Hi, I'm not a GFS expert either :-) In fact, I erased all the configuration of the cluster and try to do it again from scratch with luci/ricci configuration tools (perhaps I did something wrong last time) mount -vv gives the following information: [root at node1 gfs]# mount -t gfs -vv /dev/home2/home2 /home2 /sbin/mount.gfs: mount /dev/mapper/home2-home2 /home2 /sbin/mount.gfs: parse_opts: opts = "rw" /sbin/mount.gfs: clear flag 1 for "rw", flags = 0 /sbin/mount.gfs: parse_opts: flags = 0 /sbin/mount.gfs: parse_opts: extra = "" /sbin/mount.gfs: parse_opts: hostdata = "" /sbin/mount.gfs: parse_opts: lockproto = "" /sbin/mount.gfs: parse_opts: locktable = "" /sbin/mount.gfs: message to gfs_controld: asking to join mountgroup: /sbin/mount.gfs: write "join /home2 gfs lock_dlm gfs-test:gfs-data rw /dev/mapper/home2-home2" ... And hangs at that point (On the other node it happens the same) I tried it turning off the local firewalls on the nodes and they reached each other without problem with pings. Also, there are no more firewalls between them. The new configuration is more simple: [root at node1 gfs]# more /etc/cluster/cluster.conf <?xml version="1.0"?> <cluster alias="gfs-test" config_version="6" name="gfs-test"> <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/> <clusternodes> <clusternode name="node1.fib.upc.es" nodeid="1" votes="1"> <fence> <method name="1"> <device name="test" nodename="node1.fib.upc.es"/> </method> </fence> </clusternode> <clusternode name="node2.fib.upc.es" nodeid="2" votes="1"> <fence> <method name="1"> <device name="test" nodename="node2.fib.upc.es"/> <device name="test" nodename="node2.fib.upc.es"/> </method> </fence> </clusternode> </clusternodes> <cman expected_votes="1" two_node="1"/> <fencedevices> <fencedevice agent="fence_manual" name="test"/> </fencedevices> <rm> <failoverdomains/> <resources> <clusterfs device="/dev/home2/home2" force_unmount="0" fsid="3280" fstype="gfs" mountpoint="/home2" name="home" self_fence="0"/> </resources> </rm> </cluster> Finally, I reformatted /dev/home2/home2 with the following command that gave no errors but it doesn't affect the final result: gfs_mkfs -O -j 3 -p lock_dlm -t gfs-test:gfs-data /dev/home2/home2 Thanks, Sandra PD: I append an strace but I can't see anything useful. -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: strace.txt URL: <http://lists.centos.org/pipermail/centos/attachments/20100326/81071eca/attachment-0005.txt>