Chasing down a frequent crash of PMS on Linux/Docker

Plex Media Server Desktops & Laptops
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Plex for Mac: Version 1.78.2.3975-c5bd0cbb
PMS on Docker/Linux: Version 1.32.6.7521

I’m having an issue where Plex seems to get stuck scanning new additions to the library. Quite often (maybe approaching once a day) I’ll be unable to play any media. I have to restart my Plex container and then it continues on its merry way. I’ve tried a few things, like:

  • Upgrading from Ubuntu 22
  • Switching from CIFS/SMB to NFS access to my NAS
  • Disabling Plex’s backups (saw someone in another thread recommend it)
  • Upgrading through several versions of the Linux kernel
  • Upgrading through many recent versions of PMS
  • Opening up the scheduled tasks windows to ~23 hours per day, to allow everything to catch up (which it has now, after weeks of running)

This is a new(ish) build, been up for just a few months now and it’s had this issue since the very beginning.

Here’s my current setup:

Dell Optiplex 7069 Micro
i7-8700T / 64 GB RAM / 2 TB SSD / Intel NIC
Ubuntu server 23.04
Docker version 24.0.6, build ed223bc
docker-compose version 1.29.2
Hardware transcoding enabled
Plex config stored locally on SSD
Media files stored on Synology accessed via NFS mounts (same behavior on CIFS/SMB before switching to NFS)

And here’s a timeline of the most recent incident this morning, for which I have logs:

All times CDT @ Sep 26, 2023:

9:30a - noticed "Happiness (1998)" spinning in Mac Plex app -- this is usually the signal something is wrong.
9:30 - attempted playback (resume Gravity Falls S02E15) - FAILED, no immediate error (indefinite spinning)
~9:31 - restarted Plex container in Docker ("docker restart plex")
9:33 - attempted playback (resume Gravity Falls S02E15)  - success
9:34 - Happiness still spinning, CMD-R in Mac Plex App to refresh, now it stopped spinning
9:35 - Attempt play of Happiness - success
9:37 - Gathered logs via Settings / Troubleshooting / Download Logs

Docker compose file:

version: "3.6"
volumes:
  PLEXDATA:
    name: PLEXDATA
    driver_opts:
      type: nfs
      o: addr=10.0.1.159,nolock,soft,rw
      device: :/volume1/PLEXDATA
  SHARE1:
    name: SHARE1
    driver_opts:
      type: nfs
      o: addr=10.0.1.159,nolock,soft,rw
      device: :/volume1/SHARE1
  DX513DATA:
    name: DX513DATA
    driver_opts:
      type: nfs
      o: addr=10.0.1.159,nolock,soft,rw
      device: :/volume2/DX513DATA
services:
  plex:
    restart: always
    container_name: plex
    environment:
      - CHANGE_CONFIG_DIR_OWNERSHIP=true
      - HOME=/config
      - PLEX_CLAIM=----redacted----
      - TZ=America/Chicago
      - PLEX_GID=1000
      - PLEX_UID=1000
    hostname: plexinc-pms-docker-plexpass
    network_mode: host
    image: plexinc/pms-docker:plexpass
    volumes:
      - PLEXDATA:/PLEXDATA
      - PLEXDATA:/PLEXDATA1
      - PLEXDATA:/PLEXDATA2
      - PLEXDATA:/PLEXDATA3
      - PLEXDATA:/PLEXDATA4
      - PLEXDATA:/PLEXDATA5
      - DX513DATA:/DX513DATA
      - SHARE1:/SHARE1
      - /media/transcode:/transcode
      - /media/plex-local-config:/config
    devices:
      - /dev/dri:/dev/dri
    mem_limit: 8192M
    privileged: true

Plex logs: sent via PM

2

This was resolved by disabling the notifications from Radarr / Sonarr. ( Settings / Connect / Plex )

3

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