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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" |
737e150e | 27 | #include "block/block.h" |
c87621ea | 28 | #include "block/blockjob_int.h" |
737e150e | 29 | #include "block/block_int.h" |
c9de4050 | 30 | #include "block/trace.h" |
373340b2 | 31 | #include "sysemu/block-backend.h" |
e688df6b | 32 | #include "qapi/error.h" |
9af23989 | 33 | #include "qapi/qapi-events-block-core.h" |
cc7a8ea7 | 34 | #include "qapi/qmp/qerror.h" |
10817bf0 | 35 | #include "qemu/coroutine.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 | 59 | BlockJob *block_job_next(BlockJob *bjob) |
ffb1f10c | 60 | { |
f41ab73f EGE |
61 | JOB_LOCK_GUARD(); |
62 | return block_job_next_locked(bjob); | |
63 | } | |
64 | ||
65 | BlockJob *block_job_get_locked(const char *id) | |
66 | { | |
67 | Job *job = job_get_locked(id); | |
cf81ae28 | 68 | GLOBAL_STATE_CODE(); |
ffb1f10c | 69 | |
e7c1d78b KW |
70 | if (job && is_block_job(job)) { |
71 | return container_of(job, BlockJob, job); | |
72 | } else { | |
73 | return NULL; | |
ffb1f10c | 74 | } |
ffb1f10c AG |
75 | } |
76 | ||
f41ab73f EGE |
77 | BlockJob *block_job_get(const char *id) |
78 | { | |
79 | JOB_LOCK_GUARD(); | |
80 | return block_job_get_locked(id); | |
81 | } | |
82 | ||
80fa2c75 | 83 | void block_job_free(Job *job) |
05b0d8e3 | 84 | { |
80fa2c75 | 85 | BlockJob *bjob = container_of(job, BlockJob, job); |
e2d9faf5 | 86 | GLOBAL_STATE_CODE(); |
80fa2c75 | 87 | |
80fa2c75 | 88 | block_job_remove_all_bdrv(bjob); |
4951967d | 89 | ratelimit_destroy(&bjob->limit); |
80fa2c75 | 90 | error_free(bjob->blocker); |
05b0d8e3 PB |
91 | } |
92 | ||
f321dcb5 PB |
93 | static char *child_job_get_parent_desc(BdrvChild *c) |
94 | { | |
95 | BlockJob *job = c->opaque; | |
252291ea | 96 | return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); |
f321dcb5 PB |
97 | } |
98 | ||
ad90feba | 99 | static void child_job_drained_begin(BdrvChild *c) |
f321dcb5 | 100 | { |
ad90feba | 101 | BlockJob *job = c->opaque; |
b15de828 | 102 | job_pause(&job->job); |
f321dcb5 PB |
103 | } |
104 | ||
89bd0305 KW |
105 | static bool child_job_drained_poll(BdrvChild *c) |
106 | { | |
107 | BlockJob *bjob = c->opaque; | |
108 | Job *job = &bjob->job; | |
109 | const BlockJobDriver *drv = block_job_driver(bjob); | |
110 | ||
111 | /* An inactive or completed job doesn't have any pending requests. Jobs | |
112 | * with !job->busy are either already paused or have a pause point after | |
113 | * being reentered, so no job driver code will run before they pause. */ | |
880eeec6 EGE |
114 | WITH_JOB_LOCK_GUARD() { |
115 | if (!job->busy || job_is_completed_locked(job)) { | |
116 | return false; | |
117 | } | |
89bd0305 KW |
118 | } |
119 | ||
120 | /* Otherwise, assume that it isn't fully stopped yet, but allow the job to | |
121 | * override this assumption. */ | |
122 | if (drv->drained_poll) { | |
123 | return drv->drained_poll(bjob); | |
124 | } else { | |
125 | return true; | |
126 | } | |
127 | } | |
128 | ||
e037c09c | 129 | static void child_job_drained_end(BdrvChild *c, int *drained_end_counter) |
f321dcb5 | 130 | { |
ad90feba | 131 | BlockJob *job = c->opaque; |
b15de828 | 132 | job_resume(&job->job); |
f321dcb5 PB |
133 | } |
134 | ||
9ff7f0df KW |
135 | static bool child_job_can_set_aio_ctx(BdrvChild *c, AioContext *ctx, |
136 | GSList **ignore, Error **errp) | |
137 | { | |
