Re: [Qemu-devel] [PATCH 2/3] iotests: use -ccw on s390x for 051

[Cornelia Huck <cohuck@redhat.com>]

On Fri, 8 Sep 2017 17:55:29 +0200
Thomas Huth <thuth@redhat.com> wrote:

> On 08.09.2017 13:54, Kevin Wolf wrote:
> > Am 08.09.2017 um 13:24 hat Cornelia Huck geschrieben:  
> >> On Fri, 8 Sep 2017 13:04:25 +0200
> >> Kevin Wolf <kwolf@redhat.com> wrote:
> >>  
> >>> Am 05.09.2017 um 17:16 hat Cornelia Huck geschrieben:  
> >>>> The default cpu model on s390x does not provide zPCI, which is
> >>>> not yet wired up on tcg. Moreover, virtio-ccw is the standard
> >>>> on s390x, so use the -ccw instead of the -pci versions of virtio
> >>>> devices on s390x.
> >>>>
> >>>> Provide an output file for s390x.
> >>>>
> >>>> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> >>>> ---
> >>>>  tests/qemu-iotests/051                     |   9 +-
> >>>>  tests/qemu-iotests/051.s390-ccw-virtio.out | 434 +++++++++++++++++++++++++++++
> >>>>  2 files changed, 442 insertions(+), 1 deletion(-)
> >>>>  create mode 100644 tests/qemu-iotests/051.s390-ccw-virtio.out    
> >>>
> >>> It's already a pain to have two separate output files for 051, let's try
> >>> to avoid adding a third one. Even more so since I think that the split
> >>> between 051.out and 051.pc.out was already made for s390, so I'm not
> >>> sure if anyone would actually still make use of the plain 051.out
> >>> output if s390 got it's own one.  
> >>
> >> Are there no non-pc and non-s390 machines for which this is run?  
> > 
> > Who knows? But I'm not aware of anyone who is interested in something
> > else and has contributed to the test cases until now.  
> 
> FWIW, as far as I know, Lukáš is running this test also on ppc64 in our
> weekly regression run. So it would be good to keep that working, please :-)
> 
> >> Another approach would be to drop the -pci postfix, but I don't want to
> >> introduce more usage of aliases.  
> > 
> > Maybe that would indeed be the easiest way. As long as we don't intend
> > to remove the alias from qemu, there's no reason not to use it in tests.  
> 
> Maybe we should even use it in a couple of places on purpose - so we get
> some test coverage for them?

FWIW, using the the sed post-run filtering works well for 051, but it
is driving me bonkers on 067 (or maybe I should just call it a day...)

We could use the sed approach for 051 and the alias approach on 067 -
that way we would also test aliases :)

Any preferences by the iotest maintainers?

[I'd be happy if iotests worked again on s390x...]