838 lines
23 KiB
Plaintext
838 lines
23 KiB
Plaintext
# This test changes undo related settings both at runtime, between restarts,
|
|
# and also after crashes.
|
|
# Note that innodb_undo_tablespaces is now fixed at 2 so only
|
|
# innodb_rollback_segments is tested here.
|
|
SET DEFAULT_STORAGE_ENGINE=InnoDB;
|
|
SET GLOBAL innodb_monitor_enable='module_buffer_page';
|
|
SET GLOBAL innodb_monitor_enable='trx_rseg_current_size';
|
|
#
|
|
# Create tables and check the default values.
|
|
#
|
|
CREATE TABLESPACE `ts1` ADD DATAFILE 'ts1.ibd';
|
|
CREATE TABLE t1 (a INT, b TEXT) TABLESPACE=`ts1`;
|
|
CREATE TABLE t2 (a INT, b TEXT) TABLESPACE=`innodb_system`;
|
|
CREATE TABLE t3 (a INT, b TEXT) TABLESPACE=`innodb_file_per_table`;
|
|
# Connection 1
|
|
INSERT INTO t1 VALUES (1, repeat('a',15));
|
|
INSERT INTO t2 VALUES (1, repeat('a',15));
|
|
INSERT INTO t3 VALUES (1, repeat('a',15));
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
1
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
1
|
|
# Connection 2
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
1
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
1
|
|
XA START 'x1';
|
|
INSERT INTO t1 VALUES (101, repeat('x1 ',5));
|
|
INSERT INTO t2 VALUES (101, repeat('x1 ',5));
|
|
INSERT INTO t3 VALUES (101, repeat('x1 ',5));
|
|
# Connection default
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 1
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 2
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 0
|
|
Innodb_undo_tablespaces_active 2
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
#
|
|
# Change number of UNDO tablespaces from 2 to 3 while online.
|
|
#
|
|
CREATE UNDO TABLESPACE `undo_003` ADD DATAFILE 'undo_003.ibu';
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 1
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 3
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 1
|
|
Innodb_undo_tablespaces_active 3
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
# Connection 1
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES (2, repeat('b',15));
|
|
INSERT INTO t2 VALUES (2, repeat('b',15));
|
|
INSERT INTO t3 VALUES (2, repeat('b',15));
|
|
# Connection 2
|
|
XA END 'x1';
|
|
XA PREPARE 'x1';
|
|
XA COMMIT 'x1';
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
101 x1 x1 x1 x1 x1
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
2
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
2
|
|
XA START 'x2';
|
|
INSERT INTO t1 VALUES (102, repeat('x2 ',5));
|
|
INSERT INTO t2 VALUES (102, repeat('x2 ',5));
|
|
INSERT INTO t3 VALUES (102, repeat('x2 ',5));
|
|
XA END 'x2';
|
|
# Connection default
|
|
#
|
|
# Change number of UNDO tablespaces from 3 to 4 while online.
|
|
# Change number of Rollback Segments from 1 to 4 while online.
|
|
#
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 1
|
|
SET GLOBAL innodb_rollback_segments=4;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 4
|
|
CREATE UNDO TABLESPACE `undo_004` ADD DATAFILE 'undo_004.ibu';
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 4
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 2
|
|
Innodb_undo_tablespaces_active 4
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
101 x1 x1 x1 x1 x1
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
2
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
2
|
|
# Connection 1
|
|
COMMIT;
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
101 x1 x1 x1 x1 x1
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
3
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
3
|
|
INSERT INTO t1 VALUES (3, repeat('c',15));
|
|
INSERT INTO t2 VALUES (3, repeat('c',15));
|
|
INSERT INTO t3 VALUES (3, repeat('c',15));
|
|
# Connection 2
|
|
XA PREPARE 'x2';
|
|
XA COMMIT 'x2';
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
5
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
5
|
|
XA START 'x3';
|
|
INSERT INTO t1 VALUES (103, repeat('x3 ',5));
|
|
INSERT INTO t2 VALUES (103, repeat('x3 ',5));
|
|
INSERT INTO t3 VALUES (103, repeat('x3 ',5));
|
|
XA END 'x3';
|
|
XA PREPARE 'x3';
|
|
XA COMMIT 'x3';
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
6
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
6
|
|
# Connection default
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
6
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
6
|
|
#
|
|
# Change number of active UNDO tablespaces from 4 to 2 while online.
|
|
# Change number of Rollback Segments from 4 to 2 while online.
|
|
#
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 4
|
|
SET GLOBAL innodb_rollback_segments=2;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 2
|
|
ALTER UNDO TABLESPACE `undo_003` SET INACTIVE;
|
|
ALTER UNDO TABLESPACE `undo_004` SET INACTIVE;
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 4
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 2
|
|
Innodb_undo_tablespaces_active 2
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo empty
|
|
undo_004 Undo Undo empty
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
INSERT INTO t1 VALUES (4, repeat('d',15));
|
|
INSERT INTO t2 VALUES (4, repeat('d',15));
|
|
INSERT INTO t3 VALUES (4, repeat('d',15));
