mysql 插入大数据时，出现： ERROR 126 (HY000): Incorrect key file for table ‘/tmp/#sql_2005_0.MYI’; try to repair it

mysql 插入大数据时，出现： ERROR 126 (HY000): Incorrect key file for table ‘/tmp/#sql_2005_0.MYI’; try to repair it

案例：

mysql> insert into t1 select * from t1;
Query OK, 24576 rows affected (0.44 sec)
Records: 24576  Duplicates: 0  Warnings: 0

mysql> insert into t1 select * from t1;
Query OK, 49152 rows affected (1.90 sec)
Records: 49152  Duplicates: 0  Warnings: 0

mysql> insert into t1 select * from t1;
ERROR 126 (HY000): Incorrect key file for table ‘/tmp/#sql_1d87_0.MYI’; try to repair it

从上面的情况看，好似空间的问题，因为前几次insert都成功了，

查看磁盘空间如下：

[root@localhost ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00 5.3G  5.0G   50M 100% /
/dev/sda1              99M   12M   83M  13% /boot
tmpfs                 125M     0  125M   0% /dev/shm
/dev/sdb1             7.7G  183M  7.2G   3% /data

在查看mysql数据目录情况

mysql> show variables like '%dir%';

+—————————————–+————————————+
| Variable_name                           | Value                              |
+—————————————–+————————————+
| basedir                                 | /usr/local/mysql                   |
| binlog_direct_non_transactional_updates | OFF                                |
| character_sets_dir                      | /usr/local/mysql/share/charsets/   |
| datadir                                 | /usr/local/mysql/data/             |
| innodb_data_home_dir                    | /data/mysql/data                   |
| innodb_log_group_home_dir               | /data/mysql/data                   |
| innodb_max_dirty_pages_pct              | 75                                 |
| lc_messages_dir                         | /usr/local/mysql/share/            |
| plugin_dir                              | /usr/local/mysql/lib/mysql/plugin/ |
| slave_load_tmpdir                       | /tmp                               |
| tmpdir                                  | /tmp                               |
+—————————————–+————————————+
11 rows in set (0.01 sec)

从上面看确实是空间满了，然后调整变量“tmpdir”和“slave_load_tmpdir”，指定一个比较大的目录，然后重启mysql服务，结果就ok了

具体方法： 
vim /etc/my.cnf   添加如下：

[mysqld]
...
tmpdir=/data/mysql                       #新添加
slave_load_tmpdir=/data/mysql            #新添加

[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL (Percona Server)…..[  OK  ]
Starting MySQL (Percona Server)…[  OK  ] 

[root@localhost ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 116
Server version: 5.5.27-ndb-7.2.8 Source distribution

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

mysql> use test;
Database changed
mysql> insert into t2 select * from t2;
Query OK, 98304 rows affected (4.48 sec)
Records: 98304  Duplicates: 0  Warnings: 0

OK 大功告成！