Pvs

pvs is the command to show formatted information about physical volumes as used in LVM. The command is located in /sbin.

Example
PV        VG   Fmt  Attr PSize   PFree /dev/md124 mass lvm2 a-  931.51G  31.51G /dev/md126 raid lvm2 a-  125.00G   2.50G /dev/md127 raid lvm2 a-  335.75G 305.75G /dev/sdb1 bck  lvm2 a-   931.51G 520.00M
 * 1) pvs