Calculating free PE’s
vgdisplay -v <vgname> e.g. vg02
# vgdisplay -v vg02
— Volume groups —
VG Name /dev/vg02
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 35004
VGDA 2
PE Size (Mbytes) 8 —> 1 PE is 8 MB
Total PE 17499
Alloc PE 17400
Free PE 99 —> free PE is 99
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
8×99 = means 792 MB of space can be extended.