Re: [Aoetools-discuss] AoE + NFS + GFS

[Mark S. <ma...@fu...>]

On 20 Apr 2009, at 11:12, er krishna wrote:

> I am trying to setup NFS failover and its recovery via GFS (using  
> CMAN) tool. Of course, I have created a gfs file system over my  
> logical volume ( basically its on exported block devices ). I have  
> three nodes centos, centos1 and centos2. I am attaching my  
> cluster.conf file for further reference. Everything seems fine, but  
> I am not able to migrate my NFS services when I poweroff my first  
> node. Anybody has any idea about it ?
>

A quick glance at your cluster.conf suggests you're not telling cman  
how many votes to require for quorum. I'm not sure what the behaviour  
of cman is in these conditions but it might well be setting  
expected_votes to the total number of nodes in your cluster ie 3. So  
if one node went down then the cluster would lose quorum and any  
cluster operations including failover will fail.

<cman/>

For a 3 node cluster I guess expected_votes would be best at 2, so  
maybe try changing your cman line to this:

<cman expected_votes="2" />

And that might fix it... Of course this thread is a little old now,  
you might have already fixed the problem...

Hope this helps,

Mark