A workaround is to force the logging subsystem to rotate and compress the file more frequently.
The file that controls the logging is: /home/appuser/appserver-config-latest/alm/webapps/slm/WEB-INF/classes/logback.xml
Make a backup of that file
cp /home/appuser/appserver-config-latest/alm/webapps/slm/WEB-INF/classes/logback.xml /home
Edit that file and locate the following line:
(There are several lines that have the word "request" in them; make sure the line matches exactly)
Modify the date pattern by adding a -HH:
This will cause the log files to rotate on an hourly basis and compess the older logs more frequently.
After that you'll need to restart your Agile Central services in the control panel: Use The CA Agile Central And Search Services