There’s been some Friday night kernel drama on the Linux kernel mailing list… Linus Torvalds has expressed regrets for merging the Bcachefs file-system and an ensuing back-and-forth between the file-system maintainer.
It’s a filesystem that supports all of these features (and in combination):
- snapshotting
- error correction
- per-file or per-directory “transparently compress this”
- per-file of per-directory “transparently back this up”
If that is meaningless to you, that’s fine, but it sure as hell looks good to me. You can just stick with ext3 - it’s rock solid.