From 350e8938cf0c1f673aa115fd2fc073e47b9a3403 Mon Sep 17 00:00:00 2001
From: Edison Su <sudison@gmail.com>
Date: Fri, 27 Sep 2013 16:09:22 -0700
Subject: [PATCH] CLOUDSTACK-4754: it's a race condition: delete template, and
 deploy vm from the template happened at the same time,

---
 .../cloudstack/storage/motion/DataMotionServiceImpl.java       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/engine/storage/datamotion/src/org/apache/cloudstack/storage/motion/DataMotionServiceImpl.java b/engine/storage/datamotion/src/org/apache/cloudstack/storage/motion/DataMotionServiceImpl.java
index c1cbdc772cc..9f0f5311a28 100644
--- a/engine/storage/datamotion/src/org/apache/cloudstack/storage/motion/DataMotionServiceImpl.java
+++ b/engine/storage/datamotion/src/org/apache/cloudstack/storage/motion/DataMotionServiceImpl.java
@@ -41,6 +41,9 @@ public class DataMotionServiceImpl implements DataMotionService {
 
     @Override
     public void copyAsync(DataObject srcData, DataObject destData, AsyncCompletionCallback<CopyCommandResult> callback) {
+        if (srcData.getDataStore() == null || destData.getDataStore() == null) {
+            throw new CloudRuntimeException("can't find data store");
+        }
 
         if (srcData.getDataStore().getDriver().canCopy(srcData, destData)) {
             srcData.getDataStore().getDriver().copyAsync(srcData, destData, callback);