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" 272f0c9fe6SPaolo Bonzini #include "qemu-common.h" 28737e150eSPaolo Bonzini #include "block/block.h" 29c87621eaSJohn Snow #include "block/blockjob_int.h" 30737e150eSPaolo Bonzini #include "block/block_int.h" 31c9de4050SJohn Snow #include "block/trace.h" 32373340b2SMax Reitz #include "sysemu/block-backend.h" 33e688df6bSMarkus Armbruster #include "qapi/error.h" 349af23989SMarkus Armbruster #include "qapi/qapi-events-block-core.h" 35cc7a8ea7SMarkus Armbruster #include "qapi/qmp/qerror.h" 3610817bf0SDaniel P. Berrange #include "qemu/coroutine.h" 371de7afc9SPaolo Bonzini #include "qemu/timer.h" 382f0c9fe6SPaolo Bonzini 39c55a832fSFam Zheng /* Transactional group of block jobs */ 40*62c9e416SKevin Wolf struct JobTxn { 41c55a832fSFam Zheng 42c55a832fSFam Zheng /* Is this txn being cancelled? */ 43c55a832fSFam Zheng bool aborting; 44c55a832fSFam Zheng 45c55a832fSFam Zheng /* List of jobs */ 46*62c9e416SKevin Wolf QLIST_HEAD(, Job) jobs; 47c55a832fSFam Zheng 48c55a832fSFam Zheng /* Reference count */ 49c55a832fSFam Zheng int refcnt; 50c55a832fSFam Zheng }; 51c55a832fSFam Zheng 5288691b37SPaolo Bonzini /* 5388691b37SPaolo Bonzini * The block job API is composed of two categories of functions. 5488691b37SPaolo Bonzini * 5588691b37SPaolo Bonzini * The first includes functions used by the monitor. The monitor is 5688691b37SPaolo Bonzini * peculiar in that it accesses the block job list with block_job_get, and 5788691b37SPaolo Bonzini * therefore needs consistency across block_job_get and the actual operation 5888691b37SPaolo Bonzini * (e.g. block_job_set_speed). The consistency is achieved with 5988691b37SPaolo Bonzini * aio_context_acquire/release. These functions are declared in blockjob.h. 6088691b37SPaolo Bonzini * 6188691b37SPaolo Bonzini * The second includes functions used by the block job drivers and sometimes 6288691b37SPaolo Bonzini * by the core block layer. These do not care about locking, because the 6388691b37SPaolo Bonzini * whole coroutine runs under the AioContext lock, and are declared in 6488691b37SPaolo Bonzini * blockjob_int.h. 6588691b37SPaolo Bonzini */ 6688691b37SPaolo Bonzini 67e7c1d78bSKevin Wolf static bool is_block_job(Job *job) 68a7112795SAlberto Garcia { 69e7c1d78bSKevin Wolf return job_type(job) == JOB_TYPE_BACKUP || 70e7c1d78bSKevin Wolf job_type(job) == JOB_TYPE_COMMIT || 71e7c1d78bSKevin Wolf job_type(job) == JOB_TYPE_MIRROR || 72e7c1d78bSKevin Wolf job_type(job) == JOB_TYPE_STREAM; 73a7112795SAlberto Garcia } 74e7c1d78bSKevin Wolf 75e7c1d78bSKevin Wolf BlockJob *block_job_next(BlockJob *bjob) 76e7c1d78bSKevin Wolf { 77e7c1d78bSKevin Wolf Job *job = bjob ? &bjob->job : NULL; 78e7c1d78bSKevin Wolf 79e7c1d78bSKevin Wolf do { 80e7c1d78bSKevin Wolf job = job_next(job); 81e7c1d78bSKevin Wolf } while (job && !is_block_job(job)); 82e7c1d78bSKevin Wolf 83e7c1d78bSKevin Wolf return job ? container_of(job, BlockJob, job) : NULL; 84a7112795SAlberto Garcia } 85a7112795SAlberto Garcia 86ffb1f10cSAlberto Garcia BlockJob *block_job_get(const char *id) 87ffb1f10cSAlberto Garcia { 88e7c1d78bSKevin Wolf Job *job = job_get(id); 89ffb1f10cSAlberto Garcia 90e7c1d78bSKevin Wolf if (job && is_block_job(job)) { 91e7c1d78bSKevin Wolf return container_of(job, BlockJob, job); 92e7c1d78bSKevin Wolf } else { 93ffb1f10cSAlberto Garcia return NULL; 94ffb1f10cSAlberto Garcia } 95e7c1d78bSKevin Wolf } 96ffb1f10cSAlberto Garcia 97*62c9e416SKevin Wolf JobTxn *block_job_txn_new(void) 98c8ab5c2dSPaolo Bonzini { 99*62c9e416SKevin Wolf JobTxn *txn = g_new0(JobTxn, 1); 100c8ab5c2dSPaolo Bonzini QLIST_INIT(&txn->jobs); 101c8ab5c2dSPaolo Bonzini txn->refcnt = 1; 102c8ab5c2dSPaolo Bonzini return txn; 103c8ab5c2dSPaolo Bonzini } 104c8ab5c2dSPaolo Bonzini 105*62c9e416SKevin Wolf static void block_job_txn_ref(JobTxn *txn) 106c8ab5c2dSPaolo Bonzini { 107c8ab5c2dSPaolo Bonzini txn->refcnt++; 108c8ab5c2dSPaolo Bonzini } 109c8ab5c2dSPaolo Bonzini 110*62c9e416SKevin Wolf void block_job_txn_unref(JobTxn *txn) 111c8ab5c2dSPaolo Bonzini { 112c8ab5c2dSPaolo Bonzini if (txn && --txn->refcnt == 0) { 113c8ab5c2dSPaolo Bonzini g_free(txn); 114c8ab5c2dSPaolo Bonzini } 115c8ab5c2dSPaolo Bonzini } 116c8ab5c2dSPaolo Bonzini 117*62c9e416SKevin Wolf void block_job_txn_add_job(JobTxn *txn, BlockJob *job) 118c8ab5c2dSPaolo Bonzini { 119c8ab5c2dSPaolo Bonzini if (!txn) { 120c8ab5c2dSPaolo Bonzini return; 121c8ab5c2dSPaolo Bonzini } 122c8ab5c2dSPaolo Bonzini 123c8ab5c2dSPaolo Bonzini assert(!job->txn); 124c8ab5c2dSPaolo Bonzini job->txn = txn; 