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DOE OSTI · 1824127

Grand unified file indexing

Grider, Gary A.·Manno, