[linux-lvm] CLVM Questions

Jayson Vantuyl jvantuyl at engineyard.com
Fri Feb 9 11:04:21 UTC 2007

On Feb 8, 2007, at 2:53 AM, Patrick Caulfield wrote:
> I'm not sure what you mean here. You either have a cluster or you  
> don't.

> If you have clvm on one node on a cluster then it needs to be on  
> ALL nodes of
> the cluster - you can't have an isolated node that is also part of  
> the CMAN
> cluster.
I had kind of figured this out.

> If what you mean is "can I have a non-clustered Volume Group  
> alongside cluster
> volume groups", then the answer is "yes". There is a flag on the VG  
> that
> indicates whether it is clustered or not. activated with vgchange -cy,
> deactivated with vgchange -cn. You can't mark individual LVs within  
> a VG as
> clustered/non-clustered though. That wouldn't make sense.
Well, I think I have a bug to report.  When I create a vg and mark it  
as not clustered, I get locking errors when working with its LVs.

Jayson Vantuyl
Systems Architect
Engine Yard
jvantuyl at engineyard.com

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