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_get_locked(const char *id) 60f41ab73fSEmanuele Giuseppe Esposito { 61f41ab73fSEmanuele Giuseppe Esposito Job *job = job_get_locked(id); 62cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 63ffb1f10cSAlberto Garcia 64e7c1d78bSKevin Wolf if (job && is_block_job(job)) { 65e7c1d78bSKevin Wolf return container_of(job, BlockJob, job); 66e7c1d78bSKevin Wolf } else { 67ffb1f10cSAlberto Garcia return NULL; 68ffb1f10cSAlberto Garcia } 69e7c1d78bSKevin Wolf } 70ffb1f10cSAlberto Garcia 71f41ab73fSEmanuele Giuseppe Esposito BlockJob *block_job_get(const char *id) 72f41ab73fSEmanuele Giuseppe Esposito { 73f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 74f41ab73fSEmanuele Giuseppe Esposito return block_job_get_locked(id); 75f41ab73fSEmanuele Giuseppe Esposito } 76f41ab73fSEmanuele Giuseppe Esposito 7780fa2c75SKevin Wolf void block_job_free(Job *job) 7805b0d8e3SPaolo Bonzini { 7980fa2c75SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 80e2d9faf5SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 8180fa2c75SKevin Wolf 8280fa2c75SKevin Wolf block_job_remove_all_bdrv(bjob); 834951967dSPaolo Bonzini ratelimit_destroy(&bjob->limit); 8480fa2c75SKevin Wolf error_free(bjob->blocker); 8505b0d8e3SPaolo Bonzini } 8605b0d8e3SPaolo Bonzini 87f321dcb5SPaolo Bonzini static char *child_job_get_parent_desc(BdrvChild *c) 88f321dcb5SPaolo Bonzini { 89f321dcb5SPaolo Bonzini BlockJob *job = c->opaque; 90252291eaSKevin Wolf return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); 91f321dcb5SPaolo Bonzini } 92f321dcb5SPaolo Bonzini 93ad90febaSKevin Wolf static void child_job_drained_begin(BdrvChild *c) 94f321dcb5SPaolo Bonzini { 95ad90febaSKevin Wolf BlockJob *job = c->opaque; 96b15de828SKevin Wolf job_pause(&job->job); 97f321dcb5SPaolo Bonzini } 98f321dcb5SPaolo Bonzini 9989bd0305SKevin Wolf static bool child_job_drained_poll(BdrvChild *c) 10089bd0305SKevin Wolf { 10189bd0305SKevin Wolf BlockJob *bjob = c->opaque; 10289bd0305SKevin Wolf Job *job = &bjob->job; 10389bd0305SKevin Wolf const BlockJobDriver *drv = block_job_driver(bjob); 10489bd0305SKevin Wolf 10589bd0305SKevin Wolf /* An inactive or completed job doesn't have any pending requests. Jobs 10689bd0305SKevin Wolf * with !job->busy are either already paused or have a pause point after 10789bd0305SKevin Wolf * being reentered, so no job driver code will run before they pause. */ 108880eeec6SEmanuele Giuseppe Esposito WITH_JOB_LOCK_GUARD() { 109880eeec6SEmanuele Giuseppe Esposito if (!job->busy || job_is_completed_locked(job)) { 11089bd0305SKevin Wolf return false; 11189bd0305SKevin Wolf } 112880eeec6SEmanuele Giuseppe Esposito } 11389bd0305SKevin Wolf 11489bd0305SKevin Wolf /* Otherwise, assume that it isn't fully stopped yet, but allow the job to 11589bd0305SKevin Wolf * override this assumption. */ 11689bd0305SKevin Wolf if (drv->drained_poll) { 11789bd0305SKevin Wolf return drv->drained_poll(bjob); 11889bd0305SKevin Wolf } else { 11989bd0305SKevin Wolf return true; 12089bd0305SKevin Wolf } 12189bd0305SKevin Wolf } 12289bd0305SKevin Wolf 123e037c09cSMax Reitz static void child_job_drained_end(BdrvChild *c, int *drained_end_counter) 124f321dcb5SPaolo Bonzini { 125ad90febaSKevin Wolf BlockJob *job = c->opaque; 126b15de828SKevin Wolf job_resume(&job->job); 127f321dcb5SPaolo Bonzini } 128f321dcb5SPaolo Bonzini 1299ff7f0dfSKevin Wolf static bool child_job_can_set_aio_ctx(BdrvChild *c, AioContext *ctx, 1309ff7f0dfSKevin Wolf GSList **ignore, Error **errp) 1319ff7f0dfSKevin Wolf { 1329ff7f0dfSKevin Wolf BlockJob *job = c->opaque; 1339ff7f0dfSKevin Wolf GSList *l; 1349ff7f0dfSKevin Wolf 1359ff7f0dfSKevin Wolf for (l = job->nodes; l; l = l->next) { 1369ff7f0dfSKevin Wolf BdrvChild *sibling = l->data; 1379ff7f0dfSKevin Wolf if (!bdrv_child_can_set_aio_context(sibling, ctx, ignore, errp)) { 1389ff7f0dfSKevin Wolf return false; 1399ff7f0dfSKevin Wolf } 1409ff7f0dfSKevin Wolf } 1419ff7f0dfSKevin Wolf return true; 1429ff7f0dfSKevin Wolf } 1439ff7f0dfSKevin Wolf 1449ff7f0dfSKevin Wolf static void child_job_set_aio_ctx(BdrvChild *c, AioContext *ctx, 1459ff7f0dfSKevin Wolf GSList **ignore) 1469ff7f0dfSKevin Wolf { 1479ff7f0dfSKevin Wolf BlockJob *job = c->opaque; 1489ff7f0dfSKevin Wolf GSList *l; 1499ff7f0dfSKevin Wolf 1509ff7f0dfSKevin Wolf for (l = job->nodes; l; l = l->next) { 1519ff7f0dfSKevin Wolf BdrvChild *sibling = l->data; 1529ff7f0dfSKevin Wolf if (g_slist_find(*ignore, sibling)) { 1539ff7f0dfSKevin Wolf continue; 1549ff7f0dfSKevin Wolf } 1559ff7f0dfSKevin Wolf *ignore = g_slist_prepend(*ignore, sibling); 1569ff7f0dfSKevin Wolf bdrv_set_aio_context_ignore(sibling->bs, ctx, ignore); 1579ff7f0dfSKevin Wolf } 158657e1203SKevin Wolf 1593ed4f708SEmanuele Giuseppe Esposito job_set_aio_context(&job->job, ctx); 1609ff7f0dfSKevin Wolf } 1619ff7f0dfSKevin Wolf 1623ca1f322SVladimir Sementsov-Ogievskiy static AioContext *child_job_get_parent_aio_context(BdrvChild *c) 1633ca1f322SVladimir Sementsov-Ogievskiy { 1643ca1f322SVladimir Sementsov-Ogievskiy BlockJob *job = c->opaque; 1653ed4f708SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 1663ca1f322SVladimir Sementsov-Ogievskiy 1673ca1f322SVladimir Sementsov-Ogievskiy return job->job.aio_context; 1683ca1f322SVladimir Sementsov-Ogievskiy } 1693ca1f322SVladimir Sementsov-Ogievskiy 170bd86fb99SMax Reitz static const BdrvChildClass child_job = { 171ad90febaSKevin Wolf .get_parent_desc = child_job_get_parent_desc, 172ad90febaSKevin Wolf .drained_begin = child_job_drained_begin, 17389bd0305SKevin Wolf .drained_poll = child_job_drained_poll, 174ad90febaSKevin Wolf .drained_end = child_job_drained_end, 1759ff7f0dfSKevin Wolf .can_set_aio_ctx = child_job_can_set_aio_ctx, 1769ff7f0dfSKevin Wolf .set_aio_ctx = child_job_set_aio_ctx, 177ad90febaSKevin Wolf .stay_at_node = true, 1783ca1f322SVladimir Sementsov-Ogievskiy .get_parent_aio_context = child_job_get_parent_aio_context, 179f321dcb5SPaolo Bonzini }; 180f321dcb5SPaolo Bonzini 181bbc02b90SKevin Wolf void block_job_remove_all_bdrv(BlockJob *job) 182bbc02b90SKevin Wolf { 183cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 184d876bf67SSergio Lopez /* 185d876bf67SSergio Lopez * bdrv_root_unref_child() may reach child_job_[can_]set_aio_ctx(), 186d876bf67SSergio Lopez * which will also traverse job->nodes, so consume the list one by 187d876bf67SSergio Lopez * one to make sure that such a concurrent access does not attempt 188d876bf67SSergio Lopez * to process an already freed BdrvChild. 