From: Xavier Bestel <xavier.bestel@free.fr>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jeff Garzik <jgarzik@pobox.com>,
Bernd Eckenfels <ecki-news2004-05@lina.inka.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux SATA RAID FAQ
Date: Sun, 15 Aug 2004 22:54:02 +0200 [thread overview]
Message-ID: <1092603242.7421.6.camel@nomade> (raw)
In-Reply-To: <1092520163.27405.11.camel@localhost.localdomain>
Le sam 14/08/2004 à 23:49, Alan Cox a écrit :
> > > * Caching
>
> Is it battery backed ? If it is battery backed then its useful, if not
> then it becomes less useful although not always. The i2o drivers have
> some ioctls so you can turn on writeback caching even without battery
> backup. While this is suicidal for filesytems its just great for swap..
Isn't sufficient to have it do ordered writes ? If you power your
machine off, you'll have things half-written anyway, the only thing
important with journaled filesystems (and raid5 arrays) is to have
writes staying between barriers.
Xav
next prev parent reply other threads:[~2004-08-15 20:54 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-12 6:33 Linux SATA RAID FAQ Jeff Garzik
2004-08-12 7:18 ` Michael Knigge
2004-08-12 11:17 ` Paul Ionescu
2004-08-12 11:17 ` Paul Ionescu
2004-08-12 11:34 ` Willy Tarreau
2004-08-12 13:38 ` Bernd Eckenfels
2004-08-12 12:56 ` Alan Cox
2004-08-12 17:23 ` Jeff Garzik
2004-08-12 17:30 ` Jeff Garzik
2004-08-14 21:49 ` Alan Cox
2004-08-14 22:56 ` Jeff Garzik
2004-08-15 20:54 ` Xavier Bestel [this message]
2004-08-15 20:51 ` Alan Cox
2004-08-15 22:02 ` Bernd Eckenfels
2004-08-15 21:42 ` Jakob Oestergaard
2004-08-16 22:06 ` Andrew Morton
2004-08-16 21:58 ` Alan Cox
2004-08-16 22:10 ` Christoph Hellwig
2004-08-12 14:01 ` Alistair John Strachan
2004-08-14 0:31 ` J. Ryan Earl
2004-08-14 3:17 ` Mark Lord
2004-08-14 6:37 ` age huisman
2004-08-14 11:03 ` Mark Lord
2004-08-14 15:21 ` Alan Cox
2004-08-14 22:28 ` J. Ryan Earl
2004-08-12 18:09 ` Martin Schlemmer
-- strict thread matches above, loose matches on Subject: below --
2004-08-12 13:46 Dieter Stueken
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