两块磁盘
/dev/sdb1挂载在/data/下
systemctl stop docker
cp -rp /var/lib/docker /data/
rm /var/lib/docker
ln -s /data/docker/ /var/lib/docker
systemctl start docker
df -Th
记一次docker目录不够，扩容
原文：https://www.cnblogs.com/paul03/p/10238072.html
