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RE: [Linux-cluster] GFS kernel patch? (and more)



 
Thanks.  I might try putting the GFS1 in the kernel tree... but quite frankly, adding bits to the kernel without a patch is a bit beyond my talents.
 
I've been using GFS2 for a project for some time.  It's GFS2 over DRBD.  The system is production, but the GFS2 filesystem on it isn't.  In fact, left mounted for a few weeks and untouched, it eventually zombies any process that tries to even 'ls' the filesystem... leading to a late night reboot.  Granted, this project has had a lot of side tracking... such as being shipped out with a fubar L2 switch.
 
I am building a second cluster for a separate project, and I can be more daring with this until it has to go production... the reason I'd like to give GFS1 a try.
 
I have used DRBD for years... but GFS/Cluster is still new to me.  To build the GFS2 volume, I followed the LinBit GFS2 documentation.  I recently looked at some of the DRBD_Cookbook and I noticed it uses fencing, whereas LinBit's doc doesn't use it.  My cluster.conf is short and sweet:
 
<?xml version="1.0"?>
<cluster name="clust" config_version="1">
<clusternodes>
<clusternode name="clust1a" nodeid="1">
</clusternode>
<clusternode name="clust1b" nodeid="2">
</clusternode>
</clusternodes>
<logging to_stderr="yes">
<logger ident="CMAN" debug="on" to_stderr="yes"/>
</logging>
</cluster>
 
Have I followed an oversimplified path?  Is it a case where I need the fencing as in the DRBD_Cookbook?  From the perspective of the LinBit GFS2 doc, Cluster is only used to get the DLM and CLVMD running.
 
Thanks in advance.
 
Stephen


> ----- "Stephen Amadei" <stephenamadei hotmail com> wrote:
> | Am I crazy or was there a GFS kernel patch that was needed to use GFS
> | with 2.6.27.x/2.03.09?
> |
> | Now it looks like GFS is only available as a kernel module. Is there a
> | way to patch this into the kernel?
> | My kernels don't run modules.
> |
> | Thanks.
> |
> | Stephen
>
> Hi Stephen,
>
> AFAIK, gfs was always a kernel module. You might be able to patch it in
> to the kernel source tree by hand, but I've never done it.
>
> There was a gfs patch to enable it to allocate files properly for newer
> kernels, such as 2.6.27.x. That was just to do a little kernel catchup
> in gfs1.
>
> On the other hand, GFS2 has been a part of the base kernel for a while
> now, although it's still not considered production ready. I think the
> version currently pulled into Linus's tree is pretty good. Steve
> Whitehouse's "nmw" git tree in kernel.org has the latest/greatest GFS2
> and should be fairly stable, although it's a moving target.
>
> Regards,
>
> Bob Peterson
> Red Hat GFS
>
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> Linux-cluster mailing list
> Linux-cluster redhat com
> https://www.redhat.com/mailman/listinfo/linux-cluster



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