Virtual machine resize Disk Volume Group

KVM
[crayon-6684c6a137ab4111983225/]
Important for us
[crayon-6684c6a137abc136704407/]
[crayon-6684c6a137abf464501245/]
**>> Free PE / Size 5120 / 20.00 GiB

So Firstly we are extending volume group
# lvextend -l +5120 /dev/telekom_kutayzorlu_com-vg/root

After Resize to see Action in Disk Size Now
# resize2fs /dev/telekom_kutayzorlu_com-vg/root

If you are using XFS file format it will give error  so use that 
# xfs_growfs /dev/telekom_kutayzorlu_com-vg/root
[crayon-6684c6a137ac2397308528/]