Hi,

I am testing the upgrade from xena to yoga and I made a mistake in globals.yml, I forgot to specify the correct name of gnocchi ceph pool, so my deployment went wrong.

I interrupted the deployment Ctrl+C I corrected the mistake, then I restarted the upgrade and it got stuck somewhere else, but I couldn't find where, I interrupted then restarted the deployment again and it got stuck at the same place.

My questions :

- Is there a way to rollback the upgrade in case of a problem, then start over?

- What is the best way to restart a broken upgrade process?

Regards.