【MySQL】使用mysqlbinlog回滚
参考：http://wubx.net/?s=mysqlbinlog
mysql官方的mysqlbinlog没有回滚的功能，淘宝大牛对官方代码进行了修改使之能够将binlog中的DML操作变成互逆的语句，比如delete变为insert，update的set和where的互换。不过注意前提是binlog的格式必须是binlog_format=ROW
另外注意导入回滚数据较多时，需要调整超时时间和最大package的大小：
binlog_format=ROW
max_allowed_packet=1024M
#max_allow_packet大小不够时报错如下：
ERROR 1153 (08S01) at line 403133: Got a packet bigger than ‘max_allowed_packet’ bytes
重构代码
http://mysql.taobao.org/index.php/Patch_source_code#Add_flashback_feature_for_mysqlbinlog
有三个版本，测试percona5518版本可以使用5.5.18_flashback_all.diff，mysql官方版本只能使用5.5.18_flashback.diff。
http://mysql.taobao.org/images/5/53/5.5.18_flashback_all.diff
http://mysql.taobao.org/images/0/0f/5.5.18_flashback.diff
percona5.5.18版本的下载链接：
mysql5.5.18
http://cdn.mysql.com/archives/mysql-5.5/mysql-5.5.18.tar.gz
cd mysql-5.5.18/ wget http://mysql.taobao.org/images/0/0f/5.5.18_flashback.diff patch -p0 < 5.5.18_flashback.diff
## 编译成功无报错即可，无特殊编译参数要求
编译完成后，开始测试：
[root@server1 /]# /percona5518/bin/mysqlbinlog --help
在说明中多了
-B, --flashback Flashback data to start_postition or start_datetime.
然后可以用一个binlog文件做测试
mysql> select count(1) from t1; +----------+ | count(1) | +----------+ | 16 | +----------+ 1 row in set (0.00 sec) mysql> select * from t1 where id<5; +----+------+------+ | id | a | b | +----+------+------+ | 1 | aaaa | bbbb | | 2 | aaaa | bbbb | | 3 | aaaa | bbbb | | 4 | aaaa | bbbb | +----+------+------+ 4 rows in set (0.00 sec) mysql> flush logs; Query OK, 0 rows affected (0.11 sec) mysql> show master status \G *************************** 1. row *************************** File: mysql-bin.000010 Position: 108 Binlog_Do_DB: Binlog_Ignore_DB: 1 row in set (0.00 sec) mysql> update t1 set a='XXXX',b='SSSS' where id<5; Query OK, 4 rows affected (0.04 sec) Rows matched: 4 Changed: 4 Warnings: 0 mysql> flush logs; Query OK, 0 rows affected (0.09 sec)
打印出binlog
[root@server1 bin]# ./mysqlbinlog -uroot -p ../data/mysql-bin.000010 -v -v --base64-output=decode-rows Enter password: /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 4 #141204 10:51:29 server id 5598 end_log_pos 108 Start: binlog v 4, server v 5.5.18-log created 141204 10:51:29 # at 108 #141204 10:52:32 server id 5598 end_log_pos 176 Query thread_id=13 exec_time=0 error_code=0 SET TIMESTAMP=1417661552/*!*/; SET @@session.pseudo_thread_id=13/*!*/; SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/; SET @@session.sql_mode=0/*!*/; SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/; /*!\C utf8 *//*!*/; SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/; SET @@session.lc_time_names=0/*!*/; SET @@session.collation_database=DEFAULT/*!*/; BEGIN /*!*/; # at 176 # at 223 #141204 10:52:32 server id 5598 end_log_pos 223 Table_map: `test`.`t1` mapped to number 46 #141204 10:52:32 server id 5598 end_log_pos 373 Update_rows: table id 46 flags: STMT_END_F ### UPDATE test.t1 ### WHERE ### @1=1 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=1 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### UPDATE test.t1 ### WHERE ### @1=2 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=2 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### UPDATE test.t1 ### WHERE ### @1=3 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=3 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### UPDATE test.t1 ### WHERE ### @1=4 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=4 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ # at 373 #141204 10:52:32 server id 5598 end_log_pos 400 Xid = 218 COMMIT/*!*/; # at 400 #141204 10:52:37 server id 5598 end_log_pos 443 Rotate to mysql-bin.000011 pos: 4 DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
