While deploying Vm with DataDisk in LXC, if the rbd image mapping on the host fails, deploy Vm should fail

plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java

@@ -4030,6 +4030,8 @@ public class LibvirtComputingResource extends ServerResourceBase implements Serv
                             diskdef.defBlockBasedDisk(device, devId, DiskDef.diskBus.VIRTIO);
                             diskdef.setQemuDriver(false);
                             vm.getDevices().addDevice(diskdef);
+                        } else {
+                            throw new InternalErrorException("Error while mapping RBD device on host");
                         }
                     }
                 }