On Wed, 21 Jun 2017 at 20:08 Jason Dillaman <[email protected]> wrote:
> On Wed, Jun 21, 2017 at 12:32 PM, Jon Bernard <[email protected]> wrote: > > I suspect you'd want to enable layering at minimum. > > I'd agree that layering is probably the most you'd want to enable for > krbd-use cases as of today. The v4.9 kernel added support for > exclusive-lock, but that probably doesn't provide much additional > benefit at this point. The striping v2 feature is still not supported > by krbd for non-basic stripe count/unit settings. > The newer cinder ceph replication features use journaling and exclusive-lock (see [0]), so any krbd based driver would not be able to support this feature right now. [0] http://ceph.com/planet/openstack-cinder-configure-replication-api-with-ceph/
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