From: Ondrej Zary <linux@rainbow-software.org>
To: Soeren Sonnenburg <kernel@nn7.de>
Subject: Re: hdparm -M acoustic management for sata disks?
Date: Sat, 21 Jun 2008 20:34:22 +0200
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Cc: Mark Lord <lkml@rtr.ca>, Linux Kernel <linux-kernel@vger.kernel.org>
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On Saturday 21 June 2008 18:40:56 Soeren Sonnenburg wrote:
> On Sat, 2008-06-21 at 10:00 -0400, Mark Lord wrote:
> > Soeren Sonnenburg wrote:
> > > Dear all,
> > >
> > > why is acoustic management via hdparm not supported for sata disks?
> > >
> > > # hdparm -M /dev/sda
> > >
> > > /dev/sda:
> > >  acoustic      = not supported
> >
> > ..
> >
> > No, that means that your *drive* doesn't support it.
> > Check for yourself, with "hdparm -I /dev/sda | grep Acoustic".
>
> Just to be sure, did you mean grep acoustic (lowercase)? Because it is
> listed there under Capabilities:
> Recommended acoustic management value: 128, current value: 0
>
> I've tried with the 5 sata drives I could get my hands on, they all list
> some recommended acoustic management value but all fail the same way
>
> # hdparm -M 128 /dev/sda
>
> /dev/sda:
>  setting acoustic management to 128
>  HDIO_DRIVE_CMD:ACOUSTIC failed: Input/output error
>  acoustic      = not supported
>

Aren't they Seagate drives? They're known not to support acoustic management.

> > ..
> >
> > > Is there any patch flying around that already enables this or even any
> > > ETA in the current mainstream?
> >
> > ..
> >
> > No patch required -- hdparm (newer versions) already do this correctly.
>
> I have hdparm v8.9 here, is that new enough?
>
> Thanks for you help,
> Soeren
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-- 
Ondrej Zary
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