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Date: Fri, 19 Nov 2010 11:15:57 +0000
From: Bruce Cran <bruce@cran.org.uk>
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Cc: Coosemans <tijl@coosemans.org>, Oliver Fromme <olli@lurza.secnetix.de>,
	Dag-Erling@FreeBSD.ORG, freebsd-hackers@freebsd.org,
	Alexander Motin <mav@FreeBSD.org>, Tijl,
	Alexander Best <arundel@freebsd.org>
Subject: Re: Summary: Re: Spin down HDD after disk sync or before power off
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On Tue, 16 Nov 2010 20:40:00 +0000
Bruce Cran <bruce@cran.org.uk> wrote:

> One problem with the code that's been committed is that the shutdown
> event handler doesn't get run during a suspend operation so an
> emergency unload still gets done when running "acpiconf -s3".

Something else I noticed today: I've just got a new disk that supports
NCQ and found the kern.cam.ada.ada_send_ordered sysctl that appears to
enable/disable its use (?).   But the shutdown handler that spins
the disk down only gets initialized if ada_send_ordered is enabled. I
was wondering what the reason for this is?

-- 
Bruce Cran