Integrating iSCSI service to DRBD for iSCSI failover - Heartbeat

[sajan agr]

Hi 

I am a naive user of pacemaker and have been trying to achieve iSCSI failover on Pacemaker. I have tried couple of things though, which logically looks fine. But, I am not able to get any progress in this. So, I wanted to share this problem with you and help me sort out the problem. 

This is how my CIB file looks like : 

node $id="1c96735b-59c8-47d9-a2c6-cd2a2731d936" drbd_desk1 \ 
        attributes standby="off" 
node $id="b8c4fa16-df49-45b7-a850-cb9f65af036e" drbd_desk2 \ 
        attributes standby="off" 
primitive drbd_test ocf:linbit:drbd \ 
        params drbd_resource="r0" \ 
        op monitor interval="15s" \ 
        meta target-role="started" 
primitive ip_drbd ocf:heartbeat:IPaddr2 \ 
        params ip="192.168.30.33" nic="eth0" \ 
        meta target-role="started" 
primitive iscsiLU ocf:heartbeat:iSCSILogicalUnit \ 
        params lun="0" path="/dev/drbd0" target_iqn="iqn.2009-10.com.systems:Testme" \ 
        meta target-role="started" 
primitive iscsiTG ocf:heartbeat:iSCSITarget \ 
        params iqn="iqn.2009-10.com.systems:Testme" tid="1" \ 
        meta target-role="started" 
group drbd_group ip_drbd iscsiTG iscsiLU 
ms ms_DRBD drbd_test \ 
        meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true" 
property $id="cib-bootstrap-options" \ 
        dc-version="1.0.5-462f1569a43740667daf7b0f6b521742e9eb8fa7" \ 
        cluster-infrastructure="openais" \ 
        no-quorum-policy="ignore" \ 
        stonith-enabled="false" \ 
        default-resource-stickiness="1000" \ 
        expected-quorum-votes="2" \ 
        last-lrm-refresh="1256633765" 


crm_mon shows perfectly fine when both the nodes are up and shows all services are running. 

I powered off the master (desk2 at present), desk1 becomes master fine, but the iscsiLU resource is seen 'Stopped' at this machine. I think this service is not migrated here. 

Can anyone guide me through this ? 


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[Lars Ellenberg]

On Mon, Nov 02, 2009 at 11:40:53AM +0530, sajan agr wrote:
> Hi
>
> I am a naive user of pacemaker and have been trying to achieve iSCSI
> failover on Pacemaker.

Which is why this would be more appropriate for the pacemaker list.
Make sure you in clude the logs of the failed "takeover" attempt.

You should probably first grep yourself in those logs,
grep ERROR on the pacemaker logs do a good job usually.

Thanks,


--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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