125c8ab5c2dSPaolo Bonzini 126*62c9e416SKevin Wolf QLIST_INSERT_HEAD(&txn->jobs, &job->job, txn_list); 127c8ab5c2dSPaolo Bonzini block_job_txn_ref(txn); 128c8ab5c2dSPaolo Bonzini } 129c8ab5c2dSPaolo Bonzini 1304ad35181SKevin Wolf void block_job_txn_del_job(BlockJob *job) 131a865cebbSMarc-André Lureau { 132a865cebbSMarc-André Lureau if (job->txn) { 133*62c9e416SKevin Wolf QLIST_REMOVE(&job->job, txn_list); 134a865cebbSMarc-André Lureau block_job_txn_unref(job->txn); 135a865cebbSMarc-André Lureau job->txn = NULL; 136a865cebbSMarc-André Lureau } 137a865cebbSMarc-André Lureau } 138a865cebbSMarc-André Lureau 13905b0d8e3SPaolo Bonzini static void block_job_attached_aio_context(AioContext *new_context, 14005b0d8e3SPaolo Bonzini void *opaque); 14105b0d8e3SPaolo Bonzini static void block_job_detach_aio_context(void *opaque); 14205b0d8e3SPaolo Bonzini 14380fa2c75SKevin Wolf void block_job_free(Job *job) 14405b0d8e3SPaolo Bonzini { 14580fa2c75SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 14680fa2c75SKevin Wolf BlockDriverState *bs = blk_bs(bjob->blk); 14780fa2c75SKevin Wolf 14880fa2c75SKevin Wolf assert(!bjob->txn); 14980fa2c75SKevin Wolf 15005b0d8e3SPaolo Bonzini bs->job = NULL; 15180fa2c75SKevin Wolf block_job_remove_all_bdrv(bjob); 15280fa2c75SKevin Wolf blk_remove_aio_context_notifier(bjob->blk, 15305b0d8e3SPaolo Bonzini block_job_attached_aio_context, 15480fa2c75SKevin Wolf block_job_detach_aio_context, bjob); 15580fa2c75SKevin Wolf blk_unref(bjob->blk); 15680fa2c75SKevin Wolf error_free(bjob->blocker); 15705b0d8e3SPaolo Bonzini } 15805b0d8e3SPaolo Bonzini 159463e0be1SStefan Hajnoczi static void block_job_attached_aio_context(AioContext *new_context, 160463e0be1SStefan Hajnoczi void *opaque) 161463e0be1SStefan Hajnoczi { 162463e0be1SStefan Hajnoczi BlockJob *job = opaque; 163463e0be1SStefan Hajnoczi 16408be6fe2SKevin Wolf job->job.aio_context = new_context; 165463e0be1SStefan Hajnoczi if (job->driver->attached_aio_context) { 166463e0be1SStefan Hajnoczi job->driver->attached_aio_context(job, new_context); 167463e0be1SStefan Hajnoczi } 168463e0be1SStefan Hajnoczi 169b15de828SKevin Wolf job_resume(&job->job); 170463e0be1SStefan Hajnoczi } 171463e0be1SStefan Hajnoczi 172b69f777dSKevin Wolf void block_job_drain(Job *job) 173bae8196dSPaolo Bonzini { 174b69f777dSKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 175bae8196dSPaolo Bonzini 176b69f777dSKevin Wolf blk_drain(bjob->blk); 177b69f777dSKevin Wolf if (bjob->driver->drain) { 178b69f777dSKevin Wolf bjob->driver->drain(bjob); 179bae8196dSPaolo Bonzini } 180bae8196dSPaolo Bonzini } 181bae8196dSPaolo Bonzini 182463e0be1SStefan Hajnoczi static void block_job_detach_aio_context(void *opaque) 183463e0be1SStefan Hajnoczi { 184463e0be1SStefan Hajnoczi BlockJob *job = opaque; 185463e0be1SStefan Hajnoczi 186463e0be1SStefan Hajnoczi /* In case the job terminates during aio_poll()... */ 18780fa2c75SKevin Wolf job_ref(&job->job); 188463e0be1SStefan Hajnoczi 189b15de828SKevin Wolf job_pause(&job->job); 190463e0be1SStefan Hajnoczi 191dbe5e6c1SKevin Wolf while (!job->job.paused && !job_is_completed(&job->job)) { 192b69f777dSKevin Wolf job_drain(&job->job); 193463e0be1SStefan Hajnoczi } 194463e0be1SStefan Hajnoczi 19508be6fe2SKevin Wolf job->job.aio_context = NULL; 19680fa2c75SKevin Wolf job_unref(&job->job); 197463e0be1SStefan Hajnoczi } 198463e0be1SStefan Hajnoczi 199f321dcb5SPaolo Bonzini static char *child_job_get_parent_desc(BdrvChild *c) 200f321dcb5SPaolo Bonzini { 201f321dcb5SPaolo Bonzini BlockJob *job = c->opaque; 202252291eaSKevin Wolf return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); 203f321dcb5SPaolo Bonzini } 204f321dcb5SPaolo Bonzini 205ad90febaSKevin Wolf static void child_job_drained_begin(BdrvChild *c) 206f321dcb5SPaolo Bonzini { 207ad90febaSKevin Wolf BlockJob *job = c->opaque; 208b15de828SKevin Wolf job_pause(&job->job); 209f321dcb5SPaolo Bonzini } 210f321dcb5SPaolo Bonzini 211ad90febaSKevin Wolf static void child_job_drained_end(BdrvChild *c) 212f321dcb5SPaolo Bonzini { 213ad90febaSKevin Wolf BlockJob *job = c->opaque; 214b15de828SKevin Wolf job_resume(&job->job); 215f321dcb5SPaolo Bonzini } 216f321dcb5SPaolo Bonzini 217ad90febaSKevin Wolf static const BdrvChildRole child_job = { 218ad90febaSKevin Wolf .get_parent_desc = child_job_get_parent_desc, 219ad90febaSKevin Wolf .drained_begin = child_job_drained_begin, 220ad90febaSKevin Wolf .drained_end = child_job_drained_end, 221ad90febaSKevin Wolf .stay_at_node = true, 222f321dcb5SPaolo Bonzini }; 223f321dcb5SPaolo Bonzini 224bbc02b90SKevin Wolf