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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 | |
88691b37 PB |
39 | /* |
40 | * The block job API is composed of two categories of functions. | |
41 | * | |
42 | * The first includes functions used by the monitor. The monitor is | |
43 | * peculiar in that it accesses the block job list with block_job_get, and | |
44 | * therefore needs consistency across block_job_get and the actual operation | |
45 | * (e.g. block_job_set_speed). The consistency is achieved with | |
46 | * aio_context_acquire/release. These functions are declared in blockjob.h. | |
47 | * | |
48 | * The second includes functions used by the block job drivers and sometimes | |
49 | * by the core block layer. These do not care about locking, because the | |
50 | * whole coroutine runs under the AioContext lock, and are declared in | |
51 | * blockjob_int.h. | |
52 | */ | |
53 | ||
e7c1d78b | 54 | static bool is_block_job(Job *job) |
a7112795 | 55 | { |
e7c1d78b KW |
56 | return job_type(job) == JOB_TYPE_BACKUP || |
57 | job_type(job) == JOB_TYPE_COMMIT || | |
58 | job_type(job) == JOB_TYPE_MIRROR || | |
59 | job_type(job) == JOB_TYPE_STREAM; | |
60 | } | |
61 | ||
62 | BlockJob *block_job_next(BlockJob *bjob) | |
63 | { | |
64 | Job *job = bjob ? &bjob->job : NULL; | |
65 | ||
66 | do { | |
67 | job = job_next(job); | |
68 | } while (job && !is_block_job(job)); | |
69 | ||
70 | return job ? container_of(job, BlockJob, job) : NULL; | |
a7112795 AG |
71 | } |
72 | ||
ffb1f10c AG |
73 | BlockJob *block_job_get(const char *id) |
74 | { | |
e7c1d78b | 75 | Job *job = job_get(id); |
ffb1f10c | 76 | |
e7c1d78b KW |
77 | if (job && is_block_job(job)) { |
78 | return container_of(job, BlockJob, job); | |
79 | } else { | |
80 | return NULL; | |
ffb1f10c | 81 | } |
ffb1f10c AG |
82 | } |
83 | ||
80fa2c75 | 84 | void block_job_free(Job *job) |
05b0d8e3 | 85 | { |
80fa2c75 | 86 | BlockJob *bjob = container_of(job, BlockJob, job); |
80fa2c75 | 87 | |
80fa2c75 | 88 | block_job_remove_all_bdrv(bjob); |
80fa2c75 KW |
89 | blk_unref(bjob->blk); |
90 | error_free(bjob->blocker); | |
05b0d8e3 PB |
91 | } |
92 | ||
b69f777d | 93 | void block_job_drain(Job *job) |
bae8196d | 94 | { |
b69f777d | 95 | BlockJob *bjob = container_of(job, BlockJob, job); |
9f6bb4c0 KW |
96 | const JobDriver *drv = job->driver; |
97 | BlockJobDriver *bjdrv = container_of(drv, BlockJobDriver, job_driver); | |
bae8196d | 98 | |
b69f777d | 99 | blk_drain(bjob->blk); |
9f6bb4c0 KW |
100 | if (bjdrv->drain) { |
101 | bjdrv->drain(bjob); | |
bae8196d PB |
102 | } |
103 | } | |
104 | ||
f321dcb5 PB |
105 | static char *child_job_get_parent_desc(BdrvChild *c) |
106 | { | |
107 | BlockJob *job = c->opaque; | |
252291ea | 108 | return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); |
f321dcb5 PB |
109 | } |
110 | ||
ad90feba | 111 | static void child_job_drained_begin(BdrvChild *c) |
f321dcb5 | 112 | { |
ad90feba | 113 | BlockJob *job = c->opaque; |
b15de828 | 114 | job_pause(&job->job); |
f321dcb5 PB |
115 | } |
116 | ||
89bd0305 KW |
117 | static bool child_job_drained_poll(BdrvChild *c) |
118 | { | |
119 | BlockJob *bjob = c->opaque; | |
120 | Job *job = &bjob->job; | |
121 | const BlockJobDriver *drv = block_job_driver(bjob); | |
122 | ||
123 | /* An inactive or completed job doesn't have any pending requests. Jobs | |
124 | * with !job->busy are either already paused or have a pause point after | |
125 | * being reentered, so no job driver code will run before they pause. */ | |
b5a7a057 | 126 | if (!job->busy || job_is_completed(job)) { |
89bd0305 KW |
127 | return false; |
128 | } | |
129 | ||
130 | /* Otherwise, assume that it isn't fully stopped yet, but allow the job to | |
131 | * override this assumption. */ | |
132 | if (drv->drained_poll) { | |
133 | return drv->drained_poll(bjob); | |
134 | } else { | |
135 | return true; | |
136 | } | |
137 | } | |
138 | ||
e037c09c | 139 | static void child_job_drained_end(BdrvChild *c, int *drained_end_counter) |
f321dcb5 | 140 | { |
ad90feba | 141 | BlockJob *job = c->opaque; |
b15de828 | 142 | job_resume(&job->job); |
f321dcb5 PB |
143 | } |
144 | ||
9ff7f0df KW |
145 | static bool child_job_can_set_aio_ctx(BdrvChild *c, AioContext *ctx, |
146 | GSList **ignore, Error **errp) | |
147 | { | |
148 | BlockJob *job = c->opaque; | |
149 | GSList *l; | |
150 | ||
151 | for (l = job->nodes; l; l = l->next) { | |
152 | BdrvChild *sibling = l->data; | |
153 | if (!bdrv_child_can_set_aio_context(sibling, ctx, ignore, errp)) { | |
154 | return false; | |
155 | } | |
156 | } | |
157 | return true; | |
158 | } | |
159 | ||
160 | static void child_job_set_aio_ctx(BdrvChild *c, AioContext *ctx, | |
161 | GSList **ignore) | |
162 | { | |
163 | BlockJob *job = c->opaque; | |
164 | GSList *l; | |
165 | ||
166 | for (l = job->nodes; l; l = l->next) { | |
167 | BdrvChild *sibling = l->data; | |
168 | if (g_slist_find(*ignore, sibling)) { | |
169 | continue; | |
170 | } | |
171 | *ignore = g_slist_prepend(*ignore, sibling); | |
172 | bdrv_set_aio_context_ignore(sibling->bs, ctx, ignore); | |
173 | } | |
657e1203 KW |
174 | |
175 | job->job.aio_context = ctx; | |
9ff7f0df KW |
176 | } |
177 | ||
ad90feba KW |
178 | static const BdrvChildRole child_job = { |
179 | .get_parent_desc = child_job_get_parent_desc, | |
180 | .drained_begin = child_job_drained_begin, | |
89bd0305 | 181 | .drained_poll = child_job_drained_poll, |
ad90feba | 182 | .drained_end = child_job_drained_end, |
9ff7f0df KW |
183 | .can_set_aio_ctx = child_job_can_set_aio_ctx, |
184 | .set_aio_ctx = child_job_set_aio_ctx, | |
ad90feba | 185 | .stay_at_node = true, |
f321dcb5 PB |
186 | }; |
187 | ||
bbc02b90 KW |
188 | void block_job_remove_all_bdrv(BlockJob *job) |
189 | { | |
190 | GSList *l; | |
191 | for (l = job->nodes; l; l = l->next) { | |
192 | BdrvChild *c = l->data; | |
193 | bdrv_op_unblock_all(c->bs, job->blocker); | |
194 | bdrv_root_unref_child(c); | |
195 | } | |
196 | g_slist_free(job->nodes); | |
197 | job->nodes = NULL; | |
198 | } | |
199 | ||
8164102f VSO |
200 | bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) |
201 | { | |
202 | GSList *el; | |
203 | ||
204 | for (el = job->nodes; el; el = el->next) { | |
205 | BdrvChild *c = el->data; | |
206 | if (c->bs == bs) { | |
207 | return true; | |
208 | } | |
209 | } | |
210 | ||
211 | return false; | |
212 | } | |
213 | ||
76d554e2 KW |
214 | int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, |
215 | uint64_t perm, uint64_t shared_perm, Error **errp) | |
23d402d4 | 216 | { |
76d554e2 KW |
217 | BdrvChild *c; |
218 | ||
b441dc71 | 219 | bdrv_ref(bs); |
132ada80 KW |
220 | if (job->job.aio_context != qemu_get_aio_context()) { |
221 | aio_context_release(job->job.aio_context); | |
222 | } | |
223 | c = bdrv_root_attach_child(bs, name, &child_job, job->job.aio_context, | |
224 | perm, shared_perm, job, errp); | |
225 | if (job->job.aio_context != qemu_get_aio_context()) { | |
226 | aio_context_acquire(job->job.aio_context); | |
227 | } | |
76d554e2 KW |
228 | if (c == NULL) { |
229 | return -EPERM; | |
230 | } | |
231 | ||
232 | job->nodes = g_slist_prepend(job->nodes, c); | |
23d402d4 | 233 | bdrv_op_block_all(bs, job->blocker); |
