making an ide hd sleep

making an ide hd sleep

[Marcelo Borges Ribeiro]

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

Re: making an ide hd sleep

[José Luis Domingo López]

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

-- 
José Luis Domingo López
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Re: making an ide hd sleep

[Todd Inglett]

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mini HOWTO (which is a bit out of date) has some useful advice.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

Re: making an ide hd sleep

[Kristian Peters]

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

Re: making an ide hd sleep

[Pavel Machek]

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