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dishmagic66's avatar
dishmagic66
Guide
Apr 26, 2014

How to control fanspeed on a RN104

On special request, here is a workaround for controling the fanspeed of the RN104 ( most likely the same on a 102).
For this you will have to SSH in to the NAS.

Thanks to Moseleypj for doing the work.

First you create a file in /root with the name fanoveride. Put the following lines in to the file.
    #!/bin/bash

    ## Variables ##
    FANPWMPATH=/sys/devices/platform/mv64xxx_i2c.0/i2c-0/0-003e/pwm1
    FANSPEEDPATH=/sys/devices/platform/mv64xxx_i2c.0/i2c-0/0-003e/fan1_input
    CORETEMPPATH=/sys/devices/platform/axp-temp.0/temp1_input
    MAXFAN=100   # Maximum operable speed
    MINFAN=0     # Minimum operable speed
    MINPWM=75    # PWM Limit
    MAXPWM=255   # PWM Limit
    MINTEMP=35   # Min temp -> Fan slowest
    MAXTEMP=75   # Max temp -> Fan fastest
    NEWSPEED=50  # Initial fan speed (%)

    ## Functions ##
    function getReadings {
        FANPWM=$(cat $FANPWMPATH)
        FANSPEED=$(cat $FANSPEEDPATH)
        CORETEMP=$(cat $CORETEMPPATH)
    }

    function setFanSpeed {
        if [ $NEWSPEED -lt $MINFAN ]; then
            NEWSPEED=$MINFAN
        fi
        if [ $NEWSPEED -gt $MAXFAN ]; then
            NEWSPEED=$MAXFAN
        fi
        NEWPWM=$(expr $MAXPWM - $MINPWM)
        NEWPWM=$(expr $NEWPWM \* $NEWSPEED)
        NEWPWM=$(expr $NEWPWM / 100)
        NEWPWM=$(expr $NEWPWM + $MINPWM)

        echo $NEWPWM > /sys/devices/platform/mv64xxx_i2c.0/i2c-0/0-003e/pwm1
       }

    function calcFanPercent {
        TEMPRAN=$(expr $MAXTEMP - $MINTEMP)
        TEMPREL=$(expr $CORETEMP - $MINTEMP)
        TEMPREL=$(expr $TEMPREL \* 100)
        TEMPPER=$(expr $TEMPREL / $TEMPRAN)
        NEWSPEED=$TEMPPER
    }

    ###################################################################
    echo "Automatically controlling fan speed..."
    while true
    do
        getReadings
        echo "Temp: $CORETEMP C    FAN: $NEWSPEED% [$FANSPEED RPM] [$FANPWM]"

        calcFanPercent
        setFanSpeed

        sleep 10
    done
    ###################################################################


Now chmod 755 /root/fanoveride

===================

Now create a file in /etc/init.d with the name fanoveride.
Put the following lines in to this script

#!/bin/sh
### BEGIN INIT INFO
# Provides: FanOveride
# Required-Start: $local_fs $network $named $time $syslog
# Required-Stop: $local_fs $network $named $time $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Description: FanOveride overides the default ReadyNAS fan control
### END INIT INFO

SCRIPT=~/fanoveride
RUNAS=root

PIDFILE=/var/run/fanoveride.pid
LOGFILE=/var/log/fanoveride.log

start() {
if [ -f /var/run/$PIDNAME ] && kill -0 $(cat /var/run/$PIDNAME); then
echo 'Service already running' >&2
return 1
fi
echo 'Starting service.' >&2
local CMD="$SCRIPT &> \"$LOGFILE\" & echo \$!"
su -c "$CMD" $RUNAS > "$PIDFILE"
echo 'Service started' >&2
}

stop() {
if [ ! -f "$PIDFILE" ] || ! kill -0 $(cat "$PIDFILE"); then
echo 'Service not running' >&2
return 1
fi
echo 'Stopping service.' >&2
kill -15 $(cat "$PIDFILE") && rm -f "$PIDFILE"
echo 'Service stopped' >&2
}

uninstall() {
echo -n "Are you really sure you want to uninstall this service? That cannot be undone. [yes|No] "
local SURE
read SURE
if [ "$SURE" = "yes" ]; then
stop
rm -f "$PIDFILE"
echo "Notice: log file is not be removed: '$LOGFILE'" >&2
update-rc.d -f <NAME> remove
rm -fv "$0"
fi
}

case "$1" in
start)
start
;;
stop)
stop
;;
uninstall)
uninstall
;;
retart)
stop
start
;;
*)
echo "Usage: $0 {start|stop|restart|uninstall}"
esac


Now make sure it is executable and starts on boot:
chmod +755 /etc/init.d/fanoveride
update-rc.d fanoveride defaults


To control it manually:
service fanoveride start
service fanoveride stop


In my case i have the min and max temp in the script set to 35 and 75 degrees to create a nice fan response wich is not to nervous.
If you set it between 40 and 65 the regulating becomes more agressive.
Just play with the values for your needs.
Tips from other users

90 Replies

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  • saketb's avatar
    saketb
    Aspirant
    May 31, 2014
    As per the details given here I created the files at their respective places. The update was successful and the FAN speed increased from 800 to 990, temperature reduced marginally by just 2 deg C.

    But when I manually use the commands to stop and start the service by using the following command...
    root@ReadyNAS_RN104:~# service /etc/init.d/fanoveride stop

    I get an error...
    /etc/init.d/fanoveride: unrecognized service

    The files were created with Notepad++ as suggested by Stephen.

    Request for help on this matter.
  • saketb's avatar
    saketb
    Aspirant
    May 31, 2014
    Finally got the error rectified. It was due to an extra character in the file.
    I have changed the MAXTEMP=65 instead 75, so that the FAN spins a bit faster.

    Now, the issue is when I issue the command...
    service fanoveride start

    I get the message...
    root@ReadyNAS_RN104:/etc/init.d# service fanoveride start
    Starting service.
    Service started

    Everything looks fine, but the FAN speed is yet 990, the temps remain same and not decreasing.

    Surprising thing is that when I issue a command...
    service fanoveride stop

    I get the message...
    root@ReadyNAS_RN104:/etc/init.d# service fanoveride stop
    /etc/init.d/fanoveride: 29: kill: No such process
    Service not running

    This says that the Service is not running...

    Request some guidance here.

    Current temps...
    CPU: 67 degC
    HDD: 48-51 degC
    FAN RPM: 990
  • townsmcp's avatar
    townsmcp
    Aspirant
    Jun 02, 2014
    Woohoo - thanks guys - its now working for me :D
    I tried Note++ and still got the same error message (saved the file as a *.* type) so went into Vi on a terminal (using the GateOne app) and as you guys said, the carriage return was being a problem - each line had ^M at the end so I deleted those and tried the steps again and all now working great - the fan spun up to 2500RPM within seconds using a max temp of 75. The service can be loaded and unloaded with no problems

    Seriously thinking about changing max temp to 65 though (anyone have any thoughts on dropping the max temp that low?) - my NAS is tucked away in a room where the noise is of no bother to anyone - it now seems to be idling at the following rate:

    Fan - 1241RPM
    CPU - 53
    Disk 1 - 37
    Disk 2 - 39
    Disk 3 - 40
    Disk 4 - 37
    (these are 2Tb WD Red drives)
    Saketb - if you want I can email you over the 2 files that are working for me? That might help you

    thanks all
    Townsmcp
  • saketb's avatar
    saketb
    Aspirant
    Jun 02, 2014
    townsmcp wrote:
    Woohoo - thanks guys - its now working for me :D
    I tried Note++ and still got the same error message (saved the file as a *.* type) so went into Vi on a terminal (using the GateOne app) and as you guys said, the carriage return was being a problem - each line had ^M at the end so I deleted those and tried the steps again and all now working great - the fan spun up to 2500RPM within seconds using a max temp of 75. The service can be loaded and unloaded with no problems

