How to read files from store inside docker volume

[DrSamjames]

Hi

After a power cut my SD card that I was using to run ZWave JS on a Pi is no longer bootable. but I can still read the files off it. I've installed ZWave JS on a fresh card and my zwave controller still sees all my zwave devices but I've lost all the name and scene.

Is there a simple way to copy the store from my old SD card into my new installation?

I’m using docker compose, this is my config at the moment which is basicly the same as the old one:

version: "3.7"
services:
  zwave-js-ui:
    container_name: zwave-js-ui
    image: zwavejs/zwave-js-ui:latest
    restart: always
    tty: true
    stop_signal: SIGINT
    environment:
      #- SESSION_SECRET=mysupersecretkey
      - ZWAVEJS_EXTERNAL_CONFIG=/usr/src/app/store/.config-db
      # Uncomment if you want log times and dates to match your timezone instead of UTC
      # Available at https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
      - TZ=Europe/London
    networks:
      - zwave
    devices:
      # Do not use /dev/ttyUSBX serial devices, as those mappings can change over time.
      # Instead, use the /dev/serial/by-id/X serial device for your Z-Wave stick.
      - '/dev/ttyAMA0:/dev/ttyAMA0'
    volumes:
      - zwave-config:/usr/src/app/store
   # Or by using local folder
   # - ./store:/usr/src/app/store
    ports:
      - "8091:8091" # port for web interface
      - "3000:3000" # port for Z-Wave JS websocket server
networks:
  zwave:
volumes:
  zwave-config:
    name: zwave-config

[kpine]

Docker volumes are usually located under /var/lib/docker/volumes. You may find the store files in there.

[robertsLando]

In order to read files from the volume, start the docker file and run:

docker-compose up -d
mkdir -p store
docker cp $(docker ps -qf "name=zwave-js-ui"):/usr/src/app/store/. ./store

This will copy volumes files inside the folder from where you are running the command

[DrSamjames]

Hi

But that's my problem, I can't do that as I can't boot the card to run docker

[robertsLando]

Oh sorry, so use @kpine suggestion, you will be able to access volume data from there

[DrSamjames]

On the old non bootable card I've found a folder called "zwave-config/_data/" in the location suggested by @kpine including folders such as "settigns.json" but I am failing to find a similar folder in the new setup.

Can I use similar commands to the ones you sent to transfer the new setup and are these going to be all the files I need to restore everything to my new installation?

Thanks

Sam

[DrSamjames]

Got it all working by copying over the contents of /var/lib/docker/volumes/zwave-config/_data from the old memory card to ./store and changing the compose.yml to:

volumes:
     # - zwave-config:/usr/src/app/store
    # Or by using local folder
    - ./store:/usr/src/app/store

Seems to be all working as it was now.

Thanks for the help

Sam