Now OpenStack H needs a new RBD installation guide. But there exists some confusing problem may disturb newers:
1. OpenStack H can make use of RBD as the backend of Nova(/var/lib/nova/instances)
2. A critical patch is missing(https://review.openstack.org/#/c/46879/) which is used to integrate Glance and Nova.
3. If you did all above(make use of rbd as nova backend and backport patch), live-migration still needs a compatible patch
to work. And after JoshDurgin restore point 2 commit and merged, I will commit this compatible patch.
So we still have more things to do with OpenStack & Ceph. If you are a new user, consider just use Ceph as backend of
Glance and Cinder.
On Sun, Nov 3, 2013 at 3:01 AM, Dinu Vlad <dinuvlad13@xxxxxxxxx> wrote:
I don't know of any guide besides the official install docs from grizzly/havana, but I'm running openstack grizzly on top of rbd storage using glance & cinder and it makes (almost) no use of /var/lib/nova/instances. Live migrations also work. The only files there should be "config.xml" and "console" - otherwise, live-migrations won't work OR the path should be a mounted shared storage (NFS, GlusterFS etc).
Nova-compute stores "disk*" files under that path in the following cases:
- when one starts an instance only by using "--image <image id>" argument to nova-boot, without a pre-created cinder volume and without the "--block-device-mapping" argument
- when one uses a "config disk" for bootstrapping instances
- when one configures a "swap" disk in the flavor used to start the instance
On Nov 2, 2013, at 2:32 AM, Gaylord Holder <gholder@xxxxxxxxxxxxx> wrote:
> http://www.sebastien-han.fr/blog/2013/06/03/ceph-integration-in-openstack-grizzly-update-and-roadmap-for-havana/
>
> suggests it is possible to run openstack instances (not only images) off of RBDs in grizzly and havana (which I'm running), and to use RBDs in lieu of a shared file system.
>
> I've followed
>
> http://ceph.com/docs/next/rbd/libvirt/
>
> but I can only get boot-from-volume to work. Instances still are being housed in /var/lib/nova/instances, making live-migration a non-starter.
>
> Is there a better guide for running openstack instances out of RBDs, or is it just not ready yet?
>
> Thanks,
>
> -Gaylord
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Best Regards,
Wheat
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
