A/B partitioning - let's talk about the dirty RW files

media.ccc.de/v/all-systems-go...
A/B partitioning is great - you hermetically drop-in the whole new OS and boot
into it. Although, how can we manage and migrate the RW configuration and state
files that lie within? Can we do that reliably on both OS upgrades and
downgrades?
This talk will explore the design used on the SteamDeck, the issues
we've seen while drawing analogies, and future inspiration with "Fitting
Everything Together" by Lennart Poettering in mind.
Emil Velikov
cfp.all-systems-go.io/all-sys...
#asg2023