Hi Nir, I have not tried to use Ovirt with Ceph, my question was about libvirt and was directed to ask the question here, sorry for the noise; I understand libvirt is not really ovirt's people concern. The thing is qemu can do ceph rbd in EL7, libvirt does not, although support seems to be there and a simple rebuild enables it. Was hoping you guys know more. Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message -----
From: "Nir Soffer" <nsoffer@redhat.com> To: "Nux!" <nux@li.nux.ro> Cc: "users" <users@ovirt.org> Sent: Monday, 12 October, 2015 09:05:00 Subject: Re: [ovirt-users] CEPH rbd support in EL7 libvirt
On Sun, Oct 11, 2015 at 12:52 PM, Nux! <nux@li.nux.ro> wrote:
Hi folks,
I was directed here by Sandro with the question in the $subject. As I could not find anything conclusive in either bugzilla or the 7.2 release notes, can someone clarify this for me? At this point it's apparently as easy as rebuilding the libvirt src.rpm with "with_storage_rbd 1".[1]
I see users migrating from CentOS to Ubuntu because this is missing, it's not even in technology preview. Kind of odd RH undermining their own projects in this way.
[1] - http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-s...
RHEL 7.1 supports rbd out of the box; so should be current CentOS 7.
We do not use libvirt storage pool for ovirt, so I don't think you need to build anything.
Also, we do not access rbd volumes via libvirt. When we run vms using rbd: volumes, libvirt pass the volume url to qemu, and qemu access the volume. So we may not need any rbd support in libvirt itself.
Did you try to use ceph with ovirt 3.6 on CentOS?
Nir