[Pacemaker] Fencing configuration with pcmk_host_map argument

[Andrew Beekhof]

On Thu, Feb 7, 2013 at 8:22 PM, Marek Grac <mgrac at redhat.com> wrote:
> On 02/07/2013 07:07 AM, Andrew Beekhof wrote:
>>
>> This is right, fence agents (all of them) can be used only with one port
>> value.
>> Would this be a good feature to add?
>> Particularly for people using "reboot" as the action.
>>
>> Otherwise the caller (ie. me :-) ) has to split it up into stop 1,
>> stop 2, start 1, start 2 - which is messy.
>
> It is possible to add this feature to most of the fence agent as it should
> be part of common fencing library. After brief investigation, it can be
> fairly simple change and I'm not completely against it. But we would have to
> better define what should be output of fence agent when entering multiple
> plug values.
>
> * action = status: (single) return code 0 (ON); return code 2 (OFF) ->
> (multiple) ?

I suspect we want rc=0 if any of the ports are on.

> * action = off/on: (single) fail if operation was not completed ->
> (multiple) fail if any of these operation was not completed

yep

> * action = reboot: (single) fail if OFF fails -> (multiple) fail if any OFF
> fails

yep

> Some fence agents can have 'reboot' implemented without OFF/ON procedure
> (direct usage of command 'reboot') for these multiple plug should be
> forbidden.

Could we not fall back to off off on on ?