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
7
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
7
|
|
#
|
|
# Change number of UNDO tablespaces from 2 to 5 while online.
|
|
# Change number of Rollback Segments from 2 to 5 while online.
|
|
#
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 2
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 4
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 2
|
|
Innodb_undo_tablespaces_active 2
|
|
SET GLOBAL innodb_rollback_segments=5;
|
|
ALTER UNDO TABLESPACE `undo_003` SET ACTIVE;
|
|
ALTER UNDO TABLESPACE `undo_004` SET ACTIVE;
|
|
CREATE UNDO TABLESPACE `undo_005` ADD DATAFILE 'undo_005.ibu';
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 5
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 5
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 3
|
|
Innodb_undo_tablespaces_active 5
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
# Connection 1
|
|
INSERT INTO t1 VALUES (5, repeat('e',15));
|
|
INSERT INTO t2 VALUES (5, repeat('e',15));
|
|
INSERT INTO t3 VALUES (5, repeat('e',15));
|
|
# Connection default
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
8
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
8
|
|
#
|
|
# Shutdown mysqld cleanly.
|
|
# Delete one of the implicit UNDO tablespaces.
|
|
# Change number of Rollback Segments from 5 to 6 while offline.
|
|
# Restart mysqld with these larger settings.
|
|
#
|
|
# restart: --innodb_rollback_segments=6
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 6
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 5
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 3
|
|
Innodb_undo_tablespaces_active 5
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
#
|
|
# Shutdown mysqld cleanly.
|
|
# Change number of Rollback Segments from 6 to 4 while offline.
|
|
# Restart mysqld with these smaller settings.
|
|
#
|
|
ALTER UNDO TABLESPACE `undo_003` SET INACTIVE;
|
|
# restart: --innodb_rollback_segments=4
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 4
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 5
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 3
|
|
Innodb_undo_tablespaces_active 4
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo empty
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
#
|
|
# Kill and restart mysqld with one less active undo tablespace
|
|
# and less rollback segments=2.
|
|
#
|
|
ALTER UNDO TABLESPACE `undo_004` SET INACTIVE;
|
|
# Connection 1
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
8
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
8
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES (6, repeat('f',15));
|
|
INSERT INTO t2 VALUES (6, repeat('f',15));
|
|
INSERT INTO t3 VALUES (6, repeat('f',15));
|
|
# Connection default
|
|
# Kill and restart: --innodb_rollback_segments=2
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 2
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 5
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 3
|
|
Innodb_undo_tablespaces_active 3
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo empty
|
|
undo_004 Undo Undo empty
|
|
undo_005 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
8
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
8
|
|
#
|
|
# Kill and restart mysqld with more undo tablespaces=6 and more rollback segments=7.
|
|
#
|
|
# Connection 1
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES (7, repeat('g',15));
|
|
INSERT INTO t2 VALUES (7, repeat('g',15));
|
|
INSERT INTO t3 VALUES (7, repeat('g',15));
|
|
# Connection default
|
|
ALTER UNDO TABLESPACE `undo_003` SET ACTIVE;
|
|
ALTER UNDO TABLESPACE `undo_004` SET ACTIVE;
|
|
CREATE UNDO TABLESPACE `undo_006` ADD DATAFILE 'undo_006.ibu';
|
|
SHOW WARNINGS;
|
|
Level Code Message
|
|
# Kill and restart: --innodb_rollback_segments=7
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 6
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 4
|
|
Innodb_undo_tablespaces_active 6
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
undo_006 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
undo_006 UNDO LOG ./undo_006.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
undo_006.ibu
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
8
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
8
|
|
#
|
|
# Restart mysqld in read-only mode with more rollback segments=8.
|
|
#
|
|
# Connection 1
|
|
INSERT INTO t1 VALUES (8, repeat('h',15));
|
|
INSERT INTO t2 VALUES (8, repeat('h',15));
|
|
INSERT INTO t3 VALUES (8, repeat('h',15));
|
|
# Connection default
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
8 hhhhhhhhhhhhhhh
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
9
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
9
|
|
# restart: --innodb_read_only --innodb_rollback_segments=8
|
|
CREATE UNDO TABLESPACE `undo_007` ADD DATAFILE 'undo_007.ibu';
|
|
ERROR HY000: Running in read-only mode
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 6
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 4
|
|
Innodb_undo_tablespaces_active 6
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
undo_006 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
undo_006 UNDO LOG ./undo_006.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
undo_006.ibu
|
|
SET GLOBAL innodb_rollback_segments=8;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SET GLOBAL innodb_rollback_segments=3;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
8 hhhhhhhhhhhhhhh
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
9
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
9
|
|
#
|
|
# Restart mysqld in force_recovery mode with more rollback segments=8.
|
|
#
|
|
# restart: --innodb_force_recovery=1 --innodb_rollback_segments=8
|
|
CREATE UNDO TABLESPACE `undo_007` ADD DATAFILE 'undo_007.ibu';
|
|
ERROR HY000: Changes to undo tablespaces are not allowed in force_recovery mode
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 6
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 4
|
|
Innodb_undo_tablespaces_active 6
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
undo_006 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
undo_006 UNDO LOG ./undo_006.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
undo_006.ibu
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SET GLOBAL innodb_rollback_segments=8;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SET GLOBAL innodb_rollback_segments=3;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 7
