[ClusterLabs] SBD & Failed Peer

[Jorge Fábregas]

On 09/07/2015 03:27 AM, Digimer wrote:
> And this is why I am nervous; It is always ideal to have a primary fence
> method that has a method of confirming the 'off' state. IPMI fencing can
> do this, as can hypervisor-based fence methods like fence_virsh and
> fence_xvm.

Hi Digimer,

Yes, I thought that confirmation was kind of sacred but now I know it's
not always possible.

> I would use IPMI (iLO, DRAC, etc) as the primary fence method and
> something else as a secondary, backup method. You can use SBD + watchdog
> as the backup method, or as I do, a pair of switched PDUs (I find APC
> brand to be very fast in fencing).

This sounds great.  Is there a way to specify a primary & secondary
fencing device?  I haven't seen a way to specify such hierarchy in
pacemaker.

Thanks,
Jorge