select @@ignore_db_dirs;
@@ignore_db_dirs
db3,db4
CREATE TABLE t1(i INT) ENGINE INNODB;
INSERT INTO t1 VALUES(1);
CREATE TABLE t2(i int) ENGINE INNODB;
CREATE DATABASE db2;
USE db2;
CREATE TABLE t1(i INT) ENGINE INNODB;
USE test;
# xtrabackup backup
t1.ibd
DROP TABLE t1;
DROP TABLE t2;
DROP DATABASE db2;