大表count(*) 导致宕机

千家信息网最后更新 2026年10月31日大表count(*) 导致宕机
对表做 select count(*) from tbname;

异常信息如下

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1. 016-03-24 21:37:28 17887 [ERROR] InnoDB: Tried to read 16384 bytes at offset 50072698880. Was only able to read 8192.
2. 2016-03-24 21:37:28 7faab67f6700 InnoDB: Operating system error number 11 in a file operation.
3. InnoDB: Error number 11 means 'Resource temporarily unavailable'.
4. InnoDB: Some operating system error numbers are described at
5. InnoDB: http://dev.mysql.com/doc/refman/5.6/en/operating-system-error-codes.html
6. 2016-03-24 21:37:28 7faab67f6700 InnoDB: File operation call: 'read' returned OS error 111.
7. 2016-03-24 21:37:28 7faab67f6700 InnoDB: Cannot continue operation.
8. pure virtual method called
9. pure virtual method called
10. terminate called without an active exception
11. terminate called without an active exception
12. 13:37:28 UTC - mysqld got signal 6 ;
13. 
    
14. This could be because you hit a bug. It is also possible that this binary

ulimit -a 没超过限制

可能是表数据文件损坏，在slave上执行没有报错