var durationForStuckMount … var _ … func getUniqueVolumeName(pod *v1.Pod, driverName string) string { … } func waitForVolumesNotInUse(ctx context.Context, client clientset.Interface, nodeName, volumeName string) error { … } func waitForVolumesAttached(ctx context.Context, client clientset.Interface, nodeName, volumeName string) error { … } func waitForVolumesInUse(ctx context.Context, client clientset.Interface, nodeName, volumeName string) error { … } func getFlexVolumePod(volumeSource v1.VolumeSource, nodeName string) *v1.Pod { … }