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A Provenance-Aware Storage System (PASS) is a storage system that
automatically collects and maintains provenance or
lineage, the complete history or ancestry of an item. We
discuss the advantages of treating provenance as meta-data collected
and maintained by the storage system, rather than as manual
annotations stored in a separately administered database. We describe
a PASS implementation, discussing the challenges it presents,
performance cost it incurs, and the new functionality it enables. We
show that with reasonable overhead, we can provide useful
functionality not available in today's file systems or provenance
management systems.
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