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virStorageSourceNewFromBacking: Also transfer the format

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When we create the new virStorageSource from the definitions stored in
the parent we should also use the 'backingStoreRawFormat' field to
populate the format.

Callers which use virStorageSourceNewFromBacking are also fixed to stop
setting the format manually.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2020-02-21 12:51:35 +01:00
parent 62539c5f7d
commit 264b79c63a
2 changed files with 2 additions and 6 deletions
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5
src/storage/storage_util.c
View File

@ -3329,7 +3329,6 @@ static int
storageBackendProbeTarget(virStorageSourcePtr target,
virStorageEncryptionPtr *encryption)
{
int backingStoreFormat;
int rc;
struct stat sb;
g_autoptr(virStorageSource) meta = NULL;
@ -3360,15 +3359,13 @@ storageBackendProbeTarget(virStorageSourcePtr target,
if (!(meta = virStorageFileGetMetadataFromFD(target->path,
fd,
VIR_STORAGE_FILE_AUTO,
&backingStoreFormat)))
NULL)))
return -1;
if (meta->backingStoreRaw) {
if (virStorageSourceNewFromBacking(meta, &target->backingStore) < 0)
return -1;
target->backingStore->format = backingStoreFormat;
/* XXX: Remote storage doesn't play nicely with volumes backed by
* remote storage. To avoid trouble, just fake the backing store is RAW
* and put the string from the metadata as the path of the target. */

3
src/util/virstoragefile.c
View File

@ -3824,6 +3824,7 @@ virStorageSourceNewFromBacking(virStorageSourcePtr parent,
backing)) < 0)
return rc;
(*backing)->format = parent->backingStoreRawFormat;
(*backing)->readonly = true;
return rc;
}
@ -5028,8 +5029,6 @@ virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
if (rv == 1)
return 0;
backingStore->format = src->backingStoreRawFormat;
if (backingStore->format == VIR_STORAGE_FILE_AUTO) {
/* Assuming the backing store to be raw can lead to failures. We do
* it only when we must not report an error to prevent losing VMs.