void block_job_remove_all_bdrv(BlockJob *job) 225bbc02b90SKevin Wolf { 226bbc02b90SKevin Wolf GSList *l; 227bbc02b90SKevin Wolf for (l = job->nodes; l; l = l->next) { 228bbc02b90SKevin Wolf BdrvChild *c = l->data; 229bbc02b90SKevin Wolf bdrv_op_unblock_all(c->bs, job->blocker); 230bbc02b90SKevin Wolf bdrv_root_unref_child(c); 231bbc02b90SKevin Wolf } 232bbc02b90SKevin Wolf g_slist_free(job->nodes); 233bbc02b90SKevin Wolf job->nodes = NULL; 234bbc02b90SKevin Wolf } 235bbc02b90SKevin Wolf 23676d554e2SKevin Wolf int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, 23776d554e2SKevin Wolf uint64_t perm, uint64_t shared_perm, Error **errp) 23823d402d4SAlberto Garcia { 23976d554e2SKevin Wolf BdrvChild *c; 24076d554e2SKevin Wolf 24176d554e2SKevin Wolf c = bdrv_root_attach_child(bs, name, &child_job, perm, shared_perm, 24276d554e2SKevin Wolf job, errp); 24376d554e2SKevin Wolf if (c == NULL) { 24476d554e2SKevin Wolf return -EPERM; 24576d554e2SKevin Wolf } 24676d554e2SKevin Wolf 24776d554e2SKevin Wolf job->nodes = g_slist_prepend(job->nodes, c); 24823d402d4SAlberto Garcia bdrv_ref(bs); 24923d402d4SAlberto Garcia bdrv_op_block_all(bs, job->blocker); 25076d554e2SKevin Wolf 25176d554e2SKevin Wolf return 0; 25223d402d4SAlberto Garcia } 25323d402d4SAlberto Garcia 254559b935fSJohn Snow bool block_job_is_internal(BlockJob *job) 255559b935fSJohn Snow { 25633e9e9bdSKevin Wolf return (job->job.id == NULL); 257559b935fSJohn Snow } 258559b935fSJohn Snow 259bd21935bSKevin Wolf const BlockJobDriver *block_job_driver(BlockJob *job) 260bd21935bSKevin Wolf { 261bd21935bSKevin Wolf return job->driver; 262bd21935bSKevin Wolf } 263bd21935bSKevin Wolf 2642da4617aSJohn Snow static int block_job_prepare(BlockJob *job) 2652da4617aSJohn Snow { 2664ad35181SKevin Wolf if (job->job.ret == 0 && job->driver->prepare) { 2674ad35181SKevin Wolf job->job.ret = job->driver->prepare(job); 2682da4617aSJohn Snow } 2694ad35181SKevin Wolf return job->job.ret; 270c55a832fSFam Zheng } 271c55a832fSFam Zheng 272004e95dfSKevin Wolf static void job_cancel_async(Job *job, bool force) 2734c241cf5SPaolo Bonzini { 274004e95dfSKevin Wolf if (job->user_paused) { 275004e95dfSKevin Wolf /* Do not call job_enter here, the caller will handle it. */ 276004e95dfSKevin Wolf job->user_paused = false; 277004e95dfSKevin Wolf if (job->driver->user_resume) { 278004e95dfSKevin Wolf job->driver->user_resume(job); 2794c241cf5SPaolo Bonzini } 280004e95dfSKevin Wolf assert(job->pause_count > 0); 281004e95dfSKevin Wolf job->pause_count--; 2824c241cf5SPaolo Bonzini } 283004e95dfSKevin Wolf job->cancelled = true; 284b76e4458SLiang Li /* To prevent 'force == false' overriding a previous 'force == true' */ 285004e95dfSKevin Wolf job->force_cancel |= force; 2864c241cf5SPaolo Bonzini } 2874c241cf5SPaolo Bonzini 288*62c9e416SKevin Wolf static int block_job_txn_apply(JobTxn *txn, int fn(BlockJob *), bool lock) 289efe4d4b7SJohn Snow { 290efe4d4b7SJohn Snow AioContext *ctx; 291*62c9e416SKevin Wolf Job *job, *next; 292*62c9e416SKevin Wolf BlockJob *bjob; 2932da4617aSJohn Snow int rc = 0; 294efe4d4b7SJohn Snow 295efe4d4b7SJohn Snow QLIST_FOREACH_SAFE(job, &txn->jobs, txn_list, next) { 296*62c9e416SKevin Wolf assert(is_block_job(job)); 297*62c9e416SKevin Wolf bjob = container_of(job, BlockJob, job); 298*62c9e416SKevin Wolf 2995f241594SJohn Snow if (lock) { 300*62c9e416SKevin Wolf ctx = job->aio_context; 301efe4d4b7SJohn Snow aio_context_acquire(ctx); 3025f241594SJohn Snow } 303*62c9e416SKevin Wolf rc = fn(bjob); 3045f241594SJohn Snow if (lock) { 305efe4d4b7SJohn Snow aio_context_release(ctx); 3065f241594SJohn Snow } 3072da4617aSJohn Snow if (rc) { 3082da4617aSJohn Snow break; 309efe4d4b7SJohn Snow } 310efe4d4b7SJohn Snow } 3112da4617aSJohn Snow return rc; 3122da4617aSJohn Snow } 313efe4d4b7SJohn Snow 314c55a832fSFam Zheng static void block_job_completed_txn_abort(BlockJob *job) 315c55a832fSFam Zheng { 316c55a832fSFam Zheng AioContext *ctx; 317*62c9e416SKevin Wolf JobTxn *txn = job->txn; 318*62c9e416SKevin Wolf Job *other_job; 319c55a832fSFam Zheng 320c55a832fSFam Zheng if (txn->aborting) { 321c55a832fSFam Zheng /* 322c55a832fSFam Zheng * We are cancelled by another job, which will handle everything. 