创建测试用表：
MariaDB [music]> create table summary(id int,info char(128));
Query OK, 0 rows affected (0.05 sec)
MariaDB [music]> show tables;
+-----------------+
| Tables_in_music |
+-----------------+
| summary |
| test |
+-----------------+
2 rows in set (0.00 sec)
插入测试数据：
MariaDB [music]> insert into summary values(1,'Eric Gao is a Oracle DBA');
Query OK, 1 row affected (0.00 sec)
MariaDB [music]> insert into summary values(2,'Eric Gao is a MySQL DBA');
Query OK, 1 row affected (0.05 sec)
MariaDB [music]> insert into summary values(3,'Eric Gao is a AIX SA');
Query OK, 1 row affected (0.00 sec)
MariaDB [music]> insert into summary values(4,'Eric Gao is a Linux SA');
Query OK, 1 row affected (0.01 sec)
MariaDB [music]> select * from summary;
+------+--------------------------+
| id | info |
+------+--------------------------+
| 1 | Eric Gao is a Oracle DBA |
| 2 | Eric Gao is a MySQL DBA |
| 3 | Eric Gao is a AIX SA |
| 4 | Eric Gao is a Linux SA |
+------+--------------------------+
4 rows in set (0.00 sec)
执行mysqldump备份：
[root@localhost ~]# mysqldump -u root --databases music --lock-all-tables --flush-logs > /tmp/music.sql
[root@localhost ~]# cd /tmp
[root@localhost tmp]# ls -lt
total 86744
-rw-r--r--. 1 root root 1948 Mar 4 05:58 music.sql
删除数据库，已验证稍后还原效果：
MariaDB [(none)]> drop database music;
Query OK, 2 rows affected (0.03 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)
可以看到music数据库已经不在了。
还原整库：
MariaDB [(none)]> source /tmp/music.sql
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 1 row affected (0.00 sec)
Database changed
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.04 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 4 rows affected (0.00 sec)
Records: 4 Duplicates: 0 Warnings: 0
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.01 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.01 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 4 rows affected (0.01 sec)
Records: 4 Duplicates: 0 Warnings: 0
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
MariaDB [music]>
验证数据是否已找回：
MariaDB [music]> select * from summary;
+------+--------------------------+
| id | info |
+------+--------------------------+
| 1 | Eric Gao is a Oracle DBA |
| 2 | Eric Gao is a MySQL DBA |
| 3 | Eric Gao is a AIX SA |
| 4 | Eric Gao is a Linux SA |
+------+--------------------------+
4 rows in set (0.00 sec)
OK
，数据已还原！~~~