bcachefs

правда Линус грозится удалить

В Debian удалили bcachefs-tools, потому что их переписали на Rust:

And so, my adventure with bcachefs-tools comes to an end. I’d advise that if you consider using bcachefs for any kind of production use in the near future, you first consider how supportable it is long-term, and whether there’s really anyone at all that is succeeding in providing stable support for it.

Но и правильно сделает. Бтрфс достаточно.