Constant zebra_state::constants::DATABASE_FORMAT_MINOR_VERSION

const DATABASE_FORMAT_MINOR_VERSION: u64 = 3;

The database format minor version, incremented each time the on-disk database format has a significant data format change.

Significant changes include:

• adding new column families,
• changing the format of a column family in a compatible way, or
• breaking changes with compatibility code in all supported Zebra versions.