From: Lars Marowsky-Bree <lmb@suse.de>
To: Jens Axboe <axboe@suse.de>, Jeff Garzik <jgarzik@pobox.com>
Cc: Neil Brown <neilb@suse.de>, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: userspace block driver?
Date: Wed, 9 Nov 2005 11:12:21 +0100 [thread overview]
Message-ID: <20051109101221.GM15967@marowsky-bree.de> (raw)
In-Reply-To: <20051109075455.GN3699@suse.de>
On 2005-11-09T08:54:56, Jens Axboe <axboe@suse.de> wrote:
> > >>Has anybody put any thought towards how a userspace block driver
^^^^^^^^^
> > >>would work?
>
> I was going to say drbd, but then you did say more lightweight :-)
^^^^
drbd is implemented all in-kernel, too.
The deadlock scenarios with running block IO through user-space are
still somewhat unsolved, though. Not that block over network IO (in
particular TCP) is much better even when implemented in-kernel...
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin
"Ignorance more frequently begets confidence than does knowledge"
next prev parent reply other threads:[~2005-11-09 10:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-09 7:27 userspace block driver? Jeff Garzik
2005-11-09 7:37 ` Neil Brown
2005-11-09 7:46 ` Jeff Garzik
2005-11-09 7:54 ` Jens Axboe
2005-11-09 8:01 ` Jeff Garzik
2005-11-09 12:42 ` Paulo Marques
2005-11-09 12:54 ` Miklos Szeredi
2005-11-09 14:04 ` Miklos Szeredi
2005-11-11 0:12 ` Andrew Morton
2005-11-11 5:59 ` Miklos Szeredi
2005-11-09 10:12 ` Lars Marowsky-Bree [this message]
2005-11-09 7:50 ` Chris Wright
2005-11-09 7:55 ` Oliver Neukum
2005-11-09 8:37 ` Avi Kivity
2005-11-09 13:32 ` Jonathan Corbet
2005-11-09 20:56 ` Guennadi Liakhovetski
2005-11-12 23:42 ` Guennadi Liakhovetski
2005-11-10 13:13 ` Pavel Machek
2005-11-16 3:13 ` Michael Clark
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