linux-kernel - Re: [fuse-devel] [PATCHSET] CUSE: implement CUSE

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Date:	Mon, 01 Sep 2008 09:20:19 +0200
From:	Goswin von Brederlow <goswin-v-b@....de>
To:	Mike Hommey <mh@...ndium.org>
Cc:	Tejun Heo <tj@...nel.org>, fuse-devel@...ts.sourceforge.net,
	greg@...ah.com, linux-kernel@...r.kernel.org, miklos@...redi.hu
Subject: Re: [fuse-devel] [PATCHSET] CUSE: implement CUSE

Mike Hommey <mh@...ndium.org> writes:

> On Sat, Aug 30, 2008 at 02:30:32PM +0200, Tejun Heo wrote:
>> Yeah, compared to loopback over FUSE, anything would have less
>> problem. :-) I don't know much about nbd but it's pretty much solving
>> the same problem so I think it's logical to extend nbd including
>> giving it a new transport if necessary?  Or is there something
>> fundamentally better when it's done via FUSE?
>
> My gutt feeling is that it would have less overhead when done via FUSE
> than through nbd, but that could be wrong.
>
> Mike

What I would hope is that BUSE would add some zero copy transport in
there. A way to just redirect the BIOs from the BUSE device to other
block devices without copying the data around.

But maybe BUSE is a bad name for that. That would be more a DUSE -
Device mapper in USEr space.

MfG
        Goswin.
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