
3150 | * will contain either the checkpoint spacemap object or zero if none exists. | |
3151 | * All other errors are returned to the caller. | |
d2734cce SD |
3152 | */ |
3153 | int | |
27f80e85 | 3154 | vdev_checkpoint_sm_object(vdev_t *vd, uint64_t *sm_obj) |
d2734cce SD |
3155 | { |
3156 | ASSERT0(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER)); | |
27f80e85 | 3157 | |
d2734cce | 3158 | if (vd->vdev_top_zap == 0) { |
27f80e85 | 3159 | *sm_obj = 0; |
d2734cce SD |
3160 | return (0); |
3161 | } | |
3162 | ||
27f80e85 BB |
3163 | int error = zap_lookup(spa_meta_objset(vd->vdev_spa), vd->vdev_top_zap, |
3164 | VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, sm_obj); | |
3165 | if (error == ENOENT) { | |
3166 | *sm_obj = 0; | |
3167 | error = 0; | |
3168 | } | |
d2734cce | 3169 | |
27f80e85 | 3170 | return (error); |
d2734cce SD |
3171 | } |
3172 | ||
a1d477c2 | 3173 | int |
34dc7c2f BB |
3174 | vdev_load(vdev_t *vd) |
3175 | { | |
a1d477c2 MA |
3176 | int error = 0; |
3177 | ||
34dc7c2f BB |
3178 | /* |
3179 | * Recursively load all children. | |
3180 | */ | |
a1d477c2 MA |
3181 | for (int c = 0; c < vd->vdev_children; c++) { |
3182 | error = vdev_load(vd->vdev_child[c]); | |
3183 | if (error != 0) { | |
3184 | return (error); | |
3185 | } | |
3186 | } | |
3187 | ||
3188 | vdev_set_deflate_ratio(vd); | |
34dc7c2f | 3189 | |
cc99f275 DB |
3190 | /* |
3191 | * On spa_load path, grab the allocation bias from our zap | |
3192 | */ | |
3193 | if (vd == vd->vdev_top && vd->vdev_top_zap != 0) { | |
3194 | spa_t *spa = vd->vdev_spa; | |
3195 | char bias_str[64]; | |
3196 | ||
3a92552f | 3197 | error = zap_lookup(spa->spa_meta_objset, vd->vdev_top_zap, |
cc99f275 | 3198 | VDEV_TOP_ZAP_ALLOCATION_BIAS, 1, sizeof (bias_str), |
3a92552f MA |
3199 | bias_str); |
3200 | if (error == 0) { | |
cc99f275 DB |
3201 | ASSERT(vd->vdev_alloc_bias == VDEV_BIAS_NONE); |
3202 | vd->vdev_alloc_bias = vdev_derive_alloc_bias(bias_str); | |
3a92552f MA |
3203 | } else if (error != ENOENT) { |
3204 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
3205 | VDEV_AUX_CORRUPT_DATA); | |
3206 | vdev_dbgmsg(vd, "vdev_load: zap_lookup(top_zap=%llu) " | |
3207 | "failed [error=%d]", vd->vdev_top_zap, error); | |
3208 | return (error); | |
cc99f275 DB |
3209 | } |
3210 | } | |
3211 | ||
9a49d3f3 BB |
3212 | /* |
3213 | * Load any rebuild state from the top-level vdev zap. | |
3214 | */ | |
3215 | if (vd == vd->vdev_top && vd->vdev_top_zap != 0) { | |
3216 | error = vdev_rebuild_load(vd); | |
3217 | if (error && error != ENOTSUP) { | |
3218 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
3219 | VDEV_AUX_CORRUPT_DATA); | |
3220 | vdev_dbgmsg(vd, "vdev_load: vdev_rebuild_load " | |
3221 | "failed [error=%d]", error); | |
3222 | return (error); | |
3223 | } | |
3224 | } | |
3225 | ||
34dc7c2f BB |
3226 | /* |
3227 | * If this is a top-level vdev, initialize its metaslabs. | |
3228 | */ | |
a1d477c2 | 3229 | if (vd == vd->vdev_top && vdev_is_concrete(vd)) { |
cc99f275 DB |
3230 | vdev_metaslab_group_create(vd); |
3231 | ||
a1d477c2 MA |
3232 | if (vd->vdev_ashift == 0 || vd->vdev_asize == 0) { |
3233 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
3234 | VDEV_AUX_CORRUPT_DATA); | |
4a0ee12a PZ |
3235 | vdev_dbgmsg(vd, "vdev_load: invalid size. ashift=%llu, " |
3236 | "asize=%llu", (u_longlong_t)vd->vdev_ashift, | |
3237 | (u_longlong_t)vd->vdev_asize); | |
a1d477c2 | 3238 | return (SET_ERROR(ENXIO)); |
928e8ad4 SD |
3239 | } |
3240 | ||
3241 | error = vdev_metaslab_init(vd, 0); | |
3242 | if (error != 0) { | |
4a0ee12a PZ |
3243 | vdev_dbgmsg(vd, "vdev_load: metaslab_init failed " |
3244 | "[error=%d]", error); | |
a1d477c2 MA |
3245 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
3246 | VDEV_AUX_CORRUPT_DATA); | |
3247 | return (error); | |
3248 | } | |
d2734cce | 3249 | |
27f80e85 BB |
3250 | uint64_t checkpoint_sm_obj; |
3251 | error = vdev_checkpoint_sm_object(vd, &checkpoint_sm_obj); | |
3252 | if (error == 0 && checkpoint_sm_obj != 0) { | |
d2734cce SD |
3253 | objset_t *mos = spa_meta_objset(vd->vdev_spa); |
3254 | ASSERT(vd->vdev_asize != 0); | |
3255 | ASSERT3P(vd->vdev_checkpoint_sm, ==, NULL); | |
3256 | ||
928e8ad4 | 3257 | error = space_map_open(&vd->vdev_checkpoint_sm, |
d2734cce | 3258 | mos, checkpoint_sm_obj, 0, vd->vdev_asize, |
928e8ad4 SD |
3259 | vd->vdev_ashift); |
3260 | if (error != 0) { | |
d2734cce SD |
3261 | vdev_dbgmsg(vd, "vdev_load: space_map_open " |
3262 | "failed for checkpoint spacemap (obj %llu) " | |
3263 | "[error=%d]", | |
3264 | (u_longlong_t)checkpoint_sm_obj, error); | |
3265 | return (error); | |
3266 | } | |
3267 | ASSERT3P(vd->vdev_checkpoint_sm, !=, NULL); | |
d2734cce SD |
3268 | |
3269 | /* | |
3270 | * Since the checkpoint_sm contains free entries | |
425d3237 SD |
3271 | * exclusively we can use space_map_allocated() to |
3272 | * indicate the cumulative checkpointed space that | |
3273 | * has been freed. | |
d2734cce SD |
3274 | */ |
3275 | vd->vdev_stat.vs_checkpoint_space = | |
425d3237 | 3276 | -space_map_allocated(vd->vdev_checkpoint_sm); |
d2734cce SD |
3277 | vd->vdev_spa->spa_checkpoint_info.sci_dspace += |
3278 | vd->vdev_stat.vs_checkpoint_space; | |
27f80e85 BB |
3279 | } else if (error != 0) { |
3280 | vdev_dbgmsg(vd, "vdev_load: failed to retrieve " | |
3281 | "checkpoint space map object from vdev ZAP " | |
3282 | "[error=%d]", error); | |
3283 | return (error); | |
d2734cce | 3284 | } |
a1d477c2 MA |
3285 | } |
3286 | ||
34dc7c2f BB |
3287 | /* |
3288 | * If this is a leaf vdev, load its DTL. | |
3289 | */ | |
a1d477c2 | 3290 | if (vd->vdev_ops->vdev_op_leaf && (error = vdev_dtl_load(vd)) != 0) { |
34dc7c2f BB |
3291 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
3292 | VDEV_AUX_CORRUPT_DATA); | |
4a0ee12a PZ |
3293 | vdev_dbgmsg(vd, "vdev_load: vdev_dtl_load failed " |
3294 | "[error=%d]", error); | |
a1d477c2 MA |
3295 | return (error); |
3296 | } | |
3297 | ||
27f80e85 BB |
3298 | uint64_t obsolete_sm_object; |
3299 | error = vdev_obsolete_sm_object(vd, &obsolete_sm_object); | |
3300 | if (error == 0 && obsolete_sm_object != 0) { | |
a1d477c2 MA |
3301 | objset_t *mos = vd->vdev_spa->spa_meta_objset; |
3302 | ASSERT(vd->vdev_asize != 0); | |
d2734cce | 3303 | ASSERT3P(vd->vdev_obsolete_sm, ==, NULL); |
a1d477c2 MA |
3304 | |
3305 | if ((error = space_map_open(&vd->vdev_obsolete_sm, mos, | |
3306 | obsolete_sm_object, 0, vd->vdev_asize, 0))) { | |
3307 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
3308 | VDEV_AUX_CORRUPT_DATA); | |
4a0ee12a PZ |
3309 | vdev_dbgmsg(vd, "vdev_load: space_map_open failed for " |
3310 | "obsolete spacemap (obj %llu) [error=%d]", | |
3311 | (u_longlong_t)obsolete_sm_object, error); | |
a1d477c2 MA |
3312 | return (error); |
3313 | } | |
27f80e85 BB |
3314 | } else if (error != 0) { |
3315 | vdev_dbgmsg(vd, "vdev_load: failed to retrieve obsolete " | |
3316 | "space map object from vdev ZAP [error=%d]", error); | |
3317 | return (error); | |
a1d477c2 MA |
3318 | } |
3319 | ||
3320 | return (0); | |
34dc7c2f BB |
3321 | } |
3322 | ||
3323 | /* | |
3324 | * The special vdev case is used for hot spares and l2cache devices. Its | |
3325 | * sole purpose it to set the vdev state for the associated vdev. To do this, | |
3326 | * we make sure that we can open the underlying device, then try to read the | |
3327 | * label, and make sure that the label is sane and that it hasn't been | |
3328 | * repurposed to another pool. | |
3329 | */ | |
3330 | int | |
3331 | vdev_validate_aux(vdev_t *vd) | |
3332 | { | |
3333 | nvlist_t *label; | |
3334 | uint64_t guid, version; | |
3335 | uint64_t state; | |
3336 | ||
b128c09f BB |
3337 | if (!vdev_readable(vd)) |
3338 | return (0); | |
3339 | ||
3bc7e0fb | 3340 | if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) { |
34dc7c2f BB |
3341 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, |
3342 | VDEV_AUX_CORRUPT_DATA); | |
3343 | return (-1); | |
3344 | } | |
3345 | ||
3346 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 || | |
9ae529ec | 3347 | !SPA_VERSION_IS_SUPPORTED(version) || |
34dc7c2f BB |
3348 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 || |
3349 | guid != vd->vdev_guid || | |
3350 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) { | |
3351 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
3352 | VDEV_AUX_CORRUPT_DATA); | |
3353 | nvlist_free(label); | |
3354 | return (-1); | |
3355 | } | |
3356 | ||
3357 | /* | |
3358 | * We don't actually check the pool state here. If it's in fact in | |
3359 | * use by another pool, we update this fact on the fly when requested. | |
3360 | */ | |
3361 | nvlist_free(label); | |
3362 | return (0); | |
3363 | } | |
3364 | ||
93e28d66 SD |
3365 | static void |
3366 | vdev_destroy_ms_flush_data(vdev_t *vd, dmu_tx_t *tx) | |
3367 | { | |
3368 | objset_t *mos = spa_meta_objset(vd->vdev_spa); | |
3369 | ||
3370 | if (vd->vdev_top_zap == 0) | |
3371 | return; | |
3372 | ||
3373 | uint64_t object = 0; | |
3374 | int err = zap_lookup(mos, vd->vdev_top_zap, | |
3375 | VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, sizeof (uint64_t), 1, &object); | |
3376 | if (err == ENOENT) | |
3377 | return; | |
3a92552f | 3378 | VERIFY0(err); |
93e28d66 SD |
3379 | |
3380 | VERIFY0(dmu_object_free(mos, object, tx)); | |
3381 | VERIFY0(zap_remove(mos, vd->vdev_top_zap, | |
3382 | VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, tx)); | |
3383 | } | |
3384 | ||
a1d477c2 MA |
3385 | /* |
3386 | * Free the objects used to store this vdev's spacemaps, and the array | |
3387 | * that points to them. | |
3388 | */ | |
428870ff | 3389 | void |
a1d477c2 MA |
3390 | vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx) |
3391 | { | |
3392 | if (vd->vdev_ms_array == 0) | |
3393 | return; | |
3394 | ||
3395 | objset_t *mos = vd->vdev_spa->spa_meta_objset; | |
3396 | uint64_t array_count = vd->vdev_asize >> vd->vdev_ms_shift; | |
3397 | size_t array_bytes = array_count * sizeof (uint64_t); | |
