Create more free space in thin pool or use dm.min

问题：在docker pull的时候遇到如下问题

failed to register layer: devmapper: Thin Pool has 107394 free data blocks which is less than minimum required 163840 free data blocks. Create more free space in thin pool or use dm.min_free_space option to change behavior 解决方法：

http://stackoverflow.com/questions/36918387/space-issue-on-docker-devmapper-and-centos7

Cleanup exited processes:

docker rm $(docker ps -q -f status=exited) Cleanup dangling volumes:

docker volume rm $(docker volume ls -qf dangling=true) Cleanup dangling images:

docker rmi $(docker images --filter "dangling=true" -q --no-trunc) 如果还是不行： 删除工作目录 rm -rf /var/lib/docker/*

// reload配置文件 systemctl daemon-reload // 重启docker

systemctl restart docker.service