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标题：MySQL drop database恢复(恢复方法同样适用MySQL drop table,delete,truncate table)
作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]
昨天晚上接到一个网络服务请求，由于不小心点击了自己产品软件上面的清空数据功能(这个工具确实需要小心,在Oracle恢复案例中,也有xx企业erp该功能导致数据被删除请求恢复)，导致MySQL数据库被直接drop database掉了，之前没有做任何备份，只是发生故障之后，他们立即封存现场，备份出来了ibdata1文件。接到请求之后，通过让其把ibdata1文件发给过来，通过MySQL recovery工具进行分析恢复，经过6个小时的处理，基本上实现核心数据0丢失.
解析ibdata1(innodb文件)
[root@localhost recovery_MySQL]# ./stream_parser -f /tmp/ibdata1Opening file: /tmp/ibdata1File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920Opening file: /tmp/ibdata1time of last access: 1440083236 Thu Aug 20 23:07:16 2015File information:time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015ID of device containing file: 2055inode number: 97257protection: 100644 total size, in bytes: 18874368 (18.000 MiB)(regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920Size to process: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920time of last access: 1440083236 Thu Aug 20 23:07:16 2015time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015total size, in bytes: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:Size to process: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)time of last access: 1440083236 Thu Aug 20 23:07:16 2015number of hard links: 1user ID of owner: 0time of last modification: 1440062236 Thu Aug 20 17:17:16 2015group ID of owner: 0time of last status change: 1440081904 Thu Aug 20 22:45:04 2015device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920total size, in bytes: 18874368 (18.000 MiB)Size to process: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0time of last access: 1440083236 Thu Aug 20 23:07:16 2015group ID of owner: 0device ID (if special file): 0time of last modification: 1440062236 Thu Aug 20 17:17:16 2015blocksize for filesystem I/O: 4096time of last status change: 1440081904 Thu Aug 20 22:45:04 2015number of blocks allocated: 36920Opening file: /tmp/ibdata1total size, in bytes: 18874368 (18.000 MiB)File information:Size to process: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0time of last access: 1440083236 Thu Aug 20 23:07:16 2015blocksize for filesystem I/O: 4096time of last modification: 1440062236 Thu Aug 20 17:17:16 2015number of blocks allocated: 36920time of last status change: 1440081904 Thu Aug 20 22:45:04 2015Opening file: /tmp/ibdata1total size, in bytes: 18874368 (18.000 MiB)File information:Size to process: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920time of last access: 1440083236 Thu Aug 20 23:07:16 2015time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015Opening file: /tmp/ibdata1File information:total size, in bytes: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257protection: 100644 Size to process: 18874368 (18.000 MiB)(regular file)number of hard links: 1time of last access: 1440083236 Thu Aug 20 23:07:16 2015user ID of owner: 0group ID of owner: 0time of last modification: 1440062236 Thu Aug 20 17:17:16 2015Opening file: /tmp/ibdata1time of last status change: 1440081904 Thu Aug 20 22:45:04 2015device ID (if special file): 0File information:blocksize for filesystem I/O: 4096number of blocks allocated: 36920total size, in bytes: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)Size to process: 18874368 (18.000 MiB)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920time of last access: 1440083236 Thu Aug 20 23:07:16 2015Opening file: /tmp/ibdata1time of last modification: 1440062236 Thu Aug 20 17:17:16 2015File information:time of last status change: 1440081904 Thu Aug 20 22:45:04 2015ID of device containing file: 2055total size, in bytes: 18874368 (18.000 MiB)inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0Size to process: 18874368 (18.000 MiB)group ID of owner: 0time of last access: 1440083236 Thu Aug 20 23:07:16 