Backup the system and data before proceeding
Follow the below steps for upgrading disk on Linux server:
1: Login into the server.
2: Run fdisk /dev/sda
a) Enter “P” to check the disk partitions.
b) Enter “d” for deleting the partition
Enter your Partition number(you need to upgrade)
c) Enter “n” for creating a new partition
d) Enter “p” and select the primary partition not select “e”
e) Enter “W” and exit
3: Type “reboot” and reboot the server ( Reload the partition table.partprobe /dev/sda for not to restart the server )
4: Login to the server again and run xfs_info /dev/sda3
5: Then run xfs_growfs /dev/sda3
6: Check the disk space again(using df -h), you can see it as upgraded.
PLease note : sd3 is the partion number you wish to upgrade(this may varies), also, use this documentation only for the system where last partion is the /.