Rif.: RN214 OS6.10.3 Webgui hanging during scheduled operations

profeta64 · ‎2020-11-24

I have currently since several hours my RN214, with 2x WD Red 3TB discs which is doing something, I suppose an antivir scan, and both web interface, samba share and Plex not accesible...

I do not have special sofware installed.. Plex and iDrive.

Latest OS 6.10.3.

Is there any way how to conncect to it in such case?

p.s. unfortunately the SSH service is off.. so no terminal access...

profeta64 · ‎2020-11-24

I was able to get back in the WebUi...for a short time... 😐

Seems it had a restart thus I was able again to log in.

I extracted the relevant logs.

Nov 24, 2020 11:08:40 PM		System: ReadyNASOS background service started.
Nov 24, 2020 11:08:16 PM		System: ReadyNASOS service or process (sysadm) was restarted.
Nov 24, 2020 05:40:30 PM		System: Antivirus scanner definition file was updated to 59.25998.

Nov 23, 2020 06:46:55 PM		System: ReadyNASOS background service started.
Nov 23, 2020 06:46:39 PM		System: ReadyNASOS service or process (snapshot_monito) was restarted.
Nov 23, 2020 05:39:57 PM		System: Antivirus scanner definition file was updated to 59.25997.

Nov 21, 2020 06:18:58 PM		System: ReadyNASOS background service started.
Nov 21, 2020 06:18:42 PM		System: ReadyNASOS service or process (continuous_snap) was restarted.
Nov 21, 2020 05:52:52 PM		System: ReadyNASOS background service started.
Nov 21, 2020 05:52:41 PM		System: ReadyNASOS service or process (enclosure_monit) was restarted.
Nov 21, 2020 05:37:42 PM		System: Antivirus scanner definition file was updated to 59.25995.

StephenB · ‎2020-11-25

Is there any explanation for the restarts?

Does the volume resync after the restarts?

profeta64 · ‎2020-11-25

The issue comes from clamav.

After SEVERAL tentatives, I was able to get access to the WebUI, enable the SSH termina.

Then after other several tentatives, and timeouts I was in the prompt...

I used then

ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head

to get the process list, and the clamav process was eating most of the ressources (~92%).

Plex instead was around 1%.

Now I disabled the antivirus functionality, and I did not observed any hanging since 24h.

In the log file there is no information about volume resync...

Where I can get it?

StephenB · ‎2020-11-25

@profeta64 wrote:

In the log file there is no information about volume resync...

Where I can get it?

Look for "resilver" in the === maintenance history === section at the end of volume.log

@profeta64 wrote:

I used then
ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head
to get the process list, and the clamav process was eating most of the ressources (~92%).

I suggest checking the fullness of the root partition. It's only 4 GB, and the system will misbehave in several different ways if it is getting full. Normally it's around 25% used.

profeta64 · ‎2020-11-25

The last resilver happend in February 2020...

The root partitin seems not to be a issue...

/dev/md0 3862208 1511520 2124796 42% /

It is perhaps a little higher than you are expecting..

profeta64 · ‎2020-11-25

Checking the several files of the log, I found the DMESG log:

[Tue Nov 24 22:11:35 2020] Out of memory: Kill process 17676 (clamd) score 1373 or sacrifice child
[Tue Nov 24 22:11:35 2020] Killed process 17676 (clamd) total-vm:1059984kB, anon-rss:788972kB, file-rss:0kB

Seems that out of memory error is occuring quite often..

StephenB · ‎2020-11-25

@profeta64 wrote:

Checking the several files of the log, I found the DMESG log:

[Tue Nov 24 22:11:35 2020] Out of memory: Kill process 17676 (clamd) score 1373 or sacrifice child
[Tue Nov 24 22:11:35 2020] Killed process 17676 (clamd) total-vm:1059984kB, anon-rss:788972kB, file-rss:0kB

Seems that out of memory error is occuring quite often..

Interesting. I haven't seen that on my RN202. Plex can use a lot of memory, but Plex is also installed on the RN202.