12f0c9fe6SPaolo Bonzini /* 22f0c9fe6SPaolo Bonzini * QEMU System Emulator block driver 32f0c9fe6SPaolo Bonzini * 42f0c9fe6SPaolo Bonzini * Copyright (c) 2011 IBM Corp. 52f0c9fe6SPaolo Bonzini * Copyright (c) 2012 Red Hat, Inc. 62f0c9fe6SPaolo Bonzini * 72f0c9fe6SPaolo Bonzini * Permission is hereby granted, free of charge, to any person obtaining a copy 82f0c9fe6SPaolo Bonzini * of this software and associated documentation files (the "Software"), to deal 92f0c9fe6SPaolo Bonzini * in the Software without restriction, including without limitation the rights 102f0c9fe6SPaolo Bonzini * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 112f0c9fe6SPaolo Bonzini * copies of the Software, and to permit persons to whom the Software is 122f0c9fe6SPaolo Bonzini * furnished to do so, subject to the following conditions: 132f0c9fe6SPaolo Bonzini * 142f0c9fe6SPaolo Bonzini * The above copyright notice and this permission notice shall be included in 152f0c9fe6SPaolo Bonzini * all copies or substantial portions of the Software. 162f0c9fe6SPaolo Bonzini * 172f0c9fe6SPaolo Bonzini * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 182f0c9fe6SPaolo Bonzini * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 192f0c9fe6SPaolo Bonzini * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 202f0c9fe6SPaolo Bonzini * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 212f0c9fe6SPaolo Bonzini * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 222f0c9fe6SPaolo Bonzini * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 232f0c9fe6SPaolo Bonzini * THE SOFTWARE. 242f0c9fe6SPaolo Bonzini */ 252f0c9fe6SPaolo Bonzini 26d38ea87aSPeter Maydell #include "qemu/osdep.h" 27737e150eSPaolo Bonzini #include "block/block.h" 28c87621eaSJohn Snow #include "block/blockjob_int.h" 29737e150eSPaolo Bonzini #include "block/block_int.h" 30c9de4050SJohn Snow #include "block/trace.h" 31373340b2SMax Reitz #include "sysemu/block-backend.h" 32e688df6bSMarkus Armbruster #include "qapi/error.h" 339af23989SMarkus Armbruster #include "qapi/qapi-events-block-core.h" 34cc7a8ea7SMarkus Armbruster #include "qapi/qmp/qerror.h" 3510817bf0SDaniel P. Berrange #include "qemu/coroutine.h" 36db725815SMarkus Armbruster #include "qemu/main-loop.h" 371de7afc9SPaolo Bonzini #include "qemu/timer.h" 382f0c9fe6SPaolo Bonzini 39e7c1d78bSKevin Wolf static bool is_block_job(Job *job) 40a7112795SAlberto Garcia { 41e7c1d78bSKevin Wolf return job_type(job) == JOB_TYPE_BACKUP || 42e7c1d78bSKevin Wolf job_type(job) == JOB_TYPE_COMMIT || 43e7c1d78bSKevin Wolf job_type(job) == JOB_TYPE_MIRROR || 44e7c1d78bSKevin Wolf job_type(job) == JOB_TYPE_STREAM; 45a7112795SAlberto Garcia } 46e7c1d78bSKevin Wolf 47f41ab73fSEmanuele Giuseppe Esposito BlockJob *block_job_next_locked(BlockJob *bjob) 48e7c1d78bSKevin Wolf { 49e7c1d78bSKevin Wolf Job *job = bjob ? &bjob->job : NULL; 50cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 51e7c1d78bSKevin Wolf 52e7c1d78bSKevin Wolf do { 53f41ab73fSEmanuele Giuseppe Esposito job = job_next_locked(job); 54e7c1d78bSKevin Wolf } while (job && !is_block_job(job)); 55e7c1d78bSKevin Wolf 56e7c1d78bSKevin Wolf return job ? container_of(job, BlockJob, job) : NULL; 57a7112795SAlberto Garcia } 58a7112795SAlberto Garcia 59f41ab73fSEmanuele Giuseppe Esposito BlockJob *block_job_next(BlockJob *bjob) 60ffb1f10cSAlberto Garcia { 61f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 62f41ab73fSEmanuele Giuseppe Esposito return block_job_next_locked(bjob); 63f41ab73fSEmanuele Giuseppe Esposito } 64f41ab73fSEmanuele Giuseppe Esposito 65f41ab73fSEmanuele Giuseppe Esposito BlockJob *block_job_get_locked(const char *id) 66f41ab73fSEmanuele Giuseppe Esposito { 67f41ab73fSEmanuele Giuseppe Esposito Job *job = job_get_locked(id); 68cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 69ffb1f10cSAlberto Garcia 70e7c1d78bSKevin Wolf if (job && is_block_job(job)) { 71e7c1d78bSKevin Wolf return container_of(job, BlockJob, job); 72e7c1d78bSKevin Wolf } else { 73ffb1f10cSAlberto Garcia return NULL; 74ffb1f10cSAlberto Garcia } 75e7c1d78bSKevin Wolf } 76ffb1f10cSAlberto Garcia 77f41ab73fSEmanuele Giuseppe Esposito BlockJob *block_job_get(const char *id) 78f41ab73fSEmanuele Giuseppe Esposito { 79f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 80f41ab73fSEmanuele Giuseppe Esposito return block_job_get_locked(id); 81f41ab73fSEmanuele Giuseppe Esposito } 82f41ab73fSEmanuele Giuseppe Esposito 8380fa2c75SKevin Wolf void block_job_free(Job *job) 8405b0d8e3SPaolo Bonzini { 8580fa2c75SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 86e2d9faf5SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 8780fa2c75SKevin Wolf 8880fa2c75SKevin Wolf block_job_remove_all_bdrv(bjob); 894951967dSPaolo Bonzini ratelimit_destroy(&bjob->limit); 9080fa2c75SKevin Wolf error_free(bjob->blocker); 9105b0d8e3SPaolo Bonzini } 9205b0d8e3SPaolo Bonzini 93f321dcb5SPaolo Bonzini static char *child_job_get_parent_desc(BdrvChild *c) 94f321dcb5SPaolo Bonzini { 95f321dcb5SPaolo Bonzini BlockJob *job = c->opaque; 96252291eaSKevin Wolf return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); 97f321dcb5SPaolo Bonzini } 98f321dcb5SPaolo Bonzini 99ad90febaSKevin Wolf static void child_job_drained_begin(BdrvChild *c) 100f321dcb5SPaolo Bonzini { 101ad90febaSKevin Wolf BlockJob *job = c->opaque; 102b15de828SKevin Wolf job_pause(&job->job); 103f321dcb5SPaolo Bonzini } 104f321dcb5SPaolo Bonzini 10589bd0305SKevin Wolf static bool child_job_drained_poll(BdrvChild *c) 10689bd0305SKevin Wolf { 10789bd0305SKevin Wolf BlockJob *bjob = c->opaque; 10889bd0305SKevin Wolf Job *job = &bjob->job; 10989bd0305SKevin Wolf const BlockJobDriver *drv = block_job_driver(bjob); 11089bd0305SKevin Wolf 11189bd0305SKevin Wolf /* An inactive or completed job doesn't have any pending requests. Jobs 11289bd0305SKevin Wolf * with !job->busy are either already paused or have a pause point after 11389bd0305SKevin Wolf * being reentered, so no job driver code will run before they pause. */ 114880eeec6SEmanuele Giuseppe Esposito WITH_JOB_LOCK_GUARD() { 115880eeec6SEmanuele Giuseppe Esposito if (!job->busy || job_is_completed_locked(job)) { 11689bd0305SKevin Wolf return false; 11789bd0305SKevin Wolf } 118880eeec6SEmanuele Giuseppe Esposito } 11989bd0305SKevin Wolf 12089bd0305SKevin Wolf /* Otherwise, assume that it isn't fully stopped yet, but allow the job to 12189bd0305SKevin Wolf * override this assumption. */ 12289bd0305SKevin Wolf if (drv->drained_poll) { 12389bd0305SKevin Wolf return drv->drained_poll(bjob); 12489bd0305SKevin Wolf } else { 12589bd0305SKevin Wolf return true; 12689bd0305SKevin Wolf } 12789bd0305SKevin Wolf } 12889bd0305SKevin Wolf 129e037c09cSMax Reitz static void child_job_drained_end(BdrvChild *c, int *drained_end_counter) 130f321dcb5SPaolo Bonzini { 131ad90febaSKevin Wolf BlockJob *job = c->opaque; 132b15de828SKevin Wolf job_resume(&job->job); 133f321dcb5SPaolo Bonzini } 134f321dcb5SPaolo Bonzini 1359ff7f0dfSKevin Wolf static bool child_job_can_set_aio_ctx(BdrvChild *c, AioContext *ctx, 1369ff7f0dfSKevin Wolf GSList **ignore, Error **errp) 1379ff7f0dfSKevin Wolf { 1389ff7f0dfSKevin Wolf BlockJob *job = c->opaque; 1399ff7f0dfSKevin Wolf GSList *l; 1409ff7f0dfSKevin Wolf 1419ff7f0dfSKevin Wolf for (l = job->nodes; l; l = l->next) { 1429ff7f0dfSKevin Wolf BdrvChild *sibling = l->data; 1439ff7f0dfSKevin Wolf if (!bdrv_child_can_set_aio_context(sibling, ctx, ignore, errp)) { 1449ff7f0dfSKevin Wolf return false; 1459ff7f0dfSKevin Wolf } 1469ff7f0dfSKevin Wolf } 1479ff7f0dfSKevin Wolf return true; 1489ff7f0dfSKevin Wolf } 1499ff7f0dfSKevin Wolf 1509ff7f0dfSKevin Wolf static void child_job_set_aio_ctx(BdrvChild *c, AioContext *ctx, 1519ff7f0dfSKevin Wolf GSList **ignore) 1529ff7f0dfSKevin Wolf { 1539ff7f0dfSKevin Wolf BlockJob *job = c->opaque; 1549ff7f0dfSKevin Wolf GSList *l; 1559ff7f0dfSKevin Wolf 1569ff7f0dfSKevin Wolf for (l = job->nodes; l; l = l->next) { 1579ff7f0dfSKevin Wolf BdrvChild *sibling = l->data; 1589ff7f0dfSKevin Wolf if (g_slist_find(*ignore, sibling)) { 1599ff7f0dfSKevin Wolf continue; 1609ff7f0dfSKevin Wolf } 1619ff7f0dfSKevin Wolf *ignore = g_slist_prepend(*ignore, sibling); 1629ff7f0dfSKevin Wolf bdrv_set_aio_context_ignore(sibling->bs, ctx, ignore); 1639ff7f0dfSKevin Wolf } 164657e1203SKevin Wolf 165657e1203SKevin Wolf job->job.aio_context = ctx; 1669ff7f0dfSKevin Wolf } 1679ff7f0dfSKevin Wolf 1683ca1f322SVladimir Sementsov-Ogievskiy static AioContext *child_job_get_parent_aio_context(BdrvChild *c) 1693ca1f322SVladimir Sementsov-Ogievskiy { 1703ca1f322SVladimir Sementsov-Ogievskiy BlockJob *job = c->opaque; 1713ca1f322SVladimir Sementsov-Ogievskiy 1723ca1f322SVladimir Sementsov-Ogievskiy return job->job.aio_context; 1733ca1f322SVladimir Sementsov-Ogievskiy } 1743ca1f322SVladimir Sementsov-Ogievskiy 175bd86fb99SMax Reitz static const BdrvChildClass child_job = { 176ad90febaSKevin Wolf .get_parent_desc = child_job_get_parent_desc, 177ad90febaSKevin Wolf .drained_begin = child_job_drained_begin, 17889bd0305SKevin Wolf .drained_poll = child_job_drained_poll, 179ad90febaSKevin Wolf .drained_end = child_job_drained_end, 1809ff7f0dfSKevin Wolf .can_set_aio_ctx = child_job_can_set_aio_ctx, 1819ff7f0dfSKevin Wolf .set_aio_ctx = child_job_set_aio_ctx, 182ad90febaSKevin Wolf .stay_at_node = true, 1833ca1f322SVladimir Sementsov-Ogievskiy .get_parent_aio_context = child_job_get_parent_aio_context, 184f321dcb5SPaolo Bonzini }; 185f321dcb5SPaolo Bonzini 186bbc02b90SKevin Wolf void block_job_remove_all_bdrv(BlockJob *job) 187bbc02b90SKevin Wolf { 188cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 189d876bf67SSergio Lopez /* 190d876bf67SSergio Lopez * bdrv_root_unref_child() may reach child_job_[can_]set_aio_ctx(), 191d876bf67SSergio Lopez * which will also traverse job->nodes, so consume the list one by 192d876bf67SSergio Lopez * one to make sure that such a concurrent access does not attempt 193d876bf67SSergio Lopez * to process an already freed BdrvChild. 194d876bf67SSergio Lopez */ 195d876bf67SSergio Lopez while (job->nodes) { 196d876bf67SSergio Lopez GSList *l = job->nodes; 197bbc02b90SKevin Wolf BdrvChild *c = l->data; 198d876bf67SSergio Lopez 199d876bf67SSergio Lopez job->nodes = l->next; 200d876bf67SSergio Lopez 201bbc02b90SKevin Wolf bdrv_op_unblock_all(c->bs, job->blocker); 202bbc02b90SKevin Wolf bdrv_root_unref_child(c); 203d876bf67SSergio Lopez 204d876bf67SSergio Lopez g_slist_free_1(l); 205bbc02b90SKevin Wolf } 206bbc02b90SKevin Wolf } 207bbc02b90SKevin Wolf 2088164102fSVladimir Sementsov-Ogievskiy bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) 2098164102fSVladimir Sementsov-Ogievskiy { 2108164102fSVladimir Sementsov-Ogievskiy GSList *el; 211cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 2128164102fSVladimir Sementsov-Ogievskiy 2138164102fSVladimir Sementsov-Ogievskiy for (el = job->nodes; el; el = el->next) { 2148164102fSVladimir Sementsov-Ogievskiy BdrvChild *c = el->data; 2158164102fSVladimir Sementsov-Ogievskiy if (c->bs == bs) { 2168164102fSVladimir Sementsov-Ogievskiy return true; 