I have a FS running and due to a hardware problem need to reboot the machine. I would like to preserve recovery information (so calls can resume). Is it possible to use the shutdown command to gracefully shutdown FS without clearing the recovery data? The manual shows shutdown options as: shutdown [asap|asap restart|cancel|elegant|now|restart|restart asap|restart elegant] and I'm wondering if the 'now' parameters does this? If not I assume I have to kill -SIGKILL the process, to ensure that recovery data is not cleared out?