Hi, I'm currently use crush tunables "optimal" value. If I upgrade from firefly to hammer, does the optimal value will upgrade to optimal values for hammer. So, does my clients (qemu-librbd) need to be also upgraded to hammer to support new hammer features ? If yes, I think to: - change crush tunables to firefly - upgrade firefly cluster to hammer cluster - upgrade all my clients to hammer. (with qemu live migration, to have new qemu process with last hammer librbd) - change crush tunables to hammer Is it the right way ? _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com