Re: [PATCH] Remove Ubuntu 18.04 support from the repository

[Philippe Mathieu-Daudé]

On Thu, May 12, 2022 at 11:21 AM Daniel P. Berrangé <berrange@redhat.com> wrote:
> On Thu, May 12, 2022 at 11:14:45AM +0200, Philippe Mathieu-Daudé wrote:
> > On Wed, May 11, 2022 at 1:15 PM Thomas Huth <thuth@redhat.com> wrote:
> > > On 11/05/2022 13.13, Philippe Mathieu-Daudé wrote:
> > > > On Wed, May 11, 2022 at 1:03 PM Thomas Huth <thuth@redhat.com> wrote:
> > > >> On 11/05/2022 12.46, Philippe Mathieu-Daudé wrote:
> > > >>>    On Wed, May 11, 2022 at 11:30 AM Daniel P. Berrangé
> > > >>> <berrange@redhat.com> wrote:
> > > >>>> On Tue, May 10, 2022 at 09:56:12PM +0200, Thomas Huth wrote:
> > > >>>>> According to our "Supported build platforms" policy, we now do not 
> > > >>>>> support
> > > >>>>> Ubuntu 18.04 anymore. Remove the related files and entries from our 
> > > >>>>> CI.
> > > >>>>>
> > > >>>>> Signed-off-by: Thomas Huth <thuth@redhat.com>
> > > >>>>> ---
> > > >>>>>    Seems like nobody touched the 18.04-based tests/vm/ubuntu* files 
> > > >>>>> in a
> > > >>>>>    very long time, so I assume these are not used anymore and can 
> > > >>>>> completely
> > > >>>>>    be removed now.
> > > >>>>
> > > >>>> Or it could mean that they are working fine and so haven't needed
> > > >>>> changes...
> > > >>>
> > > >>> Yes :)
> > > >>
> > > >> At least for me "make vm-build-ubuntu.aarch64" is only failing with ssh
> > > >> timeouts (on my x86 laptop) ... is this really supposed to work with 
> > > >> TCG, or
> > > >> is this KVM (on arm hosts) only?
> > > >
> > > > Yes this timeout code is not working. I suppose it is tied to the TCG 
> > > > host perf.
> > > > I suggested a pair of patches to increase it but back then Fam didn't 
> > > > accepted
> > > > them because IIRC these VMs were used by patchew (previous to Gitlab).
> > > > Today we have better framework for testing, so I wouldn't use this 
> > > > script on
> > > > CI, but it is still valuable for manual testing.
> > > >
> > > > Robert's email doesn't work anymore. Since I don't have x86 workstation
> > > > anymore, I'll probably use these tests/vm for testing. So let me add a
> > > > "upgrade tests/vm/ubuntu to 22.04" to my TODO list. If I fail and nobody
> > > > miss them, then I won't object to remove them.
> >
> > So, 18.04 is the latest LTS release for 32-bit x86 (i386).
> >
> > IIRC we used this 32-bit VM to reproduce bugs only triggered on 32-bit hosts
> > (while it seems obvious, what is not obvious is that very few developers run
> > on 32-bit hosts, so I'm not sure how long we are interested in avoiding bugs
> > there). See i.e.:
> > https://lore.kernel.org/qemu-devel/07a865e0-d535-9a19-cf29-f90984bcd510@amsat.org/
>
> At some point we'll need to just admit 32-bit host is dead, and that
> point is getting ever closer. For now though, if we need a VM for
> 32-bit testing, the easiest answer is probably to tweak the VM config to
> be Debian based, as that's functionally closest to what Ubuntu provides
> and so likely not too much work.

Thanks for the tip, great idea!