[Pacemaker] why does pacemaker execute fence action immediately when the target node becomes UNCLEAN?

[Jake Smith]

----- Original Message -----
> From: "Digimer" <lists at alteeve.ca>
> To: "The Pacemaker cluster resource manager" <pacemaker at oss.clusterlabs.org>
> Cc: "Lars Marowsky-Bree" <lmb at suse.com>
> Sent: Wednesday, January 2, 2013 11:49:13 AM
> Subject: Re: [Pacemaker] why does pacemaker execute fence action immediately when the target node becomes UNCLEAN?
> 
> On 01/02/2013 07:17 AM, Lars Marowsky-Bree wrote:
> > On 2012-12-20T15:36:45, bin chen <free2coder at gmail.com> wrote:
> > 
> >> I have defined a fence resource ,and cloned it.But when a node
> >> becomes
> >> UNCLEAN(I disconneted its network),the fence action will be
> >> executed
> >> immediately.Is there a method to avoid it(for example,a network
> >> tolerance
> >> time for network flash time )?For if the network is not stable,
> >>  I don`t want cluster nodes be fenced again and again.:)
> > 
> > Increase the membership timeout of the underlying layer.
> > 
> > And make the network more stable. (Bonding, etc.)
> > 
> > 
> > 
> > Regards,
> >     Lars
> 
> To build on Lars' comments;
> 
> "underlying layer" == corosync, which is tweaked in the corosync.conf
> file. As for bonding, only use mode=1. The other modes don't
> fail/recover fast enough.

Don't want to derail the main topic but aren't bonding modes 0 and 4 acceptable also?

Those are what my first/second rings use and I've had no problems (knock on wood)

Jake

> 
> cheers
> 
> --
> Digimer
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