138 | BlockJob *job = c->opaque; | |
139 | GSList *l; | |
140 | ||
141 | for (l = job->nodes; l; l = l->next) { | |
142 | BdrvChild *sibling = l->data; | |
143 | if (!bdrv_child_can_set_aio_context(sibling, ctx, ignore, errp)) { | |
144 | return false; | |
145 | } | |
146 | } | |
147 | return true; | |
148 | } | |
149 | ||
150 | static void child_job_set_aio_ctx(BdrvChild *c, AioContext *ctx, | |
151 | GSList **ignore) | |
152 | { | |
153 | BlockJob *job = c->opaque; | |
154 | GSList *l; | |
155 | ||
156 | for (l = job->nodes; l; l = l->next) { | |
157 | BdrvChild *sibling = l->data; | |
158 | if (g_slist_find(*ignore, sibling)) { | |
159 | continue; | |
160 | } | |
161 | *ignore = g_slist_prepend(*ignore, sibling); | |
162 | bdrv_set_aio_context_ignore(sibling->bs, ctx, ignore); | |
163 | } | |
657e1203 | 164 | |
3ed4f708 | 165 | job_set_aio_context(&job->job, ctx); |
9ff7f0df KW |
166 | } |
167 | ||
3ca1f322 VSO |
168 | static AioContext *child_job_get_parent_aio_context(BdrvChild *c) |
169 | { | |
170 | BlockJob *job = c->opaque; | |
3ed4f708 | 171 | GLOBAL_STATE_CODE(); |
3ca1f322 VSO |
172 | |
173 | return job->job.aio_context; | |
174 | } | |
175 | ||
bd86fb99 | 176 | static const BdrvChildClass child_job = { |
ad90feba KW |
177 | .get_parent_desc = child_job_get_parent_desc, |
178 | .drained_begin = child_job_drained_begin, | |
89bd0305 | 179 | .drained_poll = child_job_drained_poll, |
ad90feba | 180 | .drained_end = child_job_drained_end, |
9ff7f0df KW |
181 | .can_set_aio_ctx = child_job_can_set_aio_ctx, |
182 | .set_aio_ctx = child_job_set_aio_ctx, | |
ad90feba | 183 | .stay_at_node = true, |
3ca1f322 | 184 | .get_parent_aio_context = child_job_get_parent_aio_context, |
f321dcb5 PB |
185 | }; |
186 | ||
bbc02b90 KW |
187 | void block_job_remove_all_bdrv(BlockJob *job) |
188 | { | |
cf81ae28 | 189 | GLOBAL_STATE_CODE(); |
d876bf67 SL |
190 | /* |
191 | * bdrv_root_unref_child() may reach child_job_[can_]set_aio_ctx(), | |
192 | * which will also traverse job->nodes, so consume the list one by | |
193 | * one to make sure that such a concurrent access does not attempt | |
194 | * to process an already freed BdrvChild. | |
195 | */ | |
196 | while (job->nodes) { | |
197 | GSList *l = job->nodes; | |
bbc02b90 | 198 | BdrvChild *c = l->data; |
d876bf67 SL |
199 | |
200 | job->nodes = l->next; | |
201 | ||
bbc02b90 KW |
202 | bdrv_op_unblock_all(c->bs, job->blocker); |
203 | bdrv_root_unref_child(c); | |
d876bf67 SL |
204 | |
205 | g_slist_free_1(l); | |
bbc02b90 | 206 | } |
bbc02b90 KW |
207 | } |
208 | ||
8164102f VSO |
209 | bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) |
210 | { | |
211 | GSList *el; | |
cf81ae28 | 212 | GLOBAL_STATE_CODE(); |
8164102f VSO |
213 | |
214 | for (el = job->nodes; el; el = el->next) { | |
215 | BdrvChild *c = el->data; | |
216 | if (c->bs == bs) { | |
217 | return true; | |
218 | } | |
219 | } | |
220 | ||
221 | return false; | |
222 | } | |
223 | ||
76d554e2 KW |
224 | int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, |
225 | uint64_t perm, uint64_t shared_perm, Error **errp) | |
23d402d4 | 226 | { |
76d554e2 | 227 | BdrvChild *c; |
076d467a | 228 | bool need_context_ops; |
cf81ae28 | 229 | GLOBAL_STATE_CODE(); |
76d554e2 | 230 | |
b441dc71 | 231 | bdrv_ref(bs); |
076d467a MQ |
232 | |
233 | need_context_ops = bdrv_get_aio_context(bs) != job->job.aio_context; | |
234 | ||