3398 | uint64_t *smobj_array = kmem_alloc(array_bytes, KM_SLEEP); | |
3399 | VERIFY0(dmu_read(mos, vd->vdev_ms_array, 0, | |
3400 | array_bytes, smobj_array, 0)); | |
3401 | ||
3402 | for (uint64_t i = 0; i < array_count; i++) { | |
3403 | uint64_t smobj = smobj_array[i]; | |
3404 | if (smobj == 0) | |
3405 | continue; | |
3406 | ||
3407 | space_map_free_obj(mos, smobj, tx); | |
3408 | } | |
3409 | ||
3410 | kmem_free(smobj_array, array_bytes); | |
3411 | VERIFY0(dmu_object_free(mos, vd->vdev_ms_array, tx)); | |
93e28d66 | 3412 | vdev_destroy_ms_flush_data(vd, tx); |
a1d477c2 MA |
3413 | vd->vdev_ms_array = 0; |
3414 | } | |
3415 | ||
3416 | static void | |
ee900344 | 3417 | vdev_remove_empty_log(vdev_t *vd, uint64_t txg) |
428870ff BB |
3418 | { |
3419 | spa_t *spa = vd->vdev_spa; | |
428870ff | 3420 | |
ee900344 | 3421 | ASSERT(vd->vdev_islog); |
e0ab3ab5 JS |
3422 | ASSERT(vd == vd->vdev_top); |
3423 | ASSERT3U(txg, ==, spa_syncing_txg(spa)); | |
428870ff | 3424 | |
ee900344 | 3425 | dmu_tx_t *tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg); |
e0ab3ab5 | 3426 | |
ee900344 SD |
3427 | vdev_destroy_spacemaps(vd, tx); |
3428 | if (vd->vdev_top_zap != 0) { | |
e0ab3ab5 JS |
3429 | vdev_destroy_unlink_zap(vd, vd->vdev_top_zap, tx); |
3430 | vd->vdev_top_zap = 0; | |
3431 | } | |
ee900344 | 3432 | |
428870ff BB |
3433 | dmu_tx_commit(tx); |
3434 | } | |
3435 | ||
34dc7c2f BB |
3436 | void |
3437 | vdev_sync_done(vdev_t *vd, uint64_t txg) | |
3438 | { | |
3439 | metaslab_t *msp; | |
428870ff BB |
3440 | boolean_t reassess = !txg_list_empty(&vd->vdev_ms_list, TXG_CLEAN(txg)); |
3441 | ||
a1d477c2 | 3442 | ASSERT(vdev_is_concrete(vd)); |
34dc7c2f | 3443 | |
619f0976 GW |
3444 | while ((msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg))) |
3445 | != NULL) | |
34dc7c2f | 3446 | metaslab_sync_done(msp, txg); |
428870ff BB |
3447 | |
3448 | if (reassess) | |
3449 | metaslab_sync_reassess(vd->vdev_mg); | |
34dc7c2f BB |
3450 | } |
3451 | ||
3452 | void | |
3453 | vdev_sync(vdev_t *vd, uint64_t txg) | |
3454 | { | |
3455 | spa_t *spa = vd->vdev_spa; | |
3456 | vdev_t *lvd; | |
3457 | metaslab_t *msp; | |
34dc7c2f | 3458 | |
6c926f42 SD |
3459 | ASSERT3U(txg, ==, spa->spa_syncing_txg); |
3460 | dmu_tx_t *tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
a1d477c2 | 3461 | if (range_tree_space(vd->vdev_obsolete_segments) > 0) { |
a1d477c2 MA |
3462 | ASSERT(vd->vdev_removing || |
3463 | vd->vdev_ops == &vdev_indirect_ops); | |
3464 | ||
a1d477c2 | 3465 | vdev_indirect_sync_obsolete(vd, tx); |
a1d477c2 MA |
3466 | |
3467 | /* | |
3468 | * If the vdev is indirect, it can't have dirty | |
3469 | * metaslabs or DTLs. | |
3470 | */ | |
3471 | if (vd->vdev_ops == &vdev_indirect_ops) { | |
3472 | ASSERT(txg_list_empty(&vd->vdev_ms_list, txg)); | |
3473 | ASSERT(txg_list_empty(&vd->vdev_dtl_list, txg)); | |
6c926f42 | 3474 | dmu_tx_commit(tx); |
a1d477c2 MA |
3475 | return; |
3476 | } | |
3477 | } | |
3478 | ||
3479 | ASSERT(vdev_is_concrete(vd)); | |
3480 | ||
3481 | if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0 && | |
3482 | !vd->vdev_removing) { | |
34dc7c2f | 3483 | ASSERT(vd == vd->vdev_top); |
a1d477c2 | 3484 | ASSERT0(vd->vdev_indirect_config.vic_mapping_object); |
34dc7c2f BB |
3485 | vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset, |
3486 | DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx); | |
3487 | ASSERT(vd->vdev_ms_array != 0); | |
3488 | vdev_config_dirty(vd); | |
34dc7c2f BB |
3489 | } |
3490 | ||
3491 | while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) { | |
3492 | metaslab_sync(msp, txg); | |
3493 | (void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg)); | |
3494 | } | |
3495 | ||
3496 | while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL) | |
3497 | vdev_dtl_sync(lvd, txg); | |
3498 | ||
a1d477c2 | 3499 | /* |
ee900344 SD |
3500 | * If this is an empty log device being removed, destroy the |
3501 | * metadata associated with it. | |
a1d477c2 | 3502 | */ |
ee900344 SD |
3503 | if (vd->vdev_islog && vd->vdev_stat.vs_alloc == 0 && vd->vdev_removing) |
3504 | vdev_remove_empty_log(vd, txg); | |
a1d477c2 | 3505 | |
34dc7c2f | 3506 | (void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg)); |
6c926f42 | 3507 | dmu_tx_commit(tx); |
34dc7c2f BB |
3508 | } |
3509 | ||
3510 | uint64_t | |
3511 | vdev_psize_to_asize(vdev_t *vd, uint64_t psize) | |
3512 | { | |
3513 | return (vd->vdev_ops->vdev_op_asize(vd, psize)); | |
3514 | } | |
3515 | ||
34dc7c2f BB |
3516 | /* |
3517 | * Mark the given vdev faulted. A faulted vdev behaves as if the device could | |
3518 | * not be opened, and no I/O is attempted. | |
3519 | */ | |
3520 | int | |
428870ff | 3521 | vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux) |
34dc7c2f | 3522 | { |
572e2857 | 3523 | vdev_t *vd, *tvd; |
34dc7c2f | 3524 | |
428870ff | 3525 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 3526 | |
b128c09f | 3527 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
28caa74b | 3528 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV))); |
34dc7c2f | 3529 | |
34dc7c2f | 3530 | if (!vd->vdev_ops->vdev_op_leaf) |
28caa74b | 3531 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP))); |
34dc7c2f | 3532 | |
572e2857 BB |
3533 | tvd = vd->vdev_top; |
3534 | ||
4a283c7f TH |
3535 | /* |
3536 | * If user did a 'zpool offline -f' then make the fault persist across | |
3537 | * reboots. | |
3538 | */ | |
3539 | if (aux == VDEV_AUX_EXTERNAL_PERSIST) { | |
3540 | /* | |
3541 | * There are two kinds of forced faults: temporary and | |
3542 | * persistent. Temporary faults go away at pool import, while | |
3543 | * persistent faults stay set. Both types of faults can be | |
3544 | * cleared with a zpool clear. | |
3545 | * | |
3546 | * We tell if a vdev is persistently faulted by looking at the | |
3547 | * ZPOOL_CONFIG_AUX_STATE nvpair. If it's set to "external" at | |
3548 | * import then it's a persistent fault. Otherwise, it's | |
3549 | * temporary. We get ZPOOL_CONFIG_AUX_STATE set to "external" | |
3550 | * by setting vd.vdev_stat.vs_aux to VDEV_AUX_EXTERNAL. This | |
3551 | * tells vdev_config_generate() (which gets run later) to set | |
3552 | * ZPOOL_CONFIG_AUX_STATE to "external" in the nvlist. | |
3553 | */ | |
3554 | vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL; | |
3555 | vd->vdev_tmpoffline = B_FALSE; | |
3556 | aux = VDEV_AUX_EXTERNAL; | |
3557 | } else { | |
3558 | vd->vdev_tmpoffline = B_TRUE; | |
3559 | } | |
3560 | ||
428870ff BB |
3561 | /* |
3562 | * We don't directly use the aux state here, but if we do a | |
3563 | * vdev_reopen(), we need this value to be present to remember why we | |
3564 | * were faulted. | |
3565 | */ | |
3566 | vd->vdev_label_aux = aux; | |
3567 | ||
34dc7c2f BB |
3568 | /* |
3569 | * Faulted state takes precedence over degraded. | |
3570 | */ | |
428870ff | 3571 | vd->vdev_delayed_close = B_FALSE; |
34dc7c2f BB |
3572 | vd->vdev_faulted = 1ULL; |
3573 | vd->vdev_degraded = 0ULL; | |
428870ff | 3574 | vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, aux); |
34dc7c2f BB |
3575 | |
3576 | /* | |
428870ff BB |
3577 | * If this device has the only valid copy of the data, then |
3578 | * back off and simply mark the vdev as degraded instead. | |
34dc7c2f | 3579 | */ |
572e2857 | 3580 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && vdev_dtl_required(vd)) { |
34dc7c2f BB |
3581 | vd->vdev_degraded = 1ULL; |
3582 | vd->vdev_faulted = 0ULL; | |
3583 | ||
3584 | /* | |
3585 | * If we reopen the device and it's not dead, only then do we | |
3586 | * mark it degraded. | |
3587 | */ | |
572e2857 | 3588 | vdev_reopen(tvd); |
34dc7c2f | 3589 | |
428870ff BB |
3590 | if (vdev_readable(vd)) |
3591 | vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, aux); | |
34dc7c2f BB |
3592 | } |
3593 | ||
b128c09f | 3594 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
3595 | } |
3596 | ||
3597 | /* | |
3598 | * Mark the given vdev degraded. A degraded vdev is purely an indication to the | |
3599 | * user that something is wrong. The vdev continues to operate as normal as far | |
3600 | * as I/O is concerned. | |
3601 | */ | |
3602 | int | |
428870ff | 3603 | vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux) |
34dc7c2f | 3604 | { |
b128c09f | 3605 | vdev_t *vd; |
34dc7c2f | 3606 | |
428870ff | 3607 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 3608 | |
b128c09f | 3609 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
28caa74b | 3610 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV))); |
34dc7c2f | 3611 | |
34dc7c2f | 3612 | if (!vd->vdev_ops->vdev_op_leaf) |
28caa74b | 3613 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP))); |
34dc7c2f BB |
3614 | |
3615 | /* | |
3616 | * If the vdev is already faulted, then don't do anything. | |
3617 | */ | |
b128c09f BB |
3618 | if (vd->vdev_faulted || vd->vdev_degraded) |
3619 | return (spa_vdev_state_exit(spa, NULL, 0)); | |
34dc7c2f BB |
3620 | |
3621 | vd->vdev_degraded = 1ULL; | |
3622 | if (!vdev_is_dead(vd)) | |
3623 | vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, | |
428870ff | 3624 | aux); |
34dc7c2f | 3625 | |
b128c09f | 3626 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
3627 | } |
3628 | ||
3629 | /* | |
d3cc8b15 WA |
3630 | * Online the given vdev. |
3631 | * | |
3632 | * If 'ZFS_ONLINE_UNSPARE' is set, it implies two things. First, any attached | |
3633 | * spare device should be detached when the device finishes resilvering. | |
3634 | * Second, the online should be treated like a 'test' online case, so no FMA | |
3635 | * events are generated if the device fails to open. | |
34dc7c2f BB |
3636 | */ |
3637 | int | |
b128c09f | 3638 | vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate) |
34dc7c2f | 3639 | { |
9babb374 | 3640 | vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev; |
153b2285 YP |
3641 | boolean_t wasoffline; |
3642 | vdev_state_t oldstate; | |
34dc7c2f | 3643 | |
428870ff | 3644 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 3645 | |
b128c09f | 3646 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
28caa74b | 3647 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV))); |
34dc7c2f BB |
3648 | |
3649 | if (!vd->vdev_ops->vdev_op_leaf) | |
28caa74b | 3650 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP))); |
34dc7c2f | 3651 | |
153b2285 YP |
3652 | wasoffline = (vd->vdev_offline || vd->vdev_tmpoffline); |
3653 | oldstate = vd->vdev_state; | |
fb390aaf | 3654 | |
9babb374 | 3655 | tvd = vd->vdev_top; |
34dc7c2f BB |
3656 | vd->vdev_offline = B_FALSE; |
3657 | vd->vdev_tmpoffline = B_FALSE; | |
b128c09f BB |
3658 | vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE); |
3659 | vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT); | |
9babb374 BB |
3660 | |
3661 | /* XXX - L2ARC 1.0 does not support expansion */ | |
3662 | if (!vd->vdev_aux) { | |
3663 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) | |
d441e85d BB |
3664 | pvd->vdev_expanding = !!((flags & ZFS_ONLINE_EXPAND) || |
3665 | spa->spa_autoexpand); | |
d48091de | 3666 | vd->vdev_expansion_time = gethrestime_sec(); |
9babb374 BB |
3667 | } |
3668 | ||
3669 | vdev_reopen(tvd); | |
34dc7c2f BB |
3670 | vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE; |
3671 | ||
9babb374 BB |
3672 | if (!vd->vdev_aux) { |
3673 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) | |
3674 | pvd->vdev_expanding = B_FALSE; | |
3675 | } | |
3676 | ||
34dc7c2f BB |
3677 | if (newstate) |
3678 | *newstate = vd->vdev_state; | |
3679 | if ((flags & ZFS_ONLINE_UNSPARE) && | |
3680 | !vdev_is_dead(vd) && vd->vdev_parent && | |
3681 | vd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3682 | vd->vdev_parent->vdev_child[0] == vd) | |
3683 | vd->vdev_unspare = B_TRUE; | |
3684 | ||
9babb374 BB |
3685 | if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) { |
3686 | ||
3687 | /* XXX - L2ARC 1.0 does not support expansion */ | |
3688 | if (vd->vdev_aux) | |
3689 | return (spa_vdev_state_exit(spa, vd, ENOTSUP)); | |
3690 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
3691 | } | |
fb390aaf | 3692 | |
619f0976 GW |
3693 | /* Restart initializing if necessary */ |
3694 | mutex_enter(&vd->vdev_initialize_lock); | |
3695 | if (vdev_writeable(vd) && | |
3696 | vd->vdev_initialize_thread == NULL && | |
3697 | vd->vdev_initialize_state == VDEV_INITIALIZE_ACTIVE) { | |
3698 | (void) vdev_initialize(vd); | |
3699 | } | |
3700 | mutex_exit(&vd->vdev_initialize_lock); | |
3701 | ||
b7654bd7 GA |
3702 | /* |
3703 | * Restart trimming if necessary. We do not restart trimming for cache | |
3704 | * devices here. This is triggered by l2arc_rebuild_vdev() | |
3705 | * asynchronously for the whole device or in l2arc_evict() as it evicts | |
3706 | * space for upcoming writes. | |
3707 | */ | |
1b939560 | 3708 | mutex_enter(&vd->vdev_trim_lock); |
b7654bd7 | 3709 | if (vdev_writeable(vd) && !vd->vdev_isl2cache && |
1b939560 BB |
3710 | vd->vdev_trim_thread == NULL && |
3711 | vd->vdev_trim_state == VDEV_TRIM_ACTIVE) { | |
3712 | (void) vdev_trim(vd, vd->vdev_trim_rate, vd->vdev_trim_partial, | |
3713 | vd->vdev_trim_secure); | |
3714 | } | |
3715 | mutex_exit(&vd->vdev_trim_lock); | |
3716 | ||
153b2285 YP |
3717 | if (wasoffline || |
3718 | (oldstate < VDEV_STATE_DEGRADED && | |
3719 | vd->vdev_state >= VDEV_STATE_DEGRADED)) | |
12fa0466 | 3720 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_ONLINE); |
fb390aaf | 3721 | |
fb5f0bc8 | 3722 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
3723 | } |
3724 | ||
428870ff BB |
3725 | static int |
3726 | vdev_offline_locked(spa_t *spa, uint64_t guid, uint64_t flags) | |
34dc7c2f | 3727 | { |
9babb374 | 3728 | vdev_t *vd, *tvd; |
428870ff BB |
3729 | int error = 0; |
3730 | uint64_t generation; | |
3731 | metaslab_group_t *mg; | |
34dc7c2f | 3732 | |
428870ff BB |
3733 | top: |
3734 | spa_vdev_state_enter(spa, SCL_ALLOC); | |
34dc7c2f | 3735 | |
b128c09f | 3736 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
28caa74b | 3737 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV))); |
34dc7c2f BB |
3738 | |
3739 | if (!vd->vdev_ops->vdev_op_leaf) | |
28caa74b | 3740 | return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP))); |
34dc7c2f | 3741 | |
9babb374 | 3742 | tvd = vd->vdev_top; |
428870ff BB |
3743 | mg = tvd->vdev_mg; |
3744 | generation = spa->spa_config_generation + 1; | |
9babb374 | 3745 | |
34dc7c2f BB |
3746 | /* |
3747 | * If the device isn't already offline, try to offline it. | |
3748 | */ | |
3749 | if (!vd->vdev_offline) { | |
3750 | /* | |
fb5f0bc8 | 3751 | * If this device has the only valid copy of some data, |
9babb374 BB |
3752 | * don't allow it to be offlined. Log devices are always |
3753 | * expendable. | |
34dc7c2f | 3754 | */ |
9babb374 BB |
3755 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && |
3756 | vdev_dtl_required(vd)) | |
28caa74b MM |
3757 | return (spa_vdev_state_exit(spa, NULL, |
3758 | SET_ERROR(EBUSY))); | |
34dc7c2f | 3759 | |
428870ff BB |
3760 | /* |
3761 | * If the top-level is a slog and it has had allocations | |
3762 | * then proceed. We check that the vdev's metaslab group | |
3763 | * is not NULL since it's possible that we may have just | |
3764 | * added this vdev but not yet initialized its metaslabs. | |
3765 | */ | |
3766 | if (tvd->vdev_islog && mg != NULL) { | |
3767 | /* | |
3768 | * Prevent any future allocations. | |
3769 | */ | |
3770 | metaslab_group_passivate(mg); | |
3771 | (void) spa_vdev_state_exit(spa, vd, 0); | |
3772 | ||
a1d477c2 | 3773 | error = spa_reset_logs(spa); |
428870ff | 3774 | |
d2734cce SD |
3775 | /* |
3776 | * If the log device was successfully reset but has | |
3777 | * checkpointed data, do not offline it. | |
3778 | */ | |
3779 | if (error == 0 && | |
3780 | tvd->vdev_checkpoint_sm != NULL) { | |
425d3237 SD |
3781 | ASSERT3U(space_map_allocated( |
3782 | tvd->vdev_checkpoint_sm), !=, 0); | |
d2734cce SD |
3783 | error = ZFS_ERR_CHECKPOINT_EXISTS; |
3784 | } | |
3785 | ||
428870ff BB |
3786 | spa_vdev_state_enter(spa, SCL_ALLOC); |
3787 | ||
3788 | /* | |
3789 | * Check to see if the config has changed. | |
3790 | */ | |
3791 | if (error || generation != spa->spa_config_generation) { | |
3792 | metaslab_group_activate(mg); | |
3793 | if (error) | |
3794 | return (spa_vdev_state_exit(spa, | |
3795 | vd, error)); | |
3796 | (void) spa_vdev_state_exit(spa, vd, 0); | |
3797 | goto top; | |
3798 | } | |
c99c9001 | 3799 | ASSERT0(tvd->vdev_stat.vs_alloc); |
428870ff BB |
3800 | } |
3801 | ||
34dc7c2f BB |
3802 | /* |
3803 | * Offline this device and reopen its top-level vdev. | |
9babb374 BB |
3804 | * If the top-level vdev is a log device then just offline |
3805 | * it. Otherwise, if this action results in the top-level | |
3806 | * vdev becoming unusable, undo it and fail the request. | |
34dc7c2f BB |
3807 | */ |
3808 | vd->vdev_offline = B_TRUE; | |
9babb374 BB |
3809 | vdev_reopen(tvd); |
3810 | ||
3811 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && | |
3812 | vdev_is_dead(tvd)) { | |
34dc7c2f | 3813 | vd->vdev_offline = B_FALSE; |
9babb374 | 3814 | vdev_reopen(tvd); |
28caa74b MM |
3815 | return (spa_vdev_state_exit(spa, NULL, |
3816 | SET_ERROR(EBUSY))); | |
34dc7c2f | 3817 | } |
428870ff BB |
3818 | |
3819 | /* | |
3820 | * Add the device back into the metaslab rotor so that | |
3821 | * once we online the device it's open for business. | |
3822 | */ | |
3823 | if (tvd->vdev_islog && mg != NULL) | |
3824 | metaslab_group_activate(mg); | |
34dc7c2f BB |
3825 | } |
3826 | ||
b128c09f | 3827 | vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY); |
34dc7c2f | 3828 | |
428870ff BB |
3829 | return (spa_vdev_state_exit(spa, vd, 0)); |
3830 | } | |
9babb374 | 3831 | |
428870ff BB |
3832 | int |
3833 | vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags) | |
3834 | { | |
3835 | int error; | |
9babb374 | 3836 | |
428870ff BB |
3837 | mutex_enter(&spa->spa_vdev_top_lock); |
3838 | error = vdev_offline_locked(spa, guid, flags); | |
3839 | mutex_exit(&spa->spa_vdev_top_lock); | |
3840 | ||
3841 | return (error); | |
34dc7c2f BB |
3842 | } |
3843 | ||
3844 | /* | |
3845 | * Clear the error counts associated with this vdev. Unlike vdev_online() and | |
3846 | * vdev_offline(), we assume the spa config is locked. We also clear all | |
3847 | * children. If 'vd' is NULL, then the user wants to clear all vdevs. | |
34dc7c2f BB |
3848 | */ |
3849 | void | |
b128c09f | 3850 | vdev_clear(spa_t *spa, vdev_t *vd) |
34dc7c2f | 3851 | { |
b128c09f BB |
3852 | vdev_t *rvd = spa->spa_root_vdev; |
3853 | ||
3854 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
34dc7c2f BB |
3855 | |
3856 | if (vd == NULL) | |
b128c09f | 3857 | vd = rvd; |
34dc7c2f BB |
3858 | |
3859 | vd->vdev_stat.vs_read_errors = 0; | |
3860 | vd->vdev_stat.vs_write_errors = 0; | |
3861 | vd->vdev_stat.vs_checksum_errors = 0; | |
ad796b8a | 3862 | vd->vdev_stat.vs_slow_ios = 0; |
34dc7c2f | 3863 | |
1c27024e | 3864 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f | 3865 | vdev_clear(spa, vd->vdev_child[c]); |
34dc7c2f | 3866 | |
a1d477c2 MA |
3867 | /* |
3868 | * It makes no sense to "clear" an indirect vdev. | |
3869 | */ | |
3870 | if (!vdev_is_concrete(vd)) | |
3871 | return; | |
3872 | ||
34dc7c2f | 3873 | /* |
b128c09f BB |
3874 | * If we're in the FAULTED state or have experienced failed I/O, then |
3875 | * clear the persistent state and attempt to reopen the device. We | |
3876 | * also mark the vdev config dirty, so that the new faulted state is | |
3877 | * written out to disk. | |
34dc7c2f | 3878 | */ |
b128c09f BB |
3879 | if (vd->vdev_faulted || vd->vdev_degraded || |
3880 | !vdev_readable(vd) || !vdev_writeable(vd)) { | |
428870ff | 3881 | /* |
4e33ba4c | 3882 | * When reopening in response to a clear event, it may be due to |
428870ff BB |
3883 | * a fmadm repair request. In this case, if the device is |
3884 | * still broken, we want to still post the ereport again. | |
3885 | */ | |
3886 | vd->vdev_forcefault = B_TRUE; | |
3887 | ||
