Systemd Works On More Btrfs Functionality

With the systemd developers pursuing their vision for how distributions/software should be distributed, more Btrfs specific functionality is being added to the init manager.

As systemd's grand plans involve the use of the Btrfs file-system for having per-user and per-app Btrfs sub-volumes and take advantage of other features (like snapshots) presented by this next-generation Linux file-system, systemd is starting to see more code specifically for handling Btrfs features.

Over night there were new systemd Git commits by Lennart Poettering with adding adding support for refursively removing Btrfs sub-volumes, support for recursively removing Btrfs snapshots, and machined dropping Btrfs sub-volumes when removing container images.

This comes down to basic but important work towards allowing more Btrfs-based functionality in systemd in the future. This current work will be part of the systemd 220 release coming up.