Hi, I?d like to know if it's possible to put an ide hd to sleep after (for
example) 15 min. idle (i don?t 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?
Thanks in advance,
Marcelo Ribeiro
On Thursday, 06 December 2001, at 09:23:28 -0200,
Marcelo Borges Ribeiro wrote:
> Hi, I?d like to know if it's possible to put an ide hd to sleep after (for
> example) 15 min. idle (i don?t 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?
>
man hdparm
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Marcelo Borges Ribeiro wrote:
>Hi, I?d like to know if it's possible to put an ide hd to sleep after (for
>example) 15 min. idle (i don?t 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mini HOWTO (which is a bit out of date) has some useful advice.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
Marcelo Borges Ribeiro wrote:
> Hi, I?d like to know if it's possible to put an ide hd to sleep after (for
> example) 15 min. idle (i don?t 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?
When your /var is located somewhere on /dev/hdaX probably not. My syslog makes
disc access every few seconds (strangely even without writing something..)
Disabling syslog might help, but that isn't an issue. So my drive wake up
immediately after went to sleep. But for other drives there
should be no problem.
*Kristian
Hi!
> Hi, I?d like to know if it's possible to put an ide hd to sleep after (for
> example) 15 min. idle (i don?t 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?
Get noflushd (see freshmeat). Its more clever than hdparm -S.
Pavel
--
"I do not steal MS software. It is not worth it."
-- Pavel Kankovsky