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
8 hhhhhhhhhhhhhhh
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
9
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
9
|
|
#
|
|
# Use SET PERSIST to change rollback segments=11
|
|
# and make some undo logs that must be rolled back on restart.
|
|
#
|
|
# restart: --innodb_rollback_segments=8
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES (9, repeat('i',15));
|
|
INSERT INTO t2 VALUES (9, repeat('i',15));
|
|
INSERT INTO t3 VALUES (9, repeat('i',15));
|
|
SET PERSIST innodb_rollback_segments=11;
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 11
|
|
INSERT INTO t1 VALUES (10, repeat('j',15));
|
|
INSERT INTO t2 VALUES (10, repeat('j',15));
|
|
INSERT INTO t3 VALUES (10, repeat('j',15));
|
|
#
|
|
# Restart in normal mode with default undo tablespaces and rollback segments.
|
|
# The persisted settings will be set just after startup.
|
|
#
|
|
# restart
|
|
SHOW VARIABLES LIKE 'innodb_rollback_segments';
|
|
Variable_name Value
|
|
innodb_rollback_segments 11
|
|
SHOW GLOBAL STATUS LIKE '%undo%';
|
|
Variable_name Value
|
|
Innodb_undo_tablespaces_total 6
|
|
Innodb_undo_tablespaces_implicit 2
|
|
Innodb_undo_tablespaces_explicit 4
|
|
Innodb_undo_tablespaces_active 6
|
|
SELECT NAME, ROW_FORMAT, SPACE_TYPE, STATE FROM INFORMATION_SCHEMA.INNODB_TABLESPACES
|
|
WHERE name LIKE '%undo%' ORDER BY NAME;
|
|
NAME ROW_FORMAT SPACE_TYPE STATE
|
|
innodb_undo_001 Undo Undo active
|
|
innodb_undo_002 Undo Undo active
|
|
undo_003 Undo Undo active
|
|
undo_004 Undo Undo active
|
|
undo_005 Undo Undo active
|
|
undo_006 Undo Undo active
|
|
SELECT TABLESPACE_NAME, FILE_TYPE, FILE_NAME FROM INFORMATION_SCHEMA.FILES
|
|
WHERE FILE_NAME LIKE '%undo%' ORDER BY TABLESPACE_NAME;
|
|
TABLESPACE_NAME FILE_TYPE FILE_NAME
|
|
innodb_undo_001 UNDO LOG ./undo_001
|
|
innodb_undo_002 UNDO LOG ./undo_002
|
|
undo_003 UNDO LOG ./undo_003.ibu
|
|
undo_004 UNDO LOG ./undo_004.ibu
|
|
undo_005 UNDO LOG ./undo_005.ibu
|
|
undo_006 UNDO LOG ./undo_006.ibu
|
|
# Directory listing of UNDO tablespace files
|
|
undo_001
|
|
undo_002
|
|
undo_003.ibu
|
|
undo_004.ibu
|
|
undo_005.ibu
|
|
undo_006.ibu
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
8 hhhhhhhhhhhhhhh
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
9
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
9
|
|
INSERT INTO t1 VALUES (11, repeat('k',15));
|
|
INSERT INTO t2 VALUES (11, repeat('k',15));
|
|
INSERT INTO t3 VALUES (11, repeat('k',15));
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a b
|
|
1 aaaaaaaaaaaaaaa
|
|
2 bbbbbbbbbbbbbbb
|
|
3 ccccccccccccccc
|
|
4 ddddddddddddddd
|
|
5 eeeeeeeeeeeeeee
|
|
8 hhhhhhhhhhhhhhh
|
|
11 kkkkkkkkkkkkkkk
|
|
101 x1 x1 x1 x1 x1
|
|
102 x2 x2 x2 x2 x2
|
|
103 x3 x3 x3 x3 x3
|
|
SELECT COUNT(*) FROM t2;
|
|
COUNT(*)
|
|
10
|
|
SELECT COUNT(*) FROM t3;
|
|
COUNT(*)
|
|
10
|
|
#
|
|
# Cleanup
|
|
#
|
|
DROP TABLE t1;
|
|
DROP TABLE t2;
|
|
DROP TABLE t3;
|
|
DROP TABLESPACE ts1;
|
|
ALTER UNDO TABLESPACE undo_003 SET INACTIVE;
|
|
ALTER UNDO TABLESPACE undo_004 SET INACTIVE;
|
|
ALTER UNDO TABLESPACE undo_005 SET INACTIVE;
|
|
ALTER UNDO TABLESPACE undo_006 SET INACTIVE;
|
|
DROP UNDO TABLESPACE undo_003;
|
|
DROP UNDO TABLESPACE undo_004;
|
|
DROP UNDO TABLESPACE undo_005;
|
|
DROP UNDO TABLESPACE undo_006;
|
|
SET PERSIST innodb_rollback_segments=default;
|
|
SET GLOBAL innodb_fast_shutdown=0;
|
|
# restart: --innodb_rollback_segments=1
|