572e2857 | 3888 | vd->vdev_faulted = vd->vdev_degraded = 0ULL; |
b128c09f BB |
3889 | vd->vdev_cant_read = B_FALSE; |
3890 | vd->vdev_cant_write = B_FALSE; | |
4a283c7f | 3891 | vd->vdev_stat.vs_aux = 0; |
b128c09f | 3892 | |
572e2857 | 3893 | vdev_reopen(vd == rvd ? rvd : vd->vdev_top); |
34dc7c2f | 3894 | |
428870ff BB |
3895 | vd->vdev_forcefault = B_FALSE; |
3896 | ||
572e2857 | 3897 | if (vd != rvd && vdev_writeable(vd->vdev_top)) |
b128c09f BB |
3898 | vdev_state_dirty(vd->vdev_top); |
3899 | ||
3c819a2c JP |
3900 | /* If a resilver isn't required, check if vdevs can be culled */ |
3901 | if (vd->vdev_aux == NULL && !vdev_is_dead(vd) && | |
3902 | !dsl_scan_resilvering(spa->spa_dsl_pool) && | |
3903 | !dsl_scan_resilver_scheduled(spa->spa_dsl_pool)) | |
3904 | spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); | |
34dc7c2f | 3905 | |
12fa0466 | 3906 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_CLEAR); |
34dc7c2f | 3907 | } |
428870ff BB |
3908 | |
3909 | /* | |
3910 | * When clearing a FMA-diagnosed fault, we always want to | |
3911 | * unspare the device, as we assume that the original spare was | |
3912 | * done in response to the FMA fault. | |
3913 | */ | |
3914 | if (!vdev_is_dead(vd) && vd->vdev_parent != NULL && | |
3915 | vd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
3916 | vd->vdev_parent->vdev_child[0] == vd) | |
3917 | vd->vdev_unspare = B_TRUE; | |
34dc7c2f BB |
3918 | } |
3919 | ||
b128c09f BB |
3920 | boolean_t |
3921 | vdev_is_dead(vdev_t *vd) | |
3922 | { | |
428870ff BB |
3923 | /* |
3924 | * Holes and missing devices are always considered "dead". | |
3925 | * This simplifies the code since we don't have to check for | |
3926 | * these types of devices in the various code paths. | |
3927 | * Instead we rely on the fact that we skip over dead devices | |
3928 | * before issuing I/O to them. | |
3929 | */ | |
a1d477c2 MA |
3930 | return (vd->vdev_state < VDEV_STATE_DEGRADED || |
3931 | vd->vdev_ops == &vdev_hole_ops || | |
428870ff | 3932 | vd->vdev_ops == &vdev_missing_ops); |
b128c09f BB |
3933 | } |
3934 | ||
3935 | boolean_t | |
34dc7c2f BB |
3936 | vdev_readable(vdev_t *vd) |
3937 | { | |
b128c09f | 3938 | return (!vdev_is_dead(vd) && !vd->vdev_cant_read); |
34dc7c2f BB |
3939 | } |
3940 | ||
b128c09f | 3941 | boolean_t |
34dc7c2f BB |
3942 | vdev_writeable(vdev_t *vd) |
3943 | { | |
a1d477c2 MA |
3944 | return (!vdev_is_dead(vd) && !vd->vdev_cant_write && |
3945 | vdev_is_concrete(vd)); | |
34dc7c2f BB |
3946 | } |
3947 | ||
b128c09f BB |
3948 | boolean_t |
3949 | vdev_allocatable(vdev_t *vd) | |
34dc7c2f | 3950 | { |
fb5f0bc8 BB |
3951 | uint64_t state = vd->vdev_state; |
3952 | ||
b128c09f | 3953 | /* |
fb5f0bc8 | 3954 | * We currently allow allocations from vdevs which may be in the |
b128c09f BB |
3955 | * process of reopening (i.e. VDEV_STATE_CLOSED). If the device |
3956 | * fails to reopen then we'll catch it later when we're holding | |
fb5f0bc8 BB |
3957 | * the proper locks. Note that we have to get the vdev state |
3958 | * in a local variable because although it changes atomically, | |
3959 | * we're asking two separate questions about it. | |
b128c09f | 3960 | */ |
fb5f0bc8 | 3961 | return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) && |
a1d477c2 | 3962 | !vd->vdev_cant_write && vdev_is_concrete(vd) && |
3dfb57a3 | 3963 | vd->vdev_mg->mg_initialized); |
34dc7c2f BB |
3964 | } |
3965 | ||
b128c09f BB |
3966 | boolean_t |
3967 | vdev_accessible(vdev_t *vd, zio_t *zio) | |
34dc7c2f | 3968 | { |
b128c09f | 3969 | ASSERT(zio->io_vd == vd); |
34dc7c2f | 3970 | |
b128c09f BB |
3971 | if (vdev_is_dead(vd) || vd->vdev_remove_wanted) |
3972 | return (B_FALSE); | |
34dc7c2f | 3973 | |
b128c09f BB |
3974 | if (zio->io_type == ZIO_TYPE_READ) |
3975 | return (!vd->vdev_cant_read); | |
34dc7c2f | 3976 | |
b128c09f BB |
3977 | if (zio->io_type == ZIO_TYPE_WRITE) |
3978 | return (!vd->vdev_cant_write); | |
34dc7c2f | 3979 | |
b128c09f | 3980 | return (B_TRUE); |
34dc7c2f BB |
3981 | } |
3982 | ||
193a37cb TH |
3983 | static void |
3984 | vdev_get_child_stat(vdev_t *cvd, vdev_stat_t *vs, vdev_stat_t *cvs) | |
34dc7c2f | 3985 | { |
1b939560 | 3986 | for (int t = 0; t < VS_ZIO_TYPES; t++) { |
193a37cb TH |
3987 | vs->vs_ops[t] += cvs->vs_ops[t]; |
3988 | vs->vs_bytes[t] += cvs->vs_bytes[t]; | |
3989 | } | |
34dc7c2f | 3990 | |
193a37cb TH |
3991 | cvs->vs_scan_removing = cvd->vdev_removing; |
3992 | } | |
f3a7f661 | 3993 | |
193a37cb TH |
3994 | /* |
3995 | * Get extended stats | |
3996 | */ | |
3997 | static void | |
3998 | vdev_get_child_stat_ex(vdev_t *cvd, vdev_stat_ex_t *vsx, vdev_stat_ex_t *cvsx) | |
3999 | { | |
4000 | int t, b; | |
4001 | for (t = 0; t < ZIO_TYPES; t++) { | |
7e945072 | 4002 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_disk_histo[0]); b++) |
193a37cb | 4003 | vsx->vsx_disk_histo[t][b] += cvsx->vsx_disk_histo[t][b]; |
7e945072 TH |
4004 | |
4005 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_total_histo[0]); b++) { | |
193a37cb TH |
4006 | vsx->vsx_total_histo[t][b] += |
4007 | cvsx->vsx_total_histo[t][b]; | |
4008 | } | |
f38dfec3 | 4009 | } |
34dc7c2f | 4010 | |
193a37cb | 4011 | for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) { |
7e945072 | 4012 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_queue_histo[0]); b++) { |
193a37cb TH |
4013 | vsx->vsx_queue_histo[t][b] += |
4014 | cvsx->vsx_queue_histo[t][b]; | |
4015 | } | |
4016 | vsx->vsx_active_queue[t] += cvsx->vsx_active_queue[t]; | |
4017 | vsx->vsx_pend_queue[t] += cvsx->vsx_pend_queue[t]; | |
7e945072 TH |
4018 | |
4019 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_ind_histo[0]); b++) | |
4020 | vsx->vsx_ind_histo[t][b] += cvsx->vsx_ind_histo[t][b]; | |
4021 | ||
4022 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_agg_histo[0]); b++) | |
4023 | vsx->vsx_agg_histo[t][b] += cvsx->vsx_agg_histo[t][b]; | |
193a37cb | 4024 | } |
7e945072 | 4025 | |
193a37cb TH |
4026 | } |
4027 | ||
d2734cce SD |
4028 | boolean_t |
4029 | vdev_is_spacemap_addressable(vdev_t *vd) | |
4030 | { | |
419ba591 SD |
4031 | if (spa_feature_is_active(vd->vdev_spa, SPA_FEATURE_SPACEMAP_V2)) |
4032 | return (B_TRUE); | |
4033 | ||
d2734cce | 4034 | /* |
419ba591 SD |
4035 | * If double-word space map entries are not enabled we assume |
4036 | * 47 bits of the space map entry are dedicated to the entry's | |
4037 | * offset (see SM_OFFSET_BITS in space_map.h). We then use that | |
4038 | * to calculate the maximum address that can be described by a | |
4039 | * space map entry for the given device. | |
d2734cce | 4040 | */ |
419ba591 | 4041 | uint64_t shift = vd->vdev_ashift + SM_OFFSET_BITS; |
d2734cce SD |
4042 | |
4043 | if (shift >= 63) /* detect potential overflow */ | |
4044 | return (B_TRUE); | |
4045 | ||
4046 | return (vd->vdev_asize < (1ULL << shift)); | |
4047 | } | |
4048 | ||
193a37cb TH |
4049 | /* |
4050 | * Get statistics for the given vdev. | |
4051 | */ | |
4052 | static void | |
4053 | vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) | |
4054 | { | |
1c27024e | 4055 | int t; |
34dc7c2f BB |
4056 | /* |
4057 | * If we're getting stats on the root vdev, aggregate the I/O counts | |
4058 | * over all top-level vdevs (i.e. the direct children of the root). | |
4059 | */ | |
193a37cb TH |
4060 | if (!vd->vdev_ops->vdev_op_leaf) { |
4061 | if (vs) { | |
4062 | memset(vs->vs_ops, 0, sizeof (vs->vs_ops)); | |
4063 | memset(vs->vs_bytes, 0, sizeof (vs->vs_bytes)); | |
4064 | } | |
4065 | if (vsx) | |
4066 | memset(vsx, 0, sizeof (*vsx)); | |
4067 | ||
1c27024e | 4068 | for (int c = 0; c < vd->vdev_children; c++) { |
193a37cb | 4069 | vdev_t *cvd = vd->vdev_child[c]; |
34dc7c2f | 4070 | vdev_stat_t *cvs = &cvd->vdev_stat; |
193a37cb TH |
4071 | vdev_stat_ex_t *cvsx = &cvd->vdev_stat_ex; |
4072 | ||
4073 | vdev_get_stats_ex_impl(cvd, cvs, cvsx); | |
4074 | if (vs) | |
4075 | vdev_get_child_stat(cvd, vs, cvs); | |
4076 | if (vsx) | |
4077 | vdev_get_child_stat_ex(cvd, vsx, cvsx); | |
34dc7c2f | 4078 | |
193a37cb TH |
4079 | } |
4080 | } else { | |
4081 | /* | |
4082 | * We're a leaf. Just copy our ZIO active queue stats in. The | |
4083 | * other leaf stats are updated in vdev_stat_update(). | |
4084 | */ | |
4085 | if (!vsx) | |
4086 | return; | |
4087 | ||
4088 | memcpy(vsx, &vd->vdev_stat_ex, sizeof (vd->vdev_stat_ex)); | |
4089 | ||
4090 | for (t = 0; t < ARRAY_SIZE(vd->vdev_queue.vq_class); t++) { | |
4091 | vsx->vsx_active_queue[t] = | |
4092 | vd->vdev_queue.vq_class[t].vqc_active; | |
4093 | vsx->vsx_pend_queue[t] = avl_numnodes( | |
4094 | &vd->vdev_queue.vq_class[t].vqc_queued_tree); | |
34dc7c2f BB |
4095 | } |
4096 | } | |
193a37cb TH |
4097 | } |
4098 | ||
4099 | void | |
4100 | vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) | |
4101 | { | |
0f676dc2 | 4102 | vdev_t *tvd = vd->vdev_top; |
193a37cb TH |
4103 | mutex_enter(&vd->vdev_stat_lock); |
4104 | if (vs) { | |
4105 | bcopy(&vd->vdev_stat, vs, sizeof (*vs)); | |
4106 | vs->vs_timestamp = gethrtime() - vs->vs_timestamp; | |
4107 | vs->vs_state = vd->vdev_state; | |
4108 | vs->vs_rsize = vdev_get_min_asize(vd); | |
9a49d3f3 | 4109 | |
619f0976 | 4110 | if (vd->vdev_ops->vdev_op_leaf) { |
193a37cb TH |
4111 | vs->vs_rsize += VDEV_LABEL_START_SIZE + |
4112 | VDEV_LABEL_END_SIZE; | |
619f0976 | 4113 | /* |
1b939560 | 4114 | * Report initializing progress. Since we don't |
619f0976 GW |
4115 | * have the initializing locks held, this is only |
4116 | * an estimate (although a fairly accurate one). | |
4117 | */ | |
4118 | vs->vs_initialize_bytes_done = | |
4119 | vd->vdev_initialize_bytes_done; | |
4120 | vs->vs_initialize_bytes_est = | |
4121 | vd->vdev_initialize_bytes_est; | |
4122 | vs->vs_initialize_state = vd->vdev_initialize_state; | |
4123 | vs->vs_initialize_action_time = | |
4124 | vd->vdev_initialize_action_time; | |
1b939560 BB |
4125 | |
4126 | /* | |
4127 | * Report manual TRIM progress. Since we don't have | |
4128 | * the manual TRIM locks held, this is only an | |
4129 | * estimate (although fairly accurate one). | |
