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

[Alexander Best]

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.

> 
> >From the other side ATM I see no good approach to this, as soon as CAM
> devices are not present on NewBus to handle suspend events. Unless SIM
> drivers will expose those events to CAM in some way.
> 
> -- 
> Alexander Motin

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a13x