    Seriously thinking about changing max temp to 65 though (anyone have any thoughts on dropping the max temp that low?) - my NAS is tucked away in a room where the noise is of no bother to anyone - it now seems to be idling at the following rate:

    Fan - 1241RPM
    CPU - 53
    Disk 1 - 37
    Disk 2 - 39
    Disk 3 - 40
    Disk 4 - 37
    (these are 2Tb WD Red drives)
    Saketb - if you want I can email you over the 2 files that are working for me? That might help you

    thanks all
    Townsmcp


    Its great to hear that its working for you and that the temps have come down considerably.
    Mine, seems to not work and temps have risen to 70+ on the CPU. The service does not work.

    Request you to email me the files so that I can copy them to the respective folders and start the service. (sent you a PM with my email)

    One thing, I would like to ask... the files I created was with notepad++ and then deleted the ^M and saved them again in Vi.
    When listed with ls -l it shows...

    -rwxr-xr-x+ 1 guest guest 1799 May 31 19:20 fanoveride (root folder)
    -rwxr-xr-x+ 1 guest guest 1317 May 31 20:02 fanoveride (/etc/init.d folder)

    Are these correct? Is the guest guest correct? Is this why it is not running?

    Request you to help me here, as I'm really worried about the temps and the device.

    Thanks.
  • townsmcp's avatar
    townsmcp
    Aspirant
    Jun 02, 2014
    saketb wrote:
    townsmcp wrote:
    Woohoo - thanks guys - its now working for me :D
    I tried Note++ and still got the same error message (saved the file as a *.* type) so went into Vi on a terminal (using the GateOne app) and as you guys said, the carriage return was being a problem - each line had ^M at the end so I deleted those and tried the steps again and all now working great - the fan spun up to 2500RPM within seconds using a max temp of 75. The service can be loaded and unloaded with no problems

    Seriously thinking about changing max temp to 65 though (anyone have any thoughts on dropping the max temp that low?) - my NAS is tucked away in a room where the noise is of no bother to anyone - it now seems to be idling at the following rate:

    Fan - 1241RPM
    CPU - 53
    Disk 1 - 37
    Disk 2 - 39
    Disk 3 - 40
    Disk 4 - 37
    (these are 2Tb WD Red drives)
    Saketb - if you want I can email you over the 2 files that are working for me? That might help you

    thanks all
    Townsmcp


    Its great to hear that its working for you and that the temps have come down considerably.
    Mine, seems to not work and temps have risen to 70+ on the CPU. The service does not work.

    Request you to email me the files so that I can copy them to the respective folders and start the service. (sent you a PM with my email)

    One thing, I would like to ask... the files I created was with notepad++ and then deleted the ^M and saved them again in Vi.
    When listed with ls -l it shows...

    -rwxr-xr-x+ 1 guest guest 1799 May 31 19:20 fanoveride (root folder)
    -rwxr-xr-x+ 1 guest guest 1317 May 31 20:02 fanoveride (/etc/init.d folder)

    Are these correct? Is the guest guest correct? Is this why it is not running?

    Request you to help me here, as I'm really worried about the temps and the device.

    Thanks.


    Will send the files in a few minutes.

    That guest guest thing is probably the issue. My files are there by root root. I would suggest the following:

    1. Install Bitvise SSH Client (from http://www.bitvise.com/download-area).
    2. Load SSH Client and log into the NAS with the Root account (using root as the username and your NAS password as the password)
    3. Drag and drop the files I send you to correct directories.
    4. Right click the files and change permissions to 755
    5. Run the update-rc.d fanoveride defaults command
    6. Start the service
    7. Check the admin page to see if the page has changed speed
    8. Try stopping the service to make sure it unloads ok (remember to restart it too though ;) )

    Let us know if that works for you.

