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2f0c9fe6 PB |
1 | /* |
2 | * QEMU System Emulator block driver | |
3 | * | |
4 | * Copyright (c) 2011 IBM Corp. | |
5 | * Copyright (c) 2012 Red Hat, Inc. | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
d38ea87a | 26 | #include "qemu/osdep.h" |
e2c1c34f | 27 | #include "block/aio-wait.h" |
737e150e | 28 | #include "block/block.h" |
c87621ea | 29 | #include "block/blockjob_int.h" |
737e150e | 30 | #include "block/block_int.h" |
c9de4050 | 31 | #include "block/trace.h" |
373340b2 | 32 | #include "sysemu/block-backend.h" |
e688df6b | 33 | #include "qapi/error.h" |
9af23989 | 34 | #include "qapi/qapi-events-block-core.h" |
cc7a8ea7 | 35 | #include "qapi/qmp/qerror.h" |
db725815 | 36 | #include "qemu/main-loop.h" |
1de7afc9 | 37 | #include "qemu/timer.h" |
2f0c9fe6 | 38 | |
e7c1d78b | 39 | static bool is_block_job(Job *job) |
a7112795 | 40 | { |
e7c1d78b KW |
41 | return job_type(job) == JOB_TYPE_BACKUP || |
42 | job_type(job) == JOB_TYPE_COMMIT || | |
43 | job_type(job) == JOB_TYPE_MIRROR || | |
44 | job_type(job) == JOB_TYPE_STREAM; | |
45 | } | |
46 | ||
f41ab73f | 47 | BlockJob *block_job_next_locked(BlockJob *bjob) |
e7c1d78b KW |
48 | { |
49 | Job *job = bjob ? &bjob->job : NULL; | |
cf81ae28 | 50 | GLOBAL_STATE_CODE(); |
e7c1d78b KW |
51 | |
52 | do { | |
f41ab73f | 53 | job = job_next_locked(job); |
e7c1d78b KW |
54 | } while (job && !is_block_job(job)); |
55 | ||
56 | return job ? container_of(job, BlockJob, job) : NULL; | |
a7112795 AG |
57 | } |
58 | ||
f41ab73f EGE |
59 | BlockJob *block_job_get_locked(const char *id) |
60 | { | |
61 | Job *job = job_get_locked(id); | |
cf81ae28 | 62 | GLOBAL_STATE_CODE(); |
ffb1f10c | 63 | |
e7c1d78b KW |
64 | if (job && is_block_job(job)) { |
65 | return container_of(job, BlockJob, job); | |
66 | } else { | |
67 | return NULL; | |
ffb1f10c | 68 | } |
ffb1f10c AG |
69 | } |
70 | ||
f41ab73f EGE |
71 | BlockJob *block_job_get(const char *id) |
72 | { | |
73 | JOB_LOCK_GUARD(); | |
74 | return block_job_get_locked(id); | |
75 | } | |
76 | ||
80fa2c75 | 77 | void block_job_free(Job *job) |
05b0d8e3 | 78 | { |
80fa2c75 | 79 | BlockJob *bjob = container_of(job, BlockJob, job); |
e2d9faf5 | 80 | GLOBAL_STATE_CODE(); |
80fa2c75 | 81 | |
80fa2c75 | 82 | block_job_remove_all_bdrv(bjob); |
4951967d | 83 | ratelimit_destroy(&bjob->limit); |
80fa2c75 | 84 | error_free(bjob->blocker); |
05b0d8e3 PB |
85 | } |
86 | ||
f321dcb5 PB |
87 | static char *child_job_get_parent_desc(BdrvChild *c) |
88 | { | |
89 | BlockJob *job = c->opaque; | |
252291ea | 90 | return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); |
f321dcb5 PB |
91 | } |
92 | ||
ad90feba | 93 | static void child_job_drained_begin(BdrvChild *c) |
f321dcb5 | 94 | { |
ad90feba | 95 | BlockJob *job = c->opaque; |
b15de828 | 96 | job_pause(&job->job); |
f321dcb5 PB |
97 | } |
98 | ||
89bd0305 KW |
99 | static bool child_job_drained_poll(BdrvChild *c) |
100 | { | |
101 | BlockJob *bjob = c->opaque; | |
102 | Job *job = &bjob->job; | |
