FreeNAS – Tyler Woods

FreeNAS Corral: Control Fan Speed for your Lenovo SA120 JBOD Enclosure

March 17, 2017 Tyler Woods

Earlier this year, I wrote an article on how to control the fan speed of your Lenovo SA120 JBOD from within FreeNAS. It turns out this doesn’t work on the newest FreeNAS 10 ( FreeNAS Corral ), but the reason is simple. When I went to run the Fan Speed control script, I got an error returned:

login as: root
root@192.168.3.25's password:
Last login: Fri Mar 17 11:23:53 2017 from 192.168.3.243

Welcome to: FreeNAS-Corral-RELEASE
To make configuration changes, type 'cli' and use the CLI command set.
Any configuration changes used outside of the FreeNAS CLI are not saved to the configuration database.


Welcome to FreeNAS
[root@labnas] ~# python fancontrol.py 1
File "fancontrol.py", line 36
print("Enclosure found on " + device);
^
TabError: inconsistent use of tabs and spaces in indentation

root@192.168.3.25's password:

Last login: Fri Mar 17 11:23:53 2017 from 192.168.3.243

Welcome to: FreeNAS-Corral-RELEASE

To make configuration changes, type 'cli' and use the CLI command set.

Any configuration changes used outside of the FreeNAS CLI are not saved to the configuration database.

Welcome to FreeNAS

[root@labnas] ~# python fancontrol.py 1

File "fancontrol.py", line 36

print("Enclosure found on " + device);

TabError: inconsistent use of tabs and spaces in indentation

I pondered this a bit, but the first thing I thought of was to execute python2 and see if I got a shell…

[root@labnas] ~# python2
Python 2.7.13 (default, Mar 14 2017, 19:29:46)
[GCC 4.2.1 Compatible FreeBSD Clang 3.9.1 (tags/RELEASE_391/final 289601)] on freebsd11
Type "help", "copyright", "credits" or "license" for more information.
>>> exit
Use exit() or Ctrl-D (i.e. EOF) to exit
>>>

[root@labnas] ~# python2

Python 2.7.13 (default, Mar 14 2017, 19:29:46)

[GCC 4.2.1 Compatible FreeBSD Clang 3.9.1 (tags/RELEASE_391/final 289601)] on freebsd11

Type "help", "copyright", "credits" or "license" for more information.

>>> exit

Use exit() or Ctrl-D (i.e. EOF) to exit

>>>

OK! So, I thought that…

Detach volume and mark all disks as new in FreeNAS (erase everything)

February 13, 2017February 16, 2017 Tyler Woods

This might seem like a no-brainer… I guess the UI is just a bit misleading, I don’t know. I wanted to erase my freenas disks, but I guess “detach volume” didn’t sound convincing enough? Anyways, this is new for me because usually I’m worried about losing my data and avoid wiping out volumes like the plague. Today, I’m wiping out a FreeNAS 9.10 server to re-purpose. I wanted to rebuild the array for better performance. It’s very simple to (willfully) destroy a volume in FreeNAS: Log In to FreeNAS Navigate…

How To: Control Lenovo SA120 fan speeds from within FreeNAS

December 8, 2016January 4, 2017 Tyler Woods

AndrewX192 has created a Python script to allow adjusting the fan speed of a Lenovo SA120. Step 1: Download the python script to your FreeNAS Log in to FreeNAS and open a shell Hit “paste” and copy below: curl https://raw.githubusercontent.com/AndrewX192/lenovo-sa120-fanspeed-utility/master/fancontrol.py > ./fancontrol.py To verify that this downloaded, run the command and look for the file. ls -alF Good! It is there. Step 2: Testing! On the next line, go ahead and execute the following command: python fancontrol.py 1 This will bring any attached Lenovo SA120 DAS down to the lowest…