func cephRBDSnapshotDelete(clusterName string, poolName string,
	volumeName string, volumeType string, snapshotName string,
	userName string) error {
	_, err := shared.RunCommand(
		"rbd",
		"--id", userName,
		"--cluster", clusterName,
		"--pool", poolName,
		"snap",
		"rm",
		fmt.Sprintf("%s_%s@%s", volumeType, volumeName, snapshotName))
	if err != nil {
		return err
	}

	return nil
}
func cephRBDSnapshotDelete(clusterName string, poolName string,
	volumeName string, volumeType string, snapshotName string,
	userName string) error {
	_, err := shared.RunCommand(
		"rbd",
		"--id", userName,
		"--cluster", clusterName,
		"--pool", poolName,
		"snap",
		"rm",
		fmt.Sprintf("%s_%s@%s", volumeType, volumeName, snapshotName))
	if err != nil {
		return err
	}

	return nil
}
// cephRBDSnapshotDelete deletes an RBD snapshot
// This requires that the snapshot does not have any clones and is unmapped and
// unprotected.