suddenly started getting fan speed errors

[mrQQ]

hi,

I run 6.2.4 on RNDU4000, and suddenly started getting errors in log and email:

Thu Jun 11 2015 9:24:08	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (709 rpm).
Thu Jun 11 2015 9:22:11	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (711 rpm).
Thu Jun 11 2015 9:19:54	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (711 rpm).
Thu Jun 11 2015 9:16:02	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (711 rpm).
Thu Jun 11 2015 9:14:36	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (710 rpm).
Thu Jun 11 2015 9:08:54	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (711 rpm).
Thu Jun 11 2015 9:07:23	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (709 rpm).
Thu Jun 11 2015 9:06:16	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (709 rpm).
Thu Jun 11 2015 9:04:15	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (708 rpm).
Thu Jun 11 2015 9:03:33	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (711 rpm).
Thu Jun 11 2015 9:02:27	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (707 rpm).
Thu Jun 11 2015 9:00:56	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (709 rpm).
Thu Jun 11 2015 8:58:54	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (709 rpm).
Thu Jun 11 2015 8:58:18	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (709 rpm).

how to fix this?

[Nhellie]

Could be related to this thread:

https://www.readynas.com/forum/viewtopi ... 5&start=45

[mrQQ]

it might be, but that thread is closed and I have no idea how to fix it? the temperatures are ok, so why does it complain about the speed? or, on the other hand, why does it let the speed drop too much?

[mrQQ]

is there any way to fix it?

[CharlesR]

mrQQ wrote:
is there any way to fix it?

# echo 1000 > /etc/frontview/min_fan_speed_override
# systemctl stop readynasd
# systemctl disable readynasd
# systemctl enable readynasd
# systemctl start readynasd

I believe (provided to me via support - not tested) this will set the minimum speed to 1000 (change as desired). Delete the file and you'll undo what you did.

I use numerous Pros 2s and they yo-yo under load. Fan goes from low 700s to around 1,300. The temperature gets to roughly 85C before it ramps up. Quickly the temperature jumps down and it takes a while to get back to the 700s.

[mrQQ]

where do i put this file?

[Nhellie]

That needs to be done through SSH/TelNet.

[mrQQ]

I understand that, however that's a script file which needs to be executed during each boot my guess, so it matters where I put it?

[StephenB]

You are correct in thinking that the folder matters. The confusion here is that this is not a script, these commands are typed once into ssh.

This part is the key:

# echo 1000 > /etc/frontview/min_fan_speed_override

It creates a min_fan_speed_override file holding 1000 in /etc/frontview

# systemctl stop readynasd
# systemctl disable readynasd
# systemctl enable readynasd
# systemctl start readynasd

This restarts the NAS application (and I think it would likely be ok to simply reboot the NAS instead).

[mrQQ]

ok, so it sticks even after a reboot?

[StephenB]

Yes. If you want to change it, you need to replace (or delete) the min_fan_speed_override file in /etc/frontview.

[mrQQ]

FYI, the file did not exist, I've echo'ed into it, but I'm still getting the errors...

[StephenB]

You did the restart part of the procedure?

[mrQQ]

Yes. Did not try restarting whole NAS though.

[mrQQ]

Any other options? 😞

[mdgm-ntgr]

It could take some minutes for the change to take effect. So you still keep on getting these alerts regularly?

[mrQQ]

Yep, still getting them every night as the temperature drops and the fan slows down.

Perhaps the location is different in my system? As I've mentioned the file did not exist?

[StephenB]

The file doesn't normally exist. It's an override (e.g., if the system sees it, it is supposed to use it instead of the hard-wired minimum).

[mrQQ]

ok, so perhaps a reboot is in order?

or, perhaps, I need to set specific permissions for the file?

is the name exactly correct?

[mrQQ]

fwiw, reboot did not help.

[mrQQ]

I think I figured this one myself.

I had fancontrol installed from early versions where 6 OS did not support legacy fan control. And it worked really well for me since I had NAS running in my living room and needed it to be quiet. Now I removed fancontrol package and speed jumped to 1700 which is fine since it's hidden away somewhere.

[StephenB]

That would explain it.

[ATCIS]

---

@mrQQ wrote:
I think I figured this one myself.

I hadfancontrol installed from early versions where 6 OS did not support legacy fan control. And it worked really well for me since I hadNAS running in my living room and needed it to be quiet. Now I removedfancontrol package and speed jumped to 1700 which is fine since it's hidden away somewhere.

---

I think I may be experiencing the same (or similar) issue that you had here, only mine was delayed until I upgrade to OS6 version 6.4.  If you have time, would you mind checking out my post found here https://community.netgear.com/t5/Using-your-ReadyNAS/Fan-CPU-in-enclosure-Internal-speed-is-below-th... and tell me what you think?  If you concur, would you mind elaborating on the proper method of removing the fancontrol package as you did?

Thanks in advance!

[petermac]

Same issue here, upgraded Pro 6 to FW 6.4 and now the system fan is not spinning unless the system temps gets over 70C. I have tried creating the file and restarting the system and it doesn't do anything that I can tell