103 | const BlockJobDriver *drv = block_job_driver(bjob); | |
104 | ||
105 | /* An inactive or completed job doesn't have any pending requests. Jobs | |
106 | * with !job->busy are either already paused or have a pause point after | |
107 | * being reentered, so no job driver code will run before they pause. */ | |
880eeec6 EGE |
108 | WITH_JOB_LOCK_GUARD() { |
109 | if (!job->busy || job_is_completed_locked(job)) { | |
110 | return false; | |
111 | } | |
89bd0305 KW |
112 | } |
113 | ||
114 | /* Otherwise, assume that it isn't fully stopped yet, but allow the job to | |
115 | * override this assumption. */ | |
116 | if (drv->drained_poll) { | |
117 | return drv->drained_poll(bjob); | |
118 | } else { | |
119 | return true; | |
120 | } | |
121 | } | |
122 | ||
2f65df6e | 123 | static void child_job_drained_end(BdrvChild *c) |
f321dcb5 | 124 | { |
ad90feba | 125 | BlockJob *job = c->opaque; |
b15de828 | 126 | job_resume(&job->job); |
f321dcb5 PB |
127 | } |
128 | ||
3428b100 EGE |
129 | typedef struct BdrvStateChildJobContext { |
130 | AioContext *new_ctx; | |
131 | BlockJob *job; | |
132 | } BdrvStateChildJobContext; | |
133 | ||
134 | static void child_job_set_aio_ctx_commit(void *opaque) | |
135 | { | |
136 | BdrvStateChildJobContext *s = opaque; | |
137 | BlockJob *job = s->job; | |
138 | ||
139 | job_set_aio_context(&job->job, s->new_ctx); | |
140 | } | |
141 | ||
142 | static TransactionActionDrv change_child_job_context = { | |
143 | .commit = child_job_set_aio_ctx_commit, | |
144 | .clean = g_free, | |
145 | }; | |
146 | ||
147 | static bool child_job_change_aio_ctx(BdrvChild *c, AioContext *ctx, | |
148 | GHashTable *visited, Transaction *tran, | |
149 | Error **errp) | |
150 | { | |
151 | BlockJob *job = c->opaque; | |
152 | BdrvStateChildJobContext *s; | |
153 | GSList *l; | |
154 | ||
155 | for (l = job->nodes; l; l = l->next) { | |
156 | BdrvChild *sibling = l->data; | |
157 | if (!bdrv_child_change_aio_context(sibling, ctx, visited, | |
158 | tran, errp)) { | |
159 | return false; | |
160 | } | |
161 | } | |
162 | ||
163 | s = g_new(BdrvStateChildJobContext, 1); | |
164 | *s = (BdrvStateChildJobContext) { | |
165 | .new_ctx = ctx, | |
166 | .job = job, | |
167 | }; | |
168 | ||
169 | tran_add(tran, &change_child_job_context, s); | |
170 | return true; | |
171 | } | |
172 | ||
3ca1f322 VSO |
173 | static AioContext *child_job_get_parent_aio_context(BdrvChild *c) |
174 | { | |
175 | BlockJob *job = c->opaque; | |
d5f8d79c HR |
176 | IO_CODE(); |
177 | JOB_LOCK_GUARD(); | |
3ca1f322 VSO |
178 | |
179 | return job->job.aio_context; | |
180 | } | |
181 | ||
bd86fb99 | 182 | static const BdrvChildClass child_job = { |
ad90feba KW |
183 | .get_parent_desc = child_job_get_parent_desc, |
184 | .drained_begin = child_job_drained_begin, | |
89bd0305 | 185 | .drained_poll = child_job_drained_poll, |
ad90feba | 186 | .drained_end = child_job_drained_end, |
3428b100 | 187 | .change_aio_ctx = child_job_change_aio_ctx, |
ad90feba | 188 | .stay_at_node = true, |
3ca1f322 | 189 | .get_parent_aio_context = child_job_get_parent_aio_context, |
f321dcb5 PB |
190 | }; |
191 | ||
bbc02b90 KW |
192 | void block_job_remove_all_bdrv(BlockJob *job) |
193 | { | |
cf81ae28 | 194 | GLOBAL_STATE_CODE(); |
d876bf67 SL |
195 | /* |
196 | * bdrv_root_unref_child() may reach child_job_[can_]set_aio_ctx(), | |
197 | * which will also traverse job->nodes, so consume the list one by | |
198 | * one to make sure that such a concurrent access does not attempt | |
199 | * to process an already freed BdrvChild. | |
200 | */ | |
201 | while (job->nodes) { | |
202 | GSList *l = job->nodes; | |
bbc02b90 | 203 | BdrvChild *c = l->data; |
d876bf67 SL |
204 | |
205 | job->nodes = l->next; | |
206 | ||
bbc02b90 KW |
207 | bdrv_op_unblock_all(c->bs, job->blocker); |
208 | bdrv_root_unref_child(c); | |
d876bf67 SL |
209 | |
210 | g_slist_free_1(l); | |
bbc02b90 | 211 | } |
bbc02b90 KW |
212 | } |
213 | ||
8164102f VSO |
214 | bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) |
215 | { | |
216 | GSList *el; | |
cf81ae28 | 217 | GLOBAL_STATE_CODE(); |
8164102f VSO |
218 | |
219 | for (el = job->nodes; el; el = el->next) { | |
220 | BdrvChild *c = el->data; | |
221 | if (c->bs == bs) { | |
222 | return true; | |
223 | } | |
224 | } | |
225 | ||
226 | return false; | |
227 | } | |
228 | ||
76d554e2 KW |
229 | int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, |
230 | uint64_t perm, uint64_t shared_perm, Error **errp) | |
23d402d4 | 231 | { |
76d554e2 | 232 | BdrvChild *c; |
076d467a | 233 | bool need_context_ops; |
cf81ae28 | 234 | GLOBAL_STATE_CODE(); |
76d554e2 | 235 | |
b441dc71 | 236 | bdrv_ref(bs); |
076d467a MQ |
237 | |
238 | need_context_ops = bdrv_get_aio_context(bs) != job->job.aio_context; | |
239 | ||
240 | if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { | |
132ada80 KW |
241 | aio_context_release(job->job.aio_context); |
242 | } | |
228ca37e | 243 | c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job, |
258b7765 | 244 | errp); |
076d467a | 245 | if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { |
132ada80 KW |
246 | aio_context_acquire(job->job.aio_context); |
247 | } | |
76d554e2 KW |
248 | if (c == NULL) { |
249 | return -EPERM; | |
250 | } | |
251 | ||
252 | job->nodes = g_slist_prepend(job->nodes, c); | |
23d402d4 | 253 | bdrv_op_block_all(bs, job->blocker); |
76d554e2 KW |
254 | |
255 | return 0; | |
23d402d4 AG |
256 | } |
257 | ||
243c6ec7 EGE |
258 | /* Called with job_mutex lock held. */ |
259 | static void block_job_on_idle_locked(Notifier *n, void *opaque) | |
34dc97b9 | 260 | { |
cfe29d82 | 261 | aio_wait_kick(); |
34dc97b9 KW |
262 | } |
263 | ||
559b935f JS |
264 | bool block_job_is_internal(BlockJob *job) |
265 | { | |
33e9e9bd | 266 | return (job->job.id == NULL); |
559b935f JS |
267 | } |
268 | ||
bd21935b KW |
269 | const BlockJobDriver *block_job_driver(BlockJob *job) |
270 | { | |
9f6bb4c0 | 271 | return container_of(job->job.driver, BlockJobDriver, job_driver); |
bd21935b KW |
272 | } |
273 | ||
da01ff7f KW |
