On 02/05/2015 08:55 AM, Don Doerner wrote: > I have been using Ceph to provide block devices for various, nefarious > purposes (mostly testing ;-). But as I have worked with various Linux > distributions (RHEL7, CentOS6, CentOS7) and various Ceph releases > (firefly, giant), I notice that the onlycombination for which I seem > able to find the needed kernel modules (rbd, libceph) is RHEL7-firefly. Hi Don, The RBD kernel module is not deprecated; quite the opposite in fact. A year ago things were a bit rough regarding supporting the Ceph kernel modules on RHEL 6 and 7. All Ceph kernel module development goes upstream first into Linus' kernel tree, and that tree is very different than what ships in RHEL 6 (2.6.32 plus a lot of patches) and RHEL 7 (3.10.0 plus a lot of patches). This meant that it was historically much harder for the Ceph developer community to integrate what was going on upstream with what was happening in the downstream RHEL kernels. Currently, Red Hat's plan is to ship rbd.ko and some of the associated firefly userland bits in RHEL 7.1. You mention that you've been testing on RHEL 7, so I'm guessing you're got a RHEL subscription. As it turns out, you can try the new kernel package out today in the RHEL 7.1 Beta that's available to all RHEL subscribers. It's a beta, so please open support requests with Red Hat if you happen to hit bugs with those new packages. Unfortunately CentOS does not rebuild and publish the public RHEL Betas, so for CentOS 7, you'll have to wait until RHEL 7.1 reaches GA and CentOS 7.1 rebuilds it. (I suppose you could jump ahead of the CentOS developers here and rebuild your own kernel package and ceph userland if you're really eager... but you're really on your own there :) - Ken _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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