From: Chris Wedgwood <cw@f00f.org>
To: Andreas Dilger <adilger@turbolinux.com>
Cc: "Albert D. Cahalan" <acahalan@cs.uml.edu>,
Ben LaHaise <bcrl@redhat.com>,
Ragnar Kjxrstad <kernel@ragnark.vestdata.no>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
mike@bigstorage.com, kevin@bigstorage.com, linux-lvm@sistina.com
Subject: Re: [PATCH] 64 bit scsi read/write
Date: Sat, 14 Jul 2001 09:07:03 +1200 [thread overview]
Message-ID: <20010714090703.B5737@weta.f00f.org> (raw)
In-Reply-To: <200107132041.f6DKfqM8013404@webber.adilger.int>
In-Reply-To: <200107132041.f6DKfqM8013404@webber.adilger.int>
On Fri, Jul 13, 2001 at 02:41:52PM -0600, Andreas Dilger wrote:
Yes, RAID should have a journal or other ordering enforcement, but
it really isn't any worse in this regard than a single disk. Even
on a single disk you don't have any guarantees of data ordering,
so if you change the file and the power is lost, some of the
sectors will make it to disk and some will not => fsck, with
possible data corrpution or loss.
How so? On a single disk you can either disable write-caching or for
SCSI disks you can use barriers of sorts.
At which time, you can either assume a sector is written or not.
--cw
next prev parent reply other threads:[~2001-07-13 21:07 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-01 4:53 [RFC][PATCH] first cut 64 bit block support Ben LaHaise
2001-07-03 4:53 ` Ragnar Kjørstad
2001-07-04 2:19 ` [PATCH] 64 bit scsi read/write Ben LaHaise
2001-07-04 7:11 ` Alan Cox
2001-07-05 6:34 ` Ragnar Kjørstad
2001-07-05 7:35 ` Ben LaHaise
2001-07-13 18:20 ` Albert D. Cahalan
2001-07-13 20:41 ` Andreas Dilger
2001-07-13 21:07 ` Chris Wedgwood [this message]
2001-07-13 22:04 ` Andreas Dilger
2001-07-14 0:49 ` Jonathan Lundell
2001-07-14 12:27 ` Paul Jakma
2001-07-14 14:48 ` Chris Wedgwood
2001-07-14 15:42 ` Paul Jakma
2001-07-14 17:18 ` Chris Wedgwood
2001-07-20 17:03 ` Stephen C. Tweedie
2001-07-16 18:53 ` Andreas Dilger
2001-07-16 19:13 ` Ragnar Kjørstad
2001-07-13 21:14 ` Alan Cox
2001-07-14 3:23 ` Andrew Morton
2001-07-14 8:45 ` Alan Cox
2001-07-14 14:50 ` Chris Wedgwood
2001-07-14 15:41 ` Jonathan Lundell
2001-07-14 17:00 ` Chris Wedgwood
2001-07-14 20:11 ` Daniel Phillips
2001-07-15 1:21 ` Andrew Morton
2001-07-15 1:53 ` Daniel Phillips
2001-07-15 3:36 ` Chris Wedgwood
2001-07-15 6:05 ` John Alvord
2001-07-15 6:07 ` Chris Wedgwood
2001-07-15 13:16 ` Ken Hirsch
2001-07-15 14:50 ` Chris Wedgwood
2001-07-15 22:14 ` Daniel Phillips
2001-07-17 0:31 ` Juan Quintela
2001-07-15 13:44 ` Daniel Phillips
2001-07-15 14:39 ` Chris Wedgwood
2001-07-15 15:06 ` Jonathan Lundell
2001-07-15 15:22 ` Chris Wedgwood
2001-07-15 17:44 ` Jonathan Lundell
2001-07-15 17:47 ` Justin T. Gibbs
2001-07-15 23:14 ` Rod Van Meter
2001-07-16 0:37 ` Jonathan Lundell
2001-07-16 15:11 ` Rod Van Meter
2001-07-16 8:56 ` Chris Wedgwood
2001-07-16 13:19 ` Daniel Phillips
2001-07-15 15:32 ` Alan Cox
2001-07-15 15:33 ` Chris Wedgwood
2001-07-15 16:24 ` Chris Wedgwood
2001-07-16 1:08 ` Albert D. Cahalan
2001-07-16 8:49 ` Chris Wedgwood
2001-07-21 19:18 ` Alexander Griesser
2001-07-22 3:52 ` Albert D. Cahalan
2001-07-23 14:41 ` Daniel Phillips
2001-07-24 4:29 ` Albert D. Cahalan
2001-07-24 11:45 ` Daniel Phillips
2001-07-14 17:33 ` Jonathan Lundell
2001-07-15 4:02 ` Chris Wedgwood
2001-07-15 5:46 ` Jonathan Lundell
2001-07-15 17:10 ` Chris Wedgwood
2001-07-15 17:39 ` Jonathan Lundell
2001-07-26 2:18 ` Ragnar Kjørstad
2001-07-26 16:24 ` Andreas Dilger
2001-08-10 19:42 ` Ben LaHaise
2001-08-10 19:51 ` Ragnar Kjørstad
2001-08-10 20:02 ` Ben LaHaise
2001-08-11 0:18 ` Steve Lord
2001-08-11 21:44 ` Matti Aarnio
2001-07-04 10:16 ` [RFC][PATCH] first cut 64 bit block support Chris Wedgwood
2001-07-04 16:59 ` Ben LaHaise
-- strict thread matches above, loose matches on Subject: below --
2001-07-14 15:08 [PATCH] 64 bit scsi read/write Ed Tomlinson
2001-07-19 7:35 [PATCH] 64 bit SCSI read/write Andre Hedrick
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