Plex Docker Preferences.xml Blank


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I'm going to apologize in advanced for this being an obscure request for help.  I'm really not sure where to start.  

 

A couple of weeks ago my plex server was unresponsive.  After logging into unraid's management interface and pulling up the docker logs I got an error message that said something along the lines of "preferences.xml" could not be read.  When I opened my appdata folder to check that file it was completely blank.  I did have a backup from appdata backup/restore and managed to replace the blank file.  Plex started back up just fine and I went on my merry way, for about a day until this happened again a couple of more times.  During these instances I also noticed that my unraid machine was not reachable at times, almost like there was a network problem.  A reboot usually corrects this issue.  

 

I've tried a few things.  At first, I thought somehow my pihole instance (running separately on an ubuntu server) was screwed up and I was having DNS issues.  So, I did a fresh install of pihole. Things seemed to be working great until last night when my plex server was unresponsive again.  I also could not log into my unraid machine.  One thing I tried differently last night was I bypassed one of my network switches thinking possibly it could be going bad (I run a unifi network and my server was going through a USW-48 switch).  We will see if that somehow corrects the issue.  

 

I guess my main question here is, does anyone have any idea what could be causing my "preferences.xml" to wipe itself like this?  It seems somehow connected to network issues either with my server or with my netowrk hardware or software.  I suppose these all could be symptoms of failing hardware, but I'm unsure of what steps I can take to diagnose that.

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Follow up post.  It's happened again.  My server has become unresponsive.  I had to reboot it to get it back, but it came back up.  I've attached my diagnostics.  I noticed on the startup screen I get the following error:

 

modprobe: ERROR: could not insert 'nct6775': No such device

 

So, this does appear to be either a system or hardware error, not a plex thing.  Any ideas?

someflix-unraid-diagnostics-20220628-2143.zip

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