linux-kernel - Re: Disk spin down issue on shut down/suspend to disk

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Date:	Mon, 06 Aug 2007 16:50:15 +0200
From:	Michael Sedkowski <sedmich@...il.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Tejun Heo <htejun@...il.com>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: Disk spin down issue on shut down/suspend to disk

Dnia 06-08-2007, Pn o godzinie 11:23 -0300, Henrique de Moraes Holschuh
napisał(a):
> On Mon, 06 Aug 2007, Tejun Heo wrote:
> > Cc'ing Henrique.  Any ideas?
> 
> Check if /etc/init.d/halt is calling halt(8) with the -h flag.  If it is,
> remove that -h flag.  Usually, there is a hddown variable that holds it, you
> just need to get rid of it.
> 
> I don't know anything about a Sidux, though.

Well there is an -h variable:
# Don't shut down drives if we're using RAID.
	hddown="-h"
	if grep -qs '^md.*active' /proc/mdstat
	then
		hddown=""
	fi
....
log_action_msg "Will now halt"
	halt -d -f $netdown $poweroff $hddown
However removing it has no effect, the drive still spins down two times.

Sidux is a Debian Unstable based distro with it's own set of patches
including the shut down patch provided here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=426224

Michael

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