HTTP code 400 unexpected: Duplicate mount point

[hanfreakingsolo]

I triggered an update for my plex container through home assistant. The image pulls fine and I see the container get renamed, but after a minute I see this error:

25.10.2023 14:26:54 [info]      Image pulled successfully
Container died: plex (4f0979a2e61aa4c572d2f54112fcf5f441724291fac4897c99c3d98f4f475773)
25.10.2023 14:27:29 [error]     MqDockerUp stopped due to an error
25.10.2023 14:27:29 [error]     object
25.10.2023 14:27:29 [error]     Error: (HTTP code 400) unexpected - Duplicate mount point: /PlexMedia 
    at /app/node_modules/docker-modem/lib/modem.js:343:17
    at getCause (/app/node_modules/docker-modem/lib/modem.js:373:7)
    at Modem.buildPayload (/app/node_modules/docker-modem/lib/modem.js:342:5)
    at IncomingMessage.<anonymous> (/app/node_modules/docker-modem/lib/modem.js:310:16)
    at IncomingMessage.emit (node:events:526:35)
    at IncomingMessage.emit (node:domain:489:12)
    at endReadableNT (node:internal/streams/readable:1359:12)
    at processTicksAndRejections (node:internal/process/task_queues:82:21)

[MichelFR]

It Seems like you mounted PlexMedia twice.
Creating a Volume for /PlexMedia would probably fix that issue.

Closing for now

[hanfreakingsolo]

Error: (HTTP code 400) unexpected - Duplicate mount point

I have created a volume, docker compose up works without issue. Here is my compose file:

  plex:
    image: lscr.io/linuxserver/plex:latest
    container_name: plex
    network_mode: host
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              count: 1
              capabilities: [gpu]
        limits:
          cpus: "0.75"
    environment:
      - PUID=568
      - PGID=568
      - TZ=America/Toronto
      - VERSION=docker
      - PLEX_CLAIM="redacted"
      - NVIDIA_VISIBLE_DEVICES=all
      - NVIDIA_DRIVER_CAPABILITIES=compute,video,utility      
    volumes:
      - ./plex/config:/config
      - ./plex/transcode:/transcode
      - PlexMedia:/PlexMedia
    restart: unless-stopped

volumes:
  downloads:
    driver_opts:
      type: "nfs"
      o: "addr=192.168.0.11,nfsvers=4"
      device: ":/mnt/truenasZ2/downloads/qbittorent"
  PlexMedia:
    driver_opts:
      type: "nfs"
      o: "addr=192.168.0.11,nfsvers=4"
      device: ":/mnt/truenasZ2/PlexMedia"

[MichelFR]

Thanks for sharing your solution!

[hanfreakingsolo]

Thanks for sharing your solution!

Sorry Michel maybe a misunderstanding. The above is my original compose file, this is what isn't working. I still get the duplicate mount point even with this configuration.
Thanks in advance

[MichelFR]

could you please try
./PlexMedia:/PlexMedia

instead

PlexMedia:/PlexMedia

[hanfreakingsolo]

could you please try ./PlexMedia:/PlexMedia

instead

PlexMedia:/PlexMedia

Tried this, but unfortunately it is not a solution as this uses PlexMedia as a local bind mount rather than an NFS share volume. I've had too many headaches mounting my media to the host itself, so mounting in docker via a volume is the only solution. I don't quite understand how watchtower was able to update with this configuration but mqdockerup does not? I much prefer your app to watchtower!
Thanks

[MichelFR]

Hmm could you please provide me the output of:
docker inspect plex

I might not be handling volumes correctly.

In the next release I’m gonna add some more debug messages so we could analyze this.
I’m also gonna try to fix it.

[hanfreakingsolo]

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                "PGID=568",
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                "PLEX_MEDIA_SERVER_USER=abc",
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]

[pvh0]

Had the same issue here with the following docker command to startup the initial container:

docker run -it -p 8091:8091 -p 3000:3000 --name zwavejsui --device=/dev/ttyUSB-zwave:/dev/zwave --mount type=bind,source=/volume1/homes/username/docker/zwave2jsui/_data,target=/usr/src/app/store zwavejs/zwave-js-ui:latest

Modified the code so it looks like this (--mount changed to -v) and updating works flawlessly:

docker run -p 8091:8091 -p 3000:3000 --name zwavejsui --device=/dev/ttyUSB-zwave:/dev/zwave -v /volume1/homes/username/docker/zwave2jsui/_data:/usr/src/app/store zwavejs/zwave-js-ui:latest

Hope it helps with debugging