Importance

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Abstract

A method and system for ensuring an current and valid copy of a distributed database is re-installed for a file server that has failed and been restored or otherwise has been offline and is then brought online. This invention can include validating the database each time the database is opened. The method can include placing a signature in the database indicating that the database was closed normally. The method can also include indicating the time the database was last used. The method can also check the partition placement and structure with other servers that hold replicas to insure that the partition structure is correct. The method can also include comparing the synchronization state of replicas with the other servers that hold replicas of the database to see if they agree on the synchronized/time/state of the replicas of the restored server. The method can also check to see that the database belongs to this server. The method can then notify the operator/administrator if the database is determined to be old or foreign. The operator/administrator can then produce a more suitable database if possible.

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First Claim