Resizing Docker containers with the Device Mapper plugin

1 · Jérôme Petazzoni · Jan. 29, 2014, midnight
If you’re using Docker on CentOS, RHEL, Fedora, or any other distro that doesn’t ship by default with AUFS support, you are probably using the Device Mapper storage plugin. By default, this plugin will store all your containers in a 100 GB sparse file, and each container will be limited to 10 GB. This article will explain how you can change that limit, and move container storage to a dedicated partition or LVM volume. Warning At some point, Docker storage driver internals have changed significan...