Re: "make check-acceptance" takes way too long

[Thomas Huth]

On 21/01/2022 13.23, Alex Bennée wrote:
> Peter Maydell <peter.maydell@linaro.org> writes:
>
> > On Fri, 21 Jan 2022 at 10:50, Markus Armbruster <armbru@redhat.com> wrote:
> > > No objection, but it's no replacement for looking into why these tests
> > > are so slow.
> > >
> > > The #1 reason for things being slow is not giving a damn :)
> >
> > See previous messages in the thread -- the test starts a
> > full-fat guest OS including UEFI boot, and it takes forever to
> > get to the login prompt because systemd is starting everything
> > including the kitchen sink.
>
> There has to be a half-way house between booting a kernel until it fails
> to find a rootfs and running a full Ubuntu distro. Maybe just asking
> systemd to reach "rescue.target" would be enough to show the disks are
> up and userspace works.

In case it helps: We're already doing that in 
tests/avocado/machine_s390_ccw_virtio.py : For the Debian kernel, booting 
with BOOT_DEBUG=3 worked out pretty well, and for the Fedora kernel 
"rd.rescue" did the job. Also unpacking the Fedora ramdisk on the host 
proved to be quite faster than letting the guest unpacking the ramdisk on 
its own.

 Thomas