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qemu: don't check for backing chains for formats w/o snapshot support

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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1019926
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=868673

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Martin Kletzander 2014-04-16 17:31:50 +02:00
parent 1445f34b62
commit 9556681388
1 changed files with 11 additions and 1 deletions
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12
src/qemu/qemu_domain.c
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@ -2268,8 +2268,18 @@ qemuDomainCheckDiskPresence(virQEMUDriverPtr driver,
VIR_DEBUG("Checking for disk presence");
for (i = vm->def->ndisks; i > 0; i--) {
disk = vm->def->disks[i - 1];
const char *path = virDomainDiskGetSource(disk);
enum virStorageFileFormat format = virDomainDiskGetFormat(disk);
if (!virDomainDiskGetSource(disk))
if (!path)
continue;
/* There is no need to check the backing chain for disks
* without backing support, the fact that the file exists is
* more than enough */
if (format >= VIR_STORAGE_FILE_NONE &&
format < VIR_STORAGE_FILE_BACKING &&
virFileExists(path))
continue;
if (qemuDomainDetermineDiskChain(driver, vm, disk, false) >= 0 &&