fix snapshot physical size for primary storage (apache#11448)

Author: JoaoJandre

engine/storage/snapshot/src/main/java/org/apache/cloudstack/storage/snapshot/SnapshotObject.java

@@ -172,10 +172,15 @@ public boolean isRevertable() {
     @Override
     public long getPhysicalSize() {
         long physicalSize = 0;
-        SnapshotDataStoreVO snapshotStore = snapshotStoreDao.findByStoreSnapshot(DataStoreRole.Image, store.getId(), snapshot.getId());
-        if (snapshotStore != null) {
-            physicalSize = snapshotStore.getPhysicalSize();
+        for (DataStoreRole role : List.of(DataStoreRole.Image, DataStoreRole.Primary)) {
+            logger.trace("Retrieving snapshot [{}] size from {} storage.", snapshot.getUuid(), role);
+            SnapshotDataStoreVO snapshotStore = snapshotStoreDao.findByStoreSnapshot(role, store.getId(), snapshot.getId());
+            if (snapshotStore != null) {
+                return snapshotStore.getPhysicalSize();
+            }
+            logger.trace("Snapshot [{}] size not found on {} storage.", snapshot.getUuid(), role);
         }
+        logger.warn("Snapshot [{}] reference not found in any storage. There may be an inconsistency on the database.", snapshot.getUuid());
         return physicalSize;
     }