xtrabackup8.0怎么恢复单表？
xtrabackup8.0怎么恢复单表？实验场景
GreatSQL 8.0.25InnoDB
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/backup2.恢复备份
xtrabackup --prepare --export --target-dir=/data/backup3.建测试表
>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)4.卸载新表表空间
>ALTER table t_user discard tablespace;
Query OK, 0 rows affected (0.11 sec)5.拷贝备份的t_user文件
# cd /data/backup/test/
# cp * /data/GreatSQL/test02/
# 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.ibd6.挂载新表表空间
>ALTER TABLE t_user import tablespace;
Query OK, 0 rows affected, 1 warning (0.47 sec)7.查询恢复数据
>select count(*) from test02.t_user;
+----------+
| count(*) |
+----------+
| 91002 |
+----------+
1 row in set (0.10 sec)
# 旧表的数据
>select count(*) from test.t_user;
+----------+
| count(*) |
+----------+
| 91002 |
+----------+
1 row in set (0.07 sec)
(Wed Nov 24 21:35:57 2021)>Enjoy GreatSQL :)
GreatSQL万答 发表于 2022-8-18 17:46
实验场景
GreatSQL 8.0.25InnoDB
学到了。
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