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

Thanks for reply, it looks like a kernel bug. Probably I need to disable fan control. Let's see.

Noodle

skydreamer wrote:

I am going to modify the fancontrol script to run the fan at 3500 rpm when the temperature reading is zero.

I *think* that it's not possible to set the fan speed when the temperature is zero. Both temperature and fanspeed commands seem to run over the same TWSI (Two Wire Serial Interface) and data registers attached to it. In my opinion the register logic needs to be reset. I have no idea if this is possible.

Is it possible that the fancontrol script tries to write a value to the TWSI to adjust the fanspeed directly after it reads a temperature? Or is there a delay (sleep) in the script between any temperature reads and fan control writes?

Last edited by EnricoM (2008-07-11 17:06:27)

I am not familiar with the fan control script, so I can not confirm that. Maybe you can force to send 0's and check what happens.

I don't think log is an issue. Actually, I disabled fan control log, no log at all, but it still happens. 2000RPM is enough if your HD spin down, however when I was using HD, HD went really hot, because FAN speed cannot change anymore. Anyway, I'm using a crontab job to monitor temperature reading for every 10 minutes. I'm thinking to change the script if temperature becomes 0, after 30 minutes, I will shutdown NAS. Hope this can be fixed.

BTW, I never this problem when I was using fw 1.04 and fonz 0.3. When you get this problem, which fw and fun_plug are you using? Could this be a bug in new firemware (1.05) ?

If there really is a bug that is causing the fan control script to fail, it might be prudent to move / remove the script on the wiki until the issue can be tracked down.

FYI: I am running the modified fanctrl.sh script that does not turn off the fan but keeps it running at 2,000 r.p.m. and after one week the temperature reading is still OK on both DNS-323.

knireis wrote:

If you leave the fan running all the time at minimum 200 rpm, why install the fanspeed script? The standard firmware will keep it running also at minimum rpm when temperature is low.

Oh well, then I can disable the script. I have modded the DNS-323 so extensively that the fan is barely noticeable even when running at a high speed.

Any update on this error? Its happened pretty frequently now, almost once per day.

CH3SNAS: This error seems to be fixed in 1.04RC6, so be patient for the final release Thats an error in the Firmware which occurs from time to time.

I've had my DNS-323 1.05 for about a week now running two 1TB drives in RAID 1. Temperature sensing seemed fine upon install and for a few days afterward.

I installed ffp and was using dns323-temp, and dns323-rtc to check both from the command line.

Now the dns323-temp is returning "0 C  32 F" and dns323-rtc is returning bogus values of "Mon Jan 1 01:41:41 2121".

The malfunction persists after reboot. Seems like it's keeping normal time OK and my fan seems to be running normally.

I recently made 3 changes which might have contributed:

1. setup NTP
2. setup TZ variable on boot
3. ran mediatomb (which I later killed because I don't need a uPNP server right now)

I have a suspicion that mediatomb might have been running and filling up the flash memory, now causing this problem. Is there anyway I can check my "available" flash memory?

knireis wrote:

i never used mediatomb and have the problem as well, so i guess it's not mediatomb

My fan reports the exact same speed, 2533 rpm. What does dns323-rtc report for you?

I was suspecting mediatomb because I thought it might have filled my flash with logs. Did you setup/run any other application recently which might have done something similar? Have you setup NTP or TZ?

I think I may have a workaround for this issue.

Instead of polling the DNS-323 sensor temperature, which really does not bother me that much I have changed the fanman.sh script to get the internal temperature of the disks that is rather more important.

  Ta=`/mnt/HD_a2/ipkg/opt/sbin/smartctl -d marvell -A /dev/sda | awk '/194 Temperature_Celsius/{print $10}' | sed 's/^[0]\+//'`
  Tb=`/mnt/HD_a2/ipkg/opt/sbin/smartctl -d marvell -A /dev/sdb | awk '/194 Temperature_Celsius/{print $10}' | sed 's/^[0]\+//'`
  if [ $Ta -gt $Tb ]; then                                                                                                     
  # Assign the higher temperature                                                                                             
    T=$Ta                                                                                                                     
  else                                                                                                                         
    T=$Tb                                                                                                                       
  fi

I am going to test this over a period of time to see if the problem with failing fan controls gets resolved.

You need to install ipkg and smartctl for this to work.