Comment 2 for bug 154012

If fast fails to shut the database down that means that something is seriously wrong, and pg_ctlcluster should exit with an error.

Perhaps it would be best to allow the shutdown mode as an option to the stop command.

I also disagree with changing the default PostgreSQL behavior without a very good reason. It would be better if the default stop behavior was the same as it is in PostgreSQL, though I guess that would mean having a different command for system shutdown to use, which probably won't happen...