Forcing a stop on failure

Hi! I have a playbook that has three plays, each one deploying software to a set of servers . . . if any of these plays fail I want the playbook to stop running. Is that what any_errors_fatal is for? It sounds like it's close, but I can't tell if in the case of multiple plays it will work as I need.

So the top-level playbook is something like this:

- hosts: set_a

roles:

- foo

- hosts: set_b

roles:

- bar

- hosts: set_c

roles:

- baz

At specific points within the roles foo and bar I would like to stop the run if there are failures, most importantly, I do not want set_c to get updated. Any thoughts are greatly appreciated!

Thanks a lot!

Guy