1.) #vgdisplay ( Identify the proper vg for particular File system )
2.) #PE (Check total number of free PE )
3.) #lvextend -L +1G <file system>
4.) #resize2fs <file system>
5.) df -h
use below link for LVM Baisc idea:
http://www.redhat.com/magazine/009jul05/features/lvm2/
