Re: [PATCH] formalize and fix disabling the RT subvolume

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

On Thu, Jul 02, 2026 at 12:33:23PM +0200, Christoph Hellwig wrote:
> On Wed, Jul 01, 2026 at 09:51:14AM -0700, Darrick J. Wong wrote:
> > Ahaha ok with this patch applied, the regressions I see in generic/441
> > and xfs/656 go away.  generic/441 chokes because the scratch fs goes
> > down due to writeback error, so I assume it's ok to start excluding this
> > test.
> 
> There also is a dedicated patch disabling them for zoned on the list":
> 
> "common: skip data write EIO survival tests on fatal configs"
> 
> from Yao Sang.
> 
> > I'm guessing that the write failure takes down the filesystem, which is
> > why the subsequent xfs_io pread can't even open the file.
> 
> Yes.
> 
> > 
> > Also the comment in xfs/655 and 656 doesn't make sense:
> > 
> >  # Disable the scratch rt device to avoid test failures relating to the
> >  # rt bitmap consuming all the free space in our small data device.
> >  unset SCRATCH_RTDEV
> > 
> > We're creating a regular sized data device, so this shouldn't be an
> > issue.
> 
> I think this has been copy and pasted with the unsetting of SCRATCH_RTDEV,
> as several tests have it..

Yes.  I apologize for my contributions to the copy-pasta :(

--D