[Pacemaker] Is synchronizing rmtab needed?

[Christoph Bartoschek]

Florian Haas wrote:

> On Mon, May 21, 2012 at 1:36 AM, Christoph Bartoschek
> <ponto at pontohonk.de> wrote:
>> Hi,
>>
>> we currently have the problem that when the NFS server is highly used the
>> heartbeat:exportfs monitor script fails with a timeout because it cannot
>> write the rmtab to the exported filesystem within the given time.
> 
> So, how about increasing the timeout?

Yes. That is what we have done. But increasing the timeout to 180s seems a 
little bit excessive to me.


>> My question is now. Is it necessary to synchronize rmtab? Shouldn't the
>> clients just reconnect after a timeout?
> 
> Synchronizing the rmtab is meant for the clients being able to
> reconnect correctly after NFS _failover_, not just a brief network
> hiccup between the NFS client and server.

I am aware of this. But I wonder whether synchronizing the rmtab will only 
shorten the reconnect time for the NFS clients after a failover or whether 
it is necessary for the reconnect?

Christoph