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RE: [Linux-cluster] Remove the clusterness from GFS




> -----Original Message-----
> From: linux-cluster-bounces redhat com 
> [mailto:linux-cluster-bounces redhat com] On Behalf Of Lon Hohberger
> Sent: Monday, January 08, 2007 10:50 AM
> To: linux clustering
> Subject: Re: [Linux-cluster] Remove the clusterness from GFS
> 
> On Mon, 2007-01-08 at 10:39 -0800, Lin Shen (lshen) wrote:
> > How easy is it to
> > remove some or all of the clusterness from GFS such as 
> fencing, cman 
> > and ccsd stuff? I understand that things like dlm must stay 
> for GFS to work.
> 
> I would think it is very difficult.
> 
> You can use GFS on *one* node without a cluster.
> 
> In order to use a clustered file system, you need a cluster.  
> The cluster acts as the control mechanism for accessing the 
> file system.
> Without it, each computer accessing GFS will have no 
> knowledge of when it is safe to write to or read from the 
> file system.  This will lead to file system corruption very quickly.

I thought that's the duty of DLM. 

> 
> If you absolutely can not have a bit of "cluster software 
> running", you'll probably need to use a client/server 
> approach like NFS instead of a cluster file system like GFS.

How about Luster? It's a cluster file system, but seems to me it doesn't
require much extra cluster software.

Thanks
Lin

> 
> -- Lon
> 


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