Re: [PATCH 6/8] xfs/122: update test to pick up rtword/suminfo ondisk unions

["Darrick J. Wong" <djwong@kernel.org>]

On Wed, Feb 28, 2024 at 07:39:29AM -0800, Christoph Hellwig wrote:
> On Tue, Feb 27, 2024 at 05:27:04PM -0800, Darrick J. Wong wrote:
> > On Tue, Feb 27, 2024 at 06:54:41AM -0800, Christoph Hellwig wrote:
> > > Can we please just kill the goddamn test?  Just waiting for the
> > > xfsprogs 6.8 resync to submit the static_asserts for libxfs that
> > > will handle this much better.
> > 
> > I'll be very happen when we scuttle xfs/122 finally.
> > 
> > However, in theory it's still be useful for QA departments to make sure
> > that xfsprogs backports (HA!) don't accidentally break things.
> > 
> > IOWs, I advocate for _notrunning this test if xfsprogs >= 6.8 is
> > detected, not removing it completely.
> > 
> > Unless someone wants to chime in and say that actually, nobody backports
> > stuff to old xfsprogs?  (We don't really...)
> 
> Well, who is going to backport changes to the on-disk format in a way
> that is complex enough to change strutures, and not also backport the
> patch to actually check the sizes?  Sounds like a weird use case to
> optimize for.

It turns out that xfs/122 also captures ioctl structure sizes, and those
are /not/ captured by xfs_ondisk.h.  I think we should add those before
we kill xfs/122.

--D