76d554e2 KW |
234 | |
235 | return 0; | |
23d402d4 AG |
236 | } |
237 | ||
34dc97b9 KW |
238 | static void block_job_on_idle(Notifier *n, void *opaque) |
239 | { | |
cfe29d82 | 240 | aio_wait_kick(); |
34dc97b9 KW |
241 | } |
242 | ||
559b935f JS |
243 | bool block_job_is_internal(BlockJob *job) |
244 | { | |
33e9e9bd | 245 | return (job->job.id == NULL); |
559b935f JS |
246 | } |
247 | ||
bd21935b KW |
248 | const BlockJobDriver *block_job_driver(BlockJob *job) |
249 | { | |
9f6bb4c0 | 250 | return container_of(job->job.driver, BlockJobDriver, job_driver); |
bd21935b KW |
251 | } |
252 | ||
da01ff7f KW |
253 | /* Assumes the job_mutex is held */ |
254 | static bool job_timer_pending(Job *job) | |
255 | { | |
256 | return timer_pending(&job->sleep_timer); | |
257 | } | |
258 | ||
2f0c9fe6 PB |
259 | void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) |
260 | { | |
aa9ef2e6 | 261 | int64_t old_speed = job->speed; |
2f0c9fe6 | 262 | |
a50c2ab8 | 263 | if (job_apply_verb(&job->job, JOB_VERB_SET_SPEED, errp)) { |
0ec4dfb8 JS |
264 | return; |
265 | } | |
18bb6928 KW |
266 | if (speed < 0) { |
267 | error_setg(errp, QERR_INVALID_PARAMETER, "speed"); | |
2f0c9fe6 PB |
268 | return; |
269 | } | |
270 | ||
18bb6928 KW |
271 | ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); |
272 | ||
2f0c9fe6 | 273 | job->speed = speed; |
d4fce188 | 274 | if (speed && speed <= old_speed) { |
aa9ef2e6 JS |
275 | return; |
276 | } | |
277 | ||
278 | /* kick only if a timer is pending */ | |
da01ff7f | 279 | job_enter_cond(&job->job, job_timer_pending); |
2f0c9fe6 PB |
280 | } |
281 | ||
dee81d51 KW |
282 | int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) |
283 | { | |
284 | if (!job->speed) { | |
285 | return 0; | |
286 | } | |
287 | ||
288 | return ratelimit_calculate_delay(&job->limit, n); | |
289 | } | |
290 | ||
559b935f | 291 | BlockJobInfo *block_job_query(BlockJob *job, Error **errp) |
30e628b7 | 292 | { |
559b935f JS |
293 | BlockJobInfo *info; |
294 | ||
295 | if (block_job_is_internal(job)) { | |
296 | error_setg(errp, "Cannot query QEMU internal jobs"); | |
297 | return NULL; | |
298 | } | |
299 | info = g_new0(BlockJobInfo, 1); | |
252291ea | 300 | info->type = g_strdup(job_type_str(&job->job)); |
33e9e9bd | 301 | info->device = g_strdup(job->job.id); |
da01ff7f KW |
302 | info->busy = atomic_read(&job->job.busy); |
303 | info->paused = job->job.pause_count > 0; | |
30a5c887 KW |
304 | info->offset = job->job.progress_current; |
305 | info->len = job->job.progress_total; | |
32c81a4a PB |
306 | info->speed = job->speed; |
307 | info->io_status = job->iostatus; | |
df956ae2 | 308 | info->ready = job_is_ready(&job->job), |
a50c2ab8 | 309 | info->status = job->job.status; |
bb02b65c KW |
310 | info->auto_finalize = job->job.auto_finalize; |
311 | info->auto_dismiss = job->job.auto_dismiss; | |
4ad35181 KW |
312 | info->has_error = job->job.ret != 0; |
313 | info->error = job->job.ret ? g_strdup(strerror(-job->job.ret)) : NULL; | |
30e628b7 PB |
314 | return info; |
315 | } | |
32c81a4a PB |
316 | |
317 | static void block_job_iostatus_set_err(BlockJob *job, int error) | |
318 | { | |
319 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { | |
320 | job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : | |
321 | BLOCK_DEVICE_IO_STATUS_FAILED; | |
322 | } | |
323 | } | |
324 | ||
139a9f02 | 325 | static void block_job_event_cancelled(Notifier *n, void *opaque) |
bcada37b | 326 | { |
139a9f02 KW |
327 | BlockJob *job = opaque; |
328 | ||
559b935f JS |
329 | if (block_job_is_internal(job)) { |
330 | return; | |
