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util: storage: Copy driver type when initializing chain element

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virStorageSourceInitChainElement initializes a new storage chain element
for use as a new disk source. If the new element doesn't contain the
driver name, copy it from the old source.

This fixes issue where a disk would forget the driver after a snapshot.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140984
This commit is contained in:
Peter Krempa 2014-09-16 12:55:32 +02:00
parent 98fd3b7f0b
commit 865421c94a
1 changed files with 4 additions and 0 deletions
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4
src/util/virstoragefile.c
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@ -1927,6 +1927,10 @@ virStorageSourceInitChainElement(virStorageSourcePtr newelem,
virStorageSourceSeclabelsCopy(newelem, old) < 0)
goto cleanup;
if (!newelem->driverName &&
VIR_STRDUP(newelem->driverName, old->driverName) < 0)
goto cleanup;
newelem->shared = old->shared;
newelem->readonly = old->readonly;