    Townsmcp
  • saketb's avatar
    saketb
    Aspirant
    Jun 02, 2014
    townsmcp wrote:
    saketb wrote:
    townsmcp wrote:
    Woohoo - thanks guys - its now working for me :D
    I tried Note++ and still got the same error message (saved the file as a *.* type) so went into Vi on a terminal (using the GateOne app) and as you guys said, the carriage return was being a problem - each line had ^M at the end so I deleted those and tried the steps again and all now working great - the fan spun up to 2500RPM within seconds using a max temp of 75. The service can be loaded and unloaded with no problems

    Seriously thinking about changing max temp to 65 though (anyone have any thoughts on dropping the max temp that low?) - my NAS is tucked away in a room where the noise is of no bother to anyone - it now seems to be idling at the following rate:

    Fan - 1241RPM
    CPU - 53
    Disk 1 - 37
    Disk 2 - 39
    Disk 3 - 40
    Disk 4 - 37
    (these are 2Tb WD Red drives)
    Saketb - if you want I can email you over the 2 files that are working for me? That might help you

    thanks all
    Townsmcp


    Its great to hear that its working for you and that the temps have come down considerably.
    Mine, seems to not work and temps have risen to 70+ on the CPU. The service does not work.

    Request you to email me the files so that I can copy them to the respective folders and start the service. (sent you a PM with my email)

    One thing, I would like to ask... the files I created was with notepad++ and then deleted the ^M and saved them again in Vi.
    When listed with ls -l it shows...

    -rwxr-xr-x+ 1 guest guest 1799 May 31 19:20 fanoveride (root folder)
    -rwxr-xr-x+ 1 guest guest 1317 May 31 20:02 fanoveride (/etc/init.d folder)

    Are these correct? Is the guest guest correct? Is this why it is not running?

    Request you to help me here, as I'm really worried about the temps and the device.

    Thanks.


    Will send the files in a few minutes.

    That guest guest thing is probably the issue. My files are there by root root. I would suggest the following:

    1. Install Bitvise SSH Client (from http://www.bitvise.com/download-area).
    2. Load SSH Client and log into the NAS with the Root account (using root as the username and your NAS password as the password)
    3. Drag and drop the files I send you to correct directories.
    4. Right click the files and change permissions to 755
    5. Run the update-rc.d fanoveride defaults command
    6. Start the service
    7. Check the admin page to see if the page has changed speed
    8. Try stopping the service to make sure it unloads ok (remember to restart it too though ;) )

    Let us know if that works for you.

    Townsmcp


    Thanks a million. Finally, got it working.

    Used Putty for ssh access and transferred the files. Changed the MAXTEMP to 65 and now the temps have come down drastically.
    FAN RPM 1706
    CPU 53-56C
    HDD1 42C
    HDD2 43C
    HDD3 41C

    Though, the files yet show guest, guest. Thats surprising....

    Thanks again for the help.
  • townsmcp's avatar
    townsmcp
    Aspirant
    Jun 02, 2014
    saketb wrote:
    townsmcp wrote:
    saketb wrote:
    townsmcp wrote:
    Woohoo - thanks guys - its now working for me :D
    I tried Note++ and still got the same error message (saved the file as a *.* type) so went into Vi on a terminal (using the GateOne app) and as you guys said, the carriage return was being a problem - each line had ^M at the end so I deleted those and tried the steps again and all now working great - the fan spun up to 2500RPM within seconds using a max temp of 75. The service can be loaded and unloaded with no problems

    Seriously thinking about changing max temp to 65 though (anyone have any thoughts on dropping the max temp that low?) - my NAS is tucked away in a room where the noise is of no bother to anyone - it now seems to be idling at the following rate:

    Fan - 1241RPM
    CPU - 53
    Disk 1 - 37
    Disk 2 - 39
    Disk 3 - 40
    Disk 4 - 37
    (these are 2Tb WD Red drives)
    Saketb - if you want I can email you over the 2 files that are working for me? That might help you

    thanks all
    Townsmcp


    Its great to hear that its working for you and that the temps have come down considerably.
    Mine, seems to not work and temps have risen to 70+ on the CPU. The service does not work.