331 | } | |
332 | ||
252291ea | 333 | qapi_event_send_block_job_cancelled(job_type(&job->job), |
33e9e9bd | 334 | job->job.id, |
30a5c887 KW |
335 | job->job.progress_total, |
336 | job->job.progress_current, | |
3ab72385 | 337 | job->speed); |
bcada37b | 338 | } |
32c81a4a | 339 | |
139a9f02 | 340 | static void block_job_event_completed(Notifier *n, void *opaque) |
a66a2a36 | 341 | { |
139a9f02 KW |
342 | BlockJob *job = opaque; |
343 | const char *msg = NULL; | |
344 | ||
559b935f JS |
345 | if (block_job_is_internal(job)) { |
346 | return; | |
347 | } | |
348 | ||
4ad35181 KW |
349 | if (job->job.ret < 0) { |
350 | msg = strerror(-job->job.ret); | |
139a9f02 KW |
351 | } |
352 | ||
252291ea | 353 | qapi_event_send_block_job_completed(job_type(&job->job), |
33e9e9bd | 354 | job->job.id, |
30a5c887 KW |
355 | job->job.progress_total, |
356 | job->job.progress_current, | |
bcada37b WX |
357 | job->speed, |
358 | !!msg, | |
3ab72385 | 359 | msg); |
a66a2a36 PB |
360 | } |
361 | ||
139a9f02 | 362 | static void block_job_event_pending(Notifier *n, void *opaque) |
5f241594 | 363 | { |
139a9f02 KW |
364 | BlockJob *job = opaque; |
365 | ||
5d4f3769 KW |
366 | if (block_job_is_internal(job)) { |
367 | return; | |
5f241594 | 368 | } |
5d4f3769 KW |
369 | |
370 | qapi_event_send_block_job_pending(job_type(&job->job), | |
3ab72385 | 371 | job->job.id); |
5f241594 JS |
372 | } |
373 | ||
2e1795b5 KW |
374 | static void block_job_event_ready(Notifier *n, void *opaque) |
375 | { | |
376 | BlockJob *job = opaque; | |
377 | ||
378 | if (block_job_is_internal(job)) { | |
379 | return; | |
380 | } | |
381 | ||
382 | qapi_event_send_block_job_ready(job_type(&job->job), | |
383 | job->job.id, | |
30a5c887 KW |
384 | job->job.progress_total, |
385 | job->job.progress_current, | |
3ab72385 | 386 | job->speed); |
2e1795b5 KW |
387 | } |
388 | ||
389 | ||
88691b37 PB |
390 | /* |
391 | * API for block job drivers and the block layer. These functions are | |
392 | * declared in blockjob_int.h. | |
393 | */ | |
394 | ||
395 | void *block_job_create(const char *job_id, const BlockJobDriver *driver, | |
62c9e416 | 396 | JobTxn *txn, BlockDriverState *bs, uint64_t perm, |
88691b37 PB |
397 | uint64_t shared_perm, int64_t speed, int flags, |
398 | BlockCompletionFunc *cb, void *opaque, Error **errp) | |
399 | { | |
400 | BlockBackend *blk; | |
401 | BlockJob *job; | |
402 | int ret; | |
403 | ||
bb02b65c | 404 | if (job_id == NULL && !(flags & JOB_INTERNAL)) { |
88691b37 | 405 | job_id = bdrv_get_device_name(bs); |
88691b37 PB |
406 | } |
407 | ||
d861ab3a | 408 | blk = blk_new(bdrv_get_aio_context(bs), perm, shared_perm); |
88691b37 PB |
409 | ret = blk_insert_bs(blk, bs, errp); |
410 | if (ret < 0) { | |
411 | blk_unref(blk); | |
412 | return NULL; | |
413 | } | |
414 | ||
7eaa8fb5 | 415 | job = job_create(job_id, &driver->job_driver, txn, blk_get_aio_context(blk), |
4ad35181 | 416 | flags, cb, opaque, errp); |
33e9e9bd KW |
417 | if (job == NULL) { |
418 | blk_unref(blk); | |
419 | return NULL; | |
420 | } | |
421 | ||
e7c1d78b | 422 | assert(is_block_job(&job->job)); |
80fa2c75 | 423 | assert(job->job.driver->free == &block_job_free); |
b15de828 | 424 | assert(job->job.driver->user_resume == &block_job_user_resume); |
b69f777d | 425 | assert(job->job.driver->drain == &block_job_drain); |
e7c1d78b | 426 | |
9f6bb4c0 | 427 | job->blk = blk; |
88691b37 | 428 | |
139a9f02 KW |
429 | job->finalize_cancelled_notifier.notify = block_job_event_cancelled; |
430 | job->finalize_completed_notifier.notify = block_job_event_completed; | |
