Lvs

lvs is the LVM command to show all logical volumes available.

Example
lvs -a LV  VG     Attr   LSize   Origin Snap%  Move Log Copy% home system -wi-ao 100.00G opt system -wi-ao  10.00G tmp system -wi-ao  10.00G usr system -wi-ao  10.00G var system -wi-ao  10.00G