docker1.4 version Devicemapper modify container hard disk size

After upgrading the latest Docker version (1.4.0), found that the container's hard disk space is only 10G, if you need to specify the initial hard disk size, the current practice is still rough, change the Docker daemon Start command, and then delete the existing mirror of the current machine, restart the Docker service, the command is as follows:

sudo service docker stop sudo rm -rf/var/lib/Docker   
(Note that this will remove all images from the current machine, be cautious)sudo
(Recommended modification/etc/default/DF -hfilesystem                      Size  used Availuse% mountedon/dev /mapper/docker-4... 346aa1   20G  416M   19G   3/

Reference:

Http://stackoverflow.com/questions/24391660/limit-disk-size-and-bandwidth-of-a-docker-container

https://github.com/docker/docker/issues/9080

Https://github.com/snitm/docker/blob/master/daemon/graphdriver/devmapper/README.md

docker1.4 version Devicemapper modify container hard disk size