[Pacemaker] Temporarily disabling the cluster

[Andrew Beekhof]

On Sep 9, 2008, at 8:08 PM, Xinwei Hu wrote:

> 2008/9/9 Lars Marowsky-Bree <lmb at suse.de>:
>> On 2008-09-09T17:43:19, Xinwei Hu <hxinwei at gmail.com> wrote:
>>
>>>> Basically:
>>>>
>>>> "Enable maintenance mode" means "is_managed == false" for  
>>>> everything
>>>> (overrides individual resource settings?), plus disabling all
>>>> monitors.
>>>>
>>>> "Disabling maintenance mode (going back to production" - probe
>>>> everything everywhere again(?), reenable monitors, resume normal
>>>> "is_managed" behaviour.
>>>>
>>>> Is that about it?
>>>
>>> The problem is what should happen when a resource is "suspended"  
>>> while
>>> pacemaker's about to relocate it due to some other events ?
>>
>> In this mode, pacemaker would never move a resource.
>
> Yes. And then all resources colocated/ordered with that are "pinned"
> as well. So effectively, we have the whole cluster "half-suspended" as
> well.
>
> This leads me to think that "suspend" a specific resource is not a  
> clean idea.

I agree. I think we're talking about a global state here.