The podresources e2e tests want to exercise the case on which a device
plugin doesn't report topology affinity. The only known device plugin
which had this requirement and didn't depend on specialized hardware
was the kubevirt device plugin, which was however deprecated after
we started using it.
So the e2e tests are now broken, and in any case they can't depend on
unmaintained and liable to be obsolete code.
To unblock the state and preserve some e2e signal, we switch to the
sample device plugin, which is a stub implementation and which is
managed in-tree, so we can maintain it and ensure it fits the e2e test
usecase.
This is however a regression, because e2e tests should try their hardest
to use real devices and avoid any mocking or faking.
The upside is that using a OS-neutral device plugin for the tests enables
us to run on all the supported platform (windows!) so this could allow
us to transition these tests to conformance.
Signed-off-by: Francesco Romani <fromani@redhat.com>
If device plugin returns device without topology, keep it internaly
as NUMA node -1, it helps at podresources level to not export NUMA
topology, otherwise topology is exported with NUMA node id 0,
which is not accurate.
It's imposible to unveile this bug just by tracing json.Marshal(resp)
in podresource client, because NUMANodes field ID has json property
omitempty, in this case when ID=0 shown as emtpy NUMANode.
To reproduce it, better to iterate on devices and just
trace dev.Topology.Nodes[0].ID.
Signed-off-by: Alexey Perevalov <alexey.perevalov@huawei.com>
We cannot anticipate all the possible configurations
needed by the SRIOV device plugin: there is too much variety.
Hence, we need to allow the test environment to supply
a host-specific ConfigMap to properly configure the device
plugin and avoid false negatives.
We still provide a the default config map as fallback and reference.
Signed-off-by: Francesco Romani <fromani@redhat.com>
This patch all the testing infra and utilities needed
to run e2e topology manager tests. This include setup
a guaranteed pod which needs some devices.
The simplest real device available for the purpose
are the SRIOV devices, hence we use them.
This patch pulls the SRIOV device plugin from
the official, yet external, repository.
We do it as close as possible for the nvidia GPU plugin.
This patch also performs minor refactoring for some
test framework utilities, needed to support the new
e2e tests.
Finally, we add an empty e2e topology manager test,
to be completed by the next patch.
Signed-off-by: Francesco Romani <fromani@redhat.com>
