The available space in the /var partition decreases while the /var/imss directory size increases.
InterScan Messaging Security Suite (IMSS) removes entries from the database after 61 days (default on the Web UI). However, PostgreSQL does not reclaim the disk space deleted records until the "vacuum" command is executed.
Therefore, it is recommended to run the "vacuum" command using cron job during off-peak hours.
To resolve the issue:
- Install the latest IMSS for Linux service pack and product patch.
- Run the vacuum command:
/opt/trend/imss/PostgreSQL/bin/vacuumdb -U sa -z -d
- After running the command, check the disk space again.
To further ensure that the disk space is not compromised, refer to this article: VACUUM does not work in PostgreSQL.
If the above solution did not resolve the issue, or for further analysis and assistance, contact Trend Micro Technical Support.