Disaster recovery

Author Message

Rob Borley

Tuesday 07 November 2006 6:57:32 am

Last week we had a server disaster and have had to rebuild the system

From the backups I have the complete folders from the exp installation.

How do i graft these on to a fresh install. I seem to be having particular problems with the DB.

Is there a method to this?

Please help!

Rob Borley

Tuesday 07 November 2006 7:32:59 am

From what I can tell the problem seems to be the ibdata1 file.

I guess this contains all the data as in, my recovered directory, its over 64mb but only 18 mb in the fresh install.

I've tried to simply copying the file across but this just stop mysql from restarting.

Does anybody know how to recover this,

Thanks.

Rob Borley

Wednesday 08 November 2006 3:52:57 am

Does anybody know anything about how to restore my database.

Any help greatfully received.

Thanks

Rob Borley

Monday 13 November 2006 3:45:58 am

Well, I managed to get this sorted in the end so, as nobody seem to know the answer, I thought I would post it here in case folk need it in future.

1. Clean install of MySQL
2. Stop the service
3. Copy the data you have from your rescued data directory (you need innodb1)

You will now find that the service will no start, if it does you will be able to see the tables but not access the data.

You need to run the following command

mysqld --innodb_log_file_size=xxxxxxx --innodb_force_recovery=4

The log file size needs to be correct. Check the error logs if you do not know the size, it will tell you from previous attempts to restart the service.

Now the data is restored and you can access it you can do a mysql dump.

Now you have the dump you can restore it to your ezp db.

Hope that helps.

Claudia Kosny

Monday 13 November 2006 7:48:01 am

Hi Rob

Thanks for the info. I hope I'll never need it but it is good to know what to do if necessary.

Claudia

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