mysqldump: Couldn’t execute ‘SHOW FUNCTION STATUS WHERE Db = ‘your-db-here”: Column count of mysql.proc is wrong. Expected 20, found 16. Created with MySQL 50077, now running 50152. Please use mysql_upgrade to fix this error. (1558)

mysqldump: Couldn’t execute ‘SHOW FUNCTION STATUS WHERE Db = ‘your-db-here”: Column count of mysql.proc is wrong. Expected 20, found 16. Created with MySQL 50077, now running 50152. Please use mysql_upgrade to fix this error. (1558)

/usr/bin/mysql_upgrade -uxxxx -pxxxxxx

如果你的webmin/virtualmin自动备份出现下面的错误，那么，就是mysql升级后没有做mysql_upgrade 表修复。 在新版下执行mysql_upgrade命令，其实这个命令包含一下三个命令：

# mysqlcheck –check-upgrade –all-databases –auto-repai

# mysql_fix_privilege_tables

# mysqlcheck –all-databases –check-upgrade –fix-db-names –fix-table-names

Note: 在每一次的升级过程中，mysql_upgrade这个命令我们都应该去执行，它通过mysqlcheck命令帮我们去检查表是否兼容新版本的数据库同时作出修复，还有个很重要的作用就是使用mysql_fix_privilege_tables命令去升级权限表。