linux-kernel - Re: [PATCH 00/33] Swap over NFS -v14

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Message-ID: <170fa0d20710310754h55d768bdgb67f30b54174e680@mail.gmail.com>
Date:	Wed, 31 Oct 2007 10:54:02 -0400
From:	"Mike Snitzer" <snitzer@...il.com>
To:	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>
Cc:	"Christoph Hellwig" <hch@...radead.org>,
	"David Miller" <davem@...emloft.net>, nickpiggin@...oo.com.au,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	netdev@...r.kernel.org, trond.myklebust@....uio.no,
	"Evgeniy Polyakov" <johnpol@....mipt.ru>
Subject: Re: [PATCH 00/33] Swap over NFS -v14

On 10/31/07, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> On Wed, 2007-10-31 at 08:50 +0000, Christoph Hellwig wrote:
> > On Tue, Oct 30, 2007 at 09:37:53PM -0700, David Miller wrote:
> > > Don't be misled.  Swapping over NFS is just a scarecrow for the
> > > seemingly real impetus behind these changes which is network storage
> > > stuff like iSCSI.
> >
> > So can we please do swap over network storage only first?  All these
> > VM bits look conceptually sane to me, while the changes to the swap
> > code to support nfs are real crackpipe material.
>
> Yeah, I know how you stand on that. I just wanted to post all this
> before going off into the woods reworking it all.
...
> > So please get the VM bits for swap over network blockdevices in first,
>
> Trouble with that part is that we don't have any sane network block
> devices atm, NBD is utter crap, and iSCSI is too complex to be called
> sane.
>
> Maybe Evgeniy's Distributed storage thingy would work, will have a look
> at that.

Andrew recently asked Evgeniy if his DST was ready for merging; to
which Evgeniy basically said yes:
http://lkml.org/lkml/2007/10/27/54

It would be great if DST could be merged; whereby addressing the fact
that NBD is lacking for net-vm.  If DST were scrutinized in the
context of net-vm it should help it get the review that is needed for
merging.

Mike
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