On Thu, Sep 11, 2014 at 1:19 PM, Samuel Just <sam.just@xxxxxxxxxxx> wrote: > http://tracker.ceph.com/issues/9419 > > librbd unconditionally sends set_alloc_hint. Do we require that users > upgrade the osds first? Also, should the primary respond with > ENOTSUPP if any replicas don't support it? Something closer to the second option, I think...but then you run into the problem where maybe the PG gets moved from a set of new OSDs to a set of old ones that don't support the op. :/ I think for anything that goes to disk you need to go through a full features-in-the-osdmap process like we did for erasure coding. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
