在一台新機子上面，docker處理完lvs數據卷之后，啟動docker服務時，出現了啟動失敗，失敗信息如下：
[root@hxin221 ~]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/docker.service.d
└─flannel.conf
Active: failed (Result: exit-code) since Tue 2018-07-24 14:06:15 CST; 4s ago
Docs: https://docs.docker.com
Process: 28723 ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS $DOCKER_NETWORK_OPTIONS $DOCKER_STORAGE_OPTIONS (code=exited, status=1/FAILURE)
Main PID: 28723 (code=exited, status=1/FAILURE)
Memory: 412.0K
CGroup: /system.slice/docker.service
Jul 24 14:06:14 hxin221 systemd[1]: Starting Docker Application Container Engine...
Jul 24 14:06:14 hxin221 dockerd[28723]: time="2018-07-24T14:06:14.416711161+08:00" level=info msg="libcontainerd: new containerd process, pid: 28738"
Jul 24 14:06:15 hxin221 dockerd[28723]: Error starting daemon: error initializing graphdriver: devmapper: Base Device UUID and Filesystem verification failed: devicemapper: Error running deviceCreate (ActivateDevice) dm_task_run failed
Jul 24 14:06:15 hxin221 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Jul 24 14:06:15 hxin221 systemd[1]: Failed to start Docker Application Container Engine.
Jul 24 14:06:15 hxin221 systemd[1]: Unit docker.service entered failed state.
Jul 24 14:06:15 hxin221 systemd[1]: docker.service failed.
總的來說就是：
Error starting daemon: error initializing graphdriver: devmapper: Base Device UUID and Filesystem verification failed: devicemapper: Error running deviceCreate (ActivateDevice) dm_task_run failed
好吧，這個錯誤，之前沒有遇到過，踩了很多坑，最終，想了想，莫非這台機子早先時候已經裝了docker，然后舊數據導致的？
於是乎，就抱着試試看的目的，執行了如下操作：
[root@hxin221 ~]# rm -rf /var/lib/docker/*
沒錯，清除了docker的數據，由於是新機子，我也沒有做什么備份處理，其他小伙伴如果又遇到的話，記得先備份數據。
於是，重啟服務
[root@hxin221 ~]# systemctl restart docker
OK，問題不大，解決了。
以上