How to Set the Startup Script to Trim Log Files

To modify the way that Backup services manage the Backup log files, change the following environmental variables in the Backup startup script, networker in the /etc/init.d directory before you start the nsrd daemon:

• To change the maximum size of log files, change the NSR_MAXLOGSIZE value. The default value for NSR_MAXLOGSIZE is 1024 KB.

• To change the maximum number of log files that are saved, change the NSR_MAXLOGVERS value. The default value is 4.

Every time nsrd starts, it checks the size of the daemon.log file. By default, when the daemon.log file reaches the 1024 KB limit, it is renamed daemon.001 and a new empty daemon.log is created. If the daemon.log file fills again, the names of each existing file shift so that the daemon.001 file is renamed daemon.002, daemon.log is renamed daemon.001, and a new empty daemon.log file is created. This process is repeated until the value in NSR_MAXLOGVERS is reached, at which point the highest numbered log is removed.

The trimming mechanism only functions when you start nsrd. The nsrd daemon does not check periodically to see whether the log file has exceeded NSR_MAXLOGSIZE. If nsrd runs for a long time, the log file can still grow very large. To activate the trimming mechanism, enter nsr_shutdown to stop the Backup daemons, then restart the nsrd and nsrexecd daemons.