Job for docker.service failed because the control process exited with error code. See "systemctl sta

docker的engine 基于Device Mapper提供的一种存储驱动,而它又依赖与 devicemapper。于是乎我将它给删除并重启服务，解决了docker无法正常启动的问题。

1 删除

# rm -rf /var/lib/docker/

2 # 添加如下内容 #

vim /etc/docker/daemon.json

{ "graph": "/mnt/docker-data", "storage-driver": "overlay" }

3 重新启动 

systemctl start docker