[nephyrin]

SteamOS dev here - lack of case folding is one (but solvable, we supported development on native case folding for ext4), but general stability issues are the main concern. Our testing with btrfs has not been promising for deploying it in a zero-maintenance manner to many users and finnicky SD cards and have it Just Work, but we're keeping an eye on things and weighing where we could contribute.

[bsimpson]

Have you done any performance testing with btrfs compression?

I have a Legion Go. I don't have the specs handy now, but the SSD was rated fast enough that I suspected compression would harm my overall performance.

[jonny_eh]

Is there a way for adventurous users to opt into using BTRFS on SD cards?

[KyleGospo]

https://gitlab.com/popsulfr/steamos-btrfs