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

[Andrew Beekhof]

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.

>
> 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
>
>
>
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