Pearl1594 commented on a change in pull request #4551:
URL: https://github.com/apache/cloudstack/pull/4551#discussion_r604615830



##########
File path: 
engine/storage/datamotion/src/main/java/org/apache/cloudstack/storage/motion/AncientDataMotionStrategy.java
##########
@@ -392,15 +405,16 @@ protected Answer copyVolumeBetweenPools(DataObject 
srcData, DataObject destData)
                     return answer;
                 }
             } catch (Exception e) {
-                if (imageStore.exists(objOnImageStore)) {
+                if (objOnImageStore != null) {

Review comment:
       imagestore.exists() eventually calls 
volumeDataStoreDao.findByStoreVolume(...) for volumes, which in case of 
multiple entries could possibly return the wrong record




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