由于“卷存储元数据库：超时”，Docker无法启动

我遵循CentOS的Docker CE的安装说明 。 最初这工作。 在某个时候，系统重新启动，现在启动Docker失败。 欣赏这个问题的专家的眼睛…

systemctl start docker产生：

docker.service的作业失败，因为控制进程退出并显示错误代码。 有关详细信息，请参阅“systemctl status docker.service”和“journalctl -xe”。

systemctl status docker.service产生：

 Apr 21 11:25:23 sec-services-build-1 systemd[1]: Starting Docker Application Container Engine... Apr 21 11:25:23 sec-services-build-1 dockerd[9693]: time="2017-04-21T11:25:23.370390797+03:00" level=info msg="libcontainerd: previous instance of containerd still alive (8908)" Apr 21 11:25:23 sec-services-build-1 dockerd[9693]: time="2017-04-21T11:25:23.382492171+03:00" level=warning msg="overlay: the backing xfs filesystem is formatted without d_type support, which leads to incorrect behavior. Reformat the filesystem with ftype=1 to enable d_type support. Running without d_type support will no longer be supported in Docker 17.12." Apr 21 11:25:23 sec-services-build-1 dockerd[9693]: time="2017-04-21T11:25:23.382547668+03:00" level=info msg="[graphdriver] using prior storage driver: overlay" Apr 21 11:25:24 sec-services-build-1 dockerd[9693]: Error starting daemon: error while opening volume store metadata database: timeout Apr 21 11:25:24 sec-services-build-1 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE Apr 21 11:25:24 sec-services-build-1 systemd[1]: Failed to start Docker Application Container Engine. Apr 21 11:25:24 sec-services-build-1 systemd[1]: Unit docker.service entered failed state. Apr 21 11:25:24 sec-services-build-1 systemd[1]: docker.service failed.