mysqlbackup 还原特定的表
mysqlbackup使用TTS恢复指定表.
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4.恢复特定表
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--4.1新建測试环境
CREATE DATABASE `wind` DEFAULT CHARACTER SET gbk ;
use wind;
create table t1
(
sid int not null ,
sname varchar(100) not null
)engine=innodb charset=gbk ;
DELIMITER //
create PROCEDURE proc1()
BEGIN
DECLARE i int DEFAULT 0;
set i=1 ;
set autocommit=0;
WHILE i<=1000000 DO
INSERT INTO t1 values(i,'mysql測试');
set i=i+1;
END WHILE;
commit;
set autocommit=1;
END
//
DELIMITER ;
call proc1;
create table t2
as
select * from t1;
--4.2.全备
# rm -rf /backup && mkdir /backup
#mysqlbackup --defaults-file=/usr/local/mysql/my.cnf \
--host=127.0.0.1 --port=3306 --protocol=tcp \
--user=root --password=123 --use-tts --include-tables='wind.t2' \
--with-timestamp --backup-dir=/backup \
--log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
backup-and-apply-log
# cat /backup/2015-04-02_12-41-45/meta/backup_variables.txt | grep 'end'
end_lsn=138866623
--4.3 增量备份
mysql> select count(*) from t1;
+----------+
| count(*) |
+----------+
| 1000000 |
+----------+
1 row in set (0.75 sec)
mysql> select count(*) from t2;
+----------+
| count(*) |
+----------+
| 1000000 |
+----------+
1 row in set (0.68 sec)
mysql> delete from t2 limit 10;
Query OK, 10 rows affected (0.00 sec)
mysql> commit;
Query OK, 0 rows affected (0.00 sec)
mysql> select count(*) from t2;
+----------+
| count(*) |
+----------+
| 999990 |
+----------+
1 row in set (0.80 sec)
# rm -rf /backupinc && mkdir /backupinc
--第一次增量备份
#mysqlbackup --defaults-file=/usr/local/mysql/my.cnf \
--host=127.0.0.1 --port=3306 --protocol=tcp \
--user=root --password=123 --use-tts --include-tables='wind.t2' \
--with-timestamp --log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
--incremental --start-lsn=138866623 \
--incremental-backup-dir=/backupinc backup
# cat /backupinc/2015-04-02_12-44-02/meta/backup_variables.txt | grep 'end'
end_lsn=138868639
--第二次增量备份
mysql> select count(*) from wind.t2;
+----------+
| count(*) |
+----------+
| 999990 |
+----------+
1 row in set (0.83 sec)
mysql> desc t2
-> ;
+-------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+---------+-------+
| sid | int(11) | NO | | NULL | |
| sname | varchar(100) | NO | | NULL | |
+-------+--------------+------+-----+---------+-------+
2 rows in set (0.00 sec)
mysql> update t2 set sname='ocpyang mysql test!' limit 5000;
Query OK, 5000 rows affected (0.24 sec)
Rows matched: 5000 Changed: 5000 Warnings: 0
mysql> commit;
Query OK, 0 rows affected (0.00 sec)
mysql> select count(*) from wind.t2 where sname='ocpyang mysql test!';
+----------+
| count(*) |
+----------+
| 5000 |
+----------+
1 row in set (0.86 sec)
#mysqlbackup --defaults-file=/usr/local/mysql/my.cnf \
--host=127.0.0.1 --port=3306 --protocol=tcp \
--user=root --password=123 --use-tts --include-tables="wind.t2" \
--with-timestamp --log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
--incremental --start-lsn=138868639 \
--incremental-backup-dir=/backupinc backup
# cat /backupinc/2015-04-02_12-46-48/meta/backup_variables.txt | grep end
end_lsn=139571560
--4.4 合并增量备份到全备
ls /backupinc/
2015-04-02_12-44-02 2015-04-02_12-46-48
ls /backup
2015-04-02_12-41-45
mysqlbackup --backup-dir=/backup/2015-04-02_12-41-45/ \
--incremental-backup-dir=/backupinc/2015-04-02_12-44-02 \
--log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
apply-incremental-backup
mysqlbackup --backup-dir=/backup/2015-04-02_12-41-45 \
--incremental-backup-dir=/backupinc/2015-04-02_12-46-48 \
--log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
apply-incremental-backup
--4.5 模拟删除指定表
#cat /usr/local/mysql/my.cnf |grep datadir
datadir=/usr/local/mysql/data
mysql> select count(*) from t2;
+----------+
| count(*) |
+----------+
| 999990 |
+----------+
1 row in set (0.80 sec)
mysql> select count(*) from wind.t2 where sname='ocpyang mysql test!';
+----------+
| count(*) |
+----------+
| 5000 |
+----------+
1 row in set (0.86 sec)
mysql> drop table t2;
--4.6 还原指定表(使用mysql用户)
chown -R mysql /backup
chgrp -R mysql /backup
chown -R mysql /usr/local/mysql
chgrp -R mysql /usr/local/mysql
[mysql@mysql ~]$ whoami #避免权限问题
mysql
/***********************NOTE:权限问题出现的错误
150402 13:29:26 mysqlbackup: INFO: Importing table: wind.t2.
mysqlbackup: ERROR: mysql query: 'ALTER TABLE wind.t2 IMPORT TABLESPACE':
Internal error: Cannot reset LSNs in table '"wind"."t2"' : Tablespace not found
mysqlbackup: ERROR: Failed to import tablespace wind.t2.
mysqlbackup failed with errors!
