Server Version and Backup Version Comparison¶

Percona XtraBackup 8.0.21 adds the --no-server-version-check parameter. This parameter compares the source system version to the Percona XtraBackup version.

The parameter checks for the following scenarios:

• The source system and the PXB version are the same, the backup proceeds
• The source system is less than the PXB version, the backup proceeds
• The source system is greater than the PXB version, and the parameter is not overridden, the backup is stopped and returns an error message
• The source system is greater than the PXB version, and the parameter is overridden, the backup proceeds

Explicitly adding the --no-server-version-check parameter, like the example, overrides the parameter and the backup proceeds.

$ xtrabackup --backup --no-server-version-check --target-dir=$mysql/backup1

When you override the parameter, the following events can happen:

• Backup fails
• Creates a corrupted backup
• Backup successful