Resize disks of a VM

Source: https://pve.proxmox.com/wiki/Resize_disks

Extend the disk in the web UI
Run partprobe on the machine
Run parted

print to show current layout. This will ask you to fix the GPT. Say “Fix”
resizepart 1 – 1 being the partition ID
It asks for the end. Type 100%

Resize the filesystem: resize2fs /dev/vda1