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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. |
c3520e7f | 24 | * Copyright (c) 2011, 2015 by Delphix. All rights reserved. |
153b2285 | 25 | * Copyright 2017 Nexenta Systems, Inc. |
e550644f BB |
26 | * Copyright (c) 2014 Integros [integros.com] |
27 | * Copyright 2016 Toomas Soome <tsoome@me.com> | |
12fa0466 | 28 | * Copyright 2017 Joyent, Inc. |
34dc7c2f BB |
29 | */ |
30 | ||
34dc7c2f BB |
31 | #include <sys/zfs_context.h> |
32 | #include <sys/fm/fs/zfs.h> | |
33 | #include <sys/spa.h> | |
34 | #include <sys/spa_impl.h> | |
35 | #include <sys/dmu.h> | |
36 | #include <sys/dmu_tx.h> | |
37 | #include <sys/vdev_impl.h> | |
38 | #include <sys/uberblock_impl.h> | |
39 | #include <sys/metaslab.h> | |
40 | #include <sys/metaslab_impl.h> | |
41 | #include <sys/space_map.h> | |
93cf2076 | 42 | #include <sys/space_reftree.h> |
34dc7c2f BB |
43 | #include <sys/zio.h> |
44 | #include <sys/zap.h> | |
45 | #include <sys/fs/zfs.h> | |
b128c09f | 46 | #include <sys/arc.h> |
9babb374 | 47 | #include <sys/zil.h> |
428870ff | 48 | #include <sys/dsl_scan.h> |
a6255b7f | 49 | #include <sys/abd.h> |
6c285672 | 50 | #include <sys/zvol.h> |
6078881a | 51 | #include <sys/zfs_ratelimit.h> |
34dc7c2f | 52 | |
b8bcca18 MA |
53 | /* |
54 | * When a vdev is added, it will be divided into approximately (but no | |
55 | * more than) this number of metaslabs. | |
56 | */ | |
57 | int metaslabs_per_vdev = 200; | |
58 | ||
34dc7c2f BB |
59 | /* |
60 | * Virtual device management. | |
61 | */ | |
62 | ||
63 | static vdev_ops_t *vdev_ops_table[] = { | |
64 | &vdev_root_ops, | |
65 | &vdev_raidz_ops, | |
66 | &vdev_mirror_ops, | |
67 | &vdev_replacing_ops, | |
68 | &vdev_spare_ops, | |
69 | &vdev_disk_ops, | |
70 | &vdev_file_ops, | |
71 | &vdev_missing_ops, | |
428870ff | 72 | &vdev_hole_ops, |
34dc7c2f BB |
73 | NULL |
74 | }; | |
75 | ||
34dc7c2f BB |
76 | /* |
77 | * Given a vdev type, return the appropriate ops vector. | |
78 | */ | |
79 | static vdev_ops_t * | |
80 | vdev_getops(const char *type) | |
81 | { | |
82 | vdev_ops_t *ops, **opspp; | |
83 | ||
84 | for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++) | |
85 | if (strcmp(ops->vdev_op_type, type) == 0) | |
86 | break; | |
87 | ||
88 | return (ops); | |
89 | } | |
90 | ||
91 | /* | |
92 | * Default asize function: return the MAX of psize with the asize of | |
93 | * all children. This is what's used by anything other than RAID-Z. | |
94 | */ | |
95 | uint64_t | |
96 | vdev_default_asize(vdev_t *vd, uint64_t psize) | |
97 | { | |
98 | uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift); | |
99 | uint64_t csize; | |
34dc7c2f | 100 | |
1c27024e | 101 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
102 | csize = vdev_psize_to_asize(vd->vdev_child[c], psize); |
103 | asize = MAX(asize, csize); | |
104 | } | |
105 | ||
106 | return (asize); | |
107 | } | |
108 | ||
109 | /* | |
9babb374 BB |
110 | * Get the minimum allocatable size. We define the allocatable size as |
111 | * the vdev's asize rounded to the nearest metaslab. This allows us to | |
112 | * replace or attach devices which don't have the same physical size but | |
113 | * can still satisfy the same number of allocations. | |
34dc7c2f BB |
114 | */ |
115 | uint64_t | |
9babb374 | 116 | vdev_get_min_asize(vdev_t *vd) |
34dc7c2f | 117 | { |
9babb374 | 118 | vdev_t *pvd = vd->vdev_parent; |
34dc7c2f | 119 | |
9babb374 | 120 | /* |
1bd201e7 | 121 | * If our parent is NULL (inactive spare or cache) or is the root, |
9babb374 BB |
122 | * just return our own asize. |
123 | */ | |
124 | if (pvd == NULL) | |
125 | return (vd->vdev_asize); | |
34dc7c2f BB |
126 | |
127 | /* | |
9babb374 BB |
128 | * The top-level vdev just returns the allocatable size rounded |
129 | * to the nearest metaslab. | |
34dc7c2f | 130 | */ |
9babb374 BB |
131 | if (vd == vd->vdev_top) |
132 | return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift)); | |
34dc7c2f | 133 | |
9babb374 BB |
134 | /* |
135 | * The allocatable space for a raidz vdev is N * sizeof(smallest child), | |
136 | * so each child must provide at least 1/Nth of its asize. | |
137 | */ | |
138 | if (pvd->vdev_ops == &vdev_raidz_ops) | |
2e215fec SH |
139 | return ((pvd->vdev_min_asize + pvd->vdev_children - 1) / |
140 | pvd->vdev_children); | |
34dc7c2f | 141 | |
9babb374 BB |
142 | return (pvd->vdev_min_asize); |
143 | } | |
144 | ||
145 | void | |
146 | vdev_set_min_asize(vdev_t *vd) | |
147 | { | |
148 | vd->vdev_min_asize = vdev_get_min_asize(vd); | |
34dc7c2f | 149 | |
1c27024e | 150 | for (int c = 0; c < vd->vdev_children; c++) |
9babb374 | 151 | vdev_set_min_asize(vd->vdev_child[c]); |
34dc7c2f BB |
152 | } |
153 | ||
154 | vdev_t * | |
155 | vdev_lookup_top(spa_t *spa, uint64_t vdev) | |
156 | { | |
157 | vdev_t *rvd = spa->spa_root_vdev; | |
158 | ||
b128c09f | 159 | ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); |
34dc7c2f | 160 | |
b128c09f BB |
161 | if (vdev < rvd->vdev_children) { |
162 | ASSERT(rvd->vdev_child[vdev] != NULL); | |
34dc7c2f | 163 | return (rvd->vdev_child[vdev]); |
b128c09f | 164 | } |
34dc7c2f BB |
165 | |
166 | return (NULL); | |
167 | } | |
168 | ||
169 | vdev_t * | |
170 | vdev_lookup_by_guid(vdev_t *vd, uint64_t guid) | |
171 | { | |
34dc7c2f BB |
172 | vdev_t *mvd; |
173 | ||
174 | if (vd->vdev_guid == guid) | |
175 | return (vd); | |
176 | ||
1c27024e | 177 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
178 | if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) != |
179 | NULL) | |
180 | return (mvd); | |
181 | ||
182 | return (NULL); | |
183 | } | |
184 | ||
9c43027b AJ |
185 | static int |
186 | vdev_count_leaves_impl(vdev_t *vd) | |
187 | { | |
188 | int n = 0; | |
9c43027b AJ |
189 | |
190 | if (vd->vdev_ops->vdev_op_leaf) | |
191 | return (1); | |
192 | ||
1c27024e | 193 | for (int c = 0; c < vd->vdev_children; c++) |
9c43027b AJ |
194 | n += vdev_count_leaves_impl(vd->vdev_child[c]); |
195 | ||
196 | return (n); | |
197 | } | |
198 | ||
199 | int | |
200 | vdev_count_leaves(spa_t *spa) | |
201 | { | |
202 | return (vdev_count_leaves_impl(spa->spa_root_vdev)); | |
203 | } | |
204 | ||
34dc7c2f BB |
205 | void |
206 | vdev_add_child(vdev_t *pvd, vdev_t *cvd) | |
207 | { | |
208 | size_t oldsize, newsize; | |
209 | uint64_t id = cvd->vdev_id; | |
210 | vdev_t **newchild; | |
211 | ||
44de2f02 | 212 | ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
213 | ASSERT(cvd->vdev_parent == NULL); |
214 | ||
215 | cvd->vdev_parent = pvd; | |
216 | ||
217 | if (pvd == NULL) | |
218 | return; | |
219 | ||
220 | ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL); | |
221 | ||
222 | oldsize = pvd->vdev_children * sizeof (vdev_t *); | |
223 | pvd->vdev_children = MAX(pvd->vdev_children, id + 1); | |
224 | newsize = pvd->vdev_children * sizeof (vdev_t *); | |
225 | ||
79c76d5b | 226 | newchild = kmem_alloc(newsize, KM_SLEEP); |
34dc7c2f BB |
227 | if (pvd->vdev_child != NULL) { |
228 | bcopy(pvd->vdev_child, newchild, oldsize); | |
229 | kmem_free(pvd->vdev_child, oldsize); | |
230 | } | |
231 | ||
232 | pvd->vdev_child = newchild; | |
233 | pvd->vdev_child[id] = cvd; | |
234 | ||
235 | cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd); | |
236 | ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL); | |
237 | ||
238 | /* | |
239 | * Walk up all ancestors to update guid sum. | |
240 | */ | |
241 | for (; pvd != NULL; pvd = pvd->vdev_parent) | |
242 | pvd->vdev_guid_sum += cvd->vdev_guid_sum; | |
34dc7c2f BB |
243 | } |
244 | ||
245 | void | |
246 | vdev_remove_child(vdev_t *pvd, vdev_t *cvd) | |
247 | { | |
248 | int c; | |
249 | uint_t id = cvd->vdev_id; | |
250 | ||
251 | ASSERT(cvd->vdev_parent == pvd); | |
252 | ||
253 | if (pvd == NULL) | |
254 | return; | |
255 | ||
256 | ASSERT(id < pvd->vdev_children); | |
257 | ASSERT(pvd->vdev_child[id] == cvd); | |
258 | ||
259 | pvd->vdev_child[id] = NULL; | |
260 | cvd->vdev_parent = NULL; | |
261 | ||
262 | for (c = 0; c < pvd->vdev_children; c++) | |
263 | if (pvd->vdev_child[c]) | |
264 | break; | |
265 | ||
266 | if (c == pvd->vdev_children) { | |
267 | kmem_free(pvd->vdev_child, c * sizeof (vdev_t *)); | |
268 | pvd->vdev_child = NULL; | |
269 | pvd->vdev_children = 0; | |
270 | } | |
271 | ||
272 | /* | |
273 | * Walk up all ancestors to update guid sum. | |
274 | */ | |
275 | for (; pvd != NULL; pvd = pvd->vdev_parent) | |
276 | pvd->vdev_guid_sum -= cvd->vdev_guid_sum; | |
34dc7c2f BB |
277 | } |
278 | ||
279 | /* | |
280 | * Remove any holes in the child array. | |
281 | */ | |
282 | void | |
283 | vdev_compact_children(vdev_t *pvd) | |
284 | { | |
285 | vdev_t **newchild, *cvd; | |
286 | int oldc = pvd->vdev_children; | |
9babb374 | 287 | int newc; |
34dc7c2f | 288 | |
b128c09f | 289 | ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f | 290 | |
1c27024e | 291 | for (int c = newc = 0; c < oldc; c++) |
34dc7c2f BB |
292 | if (pvd->vdev_child[c]) |
293 | newc++; | |
294 | ||
79c76d5b | 295 | newchild = kmem_zalloc(newc * sizeof (vdev_t *), KM_SLEEP); |
34dc7c2f | 296 | |
1c27024e | 297 | for (int c = newc = 0; c < oldc; c++) { |
34dc7c2f BB |
298 | if ((cvd = pvd->vdev_child[c]) != NULL) { |
299 | newchild[newc] = cvd; | |
300 | cvd->vdev_id = newc++; | |
301 | } | |
302 | } | |
303 | ||
304 | kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *)); | |
305 | pvd->vdev_child = newchild; | |
306 | pvd->vdev_children = newc; | |
307 | } | |
308 | ||
309 | /* | |
310 | * Allocate and minimally initialize a vdev_t. | |
311 | */ | |
428870ff | 312 | vdev_t * |
34dc7c2f BB |
313 | vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops) |
314 | { | |
315 | vdev_t *vd; | |
316 | ||
79c76d5b | 317 | vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP); |
34dc7c2f BB |
318 | |
319 | if (spa->spa_root_vdev == NULL) { | |
320 | ASSERT(ops == &vdev_root_ops); | |
321 | spa->spa_root_vdev = vd; | |
3541dc6d | 322 | spa->spa_load_guid = spa_generate_guid(NULL); |
34dc7c2f BB |
323 | } |
324 | ||
428870ff | 325 | if (guid == 0 && ops != &vdev_hole_ops) { |
34dc7c2f BB |
326 | if (spa->spa_root_vdev == vd) { |
327 | /* | |
328 | * The root vdev's guid will also be the pool guid, | |
329 | * which must be unique among all pools. | |
330 | */ | |
428870ff | 331 | guid = spa_generate_guid(NULL); |
34dc7c2f BB |
332 | } else { |
333 | /* | |
334 | * Any other vdev's guid must be unique within the pool. | |
335 | */ | |
428870ff | 336 | guid = spa_generate_guid(spa); |
34dc7c2f BB |
337 | } |
338 | ASSERT(!spa_guid_exists(spa_guid(spa), guid)); | |
339 | } | |
340 | ||
341 | vd->vdev_spa = spa; | |
342 | vd->vdev_id = id; | |
343 | vd->vdev_guid = guid; | |
344 | vd->vdev_guid_sum = guid; | |
345 | vd->vdev_ops = ops; | |
346 | vd->vdev_state = VDEV_STATE_CLOSED; | |
428870ff | 347 | vd->vdev_ishole = (ops == &vdev_hole_ops); |
34dc7c2f | 348 | |
6078881a TH |
349 | /* |
350 | * Initialize rate limit structs for events. We rate limit ZIO delay | |
351 | * and checksum events so that we don't overwhelm ZED with thousands | |
352 | * of events when a disk is acting up. | |
353 | */ | |
354 | zfs_ratelimit_init(&vd->vdev_delay_rl, DELAYS_PER_SECOND, 1); | |
355 | zfs_ratelimit_init(&vd->vdev_checksum_rl, CHECKSUMS_PER_SECOND, 1); | |
356 | ||
98f72a53 BB |
357 | list_link_init(&vd->vdev_config_dirty_node); |
358 | list_link_init(&vd->vdev_state_dirty_node); | |
448d7aaa | 359 | mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_NOLOCKDEP, NULL); |
34dc7c2f | 360 | mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL); |
b128c09f | 361 | mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL); |
3dfb57a3 | 362 | mutex_init(&vd->vdev_queue_lock, NULL, MUTEX_DEFAULT, NULL); |
d4a72f23 | 363 | mutex_init(&vd->vdev_scan_io_queue_lock, NULL, MUTEX_DEFAULT, NULL); |
6078881a | 364 | |
1c27024e | 365 | for (int t = 0; t < DTL_TYPES; t++) { |
93cf2076 | 366 | vd->vdev_dtl[t] = range_tree_create(NULL, NULL, |
fb5f0bc8 BB |
367 | &vd->vdev_dtl_lock); |
368 | } | |
4747a7d3 | 369 | txg_list_create(&vd->vdev_ms_list, spa, |
34dc7c2f | 370 | offsetof(struct metaslab, ms_txg_node)); |
4747a7d3 | 371 | txg_list_create(&vd->vdev_dtl_list, spa, |
34dc7c2f BB |
372 | offsetof(struct vdev, vdev_dtl_node)); |
373 | vd->vdev_stat.vs_timestamp = gethrtime(); | |
374 | vdev_queue_init(vd); | |
375 | vdev_cache_init(vd); | |
376 | ||
377 | return (vd); | |
378 | } | |
379 | ||
380 | /* | |
381 | * Allocate a new vdev. The 'alloctype' is used to control whether we are | |
382 | * creating a new vdev or loading an existing one - the behavior is slightly | |
383 | * different for each case. | |
384 | */ | |
385 | int | |
386 | vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id, | |
387 | int alloctype) | |
388 | { | |
389 | vdev_ops_t *ops; | |
390 | char *type; | |
391 | uint64_t guid = 0, islog, nparity; | |
392 | vdev_t *vd; | |
4a283c7f TH |
393 | char *tmp = NULL; |
394 | int rc; | |
34dc7c2f | 395 | |
b128c09f | 396 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
397 | |
398 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) | |
2e528b49 | 399 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
400 | |
401 | if ((ops = vdev_getops(type)) == NULL) | |
2e528b49 | 402 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
403 | |
404 | /* | |
405 | * If this is a load, get the vdev guid from the nvlist. | |
406 | * Otherwise, vdev_alloc_common() will generate one for us. | |
407 | */ | |
408 | if (alloctype == VDEV_ALLOC_LOAD) { | |
409 | uint64_t label_id; | |
410 | ||
411 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) || | |
412 | label_id != id) | |
2e528b49 | 413 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
414 | |
415 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 416 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
417 | } else if (alloctype == VDEV_ALLOC_SPARE) { |
418 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 419 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
420 | } else if (alloctype == VDEV_ALLOC_L2CACHE) { |
421 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 422 | return (SET_ERROR(EINVAL)); |
9babb374 BB |
423 | } else if (alloctype == VDEV_ALLOC_ROOTPOOL) { |
424 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) | |
2e528b49 | 425 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
426 | } |
427 | ||
428 | /* | |
429 | * The first allocated vdev must be of type 'root'. | |
430 | */ | |
431 | if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL) | |
2e528b49 | 432 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
433 | |
434 | /* | |
435 | * Determine whether we're a log vdev. | |
436 | */ | |
437 | islog = 0; | |
438 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog); | |
439 | if (islog && spa_version(spa) < SPA_VERSION_SLOGS) | |
2e528b49 | 440 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f | 441 | |
428870ff | 442 | if (ops == &vdev_hole_ops && spa_version(spa) < SPA_VERSION_HOLES) |
2e528b49 | 443 | return (SET_ERROR(ENOTSUP)); |
428870ff | 444 | |
34dc7c2f BB |
445 | /* |
446 | * Set the nparity property for RAID-Z vdevs. | |
447 | */ | |
448 | nparity = -1ULL; | |
449 | if (ops == &vdev_raidz_ops) { | |
450 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, | |
451 | &nparity) == 0) { | |
428870ff | 452 | if (nparity == 0 || nparity > VDEV_RAIDZ_MAXPARITY) |
2e528b49 | 453 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 454 | /* |
45d1cae3 BB |
455 | * Previous versions could only support 1 or 2 parity |
456 | * device. | |
34dc7c2f | 457 | */ |
45d1cae3 BB |
458 | if (nparity > 1 && |
459 | spa_version(spa) < SPA_VERSION_RAIDZ2) | |
2e528b49 | 460 | return (SET_ERROR(ENOTSUP)); |
45d1cae3 BB |
461 | if (nparity > 2 && |
462 | spa_version(spa) < SPA_VERSION_RAIDZ3) | |
2e528b49 | 463 | return (SET_ERROR(ENOTSUP)); |
34dc7c2f BB |
464 | } else { |
465 | /* | |
466 | * We require the parity to be specified for SPAs that | |
467 | * support multiple parity levels. | |
468 | */ | |
45d1cae3 | 469 | if (spa_version(spa) >= SPA_VERSION_RAIDZ2) |
2e528b49 | 470 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
471 | /* |
472 | * Otherwise, we default to 1 parity device for RAID-Z. | |
473 | */ | |
474 | nparity = 1; | |
475 | } | |
476 | } else { | |
477 | nparity = 0; | |
478 | } | |
479 | ASSERT(nparity != -1ULL); | |
480 | ||
481 | vd = vdev_alloc_common(spa, id, guid, ops); | |
482 | ||
483 | vd->vdev_islog = islog; | |
484 | vd->vdev_nparity = nparity; | |
485 | ||
486 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &vd->vdev_path) == 0) | |
487 | vd->vdev_path = spa_strdup(vd->vdev_path); | |
4a283c7f TH |
488 | |
489 | /* | |
490 | * ZPOOL_CONFIG_AUX_STATE = "external" means we previously forced a | |
491 | * fault on a vdev and want it to persist across imports (like with | |
492 | * zpool offline -f). | |
493 | */ | |
494 | rc = nvlist_lookup_string(nv, ZPOOL_CONFIG_AUX_STATE, &tmp); | |
495 | if (rc == 0 && tmp != NULL && strcmp(tmp, "external") == 0) { | |
496 | vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL; | |
497 | vd->vdev_faulted = 1; | |
498 | vd->vdev_label_aux = VDEV_AUX_EXTERNAL; | |
499 | } | |
500 | ||
34dc7c2f BB |
501 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &vd->vdev_devid) == 0) |
502 | vd->vdev_devid = spa_strdup(vd->vdev_devid); | |
503 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH, | |
504 | &vd->vdev_physpath) == 0) | |
505 | vd->vdev_physpath = spa_strdup(vd->vdev_physpath); | |
1bbd8770 TH |
506 | |
507 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH, | |
508 | &vd->vdev_enc_sysfs_path) == 0) | |
509 | vd->vdev_enc_sysfs_path = spa_strdup(vd->vdev_enc_sysfs_path); | |
510 | ||
9babb374 BB |
511 | if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &vd->vdev_fru) == 0) |
512 | vd->vdev_fru = spa_strdup(vd->vdev_fru); | |
34dc7c2f BB |
513 | |
514 | /* | |
515 | * Set the whole_disk property. If it's not specified, leave the value | |
516 | * as -1. | |
517 | */ | |
518 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, | |
519 | &vd->vdev_wholedisk) != 0) | |
520 | vd->vdev_wholedisk = -1ULL; | |
521 | ||
522 | /* | |
523 | * Look for the 'not present' flag. This will only be set if the device | |
524 | * was not present at the time of import. | |
525 | */ | |
9babb374 BB |
526 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, |