2015device ID (if special file): 0blocksize for filesystem I/O: 4096time of last modification: 1440062236 Thu Aug 20 17:17:16 2015number of blocks allocated: 36920time of last status change: 1440081904 Thu Aug 20 22:45:04 2015total size, in bytes: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1Size to process: 18874368 (18.000 MiB)File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1time of last access: 1440083236 Thu Aug 20 23:07:16 2015user ID of owner: 0group ID of owner: 0time of last modification: 1440062236 Thu Aug 20 17:17:16 2015device ID (if special file): 0time of last status change: 1440081904 Thu Aug 20 22:45:04 2015blocksize for filesystem I/O: 4096number of blocks allocated: 36920total size, in bytes: 18874368 (18.000 MiB)Size to process: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0time of last access: 1440083236 Thu Aug 20 23:07:16 2015device ID (if special file): 0time of last modification: 1440062236 Thu Aug 20 17:17:16 2015blocksize for filesystem I/O: 4096time of last status change: 1440081904 Thu Aug 20 22:45:04 2015number of blocks allocated: 36920total size, in bytes: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:Size to process: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920time of last access: 1440083236 Thu Aug 20 23:07:16 2015time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015total size, in bytes: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:Size to process: 18874368 (18.000 MiB)ID of device containing file: 2055inode number: 97257time of last access: 1440083236 Thu Aug 20 23:07:16 2015protection: 100644 (regular file)time of last modification: 1440062236 Thu Aug 20 17:17:16 2015number of hard links: 1time of last status change: 1440081904 Thu Aug 20 22:45:04 2015user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096total size, in bytes: 18874368 (18.000 MiB)number of blocks allocated: 36920Size to process: 18874368 (18.000 MiB)time of last access: 1440083236 Thu Aug 20 23:07:16 2015time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015total size, in bytes: 18874368 (18.000 MiB)Size to process: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920time of last access: 1440083236 Thu Aug 20 23:07:16 2015time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015total size, in bytes: 18874368 (18.000 MiB)Size to process: 18874368 (18.000 MiB)Opening file: /tmp/ibdata1File information:ID of device containing file: 2055inode number: 97257protection: 100644 (regular file)number of hard links: 1user ID of owner: 0group ID of owner: 0device ID (if special file): 0blocksize for filesystem I/O: 4096number of blocks allocated: 36920time of last access: 1440083236 Thu Aug 20 23:07:16 2015time of last modification: 1440062236 Thu Aug 20 17:17:16 2015time of last status change: 1440081904 Thu Aug 20 22:45:04 2015total size, in bytes: 18874368 (18.000 MiB)Size to process: 18874368 (18.000 MiB)All workers finished in 0 sec[root@localhost recovery_MySQL]# cd pages-ibdata1[root@localhost pages-ibdata1]# ls -ltotal 16drwxr-xr-x 2 root root 4096 Aug 20 22:53 FIL_PAGE_INDEXdrwxr-xr-x 2 root root 4096 Aug 20 22:53 FIL_PAGE_TYPE_BLOB[root@localhost pages-ibdata1]# cd FIL_PAGE_INDEX[root@localhost FIL_PAGE_INDEX]# ls -ltotal 9924-rw-r--r-- 1 root root 32768 Aug 20 22:53 0000000000000001.page-rw-r--r-- 1 root root 278528 Aug 20 22:53 0000000000000002.page-rw-r--r-- 1 root root 32768 Aug 20 22:53 0000000000000003.page-rw-r--r-- 1 root root 32768 Aug 20 22:53 0000000000000004.page-rw-r--r-- 1 root root 32768 Aug 20 22:53 0000000000000005.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000011.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000012.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000013.