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Date: Sun, 24 Oct 2010 17:53:06 +0100
From: Bruce Cran <bruce@cran.org.uk>
To: Alexander Motin <mav@FreeBSD.org>
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Cc: Alexander Best <arundel@freebsd.org>, freebsd-scsi@freebsd.org,
	Oliver Fromme <olli@lurza.secnetix.de>, freebsd-hackers@freebsd.org
Subject: Re: Summary: Re: Spin down HDD after disk sync or before power off
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On Sun, 24 Oct 2010 19:47:57 +0300
Alexander Motin <mav@FreeBSD.org> wrote:

> Comparing two ways implementing spindown, I've recalled that both of
> them using xpt_polled_action() method, which depends on working
> controller polling operation. So they could be almost equaly not good.
> But the method present in HEAD now is more universal. Looking on fact
> that need of spindown is not so obvious for SCSI devices (in SAN
> environments), we can just make kern.cam.power_down tunable a bitmask
> of supported protocols for now. Patch is attached.

I've just committed the patch to move the functionality into ada(4).
Should it be reverted?

-- 
Bruce Cran