[ovirt-users] Expand hosted-engine disk?

I'm running oVirt 3.6.2 on CentOS 7.2, all up to date, with a hosted engine. The storage for the engine is on a dedicated iSCSI LUN. When I created the LUN, I made it 40G so I'd have a little more disk space for the engine (logs, ISOs, etc.), but then forgot to make the VM image larger than the default 25G. Is there an easy way to extend the image now? When I try to do that in the web GUI, I got the "Cannot edit Virtual Machine Disk. This VM is not managed by the engine." error. -- Chris Adams <cma(a)cmadams.net&gt;