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000014.page-rw-r--r-- 1 root root 2883584 Aug 20 22:53 0000000000000065.page-rw-r--r-- 1 root root 475136 Aug 20 22:53 0000000000000066.page-rw-r--r-- 1 root root 737280 Aug 20 22:53 0000000000000067.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000068.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000069.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000070.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000071.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000072.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000073.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000074.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000075.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000076.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 0000000000000077.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000078.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000079.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000080.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000081.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000082.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000083.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000084.page-rw-r--r-- 1 root root 753664 Aug 20 22:53 0000000000000085.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000086.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000087.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000088.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000089.page-rw-r--r-- 1 root root 901120 Aug 20 22:53 0000000000000110.page-rw-r--r-- 1 root root 2097152 Aug 20 22:53 0000000000000115.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000116.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000117.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000118.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000119.page-rw-r--r-- 1 root root 49152 Aug 20 22:53 0000000000000120.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000121.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000122.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000123.page-rw-r--r-- 1 root root 98304 Aug 20 22:53 0000000000000124.page-rw-r--r-- 1 root root 16384 Aug 20 22:53 18446744069414584320.page[root@localhost FIL_PAGE_INDEX]# |
分析数据字典
[root@localhost recovery_MySQL]# ./recover_dictionary.shGenerating dictionary tables dumps... OKCreating test database ... Warning: Using a password on the command line interface can be insecure.OKCreating dictionary tables in database test:SYS_TABLES ... Warning: Using a password on the command line interface can be insecure.OKSYS_COLUMNS ... Warning: Using a password on the command line interface can be insecure.OKSYS_INDEXES ... Warning: Using a password on the command line interface can be insecure.OKSYS_FIELDS ... Warning: Using a password on the command line interface can be insecure.OKAll OKLoading dictionary tables data:SYS_TABLES ... Warning: Using a password on the command line interface can be insecure.34 recs OKSYS_COLUMNS ... Warning: Using a password on the command line interface can be insecure.3061 recs OKSYS_INDEXES ... Warning: Using a password on the command line interface can be insecure.206 recs OKSYS_FIELDS ... Warning: Using a password on the command line interface can be insecure.206 recs OKAll OK |
关于MySQL数据字典恢复,也可以参考另外一篇文章:使用工具直接抽取MySQL数据字典
查看数据库中记录情况