4130 | */ | |
4131 | vs->vs_trim_notsup = !vd->vdev_has_trim; | |
4132 | vs->vs_trim_bytes_done = vd->vdev_trim_bytes_done; | |
4133 | vs->vs_trim_bytes_est = vd->vdev_trim_bytes_est; | |
4134 | vs->vs_trim_state = vd->vdev_trim_state; | |
4135 | vs->vs_trim_action_time = vd->vdev_trim_action_time; | |
9a49d3f3 BB |
4136 | |
4137 | /* Set when there is a deferred resilver. */ | |
4138 | vs->vs_resilver_deferred = vd->vdev_resilver_deferred; | |
619f0976 | 4139 | } |
9a49d3f3 | 4140 | |
0f676dc2 | 4141 | /* |
1b939560 | 4142 | * Report expandable space on top-level, non-auxiliary devices |
0f676dc2 GM |
4143 | * only. The expandable space is reported in terms of metaslab |
4144 | * sized units since that determines how much space the pool | |
4145 | * can expand. | |
4146 | */ | |
4147 | if (vd->vdev_aux == NULL && tvd != NULL) { | |
4148 | vs->vs_esize = P2ALIGN( | |
4149 | vd->vdev_max_asize - vd->vdev_asize, | |
4150 | 1ULL << tvd->vdev_ms_shift); | |
4151 | } | |
9a49d3f3 | 4152 | |
6fe3498c RM |
4153 | vs->vs_configured_ashift = vd->vdev_top != NULL |
4154 | ? vd->vdev_top->vdev_ashift : vd->vdev_ashift; | |
4155 | vs->vs_logical_ashift = vd->vdev_logical_ashift; | |
4156 | vs->vs_physical_ashift = vd->vdev_physical_ashift; | |
4157 | ||
9a49d3f3 BB |
4158 | /* |
4159 | * Report fragmentation and rebuild progress for top-level, | |
4160 | * non-auxiliary, concrete devices. | |
4161 | */ | |
193a37cb | 4162 | if (vd->vdev_aux == NULL && vd == vd->vdev_top && |
a1d477c2 | 4163 | vdev_is_concrete(vd)) { |
cc99f275 DB |
4164 | vs->vs_fragmentation = (vd->vdev_mg != NULL) ? |
4165 | vd->vdev_mg->mg_fragmentation : 0; | |
193a37cb TH |
4166 | } |
4167 | } | |
4168 | ||
193a37cb | 4169 | vdev_get_stats_ex_impl(vd, vs, vsx); |
f3a7f661 | 4170 | mutex_exit(&vd->vdev_stat_lock); |
34dc7c2f BB |
4171 | } |
4172 | ||
193a37cb TH |
4173 | void |
4174 | vdev_get_stats(vdev_t *vd, vdev_stat_t *vs) | |
4175 | { | |
4176 | return (vdev_get_stats_ex(vd, vs, NULL)); | |
4177 | } | |
4178 | ||
34dc7c2f BB |
4179 | void |
4180 | vdev_clear_stats(vdev_t *vd) | |
4181 | { | |
4182 | mutex_enter(&vd->vdev_stat_lock); | |
4183 | vd->vdev_stat.vs_space = 0; | |
4184 | vd->vdev_stat.vs_dspace = 0; | |
4185 | vd->vdev_stat.vs_alloc = 0; | |
4186 | mutex_exit(&vd->vdev_stat_lock); | |
4187 | } | |
4188 | ||
428870ff BB |
4189 | void |
4190 | vdev_scan_stat_init(vdev_t *vd) | |
4191 | { | |
4192 | vdev_stat_t *vs = &vd->vdev_stat; | |
4193 | ||
1c27024e | 4194 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
4195 | vdev_scan_stat_init(vd->vdev_child[c]); |
4196 | ||
4197 | mutex_enter(&vd->vdev_stat_lock); | |
4198 | vs->vs_scan_processed = 0; | |
4199 | mutex_exit(&vd->vdev_stat_lock); | |
4200 | } | |
4201 | ||
34dc7c2f | 4202 | void |
b128c09f | 4203 | vdev_stat_update(zio_t *zio, uint64_t psize) |
34dc7c2f | 4204 | { |
fb5f0bc8 BB |
4205 | spa_t *spa = zio->io_spa; |
4206 | vdev_t *rvd = spa->spa_root_vdev; | |
b128c09f | 4207 | vdev_t *vd = zio->io_vd ? zio->io_vd : rvd; |
34dc7c2f BB |
4208 | vdev_t *pvd; |
4209 | uint64_t txg = zio->io_txg; | |
4210 | vdev_stat_t *vs = &vd->vdev_stat; | |
193a37cb | 4211 | vdev_stat_ex_t *vsx = &vd->vdev_stat_ex; |
34dc7c2f BB |
4212 | zio_type_t type = zio->io_type; |
4213 | int flags = zio->io_flags; | |
4214 | ||
b128c09f BB |
4215 | /* |
4216 | * If this i/o is a gang leader, it didn't do any actual work. | |
4217 | */ | |
4218 | if (zio->io_gang_tree) | |
4219 | return; | |
4220 | ||
34dc7c2f | 4221 | if (zio->io_error == 0) { |
b128c09f BB |
4222 | /* |
4223 | * If this is a root i/o, don't count it -- we've already | |
4224 | * counted the top-level vdevs, and vdev_get_stats() will | |
4225 | * aggregate them when asked. This reduces contention on | |
4226 | * the root vdev_stat_lock and implicitly handles blocks | |
4227 | * that compress away to holes, for which there is no i/o. | |
4228 | * (Holes never create vdev children, so all the counters | |
4229 | * remain zero, which is what we want.) | |
4230 | * | |
4231 | * Note: this only applies to successful i/o (io_error == 0) | |
4232 | * because unlike i/o counts, errors are not additive. | |
4233 | * When reading a ditto block, for example, failure of | |
4234 | * one top-level vdev does not imply a root-level error. | |
4235 | */ | |
4236 | if (vd == rvd) | |
4237 | return; | |
4238 | ||
4239 | ASSERT(vd == zio->io_vd); | |
fb5f0bc8 BB |
4240 | |
4241 | if (flags & ZIO_FLAG_IO_BYPASS) | |
4242 | return; | |
4243 | ||
4244 | mutex_enter(&vd->vdev_stat_lock); | |
4245 | ||
b128c09f | 4246 | if (flags & ZIO_FLAG_IO_REPAIR) { |
9a49d3f3 BB |
4247 | /* |
4248 | * Repair is the result of a resilver issued by the | |
4249 | * scan thread (spa_sync). | |
4250 | */ | |
572e2857 | 4251 | if (flags & ZIO_FLAG_SCAN_THREAD) { |
9a49d3f3 BB |
4252 | dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; |
4253 | dsl_scan_phys_t *scn_phys = &scn->scn_phys; | |
428870ff BB |
4254 | uint64_t *processed = &scn_phys->scn_processed; |
4255 | ||
428870ff BB |
4256 | if (vd->vdev_ops->vdev_op_leaf) |
4257 | atomic_add_64(processed, psize); | |
4258 | vs->vs_scan_processed += psize; | |
4259 | } | |
4260 | ||
9a49d3f3 BB |
4261 | /* |
4262 | * Repair is the result of a rebuild issued by the | |
4263 | * rebuild thread (vdev_rebuild_thread). | |
4264 | */ | |
4265 | if (zio->io_priority == ZIO_PRIORITY_REBUILD) { | |
4266 | vdev_t *tvd = vd->vdev_top; | |
4267 | vdev_rebuild_t *vr = &tvd->vdev_rebuild_config; | |
4268 | vdev_rebuild_phys_t *vrp = &vr->vr_rebuild_phys; | |
4269 | uint64_t *rebuilt = &vrp->vrp_bytes_rebuilt; | |
4270 | ||
4271 | if (vd->vdev_ops->vdev_op_leaf) | |
4272 | atomic_add_64(rebuilt, psize); | |
4273 | vs->vs_rebuild_processed += psize; | |
4274 | } | |
4275 | ||
fb5f0bc8 | 4276 | if (flags & ZIO_FLAG_SELF_HEAL) |
b128c09f | 4277 | vs->vs_self_healed += psize; |
34dc7c2f | 4278 | } |
fb5f0bc8 | 4279 | |
193a37cb TH |
4280 | /* |
4281 | * The bytes/ops/histograms are recorded at the leaf level and | |
4282 | * aggregated into the higher level vdevs in vdev_get_stats(). | |
4283 | */ | |
4eb0db42 TH |
4284 | if (vd->vdev_ops->vdev_op_leaf && |
4285 | (zio->io_priority < ZIO_PRIORITY_NUM_QUEUEABLE)) { | |
1b939560 | 4286 | zio_type_t vs_type = type; |
9a49d3f3 | 4287 | zio_priority_t priority = zio->io_priority; |
1b939560 BB |
4288 | |
4289 | /* | |
4290 | * TRIM ops and bytes are reported to user space as | |
4291 | * ZIO_TYPE_IOCTL. This is done to preserve the | |
4292 | * vdev_stat_t structure layout for user space. | |
4293 | */ | |
4294 | if (type == ZIO_TYPE_TRIM) | |
4295 | vs_type = ZIO_TYPE_IOCTL; | |
193a37cb | 4296 | |
9a49d3f3 BB |
4297 | /* |
4298 | * Solely for the purposes of 'zpool iostat -lqrw' | |
4299 | * reporting use the priority to catagorize the IO. | |
4300 | * Only the following are reported to user space: | |
4301 | * | |
4302 | * ZIO_PRIORITY_SYNC_READ, | |
4303 | * ZIO_PRIORITY_SYNC_WRITE, | |
4304 | * ZIO_PRIORITY_ASYNC_READ, | |
4305 | * ZIO_PRIORITY_ASYNC_WRITE, | |
4306 | * ZIO_PRIORITY_SCRUB, | |
4307 | * ZIO_PRIORITY_TRIM. | |
4308 | */ | |
4309 | if (priority == ZIO_PRIORITY_REBUILD) { | |
4310 | priority = ((type == ZIO_TYPE_WRITE) ? | |
4311 | ZIO_PRIORITY_ASYNC_WRITE : | |
4312 | ZIO_PRIORITY_SCRUB); | |
4313 | } else if (priority == ZIO_PRIORITY_INITIALIZING) { | |
4314 | ASSERT3U(type, ==, ZIO_TYPE_WRITE); | |
4315 | priority = ZIO_PRIORITY_ASYNC_WRITE; | |
4316 | } else if (priority == ZIO_PRIORITY_REMOVAL) { | |
4317 | priority = ((type == ZIO_TYPE_WRITE) ? | |
4318 | ZIO_PRIORITY_ASYNC_WRITE : | |
4319 | ZIO_PRIORITY_ASYNC_READ); | |
4320 | } | |
4321 | ||
1b939560 BB |
4322 | vs->vs_ops[vs_type]++; |
4323 | vs->vs_bytes[vs_type] += psize; | |
193a37cb | 4324 | |
7e945072 | 4325 | if (flags & ZIO_FLAG_DELEGATED) { |
9a49d3f3 | 4326 | vsx->vsx_agg_histo[priority] |
7e945072 TH |
4327 | [RQ_HISTO(zio->io_size)]++; |
4328 | } else { | |
9a49d3f3 | 4329 | vsx->vsx_ind_histo[priority] |
7e945072 TH |
4330 | [RQ_HISTO(zio->io_size)]++; |
4331 | } | |
4332 | ||
193a37cb | 4333 | if (zio->io_delta && zio->io_delay) { |
9a49d3f3 | 4334 | vsx->vsx_queue_histo[priority] |
7e945072 | 4335 | [L_HISTO(zio->io_delta - zio->io_delay)]++; |
193a37cb | 4336 | vsx->vsx_disk_histo[type] |
7e945072 | 4337 | [L_HISTO(zio->io_delay)]++; |
193a37cb | 4338 | vsx->vsx_total_histo[type] |
7e945072 | 4339 | [L_HISTO(zio->io_delta)]++; |
193a37cb TH |
4340 | } |
4341 | } | |
fb5f0bc8 BB |
4342 | |
4343 | mutex_exit(&vd->vdev_stat_lock); | |
34dc7c2f BB |
4344 | return; |
4345 | } | |
4346 | ||
4347 | if (flags & ZIO_FLAG_SPECULATIVE) | |
4348 | return; | |
4349 | ||
9babb374 BB |
4350 | /* |
4351 | * If this is an I/O error that is going to be retried, then ignore the | |
4352 | * error. Otherwise, the user may interpret B_FAILFAST I/O errors as | |
4353 | * hard errors, when in reality they can happen for any number of | |
4354 | * innocuous reasons (bus resets, MPxIO link failure, etc). | |
4355 | */ | |
4356 | if (zio->io_error == EIO && | |
4357 | !(zio->io_flags & ZIO_FLAG_IO_RETRY)) | |
4358 | return; | |
4359 | ||
428870ff BB |
4360 | /* |
4361 | * Intent logs writes won't propagate their error to the root | |
4362 | * I/O so don't mark these types of failures as pool-level | |
4363 | * errors. | |
4364 | */ | |
4365 | if (zio->io_vd == NULL && (zio->io_flags & ZIO_FLAG_DONT_PROPAGATE)) | |
4366 | return; | |
4367 | ||
a1d477c2 MA |
4368 | if (spa->spa_load_state == SPA_LOAD_NONE && |
4369 | type == ZIO_TYPE_WRITE && txg != 0 && | |
fb5f0bc8 | 4370 | (!(flags & ZIO_FLAG_IO_REPAIR) || |
572e2857 | 4371 | (flags & ZIO_FLAG_SCAN_THREAD) || |
428870ff | 4372 | spa->spa_claiming)) { |
fb5f0bc8 | 4373 | /* |
428870ff BB |
4374 | * This is either a normal write (not a repair), or it's |
4375 | * a repair induced by the scrub thread, or it's a repair | |
4376 | * made by zil_claim() during spa_load() in the first txg. | |
4377 | * In the normal case, we commit the DTL change in the same | |
