[Pacemaker] Antwort: Re: sles11, ocfs2, 2 node cluster with one storage, failover problem

[Dejan Muhamedagic]

Hi,

On Tue, May 18, 2010 at 10:26:37AM +0200, Patrik.Rapposch at knapp.com wrote:
> 
> so, that I get you right:
> 
> if the NIC fails or the cat cable gets pulled out, my cluster will be
> unable to continue it's work?

No, that's a different event from bringing the interface down.
Though if that's the only comm path between the nodes, you're in
trouble.

> so would there be other options than bonding?

Not with openais.

Thanks,

Dejan

> thx 4 your help.
> 
> patrik
> 
> 
> 
> 
> 
>                                                                            
>              Dejan Muhamedagic                                             
>              <dejanmm at fastmail                                             
>              .fm>                                                       An 
>                                          The Pacemaker cluster resource    
>              17.05.2010 17:35            manager                           
>                                          <pacemaker at oss.clusterlabs.org>   
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>                The Pacemaker             Re: [Pacemaker] sles11, ocfs2, 2  
>              cluster resource            node cluster with one storage,    
>                   manager                failover problem                  
>              <pacemaker at oss.cl                                             
>               usterlabs.org>                                               
>                                                                            
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> 
> 
> 
> 
> Hi,
> 
> On Mon, May 17, 2010 at 12:24:12PM +0200, Patrik.Rapposch at knapp.com wrote:
> >
> > hy,
> >
> > I have following problem:
> >
> > I configured a 2 node cluster running SLES11 with the HAE extension. I
> use
> > "pacemaker-1.0.3-4.1", "openais-0.80.3-26.1" and "ocfs2 1.4.1".
> > I used the SLES high availabilty guide to configure my cluster.
> >
> > I have 2 ocfs2 mount clone-resources running on the cluster.
> >
> > My first problem was, that the cluster didn't work in any way, because I
> > defined 2 rings in the openais.conf, which only will be supported from
> > novell with the SLES SP1, so I switched back to one ring.
> >
> > The major problem I have now is following:
> >
> > When I reboot one node, or stop openais on one node, the cluster behaves
> as
> > it should, that means the surviving node
> > is still able to access the ocfs2 mounts and works normaly.
> >
> > But if I trigger an ifdown command on the interface, which is defined in
> 
> openais/pacemaker can't handle ifdown. Neither can corosync with
> multiple rings. You have to make sure that the interface stays up
> at all times (i.e. don't use dhcp).
> 
> Thanks,
> 
> Dejan
> 
> > the openais.conf, the node hangs and restarts after a while. The
> surviving
> > node doesn't support to open any other ssh sessions and if I try to open
> a
> > mounted directory, the existing session hangs and I have to wait, till
> the
> > first node is up again.
> >
> > I don't have a glue how this can happen and hope, that you can help me.
> >
> > Attached you can find my configs and failure logs.
> >
> > (See attached file: config_plus_failure_logs.rtf)
> >
> > Mit freundlichen Grüßen / Best Regards
> >
> > Patrik Rapposch, Bsc.
> > Systemadministration
> >
> > KNAPP Systemintegration GmbH
> > Waltenbachstraße 9
> > 8700 Leoben, Austria
> > Phone: +43 3842 805
> > Mobil:
> > Fax: +43 3842 82930-990
> > patrik.rapposch at knapp.com
> > www.KNAPP.com
> >
> > Commercial register number: FN 138870x
> > Commercial register court: Leoben
> 
> 
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