527 | &vd->vdev_not_present); | |
34dc7c2f BB |
528 | |
529 | /* | |
530 | * Get the alignment requirement. | |
531 | */ | |
532 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &vd->vdev_ashift); | |
533 | ||
428870ff BB |
534 | /* |
535 | * Retrieve the vdev creation time. | |
536 | */ | |
537 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_CREATE_TXG, | |
538 | &vd->vdev_crtxg); | |
539 | ||
34dc7c2f BB |
540 | /* |
541 | * If we're a top-level vdev, try to load the allocation parameters. | |
542 | */ | |
428870ff BB |
543 | if (parent && !parent->vdev_parent && |
544 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { | |
34dc7c2f BB |
545 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY, |
546 | &vd->vdev_ms_array); | |
547 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT, | |
548 | &vd->vdev_ms_shift); | |
549 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE, | |
550 | &vd->vdev_asize); | |
428870ff BB |
551 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVING, |
552 | &vd->vdev_removing); | |
e0ab3ab5 JS |
553 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP, |
554 | &vd->vdev_top_zap); | |
555 | } else { | |
556 | ASSERT0(vd->vdev_top_zap); | |
428870ff BB |
557 | } |
558 | ||
5ffb9d1d | 559 | if (parent && !parent->vdev_parent && alloctype != VDEV_ALLOC_ATTACH) { |
428870ff BB |
560 | ASSERT(alloctype == VDEV_ALLOC_LOAD || |
561 | alloctype == VDEV_ALLOC_ADD || | |
562 | alloctype == VDEV_ALLOC_SPLIT || | |
563 | alloctype == VDEV_ALLOC_ROOTPOOL); | |
564 | vd->vdev_mg = metaslab_group_create(islog ? | |
565 | spa_log_class(spa) : spa_normal_class(spa), vd); | |
34dc7c2f BB |
566 | } |
567 | ||
e0ab3ab5 JS |
568 | if (vd->vdev_ops->vdev_op_leaf && |
569 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { | |
570 | (void) nvlist_lookup_uint64(nv, | |
571 | ZPOOL_CONFIG_VDEV_LEAF_ZAP, &vd->vdev_leaf_zap); | |
572 | } else { | |
573 | ASSERT0(vd->vdev_leaf_zap); | |
574 | } | |
575 | ||
34dc7c2f BB |
576 | /* |
577 | * If we're a leaf vdev, try to load the DTL object and other state. | |
578 | */ | |
e0ab3ab5 | 579 | |
b128c09f | 580 | if (vd->vdev_ops->vdev_op_leaf && |
9babb374 BB |
581 | (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE || |
582 | alloctype == VDEV_ALLOC_ROOTPOOL)) { | |
b128c09f BB |
583 | if (alloctype == VDEV_ALLOC_LOAD) { |
584 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL, | |
93cf2076 | 585 | &vd->vdev_dtl_object); |
b128c09f BB |
586 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE, |
587 | &vd->vdev_unspare); | |
588 | } | |
9babb374 BB |
589 | |
590 | if (alloctype == VDEV_ALLOC_ROOTPOOL) { | |
591 | uint64_t spare = 0; | |
592 | ||
593 | if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, | |
594 | &spare) == 0 && spare) | |
595 | spa_spare_add(vd); | |
596 | } | |
597 | ||
34dc7c2f BB |
598 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, |
599 | &vd->vdev_offline); | |
b128c09f | 600 | |
5d1f7fb6 GW |
601 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG, |
602 | &vd->vdev_resilver_txg); | |
572e2857 | 603 | |
34dc7c2f | 604 | /* |
4a283c7f TH |
605 | * In general, when importing a pool we want to ignore the |
606 | * persistent fault state, as the diagnosis made on another | |
607 | * system may not be valid in the current context. The only | |
608 | * exception is if we forced a vdev to a persistently faulted | |
609 | * state with 'zpool offline -f'. The persistent fault will | |
610 | * remain across imports until cleared. | |
611 | * | |
612 | * Local vdevs will remain in the faulted state. | |
34dc7c2f | 613 | */ |
4a283c7f TH |
614 | if (spa_load_state(spa) == SPA_LOAD_OPEN || |
615 | spa_load_state(spa) == SPA_LOAD_IMPORT) { | |
34dc7c2f BB |
616 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, |
617 | &vd->vdev_faulted); | |
618 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED, | |
619 | &vd->vdev_degraded); | |
620 | (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, | |
621 | &vd->vdev_removed); | |
428870ff BB |
622 | |
623 | if (vd->vdev_faulted || vd->vdev_degraded) { | |
624 | char *aux; | |
625 | ||
626 | vd->vdev_label_aux = | |
627 | VDEV_AUX_ERR_EXCEEDED; | |
628 | if (nvlist_lookup_string(nv, | |
629 | ZPOOL_CONFIG_AUX_STATE, &aux) == 0 && | |
630 | strcmp(aux, "external") == 0) | |
631 | vd->vdev_label_aux = VDEV_AUX_EXTERNAL; | |
632 | } | |
34dc7c2f BB |
633 | } |
634 | } | |
635 | ||
636 | /* | |
637 | * Add ourselves to the parent's list of children. | |
638 | */ | |
639 | vdev_add_child(parent, vd); | |
640 | ||
641 | *vdp = vd; | |
642 | ||
643 | return (0); | |
644 | } | |
645 | ||
646 | void | |
647 | vdev_free(vdev_t *vd) | |
648 | { | |
34dc7c2f BB |
649 | spa_t *spa = vd->vdev_spa; |
650 | ||
d4a72f23 TC |
651 | /* |
652 | * Scan queues are normally destroyed at the end of a scan. If the | |
653 | * queue exists here, that implies the vdev is being removed while | |
654 | * the scan is still running. | |
655 | */ | |
656 | if (vd->vdev_scan_io_queue != NULL) { | |
657 | mutex_enter(&vd->vdev_scan_io_queue_lock); | |
658 | dsl_scan_io_queue_destroy(vd->vdev_scan_io_queue); | |
659 | vd->vdev_scan_io_queue = NULL; | |
660 | mutex_exit(&vd->vdev_scan_io_queue_lock); | |
661 | } | |
662 | ||
34dc7c2f BB |
663 | /* |
664 | * vdev_free() implies closing the vdev first. This is simpler than | |
665 | * trying to ensure complicated semantics for all callers. | |
666 | */ | |
667 | vdev_close(vd); | |
668 | ||
b128c09f | 669 | ASSERT(!list_link_active(&vd->vdev_config_dirty_node)); |
428870ff | 670 | ASSERT(!list_link_active(&vd->vdev_state_dirty_node)); |
34dc7c2f BB |
671 | |
672 | /* | |
673 | * Free all children. | |
674 | */ | |
1c27024e | 675 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
676 | vdev_free(vd->vdev_child[c]); |
677 | ||
678 | ASSERT(vd->vdev_child == NULL); | |
679 | ASSERT(vd->vdev_guid_sum == vd->vdev_guid); | |
680 | ||
681 | /* | |
682 | * Discard allocation state. | |
683 | */ | |
428870ff | 684 | if (vd->vdev_mg != NULL) { |
34dc7c2f | 685 | vdev_metaslab_fini(vd); |
428870ff BB |
686 | metaslab_group_destroy(vd->vdev_mg); |
687 | } | |
34dc7c2f | 688 | |
c99c9001 MS |
689 | ASSERT0(vd->vdev_stat.vs_space); |
690 | ASSERT0(vd->vdev_stat.vs_dspace); | |
691 | ASSERT0(vd->vdev_stat.vs_alloc); | |
34dc7c2f BB |
692 | |
693 | /* | |
694 | * Remove this vdev from its parent's child list. | |
695 | */ | |
696 | vdev_remove_child(vd->vdev_parent, vd); | |
697 | ||
698 | ASSERT(vd->vdev_parent == NULL); | |
699 | ||
700 | /* | |
701 | * Clean up vdev structure. | |
702 | */ | |
703 | vdev_queue_fini(vd); | |
704 | vdev_cache_fini(vd); | |
705 | ||
706 | if (vd->vdev_path) | |
707 | spa_strfree(vd->vdev_path); | |
708 | if (vd->vdev_devid) | |
709 | spa_strfree(vd->vdev_devid); | |
710 | if (vd->vdev_physpath) | |
711 | spa_strfree(vd->vdev_physpath); | |
1bbd8770 TH |
712 | |
713 | if (vd->vdev_enc_sysfs_path) | |
714 | spa_strfree(vd->vdev_enc_sysfs_path); | |
715 | ||
9babb374 BB |
716 | if (vd->vdev_fru) |
717 | spa_strfree(vd->vdev_fru); | |
34dc7c2f BB |
718 | |
719 | if (vd->vdev_isspare) | |
720 | spa_spare_remove(vd); | |
721 | if (vd->vdev_isl2cache) | |
722 | spa_l2cache_remove(vd); | |
723 | ||
724 | txg_list_destroy(&vd->vdev_ms_list); | |
725 | txg_list_destroy(&vd->vdev_dtl_list); | |
fb5f0bc8 | 726 | |
34dc7c2f | 727 | mutex_enter(&vd->vdev_dtl_lock); |
93cf2076 | 728 | space_map_close(vd->vdev_dtl_sm); |
1c27024e | 729 | for (int t = 0; t < DTL_TYPES; t++) { |
93cf2076 GW |
730 | range_tree_vacate(vd->vdev_dtl[t], NULL, NULL); |
731 | range_tree_destroy(vd->vdev_dtl[t]); | |
fb5f0bc8 | 732 | } |
34dc7c2f | 733 | mutex_exit(&vd->vdev_dtl_lock); |
fb5f0bc8 | 734 | |
3dfb57a3 | 735 | mutex_destroy(&vd->vdev_queue_lock); |
34dc7c2f BB |
736 | mutex_destroy(&vd->vdev_dtl_lock); |
737 | mutex_destroy(&vd->vdev_stat_lock); | |
b128c09f | 738 | mutex_destroy(&vd->vdev_probe_lock); |
d4a72f23 | 739 | mutex_destroy(&vd->vdev_scan_io_queue_lock); |
34dc7c2f | 740 | |
c17486b2 GN |
741 | zfs_ratelimit_fini(&vd->vdev_delay_rl); |
742 | zfs_ratelimit_fini(&vd->vdev_checksum_rl); | |
743 | ||
34dc7c2f BB |
744 | if (vd == spa->spa_root_vdev) |
745 | spa->spa_root_vdev = NULL; | |
746 | ||
747 | kmem_free(vd, sizeof (vdev_t)); | |
748 | } | |
749 | ||
750 | /* | |
751 | * Transfer top-level vdev state from svd to tvd. | |
752 | */ | |
753 | static void | |
754 | vdev_top_transfer(vdev_t *svd, vdev_t *tvd) | |
755 | { | |
756 | spa_t *spa = svd->vdev_spa; | |
757 | metaslab_t *msp; | |
758 | vdev_t *vd; | |
759 | int t; | |
760 | ||
761 | ASSERT(tvd == tvd->vdev_top); | |
762 | ||
77943bc1 | 763 | tvd->vdev_pending_fastwrite = svd->vdev_pending_fastwrite; |
34dc7c2f BB |
764 | tvd->vdev_ms_array = svd->vdev_ms_array; |
765 | tvd->vdev_ms_shift = svd->vdev_ms_shift; | |
766 | tvd->vdev_ms_count = svd->vdev_ms_count; | |
e0ab3ab5 | 767 | tvd->vdev_top_zap = svd->vdev_top_zap; |
34dc7c2f BB |
768 | |
769 | svd->vdev_ms_array = 0; | |
770 | svd->vdev_ms_shift = 0; | |
771 | svd->vdev_ms_count = 0; | |
e0ab3ab5 | 772 | svd->vdev_top_zap = 0; |
34dc7c2f | 773 | |
5ffb9d1d GW |
774 | if (tvd->vdev_mg) |
775 | ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg); | |
34dc7c2f BB |
776 | tvd->vdev_mg = svd->vdev_mg; |
777 | tvd->vdev_ms = svd->vdev_ms; | |
778 | ||
779 | svd->vdev_mg = NULL; | |
780 | svd->vdev_ms = NULL; | |
781 | ||
782 | if (tvd->vdev_mg != NULL) | |
783 | tvd->vdev_mg->mg_vd = tvd; | |
784 | ||
785 | tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc; | |
786 | tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space; | |
787 | tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace; | |
788 | ||
789 | svd->vdev_stat.vs_alloc = 0; | |
790 | svd->vdev_stat.vs_space = 0; | |
791 | svd->vdev_stat.vs_dspace = 0; | |
792 | ||
793 | for (t = 0; t < TXG_SIZE; t++) { | |
794 | while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL) | |
795 | (void) txg_list_add(&tvd->vdev_ms_list, msp, t); | |
796 | while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL) | |
797 | (void) txg_list_add(&tvd->vdev_dtl_list, vd, t); | |
798 | if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t)) | |
799 | (void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t); | |
800 | } | |
801 | ||
b128c09f | 802 | if (list_link_active(&svd->vdev_config_dirty_node)) { |
34dc7c2f BB |
803 | vdev_config_clean(svd); |
804 | vdev_config_dirty(tvd); | |
805 | } | |
806 | ||
b128c09f BB |
807 | if (list_link_active(&svd->vdev_state_dirty_node)) { |
808 | vdev_state_clean(svd); | |
809 | vdev_state_dirty(tvd); | |
810 | } | |
811 | ||
34dc7c2f BB |
812 | tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio; |
813 | svd->vdev_deflate_ratio = 0; | |
814 | ||
815 | tvd->vdev_islog = svd->vdev_islog; | |
816 | svd->vdev_islog = 0; | |
d4a72f23 TC |
817 | |
818 | dsl_scan_io_queue_vdev_xfer(svd, tvd); | |
34dc7c2f BB |
819 | } |
820 | ||
821 | static void | |
822 | vdev_top_update(vdev_t *tvd, vdev_t *vd) | |
823 | { | |
34dc7c2f BB |
824 | if (vd == NULL) |
825 | return; | |
826 | ||
827 | vd->vdev_top = tvd; | |
828 | ||
1c27024e | 829 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
830 | vdev_top_update(tvd, vd->vdev_child[c]); |
831 | } | |
832 | ||
833 | /* | |
834 | * Add a mirror/replacing vdev above an existing vdev. | |
835 | */ | |
836 | vdev_t * | |
837 | vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops) | |
838 | { | |
839 | spa_t *spa = cvd->vdev_spa; | |
840 | vdev_t *pvd = cvd->vdev_parent; | |
841 | vdev_t *mvd; | |
842 | ||
b128c09f | 843 | ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
844 | |
845 | mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops); | |
846 | ||
847 | mvd->vdev_asize = cvd->vdev_asize; | |
9babb374 | 848 | mvd->vdev_min_asize = cvd->vdev_min_asize; |
1bd201e7 | 849 | mvd->vdev_max_asize = cvd->vdev_max_asize; |
34dc7c2f BB |
850 | mvd->vdev_ashift = cvd->vdev_ashift; |
851 | mvd->vdev_state = cvd->vdev_state; | |
428870ff | 852 | mvd->vdev_crtxg = cvd->vdev_crtxg; |
34dc7c2f BB |
853 | |
854 | vdev_remove_child(pvd, cvd); | |
855 | vdev_add_child(pvd, mvd); | |
856 | cvd->vdev_id = mvd->vdev_children; | |
857 | vdev_add_child(mvd, cvd); | |
858 | vdev_top_update(cvd->vdev_top, cvd->vdev_top); | |
859 | ||
860 | if (mvd == mvd->vdev_top) | |
861 | vdev_top_transfer(cvd, mvd); | |
862 | ||
863 | return (mvd); | |
864 | } | |
865 | ||
866 | /* | |
867 | * Remove a 1-way mirror/replacing vdev from the tree. | |
868 | */ | |
869 | void | |
870 | vdev_remove_parent(vdev_t *cvd) | |
871 | { | |
872 | vdev_t *mvd = cvd->vdev_parent; | |
873 | vdev_t *pvd = mvd->vdev_parent; | |
874 | ||
b128c09f | 875 | ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); |
34dc7c2f BB |
876 | |
877 | ASSERT(mvd->vdev_children == 1); | |
878 | ASSERT(mvd->vdev_ops == &vdev_mirror_ops || | |
879 | mvd->vdev_ops == &vdev_replacing_ops || | |
880 | mvd->vdev_ops == &vdev_spare_ops); | |
881 | cvd->vdev_ashift = mvd->vdev_ashift; | |
882 | ||
883 | vdev_remove_child(mvd, cvd); | |
884 | vdev_remove_child(pvd, mvd); | |
fb5f0bc8 | 885 | |
34dc7c2f | 886 | /* |
b128c09f BB |
887 | * If cvd will replace mvd as a top-level vdev, preserve mvd's guid. |
888 | * Otherwise, we could have detached an offline device, and when we | |
889 | * go to import the pool we'll think we have two top-level vdevs, | |
890 | * instead of a different version of the same top-level vdev. | |
34dc7c2f | 891 | */ |
fb5f0bc8 BB |
892 | if (mvd->vdev_top == mvd) { |
893 | uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid; | |
428870ff | 894 | cvd->vdev_orig_guid = cvd->vdev_guid; |
fb5f0bc8 BB |
895 | cvd->vdev_guid += guid_delta; |
896 | cvd->vdev_guid_sum += guid_delta; | |
61e99a73 AB |
897 | |
898 | /* | |
899 | * If pool not set for autoexpand, we need to also preserve | |
900 | * mvd's asize to prevent automatic expansion of cvd. | |
901 | * Otherwise if we are adjusting the mirror by attaching and | |
902 | * detaching children of non-uniform sizes, the mirror could | |
903 | * autoexpand, unexpectedly requiring larger devices to | |
904 | * re-establish the mirror. | |
905 | */ | |
906 | if (!cvd->vdev_spa->spa_autoexpand) | |
907 | cvd->vdev_asize = mvd->vdev_asize; | |
fb5f0bc8 | 908 | } |
b128c09f BB |
909 | cvd->vdev_id = mvd->vdev_id; |
910 | vdev_add_child(pvd, cvd); | |
34dc7c2f BB |
911 | vdev_top_update(cvd->vdev_top, cvd->vdev_top); |
912 | ||
913 | if (cvd == cvd->vdev_top) | |
914 | vdev_top_transfer(mvd, cvd); | |
915 | ||
916 | ASSERT(mvd->vdev_children == 0); | |
917 | vdev_free(mvd); | |
918 | } | |
919 | ||
920 | int | |
921 | vdev_metaslab_init(vdev_t *vd, uint64_t txg) | |
922 | { | |
923 | spa_t *spa = vd->vdev_spa; | |
924 | objset_t *mos = spa->spa_meta_objset; | |
34dc7c2f BB |
925 | uint64_t m; |
926 | uint64_t oldc = vd->vdev_ms_count; | |
927 | uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift; | |
928 | metaslab_t **mspp; | |
929 | int error; | |
930 | ||
428870ff BB |
931 | ASSERT(txg == 0 || spa_config_held(spa, SCL_ALLOC, RW_WRITER)); |
932 | ||
933 | /* | |
934 | * This vdev is not being allocated from yet or is a hole. | |
935 | */ | |
936 | if (vd->vdev_ms_shift == 0) | |
34dc7c2f BB |
937 | return (0); |
938 | ||
428870ff BB |
939 | ASSERT(!vd->vdev_ishole); |
940 | ||
9babb374 BB |
941 | /* |
942 | * Compute the raidz-deflation ratio. Note, we hard-code | |
f1512ee6 MA |
943 | * in 128k (1 << 17) because it is the "typical" blocksize. |
944 | * Even though SPA_MAXBLOCKSIZE changed, this algorithm can not change, | |
945 | * otherwise it would inconsistently account for existing bp's. | |
9babb374 BB |
946 | */ |
947 | vd->vdev_deflate_ratio = (1 << 17) / | |
948 | (vdev_psize_to_asize(vd, 1 << 17) >> SPA_MINBLOCKSHIFT); | |
949 | ||
34dc7c2f BB |
950 | ASSERT(oldc <= newc); |
951 | ||
bffb68a2 | 952 | mspp = vmem_zalloc(newc * sizeof (*mspp), KM_SLEEP); |
34dc7c2f BB |
953 | |
954 | if (oldc != 0) { | |
955 | bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp)); | |
bffb68a2 | 956 | vmem_free(vd->vdev_ms, oldc * sizeof (*mspp)); |
34dc7c2f BB |
957 | } |
958 | ||
959 | vd->vdev_ms = mspp; | |
960 | vd->vdev_ms_count = newc; | |
961 | ||
962 | for (m = oldc; m < newc; m++) { | |
93cf2076 GW |
963 | uint64_t object = 0; |
964 | ||
34dc7c2f | 965 | if (txg == 0) { |
34dc7c2f | 966 | error = dmu_read(mos, vd->vdev_ms_array, |
9babb374 BB |
967 | m * sizeof (uint64_t), sizeof (uint64_t), &object, |
968 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
969 | if (error) |
970 | return (error); | |
34dc7c2f | 971 | } |
fb42a493 PS |
972 | |
973 | error = metaslab_init(vd->vdev_mg, m, object, txg, | |
974 | &(vd->vdev_ms[m])); | |
975 | if (error) | |
976 | return (error); | |
34dc7c2f BB |
977 | } |
978 | ||
428870ff BB |
979 | if (txg == 0) |
980 | spa_config_enter(spa, SCL_ALLOC, FTAG, RW_WRITER); | |
981 | ||
982 | /* | |
983 | * If the vdev is being removed we don't activate | |
984 | * the metaslabs since we want to ensure that no new | |
985 | * allocations are performed on this device. | |
986 | */ | |
987 | if (oldc == 0 && !vd->vdev_removing) | |
988 | metaslab_group_activate(vd->vdev_mg); | |
989 | ||
990 | if (txg == 0) | |
991 | spa_config_exit(spa, SCL_ALLOC, FTAG); | |
992 | ||
34dc7c2f BB |
993 | return (0); |
994 | } | |
995 | ||
996 | void | |
997 | vdev_metaslab_fini(vdev_t *vd) | |
998 | { | |
999 | uint64_t m; | |
1000 | uint64_t count = vd->vdev_ms_count; | |
1001 | ||
1002 | if (vd->vdev_ms != NULL) { | |
428870ff | 1003 | metaslab_group_passivate(vd->vdev_mg); |
93cf2076 GW |
1004 | for (m = 0; m < count; m++) { |
1005 | metaslab_t *msp = vd->vdev_ms[m]; | |
1006 | ||
1007 | if (msp != NULL) | |
1008 | metaslab_fini(msp); | |
1009 | } | |
bffb68a2 | 1010 | vmem_free(vd->vdev_ms, count * sizeof (metaslab_t *)); |
34dc7c2f BB |
1011 | vd->vdev_ms = NULL; |
1012 | } | |
920dd524 ED |
1013 | |
1014 | ASSERT3U(vd->vdev_pending_fastwrite, ==, 0); | |
34dc7c2f BB |
1015 | } |
1016 | ||
b128c09f BB |
1017 | typedef struct vdev_probe_stats { |
1018 | boolean_t vps_readable; | |
1019 | boolean_t vps_writeable; | |
1020 | int vps_flags; | |
b128c09f BB |
1021 | } vdev_probe_stats_t; |
1022 | ||
1023 | static void | |
1024 | vdev_probe_done(zio_t *zio) | |
34dc7c2f | 1025 | { |
fb5f0bc8 | 1026 | spa_t *spa = zio->io_spa; |
d164b209 | 1027 | vdev_t *vd = zio->io_vd; |
b128c09f | 1028 | vdev_probe_stats_t *vps = zio->io_private; |
d164b209 BB |
1029 | |
1030 | ASSERT(vd->vdev_probe_zio != NULL); | |
b128c09f BB |
1031 | |
1032 | if (zio->io_type == ZIO_TYPE_READ) { | |
b128c09f BB |
1033 | if (zio->io_error == 0) |
1034 | vps->vps_readable = 1; | |
fb5f0bc8 | 1035 | if (zio->io_error == 0 && spa_writeable(spa)) { |
d164b209 | 1036 | zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd, |
a6255b7f | 1037 | zio->io_offset, zio->io_size, zio->io_abd, |
b128c09f BB |
1038 | ZIO_CHECKSUM_OFF, vdev_probe_done, vps, |
1039 | ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE)); | |
1040 | } else { | |
a6255b7f | 1041 | abd_free(zio->io_abd); |
b128c09f BB |
1042 | } |
1043 | } else if (zio->io_type == ZIO_TYPE_WRITE) { | |
b128c09f BB |
1044 | if (zio->io_error == 0) |
1045 | vps->vps_writeable = 1; | |
a6255b7f | 1046 | abd_free(zio->io_abd); |
b128c09f | 1047 | } else if (zio->io_type == ZIO_TYPE_NULL) { |
d164b209 | 1048 | zio_t *pio; |
3dfb57a3 | 1049 | zio_link_t *zl; |
b128c09f BB |
1050 | |
1051 | vd->vdev_cant_read |= !vps->vps_readable; | |
1052 | vd->vdev_cant_write |= !vps->vps_writeable; | |
1053 | ||
1054 | if (vdev_readable(vd) && | |
fb5f0bc8 | 1055 | (vdev_writeable(vd) || !spa_writeable(spa))) { |
b128c09f BB |
1056 | zio->io_error = 0; |
1057 | } else { | |
1058 | ASSERT(zio->io_error != 0); | |
1059 | zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE, | |
b5256303 | 1060 | spa, vd, NULL, NULL, 0, 0); |
2e528b49 | 1061 | zio->io_error = SET_ERROR(ENXIO); |
b128c09f | 1062 | } |
d164b209 BB |
1063 | |
1064 | mutex_enter(&vd->vdev_probe_lock); | |
1065 | ASSERT(vd->vdev_probe_zio == zio); | |
1066 | vd->vdev_probe_zio = NULL; | |
1067 | mutex_exit(&vd->vdev_probe_lock); | |
1068 | ||
3dfb57a3 DB |
1069 | zl = NULL; |
1070 | while ((pio = zio_walk_parents(zio, &zl)) != NULL) | |
d164b209 | 1071 | if (!vdev_accessible(vd, pio)) |
2e528b49 | 1072 | pio->io_error = SET_ERROR(ENXIO); |
d164b209 | 1073 | |
b128c09f BB |
1074 | kmem_free(vps, sizeof (*vps)); |
1075 | } | |
1076 | } | |
34dc7c2f | 1077 | |
b128c09f | 1078 | /* |
d3cc8b15 WA |
1079 | * Determine whether this device is accessible. |
1080 | * | |
1081 | * Read and write to several known locations: the pad regions of each | |
1082 | * vdev label but the first, which we leave alone in case it contains | |
1083 | * a VTOC. | |
b128c09f BB |
1084 | */ |
1085 | zio_t * | |
d164b209 | 1086 | vdev_probe(vdev_t *vd, zio_t *zio) |
b128c09f BB |
1087 | { |
1088 | spa_t *spa = vd->vdev_spa; | |
d164b209 BB |
1089 | vdev_probe_stats_t *vps = NULL; |
1090 | zio_t *pio; | |
1091 | ||
1092 | ASSERT(vd->vdev_ops->vdev_op_leaf); | |
34dc7c2f | 1093 | |
d164b209 BB |
1094 | /* |
1095 | * Don't probe the probe. | |
1096 | */ | |
1097 | if (zio && (zio->io_flags & ZIO_FLAG_PROBE)) | |
1098 | return (NULL); | |
b128c09f | 1099 | |
d164b209 BB |
1100 | /* |
1101 | * To prevent 'probe storms' when a device fails, we create | |
1102 | * just one probe i/o at a time. All zios that want to probe | |
1103 | * this vdev will become parents of the probe io. | |
1104 | */ | |
1105 | mutex_enter(&vd->vdev_probe_lock); | |
b128c09f | 1106 | |
d164b209 | 1107 | if ((pio = vd->vdev_probe_zio) == NULL) { |
79c76d5b | 1108 | vps = kmem_zalloc(sizeof (*vps), KM_SLEEP); |
d164b209 BB |
1109 | |
1110 | vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE | | |
1111 | ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE | | |
9babb374 | 1112 | ZIO_FLAG_TRYHARD; |
d164b209 BB |
1113 | |
1114 | if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) { | |
1115 | /* | |
1116 | * vdev_cant_read and vdev_cant_write can only | |
1117 | * transition from TRUE to FALSE when we have the | |
1118 | * SCL_ZIO lock as writer; otherwise they can only | |
1119 | * transition from FALSE to TRUE. This ensures that | |
1120 | * any zio looking at these values can assume that | |
1121 | * failures persist for the life of the I/O. That's | |
1122 | * important because when a device has intermittent | |
1123 | * connectivity problems, we want to ensure that | |
1124 | * they're ascribed to the device (ENXIO) and not | |
1125 | * the zio (EIO). | |
1126 | * | |
1127 | * Since we hold SCL_ZIO as writer here, clear both | |
1128 | * values so the probe can reevaluate from first | |
1129 | * principles. | |
1130 | */ | |
1131 | vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER; | |
1132 | vd->vdev_cant_read = B_FALSE; | |
1133 | vd->vdev_cant_write = B_FALSE; | |
1134 | } | |
1135 | ||
1136 | vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd, | |
1137 | vdev_probe_done, vps, | |
1138 | vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE); | |
1139 | ||
428870ff BB |
1140 | /* |
1141 | * We can't change the vdev state in this context, so we | |
1142 | * kick off an async task to do it on our behalf. | |
1143 | */ | |
d164b209 BB |
1144 | if (zio != NULL) { |
1145 | vd->vdev_probe_wanted = B_TRUE; | |
1146 | spa_async_request(spa, SPA_ASYNC_PROBE); | |
1147 | } | |
b128c09f BB |
1148 | } |
1149 | ||
d164b209 BB |
1150 | if (zio != NULL) |
1151 | zio_add_child(zio, pio); | |
b128c09f | 1152 | |
d164b209 | 1153 | mutex_exit(&vd->vdev_probe_lock); |
b128c09f | 1154 | |
d164b209 BB |
1155 | if (vps == NULL) { |
1156 | ASSERT(zio != NULL); | |
1157 | return (NULL); | |
1158 | } | |
b128c09f | 1159 | |
1c27024e | 1160 | for (int l = 1; l < VDEV_LABELS; l++) { |
d164b209 | 1161 | zio_nowait(zio_read_phys(pio, vd, |
b128c09f | 1162 | vdev_label_offset(vd->vdev_psize, l, |
a6255b7f DQ |
1163 | offsetof(vdev_label_t, vl_pad2)), VDEV_PAD_SIZE, |
1164 | abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE), | |
b128c09f BB |
1165 | ZIO_CHECKSUM_OFF, vdev_probe_done, vps, |
1166 | ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE)); | |
1167 | } | |
1168 | ||
d164b209 BB |
1169 | if (zio == NULL) |
1170 | return (pio); | |
1171 | ||
1172 | zio_nowait(pio); | |
1173 | return (NULL); | |
34dc7c2f BB |
1174 | } |
1175 | ||
45d1cae3 BB |
1176 | static void |
1177 | vdev_open_child(void *arg) | |
1178 | { | |
1179 | vdev_t *vd = arg; | |
1180 | ||
1181 | vd->vdev_open_thread = curthread; | |
1182 | vd->vdev_open_error = vdev_open(vd); | |
1183 | vd->vdev_open_thread = NULL; | |
1184 | } | |
1185 | ||
6c285672 | 1186 | static boolean_t |
428870ff BB |
1187 | vdev_uses_zvols(vdev_t *vd) |
1188 | { | |
6c285672 JL |
1189 | #ifdef _KERNEL |
1190 | if (zvol_is_zvol(vd->vdev_path)) | |
428870ff | 1191 | return (B_TRUE); |
6c285672 JL |
1192 | #endif |
1193 | ||
1c27024e | 1194 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
1195 | if (vdev_uses_zvols(vd->vdev_child[c])) |
1196 | return (B_TRUE); | |
6c285672 | 1197 | |
428870ff BB |
1198 | return (B_FALSE); |
1199 | } | |
1200 | ||
45d1cae3 BB |
1201 | void |
1202 | vdev_open_children(vdev_t *vd) | |
1203 | { | |
1204 | taskq_t *tq; | |
1205 | int children = vd->vdev_children; | |
1206 | ||
428870ff BB |
1207 | /* |
1208 | * in order to handle pools on top of zvols, do the opens | |
1209 | * in a single thread so that the same thread holds the | |
1210 | * spa_namespace_lock | |
1211 | */ | |
1212 | if (vdev_uses_zvols(vd)) { | |
13d9a004 | 1213 | retry_sync: |
1c27024e | 1214 | for (int c = 0; c < children; c++) |
428870ff BB |
1215 | vd->vdev_child[c]->vdev_open_error = |
1216 | vdev_open(vd->vdev_child[c]); | |
4770aa06 HJ |
1217 | } else { |
1218 | tq = taskq_create("vdev_open", children, minclsyspri, | |
1219 | children, children, TASKQ_PREPOPULATE); | |
13d9a004 BB |
1220 | if (tq == NULL) |
1221 | goto retry_sync; | |
45d1cae3 | 1222 | |
1c27024e | 1223 | for (int c = 0; c < children; c++) |
4770aa06 | 1224 | VERIFY(taskq_dispatch(tq, vdev_open_child, |
48d3eb40 | 1225 | vd->vdev_child[c], TQ_SLEEP) != TASKQID_INVALID); |
45d1cae3 | 1226 | |
4770aa06 HJ |
1227 | taskq_destroy(tq); |
1228 | } | |
1229 | ||
1230 | vd->vdev_nonrot = B_TRUE; | |
fb40095f | 1231 | |
1c27024e | 1232 | for (int c = 0; c < children; c++) |
fb40095f | 1233 | vd->vdev_nonrot &= vd->vdev_child[c]->vdev_nonrot; |
45d1cae3 BB |
1234 | } |
1235 | ||
34dc7c2f BB |
1236 | /* |
1237 | * Prepare a virtual device for access. | |
1238 | */ | |
1239 | int | |
1240 | vdev_open(vdev_t *vd) | |
1241 | { | |
fb5f0bc8 | 1242 | spa_t *spa = vd->vdev_spa; |
34dc7c2f | 1243 | int error; |
34dc7c2f | 1244 | uint64_t osize = 0; |
1bd201e7 CS |
1245 | uint64_t max_osize = 0; |
1246 | uint64_t asize, max_asize, psize; | |
34dc7c2f BB |
1247 | uint64_t ashift = 0; |
1248 | ||
45d1cae3 BB |
1249 | ASSERT(vd->vdev_open_thread == curthread || |
1250 | spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
34dc7c2f BB |
1251 | ASSERT(vd->vdev_state == VDEV_STATE_CLOSED || |
1252 | vd->vdev_state == VDEV_STATE_CANT_OPEN || | |
1253 | vd->vdev_state == VDEV_STATE_OFFLINE); | |
1254 | ||
34dc7c2f | 1255 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; |
9babb374 BB |
1256 | vd->vdev_cant_read = B_FALSE; |
1257 | vd->vdev_cant_write = B_FALSE; | |
1258 | vd->vdev_min_asize = vdev_get_min_asize(vd); | |
34dc7c2f | 1259 | |
428870ff BB |
1260 | /* |
1261 | * If this vdev is not removed, check its fault status. If it's | |
1262 | * faulted, bail out of the open. | |
1263 | */ | |
34dc7c2f BB |
1264 | if (!vd->vdev_removed && vd->vdev_faulted) { |
1265 | ASSERT(vd->vdev_children == 0); | |
428870ff BB |
1266 | ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || |
1267 | vd->vdev_label_aux == VDEV_AUX_EXTERNAL); | |
34dc7c2f | 1268 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, |
428870ff | 1269 | vd->vdev_label_aux); |
2e528b49 | 1270 | return (SET_ERROR(ENXIO)); |
34dc7c2f BB |
1271 | } else if (vd->vdev_offline) { |
1272 | ASSERT(vd->vdev_children == 0); | |
1273 | vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE); | |
2e528b49 | 1274 | return (SET_ERROR(ENXIO)); |
34dc7c2f BB |
1275 | } |
1276 | ||
1bd201e7 | 1277 | error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize, &ashift); |
34dc7c2f | 1278 | |
428870ff BB |
1279 | /* |
1280 | * Reset the vdev_reopening flag so that we actually close | |
1281 | * the vdev on error. | |
1282 | */ | |
1283 | vd->vdev_reopening = B_FALSE; | |
34dc7c2f | 1284 | if (zio_injection_enabled && error == 0) |
9babb374 | 1285 | error = zio_handle_device_injection(vd, NULL, ENXIO); |
34dc7c2f BB |
1286 | |
1287 | if (error) { | |
1288 | if (vd->vdev_removed && | |
1289 | vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED) | |
1290 | vd->vdev_removed = B_FALSE; | |
1291 | ||
1292 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1293 | vd->vdev_stat.vs_aux); | |
1294 | return (error); | |
1295 | } | |
1296 | ||
1297 | vd->vdev_removed = B_FALSE; | |
1298 | ||
428870ff BB |
1299 | /* |
1300 | * Recheck the faulted flag now that we have confirmed that | |
1301 | * the vdev is accessible. If we're faulted, bail. | |
1302 | */ | |
1303 | if (vd->vdev_faulted) { | |
1304 | ASSERT(vd->vdev_children == 0); | |
1305 | ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || | |
1306 | vd->vdev_label_aux == VDEV_AUX_EXTERNAL); | |
1307 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, | |
1308 | vd->vdev_label_aux); | |
2e528b49 | 1309 | return (SET_ERROR(ENXIO)); |
428870ff BB |
1310 | } |
1311 | ||
34dc7c2f BB |
1312 | if (vd->vdev_degraded) { |
1313 | ASSERT(vd->vdev_children == 0); | |
1314 | vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, | |
1315 | VDEV_AUX_ERR_EXCEEDED); | |
1316 | } else { | |
428870ff | 1317 | vdev_set_state(vd, B_TRUE, VDEV_STATE_HEALTHY, 0); |
34dc7c2f BB |
1318 | } |
1319 | ||
428870ff BB |
1320 | /* |
1321 | * For hole or missing vdevs we just return success. | |
1322 | */ | |
1323 | if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) | |
1324 | return (0); | |
1325 | ||
1c27024e | 1326 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f BB |
1327 | if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) { |
1328 | vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, | |
1329 | VDEV_AUX_NONE); | |
1330 | break; | |
1331 | } | |
9babb374 | 1332 | } |
34dc7c2f BB |
1333 | |
1334 | osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t)); | |
1bd201e7 | 1335 | max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t)); |
34dc7c2f BB |
1336 | |
1337 | if (vd->vdev_children == 0) { | |
1338 | if (osize < SPA_MINDEVSIZE) { | |
1339 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1340 | VDEV_AUX_TOO_SMALL); | |
2e528b49 | 1341 | return (SET_ERROR(EOVERFLOW)); |
34dc7c2f BB |
1342 | } |
1343 | psize = osize; | |
1344 | asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE); | |
1bd201e7 CS |
1345 | max_asize = max_osize - (VDEV_LABEL_START_SIZE + |
1346 | VDEV_LABEL_END_SIZE); | |
34dc7c2f BB |
1347 | } else { |
1348 | if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE - | |
1349 | (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) { | |
1350 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1351 | VDEV_AUX_TOO_SMALL); | |
2e528b49 | 1352 | return (SET_ERROR(EOVERFLOW)); |
34dc7c2f BB |
1353 | } |
1354 | psize = 0; | |
1355 | asize = osize; | |
1bd201e7 | 1356 | max_asize = max_osize; |
34dc7c2f BB |
1357 | } |
1358 | ||
9d3f7b87 OF |
1359 | /* |
1360 | * If the vdev was expanded, record this so that we can re-create the | |
1361 | * uberblock rings in labels {2,3}, during the next sync. | |
1362 | */ | |
1363 | if ((psize > vd->vdev_psize) && (vd->vdev_psize != 0)) | |
1364 | vd->vdev_copy_uberblocks = B_TRUE; | |
1365 | ||
34dc7c2f BB |
1366 | vd->vdev_psize = psize; |
1367 | ||
9babb374 | 1368 | /* |
2e215fec | 1369 | * Make sure the allocatable size hasn't shrunk too much. |
9babb374 BB |
1370 | */ |
1371 | if (asize < vd->vdev_min_asize) { | |
1372 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1373 | VDEV_AUX_BAD_LABEL); | |
2e528b49 | 1374 | return (SET_ERROR(EINVAL)); |
9babb374 BB |
1375 | } |
1376 | ||
34dc7c2f BB |
1377 | if (vd->vdev_asize == 0) { |
1378 | /* | |
1379 | * This is the first-ever open, so use the computed values. | |
b28e57cb | 1380 | * For compatibility, a different ashift can be requested. |
34dc7c2f BB |
1381 | */ |
1382 | vd->vdev_asize = asize; | |
1bd201e7 | 1383 | vd->vdev_max_asize = max_asize; |
ff61d1a4 | 1384 | if (vd->vdev_ashift == 0) { |
1385 | vd->vdev_ashift = ashift; /* use detected value */ | |
1386 | } | |
1387 | if (vd->vdev_ashift != 0 && (vd->vdev_ashift < ASHIFT_MIN || | |
1388 | vd->vdev_ashift > ASHIFT_MAX)) { | |
1389 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
1390 | VDEV_AUX_BAD_ASHIFT); | |
1391 | return (SET_ERROR(EDOM)); | |
1392 | } | |
34dc7c2f BB |
1393 | } else { |
1394 | /* | |
32a9872b GW |
1395 | * Detect if the alignment requirement has increased. |
1396 | * We don't want to make the pool unavailable, just | |
1397 | * post an event instead. | |
34dc7c2f | 1398 | */ |
32a9872b GW |
1399 | if (ashift > vd->vdev_top->vdev_ashift && |
1400 | vd->vdev_ops->vdev_op_leaf) { | |
1401 | zfs_ereport_post(FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT, | |
b5256303 | 1402 | spa, vd, NULL, NULL, 0, 0); |
34dc7c2f | 1403 | } |
32a9872b | 1404 | |
1bd201e7 | 1405 | vd->vdev_max_asize = max_asize; |
9babb374 | 1406 | } |
34dc7c2f | 1407 | |
9babb374 | 1408 | /* |
2e215fec SH |
1409 | * If all children are healthy we update asize if either: |
1410 | * The asize has increased, due to a device expansion caused by dynamic | |
1411 | * LUN growth or vdev replacement, and automatic expansion is enabled; | |
1412 | * making the additional space available. | |
1413 | * | |
1414 | * The asize has decreased, due to a device shrink usually caused by a | |
1415 | * vdev replace with a smaller device. This ensures that calculations | |
1416 | * based of max_asize and asize e.g. esize are always valid. It's safe | |
1417 | * to do this as we've already validated that asize is greater than | |
1418 | * vdev_min_asize. | |
9babb374 | 1419 | */ |
2e215fec SH |
1420 | if (vd->vdev_state == VDEV_STATE_HEALTHY && |
1421 | ((asize > vd->vdev_asize && | |
1422 | (vd->vdev_expanding || spa->spa_autoexpand)) || | |
1423 | (asize < vd->vdev_asize))) | |
9babb374 | 1424 | vd->vdev_asize = asize; |
34dc7c2f | 1425 | |
9babb374 | 1426 | vdev_set_min_asize(vd); |
34dc7c2f BB |
1427 | |
1428 | /* | |
1429 | * Ensure we can issue some IO before declaring the | |
1430 | * vdev open for business. | |
1431 | */ | |
b128c09f BB |
1432 | if (vd->vdev_ops->vdev_op_leaf && |
1433 | (error = zio_wait(vdev_probe(vd, NULL))) != 0) { | |
428870ff BB |
1434 | vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, |
1435 | VDEV_AUX_ERR_EXCEEDED); | |
34dc7c2f BB |
1436 | return (error); |
1437 | } | |
1438 | ||
c3520e7f MA |
1439 | /* |
1440 | * Track the min and max ashift values for normal data devices. | |
1441 | */ | |
1442 | if (vd->vdev_top == vd && vd->vdev_ashift != 0 && | |
1443 | !vd->vdev_islog && vd->vdev_aux == NULL) { | |
1444 | if (vd->vdev_ashift > spa->spa_max_ashift) | |
1445 | spa->spa_max_ashift = vd->vdev_ashift; | |
1446 | if (vd->vdev_ashift < spa->spa_min_ashift) | |
1447 | spa->spa_min_ashift = vd->vdev_ashift; | |
1448 | } | |
1449 | ||
34dc7c2f | 1450 | /* |
b128c09f | 1451 | * If a leaf vdev has a DTL, and seems healthy, then kick off a |
fb5f0bc8 BB |
1452 | * resilver. But don't do this if we are doing a reopen for a scrub, |
1453 | * since this would just restart the scrub we are already doing. | |
34dc7c2f | 1454 | */ |
fb5f0bc8 BB |
1455 | if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen && |
1456 | vdev_resilver_needed(vd, NULL, NULL)) | |
1457 | spa_async_request(spa, SPA_ASYNC_RESILVER); | |
34dc7c2f BB |
1458 | |
1459 | return (0); | |
1460 | } | |
1461 | ||
1462 | /* | |
1463 | * Called once the vdevs are all opened, this routine validates the label | |
1464 | * contents. This needs to be done before vdev_load() so that we don't | |
1465 | * inadvertently do repair I/Os to the wrong device. | |
1466 | * | |
c7f2d69d GW |
1467 | * If 'strict' is false ignore the spa guid check. This is necessary because |
1468 | * if the machine crashed during a re-guid the new guid might have been written | |
1469 | * to all of the vdev labels, but not the cached config. The strict check | |
1470 | * will be performed when the pool is opened again using the mos config. | |
1471 | * | |
34dc7c2f BB |
1472 | * This function will only return failure if one of the vdevs indicates that it |
