[Pacemaker] Ordering and Colocation

[Curtis]

On 15/08/11 10:23, Curtis wrote:
> Greetings,
> I've been wrestling with this configuration for a few days now as I
> slowly climb the learning curve of Pacemaker.


Further details [sorry]-- versions.  All are from debian squeeze

Pacemaker: 1.0.9
Corosync: 1.2.1
Cluster Glue: 1.0.6

> My situation is as follows:
>
> I have 2 nodes, with 3 layers of resources:
> drbd->lvm->publish
>
> They must run on both nodes, but each service is dependant only on those
> on the same node.
>
> If drbd is not Master, lvm can't start.
> If lvm isn't started, publish can't start.
>
> Now, from talking with beekhof on IRC, All I need is ordering and
> colocation. This has worked for bringing it up, but when I, say, stop
> LVM... the publishing doesn't stop.
>
> Config [sorry if XML is preferred]:
>
> primitive drbd_prim ocf:linbit:drbd \
> params drbd_resource="raid"
> primitive lvm_prim ocf:heartbeat:LVM \
> params volgroupname="raid"
> primitive publish_prim ocf:iomax:scst \
> prams ....
> ms drbd drbd_prim \
> meta master-max="2" master-node-max="1" clone-max="2" clone-node-max="2"
> notify="true"
> clone lvm lvm_prim \
> meta globally-unique="true" clone-max="2" clone-node-max="1"
> clone publish publish_prim \
> meta globally-unique="true" clone-max="2" clone-node-max="1"
> colocation lvm_with_drbd inf: drbd:Master lvm
> colocation publish_with_lvm inf: lvm publish
> order drbd_then_lvm inf: drbd:promote lvm symmetrical=true
> order lvm_then_publish inf: lvm publish symmetrical=true
>
> I'd really appreciate any information on how my understanding is
> deficient, and how to get this working.
>
> --
> Curtis
>
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs:
> http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker