You ignored my main point, I was talking about the server side, my point
was that there is nothing to build on on the serve side since the pNFS
Linux server is not happening.
Marc.
From:
Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
To:
Marc Eshel <eshel@xxxxxxxxxxxxxxx>
Cc:
Peng Tao <bergwolf@xxxxxxxxx>, bhalevy@xxxxxxxxxx, Boaz Harrosh
<bharrosh@xxxxxxxxxxx>, Garth Gibson <garth@xxxxxxxxxxx>, Fred Isaman
<iisaman@xxxxxxxxxx>, linux-nfs@xxxxxxxxxxxxxxx, Matt Benjamin
<matt@xxxxxxxxxxxx>
Date:
11/29/2011 04:08 PM
Subject:
Re: [PATCH 0/4] nfs41: allow layoutget at pnfs_do_multiple_writes
On Tue, 2011-11-29 at 15:49 -0800, Marc Eshel wrote:
> The only 1 cent that I can add to this argument is that I was led to
> believe by you and others that Linux kernel don't add functionality on
the
> client side that is not supported on the server side. Last time I made
> this point I was told that it is ok if they are of by a version or two.
> You made it clear that this is no longer true and that the Linux client
> and server are now independent of each other. I spent time working on
the
> server side believing that the client and server will progress more or
> less together, disappointed to find out that it is not the case any
more.
> Marc.
I don't know how to manage layout segments in a way that meets the pNFS
goals of scalability and performance, and neither you nor the pNFS spec
have told me how to do this.
If IBM wants a client that implements layout segments, then it is _your_
responsibility to:
A. Convince me that it is an implementable part of the spec.
B. Provide me with an implementation that deals all with the
concerns that I have.
IOW: nobody has ever promised IBM that the community would do all your
client work for you. EMC, NetApp and Panasas have implemented (most of)
the bits that they cared about; any bits that they haven't implemented
and that you care about are up to you.
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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