From fd79f6b6020ae653c4f2d1f6222685becb792b77 Mon Sep 17 00:00:00 2001
From: Koushik Das <koushik.das@citrix.com>
Date: Thu, 30 May 2013 17:20:44 +0530
Subject: [PATCH] CLOUDSTACK-2276: NPE while attaching the volume to the
 instance which is created from ROOT Disk Snapshot The NPE comes as the
 storage pool id is set to null in the in-memory volume object which is not in
 sync with the db. entry. Reloading the volume from db. fixes the issue

---
 server/src/com/cloud/storage/VolumeManagerImpl.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/server/src/com/cloud/storage/VolumeManagerImpl.java b/server/src/com/cloud/storage/VolumeManagerImpl.java
index aedb68e1316..c20625257fe 100644
--- a/server/src/com/cloud/storage/VolumeManagerImpl.java
+++ b/server/src/com/cloud/storage/VolumeManagerImpl.java
@@ -1725,6 +1725,8 @@ public class VolumeManagerImpl extends ManagerBase implements VolumeManager {
             }
         }
 
+        // reload the volume from db
+        volumeOnPrimaryStorage = volFactory.getVolume(volumeOnPrimaryStorage.getId());
         boolean moveVolumeNeeded = needMoveVolume(rootVolumeOfVm, volumeOnPrimaryStorage);
 
         if (moveVolumeNeeded) {