4378 | * txg as the block was born. In the scrub-induced repair | |
4379 | * case, we know that scrubs run in first-pass syncing context, | |
4380 | * so we commit the DTL change in spa_syncing_txg(spa). | |
4381 | * In the zil_claim() case, we commit in spa_first_txg(spa). | |
fb5f0bc8 BB |
4382 | * |
4383 | * We currently do not make DTL entries for failed spontaneous | |
4384 | * self-healing writes triggered by normal (non-scrubbing) | |
4385 | * reads, because we have no transactional context in which to | |
4386 | * do so -- and it's not clear that it'd be desirable anyway. | |
4387 | */ | |
4388 | if (vd->vdev_ops->vdev_op_leaf) { | |
4389 | uint64_t commit_txg = txg; | |
572e2857 | 4390 | if (flags & ZIO_FLAG_SCAN_THREAD) { |
fb5f0bc8 BB |
4391 | ASSERT(flags & ZIO_FLAG_IO_REPAIR); |
4392 | ASSERT(spa_sync_pass(spa) == 1); | |
4393 | vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1); | |
428870ff BB |
4394 | commit_txg = spa_syncing_txg(spa); |
4395 | } else if (spa->spa_claiming) { | |
4396 | ASSERT(flags & ZIO_FLAG_IO_REPAIR); | |
4397 | commit_txg = spa_first_txg(spa); | |
fb5f0bc8 | 4398 | } |
428870ff | 4399 | ASSERT(commit_txg >= spa_syncing_txg(spa)); |
fb5f0bc8 | 4400 | if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1)) |
34dc7c2f | 4401 | return; |
fb5f0bc8 BB |
4402 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) |
4403 | vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1); | |
4404 | vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg); | |
34dc7c2f | 4405 | } |
fb5f0bc8 BB |
4406 | if (vd != rvd) |
4407 | vdev_dtl_dirty(vd, DTL_MISSING, txg, 1); | |
34dc7c2f BB |
4408 | } |
4409 | } | |
4410 | ||
cc99f275 DB |
4411 | int64_t |
4412 | vdev_deflated_space(vdev_t *vd, int64_t space) | |
4413 | { | |
4414 | ASSERT((space & (SPA_MINBLOCKSIZE-1)) == 0); | |
4415 | ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache); | |
4416 | ||
4417 | return ((space >> SPA_MINBLOCKSHIFT) * vd->vdev_deflate_ratio); | |
4418 | } | |
4419 | ||
34dc7c2f | 4420 | /* |
1b939560 BB |
4421 | * Update the in-core space usage stats for this vdev, its metaslab class, |
4422 | * and the root vdev. | |
34dc7c2f BB |
4423 | */ |
4424 | void | |
428870ff BB |
4425 | vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta, |
4426 | int64_t space_delta) | |
34dc7c2f | 4427 | { |
cc99f275 | 4428 | int64_t dspace_delta; |
34dc7c2f BB |
4429 | spa_t *spa = vd->vdev_spa; |
4430 | vdev_t *rvd = spa->spa_root_vdev; | |
4431 | ||
4432 | ASSERT(vd == vd->vdev_top); | |
4433 | ||
4434 | /* | |
4435 | * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion | |
4436 | * factor. We must calculate this here and not at the root vdev | |
4437 | * because the root vdev's psize-to-asize is simply the max of its | |
e1cfd73f | 4438 | * children's, thus not accurate enough for us. |
34dc7c2f | 4439 | */ |
cc99f275 | 4440 | dspace_delta = vdev_deflated_space(vd, space_delta); |
34dc7c2f BB |
4441 | |
4442 | mutex_enter(&vd->vdev_stat_lock); | |
7558997d SD |
4443 | /* ensure we won't underflow */ |
4444 | if (alloc_delta < 0) { | |
4445 | ASSERT3U(vd->vdev_stat.vs_alloc, >=, -alloc_delta); | |
4446 | } | |
4447 | ||
34dc7c2f | 4448 | vd->vdev_stat.vs_alloc += alloc_delta; |
428870ff | 4449 | vd->vdev_stat.vs_space += space_delta; |
34dc7c2f BB |
4450 | vd->vdev_stat.vs_dspace += dspace_delta; |
4451 | mutex_exit(&vd->vdev_stat_lock); | |
4452 | ||
cc99f275 DB |
4453 | /* every class but log contributes to root space stats */ |
4454 | if (vd->vdev_mg != NULL && !vd->vdev_islog) { | |
7558997d | 4455 | ASSERT(!vd->vdev_isl2cache); |
34dc7c2f | 4456 | mutex_enter(&rvd->vdev_stat_lock); |
34dc7c2f | 4457 | rvd->vdev_stat.vs_alloc += alloc_delta; |
428870ff | 4458 | rvd->vdev_stat.vs_space += space_delta; |
34dc7c2f BB |
4459 | rvd->vdev_stat.vs_dspace += dspace_delta; |
4460 | mutex_exit(&rvd->vdev_stat_lock); | |
4461 | } | |
cc99f275 | 4462 | /* Note: metaslab_class_space_update moved to metaslab_space_update */ |
34dc7c2f BB |
4463 | } |
4464 | ||
4465 | /* | |
4466 | * Mark a top-level vdev's config as dirty, placing it on the dirty list | |
4467 | * so that it will be written out next time the vdev configuration is synced. | |
4468 | * If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs. | |
4469 | */ | |
4470 | void | |
4471 | vdev_config_dirty(vdev_t *vd) | |
4472 | { | |
4473 | spa_t *spa = vd->vdev_spa; | |
4474 | vdev_t *rvd = spa->spa_root_vdev; | |
4475 | int c; | |
4476 | ||
572e2857 BB |
4477 | ASSERT(spa_writeable(spa)); |
4478 | ||
34dc7c2f | 4479 | /* |
9babb374 BB |
4480 | * If this is an aux vdev (as with l2cache and spare devices), then we |
4481 | * update the vdev config manually and set the sync flag. | |
b128c09f BB |
4482 | */ |
4483 | if (vd->vdev_aux != NULL) { | |
4484 | spa_aux_vdev_t *sav = vd->vdev_aux; | |
4485 | nvlist_t **aux; | |
4486 | uint_t naux; | |
4487 | ||
4488 | for (c = 0; c < sav->sav_count; c++) { | |
4489 | if (sav->sav_vdevs[c] == vd) | |
4490 | break; | |
4491 | } | |
4492 | ||
4493 | if (c == sav->sav_count) { | |
4494 | /* | |
4495 | * We're being removed. There's nothing more to do. | |
4496 | */ | |
4497 | ASSERT(sav->sav_sync == B_TRUE); | |
4498 | return; | |
4499 | } | |
4500 | ||
4501 | sav->sav_sync = B_TRUE; | |
4502 | ||
9babb374 BB |
4503 | if (nvlist_lookup_nvlist_array(sav->sav_config, |
4504 | ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) { | |
4505 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
4506 | ZPOOL_CONFIG_SPARES, &aux, &naux) == 0); | |
4507 | } | |
b128c09f BB |
4508 | |
4509 | ASSERT(c < naux); | |
4510 | ||
4511 | /* | |
4512 | * Setting the nvlist in the middle if the array is a little | |
4513 | * sketchy, but it will work. | |
4514 | */ | |
4515 | nvlist_free(aux[c]); | |
428870ff | 4516 | aux[c] = vdev_config_generate(spa, vd, B_TRUE, 0); |
b128c09f BB |
4517 | |
4518 | return; | |
4519 | } | |
4520 | ||
4521 | /* | |
4522 | * The dirty list is protected by the SCL_CONFIG lock. The caller | |
4523 | * must either hold SCL_CONFIG as writer, or must be the sync thread | |
4524 | * (which holds SCL_CONFIG as reader). There's only one sync thread, | |
34dc7c2f BB |
4525 | * so this is sufficient to ensure mutual exclusion. |
4526 | */ | |
b128c09f BB |
4527 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || |
4528 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4529 | spa_config_held(spa, SCL_CONFIG, RW_READER))); | |
34dc7c2f BB |
4530 | |
4531 | if (vd == rvd) { | |
4532 | for (c = 0; c < rvd->vdev_children; c++) | |
4533 | vdev_config_dirty(rvd->vdev_child[c]); | |
4534 | } else { | |
4535 | ASSERT(vd == vd->vdev_top); | |
4536 | ||
428870ff | 4537 | if (!list_link_active(&vd->vdev_config_dirty_node) && |
a1d477c2 | 4538 | vdev_is_concrete(vd)) { |
b128c09f | 4539 | list_insert_head(&spa->spa_config_dirty_list, vd); |
a1d477c2 | 4540 | } |
34dc7c2f BB |
4541 | } |
4542 | } | |
4543 | ||
4544 | void | |
4545 | vdev_config_clean(vdev_t *vd) | |
4546 | { | |
4547 | spa_t *spa = vd->vdev_spa; | |
4548 | ||
b128c09f BB |
4549 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || |
4550 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4551 | spa_config_held(spa, SCL_CONFIG, RW_READER))); | |
34dc7c2f | 4552 | |
b128c09f BB |
4553 | ASSERT(list_link_active(&vd->vdev_config_dirty_node)); |
4554 | list_remove(&spa->spa_config_dirty_list, vd); | |
34dc7c2f BB |
4555 | } |
4556 | ||
b128c09f BB |
4557 | /* |
4558 | * Mark a top-level vdev's state as dirty, so that the next pass of | |
4559 | * spa_sync() can convert this into vdev_config_dirty(). We distinguish | |
4560 | * the state changes from larger config changes because they require | |
4561 | * much less locking, and are often needed for administrative actions. | |
4562 | */ | |
4563 | void | |
4564 | vdev_state_dirty(vdev_t *vd) | |
4565 | { | |
4566 | spa_t *spa = vd->vdev_spa; | |
4567 | ||
572e2857 | 4568 | ASSERT(spa_writeable(spa)); |
b128c09f BB |
4569 | ASSERT(vd == vd->vdev_top); |
4570 | ||
4571 | /* | |
4572 | * The state list is protected by the SCL_STATE lock. The caller | |
4573 | * must either hold SCL_STATE as writer, or must be the sync thread | |
4574 | * (which holds SCL_STATE as reader). There's only one sync thread, | |
4575 | * so this is sufficient to ensure mutual exclusion. | |
4576 | */ | |
4577 | ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || | |
4578 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4579 | spa_config_held(spa, SCL_STATE, RW_READER))); | |
4580 | ||
a1d477c2 MA |
4581 | if (!list_link_active(&vd->vdev_state_dirty_node) && |
4582 | vdev_is_concrete(vd)) | |
b128c09f BB |
4583 | list_insert_head(&spa->spa_state_dirty_list, vd); |
4584 | } | |
4585 | ||
4586 | void | |
4587 | vdev_state_clean(vdev_t *vd) | |
4588 | { | |
4589 | spa_t *spa = vd->vdev_spa; | |
4590 | ||
4591 | ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || | |
4592 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
4593 | spa_config_held(spa, SCL_STATE, RW_READER))); | |
4594 | ||
4595 | ASSERT(list_link_active(&vd->vdev_state_dirty_node)); | |
4596 | list_remove(&spa->spa_state_dirty_list, vd); | |
4597 | } | |
4598 | ||
4599 | /* | |
4600 | * Propagate vdev state up from children to parent. | |
4601 | */ | |
34dc7c2f BB |
4602 | void |
4603 | vdev_propagate_state(vdev_t *vd) | |
4604 | { | |
fb5f0bc8 BB |
4605 | spa_t *spa = vd->vdev_spa; |
4606 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f BB |
4607 | int degraded = 0, faulted = 0; |
4608 | int corrupted = 0; | |
34dc7c2f BB |
4609 | vdev_t *child; |
4610 | ||
4611 | if (vd->vdev_children > 0) { | |
1c27024e | 4612 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f | 4613 | child = vd->vdev_child[c]; |
b128c09f | 4614 | |
428870ff | 4615 | /* |
a1d477c2 MA |
4616 | * Don't factor holes or indirect vdevs into the |
4617 | * decision. | |
428870ff | 4618 | */ |
a1d477c2 | 4619 | if (!vdev_is_concrete(child)) |
428870ff BB |
4620 | continue; |
4621 | ||