235 | if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { | |
132ada80 KW |
236 | aio_context_release(job->job.aio_context); |
237 | } | |
228ca37e | 238 | c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job, |
258b7765 | 239 | errp); |
076d467a | 240 | if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { |
132ada80 KW |
241 | aio_context_acquire(job->job.aio_context); |
242 | } | |
76d554e2 KW |
243 | if (c == NULL) { |
244 | return -EPERM; | |
245 | } | |
246 | ||
247 | job->nodes = g_slist_prepend(job->nodes, c); | |
23d402d4 | 248 | bdrv_op_block_all(bs, job->blocker); |
76d554e2 KW |
249 | |
250 | return 0; | |
23d402d4 AG |
251 | } |
252 | ||
243c6ec7 EGE |
253 | /* Called with job_mutex lock held. */ |
254 | static void block_job_on_idle_locked(Notifier *n, void *opaque) | |
34dc97b9 | 255 | { |
cfe29d82 | 256 | aio_wait_kick(); |
34dc97b9 KW |
257 | } |
258 | ||
559b935f JS |
259 | bool block_job_is_internal(BlockJob *job) |
260 | { | |
33e9e9bd | 261 | return (job->job.id == NULL); |
559b935f JS |
262 | } |
263 | ||
bd21935b KW |
264 | const BlockJobDriver *block_job_driver(BlockJob *job) |
265 | { | |
9f6bb4c0 | 266 | return container_of(job->job.driver, BlockJobDriver, job_driver); |
bd21935b KW |
267 | } |
268 | ||
da01ff7f KW |
269 | /* Assumes the job_mutex is held */ |
270 | static bool job_timer_pending(Job *job) | |
271 | { | |
272 | return timer_pending(&job->sleep_timer); | |
273 | } | |
274 | ||
f41ab73f | 275 | bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp) |
2f0c9fe6 | 276 | { |
e0323a04 | 277 | const BlockJobDriver *drv = block_job_driver(job); |
aa9ef2e6 | 278 | int64_t old_speed = job->speed; |
2f0c9fe6 | 279 | |
cf81ae28 EGE |
280 | GLOBAL_STATE_CODE(); |
281 | ||
f41ab73f | 282 | if (job_apply_verb_locked(&job->job, JOB_VERB_SET_SPEED, errp) < 0) { |
775d0c05 | 283 | return false; |
0ec4dfb8 | 284 | } |
18bb6928 | 285 | if (speed < 0) { |
1ef7d9d3 KW |
286 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed", |
287 | "a non-negative value"); | |
775d0c05 | 288 | return false; |
2f0c9fe6 PB |
289 | } |
290 | ||
18bb6928 KW |
291 | ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); |
292 | ||
2f0c9fe6 | 293 | job->speed = speed; |
e0323a04 VSO |
294 | |
295 | if (drv->set_speed) { | |
f41ab73f | 296 | job_unlock(); |
e0323a04 | 297 | drv->set_speed(job, speed); |
f41ab73f | 298 | job_lock(); |
e0323a04 VSO |
299 | } |
300 | ||
d4fce188 | 301 | if (speed && speed <= old_speed) { |
775d0c05 | 302 | return true; |
aa9ef2e6 JS |
303 | } |
304 | ||
305 | /* kick only if a timer is pending */ | |
f41ab73f | 306 | job_enter_cond_locked(&job->job, job_timer_pending); |
775d0c05 VSO |
307 | |
308 | return true; | |
2f0c9fe6 PB |
309 | } |
310 | ||
f41ab73f EGE |
311 | bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) |
312 | { | |
313 | JOB_LOCK_GUARD(); | |
314 | return block_job_set_speed_locked(job, speed, errp); | |
315 | } | |
316 | ||
dee81d51 KW |
317 | int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) |
318 | { | |
e2d9faf5 | 319 | IO_CODE(); |
dee81d51 KW |
320 | return ratelimit_calculate_delay(&job->limit, n); |
321 | } | |
322 | ||
f41ab73f | 323 | BlockJobInfo *block_job_query_locked(BlockJob *job, Error **errp) |
30e628b7 | 324 | { |
559b935f | 325 | BlockJobInfo *info; |
a7b4f8fc | 326 | uint64_t progress_current, progress_total; |
559b935f | 327 | |
cf81ae28 EGE |
328 | GLOBAL_STATE_CODE(); |