323c55a832fSFam Zheng */ 324c55a832fSFam Zheng return; 325c55a832fSFam Zheng } 326c55a832fSFam Zheng txn->aborting = true; 3274fb588e9SPaolo Bonzini block_job_txn_ref(txn); 3284fb588e9SPaolo Bonzini 329c55a832fSFam Zheng /* We are the first failed job. Cancel other jobs. */ 330c55a832fSFam Zheng QLIST_FOREACH(other_job, &txn->jobs, txn_list) { 331*62c9e416SKevin Wolf ctx = other_job->aio_context; 332c55a832fSFam Zheng aio_context_acquire(ctx); 333c55a832fSFam Zheng } 3344fb588e9SPaolo Bonzini 3354fb588e9SPaolo Bonzini /* Other jobs are effectively cancelled by us, set the status for 336c55a832fSFam Zheng * them; this job, however, may or may not be cancelled, depending 337c55a832fSFam Zheng * on the caller, so leave it. */ 3384fb588e9SPaolo Bonzini QLIST_FOREACH(other_job, &txn->jobs, txn_list) { 339*62c9e416SKevin Wolf if (other_job != &job->job) { 340*62c9e416SKevin Wolf job_cancel_async(other_job, false); 341c55a832fSFam Zheng } 342c55a832fSFam Zheng } 3434fb588e9SPaolo Bonzini while (!QLIST_EMPTY(&txn->jobs)) { 3444fb588e9SPaolo Bonzini other_job = QLIST_FIRST(&txn->jobs); 345*62c9e416SKevin Wolf ctx = other_job->aio_context; 346*62c9e416SKevin Wolf if (!job_is_completed(other_job)) { 347*62c9e416SKevin Wolf assert(job_is_cancelled(other_job)); 348*62c9e416SKevin Wolf job_finish_sync(other_job, NULL, NULL); 3494fb588e9SPaolo Bonzini } 350*62c9e416SKevin Wolf job_finalize_single(other_job); 351c55a832fSFam Zheng aio_context_release(ctx); 352c55a832fSFam Zheng } 3534fb588e9SPaolo Bonzini 3544fb588e9SPaolo Bonzini block_job_txn_unref(txn); 355c55a832fSFam Zheng } 356c55a832fSFam Zheng 35711b61fbcSJohn Snow static int block_job_needs_finalize(BlockJob *job) 35811b61fbcSJohn Snow { 359bb02b65cSKevin Wolf return !job->job.auto_finalize; 36011b61fbcSJohn Snow } 36111b61fbcSJohn Snow 3624ad35181SKevin Wolf static int block_job_finalize_single(BlockJob *job) 3634ad35181SKevin Wolf { 3644ad35181SKevin Wolf return job_finalize_single(&job->job); 3654ad35181SKevin Wolf } 3664ad35181SKevin Wolf 36711b61fbcSJohn Snow static void block_job_do_finalize(BlockJob *job) 36811b61fbcSJohn Snow { 36911b61fbcSJohn Snow int rc; 37011b61fbcSJohn Snow assert(job && job->txn); 37111b61fbcSJohn Snow 37211b61fbcSJohn Snow /* prepare the transaction to complete */ 37311b61fbcSJohn Snow rc = block_job_txn_apply(job->txn, block_job_prepare, true); 37411b61fbcSJohn Snow if (rc) { 37511b61fbcSJohn Snow block_job_completed_txn_abort(job); 37611b61fbcSJohn Snow } else { 37711b61fbcSJohn Snow block_job_txn_apply(job->txn, block_job_finalize_single, true); 37811b61fbcSJohn Snow } 37911b61fbcSJohn Snow } 38011b61fbcSJohn Snow 3815d4f3769SKevin Wolf static int block_job_transition_to_pending(BlockJob *job) 3825d4f3769SKevin Wolf { 3835d4f3769SKevin Wolf job_state_transition(&job->job, JOB_STATUS_PENDING); 3845d4f3769SKevin Wolf if (!job->job.auto_finalize) { 385139a9f02SKevin Wolf job_event_pending(&job->job); 3865d4f3769SKevin Wolf } 3875d4f3769SKevin Wolf return 0; 3885d4f3769SKevin Wolf } 3895d4f3769SKevin Wolf 390c55a832fSFam Zheng static void block_job_completed_txn_success(BlockJob *job) 391c55a832fSFam Zheng { 392*62c9e416SKevin Wolf JobTxn *txn = job->txn; 393*62c9e416SKevin Wolf Job *other_job; 3942da4617aSJohn Snow 395a50c2ab8SKevin Wolf job_state_transition(&job->job, JOB_STATUS_WAITING); 396e8af5686SJohn Snow 397c55a832fSFam Zheng /* 398c55a832fSFam Zheng * Successful completion, see if there are other running jobs in this 399c55a832fSFam Zheng * txn. 400c55a832fSFam Zheng */ 401c55a832fSFam Zheng QLIST_FOREACH(other_job, &txn->jobs, txn_list) { 402*62c9e416SKevin Wolf if (!job_is_completed(other_job)) { 403c55a832fSFam Zheng return; 404c55a832fSFam Zheng } 405*62c9e416SKevin Wolf assert(other_job->ret == 0); 406c55a832fSFam Zheng } 4072da4617aSJohn Snow 4085d4f3769SKevin Wolf block_job_txn_apply(txn, block_job_transition_to_pending, false); 40911b61fbcSJohn Snow 41011b61fbcSJohn Snow /* If no jobs need manual finalization, automatically do so */ 41111b61fbcSJohn Snow if (block_job_txn_apply(txn, block_job_needs_finalize, false) == 0) { 41211b61fbcSJohn Snow block_job_do_finalize(job); 41311b61fbcSJohn Snow } 414c55a832fSFam Zheng } 415c55a832fSFam Zheng 416da01ff7fSKevin Wolf /* Assumes the job_mutex is held */ 417da01ff7fSKevin Wolf static bool job_timer_pending(Job *job) 418da01ff7fSKevin Wolf { 419da01ff7fSKevin Wolf return timer_pending(&job->sleep_timer); 420da01ff7fSKevin Wolf } 421da01ff7fSKevin Wolf 4222f0c9fe6SPaolo Bonzini void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) 4232f0c9fe6SPaolo Bonzini { 424aa9ef2e6SJohn Snow int64_t old_speed = job->speed; 4252f0c9fe6SPaolo Bonzini 426a50c2ab8SKevin Wolf if (job_apply_verb(&job->job, JOB_VERB_SET_SPEED, errp)) { 4270ec4dfb8SJohn Snow return; 4280ec4dfb8SJohn Snow } 42918bb6928SKevin Wolf if (speed < 0) { 43018bb6928SKevin Wolf