mysql無備份恢復-獨立表空間

shawnloong發表於2017-11-12
原文網址 : http://blog.itpub.net/24486203/viewspace-2147148/
MySql


建立恢復庫

點選(此處)摺疊或開啟

  1. mysql> create database helpdb default charset utf8;
  2. Query OK, 1 row affected (0.01 sec)
建立恢復表

點選(此處)摺疊或開啟

  1. mysql>
  2. CREATE TABLE `newaccount` (
  3.   `id` int(11) NOT NULL AUTO_INCREMENT,
  4.   `username` varchar(50) DEFAULT NULL,
  5.   `userpwd` varchar(50) DEFAULT NULL,
  6.   `createtime` datetime DEFAULT NULL,
  7.   PRIMARY KEY (`id`)
  8. ) ENGINE=InnoDB DEFAULT CHARSET=utf8;




建立對應函式

點選(此處)摺疊或開啟

  1. DELIMITER $$
  2. USE `helpdb`$$
  3. DROP FUNCTION IF EXISTS `rand_string`$$
  4. CREATE DEFINER=`root`@`%` FUNCTION `rand_string`(n INT) RETURNS VARCHAR(255) CHARSET latin1
  5. BEGIN
  6.     DECLARE chars_str VARCHAR(100) DEFAULT 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
  7.     DECLARE return_str VARCHAR(255) DEFAULT '';
  8.     DECLARE i INT DEFAULT 0;
  9.     WHILE i < n DO
  10.         SET return_str = CONCAT(return_str,SUBSTRING(chars_str , FLOOR(1 + RAND()*62 ),1));
  11.         SET i = i +1;
  12.     END WHILE;
  13.     RETURN return_str;
  14.     END$$
  15. DELIMITER ;
建立儲存過程

點選(此處)摺疊或開啟

  1. DELIMITER $$
  2. USE `helpdb` $$
  3. DROP PROCEDURE IF EXISTS `p_repeat` $$
  4. CREATE DEFINER = `root` @`%` PROCEDURE `p_repeat` ()
  5. BEGIN
  6.   DECLARE v INT ;
  7.   SET v = 0 ;
  8.   REPEAT
  9.     INSERT INTO newaccount
  10.     VALUES
  11.       (
  12.         NULL,
  13.         rand_string (5),
  14.         rand_string (15),
  15.         NOW()
  16.       ) ;
  17.     SET v = v + 1 ;
  18.     UNTIL v >= 1000
  19.   END REPEAT ;
  20. END $$
  21. DELIMITER ;
呼叫mysql儲存過程插入資料

點選(此處)摺疊或開啟

  1. mysql> CALL p_repeat;
  2. Query OK, 1 row affected (1.62 sec)
  3. mysql> select count(*) from newaccount;
  4. +----------+
  5. | count(*) |
  6. +----------+
  7. | 1000 |
  8. +----------+

手動插入資料

點選(此處)摺疊或開啟

  1. mysql> insert into newaccount values(null,'netdata','pwdnetdata',now());
  2. Query OK, 1 row affected (0.00 sec)
  3. mysql> select * from newaccount where id=1001;
  4. +------+----------+------------+---------------------+
  5. | id | username | userpwd | createtime |
  6. +------+----------+------------+---------------------+
  7. | 1001 | netdata | pwdnetdata | 2017-11-12 01:37:52 |
  8. +------+----------+------------+---------------------+
  9. 1 row in set (0.00 sec)


刪除表

點選(此處)摺疊或開啟

  1. mysql> drop table newaccount;
  2. Query OK, 0 rows affected (0.01 sec)

關閉庫

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# /etc/init.d/mysql stop
  2. Shutting down MySQL.. SUCCESS!
  3. [root@mysqltest-213-2 undrop-for-innodb-master]#
  4. 1 row in set (0.00 sec)
  5. [root@mysqltest-213-2 undrop-for-innodb-master]# ./stream_parser -f /var/lib/mysql/ibdata1
  6. Opening file: /var/lib/mysql/ibdata1
  7. File information:
  8. ID of device containing file: 64768
  9. inode number: 393238
  10. protection: 100660 (regular file)
  11. number of hard links: 1
  12. user ID of owner: 498
  13. group ID of owner: 500
  14. device ID (if special file): 0
  15. blocksize for filesystem I/O: 4096
  16. number of blocks allocated: 155648
  17. time of last access: 1510422066 Sun Nov 12 01:41:06 2017
  18. time of last modification: 1510422066 Sun Nov 12 01:41:06 2017
  19. time of last status change: 1510422066 Sun Nov 12 01:41:06 2017
  20. total size, in bytes: 79691776 (76.000 MiB)
  21. Size to process: 79691776 (76.000 MiB)
  22. Worker(0): 21.03% done. 2017-11-12 01:41:49 ETA(in 00:00:07). Processing speed: 7.984 MiB/sec


