[Sheepdog] Is sheepdog supported in libvirt/virt-install ?

[Haven]

  Hi,

I have just discovered sheepdog a few days ago and started having a 
play with it yesterday. I've had a look through the getting started 
guide and have a couple of questions.

Is it possible to use sheepdog in libvirt via virt-install or only 
via the qemu utilities ?

Secondly, how do you cleanly remove added images. When running:
>  collie vdi delete <image>

I am left with error entries:

>   name        id    size    used  shared    creation time   vdi id
> ------------------------------------------------------------------
> error 8137509, 0
> error 16593660, 0

Many thanks for your time.

Simon