71 lines
2.1 KiB
Plaintext
71 lines
2.1 KiB
Plaintext
--echo #
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--echo # Bug #20445525 ADD A CONSISTENCY CHECK AGAINST DB_TRX_ID BEING
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--echo # IN THE FUTURE
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--echo #
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--source include/have_nodebug.inc
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let PAGE_SIZE=`select @@innodb_page_size`;
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CREATE TABLE t1(a INT) row_format=redundant engine=innoDB;
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INSERT INTO t1 VALUES(1);
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let MYSQLD_DATADIR=`select @@datadir`;
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--source include/shutdown_mysqld.inc
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perl;
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$page_size=$ENV{PAGE_SIZE};
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my $file = "$ENV{MYSQLD_DATADIR}/test/t1.ibd";
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open(FILE, "+<", $file) || die "Unable to open $file";
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#Seek the the infimum record and get the offset to next record
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#Infimum record exist at offset 101 for redundant format
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#And offset to the next record is present 2 bytes prior to
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#infimum record
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seek(FILE, 4*$page_size+101-2, 0) || die "Unable to seek $file";
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die unless read(FILE, $_, 2) == 2;
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my $record_offset = unpack("n*", $_);
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#In this case the first record should be at offset 135
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# die unless $record_offset == 135;
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# Lizard fix: In redundant format, the offsets of all fields are recorded
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# in the offset array, and every field takes up one byte of space. We add
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# two fields so the $record_offset should be 137.
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die unless $record_offset == 137;
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my $trx_id_of_rec = 4*$page_size + $record_offset + 6;
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# Modify DB_TRX_ID of the record to a value which is greater than
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# max_trx_id
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seek(FILE, $trx_id_of_rec , 0) || die "Unable to seek $file";
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my $corrupted_trx_id = "\xff" x 6;
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syswrite(FILE, $corrupted_trx_id) || die "Unable to write";
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#Modify the checksums of the page
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seek(FILE, 4*$page_size, 0) || die "Unable to seek $file";
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syswrite(FILE, pack("H*","deadbeef",4)) || die "Unable to write";
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seek(FILE, 5*$page_size-8, 0) || die "Unable to seek $file";
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syswrite(FILE, pack("H*","deadbeef",4)) || die "Unable to write";
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close(FILE)
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EOF
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--source include/start_mysqld.inc
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--disable_query_log
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call mtr.add_suppression("\\[Warning\\] .*MY-\\d+.* A transaction id in a record of table `\.\.*`\.`\.\.*` is newer than the system-wide maximum.");
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--enable_query_log
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# Lizard: In the past, trx_id was used to check visibility, so it shows
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# nothing in the following SQL. For now, scn is used, so we can still see
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# the record.
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SELECT * FROM t1;
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DROP TABLE t1;
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