Fan Enclosure Errors 6.1.9 RC11

[spiderman1]

I noticed that since I 6.1.9 RC11 that I get the following fan errors on my PRO 6

System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (551 rpm).

After a minute or so, the fans then stabilise. Should I be concerned?

Strange how I do not get this error on my Pro Business model that is also running the 6.1.9 RC11.

Any ideas.

[mdgm-ntgr]

It should hopefully adjust the fan settings so it doesn't go that low again. It may take multiple attempts to get it right.

[spiderman1]

Is this a bug or normal OS behavior?

[mdgm-ntgr]

Do you have the stock CPU in the NAS?

The fan shouldn't run slower than the minimum normally.

[spiderman1]

I have a q6600 installed.

The warnings only happen when booting.

[mdgm-ntgr]

So quickly after booting the fan speed goes back up to normal?

If you look in your initrd.log what firmware were you running before RC11?

Do you have a different CPU in your Pro BE?

[spiderman1]

Here is the contents of my log:

root@READYNASPRO6:~# cat /var/log/frontview/initrd.log 
[2014/03/14 06:35:49] Factory default initiated by Frontview!
[2014/03/14 06:36:05] Defaulting to X-RAID2 mode, RAID level 5
[2014/03/14 06:36:16] Factory default initiated on ReadyNASOS 6.1.6.
[2014/03/14 14:54:10] Updated from ReadyNASOS 6.1.6 (1391111179) to 6.1.7 (1394646198).
[2014/03/20 13:49:50] Updated from ReadyNASOS 6.1.7 (1394646198) to 6.1.7 (1395273421).
[2014/04/12 14:47:06] Updated from ReadyNASOS 6.1.7 (1395273421) to 6.1.7 (1396977042).
[2014/04/16 10:58:35] Updated from ReadyNASOS 6.1.7 (1396977042) to 6.1.8 (1397523007).
[2014/06/23 06:00:33] Updated from ReadyNASOS 6.1.8 (1397523007) to 6.1.9 (1403301897).
[2014/07/19 12:20:15] Updated from ReadyNASOS 6.1.9 (1403301897) to 6.1.9 (1405706270).
[2014/08/27 08:21:09] Updated from ReadyNASOS 6.1.9 (1405706270) to 6.1.9 (1408568742).

No, this behaviour is not present on my Pro BE.

Looking more closely, right after a snapshot upon startup. Here is the log:

Wed Sep 17 2014 8:22:30	
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (505 rpm).
Wed Sep 17 2014 8:19:20	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410714006' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:19	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410717607' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:19	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410721208' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:18	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410724810' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:18	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410728411' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:17	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410735620' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:17	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410739221' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:17	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410742822' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:16	
Miscellaneous: Smart Snapshot successfully delete snapshot 'c_1410746424' from share or LUN 'rsyslog'.
Wed Sep 17 2014 8:19:16	
System: ReadyNASOS background service started.

[mdgm-ntgr]

O.K. so you updated from RC5 to RC8 to RC11.

So you didn't see it on RC8?

After RC8 not much changed re fan control. I think just a change to make the fan speed up faster.

Do you use snapshots on both NAS units?

[spiderman1]

Yes, snapshots are enabled on both units. Is this a problem with my Pro 6 architecture?

Another thing, is OS 6 still dependant on fancontrol and lmsensors as I still have them installed?

[mdgm-ntgr]

fancontrol and lmsensors aren't needed.

If I do e.g.

# dpkg -l | grep "lm-sensors\|fancontrol"

I don't see any installed packages.

For OS6 we use readynasd to control the fan speed.

[spiderman1]

Both these packages on installed on both my Pro and Pro 6. I did so when there were issues with fan speeds and given that I have q6600 cpus in both boxes.

What should I do?

[mdgm-ntgr]

I don't have a Pro 6 or a Q6600 so I can't confirm this issue.

Our fan control may not be designed to account for a 3rd party CPU.

Odd that you would get the issue on one NAS, but not the other.

Another thing to check would be to see if there is a build up of dust and that the fan is spinning properly. Could the issue be with the fan itself?

[spiderman1]

Good idea. I will check to see if the fan is working correctly.

I have configured a fan control script that was working fine both on the Pro and Pro 6. It is only with RC11 that the Pro 6 has been acting up only on startup.

[mdgm-ntgr]

Well most of the changes to how readynasd controls the fan speed since you last did a factory default and up to RC11 were there by RC8, so I'd be a bit surprised if RC11 changed things.