329 | ||
559b935f JS |
330 | if (block_job_is_internal(job)) { |
331 | error_setg(errp, "Cannot query QEMU internal jobs"); | |
332 | return NULL; | |
333 | } | |
a7b4f8fc EGE |
334 | |
335 | progress_get_snapshot(&job->job.progress, &progress_current, | |
336 | &progress_total); | |
337 | ||
559b935f | 338 | info = g_new0(BlockJobInfo, 1); |
252291ea | 339 | info->type = g_strdup(job_type_str(&job->job)); |
33e9e9bd | 340 | info->device = g_strdup(job->job.id); |
d73415a3 | 341 | info->busy = qatomic_read(&job->job.busy); |
da01ff7f | 342 | info->paused = job->job.pause_count > 0; |
a7b4f8fc EGE |
343 | info->offset = progress_current; |
344 | info->len = progress_total; | |
32c81a4a PB |
345 | info->speed = job->speed; |
346 | info->io_status = job->iostatus; | |
f41ab73f | 347 | info->ready = job_is_ready_locked(&job->job), |
a50c2ab8 | 348 | info->status = job->job.status; |
bb02b65c KW |
349 | info->auto_finalize = job->job.auto_finalize; |
350 | info->auto_dismiss = job->job.auto_dismiss; | |
3b6ad623 SG |
351 | if (job->job.ret) { |
352 | info->has_error = true; | |
353 | info->error = job->job.err ? | |
354 | g_strdup(error_get_pretty(job->job.err)) : | |
355 | g_strdup(strerror(-job->job.ret)); | |
356 | } | |
30e628b7 PB |
357 | return info; |
358 | } | |
32c81a4a | 359 | |
f41ab73f EGE |
360 | BlockJobInfo *block_job_query(BlockJob *job, Error **errp) |
361 | { | |
362 | JOB_LOCK_GUARD(); | |
363 | return block_job_query_locked(job, errp); | |
364 | } | |
365 | ||
d59cb66d EGE |
366 | /* Called with job lock held */ |
367 | static void block_job_iostatus_set_err_locked(BlockJob *job, int error) | |
32c81a4a PB |
368 | { |
369 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { | |
370 | job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : | |
371 | BLOCK_DEVICE_IO_STATUS_FAILED; | |
372 | } | |
373 | } | |
374 | ||
243c6ec7 EGE |
375 | /* Called with job_mutex lock held. */ |
376 | static void block_job_event_cancelled_locked(Notifier *n, void *opaque) | |
bcada37b | 377 | { |
139a9f02 | 378 | BlockJob *job = opaque; |
a7b4f8fc | 379 | uint64_t progress_current, progress_total; |
139a9f02 | 380 | |
559b935f JS |
381 | if (block_job_is_internal(job)) { |
382 | return; | |
383 | } | |
384 | ||
a7b4f8fc EGE |
385 | progress_get_snapshot(&job->job.progress, &progress_current, |
386 | &progress_total); | |
387 | ||
252291ea | 388 | qapi_event_send_block_job_cancelled(job_type(&job->job), |
33e9e9bd | 389 | job->job.id, |
a7b4f8fc EGE |
390 | progress_total, |
391 | progress_current, | |
3ab72385 | 392 | job->speed); |
bcada37b | 393 | } |
32c81a4a | 394 | |
243c6ec7 EGE |
395 | /* Called with job_mutex lock held. */ |
396 | static void block_job_event_completed_locked(Notifier *n, void *opaque) | |
a66a2a36 | 397 | { |
139a9f02 KW |
398 | BlockJob *job = opaque; |
399 | const char *msg = NULL; | |
a7b4f8fc | 400 | uint64_t progress_current, progress_total; |
139a9f02 | 401 | |
559b935f JS |
402 | if (block_job_is_internal(job)) { |
403 | return; | |
404 | } | |
405 | ||
4ad35181 | 406 | if (job->job.ret < 0) { |
3b6ad623 | 407 | msg = error_get_pretty(job->job.err); |
139a9f02 KW |
408 | } |
409 | ||
a7b4f8fc EGE |
410 | progress_get_snapshot(&job->job.progress, &progress_current, |
411 | &progress_total); | |
412 | ||
252291ea | 413 | qapi_event_send_block_job_completed(job_type(&job->job), |
33e9e9bd | 414 | job->job.id, |
