Well, without paying attention I accidently increased the disk size of a disk to 80gb from 32gb. It wasn’t that the size was incorrect, I was doing this to the wrong VM.
To fix this I tried a few things, but unfortunately from the GUI I was unable to fix the problem. This meant I had to logon to the proxmox server to fix it.
From the command line this looked like:
# Finding the disk
lvdisplay | grep "LV Path\|LV Size"
# Resizing the disk down to 32GB (its original size)
lvreduce -L 32G /dev/pve/vm-103-disk-1
# Vim the node conf editing the disk size to the now 32gb drive
So it turns out I got luck on the two I used lvreduce on. On the third server I attempted this on, things did not pan out so well. But, since this server was just a piece of cattle, I deleted it, reprovisioned another server and re-installed the tools.
Adding Disk Space
Expand the disk in Proxmox first, and then from there try gparted to expand/resize the disk.
Then once the logical volume is expanded try the following:
# To display the logical volume
# To resize the logical volume
lvresize -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv