Thanks Brian and Andreas,
I think I'll start looking at the CMD code and see if I can make use of
some of it.
-Shobhit
On 4/25/07, [EMAIL PROTECTED] <
[EMAIL PROTECTED]> wrote:
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Today's Topics:
1. Re: Is it possible to introduce multiple mds servers in
lustre (Brian J. Murrell)
2. Re: Is it possible to introduce multiple mds servers in
lustre (Andreas Dilger)
----------------------------------------------------------------------
Message: 1
Date: Wed, 25 Apr 2007 11:13:29 -0400
From: "Brian J. Murrell" <[EMAIL PROTECTED]>
Subject: Re: [Lustre-devel] Is it possible to introduce multiple mds
servers in lustre
To: [email protected]
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain
On Wed, 2007-25-04 at 05:09 -0400, Shobhit Dayal wrote:
> Thanks,
> I think I see the direction we need to head in. I guess there are no
> short term hacks to get multiple mds's up
> in our environment. What we were really interested in was
> demonstrating the dynamic redistribution concept
> with as little change to lustre as possible. But I guess what you are
> saying is that it may not be possible to do that.
>
> Its also helpfull to know the fid's approach you took for managing
> inode changes.
>
> Thanks for taking so much time out, and writing such detailed mails.
> when manage to bring up something, I'll let you know :)
Shobhit,
Did you see the announcement on this list this morning by Peter Braam
about the Lustre 2.0 code branch snapshot?
That work contains the CMD (clustered metadata) code to which Andreas
has referred.
Perhaps that is a good place for you start your work.
Cheers,
b.
------------------------------
Message: 2
Date: Wed, 25 Apr 2007 09:48:07 -0600
From: Andreas Dilger <[EMAIL PROTECTED]>
Subject: Re: [Lustre-devel] Is it possible to introduce multiple mds
servers in lustre
To: "Brian J. Murrell" <[EMAIL PROTECTED]>
Cc: [email protected]
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii
On Apr 25, 2007 11:13 -0400, Brian J. Murrell wrote:
> On Wed, 2007-25-04 at 05:09 -0400, Shobhit Dayal wrote:
> > I think I see the direction we need to head in. I guess there are no
> > short term hacks to get multiple mds's up
> > in our environment. What we were really interested in was
> > demonstrating the dynamic redistribution concept
> > with as little change to lustre as possible. But I guess what you are
> > saying is that it may not be possible to do that.
> >
> > Its also helpfull to know the fid's approach you took for managing
> > inode changes.
> >
> > Thanks for taking so much time out, and writing such detailed mails.
> > when manage to bring up something, I'll let you know :)
>
> Did you see the announcement on this list this morning by Peter Braam
> about the Lustre 2.0 code branch snapshot?
>
> That work contains the CMD (clustered metadata) code to which Andreas
> has referred.
>
> Perhaps that is a good place for you start your work.
I was just going to say the same thing. Starting with the CMD code you
can likely tune the MDT distribution algorithms (which AFAIK is your
main goal) and we'd be happy to see any results you produce on different
algorithms for this.
Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.
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