Hi Wido, Thanks again! Good to hear, it saves us a lot of upgrade trouble in advance. If I'm not mistaken, we haven't done anything with CRUSH tunables. Any pointers on how to make sure we really didn't? Regards, Kees On 20-12-16 10:14, Wido den Hollander wrote: > No, you don't. A Hammer/Jewel client can talk to a Hammer/Jewel cluster. One thing, don't change any CRUSH tunables if the cluster runs Jewel and the client is still on Hammer. > > The librados/librbd version is what matters. If you upgrade the cluster to Jewel and leave the client on Hammer it works. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |