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qemu: domain: Base block job interlocking on QEMU_CAPS_INCREMENTAL_BACKUP

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The QEMU_CAPS_INCREMENTAL_BACKUP will be enabled once all bits of the
incremental backup feature work as expected which means also properly
interacting with blockjobs and snapshots.

Thus we can allow blockjobs and snapshots if QEMU_CAPS_INCREMENTAL_BACKUP
is present even when checkpoints exist.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Peter Krempa 2019-09-26 14:08:11 +02:00
parent 9dde58e1c3
commit 6227d9806f
2 changed files with 4 additions and 7 deletions
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6
src/qemu/qemu_checkpoint.c
View File

@ -377,12 +377,6 @@ qemuCheckpointCreateXML(virDomainPtr domain,
update_current = false;
}
if (virDomainSnapshotObjListNum(vm->snapshots, NULL, 0) > 0) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("cannot create checkpoint while snapshot exists"));
return NULL;
}
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_INCREMENTAL_BACKUP)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("incremental backup is not supported yet"));

5
src/qemu/qemu_domain.c
View File

@ -15526,7 +15526,10 @@ qemuDomainDefHasManagedPR(virDomainObjPtr vm)
int
qemuDomainSupportsCheckpointsBlockjobs(virDomainObjPtr vm)
{
if (virDomainListCheckpoints(vm->checkpoints, NULL, NULL, NULL, 0) > 0) {
qemuDomainObjPrivatePtr priv = vm->privateData;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_INCREMENTAL_BACKUP) &&
virDomainListCheckpoints(vm->checkpoints, NULL, NULL, NULL, 0) > 0) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("cannot perform block operations while checkpoint exists"));
return -1;