b128c09f | 4622 | if (!vdev_readable(child) || |
fb5f0bc8 | 4623 | (!vdev_writeable(child) && spa_writeable(spa))) { |
b128c09f BB |
4624 | /* |
4625 | * Root special: if there is a top-level log | |
4626 | * device, treat the root vdev as if it were | |
4627 | * degraded. | |
4628 | */ | |
4629 | if (child->vdev_islog && vd == rvd) | |
4630 | degraded++; | |
4631 | else | |
4632 | faulted++; | |
4633 | } else if (child->vdev_state <= VDEV_STATE_DEGRADED) { | |
34dc7c2f | 4634 | degraded++; |
b128c09f | 4635 | } |
34dc7c2f BB |
4636 | |
4637 | if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA) | |
4638 | corrupted++; | |
4639 | } | |
4640 | ||
4641 | vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded); | |
4642 | ||
4643 | /* | |
b128c09f | 4644 | * Root special: if there is a top-level vdev that cannot be |
34dc7c2f BB |
4645 | * opened due to corrupted metadata, then propagate the root |
4646 | * vdev's aux state as 'corrupt' rather than 'insufficient | |
4647 | * replicas'. | |
4648 | */ | |
4649 | if (corrupted && vd == rvd && | |
4650 | rvd->vdev_state == VDEV_STATE_CANT_OPEN) | |
4651 | vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
4652 | VDEV_AUX_CORRUPT_DATA); | |
4653 | } | |
4654 | ||
b128c09f | 4655 | if (vd->vdev_parent) |
34dc7c2f BB |
4656 | vdev_propagate_state(vd->vdev_parent); |
4657 | } | |
4658 | ||
4659 | /* | |
4660 | * Set a vdev's state. If this is during an open, we don't update the parent | |
4661 | * state, because we're in the process of opening children depth-first. | |
4662 | * Otherwise, we propagate the change to the parent. | |
4663 | * | |
4664 | * If this routine places a device in a faulted state, an appropriate ereport is | |
4665 | * generated. | |
4666 | */ | |
4667 | void | |
4668 | vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux) | |
4669 | { | |
4670 | uint64_t save_state; | |
b128c09f | 4671 | spa_t *spa = vd->vdev_spa; |
34dc7c2f BB |
4672 | |
4673 | if (state == vd->vdev_state) { | |
976246fa DB |
4674 | /* |
4675 | * Since vdev_offline() code path is already in an offline | |
4676 | * state we can miss a statechange event to OFFLINE. Check | |
4677 | * the previous state to catch this condition. | |
4678 | */ | |
4679 | if (vd->vdev_ops->vdev_op_leaf && | |
4680 | (state == VDEV_STATE_OFFLINE) && | |
4681 | (vd->vdev_prevstate >= VDEV_STATE_FAULTED)) { | |
4682 | /* post an offline state change */ | |
4683 | zfs_post_state_change(spa, vd, vd->vdev_prevstate); | |
4684 | } | |
34dc7c2f BB |
4685 | vd->vdev_stat.vs_aux = aux; |
4686 | return; | |
4687 | } | |
4688 | ||
4689 | save_state = vd->vdev_state; | |
4690 | ||
4691 | vd->vdev_state = state; | |
4692 | vd->vdev_stat.vs_aux = aux; | |
4693 | ||
4694 | /* | |
4695 | * If we are setting the vdev state to anything but an open state, then | |
428870ff BB |
4696 | * always close the underlying device unless the device has requested |
4697 | * a delayed close (i.e. we're about to remove or fault the device). | |
4698 | * Otherwise, we keep accessible but invalid devices open forever. | |
4699 | * We don't call vdev_close() itself, because that implies some extra | |
4700 | * checks (offline, etc) that we don't want here. This is limited to | |
4701 | * leaf devices, because otherwise closing the device will affect other | |
4702 | * children. | |
34dc7c2f | 4703 | */ |
428870ff BB |
4704 | if (!vd->vdev_delayed_close && vdev_is_dead(vd) && |
4705 | vd->vdev_ops->vdev_op_leaf) | |
34dc7c2f BB |
4706 | vd->vdev_ops->vdev_op_close(vd); |
4707 | ||
4708 | if (vd->vdev_removed && | |
4709 | state == VDEV_STATE_CANT_OPEN && | |
4710 | (aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) { | |
4711 | /* | |
4712 | * If the previous state is set to VDEV_STATE_REMOVED, then this | |
4713 | * device was previously marked removed and someone attempted to | |
4714 | * reopen it. If this failed due to a nonexistent device, then | |
4715 | * keep the device in the REMOVED state. We also let this be if | |
4716 | * it is one of our special test online cases, which is only | |
4717 | * attempting to online the device and shouldn't generate an FMA | |
4718 | * fault. | |
4719 | */ | |
4720 | vd->vdev_state = VDEV_STATE_REMOVED; | |
4721 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; | |
4722 | } else if (state == VDEV_STATE_REMOVED) { | |
34dc7c2f BB |
4723 | vd->vdev_removed = B_TRUE; |
4724 | } else if (state == VDEV_STATE_CANT_OPEN) { | |
4725 | /* | |
572e2857 BB |
4726 | * If we fail to open a vdev during an import or recovery, we |
4727 | * mark it as "not available", which signifies that it was | |
4728 | * never there to begin with. Failure to open such a device | |
4729 | * is not considered an error. | |
34dc7c2f | 4730 | */ |
572e2857 BB |
4731 | if ((spa_load_state(spa) == SPA_LOAD_IMPORT || |
4732 | spa_load_state(spa) == SPA_LOAD_RECOVER) && | |
34dc7c2f BB |
4733 | vd->vdev_ops->vdev_op_leaf) |
4734 | vd->vdev_not_present = 1; | |
4735 | ||
4736 | /* | |
4737 | * Post the appropriate ereport. If the 'prevstate' field is | |
4738 | * set to something other than VDEV_STATE_UNKNOWN, it indicates | |
4739 | * that this is part of a vdev_reopen(). In this case, we don't | |
4740 | * want to post the ereport if the device was already in the | |
4741 | * CANT_OPEN state beforehand. | |
4742 | * | |
4743 | * If the 'checkremove' flag is set, then this is an attempt to | |
4744 | * online the device in response to an insertion event. If we | |
4745 | * hit this case, then we have detected an insertion event for a | |
4746 | * faulted or offline device that wasn't in the removed state. | |
4747 | * In this scenario, we don't post an ereport because we are | |
4748 | * about to replace the device, or attempt an online with | |
4749 | * vdev_forcefault, which will generate the fault for us. | |
4750 | */ | |
4751 | if ((vd->vdev_prevstate != state || vd->vdev_forcefault) && | |
4752 | !vd->vdev_not_present && !vd->vdev_checkremove && | |
b128c09f | 4753 | vd != spa->spa_root_vdev) { |
34dc7c2f BB |
4754 | const char *class; |
4755 | ||
4756 | switch (aux) { | |
4757 | case VDEV_AUX_OPEN_FAILED: | |
4758 | class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED; | |
4759 | break; | |
4760 | case VDEV_AUX_CORRUPT_DATA: | |
4761 | class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA; | |
4762 | break; | |
4763 | case VDEV_AUX_NO_REPLICAS: | |
4764 | class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS; | |
4765 | break; | |
4766 | case VDEV_AUX_BAD_GUID_SUM: | |
4767 | class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM; | |
4768 | break; | |
4769 | case VDEV_AUX_TOO_SMALL: | |
4770 | class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL; | |
4771 | break; | |
4772 | case VDEV_AUX_BAD_LABEL: | |
4773 | class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL; | |
4774 | break; | |
ff61d1a4 | 4775 | case VDEV_AUX_BAD_ASHIFT: |
4776 | class = FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT; | |
4777 | break; | |
34dc7c2f BB |
4778 | default: |
4779 | class = FM_EREPORT_ZFS_DEVICE_UNKNOWN; | |
4780 | } | |
4781 | ||
1144586b | 4782 | (void) zfs_ereport_post(class, spa, vd, NULL, NULL, |
4f072827 | 4783 | save_state); |
34dc7c2f BB |
4784 | } |
4785 | ||
4786 | /* Erase any notion of persistent removed state */ | |
4787 | vd->vdev_removed = B_FALSE; | |
4788 | } else { | |
4789 | vd->vdev_removed = B_FALSE; | |
4790 | } | |
4791 | ||
d02ca379 DB |
4792 | /* |
4793 | * Notify ZED of any significant state-change on a leaf vdev. | |
4794 | * | |
d02ca379 | 4795 | */ |
6078881a TH |
4796 | if (vd->vdev_ops->vdev_op_leaf) { |
4797 | /* preserve original state from a vdev_reopen() */ | |
4798 | if ((vd->vdev_prevstate != VDEV_STATE_UNKNOWN) && | |
4799 | (vd->vdev_prevstate != vd->vdev_state) && | |
4800 | (save_state <= VDEV_STATE_CLOSED)) | |
4801 | save_state = vd->vdev_prevstate; | |
4802 | ||
4803 | /* filter out state change due to initial vdev_open */ | |
4804 | if (save_state > VDEV_STATE_CLOSED) | |
4805 | zfs_post_state_change(spa, vd, save_state); | |
d02ca379 DB |
4806 | } |
4807 | ||
9babb374 BB |
4808 | if (!isopen && vd->vdev_parent) |
4809 | vdev_propagate_state(vd->vdev_parent); | |
34dc7c2f | 4810 | } |
b128c09f | 4811 | |
6cb8e530 PZ |
4812 | boolean_t |
4813 | vdev_children_are_offline(vdev_t *vd) | |
4814 | { | |
4815 | ASSERT(!vd->vdev_ops->vdev_op_leaf); | |
4816 | ||
4817 | for (uint64_t i = 0; i < vd->vdev_children; i++) { | |
4818 | if (vd->vdev_child[i]->vdev_state != VDEV_STATE_OFFLINE) | |
4819 | return (B_FALSE); | |
4820 | } | |
4821 | ||
4822 | return (B_TRUE); | |
4823 | } | |
4824 | ||
b128c09f BB |
4825 | /* |
4826 | * Check the vdev configuration to ensure that it's capable of supporting | |
e550644f | 4827 | * a root pool. We do not support partial configuration. |
b128c09f BB |
4828 | */ |
4829 | boolean_t | |
4830 | vdev_is_bootable(vdev_t *vd) | |
4831 | { | |
b128c09f | 4832 | if (!vd->vdev_ops->vdev_op_leaf) { |
e550644f | 4833 | const char *vdev_type = vd->vdev_ops->vdev_op_type; |
b128c09f | 4834 | |
a1d477c2 MA |
4835 | if (strcmp(vdev_type, VDEV_TYPE_MISSING) == 0 || |
4836 | strcmp(vdev_type, VDEV_TYPE_INDIRECT) == 0) { | |
b128c09f | 4837 | return (B_FALSE); |
a1d477c2 | 4838 | } |
b128c09f BB |
4839 | } |
4840 | ||
e550644f | 4841 | for (int c = 0; c < vd->vdev_children; c++) { |
b128c09f BB |
4842 | if (!vdev_is_bootable(vd->vdev_child[c])) |
4843 | return (B_FALSE); | |
4844 | } | |
4845 | return (B_TRUE); | |
4846 | } | |
9babb374 | 4847 | |
a1d477c2 MA |
4848 | boolean_t |
4849 | vdev_is_concrete(vdev_t *vd) | |
4850 | { | |
4851 | vdev_ops_t *ops = vd->vdev_ops; | |
4852 | if (ops == &vdev_indirect_ops || ops == &vdev_hole_ops || | |
4853 | ops == &vdev_missing_ops || ops == &vdev_root_ops) { | |
4854 | return (B_FALSE); | |
4855 | } else { | |
4856 | return (B_TRUE); | |
4857 | } | |
4858 | } | |
4859 | ||
572e2857 BB |
4860 | /* |
4861 | * Determine if a log device has valid content. If the vdev was | |
