VolumeTO rootVol = getVolume(vmSpec, Volume.Type.ROOT);
String patchName = vmName + "-patchdisk";
KVMStoragePool pool = _storagePoolMgr.getStoragePool(rootVol.getPoolUuid());
String patchDiskPath = pool.getLocalPath() + "/" + patchName;
List<KVMPhysicalDisk> phyDisks = pool.listPhysicalDisks();
boolean foundDisk = false;
for (KVMPhysicalDisk phyDisk : phyDisks) {
if (phyDisk.getPath().equals(patchDiskPath)) {
foundDisk = true;