Hi Ilya and all, Is it safe to use kernel 3.16.7 rbd with Hammer tunables? I've tried this on a test Hammer cluster and the client seems to work fine. I've also mounted cephfs on a Hammer cluster (and Hammer tunables) using kernel 3.16. It seems to work fine (but not much testing). I remember recently someone asking about mounting cephfs with Hammer tunables and it was stated that kernel 4.1 was needed for mounting. Is the more correct statement that mounting is possible but problems will exist? Thanks! Chad. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com