[Pacemaker] Fixed! - Re: Problem with dual-PDU fencing node with redundant PSUs

[Andrew Beekhof]

On 29/06/2013, at 12:36 AM, Lars Marowsky-Bree <lmb at suse.com> wrote:

> On 2013-06-28T10:20:56, Digimer <lists at alteeve.ca> wrote:
> 
>>>> primitive fence_n01_psu1_off stonith:fence_apc_snmp \
>>>>        params ipaddr="an-p01" pcmk_reboot_action="off" port="1"
>>>> pcmk_host_list="an-c03n01.alteeve.ca"
>>>> primitive fence_n01_psu1_on stonith:fence_apc_snmp \
>>>>        params ipaddr="an-p01" pcmk_reboot_action="on" port="1"
>>>> pcmk_host_list="an-c03n01.alteeve.ca"
>>> 
>>> So every device twice, including location constraints? I see potential
>>> for optimization by improving how the fence code handles this ... That's
>>> abhorrently complex. (And I'm not sure the 'action' parameter ought to
>>> be overwritten.)
>> 
>> Andrew said yesterday that this will no longer be the case as of 1.1.10.
>> From then on, 'action="..."' will be honoured.
> 
> But that will not help you. Because you need to *still* have two
> separate fence actions for this fence topology thing to work, so a
> global action won't help; or am I missin something?

Its not global. 
It is perhaps a less-unobvious way of overriding the global value (since the agent metadata advertises it) than pcmk_(reboot|off)_action.

> 
>>> Glad you got it working, though.
>> 
>> I've debated writing a "fence_apc_multi" that takes "reboot" and two or
>> more PDU addresses/ports and does the break out for you.
> 
> That is so ugly, please, no :-(
> 
>> This would make the pacemaker config a lot cleaner, but that solution
>> would work for APC agent only. A "fix" in stonith would be portable to
>> all agents.
> 
> Exactly.
> 
> 
> Regards,
>    Lars
> 
> -- 
> Architect Storage/HA
> SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 21284 (AG Nürnberg)
> "Experience is the name everyone gives to their mistakes." -- Oscar Wilde
> 
> 
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