Re: SATA disc spindown

On Fri, 25 Nov 2011 13:26:13 +0100, Lou wrote:

Hallo Ramon,

Thanks for your reply Lou!


On Fri, 25 Nov 2011 11:49:42 +0000, Ramon Hofer wrote:

>Therefore I uncommented the spindown_time line and set the value to
>241 which should spin down all the drives after 30 minutes.

>To speed up testing I have set spindown_tim = 1 but the drives still
>stays active...

>Can I check the access to the discs from a log? Or maybe I should
>create a sudo hdparm -C /dev/sd? log which checks the drive states
>every 15 minutes or so?

Maybe it's just the hddtemp daemon with the temperature polls keeping
your data drive(s) awake? To find out more exactly I suggest you monitor
r/w access in syslog:

I have setup hddtemp to do nothing automatically (set interval to 0 and
don't start as daemon). So this shouldn't be the problem.


#this will put a comment about read/write access into your syslog: echo
1 > /proc/sys/vm/block_dump

#live monitoring syslog:
tail -f /var/log/syslog

#switch off syslog r/w comments:
echo 1 > /proc/sys/vm/block_dump

Hopefully this will give you the necessary hints

This is of great help!
Thanks alot!!


Btw: As you didn't write anything else hdparm should have no problem
spinning down sata drives?

And do I have to restart the system or is it enough the do a /etc/init.d/
hdparm restart?

Do you know if I can check the hdparm setting somewhere? Like hdparm -C
to show me the spindown setting?


Cheers


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