DB Commands

Commands in the DB module include:

Command	Description
guc-create	Create a database owned by a specific user.
guc-set	Set a GUC value in a Postgres database.
guc-show	Show the current value of a GUC.
db-set-readonly	Turn Postgres read-only mode 'on' or 'off'.
db-test-io	Use the 'fio' Flexible IO Tester on the Postgres data directory