2178164102fSVladimir Sementsov-Ogievskiy } 2188164102fSVladimir Sementsov-Ogievskiy } 2198164102fSVladimir Sementsov-Ogievskiy 2208164102fSVladimir Sementsov-Ogievskiy return false; 2218164102fSVladimir Sementsov-Ogievskiy } 2228164102fSVladimir Sementsov-Ogievskiy 22376d554e2SKevin Wolf int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, 22476d554e2SKevin Wolf uint64_t perm, uint64_t shared_perm, Error **errp) 22523d402d4SAlberto Garcia { 22676d554e2SKevin Wolf BdrvChild *c; 227076d467aSMichael Qiu bool need_context_ops; 228cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 22976d554e2SKevin Wolf 230b441dc71SAlberto Garcia bdrv_ref(bs); 231076d467aSMichael Qiu 232076d467aSMichael Qiu need_context_ops = bdrv_get_aio_context(bs) != job->job.aio_context; 233076d467aSMichael Qiu 234076d467aSMichael Qiu if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { 235132ada80SKevin Wolf aio_context_release(job->job.aio_context); 236132ada80SKevin Wolf } 237228ca37eSVladimir Sementsov-Ogievskiy c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job, 238258b7765SMax Reitz errp); 239076d467aSMichael Qiu if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { 240132ada80SKevin Wolf aio_context_acquire(job->job.aio_context); 241132ada80SKevin Wolf } 24276d554e2SKevin Wolf if (c == NULL) { 24376d554e2SKevin Wolf return -EPERM; 24476d554e2SKevin Wolf } 24576d554e2SKevin Wolf 24676d554e2SKevin Wolf job->nodes = g_slist_prepend(job->nodes, c); 24723d402d4SAlberto Garcia bdrv_op_block_all(bs, job->blocker); 24876d554e2SKevin Wolf 24976d554e2SKevin Wolf return 0; 25023d402d4SAlberto Garcia } 25123d402d4SAlberto Garcia 25234dc97b9SKevin Wolf static void block_job_on_idle(Notifier *n, void *opaque) 25334dc97b9SKevin Wolf { 254cfe29d82SKevin Wolf aio_wait_kick(); 25534dc97b9SKevin Wolf } 25634dc97b9SKevin Wolf 257559b935fSJohn Snow bool block_job_is_internal(BlockJob *job) 258559b935fSJohn Snow { 25933e9e9bdSKevin Wolf return (job->job.id == NULL); 260559b935fSJohn Snow } 261559b935fSJohn Snow 262bd21935bSKevin Wolf const BlockJobDriver *block_job_driver(BlockJob *job) 263bd21935bSKevin Wolf { 2649f6bb4c0SKevin Wolf return container_of(job->job.driver, BlockJobDriver, job_driver); 265bd21935bSKevin Wolf } 266bd21935bSKevin Wolf 267da01ff7fSKevin Wolf /* Assumes the job_mutex is held */ 268da01ff7fSKevin Wolf static bool job_timer_pending(Job *job) 269da01ff7fSKevin Wolf { 270da01ff7fSKevin Wolf return timer_pending(&job->sleep_timer); 271da01ff7fSKevin Wolf } 272da01ff7fSKevin Wolf 273f41ab73fSEmanuele Giuseppe Esposito bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp) 2742f0c9fe6SPaolo Bonzini { 275e0323a04SVladimir Sementsov-Ogievskiy const BlockJobDriver *drv = block_job_driver(job); 276aa9ef2e6SJohn Snow int64_t old_speed = job->speed; 2772f0c9fe6SPaolo Bonzini 278cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 279cf81ae28SEmanuele Giuseppe Esposito 280f41ab73fSEmanuele Giuseppe Esposito if (job_apply_verb_locked(&job->job, JOB_VERB_SET_SPEED, errp) < 0) { 281775d0c05SVladimir Sementsov-Ogievskiy return false; 2820ec4dfb8SJohn Snow } 28318bb6928SKevin Wolf if (speed < 0) { 2841ef7d9d3SKevin Wolf error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed", 2851ef7d9d3SKevin Wolf "a non-negative value"); 286775d0c05SVladimir Sementsov-Ogievskiy return false; 2872f0c9fe6SPaolo Bonzini } 2882f0c9fe6SPaolo Bonzini 28918bb6928SKevin Wolf ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); 29018bb6928SKevin Wolf 2912f0c9fe6SPaolo Bonzini job->speed = speed; 292e0323a04SVladimir Sementsov-Ogievskiy 293e0323a04SVladimir Sementsov-Ogievskiy if (drv->set_speed) { 294f41ab73fSEmanuele Giuseppe Esposito job_unlock(); 