打印出回滚的binlog
[root@server1 bin]# ./mysqlbinlog -uroot -p ../data/mysql-bin.000010 -v -v --base64-output=decode-rows -B Enter password: /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; #141204 10:51:29 server id 5598 end_log_pos 108 Start: binlog v 4, server v 5.5.18-log created 141204 10:51:29 #141204 10:52:37 server id 5598 end_log_pos 443 Rotate to mysql-bin.000011 pos: 4 #141204 10:52:32 server id 5598 end_log_pos 400 Xid = 218 COMMIT/*!*/; #141204 10:52:32 server id 5598 end_log_pos 223 Table_map: `test`.`t1` mapped to number 46 #141204 10:52:32 server id 5598 end_log_pos 373 Update_rows: table id 46 flags: STMT_END_F ### UPDATE test.t1 ### WHERE ### @1=1 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=1 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### UPDATE test.t1 ### WHERE ### @1=2 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=2 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### UPDATE test.t1 ### WHERE ### @1=3 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=3 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### UPDATE test.t1 ### WHERE ### @1=4 /* INT meta=0 nullable=0 is_null=0 */ ### @2='XXXX' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='SSSS' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### SET ### @1=4 /* INT meta=0 nullable=0 is_null=0 */ ### @2='aaaa' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ ### @3='bbbb' /* VARSTRING(15) meta=15 nullable=1 is_null=0 */ DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
delete语句的回滚是把delete换成了insert
在导入的时候遇到了问题，导入一直不成功。
[root@server1 bin]# ./mysqlbinlog ../data/mysql-bin.000010 -v -v --base64-output=decode-rows -B | ./mysql -uroot -p -S ../tmp/mysql.sock test
没有效果！
后来发现是参数的问题，再试成功了，如果使用mysql官方版本好像除了-B 参数不用带其他参数，如果测试有问题可以增减参数试试。
[root@server1 bin]# ./mysqlbinlog ../data/mysql-bin.000010 -v-v -B | ./mysql -uroot -p -S ../tmp/mysql.sock test
另外注意几个比较实用的参数
--start-datetime=name Start reading the binlog at first event having a datetime equal or posterior to the argument; the argument must be a date and time in the local time zone, in any format accepted by the MySQL server for DATETIME and TIMESTAMP types, for example: 2004-12-25 11:25:56 (you should probably use quotes for your shell to set it properly). -j, --start-position=# Start reading the binlog at position N. Applies to the first binlog passed on the command line. --stop-datetime=name Stop reading the binlog at first event having a datetime equal or posterior to the argument; the argument must be a date and time in the local time zone, in any format accepted by the MySQL server for DATETIME and TIMESTAMP types, for example: 2004-12-25 11:25:56 (you should probably use quotes for your shell to set it properly). --stop-position=# Stop reading the binlog at position N. Applies to the last binlog passed on the command line. -d, --database=name List entries for just this database (local log only). -f, --force-read Force reading unknown binlog events.
恢复一个事务，找到开始和结束的pos位置
[root@server1 bin]# ./mysqlbinlog -v -v ../mysql-bin.000012 --start-position=1680 --stop-position=1971 -B | ./mysql -uroot -p -S ../tmp/mysql.sock test
如何能回滚一个binlog中一个表的数据而不影响其他表？如果是一个事务可以使用“--start-position=”和“--stop-position=”，如果不是一个连续的事务呢？
参考：http://hcymysql.blog.51cto.com/5223301/1553080
不过我在5.5的版本中测试不能给库级和表级授权super