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qemu: fix broken handling of shallow flag in qemuDomainBlockCopyCommon

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Commit 16ca234b56 refactored how the 'shallow' and 'reuse' flags
are accessed but neglected to fix the clearing of 'shallow' in case when
the disk has no backing chain. This means that we'd request a shallow
copy even without backing chain and also a few checks would work wrong.

Fix it by using the extracted variable everywhere.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa
2019-08-07 17:00:02 +02:00
parent 32bd092b49
commit 49ea62e51d
1 changed files with 4 additions and 6 deletions
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10
src/qemu/qemu_driver.c
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@@ -18299,12 +18299,9 @@ qemuDomainBlockCopyValidateMirror(virStorageSourcePtr mirror,
*/
static int
qemuDomainBlockCopyCommonValidateUserMirrorBackingStore(virStorageSourcePtr mirror,
unsigned int flags,
bool shallow,
bool blockdev)
{
/* note that if original disk does not have backing chain, shallow is cleared */
bool shallow = flags & VIR_DOMAIN_BLOCK_COPY_SHALLOW;
if (!virStorageSourceHasBacking(mirror)) {
/* for deep copy there won't be backing chain so we can terminate it */
if (!mirror->backingStore &&
@@ -18417,9 +18414,10 @@ qemuDomainBlockCopyCommon(virDomainObjPtr vm,
/* clear the _SHALLOW flag if there is only one layer */
if (!virStorageSourceHasBacking(disk->src))
flags &= ~VIR_DOMAIN_BLOCK_COPY_SHALLOW;
mirror_shallow = false;
if (qemuDomainBlockCopyCommonValidateUserMirrorBackingStore(mirror, flags,
if (qemuDomainBlockCopyCommonValidateUserMirrorBackingStore(mirror,
mirror_shallow,
blockdev) < 0)
goto endjob;