ERROR: Your data directory is not writable...

[Softbox44]

Steps to reproduce

1. AIO Installation worked well
2. All containers green - master container up
3. when trying to access Nextcloud, the following error appears

Expected behavior

Open Nextcloud login

Actual behavior

NC Webpage with
Error
Your data directory is not writable.
Permissions can usually be fixed by giving the web server write access to the root directory. See https://docs.nextcloud.com/server/29/go.php?to=admin-dir_permissions.

Other information

Host OS

Debian

Output of sudo docker info

Client: Docker Engine - Community
 Version:    27.3.1
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.17.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.29.7
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 50
  Running: 26
  Paused: 0
  Stopped: 24
 Images: 36
 Server Version: 27.3.1
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 7f7fdf5fed64eb6a7caf99b3e12efcf9d60e311c
 runc version: v1.1.14-0-g2c9f560
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.1.0-0.deb11.21-amd64
 Operating System: Debian GNU/Linux 11 (bullseye)
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 7.725GiB
 Name: T110
 ID: 67a5c011-f421-42ca-9efe-3e9a6938e8b6
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled

Docker run command or docker-compose file that you used

  nextcloud-aio-mastercontainer:
    image: nextcloud/all-in-one:latest
    init: true
    restart: always
    container_name: nextcloud-aio-mastercontainer # This line is not allowed to be changed as otherwise AIO will not work correctly
    volumes:
      - nextcloud_aio_mastercontainer:/mnt/docker-aio-config # This line is not allowed to be changed as otherwise the built-in backup solution will not work
      - /var/run/docker.sock:/var/run/docker.sock:ro # May be changed on macOS, Windows or docker rootless. See the applicable documentation. If adjusting, don't forget to also set 'WATCHTOWER_DOCKER_SOCKET_PATH'!
    ports:
     ## - 80:80 # Can be removed when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else). See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
      - 8181:8080
     # - 8443:8443 # Can be removed when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else). See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
    environment: # Is needed when using any of the options below
      - SKIP_DOMAIN_VALIDATION=true
     # - AIO_DISABLE_BACKUP_SECTION=false # Setting this to true allows to hide the backup section in the AIO interface. See https://github.com/nextcloud/all-in-one#how-to-disable-the-backup-section
      - APACHE_PORT=11000 # Is needed when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else). See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
      - APACHE_IP_BINDING=0.0.0.0 # Should be set when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else) that is running on the same host. See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
      - BORG_RETENTION_POLICY=--keep-within=7d --keep-weekly=3 --keep-monthly=3 # Allows to adjust borgs retention policy. See https://github.com/nextcloud/all-in-one#how-to-adjust-borgs-retention-policy
      # - COLLABORA_SECCOMP_DISABLED=false # Setting this to true allows to disable Collabora's Seccomp feature. See https://github.com/nextcloud/all-in-one#how-to-disable-collaboras-seccomp-feature
      - NEXTCLOUD_DATADIR=/srv/BTRFS27/Dockerapps/NC_aio # Allows to set the host directory for Nextcloud's datadir. ⚠️⚠️⚠️ Warning: do not set or adjust this value after the initial Nextcloud installation is done! See https://github.com/nextcloud/all-in-one#how-to-change-the-default-location-of-nextclouds-datadir
      - NEXTCLOUD_MOUNT=/srv/BTRFS27/dataX # Allows the Nextcloud container to access the chosen directory on the host. See https://github.com/nextcloud/all-in-one#how-to-allow-the-nextcloud-container-to-access-directories-on-the-host
      - NEXTCLOUD_UPLOAD_LIMIT=5G # Can be adjusted if you need more. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-upload-limit-for-nextcloud
      - NEXTCLOUD_MAX_TIME=3600 # Can be adjusted if you need more. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-max-execution-time-for-nextcloud
      - NEXTCLOUD_MEMORY_LIMIT=1800M # Can be adjusted if you need more. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-php-memory-limit-for-nextcloud
      # - NEXTCLOUD_TRUSTED_CACERTS_DIR=/path/to/my/cacerts # CA certificates in this directory will be trusted by the OS of the nexcloud container (Useful e.g. for LDAPS) See See https://github.com/nextcloud/all-in-one#how-to-trust-user-defined-certification-authorities-ca
      - NEXTCLOUD_STARTUP_APPS=deck twofactor_totp tasks calendar contacts notes talk # Allows to modify the Nextcloud apps that are installed on starting AIO the first time. See https://github.com/nextcloud/all-in-one#how-to-change-the-nextcloud-apps-that-are-installed-on-the-first-startup
      # - NEXTCLOUD_ADDITIONAL_APKS=imagemagick # This allows to add additional packages to the Nextcloud container permanently. Default is imagemagick but can be overwritten by modifying this value. See https://github.com/nextcloud/all-in-one#how-to-add-os-packages-permanently-to-the-nextcloud-container
      # - NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS=imagick # This allows to add additional php extensions to the Nextcloud container permanently. Default is imagick but can be overwritten by modifying this value. See https://github.com/nextcloud/all-in-one#how-to-add-php-extensions-permanently-to-the-nextcloud-container
      # - TALK_PORT=3478 # This allows to adjust the port that the talk container is using. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-talk-port
      
  # # Optional: Caddy reverse proxy. See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
  # # You can find further examples here: https://github.com/nextcloud/all-in-one/discussions/588
  # caddy:
  #   image: caddy:alpine
  #   restart: always
  #   container_name: caddy
  #   volumes:
  #     - ./Caddyfile:/etc/caddy/Caddyfile
  #     - ./certs:/certs
  #     - ./config:/config
  #     - ./data:/data
  #     - ./sites:/srv
  #   network_mode: "host"

volumes: # If you want to store the data on a different drive, see https://github.com/nextcloud/all-in-one#how-to-store-the-filesinstallation-on-a-separate-drive
  nextcloud_aio_mastercontainer:
    name: nextcloud_aio_mastercontainer # This line is not allowed to be changed as otherwise the built-in backup solution will not work

Other valuable info

[szaimen]

Hi, can you post the output of sudo ls -al /srv/BTRFS27/Dockerapps/NC_aio and sudo mount | grep /srv/BTRFS27 here?