diff --git a/server/src/com/cloud/server/StatsCollector.java b/server/src/com/cloud/server/StatsCollector.java
index 699c3c0f55c..45fc43e7d59 100755
--- a/server/src/com/cloud/server/StatsCollector.java
+++ b/server/src/com/cloud/server/StatsCollector.java
@@ -438,7 +438,10 @@ public class StatsCollector extends ManagerBase implements ComponentMethodInterc
                                 for (VmDiskStatsEntry vmDiskStat:vmDiskStats) {
                                     SearchCriteria<VolumeVO> sc_volume = _volsDao.createSearchCriteria();
                                     sc_volume.addAnd("path", SearchCriteria.Op.EQ, vmDiskStat.getPath());
-                                    VolumeVO volume = _volsDao.search(sc_volume, null).get(0);
+                                    List<VolumeVO> volumes = _volsDao.search(sc_volume, null);
+                                    if ((volumes == null) || (volumes.size() == 0))
+                                        break;
+                                    VolumeVO volume = volumes.get(0);
                                     VmDiskStatisticsVO previousVmDiskStats = _vmDiskStatsDao.findBy(userVm.getAccountId(), userVm.getDataCenterId(), vmId, volume.getId());
                                     VmDiskStatisticsVO vmDiskStat_lock = _vmDiskStatsDao.lock(userVm.getAccountId(), userVm.getDataCenterId(), vmId, volume.getId());
         
diff --git a/server/src/com/cloud/vm/UserVmManagerImpl.java b/server/src/com/cloud/vm/UserVmManagerImpl.java
index 09afe321823..485a3452d22 100755
--- a/server/src/com/cloud/vm/UserVmManagerImpl.java
+++ b/server/src/com/cloud/vm/UserVmManagerImpl.java
@@ -3581,7 +3581,10 @@ public class UserVmManagerImpl extends ManagerBase implements UserVmManager, Vir
                         for (VmDiskStatsEntry vmDiskStat:vmDiskStats) {
                             SearchCriteria<VolumeVO> sc_volume = _volsDao.createSearchCriteria();
                             sc_volume.addAnd("path", SearchCriteria.Op.EQ, vmDiskStat.getPath());
-                            VolumeVO volume = _volsDao.search(sc_volume, null).get(0);
+                            List<VolumeVO> volumes = _volsDao.search(sc_volume, null);
+                            if ((volumes == null) || (volumes.size() == 0))
+                                break;
+                            VolumeVO volume = volumes.get(0);
                             VmDiskStatisticsVO previousVmDiskStats = _vmDiskStatsDao.findBy(userVm.getAccountId(), userVm.getDataCenterId(), userVm.getId(), volume.getId());
                             VmDiskStatisticsVO vmDiskStat_lock = _vmDiskStatsDao.lock(userVm.getAccountId(), userVm.getDataCenterId(), userVm.getId(), volume.getId());