[root@localhost recovery_MySQL]# MySQL -uroot -p123456Warning: Using a password on the command line interface can be insecure.Welcome to the MySQL monitor. Commands end with ; or g.Your MySQL connection id is 34954Server version: 5.6.21 MySQL Community Server (GPL)Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.MySQL> use test;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedMySQL> show tables;+----------------+| Tables_in_test |+----------------+| SYS_COLUMNS || SYS_FIELDS || SYS_INDEXES || SYS_TABLES |+----------------+4 rows in set (0.00 sec)MySQL> SELECT NAME,ID from SYS_TABLES;+-------------------------+----+| NAME | ID |+-------------------------+----+| cnywmcom/zx_account_log | 31 || cnywmcom/zx_area_code | 32 || cnywmcom/zx_goods_group | 33 || cnywmcom/zx_manage_type | 34 || cnywmcom/zx_order_goods | 35 || cnywmcom/zx_order_info | 36 || cnywmcom/zx_param | 37 || cnywmcom/zx_users | 46 || cnywmcom/zx_user_type | 38 || SYS_FOREIGN | 11 || SYS_FOREIGN_COLS | 12 |+-------------------------+----+11 rows in set (0.00 sec)MySQL> select * from SYS_INDEXES;+----------+-----+-----------------+----------+------+-------+---------+| TABLE_ID | ID | NAME | N_FIELDS | TYPE | SPACE | PAGE_NO |+----------+-----+-----------------+----------+------+-------+---------+| 11 | 11 | ID_IND | 1 | 3 | 0 | 46 || 11 | 12 | FOR_IND | 1 | 0 | 0 | 47 || 11 | 13 | REF_IND | 1 | 0 | 0 | 48 || 12 | 14 | ID_IND | 2 | 3 | 0 | 49 || 31 | 65 | PRIMARY | 1 | 3 | 0 | 50 || 31 | 66 | user_id | 1 | 0 | 0 | 216 || 32 | 67 | PRIMARY | 1 | 3 | 0 | 52 || 33 | 68 | PRIMARY | 1 | 3 | 0 | 205 || 34 | 69 | PRIMARY | 1 | 3 | 0 | 54 || 35 | 70 | PRIMARY | 1 | 3 | 0 | 55 || 35 | 71 | order_id | 1 | 0 | 0 | 56 || 35 | 72 | goods_id | 1 | 0 | 0 | 57 || 36 | 73 | PRIMARY | 1 | 3 | 0 | 59 || 36 | 74 | order_sn | 1 | 2 | 0 | 60 || 36 | 75 | user_id | 1 | 0 | 0 | 61 || 36 | 76 | order_status | 1 | 0 | 0 | 62 || 36 | 77 | shipping_status | 1 | 0 | 0 | 63 || 36 | 78 | pay_status | 1 | 0 | 0 | 192 || 36 | 79 | shipping_id | 1 | 0 | 0 | 193 || 36 | 80 | pay_id | 1 | 0 | 0 | 194 || 36 | 81 | extension_code | 2 | 0 | 0 | 195 || 36 | 82 | agency_id | 1 | 0 | 0 | 203 || 37 | 83 | PRIMARY | 1 | 3 | 0 | 196 || 38 | 84 | PRIMARY | 1 | 3 | 0 | 206 || 46 | 120 | PRIMARY | 1 | 3 | 0 | 58 || 46 | 121 | user_name | 1 | 2 | 0 | 256 || 46 | 122 | email | 1 | 0 | 0 | 257 || 46 | 123 | parent_id | 1 | 0 | 0 | 258 || 46 | 124 | flag | 1 | 0 | 0 | 259 |+----------+-----+-----------------+----------+------+-------+---------+29 rows in set (0.00 sec) |
通过这里，我们就可以明确的知道，我们需要恢复的表的page是多少了，这里举例说明恢复表cnywmcom.zx_account_log,我们需要去分析65号page
分析表恢复
[root@localhost recovery_MySQL]# ./c_parser -5f pages-ibdata1/FIL_PAGE_INDEX/0000000000000065.page -t dictionary/zx_account_log.sql|more-- Page id: 223, Format: COMPACT, Records list: Invalid, Expected records: (0 7)0B0C2000101C 55000230000000 zx_account_log 2979181 270888 "0"0"0.00" "0.00" "0.00" 2147483649 "" 0 "" "0.00" "-10643256.27" "06." "06." "07827251.51" "0.5" "0.5" "0.5" "0.5"000000042228 00000001040135 zx_account_log 561 1 "0.00" "0.00" "0.00" "1.00" "0.00" 1436840718 "会员注册" 99 "13818289939" "1.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00"000000042228 0000000104015A zx_account_log 562 136 "0.00" "0.00" "0.00" "1.00" "0.00" 1436841067 "会员注册" 99 "17828025855" "1.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00"000000042228 0000000104017F zx_account_log 563 137 "0.00" "0.00" "0.00" "1.00" "0.00" 1436842239 "会员注册" 99 "18617157667" "1.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00"000000042228 000000010401A4 zx_account_log 564 139 "0.00" "0.00" "0.00" "1.00" "0.00" 1436846738 "会员注册" 99 "18113070688" "1.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00"000000042228 000000010401C9 zx_account_log 565 1 "0.00" "0.00" "0.00" "1.00" "0.00" 1436848523 "会员注册" 99 "13623646573" "1.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" "0.00" |
至此该表的数据已经恢复出来,剩下任务就是把数据保存为文件,并且导入到新库中.然后依次处理相关表.至此完成这次drop database的恢复.在恢复过程中,遇到不少坑,比如有些记录在对应的page中无法找到,需要进行额外处理.对于乱码问题需要进一步处理等.通过一系列的恢复,给客户恢复了所有核心表,实现核心数据0丢失.通过这次的恢复,已经证明我们不光是Oracle恢复中的行业强者,在MySQL数据库的各种故障中,我们也有立足之地.如果有MySQL数据库的恢复(误删除数据/delete,误删除表/drop table,误截断表/truncate table,误删除数据库/drop database,MySQL不能启动,ibdata1文件损坏/丢失等MySQL各种恢复)请求,如果您遇到MySQL恢复问题无法自行解决,请联系我们提供专业服务,最大程度减小您的损失：
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