I recreated a proxmox server that was in a cluster. I restored all the vm's on a zfs pool, the same pool that proxmox is installed on. Then I made the error of rejoining the cluster after I restored all the VM's. I went to the datacenter > storage > and added the zfs pool and I'm restoring the VM's but despite deleting the files in /dev/rpool/data and /dev/rpool/ the space still wasn't reclaimed. Is there another way to get back the space from the old VM's?