1473 | * has since been destroyed or exported. This is only possible if | |
1474 | * /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state | |
1475 | * will be updated but the function will return 0. | |
1476 | */ | |
1477 | int | |
c7f2d69d | 1478 | vdev_validate(vdev_t *vd, boolean_t strict) |
34dc7c2f BB |
1479 | { |
1480 | spa_t *spa = vd->vdev_spa; | |
34dc7c2f | 1481 | nvlist_t *label; |
428870ff | 1482 | uint64_t guid = 0, top_guid; |
34dc7c2f BB |
1483 | uint64_t state; |
1484 | ||
1c27024e | 1485 | for (int c = 0; c < vd->vdev_children; c++) |
c7f2d69d | 1486 | if (vdev_validate(vd->vdev_child[c], strict) != 0) |
2e528b49 | 1487 | return (SET_ERROR(EBADF)); |
34dc7c2f BB |
1488 | |
1489 | /* | |
1490 | * If the device has already failed, or was marked offline, don't do | |
1491 | * any further validation. Otherwise, label I/O will fail and we will | |
1492 | * overwrite the previous state. | |
1493 | */ | |
b128c09f | 1494 | if (vd->vdev_ops->vdev_op_leaf && vdev_readable(vd)) { |
428870ff BB |
1495 | uint64_t aux_guid = 0; |
1496 | nvlist_t *nvl; | |
295304be GW |
1497 | uint64_t txg = spa_last_synced_txg(spa) != 0 ? |
1498 | spa_last_synced_txg(spa) : -1ULL; | |
34dc7c2f | 1499 | |
3bc7e0fb | 1500 | if ((label = vdev_label_read_config(vd, txg)) == NULL) { |
e35c5a82 | 1501 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
34dc7c2f BB |
1502 | VDEV_AUX_BAD_LABEL); |
1503 | return (0); | |
1504 | } | |
1505 | ||
428870ff BB |
1506 | /* |
1507 | * Determine if this vdev has been split off into another | |
1508 | * pool. If so, then refuse to open it. | |
1509 | */ | |
1510 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_SPLIT_GUID, | |
1511 | &aux_guid) == 0 && aux_guid == spa_guid(spa)) { | |
1512 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1513 | VDEV_AUX_SPLIT_POOL); | |
1514 | nvlist_free(label); | |
1515 | return (0); | |
1516 | } | |
1517 | ||
c7f2d69d GW |
1518 | if (strict && (nvlist_lookup_uint64(label, |
1519 | ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || | |
1520 | guid != spa_guid(spa))) { | |
34dc7c2f BB |
1521 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
1522 | VDEV_AUX_CORRUPT_DATA); | |
1523 | nvlist_free(label); | |
1524 | return (0); | |
1525 | } | |
1526 | ||
428870ff BB |
1527 | if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_VDEV_TREE, &nvl) |
1528 | != 0 || nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_ORIG_GUID, | |
1529 | &aux_guid) != 0) | |
1530 | aux_guid = 0; | |
1531 | ||
b128c09f BB |
1532 | /* |
1533 | * If this vdev just became a top-level vdev because its | |
1534 | * sibling was detached, it will have adopted the parent's | |
1535 | * vdev guid -- but the label may or may not be on disk yet. | |
1536 | * Fortunately, either version of the label will have the | |
1537 | * same top guid, so if we're a top-level vdev, we can | |
1538 | * safely compare to that instead. | |
428870ff BB |
1539 | * |
1540 | * If we split this vdev off instead, then we also check the | |
1541 | * original pool's guid. We don't want to consider the vdev | |
1542 | * corrupt if it is partway through a split operation. | |
b128c09f | 1543 | */ |
34dc7c2f | 1544 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, |
b128c09f BB |
1545 | &guid) != 0 || |
1546 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, | |
1547 | &top_guid) != 0 || | |
428870ff | 1548 | ((vd->vdev_guid != guid && vd->vdev_guid != aux_guid) && |
b128c09f | 1549 | (vd->vdev_guid != top_guid || vd != vd->vdev_top))) { |
34dc7c2f BB |
1550 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, |
1551 | VDEV_AUX_CORRUPT_DATA); | |
1552 | nvlist_free(label); | |
1553 | return (0); | |
1554 | } | |
1555 | ||
1556 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, | |
1557 | &state) != 0) { | |
1558 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
1559 | VDEV_AUX_CORRUPT_DATA); | |
1560 | nvlist_free(label); | |
1561 | return (0); | |
1562 | } | |
1563 | ||
1564 | nvlist_free(label); | |
1565 | ||
45d1cae3 | 1566 | /* |
572e2857 | 1567 | * If this is a verbatim import, no need to check the |
45d1cae3 BB |
1568 | * state of the pool. |
1569 | */ | |
572e2857 | 1570 | if (!(spa->spa_import_flags & ZFS_IMPORT_VERBATIM) && |
428870ff | 1571 | spa_load_state(spa) == SPA_LOAD_OPEN && |
34dc7c2f | 1572 | state != POOL_STATE_ACTIVE) |
2e528b49 | 1573 | return (SET_ERROR(EBADF)); |
34dc7c2f | 1574 | |
b128c09f BB |
1575 | /* |
1576 | * If we were able to open and validate a vdev that was | |
1577 | * previously marked permanently unavailable, clear that state | |
1578 | * now. | |
1579 | */ | |
1580 | if (vd->vdev_not_present) | |
1581 | vd->vdev_not_present = 0; | |
1582 | } | |
34dc7c2f BB |
1583 | |
1584 | return (0); | |
1585 | } | |
1586 | ||
1587 | /* | |
1588 | * Close a virtual device. | |
1589 | */ | |
1590 | void | |
1591 | vdev_close(vdev_t *vd) | |
1592 | { | |
428870ff | 1593 | vdev_t *pvd = vd->vdev_parent; |
1fde1e37 | 1594 | ASSERTV(spa_t *spa = vd->vdev_spa); |
fb5f0bc8 BB |
1595 | |
1596 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
1597 | ||
428870ff BB |
1598 | /* |
1599 | * If our parent is reopening, then we are as well, unless we are | |
1600 | * going offline. | |
1601 | */ | |
1602 | if (pvd != NULL && pvd->vdev_reopening) | |
1603 | vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline); | |
1604 | ||
34dc7c2f BB |
1605 | vd->vdev_ops->vdev_op_close(vd); |
1606 | ||
1607 | vdev_cache_purge(vd); | |
1608 | ||
1609 | /* | |
9babb374 | 1610 | * We record the previous state before we close it, so that if we are |
34dc7c2f BB |
1611 | * doing a reopen(), we don't generate FMA ereports if we notice that |
1612 | * it's still faulted. | |
1613 | */ | |
1614 | vd->vdev_prevstate = vd->vdev_state; | |
1615 | ||
1616 | if (vd->vdev_offline) | |
1617 | vd->vdev_state = VDEV_STATE_OFFLINE; | |
1618 | else | |
1619 | vd->vdev_state = VDEV_STATE_CLOSED; | |
1620 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; | |
1621 | } | |
1622 | ||
428870ff BB |
1623 | void |
1624 | vdev_hold(vdev_t *vd) | |
1625 | { | |
1626 | spa_t *spa = vd->vdev_spa; | |
1627 | ||
1628 | ASSERT(spa_is_root(spa)); | |
1629 | if (spa->spa_state == POOL_STATE_UNINITIALIZED) | |
1630 | return; | |
1631 | ||
1c27024e | 1632 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
1633 | vdev_hold(vd->vdev_child[c]); |
1634 | ||
1635 | if (vd->vdev_ops->vdev_op_leaf) | |
1636 | vd->vdev_ops->vdev_op_hold(vd); | |
1637 | } | |
1638 | ||
1639 | void | |
1640 | vdev_rele(vdev_t *vd) | |
1641 | { | |
d6320ddb | 1642 | ASSERT(spa_is_root(vd->vdev_spa)); |
1c27024e | 1643 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
1644 | vdev_rele(vd->vdev_child[c]); |
1645 | ||
1646 | if (vd->vdev_ops->vdev_op_leaf) | |
1647 | vd->vdev_ops->vdev_op_rele(vd); | |
1648 | } | |
1649 | ||
1650 | /* | |
1651 | * Reopen all interior vdevs and any unopened leaves. We don't actually | |
1652 | * reopen leaf vdevs which had previously been opened as they might deadlock | |
1653 | * on the spa_config_lock. Instead we only obtain the leaf's physical size. | |
1654 | * If the leaf has never been opened then open it, as usual. | |
1655 | */ | |
34dc7c2f BB |
1656 | void |
1657 | vdev_reopen(vdev_t *vd) | |
1658 | { | |
1659 | spa_t *spa = vd->vdev_spa; | |
1660 | ||
b128c09f | 1661 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); |
34dc7c2f | 1662 | |
428870ff BB |
1663 | /* set the reopening flag unless we're taking the vdev offline */ |
1664 | vd->vdev_reopening = !vd->vdev_offline; | |
34dc7c2f BB |
1665 | vdev_close(vd); |
1666 | (void) vdev_open(vd); | |
1667 | ||
1668 | /* | |
1669 | * Call vdev_validate() here to make sure we have the same device. | |
1670 | * Otherwise, a device with an invalid label could be successfully | |
1671 | * opened in response to vdev_reopen(). | |
1672 | */ | |
b128c09f BB |
1673 | if (vd->vdev_aux) { |
1674 | (void) vdev_validate_aux(vd); | |
1675 | if (vdev_readable(vd) && vdev_writeable(vd) && | |
9babb374 BB |
1676 | vd->vdev_aux == &spa->spa_l2cache && |
1677 | !l2arc_vdev_present(vd)) | |
1678 | l2arc_add_vdev(spa, vd); | |
b128c09f | 1679 | } else { |
295304be | 1680 | (void) vdev_validate(vd, B_TRUE); |
b128c09f | 1681 | } |
34dc7c2f BB |
1682 | |
1683 | /* | |
1684 | * Reassess parent vdev's health. | |
1685 | */ | |
1686 | vdev_propagate_state(vd); | |
1687 | } | |
1688 | ||
1689 | int | |
1690 | vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing) | |
1691 | { | |
1692 | int error; | |
1693 | ||
1694 | /* | |
1695 | * Normally, partial opens (e.g. of a mirror) are allowed. | |
1696 | * For a create, however, we want to fail the request if | |
1697 | * there are any components we can't open. | |
1698 | */ | |
1699 | error = vdev_open(vd); | |
1700 | ||
1701 | if (error || vd->vdev_state != VDEV_STATE_HEALTHY) { | |
1702 | vdev_close(vd); | |
1703 | return (error ? error : ENXIO); | |
1704 | } | |
1705 | ||
1706 | /* | |
93cf2076 | 1707 | * Recursively load DTLs and initialize all labels. |
34dc7c2f | 1708 | */ |
93cf2076 GW |
1709 | if ((error = vdev_dtl_load(vd)) != 0 || |
1710 | (error = vdev_label_init(vd, txg, isreplacing ? | |
34dc7c2f BB |
1711 | VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) { |
1712 | vdev_close(vd); | |
1713 | return (error); | |
1714 | } | |
1715 | ||
1716 | return (0); | |
1717 | } | |
1718 | ||
34dc7c2f | 1719 | void |
9babb374 | 1720 | vdev_metaslab_set_size(vdev_t *vd) |
34dc7c2f BB |
1721 | { |
1722 | /* | |
b8bcca18 | 1723 | * Aim for roughly metaslabs_per_vdev (default 200) metaslabs per vdev. |
34dc7c2f | 1724 | */ |
b8bcca18 | 1725 | vd->vdev_ms_shift = highbit64(vd->vdev_asize / metaslabs_per_vdev); |
34dc7c2f | 1726 | vd->vdev_ms_shift = MAX(vd->vdev_ms_shift, SPA_MAXBLOCKSHIFT); |
34dc7c2f BB |
1727 | } |
1728 | ||
1729 | void | |
1730 | vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg) | |
1731 | { | |
1732 | ASSERT(vd == vd->vdev_top); | |
428870ff | 1733 | ASSERT(!vd->vdev_ishole); |
34dc7c2f | 1734 | ASSERT(ISP2(flags)); |
572e2857 | 1735 | ASSERT(spa_writeable(vd->vdev_spa)); |
34dc7c2f BB |
1736 | |
1737 | if (flags & VDD_METASLAB) | |
1738 | (void) txg_list_add(&vd->vdev_ms_list, arg, txg); | |
1739 | ||
1740 | if (flags & VDD_DTL) | |
1741 | (void) txg_list_add(&vd->vdev_dtl_list, arg, txg); | |
1742 | ||
1743 | (void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg); | |
1744 | } | |
1745 | ||
93cf2076 GW |
1746 | void |
1747 | vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg) | |
1748 | { | |
1c27024e | 1749 | for (int c = 0; c < vd->vdev_children; c++) |
93cf2076 GW |
1750 | vdev_dirty_leaves(vd->vdev_child[c], flags, txg); |
1751 | ||
1752 | if (vd->vdev_ops->vdev_op_leaf) | |
1753 | vdev_dirty(vd->vdev_top, flags, vd, txg); | |
1754 | } | |
1755 | ||
fb5f0bc8 BB |
1756 | /* |
1757 | * DTLs. | |
1758 | * | |
1759 | * A vdev's DTL (dirty time log) is the set of transaction groups for which | |
428870ff | 1760 | * the vdev has less than perfect replication. There are four kinds of DTL: |
fb5f0bc8 BB |
1761 | * |
1762 | * DTL_MISSING: txgs for which the vdev has no valid copies of the data | |
1763 | * | |
1764 | * DTL_PARTIAL: txgs for which data is available, but not fully replicated | |
1765 | * | |
1766 | * DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon | |
1767 | * scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of | |
1768 | * txgs that was scrubbed. | |
1769 | * | |
1770 | * DTL_OUTAGE: txgs which cannot currently be read, whether due to | |
1771 | * persistent errors or just some device being offline. | |
1772 | * Unlike the other three, the DTL_OUTAGE map is not generally | |
1773 | * maintained; it's only computed when needed, typically to | |
1774 | * determine whether a device can be detached. | |
1775 | * | |
1776 | * For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device | |
1777 | * either has the data or it doesn't. | |
1778 | * | |
1779 | * For interior vdevs such as mirror and RAID-Z the picture is more complex. | |
1780 | * A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because | |
1781 | * if any child is less than fully replicated, then so is its parent. | |
1782 | * A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs, | |
1783 | * comprising only those txgs which appear in 'maxfaults' or more children; | |
1784 | * those are the txgs we don't have enough replication to read. For example, | |
1785 | * double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2); | |
1786 | * thus, its DTL_MISSING consists of the set of txgs that appear in more than | |
1787 | * two child DTL_MISSING maps. | |
1788 | * | |
1789 | * It should be clear from the above that to compute the DTLs and outage maps | |
1790 | * for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps. | |
1791 | * Therefore, that is all we keep on disk. When loading the pool, or after | |
1792 | * a configuration change, we generate all other DTLs from first principles. | |
1793 | */ | |
34dc7c2f | 1794 | void |
fb5f0bc8 | 1795 | vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) |
34dc7c2f | 1796 | { |
93cf2076 | 1797 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 BB |
1798 | |
1799 | ASSERT(t < DTL_TYPES); | |
1800 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
572e2857 | 1801 | ASSERT(spa_writeable(vd->vdev_spa)); |
fb5f0bc8 | 1802 | |
93cf2076 GW |
1803 | mutex_enter(rt->rt_lock); |
1804 | if (!range_tree_contains(rt, txg, size)) | |
1805 | range_tree_add(rt, txg, size); | |
1806 | mutex_exit(rt->rt_lock); | |
34dc7c2f BB |
1807 | } |
1808 | ||
fb5f0bc8 BB |
1809 | boolean_t |
1810 | vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) | |
34dc7c2f | 1811 | { |
93cf2076 | 1812 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 | 1813 | boolean_t dirty = B_FALSE; |
34dc7c2f | 1814 | |
fb5f0bc8 BB |
1815 | ASSERT(t < DTL_TYPES); |
1816 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
34dc7c2f | 1817 | |
93cf2076 GW |
1818 | mutex_enter(rt->rt_lock); |
1819 | if (range_tree_space(rt) != 0) | |
1820 | dirty = range_tree_contains(rt, txg, size); | |
1821 | mutex_exit(rt->rt_lock); | |
34dc7c2f BB |
1822 | |
1823 | return (dirty); | |
1824 | } | |
1825 | ||
fb5f0bc8 BB |
1826 | boolean_t |
1827 | vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t) | |
1828 | { | |
93cf2076 | 1829 | range_tree_t *rt = vd->vdev_dtl[t]; |
fb5f0bc8 BB |
1830 | boolean_t empty; |
1831 | ||
93cf2076 GW |
1832 | mutex_enter(rt->rt_lock); |
1833 | empty = (range_tree_space(rt) == 0); | |
1834 | mutex_exit(rt->rt_lock); | |
fb5f0bc8 BB |
1835 | |
1836 | return (empty); | |
1837 | } | |
1838 | ||
3d6da72d IH |
1839 | /* |
1840 | * Returns B_TRUE if vdev determines offset needs to be resilvered. | |
1841 | */ | |
1842 | boolean_t | |
1843 | vdev_dtl_need_resilver(vdev_t *vd, uint64_t offset, size_t psize) | |
1844 | { | |
1845 | ASSERT(vd != vd->vdev_spa->spa_root_vdev); | |
1846 | ||
1847 | if (vd->vdev_ops->vdev_op_need_resilver == NULL || | |
1848 | vd->vdev_ops->vdev_op_leaf) | |
1849 | return (B_TRUE); | |
1850 | ||
1851 | return (vd->vdev_ops->vdev_op_need_resilver(vd, offset, psize)); | |
1852 | } | |
1853 | ||
5d1f7fb6 GW |
1854 | /* |
1855 | * Returns the lowest txg in the DTL range. | |
1856 | */ | |
1857 | static uint64_t | |
1858 | vdev_dtl_min(vdev_t *vd) | |
1859 | { | |
93cf2076 | 1860 | range_seg_t *rs; |
5d1f7fb6 GW |
1861 | |
1862 | ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); | |
93cf2076 | 1863 | ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); |
5d1f7fb6 GW |
1864 | ASSERT0(vd->vdev_children); |
1865 | ||
93cf2076 GW |
1866 | rs = avl_first(&vd->vdev_dtl[DTL_MISSING]->rt_root); |
1867 | return (rs->rs_start - 1); | |
5d1f7fb6 GW |
1868 | } |
1869 | ||
1870 | /* | |
1871 | * Returns the highest txg in the DTL. | |
1872 | */ | |
1873 | static uint64_t | |
1874 | vdev_dtl_max(vdev_t *vd) | |
1875 | { | |
93cf2076 | 1876 | range_seg_t *rs; |
5d1f7fb6 GW |
1877 | |
1878 | ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); | |
93cf2076 | 1879 | ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); |
5d1f7fb6 GW |
1880 | ASSERT0(vd->vdev_children); |
1881 | ||
93cf2076 GW |
1882 | rs = avl_last(&vd->vdev_dtl[DTL_MISSING]->rt_root); |
1883 | return (rs->rs_end); | |
5d1f7fb6 GW |
1884 | } |
1885 | ||
1886 | /* | |
1887 | * Determine if a resilvering vdev should remove any DTL entries from | |
1888 | * its range. If the vdev was resilvering for the entire duration of the | |
1889 | * scan then it should excise that range from its DTLs. Otherwise, this | |
1890 | * vdev is considered partially resilvered and should leave its DTL | |
1891 | * entries intact. The comment in vdev_dtl_reassess() describes how we | |
1892 | * excise the DTLs. | |
1893 | */ | |
1894 | static boolean_t | |
1895 | vdev_dtl_should_excise(vdev_t *vd) | |
1896 | { | |
1897 | spa_t *spa = vd->vdev_spa; | |
1898 | dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; | |
1899 | ||
1900 | ASSERT0(scn->scn_phys.scn_errors); | |
1901 | ASSERT0(vd->vdev_children); | |
1902 | ||
335b251a MA |
1903 | if (vd->vdev_state < VDEV_STATE_DEGRADED) |
1904 | return (B_FALSE); | |
1905 | ||
5d1f7fb6 | 1906 | if (vd->vdev_resilver_txg == 0 || |
93cf2076 | 1907 | range_tree_space(vd->vdev_dtl[DTL_MISSING]) == 0) |
5d1f7fb6 GW |
1908 | return (B_TRUE); |
1909 | ||
1910 | /* | |
1911 | * When a resilver is initiated the scan will assign the scn_max_txg | |
1912 | * value to the highest txg value that exists in all DTLs. If this | |
1913 | * device's max DTL is not part of this scan (i.e. it is not in | |
1914 | * the range (scn_min_txg, scn_max_txg] then it is not eligible | |
1915 | * for excision. | |
1916 | */ | |
1917 | if (vdev_dtl_max(vd) <= scn->scn_phys.scn_max_txg) { | |
1918 | ASSERT3U(scn->scn_phys.scn_min_txg, <=, vdev_dtl_min(vd)); | |
1919 | ASSERT3U(scn->scn_phys.scn_min_txg, <, vd->vdev_resilver_txg); | |
1920 | ASSERT3U(vd->vdev_resilver_txg, <=, scn->scn_phys.scn_max_txg); | |
1921 | return (B_TRUE); | |
1922 | } | |
1923 | return (B_FALSE); | |
1924 | } | |
1925 | ||
34dc7c2f BB |
1926 | /* |
1927 | * Reassess DTLs after a config change or scrub completion. | |
1928 | */ | |
1929 | void | |
1930 | vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, int scrub_done) | |
1931 | { | |
1932 | spa_t *spa = vd->vdev_spa; | |
