I'd love to have configurable tiered storage with delayed migration. To let the spinning rust drives stay off in deep sleep for days, unless the frontend caches don't have the data.

Sorry. Not a question, just a feature request.

Yeah same, I would love for that to be a thing. Thought it already might be? Not sure it's even the responsibility of bcachefs itself.

Dang, I really have to start reading up on Linux again. Falling behind.