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

[Garrett Cooper]

On Tue, Nov 16, 2010 at 3:50 PM, Alexander Best <arundel at freebsd.org> wrote:
> On Wed Nov 17 10, Alexander Motin wrote:
>> Alexander Best wrote:
>> > On Tue Nov 16 10, Bruce Cran wrote:
>> >> On Fri, 22 Oct 2010 10:03:09 +0000
>> >> Alexander Best <arundel at freebsd.org> wrote:
>> >>
>> >>> so how about olivers patch? it will only apply to ata devices so it's
>> >>> garanteed not to break any other CAM devices (i'm thinking about the
>> >>> aac controller issue). you could revert your previous shutdown work
>> >>> and plug olivers patch into CAM. you might want to replace the
>> >>> combination of flush/standby immediate with sleep.
>> >> 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".
>> >
>> > unfortunately i don't think a can help you on that one. acpi never worked for
>> > me! even 'acpiconf -s1' will hopelessly crash my system. :(
>>
>> It is not necessary to have fully working suspend to work on this.
>> Bounce mode should be enough. If bounce is also not working for you - it
>> definitely should be the first thing to fix.
>
> bounce mode? sorry i'm lost.

$ sysctl debug.acpi.suspend_bounce
debug.acpi.suspend_bounce: 0