Comment 4 for bug 2032377

Reviewed: https://review.opendev.org/c/openstack/ironic-python-agent/+/895519
Committed: https://opendev.org/openstack/ironic-python-agent/commit/33f01fa3c2f32f447ed36f00fea68321c3991c2e
Submitter: "Zuul (22348)"
Branch: master

commit 33f01fa3c2f32f447ed36f00fea68321c3991c2e
Author: Julia Kreger <email address hidden>
Date: Fri Sep 15 15:03:30 2023 -0700

    Fix vmedia network config drive handling

    When performing DHCP-less deployments, the agent can start and
    discover more than one configuration drive present on a host.

    For example, a host was previously deployed using Ironic, and
    is now being re-deployed again.

    If Glean was present in the ramdisk, the glean-early.sh would end
    mounting the folder based upon label.

    If cloud-init, somehow is still in the ramdisk, the other folder
    could somehow get mounted.

    This patch, which is intended to be backportable, causes the agent
    to unmount any configuration drive folders, mount the most likely
    candidate based upon device type, partition, and overall state of
    the machine, and then utilize that configuration, if present,
    to re-configure and reload networking.

    Thus allowing dhcp-less re-deployments to be fixed without
    forcing any breaking changes.

    It should also be noted that this fix was generated in concert
    with an additional tempest test case, because this overall failure
    case needed to be reproduced to ensure we had a workable non-breaking
    path forward.

    Closes-Bug: 2032377
    Change-Id: I9a3b3dbb9ca98771ce2decf893eba7a4c1890eee