To check whether the point version skew might have an effect, I compiled gluster from the source: <http://download.gluster.org/pub/gluster/glusterfs/LATEST/glusterfs-3.3.0.tar.gz> and tried it again. However, even tho the server and client are now from (I assume) the same source, I still get that error: [2012-06-20 17:13:52.084846] I [client-handshake.c:453:client_set_lk_version_cbk] 0-gl-client-6: Server lk version = 1 [2012-06-20 17:13:52.087352] I [client-handshake.c:1636:select_server_supported_programs] 0-gl-client-5: Using Program GlusterFS 3.3.0, Num (1298437), Version (330) The server was intalled from the CentOS binary of that version: <http://download.gluster.org/pub/gluster/glusterfs/LATEST/CentOS/glusterfs-server-3.3.0-1.el6.x86_64.rpm> the client from the self-compiled code.