Resize/Grow/Shrink LVM disk Proxmox

To resize a LVM disk you can start by listing the disks with the following command:

lvdisplay

You should get an ouput similar to that shown in the following image:

What you want to take note of is the LV Path, as this will be used in the lvresize command.

To increase or grow the disk size you can run the following command:

lvresize --size +4T /dev/drive/vm-101-disk-1

This will increase the disk size by 4TB. If you want to increase the disk size in GB simply use G instead of T.

To decrease or shrink the disk size you can run the following command:

lvresize --size -4T /dev/drive/vm-101-disk-1