[Pacemaker] Clone resource dependency issue - undesired restart of dependent resource

[Ron Kerry]

On Wed, 9 Mar 2011 11:26:17 Andrew Beekhof wrote:
>You didn't mention a version number... I think you'll be happier with
 > 1.1.5 (I recall fixing a similar issue).

This is SLE11-HAE-SP1 so the version of pacemaker is 1.1.2.

Can you point to a specific modset I can pass back to Novell. I already have an open support request 
with them.

On Mon, Feb 28, 2011 at 8:33 PM, Ron Kerry <rkerry at sgi.com> wrote:
 > Folks -
 >
 > I have a configuration issue that I am unsure how to resolve. Consider the
 > following set of resources.
 >
 > clone rsc1-clone rsc1 \
 > ?meta clone-max="2" target-role="Started"
 > primitive rsc1 ...
 > primitive rsc2 ... meta resource-stickiness="1"
 > primitive rsc3 ... meta resource-stickiness="1"
 >
 > Plus the following constraints
 >
 > colocation rsc2-with-clone inf: rsc2 rsc1-clone
 > colocation rsc3-with-clone inf: rsc3 rsc1-clone
 > order clone-before-rsc2 : rsc1-clone rsc2
 > order clone-before-rsc3 : rsc1-clone rsc3
 >
 >
 > I am getting the following behavior that is undesirable.
 >
 > During normal operation, a copy of the rsc1 resource is running on my two
 > systems with rs2 and rsc3 typically running split between the two systems.
 > The rsc2 & rsc3 resources are operationally dependent on a copy of rsc1
 > being up and running first.
 >
 > ? SystemA ? ? ? ? ? ? SystemB
 > ? ======= ? ? ? ? ? ? =======
 > ? ? rsc1 ? ? ? ? ? ? ? ?rsc1
 > ? ? rsc2 ? ? ? ? ? ? ? ?rsc3
 >
 > If SystemB goes down, then rsc3 moves over to SystemA as expected
 >
 > ? SystemA ? ? ? ? ? ? SystemB
 > ? ======= ? ? ? ? ? ? =======
 > ? ? rsc1 ? ? ? ? ? ? ? ?X X
 > ? ? rsc2 ? ? ? ? ? ? ? ? X
 > ? ? rsc3 ? ? ? ? ? ? ? ?X X
 >
 > When SystemB comes back into the cluster, crmd starts the rsc1 clone on
 > SystemB but then also restarts both rsc2 & rsc3. This means both are stopped
 > and then both started again. This is not what we want. We want these
 > resources to remain running on SystemA until one of them is moved manually
 > by an administrator to re-balance them across the systems.
 >
 > How do we configure these resources/constraints to achieve that behavior? We
 > are already using resource-stickiness, but that is meaningless if crmd is
 > going to be doing a restart of these resources.
 >

-- 

Ron Kerry         rkerry at sgi.com
Global Product Support - SGI Federal
Home Office: 248 375-5671  Cell: 248 761-7204

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