295e0323a04SVladimir Sementsov-Ogievskiy drv->set_speed(job, speed); 296f41ab73fSEmanuele Giuseppe Esposito job_lock(); 297e0323a04SVladimir Sementsov-Ogievskiy } 298e0323a04SVladimir Sementsov-Ogievskiy 299d4fce188SJohn Snow if (speed && speed <= old_speed) { 300775d0c05SVladimir Sementsov-Ogievskiy return true; 301aa9ef2e6SJohn Snow } 302aa9ef2e6SJohn Snow 303aa9ef2e6SJohn Snow /* kick only if a timer is pending */ 304f41ab73fSEmanuele Giuseppe Esposito job_enter_cond_locked(&job->job, job_timer_pending); 305775d0c05SVladimir Sementsov-Ogievskiy 306775d0c05SVladimir Sementsov-Ogievskiy return true; 3072f0c9fe6SPaolo Bonzini } 3082f0c9fe6SPaolo Bonzini 309f41ab73fSEmanuele Giuseppe Esposito bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) 310f41ab73fSEmanuele Giuseppe Esposito { 311f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 312f41ab73fSEmanuele Giuseppe Esposito return block_job_set_speed_locked(job, speed, errp); 313f41ab73fSEmanuele Giuseppe Esposito } 314f41ab73fSEmanuele Giuseppe Esposito 315dee81d51SKevin Wolf int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) 316dee81d51SKevin Wolf { 317e2d9faf5SEmanuele Giuseppe Esposito IO_CODE(); 318dee81d51SKevin Wolf return ratelimit_calculate_delay(&job->limit, n); 319dee81d51SKevin Wolf } 320dee81d51SKevin Wolf 321f41ab73fSEmanuele Giuseppe Esposito BlockJobInfo *block_job_query_locked(BlockJob *job, Error **errp) 32230e628b7SPaolo Bonzini { 323559b935fSJohn Snow BlockJobInfo *info; 324a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 325559b935fSJohn Snow 326cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 327cf81ae28SEmanuele Giuseppe Esposito 328559b935fSJohn Snow if (block_job_is_internal(job)) { 329559b935fSJohn Snow error_setg(errp, "Cannot query QEMU internal jobs"); 330559b935fSJohn Snow return NULL; 331559b935fSJohn Snow } 332a7b4f8fcSEmanuele Giuseppe Esposito 333a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 334a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 335a7b4f8fcSEmanuele Giuseppe Esposito 336559b935fSJohn Snow info = g_new0(BlockJobInfo, 1); 337252291eaSKevin Wolf info->type = g_strdup(job_type_str(&job->job)); 33833e9e9bdSKevin Wolf info->device = g_strdup(job->job.id); 339d73415a3SStefan Hajnoczi info->busy = qatomic_read(&job->job.busy); 340da01ff7fSKevin Wolf info->paused = job->job.pause_count > 0; 341a7b4f8fcSEmanuele Giuseppe Esposito info->offset = progress_current; 342a7b4f8fcSEmanuele Giuseppe Esposito info->len = progress_total; 34330e628b7SPaolo Bonzini info->speed = job->speed; 34432c81a4aSPaolo Bonzini info->io_status = job->iostatus; 345f41ab73fSEmanuele Giuseppe Esposito info->ready = job_is_ready_locked(&job->job), 346a50c2ab8SKevin Wolf info->status = job->job.status; 347bb02b65cSKevin Wolf info->auto_finalize = job->job.auto_finalize; 348bb02b65cSKevin Wolf info->auto_dismiss = job->job.auto_dismiss; 3493b6ad623SStefano Garzarella if (job->job.ret) { 3503b6ad623SStefano Garzarella info->has_error = true; 3513b6ad623SStefano Garzarella info->error = job->job.err ? 3523b6ad623SStefano Garzarella g_strdup(error_get_pretty(job->job.err)) : 3533b6ad623SStefano Garzarella g_strdup(strerror(-job->job.ret)); 3543b6ad623SStefano Garzarella } 35530e628b7SPaolo Bonzini return info; 35630e628b7SPaolo Bonzini } 35732c81a4aSPaolo Bonzini 358f41ab73fSEmanuele Giuseppe Esposito BlockJobInfo *block_job_query(BlockJob *job, Error **errp) 359f41ab73fSEmanuele Giuseppe Esposito { 360f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 361f41ab73fSEmanuele Giuseppe Esposito return block_job_query_locked(job, errp); 362f41ab73fSEmanuele Giuseppe Esposito } 363f41ab73fSEmanuele Giuseppe Esposito 