All workers finished in 1 sec
解析資料檔案，得到table_id=228

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# ./c_parser -4Df pages-ibdata1/FIL_PAGE_INDEX/0000000000000001.page -t dictionary/SYS_TABLES.sql |grep newaccount
  2. 00000007A50E 030000024B0D54 SYS_TABLES "helpdb/newaccount" 71 4 1 0 80 "" 57
  3. 00000007A50E 030000024B0D54 SYS_TABLES "helpdb/newaccount" 71 4 1 0 80 "" 57
  4. SET FOREIGN_KEY_CHECKS=0;
  5. LOAD DATA LOCAL INFILE '/usr/local/tools/undrop-for-innodb-master/dumps/default/SYS_TABLES' REPLACE INTO TABLE `SYS_TABLES` FIELDS TERMINATED BY '\t' OPTIONALLY ENCLOSED BY '"' LINES STARTING BY 'SYS_TABLES\t' (`NAME`, `ID`, `N_COLS`, `TYPE`, `MIX_ID`, `MIX_LEN`, `CLUSTER_NAME`, `SPACE`);
根據table_id得到index_id，index_id對應恢復資料檔案

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# ./c_parser -4Df pages-ibdata1/FIL_PAGE_INDEX/0000000000000003.page -t dictionary/SYS_INDEXES.sql |grep 71
  2. SET FOREIGN_KEY_CHECKS=0;
  3. LOAD DATA LOCAL INFILE '/usr/local/tools/undrop-for-innodb-master/dumps/default/SYS_INDEXES' REPLACE INTO TABLE `SYS_INDEXES` FIELDS TERMINATED BY '\t' OPTIONALLY ENCLOSED BY '"' LINES STARTING BY 'SYS_INDEXES\t' (`TABLE_ID`, `ID`, `NAME`, `N_FIELDS`, `TYPE`, `SPACE`, `PAGE_NO`);
  4. 00000007A50E 030000024B0BFF SYS_INDEXES 71 74 "PRIMARY" 1 3 57 4294967295
  5. 00000007A50E 030000024B0BFF SYS_INDEXES 71 74 "PRIMARY" 1 3 57 4294967295
注意這裡還要掃描邏輯卷一遍跟共享表空間恢復不一樣的地方

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# ./stream_parser -f /dev/mapper/vg_mysqltest2132-lv_root -t 18G
  2. Opening file: /dev/mapper/vg_mysqltest2132-lv_root
  3. File information:
  4. ID of device containing file: 5
  5. inode number: 6976
  6. protection: 60660 (block device)
  7. number of hard links: 1
  8. user ID of owner: 0
  9. group ID of owner: 6
  10. device ID (if special file): 64768
  11. blocksize for filesystem I/O: 4096
  12. number of blocks allocated: 0
  13. time of last access: 1510407590 Sat Nov 11 21:39:50 2017
  14. time of last modification: 1510407590 Sat Nov 11 21:39:50 2017
  15. time of last status change: 1510407590 Sat Nov 11 21:39:50 2017
  16. total size, in bytes: 0 (0.000 exp(+0))
  19. Size to process: 19327352832 (18.000 GiB)
  20. Worker(0): 1.08% done. 2017-11-12 01:46:39 ETA(in 00:03:10). Processing speed: 95.945 MiB/sec
  21. Worker(0): 2.12% done. 2017-11-12 01:48:14 ETA(in 00:04:42). Processing speed: 63.880 MiB/sec
  22. Worker(0): 3.16% done. 2017-11-12 01:54:30 ETA(in 00:10:51). Processing speed: 27.377 MiB/sec
  23. Worker(0): 4.20% done. 2017-11-12 01:46:45 ETA(in 00:03:04). Processing speed: 95.844 MiB/sec
  24. Worker(0): 5.24% done. 2017-11-12 01:46:45 ETA(in 00:03:02). Processing speed: 95.820 MiB/sec
  25. Worker(0): 6.28% done. 2017-11-12 01:48:16 ETA(in 00:04:30). Processing speed: 63.880 MiB/sec
  26. Worker(0): 7.32% done. 2017-11-12 01:48:16 ETA(in 00:04:27). Processing speed: 63.896 MiB/sec
  27. Worker(0): 8.36% done. 2017-11-12 01:46:47 ETA(in 00:02:56). Processing speed: 95.828 MiB/sec
  28. Worker(0): 9.40% done. 2017-11-12 01:46:47 ETA(in 00:02:54). Processing speed: 95.906 MiB/sec
  29. Worker(0): 10.44% done. 2017-11-12 01:46:47 ETA(in 00:02:52). Processing speed: 95.891 MiB/sec
  30. Worker(0): 11.49% done. 2017-11-12 01:45:20 ETA(in 00:01:24). Processing speed: 192.000 MiB/sec
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  83. All workers finished in 83 sec