fb5f0bc8 | 1933 | avl_tree_t reftree; |
1c27024e | 1934 | int minref; |
34dc7c2f | 1935 | |
fb5f0bc8 | 1936 | ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); |
34dc7c2f | 1937 | |
1c27024e | 1938 | for (int c = 0; c < vd->vdev_children; c++) |
fb5f0bc8 BB |
1939 | vdev_dtl_reassess(vd->vdev_child[c], txg, |
1940 | scrub_txg, scrub_done); | |
1941 | ||
428870ff | 1942 | if (vd == spa->spa_root_vdev || vd->vdev_ishole || vd->vdev_aux) |
fb5f0bc8 BB |
1943 | return; |
1944 | ||
1945 | if (vd->vdev_ops->vdev_op_leaf) { | |
428870ff BB |
1946 | dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; |
1947 | ||
34dc7c2f | 1948 | mutex_enter(&vd->vdev_dtl_lock); |
5d1f7fb6 GW |
1949 | |
1950 | /* | |
1951 | * If we've completed a scan cleanly then determine | |
1952 | * if this vdev should remove any DTLs. We only want to | |
1953 | * excise regions on vdevs that were available during | |
1954 | * the entire duration of this scan. | |
1955 | */ | |
b128c09f | 1956 | if (scrub_txg != 0 && |
428870ff | 1957 | (spa->spa_scrub_started || |
5d1f7fb6 GW |
1958 | (scn != NULL && scn->scn_phys.scn_errors == 0)) && |
1959 | vdev_dtl_should_excise(vd)) { | |
b128c09f BB |
1960 | /* |
1961 | * We completed a scrub up to scrub_txg. If we | |
1962 | * did it without rebooting, then the scrub dtl | |
1963 | * will be valid, so excise the old region and | |
1964 | * fold in the scrub dtl. Otherwise, leave the | |
1965 | * dtl as-is if there was an error. | |
fb5f0bc8 BB |
1966 | * |
1967 | * There's little trick here: to excise the beginning | |
1968 | * of the DTL_MISSING map, we put it into a reference | |
1969 | * tree and then add a segment with refcnt -1 that | |
1970 | * covers the range [0, scrub_txg). This means | |
1971 | * that each txg in that range has refcnt -1 or 0. | |
1972 | * We then add DTL_SCRUB with a refcnt of 2, so that | |
1973 | * entries in the range [0, scrub_txg) will have a | |
1974 | * positive refcnt -- either 1 or 2. We then convert | |
1975 | * the reference tree into the new DTL_MISSING map. | |
b128c09f | 1976 | */ |
93cf2076 GW |
1977 | space_reftree_create(&reftree); |
1978 | space_reftree_add_map(&reftree, | |
1979 | vd->vdev_dtl[DTL_MISSING], 1); | |
1980 | space_reftree_add_seg(&reftree, 0, scrub_txg, -1); | |
1981 | space_reftree_add_map(&reftree, | |
1982 | vd->vdev_dtl[DTL_SCRUB], 2); | |
1983 | space_reftree_generate_map(&reftree, | |
1984 | vd->vdev_dtl[DTL_MISSING], 1); | |
1985 | space_reftree_destroy(&reftree); | |
34dc7c2f | 1986 | } |
93cf2076 GW |
1987 | range_tree_vacate(vd->vdev_dtl[DTL_PARTIAL], NULL, NULL); |
1988 | range_tree_walk(vd->vdev_dtl[DTL_MISSING], | |
1989 | range_tree_add, vd->vdev_dtl[DTL_PARTIAL]); | |
34dc7c2f | 1990 | if (scrub_done) |
93cf2076 GW |
1991 | range_tree_vacate(vd->vdev_dtl[DTL_SCRUB], NULL, NULL); |
1992 | range_tree_vacate(vd->vdev_dtl[DTL_OUTAGE], NULL, NULL); | |
fb5f0bc8 | 1993 | if (!vdev_readable(vd)) |
93cf2076 | 1994 | range_tree_add(vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL); |
fb5f0bc8 | 1995 | else |
93cf2076 GW |
1996 | range_tree_walk(vd->vdev_dtl[DTL_MISSING], |
1997 | range_tree_add, vd->vdev_dtl[DTL_OUTAGE]); | |
5d1f7fb6 GW |
1998 | |
1999 | /* | |
2000 | * If the vdev was resilvering and no longer has any | |
d14fa5db | 2001 | * DTLs then reset its resilvering flag and dirty |
2002 | * the top level so that we persist the change. | |
5d1f7fb6 GW |
2003 | */ |
2004 | if (vd->vdev_resilver_txg != 0 && | |
93cf2076 | 2005 | range_tree_space(vd->vdev_dtl[DTL_MISSING]) == 0 && |
d14fa5db | 2006 | range_tree_space(vd->vdev_dtl[DTL_OUTAGE]) == 0) { |
5d1f7fb6 | 2007 | vd->vdev_resilver_txg = 0; |
d14fa5db | 2008 | vdev_config_dirty(vd->vdev_top); |
2009 | } | |
5d1f7fb6 | 2010 | |
34dc7c2f | 2011 | mutex_exit(&vd->vdev_dtl_lock); |
b128c09f | 2012 | |
34dc7c2f BB |
2013 | if (txg != 0) |
2014 | vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg); | |
2015 | return; | |
2016 | } | |
2017 | ||
34dc7c2f | 2018 | mutex_enter(&vd->vdev_dtl_lock); |
1c27024e | 2019 | for (int t = 0; t < DTL_TYPES; t++) { |
428870ff BB |
2020 | /* account for child's outage in parent's missing map */ |
2021 | int s = (t == DTL_MISSING) ? DTL_OUTAGE: t; | |
fb5f0bc8 BB |
2022 | if (t == DTL_SCRUB) |
2023 | continue; /* leaf vdevs only */ | |
2024 | if (t == DTL_PARTIAL) | |
2025 | minref = 1; /* i.e. non-zero */ | |
2026 | else if (vd->vdev_nparity != 0) | |
2027 | minref = vd->vdev_nparity + 1; /* RAID-Z */ | |
2028 | else | |
2029 | minref = vd->vdev_children; /* any kind of mirror */ | |
93cf2076 | 2030 | space_reftree_create(&reftree); |
1c27024e | 2031 | for (int c = 0; c < vd->vdev_children; c++) { |
fb5f0bc8 BB |
2032 | vdev_t *cvd = vd->vdev_child[c]; |
2033 | mutex_enter(&cvd->vdev_dtl_lock); | |
93cf2076 | 2034 | space_reftree_add_map(&reftree, cvd->vdev_dtl[s], 1); |
fb5f0bc8 BB |
2035 | mutex_exit(&cvd->vdev_dtl_lock); |
2036 | } | |
93cf2076 GW |
2037 | space_reftree_generate_map(&reftree, vd->vdev_dtl[t], minref); |
2038 | space_reftree_destroy(&reftree); | |
34dc7c2f | 2039 | } |
fb5f0bc8 | 2040 | mutex_exit(&vd->vdev_dtl_lock); |
34dc7c2f BB |
2041 | } |
2042 | ||
93cf2076 | 2043 | int |
34dc7c2f BB |
2044 | vdev_dtl_load(vdev_t *vd) |
2045 | { | |
2046 | spa_t *spa = vd->vdev_spa; | |
34dc7c2f | 2047 | objset_t *mos = spa->spa_meta_objset; |
93cf2076 | 2048 | int error = 0; |
34dc7c2f | 2049 | |
93cf2076 GW |
2050 | if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) { |
2051 | ASSERT(!vd->vdev_ishole); | |
34dc7c2f | 2052 | |
93cf2076 GW |
2053 | error = space_map_open(&vd->vdev_dtl_sm, mos, |
2054 | vd->vdev_dtl_object, 0, -1ULL, 0, &vd->vdev_dtl_lock); | |
2055 | if (error) | |
2056 | return (error); | |
2057 | ASSERT(vd->vdev_dtl_sm != NULL); | |
34dc7c2f | 2058 | |
93cf2076 | 2059 | mutex_enter(&vd->vdev_dtl_lock); |
428870ff | 2060 | |
93cf2076 GW |
2061 | /* |
2062 | * Now that we've opened the space_map we need to update | |
2063 | * the in-core DTL. | |
2064 | */ | |
2065 | space_map_update(vd->vdev_dtl_sm); | |
34dc7c2f | 2066 | |
93cf2076 GW |
2067 | error = space_map_load(vd->vdev_dtl_sm, |
2068 | vd->vdev_dtl[DTL_MISSING], SM_ALLOC); | |
2069 | mutex_exit(&vd->vdev_dtl_lock); | |
34dc7c2f | 2070 | |
93cf2076 GW |
2071 | return (error); |
2072 | } | |
2073 | ||
1c27024e | 2074 | for (int c = 0; c < vd->vdev_children; c++) { |
93cf2076 GW |
2075 | error = vdev_dtl_load(vd->vdev_child[c]); |
2076 | if (error != 0) | |
2077 | break; | |
2078 | } | |
34dc7c2f BB |
2079 | |
2080 | return (error); | |
2081 | } | |
2082 | ||
e0ab3ab5 JS |
2083 | void |
2084 | vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, dmu_tx_t *tx) | |
2085 | { | |
2086 | spa_t *spa = vd->vdev_spa; | |
2087 | ||
2088 | VERIFY0(zap_destroy(spa->spa_meta_objset, zapobj, tx)); | |
2089 | VERIFY0(zap_remove_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, | |
2090 | zapobj, tx)); | |
2091 | } | |
2092 | ||
2093 | uint64_t | |
2094 | vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx) | |
2095 | { | |
2096 | spa_t *spa = vd->vdev_spa; | |
2097 | uint64_t zap = zap_create(spa->spa_meta_objset, DMU_OTN_ZAP_METADATA, | |
2098 | DMU_OT_NONE, 0, tx); | |
2099 | ||
2100 | ASSERT(zap != 0); | |
2101 | VERIFY0(zap_add_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, | |
2102 | zap, tx)); | |
2103 | ||
2104 | return (zap); | |
2105 | } | |
2106 | ||
2107 | void | |
2108 | vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx) | |
2109 | { | |
e0ab3ab5 JS |
2110 | if (vd->vdev_ops != &vdev_hole_ops && |
2111 | vd->vdev_ops != &vdev_missing_ops && | |
2112 | vd->vdev_ops != &vdev_root_ops && | |
2113 | !vd->vdev_top->vdev_removing) { | |
2114 | if (vd->vdev_ops->vdev_op_leaf && vd->vdev_leaf_zap == 0) { | |
2115 | vd->vdev_leaf_zap = vdev_create_link_zap(vd, tx); | |
2116 | } | |
2117 | if (vd == vd->vdev_top && vd->vdev_top_zap == 0) { | |
2118 | vd->vdev_top_zap = vdev_create_link_zap(vd, tx); | |
2119 | } | |
2120 | } | |
1c27024e | 2121 | for (uint64_t i = 0; i < vd->vdev_children; i++) { |
e0ab3ab5 JS |
2122 | vdev_construct_zaps(vd->vdev_child[i], tx); |
2123 | } | |
2124 | } | |
2125 | ||
34dc7c2f BB |
2126 | void |
2127 | vdev_dtl_sync(vdev_t *vd, uint64_t txg) | |
2128 | { | |
2129 | spa_t *spa = vd->vdev_spa; | |
93cf2076 | 2130 | range_tree_t *rt = vd->vdev_dtl[DTL_MISSING]; |
34dc7c2f | 2131 | objset_t *mos = spa->spa_meta_objset; |
93cf2076 GW |
2132 | range_tree_t *rtsync; |
2133 | kmutex_t rtlock; | |
34dc7c2f | 2134 | dmu_tx_t *tx; |
93cf2076 | 2135 | uint64_t object = space_map_object(vd->vdev_dtl_sm); |
34dc7c2f | 2136 | |
428870ff | 2137 | ASSERT(!vd->vdev_ishole); |
93cf2076 | 2138 | ASSERT(vd->vdev_ops->vdev_op_leaf); |
428870ff | 2139 | |
34dc7c2f BB |
2140 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); |
2141 | ||
93cf2076 GW |
2142 | if (vd->vdev_detached || vd->vdev_top->vdev_removing) { |
2143 | mutex_enter(&vd->vdev_dtl_lock); | |
2144 | space_map_free(vd->vdev_dtl_sm, tx); | |
2145 | space_map_close(vd->vdev_dtl_sm); | |
2146 | vd->vdev_dtl_sm = NULL; | |
2147 | mutex_exit(&vd->vdev_dtl_lock); | |
e0ab3ab5 JS |
2148 | |
2149 | /* | |
2150 | * We only destroy the leaf ZAP for detached leaves or for | |
2151 | * removed log devices. Removed data devices handle leaf ZAP | |
2152 | * cleanup later, once cancellation is no longer possible. | |
2153 | */ | |
2154 | if (vd->vdev_leaf_zap != 0 && (vd->vdev_detached || | |
2155 | vd->vdev_top->vdev_islog)) { | |
2156 | vdev_destroy_unlink_zap(vd, vd->vdev_leaf_zap, tx); | |
2157 | vd->vdev_leaf_zap = 0; | |
2158 | } | |
2159 | ||
34dc7c2f | 2160 | dmu_tx_commit(tx); |
34dc7c2f BB |
2161 | return; |
2162 | } | |
2163 | ||
93cf2076 GW |
2164 | if (vd->vdev_dtl_sm == NULL) { |
2165 | uint64_t new_object; | |
2166 | ||
2167 | new_object = space_map_alloc(mos, tx); | |
2168 | VERIFY3U(new_object, !=, 0); | |
2169 | ||
2170 | VERIFY0(space_map_open(&vd->vdev_dtl_sm, mos, new_object, | |
2171 | 0, -1ULL, 0, &vd->vdev_dtl_lock)); | |
2172 | ASSERT(vd->vdev_dtl_sm != NULL); | |
34dc7c2f BB |
2173 | } |
2174 | ||
93cf2076 | 2175 | mutex_init(&rtlock, NULL, MUTEX_DEFAULT, NULL); |
34dc7c2f | 2176 | |
93cf2076 | 2177 | rtsync = range_tree_create(NULL, NULL, &rtlock); |
34dc7c2f | 2178 | |
93cf2076 | 2179 | mutex_enter(&rtlock); |
34dc7c2f BB |
2180 | |
2181 | mutex_enter(&vd->vdev_dtl_lock); | |
93cf2076 | 2182 | range_tree_walk(rt, range_tree_add, rtsync); |
34dc7c2f BB |
2183 | mutex_exit(&vd->vdev_dtl_lock); |
2184 | ||
93cf2076 GW |
2185 | space_map_truncate(vd->vdev_dtl_sm, tx); |
2186 | space_map_write(vd->vdev_dtl_sm, rtsync, SM_ALLOC, tx); | |
2187 | range_tree_vacate(rtsync, NULL, NULL); | |
34dc7c2f | 2188 | |
93cf2076 | 2189 | range_tree_destroy(rtsync); |
34dc7c2f | 2190 | |
93cf2076 GW |
2191 | mutex_exit(&rtlock); |
2192 | mutex_destroy(&rtlock); | |
34dc7c2f | 2193 | |
93cf2076 GW |
2194 | /* |
2195 | * If the object for the space map has changed then dirty | |
2196 | * the top level so that we update the config. | |
2197 | */ | |
2198 | if (object != space_map_object(vd->vdev_dtl_sm)) { | |
2199 | zfs_dbgmsg("txg %llu, spa %s, DTL old object %llu, " | |
2200 | "new object %llu", txg, spa_name(spa), object, | |
2201 | space_map_object(vd->vdev_dtl_sm)); | |
2202 | vdev_config_dirty(vd->vdev_top); | |
2203 | } | |
34dc7c2f BB |
2204 | |
2205 | dmu_tx_commit(tx); | |
93cf2076 GW |
2206 | |
2207 | mutex_enter(&vd->vdev_dtl_lock); | |
2208 | space_map_update(vd->vdev_dtl_sm); | |
2209 | mutex_exit(&vd->vdev_dtl_lock); | |
34dc7c2f BB |
2210 | } |
2211 | ||
fb5f0bc8 BB |
2212 | /* |
2213 | * Determine whether the specified vdev can be offlined/detached/removed | |
2214 | * without losing data. | |
2215 | */ | |
2216 | boolean_t | |
2217 | vdev_dtl_required(vdev_t *vd) | |
2218 | { | |
2219 | spa_t *spa = vd->vdev_spa; | |
2220 | vdev_t *tvd = vd->vdev_top; | |
2221 | uint8_t cant_read = vd->vdev_cant_read; | |
2222 | boolean_t required; | |
2223 | ||
2224 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
2225 | ||
2226 | if (vd == spa->spa_root_vdev || vd == tvd) | |
2227 | return (B_TRUE); | |
2228 | ||
2229 | /* | |
2230 | * Temporarily mark the device as unreadable, and then determine | |
2231 | * whether this results in any DTL outages in the top-level vdev. | |
2232 | * If not, we can safely offline/detach/remove the device. | |
2233 | */ | |
2234 | vd->vdev_cant_read = B_TRUE; | |
2235 | vdev_dtl_reassess(tvd, 0, 0, B_FALSE); | |
2236 | required = !vdev_dtl_empty(tvd, DTL_OUTAGE); | |
2237 | vd->vdev_cant_read = cant_read; | |
2238 | vdev_dtl_reassess(tvd, 0, 0, B_FALSE); | |
2239 | ||
572e2857 BB |
2240 | if (!required && zio_injection_enabled) |
2241 | required = !!zio_handle_device_injection(vd, NULL, ECHILD); | |
2242 | ||
fb5f0bc8 BB |
2243 | return (required); |
2244 | } | |
2245 | ||
b128c09f BB |
2246 | /* |
2247 | * Determine if resilver is needed, and if so the txg range. | |
2248 | */ | |
2249 | boolean_t | |
2250 | vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp) | |
2251 | { | |
2252 | boolean_t needed = B_FALSE; | |
2253 | uint64_t thismin = UINT64_MAX; | |
2254 | uint64_t thismax = 0; | |
2255 | ||
2256 | if (vd->vdev_children == 0) { | |
2257 | mutex_enter(&vd->vdev_dtl_lock); | |
93cf2076 | 2258 | if (range_tree_space(vd->vdev_dtl[DTL_MISSING]) != 0 && |
fb5f0bc8 | 2259 | vdev_writeable(vd)) { |
b128c09f | 2260 | |
5d1f7fb6 GW |
2261 | thismin = vdev_dtl_min(vd); |
2262 | thismax = vdev_dtl_max(vd); | |
b128c09f BB |
2263 | needed = B_TRUE; |
2264 | } | |
2265 | mutex_exit(&vd->vdev_dtl_lock); | |
2266 | } else { | |
1c27024e | 2267 | for (int c = 0; c < vd->vdev_children; c++) { |
b128c09f BB |
2268 | vdev_t *cvd = vd->vdev_child[c]; |
2269 | uint64_t cmin, cmax; | |
2270 | ||
2271 | if (vdev_resilver_needed(cvd, &cmin, &cmax)) { | |
2272 | thismin = MIN(thismin, cmin); | |
2273 | thismax = MAX(thismax, cmax); | |
2274 | needed = B_TRUE; | |
2275 | } | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | if (needed && minp) { | |
2280 | *minp = thismin; | |
2281 | *maxp = thismax; | |
2282 | } | |
2283 | return (needed); | |
2284 | } | |
2285 | ||
34dc7c2f BB |
2286 | void |
2287 | vdev_load(vdev_t *vd) | |
2288 | { | |
34dc7c2f BB |
2289 | /* |
2290 | * Recursively load all children. | |
2291 | */ | |
1c27024e | 2292 | for (int c = 0; c < vd->vdev_children; c++) |
34dc7c2f BB |
2293 | vdev_load(vd->vdev_child[c]); |
2294 | ||
2295 | /* | |
2296 | * If this is a top-level vdev, initialize its metaslabs. | |
2297 | */ | |
428870ff | 2298 | if (vd == vd->vdev_top && !vd->vdev_ishole && |
34dc7c2f BB |
2299 | (vd->vdev_ashift == 0 || vd->vdev_asize == 0 || |
2300 | vdev_metaslab_init(vd, 0) != 0)) | |
2301 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2302 | VDEV_AUX_CORRUPT_DATA); | |
34dc7c2f BB |
2303 | /* |
2304 | * If this is a leaf vdev, load its DTL. | |
2305 | */ | |
2306 | if (vd->vdev_ops->vdev_op_leaf && vdev_dtl_load(vd) != 0) | |
2307 | vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
2308 | VDEV_AUX_CORRUPT_DATA); | |
2309 | } | |
2310 | ||
2311 | /* | |
2312 | * The special vdev case is used for hot spares and l2cache devices. Its | |
2313 | * sole purpose it to set the vdev state for the associated vdev. To do this, | |
2314 | * we make sure that we can open the underlying device, then try to read the | |
2315 | * label, and make sure that the label is sane and that it hasn't been | |
2316 | * repurposed to another pool. | |
2317 | */ | |
2318 | int | |
2319 | vdev_validate_aux(vdev_t *vd) | |
2320 | { | |
2321 | nvlist_t *label; | |
2322 | uint64_t guid, version; | |
2323 | uint64_t state; | |
2324 | ||
b128c09f BB |
2325 | if (!vdev_readable(vd)) |
2326 | return (0); | |
2327 | ||
3bc7e0fb | 2328 | if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) { |
34dc7c2f BB |
2329 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, |
2330 | VDEV_AUX_CORRUPT_DATA); | |
2331 | return (-1); | |
2332 | } | |
2333 | ||
2334 | if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 || | |
9ae529ec | 2335 | !SPA_VERSION_IS_SUPPORTED(version) || |
34dc7c2f BB |
2336 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 || |
2337 | guid != vd->vdev_guid || | |
2338 | nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) { | |
2339 | vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
2340 | VDEV_AUX_CORRUPT_DATA); | |
2341 | nvlist_free(label); | |
2342 | return (-1); | |
2343 | } | |
2344 | ||
2345 | /* | |
2346 | * We don't actually check the pool state here. If it's in fact in | |
2347 | * use by another pool, we update this fact on the fly when requested. | |
2348 | */ | |
2349 | nvlist_free(label); | |
2350 | return (0); | |
2351 | } | |
2352 | ||
428870ff BB |
2353 | void |
2354 | vdev_remove(vdev_t *vd, uint64_t txg) | |
2355 | { | |
2356 | spa_t *spa = vd->vdev_spa; | |
2357 | objset_t *mos = spa->spa_meta_objset; | |
2358 | dmu_tx_t *tx; | |
2359 | ||
2360 | tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg); | |
e0ab3ab5 JS |
2361 | ASSERT(vd == vd->vdev_top); |
2362 | ASSERT3U(txg, ==, spa_syncing_txg(spa)); | |
428870ff | 2363 | |
428870ff | 2364 | if (vd->vdev_ms != NULL) { |
f3a7f661 GW |
2365 | metaslab_group_t *mg = vd->vdev_mg; |
2366 | ||
2367 | metaslab_group_histogram_verify(mg); | |
2368 | metaslab_class_histogram_verify(mg->mg_class); | |
2369 | ||
1c27024e | 2370 | for (int m = 0; m < vd->vdev_ms_count; m++) { |
428870ff BB |
2371 | metaslab_t *msp = vd->vdev_ms[m]; |
2372 | ||
93cf2076 | 2373 | if (msp == NULL || msp->ms_sm == NULL) |
428870ff BB |
2374 | continue; |
2375 | ||
93cf2076 | 2376 | mutex_enter(&msp->ms_lock); |
f3a7f661 GW |
2377 | /* |
2378 | * If the metaslab was not loaded when the vdev | |
2379 | * was removed then the histogram accounting may | |
2380 | * not be accurate. Update the histogram information | |
2381 | * here so that we ensure that the metaslab group | |
2382 | * and metaslab class are up-to-date. | |
2383 | */ | |
2384 | metaslab_group_histogram_remove(mg, msp); | |
2385 | ||
93cf2076 GW |
2386 | VERIFY0(space_map_allocated(msp->ms_sm)); |
2387 | space_map_free(msp->ms_sm, tx); | |
2388 | space_map_close(msp->ms_sm); | |
2389 | msp->ms_sm = NULL; | |
2390 | mutex_exit(&msp->ms_lock); | |
428870ff | 2391 | } |
f3a7f661 GW |
2392 | |
2393 | metaslab_group_histogram_verify(mg); | |
2394 | metaslab_class_histogram_verify(mg->mg_class); | |
