How much free disk space needed to run the ometascan-db-vacuum tool successfully?

Issue

The ometascan-db-vacuum tool can fail if there is insufficient free disk space on the MetaDefender Core server. In vacuum_running.log, you may see an error similar to:

Troubleshooting steps

• Check the free disk space

  • Verify the available space on the drive where MD Core is installed.

• Check the biggest table size

  • Generate a MetaDefender Core support package: How to Create Support Package With Bundle Tools? - MetaDefender Core

  • Unzip the support package and navigate to the database folder

  • Open biggest_tables.csv, sort by the total_size column in descending order to find the largest table

Resolution

The ometascan-db-vacuum tool requires at least 1.5 times the size of the largest table in free disk space to run successfully.

• Example: If the largest table is 20GB, ensure at least 30GB of free disk space

This requirement exists because the vacuum process creates a temporary copy of the table during optimization.