274 | /* Assumes the job_mutex is held */ |
275 | static bool job_timer_pending(Job *job) | |
276 | { | |
277 | return timer_pending(&job->sleep_timer); | |
278 | } | |
279 | ||
f41ab73f | 280 | bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp) |
2f0c9fe6 | 281 | { |
e0323a04 | 282 | const BlockJobDriver *drv = block_job_driver(job); |
aa9ef2e6 | 283 | int64_t old_speed = job->speed; |
2f0c9fe6 | 284 | |
cf81ae28 EGE |
285 | GLOBAL_STATE_CODE(); |
286 | ||
f41ab73f | 287 | if (job_apply_verb_locked(&job->job, JOB_VERB_SET_SPEED, errp) < 0) { |
775d0c05 | 288 | return false; |
0ec4dfb8 | 289 | } |
18bb6928 | 290 | if (speed < 0) { |
1ef7d9d3 KW |
291 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed", |
292 | "a non-negative value"); | |
775d0c05 | 293 | return false; |
2f0c9fe6 PB |
294 | } |
295 | ||
18bb6928 KW |
296 | ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); |
297 | ||
2f0c9fe6 | 298 | job->speed = speed; |
e0323a04 VSO |
299 | |
300 | if (drv->set_speed) { | |
f41ab73f | 301 | job_unlock(); |
e0323a04 | 302 | drv->set_speed(job, speed); |
f41ab73f | 303 | job_lock(); |
e0323a04 VSO |
304 | } |
305 | ||
d4fce188 | 306 | if (speed && speed <= old_speed) { |
775d0c05 | 307 | return true; |
aa9ef2e6 JS |
308 | } |
309 | ||
310 | /* kick only if a timer is pending */ | |
f41ab73f | 311 | job_enter_cond_locked(&job->job, job_timer_pending); |
775d0c05 VSO |
312 | |
313 | return true; | |
2f0c9fe6 PB |
314 | } |
315 | ||
ba6a9100 | 316 | static bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) |
f41ab73f EGE |
317 | { |
318 | JOB_LOCK_GUARD(); | |
319 | return block_job_set_speed_locked(job, speed, errp); | |
320 | } | |
321 | ||
dee81d51 KW |
322 | int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) |
323 | { | |
e2d9faf5 | 324 | IO_CODE(); |
dee81d51 KW |
325 | return ratelimit_calculate_delay(&job->limit, n); |
326 | } | |
327 | ||
f41ab73f | 328 | BlockJobInfo *block_job_query_locked(BlockJob *job, Error **errp) |
30e628b7 | 329 | { |
559b935f | 330 | BlockJobInfo *info; |
a7b4f8fc | 331 | uint64_t progress_current, progress_total; |
559b935f | 332 | |
cf81ae28 EGE |
333 | GLOBAL_STATE_CODE(); |
334 | ||
559b935f JS |
335 | if (block_job_is_internal(job)) { |
336 | error_setg(errp, "Cannot query QEMU internal jobs"); | |
337 | return NULL; | |
338 | } | |
a7b4f8fc EGE |
339 | |
340 | progress_get_snapshot(&job->job.progress, &progress_current, | |
341 | &progress_total); | |
342 | ||
559b935f | 343 | info = g_new0(BlockJobInfo, 1); |
252291ea | 344 | info->type = g_strdup(job_type_str(&job->job)); |
33e9e9bd | 345 | info->device = g_strdup(job->job.id); |
fca26318 | 346 | info->busy = job->job.busy; |
da01ff7f | 347 | info->paused = job->job.pause_count > 0; |
a7b4f8fc EGE |
348 | info->offset = progress_current; |
349 | info->len = progress_total; | |
32c81a4a PB |
350 | info->speed = job->speed; |
351 | info->io_status = job->iostatus; | |
f41ab73f | 352 | info->ready = job_is_ready_locked(&job->job), |
a50c2ab8 | 353 | info->status = job->job.status; |