1c27024e | 2395 | for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) |
f3a7f661 GW |
2396 | ASSERT0(mg->mg_histogram[i]); |
2397 | ||
428870ff BB |
2398 | } |
2399 | ||
2400 | if (vd->vdev_ms_array) { | |
2401 | (void) dmu_object_free(mos, vd->vdev_ms_array, tx); | |
2402 | vd->vdev_ms_array = 0; | |
428870ff | 2403 | } |
e0ab3ab5 JS |
2404 | |
2405 | if (vd->vdev_islog && vd->vdev_top_zap != 0) { | |
2406 | vdev_destroy_unlink_zap(vd, vd->vdev_top_zap, tx); | |
2407 | vd->vdev_top_zap = 0; | |
2408 | } | |
428870ff BB |
2409 | dmu_tx_commit(tx); |
2410 | } | |
2411 | ||
34dc7c2f BB |
2412 | void |
2413 | vdev_sync_done(vdev_t *vd, uint64_t txg) | |
2414 | { | |
2415 | metaslab_t *msp; | |
428870ff BB |
2416 | boolean_t reassess = !txg_list_empty(&vd->vdev_ms_list, TXG_CLEAN(txg)); |
2417 | ||
2418 | ASSERT(!vd->vdev_ishole); | |
34dc7c2f | 2419 | |
c65aa5b2 | 2420 | while ((msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg)))) |
34dc7c2f | 2421 | metaslab_sync_done(msp, txg); |
428870ff BB |
2422 | |
2423 | if (reassess) | |
2424 | metaslab_sync_reassess(vd->vdev_mg); | |
34dc7c2f BB |
2425 | } |
2426 | ||
2427 | void | |
2428 | vdev_sync(vdev_t *vd, uint64_t txg) | |
2429 | { | |
2430 | spa_t *spa = vd->vdev_spa; | |
2431 | vdev_t *lvd; | |
2432 | metaslab_t *msp; | |
2433 | dmu_tx_t *tx; | |
2434 | ||
428870ff BB |
2435 | ASSERT(!vd->vdev_ishole); |
2436 | ||
34dc7c2f BB |
2437 | if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0) { |
2438 | ASSERT(vd == vd->vdev_top); | |
2439 | tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
2440 | vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset, | |
2441 | DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx); | |
2442 | ASSERT(vd->vdev_ms_array != 0); | |
2443 | vdev_config_dirty(vd); | |
2444 | dmu_tx_commit(tx); | |
2445 | } | |
2446 | ||
428870ff BB |
2447 | /* |
2448 | * Remove the metadata associated with this vdev once it's empty. | |
2449 | */ | |
2450 | if (vd->vdev_stat.vs_alloc == 0 && vd->vdev_removing) | |
2451 | vdev_remove(vd, txg); | |
2452 | ||
34dc7c2f BB |
2453 | while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) { |
2454 | metaslab_sync(msp, txg); | |
2455 | (void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg)); | |
2456 | } | |
2457 | ||
2458 | while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL) | |
2459 | vdev_dtl_sync(lvd, txg); | |
2460 | ||
2461 | (void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg)); | |
2462 | } | |
2463 | ||
2464 | uint64_t | |
2465 | vdev_psize_to_asize(vdev_t *vd, uint64_t psize) | |
2466 | { | |
2467 | return (vd->vdev_ops->vdev_op_asize(vd, psize)); | |
2468 | } | |
2469 | ||
34dc7c2f BB |
2470 | /* |
2471 | * Mark the given vdev faulted. A faulted vdev behaves as if the device could | |
2472 | * not be opened, and no I/O is attempted. | |
2473 | */ | |
2474 | int | |
428870ff | 2475 | vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux) |
34dc7c2f | 2476 | { |
572e2857 | 2477 | vdev_t *vd, *tvd; |
34dc7c2f | 2478 | |
428870ff | 2479 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 2480 | |
b128c09f BB |
2481 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
2482 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f | 2483 | |
34dc7c2f | 2484 | if (!vd->vdev_ops->vdev_op_leaf) |
b128c09f | 2485 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 2486 | |
572e2857 BB |
2487 | tvd = vd->vdev_top; |
2488 | ||
4a283c7f TH |
2489 | /* |
2490 | * If user did a 'zpool offline -f' then make the fault persist across | |
2491 | * reboots. | |
2492 | */ | |
2493 | if (aux == VDEV_AUX_EXTERNAL_PERSIST) { | |
2494 | /* | |
2495 | * There are two kinds of forced faults: temporary and | |
2496 | * persistent. Temporary faults go away at pool import, while | |
2497 | * persistent faults stay set. Both types of faults can be | |
2498 | * cleared with a zpool clear. | |
2499 | * | |
2500 | * We tell if a vdev is persistently faulted by looking at the | |
2501 | * ZPOOL_CONFIG_AUX_STATE nvpair. If it's set to "external" at | |
2502 | * import then it's a persistent fault. Otherwise, it's | |
2503 | * temporary. We get ZPOOL_CONFIG_AUX_STATE set to "external" | |
2504 | * by setting vd.vdev_stat.vs_aux to VDEV_AUX_EXTERNAL. This | |
2505 | * tells vdev_config_generate() (which gets run later) to set | |
2506 | * ZPOOL_CONFIG_AUX_STATE to "external" in the nvlist. | |
2507 | */ | |
2508 | vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL; | |
2509 | vd->vdev_tmpoffline = B_FALSE; | |
2510 | aux = VDEV_AUX_EXTERNAL; | |
2511 | } else { | |
2512 | vd->vdev_tmpoffline = B_TRUE; | |
2513 | } | |
2514 | ||
428870ff BB |
2515 | /* |
2516 | * We don't directly use the aux state here, but if we do a | |
2517 | * vdev_reopen(), we need this value to be present to remember why we | |
2518 | * were faulted. | |
2519 | */ | |
2520 | vd->vdev_label_aux = aux; | |
2521 | ||
34dc7c2f BB |
2522 | /* |
2523 | * Faulted state takes precedence over degraded. | |
2524 | */ | |
428870ff | 2525 | vd->vdev_delayed_close = B_FALSE; |
34dc7c2f BB |
2526 | vd->vdev_faulted = 1ULL; |
2527 | vd->vdev_degraded = 0ULL; | |
428870ff | 2528 | vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, aux); |
34dc7c2f BB |
2529 | |
2530 | /* | |
428870ff BB |
2531 | * If this device has the only valid copy of the data, then |
2532 | * back off and simply mark the vdev as degraded instead. | |
34dc7c2f | 2533 | */ |
572e2857 | 2534 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && vdev_dtl_required(vd)) { |
34dc7c2f BB |
2535 | vd->vdev_degraded = 1ULL; |
2536 | vd->vdev_faulted = 0ULL; | |
2537 | ||
2538 | /* | |
2539 | * If we reopen the device and it's not dead, only then do we | |
2540 | * mark it degraded. | |
2541 | */ | |
572e2857 | 2542 | vdev_reopen(tvd); |
34dc7c2f | 2543 | |
428870ff BB |
2544 | if (vdev_readable(vd)) |
2545 | vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, aux); | |
34dc7c2f BB |
2546 | } |
2547 | ||
b128c09f | 2548 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
2549 | } |
2550 | ||
2551 | /* | |
2552 | * Mark the given vdev degraded. A degraded vdev is purely an indication to the | |
2553 | * user that something is wrong. The vdev continues to operate as normal as far | |
2554 | * as I/O is concerned. | |
2555 | */ | |
2556 | int | |
428870ff | 2557 | vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux) |
34dc7c2f | 2558 | { |
b128c09f | 2559 | vdev_t *vd; |
34dc7c2f | 2560 | |
428870ff | 2561 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 2562 | |
b128c09f BB |
2563 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
2564 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f | 2565 | |
34dc7c2f | 2566 | if (!vd->vdev_ops->vdev_op_leaf) |
b128c09f | 2567 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f BB |
2568 | |
2569 | /* | |
2570 | * If the vdev is already faulted, then don't do anything. | |
2571 | */ | |
b128c09f BB |
2572 | if (vd->vdev_faulted || vd->vdev_degraded) |
2573 | return (spa_vdev_state_exit(spa, NULL, 0)); | |
34dc7c2f BB |
2574 | |
2575 | vd->vdev_degraded = 1ULL; | |
2576 | if (!vdev_is_dead(vd)) | |
2577 | vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, | |
428870ff | 2578 | aux); |
34dc7c2f | 2579 | |
b128c09f | 2580 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
2581 | } |
2582 | ||
2583 | /* | |
d3cc8b15 WA |
2584 | * Online the given vdev. |
2585 | * | |
2586 | * If 'ZFS_ONLINE_UNSPARE' is set, it implies two things. First, any attached | |
2587 | * spare device should be detached when the device finishes resilvering. | |
2588 | * Second, the online should be treated like a 'test' online case, so no FMA | |
2589 | * events are generated if the device fails to open. | |
34dc7c2f BB |
2590 | */ |
2591 | int | |
b128c09f | 2592 | vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate) |
34dc7c2f | 2593 | { |
9babb374 | 2594 | vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev; |
153b2285 YP |
2595 | boolean_t wasoffline; |
2596 | vdev_state_t oldstate; | |
34dc7c2f | 2597 | |
428870ff | 2598 | spa_vdev_state_enter(spa, SCL_NONE); |
34dc7c2f | 2599 | |
b128c09f BB |
2600 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
2601 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f BB |
2602 | |
2603 | if (!vd->vdev_ops->vdev_op_leaf) | |
b128c09f | 2604 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 2605 | |
153b2285 YP |
2606 | wasoffline = (vd->vdev_offline || vd->vdev_tmpoffline); |
2607 | oldstate = vd->vdev_state; | |
fb390aaf | 2608 | |
9babb374 | 2609 | tvd = vd->vdev_top; |
34dc7c2f BB |
2610 | vd->vdev_offline = B_FALSE; |
2611 | vd->vdev_tmpoffline = B_FALSE; | |
b128c09f BB |
2612 | vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE); |
2613 | vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT); | |
9babb374 BB |
2614 | |
2615 | /* XXX - L2ARC 1.0 does not support expansion */ | |
2616 | if (!vd->vdev_aux) { | |
2617 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) | |
2618 | pvd->vdev_expanding = !!(flags & ZFS_ONLINE_EXPAND); | |
2619 | } | |
2620 | ||
2621 | vdev_reopen(tvd); | |
34dc7c2f BB |
2622 | vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE; |
2623 | ||
9babb374 BB |
2624 | if (!vd->vdev_aux) { |
2625 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) | |
2626 | pvd->vdev_expanding = B_FALSE; | |
2627 | } | |
2628 | ||
34dc7c2f BB |
2629 | if (newstate) |
2630 | *newstate = vd->vdev_state; | |
2631 | if ((flags & ZFS_ONLINE_UNSPARE) && | |
2632 | !vdev_is_dead(vd) && vd->vdev_parent && | |
2633 | vd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
2634 | vd->vdev_parent->vdev_child[0] == vd) | |
2635 | vd->vdev_unspare = B_TRUE; | |
2636 | ||
9babb374 BB |
2637 | if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) { |
2638 | ||
2639 | /* XXX - L2ARC 1.0 does not support expansion */ | |
2640 | if (vd->vdev_aux) | |
2641 | return (spa_vdev_state_exit(spa, vd, ENOTSUP)); | |
2642 | spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); | |
2643 | } | |
fb390aaf | 2644 | |
153b2285 YP |
2645 | if (wasoffline || |
2646 | (oldstate < VDEV_STATE_DEGRADED && | |
2647 | vd->vdev_state >= VDEV_STATE_DEGRADED)) | |
12fa0466 | 2648 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_ONLINE); |
fb390aaf | 2649 | |
fb5f0bc8 | 2650 | return (spa_vdev_state_exit(spa, vd, 0)); |
34dc7c2f BB |
2651 | } |
2652 | ||
428870ff BB |
2653 | static int |
2654 | vdev_offline_locked(spa_t *spa, uint64_t guid, uint64_t flags) | |
34dc7c2f | 2655 | { |
9babb374 | 2656 | vdev_t *vd, *tvd; |
428870ff BB |
2657 | int error = 0; |
2658 | uint64_t generation; | |
2659 | metaslab_group_t *mg; | |
34dc7c2f | 2660 | |
428870ff BB |
2661 | top: |
2662 | spa_vdev_state_enter(spa, SCL_ALLOC); | |
34dc7c2f | 2663 | |
b128c09f BB |
2664 | if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) |
2665 | return (spa_vdev_state_exit(spa, NULL, ENODEV)); | |
34dc7c2f BB |
2666 | |
2667 | if (!vd->vdev_ops->vdev_op_leaf) | |
b128c09f | 2668 | return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); |
34dc7c2f | 2669 | |
9babb374 | 2670 | tvd = vd->vdev_top; |
428870ff BB |
2671 | mg = tvd->vdev_mg; |
2672 | generation = spa->spa_config_generation + 1; | |
9babb374 | 2673 | |
34dc7c2f BB |
2674 | /* |
2675 | * If the device isn't already offline, try to offline it. | |
2676 | */ | |
2677 | if (!vd->vdev_offline) { | |
2678 | /* | |
fb5f0bc8 | 2679 | * If this device has the only valid copy of some data, |
9babb374 BB |
2680 | * don't allow it to be offlined. Log devices are always |
2681 | * expendable. | |
34dc7c2f | 2682 | */ |
9babb374 BB |
2683 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && |
2684 | vdev_dtl_required(vd)) | |
b128c09f | 2685 | return (spa_vdev_state_exit(spa, NULL, EBUSY)); |
34dc7c2f | 2686 | |
428870ff BB |
2687 | /* |
2688 | * If the top-level is a slog and it has had allocations | |
2689 | * then proceed. We check that the vdev's metaslab group | |
2690 | * is not NULL since it's possible that we may have just | |
2691 | * added this vdev but not yet initialized its metaslabs. | |
2692 | */ | |
2693 | if (tvd->vdev_islog && mg != NULL) { | |
2694 | /* | |
2695 | * Prevent any future allocations. | |
2696 | */ | |
2697 | metaslab_group_passivate(mg); | |
2698 | (void) spa_vdev_state_exit(spa, vd, 0); | |
2699 | ||
2700 | error = spa_offline_log(spa); | |
2701 | ||
2702 | spa_vdev_state_enter(spa, SCL_ALLOC); | |
2703 | ||
2704 | /* | |
2705 | * Check to see if the config has changed. | |
2706 | */ | |
2707 | if (error || generation != spa->spa_config_generation) { | |
2708 | metaslab_group_activate(mg); | |
2709 | if (error) | |
2710 | return (spa_vdev_state_exit(spa, | |
2711 | vd, error)); | |
2712 | (void) spa_vdev_state_exit(spa, vd, 0); | |
2713 | goto top; | |
2714 | } | |
c99c9001 | 2715 | ASSERT0(tvd->vdev_stat.vs_alloc); |
428870ff BB |
2716 | } |
2717 | ||
34dc7c2f BB |
2718 | /* |
2719 | * Offline this device and reopen its top-level vdev. | |
9babb374 BB |
2720 | * If the top-level vdev is a log device then just offline |
2721 | * it. Otherwise, if this action results in the top-level | |
2722 | * vdev becoming unusable, undo it and fail the request. | |
34dc7c2f BB |
2723 | */ |
2724 | vd->vdev_offline = B_TRUE; | |
9babb374 BB |
2725 | vdev_reopen(tvd); |
2726 | ||
2727 | if (!tvd->vdev_islog && vd->vdev_aux == NULL && | |
2728 | vdev_is_dead(tvd)) { | |
34dc7c2f | 2729 | vd->vdev_offline = B_FALSE; |
9babb374 | 2730 | vdev_reopen(tvd); |
b128c09f | 2731 | return (spa_vdev_state_exit(spa, NULL, EBUSY)); |
34dc7c2f | 2732 | } |
428870ff BB |
2733 | |
2734 | /* | |
2735 | * Add the device back into the metaslab rotor so that | |
2736 | * once we online the device it's open for business. | |
2737 | */ | |
2738 | if (tvd->vdev_islog && mg != NULL) | |
2739 | metaslab_group_activate(mg); | |
34dc7c2f BB |
2740 | } |
2741 | ||
b128c09f | 2742 | vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY); |
34dc7c2f | 2743 | |
428870ff BB |
2744 | return (spa_vdev_state_exit(spa, vd, 0)); |
2745 | } | |
9babb374 | 2746 | |
428870ff BB |
2747 | int |
2748 | vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags) | |
2749 | { | |
2750 | int error; | |
9babb374 | 2751 | |
428870ff BB |
2752 | mutex_enter(&spa->spa_vdev_top_lock); |
2753 | error = vdev_offline_locked(spa, guid, flags); | |
2754 | mutex_exit(&spa->spa_vdev_top_lock); | |
2755 | ||
2756 | return (error); | |
34dc7c2f BB |
2757 | } |
2758 | ||
2759 | /* | |
2760 | * Clear the error counts associated with this vdev. Unlike vdev_online() and | |
2761 | * vdev_offline(), we assume the spa config is locked. We also clear all | |
2762 | * children. If 'vd' is NULL, then the user wants to clear all vdevs. | |
34dc7c2f BB |
2763 | */ |
2764 | void | |
b128c09f | 2765 | vdev_clear(spa_t *spa, vdev_t *vd) |
34dc7c2f | 2766 | { |
b128c09f BB |
2767 | vdev_t *rvd = spa->spa_root_vdev; |
2768 | ||
2769 | ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
34dc7c2f BB |
2770 | |
2771 | if (vd == NULL) | |
b128c09f | 2772 | vd = rvd; |
34dc7c2f BB |
2773 | |
2774 | vd->vdev_stat.vs_read_errors = 0; | |
2775 | vd->vdev_stat.vs_write_errors = 0; | |
2776 | vd->vdev_stat.vs_checksum_errors = 0; | |
34dc7c2f | 2777 | |
1c27024e | 2778 | for (int c = 0; c < vd->vdev_children; c++) |
b128c09f | 2779 | vdev_clear(spa, vd->vdev_child[c]); |
34dc7c2f BB |
2780 | |
2781 | /* | |
b128c09f BB |
2782 | * If we're in the FAULTED state or have experienced failed I/O, then |
2783 | * clear the persistent state and attempt to reopen the device. We | |
2784 | * also mark the vdev config dirty, so that the new faulted state is | |
2785 | * written out to disk. | |
34dc7c2f | 2786 | */ |
b128c09f BB |
2787 | if (vd->vdev_faulted || vd->vdev_degraded || |
2788 | !vdev_readable(vd) || !vdev_writeable(vd)) { | |
428870ff | 2789 | /* |
4e33ba4c | 2790 | * When reopening in response to a clear event, it may be due to |
428870ff BB |
2791 | * a fmadm repair request. In this case, if the device is |
2792 | * still broken, we want to still post the ereport again. | |
2793 | */ | |
2794 | vd->vdev_forcefault = B_TRUE; | |
2795 | ||
572e2857 | 2796 | vd->vdev_faulted = vd->vdev_degraded = 0ULL; |
b128c09f BB |
2797 | vd->vdev_cant_read = B_FALSE; |
2798 | vd->vdev_cant_write = B_FALSE; | |
4a283c7f | 2799 | vd->vdev_stat.vs_aux = 0; |
b128c09f | 2800 | |
572e2857 | 2801 | vdev_reopen(vd == rvd ? rvd : vd->vdev_top); |
34dc7c2f | 2802 | |
428870ff BB |
2803 | vd->vdev_forcefault = B_FALSE; |
2804 | ||
572e2857 | 2805 | if (vd != rvd && vdev_writeable(vd->vdev_top)) |
b128c09f BB |
2806 | vdev_state_dirty(vd->vdev_top); |
2807 | ||
2808 | if (vd->vdev_aux == NULL && !vdev_is_dead(vd)) | |
34dc7c2f BB |
2809 | spa_async_request(spa, SPA_ASYNC_RESILVER); |
2810 | ||
12fa0466 | 2811 | spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_CLEAR); |
34dc7c2f | 2812 | } |
428870ff BB |
2813 | |
2814 | /* | |
2815 | * When clearing a FMA-diagnosed fault, we always want to | |
2816 | * unspare the device, as we assume that the original spare was | |
2817 | * done in response to the FMA fault. | |
2818 | */ | |
2819 | if (!vdev_is_dead(vd) && vd->vdev_parent != NULL && | |
2820 | vd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
2821 | vd->vdev_parent->vdev_child[0] == vd) | |
2822 | vd->vdev_unspare = B_TRUE; | |
34dc7c2f BB |
2823 | } |
2824 | ||
b128c09f BB |
2825 | boolean_t |
2826 | vdev_is_dead(vdev_t *vd) | |
2827 | { | |
428870ff BB |
2828 | /* |
2829 | * Holes and missing devices are always considered "dead". | |
2830 | * This simplifies the code since we don't have to check for | |
2831 | * these types of devices in the various code paths. | |
2832 | * Instead we rely on the fact that we skip over dead devices | |
2833 | * before issuing I/O to them. | |
2834 | */ | |
2835 | return (vd->vdev_state < VDEV_STATE_DEGRADED || vd->vdev_ishole || | |
2836 | vd->vdev_ops == &vdev_missing_ops); | |
b128c09f BB |
2837 | } |
2838 | ||
2839 | boolean_t | |
34dc7c2f BB |
2840 | vdev_readable(vdev_t *vd) |
2841 | { | |
b128c09f | 2842 | return (!vdev_is_dead(vd) && !vd->vdev_cant_read); |
34dc7c2f BB |
2843 | } |
2844 | ||
b128c09f | 2845 | boolean_t |
34dc7c2f BB |
2846 | vdev_writeable(vdev_t *vd) |
2847 | { | |
b128c09f | 2848 | return (!vdev_is_dead(vd) && !vd->vdev_cant_write); |
34dc7c2f BB |
