--source include/have_innodb.inc
--source include/innodb_page_size.inc

let basedir=$MYSQLTEST_VARDIR/tmp/backup;
let incremental_dir=$MYSQLTEST_VARDIR/tmp/backup_inc1;

set global innodb_fast_shutdown=0;
let $restart_parameters=--innodb_undo_tablespaces=2;
--source include/restart_mysqld.inc

CREATE TABLE t1(a varchar(60)) ENGINE INNODB;
start transaction;
INSERT INTO t1 VALUES(1);

--echo # xtrabackup backup
--disable_result_log
exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir=$basedir;
--enable_result_log

--echo # Restart the server with 4 undo tablespaces
let $restart_parameters=--innodb_undo_tablespaces=4;
set global innodb_fast_shutdown=0;
--source include/restart_mysqld.inc

let $backuplog=$MYSQLTEST_VARDIR/tmp/backup.log;
--echo # incremental backup should fail
--error 1
exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf   --backup --target-dir=$incremental_dir --incremental-basedir=$basedir 2> $backuplog;

--let SEARCH_PATTERN=--incremental backup is impossible if the server had been restarted with different innodb_undo_tablespaces
--let SEARCH_FILE=$backuplog
--source include/search_pattern_in_file.inc
remove_file $backuplog;
rmdir $incremental_dir;
rmdir $basedir;

--echo # Take full backup again
--disable_result_log
exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir=$basedir;
--enable_result_log
--disable_result_log

echo # Prepare full backup;
exec $XTRABACKUP --prepare --target-dir=$basedir;

--echo # Display 4 undo log files from target directory
list_files $basedir undo*;

DROP TABLE t1;
rmdir $basedir;