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实验场景
GreatSQL 8.0.25 InnoDB
1.备份,导出单表, test.t_user
- /usr/bin/xtrabackup -uroot -p'GreatSQL' -S /data/GreatSQL/mysql.sock --tables='test.t_user' --backup --target-dir=/data/backup
复制代码 2.恢复备份
- xtrabackup --prepare --export --target-dir=/data/backup
复制代码 3.建测试表
- [root@GreatSQL][test02]>CREATE TABLE `t_user` (
- -> `id` bigint NOT NULL AUTO_INCREMENT,
- -> `name` varchar(255) DEFAULT NULL,
- -> `age` tinyint DEFAULT NULL,
- -> `create_time` datetime DEFAULT NULL,
- -> `update_time` datetime DEFAULT NULL,
- -> PRIMARY KEY (`id`),
- -> KEY `idx_name` (`name`),
- -> KEY `idx_age` (`age`)
- -> ) ENGINE=InnoDB AUTO_INCREMENT=1091002 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
- Query OK, 0 rows affected (0.16 sec)
复制代码 4.卸载新表表空间
- [root@GreatSQL][test02]>ALTER table t_user discard tablespace;
- Query OK, 0 rows affected (0.11 sec)
复制代码 5.拷贝备份的t_user文件
- [root@localhost test]# cd /data/backup/test/
- [root@localhost test2]# cp * /data/GreatSQL/test02/
- [root@localhost test2]# ll
- -rw-r--r-- 1 root root 964 Nov 24 04:12 t_user.cfg
- -rw-r----- 1 root root 18874368 Nov 24 04:10 t_user.ibd
复制代码 6.挂载新表表空间
- [root@GreatSQL][test02]>ALTER TABLE t_user import tablespace;
- Query OK, 0 rows affected, 1 warning (0.47 sec)
复制代码 7.查询恢复数据
- [root@GreatSQL][test02]>select count(*) from test02.t_user;
- +----------+
- | count(*) |
- +----------+
- | 91002 |
- +----------+
- 1 row in set (0.10 sec)
- # 旧表的数据
- [root@GreatSQL][test02]>select count(*) from test.t_user;
- +----------+
- | count(*) |
- +----------+
- | 91002 |
- +----------+
- 1 row in set (0.07 sec)
- (Wed Nov 24 21:35:57 2021)[root@GreatSQL][test02]>
复制代码 Enjoy GreatSQL
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