bb02b65c KW |
354 | info->auto_finalize = job->job.auto_finalize; |
355 | info->auto_dismiss = job->job.auto_dismiss; | |
3b6ad623 | 356 | if (job->job.ret) { |
3b6ad623 SG |
357 | info->error = job->job.err ? |
358 | g_strdup(error_get_pretty(job->job.err)) : | |
359 | g_strdup(strerror(-job->job.ret)); | |
360 | } | |
30e628b7 PB |
361 | return info; |
362 | } | |
32c81a4a | 363 | |
d59cb66d EGE |
364 | /* Called with job lock held */ |
365 | static void block_job_iostatus_set_err_locked(BlockJob *job, int error) | |
32c81a4a PB |
366 | { |
367 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { | |
368 | job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : | |
369 | BLOCK_DEVICE_IO_STATUS_FAILED; | |
370 | } | |
371 | } | |
372 | ||
243c6ec7 EGE |
373 | /* Called with job_mutex lock held. */ |
374 | static void block_job_event_cancelled_locked(Notifier *n, void *opaque) | |
bcada37b | 375 | { |
139a9f02 | 376 | BlockJob *job = opaque; |
a7b4f8fc | 377 | uint64_t progress_current, progress_total; |
139a9f02 | 378 | |
559b935f JS |
379 | if (block_job_is_internal(job)) { |
380 | return; | |
381 | } | |
382 | ||
a7b4f8fc EGE |
383 | progress_get_snapshot(&job->job.progress, &progress_current, |
384 | &progress_total); | |
385 | ||
252291ea | 386 | qapi_event_send_block_job_cancelled(job_type(&job->job), |
33e9e9bd | 387 | job->job.id, |
a7b4f8fc EGE |
388 | progress_total, |
389 | progress_current, | |
3ab72385 | 390 | job->speed); |
bcada37b | 391 | } |
32c81a4a | 392 | |
243c6ec7 EGE |
393 | /* Called with job_mutex lock held. */ |
394 | static void block_job_event_completed_locked(Notifier *n, void *opaque) | |
a66a2a36 | 395 | { |
139a9f02 KW |
396 | BlockJob *job = opaque; |
397 | const char *msg = NULL; | |
a7b4f8fc | 398 | uint64_t progress_current, progress_total; |
139a9f02 | 399 | |
559b935f JS |
400 | if (block_job_is_internal(job)) { |
401 | return; | |
402 | } | |
403 | ||
4ad35181 | 404 | if (job->job.ret < 0) { |
3b6ad623 | 405 | msg = error_get_pretty(job->job.err); |
139a9f02 KW |
406 | } |
407 | ||
a7b4f8fc EGE |
408 | progress_get_snapshot(&job->job.progress, &progress_current, |
409 | &progress_total); | |
410 | ||
252291ea | 411 | qapi_event_send_block_job_completed(job_type(&job->job), |
33e9e9bd | 412 | job->job.id, |
a7b4f8fc EGE |
413 | progress_total, |
414 | progress_current, | |
bcada37b | 415 | job->speed, |
3ab72385 | 416 | msg); |
a66a2a36 PB |
417 | } |
418 | ||
243c6ec7 EGE |
419 | /* Called with job_mutex lock held. */ |
420 | static void block_job_event_pending_locked(Notifier *n, void *opaque) | |
5f241594 | 421 | { |
139a9f02 KW |
422 | BlockJob *job = opaque; |
423 | ||
5d4f3769 KW |
424 | if (block_job_is_internal(job)) { |
425 | return; | |
5f241594 | 426 | } |
5d4f3769 KW |
427 | |
428 | qapi_event_send_block_job_pending(job_type(&job->job), | |
3ab72385 | 429 | job->job.id); |
5f241594 JS |
430 | } |
431 | ||
243c6ec7 EGE |
432 | /* Called with job_mutex lock held. */ |
433 | static void block_job_event_ready_locked(Notifier *n, void *opaque) | |
