[Pacemaker] Configuring Pacemaker & DRBD

[Florian Haas]

On 2011-09-29 01:25, Cliff Massey wrote:
> 
>  I'm trying to configure Pacemaker to manage a drbd resource on a two-node RHEL 6 cluster by the following guide: http://www.clusterlabs.org/wiki/DRBD_HowTo_1.0
> 
> drbd is 8.04 and works outside of Pacemaker.

8.04? Let's hope you mean 8.4.0. :)

> My configuration is very simple:
> 
> primitive convirt_drbd ocf:linbit:drbd \
> 	params drbd_resource="convirt" \
> 	op monitor interval="59s" role="Master" timeout="30s" \
> 	op monitor interval="60s" role="Slave" timeout="30s"
> ms ms-convirt convirt_drbd \
> 	meta clone-max="2" notify="true" globally-unique="false" target-role="Started"
> property $id="cib-bootstrap-options" \
> 	dc-version="1.1.5-5.el6-01e86afaaa6d4a8c4836f68df80ababd6ca3902f" \
> 	cluster-infrastructure="Heartbeat" \
> 	expected-quorum-votes="2" \
> 	no-quorum-policy="ignore" \
> 	symmetric-cluster="false" \
> 	stonith-enabled="false"
> rsc_defaults $id="rsc-options" \
> 	resource-stickiness="200"
> 
> I start the resource by using: resource start ms-convirt.

That's kinda pointless. You don't have to do that with a Master/Slave
resource.

 However, the resource doesn't start:
> 
> drbd-overview
> drbd not loaded
> 
> Am I missing any steps?

You didn't give much additional information, so we're a bit reduced to
guesswork. My guess is that Pacemaker previously attempted to promote
the resource, failed, recorded the failcount, and you didn't clear it so
it doesn't try again. But like I said -- it's just a guess.

DRBD configuration and a CIB dump (cibadmin -Q) would be helpful, but
don't post those here -- instead upload them to pastebin, fpaste, pastie
or similar and post the link here.

The DRBD log snippet you gave in your followup post is also
inconclusive; one would expect that there are some messages prior to
"drbd0: disk( UpToDate -> Failed )". So you may want to include your
kernel log in that paste also.

Cheers,
Florian

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