After installing docker on centos7,Failed to start docker."Job for docker.service failed." - docker

Question

After executing yum install docker on centos7, I want to start docker by executing service docker start, then i can see the error:
Redirecting to /bin/systemctl start docker.service
Job for docker.service failed. See 'systemctl status docker.service' and 'journalctl -xn' for details.
then I execute systemctl status docker.service -l, then the error is:
docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled)
Active: failed (Result: exit-code) since Sun 2015-03-15 03:49:49 EDT; 12min ago
Docs: http://docs.docker.com
Process: 11444 ExecStart=/usr/bin/docker -d $OPTIONS $DOCKER_STORAGE_OPTIONS (code=exited, status=1/FAILURE)
Main PID: 11444 (code=exited, status=1/FAILURE)
Mar 15 03:49:48 localhost.localdomain docker[11444]: 2015/03/15 03:49:48 docker daemon: 1.3.2 39fa2fa/1.3.2; execdriver: native; graphdriver:
Mar 15 03:49:48 localhost.localdomain docker[11444]: [a25f748b] +job serveapi(fd://)
Mar 15 03:49:48 localhost.localdomain docker[11444]: [info] Listening for HTTP on fd ()
Mar 15 03:49:48 localhost.localdomain docker[11444]: [a25f748b] +job init_networkdriver()
Mar 15 03:49:48 localhost.localdomain docker[11444]: [a25f748b] -job init_networkdriver() = OK (0)
Mar 15 03:49:49 localhost.localdomain docker[11444]: 2015/03/15 03:49:49 write /var/lib/docker/init/dockerinit-1.3.2: no space left on device
Mar 15 03:49:49 localhost.localdomain systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Mar 15 03:49:49 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.
Mar 15 03:49:49 localhost.localdomain systemd[1]: Unit docker.service entered failed state.
I really have no idea, looking forward to your response, I will be very appreciative!

Answer 1

this error usually occurs because of missing device-mapper-event-libs package.
# yum install device-mapper-event-libs

Answer 2

Thanks for Ben Whaley's advice,When I check my disk space,Indeed it's not enough.I extend my disk space and solve the problem. It's the first time I put forward questions,It's really of help. thanks again.

Answer 3

I upgraded the CentOS 7 kernel from 3 to 4.
NOTE: I upgraded Kernel for other reasons also, first try without upgrading kernel.
delete the folder docker under /var/lib
go to cd /etc/sysconfig
vi docker (before editing copy docker docker.org)
see Line there you find OPTIONS='--selinux-disabled --log-driver=journald'
Remove --selinux-disabled should like OPTIONS='--log-driver=journald'
Now un-comment # setsebool -P docker_transition_unconfined 1 to setsebool -P docker_transition_unconfined 1
reboot the machine or you try only docker start to check for me it works :)