Summary: Re: Spin down HDD after disk sync or before power off

[Bruce Cran]

On Tue, 16 Nov 2010 20:40:00 +0000
Bruce Cran <bruce at 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