In my last post I showed how to recover space from disk images backed by sparse files. As a small addition I’d like to also show how to do the same with a guest disk image that is backed by a thinly provisioned Logical Volume. First things first, I modified the /etc/lvm/lvm.conf file to have the issue_discards = 1 option set. I’m not 100% sure this is needed but I did it at the time so I wanted to include it here.
