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Before commit6112853cdain MySQL 4.1.1 introduced the parameter innodb_file_per_table, all InnoDB data was written to the InnoDB system tablespace (often named ibdata1). A serious design problem is that once the system tablespace has grown to some size, it cannot shrink even if the data inside it has been deleted. There are also other design problems, such as the server hang MDEV-29930 that should only be possible when using innodb_file_per_table=0 and innodb_undo_tablespaces=0 (storing both tables and undo logs in the InnoDB system tablespace). The parameter innodb_change_buffering was deprecated in commitb5852ffbee. Starting with commitbaf276e6d4(MDEV-19229) the number of innodb_undo_tablespaces can be increased, so that the undo logs can be moved out of the system tablespace of an existing installation. If all these things (tables, undo logs, and the change buffer) are removed from the InnoDB system tablespace, the only variable-size data structure inside it is the InnoDB data dictionary. DDL operations on .ibd files was optimized in commit86dc7b4d4c(MDEV-24626). That should have removed any thinkable performance advantage of using innodb_file_per_table=0. Since there should be no benefit of setting innodb_file_per_table=0, the parameter should be deprecated. Starting with MySQL 5.6 and MariaDB Server 10.0, the default value is innodb_file_per_table=1.
28 lines
1.4 KiB
Plaintext
28 lines
1.4 KiB
Plaintext
call mtr.add_suppression("InnoDB: Table `test`\\.`t[13]` (has an unreadable root page|is corrupted)");
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call mtr.add_suppression("InnoDB: Encrypted page \\[page id: space=\\d+, page number=[36]\\] in file .*test.t[123]\\.ibd looks corrupted; key_version=");
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call mtr.add_suppression("\\[ERROR\\] InnoDB: We detected index corruption in an InnoDB type table");
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call mtr.add_suppression("\\[ERROR\\] (mysqld|mariadbd).*: Index for table 't2' is corrupt; try to repair it");
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set global innodb_compression_algorithm = 1;
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# Create and populate tables to be corrupted
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CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY, b TEXT,c char(200)) ENGINE=InnoDB encrypted=yes;
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CREATE TABLE t2 (a INT AUTO_INCREMENT PRIMARY KEY, b TEXT,c char(200)) ENGINE=InnoDB row_format=compressed encrypted=yes;
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CREATE TABLE t3 (a INT AUTO_INCREMENT PRIMARY KEY, b TEXT, c char(200)) ENGINE=InnoDB page_compressed=yes encrypted=yes;
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BEGIN;
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INSERT INTO t1 (b,c) VALUES ('corrupt me','secret');
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INSERT INTO t1 (b,c) VALUES ('corrupt me','moresecretmoresecret');
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INSERT INTO t2 select * from t1;
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INSERT INTO t3 select * from t1;
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COMMIT;
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# Backup tables before corrupting
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# Corrupt tables
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# restart
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SELECT * FROM t1;
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ERROR 42S02: Table 'test.t1' doesn't exist in engine
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SELECT * FROM t2;
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Got one of the listed errors
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SELECT * FROM t3;
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ERROR 42S02: Table 'test.t3' doesn't exist in engine
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# Restore the original tables
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# restart
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DROP TABLE t1,t2,t3;
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