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Re: [libvirt] [PATCH] util: storage: Copy driver type when initializing chain element

On Tue, Sep 16, 2014 at 01:35:22PM +0200, Peter Krempa wrote:
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
src/util/virstoragefile.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 13056a7..960aa23 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -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;




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