QNAP TS 453A - Plex will launch but after few mins will stop finding content

Plex Media Server NAS & Devices
1

Server Version 1.23.4

Case :

  • Start NAS
  • Open/Start Plex on local network
  • Plex will start + Able to login + Display list of content
  • After few seconds/mins connection is lost (when trying to play media but even without trying to play)
  • Unable to reach the server (even if I can still navigate through the server app)
  • After the “delay” can’t access settings anymore as well, can’t log back in if I tried to log out

Actions :

  • Tried to stop and start again plex media server app on qnap, several times
  • Remove any VPN / check direct connexion to the nas
  • Check last QNAP upgrade
  • Tried to connect to https://[LOCAL_IP]/:32400/web - After few seconds “not available” (QNAP error message)
  • Tried to log out / Log back in

Settings (that I know) :

  • Remote control is activated
  • Allow not secure connections
2

Have you enabled the QTS Firewall ?

3

Hello. Thanks for the really fast answer.

No I haven’t enabled QTS firewall.

Basically, no changes of configuration were made between a working Plex Media Server (yesterday) and this issue.

Since I’ve tried to update the QNAP software, it didn’t affect the issue.

4

Okay, then we need a zip with PMS Logs

5

Sorry I don’t have enough time to dl the log. Just being able to screenshot them. I will try again later (need to stop and relaunch app everytime)

Screenshot 2022-02-14 at 11.38.48
Screenshot 2022-02-14 at 11.38.48907×552 136 KB

6

Plex Media Server Logs_2022-02-14_11-45-46.zip (1.6 MB)

7

Database is corrupted ?

8

From your logs:

Feb 14, 2022 08:52:42.487 [0x7fb36128ab38] WARN - Waited one whole second for a busy database.
Feb 14, 2022 08:52:43.003 [0x7fb361379b38] WARN - Waited one whole second for a busy database.
Feb 14, 2022 08:52:43.500 [0x7fb36128ab38] ERROR - Failed to begin transaction (../Plugins/PluginDatabaseState.cpp:110) (tries=9): Cannot begin transaction. database is locked
Feb 14, 2022 08:52:45.241 [0x7fb361379b38] WARN - Waited one whole second for a busy database.
Feb 14, 2022 08:52:45.271 [0x7fb36128ab38] WARN - Waited one whole second for a busy database.
Feb 14, 2022 08:52:46.286 [0x7fb36128ab38] ERROR - Failed to begin transaction (../Plugins/PluginDatabaseState.cpp:110) (tries=10): Cannot begin transaction. database is locked

So either a very busy QNAP, AntiVira scanning the database, a database that needs to be optimized, or sadly broken :frowning:

I fear the last, even though logs doesn’t show that specifically, so suggest you start with a health check of it
Ref: Repair a Corrupted Database | Plex Support

9

Thanks. Will try to repair the database following the instructions on the link.

Just to be able to NOT reproduce that issue again…

I have installed Plex pretty recently on the QNAP (which I bought to use Plex) so I don’t think the DB becoming too large or corrupted over time could be the cause clearly.

The one thing I do with my NAS that I think could corrupt the data eventually is that I have a task to put the NAS on sleep mode every night. Could this be the cause?

10

No, but doing so will prevent scheduled optimize task, as well as other tasks

11

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