a7b4f8fc EGE |
415 | progress_total, |
416 | progress_current, | |
bcada37b WX |
417 | job->speed, |
418 | !!msg, | |
3ab72385 | 419 | msg); |
a66a2a36 PB |
420 | } |
421 | ||
243c6ec7 EGE |
422 | /* Called with job_mutex lock held. */ |
423 | static void block_job_event_pending_locked(Notifier *n, void *opaque) | |
5f241594 | 424 | { |
139a9f02 KW |
425 | BlockJob *job = opaque; |
426 | ||
5d4f3769 KW |
427 | if (block_job_is_internal(job)) { |
428 | return; | |
5f241594 | 429 | } |
5d4f3769 KW |
430 | |
431 | qapi_event_send_block_job_pending(job_type(&job->job), | |
3ab72385 | 432 | job->job.id); |
5f241594 JS |
433 | } |
434 | ||
243c6ec7 EGE |
435 | /* Called with job_mutex lock held. */ |
436 | static void block_job_event_ready_locked(Notifier *n, void *opaque) | |
2e1795b5 KW |
437 | { |
438 | BlockJob *job = opaque; | |
a7b4f8fc | 439 | uint64_t progress_current, progress_total; |
2e1795b5 KW |
440 | |
441 | if (block_job_is_internal(job)) { | |
442 | return; | |
443 | } | |
444 | ||
a7b4f8fc EGE |
445 | progress_get_snapshot(&job->job.progress, &progress_current, |
446 | &progress_total); | |
447 | ||
2e1795b5 KW |
448 | qapi_event_send_block_job_ready(job_type(&job->job), |
449 | job->job.id, | |
a7b4f8fc EGE |
450 | progress_total, |
451 | progress_current, | |
3ab72385 | 452 | job->speed); |
2e1795b5 KW |
453 | } |
454 | ||
455 | ||
88691b37 | 456 | void *block_job_create(const char *job_id, const BlockJobDriver *driver, |
62c9e416 | 457 | JobTxn *txn, BlockDriverState *bs, uint64_t perm, |
88691b37 PB |
458 | uint64_t shared_perm, int64_t speed, int flags, |
459 | BlockCompletionFunc *cb, void *opaque, Error **errp) | |
460 | { | |
88691b37 | 461 | BlockJob *job; |
985cac8f | 462 | int ret; |
e2d9faf5 | 463 | GLOBAL_STATE_CODE(); |
88691b37 | 464 | |
bb02b65c | 465 | if (job_id == NULL && !(flags & JOB_INTERNAL)) { |
88691b37 | 466 | job_id = bdrv_get_device_name(bs); |
88691b37 PB |
467 | } |
468 | ||
985cac8f | 469 | job = job_create(job_id, &driver->job_driver, txn, bdrv_get_aio_context(bs), |
4ad35181 | 470 | flags, cb, opaque, errp); |
33e9e9bd | 471 | if (job == NULL) { |
33e9e9bd KW |
472 | return NULL; |
473 | } | |
474 | ||
e7c1d78b | 475 | assert(is_block_job(&job->job)); |
80fa2c75 | 476 | assert(job->job.driver->free == &block_job_free); |
b15de828 | 477 | assert(job->job.driver->user_resume == &block_job_user_resume); |
e7c1d78b | 478 | |
4951967d PB |
479 | ratelimit_init(&job->limit); |
480 | ||
243c6ec7 EGE |
481 | job->finalize_cancelled_notifier.notify = block_job_event_cancelled_locked; |
482 | job->finalize_completed_notifier.notify = block_job_event_completed_locked; | |
483 | job->pending_notifier.notify = block_job_event_pending_locked; | |
484 | job->ready_notifier.notify = block_job_event_ready_locked; | |
485 | job->idle_notifier.notify = block_job_on_idle_locked; | |
139a9f02 | 486 | |
880eeec6 EGE |
487 | WITH_JOB_LOCK_GUARD() { |
488 | notifier_list_add(&job->job.on_finalize_cancelled, | |
489 | &job->finalize_cancelled_notifier); | |
490 | notifier_list_add(&job->job.on_finalize_completed, | |
491 | &job->finalize_completed_notifier); | |
492 | notifier_list_add(&job->job.on_pending, &job->pending_notifier); | |
493 | notifier_list_add(&job->job.on_ready, &job->ready_notifier); | |
494 | notifier_list_add(&job->job.on_idle, &job->idle_notifier); | |
495 | } | |
139a9f02 | 496 | |
