Add 1G to a LVM on VMware

1. update disk1 to 5G from 4G in vcenter
2. echo 1 > /sys/block/sda/device/rescan
3. fdisk /dev/sda n,p,3,enter, w
4. partprobe
5. pvcreate /dev/sda3
6. vgextend VolGroup00 /dev/sda3
7. lvextend /dev/VolGroup00/LogVo100 -L +920M
8. e2fsck /dev/VolGroup00/LogVo100
9. resize2fs /dev/VolGroup00/LogVo100