36432c81a4aSPaolo Bonzini static void block_job_iostatus_set_err(BlockJob *job, int error) 36532c81a4aSPaolo Bonzini { 36632c81a4aSPaolo Bonzini if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { 36732c81a4aSPaolo Bonzini job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : 36832c81a4aSPaolo Bonzini BLOCK_DEVICE_IO_STATUS_FAILED; 36932c81a4aSPaolo Bonzini } 37032c81a4aSPaolo Bonzini } 37132c81a4aSPaolo Bonzini 372139a9f02SKevin Wolf static void block_job_event_cancelled(Notifier *n, void *opaque) 373a66a2a36SPaolo Bonzini { 374139a9f02SKevin Wolf BlockJob *job = opaque; 375a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 376139a9f02SKevin Wolf 377559b935fSJohn Snow if (block_job_is_internal(job)) { 378559b935fSJohn Snow return; 379559b935fSJohn Snow } 380559b935fSJohn Snow 381a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 382a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 383a7b4f8fcSEmanuele Giuseppe Esposito 384252291eaSKevin Wolf qapi_event_send_block_job_cancelled(job_type(&job->job), 38533e9e9bdSKevin Wolf job->job.id, 386a7b4f8fcSEmanuele Giuseppe Esposito progress_total, 387a7b4f8fcSEmanuele Giuseppe Esposito progress_current, 3883ab72385SPeter Xu job->speed); 389a66a2a36SPaolo Bonzini } 390a66a2a36SPaolo Bonzini 391139a9f02SKevin Wolf static void block_job_event_completed(Notifier *n, void *opaque) 392a66a2a36SPaolo Bonzini { 393139a9f02SKevin Wolf BlockJob *job = opaque; 394139a9f02SKevin Wolf const char *msg = NULL; 395a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 396139a9f02SKevin Wolf 397559b935fSJohn Snow if (block_job_is_internal(job)) { 398559b935fSJohn Snow return; 399559b935fSJohn Snow } 400559b935fSJohn Snow 4014ad35181SKevin Wolf if (job->job.ret < 0) { 4023b6ad623SStefano Garzarella msg = error_get_pretty(job->job.err); 403139a9f02SKevin Wolf } 404139a9f02SKevin Wolf 405a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 406a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 407a7b4f8fcSEmanuele Giuseppe Esposito 408252291eaSKevin Wolf qapi_event_send_block_job_completed(job_type(&job->job), 40933e9e9bdSKevin Wolf job->job.id, 410a7b4f8fcSEmanuele Giuseppe Esposito progress_total, 411a7b4f8fcSEmanuele Giuseppe Esposito progress_current, 412bcada37bSWenchao Xia job->speed, 413bcada37bSWenchao Xia !!msg, 4143ab72385SPeter Xu msg); 415bcada37bSWenchao Xia } 416bcada37bSWenchao Xia 417139a9f02SKevin Wolf static void block_job_event_pending(Notifier *n, void *opaque) 4185f241594SJohn Snow { 419139a9f02SKevin Wolf BlockJob *job = opaque; 420139a9f02SKevin Wolf 4215d4f3769SKevin Wolf if (block_job_is_internal(job)) { 4225d4f3769SKevin Wolf return; 4235d4f3769SKevin Wolf } 4245d4f3769SKevin Wolf 425252291eaSKevin Wolf qapi_event_send_block_job_pending(job_type(&job->job), 4263ab72385SPeter Xu job->job.id); 4275f241594SJohn Snow } 4285f241594SJohn Snow 4292e1795b5SKevin Wolf static void block_job_event_ready(Notifier *n, void *opaque) 4302e1795b5SKevin Wolf { 4312e1795b5SKevin Wolf BlockJob *job = opaque; 432a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 4332e1795b5SKevin Wolf 4342e1795b5SKevin Wolf if (block_job_is_internal(job)) { 4352e1795b5SKevin Wolf return; 4362e1795b5SKevin Wolf } 4372e1795b5SKevin Wolf 438a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 439a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 440a7b4f8fcSEmanuele Giuseppe Esposito 4412e1795b5SKevin Wolf qapi_event_send_block_job_ready(job_type(&job->job), 4422e1795b5SKevin Wolf job->job.id, 443a7b4f8fcSEmanuele Giuseppe Esposito progress_total, 444a7b4f8fcSEmanuele Giuseppe Esposito progress_current, 4453ab72385SPeter Xu job->speed); 4462e1795b5SKevin Wolf } 4472e1795b5SKevin Wolf 4482e1795b5SKevin Wolf 44988691b37SPaolo Bonzini void *block_job_create(const char *job_id, const BlockJobDriver *driver, 45062c9e416SKevin Wolf JobTxn *txn, BlockDriverState *bs, uint64_t perm, 45188691b37SPaolo Bonzini uint64_t shared_perm, int64_t speed, int flags, 45288691b37SPaolo Bonzini BlockCompletionFunc *cb, void *opaque, Error **errp) 45388691b37SPaolo Bonzini { 45488691b37SPaolo Bonzini BlockJob *job; 455985cac8fSVladimir Sementsov-Ogievskiy int ret; 456e2d9faf5SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 45788691b37SPaolo Bonzini 458bb02b65cSKevin Wolf if (job_id == NULL && !(flags & JOB_INTERNAL)) { 45988691b37SPaolo Bonzini job_id = bdrv_get_device_name(bs); 46088691b37SPaolo Bonzini } 46188691b37SPaolo Bonzini 462985cac8fSVladimir Sementsov-Ogievskiy job = job_create(job_id, &driver->job_driver, txn, bdrv_get_aio_context(bs), 4634ad35181SKevin Wolf flags, cb, opaque, errp); 46433e9e9bdSKevin Wolf if (job == NULL) { 46533e9e9bdSKevin Wolf return NULL; 46633e9e9bdSKevin Wolf } 46733e9e9bdSKevin Wolf 468e7c1d78bSKevin Wolf assert(is_block_job(&job->job)); 46980fa2c75SKevin Wolf assert(job->job.driver->free == &block_job_free); 470b15de828SKevin Wolf assert(job->job.driver->user_resume == &block_job_user_resume); 471e7c1d78bSKevin Wolf 4724951967dSPaolo Bonzini ratelimit_init(&job->limit); 4734951967dSPaolo Bonzini 474139a9f02SKevin Wolf job->finalize_cancelled_notifier.notify = block_job_event_cancelled; 475139a9f02SKevin Wolf job->finalize_completed_notifier.notify = block_job_event_completed; 476139a9f02SKevin Wolf job->pending_notifier.notify = block_job_event_pending; 4772e1795b5SKevin Wolf job->ready_notifier.notify = block_job_event_ready; 47834dc97b9SKevin Wolf job->idle_notifier.notify = block_job_on_idle; 479139a9f02SKevin Wolf 480880eeec6SEmanuele Giuseppe Esposito WITH_JOB_LOCK_GUARD() { 481139a9f02SKevin Wolf notifier_list_add(&job->job.on_finalize_cancelled, 482139a9f02SKevin Wolf &job->finalize_cancelled_notifier); 483139a9f02SKevin Wolf notifier_list_add(&job->job.on_finalize_completed, 484139a9f02SKevin Wolf &job->finalize_completed_notifier); 485139a9f02SKevin Wolf notifier_list_add(&job->job.on_pending, &job->pending_notifier); 4862e1795b5SKevin Wolf notifier_list_add(&job->job.on_ready, &job->ready_notifier); 48734dc97b9SKevin Wolf notifier_list_add(&job->job.on_idle, &job->idle_notifier); 488880eeec6SEmanuele Giuseppe Esposito } 489139a9f02SKevin Wolf 49088691b37SPaolo Bonzini error_setg(&job->blocker, "block device is in use by block job: %s", 491252291eaSKevin Wolf job_type_str(&job->job)); 492985cac8fSVladimir Sementsov-Ogievskiy 493985cac8fSVladimir Sementsov-Ogievskiy ret = block_job_add_bdrv(job, "main node", bs, perm, shared_perm, errp); 494985cac8fSVladimir Sementsov-Ogievskiy if (ret < 0) { 495985cac8fSVladimir Sementsov-Ogievskiy goto fail; 496985cac8fSVladimir Sementsov-Ogievskiy } 49788691b37SPaolo Bonzini 49888691b37SPaolo Bonzini bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); 49988691b37SPaolo Bonzini 500775d0c05SVladimir Sementsov-Ogievskiy if (!block_job_set_speed(job, speed, errp)) { 501985cac8fSVladimir Sementsov-Ogievskiy goto fail; 50288691b37SPaolo Bonzini } 50375859b94SJohn Snow 50488691b37SPaolo Bonzini return job; 505985cac8fSVladimir Sementsov-Ogievskiy 506985cac8fSVladimir Sementsov-Ogievskiy fail: 507985cac8fSVladimir Sementsov-Ogievskiy job_early_fail(&job->job); 508985cac8fSVladimir Sementsov-Ogievskiy return NULL; 50988691b37SPaolo Bonzini } 51088691b37SPaolo Bonzini 511f41ab73fSEmanuele Giuseppe Esposito void block_job_iostatus_reset_locked(BlockJob *job) 5122caf63a9SPaolo Bonzini { 513cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 