In libvirt testing, it was noticed that the newly added kube-storage-version-migrator pod was not coming up on the compute nodes because the node did not satisfy the memory requirements. Bumping the memory to 8G solved the issue.
Verified on latest 4.5
[root@morenod-laptop images]# virsh dumpxml morenod-ocp-42d82-master-0 | grep -i memory
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.