Andy Kononov

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  1. found solution First create directory and file for custom configuration: sudo mkdir -p /etc/systemd/system/docker.service.d sudo $EDITOR /etc/systemd/system/docker.service.d/docker-storage.conf For docker version before 17.06-ce paste: [Service] ExecStart= ExecStart=/usr/bin/docker daemon -H fd:// --graph="/mnt" For docker after 17.06-ce paste: [Service] ExecStart= ExecStart=/usr/bin/dockerd -H fd:// --data-root="/mnt" Alternative method through daemon.json I recently tried above procedure with 17.09-ce on Fedora 25 and it seem to not work. Instead of that simple modification in /etc/docker/daemon.json do the trick: { "graph": "/mnt", "storage-driver": "overlay" } Despite the method you have to reload configuration and restart Docker: sudo systemctl daemon-reload sudo systemctl restart docker To confirm that Docker was reconfigured: docker info|grep "loop file" In recent version (17.03) different command is required: docker info|grep "Docker Root Dir" Output should look like this: Data loop file: /mnt/devicemapper/devicemapper/data Metadata loop file: /mnt/devicemapper/devicemapper/metadata Or: Docker Root Dir: /mnt Then you can safely remove old Docker storage: rm -rf /var/lib/docker
  2. when build armbian via docker "proces will create and run a named Docker container armbian with 2 named volumes armbian-cache and armbian-ccache" and store it in /var. My root amount is not over 40Gb and it will be good thing to store armbian-cache and armbian-ccache in different place