[Users] Ceph / rbd and ovirt

[Ayal Baron]

Hi Josh,

----- Original Message -----
> 
> 
> 
> On Sun, Sep 23, 2012 at 8:41 AM, Itamar Heim < iheim at redhat.com >
> wrote:
> 
> 
> 
> On 09/23/2012 05:33 PM, Josh Logan wrote:
> 
> 
> 
> 
> On Sun, Sep 23, 2012 at 6:10 AM, Itamar Heim < iheim at redhat.com
> 
> 
> <mailto: iheim at redhat.com >> wrote:
> 
> On 09/22/2012 08:58 AM, Josh Logan wrote:
> 
> 
> I'm currently setting up an ovirt cluster and so far it looks
> good. I
> like the integration with Foreman http://theforeman.org/ .
> 
> I would like to use Ceph / rbd for my storage. I saw some
> mention of
> patches coming in May, but I did not find any new posts.
> 
> What is the status of this work? Is there some patches I can
> try out?
> I have a working Ceph cluster and a working ovirt cluster, I
> just need a
> way to bring them together.
> 
> Thanks, JOSH
> 
> 
> 
> I don't remember any active work on this right now (for sure nothing
> like the gluster integration being done).
> but iiuc, ceph provides posixfs support - did you try creating a
> posixfs based storage domain?
> (you would need a "full" host (not ovirt-node) to install ceph
> client components on).
> 
> Thanks,
> Itamar
> 
> 
> 
> I am doing my work on Fedora 17 hosts, not ovirt-node, since I know
> this
> will need more OS support.
> 
> There are a few different Ceph filesystems. But the posix based one
> is
> the least ready for production. The rbd filesystem is integrated into
> qemu and libvirt is the most suited for VM images.
> 
> Are the Gluster patches available? I would like to see what that
> feature looks like and if I can modify them for Ceph.
> If there is a better filesystem to investigate please let me know.
> 
> Thanks, JOSH
> 
> 
> gluster as a native storage domain (rather than posixfs) is still in
> reviews (and has patches only for vdsm side).
> http://gerrit.ovirt.org/#/c/ 6856/
> 
> you can also use NFS in the meantime if relevant for ceph.
> 
> 
> 
> Thanks for the pointer. I'll follow that and see what I learn.
> 
> The vdsm side may be similar since both are network disk device.
> There are only 2 steps needed to start up a VM with rbd.
> 
> qemu-img create -f rbd rbd:data/host1 10G
> 
> Then to start the image for qemu add -drive
> file=rbd:data/host1,if=none,id=drive-virtio-disk0,format=raw
> 
> or within libvirt:
> <disk type='network' device='disk'>
> <driver name='qemu' type='raw'/>
> <source protocol='rbd' name='data/host1'/>
> <target dev='vda' bus='virtio'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> function='0x0'/>
> </disk>
> 
> So the steps are simple, and maybe Gluster is more complex then I
> should use as an example.

Have you followed up on this?
Do you need more pointers?

Regards,
Ayal.

> 
> Thanks, JOSH
> 
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