error_setg(errp, QERR_INVALID_PARAMETER, "speed"); 4312f0c9fe6SPaolo Bonzini return; 4322f0c9fe6SPaolo Bonzini } 4332f0c9fe6SPaolo Bonzini 43418bb6928SKevin Wolf ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); 43518bb6928SKevin Wolf 4362f0c9fe6SPaolo Bonzini job->speed = speed; 437d4fce188SJohn Snow if (speed && speed <= old_speed) { 438aa9ef2e6SJohn Snow return; 439aa9ef2e6SJohn Snow } 440aa9ef2e6SJohn Snow 441aa9ef2e6SJohn Snow /* kick only if a timer is pending */ 442da01ff7fSKevin Wolf job_enter_cond(&job->job, job_timer_pending); 4432f0c9fe6SPaolo Bonzini } 4442f0c9fe6SPaolo Bonzini 445dee81d51SKevin Wolf int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) 446dee81d51SKevin Wolf { 447dee81d51SKevin Wolf if (!job->speed) { 448dee81d51SKevin Wolf return 0; 449dee81d51SKevin Wolf } 450dee81d51SKevin Wolf 451dee81d51SKevin Wolf return ratelimit_calculate_delay(&job->limit, n); 452dee81d51SKevin Wolf } 453dee81d51SKevin Wolf 45411b61fbcSJohn Snow void block_job_finalize(BlockJob *job, Error **errp) 45511b61fbcSJohn Snow { 45633e9e9bdSKevin Wolf assert(job && job->job.id); 457a50c2ab8SKevin Wolf if (job_apply_verb(&job->job, JOB_VERB_FINALIZE, errp)) { 45811b61fbcSJohn Snow return; 45911b61fbcSJohn Snow } 46011b61fbcSJohn Snow block_job_do_finalize(job); 46111b61fbcSJohn Snow } 46211b61fbcSJohn Snow 46375f71059SJohn Snow void block_job_dismiss(BlockJob **jobptr, Error **errp) 46475f71059SJohn Snow { 46575f71059SJohn Snow BlockJob *job = *jobptr; 46675f71059SJohn Snow /* similarly to _complete, this is QMP-interface only. */ 46733e9e9bdSKevin Wolf assert(job->job.id); 468a50c2ab8SKevin Wolf if (job_apply_verb(&job->job, JOB_VERB_DISMISS, errp)) { 46975f71059SJohn Snow return; 47075f71059SJohn Snow } 47175f71059SJohn Snow 4724ad35181SKevin Wolf job_do_dismiss(&job->job); 47375f71059SJohn Snow *jobptr = NULL; 47475f71059SJohn Snow } 47575f71059SJohn Snow 476b76e4458SLiang Li void block_job_cancel(BlockJob *job, bool force) 4778acc72a4SPaolo Bonzini { 478a50c2ab8SKevin Wolf if (job->job.status == JOB_STATUS_CONCLUDED) { 4794ad35181SKevin Wolf job_do_dismiss(&job->job); 48011b61fbcSJohn Snow return; 48111b61fbcSJohn Snow } 482004e95dfSKevin Wolf job_cancel_async(&job->job, force); 483da01ff7fSKevin Wolf if (!job_started(&job->job)) { 4845ccac6f1SJohn Snow block_job_completed(job, -ECANCELED); 4851908a559SKevin Wolf } else if (job->job.deferred_to_main_loop) { 48611b61fbcSJohn Snow block_job_completed_txn_abort(job); 48711b61fbcSJohn Snow } else { 48811b61fbcSJohn Snow block_job_enter(job); 4895ccac6f1SJohn Snow } 4908acc72a4SPaolo Bonzini } 4918acc72a4SPaolo Bonzini 492b76e4458SLiang Li void block_job_user_cancel(BlockJob *job, bool force, Error **errp) 4930ec4dfb8SJohn Snow { 494a50c2ab8SKevin Wolf if (job_apply_verb(&job->job, JOB_VERB_CANCEL, errp)) { 4950ec4dfb8SJohn Snow return; 4960ec4dfb8SJohn Snow } 497b76e4458SLiang Li block_job_cancel(job, force); 4980ec4dfb8SJohn Snow } 4990ec4dfb8SJohn Snow 500345f9e1bSMax Reitz /* A wrapper around block_job_cancel() taking an Error ** parameter so it may be 5016a74c075SKevin Wolf * used with job_finish_sync() without the need for (rather nasty) function 5026a74c075SKevin Wolf * pointer casts there. */ 5036a74c075SKevin Wolf static void block_job_cancel_err(Job *job, Error **errp) 504345f9e1bSMax Reitz { 5056a74c075SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 5066a74c075SKevin Wolf assert(is_block_job(job)); 5076a74c075SKevin Wolf block_job_cancel(bjob, false); 508345f9e1bSMax Reitz } 509345f9e1bSMax Reitz 510345f9e1bSMax Reitz int block_job_cancel_sync(BlockJob *job) 511345f9e1bSMax Reitz { 5126a74c075SKevin Wolf return job_finish_sync(&job->job, &block_job_cancel_err, NULL); 513345f9e1bSMax Reitz } 514345f9e1bSMax Reitz 515a1a2af07SKevin Wolf void block_job_cancel_sync_all(void) 516a1a2af07SKevin Wolf { 517a1a2af07SKevin Wolf BlockJob *job; 518a1a2af07SKevin Wolf AioContext *aio_context; 519a1a2af07SKevin Wolf 520e7c1d78bSKevin Wolf while ((job = block_job_next(NULL))) { 521b6d2e599SKevin Wolf aio_context = blk_get_aio_context(job->blk); 522a1a2af07SKevin Wolf aio_context_acquire(aio_context); 523a1a2af07SKevin Wolf block_job_cancel_sync(job); 524a1a2af07SKevin Wolf aio_context_release(aio_context); 525a1a2af07SKevin Wolf } 526a1a2af07SKevin Wolf } 527a1a2af07SKevin Wolf 528345f9e1bSMax Reitz int block_job_complete_sync(BlockJob *job, Error **errp) 529345f9e1bSMax Reitz { 5306a74c075SKevin Wolf return job_finish_sync(&job->job, job_complete, errp); 531345f9e1bSMax Reitz } 532345f9e1bSMax Reitz 53305df8a6aSKevin