88691b37 | 497 | error_setg(&job->blocker, "block device is in use by block job: %s", |
252291ea | 498 | job_type_str(&job->job)); |
88691b37 | 499 | |
985cac8f VSO |
500 | ret = block_job_add_bdrv(job, "main node", bs, perm, shared_perm, errp); |
501 | if (ret < 0) { | |
502 | goto fail; | |
503 | } | |
88691b37 | 504 | |
985cac8f | 505 | bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); |
88691b37 | 506 | |
c02b83ed | 507 | if (!block_job_set_speed(job, speed, errp)) { |
985cac8f | 508 | goto fail; |
88691b37 | 509 | } |
75859b94 | 510 | |
88691b37 | 511 | return job; |
985cac8f VSO |
512 | |
513 | fail: | |
514 | job_early_fail(&job->job); | |
515 | return NULL; | |
88691b37 PB |
516 | } |
517 | ||
f41ab73f | 518 | void block_job_iostatus_reset_locked(BlockJob *job) |
2caf63a9 | 519 | { |
cf81ae28 | 520 | GLOBAL_STATE_CODE(); |
4c241cf5 PB |
521 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { |
522 | return; | |
523 | } | |
b15de828 | 524 | assert(job->job.user_paused && job->job.pause_count > 0); |
2caf63a9 PB |
525 | job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; |
526 | } | |
527 | ||
f41ab73f EGE |
528 | void block_job_iostatus_reset(BlockJob *job) |
529 | { | |
530 | JOB_LOCK_GUARD(); | |
531 | block_job_iostatus_reset_locked(job); | |
532 | } | |
533 | ||
b15de828 KW |
534 | void block_job_user_resume(Job *job) |
535 | { | |
536 | BlockJob *bjob = container_of(job, BlockJob, job); | |
e2d9faf5 | 537 | GLOBAL_STATE_CODE(); |
b15de828 KW |
538 | block_job_iostatus_reset(bjob); |
539 | } | |
540 | ||
81e254dc | 541 | BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, |
32c81a4a PB |
542 | int is_read, int error) |
543 | { | |
544 | BlockErrorAction action; | |
e2d9faf5 | 545 | IO_CODE(); |
32c81a4a PB |
546 | |
547 | switch (on_err) { | |
548 | case BLOCKDEV_ON_ERROR_ENOSPC: | |
8c398252 | 549 | case BLOCKDEV_ON_ERROR_AUTO: |
a589569f WX |
550 | action = (error == ENOSPC) ? |
551 | BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; | |
32c81a4a PB |
552 | break; |
553 | case BLOCKDEV_ON_ERROR_STOP: | |
a589569f | 554 | action = BLOCK_ERROR_ACTION_STOP; |
32c81a4a PB |
555 | break; |
556 | case BLOCKDEV_ON_ERROR_REPORT: | |
a589569f | 557 | action = BLOCK_ERROR_ACTION_REPORT; |
32c81a4a PB |
558 | break; |
559 | case BLOCKDEV_ON_ERROR_IGNORE: | |
a589569f | 560 | action = BLOCK_ERROR_ACTION_IGNORE; |
32c81a4a PB |
561 | break; |
562 | default: | |
563 | abort(); | |
564 | } | |
559b935f | 565 | if (!block_job_is_internal(job)) { |
33e9e9bd | 566 | qapi_event_send_block_job_error(job->job.id, |
559b935f JS |
567 | is_read ? IO_OPERATION_TYPE_READ : |
568 | IO_OPERATION_TYPE_WRITE, | |
3ab72385 | 569 | action); |
559b935f | 570 | } |
a589569f | 571 | if (action == BLOCK_ERROR_ACTION_STOP) { |
880eeec6 EGE |
572 | WITH_JOB_LOCK_GUARD() { |
573 | if (!job->job.user_paused) { | |
574 | job_pause_locked(&job->job); | |
575 | /* | |
576 | * make the pause user visible, which will be | |
577 | * resumed from QMP. | |
578 | */ | |
579 | job->job.user_paused = true; | |
580 | } | |
d59cb66d | 581 | block_job_iostatus_set_err_locked(job, error); |
8d9648cb | 582 | } |
32c81a4a PB |
583 | } |
584 | return action; | |
585 | } | |
df9a3165 VSO |
586 | |
587 | AioContext *block_job_get_aio_context(BlockJob *job) | |
588 | { | |
cf81ae28 | 589 | GLOBAL_STATE_CODE(); |
df9a3165 VSO |
590 | return job->job.aio_context; |
591 | } |