A customer reported that when a node on ESXi is rebooted with an ESXi machine, the images that existed before the reboot are lost after the reboot.　The specific procedure is to restart ESXi and check with podman images after the node is booted.

I would like to ask if this is the expected cleaning up of the developer.

Customer's environment is 4.11 on vSphere.
My environment is 4.13 on AWS and I reproduced the following steps

I did not reproduce this by simply stopping the instance in my AWS verification environment. However, I was able to reproduce it by running echo c > /proc/sysrq-trigger to intentionally cause kernel panic and then reboot.

1.Deploy an appropriate pod to a node, and then reduce the number of replicas or otherwise make the pod unscheduled. In this test, httpd was deployed.

2.Check the images using podman images. Obtain other ls results as well. 
#podman images --all
REPOSITORY                                                        TAG         IMAGE ID      CREATED      SIZE
image-registry.openshift-image-registry.svc:5000/openshift/httpd  <none>      4c2e3e6ed803  3 days ago   454 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      781a37f1fe2f  2 weeks ago  453 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      54541c943861  2 weeks ago  455 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      3976fb9d3385  2 weeks ago  549 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      deda63aac062  3 weeks ago  622 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      06c3508474ed  3 weeks ago  806 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      2e93e1fa02de  3 weeks ago  365 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      2bdce6613e65  3 weeks ago  508 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      5fd99b169b27  3 weeks ago  767 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      530aaab5f11b  3 weeks ago  916 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      e7d9a027abca  3 weeks ago  456 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      f17170cae8db  3 weeks ago  454 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      65df008b154e  3 weeks ago  484 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      43f894469415  3 weeks ago  384 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      c76f55db8fbb  3 weeks ago  347 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      8d66687d9781  3 weeks ago  404 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      11e33901d661  3 weeks ago  374 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      c5c53d84e7fe  3 weeks ago  454 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      1e91c9731ae4  3 weeks ago  417 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      5c5a5dd41dc1  3 weeks ago  401 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      06a2691e725c  3 weeks ago  446 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      d7841824be9b  3 weeks ago  380 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      d298c30a25d0  3 weeks ago  366 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      838ebd6278bd  3 weeks ago  431 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      cb9e81fdf506  3 weeks ago  437 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      2a2a90c629d8  3 weeks ago  342 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      9dede6d5713e  3 weeks ago  617 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      39f285a6e873  3 weeks ago  415 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      599e0f50ede7  3 weeks ago  590 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      7edeff8495a6  3 weeks ago  382 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      3657b7793308  3 weeks ago  368 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev                    <none>      f5189c73bf7e  3 weeks ago  331 MB

3. Stopping after letting os panic.
#echo c > /proc/sysrq-triggerStop 

The node instance in the AWS console after executing the above.

4. Booting up the node
Confirm that the node has become NotReady and is also stopped in the AWS console article, after that start it up.5. Confirm information as in step 2.

#podman images --all
REPOSITORY                                      TAG         IMAGE ID      CREATED      SIZE
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      deda63aac062  3 weeks ago  622 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      06c3508474ed  3 weeks ago  806 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      2e93e1fa02de  3 weeks ago  365 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      2bdce6613e65  3 weeks ago  508 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      5fd99b169b27  3 weeks ago  767 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      530aaab5f11b  3 weeks ago  916 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      e7d9a027abca  3 weeks ago  456 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      f17170cae8db  3 weeks ago  454 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      c76f55db8fbb  3 weeks ago  347 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      1e91c9731ae4  3 weeks ago  417 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      06a2691e725c  3 weeks ago  446 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      d7841824be9b  3 weeks ago  380 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      d298c30a25d0  3 weeks ago  366 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      9dede6d5713e  3 weeks ago  617 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      599e0f50ede7  3 weeks ago  590 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      7edeff8495a6  3 weeks ago  382 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      3657b7793308  3 weeks ago  368 MB
quay.io/openshift-release-dev/ocp-v4.0-art-dev  <none>      f5189c73bf7e  3 weeks ago  331 MB

I attach on test1.tar including results.
The following output is recorded before and after the reboot.

# podman images --all
# ls -lR /var/lib/containers/ --ignore="overlay"

I would like to know if this is the expected behavior, as it appears to be a non-gracefull shutdown that cleans up all images. If it is intended, it should output some logs meaning clean up.