Hi Ulrich,

I did not folow the complete thread, just jumped in - sorry. Is the
resource inside a resource group? In this case the stickiness is
multiplied. And sofor the stickiness could be greater than the location
role (score).

Regards
Fabian

On 08/04/2011 03:10 PM, Ulrich Windl wrote:
>>>> Maloja01 <maloj...@arcor.de> schrieb am 04.08.2011 um 12:58 in Nachricht
> <4e3a7b5c.1030...@arcor.de>:
>> On 08/04/2011 08:28 AM, Ulrich Windl wrote:
>>> Hi!
>>>
>>> Isn't the stickyness effectively based on the failcount? We have one
>> resource
>>> that has a location constraint for one node with a weight of 500000 and a
>>> sticky ness of 100000. The resource runs on a different node and shows no
>>> tendency of moving back (not even after restarts).
>>
>> No stickiness has nothing to do with the failcount. The policy engine
>> could take both into account the stickiness (for RUNNING resources) and
>> the failcount for (RUNNING or non-running ressources).
>>
>> If you ever had a on-start-failure of a resource on a node the failcount
>> is set to infinity which means, the resource could not be started at
>> this node.
>
> fabian,
>
> I know that, and the errors were removed by "crm_resource -C". Still the 
> resource is happy where it is, and doesn't want to move away.
>
>>
>> If the policy engine needs to evaluate where to run a resource it uses
>> the location/antcolocation/cololaction constraints, failcounts,
>> stickiness and maybe some other scores to evaluate WHERE to run a resource.
>>
>> So in my opinion the stiness does exactly what you are asking for.
>
> Unfortunately someone did a manual migrate yesterday, so I cannot show the 
> scores that lead to the problem.
>
> Regards,
> Ulrich
>
>
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