2849 | } |
2850 | ||
b128c09f BB |
2851 | boolean_t |
2852 | vdev_allocatable(vdev_t *vd) | |
34dc7c2f | 2853 | { |
fb5f0bc8 BB |
2854 | uint64_t state = vd->vdev_state; |
2855 | ||
b128c09f | 2856 | /* |
fb5f0bc8 | 2857 | * We currently allow allocations from vdevs which may be in the |
b128c09f BB |
2858 | * process of reopening (i.e. VDEV_STATE_CLOSED). If the device |
2859 | * fails to reopen then we'll catch it later when we're holding | |
fb5f0bc8 BB |
2860 | * the proper locks. Note that we have to get the vdev state |
2861 | * in a local variable because although it changes atomically, | |
2862 | * we're asking two separate questions about it. | |
b128c09f | 2863 | */ |
fb5f0bc8 | 2864 | return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) && |
3dfb57a3 DB |
2865 | !vd->vdev_cant_write && !vd->vdev_ishole && |
2866 | vd->vdev_mg->mg_initialized); | |
34dc7c2f BB |
2867 | } |
2868 | ||
b128c09f BB |
2869 | boolean_t |
2870 | vdev_accessible(vdev_t *vd, zio_t *zio) | |
34dc7c2f | 2871 | { |
b128c09f | 2872 | ASSERT(zio->io_vd == vd); |
34dc7c2f | 2873 | |
b128c09f BB |
2874 | if (vdev_is_dead(vd) || vd->vdev_remove_wanted) |
2875 | return (B_FALSE); | |
34dc7c2f | 2876 | |
b128c09f BB |
2877 | if (zio->io_type == ZIO_TYPE_READ) |
2878 | return (!vd->vdev_cant_read); | |
34dc7c2f | 2879 | |
b128c09f BB |
2880 | if (zio->io_type == ZIO_TYPE_WRITE) |
2881 | return (!vd->vdev_cant_write); | |
34dc7c2f | 2882 | |
b128c09f | 2883 | return (B_TRUE); |
34dc7c2f BB |
2884 | } |
2885 | ||
193a37cb TH |
2886 | static void |
2887 | vdev_get_child_stat(vdev_t *cvd, vdev_stat_t *vs, vdev_stat_t *cvs) | |
34dc7c2f | 2888 | { |
193a37cb TH |
2889 | int t; |
2890 | for (t = 0; t < ZIO_TYPES; t++) { | |
2891 | vs->vs_ops[t] += cvs->vs_ops[t]; | |
2892 | vs->vs_bytes[t] += cvs->vs_bytes[t]; | |
2893 | } | |
34dc7c2f | 2894 | |
193a37cb TH |
2895 | cvs->vs_scan_removing = cvd->vdev_removing; |
2896 | } | |
f3a7f661 | 2897 | |
193a37cb TH |
2898 | /* |
2899 | * Get extended stats | |
2900 | */ | |
2901 | static void | |
2902 | vdev_get_child_stat_ex(vdev_t *cvd, vdev_stat_ex_t *vsx, vdev_stat_ex_t *cvsx) | |
2903 | { | |
2904 | int t, b; | |
2905 | for (t = 0; t < ZIO_TYPES; t++) { | |
7e945072 | 2906 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_disk_histo[0]); b++) |
193a37cb | 2907 | vsx->vsx_disk_histo[t][b] += cvsx->vsx_disk_histo[t][b]; |
7e945072 TH |
2908 | |
2909 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_total_histo[0]); b++) { | |
193a37cb TH |
2910 | vsx->vsx_total_histo[t][b] += |
2911 | cvsx->vsx_total_histo[t][b]; | |
2912 | } | |
f38dfec3 | 2913 | } |
34dc7c2f | 2914 | |
193a37cb | 2915 | for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) { |
7e945072 | 2916 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_queue_histo[0]); b++) { |
193a37cb TH |
2917 | vsx->vsx_queue_histo[t][b] += |
2918 | cvsx->vsx_queue_histo[t][b]; | |
2919 | } | |
2920 | vsx->vsx_active_queue[t] += cvsx->vsx_active_queue[t]; | |
2921 | vsx->vsx_pend_queue[t] += cvsx->vsx_pend_queue[t]; | |
7e945072 TH |
2922 | |
2923 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_ind_histo[0]); b++) | |
2924 | vsx->vsx_ind_histo[t][b] += cvsx->vsx_ind_histo[t][b]; | |
2925 | ||
2926 | for (b = 0; b < ARRAY_SIZE(vsx->vsx_agg_histo[0]); b++) | |
2927 | vsx->vsx_agg_histo[t][b] += cvsx->vsx_agg_histo[t][b]; | |
193a37cb | 2928 | } |
7e945072 | 2929 | |
193a37cb TH |
2930 | } |
2931 | ||
2932 | /* | |
2933 | * Get statistics for the given vdev. | |
2934 | */ | |
2935 | static void | |
2936 | vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) | |
2937 | { | |
1c27024e | 2938 | int t; |
34dc7c2f BB |
2939 | /* |
2940 | * If we're getting stats on the root vdev, aggregate the I/O counts | |
2941 | * over all top-level vdevs (i.e. the direct children of the root). | |
2942 | */ | |
193a37cb TH |
2943 | if (!vd->vdev_ops->vdev_op_leaf) { |
2944 | if (vs) { | |
2945 | memset(vs->vs_ops, 0, sizeof (vs->vs_ops)); | |
2946 | memset(vs->vs_bytes, 0, sizeof (vs->vs_bytes)); | |
2947 | } | |
2948 | if (vsx) | |
2949 | memset(vsx, 0, sizeof (*vsx)); | |
2950 | ||
1c27024e | 2951 | for (int c = 0; c < vd->vdev_children; c++) { |
193a37cb | 2952 | vdev_t *cvd = vd->vdev_child[c]; |
34dc7c2f | 2953 | vdev_stat_t *cvs = &cvd->vdev_stat; |
193a37cb TH |
2954 | vdev_stat_ex_t *cvsx = &cvd->vdev_stat_ex; |
2955 | ||
2956 | vdev_get_stats_ex_impl(cvd, cvs, cvsx); | |
2957 | if (vs) | |
2958 | vdev_get_child_stat(cvd, vs, cvs); | |
2959 | if (vsx) | |
2960 | vdev_get_child_stat_ex(cvd, vsx, cvsx); | |
34dc7c2f | 2961 | |
193a37cb TH |
2962 | } |
2963 | } else { | |
2964 | /* | |
2965 | * We're a leaf. Just copy our ZIO active queue stats in. The | |
2966 | * other leaf stats are updated in vdev_stat_update(). | |
2967 | */ | |
2968 | if (!vsx) | |
2969 | return; | |
2970 | ||
2971 | memcpy(vsx, &vd->vdev_stat_ex, sizeof (vd->vdev_stat_ex)); | |
2972 | ||
2973 | for (t = 0; t < ARRAY_SIZE(vd->vdev_queue.vq_class); t++) { | |
2974 | vsx->vsx_active_queue[t] = | |
2975 | vd->vdev_queue.vq_class[t].vqc_active; | |
2976 | vsx->vsx_pend_queue[t] = avl_numnodes( | |
2977 | &vd->vdev_queue.vq_class[t].vqc_queued_tree); | |
34dc7c2f BB |
2978 | } |
2979 | } | |
193a37cb TH |
2980 | } |
2981 | ||
2982 | void | |
2983 | vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) | |
2984 | { | |
0f676dc2 | 2985 | vdev_t *tvd = vd->vdev_top; |
193a37cb TH |
2986 | mutex_enter(&vd->vdev_stat_lock); |
2987 | if (vs) { | |
2988 | bcopy(&vd->vdev_stat, vs, sizeof (*vs)); | |
2989 | vs->vs_timestamp = gethrtime() - vs->vs_timestamp; | |
2990 | vs->vs_state = vd->vdev_state; | |
2991 | vs->vs_rsize = vdev_get_min_asize(vd); | |
2992 | if (vd->vdev_ops->vdev_op_leaf) | |
2993 | vs->vs_rsize += VDEV_LABEL_START_SIZE + | |
2994 | VDEV_LABEL_END_SIZE; | |
0f676dc2 GM |
2995 | /* |
2996 | * Report expandable space on top-level, non-auxillary devices | |
2997 | * only. The expandable space is reported in terms of metaslab | |
2998 | * sized units since that determines how much space the pool | |
2999 | * can expand. | |
3000 | */ | |
3001 | if (vd->vdev_aux == NULL && tvd != NULL) { | |
3002 | vs->vs_esize = P2ALIGN( | |
3003 | vd->vdev_max_asize - vd->vdev_asize, | |
3004 | 1ULL << tvd->vdev_ms_shift); | |
3005 | } | |
193a37cb TH |
3006 | vs->vs_esize = vd->vdev_max_asize - vd->vdev_asize; |
3007 | if (vd->vdev_aux == NULL && vd == vd->vdev_top && | |
3008 | !vd->vdev_ishole) { | |
3009 | vs->vs_fragmentation = vd->vdev_mg->mg_fragmentation; | |
3010 | } | |
3011 | } | |
3012 | ||
3013 | ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_READER) != 0); | |
3014 | vdev_get_stats_ex_impl(vd, vs, vsx); | |
f3a7f661 | 3015 | mutex_exit(&vd->vdev_stat_lock); |
34dc7c2f BB |
3016 | } |
3017 | ||
193a37cb TH |
3018 | void |
3019 | vdev_get_stats(vdev_t *vd, vdev_stat_t *vs) | |
3020 | { | |
3021 | return (vdev_get_stats_ex(vd, vs, NULL)); | |
3022 | } | |
3023 | ||
34dc7c2f BB |
3024 | void |
3025 | vdev_clear_stats(vdev_t *vd) | |
3026 | { | |
3027 | mutex_enter(&vd->vdev_stat_lock); | |
3028 | vd->vdev_stat.vs_space = 0; | |
3029 | vd->vdev_stat.vs_dspace = 0; | |
3030 | vd->vdev_stat.vs_alloc = 0; | |
3031 | mutex_exit(&vd->vdev_stat_lock); | |
3032 | } | |
3033 | ||
428870ff BB |
3034 | void |
3035 | vdev_scan_stat_init(vdev_t *vd) | |
3036 | { | |
3037 | vdev_stat_t *vs = &vd->vdev_stat; | |
3038 | ||
1c27024e | 3039 | for (int c = 0; c < vd->vdev_children; c++) |
428870ff BB |
3040 | vdev_scan_stat_init(vd->vdev_child[c]); |
3041 | ||
3042 | mutex_enter(&vd->vdev_stat_lock); | |
3043 | vs->vs_scan_processed = 0; | |
3044 | mutex_exit(&vd->vdev_stat_lock); | |
3045 | } | |
3046 | ||
34dc7c2f | 3047 | void |
b128c09f | 3048 | vdev_stat_update(zio_t *zio, uint64_t psize) |
34dc7c2f | 3049 | { |
fb5f0bc8 BB |
3050 | spa_t *spa = zio->io_spa; |
3051 | vdev_t *rvd = spa->spa_root_vdev; | |
b128c09f | 3052 | vdev_t *vd = zio->io_vd ? zio->io_vd : rvd; |
34dc7c2f BB |
3053 | vdev_t *pvd; |
3054 | uint64_t txg = zio->io_txg; | |
3055 | vdev_stat_t *vs = &vd->vdev_stat; | |
193a37cb | 3056 | vdev_stat_ex_t *vsx = &vd->vdev_stat_ex; |
34dc7c2f BB |
3057 | zio_type_t type = zio->io_type; |
3058 | int flags = zio->io_flags; | |
3059 | ||
b128c09f BB |
3060 | /* |
3061 | * If this i/o is a gang leader, it didn't do any actual work. | |
3062 | */ | |
3063 | if (zio->io_gang_tree) | |
3064 | return; | |
3065 | ||
34dc7c2f | 3066 | if (zio->io_error == 0) { |
b128c09f BB |
3067 | /* |
3068 | * If this is a root i/o, don't count it -- we've already | |
3069 | * counted the top-level vdevs, and vdev_get_stats() will | |
3070 | * aggregate them when asked. This reduces contention on | |
3071 | * the root vdev_stat_lock and implicitly handles blocks | |
3072 | * that compress away to holes, for which there is no i/o. | |
3073 | * (Holes never create vdev children, so all the counters | |
3074 | * remain zero, which is what we want.) | |
3075 | * | |
3076 | * Note: this only applies to successful i/o (io_error == 0) | |
3077 | * because unlike i/o counts, errors are not additive. | |
3078 | * When reading a ditto block, for example, failure of | |
3079 | * one top-level vdev does not imply a root-level error. | |
3080 | */ | |
3081 | if (vd == rvd) | |
3082 | return; | |
3083 | ||
3084 | ASSERT(vd == zio->io_vd); | |
fb5f0bc8 BB |
3085 | |
3086 | if (flags & ZIO_FLAG_IO_BYPASS) | |
3087 | return; | |
3088 | ||
3089 | mutex_enter(&vd->vdev_stat_lock); | |
3090 | ||
b128c09f | 3091 | if (flags & ZIO_FLAG_IO_REPAIR) { |
572e2857 | 3092 | if (flags & ZIO_FLAG_SCAN_THREAD) { |
428870ff BB |
3093 | dsl_scan_phys_t *scn_phys = |
3094 | &spa->spa_dsl_pool->dp_scan->scn_phys; | |
3095 | uint64_t *processed = &scn_phys->scn_processed; | |
3096 | ||
3097 | /* XXX cleanup? */ | |
3098 | if (vd->vdev_ops->vdev_op_leaf) | |
3099 | atomic_add_64(processed, psize); | |
3100 | vs->vs_scan_processed += psize; | |
3101 | } | |
3102 | ||
fb5f0bc8 | 3103 | if (flags & ZIO_FLAG_SELF_HEAL) |
b128c09f | 3104 | vs->vs_self_healed += psize; |
34dc7c2f | 3105 | } |
fb5f0bc8 | 3106 | |
193a37cb TH |
3107 | /* |
3108 | * The bytes/ops/histograms are recorded at the leaf level and | |
3109 | * aggregated into the higher level vdevs in vdev_get_stats(). | |
3110 | */ | |
4eb0db42 TH |
3111 | if (vd->vdev_ops->vdev_op_leaf && |
3112 | (zio->io_priority < ZIO_PRIORITY_NUM_QUEUEABLE)) { | |
193a37cb TH |
3113 | |
3114 | vs->vs_ops[type]++; | |
3115 | vs->vs_bytes[type] += psize; | |
3116 | ||
7e945072 TH |
3117 | if (flags & ZIO_FLAG_DELEGATED) { |
3118 | vsx->vsx_agg_histo[zio->io_priority] | |
3119 | [RQ_HISTO(zio->io_size)]++; | |
3120 | } else { | |
3121 | vsx->vsx_ind_histo[zio->io_priority] | |
3122 | [RQ_HISTO(zio->io_size)]++; | |
3123 | } | |
3124 | ||
193a37cb TH |
3125 | if (zio->io_delta && zio->io_delay) { |
3126 | vsx->vsx_queue_histo[zio->io_priority] | |
7e945072 | 3127 | [L_HISTO(zio->io_delta - zio->io_delay)]++; |
193a37cb | 3128 | vsx->vsx_disk_histo[type] |
7e945072 | 3129 | [L_HISTO(zio->io_delay)]++; |
193a37cb | 3130 | vsx->vsx_total_histo[type] |
7e945072 | 3131 | [L_HISTO(zio->io_delta)]++; |
193a37cb TH |
3132 | } |
3133 | } | |
fb5f0bc8 BB |
3134 | |
3135 | mutex_exit(&vd->vdev_stat_lock); | |
34dc7c2f BB |
3136 | return; |
3137 | } | |
3138 | ||
3139 | if (flags & ZIO_FLAG_SPECULATIVE) | |
3140 | return; | |
3141 | ||
9babb374 BB |
3142 | /* |
3143 | * If this is an I/O error that is going to be retried, then ignore the | |
3144 | * error. Otherwise, the user may interpret B_FAILFAST I/O errors as | |
3145 | * hard errors, when in reality they can happen for any number of | |
3146 | * innocuous reasons (bus resets, MPxIO link failure, etc). | |
3147 | */ | |
3148 | if (zio->io_error == EIO && | |
3149 | !(zio->io_flags & ZIO_FLAG_IO_RETRY)) | |
3150 | return; | |
3151 | ||
428870ff BB |
3152 | /* |
3153 | * Intent logs writes won't propagate their error to the root | |
3154 | * I/O so don't mark these types of failures as pool-level | |
3155 | * errors. | |
3156 | */ | |
3157 | if (zio->io_vd == NULL && (zio->io_flags & ZIO_FLAG_DONT_PROPAGATE)) | |
3158 | return; | |
3159 | ||
b128c09f | 3160 | mutex_enter(&vd->vdev_stat_lock); |
9babb374 | 3161 | if (type == ZIO_TYPE_READ && !vdev_is_dead(vd)) { |
b128c09f BB |
3162 | if (zio->io_error == ECKSUM) |
3163 | vs->vs_checksum_errors++; | |
3164 | else | |
3165 | vs->vs_read_errors++; | |
34dc7c2f | 3166 | } |
9babb374 | 3167 | if (type == ZIO_TYPE_WRITE && !vdev_is_dead(vd)) |
b128c09f BB |
3168 | vs->vs_write_errors++; |
3169 | mutex_exit(&vd->vdev_stat_lock); | |
34dc7c2f | 3170 | |
fb5f0bc8 BB |
3171 | if (type == ZIO_TYPE_WRITE && txg != 0 && |
3172 | (!(flags & ZIO_FLAG_IO_REPAIR) || | |
572e2857 | 3173 | (flags & ZIO_FLAG_SCAN_THREAD) || |
428870ff | 3174 | spa->spa_claiming)) { |
fb5f0bc8 | 3175 | /* |
428870ff BB |
3176 | * This is either a normal write (not a repair), or it's |
3177 | * a repair induced by the scrub thread, or it's a repair | |
3178 | * made by zil_claim() during spa_load() in the first txg. | |
3179 | * In the normal case, we commit the DTL change in the same | |
3180 | * txg as the block was born. In the scrub-induced repair | |
3181 | * case, we know that scrubs run in first-pass syncing context, | |
3182 | * so we commit the DTL change in spa_syncing_txg(spa). | |
3183 | * In the zil_claim() case, we commit in spa_first_txg(spa). | |
fb5f0bc8 BB |
3184 | * |
3185 | * We currently do not make DTL entries for failed spontaneous | |
3186 | * self-healing writes triggered by normal (non-scrubbing) | |
3187 | * reads, because we have no transactional context in which to | |
3188 | * do so -- and it's not clear that it'd be desirable anyway. | |
3189 | */ | |
3190 | if (vd->vdev_ops->vdev_op_leaf) { | |
3191 | uint64_t commit_txg = txg; | |
572e2857 | 3192 | if (flags & ZIO_FLAG_SCAN_THREAD) { |
fb5f0bc8 BB |
3193 | ASSERT(flags & ZIO_FLAG_IO_REPAIR); |
3194 | ASSERT(spa_sync_pass(spa) == 1); | |
3195 | vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1); | |
428870ff BB |
3196 | commit_txg = spa_syncing_txg(spa); |
3197 | } else if (spa->spa_claiming) { | |
3198 | ASSERT(flags & ZIO_FLAG_IO_REPAIR); | |
3199 | commit_txg = spa_first_txg(spa); | |
fb5f0bc8 | 3200 | } |
428870ff | 3201 | ASSERT(commit_txg >= spa_syncing_txg(spa)); |
fb5f0bc8 | 3202 | if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1)) |
34dc7c2f | 3203 | return; |
fb5f0bc8 BB |
3204 | for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) |
3205 | vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1); | |
3206 | vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg); | |
34dc7c2f | 3207 | } |
fb5f0bc8 BB |
3208 | if (vd != rvd) |
3209 | vdev_dtl_dirty(vd, DTL_MISSING, txg, 1); | |
34dc7c2f BB |
3210 | } |
3211 | } | |
3212 | ||
34dc7c2f | 3213 | /* |
428870ff BB |
3214 | * Update the in-core space usage stats for this vdev, its metaslab class, |
3215 | * and the root vdev. | |
34dc7c2f BB |
3216 | */ |
3217 | void | |
428870ff BB |
3218 | vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta, |
3219 | int64_t space_delta) | |
34dc7c2f BB |
3220 | { |
3221 | int64_t dspace_delta = space_delta; | |
3222 | spa_t *spa = vd->vdev_spa; | |
3223 | vdev_t *rvd = spa->spa_root_vdev; | |
428870ff BB |
3224 | metaslab_group_t *mg = vd->vdev_mg; |
3225 | metaslab_class_t *mc = mg ? mg->mg_class : NULL; | |
34dc7c2f BB |
3226 | |
3227 | ASSERT(vd == vd->vdev_top); | |
3228 | ||
3229 | /* | |
3230 | * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion | |
3231 | * factor. We must calculate this here and not at the root vdev | |
3232 | * because the root vdev's psize-to-asize is simply the max of its | |
3233 | * childrens', thus not accurate enough for us. | |
3234 | */ | |
3235 | ASSERT((dspace_delta & (SPA_MINBLOCKSIZE-1)) == 0); | |
9babb374 | 3236 | ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache); |
34dc7c2f BB |
3237 | dspace_delta = (dspace_delta >> SPA_MINBLOCKSHIFT) * |
3238 | vd->vdev_deflate_ratio; | |
3239 | ||
3240 | mutex_enter(&vd->vdev_stat_lock); | |
34dc7c2f | 3241 | vd->vdev_stat.vs_alloc += alloc_delta; |
428870ff | 3242 | vd->vdev_stat.vs_space += space_delta; |
34dc7c2f BB |
3243 | vd->vdev_stat.vs_dspace += dspace_delta; |
3244 | mutex_exit(&vd->vdev_stat_lock); | |
3245 | ||
428870ff | 3246 | if (mc == spa_normal_class(spa)) { |
34dc7c2f | 3247 | mutex_enter(&rvd->vdev_stat_lock); |
34dc7c2f | 3248 | rvd->vdev_stat.vs_alloc += alloc_delta; |
428870ff | 3249 | rvd->vdev_stat.vs_space += space_delta; |
34dc7c2f BB |
3250 | rvd->vdev_stat.vs_dspace += dspace_delta; |
3251 | mutex_exit(&rvd->vdev_stat_lock); | |
3252 | } | |
428870ff BB |
3253 | |
3254 | if (mc != NULL) { | |
3255 | ASSERT(rvd == vd->vdev_parent); | |
3256 | ASSERT(vd->vdev_ms_count != 0); | |
3257 | ||
3258 | metaslab_class_space_update(mc, | |
3259 | alloc_delta, defer_delta, space_delta, dspace_delta); | |
3260 | } | |
34dc7c2f BB |
3261 | } |
3262 | ||
3263 | /* | |
3264 | * Mark a top-level vdev's config as dirty, placing it on the dirty list | |
3265 | * so that it will be written out next time the vdev configuration is synced. | |
3266 | * If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs. | |
3267 | */ | |
3268 | void | |
3269 | vdev_config_dirty(vdev_t *vd) | |
3270 | { | |
3271 | spa_t *spa = vd->vdev_spa; | |
3272 | vdev_t *rvd = spa->spa_root_vdev; | |
3273 | int c; | |
3274 | ||
572e2857 BB |
3275 | ASSERT(spa_writeable(spa)); |
3276 | ||
34dc7c2f | 3277 | /* |
9babb374 BB |
3278 | * If this is an aux vdev (as with l2cache and spare devices), then we |
3279 | * update the vdev config manually and set the sync flag. | |
b128c09f BB |
3280 | */ |
3281 | if (vd->vdev_aux != NULL) { | |
3282 | spa_aux_vdev_t *sav = vd->vdev_aux; | |
3283 | nvlist_t **aux; | |
3284 | uint_t naux; | |
3285 | ||
3286 | for (c = 0; c < sav->sav_count; c++) { | |
3287 | if (sav->sav_vdevs[c] == vd) | |
3288 | break; | |
3289 | } | |
3290 | ||
3291 | if (c == sav->sav_count) { | |
3292 | /* | |
3293 | * We're being removed. There's nothing more to do. | |
3294 | */ | |
3295 | ASSERT(sav->sav_sync == B_TRUE); | |
3296 | return; | |
3297 | } | |
3298 | ||
3299 | sav->sav_sync = B_TRUE; | |
3300 | ||
9babb374 BB |
3301 | if (nvlist_lookup_nvlist_array(sav->sav_config, |
3302 | ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) { | |