189d876bf67SSergio Lopez */ 190d876bf67SSergio Lopez while (job->nodes) { 191d876bf67SSergio Lopez GSList *l = job->nodes; 192bbc02b90SKevin Wolf BdrvChild *c = l->data; 193d876bf67SSergio Lopez 194d876bf67SSergio Lopez job->nodes = l->next; 195d876bf67SSergio Lopez 196bbc02b90SKevin Wolf bdrv_op_unblock_all(c->bs, job->blocker); 197bbc02b90SKevin Wolf bdrv_root_unref_child(c); 198d876bf67SSergio Lopez 199d876bf67SSergio Lopez g_slist_free_1(l); 200bbc02b90SKevin Wolf } 201bbc02b90SKevin Wolf } 202bbc02b90SKevin Wolf 2038164102fSVladimir Sementsov-Ogievskiy bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) 2048164102fSVladimir Sementsov-Ogievskiy { 2058164102fSVladimir Sementsov-Ogievskiy GSList *el; 206cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 2078164102fSVladimir Sementsov-Ogievskiy 2088164102fSVladimir Sementsov-Ogievskiy for (el = job->nodes; el; el = el->next) { 2098164102fSVladimir Sementsov-Ogievskiy BdrvChild *c = el->data; 2108164102fSVladimir Sementsov-Ogievskiy if (c->bs == bs) { 2118164102fSVladimir Sementsov-Ogievskiy return true; 2128164102fSVladimir Sementsov-Ogievskiy } 2138164102fSVladimir Sementsov-Ogievskiy } 2148164102fSVladimir Sementsov-Ogievskiy 2158164102fSVladimir Sementsov-Ogievskiy return false; 2168164102fSVladimir Sementsov-Ogievskiy } 2178164102fSVladimir Sementsov-Ogievskiy 21876d554e2SKevin Wolf int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, 21976d554e2SKevin Wolf uint64_t perm, uint64_t shared_perm, Error **errp) 22023d402d4SAlberto Garcia { 22176d554e2SKevin Wolf BdrvChild *c; 222076d467aSMichael Qiu bool need_context_ops; 223cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 22476d554e2SKevin Wolf 225b441dc71SAlberto Garcia bdrv_ref(bs); 226076d467aSMichael Qiu 227076d467aSMichael Qiu need_context_ops = bdrv_get_aio_context(bs) != job->job.aio_context; 228076d467aSMichael Qiu 229076d467aSMichael Qiu if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { 230132ada80SKevin Wolf aio_context_release(job->job.aio_context); 231132ada80SKevin Wolf } 232228ca37eSVladimir Sementsov-Ogievskiy c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job, 233258b7765SMax Reitz errp); 234076d467aSMichael Qiu if (need_context_ops && job->job.aio_context != qemu_get_aio_context()) { 235132ada80SKevin Wolf aio_context_acquire(job->job.aio_context); 236132ada80SKevin Wolf } 23776d554e2SKevin Wolf if (c == NULL) { 23876d554e2SKevin Wolf return -EPERM; 23976d554e2SKevin Wolf } 24076d554e2SKevin Wolf 24176d554e2SKevin Wolf job->nodes = g_slist_prepend(job->nodes, c); 24223d402d4SAlberto Garcia bdrv_op_block_all(bs, job->blocker); 24376d554e2SKevin Wolf 24476d554e2SKevin Wolf return 0; 24523d402d4SAlberto Garcia } 24623d402d4SAlberto Garcia 247243c6ec7SEmanuele Giuseppe Esposito /* Called with job_mutex lock held. */ 248243c6ec7SEmanuele Giuseppe Esposito static void block_job_on_idle_locked(Notifier *n, void *opaque) 24934dc97b9SKevin Wolf { 250cfe29d82SKevin Wolf aio_wait_kick(); 25134dc97b9SKevin Wolf } 25234dc97b9SKevin Wolf 253559b935fSJohn Snow bool block_job_is_internal(BlockJob *job) 254559b935fSJohn Snow { 25533e9e9bdSKevin Wolf return (job->job.id == NULL); 256559b935fSJohn Snow } 257559b935fSJohn Snow 258bd21935bSKevin Wolf const BlockJobDriver *block_job_driver(BlockJob *job) 259bd21935bSKevin Wolf { 2609f6bb4c0SKevin Wolf return container_of(job->job.driver, BlockJobDriver, job_driver); 261bd21935bSKevin Wolf } 262bd21935bSKevin Wolf 263da01ff7fSKevin Wolf /* Assumes the job_mutex is held */ 264da01ff7fSKevin Wolf static bool job_timer_pending(Job *job) 265da01ff7fSKevin Wolf { 266da01ff7fSKevin Wolf return timer_pending(&job->sleep_timer); 267da01ff7fSKevin Wolf } 268da01ff7fSKevin Wolf 269f41ab73fSEmanuele Giuseppe Esposito bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp) 2702f0c9fe6SPaolo Bonzini { 271e0323a04SVladimir Sementsov-Ogievskiy const BlockJobDriver *drv = block_job_driver(job); 272aa9ef2e6SJohn Snow int64_t old_speed = job->speed; 2732f0c9fe6SPaolo Bonzini 274cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 275cf81ae28SEmanuele Giuseppe Esposito 276f41ab73fSEmanuele Giuseppe Esposito if (job_apply_verb_locked(&job->job, JOB_VERB_SET_SPEED, errp) < 0) { 277775d0c05SVladimir Sementsov-Ogievskiy return false; 2780ec4dfb8SJohn Snow } 27918bb6928SKevin Wolf if (speed < 0) { 2801ef7d9d3SKevin Wolf error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed", 2811ef7d9d3SKevin Wolf "a non-negative value"); 282775d0c05SVladimir Sementsov-Ogievskiy return false; 2832f0c9fe6SPaolo Bonzini } 2842f0c9fe6SPaolo Bonzini 28518bb6928SKevin Wolf ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); 28618bb6928SKevin Wolf 2872f0c9fe6SPaolo Bonzini job->speed = speed; 288e0323a04SVladimir Sementsov-Ogievskiy 289e0323a04SVladimir Sementsov-Ogievskiy if (drv->set_speed) { 290f41ab73fSEmanuele Giuseppe Esposito job_unlock(); 291e0323a04SVladimir Sementsov-Ogievskiy drv->set_speed(job, speed); 292f41ab73fSEmanuele Giuseppe Esposito job_lock(); 293e0323a04SVladimir Sementsov-Ogievskiy } 294e0323a04SVladimir Sementsov-Ogievskiy 295d4fce188SJohn Snow if (speed && speed <= old_speed) { 296775d0c05SVladimir Sementsov-Ogievskiy return true; 297aa9ef2e6SJohn Snow } 298aa9ef2e6SJohn Snow 299aa9ef2e6SJohn Snow /* kick only if a timer is pending */ 300f41ab73fSEmanuele Giuseppe Esposito job_enter_cond_locked(&job->job, job_timer_pending); 301775d0c05SVladimir Sementsov-Ogievskiy 302775d0c05SVladimir Sementsov-Ogievskiy return true; 3032f0c9fe6SPaolo Bonzini } 3042f0c9fe6SPaolo Bonzini 305ba6a9100SEmanuele Giuseppe Esposito static bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) 306f41ab73fSEmanuele Giuseppe Esposito { 307f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 308f41ab73fSEmanuele Giuseppe Esposito return block_job_set_speed_locked(job, speed, errp); 309f41ab73fSEmanuele Giuseppe Esposito } 310f41ab73fSEmanuele Giuseppe Esposito 311dee81d51SKevin Wolf int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) 312dee81d51SKevin Wolf { 313e2d9faf5SEmanuele Giuseppe Esposito IO_CODE(); 314dee81d51SKevin Wolf return ratelimit_calculate_delay(&job->limit, n); 315dee81d51SKevin Wolf } 316dee81d51SKevin Wolf 317f41ab73fSEmanuele Giuseppe Esposito BlockJobInfo *block_job_query_locked(BlockJob *job, Error **errp) 31830e628b7SPaolo Bonzini { 319559b935fSJohn Snow BlockJobInfo *info; 320a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 321559b935fSJohn Snow 322cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 323cf81ae28SEmanuele Giuseppe Esposito 324559b935fSJohn Snow if (block_job_is_internal(job)) { 325559b935fSJohn Snow error_setg(errp, "Cannot query QEMU internal jobs"); 326559b935fSJohn Snow return NULL; 327559b935fSJohn Snow } 328a7b4f8fcSEmanuele Giuseppe Esposito 329a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 330a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 331a7b4f8fcSEmanuele Giuseppe Esposito 332559b935fSJohn Snow info = g_new0(BlockJobInfo, 1); 333252291eaSKevin Wolf info->type = g_strdup(job_type_str(&job->job)); 33433e9e9bdSKevin Wolf info->device = g_strdup(job->job.id); 335fca26318SEmanuele Giuseppe Esposito info->busy = job->job.busy; 336da01ff7fSKevin Wolf info->paused = job->job.pause_count > 0; 337a7b4f8fcSEmanuele Giuseppe Esposito info->offset = progress_current; 338a7b4f8fcSEmanuele Giuseppe Esposito info->len = progress_total; 33930e628b7SPaolo Bonzini info->speed = job->speed; 34032c81a4aSPaolo Bonzini info->io_status = job->iostatus; 341f41ab73fSEmanuele Giuseppe Esposito info->ready = job_is_ready_locked(&job->job), 342a50c2ab8SKevin Wolf info->status = job->job.status; 343bb02b65cSKevin Wolf info->auto_finalize = job->job.auto_finalize; 344bb02b65cSKevin Wolf info->auto_dismiss = job->job.auto_dismiss; 3453b6ad623SStefano Garzarella if (job->job.ret) { 3463b6ad623SStefano Garzarella info->has_error = true; 3473b6ad623SStefano Garzarella info->error = job->job.err ? 3483b6ad623SStefano Garzarella g_strdup(error_get_pretty(job->job.err)) : 3493b6ad623SStefano Garzarella g_strdup(strerror(-job->job.ret)); 3503b6ad623SStefano Garzarella } 35130e628b7SPaolo Bonzini return info; 35230e628b7SPaolo Bonzini } 35332c81a4aSPaolo Bonzini 354d59cb66dSEmanuele Giuseppe Esposito /* Called with job lock held */ 355d59cb66dSEmanuele Giuseppe Esposito static void block_job_iostatus_set_err_locked(BlockJob *job, int error) 35632c81a4aSPaolo Bonzini { 35732c81a4aSPaolo Bonzini if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { 35832c81a4aSPaolo Bonzini job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : 35932c81a4aSPaolo Bonzini BLOCK_DEVICE_IO_STATUS_FAILED; 36032c81a4aSPaolo Bonzini } 36132c81a4aSPaolo Bonzini } 36232c81a4aSPaolo Bonzini 363243c6ec7SEmanuele Giuseppe Esposito /* Called with job_mutex lock held. */ 364243c6ec7SEmanuele Giuseppe Esposito static void block_job_event_cancelled_locked(Notifier *n, void *opaque) 365a66a2a36SPaolo Bonzini { 366139a9f02SKevin Wolf BlockJob *job = opaque; 367a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 368139a9f02SKevin Wolf 369559b935fSJohn Snow if (block_job_is_internal(job)) { 370559b935fSJohn Snow return; 371559b935fSJohn Snow } 372559b935fSJohn Snow 373a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 374a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 375a7b4f8fcSEmanuele Giuseppe Esposito 376252291eaSKevin Wolf qapi_event_send_block_job_cancelled(job_type(&job->job), 37733e9e9bdSKevin Wolf job->job.id, 378a7b4f8fcSEmanuele Giuseppe Esposito progress_total, 379a7b4f8fcSEmanuele Giuseppe Esposito progress_current, 3803ab72385SPeter Xu job->speed); 381a66a2a36SPaolo Bonzini } 382a66a2a36SPaolo Bonzini 383243c6ec7SEmanuele Giuseppe Esposito /* Called with job_mutex lock held. */ 384243c6ec7SEmanuele Giuseppe Esposito static void block_job_event_completed_locked(Notifier *n, void *opaque) 385a66a2a36SPaolo Bonzini { 386139a9f02SKevin Wolf BlockJob *job = opaque; 387139a9f02SKevin Wolf const char *msg = NULL; 388a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 