Create snapshot for this logical volume.

		:param snapshot_size: size of newly created snapshot volume. This size is a fraction of the source \
		logical volume space (of this logical volume)
		:param snapshot_suffix: suffix for logical volume name (base part is the same as the original volume \
		name)

		:return: WLogicalVolume

def create_snapshot(self, snapshot_size, snapshot_suffix):
		""" Create snapshot for this logical volume.

		:param snapshot_size: size of newly created snapshot volume. This size is a fraction of the source \
		logical volume space (of this logical volume)
		:param snapshot_suffix: suffix for logical volume name (base part is the same as the original volume \
		name)

		:return: WLogicalVolume
		"""
		size_extent = math.ceil(self.extents_count() * snapshot_size)
		size_kb = self.volume_group().extent_size() * size_extent
		snapshot_name = self.volume_name() + snapshot_suffix

		lvcreate_cmd = ['sudo'] if self.lvm_command().sudo() is True else []

		lvcreate_cmd.extend([
			'lvcreate', '-L', '%iK' % size_kb, '-s', '-n', snapshot_name, '-p', 'r', self.volume_path()
		])
		subprocess.check_output(lvcreate_cmd, timeout=self.__class__.__lvm_snapshot_create_cmd_timeout__)
		return WLogicalVolume(self.volume_path() + snapshot_suffix, sudo=self.lvm_command().sudo())