I'm building a two node cluster to run vserver systems on. I've setup glusterfs with this config: # node a volume data-posix type storage/posix option directory /export/cluster end-volume volume data1 type features/posix-locks subvolumes data-posix end-volume volume data2 type protocol/client option transport-type tcp/client option remote-host nb.1 option remote-subvolume data2 end-volume volume server type protocol/server option transport-type tcp/server option bind-address 4.7.11.1 subvolumes data1 option auth.ip.data1.allow 4.7.11.2 end-volume volume data type cluster/afr option read-subvolume data1 subvolumes data1 data2 end-volume #node b volume data-posix type storage/posix option directory /export/cluster end-volume volume data1 type protocol/client option transport-type tcp/client option remote-host na.1 option remote-subvolume data1 end-volume volume data2 type features/posix-locks subvolumes data-posix end-volume volume server type protocol/server option transport-type tcp/server option bind-address 4.7.11.2 subvolumes data2 option auth.ip.data2.allow 4.7.11.1 end-volume volume data type cluster/afr option read-subvolume data2 subvolumes data1 data2 end-volume The filesystem works as expected but I've got some error messages like this: 2008-11-03 14:58:56 E [fuse-bridge.c:2422:fuse_setlk_cbk] glusterfs-fuse: 339424: ERR => -1 (11) 2008-11-03 14:58:56 E [posix-locks.c:1148:pl_lk] data1: returning EAGAIN 2008-11-03 14:58:56 E [afr.c:3192:afr_lk_cbk] data: (path=/vservers/ph01/var/supervise/socklog-unix/log/supervise/lock child= data1) op_ret=-1 op_errno=11 What does this error mean? How can I fix this isssue?. Does anyone run Linux Vservers on gluster? Many thanks Matthias