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?在MySQL數據庫的維護過程中，我們有時候會在MySQL的錯誤日志文件中看到一些關于Operating system error的錯誤信息，例如在MySQL的錯誤日志里面，有時候會看到關于

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InnoDB: Operating system error number 0.

InnoDB: Check that your OS and file system support files of this size.

InnoDB: Check also that the disk is not full or a disk quota exceeded.

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InnoDB: Operating system error number 5.

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?那么這些System Error Code在Linux下分別代表什么意思呢？其實如果遇到錯誤日志里有這些對應的代碼，使用MySQL自帶的命令工具perror查看一下具體信息即可。非常簡單方便。

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[root@DB-Server ~]# perror 2;

OS error code?? 2:? No such file or directory

[root@DB-Server ~]# perror 3;

OS error code?? 3:? No such process

[root@DB-Server ~]# perror 4;

OS error code?? 4:? Interrupted system call

[root@DB-Server ~]# perror 5;

OS error code?? 5:? Input/output error

[root@DB-Server ~]#

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如果你要查看一個范圍的Operating system error，可以使用下面命令

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[root@DB-Server ~]# perror `seq 0 10`

OS error code?? 0:? Success

OS error code?? 1:? Operation not permitted

OS error code?? 2:? No such file or directory

OS error code?? 3:? No such process

OS error code?? 4:? Interrupted system call

OS error code?? 5:? Input/output error

OS error code?? 6:? No such device or address

OS error code?? 7:? Argument list too long

OS error code?? 8:? Exec format error

OS error code?? 9:? Bad file descriptor

OS error code? 10:? No child processes

[root@DB-Server ~]#

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? 如果是集群，那么可以shell> perror --ndb errorcode查看， 下面表格是關于Linux平臺下通用的System Error Code列表，如下所示，完全沒有必要硬性記住。遇到查看即可。

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Number	Macro	Description
1	EPERM	Operation not permitted
2	ENOENT	No such file or directory
3	ESRCH	No such process
4	EINTR	Interrupted system call
5	EIO	I/O error
6	ENXIO	No such device or address
7	E2BIG	Arg list too long
8	ENOEXEC	Exec format error
9	EBADF	Bad file number
10	ECHILD	No child processes
11	EAGAIN	Try again
12	ENOMEM	Out of memory
13	EACCES	Permission denied
14	EFAULT	Bad address
15	ENOTBLK	Block device required
16	EBUSY	Device or resource busy
17	EEXIST	File exists
18	EXDEV	Cross-device link
19	ENODEV	No such device
20	ENOTDIR	Not a directory
21	EISDIR	Is a directory
22	EINVAL	Invalid argument
23	ENFILE	File table overflow
24	EMFILE	Too many open files
25	ENOTTY	Inappropriate ioctl for device
26	ETXTBSY	Text file busy
27	EFBIG	File too large
28	ENOSPC	No space left on device
29	ESPIPE	Illegal seek
30	EROFS	Read-only file system
31	EMLINK	Too many links

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如果是Windows平臺，那么也可以使用下面命令查看具體的System Error Code信息，另外，Windows平臺下的System Error Code也遠比Linux平臺下要多，遇到了這些System Error Code，使用命令查看即可。

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perror.exe 2

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perror `perl -e "print join ' ',1..100"`

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參考資料：

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http://doc.docs.sk/mysql-refman-5.5/operating-system-error-codes.html

轉載于:https://www.cnblogs.com/kerrycode/p/8698890.html

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