* Keep a state if this session was rotated after the last stop command.
* We only allow one rotation after a stop. At destroy, we also need to
* know if a rotation occurred since the last stop to rename the current
* Keep a state if this session was rotated after the last stop command.
* We only allow one rotation after a stop. At destroy, we also need to
* know if a rotation occurred since the last stop to rename the current