]>
Commit | Line | Data |
---|---|---|
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. */ | |
b5a7a057 | 114 | if (!job->busy || job_is_completed(job)) { |
89bd0305 KW |
115 | return false; |
116 | } | |
117 | ||
118 | /* Otherwise, assume that it isn't fully stopped yet, but allow the job to | |
119 | * override this assumption. */ | |
120 | if (drv->drained_poll) { | |
121 | return drv->drained_poll(bjob); | |
122 | } else { | |
123 | return true; | |
124 | } | |
125 | } | |
126 | ||
e037c09c | 127 | static void child_job_drained_end(BdrvChild *c, int *drained_end_counter) |
f321dcb5 | 128 | { |
ad90feba | 129 | BlockJob *job = c->opaque; |
b15de828 | 130 | job_resume(&job->job); |
f321dcb5 PB |
131 | } |
132 | ||
9ff7f0df KW |
133 | static bool child_job_can_set_aio_ctx(BdrvChild *c, AioContext *ctx, |
134 | GSList **ignore, Error **errp) | |
135 | { | |
136 | BlockJob *job = c->opaque; | |
137 | GSList *l; | |
138 | ||
139 | for (l = job->nodes; l; l = l->next) { | |
140 | BdrvChild *sibling = l->data; | |
141 | if (!bdrv_child_can_set_aio_context(sibling, ctx, ignore, errp)) { | |
142 | return false; | |
143 | } | |
144 | } | |
145 | return true; | |
146 | } | |
147 | ||
148 | static void child_job_set_aio_ctx(BdrvChild *c, AioContext *ctx, | |
149 | GSList **ignore) | |
150 | { | |
151 | BlockJob *job = c->opaque; | |
152 | GSList *l; | |
153 | ||
154 | for (l = job->nodes; l; l = l->next) { | |
155 | BdrvChild *sibling = l->data; | |
156 | if (g_slist_find(*ignore, sibling)) { | |
157 | continue; | |
158 | } | |
159 | *ignore = g_slist_prepend(*ignore, sibling); | |
160 | bdrv_set_aio_context_ignore(sibling->bs, ctx, ignore); | |
161 | } | |
657e1203 KW |
162 | |
163 | job->job.aio_context = ctx; | |
9ff7f0df KW |
164 | } |
165 | ||
3ca1f322 VSO |
166 | static AioContext *child_job_get_parent_aio_context(BdrvChild *c) |
167 | { | |
168 | BlockJob *job = c->opaque; | |
169 | ||
170 | return job->job.aio_context; | |
171 | } | |
172 | ||
bd86fb99 | 173 | static const BdrvChildClass child_job = { |
ad90feba KW |
174 | .get_parent_desc = child_job_get_parent_desc, |
175 | .drained_begin = child_job_drained_begin, | |
89bd0305 | 176 | .drained_poll = child_job_drained_poll, |
ad90feba | 177 | .drained_end = child_job_drained_end, |
9ff7f0df KW |
178 | .can_set_aio_ctx = child_job_can_set_aio_ctx, |
179 | .set_aio_ctx = child_job_set_aio_ctx, | |
ad90feba | 180 | .stay_at_node = true, |
3ca1f322 | 181 | .get_parent_aio_context = child_job_get_parent_aio_context, |
f321dcb5 PB |
182 | }; |
183 | ||
bbc02b90 KW |
184 | void block_job_remove_all_bdrv(BlockJob *job) |
185 | { | |
cf81ae28 | 186 | GLOBAL_STATE_CODE(); |
d876bf67 SL |
187 | /* |
188 | * bdrv_root_unref_child() may reach child_job_[can_]set_aio_ctx(), | |
189 | * which will also traverse job->nodes, so consume the list one by | |
190 | * one to make sure that such a concurrent access does not attempt | |
191 | * to process an already freed BdrvChild. | |
192 | */ | |
193 | while (job->nodes) { | |
194 | GSList *l = job->nodes; | |
bbc02b90 | 195 | BdrvChild *c = l->data; |
d876bf67 SL |
196 | |
197 | job->nodes = l->next; | |
198 | ||
bbc02b90 KW |
199 | bdrv_op_unblock_all(c->bs, job->blocker); |
200 | bdrv_root_unref_child(c); | |
d876bf67 SL |
201 | |
202 | g_slist_free_1(l); | |
bbc02b90 | 203 | } |
bbc02b90 KW |
204 | } |
205 | ||
8164102f VSO |
206 | bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) |
207 | { | |
