Just self memo
# Added new physical partition /dev/sda3
# create a physical volume out of it
$ pvcreate /dev/sda3
# Now, add it to the volume group
#that my logical volume is on
$ vgextend VolGroup00 /dev/sda3
# Now that the volume group has more
# disk space, the logical volume can grow
$ lvextend -L+11G /dev/VolGroup00/LogVol00
# Ok, last of all, I want to filesystem to
# recognize that more space is available
$ fsadm resize /dev/VolGroup00/LogVol00
# sweet, I have more space now
$ df -h