When an intended exit occurs, rosbag status problem.

edit

It sounds as though you're sending a kill signal to the rosbag node so it's shutting down instantly and not cleaning up the .bag.active file. If you can send a sig int to shut it down instead then it should correctly close the bag file it's recording.

How is the rosbag node being killed? If you can tell us exactly how this is happening then we can suggest a method that should close out the bag file correctly. If you're doing it from a bash script you could use

kill -INT <rosbag PID>

to shut it down as if ctrl+c has been pressed.