From: "Jeff V. Merkey" <jmerkey@wolfmountaingroup.com>
To: Max Waterman <davidmaxwaterman@fastmail.co.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: io performance...
Date: Tue, 17 Jan 2006 21:30:06 -0700 [thread overview]
Message-ID: <43CDC44E.6080808@wolfmountaingroup.com> (raw)
In-Reply-To: <43CDAFE3.8050203@fastmail.co.uk>
Max Waterman wrote:
> One further question. I get these messages 'in' dmesg :
>
> sda: asking for cache data failed
> sda: assuming drive cache: write through
>
> How can I force it to be 'write back'?
Forcing write back is a very bad idea unless you have a battery backed
up RAID controller.
Jeff
>
> Max.
> -
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>
next prev parent reply other threads:[~2006-01-18 5:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-16 7:35 io performance Max Waterman
2006-01-16 7:32 ` Jeff V. Merkey
2006-01-17 13:57 ` Jens Axboe
2006-01-17 19:17 ` Jeff V. Merkey
2006-01-16 8:35 ` Pekka Enberg
2006-01-17 17:06 ` Phillip Susi
2006-01-18 7:24 ` Max Waterman
2006-01-18 15:19 ` Phillip Susi
2006-01-20 5:58 ` Max Waterman
2006-01-20 13:42 ` Ian Soboroff
2006-01-25 6:36 ` Max Waterman
2006-01-25 14:19 ` Ian Soboroff
2006-01-25 13:09 ` Bernd Eckenfels
2006-01-18 3:02 ` Max Waterman
2006-01-18 4:30 ` Jeff V. Merkey [this message]
2006-01-18 5:09 ` Max Waterman
2006-01-18 4:37 ` Jeff V. Merkey
2006-01-18 7:06 ` Max Waterman
2006-01-18 9:21 ` Alan Cox
2006-01-18 15:48 ` Phillip Susi
2006-01-18 16:25 ` Bartlomiej Zolnierkiewicz
2006-01-19 0:48 ` Adrian Bunk
2006-01-19 13:18 ` Max Waterman
[not found] <5vx8f-1Al-21@gated-at.bofh.it>
[not found] ` <5wbRY-3cF-3@gated-at.bofh.it>
[not found] ` <5wdKh-5wF-15@gated-at.bofh.it>
2006-01-19 1:58 ` Robert Hancock
2006-01-19 13:14 ` Max Waterman
2006-01-19 14:08 ` Alan Cox
2006-01-20 4:09 ` Max Waterman
2006-01-20 4:27 ` Alexander Samad
2006-01-20 12:52 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2006-01-19 11:39 Al Boldi
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