208 | GSList *el; | |
cf81ae28 | 209 | GLOBAL_STATE_CODE(); |
8164102f VSO |
210 | |
211 | for (el = job->nodes; el; el = el->next) { | |
212 | BdrvChild *c = el->data; | |
213 | if (c->bs == bs) { | |
214 | return true; | |
215 | } | |
216 | } | |
217 | ||
218 | return false; | |
219 | } | |
220 | ||
76d554e2 KW |
221 | int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, |
222 | uint64_t perm, uint64_t shared_perm, Error **errp) | |
23d402d4 | 223 | { |
76d554e2 | 224 | BdrvChild *c; |
076d467a | 225 | bool need_context_ops; |
cf81ae28 | 226 | GLOBAL_STATE_CODE(); |
76d554e2 | 227 | |
b441dc71 | 228 | bdrv_ref(bs); |
076d467a MQ |
229 | |
230 | need_context_ops = bdrv_get_aio_context(bs) != job->job.aio_context; | |
231 | ||
232 | if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { | |
132ada80 KW |
233 | aio_context_release(job->job.aio_context); |
234 | } | |
228ca37e | 235 | c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job, |
258b7765 | 236 | errp); |
076d467a | 237 | if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { |
132ada80 KW |
238 | aio_context_acquire(job->job.aio_context); |
239 | } | |
76d554e2 KW |
240 | if (c == NULL) { |
241 | return -EPERM; | |
242 | } | |
243 | ||
244 | job->nodes = g_slist_prepend(job->nodes, c); | |
23d402d4 | 245 | bdrv_op_block_all(bs, job->blocker); |
76d554e2 KW |
246 | |
247 | return 0; | |
23d402d4 AG |
248 | } |
249 | ||
34dc97b9 KW |
250 | static void block_job_on_idle(Notifier *n, void *opaque) |
251 | { | |
cfe29d82 | 252 | aio_wait_kick(); |
34dc97b9 KW |
253 | } |
254 | ||
559b935f JS |
255 | bool block_job_is_internal(BlockJob *job) |
256 | { | |
33e9e9bd | 257 | return (job->job.id == NULL); |
559b935f JS |
258 | } |
259 | ||
bd21935b KW |
260 | const BlockJobDriver *block_job_driver(BlockJob *job) |
261 | { | |
9f6bb4c0 | 262 | return container_of(job->job.driver, BlockJobDriver, job_driver); |
bd21935b KW |
263 | } |
264 | ||
da01ff7f KW |
265 | /* Assumes the job_mutex is held */ |
266 | static bool job_timer_pending(Job *job) | |
267 | { | |
268 | return timer_pending(&job->sleep_timer); | |
269 | } | |
270 | ||
f41ab73f | 271 | bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp) |
2f0c9fe6 | 272 | { |
e0323a04 | 273 | const BlockJobDriver *drv = block_job_driver(job); |
aa9ef2e6 | 274 | int64_t old_speed = job->speed; |
2f0c9fe6 | 275 | |
cf81ae28 EGE |
276 | GLOBAL_STATE_CODE(); |
277 | ||
f41ab73f | 278 | if (job_apply_verb_locked(&job->job, JOB_VERB_SET_SPEED, errp) < 0) { |
775d0c05 | 279 | return false; |
0ec4dfb8 | 280 | } |
18bb6928 | 281 | if (speed < 0) { |
1ef7d9d3 KW |
282 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed", |
283 | "a non-negative value"); | |
775d0c05 | 284 | return false; |
2f0c9fe6 PB |
285 | } |
286 | ||
18bb6928 KW |
287 | ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); |
288 | ||
2f0c9fe6 | 289 | job->speed = speed; |
e0323a04 VSO |
290 | |
291 | if (drv->set_speed) { | |
f41ab73f | 292 | job_unlock(); |
e0323a04 | 293 | drv->set_speed(job, speed); |
f41ab73f | 294 | job_lock(); |
e0323a04 VSO |
295 | } |
296 | ||
d4fce188 | 297 | if (speed && speed <= old_speed) { |
775d0c05 | 298 | return true; |
aa9ef2e6 JS |
299 | } |
300 | ||
301 | /* kick only if a timer is pending */ | |
f41ab73f | 302 | job_enter_cond_locked(&job->job, job_timer_pending); |
775d0c05 VSO |
303 | |
304 | return true; | |
2f0c9fe6 PB |
305 | } |
306 | ||
f41ab73f EGE |
