[Ocfs2-users] 2 node OCFS2 clusters

[Thompson, Mark]

Hi Srini,

 

Thanks for the response.

 

So are the following statements correct:

 

If I stop the networking on node 1, node 0 will continue to allow OCFS2
filesystems to work and not reboot itself. 

 

If I stop the networking on node 0, node 1 (now being the lowest node?)
will continue to allow OCFS2 filesystems to work and not reboot itself. 

 

I guess I just need to know if it's possible to have a 2 node OCFS2
cluster that will cope with either one of the nodes dying, and have the
remaining node still provide service.

 

Regards,

 

Mark 

 

From: Srinivas Eeda [mailto:srinivas.eeda at oracle.com] 
Sent: 16 November 2009 14:57
To: Thompson, Mark
Cc: ocfs2-users at oss.oracle.com
Subject: Re: [Ocfs2-users] 2 node OCFS2 clusters

 

In a cluster with more than 2 nodes, if a network on one node goes down,
that node will evict itself but other nodes will survive. But in a two
node cluster, the node with lowest node number will survive no mater on
which node network went down.

thanks,
--Srini

Thompson, Mark wrote: 

Hi,

This is my first post here so please be gentle with me.

My question is, can you have a 2 node OCFS2 cluster, disconnect one node
from the network, and have the remaining node continue to function
normally? Currently we have a 2 node cluster and if we stop the NIC that
has the OCFS2 o2cb net connection running on it, the other node will
reboot itself. I have researched having a 2 node OCFS2 cluster but so
far I have been unable to find a clear solution. I have looked at the
FAQ regarding quorum, and my OCFS2 init scripts are enabled etc.

Is this possible, or should we look at alternative solutions?

Regards,

Mark

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