Re: SATA disc spindown

[Ramon Hofer <ramonhofer@bluewin.ch>]

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