We ran into an issue migrating 'Robot Shop', the redis DB had an empty PV. The Migration attempted to proceed, got stuck for ~1 hour, then was marked successful. Upon trying to use Robot Shop we weren't able to add anything to the 'cart'. After investigation it was determined that the root cause was a bug in Velero working with empty PVs. The below Velero PR is believed to fix the problem https://github.com/vmware-tanzu/velero/pull/2390 "bug fix: save PodVolumeBackup manifests to object storage even if the volume was empty, so that on restore, the PV is dynamically reprovisioned if applicable"
PR for upstream fix, cherry-picked to our repo: https://github.com/konveyor/velero/pull/58
Verified using CAM 1.2 stage A sample application (nginx) using an empty PVC was migrated with no problem.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2020:2326