What are the kernel versions involved ? We have Ubuntu precise clients talking to a Ubuntu trusty cluster without issues - with tunables optimal. 0.88 (Giant) and 0.89 has been working well for us as far the client and Openstack are concerned. This link provides some insight as to the possible problems: http://cephnotes.ksperis.com/blog/2014/01/21/feature-set-mismatch-error-on-ceph-kernel-client Things to look for: - Kernel versions - Cache tiering - Tunables - hashpspool -- David Moreau Simard > On Dec 5, 2014, at 4:36 AM, Antonio Messina <antonio.messina@xxxxxxxxxxx> wrote: > > On Fri, Dec 5, 2014 at 2:24 AM, Anthony Alba <ascanio.alba7@xxxxxxxxx> wrote: >> Hi Cephers, >> >> Have anyone of you decided to put Giant into production instead of Firefly? > > This is very interesting to me too: we are going to deploy a large > ceph cluster on Ubuntu 14.04 LTS, and so far what I have found is that > the rbd module in Ubuntu Trusty doesn't seem compatible with giant: > > feature set mismatch, my 4a042a42 < server's 2104a042a42, missing > 21000000000 > > I tried with different "ceph osd tunables" but nothing seems to fix the issue > > However, this cluster will be mainly used for OpenStack, and qemu is > able to access the rbd volume, so this might not be a big problem for > me. > > .a. > > -- > antonio.messina@xxxxxxxxxxx +41 (0)44 635 42 22 > antonio.s.messina@xxxxxxxxx > S3IT: Service and Support for Science IT http://www.s3it.uzh.ch/ > University of Zurich > Winterthurerstrasse 190 > CH-8057 Zurich Switzerland > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |