默认docker的存储路径在：
/var/lib/docker
# docker info
Containers: 1
Images: 41
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Dirs: 43
Execution Driver: native-0.2
Kernel Version: 3.13.0-32-generic
WARNING: No swap limit support
可以这样：
service stop docker.io
mv /var/lib/docker to SAN
ln -s SAN /var/lib/docker
最后
# docker info
Containers: 5
Images: 572
Storage Driver: aufs
Root Dir: /data/docker/aufs
Dirs: 593
Execution Driver: native-0.2
Kernel Version: 3.16.0-30-generic
WARNING: No swap limit support
docker 修改镜像_修改docker的镜像容器存储路径步骤
http://m.bbyears.com/aspjiaocheng/78349.html
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