/dev/sdd1 to the existing volume group myvg.
[root@tng3-1 ~]#vgextend myvg /dev/sdd1Volume group "myvg" successfully extended [root@tng3-1]#pvs -o+pv_usedPV VG Fmt Attr PSize PFree Used /dev/sda1 myvg lvm2 a- 17.15G 7.15G 10.00G /dev/sdb1 myvg lvm2 a- 17.15G 15.15G 2.00G /dev/sdc1 myvg lvm2 a- 17.15G 15.15G 2.00G /dev/sdd1 myvg lvm2 a- 17.15G 17.15G 0