On Thu, Feb 9, 2017 at 3:06 PM, <ovirt@timmi.org> wrote:

Hi oVirt List,

I'm trying to change the disk allocation policy of a VM disk and I'm not able to perform this task via the oVirt front-end.

Is someone able to tell me how I can do that?

Best regards and thank you
Christoph

I've done it in the past by creating a snapshot of a VM and then cloning the snapshot and selecting preallocated for the cloned disks (if you have to do it without powering off the source VM)

Or directly creating a clone of the VM if it is powered off, I think it creates a full preallocated copy and btw you have no way to tell to clone as thin if I remember correctly

Gianluca