We frequently see specific types of failures occur on the cnv-4.12-network-ovn lane:
https://main-jenkins-csb-cnvqe.apps.ocp-c1.prod.psi.redhat.com/job/test-kubevirt-cnv-4.12-network-ovn-ocs/
These usually present themselves as a test failure with the following error:

Unexpected Warning event received: testvmi-pnsj4,77452e3c-155a-44dd-bfa0-43ffacfe9bb5: failed to detect root mount point of containerDisk disk0 on the node: no mount containing / found in the mount namespace of pid 1 Expected <string>: Warning not to equal <string>: Warning

And are exclusive to the network 4.12 lane.

This card is about investigating the root cause for these.

Current findings:

• /proc/1/mountinfo on the node doesn't have the containerdisk container mount in it (the mount doesn't exist?)
• [test_id:676] seems to trigger it often (local cluster-sync/functest against external cluster)
• This happens from 4.12.6 onwards (4.12.5 doesn't get these errs)
• Diff between 4.12.5 and 4.12.6