Key points to keep in mind:
* https://review.openstack.org/#/c/600517/ (Oct 3) fs027 switched to podman runtime
* https://review.openstack.org/#/c/604664/ (Oct 9) skopeo switch for preparing containers images
After the switch to podman, undercloud deployment takes +60% longer. And even more longer after the skopeo switch.
See the profiling data https://pastebin.com/pYPUp0sC showing the comparison of https://review.openstack.org/#/c/606220 (podman, not yet skopeo)
vs
https://review.openstack.org/#/c/604664/ (no podman yet for that CI job results taken for Oct 3)
Note, the same https://review.openstack.org/#/c/604664/ patch CI job results taken for Oct 9, after the podman switch, show the same +60% time increase.
Here is also profiling data for https://pastebin.com/pYPUp0sC compared to
https://pastebin.com/wJfYT9e, which is with the skopeo fix https://review.openstack.org/#/c/609586/ in-place
Note, that issue also seems like a major show stopper for other multi node CI jobs now hitting timeouts for mistral workflows and more places (see also https:/ /bugs.launchpad .net/tripleo/ +bug/1789680 )