Messages in this thread |  | | | Date | Sat, 21 Jun 2008 12:54:56 -0400 | | From | Mark Lord <> | | Subject | Re: hdparm -M acoustic management for sata disks? |
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Soeren Sonnenburg wrote: > > 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 ..
Ahh.. That part of the output just shows the "current setting field", which is zero (0) or "invalid" in your case. That's a display error in hdparm -- it probably shouldn't bother with that field when the feature is missing from the feature list that is given lower down in the output. (the reason it doesn't discard it today, is that early drives had the feature but didn't report it lower down.. but we can distinguish those drives by ATA version number now).
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)
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