GEFS, the "Good Enough File System" on the horizon for OpenBSD
by from OpenBSD Journal on (#78FPZ)
Filesystems on OpenBSD have come in two varieties, UFS1 or UFS2. Ori Bernstein has set out to possibly introduce a new option, the "Good Enough File System", which Ori describes as
"anew, crash-safe, snapshotting, copy on write FSthat I wrote for 9front, and which I am in theprocess of moving to OpenBSD.
Ori gave a presentation about the work at EuroBSDCon 2026, and posted a summary message titled GEFS on OpenBSD: A very early preview to tech@, inviting hacking and testing:
List: openbsd-techSubject: GEFS on OpenBSD: A very early previewFrom: ori () eigenstate ! orgDate: 2026-09-15 15:45:05Message-ID: EBB049B251DCF60A8C9A0575F6FC7DC9 () eigenstate ! orgBefore anyone asks: I am *not* proposing to putthis in tree for a while yet.What is it----------So, as people may have seen at EuroBSD, I've got arough, buggy, issue-filled preview of GEFS runningon OpenBSD. The port is NOT ready for production,and data loss is currently expected, especially onerror.