DSM-G600, DNS-3xx and NSA-220 Hack Forum

Sounds good, I would like to test it. (Some additional idle CPU cycles are always welcome). Could you please be more precise on how to use the program?

Can someone give a bit more detailed instructions on how to use this script?
I typed in /path/to/fanctl /path/to/fan.conf (with the correct path) and hit enter, but there are several error messages about the /sys/class/i2c-adapter/i2c-0/0-0048/temp1_input which does not exist.

I'm using a CH3SNAS.

timschuerewegen wrote:

knireis wrote:

Can someone give a bit more detailed instructions on how to use this script?
I typed in /path/to/fanctl /path/to/fan.conf (with the correct path) and hit enter, but there are several error messages about the /sys/class/i2c-adapter/i2c-0/0-0048/temp1_input which does not exist.

I'm using a CH3SNAS.

Which vanilla kernel are you running? Maybe you should read the initial post (again).

I don't know, i thought that vanilla meant other kernels than the dlink, so including my ch3snas. But vanilla might mean something else.

timschuerewegen wrote:

Did you try fan.dns323.conf? If it does not work (due to differences between DNS-323 and CH3SNAS hardware/kernels) then I am afraid Fonz will have to update his code.

See Jimmie's post. He's got a CH3SNAS, too.

rap wrote:

Hi fonz - will this new prog of yours kill the inbuilt fan process like the other scripts you refered to?

No, you need to do that yourself.

Jimmie wrote:

A question: does this put the fan off when below low temperature? Although I never seen the temperature that low it would be neat if it's fully silenced when no one is using the device.

I think the fan stops if you set pwm_lo low enough. However, it might not start until the controller sets fanspeed a little higher than the speed at which the fan stopped.

celcius0 wrote:

My DNS 323 uses F in previous fan control script found on the wiki. Does this mean I should convert the 38000 ?

It uses F because the 'temperature' programs prints Fahrenheit on your device. fanctl doesn't use this program. I suppose the best way to check is to run 'dns323-temp'. If it prints correct values, use Millicelsius in the fanctl config.

noodle wrote:

Fan never stop to me either. I set temp_lo to 37, even temp is 32, fan speed is still 2700

Is this a question? It won't stop unless you tell it to.

noodle wrote:

I c, I thought it going to stop if temp lower than temp_lo. How can I make it like that? if temperature low than temp_lo, stop the fan?

http://dns323.kood.org/forum/p20984-Yes … tml#p20984

This fancontroller works good on my CH3SNAS. With previous fancontrol scripts, I usually had problems with disk spindown.
Initially after installing this package I lost spindown as well, but after changing the idle time interval in the webinterface from 10 to 15 and then back to 10 (with saving the setting in between) the spindown started working again. Don't know why but maybe this can help others with similar problems.

Works great.  Can I suggest an improvement though?

I'd like to also monitor the hard drive status.  If the drives are active, do not power off the fan (leave it at the pwm_lo speed).

The reason I request this is so that the fans will start cooling when the drives activate, instead of delaying until the temperature rises.

On a related note, I have recently seen the temperature and fanspeed functions fail on my device (DNS-323 FW 1.05).  This failure occured when I was playing around with other fan control scripts, so it may or mat not occur under normal circumstances.  When the functions fail, temperature always returns 0 C (or 32 F), while fanspeed returns ~2533 (the fan was off at the time).  Similarily the dns323-temp ("0 C 32 F") and dns323-fan ("2533 2533 194") commands return invalid results.  I will try to create a script to replicate this bug.

Cheers,
Dave.

DaveN wrote:

I'd like to also monitor the hard drive status.  If the drives are active, do not power off the fan (leave it at the pwm_lo speed).

I second that.

I would propose this logic:

if (isAnyDiskSpinning())
{
   currentTemp = maximum (getCurrentTemp() ; temp_lo + 0.01)
      /* so currentTemp is > temp_lo --> fan will start if not currently running and will never stop when a disk is spinning */
   spinningState = true /* remember that disks are spinning for later on */
}
else
{ /* no disk is spinning */
   currentTemp = getCurrentTemp()
   if (spinningState == true)
   {
       /* so disks have just shutdown */
       if ( currentTemp <= temp_lo)
       {
             /* Disks stopped, temp low, so turn of fan */

            setFanSpeedTo(pwm_start); sleep 30
            /* power up already running fan for 30 seconds to cool just stopped disks a bit
             * dont know if this is needed to prevent fan from starting later on, so
             * this is experimental and SHOULD be configurable :-)  */

            setFanSpeedTo(pwm_stop)  /* thus turn of fan, if pwm_stop == 0 (default) */
       }
       spinningState = false /* remember that disks are NOT spinning for later on */
   }
}

/* continue with current behavier using currentTemp as actual temperature reading */
...

This will power on the fan as soon as a disk starts spinning and power off the fan when disks are shut down and temperature allows it. The experimental bit will power up the fan prior to turning it off to cool things a litte more.

EDIT: Typo

Last edited by Loose Gravel (2008-10-31 11:27:18)