Hi,

On Tue, Mar 11, 2008 at 11:56:07AM +0100, Andreas Kurz wrote:
> On Tue, Mar 11, 2008 at 11:02 AM, Sebastian Reitenbach
> <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> >  I want to achieve the following:
> >  I have two groups of resources, these shall run on the same host, and
> >  startup in a given order.
> >
> >  Therefore I created an order and an collocation constraint.
> >  So group1 starts before group2, and the collocation says, if group1 is not
> >  able to run on a node, group2 will not start.
> >
> >  However, if all resources in group1 are started, then the resources in
> >  group2 are started too. But when I then shutdown any single resource in
> >  group1, then group2 stops working too.
> >  I am not sure, whether my collocation or order is the reason for the
> >  observed behavior.
> 
> I have not tried it by myself but there are these "Advisory-Only
> Ordering" constraints:
> 
> <rsc_order id="orderid" from="res2" to="res1" score="0"/>

Good advice. Though even when all of the group1 is stopped,
group2 won't stop either.

> ... have a look at Andrews Pacemaker manual ...
> http://www.clusterlabs.org/wiki/images/f/fb/Configuration_Explained.pdf
> 
> Regards,
> Andreas
> 
> >
> >  Right now, from what I observed, it seems, that when I stop just one
> >  resource in the group, then the group itself is seen as stopped, and the
> >  group2 stops then too.

Well, this sounds logical to me.

> >  My question is, is there a parameter or something to keep the group
> >  as "started", until all resources in the group, or the group completely is
> >  set to be stopped? is that possible?
> >
> >  Otherwise I'd have use very many single resources, and very many order and
> >  collocation constraints.

Or rethink the strategy. Perhaps show the services you have in mind.

If the case is plausible, then the crm should be improved.

Thanks,

Dejan

> >  cheers
> >  Sebastian
> >
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> >
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