I was wondering if bcachefs is architectured with NAND-flash SSD hardware in mind (as recently highlighted on HN in the "Is Sequential IO Dead In The Era Of The NVMe Drive" article [1] [2]), to optimize IO and hardware lifecycle.
Skimming through the "bcachefs: Principles Of Operation" PDF, it appears the answer is no.
Also, the original developer of bcachefs (as well as bcache), Kent Overstreet posts status updates from time to time on his Patreon page.[1]
[0] https://bcachefs.org/bcachefs-principles-of-operation.pdf
[1] https://www.patreon.com/bcachefs