I need help in order to start docker deamon using btrfs.
The deamon don't want to start when I try to start it using -s btrfs. There is an error in the logs (wrong filesystem?) when trying to start docker deamon with btrfs.
I use ubuntu as OS :
root@ionutmos-VirtualBox:/etc/default# uname -a Linux ionutmos-VirtualBox 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux I mounted a new partition using btrfs on /var/lib/docker2.
/dev/sda btrfs 52428800 512 50302720 1% /var/lib/docker2 I have 1.6.2 docker version installed :
/etc/default# docker version Client version: 1.6.2 Client API version: 1.18 Go version (client): go1.4.2 Git commit (client): 7c8fca2 OS/Arch (client): linux/amd64 Server version: 1.6.2 Server API version: 1.18 Go version (server): go1.4.2 Git commit (server): 7c8fca2 OS/Arch (server): linux/amd64 I edited "/lib/systemd/system/docker.service" file and it's looking like this :
Description=Docker Application Container Engine Documentation=http://docs.docker.com After=network.target docker.socket Requires=docker.socket [Service] EnvironmentFile=-/etc/default/docker ExecStart=/usr/bin/docker -d -H fd:// $OPTIONS MountFlags=slave LimitNOFILE=1048576 LimitNPROC=1048576 LimitCORE=infinity [Install] WantedBy=multi-user.target Also=docker.socket I inserted 2 Options in /etc/default/docker file:
OPTIONS="--storage-driver btrfs" DOCKER_OPTS="-s btrfs" When I try to start docker deamon manually this error is present into logs:
FATA[0000] Shutting down daemon due to errors: error intializing graphdriver: prerequisites for driver not satisfied (wrong filesystem?) Here it is the entire log file :
root@ionutmos-VirtualBox:/usr/lib/system-service# docker -d -D -s btrfs DEBU[0000] waiting for daemon to initialize INFO[0000] +job serveapi(unix:///var/run/docker.sock) INFO[0000] Listening for HTTP on unix (/var/run/docker.sock) DEBU[0000] Registering GET, /images/{name:.*}/get DEBU[0000] Registering GET, /images/{name:.*}/history DEBU[0000] Registering GET, /images/{name:.*}/json DEBU[0000] Registering GET, /_ping DEBU[0000] Registering GET, /events DEBU[0000] Registering GET, /images/json DEBU[0000] Registering GET, /images/get DEBU[0000] Registering GET, /containers/{name:.*}/changes DEBU[0000] Registering GET, /containers/{name:.*}/logs DEBU[0000] Registering GET, /exec/{id:.*}/json DEBU[0000] Registering GET, /containers/{name:.*}/attach/ws DEBU[0000] Registering GET, /images/search DEBU[0000] Registering GET, /containers/json DEBU[0000] Registering GET, /containers/{name:.*}/export DEBU[0000] Registering GET, /containers/{name:.*}/json DEBU[0000] Registering GET, /containers/{name:.*}/top DEBU[0000] Registering GET, /containers/{name:.*}/stats DEBU[0000] Registering GET, /info DEBU[0000] Registering GET, /version DEBU[0000] Registering GET, /images/viz DEBU[0000] Registering GET, /containers/ps DEBU[0000] Registering POST, /auth DEBU[0000] Registering POST, /exec/{name:.*}/start DEBU[0000] Registering POST, /exec/{name:.*}/resize DEBU[0000] Registering POST, /images/create DEBU[0000] Registering POST, /images/load DEBU[0000] Registering POST, /images/{name:.*}/push DEBU[0000] Registering POST, /containers/{name:.*}/start DEBU[0000] Registering POST, /containers/{name:.*}/rename DEBU[0000] Registering POST, /containers/{name:.*}/exec DEBU[0000] Registering POST, /build DEBU[0000] Registering POST, /containers/{name:.*}/unpause DEBU[0000] Registering POST, /containers/{name:.*}/restart DEBU[0000] Registering POST, /containers/{name:.*}/wait DEBU[0000] Registering POST, /containers/{name:.*}/attach DEBU[0000] Registering POST, /containers/{name:.*}/copy DEBU[0000] Registering POST, /containers/{name:.*}/resize DEBU[0000] Registering POST, /commit DEBU[0000] Registering POST, /images/{name:.*}/tag DEBU[0000] Registering POST, /containers/create DEBU[0000] Registering POST, /containers/{name:.*}/kill DEBU[0000] Registering POST, /containers/{name:.*}/pause DEBU[0000] Registering POST, /containers/{name:.*}/stop DEBU[0000] Registering DELETE, /containers/{name:.*} DEBU[0000] Registering DELETE, /images/{name:.*} DEBU[0000] Registering OPTIONS, DEBU[0000] docker group found. gid: 125 FATA[0000] Shutting down daemon due to errors: error intializing graphdriver: prerequisites for driver not satisfied (wrong filesystem?) 
