[Linux-cluster] Upgrade from Enterprise 3 to Enterprise 4

[Matthew B. Brookover]

Thank you Bob, this looks good.

Matt
 
On Wed, 2006-05-24 at 13:18 -0500, Robert S Peterson wrote:

> Hi Matthew,
> 
> On Wed, 2006-05-24 at 11:02 -0600, Matthew B. Brookover wrote:
> > For various reasons, I am getting ready to upgrade from Enterprise 3 and
> > GFS 6.0 to Enterprise 4 and GFS 6.1.
> > 
> > The upgrade section of the GFS 6.1 administrators guide has instructions
> > to convert pools to LVM2 and says to see the Configuring and Managing a
> > Cluster guide to convert a GFS file system from GULM to DLM.  I have not
> > carefully read the Configuring and Managing a Cluster Guide, but a quick
> > scan of the index and table of contents did not reveal the instructions.
> > 
> > So, my first question, how do I switch an existing file system in GFS
> > 6.1 from GULM to DLM?
> 
> The GFS filesystem format is identical from RHEL3 to RHEL4.
> If you want to switch from GULM to DLM (a wise move), do this:
> 
> gfs_tool sb <your device> proto lock_dlm
> 
> For example:
> 
> [root at trin-12 ~]# gfs_tool sb /dev/bobs_vg/lvol0 proto lock_dlm
> 
> > The second question, what kind of experiences have people had with an
> > upgrade of a cluster from Enterprise 3 AS update 6 to Enterprise 4 AS
> > update 3?
> 
> I'm sure other people would be willing to share their stories.
> 
> > Thank you
> > 
> > Matt
> > mbrookov at mines.edu
> 
> I also recommend making a good backup or two of your fs before starting.
> 
> Regards,
> 
> Bob Peterson
> Red Hat Cluster Suite
> 
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