[root@lh- ~]# docker images

Cannot connect to the Docker daemon. Is the docker daemon running on this host?

[root@lh- ~]# systemctl start docker.service

Job for docker.service failed because a timeout was exceeded. See "systemctl status docker.service" and "journalctl -xe" for details.

[root@lh- ~]# systemctl status docker.service

● docker.service - Docker Application Container Engine

   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)

   Active: deactivating (final-sigkill) (Result: timeout) since Thu -- :: UTC;  days ago

     Docs: http://docs.docker.com

  Process:  ExecStart=/usr/bin/docker-current daemon --exec-opt native.cgroupdriver=systemd $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=/FAILURE)

 Main PID:  (code=exited, status=/FAILURE)

   CGroup: /system.slice/docker.service

Sep  :: lh- systemd[]: Starting Docker Application Container Engine...

Sep  :: lh- docker-current[]: time="2016-09-07T15:57:57.761131231Z" level=error msg="[graphdriver] prior storage driver \"devicemapper\" failed: ...directory"

Sep  :: lh- docker-current[]: time="2016-09-07T15:57:57.761257149Z" level=fatal msg="Error starting daemon: error initializing graphdriver: open ...directory"

Sep  :: lh- systemd[]: docker.service: main process exited, code=exited, status=/FAILURE

Sep  :: lh- systemd[]: docker.service stop-sigterm timed out. Killing.

Sep  :: lh- systemd[]: docker.service still around after SIGKILL. Ignoring.

Sep  :: lh- systemd[]: docker.service stop-final-sigterm timed out. Killing.

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