mysql5.7 os_file_get_status() failed on './ibdata1'. Can't determine file pe
https://blog.csdn.net/juane/article/details/86687141
ERROR 3009 (HY000): Column count of mysql.user is wrong. Expected 45, found 43. Created with MySQL 5
https://blog.csdn.net/qq_33350186/article/details/72528810