[Pacemaker] Shouldn't colocation -inf: be mandatory?

[Dejan Muhamedagic]

On Wed, Jun 16, 2010 at 08:54:37AM -0400, Vadym Chepkov wrote:
> 
> On Jun 15, 2010, at 3:52 PM, Dejan Muhamedagic wrote:
> 
> > On Tue, Jun 15, 2010 at 12:53:07PM -0400, Vadym Chepkov wrote:
> >> 
> >> On Jun 15, 2010, at 9:26 AM, Vadym Chepkov wrote:
> >>>>> 
> >>>>> what about this part? what do I need to do to prevent them from running on different nodes for sure?
> >>>> 
> >>>> You can't have it both ways.
> >>>> Either they have to run on the same node or they can remain active
> >>>> when one or more die.
> >>>> 
> >>>> Although you could do:
> >>>> 
> >>>> d1 ( d2 d3 d4 )
> >>>> 
> >>>> That would almost get what you want, unless d1 dies.
> >>> 
> >>> I guess I would have to keep the most significant as an anchor, I can
> >>> leave with it.
> >>> Unfortunately, as far as I understand, there is no way do define this
> >>> in shell config now, because shell adds sequential=false when it sees
> >>> ().
> > 
> > Yes it does. So, you want to have two adjacent sequential sets in
> > one constraint? Not very elegant, but I guess that this would do
> > until we figure out how to represent it:
> > 
> > colocation c1 inf: p1:Started p2 p3 p4
> > 
> > In xml:
> > 
> >      <rsc_colocation id="c1" score="500">
> >        <resource_set id="c1-0" role="Started">
> >          <resource_ref id="p1"/>
> >        </resource_set>
> >        <resource_set id="c1-1">
> >          <resource_ref id="p2"/>
> >          <resource_ref id="p3"/>
> >          <resource_ref id="p4"/>
> >        </resource_set>
> >      </rsc_colocation>
> > 
> > Thanks,
> 
> But I think it should be at the end, like this:
> 
> colocation together 500: d1 d2 anchor:Started
> 
> to use the "anchor" approach? Right?

I don't know what do you want. This was just about how to produce
two adjacent sequential resource sets.

Thanks,

Dejan

> Thanks,
> Vadym
>  
> 
> 
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