[Ocfs2-users] 5 node ocfs2 cluster - what would be the best way to bring all these 5 nodes down without panic any nodes.

[Tony Rios]

I would also love to hear the answer to this.  We have servers panicing quite frequently.  Makes for an extremely unstable environment, especially if a server is under high load or if you need to reboot.


On Nov 7, 2011, at 4:43 AM, veeraa bose wrote:

> Dear ALL,
> 
> we have 5 node ocfs2 cluster, we have rebooted this servers recently, when I rebooted 1st node all the 4 remaining nodes got panicked/rebooted and these servers has more than 150 ocfs2, because of the unclean shutdown, servers took more time to do fsck and mount the 150 ocfs2 FS.
> 
> 
> 
> and the split-brain algorithm for ocfs2 cluster on odd-numbered nodes are below.
> 
> 
> 
> For an odd-numbered cluster with more than two nodes, the group of nodes that can still communicate with each other and
> whose number is greater than half the number of heartbeating nodes will form quorum - all other nodes are fenced
> (panic/restart).
> 
> 
> 
> could any one please suggest what would be the best way to bring all these 5 nodes down without panic any node and for shutdown,  each node its take more than 20 minutes, because of 150 ocfs2 FS. 
> 
> 
> 
> and is there any way, we can reduce the mounting/umounting time of these ocfs2 FS.
> 
> 
> 
> 
> Thanks
> 
> Veera.
> 
> 
> 
> 
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