On Mon, Sep 14, 2020 at 06:51:23PM -0700, Darrick J. Wong wrote: > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx> > > If someone runs mkfs with rtinherit=1, a realtime volume configured, and > a protofile that creates a regular file in the filesystem, mkfs will > error out with "Function not implemented" because userspace doesn't know > how to allocate extents from the rt bitmap. Catch this specific case > and hand back a somewhat nicer explanation of what happened. Would this be so hard to fix?