[Pacemaker] Do I need a resource for a clustered LVM volume group or not?

[Mike Diehn]

On Wed, Dec 8, 2010 at 3:01 PM, Florian Haas <florian.haas at linbit.com>wrote:

> On 12/08/2010 04:54 PM, Mike Diehn wrote:
> >
> > Hello all.
> >
> > First post.  :-)
> >
> > I'm building a cluster for an Apache served subversion server.
>
> Why? Well I presume you must, otherwise whoever you're building this
> fore would have long switched to git or Mercurial.
>

Yes, we must.


>  > I want
> > to use OCFS2 on an LVM2 logical volume.
>
> Why why why???


Load balancing cluster.

> The PV for the volume group is
> > a SAN LAN connected to the nodes with fiber channel.
> >
> > Some examples I found showed configuring a resource with
> > ocf:heartbeat:LVM, presumably to active the volume group?  Do I need
> > that?  I ask because....
> >
> > Once the cluster gets dlm, clvm and o2cb running on a node, I can always
> > see the volume group on that node with vgscan.  Before dlm and clvm is
> > running, I can't - which makes perfect sense.
>
> Are you trying to build simple failover, and you have no requirements
> for load balancing at all?


We're load balancing.


> Make sure you configure STONITH so you can

 arbitrate access to shared storage.
>

Yep, already done.

So, do you know if we'll need a resource configured to do something with the
clustered volume group?

Thanks,
Mike

-- 
Mike Diehn
Senior Systems Administrator
ANSYS, Inc - Lebanon, NH Office
mike.diehn at ansys.com, (603) 727-5492
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