RBD storage pool support in libvirt

[Wido den Hollander <wido@widodh.nl>]

Hi,

About two weeks ago I submitted my patch to the libvirt mailinglist: 
https://www.redhat.com/archives/libvir-list/2012-March/msg01320.html

I've placed the code on github: https://github.com/wido/libvirt

This storage drivers lets you managed RBD images through libvirt which 
could make it easier to manage your RBD storage pools.

I'm also working on CloudStack integration for RBD (Can also be found on 
Github), that required RBD support in libvirt since CS relies on libvirt 
for managing it's storage pools.

Since the patch hasn't been accepted in libvirt yet I'll keep rebasing 
the code against the master branch regularly.

Josh from the Ceph team helped me to improve the code, thanks for that!

I encourage everybody to test it and play around with it, since there 
probably will be some corner cases I haven't found.

Example XML's can be found in "tests/storagepoolxml2xmlin"

Wido