307 | bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) |
308 | { | |
309 | JOB_LOCK_GUARD(); | |
310 | return block_job_set_speed_locked(job, speed, errp); | |
311 | } | |
312 | ||
dee81d51 KW |
313 | int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) |
314 | { | |
e2d9faf5 | 315 | IO_CODE(); |
dee81d51 KW |
316 | return ratelimit_calculate_delay(&job->limit, n); |
317 | } | |
318 | ||
f41ab73f | 319 | BlockJobInfo *block_job_query_locked(BlockJob *job, Error **errp) |
30e628b7 | 320 | { |
559b935f | 321 | BlockJobInfo *info; |
a7b4f8fc | 322 | uint64_t progress_current, progress_total; |
559b935f | 323 | |
cf81ae28 EGE |
324 | GLOBAL_STATE_CODE(); |
325 | ||
559b935f JS |
326 | if (block_job_is_internal(job)) { |
327 | error_setg(errp, "Cannot query QEMU internal jobs"); | |
328 | return NULL; | |
329 | } | |
a7b4f8fc EGE |
330 | |
331 | progress_get_snapshot(&job->job.progress, &progress_current, | |
332 | &progress_total); | |
333 | ||
559b935f | 334 | info = g_new0(BlockJobInfo, 1); |
252291ea | 335 | info->type = g_strdup(job_type_str(&job->job)); |
33e9e9bd | 336 | info->device = g_strdup(job->job.id); |
d73415a3 | 337 | info->busy = qatomic_read(&job->job.busy); |
da01ff7f | 338 | info->paused = job->job.pause_count > 0; |
a7b4f8fc EGE |
339 | info->offset = progress_current; |
340 | info->len = progress_total; | |
32c81a4a PB |
341 | info->speed = job->speed; |
342 | info->io_status = job->iostatus; | |
f41ab73f | 343 | info->ready = job_is_ready_locked(&job->job), |
a50c2ab8 | 344 | info->status = job->job.status; |
bb02b65c KW |
345 | info->auto_finalize = job->job.auto_finalize; |
346 | info->auto_dismiss = job->job.auto_dismiss; | |
3b6ad623 SG |
347 | if (job->job.ret) { |
348 | info->has_error = true; | |
349 | info->error = job->job.err ? | |
350 | g_strdup(error_get_pretty(job->job.err)) : | |
351 | g_strdup(strerror(-job->job.ret)); | |
352 | } | |
30e628b7 PB |
353 | return info; |
354 | } | |
32c81a4a | 355 | |
f41ab73f EGE |
356 | BlockJobInfo *block_job_query(BlockJob *job, Error **errp) |
357 | { | |
358 | JOB_LOCK_GUARD(); | |
359 | return block_job_query_locked(job, errp); | |
360 | } | |
361 | ||
32c81a4a PB |
362 | static void block_job_iostatus_set_err(BlockJob *job, int error) |
363 | { | |
364 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { | |
365 | job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : | |
366 | BLOCK_DEVICE_IO_STATUS_FAILED; | |
367 | } | |
368 | } | |
369 | ||
139a9f02 | 370 | static void block_job_event_cancelled(Notifier *n, void *opaque) |
bcada37b | 371 | { |
139a9f02 | 372 | BlockJob *job = opaque; |
a7b4f8fc | 373 | uint64_t progress_current, progress_total; |
139a9f02 | 374 | |
559b935f JS |
375 | if (block_job_is_internal(job)) { |
376 | return; | |
377 | } | |
378 | ||
a7b4f8fc EGE |
379 | progress_get_snapshot(&job->job.progress, &progress_current, |
380 | &progress_total); | |
381 | ||
252291ea | 382 | qapi_event_send_block_job_cancelled(job_type(&job->job), |
33e9e9bd | 383 | job->job.id, |
a7b4f8fc EGE |
384 | progress_total, |
385 | progress_current, | |
3ab72385 | 386 | job->speed); |
bcada37b | 387 | } |
32c81a4a | 388 | |
139a9f02 | 389 | static void block_job_event_completed(Notifier *n, void *opaque) |
a66a2a36 | 390 | { |
139a9f02 KW |
391 | BlockJob *job = opaque; |
392 | const char *msg = NULL; | |
a7b4f8fc | 393 | uint64_t progress_current, progress_total; |
139a9f02 | 394 | |
559b935f JS |
395 | if (block_job_is_internal(job)) { |
396 | return; | |
397 | } | |
398 | ||
4ad35181 | 399 | if (job->job.ret < 0) { |
3b6ad623 | 400 | msg = error_get_pretty(job->job.err); |
139a9f02 KW |
401 | } |
402 | ||
a7b4f8fc EGE |
403 | progress_get_snapshot(&job->job.progress, &progress_current, |
404 | &progress_total); | |
405 | ||
252291ea | 406 | qapi_event_send_block_job_completed(job_type(&job->job), |
33e9e9bd | 407 | job->job.id, |
a7b4f8fc EGE |
408 | progress_total, |
409 | progress_current, | |
bcada37b WX |
410 | job->speed, |
411 | !!msg, | |
3ab72385 | 412 | msg); |
a66a2a36 PB |
413 | } |
414 | ||
139a9f02 | 415 | static void block_job_event_pending(Notifier *n, void *opaque) |
5f241594 | 416 | { |
139a9f02 KW |
417 | BlockJob *job = opaque; |
418 | ||
5d4f3769 KW |
419 | if (block_job_is_internal(job)) { |
420 | return; | |
5f241594 | 421 | } |
5d4f3769 KW |
422 | |
423 | qapi_event_send_block_job_pending(job_type(&job->job), | |
3ab72385 | 424 | job->job.id); |
5f241594 JS |
425 | } |
426 | ||
2e1795b5 KW |
427 | static void block_job_event_ready(Notifier *n, void *opaque) |
428 | { | |
429 | BlockJob *job = opaque; | |
a7b4f8fc | 430 | uint64_t progress_current, progress_total; |
2e1795b5 KW |
431 | |
432 | if (block_job_is_internal(job)) { | |
433 | return; | |
434 | } | |
435 | ||
a7b4f8fc EGE |
436 | progress_get_snapshot(&job->job.progress, &progress_current, |
437 | &progress_total); | |
438 | ||
2e1795b5 KW |
439 | qapi_event_send_block_job_ready(job_type(&job->job), |
440 | job->job.id, | |
a7b4f8fc EGE |
441 | progress_total, |
442 | progress_current, | |
3ab72385 | 443 | job->speed); |
2e1795b5 KW |
444 | } |
445 | ||
446 | ||
88691b37 | 447 | void *block_job_create(const char *job_id, const BlockJobDriver *driver, |
62c9e416 | 448 | JobTxn *txn, BlockDriverState *bs, uint64_t perm, |
88691b37 PB |
449 | uint64_t shared_perm, int64_t speed, int flags, |
450 | BlockCompletionFunc *cb, void *opaque, Error **errp) | |
451 | { | |
88691b37 | 452 | BlockJob *job; |
985cac8f | 453 | int ret; |
e2d9faf5 | 454 | GLOBAL_STATE_CODE(); |
88691b37 | 455 | |
bb02b65c | 456 | if (job_id == NULL && !(flags & JOB_INTERNAL)) { |
88691b37 | 457 | job_id = bdrv_get_device_name(bs); |
88691b37 PB |
458 | } |
459 | ||
985cac8f | 460 | job = job_create(job_id, &driver->job_driver, txn, bdrv_get_aio_context(bs), |
4ad35181 | 461 | flags, cb, opaque, errp); |
33e9e9bd | 462 | if (job == NULL) { |
33e9e9bd KW |
463 | return NULL; |
464 | } | |
465 | ||
e7c1d78b | 466 | assert(is_block_job(&job->job)); |
80fa2c75 | 467 | assert(job->job.driver->free == &block_job_free); |
b15de828 | 468 | assert(job->job.driver->user_resume == &block_job_user_resume); |
e7c1d78b | 469 | |
4951967d PB |
470 | ratelimit_init(&job->limit); |
471 | ||
139a9f02 KW |
472 | job->finalize_cancelled_notifier.notify = block_job_event_cancelled; |
473 | job->finalize_completed_notifier.notify = block_job_event_completed; | |
474 | job->pending_notifier.notify = block_job_event_pending; | |
2e1795b5 | 475 | job->ready_notifier.notify = block_job_event_ready; |
34dc97b9 | 476 | job->idle_notifier.notify = block_job_on_idle; |
139a9f02 KW |
477 | |
478 | notifier_list_add(&job->job.on_finalize_cancelled, | |
479 | &job->finalize_cancelled_notifier); | |
480 | notifier_list_add(&job->job.on_finalize_completed, | |
481 | &job->finalize_completed_notifier); | |
482 | notifier_list_add(&job->job.on_pending, &job->pending_notifier); | |
