Dear ALL: Hello, I hope I'm sending to the correct list. I'm having problems starting up gfs 6.1, and hopefully it's just something incorrect with my configuration. I used two standard machine . My system is Fedora Core 4. The kernel modules load fine. First of all, I load all the needed kernel modules for the cluster. To do this, execute the following commands (on both nodes): root@node1 # modprobe lock_dlm root@node2 # modprobe lock_dlm Next, I start the cluster configuration service daemon on both nodes with root@node1 # ccsd root@node2 # ccsd Having started ccsd I need to create the cluster by starting the cluster manager on both nodes: root@node1 # /sbin/cman_tool join root@node2 # /sbin/cman_tool join when we are going to start both nodes we get that the first node without problems, but the second one never get connected at cman and remain trying to connect with the following error: 10.190.5.174 (node1) udp port 6809 unreachable. I have not start firewall. And I use the command of "netstat -a" , the result is udp 0 0 127.0.0.1:6809 0.0.0.0:* udp 0 0 224.0.0.1:6809 0.0.0.0:* but it receive package is 10.190.6.82:6809 (node2) -> 10.190.5.174 :6809 (node1) Then, I run cman_tool with DEBUG defined and get this: node1: sending HELLO node2: sending membership request, but I get udp port 6809 unreachable. My configuration file (cluster.xml) is <?xml version="1.0"?> <cluster name="alpha" config_version="1"> <cman two_node="1" expected_votes="1"> <multicast addr="224.0.0.1"/> </cman> <clusternodes> <clusternode name="node1" nodeid="1" votes="1"> <multicast addr="224.0.0.1" interface="eth1"/> <fence> <method name="human"> <device name="net_dev1"/> </method> </fence> </clusternode> <clusternode name="node2" nodeid="2" votes="1"> <multicast addr="224.0.0.1" interface="eth0"/> <fence> <method name="human"> <device name="net_dev2"/> </method> </fence> </clusternode> </clusternodes> <fencedevices> <fencedevice name="net_dev1" agent="fence_gnbd" server="node1" login="root" passwd="111111"/> <fencedevice name="net_dev2" agent="fence_gnbd" server="node2" login="root" passwd="111111"/> </fencedevices> </cluster> any help is much appreciated. Regards, thomasie --http://www.eyou.com --Îȶ¨¿É¿¿µÄµç×ÓÐÅÏä ÓïÒôÓʼþ Òƶ¯ÊéÇ© ÈÕÀú·þÎñ ÍøÂç´æ´¢...ÒÚÓÊδ¾¡ --http://vip.eyou.com --¿ì¿ìµÇ¼ÒÚÓÊVIPÐÅÏä ×¢²áÄúÖÐÒâµÄÓû§Ãû --http://sms.eyou.com --ÎÞÓǶþ¶þ×å¡¢×ãÇò´ó¸»ÎÌ...¾¡ÔÚÒÚÓʶÌÐÅ -- Linux-cluster@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/linux-cluster