1st step: increase/resize disque from GUI console
2nd step : Extend physical drive partition
check free space : $sudo fdisk -l
$growpart /dev/sda 3 (Extend physical drive partition )
$pvdisplay ( See phisical drive )
$sudo pvresize /dev/sda3 (Instruct LVM that disk size has changed)
$ pvdisplay ( check physical drive if has changed )
[U]3rd step: Extend Logical volume [/U]
$ lvdisplay (# View starting LV)
$ sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv ( # Resize LV)
$ lvdisplay (# View changed LV)
4th step : Resize Filesystem
$ resize2fs /dev/ubuntu-vg/ubuntu-lv
$ fdisk -l (# Confirm results)
credit: https://forum.proxmox.com/threads/resize-ubuntu-vm-disk.117810/
