[Pacemaker] Using SCSI reservations with Pacemaker

[Max Williams]

Hi Florian,
I've installed the sg_persist RA, configured it and it works as expected with a Netapp iSCSI LUN, excellent!

Here is my configuration:
primitive scsi_reservation ocf:heartbeat:sg_persist params sg_persist_resource="scsi_reservation0" devs="/dev/dm-6 /dev/dm-7" required_devs_nof="2" reservation_type=1
ms ms_scsi_reservation scsi_reservation meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true"
colocation service_on_scsi_reservation inf: Service_group ms_scsi_reservation:Master
order service_after_scsi_reservation inf: ms_scsi_reservation:promote Service_group:start

My "Service_group" is a group consisting of a IP addresses, file systems, LVMs and init scripts.
Is this configuration correct? Is sg_persist_resource just an arbitrary name?
I am not using a config file for sg_persist.

Thanks,
Max

-----Original Message-----
From: Max Williams [mailto:Max.Williams at betfair.com] 
Sent: 06 May 2011 09:27
To: The Pacemaker cluster resource manager; Evgeny Nifontov
Subject: Re: [Pacemaker] Using SCSI reservations with Pacemaker

OK will do.
Cheers,
Max

-----Original Message-----
From: Florian Haas [mailto:florian.haas at linbit.com]
Sent: 06 May 2011 08:25
To: The Pacemaker cluster resource manager; Evgeny Nifontov
Subject: Re: [Pacemaker] Using SCSI reservations with Pacemaker

Hi Max,

On 2011-05-05 18:39, Max Williams wrote:
> I did see this message:
> 
> http://www.gossamer-threads.com/lists/linuxha/dev/71556
> 
> Anyone used this RA in a production system?

We are _extremely_ keen on getting user feedback on that resource agent, as it is functionality that we've wanted to have in Pacemaker for a long time. So if you can give that RA a spin and report back, that would be most appreciated.

Thanks!
Cheers,
Florian


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