I have installed docker on centos 6.6 after starting docker as a service and pulling centos image
[root@ 17:43 ~]$docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos 6 f6808a3e4d9e 13 days ago 215.7 MB
centos latest 88f9454e60dd 13 days ago 223.9 MB code here
and then I tried to start a container
docker run centos:6 echo "ff"
FATA[0000] Error response from daemon: Cannot start container 7a65630de2390c17d254b8c229c87f42ba81aa5b90f48b553e758ed7b0610f57: write /cgroup/cpu/docker/7a65630de2390c17d254b8c229c87f42ba81aa5b90f48b553e758ed7b0610f57/cgroup.procs: invalid argument
any idea why I am getting this error