How to Extend the partition after extending it from VMware / SAN

In this example, we are assuming that the disk is /dev/sda and the partition is /dev/sda3 mounted on /.

Rescan the disk after extending the disk from VMware or SAN.
```
 echo 1 > /sys/block/sda/device/rescan
```
Now fisk -l /dev/sda will show the disks new size.
Now we have to extend the partition, for that run fdisk on the disk and re-create the parition.
```
fdisk /dev/sda
```
Press p to print the partion table, and note your partion id for / (In our case its 3)
press d to delete the partition
Enter the number 3 and your partion is deleted.
Now press c to create a new partion and select 3 again, then just presss ENTER and ENTER when it as for starting and ending cylindar number.
Press p again to see the parion list and press w to write the partition table.
Now reboot your system
After rebooting, run xfsgrow /
Now run df -h and your partion will be extended.