Make 'move_file' command more reliable in 3 innodb tests

The tests innodb.import_tablespace_race, innodn.restart, and innodb.innodb-wl5522 move
the tablespace file between the data directory and the tmp directory specified by
global environment variables. However this is risky because it's not unusual that the
set tmp directory (often under /tmp) is mounted on another disk partition or device,
and 'move_file' command may fail with "Errcode: 18 'Invalid cross-device link.'"

For innodb.import_tablespace_race and innodb.innodb-wl5522, moving files
across directories is not necessary. Modify the tests so they rename
files under the same directory. For innodb.restart, instead of moving
between datadir and MYSQL_TMPDIR, move the files under MYSQLTEST_VARDIR.

All new code of the whole pull request, including one or several files that
are either new files or modified ones, are contributed under the BSD-new license.
I am contributing on behalf of my employer Amazon Web Services, Inc.

mysql-test/suite/innodb/r/innodb-wl5522.result

@@ -63,16 +63,24 @@ a	b	c
 # Done restarting server
 # List before t1 DISCARD
 db.opt
+t1.cfg.sav
 t1.frm
 t1.ibd
+t1.ibd.sav
+t2.cfg.sav
 t2.frm
 t2.ibd
+t2.ibd.sav
 ALTER TABLE t1 DISCARD TABLESPACE;
 # List after t1 DISCARD
 db.opt
+t1.cfg.sav
 t1.frm
+t1.ibd.sav
+t2.cfg.sav
 t2.frm
 t2.ibd
+t2.ibd.sav
 ALTER TABLE t1 IMPORT TABLESPACE;
 ALTER TABLE t1 ENGINE InnoDB;
 SELECT COUNT(*) FROM t1;
@@ -90,10 +98,14 @@ a	b	c
 638	Cavalry	..asdasdfaeraf
 db.opt
 t1.cfg
+t1.cfg.sav
 t1.frm
 t1.ibd
+t1.ibd.sav
+t2.cfg.sav
 t2.frm
 t2.ibd
+t2.ibd.sav
 SELECT COUNT(*) FROM t1;
 COUNT(*)
 640
@@ -112,7 +124,9 @@ ALTER TABLE t2 ROW_FORMAT=DYNAMIC;
 ALTER TABLE t2 DISCARD TABLESPACE;
 # List after t2 DISCARD
 db.opt
+t2.cfg.sav
 t2.frm
+t2.ibd.sav
 ALTER TABLE t2 IMPORT TABLESPACE;
 ERROR HY000: Schema mismatch (Table flags don't match, server table has 0x21 and the meta-data file has 0x1; .cfg file uses ROW_FORMAT=COMPACT)
 ALTER TABLE t2 IMPORT TABLESPACE;

mysql-test/suite/innodb/t/import_tablespace_race.test

@@ -36,8 +36,8 @@ ALTER TABLE t NOWAIT ADD INDEX (c);
 
 FLUSH TABLE t FOR EXPORT;
 --let $create= query_get_value(SHOW CREATE TABLE t, Create Table, 1)
---copy_file $datadir/test/t.cfg $MYSQL_TMP_DIR/t.cfg
---copy_file $datadir/test/t.ibd $MYSQL_TMP_DIR/t.ibd
+--copy_file $datadir/test/t.cfg $datadir/test/t.cfg.sav
+--copy_file $datadir/test/t.ibd $datadir/test/t.ibd.sav
 UNLOCK TABLES;
 
 DROP TABLE t;
@@ -46,8 +46,8 @@ eval $create;
 --enable_query_log
 
 ALTER TABLE t DISCARD TABLESPACE;
---move_file $MYSQL_TMP_DIR/t.cfg $datadir/test/t.cfg
---move_file $MYSQL_TMP_DIR/t.ibd $datadir/test/t.ibd
+--move_file $datadir/test/t.cfg.sav $datadir/test/t.cfg
+--move_file $datadir/test/t.ibd.sav $datadir/test/t.ibd
 ALTER TABLE t IMPORT TABLESPACE;
 
 # Cleanup

mysql-test/suite/innodb/t/innodb-wl5522.test

@@ -9,7 +9,6 @@ call mtr.add_suppression("InnoDB: Unable to import tablespace .* because it alre
 call mtr.add_suppression("Index for table 't2' is corrupt; try to repair it");
 FLUSH TABLES;
 
-let $MYSQLD_TMPDIR = `SELECT @@tmpdir`;
 let $MYSQLD_DATADIR = `SELECT @@datadir`;
 let $checksum_algorithm = `SELECT @@innodb_checksum_algorithm`;
 
