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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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154
mysql-test/suite/encryption/r/innodb_lotoftables.result Normal file
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SET GLOBAL innodb_file_format = `Barracuda`;
SET GLOBAL innodb_file_per_table = ON;
SHOW VARIABLES LIKE 'innodb_encrypt%';
Variable_name Value
innodb_encrypt_log OFF
innodb_encrypt_tables OFF
innodb_encryption_rotate_key_age 1
innodb_encryption_rotation_iops 100
innodb_encryption_threads 0
create database innodb_encrypted_1;
use innodb_encrypted_1;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 1
set autocommit=0;
set autocommit=1;
commit work;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 1
# should be 100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
create database innodb_encrypted_2;
use innodb_encrypted_2;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
set autocommit=0;
commit work;
set autocommit=1;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
# should be 100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
# should be 100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
create database innodb_encrypted_3;
use innodb_encrypted_3;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
set autocommit=0;
commit work;
set autocommit=1;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
# should be 100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
# should be 200
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
200
use test;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
200
SET GLOBAL innodb_encrypt_tables = on;
SET GLOBAL innodb_encryption_threads=4;
# Wait until all encrypted tables have been encrypted
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
200
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
# Success!
# Restart mysqld --innodb_encrypt_tables=0 --innodb_encryption_threads=0
# Restart Success!
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
use test;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
use innodb_encrypted_1;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
use innodb_encrypted_2;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
use innodb_encrypted_3;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
use innodb_encrypted_1;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 3
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 103
use innodb_encrypted_2;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 103
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 203
use innodb_encrypted_3;
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 203
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 203
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
200
SET GLOBAL innodb_encrypt_tables = off;
SET GLOBAL innodb_encryption_threads=4;
# Wait until all default encrypted tables have been decrypted
# should be 100
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
100
# should be 200
SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND NAME LIKE 'innodb_encrypted%';
COUNT(*)
200
show status like 'innodb_pages0_read%';
Variable_name Value
Innodb_pages0_read 303
use test;
drop database innodb_encrypted_1;
drop database innodb_encrypted_2;
drop database innodb_encrypted_3;