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RE: [ogfs-dev] stonith <Was: Recovery Race conditions>



> 
> How do other dlm's do fencing?

I would be surprised if DLMs do fencing ... it seems like more of a cluster management job.

> 
> I have not used STONITH from heartbeat, but I'm almost positive
> heartbeat only invokes it for 2-node HA clusters, not for 3+ 
> node non-HA
> clusters.
That's too bad.

> 
> I think stonith has a command-line invocation, so ogfs could invoke it
> directly if required,
Ahh, good.  Not the ogfs module, however, but rather the lock module.  ogfs code knows nothing about STOMITH at all (and that, IMHO, is a *good thing*).


> but it seems like fencing is something 
> that needs
> to be handled prior to ogfs even knowing that a problem exists.

Yes, I agree.  See latest ogfs-memexp (search for STOMITH) to see recovery process done by memexp lock module.

> 
> Greg
> -- 
> Greg Freemyer
> 
> 
> 
> 
> 
> 
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