[ClusterLabs] starting primitive resources of a group without starting the complete group - unclear behaviour

[Ken Gaillot]

On 04/21/2017 07:52 AM, Lentes, Bernd wrote:
> 
> 
> ----- On Apr 21, 2017, at 11:38 AM, Bernd Lentes bernd.lentes at helmholtz-muenchen.de wrote:
> 
>> ----- On Apr 21, 2017, at 1:24 AM, Ken Gaillot kgaillot at redhat.com wrote:
>>
>>> On 04/20/2017 02:53 PM, Lentes, Bernd wrote:
>>
>>>
>>> target-role=Stopped prevents a resource from being started.
>>>
>>> In a group, each member of the group depends on the previously listed
>>> members, same as if ordering and colocation constraints had been created
>>> between each pair. So, starting a resource in the "middle" of a group
>>> will also start everything before it.
> 
> Not in each case. 
> 
> 
> I tested a bit:
> target-role of the group: stopped. (This is inherited by the primitives of the group if not declared otherwise.
> If declared for the primitive otherwise this supersedes the target-role of the group.)
> 
> Starting first primitive of the group. Second primitive does not start because target-role is stopped (inherited by the group).
> 
> 
> Next test:
> 
> target-role of the group still "stopped". target-roles of the primitives not decleared otherwise.
> Starting second primitive. First primitive does not start because target-role is stopped, inherited by the group.
> Second primitive does not start because first primitive does not start, although target-role for the second primitive is started.
> Because second primitive needs first one.
> 
> Is my understanding correct ?

Yes

> 
> 
> 
> Bernd
>  
> 
> Helmholtz Zentrum Muenchen
> Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
> Ingolstaedter Landstr. 1
> 85764 Neuherberg
> www.helmholtz-muenchen.de
> Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe
> Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Heinrich Bassler, Dr. Alfons Enhsen
> Registergericht: Amtsgericht Muenchen HRB 6466
> USt-IdNr: DE 129521671