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a9d00db155
contains a bad and a good copy Clean up the InnoDB doublewrite buffer code. buf_dblwr_init_or_load_pages(): Do not add empty pages to the buffer. buf_dblwr_process(): Do consider changes to pages that are all zero. Do not abort when finding a corrupted copy of a page in the doublewrite buffer, because there could be multiple copies in the doublewrite buffer, and only one of them needs to be good.
125 lines
3.1 KiB
Text
125 lines
3.1 KiB
Text
CREATE TABLE t1(a CHAR(255),
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b CHAR(255),
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c CHAR(255),
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d CHAR(255),
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id INT,
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PRIMARY KEY(id)) ENGINE=InnoDB;
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create table t2 like t1;
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create procedure setcrash(IN i INT)
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begin
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CASE i
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WHEN 1 THEN SET SESSION debug_dbug="d,crash_commit_after_prepare";
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WHEN 2 THEN SET SESSION debug_dbug="d,crash_commit_after_log";
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WHEN 3 THEN SET SESSION debug_dbug="d,crash_commit_before_unlog";
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WHEN 4 THEN SET SESSION debug_dbug="d,crash_commit_after";
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WHEN 5 THEN SET SESSION debug_dbug="d,crash_commit_before";
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ELSE BEGIN END;
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END CASE;
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end //
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FLUSH TABLES;
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 9+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 8+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 7+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 6+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 5+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 4+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 3+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 2+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 1+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 0+1);
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(5);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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SHOW BINLOG EVENTS LIMIT 4,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(4);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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a b c d 1
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a b c d 2
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a b c d 3
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a b c d 4
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a b c d 5
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a b c d 6
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a b c d 7
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a b c d 8
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a b c d 9
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a b c d 10
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SHOW BINLOG EVENTS LIMIT 4,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t2
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(3);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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a b c d 1
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a b c d 2
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a b c d 3
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a b c d 4
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a b c d 5
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a b c d 6
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a b c d 7
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a b c d 8
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a b c d 9
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a b c d 10
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SHOW BINLOG EVENTS LIMIT 4,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t2
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(2);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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a b c d 1
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a b c d 2
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a b c d 3
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a b c d 4
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a b c d 5
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a b c d 6
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a b c d 7
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a b c d 8
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a b c d 9
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a b c d 10
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SHOW BINLOG EVENTS LIMIT 4,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t2
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(1);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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SHOW BINLOG EVENTS LIMIT 4,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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delete from t1;
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DROP TABLE t1;
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DROP TABLE t2;
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DROP PROCEDURE setcrash;
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