[libvirt PATCH 03/30] qemu_block: move qemuDomainBlockPivot out of qemu_driver

Move the code for finishing a job in the ready state to qemu_block.c. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; Reviewed-by: Peter Krempa <pkrempa(a)redhat.com&gt; --- src/qemu/qemu_block.c | 121 ++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_block.h | 5 ++ src/qemu/qemu_driver.c | 123 +---------------------------------------- 3 files changed, 127 insertions(+), 122 deletions(-) diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c index 4cca7555f3..721145fa42 100644 --- a/src/qemu/qemu_block.c +++ b/src/qemu/qemu_block.c @@ -3375,3 +3375,124 @@ qemuBlockCommit(virDomainObj *vm, return -1; } + + +/* Called while holding the VM job lock, to implement a block job + * abort with pivot; this updates the VM definition as appropriate, on + * either success or failure. */ +int +qemuBlockPivot(virDomainObj *vm, + qemuBlockJobData *job, + virDomainDiskDef *disk) +{ + g_autoptr(qemuBlockStorageSourceChainData) chainattachdata = NULL; + int ret = -1; + qemuDomainObjPrivate *priv = vm->privateData; + g_autoptr(virJSONValue) bitmapactions = NULL; + g_autoptr(virJSONValue) reopenactions = NULL; + int rc = 0; + + if (job->state != QEMU_BLOCKJOB_STATE_READY) { + virReportError(VIR_ERR_BLOCK_COPY_ACTIVE, + _("block job '%s' not ready for pivot yet"), + job->name); + return -1; + } + + switch ((qemuBlockJobType) job->type) { + case QEMU_BLOCKJOB_TYPE_NONE: + case QEMU_BLOCKJOB_TYPE_LAST: + virReportError(VIR_ERR_INTERNAL_ERROR, + _("invalid job type '%d'"), job->type); + return -1; + + case QEMU_BLOCKJOB_TYPE_PULL: + case QEMU_BLOCKJOB_TYPE_COMMIT: + case QEMU_BLOCKJOB_TYPE_BACKUP: + case QEMU_BLOCKJOB_TYPE_INTERNAL: + case QEMU_BLOCKJOB_TYPE_CREATE: + case QEMU_BLOCKJOB_TYPE_BROKEN: + virReportError(VIR_ERR_OPERATION_INVALID, + _("job type '%s' does not support pivot"), + qemuBlockjobTypeToString(job->type)); + return -1; + + case QEMU_BLOCKJOB_TYPE_COPY: + if (!job->jobflagsmissing) { + bool shallow = job->jobflags & VIR_DOMAIN_BLOCK_COPY_SHALLOW; + bool reuse = job->jobflags & VIR_DOMAIN_BLOCK_COPY_REUSE_EXT; + + bitmapactions = virJSONValueNewArray(); + + if (qemuMonitorTransactionBitmapAdd(bitmapactions, + disk->mirror->nodeformat, + "libvirt-tmp-activewrite", + false, + false, + 0) < 0) + return -1; + + /* Open and install the backing chain of 'mirror' late if we can use + * blockdev-snapshot to do it. This is to appease oVirt that wants + * to copy data into the backing chain while the top image is being + * copied shallow */ + if (reuse && shallow && + virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV_SNAPSHOT_ALLOW_WRITE_ONLY) && + virStorageSourceHasBacking(disk->mirror)) { + + if (!(chainattachdata = qemuBuildStorageSourceChainAttachPrepareBlockdev(disk->mirror->backingStore))) + return -1; + + reopenactions = virJSONValueNewArray(); + + if (qemuMonitorTransactionSnapshotBlockdev(reopenactions, + disk->mirror->backingStore->nodeformat, + disk->mirror->nodeformat)) + return -1; + } + + } + break; + + case QEMU_BLOCKJOB_TYPE_ACTIVE_COMMIT: + bitmapactions = virJSONValueNewArray(); + + if (qemuMonitorTransactionBitmapAdd(bitmapactions, + job->data.commit.base->nodeformat, + "libvirt-tmp-activewrite", + false, + false, + 0) < 0) + return -1; + + break; + } + + qemuDomainObjEnterMonitor(vm); + + if (chainattachdata) { + if ((rc = qemuBlockStorageSourceChainAttach(priv->mon, chainattachdata)) == 0) { + /* install backing images on success, or unplug them on failure */ + if ((rc = qemuMonitorTransaction(priv->mon, &reopenactions)) != 0) + qemuBlockStorageSourceChainDetach(priv->mon, chainattachdata); + } + } + + if (bitmapactions && rc == 0) + ignore_value(qemuMonitorTransaction(priv->mon, &bitmapactions)); + + if (rc == 0) + ret = qemuMonitorJobComplete(priv->mon, job->name); + + qemuDomainObjExitMonitor(vm); + + /* The pivot failed. The block job in QEMU remains in the synchronised state */ + if (ret < 0) + return -1; + + if (disk && disk->mirror) + disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_PIVOT; + job->state = QEMU_BLOCKJOB_STATE_PIVOTING; + + return ret; +} diff --git a/src/qemu/qemu_block.h b/src/qemu/qemu_block.h index 85b4805d89..52deb15a3d 100644 --- a/src/qemu/qemu_block.h +++ b/src/qemu/qemu_block.h @@ -285,3 +285,8 @@ qemuBlockCommit(virDomainObj *vm, virStorageSource *top_parent, unsigned long bandwidth, unsigned int flags); + +int +qemuBlockPivot(virDomainObj *vm, + qemuBlockJobData *job, + virDomainDiskDef *disk); diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 2f05da3d8c..d8db7188f7 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -14001,127 +14001,6 @@ qemuDomainOpenChannel(virDomainPtr dom, } -/* Called while holding the VM job lock, to implement a block job - * abort with pivot; this updates the VM definition as appropriate, on - * either success or failure. */ -static int -qemuDomainBlockPivot(virDomainObj *vm, - qemuBlockJobData *job, - virDomainDiskDef *disk) -{ - g_autoptr(qemuBlockStorageSourceChainData) chainattachdata = NULL; - int ret = -1; - qemuDomainObjPrivate *priv = vm->privateData; - g_autoptr(virJSONValue) bitmapactions = NULL; - g_autoptr(virJSONValue) reopenactions = NULL; - int rc = 0; - - if (job->state != QEMU_BLOCKJOB_STATE_READY) { - virReportError(VIR_ERR_BLOCK_COPY_ACTIVE, - _("block job '%s' not ready for pivot yet"), - job->name); - return -1; - } - - switch ((qemuBlockJobType) job->type) { - case QEMU_BLOCKJOB_TYPE_NONE: - case QEMU_BLOCKJOB_TYPE_LAST: - virReportError(VIR_ERR_INTERNAL_ERROR, - _("invalid job type '%d'"), job->type); - return -1; - - case QEMU_BLOCKJOB_TYPE_PULL: - case QEMU_BLOCKJOB_TYPE_COMMIT: - case QEMU_BLOCKJOB_TYPE_BACKUP: - case QEMU_BLOCKJOB_TYPE_INTERNAL: - case QEMU_BLOCKJOB_TYPE_CREATE: - case QEMU_BLOCKJOB_TYPE_BROKEN: - virReportError(VIR_ERR_OPERATION_INVALID, - _("job type '%s' does not support pivot"), - qemuBlockjobTypeToString(job->type)); - return -1; - - case QEMU_BLOCKJOB_TYPE_COPY: - if (!job->jobflagsmissing) { - bool shallow = job->jobflags & VIR_DOMAIN_BLOCK_COPY_SHALLOW; - bool reuse = job->jobflags & VIR_DOMAIN_BLOCK_COPY_REUSE_EXT; - - bitmapactions = virJSONValueNewArray(); - - if (qemuMonitorTransactionBitmapAdd(bitmapactions, - disk->mirror->nodeformat, - "libvirt-tmp-activewrite", - false, - false, - 0) < 0) - return -1; - - /* Open and install the backing chain of 'mirror' late if we can use - * blockdev-snapshot to do it. This is to appease oVirt that wants - * to copy data into the backing chain while the top image is being - * copied shallow */ - if (reuse && shallow && - virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV_SNAPSHOT_ALLOW_WRITE_ONLY) && - virStorageSourceHasBacking(disk->mirror)) { - - if (!(chainattachdata = qemuBuildStorageSourceChainAttachPrepareBlockdev(disk->mirror->backingStore))) - return -1; - - reopenactions = virJSONValueNewArray(); - - if (qemuMonitorTransactionSnapshotBlockdev(reopenactions, - disk->mirror->backingStore->nodeformat, - disk->mirror->nodeformat)) - return -1; - } - - } - break; - - case QEMU_BLOCKJOB_TYPE_ACTIVE_COMMIT: - bitmapactions = virJSONValueNewArray(); - - if (qemuMonitorTransactionBitmapAdd(bitmapactions, - job->data.commit.base->nodeformat, - "libvirt-tmp-activewrite", - false, - false, - 0) < 0) - return -1; - - break; - } - - qemuDomainObjEnterMonitor(vm); - - if (chainattachdata) { - if ((rc = qemuBlockStorageSourceChainAttach(priv->mon, chainattachdata)) == 0) { - /* install backing images on success, or unplug them on failure */ - if ((rc = qemuMonitorTransaction(priv->mon, &reopenactions)) != 0) - qemuBlockStorageSourceChainDetach(priv->mon, chainattachdata); - } - } - - if (bitmapactions && rc == 0) - ignore_value(qemuMonitorTransaction(priv->mon, &bitmapactions)); - - if (rc == 0) - ret = qemuMonitorJobComplete(priv->mon, job->name); - - qemuDomainObjExitMonitor(vm); - - /* The pivot failed. The block job in QEMU remains in the synchronised state */ - if (ret < 0) - return -1; - - if (disk && disk->mirror) - disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_PIVOT; - job->state = QEMU_BLOCKJOB_STATE_PIVOTING; - - return ret; -} - - /* bandwidth in MiB/s per public API. Caller must lock vm beforehand, * and not access it afterwards. */ static int @@ -14284,7 +14163,7 @@ qemuDomainBlockJobAbort(virDomainPtr dom, qemuBlockJobSyncBegin(job); if (pivot) { - if ((ret = qemuDomainBlockPivot(vm, job, disk)) < 0) + if ((ret = qemuBlockPivot(vm, job, disk)) < 0) goto endjob; } else { qemuDomainObjEnterMonitor(vm); -- 2.38.1