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MySQL unstable behavior with external stroge

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linux-howto

http://serverfault.com – In our project we are using MySQL 5.0.90(InnoDB engine) server with an external storage. We store MySQL data files in an external storage. When the external storage down for a reason we have unstable behaviours. So we made some tests. In Windows Server 2008 We closed external storage physically. MySQL service stoped and we could not reach the server. Then we opened the storage unit and we could start service Logs 120618 14:49:30 InnoDB: Operating system error number 21 in a file operation. InnoDB: Some operating system error numbers are described at InnoDB: http://dev.mysql.com/doc/refma (HowTos)