Error response from daemon: error creating overlay mount to /var/lib/docker/overlay2

环境：centos7.1

docker run -t -i centos /bin/bash

运行上面的命令开启容器时报错：

/usr/bin/docker-current: Error response from daemon: error creating overlay mount to /var/lib/docker/overlay2/8c4e909f7bd85dd94ac3483b209643dd02b4e45adfc0b8ee141a95214903a5c8/merged: invalid argument.
See '/usr/bin/docker-current run --help'.

这个是因为用的overlay2文件系统，而系统默认只能识别overlay文件系统

所以我们就要更新文件系统了

#systemctl stop docker      //停掉docker服务  

#rm -rf /var/lib/docker     //注意会清掉docker images的镜像  

#vi /etc/sysconfig/docker-storage       //将文件里的overlay2改成overlay即可

例：DOCKER_STORAGE_OPTIONS="--storage-driver overlay "

#vi /etc/sysconfig/docker         //去掉option后面的--selinux-enabled

然后启动docker即可：systemctl start docker

Error response from daemon: error creating overlay mount to /var/lib/docker/overlay2

再运行，成功！