Wolf void block_job_progress_update(BlockJob *job, uint64_t done) 53405df8a6aSKevin Wolf { 53505df8a6aSKevin Wolf job->offset += done; 53605df8a6aSKevin Wolf } 53705df8a6aSKevin Wolf 53805df8a6aSKevin Wolf void block_job_progress_set_remaining(BlockJob *job, uint64_t remaining) 53905df8a6aSKevin Wolf { 54005df8a6aSKevin Wolf job->len = job->offset + remaining; 54105df8a6aSKevin Wolf } 54205df8a6aSKevin Wolf 543559b935fSJohn Snow BlockJobInfo *block_job_query(BlockJob *job, Error **errp) 54430e628b7SPaolo Bonzini { 545559b935fSJohn Snow BlockJobInfo *info; 546559b935fSJohn Snow 547559b935fSJohn Snow if (block_job_is_internal(job)) { 548559b935fSJohn Snow error_setg(errp, "Cannot query QEMU internal jobs"); 549559b935fSJohn Snow return NULL; 550559b935fSJohn Snow } 551559b935fSJohn Snow info = g_new0(BlockJobInfo, 1); 552252291eaSKevin Wolf info->type = g_strdup(job_type_str(&job->job)); 55333e9e9bdSKevin Wolf info->device = g_strdup(job->job.id); 55430e628b7SPaolo Bonzini info->len = job->len; 555da01ff7fSKevin Wolf info->busy = atomic_read(&job->job.busy); 556da01ff7fSKevin Wolf info->paused = job->job.pause_count > 0; 55730e628b7SPaolo Bonzini info->offset = job->offset; 55830e628b7SPaolo Bonzini info->speed = job->speed; 55932c81a4aSPaolo Bonzini info->io_status = job->iostatus; 560ef6dbf1eSMax Reitz info->ready = job->ready; 561a50c2ab8SKevin Wolf info->status = job->job.status; 562bb02b65cSKevin Wolf info->auto_finalize = job->job.auto_finalize; 563bb02b65cSKevin Wolf info->auto_dismiss = job->job.auto_dismiss; 5644ad35181SKevin Wolf info->has_error = job->job.ret != 0; 5654ad35181SKevin Wolf info->error = job->job.ret ? g_strdup(strerror(-job->job.ret)) : NULL; 56630e628b7SPaolo Bonzini return info; 56730e628b7SPaolo Bonzini } 56832c81a4aSPaolo Bonzini 56932c81a4aSPaolo Bonzini static void block_job_iostatus_set_err(BlockJob *job, int error) 57032c81a4aSPaolo Bonzini { 57132c81a4aSPaolo Bonzini if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { 57232c81a4aSPaolo Bonzini job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : 57332c81a4aSPaolo Bonzini BLOCK_DEVICE_IO_STATUS_FAILED; 57432c81a4aSPaolo Bonzini } 57532c81a4aSPaolo Bonzini } 57632c81a4aSPaolo Bonzini 577139a9f02SKevin Wolf static void block_job_event_cancelled(Notifier *n, void *opaque) 578a66a2a36SPaolo Bonzini { 579139a9f02SKevin Wolf BlockJob *job = opaque; 580139a9f02SKevin Wolf 581559b935fSJohn Snow if (block_job_is_internal(job)) { 582559b935fSJohn Snow return; 583559b935fSJohn Snow } 584559b935fSJohn Snow 585252291eaSKevin Wolf qapi_event_send_block_job_cancelled(job_type(&job->job), 58633e9e9bdSKevin Wolf job->job.id, 587a66a2a36SPaolo Bonzini job->len, 588a66a2a36SPaolo Bonzini job->offset, 589bcada37bSWenchao Xia job->speed, 590bcada37bSWenchao Xia &error_abort); 591a66a2a36SPaolo Bonzini } 592a66a2a36SPaolo Bonzini 593139a9f02SKevin Wolf static void block_job_event_completed(Notifier *n, void *opaque) 594a66a2a36SPaolo Bonzini { 595139a9f02SKevin Wolf BlockJob *job = opaque; 596139a9f02SKevin Wolf const char *msg = NULL; 597139a9f02SKevin Wolf 598559b935fSJohn Snow if (block_job_is_internal(job)) { 599559b935fSJohn Snow return; 600559b935fSJohn Snow } 601559b935fSJohn Snow 6024ad35181SKevin Wolf if (job->job.ret < 0) { 6034ad35181SKevin Wolf msg = strerror(-job->job.ret); 604139a9f02SKevin Wolf } 605139a9f02SKevin Wolf 606252291eaSKevin Wolf qapi_event_send_block_job_completed(job_type(&job->job), 60733e9e9bdSKevin Wolf job->job.id, 608bcada37bSWenchao Xia job->len, 609bcada37bSWenchao Xia job->offset, 610bcada37bSWenchao Xia job->speed, 611bcada37bSWenchao Xia !!msg, 612bcada37bSWenchao Xia msg, 613bcada37bSWenchao Xia &error_abort); 614bcada37bSWenchao Xia } 615bcada37bSWenchao Xia 616139a9f02SKevin Wolf static void block_job_event_pending(Notifier *n, void *opaque) 6175f241594SJohn Snow { 618139a9f02SKevin Wolf BlockJob *job = opaque; 619139a9f02SKevin Wolf 6205d4f3769SKevin Wolf if (block_job_is_internal(job)) { 6215d4f3769SKevin Wolf return; 6225d4f3769SKevin Wolf } 6235d4f3769SKevin Wolf 624252291eaSKevin Wolf qapi_event_send_block_job_pending(job_type(&job->job), 62533e9e9bdSKevin Wolf job->job.id, 6265f241594SJohn Snow &error_abort); 6275f241594SJohn Snow } 6285f241594SJohn Snow 62988691b37SPaolo Bonzini /* 63088691b37SPaolo Bonzini * API for block job drivers and the block layer. These functions are 63188691b37SPaolo Bonzini * declared in blockjob_int.h. 63288691b37SPaolo Bonzini */ 63388691b37SPaolo Bonzini 63488691b37SPaolo Bonzini void *block_job_create(const