2e1795b5 KW |
434 | { |
435 | BlockJob *job = opaque; | |
a7b4f8fc | 436 | uint64_t progress_current, progress_total; |
2e1795b5 KW |
437 | |
438 | if (block_job_is_internal(job)) { | |
439 | return; | |
440 | } | |
441 | ||
a7b4f8fc EGE |
442 | progress_get_snapshot(&job->job.progress, &progress_current, |
443 | &progress_total); | |
444 | ||
2e1795b5 KW |
445 | qapi_event_send_block_job_ready(job_type(&job->job), |
446 | job->job.id, | |
a7b4f8fc EGE |
447 | progress_total, |
448 | progress_current, | |
3ab72385 | 449 | job->speed); |
2e1795b5 KW |
450 | } |
451 | ||
452 | ||
88691b37 | 453 | void *block_job_create(const char *job_id, const BlockJobDriver *driver, |
62c9e416 | 454 | JobTxn *txn, BlockDriverState *bs, uint64_t perm, |
88691b37 PB |
455 | uint64_t shared_perm, int64_t speed, int flags, |
456 | BlockCompletionFunc *cb, void *opaque, Error **errp) | |
457 | { | |
88691b37 | 458 | BlockJob *job; |
985cac8f | 459 | int ret; |
e2d9faf5 | 460 | GLOBAL_STATE_CODE(); |
88691b37 | 461 | |
bb02b65c | 462 | if (job_id == NULL && !(flags & JOB_INTERNAL)) { |
88691b37 | 463 | job_id = bdrv_get_device_name(bs); |
88691b37 PB |
464 | } |
465 | ||
985cac8f | 466 | job = job_create(job_id, &driver->job_driver, txn, bdrv_get_aio_context(bs), |
4ad35181 | 467 | flags, cb, opaque, errp); |
33e9e9bd | 468 | if (job == NULL) { |
33e9e9bd KW |
469 | return NULL; |
470 | } | |
471 | ||
e7c1d78b | 472 | assert(is_block_job(&job->job)); |
80fa2c75 | 473 | assert(job->job.driver->free == &block_job_free); |
b15de828 | 474 | assert(job->job.driver->user_resume == &block_job_user_resume); |
e7c1d78b | 475 | |
4951967d PB |
476 | ratelimit_init(&job->limit); |
477 | ||
243c6ec7 EGE |
478 | job->finalize_cancelled_notifier.notify = block_job_event_cancelled_locked; |
479 | job->finalize_completed_notifier.notify = block_job_event_completed_locked; | |
480 | job->pending_notifier.notify = block_job_event_pending_locked; | |
481 | job->ready_notifier.notify = block_job_event_ready_locked; | |
482 | job->idle_notifier.notify = block_job_on_idle_locked; | |
139a9f02 | 483 | |
880eeec6 EGE |
484 | WITH_JOB_LOCK_GUARD() { |
485 | notifier_list_add(&job->job.on_finalize_cancelled, | |
486 | &job->finalize_cancelled_notifier); | |
487 | notifier_list_add(&job->job.on_finalize_completed, | |
488 | &job->finalize_completed_notifier); | |
489 | notifier_list_add(&job->job.on_pending, &job->pending_notifier); | |
490 | notifier_list_add(&job->job.on_ready, &job->ready_notifier); | |
491 | notifier_list_add(&job->job.on_idle, &job->idle_notifier); | |
492 | } | |
139a9f02 | 493 | |
88691b37 | 494 | error_setg(&job->blocker, "block device is in use by block job: %s", |
252291ea | 495 | job_type_str(&job->job)); |
88691b37 | 496 | |
985cac8f VSO |
497 | ret = block_job_add_bdrv(job, "main node", bs, perm, shared_perm, errp); |
498 | if (ret < 0) { | |
499 | goto fail; | |
500 | } | |
88691b37 | 501 | |
985cac8f | 502 | bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); |
