Open Stack

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.
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