Re: Diff between restore from tar and recover from power outage

[Wm Mussatto]

On Mon, June 4, 2007 14:21, murthy gandikota said:
> Hi
>   When restoring a DB from a tar file, I had to repair some of the tables.
> Whereas when the DB is started after a power failure, everything works
> fine. I noticed this on RedHat linux and MySQL5.
>
>   Any thoughts?
>
>   Thanks
>   Murthy
>
What was in the tar file?  If you tar'ed the data directory, it is almost
guaranteed to fail since only part of the updated information may be
actually written to disk.  If the power failure occurred on a system with
a correctly configured UPS, mysql probably got a shut down command so the
disk files were in a stable state.

Normally you should dump the databases and then tar that.  (see mysqldump
command for details).

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William R. Mussatto, Senior Systems Engineer
http://www.csz.com
Ph. 909-920-9154 ext. 27
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