3303 | VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, | |
3304 | ZPOOL_CONFIG_SPARES, &aux, &naux) == 0); | |
3305 | } | |
b128c09f BB |
3306 | |
3307 | ASSERT(c < naux); | |
3308 | ||
3309 | /* | |
3310 | * Setting the nvlist in the middle if the array is a little | |
3311 | * sketchy, but it will work. | |
3312 | */ | |
3313 | nvlist_free(aux[c]); | |
428870ff | 3314 | aux[c] = vdev_config_generate(spa, vd, B_TRUE, 0); |
b128c09f BB |
3315 | |
3316 | return; | |
3317 | } | |
3318 | ||
3319 | /* | |
3320 | * The dirty list is protected by the SCL_CONFIG lock. The caller | |
3321 | * must either hold SCL_CONFIG as writer, or must be the sync thread | |
3322 | * (which holds SCL_CONFIG as reader). There's only one sync thread, | |
34dc7c2f BB |
3323 | * so this is sufficient to ensure mutual exclusion. |
3324 | */ | |
b128c09f BB |
3325 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || |
3326 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
3327 | spa_config_held(spa, SCL_CONFIG, RW_READER))); | |
34dc7c2f BB |
3328 | |
3329 | if (vd == rvd) { | |
3330 | for (c = 0; c < rvd->vdev_children; c++) | |
3331 | vdev_config_dirty(rvd->vdev_child[c]); | |
3332 | } else { | |
3333 | ASSERT(vd == vd->vdev_top); | |
3334 | ||
428870ff BB |
3335 | if (!list_link_active(&vd->vdev_config_dirty_node) && |
3336 | !vd->vdev_ishole) | |
b128c09f | 3337 | list_insert_head(&spa->spa_config_dirty_list, vd); |
34dc7c2f BB |
3338 | } |
3339 | } | |
3340 | ||
3341 | void | |
3342 | vdev_config_clean(vdev_t *vd) | |
3343 | { | |
3344 | spa_t *spa = vd->vdev_spa; | |
3345 | ||
b128c09f BB |
3346 | ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || |
3347 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
3348 | spa_config_held(spa, SCL_CONFIG, RW_READER))); | |
34dc7c2f | 3349 | |
b128c09f BB |
3350 | ASSERT(list_link_active(&vd->vdev_config_dirty_node)); |
3351 | list_remove(&spa->spa_config_dirty_list, vd); | |
34dc7c2f BB |
3352 | } |
3353 | ||
b128c09f BB |
3354 | /* |
3355 | * Mark a top-level vdev's state as dirty, so that the next pass of | |
3356 | * spa_sync() can convert this into vdev_config_dirty(). We distinguish | |
3357 | * the state changes from larger config changes because they require | |
3358 | * much less locking, and are often needed for administrative actions. | |
3359 | */ | |
3360 | void | |
3361 | vdev_state_dirty(vdev_t *vd) | |
3362 | { | |
3363 | spa_t *spa = vd->vdev_spa; | |
3364 | ||
572e2857 | 3365 | ASSERT(spa_writeable(spa)); |
b128c09f BB |
3366 | ASSERT(vd == vd->vdev_top); |
3367 | ||
3368 | /* | |
3369 | * The state list is protected by the SCL_STATE lock. The caller | |
3370 | * must either hold SCL_STATE as writer, or must be the sync thread | |
3371 | * (which holds SCL_STATE as reader). There's only one sync thread, | |
3372 | * so this is sufficient to ensure mutual exclusion. | |
3373 | */ | |
3374 | ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || | |
3375 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
3376 | spa_config_held(spa, SCL_STATE, RW_READER))); | |
3377 | ||
428870ff | 3378 | if (!list_link_active(&vd->vdev_state_dirty_node) && !vd->vdev_ishole) |
b128c09f BB |
3379 | list_insert_head(&spa->spa_state_dirty_list, vd); |
3380 | } | |
3381 | ||
3382 | void | |
3383 | vdev_state_clean(vdev_t *vd) | |
3384 | { | |
3385 | spa_t *spa = vd->vdev_spa; | |
3386 | ||
3387 | ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || | |
3388 | (dsl_pool_sync_context(spa_get_dsl(spa)) && | |
3389 | spa_config_held(spa, SCL_STATE, RW_READER))); | |
3390 | ||
3391 | ASSERT(list_link_active(&vd->vdev_state_dirty_node)); | |
3392 | list_remove(&spa->spa_state_dirty_list, vd); | |
3393 | } | |
3394 | ||
3395 | /* | |
3396 | * Propagate vdev state up from children to parent. | |
3397 | */ | |
34dc7c2f BB |
3398 | void |
3399 | vdev_propagate_state(vdev_t *vd) | |
3400 | { | |
fb5f0bc8 BB |
3401 | spa_t *spa = vd->vdev_spa; |
3402 | vdev_t *rvd = spa->spa_root_vdev; | |
34dc7c2f BB |
3403 | int degraded = 0, faulted = 0; |
3404 | int corrupted = 0; | |
34dc7c2f BB |
3405 | vdev_t *child; |
3406 | ||
3407 | if (vd->vdev_children > 0) { | |
1c27024e | 3408 | for (int c = 0; c < vd->vdev_children; c++) { |
34dc7c2f | 3409 | child = vd->vdev_child[c]; |
b128c09f | 3410 | |
428870ff BB |
3411 | /* |
3412 | * Don't factor holes into the decision. | |
3413 | */ | |
3414 | if (child->vdev_ishole) | |
3415 | continue; | |
3416 | ||
b128c09f | 3417 | if (!vdev_readable(child) || |
fb5f0bc8 | 3418 | (!vdev_writeable(child) && spa_writeable(spa))) { |
b128c09f BB |
3419 | /* |
3420 | * Root special: if there is a top-level log | |
3421 | * device, treat the root vdev as if it were | |
3422 | * degraded. | |
3423 | */ | |
3424 | if (child->vdev_islog && vd == rvd) | |
3425 | degraded++; | |
3426 | else | |
3427 | faulted++; | |
3428 | } else if (child->vdev_state <= VDEV_STATE_DEGRADED) { | |
34dc7c2f | 3429 | degraded++; |
b128c09f | 3430 | } |
34dc7c2f BB |
3431 | |
3432 | if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA) | |
3433 | corrupted++; | |
3434 | } | |
3435 | ||
3436 | vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded); | |
3437 | ||
3438 | /* | |
b128c09f | 3439 | * Root special: if there is a top-level vdev that cannot be |
34dc7c2f BB |
3440 | * opened due to corrupted metadata, then propagate the root |
3441 | * vdev's aux state as 'corrupt' rather than 'insufficient | |
3442 | * replicas'. | |
3443 | */ | |
3444 | if (corrupted && vd == rvd && | |
3445 | rvd->vdev_state == VDEV_STATE_CANT_OPEN) | |
3446 | vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN, | |
3447 | VDEV_AUX_CORRUPT_DATA); | |
3448 | } | |
3449 | ||
b128c09f | 3450 | if (vd->vdev_parent) |
34dc7c2f BB |
3451 | vdev_propagate_state(vd->vdev_parent); |
3452 | } | |
3453 | ||
3454 | /* | |
3455 | * Set a vdev's state. If this is during an open, we don't update the parent | |
3456 | * state, because we're in the process of opening children depth-first. | |
3457 | * Otherwise, we propagate the change to the parent. | |
3458 | * | |
3459 | * If this routine places a device in a faulted state, an appropriate ereport is | |
3460 | * generated. | |
3461 | */ | |
3462 | void | |
3463 | vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux) | |
3464 | { | |
3465 | uint64_t save_state; | |
b128c09f | 3466 | spa_t *spa = vd->vdev_spa; |
34dc7c2f BB |
3467 | |
3468 | if (state == vd->vdev_state) { | |
976246fa DB |
3469 | /* |
3470 | * Since vdev_offline() code path is already in an offline | |
3471 | * state we can miss a statechange event to OFFLINE. Check | |
3472 | * the previous state to catch this condition. | |
3473 | */ | |
3474 | if (vd->vdev_ops->vdev_op_leaf && | |
3475 | (state == VDEV_STATE_OFFLINE) && | |
3476 | (vd->vdev_prevstate >= VDEV_STATE_FAULTED)) { | |
3477 | /* post an offline state change */ | |
3478 | zfs_post_state_change(spa, vd, vd->vdev_prevstate); | |
3479 | } | |
34dc7c2f BB |
3480 | vd->vdev_stat.vs_aux = aux; |
3481 | return; | |
3482 | } | |
3483 | ||
3484 | save_state = vd->vdev_state; | |
3485 | ||
3486 | vd->vdev_state = state; | |
3487 | vd->vdev_stat.vs_aux = aux; | |
3488 | ||
3489 | /* | |
3490 | * If we are setting the vdev state to anything but an open state, then | |
428870ff BB |
3491 | * always close the underlying device unless the device has requested |
3492 | * a delayed close (i.e. we're about to remove or fault the device). | |
3493 | * Otherwise, we keep accessible but invalid devices open forever. | |
3494 | * We don't call vdev_close() itself, because that implies some extra | |
3495 | * checks (offline, etc) that we don't want here. This is limited to | |
3496 | * leaf devices, because otherwise closing the device will affect other | |
3497 | * children. | |
34dc7c2f | 3498 | */ |
428870ff BB |
3499 | if (!vd->vdev_delayed_close && vdev_is_dead(vd) && |
3500 | vd->vdev_ops->vdev_op_leaf) | |
34dc7c2f BB |
3501 | vd->vdev_ops->vdev_op_close(vd); |
3502 | ||
3503 | if (vd->vdev_removed && | |
3504 | state == VDEV_STATE_CANT_OPEN && | |
3505 | (aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) { | |
3506 | /* | |
3507 | * If the previous state is set to VDEV_STATE_REMOVED, then this | |
3508 | * device was previously marked removed and someone attempted to | |
3509 | * reopen it. If this failed due to a nonexistent device, then | |
3510 | * keep the device in the REMOVED state. We also let this be if | |
3511 | * it is one of our special test online cases, which is only | |
3512 | * attempting to online the device and shouldn't generate an FMA | |
3513 | * fault. | |
3514 | */ | |
3515 | vd->vdev_state = VDEV_STATE_REMOVED; | |
3516 | vd->vdev_stat.vs_aux = VDEV_AUX_NONE; | |
3517 | } else if (state == VDEV_STATE_REMOVED) { | |
34dc7c2f BB |
3518 | vd->vdev_removed = B_TRUE; |
3519 | } else if (state == VDEV_STATE_CANT_OPEN) { | |
3520 | /* | |
572e2857 BB |
3521 | * If we fail to open a vdev during an import or recovery, we |
3522 | * mark it as "not available", which signifies that it was | |
3523 | * never there to begin with. Failure to open such a device | |
3524 | * is not considered an error. | |
34dc7c2f | 3525 | */ |
572e2857 BB |
3526 | if ((spa_load_state(spa) == SPA_LOAD_IMPORT || |
3527 | spa_load_state(spa) == SPA_LOAD_RECOVER) && | |
34dc7c2f BB |
3528 | vd->vdev_ops->vdev_op_leaf) |
3529 | vd->vdev_not_present = 1; | |
3530 | ||
3531 | /* | |
3532 | * Post the appropriate ereport. If the 'prevstate' field is | |
3533 | * set to something other than VDEV_STATE_UNKNOWN, it indicates | |
3534 | * that this is part of a vdev_reopen(). In this case, we don't | |
3535 | * want to post the ereport if the device was already in the | |
3536 | * CANT_OPEN state beforehand. | |
3537 | * | |
3538 | * If the 'checkremove' flag is set, then this is an attempt to | |
3539 | * online the device in response to an insertion event. If we | |
3540 | * hit this case, then we have detected an insertion event for a | |
3541 | * faulted or offline device that wasn't in the removed state. | |
3542 | * In this scenario, we don't post an ereport because we are | |
3543 | * about to replace the device, or attempt an online with | |
3544 | * vdev_forcefault, which will generate the fault for us. | |
3545 | */ | |
3546 | if ((vd->vdev_prevstate != state || vd->vdev_forcefault) && | |
3547 | !vd->vdev_not_present && !vd->vdev_checkremove && | |
b128c09f | 3548 | vd != spa->spa_root_vdev) { |
34dc7c2f BB |
3549 | const char *class; |
3550 | ||
3551 | switch (aux) { | |
3552 | case VDEV_AUX_OPEN_FAILED: | |
3553 | class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED; | |
3554 | break; | |
3555 | case VDEV_AUX_CORRUPT_DATA: | |
3556 | class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA; | |
3557 | break; | |
3558 | case VDEV_AUX_NO_REPLICAS: | |
3559 | class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS; | |
3560 | break; | |
3561 | case VDEV_AUX_BAD_GUID_SUM: | |
3562 | class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM; | |
3563 | break; | |
3564 | case VDEV_AUX_TOO_SMALL: | |
3565 | class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL; | |
3566 | break; | |
3567 | case VDEV_AUX_BAD_LABEL: | |
3568 | class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL; | |
3569 | break; | |
ff61d1a4 | 3570 | case VDEV_AUX_BAD_ASHIFT: |
3571 | class = FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT; | |
3572 | break; | |
34dc7c2f BB |
3573 | default: |
3574 | class = FM_EREPORT_ZFS_DEVICE_UNKNOWN; | |
3575 | } | |
3576 | ||
b5256303 TC |
3577 | zfs_ereport_post(class, spa, vd, NULL, NULL, |
3578 | save_state, 0); | |
34dc7c2f BB |
3579 | } |
3580 | ||
3581 | /* Erase any notion of persistent removed state */ | |
3582 | vd->vdev_removed = B_FALSE; | |
3583 | } else { | |
3584 | vd->vdev_removed = B_FALSE; | |
3585 | } | |
3586 | ||
d02ca379 DB |
3587 | /* |
3588 | * Notify ZED of any significant state-change on a leaf vdev. | |
3589 | * | |
d02ca379 | 3590 | */ |
6078881a TH |
3591 | if (vd->vdev_ops->vdev_op_leaf) { |
3592 | /* preserve original state from a vdev_reopen() */ | |
3593 | if ((vd->vdev_prevstate != VDEV_STATE_UNKNOWN) && | |
3594 | (vd->vdev_prevstate != vd->vdev_state) && | |
3595 | (save_state <= VDEV_STATE_CLOSED)) | |
3596 | save_state = vd->vdev_prevstate; | |
3597 | ||
3598 | /* filter out state change due to initial vdev_open */ | |
3599 | if (save_state > VDEV_STATE_CLOSED) | |
3600 | zfs_post_state_change(spa, vd, save_state); | |
d02ca379 DB |
3601 | } |
3602 | ||
9babb374 BB |
3603 | if (!isopen && vd->vdev_parent) |
3604 | vdev_propagate_state(vd->vdev_parent); | |
34dc7c2f | 3605 | } |
b128c09f BB |
3606 | |
3607 | /* | |
3608 | * Check the vdev configuration to ensure that it's capable of supporting | |
e550644f | 3609 | * a root pool. We do not support partial configuration. |
b128c09f BB |
3610 | */ |
3611 | boolean_t | |
3612 | vdev_is_bootable(vdev_t *vd) | |
3613 | { | |
b128c09f | 3614 | if (!vd->vdev_ops->vdev_op_leaf) { |
e550644f | 3615 | const char *vdev_type = vd->vdev_ops->vdev_op_type; |
b128c09f | 3616 | |
e550644f | 3617 | if (strcmp(vdev_type, VDEV_TYPE_MISSING) == 0) |
b128c09f | 3618 | return (B_FALSE); |
b128c09f BB |
3619 | } |
3620 | ||
e550644f | 3621 | for (int c = 0; c < vd->vdev_children; c++) { |
b128c09f BB |
3622 | if (!vdev_is_bootable(vd->vdev_child[c])) |
3623 | return (B_FALSE); | |
3624 | } | |
3625 | return (B_TRUE); | |
3626 | } | |
9babb374 | 3627 | |
428870ff BB |
3628 | /* |
3629 | * Load the state from the original vdev tree (ovd) which | |
3630 | * we've retrieved from the MOS config object. If the original | |
572e2857 BB |
3631 | * vdev was offline or faulted then we transfer that state to the |
3632 | * device in the current vdev tree (nvd). | |
428870ff | 3633 | */ |
9babb374 | 3634 | void |
428870ff | 3635 | vdev_load_log_state(vdev_t *nvd, vdev_t *ovd) |
9babb374 | 3636 | { |
572e2857 | 3637 | ASSERT(nvd->vdev_top->vdev_islog); |
1fde1e37 BB |
3638 | ASSERT(spa_config_held(nvd->vdev_spa, |
3639 | SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); | |
428870ff | 3640 | ASSERT3U(nvd->vdev_guid, ==, ovd->vdev_guid); |
9babb374 | 3641 | |
1c27024e | 3642 | for (int c = 0; c < nvd->vdev_children; c++) |
428870ff | 3643 | vdev_load_log_state(nvd->vdev_child[c], ovd->vdev_child[c]); |
9babb374 | 3644 | |
572e2857 | 3645 | if (nvd->vdev_ops->vdev_op_leaf) { |
9babb374 | 3646 | /* |
572e2857 | 3647 | * Restore the persistent vdev state |
9babb374 | 3648 | */ |
428870ff | 3649 | nvd->vdev_offline = ovd->vdev_offline; |
572e2857 BB |
3650 | nvd->vdev_faulted = ovd->vdev_faulted; |
3651 | nvd->vdev_degraded = ovd->vdev_degraded; | |
3652 | nvd->vdev_removed = ovd->vdev_removed; | |
9babb374 BB |
3653 | } |
3654 | } | |
3655 | ||
572e2857 BB |
3656 | /* |
3657 | * Determine if a log device has valid content. If the vdev was | |
3658 | * removed or faulted in the MOS config then we know that | |
3659 | * the content on the log device has already been written to the pool. | |
3660 | */ | |
3661 | boolean_t | |
3662 | vdev_log_state_valid(vdev_t *vd) | |
3663 | { | |
3664 | if (vd->vdev_ops->vdev_op_leaf && !vd->vdev_faulted && | |
3665 | !vd->vdev_removed) | |
3666 | return (B_TRUE); | |
3667 | ||
1c27024e | 3668 | for (int c = 0; c < vd->vdev_children; c++) |
572e2857 BB |
3669 | if (vdev_log_state_valid(vd->vdev_child[c])) |
3670 | return (B_TRUE); | |
3671 | ||
3672 | return (B_FALSE); | |
3673 | } | |
3674 | ||
9babb374 BB |
3675 | /* |
3676 | * Expand a vdev if possible. | |
3677 | */ | |
3678 | void | |
3679 | vdev_expand(vdev_t *vd, uint64_t txg) | |
3680 | { | |
3681 | ASSERT(vd->vdev_top == vd); | |
3682 | ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); | |
3683 | ||
3684 | if ((vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count) { | |
3685 | VERIFY(vdev_metaslab_init(vd, txg) == 0); | |
3686 | vdev_config_dirty(vd); | |
3687 | } | |
3688 | } | |
428870ff BB |
3689 | |
3690 | /* | |
3691 | * Split a vdev. | |
3692 | */ | |
3693 | void | |
3694 | vdev_split(vdev_t *vd) | |
3695 | { | |
3696 | vdev_t *cvd, *pvd = vd->vdev_parent; | |
3697 | ||
3698 | vdev_remove_child(pvd, vd); | |
3699 | vdev_compact_children(pvd); | |
3700 | ||
3701 | cvd = pvd->vdev_child[0]; | |
3702 | if (pvd->vdev_children == 1) { | |
3703 | vdev_remove_parent(cvd); | |
3704 | cvd->vdev_splitting = B_TRUE; | |
3705 | } | |
3706 | vdev_propagate_state(cvd); | |
3707 | } | |
c28b2279 | 3708 | |
cc92e9d0 | 3709 | void |
8fb1ede1 | 3710 | vdev_deadman(vdev_t *vd, char *tag) |
cc92e9d0 | 3711 | { |
1c27024e | 3712 | for (int c = 0; c < vd->vdev_children; c++) { |
cc92e9d0 GW |
3713 | vdev_t *cvd = vd->vdev_child[c]; |
3714 | ||
8fb1ede1 | 3715 | vdev_deadman(cvd, tag); |
cc92e9d0 GW |
3716 | } |
3717 | ||
3718 | if (vd->vdev_ops->vdev_op_leaf) { | |
3719 | vdev_queue_t *vq = &vd->vdev_queue; | |
3720 | ||
3721 | mutex_enter(&vq->vq_lock); | |
e8b96c60 | 3722 | if (avl_numnodes(&vq->vq_active_tree) > 0) { |
cc92e9d0 GW |
3723 | spa_t *spa = vd->vdev_spa; |
3724 | zio_t *fio; | |
3725 | uint64_t delta; | |
3726 | ||
8fb1ede1 BB |
3727 | zfs_dbgmsg("slow vdev: %s has %d active IOs", |
3728 | vd->vdev_path, avl_numnodes(&vq->vq_active_tree)); | |
3729 | ||
cc92e9d0 GW |
3730 | /* |
3731 | * Look at the head of all the pending queues, | |
3732 | * if any I/O has been outstanding for longer than | |
8fb1ede1 | 3733 | * the spa_deadman_synctime invoke the deadman logic. |
cc92e9d0 | 3734 | */ |
e8b96c60 | 3735 | fio = avl_first(&vq->vq_active_tree); |
cb682a17 | 3736 | delta = gethrtime() - fio->io_timestamp; |
8fb1ede1 BB |
3737 | if (delta > spa_deadman_synctime(spa)) |
3738 | zio_deadman(fio, tag); | |
cc92e9d0 GW |
3739 | } |
3740 | mutex_exit(&vq->vq_lock); | |
3741 | } | |
3742 | } | |
3743 | ||
c28b2279 BB |
3744 | #if defined(_KERNEL) && defined(HAVE_SPL) |
3745 | EXPORT_SYMBOL(vdev_fault); | |
3746 | EXPORT_SYMBOL(vdev_degrade); | |
3747 | EXPORT_SYMBOL(vdev_online); | |
3748 | EXPORT_SYMBOL(vdev_offline); | |
3749 | EXPORT_SYMBOL(vdev_clear); | |
4ea3f864 | 3750 | /* BEGIN CSTYLED */ |
b8bcca18 MA |
3751 | module_param(metaslabs_per_vdev, int, 0644); |
3752 | MODULE_PARM_DESC(metaslabs_per_vdev, | |
3753 | "Divide added vdev into approximately (but no more than) this number " | |
3754 | "of metaslabs"); | |
4ea3f864 | 3755 | /* END CSTYLED */ |
c28b2279 | 3756 | #endif |