B.4 Compatibility of Backup Data with Other MySQL Enterprise Backup Versions

Backups produced with any 3.x version of MySQL Enterprise Backup can be restored using any higher MySQL Enterprise Backup version. However, due to changes with how the file backup-my.cnf is handled, when restoring a backup made by MySQL Enterprise Backup 3.8 or earlier that contains undo logs stored outside of the data directory using MySQL Enterprise Backup 3.9 or later, the option innodb_undo_directory must be correctly specified if backup-my.cnf is used for the --defaults-file option.

Backups produced with MySQL Enterprise Backup 3.8 can be restored using MySQL Enterprise Backup 3.7 or 3.6 using the normal restore procedure. To restore a MySQL Enterprise Backup 3.8 backup using MySQL Enterprise Backup 3.5, copy the files and directories from the datadir subdirectory of the backup into the main backup directory. MySQL Enterprise Backup 3.5 expects the files to restore to be at the top level of the backup directory.