... > -Add LVM group > -Fill Storage name: test_vg > -Base Storage: Existing volume groups (no other option) > -Volume Group Name: pve (135 GB) (no other option !!! ) See this howto, looks you missed these steps. http://pve.proxmox.com/wiki/Storage_Model#Use_local_devices_.28like_.2Fdev.2Fsd...2F.29 br, martin