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qemu: Always re-detect backing chain

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Since 363e9a68 we track backing chain metadata when creating snapshots
the right way even for the inactive configuration. As we did not yet
update other code paths that modify the backing chain (blockpull) the
newDef backing chain gets out of sync.

After stopping of a VM the new definition gets copied to the next start
one. The new VM then has incorrect backing chain info. This patch
switches the backing chain detector to always purge the existing backing
chain and forces re-detection to avoid this issue until we'll have full
backing chain tracking support.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1144922
This commit is contained in:
Peter Krempa 2014-09-25 17:30:28 +02:00
parent f06a6257d5
commit fe7ef7b112
1 changed files with 1 additions and 1 deletions
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2
src/qemu/qemu_domain.c
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@ -2540,7 +2540,7 @@ qemuDomainCheckDiskPresence(virQEMUDriverPtr driver,
virFileExists(virDomainDiskGetSource(disk)))
continue;
if (qemuDomainDetermineDiskChain(driver, vm, disk, false, true) >= 0)
if (qemuDomainDetermineDiskChain(driver, vm, disk, true, true) >= 0)
continue;
if (disk->startupPolicy &&