Message-ID: <485D33A8.60200@rtr.ca>
Date: Sat, 21 Jun 2008 13:00:24 -0400
From: Mark Lord <lkml@rtr.ca>
Organization: Real-Time Remedies Inc.
User-Agent: Thunderbird 2.0.0.14 (X11/20080505)
MIME-Version: 1.0
To: Soeren Sonnenburg <kernel@nn7.de>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: hdparm -M acoustic management for sata disks?
References: <1214043295.17302.16.camel@localhost>  <485D098E.3080109@rtr.ca> <1214066456.18959.6.camel@localhost> <485D3260.20301@rtr.ca>
In-Reply-To: <485D3260.20301@rtr.ca>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1168
Lines: 46

Mark Lord wrote:
>..
> Here's hdparm-8.9 on a drive that *does* support the feature:
> 
> 
> $ hdparm -I /dev/sda | grep Acoustic
>           *    Automatic Acoustic Management feature set
> 
> $ hdparm -M /dev/sda
> 
> /dev/sda:
> acoustic      = 254 (128=quiet ... 254=fast)
> 
> $ hdparm -M128 /dev/sda
> 
> /dev/sda:
> setting acoustic management to 128
> acoustic      = 128 (128=quiet ... 254=fast)
> 
> $ hdparm -M254 /dev/sda
> 
> /dev/sda:
> setting acoustic management to 254
> acoustic      = 254 (128=quiet ... 254=fast)
..

And one more:

$ hdparm -M0 /dev/sda

/dev/sda:
 setting acoustic management to 0
 acoustic      = 254 (128=quiet ... 254=fast)

$ hdparm -I /dev/sda | grep -i acoustic
        Recommended acoustic management value: 128, current value: 254
                Automatic Acoustic Management feature set

(the lack of a '*' on that last line indicates the feature is no longer enabled).

-ml
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/