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InnoDB always keeps all tablespaces in the fil_system cache. The fil_system.LRU is only for closing file handles; the fil_space_t and fil_node_t for all data files will remain in main memory. Between startup to shutdown, they can only be created and removed by DDL statements. Therefore, we can let dict_table_t::space point directly to the fil_space_t. dict_table_t::space_id: A numeric tablespace ID for the corner cases where we do not have a tablespace. The most prominent examples are ALTER TABLE...DISCARD TABLESPACE or a missing or corrupted file. There are a few functional differences; most notably: (1) DROP TABLE will delete matching .ibd and .cfg files, even if they were not attached to the data dictionary. (2) Some error messages will report file names instead of numeric IDs. There still are many functions that use numeric tablespace IDs instead of fil_space_t*, and many functions could be converted to fil_space_t member functions. Also, Tablespace and Datafile should be merged with fil_space_t and fil_node_t. page_id_t and buf_page_get_gen() could use fil_space_t& instead of a numeric ID, and after moving to a single buffer pool (MDEV-15058), buf_pool_t::page_hash could be moved to fil_space_t::page_hash. FilSpace: Remove. Only few calls to fil_space_acquire() will remain, and gradually they should be removed. mtr_t::set_named_space_id(ulint): Renamed from set_named_space(), to prevent accidental calls to this slower function. Very few callers remain. fseg_create(), fsp_reserve_free_extents(): Take fil_space_t* as a parameter instead of a space_id. fil_space_t::rename(): Wrapper for fil_rename_tablespace_check(), fil_name_write_rename(), fil_rename_tablespace(). Mariabackup passes the parameter log=false; InnoDB passes log=true. dict_mem_table_create(): Take fil_space_t* instead of space_id as parameter. dict_process_sys_tables_rec_and_mtr_commit(): Replace the parameter 'status' with 'bool cached'. dict_get_and_save_data_dir_path(): Avoid copying the fil_node_t::name. fil_ibd_open(): Return the tablespace. fil_space_t::set_imported(): Replaces fil_space_set_imported(). truncate_t: Change many member function parameters to fil_space_t*, and remove page_size parameters. row_truncate_prepare(): Merge to its only caller. row_drop_table_from_cache(): Assert that the table is persistent. dict_create_sys_indexes_tuple(): Write SYS_INDEXES.SPACE=FIL_NULL if the tablespace has been discarded. row_import_update_discarded_flag(): Remove a constant parameter.
103 lines
4.6 KiB
Plaintext
103 lines
4.6 KiB
Plaintext
SET GLOBAL innodb_file_per_table=ON;
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FLUSH TABLES;
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CREATE TABLE t1(a INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE t3(a INT PRIMARY KEY) ENGINE=InnoDB;
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BEGIN;
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INSERT INTO t3 VALUES (33101),(347);
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INSERT INTO t1 VALUES (42),(9),(101);
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RENAME TABLE t1 TO t2;
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UPDATE t2 SET a=347 where a=42;
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COMMIT;
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# Kill the server
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# Fault 0 (no real fault): Orphan file with duplicate space_id.
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# Fault 1: Two dirty files with the same space_id.
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /InnoDB: Ignoring data file '.*t2.ibd' with space ID \d+. Another data file called .*t1.ibd exists with the same space ID/ in mysqld.1.err
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# Fault 2: Wrong space_id in a dirty file, and a missing file.
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /InnoDB: Ignoring data file '.*t1.ibd' with space ID/ in mysqld.1.err
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FOUND 1 /InnoDB: Tablespace \d+ was not found at.*t3.ibd/ in mysqld.1.err
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# Fault 3: Wrong space_id in a dirty file, and no missing file.
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /InnoDB: Ignoring data file '.*t[23].ibd' with space ID/ in mysqld.1.err
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FOUND 1 /InnoDB: Tablespace \d+ was not found at .*t1.ibd/ in mysqld.1.err
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FOUND 1 /InnoDB: Tablespace \d+ was not found at .*t3.ibd/ in mysqld.1.err
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FOUND 2 /InnoDB: Set innodb_force_recovery=1 to ignore this and to permanently lose all changes to the tablespace/ in mysqld.1.err
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# Fault 4: Missing data file
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /InnoDB: Tablespace \d+ was not found at .*t[12].ibd.
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.*InnoDB: Set innodb_force_recovery=1 to ignore this and to permanently lose all changes to the tablespace/ in mysqld.1.err
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# Fault 5: Wrong type of data file
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /\[ERROR\] InnoDB: Cannot read first page of .*t2.ibd/ in mysqld.1.err
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FOUND 1 /\[ERROR\] InnoDB: Datafile .*t2.*\. Cannot determine the space ID from the first 64 pages/ in mysqld.1.err
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SELECT * FROM t2;
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a
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9
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101
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347
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SELECT * FROM t3;
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a
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347
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33101
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SHOW TABLES;
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Tables_in_test
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t2
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t3
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DROP TABLE t2,t3;
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CREATE TABLE t0(a INT PRIMARY KEY) ENGINE=InnoDB;
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ERROR HY000: Tablespace for table '`test`.`t0`' exists. Please DISCARD the tablespace before IMPORT
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CREATE TABLE t0(a INT PRIMARY KEY) ENGINE=InnoDB;
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DROP TABLE t0;
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CREATE TABLE u1(a INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE u2(a INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE u3(a INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE u4(a INT PRIMARY KEY) ENGINE=InnoDB;
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INSERT INTO u4 VALUES(1);
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RENAME TABLE u4 TO u5;
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RENAME TABLE u5 TO u6;
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INSERT INTO u6 VALUES(2);
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# Kill the server
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# Fault 6: All-zero data file and innodb_force_recovery
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /\[ERROR\] InnoDB: Header page consists of zero bytes in datafile: .*u1.ibd/ in mysqld.1.err
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FOUND 1 /\[ERROR\] InnoDB: Datafile .*u1.*\. Cannot determine the space ID from the first 64 pages/ in mysqld.1.err
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FOUND 1 /\[ERROR\] InnoDB: Cannot read first page of .*u2.ibd/ in mysqld.1.err
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# Fault 7: Missing or wrong data file and innodb_force_recovery
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SELECT * FROM INFORMATION_SCHEMA.ENGINES
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WHERE engine = 'innodb'
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AND support IN ('YES', 'DEFAULT', 'ENABLED');
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ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
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FOUND 1 /\[ERROR\] InnoDB: Header page consists of zero bytes in datafile: .*u1.ibd/ in mysqld.1.err
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FOUND 1 /InnoDB: At LSN: \d+: unable to open file .*u[1-5].ibd for tablespace/ in mysqld.1.err
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FOUND 1 /\[ERROR\] InnoDB: Cannot rename '.*u5.ibd' to '.*u6.ibd' because the target file exists/ in mysqld.1.err
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FOUND 1 /\[ERROR\] InnoDB: Header page consists of zero bytes in datafile: .*u1.ibd/ in mysqld.1.err
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FOUND 1 /InnoDB: At LSN: \d+: unable to open file .*u[1-5].ibd for tablespace/ in mysqld.1.err
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FOUND 1 /\[Warning\] InnoDB: Tablespace \d+ was not found at .*u[1-5].ibd, and innodb_force_recovery was set. All redo log for this tablespace will be ignored!/ in mysqld.1.err
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DROP TABLE u1,u2,u3,u6;
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# List of files:
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SHOW TABLES;
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Tables_in_test
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