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qemuDomainBlockPivot: Copy bitmaps backing checkpoints for virDomainBlockCopy

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Use qemuBlockBitmapsHandleBlockcopy to calculate bitmaps to copy over
for a block-copy job.

We copy them when pivoting to the new image as at that point we are
certain that we don't dirty any bitmap unnecessarily.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2020-01-30 08:50:05 +01:00
parent 9b13af73ac
commit 54030892f5
1 changed files with 25 additions and 3 deletions
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28
src/qemu/qemu_driver.c
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@ -17572,6 +17572,7 @@ qemuDomainBlockPivot(virQEMUDriverPtr driver,
int ret = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
bool blockdev = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV);
g_autoptr(virJSONValue) actions = NULL;
switch ((qemuBlockJobType) job->type) {
case QEMU_BLOCKJOB_TYPE_NONE:
@ -17592,6 +17593,20 @@ qemuDomainBlockPivot(virQEMUDriverPtr driver,
return -1;
case QEMU_BLOCKJOB_TYPE_COPY:
if (blockdev && !job->jobflagsmissing) {
g_autoptr(virHashTable) blockNamedNodeData = NULL;
bool shallow = job->jobflags & VIR_DOMAIN_BLOCK_COPY_SHALLOW;
if (!(blockNamedNodeData = qemuBlockGetNamedNodeData(vm, QEMU_ASYNC_JOB_NONE)))
return -1;
if (qemuBlockBitmapsHandleBlockcopy(disk->src, disk->mirror,
blockNamedNodeData,
shallow, &actions) < 0)
return -1;
}
break;
case QEMU_BLOCKJOB_TYPE_ACTIVE_COMMIT:
break;
}
@ -17604,10 +17619,17 @@ qemuDomainBlockPivot(virQEMUDriverPtr driver,
}
qemuDomainObjEnterMonitor(driver, vm);
if (blockdev)
ret = qemuMonitorJobComplete(priv->mon, job->name);
else
if (blockdev) {
int rc = 0;
if (actions)
rc = qemuMonitorTransaction(priv->mon, &actions);
if (rc == 0)
ret = qemuMonitorJobComplete(priv->mon, job->name);
} else {
ret = qemuMonitorDrivePivot(priv->mon, job->name);
}
if (qemuDomainObjExitMonitor(driver, vm) < 0)
return -1;