4862 | * removed or faulted in the MOS config then we know that | |
4863 | * the content on the log device has already been written to the pool. | |
4864 | */ | |
4865 | boolean_t | |
4866 | vdev_log_state_valid(vdev_t *vd) | |
4867 | { | |
4868 | if (vd->vdev_ops->vdev_op_leaf && !vd->vdev_faulted && | |
4869 | !vd->vdev_removed) | |
4870 | return (B_TRUE); | |
4871 | ||
1c27024e | 4872 | for (int c = 0; c < vd->vdev_children; c++) |
572e2857 BB |
4873 | if (vdev_log_state_valid(vd->vdev_child[c])) |
4874 | return (B_TRUE); | |
4875 | ||
4876 | return (B_FALSE); | |
4877 | } | |
4878 | ||
9babb374 BB |
4879 | /* |
4880 | * Expand a vdev if possible. | |
4881 | */ | |
4882 | void | |
4883 | vdev_expand(vdev_t *vd, uint64_t txg) | |
4884 | { | |
4885 | ASSERT(vd->vdev_top == vd); | |
4886 | ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); | |
7637ef8d | 4887 | ASSERT(vdev_is_concrete(vd)); |
9babb374 | 4888 | |
a1d477c2 MA |
4889 | vdev_set_deflate_ratio(vd); |
4890 | ||
cc99f275 DB |
4891 | if ((vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count && |
4892 | vdev_is_concrete(vd)) { | |
4893 | vdev_metaslab_group_create(vd); | |
9babb374 BB |
4894 | VERIFY(vdev_metaslab_init(vd, txg) == 0); |
4895 | vdev_config_dirty(vd); | |
4896 | } | |
4897 | } | |
428870ff BB |
4898 | |
4899 | /* | |
4900 | * Split a vdev. | |
4901 | */ | |
4902 | void | |
4903 | vdev_split(vdev_t *vd) | |
4904 | { | |
4905 | vdev_t *cvd, *pvd = vd->vdev_parent; | |
4906 | ||
4907 | vdev_remove_child(pvd, vd); | |
4908 | vdev_compact_children(pvd); | |
4909 | ||
4910 | cvd = pvd->vdev_child[0]; | |
4911 | if (pvd->vdev_children == 1) { | |
4912 | vdev_remove_parent(cvd); | |
4913 | cvd->vdev_splitting = B_TRUE; | |
4914 | } | |
4915 | vdev_propagate_state(cvd); | |
4916 | } | |
c28b2279 | 4917 | |
cc92e9d0 | 4918 | void |
8fb1ede1 | 4919 | vdev_deadman(vdev_t *vd, char *tag) |
cc92e9d0 | 4920 | { |
1c27024e | 4921 | for (int c = 0; c < vd->vdev_children; c++) { |
cc92e9d0 GW |
4922 | vdev_t *cvd = vd->vdev_child[c]; |
4923 | ||
8fb1ede1 | 4924 | vdev_deadman(cvd, tag); |
cc92e9d0 GW |
4925 | } |
4926 | ||
4927 | if (vd->vdev_ops->vdev_op_leaf) { | |
4928 | vdev_queue_t *vq = &vd->vdev_queue; | |
4929 | ||
4930 | mutex_enter(&vq->vq_lock); | |
e8b96c60 | 4931 | if (avl_numnodes(&vq->vq_active_tree) > 0) { |
cc92e9d0 GW |
4932 | spa_t *spa = vd->vdev_spa; |
4933 | zio_t *fio; | |
4934 | uint64_t delta; | |
4935 | ||
8fb1ede1 BB |
4936 | zfs_dbgmsg("slow vdev: %s has %d active IOs", |
4937 | vd->vdev_path, avl_numnodes(&vq->vq_active_tree)); | |
4938 | ||
cc92e9d0 GW |
4939 | /* |
4940 | * Look at the head of all the pending queues, | |
4941 | * if any I/O has been outstanding for longer than | |
8fb1ede1 | 4942 | * the spa_deadman_synctime invoke the deadman logic. |
cc92e9d0 | 4943 | */ |
e8b96c60 | 4944 | fio = avl_first(&vq->vq_active_tree); |
cb682a17 | 4945 | delta = gethrtime() - fio->io_timestamp; |
8fb1ede1 BB |
4946 | if (delta > spa_deadman_synctime(spa)) |
4947 | zio_deadman(fio, tag); | |
cc92e9d0 GW |
4948 | } |
4949 | mutex_exit(&vq->vq_lock); | |
4950 | } | |
4951 | } | |
4952 | ||
80a91e74 | 4953 | void |
3c819a2c | 4954 | vdev_defer_resilver(vdev_t *vd) |
80a91e74 | 4955 | { |
3c819a2c | 4956 | ASSERT(vd->vdev_ops->vdev_op_leaf); |
4021ba4c | 4957 | |
3c819a2c JP |
4958 | vd->vdev_resilver_deferred = B_TRUE; |
4959 | vd->vdev_spa->spa_resilver_deferred = B_TRUE; | |
4960 | } | |
4961 | ||
4962 | /* | |
4963 | * Clears the resilver deferred flag on all leaf devs under vd. Returns | |
4964 | * B_TRUE if we have devices that need to be resilvered and are available to | |
4965 | * accept resilver I/Os. | |
4966 | */ | |
4967 | boolean_t | |
4968 | vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx) | |
4969 | { | |
4970 | boolean_t resilver_needed = B_FALSE; | |
4971 | spa_t *spa = vd->vdev_spa; | |
4972 | ||
4973 | for (int c = 0; c < vd->vdev_children; c++) { | |
4974 | vdev_t *cvd = vd->vdev_child[c]; | |
4975 | resilver_needed |= vdev_clear_resilver_deferred(cvd, tx); | |
4021ba4c TC |
4976 | } |
4977 | ||
3c819a2c JP |
4978 | if (vd == spa->spa_root_vdev && |
4979 | spa_feature_is_active(spa, SPA_FEATURE_RESILVER_DEFER)) { | |
4980 | spa_feature_decr(spa, SPA_FEATURE_RESILVER_DEFER, tx); | |
4981 | vdev_config_dirty(vd); | |
4982 | spa->spa_resilver_deferred = B_FALSE; | |
4983 | return (resilver_needed); | |
4984 | } | |
4985 | ||
4986 | if (!vdev_is_concrete(vd) || vd->vdev_aux || | |
4987 | !vd->vdev_ops->vdev_op_leaf) | |
4988 | return (resilver_needed); | |
4989 | ||
4990 | vd->vdev_resilver_deferred = B_FALSE; | |
4991 | ||
4992 | return (!vdev_is_dead(vd) && !vd->vdev_offline && | |
4993 | vdev_resilver_needed(vd, NULL, NULL)); | |
80a91e74 TC |
4994 | } |
4995 | ||
1b939560 BB |
4996 | /* |
4997 | * Translate a logical range to the physical range for the specified vdev_t. | |
4998 | * This function is initially called with a leaf vdev and will walk each | |
4999 | * parent vdev until it reaches a top-level vdev. Once the top-level is | |
5000 | * reached the physical range is initialized and the recursive function | |
5001 | * begins to unwind. As it unwinds it calls the parent's vdev specific | |
5002 | * translation function to do the real conversion. | |
5003 | */ | |
5004 | void | |
ca577779 PD |
5005 | vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs, |
5006 | range_seg64_t *physical_rs) | |
1b939560 BB |
5007 | { |
5008 | /* | |
5009 | * Walk up the vdev tree | |
5010 | */ | |
5011 | if (vd != vd->vdev_top) { | |
5012 | vdev_xlate(vd->vdev_parent, logical_rs, physical_rs); | |
5013 | } else { | |
5014 | /* | |
5015 | * We've reached the top-level vdev, initialize the | |
5016 | * physical range to the logical range and start to | |
5017 | * unwind. | |
5018 | */ | |
5019 | physical_rs->rs_start = logical_rs->rs_start; | |
5020 | physical_rs->rs_end = logical_rs->rs_end; | |
5021 | return; | |
5022 | } | |
5023 | ||
5024 | vdev_t *pvd = vd->vdev_parent; | |
5025 | ASSERT3P(pvd, !=, NULL); | |
5026 | ASSERT3P(pvd->vdev_ops->vdev_op_xlate, !=, NULL); | |
5027 | ||
5028 | /* | |
5029 | * As this recursive function unwinds, translate the logical | |
5030 | * range into its physical components by calling the | |
5031 | * vdev specific translate function. | |
5032 | */ | |
ca577779 | 5033 | range_seg64_t intermediate = { 0 }; |
1b939560 BB |
5034 | pvd->vdev_ops->vdev_op_xlate(vd, physical_rs, &intermediate); |
5035 | ||
5036 | physical_rs->rs_start = intermediate.rs_start; | |
5037 | physical_rs->rs_end = intermediate.rs_end; | |
5038 | } | |
5039 | ||
e60e158e JG |
5040 | /* |
5041 | * Look at the vdev tree and determine whether any devices are currently being | |
5042 | * replaced. | |
5043 | */ | |
5044 | boolean_t | |
5045 | vdev_replace_in_progress(vdev_t *vdev) | |
5046 | { | |
5047 | ASSERT(spa_config_held(vdev->vdev_spa, SCL_ALL, RW_READER) != 0); | |
5048 | ||
5049 | if (vdev->vdev_ops == &vdev_replacing_ops) | |
5050 | return (B_TRUE); | |
5051 | ||
5052 | /* | |
5053 | * A 'spare' vdev indicates that we have a replace in progress, unless | |
5054 | * it has exactly two children, and the second, the hot spare, has | |
5055 | * finished being resilvered. | |
5056 | */ | |
5057 | if (vdev->vdev_ops == &vdev_spare_ops && (vdev->vdev_children > 2 || | |
5058 | !vdev_dtl_empty(vdev->vdev_child[1], DTL_MISSING))) | |
5059 | return (B_TRUE); | |
5060 | ||
5061 | for (int i = 0; i < vdev->vdev_children; i++) { | |
5062 | if (vdev_replace_in_progress(vdev->vdev_child[i])) | |
5063 | return (B_TRUE); | |
5064 | } | |
5065 | ||
5066 | return (B_FALSE); | |
5067 | } | |
5068 | ||
c28b2279 BB |
5069 | EXPORT_SYMBOL(vdev_fault); |
5070 | EXPORT_SYMBOL(vdev_degrade); | |
5071 | EXPORT_SYMBOL(vdev_online); | |
5072 | EXPORT_SYMBOL(vdev_offline); | |
5073 | EXPORT_SYMBOL(vdev_clear); | |
1b939560 | 5074 | |
4ea3f864 | 5075 | /* BEGIN CSTYLED */ |
03fdcb9a | 5076 | ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_count, INT, ZMOD_RW, |
e4e94ca3 | 5077 | "Target number of metaslabs per top-level vdev"); |
80d52c39 | 5078 | |
03fdcb9a | 5079 | ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_shift, INT, ZMOD_RW, |
93e28d66 SD |
5080 | "Default limit for metaslab size"); |
5081 | ||
03fdcb9a | 5082 | ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, min_ms_count, INT, ZMOD_RW, |
d2734cce SD |
5083 | "Minimum number of metaslabs per top-level vdev"); |
5084 | ||
03fdcb9a | 5085 | ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, ms_count_limit, INT, ZMOD_RW, |
e4e94ca3 DB |
5086 | "Practical upper limit of total metaslabs per top-level vdev"); |
5087 | ||
03fdcb9a | 5088 | ZFS_MODULE_PARAM(zfs, zfs_, slow_io_events_per_second, UINT, ZMOD_RW, |
ad796b8a | 5089 | "Rate limit slow IO (delay) events to this many per second"); |
80d52c39 | 5090 | |
03fdcb9a MM |
5091 | ZFS_MODULE_PARAM(zfs, zfs_, checksum_events_per_second, UINT, ZMOD_RW, |
5092 | "Rate limit checksum events to this many checksum errors per second " | |
5093 | "(do not set below zed threshold)."); | |
02638a30 | 5094 | |
03fdcb9a | 5095 | ZFS_MODULE_PARAM(zfs, zfs_, scan_ignore_errors, INT, ZMOD_RW, |
02638a30 | 5096 | "Ignore errors during resilver/scrub"); |
6cb8e530 | 5097 | |
03fdcb9a | 5098 | ZFS_MODULE_PARAM(zfs_vdev, vdev_, validate_skip, INT, ZMOD_RW, |
6cb8e530 | 5099 | "Bypass vdev_validate()"); |
53b1f5ea | 5100 | |
03fdcb9a MM |
5101 | ZFS_MODULE_PARAM(zfs, zfs_, nocacheflush, INT, ZMOD_RW, |
5102 | "Disable cache flushes"); | |
6fe3498c RM |
5103 | |
5104 | ZFS_MODULE_PARAM_CALL(zfs_vdev, zfs_vdev_, min_auto_ashift, | |
5105 | param_set_min_auto_ashift, param_get_ulong, ZMOD_RW, | |
5106 | "Minimum ashift used when creating new top-level vdevs"); | |
5107 | ||
5108 | ZFS_MODULE_PARAM_CALL(zfs_vdev, zfs_vdev_, max_auto_ashift, | |
5109 | param_set_max_auto_ashift, param_get_ulong, ZMOD_RW, | |
5110 | "Maximum ashift used when optimizing for logical -> physical sector " | |
5111 | "size on new top-level vdevs"); | |
4ea3f864 | 5112 | /* END CSTYLED */ |