88691b37 | 503 | |
c02b83ed | 504 | if (!block_job_set_speed(job, speed, errp)) { |
985cac8f | 505 | goto fail; |
88691b37 | 506 | } |
75859b94 | 507 | |
88691b37 | 508 | return job; |
985cac8f VSO |
509 | |
510 | fail: | |
511 | job_early_fail(&job->job); | |
512 | return NULL; | |
88691b37 PB |
513 | } |
514 | ||
f41ab73f | 515 | void block_job_iostatus_reset_locked(BlockJob *job) |
2caf63a9 | 516 | { |
cf81ae28 | 517 | GLOBAL_STATE_CODE(); |
4c241cf5 PB |
518 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { |
519 | return; | |
520 | } | |
b15de828 | 521 | assert(job->job.user_paused && job->job.pause_count > 0); |
2caf63a9 PB |
522 | job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; |
523 | } | |
524 | ||
ba6a9100 | 525 | static void block_job_iostatus_reset(BlockJob *job) |
f41ab73f EGE |
526 | { |
527 | JOB_LOCK_GUARD(); | |
528 | block_job_iostatus_reset_locked(job); | |
529 | } | |
530 | ||
b15de828 KW |
531 | void block_job_user_resume(Job *job) |
532 | { | |
533 | BlockJob *bjob = container_of(job, BlockJob, job); | |
e2d9faf5 | 534 | GLOBAL_STATE_CODE(); |
b15de828 KW |
535 | block_job_iostatus_reset(bjob); |
536 | } | |
537 | ||
81e254dc | 538 | BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, |
32c81a4a PB |
539 | int is_read, int error) |
540 | { | |
541 | BlockErrorAction action; | |
e2d9faf5 | 542 | IO_CODE(); |
32c81a4a PB |
543 | |
544 | switch (on_err) { | |
545 | case BLOCKDEV_ON_ERROR_ENOSPC: | |
8c398252 | 546 | case BLOCKDEV_ON_ERROR_AUTO: |
a589569f WX |
547 | action = (error == ENOSPC) ? |
548 | BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; | |
32c81a4a PB |
549 | break; |
550 | case BLOCKDEV_ON_ERROR_STOP: | |
a589569f | 551 | action = BLOCK_ERROR_ACTION_STOP; |
32c81a4a PB |
552 | break; |
553 | case BLOCKDEV_ON_ERROR_REPORT: | |
a589569f | 554 | action = BLOCK_ERROR_ACTION_REPORT; |
32c81a4a PB |
555 | break; |
556 | case BLOCKDEV_ON_ERROR_IGNORE: | |
a589569f | 557 | action = BLOCK_ERROR_ACTION_IGNORE; |
32c81a4a PB |
558 | break; |
559 | default: | |
560 | abort(); | |
561 | } | |
559b935f | 562 | if (!block_job_is_internal(job)) { |
33e9e9bd | 563 | qapi_event_send_block_job_error(job->job.id, |
559b935f JS |
564 | is_read ? IO_OPERATION_TYPE_READ : |
565 | IO_OPERATION_TYPE_WRITE, | |
3ab72385 | 566 | action); |
559b935f | 567 | } |
a589569f | 568 | if (action == BLOCK_ERROR_ACTION_STOP) { |
880eeec6 EGE |
569 | WITH_JOB_LOCK_GUARD() { |
570 | if (!job->job.user_paused) { | |
571 | job_pause_locked(&job->job); | |
572 | /* | |
573 | * make the pause user visible, which will be | |
574 | * resumed from QMP. | |
575 | */ | |
576 | job->job.user_paused = true; | |
577 | } | |
d59cb66d | 578 | block_job_iostatus_set_err_locked(job, error); |
8d9648cb | 579 | } |
32c81a4a PB |
580 | } |
581 | return action; | |
582 | } | |
df9a3165 VSO |
583 | |
584 | AioContext *block_job_get_aio_context(BlockJob *job) | |
585 | { | |
cf81ae28 | 586 | GLOBAL_STATE_CODE(); |
df9a3165 VSO |
587 | return job->job.aio_context; |
588 | } |