389139a9f02SKevin Wolf 390559b935fSJohn Snow if (block_job_is_internal(job)) { 391559b935fSJohn Snow return; 392559b935fSJohn Snow } 393559b935fSJohn Snow 3944ad35181SKevin Wolf if (job->job.ret < 0) { 3953b6ad623SStefano Garzarella msg = error_get_pretty(job->job.err); 396139a9f02SKevin Wolf } 397139a9f02SKevin Wolf 398a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 399a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 400a7b4f8fcSEmanuele Giuseppe Esposito 401252291eaSKevin Wolf qapi_event_send_block_job_completed(job_type(&job->job), 40233e9e9bdSKevin Wolf job->job.id, 403a7b4f8fcSEmanuele Giuseppe Esposito progress_total, 404a7b4f8fcSEmanuele Giuseppe Esposito progress_current, 405bcada37bSWenchao Xia job->speed, 406bcada37bSWenchao Xia !!msg, 4073ab72385SPeter Xu msg); 408bcada37bSWenchao Xia } 409bcada37bSWenchao Xia 410243c6ec7SEmanuele Giuseppe Esposito /* Called with job_mutex lock held. */ 411243c6ec7SEmanuele Giuseppe Esposito static void block_job_event_pending_locked(Notifier *n, void *opaque) 4125f241594SJohn Snow { 413139a9f02SKevin Wolf BlockJob *job = opaque; 414139a9f02SKevin Wolf 4155d4f3769SKevin Wolf if (block_job_is_internal(job)) { 4165d4f3769SKevin Wolf return; 4175d4f3769SKevin Wolf } 4185d4f3769SKevin Wolf 419252291eaSKevin Wolf qapi_event_send_block_job_pending(job_type(&job->job), 4203ab72385SPeter Xu job->job.id); 4215f241594SJohn Snow } 4225f241594SJohn Snow 423243c6ec7SEmanuele Giuseppe Esposito /* Called with job_mutex lock held. */ 424243c6ec7SEmanuele Giuseppe Esposito static void block_job_event_ready_locked(Notifier *n, void *opaque) 4252e1795b5SKevin Wolf { 4262e1795b5SKevin Wolf BlockJob *job = opaque; 427a7b4f8fcSEmanuele Giuseppe Esposito uint64_t progress_current, progress_total; 4282e1795b5SKevin Wolf 4292e1795b5SKevin Wolf if (block_job_is_internal(job)) { 4302e1795b5SKevin Wolf return; 4312e1795b5SKevin Wolf } 4322e1795b5SKevin Wolf 433a7b4f8fcSEmanuele Giuseppe Esposito progress_get_snapshot(&job->job.progress, &progress_current, 434a7b4f8fcSEmanuele Giuseppe Esposito &progress_total); 435a7b4f8fcSEmanuele Giuseppe Esposito 4362e1795b5SKevin Wolf qapi_event_send_block_job_ready(job_type(&job->job), 4372e1795b5SKevin Wolf job->job.id, 438a7b4f8fcSEmanuele Giuseppe Esposito progress_total, 439a7b4f8fcSEmanuele Giuseppe Esposito progress_current, 4403ab72385SPeter Xu job->speed); 4412e1795b5SKevin Wolf } 4422e1795b5SKevin Wolf 4432e1795b5SKevin Wolf 44488691b37SPaolo Bonzini void *block_job_create(const char *job_id, const BlockJobDriver *driver, 44562c9e416SKevin Wolf JobTxn *txn, BlockDriverState *bs, uint64_t perm, 44688691b37SPaolo Bonzini uint64_t shared_perm, int64_t speed, int flags, 44788691b37SPaolo Bonzini BlockCompletionFunc *cb, void *opaque, Error **errp) 44888691b37SPaolo Bonzini { 44988691b37SPaolo Bonzini BlockJob *job; 450985cac8fSVladimir Sementsov-Ogievskiy int ret; 451e2d9faf5SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 45288691b37SPaolo Bonzini 453bb02b65cSKevin Wolf if (job_id == NULL && !