[Pacemaker] Having a really hard time with clvmd on RHEL 7 beta

[David Vossel]

----- Original Message -----
> From: "Digimer" <lists at alteeve.ca>
> To: "The Pacemaker cluster resource manager" <pacemaker at 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