func (s *storageCeph) getRBDFilesystem() string {
	if s.volume.Config["block.filesystem"] != "" {
		return s.volume.Config["block.filesystem"]
	}

	if s.pool.Config["volume.block.filesystem"] != "" {
		return s.pool.Config["volume.block.filesystem"]
	}

	return "ext4"
}
func (s *storageCeph) getRBDFilesystem() string {
	if s.volume.Config["block.filesystem"] != "" {
		return s.volume.Config["block.filesystem"]
	}

	if s.pool.Config["volume.block.filesystem"] != "" {
		return s.pool.Config["volume.block.filesystem"]
	}

	return "ext4"
}
// getRBDFilesystem returns the filesystem the RBD storage volume is supposed to
// be created with