[arch-general] harddisk suspending far to often

[G. Schlisio]

Am 06.12.2012 21:07, schrieb Jonathan Steel:
> On Thu, Dec 06, 2012 at 10:59:27AM +0100, G. Schlisio wrote:
>>> after updating my laptop today [0] (no testing enabled) i notice
>>> that my harddisk keeps spinning down and up every 10 seconds or
>>> so.
>>> might this be related to the update or where can i stop this?
>> somehow it resolved itself today. now hdd is running continuously again.
> If it happens again, you can check this with:
>
> hdparm -B /dev/sdx
>
> If it's spinning down too often, try:
>
> hdparm -B 254 /dev/sdx
>
thank you for your advice.
hdparm -B /device returns 254 to me now, thats quire expected, because 
now everything works fine.

i wonder, how/whether it could have been altered yesterday.
do programs like powertop touch those values?