// There is nothing else we can do. Hope that UnmountDevice will be re-tried shortly.
				klog.Errorf(deviceToDetach.GenerateErrorDetailed("UnmountDevice.MarkDeviceAsUncertain failed", markDeviceUncertainErr).Error())
			}

			// On failure, return error. Caller will log and retry.
			eventErr, detailedErr := deviceToDetach.GenerateError("UnmountDevice failed", unmountDeviceErr)