Re: making an ide hd sleep

From: Todd Inglett (tinglett@chartermi.net)
Date: Thu Dec 06 2001 - 09:52:24 EST


Marcelo Borges Ribeiro wrote:

>Hi, Iīd like to know if it's possible to put an ide hd to sleep after (for
>example) 15 min. idle (i donīt know if an hd under linux stays idle that
>amount of time. ). I tried mount -o noatime and hdparm -S 150 /dev/hda, but
>it seems that when it sleeps it starts working after a few seconds (when it
>sleeps!). Is there a way to have this feature under linux?
>
This is more difficult that it sounds. Section 4 of the Battery-Powered
mini HOWTO (which is a bit out of date) has some useful advice. You are
doing it right...but something is touching the filesystem (or swap) on
the drive. It would be nice if there would be some way of enabling
logging to say what process touched the filesystem. Of course the
logging itself would touch the filesystem (on a laptop :)).

  http://www.linuxdoc.org/HOWTO/mini/Battery-Powered-4.html

-todd

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This archive was generated by hypermail 2b29 : Fri Dec 07 2001 - 21:00:33 EST