On Mon, Apr 20, 2015 at 1:33 PM, Nikola Ciprich <nikola.ciprich@xxxxxxxxxxx> wrote: > Hello, > > I'm quite new to ceph, so please forgive my ignorance. > Yesterday, I've deployed small test cluster (3 nodes, 2 SATA + 1 SSD OSD / node) > > I enabled MDS server and created cephfs data + metadata pools and created > filesystem. > > However upon mount requests, I'm getting following error: > > [Apr20 10:09] libceph: mon0 10.0.0.1:6789 feature set mismatch, my 2b84a042aca < server's 102b84a042aca, missing 1000000000000 > > This two threads seem related to me: > http://www.spinics.net/lists/ceph-users/msg17406.html > ("protocol feature mismatch" after upgrading to Hammer) > > and > http://www.spinics.net/lists/ceph-users/msg17445.html > (crush issues in v0.94 hammer) > > but I'm using 0.94.1 on all nodes (and 3.18.11) kernel > and am still getting those errors, which to my understanding > I shouldn't be.. > > What should I check please? > > In case it could help, my crushmap can be checked here: > > http://nik.lbox.cz/download/ceph/crushmap.txt Have you set your crush tunables to hammer? Your crushmap has straw2 buckets (alg straw2). That's going to be supported in 4.1 kernel - when 3.18 was released none of the straw2 stuff existed. You should be able to change "alg straw2" to "alg straw" and that should make it work with 3.18 kernel. Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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