5144c241cf5SPaolo Bonzini if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { 5154c241cf5SPaolo Bonzini return; 5164c241cf5SPaolo Bonzini } 517b15de828SKevin Wolf assert(job->job.user_paused && job->job.pause_count > 0); 5182caf63a9SPaolo Bonzini job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; 5192caf63a9SPaolo Bonzini } 5202caf63a9SPaolo Bonzini 521f41ab73fSEmanuele Giuseppe Esposito void block_job_iostatus_reset(BlockJob *job) 522f41ab73fSEmanuele Giuseppe Esposito { 523f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 524f41ab73fSEmanuele Giuseppe Esposito block_job_iostatus_reset_locked(job); 525f41ab73fSEmanuele Giuseppe Esposito } 526f41ab73fSEmanuele Giuseppe Esposito 527b15de828SKevin Wolf void block_job_user_resume(Job *job) 528b15de828SKevin Wolf { 529b15de828SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 530e2d9faf5SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 531b15de828SKevin Wolf block_job_iostatus_reset(bjob); 532b15de828SKevin Wolf } 533b15de828SKevin Wolf 53481e254dcSKevin Wolf BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, 53532c81a4aSPaolo Bonzini int is_read, int error) 53632c81a4aSPaolo Bonzini { 53732c81a4aSPaolo Bonzini BlockErrorAction action; 538e2d9faf5SEmanuele Giuseppe Esposito IO_CODE(); 53932c81a4aSPaolo Bonzini 54032c81a4aSPaolo Bonzini switch (on_err) { 54132c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_ENOSPC: 5428c398252SKevin Wolf case BLOCKDEV_ON_ERROR_AUTO: 543a589569fSWenchao Xia action = (error == ENOSPC) ? 544a589569fSWenchao Xia BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; 54532c81a4aSPaolo Bonzini break; 54632c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_STOP: 547a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_STOP; 54832c81a4aSPaolo Bonzini break; 54932c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_REPORT: 550a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_REPORT; 55132c81a4aSPaolo Bonzini break; 55232c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_IGNORE: 553a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_IGNORE; 55432c81a4aSPaolo Bonzini break; 55532c81a4aSPaolo Bonzini default: 55632c81a4aSPaolo Bonzini abort(); 55732c81a4aSPaolo Bonzini } 558559b935fSJohn Snow if (!block_job_is_internal(job)) { 55933e9e9bdSKevin Wolf qapi_event_send_block_job_error(job->job.id, 5605a2d2cbdSWenchao Xia is_read ? IO_OPERATION_TYPE_READ : 5615a2d2cbdSWenchao Xia IO_OPERATION_TYPE_WRITE, 5623ab72385SPeter Xu action); 563559b935fSJohn Snow } 564a589569fSWenchao Xia if (action == BLOCK_ERROR_ACTION_STOP) { 565880eeec6SEmanuele Giuseppe Esposito WITH_JOB_LOCK_GUARD() { 5668d9648cbSVladimir Sementsov-Ogievskiy if (!job->job.user_paused) { 567880eeec6SEmanuele Giuseppe Esposito job_pause_locked(&job->job); 568880eeec6SEmanuele Giuseppe Esposito /* 569880eeec6SEmanuele Giuseppe Esposito * make the pause user visible, which will be 570880eeec6SEmanuele Giuseppe Esposito * resumed from QMP. 571880eeec6SEmanuele Giuseppe Esposito */ 572b15de828SKevin Wolf job->job.user_paused = true; 5738d9648cbSVladimir Sementsov-Ogievskiy } 574880eeec6SEmanuele Giuseppe Esposito } 57532c81a4aSPaolo Bonzini block_job_iostatus_set_err(job, error); 57632c81a4aSPaolo Bonzini } 57732c81a4aSPaolo Bonzini return action; 57832c81a4aSPaolo Bonzini } 579df9a3165SVladimir Sementsov-Ogievskiy 580df9a3165SVladimir Sementsov-Ogievskiy AioContext *block_job_get_aio_context(BlockJob *job) 581df9a3165SVladimir Sementsov-Ogievskiy { 582cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 583df9a3165SVladimir Sementsov-Ogievskiy return job->job.aio_context; 584df9a3165SVladimir Sementsov-Ogievskiy } 585