[Pacemaker] All dependend resources are restarted when Clone Set changes status on ONE machine

[Sebastian Urban]

On Mon, 2010-02-22 at 21:12 +0100, Andrew Beekhof wrote:
> On Sat, Feb 13, 2010 at 9:14 PM, Sebastian Urban <urbans84 at gmail.com> wrote:
> > Hi.
> >
> > I have two servers (cipvm1, cipvm2) and want to configure automatic
> > failover of virtual machines (KVM via libvirt). Both servers share a
> > virtual block device via DRBD in dual primary mode. I use an OCFS2
> > filesystem for storage of the virtual machines on top of DRBD. Pacemaker
> > is in full control of DRBD, OCFS2 and the virtual machines. Everything
> > seems to run fine.
> >
> > However, let's assume that the VM "ciptest" is started on cipvm2. If
> > cipvm1 (not 2) fails or is put into standby then "ciptest" is stopped
> > and restarted on cipvm2 without any reason. I suspect that Pacemaker
> > thinks that it has to restart the Clone Set vmfs on cipvm2 and therefore
> > also restarts the VM. How can I stop Pacemaker from doing that?
> 
> In your version, change the ordering constraint to use a score of 0
> instead of inf.
> 
> I thought I had this figured out for 1.0.7, but I'm told there are
> still some corner cases.
> You might have more luck.

Okay, so it's a bug. I already work around it by taking control of OCFS2
away from Pacemaker. I will try again after it's fixed.

> 
> >
> > Here is my config:
> >
> > node cipvm1 \
> >        attributes standby="off"
> > node cipvm2 \
> >        attributes standby="off"
> > primitive ciptest ocf:heartbeat:VirtualDomain \
> >        params domain="ciptest" \
> >        meta target-role="Started" is-managed="true" \
> >        op stop interval="0" timeout="5m" \
> >        op start interval="0" timeout="5m" \
> >        op monitor interval="15s" timeout="5m"
> > primitive pri_drbd_vms ocf:linbit:drbd \
> >        params drbd_resource="vm_drbd" \
> >        operations $id="vm_drbd-operations" \
> >        op monitor interval="20" role="Master" \
> >        op monitor interval="30" role="Slave"
> > primitive pri_vmfs ocf:heartbeat:Filesystem \
> >        params device="/dev/drbd1" directory="/srv/vms" fstype="ocfs2" \
> >        op monitor interval="30s"
> > ms drbd_vms pri_drbd_vms \
> >        meta resource-stickiness="100" notify="true" master-max="2" \
> >        interleave="true" target-role="Started" is-managed="true"
> > clone vmfs pri_vmfs \
> >        meta interleave="true" ordered="true" target-role="Started"
> > colocation col_ciptest inf: ciptest vmfs:Started
> > order ord_ciptest inf: vmfs:start ciptest:start
> > property $id="cib-bootstrap-options" \
> >        dc-version="1.0.6-cebe2b6ff49b36b29a3bd7ada1c4701c7470febe" \
> >        cluster-infrastructure="openais" \
> >        expected-quorum-votes="2" \
> >        stonith-enabled="false" \
> >        no-quorum-policy="ignore" \
> >        last-lrm-refresh="1266089808"
> >
> > Many thanks,
> > Sebastian
> >
> >
> >
> > _______________________________________________
> > Pacemaker mailing list
> > Pacemaker at oss.clusterlabs.org
> > http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> >
> 
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