linux-kernel - Re: [PATCH] Allow userspace block device implementation

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Message-ID: <4A6E529B.9030104@kernel.org>
Date:	Tue, 28 Jul 2009 10:21:31 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Zachary Amsden <zamsden@...hat.com>,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	axboe@...nel.dk, hch@...radead.org, akpm@...ux-foundation.org,
	Paul.Clements@...eleye.com, tytso@....edu,
	miklos <miklos@...redi.hu>
Subject: Re: [PATCH] Allow userspace block device implementation

Hello,

Alan Cox wrote:
>> Somehow this made me think of FUSE/CUSE... should this be named aBUSE?
>> Oh wait it is :-), what I'm after is I guess is, can we share some of
>> the FUSE/CUSE code?
> 
> It reminds me of the existing and perfectly functional network block
> device (nbd) we already have and which has also been present for years.

Yeah, I think this is the biggest hurdle against (a)BUSE.  Is it
sufficiently different from nbd?  nbd-like functionality can be
implemented something via FUSE and maybe it can be said that things
are cleaner that way but nbd has been in the kernel for a long time
now and it's definitely much easier to do swap over it when the whole
thing is in kernel.

Thanks.

-- 
tejun
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