# Create 2 UNDO TABLESPACE(UNDO003, UNDO004)
CREATE TABLE t1(a varchar(60)) ENGINE INNODB;
start transaction;
INSERT INTO t1 VALUES(1);
# xtrabackup backup
# Display undo log files from target directory
undo003
undo004
# xtrabackup prepare
# Display undo log files from targer directory
undo003
undo004
DROP TABLE t1;