[Lustre-discuss] lustre interoperability

[Jerome, Ron]

Just for the record...
 
I successfully upgraded from 1.6.0.1 to 1.6.3 in a single step without issue.  
 
Thanks to all who provided input on this.
 
Ron.

________________________________

From: lustre-discuss-bounces at clusterfs.com on behalf of Jerome, Ron
Sent: Thu 10/18/2007 9:33 PM
To: lustre-discuss at clusterfs.com
Subject: Re: [Lustre-discuss] lustre interoperability


Thanks Andreas,
 
So I guess that means I can give it a try and hope for the best :-) or would I be wiser to go step by step given this is a production system serving 32 TB?
 
Ron.

________________________________

From: lustre-discuss-bounces at clusterfs.com on behalf of Andreas Dilger
Sent: Thu 10/18/2007 5:56 PM
To: Jerome, Ron
Cc: lustre-discuss at clusterfs.com
Subject: Re: [Lustre-discuss] lustre interoperability



On Oct 18, 2007  10:49 -0400, Jerome, Ron wrote:
> Could somebody (Andreas maybe :) give a definitive answer on this...
>
> > > Having said that, I believe 1.6.0 and 1.6.3 is actually something
> that
> > > will work, but I'm not 100% certain of this, so I'll allow others to
> > > correct me.
>
> ... as I would like to do just this, go from 1.6.0.1 to 1.6.3 and would
> rather not have to go through the intermediate versions if I don't have
> to.

I'm not aware of any incompatibilities between 1.6.0 and 1.6.3, and we
have a good mechanism to handle protocol negotiation when we add features
to Lustre (since 1.4.2).  That said, we can't possibly do an all-to-all
test matrix, so we only test against the previous minor version (1.6.3
against 1.6.2) and the upgrade from the most recent major version (1.4.12).

There have been no changes to the on-disk format since 1.4 days (excluding
the config logs) that I'm aware of.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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