431 | job->pending_notifier.notify = block_job_event_pending; | |
2e1795b5 | 432 | job->ready_notifier.notify = block_job_event_ready; |
34dc97b9 | 433 | job->idle_notifier.notify = block_job_on_idle; |
139a9f02 KW |
434 | |
435 | notifier_list_add(&job->job.on_finalize_cancelled, | |
436 | &job->finalize_cancelled_notifier); | |
437 | notifier_list_add(&job->job.on_finalize_completed, | |
438 | &job->finalize_completed_notifier); | |
439 | notifier_list_add(&job->job.on_pending, &job->pending_notifier); | |
2e1795b5 | 440 | notifier_list_add(&job->job.on_ready, &job->ready_notifier); |
34dc97b9 | 441 | notifier_list_add(&job->job.on_idle, &job->idle_notifier); |
139a9f02 | 442 | |
88691b37 | 443 | error_setg(&job->blocker, "block device is in use by block job: %s", |
252291ea | 444 | job_type_str(&job->job)); |
88691b37 | 445 | block_job_add_bdrv(job, "main node", bs, 0, BLK_PERM_ALL, &error_abort); |
88691b37 | 446 | |
88691b37 PB |
447 | bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); |
448 | ||
9ff7f0df | 449 | blk_set_allow_aio_context_change(blk, true); |
88691b37 PB |
450 | |
451 | /* Only set speed when necessary to avoid NotSupported error */ | |
452 | if (speed != 0) { | |
453 | Error *local_err = NULL; | |
454 | ||
455 | block_job_set_speed(job, speed, &local_err); | |
456 | if (local_err) { | |
4ad35181 | 457 | job_early_fail(&job->job); |
88691b37 PB |
458 | error_propagate(errp, local_err); |
459 | return NULL; | |
460 | } | |
461 | } | |
75859b94 | 462 | |
88691b37 PB |
463 | return job; |
464 | } | |
465 | ||
2caf63a9 PB |
466 | void block_job_iostatus_reset(BlockJob *job) |
467 | { | |
4c241cf5 PB |
468 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { |
469 | return; | |
470 | } | |
b15de828 | 471 | assert(job->job.user_paused && job->job.pause_count > 0); |
2caf63a9 PB |
472 | job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; |
473 | } | |
474 | ||
b15de828 KW |
475 | void block_job_user_resume(Job *job) |
476 | { | |
477 | BlockJob *bjob = container_of(job, BlockJob, job); | |
478 | block_job_iostatus_reset(bjob); | |
479 | } | |
480 | ||
81e254dc | 481 | BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, |
32c81a4a PB |
482 | int is_read, int error) |
483 | { | |
484 | BlockErrorAction action; | |
485 | ||
486 | switch (on_err) { | |
487 | case BLOCKDEV_ON_ERROR_ENOSPC: | |
8c398252 | 488 | case BLOCKDEV_ON_ERROR_AUTO: |
a589569f WX |
489 | action = (error == ENOSPC) ? |
490 | BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; | |
32c81a4a PB |
491 | break; |
492 | case BLOCKDEV_ON_ERROR_STOP: | |
a589569f | 493 | action = BLOCK_ERROR_ACTION_STOP; |
32c81a4a PB |
494 | break; |
495 | case BLOCKDEV_ON_ERROR_REPORT: | |
a589569f | 496 | action = BLOCK_ERROR_ACTION_REPORT; |
32c81a4a PB |
497 | break; |
498 | case BLOCKDEV_ON_ERROR_IGNORE: | |
a589569f | 499 | action = BLOCK_ERROR_ACTION_IGNORE; |
32c81a4a PB |
500 | break; |
501 | default: | |
502 | abort(); | |
503 | } | |
559b935f | 504 | if (!block_job_is_internal(job)) { |
33e9e9bd | 505 | qapi_event_send_block_job_error(job->job.id, |
559b935f JS |
506 | is_read ? IO_OPERATION_TYPE_READ : |
507 | IO_OPERATION_TYPE_WRITE, | |
3ab72385 | 508 | action); |
559b935f | 509 | } |
a589569f | 510 | if (action == BLOCK_ERROR_ACTION_STOP) { |
8d9648cb VSO |
511 | if (!job->job.user_paused) { |
512 | job_pause(&job->job); | |
513 | /* make the pause user visible, which will be resumed from QMP. */ | |
514 | job->job.user_paused = true; | |
515 | } | |
32c81a4a | 516 | block_job_iostatus_set_err(job, error); |
32c81a4a PB |
517 | } |
518 | return action; | |
519 | } |