FTR, there is no reason to make this specific to Ubuntu or systemd -- "nofail" is the defined by util-linux, it's not a systemd specific thing. upstart introduced "nobootwait" some years ago, but it has always been an upstart specific alias for the official "nofail".
FTR, there is no reason to make this specific to Ubuntu or systemd -- "nofail" is the defined by util-linux, it's not a systemd specific thing. upstart introduced "nobootwait" some years ago, but it has always been an upstart specific alias for the official "nofail".