Synchronization of sequential access storage components with backup catalog

摘要

Subsequent to a storage operation performed on the source instance by a source component, a synchronization message is sent to a replicated component for the replicated instance. The synchronization message is stored locally in a persistent storage location associated with the source component along with an indicator representative of a time the storage operation was performed. Pursuant to receipt of the synchronization message by the replicated component, the replicated component is updated to a dirty state to indicate a lack of full synchronization between the source and replicated instances.

主权项

1. A method for synchronization of source and replicated instances of sequential access storage components with a backup catalog in a computing environment by a processor device, comprising:
subsequent to a storage operation performed on the source instance by a source component, sending a synchronization message to a replicated component for the replicated instance, wherein the synchronization message is stored locally in a persistent storage location associated with the source component along with an indicator representative of a time the storage operation was performed; pursuant to receipt of the synchronization message by the replicated component, updating the replicated component to a dirty state to indicate a lack of full synchronization between the source and replicated instances; acknowledging receipt of the synchronization message by the replicated component to the source component by sending a dirty state acknowledgement; wherein if the replicated component has previously sent the dirty state acknowledgment, withholding sending an additional synchronization message; and if, during a subsequent recovery process, the dirty state is not yet cleared, the replicated component is deemed ineligible for participation in a full restoration operation.