MicroShift V4.14.x ostree based deployment, with container images embedded into the commit. Initial install with 4.14.1, then upgrade to 4.14.20 (with .20 container images). 

4.14.1 / .20

see steps below. is always reproducible, tried it 3 times. also reboot of the rolled-back-to4.1.14 version does not fix it. 

1. Build a V4.14.1 ostree commit with required container images embedded (from releasinfo-package). Install VM with that. Works fine.
2. Build a V4.14.20 ostree commit with required container images embedded. Upgrade VM with that. Works fine, microshift starts as expected.
3. rpm-ostree rollback to the V4.14.1 image.

microshift fails to start. console is full of messages like:
Apr 12 20:17:48 ushift-edge1 kernel: overlayfs: failed to resolve '/var/lib/containers/storage/overlay/l/U5GDNGO6CU5DAVQGEFCJOPDDR2': -2

4.14.1 should come up

reproducer system is available on red hat VPN