@@ -39,10 +38,10 @@ CREATE TABLE t2(a INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=COMPACT;
 FLUSH TABLE t1, t2 FOR EXPORT;
 --echo # List before copying files
 --list_files $MYSQLD_DATADIR/test
---copy_file $MYSQLD_DATADIR/test/t1.cfg $MYSQLD_TMPDIR/t1.cfg
---copy_file $MYSQLD_DATADIR/test/t1.ibd $MYSQLD_TMPDIR/t1.ibd
---move_file $MYSQLD_DATADIR/test/t2.cfg $MYSQLD_TMPDIR/t2.cfg
---copy_file $MYSQLD_DATADIR/test/t2.ibd $MYSQLD_TMPDIR/t2.ibd
+--copy_file $MYSQLD_DATADIR/test/t1.cfg $MYSQLD_DATADIR/test/t1.cfg.sav
+--copy_file $MYSQLD_DATADIR/test/t1.ibd $MYSQLD_DATADIR/test/t1.ibd.sav
+--move_file $MYSQLD_DATADIR/test/t2.cfg $MYSQLD_DATADIR/test/t2.cfg.sav
+--copy_file $MYSQLD_DATADIR/test/t2.ibd $MYSQLD_DATADIR/test/t2.ibd.sav
 UNLOCK TABLES;
 INSERT INTO t1 (b, c) SELECT b,c FROM t1 ORDER BY a;
 SELECT COUNT(*) FROM t1;
@@ -56,8 +55,8 @@ SELECT * FROM t1 ORDER BY a DESC LIMIT 3;
 ALTER TABLE t1 DISCARD TABLESPACE;
 --echo # List after t1 DISCARD
 --list_files $MYSQLD_DATADIR/test
---copy_file $MYSQLD_TMPDIR/t1.cfg $MYSQLD_DATADIR/test/t1.cfg
---copy_file $MYSQLD_TMPDIR/t1.ibd $MYSQLD_DATADIR/test/t1.ibd
+--copy_file $MYSQLD_DATADIR/test/t1.cfg.sav $MYSQLD_DATADIR/test/t1.cfg
+--copy_file $MYSQLD_DATADIR/test/t1.ibd.sav $MYSQLD_DATADIR/test/t1.ibd
 ALTER TABLE t1 IMPORT TABLESPACE;
 ALTER TABLE t1 ENGINE InnoDB;
 SELECT COUNT(*) FROM t1;
@@ -68,15 +67,15 @@ SELECT COUNT(*) FROM t1;
 SELECT * FROM t1 ORDER BY b,a DESC LIMIT 3;
 SELECT * FROM t1 ORDER BY a DESC LIMIT 3;
 DROP TABLE t1;
---remove_file $MYSQLD_TMPDIR/t1.cfg
---remove_file $MYSQLD_TMPDIR/t1.ibd
+--remove_file $MYSQLD_DATADIR/test/t1.cfg.sav
+--remove_file $MYSQLD_DATADIR/test/t1.ibd.sav
 
 ALTER TABLE t2 ROW_FORMAT=DYNAMIC;
 ALTER TABLE t2 DISCARD TABLESPACE;
 --echo # List after t2 DISCARD
 --list_files $MYSQLD_DATADIR/test
---move_file $MYSQLD_TMPDIR/t2.ibd $MYSQLD_DATADIR/test/t2.ibd
---move_file $MYSQLD_TMPDIR/t2.cfg $MYSQLD_DATADIR/test/t2.cfg
+--move_file $MYSQLD_DATADIR/test/t2.ibd.sav $MYSQLD_DATADIR/test/t2.ibd
+--move_file $MYSQLD_DATADIR/test/t2.cfg.sav $MYSQLD_DATADIR/test/t2.cfg
 --error ER_TABLE_SCHEMA_MISMATCH
 ALTER TABLE t2 IMPORT TABLESPACE;
 --remove_file $MYSQLD_DATADIR/test/t2.cfg

mysql-test/suite/innodb/t/restart.test

@@ -4,6 +4,7 @@
 
 let datadir= `select @@datadir`;
 let page_size= `select @@innodb_page_size`;
+let tmp_in_vardir=$MYSQLTEST_VARDIR/tmp;
 
