On 03/20/2014 02:07 PM, Dmitry Borodaenko wrote:
The patch series that implemented clone operation for RBD backed ephemeral volumes in Nova did not make it into Icehouse. We have tried our best to help it land, but it was ultimately rejected. Furthermore, an additional requirement was imposed to make this patch series dependent on full support of Glance API v2 across Nova (due to its dependency on direct_url that was introduced in v2). You can find the most recent discussion of this patch series in the FFE (feature freeze exception) thread on openstack-dev ML: http://lists.openstack.org/pipermail/openstack-dev/2014-March/029127.html As I explained in that thread, I believe this feature is essential for using Ceph as a storage backend for Nova, so I'm going to try and keep it alive outside of OpenStack mainline until it is allowed to land. I have created rbd-ephemeral-clone branch in my nova repo fork on GitHub: https://github.com/angdraug/nova/tree/rbd-ephemeral-clone I will keep it rebased over nova master, and will create an rbd-ephemeral-clone-stable-icehouse to track the same patch series over nova stable/icehouse once it's branched. I also plan to make sure that this patch series is included in Mirantis OpenStack 5.0 which will be based on Icehouse. If you're interested in this feature, please review and test. Bug reports and patches are welcome, as long as their scope is limited to this patch series and is not applicable for mainline OpenStack.
Thanks for taking this on Dmitry! Having rebased those patches many times during icehouse, I can tell you it's often not trivial. Do you think the imagehandler-based approach is best for Juno? I'm leaning towards the older way [1] for simplicity of review, and to avoid using glance's v2 api by default. I doubt that full support for v2 will land very fast in nova, although I'd be happy to be proven wrong. Josh [1] https://review.openstack.org/#/c/46879/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
