MySQL unstable behavior with external stroge

Posted by onurozcelik on Server Fault See other posts from Server Fault or by onurozcelik
Published on 2012-06-18T08:49:35Z Indexed on 2012/06/18 9:17 UTC
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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 not start service until we reconfigured MySQL.

  • We made storage unit offline from operating system. After 3-4 minutes and some insert trials(some insert trials succeded) MySQL service stoped and we could not reach the server. Then we made storage unit online and we could start the service(not automatically).

In Windows Server 2003

  • We made storage unit offline. After 3-4 minutes and some insert trials(some insert trials succeded) MySQL service stoped and we could not reach the server. Then we made storage unit online we could not start the service until we reinstalled MySQL. Before reinstall we tried to reconfigure but it did not work.

  • We closed external storage physically. MySQL service stoped and we could not reach the server. After that we opened the storage unit and we could start service(not automatically)

We expect service to autostart after storage unit is online/open. But these tests show unstable behaviors. Is there any solutions to this.

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