*************************************************/
mysqlbackup --host=127.0.0.1 --port=3306 --protocol=tcp \
--user=root --password=123 \
--datadir=/usr/local/mysql/data/ \
--log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
--backup-dir=/backup/2015-04-02_12-41-45/ \
--include-tables='wind\.t2$' \
copy-back
[mysql@mysql ~]$ mysqlbackup --host=127.0.0.1 --port=3306 --protocol=tcp \
> --user=root --password=123 \
> --datadir=/usr/local/mysql/data/ \
> --log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index \
> --backup-dir=/backup/2015-04-02_12-41-45/ \
> --include-tables='wind\.t2$' \
> copy-back
MySQL Enterprise Backup version 3.12.0 Linux-2.6.18-194.el5-x86_64 [2015/03/10]
Copyright (c) 2003, 2015, Oracle and/or its affiliates. All Rights Reserved.
mysqlbackup: INFO: Starting with following command line ...
mysqlbackup --host=127.0.0.1 --port=3306 --protocol=tcp --user=root
--password=xxx --datadir=/usr/local/mysql/data/
--log-bin-index=/usr/local/mysql/mysql_logs/binary_log/mysql-bin.index
--backup-dir=/backup/2015-04-02_12-41-45/ --include-tables=wind\.t2$
copy-back
mysqlbackup: INFO:
IMPORTANT: Please check that mysqlbackup run completes successfully.
At the end of a successful 'copy-back' run mysqlbackup
prints "mysqlbackup completed OK!".
150402 13:38:25 mysqlbackup: INFO: MEB logfile created at /backup/2015-04-02_12-41-45/meta/MEB_2015-04-02.13-38-25_copy_back.log
mysqlbackup: INFO: MySQL server version is '5.6.23-enterprise-commercial-advanced-log'.
mysqlbackup: INFO: Got some server configuration information from running server.
--------------------------------------------------------------------
Server Repository Options:
--------------------------------------------------------------------
datadir = /usr/local/mysql/data/
innodb_data_home_dir = /usr/local/mysql/innodb_data
innodb_data_file_path = ibdata1:800M;ibdata2:800M:autoextend
innodb_log_group_home_dir = /usr/local/mysql/mysql_logs/innodb_log/
innodb_log_files_in_group = 3
innodb_log_file_size = 2147483648
innodb_page_size = 16384
innodb_checksum_algorithm = innodb
innodb_undo_directory = .
innodb_undo_tablespaces = 0
innodb_undo_logs = 128
--------------------------------------------------------------------
Backup Config Options:
--------------------------------------------------------------------
datadir = /backup/2015-04-02_12-41-45/datadir
innodb_data_home_dir = /backup/2015-04-02_12-41-45/datadir
innodb_data_file_path = ibdata1:800M;ibdata2:800M:autoextend
innodb_log_group_home_dir = /backup/2015-04-02_12-41-45/datadir
innodb_log_files_in_group = 3
innodb_log_file_size = 2147483648
innodb_page_size = 16384
innodb_checksum_algorithm = innodb
mysqlbackup: INFO: Creating 14 buffers each of size 16777216.
150402 13:38:25 mysqlbackup: INFO: Copy-back operation starts with following threads
1 read-threads 1 write-threads
mysqlbackup: INFO: Could not find binlog index file. binlogs will not be copied for this backup.
Point-In-Time-Recovery will not be possible.
If this is online backup then server may not have started with --log-bin.
You may specify its location with --log-bin-index option.
150402 13:38:25 mysqlbackup: INFO: Creating table: wind.t2.
150402 13:38:25 mysqlbackup: INFO: Copying /backup/2015-04-02_12-41-45/datadir/wind/t2.ibd.
150402 13:38:26 mysqlbackup: INFO: Completing the copy of all non-innodb files.
150402 13:38:27 mysqlbackup: INFO: Importing table: wind.t2.
150402 13:38:28 mysqlbackup: INFO: Analyzing table: wind.t2.
150402 13:38:29 mysqlbackup: INFO: Copy-back operation completed successfully.
150402 13:38:29 mysqlbackup: INFO: Finished copying backup files to '/usr/local/mysql/data'
mysqlbackup completed OK!
# ls -ll /usr/local/mysql/data/wind/
total 57360
-rw-rw----. 1 mysql mysql 61 Apr 2 13:26 db.opt
-rw-rw----. 1 mysql mysql 8590 Apr 2 13:38 t2.frm
-rw-rw-r--. 1 mysql mysql 58720256 Apr 2 13:38 t2.ibd
/*******
ALTER TABLE t2 discard TABLESPACE;
ALTER TABLE t2 IMPORT TABLESPACE;
*********/
--4.7验证表恢复情况
mysql> use wind;
Database changed
mysql> show tables;
+----------------+
| Tables_in_wind |
+----------------+
| t2 |
+----------------+
1 row in set (0.00 sec)
mysql> select count(*) from t2;
+----------+
| count(*) |
+----------+
| 999990 |
+----------+
1 row in set (1.34 sec)
mysql> select count(*) from wind.t2 where sname='ocpyang mysql test!';
+----------+
| count(*) |
+----------+
| 5000 |
+----------+
1 row in set (0.78 sec)
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