char *job_id, const BlockJobDriver *driver, 635*62c9e416SKevin Wolf JobTxn *txn, BlockDriverState *bs, uint64_t perm, 63688691b37SPaolo Bonzini uint64_t shared_perm, int64_t speed, int flags, 63788691b37SPaolo Bonzini BlockCompletionFunc *cb, void *opaque, Error **errp) 63888691b37SPaolo Bonzini { 63988691b37SPaolo Bonzini BlockBackend *blk; 64088691b37SPaolo Bonzini BlockJob *job; 64188691b37SPaolo Bonzini int ret; 64288691b37SPaolo Bonzini 64388691b37SPaolo Bonzini if (bs->job) { 64488691b37SPaolo Bonzini error_setg(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); 64588691b37SPaolo Bonzini return NULL; 64688691b37SPaolo Bonzini } 64788691b37SPaolo Bonzini 648bb02b65cSKevin Wolf if (job_id == NULL && !(flags & JOB_INTERNAL)) { 64988691b37SPaolo Bonzini job_id = bdrv_get_device_name(bs); 65088691b37SPaolo Bonzini } 65188691b37SPaolo Bonzini 65288691b37SPaolo Bonzini blk = blk_new(perm, shared_perm); 65388691b37SPaolo Bonzini ret = blk_insert_bs(blk, bs, errp); 65488691b37SPaolo Bonzini if (ret < 0) { 65588691b37SPaolo Bonzini blk_unref(blk); 65688691b37SPaolo Bonzini return NULL; 65788691b37SPaolo Bonzini } 65888691b37SPaolo Bonzini 65908be6fe2SKevin Wolf job = job_create(job_id, &driver->job_driver, blk_get_aio_context(blk), 6604ad35181SKevin Wolf flags, cb, opaque, errp); 66133e9e9bdSKevin Wolf if (job == NULL) { 66233e9e9bdSKevin Wolf blk_unref(blk); 66333e9e9bdSKevin Wolf return NULL; 66433e9e9bdSKevin Wolf } 66533e9e9bdSKevin Wolf 666e7c1d78bSKevin Wolf assert(is_block_job(&job->job)); 66780fa2c75SKevin Wolf assert(job->job.driver->free == &block_job_free); 668b15de828SKevin Wolf assert(job->job.driver->user_resume == &block_job_user_resume); 669b69f777dSKevin Wolf assert(job->job.driver->drain == &block_job_drain); 670e7c1d78bSKevin Wolf 67188691b37SPaolo Bonzini job->driver = driver; 67288691b37SPaolo Bonzini job->blk = blk; 67388691b37SPaolo Bonzini 674139a9f02SKevin Wolf job->finalize_cancelled_notifier.notify = block_job_event_cancelled; 675139a9f02SKevin Wolf job->finalize_completed_notifier.notify = block_job_event_completed; 676139a9f02SKevin Wolf job->pending_notifier.notify = block_job_event_pending; 677139a9f02SKevin Wolf 678139a9f02SKevin Wolf notifier_list_add(&job->job.on_finalize_cancelled, 679139a9f02SKevin Wolf &job->finalize_cancelled_notifier); 680139a9f02SKevin Wolf notifier_list_add(&job->job.on_finalize_completed, 681139a9f02SKevin Wolf &job->finalize_completed_notifier); 682139a9f02SKevin Wolf notifier_list_add(&job->job.on_pending, &job->pending_notifier); 683139a9f02SKevin Wolf 68488691b37SPaolo Bonzini error_setg(&job->blocker, "block device is in use by block job: %s", 685252291eaSKevin Wolf job_type_str(&job->job)); 68688691b37SPaolo Bonzini block_job_add_bdrv(job, "main node", bs, 0, BLK_PERM_ALL, &error_abort); 68788691b37SPaolo Bonzini bs->job = job; 68888691b37SPaolo Bonzini 68988691b37SPaolo Bonzini bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); 69088691b37SPaolo Bonzini 69188691b37SPaolo Bonzini blk_add_aio_context_notifier(blk, block_job_attached_aio_context, 69288691b37SPaolo Bonzini block_job_detach_aio_context, job); 69388691b37SPaolo Bonzini 69488691b37SPaolo Bonzini /* Only set speed when necessary to avoid NotSupported error */ 69588691b37SPaolo Bonzini if (speed != 0) { 69688691b37SPaolo Bonzini Error *local_err = NULL; 69788691b37SPaolo Bonzini 69888691b37SPaolo Bonzini block_job_set_speed(job, speed, &local_err); 69988691b37SPaolo Bonzini if (local_err) { 7004ad35181SKevin Wolf job_early_fail(&job->job); 70188691b37SPaolo Bonzini error_propagate(errp, local_err); 70288691b37SPaolo Bonzini return NULL; 70388691b37SPaolo Bonzini } 70488691b37SPaolo Bonzini } 70575859b94SJohn Snow 70675859b94SJohn Snow /* Single jobs are modeled as single-job transactions for sake of 70775859b94SJohn Snow * consolidating the job management logic */ 70875859b94SJohn Snow if (!txn) { 70975859b94SJohn Snow txn = block_job_txn_new(); 71075859b94SJohn Snow block_job_txn_add_job(txn, job); 71175859b94SJohn Snow block_job_txn_unref(txn); 71275859b94SJohn Snow } else { 71375859b94SJohn Snow block_job_txn_add_job(txn, job); 71475859b94SJohn Snow } 71575859b94SJohn Snow 71688691b37SPaolo Bonzini return job; 71788691b37SPaolo Bonzini } 71888691b37SPaolo Bonzini 71988691b37SPaolo Bonzini void block_job_completed(BlockJob *job, int ret) 72088691b37SPaolo Bonzini { 721dbe5e6c1SKevin Wolf assert(job && job->txn && !job_is_completed(&job->job)); 72288691b37SPaolo Bonzini assert(blk_bs(job->blk)->job == job); 7234ad35181SKevin