On Fri, Aug 16, 2024 at 02:50:17PM -0700, Darrick J. Wong wrote: > Is there more to this than generic/260 failing? The only other users of the detection is generic/251, which doesn't seem to care about the exact value. > And if not, does the > following patch things up for you? This works. OTOH it will break again with the zoned RT subvolume which can't support FITRIM even on devices that claim it. And for actual users that care (and not just xfstests) these kinds of hacks don't seem very palatable..