On 19.01.2011 12:41, Wido den Hollander wrote:
Hi Thomas, I think the answer is Yes and No on this question, the devs might have another approach for your situation. If you would do this, you would have a MON, MDS and OSD on every server, in theory that would work. Mounting would be done by connecting to on of the MON's (doesn't matter which one). But Ceph requires, well, advises a odd number of monitors (Source: http://ceph.newdream.net/wiki/Designing_a_cluster ) So you would require a third node which is running your third monitor to keep track of both nodes. My advise, for two nodes, use something like DRBD in Primary<> Primary and use a cluster filesystem like OCFS2.
Currently, I'm running glusterfs in such a scenario (two servers, each being also clients), but I wanted to give ceph a try (glusterfs has some performance issues with lots of small files), also because of its nice features (snapshots, rbd etc.).
-- Tomasz Chmielewski http://wpkg.org -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