Wolf job->job.ret = ret; 7244ad35181SKevin Wolf job_update_rc(&job->job); 7254ad35181SKevin Wolf trace_block_job_completed(job, ret, job->job.ret); 7264ad35181SKevin Wolf if (job->job.ret) { 72788691b37SPaolo Bonzini block_job_completed_txn_abort(job); 72888691b37SPaolo Bonzini } else { 72988691b37SPaolo Bonzini block_job_completed_txn_success(job); 73088691b37SPaolo Bonzini } 73188691b37SPaolo Bonzini } 73288691b37SPaolo Bonzini 733aa9ef2e6SJohn Snow void block_job_enter(BlockJob *job) 734aa9ef2e6SJohn Snow { 735da01ff7fSKevin Wolf job_enter_cond(&job->job, NULL); 736aa9ef2e6SJohn Snow } 737aa9ef2e6SJohn Snow 73888691b37SPaolo Bonzini void block_job_yield(BlockJob *job) 73988691b37SPaolo Bonzini { 740da01ff7fSKevin Wolf assert(job->job.busy); 74188691b37SPaolo Bonzini 74288691b37SPaolo Bonzini /* Check cancellation *before* setting busy = false, too! */ 743daa7f2f9SKevin Wolf if (job_is_cancelled(&job->job)) { 74488691b37SPaolo Bonzini return; 74588691b37SPaolo Bonzini } 74688691b37SPaolo Bonzini 747da01ff7fSKevin Wolf if (!job_should_pause(&job->job)) { 748da01ff7fSKevin Wolf job_do_yield(&job->job, -1); 74988691b37SPaolo Bonzini } 75088691b37SPaolo Bonzini 751da01ff7fSKevin Wolf job_pause_point(&job->job); 75288691b37SPaolo Bonzini } 75388691b37SPaolo Bonzini 7542caf63a9SPaolo Bonzini void block_job_iostatus_reset(BlockJob *job) 7552caf63a9SPaolo Bonzini { 7564c241cf5SPaolo Bonzini if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { 7574c241cf5SPaolo Bonzini return; 7584c241cf5SPaolo Bonzini } 759b15de828SKevin Wolf assert(job->job.user_paused && job->job.pause_count > 0); 7602caf63a9SPaolo Bonzini job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; 7612caf63a9SPaolo Bonzini } 7622caf63a9SPaolo Bonzini 763b15de828SKevin Wolf void block_job_user_resume(Job *job) 764b15de828SKevin Wolf { 765b15de828SKevin Wolf BlockJob *bjob = container_of(job, BlockJob, job); 766b15de828SKevin Wolf block_job_iostatus_reset(bjob); 767b15de828SKevin Wolf } 768b15de828SKevin Wolf 769bcada37bSWenchao Xia void block_job_event_ready(BlockJob *job) 770bcada37bSWenchao Xia { 771a50c2ab8SKevin Wolf job_state_transition(&job->job, JOB_STATUS_READY); 772ef6dbf1eSMax Reitz job->ready = true; 773ef6dbf1eSMax Reitz 774559b935fSJohn Snow if (block_job_is_internal(job)) { 775559b935fSJohn Snow return; 776559b935fSJohn Snow } 777559b935fSJohn Snow 778252291eaSKevin Wolf qapi_event_send_block_job_ready(job_type(&job->job), 77933e9e9bdSKevin Wolf job->job.id, 780518848a2SMarkus Armbruster job->len, 781518848a2SMarkus Armbruster job->offset, 782518848a2SMarkus Armbruster job->speed, &error_abort); 783a66a2a36SPaolo Bonzini } 784a66a2a36SPaolo Bonzini 78581e254dcSKevin Wolf BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, 78632c81a4aSPaolo Bonzini int is_read, int error) 78732c81a4aSPaolo Bonzini { 78832c81a4aSPaolo Bonzini BlockErrorAction action; 78932c81a4aSPaolo Bonzini 79032c81a4aSPaolo Bonzini switch (on_err) { 79132c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_ENOSPC: 7928c398252SKevin Wolf case BLOCKDEV_ON_ERROR_AUTO: 793a589569fSWenchao Xia action = (error == ENOSPC) ? 794a589569fSWenchao Xia BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; 79532c81a4aSPaolo Bonzini break; 79632c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_STOP: 797a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_STOP; 79832c81a4aSPaolo Bonzini break; 79932c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_REPORT: 800a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_REPORT; 80132c81a4aSPaolo Bonzini break; 80232c81a4aSPaolo Bonzini case BLOCKDEV_ON_ERROR_IGNORE: 803a589569fSWenchao Xia action = BLOCK_ERROR_ACTION_IGNORE; 80432c81a4aSPaolo Bonzini break; 80532c81a4aSPaolo Bonzini default: 80632c81a4aSPaolo Bonzini abort(); 80732c81a4aSPaolo Bonzini } 808559b935fSJohn Snow if (!block_job_is_internal(job)) { 80933e9e9bdSKevin Wolf qapi_event_send_block_job_error(job->job.id, 8105a2d2cbdSWenchao Xia is_read ? IO_OPERATION_TYPE_READ : 8115a2d2cbdSWenchao Xia IO_OPERATION_TYPE_WRITE, 8125a2d2cbdSWenchao Xia action, &error_abort); 813559b935fSJohn Snow } 814a589569fSWenchao Xia if (action == BLOCK_ERROR_ACTION_STOP) { 815b15de828SKevin Wolf job_pause(&job->job); 816751ebd76SFam Zheng /* make the pause user visible, which will be resumed from QMP. */ 817b15de828SKevin Wolf job->job.user_paused = true; 81832c81a4aSPaolo Bonzini block_job_iostatus_set_err(job, error); 81932c81a4aSPaolo Bonzini } 82032c81a4aSPaolo Bonzini return action; 82132c81a4aSPaolo Bonzini } 822