[Linux-cluster] Cluster node hangs

Elvir Kuric ekuric at redhat.com
Sun Feb 13 09:41:55 UTC 2011

On 02/13/2011 10:14 AM, Sachin Bhugra wrote:
> Hi ,
> I have setup a two node cluster in lab, with Vmware Server, and hence 
> used manual fencing. It includes a iSCSI GFS2 partition and it service 
> Apache in Active/Passive mode.
> Cluster works and I am able to relocate service between nodes with no 
> issues. However, the problem comes when I shutdown the node, for 
> testing, which is presently holding the service. When the node becomes 
> unavailable, service gets relocated and GFS partition gets mounted on 
> the other node, however it is not accessible. If I try to do a "ls/du" 
> on GFS partition, the command hangs. On the other hand the node which 
> was shutdown gets stuck at "unmounting file system".
> I tried using fence_manual -n nodename and then fence_ack_manual -n 
> nodename, however it still remains the same.
> Can someone please help me is what I am doing wrong?
> Thanks,
> --
> Linux-cluster mailing list
> Linux-cluster at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-cluster
It would be good to see  /etc/fstab configuration used on cluster nodes. 
If /gfs partition is mounted manually it will not be unmounted correctly 
in case you restart node ( and not executing umount prior restart ), and 
will hang during shutdown/reboot process.

More at:  



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