On Tue, Jan 21, 2014 at 10:28 AM, Laurent Barbe <laurent@xxxxxxxxxxx> wrote: > Hi all, > > About 0.75, when I created cache pool, kernel client like rbd or cephfs make > error "feature set mismatch". (Even if the device is not on the cached pool) > > $ rbd map rbd/myrbd => OK > > $ ceph osd pool create otherpool1 100 100 > $ ceph osd pool create otherpool2 100 100 > $ ceph osd tier add otherpool1 otherpool2 > $ ceph osd tier cache-mode otherpool2 writeback > > $ rbd map rbd/myrbd > kern log >> libceph: mon2 10.2.0.90:6789 feature set mismatch, my 4a042a42 < > server's 84a042a42, missing 800000000 > > Does the commit > https://github.com/ceph/ceph/commit/431a13eb370310a383abceeb509fe204a519e087 > fix this ? No, I don't think so. I might be wrong, but I think the idea is to require OSD_CACHEPOOL feature if any tiering relationships are present. Work on the kernel client is on-going, tiering support should arrive in 3.14. Thanks, Ilya -- 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
