Raspbian Btrfs root filesystem guide
This document will guide you through the process of configuring a boot-time mountable #Btrfs #root #filesystem on #Raspbian Jessie. We'll step through configuration of a new install of Raspbian lite on a freshly written SD card and discuss at a higher level the steps needed to convert an existing install. Additionally we'll explore leveraging Btrfs snapshots to make inexpensive weak backups, send those backups remotely as differentials and demonstrate how to revert to a prior operating system state quickly and easily.
Most of this can be done over SSH once you've prepped and installed your SD card, but you'll need physical access to plug/unplug storage and diagnose any misconfigurations during boot. I've done my best to thoroughly cover any gotchas relating to boot configuration.