(flags & JOB_INTERNAL)) { 45488691b37SPaolo Bonzini job_id = bdrv_get_device_name(bs); 45588691b37SPaolo Bonzini } 45688691b37SPaolo Bonzini 457985cac8fSVladimir Sementsov-Ogievskiy job = job_create(job_id, &driver->job_driver, txn, bdrv_get_aio_context(bs), 4584ad35181SKevin Wolf flags, cb, opaque, errp); 45933e9e9bdSKevin Wolf if (job == NULL) { 46033e9e9bdSKevin Wolf return NULL; 46133e9e9bdSKevin Wolf } 46233e9e9bdSKevin Wolf 463e7c1d78bSKevin Wolf assert(is_block_job(&job->job)); 46480fa2c75SKevin Wolf assert(job->job.driver->free == &block_job_free); 465b15de828SKevin Wolf assert(job->job.driver->user_resume == &block_job_user_resume); 466e7c1d78bSKevin Wolf 4674951967dSPaolo Bonzini ratelimit_init(&job->limit); 4684951967dSPaolo Bonzini 469243c6ec7SEmanuele Giuseppe Esposito job->finalize_cancelled_notifier.notify = block_job_event_cancelled_locked; 470243c6ec7SEmanuele Giuseppe Esposito job->finalize_completed_notifier.notify = block_job_event_completed_locked; 471243c6ec7SEmanuele Giuseppe Esposito job->pending_notifier.notify = block_job_event_pending_locked; 472243c6ec7SEmanuele Giuseppe Esposito job->ready_notifier.notify = block_job_event_ready_locked; 473243c6ec7SEmanuele Giuseppe Esposito job->idle_notifier.notify = block_job_on_idle_locked; 474139a9f02SKevin Wolf 475880eeec6SEmanuele Giuseppe Esposito WITH_JOB_LOCK_GUARD() { 476139a9f02SKevin Wolf notifier_list_add(&job->job.on_finalize_cancelled, 477139a9f02SKevin Wolf &job->finalize_cancelled_notifier); 478139a9f02SKevin Wolf notifier_list_add(&job->job.on_finalize_completed, 479139a9f02SKevin Wolf &job->finalize_completed_notifier); 480139a9f02SKevin Wolf notifier_list_add(&job->job.on_pending, &job->pending_notifier); 4812e1795b5SKevin Wolf notifier_list_add(&job->job.on_ready, &job->ready_notifier); 48234dc97b9SKevin Wolf notifier_list_add(&job->job.on_idle, &job->idle_notifier); 483880eeec6SEmanuele Giuseppe Esposito } 484139a9f02SKevin Wolf 48588691b37SPaolo Bonzini error_setg(&job->blocker, "block device is in use by block job: %s", 486252291eaSKevin Wolf job_type_str(&job->job)); 487985cac8fSVladimir Sementsov-Ogievskiy 488985cac8fSVladimir Sementsov-Ogievskiy ret = block_job_add_bdrv(job, "main node", bs, perm, shared_perm, errp); 489985cac8fSVladimir Sementsov-Ogievskiy if (ret < 0) { 490985cac8fSVladimir Sementsov-Ogievskiy goto fail; 491985cac8fSVladimir Sementsov-Ogievskiy } 49288691b37SPaolo Bonzini 49388691b37SPaolo Bonzini bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); 49488691b37SPaolo Bonzini 495775d0c05SVladimir Sementsov-Ogievskiy if (!block_job_set_speed(job, speed, errp)) { 496985cac8fSVladimir Sementsov-Ogievskiy goto fail; 49788691b37SPaolo Bonzini } 49875859b94SJohn Snow 49988691b37SPaolo Bonzini return job; 500985cac8fSVladimir Sementsov-Ogievskiy 501985cac8fSVladimir Sementsov-Ogievskiy fail: 502985cac8fSVladimir Sementsov-Ogievskiy job_early_fail(&job->job); 503985cac8fSVladimir Sementsov-Ogievskiy return NULL; 50488691b37SPaolo Bonzini } 50588691b37SPaolo Bonzini 506f41ab73fSEmanuele Giuseppe Esposito void block_job_iostatus_reset_locked(BlockJob *job) 5072caf63a9SPaolo Bonzini { 508cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 5094c241cf5SPaolo Bonzini if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { 5104c241cf5SPaolo Bonzini return; 5114c241cf5SPaolo Bonzini } 512b15de828SKevin Wolf assert(job->job.user_paused && job->job.pause_count > 0); 5132caf63a9SPaolo Bonzini job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; 5142caf63a9SPaolo Bonzini } 5152caf63a9SPaolo Bonzini 516ba6a9100SEmanuele Giuseppe Esposito static void block_job_iostatus_reset(BlockJob *job) 517f41ab73fSEmanuele Giuseppe Esposito { 518f41ab73fSEmanuele Giuseppe Esposito JOB_LOCK_GUARD(); 519f41ab73fSEmanuele Giuseppe Esposito block_job_iostatus_reset_locked(job); 520f41ab73fSEmanuele Giuseppe Esposito } 521f41ab73fSEmanuele Giuseppe Esposito 522b15de828SKevin Wolf void block_job_user_resume(Job *job) 523b15de828SKevin Wolf { 524b15de828SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 525e2d9faf5SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 526b15de828SKevin Wolf block_job_iostatus_reset(bjob); 527b15de828SKevin Wolf } 528b15de828SKevin Wolf 52981e254dcSKevin Wolf BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, 53032c81a4aSPaolo Bonzini int is_read, int error) 53132c81a4aSPaolo Bonzini { 53232c81a4aSPaolo Bonzini BlockErrorAction action; 533e2d9faf5SEmanuele Giuseppe Esposito IO_CODE(); 53432c81a4aSPaolo Bonzini 53532c81a4aSPaolo Bonzini switch (on_err) { 53632c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_ENOSPC: 5378c398252SKevin Wolf case BLOCKDEV_ON_ERROR_AUTO: 538a589569fSWenchao Xia action = (error == ENOSPC) ? 539a589569fSWenchao Xia BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; 54032c81a4aSPaolo Bonzini break; 54132c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_STOP: 542a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_STOP; 54332c81a4aSPaolo Bonzini break; 54432c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_REPORT: 545a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_REPORT; 54632c81a4aSPaolo Bonzini break; 54732c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_IGNORE: 548a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_IGNORE; 54932c81a4aSPaolo Bonzini break; 55032c81a4aSPaolo Bonzini default: 55132c81a4aSPaolo Bonzini abort(); 55232c81a4aSPaolo Bonzini } 553559b935fSJohn Snow if (!block_job_is_internal(job)) { 55433e9e9bdSKevin Wolf qapi_event_send_block_job_error(job->job.id, 5555a2d2cbdSWenchao Xia is_read ? IO_OPERATION_TYPE_READ : 5565a2d2cbdSWenchao Xia IO_OPERATION_TYPE_WRITE, 5573ab72385SPeter Xu action); 558559b935fSJohn Snow } 559a589569fSWenchao Xia if (action == BLOCK_ERROR_ACTION_STOP) { 560880eeec6SEmanuele Giuseppe Esposito WITH_JOB_LOCK_GUARD() { 5618d9648cbSVladimir Sementsov-Ogievskiy if (!job->job.user_paused) { 562880eeec6SEmanuele Giuseppe Esposito job_pause_locked(&job->job); 563880eeec6SEmanuele Giuseppe Esposito /* 564880eeec6SEmanuele Giuseppe Esposito * make the pause user visible, which will be 565880eeec6SEmanuele Giuseppe Esposito * resumed from QMP. 566880eeec6SEmanuele Giuseppe Esposito */ 567b15de828SKevin Wolf job->job.user_paused = true; 5688d9648cbSVladimir Sementsov-Ogievskiy } 569d59cb66dSEmanuele Giuseppe Esposito block_job_iostatus_set_err_locked(job, error); 570880eeec6SEmanuele Giuseppe Esposito } 57132c81a4aSPaolo Bonzini } 57232c81a4aSPaolo Bonzini return action; 57332c81a4aSPaolo Bonzini } 574df9a3165SVladimir Sementsov-Ogievskiy 575df9a3165SVladimir Sementsov-Ogievskiy AioContext *block_job_get_aio_context(BlockJob *job) 576df9a3165SVladimir Sementsov-Ogievskiy { 577cf81ae28SEmanuele Giuseppe Esposito GLOBAL_STATE_CODE(); 578df9a3165SVladimir Sementsov-Ogievskiy return job->job.aio_context; 579df9a3165SVladimir Sementsov-Ogievskiy } 580