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MDEV-9931: InnoDB reads first page of every .ibd file at startup

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Analysis: By design InnoDB was reading first page of every .ibd file
at startup to find out is tablespace encrypted or not. This is
because tablespace could have been encrypted always, not
encrypted newer or encrypted based on configuration and this
information can be find realible only from first page of .ibd file.

Fix: Do not read first page of every .ibd file at startup. Instead
whenever tablespace is first time accedded we will read the first
page to find necessary information about tablespace encryption
status.

TODO: Add support for SYS_TABLEOPTIONS where all table options
encryption information included will be stored.
This commit is contained in:
Jan Lindström
2016-09-22 16:32:26 +03:00
parent e387bfafbb
commit 2bedc3978b
40 changed files with 1171 additions and 130 deletions
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7
mysql-test/suite/encryption/r/innodb-bad-key-change.result
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@ -36,10 +36,13 @@ SELECT * FROM t1;
ERROR HY000: Got error 192 'Table encrypted but decryption failed. This could be because correct encryption management plugin is not loaded, used encryption key is not available or encryption method does not match.' from InnoDB
SHOW WARNINGS;
Level Code Message
Warning 1812 Tablespace is missing for table 'test/t1'
Warning 192 Table test/t1 is encrypted but encryption service or used key_id 2 is not available. Can't continue reading table.
Warning 192 Table test/t1 in tablespace 6 is encrypted but encryption service or used key_id is not available. Can't continue reading table.
Warning 192 Table test/t1 is encrypted but encryption service or used key_id is not available. Can't continue reading table.
Error 1296 Got error 192 'Table encrypted but decryption failed. This could be because correct encryption management plugin is not loaded, used encryption key is not available or encryption method does not match.' from InnoDB
DROP TABLE t1;
Warnings:
Warning 192 Table in tablespace 6 encrypted.However key management plugin or used key_id 1 is not found or used encryption algorithm or method does not match. Can't continue opening the table.
Warning 192 Table in tablespace 6 encrypted.However key management plugin or used key_id 1 is not found or used encryption algorithm or method does not match. Can't continue opening the table.
# Start server with keys.txt
CREATE TABLE t2 (c VARCHAR(8), id int not null primary key, b int, key(b)) ENGINE=InnoDB ENCRYPTED=YES;
INSERT INTO t2 VALUES ('foobar',1,2);