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[libvirt] [PATCHv2 07/16] storage: don't probe non-files



Backing chains can end on a network protocol, such as nbd:xxx; we
should not attempt to probe the file system in this case.

* src/storage/storage_backend_fs.c (virStorageBackendProbeTarget):
Only probe files.
---
 src/storage/storage_backend_fs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/storage/storage_backend_fs.c b/src/storage/storage_backend_fs.c
index 1e48a51..db19b87 100644
--- a/src/storage/storage_backend_fs.c
+++ b/src/storage/storage_backend_fs.c
@@ -108,7 +108,8 @@ virStorageBackendProbeTarget(virStorageVolTargetPtr target,
     if (meta->backingStore) {
         *backingStore = meta->backingStore;
         meta->backingStore = NULL;
-        if (meta->backingStoreFormat == VIR_STORAGE_FILE_AUTO) {
+        if (meta->backingStoreFormat == VIR_STORAGE_FILE_AUTO &&
+            meta->backingStoreIsFile) {
             if ((ret = virStorageFileProbeFormat(*backingStore)) < 0) {
                 /* If the backing file is currently unavailable, only log an error,
                  * but continue. Returning -1 here would disable the whole storage
-- 
1.7.11.7


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