Motor parameter before shutdown and after reboot

The MotorLogger is invoked by the tango-motorlogger service during the boot process and also during the shutdown process. These versioned files are created.

/online_dir/MotorLogs/motorLogReboot.lis
/online_dir/MotorLogs/motorShutdown.lis

The file

/online_dir/MotorLogs/ShutdownReboot.lis

is updated during the boot process. The differences between the Shutdown and Reboot files are appended. There shouldn't be any.