From: "Stephen C. Tweedie" <sct@redhat.com>
To: Jens Axboe <axboe@suse.de>
Cc: David Balazic <david.balazic@uni-mb.si>,
torvalds@transmeta.com,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Stephen Tweedie <sct@redhat.com>
Subject: Re: scsi vs ide performance on fsync's
Date: Wed, 7 Mar 2001 13:51:35 +0000 [thread overview]
Message-ID: <20010307135135.B3715@redhat.com> (raw)
In-Reply-To: <3AA53DC0.C6E2F308@uni-mb.si> <20010306213720.U2803@suse.de>
In-Reply-To: <20010306213720.U2803@suse.de>; from axboe@suse.de on Tue, Mar 06, 2001 at 09:37:20PM +0100
Hi,
On Tue, Mar 06, 2001 at 09:37:20PM +0100, Jens Axboe wrote:
>
> SCSI has ordered tag, which fit the model Alan described quite nicely.
> I've been meaning to implement this for some time, it would be handy
> for journalled fs to use such a barrier. Since ATA doesn't do queueing
> (at least not in current Linux), a synchronize cache is probably the
> only way to go there.
Note that you also have to preserve the position of the barrier in the
elevator queue, and you need to prevent LVM and soft raid from
violating the barrier if different commands end up being sent to
different disks.
--Stephen
next prev parent reply other threads:[~2001-03-07 13:55 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-06 19:42 scsi vs ide performance on fsync's David Balazic
2001-03-06 20:37 ` Jens Axboe
2001-03-07 13:51 ` Stephen C. Tweedie [this message]
2001-03-07 14:12 ` Jens Axboe
2001-03-07 15:05 ` Stephen C. Tweedie
2001-03-07 18:51 ` Jens Axboe
2001-03-07 19:10 ` Stephen C. Tweedie
2001-03-07 20:15 ` Jens Axboe
2001-03-07 20:56 ` Stephen C. Tweedie
2001-03-07 20:59 ` Jens Axboe
2001-03-08 15:45 ` Chris Mason
[not found] <1epyyz1.etswlv1kmicnqM%smurf@noris.de>
2001-03-09 6:59 ` Matthias Urlichs
2001-03-09 11:51 ` Jens Axboe
2001-03-09 14:26 ` Matthias Urlichs
-- strict thread matches above, loose matches on Subject: below --
2001-03-07 12:47 David Balazic
2001-03-06 17:14 David Balazic
2001-03-06 17:46 ` Gregory Maxwell
2001-03-06 18:23 ` Jonathan Morton
2001-03-06 23:27 ` Mark Hahn
2001-03-06 5:27 Douglas Gilbert
2001-03-06 5:45 ` Linus Torvalds
2001-03-06 7:12 ` Andre Hedrick
2001-03-06 12:09 ` Alan Cox
2001-03-06 18:44 ` Linus Torvalds
2001-03-07 13:48 ` Stephen C. Tweedie
2001-03-07 14:13 ` Jens Axboe
2001-03-12 18:50 ` Andre Hedrick
2001-03-06 13:50 ` Mike Black
2001-03-06 16:02 ` Jeremy Hansen
2001-03-07 18:27 ` Jeremy Hansen
2001-03-07 18:36 ` Linus Torvalds
2001-03-08 11:06 ` Stephen C. Tweedie
2001-03-06 16:57 ` Jonathan Morton
2001-03-06 6:43 ` Jonathan Morton
2001-03-06 13:03 ` dean gaudet
2001-03-06 13:15 ` dean gaudet
2001-03-06 13:45 ` Jonathan Morton
[not found] <Pine.LNX.4.33L2.0103021033190.6176-200000@srv2.ecropolis.com>
[not found] ` <054201c0a33d$55ee5870$e1de11cc@csihq.com>
2001-03-04 20:10 ` Douglas Gilbert
2001-03-04 21:28 ` Ishikawa
2001-03-06 0:11 ` Douglas Gilbert
2001-03-02 17:42 Jeremy Hansen
2001-03-02 18:39 ` Steve Lord
2001-03-02 19:17 ` Chris Mason
2001-03-02 19:25 ` Steve Lord
2001-03-02 19:27 ` Jeremy Hansen
2001-03-02 19:38 ` Chris Mason
2001-03-02 19:41 ` Steve Lord
2001-03-05 13:23 ` Andi Kleen
2001-03-02 19:25 ` Andre Hedrick
2001-03-03 1:55 ` Dan Hollis
2001-03-02 20:56 ` Linus Torvalds
2001-03-06 2:13 ` Jeremy Hansen
2001-03-06 2:25 ` Linus Torvalds
2001-03-06 3:30 ` Jonathan Morton
2001-03-06 4:05 ` Linus Torvalds
2001-03-06 7:03 ` Andre Hedrick
2001-03-06 8:24 ` Jonathan Morton
2001-03-06 12:22 ` Rik van Riel
2001-03-06 14:08 ` Jonathan Morton
2001-03-07 16:50 ` Pavel Machek
2001-03-06 19:41 ` Andre Hedrick
2001-03-07 5:25 ` Jonathan Morton
2001-03-07 6:58 ` Andre Hedrick
2001-03-09 11:39 ` Jonathan Morton
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