檢視對應資料頁檔案

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# ls pages-vg_mysqltest2132-lv_root/FIL_PAGE_INDEX/0000000000000074.page
  2. pages-vg_mysqltest2132-lv_root/FIL_PAGE_INDEX/0000000000000074.page

恢復表結構

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# cat newaccount.sql
  2. CREATE TABLE `newaccount` (
  3.   `id` int(11) NOT NULL AUTO_INCREMENT,
  4.   `username` varchar(50) DEFAULT NULL,
  5.   `userpwd` varchar(50) DEFAULT NULL,
  6.   `createtime` datetime DEFAULT NULL,
  7.   PRIMARY KEY (`id`)
  8. ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
抽取資料

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# ./c_parser -6f pages-ibdata1/FIL_PAGE_INDEX/0000000000000074.page -t newaccount.sql | head -5
  2. -- Page id: 5, Format: COMPACT, Records list: Valid, Expected records: (301 301)
  3. 00000007A1B5 AC0000015F0110 newaccount 151 "0GdUH" "DTo9njhkAO9adoc" "2017-11-12 01:36:10.0"
  4. 00000007A1B6 AD000001600110 newaccount 152 "CoT8Q" "DtjZQ4Iaz9UVKOD" "2017-11-12 01:36:10.0"
  5. 00000007A1B7 AE000001610110 newaccount 153 "CZWzT" "z1f1aEyGzEnLzo7" "2017-11-12 01:36:10.0"
  6. 00000007A1B8 AF000001620110 newaccount 154 "eEpWh" "p50DYNW9J41Hkkv" "2017-11-12 01:36:10.0"



恢復資料
抽取資料轉換成檔案

點選(此處)摺疊或開啟

  1. [root@mysqltest-213-2 undrop-for-innodb-master]# ./c_parser -6f pages-vg_mysqltest2132-lv_root/FIL_PAGE_INDEX/0000000000000074.page -t newaccount.sql -o dumps/default/newaccount.dump -l dumps/default/newaccount.sql
  2. [root@mysqltest-213-2 undrop-for-innodb-master]# ls -alh dumps/default/newaccount.*
  3. -rw-r--r--. 1 root root 92K Nov 12 01:48 dumps/default/newaccount.dump
  4. -rw-r--r--. 1 root root 244 Nov 12 01:48 dumps/default/newaccount.sql
恢復資料

點選(此處)摺疊或開啟

  1. mysql> source dumps/default/newaccount.sql;
  2. Query OK, 0 rows affected (0.00 sec)
  3. Query OK, 6002 rows affected (0.06 sec)
  4. Records: 6002 Deleted: 0 Skipped: 0 Warnings: 0
  5. mysql> select count(*) from newaccount;
  6. +----------+
  7. | count(*) |
  8. +----------+
  9. | 1001 |
  10. +----------+
  11. 1 row in set (0.00 sec)
  12. mysql> checksum table newaccount;
  13. +-------------------+------------+
  14. | Table | Checksum |
  15. +-------------------+------------+
  16. | helpdb.newaccount | 2512700176 |
  17. +-------------------+------------+
  18. 1 row in set (0.03 sec)



參閱文件

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