[Pacemaker] DRBD active/passive on Pacemaker+CMAN cluster unexpectedly performs STONITH when promoting

[Digimer]

On 03/07/14 07:47 PM, Giuseppe Ragusa wrote:
>  >
>  > > }
>  > > handlers {
>  > > fence-peer "/usr/lib/drbd/rhcs_fence";
>  > > }
>  > > }
>  > >
>  > >
>  > rhcs_fence is wrong fence-peer utility. You should use
>  > /usr/lib/drbd/crm-fence-peer.sh and
>  > /usr/lib/drbd/crm-unfence-peer.sh instead.
>
> But my understanging (probably wrong) was that the fence-peer handler is
> meant to be called for STONITH, not for "usual" promotions/demotions
> to/from Primary/Secondary.
>
> If I use the aforementioned pair of handlers (crm-*.sh) for
> fence/unfence, do I still get STONITH behavior for "split brain cases"?
>
> Many thanks for your suggestion!
>
> Regards,
> Giuseppe

Correct. The 'rhcs_fence' handler passes fence calls on to cman, which 
you have set to redirect on to pacemaker. This isn't what it was 
designed for, and hasn't been tested. It was meant to be an updated 
replacement for obliterate-peer.sh in cman+rgmanager clusters directly 
(no pacemaker).

Cheers

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