MySQL:[ERROR] InnoDB: Unable to lock ./ibdata1 error: 11特殊错误一列
作者简介：高鹏，笔名八怪。《深入理解MySQL主从原理》图书作者，同时运营个人公众号“MySQL学习”，持续分享遇到的有趣case以及代码解析！
一、问题
一般来讲启动多个mysqld作用同一个数据文件会报这个错。但是这里不是。第一遇到这个问题，用户用的nas存储数据文件，记录一下。mysql重启后一直启动不了，即便重启OS也不不行。一直报错如下：
2021-03-25T11:11:02.069545-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:03.070008-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:04.077948-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:05.079244-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:06.080286-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:07.081550-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:08.087447-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:09.089804-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:10.091393-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:11.093382-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:12.095409-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:13.096458-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:14.099403-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:15.101033-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
2021-03-25T11:11:16.103315-05:00 0 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
