Hi there (again :P) I'm still fighting with all this, sorry to bother so much (hope some day when I understand it all better I'll write some article on how to set this up) Well, I have already up the cluster and mounted the gfs filesystem in 3 machines, and if one of those goes down, it's correctly fenced. The FC port is also disconnected, so I suppose at this point is everything ok. The problem is on the recovery. I understand that when a node rejoins is automaticaly unfenced, and then it can rejoin the fence and mount again the filesystem. I've blocked all input and output traffic on the node I want to test with iptables. The node gets fenced ok: Aug 8 16:00:48 gfstest2 fenced[2594]: fencing node "gfstest1" Aug 8 16:00:56 gfstest2 fenced[2594]: fence "gfstest1" success Now I can access the GFS filesystem safely from my other 2 nodes, as the FC port for gfstest1 is disabled now, but if I enable traffic for the node, it does not rejoin the cluster. Shouldnt this be automatically? Anyway, I cannot rejoin/leave/whatever the cluster from gfstest1: gfstest1:~# cman_tool services Service Name GID LID State Code Fence Domain: "default" 1 2 run - [1 2 3] DLM Lock Space: "primer_fs" 2 3 run - [1 2 3] GFS Mount Group: "primer_fs" 3 4 run - [1 2 3] gfstest1:~# cman_tool join cman_tool: Node is already active gfstest1:~# cman_tool leave cman_tool: Can't leave cluster while there are 5 active subsystems and also, I cannot umount /dev/sdc1 as I have no access to the SAN (and however DLM should block him not to do so). So I get a totally screwed up system, that I can just fix by hard-rebooting (if I do a clean reboot, the system "hangs" while "umounting filesystems"). Also, when the system boots up, the SAN is still unaccessible, as the fencing script does not run to re-enable the port ... I'm loooooost diving into google querys ... and certainly it's hard to find accurate info about all this :/ could someone spot some light? (probably I dont understand well how the fencing system works, but also havent find anywhere where its explained :/) thx in advance :) -- Javier Polo @ Datagrama 902 136 126 -- Linux-cluster@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/linux-cluster
