[ovirt-devel] Adding s390 support to oVirt

[Barak Korren]

On 16 November 2017 at 18:52, Viktor Mihajlovski
<mihajlov at linux.vnet.ibm.com> wrote:
>
> Short update, with yesterday's API model 4.2.25 release, there's basic
> support for s390 available in ovirt-engine. At this point in time, there
> are no ovirt yum repositories for the s390x architecture - not sure what
> the process would be to add s390x repositories and how to build the
> binary RPMs at least for the host packages (i.e. vdsm-*). Maybe it would
> possible to use the s390-koji infrastructure used to build Fedora for s390x?

Koji is very opinionated about how RPMs and specfiles should look,
AFAIK A pretty massive amount of work would be needed to make
everything that is needed for a node to build on it, and then we would
end up with a process that is quite different with how we currently do
builds for other platforms.

(I might be wrong about this, since some oVirt packages get also built
as part of the CentOS virt SIG, and that is done using Koji as well)

More specifically, Koji usually assumes the starting point for the
build process would be a specfile, while in oVirt we typically
generated the specfile and then the RPM as part of a bigger build
process.

Does fedora have an s390x server associated to it?
We do use the same basic environment setup tool - mock - as the basis
of our build infrastructure, so if Fedora is actually emulating s390x
is some way while using mock, we might be able to do the same thing.

Just for general knowledge, the process for building oVirt repos, is
to have *-build-artifacts-* jobs for each project that build RPM's
after patches get merged, and then have the change-queue to collect
the built packages, rung them through ovirt-system-tests (a.k.a. OST)
and finally deposit them into the 'tested' rpoe, from which they are
copied nightly to the '*-snapshot' repos.

OST only tests for CentOS 7/x86_64 ATM, but we bring along packages
for other distros and architectures via the same process while
assuming that if a package for a given commit works for CentOS
7/x86_64 it would probably work for other platforms as well...

-- 
Barak Korren
RHV DevOps team , RHCE, RHCi
Red Hat EMEA
redhat.com | TRIED. TESTED. TRUSTED. | redhat.com/trusted