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- Innochecksum misinterprets the freed pages as active one. This leads the user to think there are too many valid pages exist. - To avoid this confusion, innochecksum introduced one more option --skip-freed-pages and -r to avoid the freed pages while dumping or printing the summary of the tablespace. - Innochecksum can safely assume the page is freed if the respective extent doesn't belong to a segment and marked as freed in XDES_BITMAP in extent descriptor page. - Innochecksum shouldn't assume that zero-filled page as extent descriptor page. Reviewed-by: Marko Mäkelä
27 lines
1.1 KiB
Text
27 lines
1.1 KiB
Text
--source include/have_innodb.inc
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--source include/not_embedded.inc
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let MYSQLD_DATADIR= `SELECT @@datadir`;
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SET GLOBAL INNODB_FILE_PER_TABLE= 0;
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CREATE TABLE t1(f1 INT NOT NULL)ENGINE=InnoDB;
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INSERT INTO t1 VALUES(1);
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DROP TABLE t1;
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SET GLOBAL innodb_fast_shutdown=0;
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--source include/shutdown_mysqld.inc
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--echo # Run the innochecksum to display undo log pages
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let $resultlog=$MYSQLTEST_VARDIR/tmp/result.log;
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let SEARCH_FILE = $MYSQLTEST_VARDIR/tmp/result.log;
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let SEARCH_ABORT = NOT FOUND;
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exec $INNOCHECKSUM -S $MYSQLD_DATADIR/ibdata1 > $resultlog;
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# Expected > 0 cached undo log pages, but can't guarantee it because
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# the writes of freed pages may be optimized while flushing
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let SEARCH_PATTERN= Undo page state: 0 active, [0-9]+ cached, [0-9]+ to_purge, [0-9]+ prepared, [0-9]+ other;
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--source include/search_pattern_in_file.inc
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--echo # Run the innochecksum with --skip-freed-pages
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exec $INNOCHECKSUM -S -r $MYSQLD_DATADIR/ibdata1 > $resultlog;
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let SEARCH_PATTERN= Undo page state: 0 active, 0 cached, 0 to_purge, 0 prepared, 0 other;
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--source include/search_pattern_in_file.inc
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--remove_file $resultlog
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--source include/start_mysqld.inc
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