    Request you to email me the files so that I can copy them to the respective folders and start the service. (sent you a PM with my email)

    One thing, I would like to ask... the files I created was with notepad++ and then deleted the ^M and saved them again in Vi.
    When listed with ls -l it shows...

    -rwxr-xr-x+ 1 guest guest 1799 May 31 19:20 fanoveride (root folder)
    -rwxr-xr-x+ 1 guest guest 1317 May 31 20:02 fanoveride (/etc/init.d folder)

    Are these correct? Is the guest guest correct? Is this why it is not running?

    Request you to help me here, as I'm really worried about the temps and the device.

    Thanks.


    Will send the files in a few minutes.

    That guest guest thing is probably the issue. My files are there by root root. I would suggest the following:

    1. Install Bitvise SSH Client (from http://www.bitvise.com/download-area).
    2. Load SSH Client and log into the NAS with the Root account (using root as the username and your NAS password as the password)
    3. Drag and drop the files I send you to correct directories.
    4. Right click the files and change permissions to 755
    5. Run the update-rc.d fanoveride defaults command
    6. Start the service
    7. Check the admin page to see if the page has changed speed
    8. Try stopping the service to make sure it unloads ok (remember to restart it too though ;) )

    Let us know if that works for you.

    Townsmcp


    Thanks a million. Finally, got it working.

    Used Putty for ssh access and transferred the files. Changed the MAXTEMP to 65 and now the temps have come down drastically.
    FAN RPM 1706
    CPU 53-56C
    HDD1 42C
    HDD2 43C
    HDD3 41C

    Though, the files yet show guest, guest. Thats surprising....

    Thanks again for the help.


    Your welcome
    Wow - thats great that it worked. I thought the guest guest permissions would have done it but oh well I changed the MAXTEMP to 70 in the end and now im seeing the following:
    CPU: 50
    Fan: 1365 RPM
    Disk 1: 35
    Disk 2: 36
    Disk 3: 37
    Disk 4: 34

    Townsmcp
  • gareth_iowc's avatar
    gareth_iowc
    Aspirant
    Jun 02, 2014
    saketb wrote:
    townsmcp wrote:
    Woohoo - thanks guys - its now working for me :D
    I tried Note++ and still got the same error message (saved the file as a *.* type) so went into Vi on a terminal (using the GateOne app) and as you guys said, the carriage return was being a problem - each line had ^M at the end so I deleted those and tried the steps again and all now working great - the fan spun up to 2500RPM within seconds using a max temp of 75. The service can be loaded and unloaded with no problems

    Seriously thinking about changing max temp to 65 though (anyone have any thoughts on dropping the max temp that low?) - my NAS is tucked away in a room where the noise is of no bother to anyone - it now seems to be idling at the following rate:

    Fan - 1241RPM
    CPU - 53
    Disk 1 - 37
    Disk 2 - 39
    Disk 3 - 40
    Disk 4 - 37
    (these are 2Tb WD Red drives)
    Saketb - if you want I can email you over the 2 files that are working for me? That might help you

    thanks all
    Townsmcp


    Its great to hear that its working for you and that the temps have come down considerably.
    Mine, seems to not work and temps have risen to 70+ on the CPU. The service does not work.

    Request you to email me the files so that I can copy them to the respective folders and start the service. (sent you a PM with my email)

    One thing, I would like to ask... the files I created was with notepad++ and then deleted the ^M and saved them again in Vi.
    When listed with ls -l it shows...

    -rwxr-xr-x+ 1 guest guest 1799 May 31 19:20 fanoveride (root folder)
    -rwxr-xr-x+ 1 guest guest 1317 May 31 20:02 fanoveride (/etc/init.d folder)

    Are these correct? Is the guest guest correct? Is this why it is not running?

    Request you to help me here, as I'm really worried about the temps and the device.

    Thanks.


    apt-get install nano

    create the files on the nas in terminal. thats how i did it and it worked fine.

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