On 27/01/14 02:40 PM, David Vossel wrote:
----- Original Message -----
From: "Digimer" <li...@alteeve.ca>
To: "The Pacemaker cluster resource manager" <pacemaker@oss.clusterlabs.org>
Sent: Monday, January 27, 2014 12:15:23 PM
Subject: [Pacemaker] Having a really hard time with clvmd on RHEL 7 beta
Hi all,
I'm having one heck of a time trying to get clvmd working with
pacemaker 1.1.10 on RHEL 7 beta... I can configure DRBD dual-primary
just fine. I can also configure DLM to start on both nodes just fine as
well.
However, once I try to add clvmd using lsb::clvmd, the cluster fails
randomly.
Here is the good config:
<snip/>
Looking at your config, unless I'm missing something I don't see ordering constraints between dlm
and clvmd. You need the "start dlm-clone then start clvmd-clone" order constraint as
well as a "colocate clvmd-clone with dlm-clone" colocation constraint. Otherwise, you
are going to run into random start and stop errors.
Even after you do this, you may still have problems. The lsb:clvmd init script
performs some unnecessary blocking operations during the 'status' operation. I
have a patch attached to this issue,
https://bugzilla.redhat.com/show_bug.cgi?id=1040670 , that should resolve that
issue if you hit it.
Hope that helps :)
-- Vossel
I think you nailed it. I deleted the old clvmd resource and recreated it
with:
pcs cluster cib clvmd_cfg
pcs -f clvmd_cfg resource create clvmd lsb:clvmd params
daemon_timeout=30s op monitor interval=60s
pcs -f clvmd_cfg resource clone clvmd clone-max=2 clone-node-max=1
pcs -f clvmd_cfg constraint colocation add dlm-clone clvmd-clone INFINITY
pcs -f clvmd_cfg constraint order start dlm then start clvmd-clone
pcs cluster cib-push clvmd_cfg
So far, I've been able to start and stop the clvmd resource reliably!
And so the learning continues... :)
Thanks!!
--
Digimer
Papers and Projects: https://alteeve.ca/w/
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