DEV-17786: Add mariabackup test case for galera_sst_xtrabackup-v2_data_dir

Currently there is no test file in the project that would
check the operation of the matiabackupt SST script with
the innodb_data_home_dir parameter. This fix adds this
test to the galera test suite.

https://jira.mariadb.org/browse/MDEV-17786

mysql-test/suite/galera/r/galera_sst_mariabackup_data_dir,debug.rdiff

+--- r/galera_sst_mariabackup_data_dir.result	2018-12-12 13:59:56.525554689 +0100
++++ r/galera_sst_mariabackup_data_dir.reject	2018-12-12 14:33:50.868181956 +0100
+@@ -286,5 +286,113 @@
+ DROP TABLE t1;
+ COMMIT;
+ SET AUTOCOMMIT=ON;
++Performing State Transfer on a server that has been killed and restarted
++while a DDL was in progress on it
++connection node_1;
++CREATE TABLE t1 (f1 CHAR(255)) ENGINE=InnoDB;
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++INSERT INTO t1 VALUES ('node1_committed_before');
++connection node_2;
++START TRANSACTION;
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++INSERT INTO t1 VALUES ('node2_committed_before');
++COMMIT;
++SET GLOBAL debug_dbug = 'd,sync.alter_opened_table';
++connection node_1;
++ALTER TABLE t1 ADD COLUMN f2 INTEGER;
++connection node_2;
++SET wsrep_sync_wait = 0;
++Killing server ...
++connection node_1;
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++INSERT INTO t1 (f1) VALUES ('node1_committed_during');
++COMMIT;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++connect node_1a_galera_st_kill_slave_ddl, 127.0.0.1, root, , test, $NODE_MYPORT_1;
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++connection node_2;
++Performing --wsrep-recover ...
++connection node_2;
++Starting server ...
++Using --wsrep-start-position when starting mysqld ...
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++INSERT INTO t1 (f1) VALUES ('node2_committed_after');
++COMMIT;
++connection node_1;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_committed_after');
++COMMIT;
++SET AUTOCOMMIT=OFF;
++START TRANSACTION;
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++INSERT INTO t1 (f1) VALUES ('node1_committed_after');
++COMMIT;
++connection node_1a_galera_st_kill_slave_ddl;
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++INSERT INTO t1 (f1) VALUES ('node1_to_be_rollbacked_after');
++ROLLBACK;
++SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
++COUNT(*) = 2
++1
++SELECT COUNT(*) = 35 FROM t1;
++COUNT(*) = 35
++1
++SELECT COUNT(*) = 0 FROM (SELECT COUNT(*) AS c, f1 FROM t1 GROUP BY f1 HAVING c NOT IN (5, 10)) AS a1;
++COUNT(*) = 0
++1
++COMMIT;
++SET AUTOCOMMIT=ON;
++connection node_1;
++SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
++COUNT(*) = 2
++1
++SELECT COUNT(*) = 35 FROM t1;
++COUNT(*) = 35
++1
++SELECT COUNT(*) = 0 FROM (SELECT COUNT(*) AS c, f1 FROM t1 GROUP BY f1 HAVING c NOT IN (5, 10)) AS a1;
++COUNT(*) = 0
++1
++DROP TABLE t1;
++COMMIT;
++SET AUTOCOMMIT=ON;
++SET GLOBAL debug_dbug = $debug_orig;
+ disconnect node_2;
+ disconnect node_1;

mysql-test/suite/galera/t/galera_sst_mariabackup_data_dir.cnf

+!include ../galera_2nodes.cnf
+
+[mysqld]
+wsrep_sst_method=mariabackup
+wsrep_sst_auth="root:"
+wsrep_debug=ON
+
+[mysqld.1]
+wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.size=1;pc.ignore_sb=true'
+
+[mysqld.2]
+innodb_data_home_dir=@ENV.MYSQL_TMP_DIR/data_dir_test
+wsrep_provider_options='base_port=@mysqld.2.#galera_port;gcache.size=1;pc.ignore_sb=true'
+
+[sst]
+transferfmt=@ENV.MTR_GALERA_TFMT
+streamfmt=xbstream

mysql-test/suite/galera/t/galera_sst_mariabackup_data_dir.test

+--source include/big_test.inc
+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+--source include/have_mariabackup.inc
+
+# Save original auto_increment_offset values.
+--let $node_1=node_1
+--let $node_2=node_2
+--source include/auto_increment_offset_save.inc
+
+--source suite/galera/include/galera_st_shutdown_slave.inc
+--source suite/galera/include/galera_st_clean_slave.inc
+
+--source suite/galera/include/galera_st_kill_slave.inc
+--source suite/galera/include/galera_st_kill_slave_ddl.inc
+
+# Restore original auto_increment_offset values.
+--source include/auto_increment_offset_restore.inc
+
+--source include/galera_end.inc
+
+# cleanup temporary database files:
+--remove_files_wildcard $MYSQL_TMP_DIR/data_dir_test *