 --echo #
 --echo # MDEV-15333 MariaDB (still) slow start
@@ -28,19 +29,19 @@ call mtr.add_suppression("\\[Warning\\] InnoDB: Ignoring tablespace for `test`\\
 CREATE TABLE tr(a INT)ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
 CREATE TABLE tc(a INT)ENGINE=InnoDB ROW_FORMAT=COMPACT
 PAGE_COMPRESSED=1 PAGE_COMPRESSION_LEVEL=9;
---replace_result $MYSQL_TMP_DIR MYSQL_TMP_DIR
+--replace_result $tmp_in_vardir MYSQL_TMP_DIR
 eval CREATE TABLE td(a INT)ENGINE=InnoDB ROW_FORMAT=DYNAMIC
-STATS_PERSISTENT=0 DATA DIRECTORY='$MYSQL_TMP_DIR';
+STATS_PERSISTENT=0 DATA DIRECTORY='$tmp_in_vardir';
 
 --source include/shutdown_mysqld.inc
 
 --move_file $datadir/test/tr.ibd $datadir/test/tr0.ibd
 --move_file $datadir/test/tc.ibd $datadir/test/tc0.ibd
---move_file $MYSQL_TMP_DIR/test/td.ibd $datadir/test/td0.ibd
+--move_file $tmp_in_vardir/test/td.ibd $datadir/test/td0.ibd
 # TODO: test that MariaDB does not even attempt to open the files
 #--mkdir $datadir/test/tr.ibd
 #--mkdir $datadir/test/tc.ibd
-#--mkdir $MYSQL_TMP_DIR/test/td.ibd
+#--mkdir $tmp_in_vardir/test/td.ibd
 
 perl;
 die unless open OUT, ">", "$ENV{datadir}/test/tr.ibd";
@@ -49,7 +50,7 @@ close OUT or die;
 die unless open OUT, ">", "$ENV{datadir}/test/tc.ibd";
 print OUT "bar " x $ENV{page_size};
 close OUT or die;
-die unless open OUT, ">", "$ENV{MYSQL_TMP_DIR}/test/td.ibd";
+die unless open OUT, ">", "$ENV{tmp_in_vardir}/test/td.ibd";
 print OUT "Xyz " x $ENV{page_size};
 close OUT or die;
 EOF
@@ -67,14 +68,14 @@ AND support IN ('YES', 'DEFAULT', 'ENABLED');
 # TODO: test that MariaDB does not even attempt to open the files
 #--rmdir $datadir/test/tr.ibd
 #--rmdir $datadir/test/tc.ibd
-#--rmdir $MYSQL_TMP_DIR/test/td.ibd
+#--rmdir $tmp_in_vardir/test/td.ibd
 --remove_file $datadir/test/tr.ibd
 --remove_file $datadir/test/tc.ibd
---remove_file $MYSQL_TMP_DIR/test/td.ibd
+--remove_file $tmp_in_vardir/test/td.ibd
 
 --move_file $datadir/test/tr0.ibd $datadir/test/tr.ibd
 --move_file $datadir/test/tc0.ibd $datadir/test/tc.ibd
---move_file $datadir/test/td0.ibd $MYSQL_TMP_DIR/test/td.ibd
+--move_file $datadir/test/td0.ibd $tmp_in_vardir/test/td.ibd
 
 --source include/start_mysqld.inc
 SELECT * FROM tr;
@@ -144,13 +145,13 @@ if ($MTR_COMBINATION_64K)
 }
 
 --error 1
-exec $MYSQLD --no-defaults --skip-networking --innodb_data_file_path=ibdata1:$ibdata_size --innodb-page-size=$page_size --datadir=$MYSQLD_DATADIR --log-error=$MYSQL_TMP_DIR/attempted_start.err;
+exec $MYSQLD --no-defaults --skip-networking --innodb_data_file_path=ibdata1:$ibdata_size --innodb-page-size=$page_size --datadir=$MYSQLD_DATADIR --log-error=$tmp_in_vardir/attempted_start.err;
 
-let SEARCH_FILE= $MYSQL_TMP_DIR/attempted_start.err;
+let SEARCH_FILE= $tmp_in_vardir/attempted_start.err;
 let SEARCH_PATTERN= InnoDB: MySQL-8\.0 tablespace in \./ibdata1;
 source include/search_pattern_in_file.inc;
 
---remove_file $MYSQL_TMP_DIR/attempted_start.err
+--remove_file $tmp_in_vardir/attempted_start.err
 --remove_file $MYSQLD_DATADIR/ibdata1
 --move_file $MYSQLD_DATADIR/ibdata1.bak $MYSQLD_DATADIR/ibdata1