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Re: [Linux-cluster] Cluster Suite v3 IPMI fencing time

On Sun, 2006-03-26 at 12:48 -0300, Celso K. Webber wrote:

> Mar 25 22:52:48 member1 cluquorumd[4112]: <warning> --> Commencing STONITH <--
> Mar 25 22:55:00 member1 cluquorumd[4112]: <notice> STONITH: member2 has been
> fenced!
> Mar 25 22:57:11 member1 cluquorumd[4112]: <notice> STONITH: member2 is no
> longer fenced off.
> Questions:
> 1. member1 does not take over the services until the fencing process
> completes, is that correct?


> 2. if it is a correct behaviour that member1 waits for the fencing completion
> to take over services, how can I reduce the total fencing time? I didn't find
> any parameters under the cludb man page for this.

Turn off ACPI on both machines, or else IPMI will try a "graceful"
shutdown, which is exactly what you do *not* want.  If the machine is
dead or hung, it may not respond to the ACPI request at all.

Change the kernel command line to include "acpi=off" and chkconfig --del

Note that with IPMI, you should use the NIC with IPMI for only IPMI
traffic (or at least separate IPMI traffic from the cluster traffic), or
it can become a single point of failure.

-- Lon	

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