master上再次执行，发现DIFFS的值终于为1，表示已经检测到master-slave数据的不一致了，这个时候可以表明pt 3.0.4版本在自动设置binlog_format格式为statement模式时没有设置成功。
1 [root@172-16-3-190 we_ops_admin]# /usr/bin/pt-table-checksum --create-replicate-table --replicate=ceshi.checksums --nocheck-replication-filters --nocheck-binlog-format --recursion-method=processlist --databases=ceshi --user=checksums --password=checksums -h172.16.3.190 --socket=/opt/app/mysql_3309/tmp/mysql.sock --port=3309
2 TS ERRORS DIFFS ROWS CHUNKS SKIPPED TIME TABLE
3 01-30T11:02:15 0 1 3 1 0 0.026 ceshi.aa
4、当我们检测出数据不一致了，并将该信息存储到checksums表中了，我们就可以利用pt-table-sync修复master-slave数据不一致，这个修复的第二步骤经过验证可以master和slave进行修复命令的执行，均能达到修复的需求。
1）master上执行，--print打印出修复的sql语句。参数--sync-to-master参数在master上执行必须有，否则打印不出差异sql。
[root@172-16-3-190 we_ops_admin]# pt-table-sync --sync-to-master --replicate=ceshi.checksums -h172.16.3.190 --user=checksums --password=checksums --socket=/opt/app/mysql_3309/tmp/mysql.sock --port=3309 h=172.16.3.189,u=checksums,p=checksums --socket=/opt/app/mysql_3309/tmp/mysql.sock --port=3309 --print
DELETE FROM `ceshi`.`aa` WHERE `id`='4' LIMIT 1 /*percona-toolkit src_db:ceshi src_tbl:aa src_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.190,p=...,u=checksums dst_db:ceshi dst_tbl:aa dst_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.189,p=...,u=checksums lock:1 transaction:1 changing_src:ceshi.checksums replicate:ceshi.checksums bidirectional:0 pid:13528 user:root host:172-16-3-190*/;
REPLACE INTO `ceshi`.`aa`(`aa`, `bb`, `id`) VALUES ('1', '1', '1') /*percona-toolkit src_db:ceshi src_tbl:aa src_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.190,p=...,u=checksums dst_db:ceshi dst_tbl:aa dst_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.189,p=...,u=checksums lock:1 transaction:1 changing_src:ceshi.checksums replicate:ceshi.checksums bidirectional:0 pid:13528 user:root host:172-16-3-190*/;
REPLACE INTO `ceshi`.`aa`(`aa`, `bb`, `id`) VALUES ('5', '2', '5') /*percona-toolkit src_db:ceshi src_tbl:aa src_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.190,p=...,u=checksums dst_db:ceshi dst_tbl:aa dst_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.189,p=...,u=checksums lock:1 transaction:1 changing_src:ceshi.checksums replicate:ceshi.checksums bidirectional:0 pid:13528 user:root host:172-16-3-190*/;
我们再次再slave上构造差异并执行修复命令
---slave上执行
mysql> update aa set id = 4 where aa = 5;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
----master上执行检测
[root@172-16-3-190 we_ops_admin]# /usr/bin/pt-table-checksum --create-replicate-table --replicate=ceshi.checksums --nocheck-replication-filters --nocheck-binlog-format --recursion-method=processlist --databases=ceshi --user=checksums --password=checksums -h172.16.3.190 --socket=/opt/app/mysql_3309/tmp/mysql.sock --port=3309
# A software update is available:
TS ERRORS DIFFS ROWS CHUNKS SKIPPED TIME TABLE
01-30T15:12:27 0 1 3 1 0 0.025 ceshi.aa
----slave上执行数据修复
[root@172-16-3-189 we_ops_admin]# pt-table-sync --sync-to-master --replicate=ceshi.checksums -h172.16.3.190 --user=checksums --password=checksums --socket=/opt/app/mysql_3309/tmp/mysql.sock --port=3309 h=172.16.3.189,u=checksums,p=checksums --socket=/opt/app/mysql_3309/tmp/mysql.sock --port=3309 --print
DELETE FROM `ceshi`.`aa` WHERE `id`='4' LIMIT 1 /*percona-toolkit src_db:ceshi src_tbl:aa src_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.190,p=...,u=checksums dst_db:ceshi dst_tbl:aa dst_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.189,p=...,u=checksums lock:1 transaction:1 changing_src:ceshi.checksums replicate:ceshi.checksums bidirectional:0 pid:23321 user:root host:172-16-3-189*/;
REPLACE INTO `ceshi`.`aa`(`aa`, `bb`, `id`) VALUES ('5', '2', '5') /*percona-toolkit src_db:ceshi src_tbl:aa src_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.190,p=...,u=checksums dst_db:ceshi dst_tbl:aa dst_dsn:P=3309,S=/opt/app/mysql_3309/tmp/mysql.sock,h=172.16.3.189,p=...,u=checksums lock:1 transaction:1 changing_src:ceshi.checksums replicate:ceshi.checksums bidirectional:0 pid:23321 user:root host:172-16-3-189*/;