Perhaps you could also send me your logs from each unit?: http://kb.netgear.com/app/answers/detail/a_id/21543

I might notice something in there (if it is very obvious).

[spiderman1]

Will do. Many thanks as usual

[spiderman1]

I am not able to download the logs for my Pro BE. I get this error:

Gateway Time-out

The gateway did not receive a timely response from the upstream server or application.

Is there another way that I could get the logs to you. Should I ssh into the box?

Another thing, I opened up the Pro 6 as suggested and blasted some air on around the heat Sink and around the fan blades. I noticed that the fan did not have any noticeable dust nor motherboard. I have now restarted the nas a few times and no longer get the error. I wonder?

[mdgm-ntgr]

Sent you a PM.

In readynasd.log I see

Sep 17 10:46:09 READYNASPRO6 readynasd[3210]: Can't read last fan setting or setting error -22.
Sep 17 10:49:33 READYNASPRO6 readynasd[3221]: Can't read last fan setting or setting error -22.
Sep 17 11:13:54 READYNASPRO6 readynasd[3228]: Can't read last fan setting or setting error -22.
Sep 17 11:20:06 READYNASPRO6 readynasd[3218]: Can't read last fan setting or setting error -22.
Sep 17 12:14:53 READYNASPRO6 readynasd[3223]: Can't read last fan setting or setting error -22.

Perhaps this is related (note readynasd.log is kept quite short so that it doesn't grow too large).

Maybe it's fixed itself now.

[dsm1212]

I'm on 6.1.9 just installed friday night (up from 4.2.25) and I have seen 2 fan threshold warnings. PRO 6 with updated CPU, but it's the enclosure fan it's complaining about. Both times I checked within a couple of minutes and the fan was ~900rpms. The box wasn't overheated at all. Where is readynasd.log? Doesn't seem to be in /var/log.

I think it's either a false alarm due to fan polling sometimes failing or the fan monitoring is better in os6 and I have a weak fan. Would like to understand which it is :-).

steve

[mdgm-ntgr]

readynasd.log is in the logs zip file. It is generated from

# journalctl -a | grep readynasd

Do you still have the issue on 6.2.0?

[CharlesR]

I'm seeing the following with a Ultra 6 Plus using 6.2...

Nov 24 12:29:06 Ultra6Plus readynasd[1895]: Fan speed [803] is below min fan speed [900]. Setting min pwm to 22.

One time I viewed the Admin page right after it booted and it stated the fan was under 900. Quickly it sped up to ~1200 and stayed there. Anytime I check it's at ~1200.

[mdgm-ntgr]

If the fan speed is too slow, the PWM is increased and a new PWM floor set so the fan doesn't go too slow again.

[dsm1212]

Upgraded to 6.2 and got a few new fan messages:

Mon Nov 24 2014 19:05:51
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (502 rpm).
Mon Nov 24 2014 19:04:02
System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (0 rpm).

The readynasd.log shows:

Nov 24 19:04:02 warehouse6 readynasd[2772]: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (0 rpm).
Nov 24 19:05:44 warehouse6 readynasd[2772]: fread(/var/readynasd/system_logs.zip) caused errno=2
Nov 24 19:05:51 warehouse6 readynasd[2772]: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (502 rpm).
Nov 24 19:06:04 warehouse6 readynasd[2772]: Fan speed [502] is below min fan speed [900]. Setting min pwm to 23.

Now the fan shows 1468 RPM's. Is the "internal" fan the CPU fan or the case fan? The system didn't get much louder.

Prior to the upgrade and "most" of the time my fan would read about 950 RPMs.

steve

[dsm1212]

My fans settled out at a new level of ~1200 RPMS and it's been over 12 hours now without and error. Seems like the software adapted to my hardware which is cool (pun intended).

steve

[dsm1212]

After upgrading to 6.2.4 my fans have been back to the 950's again. I do get errors like this from time to time:

Fri May 15 2015 13:05:29 System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (312 rpm).
Fri May 15 2015 13:04:27 System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (0 rpm).
Sat Mar 14 2015 20:42:31 System: Fan 'Fan' in enclosure 'Internal' speed is below threshold. (0 rpm).

I guess I still wonder if I have a fan problem and I should replace it. It think I'm still in my 5 year warranty, but I upgraded my Pro 6 cpu (to a safe one with the same power characteristics). Fans are cheap though. Should I consider replacing it? If so, any model number recommended?

steve