2e1795b5 | 483 | notifier_list_add(&job->job.on_ready, &job->ready_notifier); |
34dc97b9 | 484 | notifier_list_add(&job->job.on_idle, &job->idle_notifier); |
139a9f02 | 485 | |
88691b37 | 486 | error_setg(&job->blocker, "block device is in use by block job: %s", |
252291ea | 487 | job_type_str(&job->job)); |
88691b37 | 488 | |
985cac8f VSO |
489 | ret = block_job_add_bdrv(job, "main node", bs, perm, shared_perm, errp); |
490 | if (ret < 0) { | |
491 | goto fail; | |
492 | } | |
88691b37 | 493 | |
985cac8f | 494 | bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); |
88691b37 | 495 | |
c02b83ed | 496 | if (!block_job_set_speed(job, speed, errp)) { |
985cac8f | 497 | goto fail; |
88691b37 | 498 | } |
75859b94 | 499 | |
88691b37 | 500 | return job; |
985cac8f VSO |
501 | |
502 | fail: | |
503 | job_early_fail(&job->job); | |
504 | return NULL; | |
88691b37 PB |
505 | } |
506 | ||
f41ab73f | 507 | void block_job_iostatus_reset_locked(BlockJob *job) |
2caf63a9 | 508 | { |
cf81ae28 | 509 | GLOBAL_STATE_CODE(); |
4c241cf5 PB |
510 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { |
511 | return; | |
512 | } | |
b15de828 | 513 | assert(job->job.user_paused && job->job.pause_count > 0); |
2caf63a9 PB |
514 | job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; |
515 | } | |
516 | ||
f41ab73f EGE |
517 | void block_job_iostatus_reset(BlockJob *job) |
518 | { | |
519 | JOB_LOCK_GUARD(); | |
520 | block_job_iostatus_reset_locked(job); | |
521 | } | |
522 | ||
b15de828 KW |
523 | void block_job_user_resume(Job *job) |
524 | { | |
525 | BlockJob *bjob = container_of(job, BlockJob, job); | |
e2d9faf5 | 526 | GLOBAL_STATE_CODE(); |
b15de828 KW |
527 | block_job_iostatus_reset(bjob); |
528 | } | |
529 | ||
81e254dc | 530 | BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, |
32c81a4a PB |
531 | int is_read, int error) |
532 | { | |
533 | BlockErrorAction action; | |
e2d9faf5 | 534 | IO_CODE(); |
32c81a4a PB |
535 | |
536 | switch (on_err) { | |
537 | case BLOCKDEV_ON_ERROR_ENOSPC: | |
8c398252 | 538 | case BLOCKDEV_ON_ERROR_AUTO: |
a589569f WX |
539 | action = (error == ENOSPC) ? |
540 | BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; | |
32c81a4a PB |
541 | break; |
542 | case BLOCKDEV_ON_ERROR_STOP: | |
a589569f | 543 | action = BLOCK_ERROR_ACTION_STOP; |
32c81a4a PB |
544 | break; |
545 | case BLOCKDEV_ON_ERROR_REPORT: | |
a589569f | 546 | action = BLOCK_ERROR_ACTION_REPORT; |
32c81a4a PB |
547 | break; |
548 | case BLOCKDEV_ON_ERROR_IGNORE: | |
a589569f | 549 | action = BLOCK_ERROR_ACTION_IGNORE; |
32c81a4a PB |
550 | break; |
551 | default: | |
552 | abort(); | |
553 | } | |
559b935f | 554 | if (!block_job_is_internal(job)) { |
33e9e9bd | 555 | qapi_event_send_block_job_error(job->job.id, |
559b935f JS |
556 | is_read ? IO_OPERATION_TYPE_READ : |
557 | IO_OPERATION_TYPE_WRITE, | |
3ab72385 | 558 | action); |
559b935f | 559 | } |
a589569f | 560 | if (action == BLOCK_ERROR_ACTION_STOP) { |
8d9648cb VSO |
561 | if (!job->job.user_paused) { |
562 | job_pause(&job->job); | |
563 | /* make the pause user visible, which will be resumed from QMP. */ | |
564 | job->job.user_paused = true; | |
565 | } | |
32c81a4a | 566 | block_job_iostatus_set_err(job, error); |
32c81a4a PB |
567 | } |
568 | return action; | |
569 | } | |
df9a3165 VSO |
570 | |
571 | AioContext *block_job_get_aio_context(BlockJob *job) | |
572 | { | |
cf81ae28 | 573 | GLOBAL_STATE_CODE(); |
df9a3165 VSO |
574 | return job->job.aio_context; |
575 | } |