As I understand it, dm-integrity is supposed to graft zfs-like checksumming onto any filesystem. How good is its ability to detect corruption and fix them in a RAID setup?
AIUI, dm-integrity doesn't handle repair at all, it "just" causes checksum errors to bubble up as IO errors on the affected blocks, so whatever you layer on top of it (e.g. Linux MD) can handle it like the disk actually errored out.
