[Pacemaker] Dependent Resources

[Dejan Muhamedagic]

Hi,

On Wed, Jun 09, 2010 at 08:19:16AM -0500, Schaefer, Diane E wrote:
> >> Hi,
> 
> >>
> 
> >> I have a parent resource(A) with two others that depend on it (B, C). The
> 
> >> resources of B and C will not run if A is not running. I would like to
> 
> >> monitor B and C in addition to A for availability.
> 
> >>
> 
> >>
> 
> >> I defined collocation and order constraints as follows
> 
> >>
> 
> >> colocation colocation-A-B inf: B A
> 
> >> colocation colocation-C-A inf: C A
> 
> >> order order-B inf: A:start B:start
> 
> >> order order-C inf:A:start C:start
> 
> >>
> 
> >> I appear to get deadlocked. Here is the sequence
> 
> >>
> 
> >> Monitor of A reports OK
> 
> >> A goes down, causes B and C to also fail.
> 
> >> Monitor of B reports not running.
> 
> >> Start of B fails since A not running.
> 
> >> Monitor of A reports not running.
> 
> >> Start of B continues to try but never succeeds since A is not running.
> 
> >>
> 
> >>
> 
> >> I see A continues to be monitored but no action taken. The cluster seems
> 
> >> fixed on trying to start B first.
> 
> >
> 
> >> Any suggestions?
> 
> 
> 
> >Not without the rest of your config or logs I'm afraid
> 
> 
> I have a script that gathered up info on both nodes of my
> cluster.

hb_report perhaps :)

> I can send the logs and configs.  How do I get them
> to you to take a look?  Just let me know which files you would
> need.  This has happened on a few of our test clusters after
> intensive failure testing.  In this instance it is on the
> non-DC node.
> 
> Thanks for your help,
> Diane Schaefer

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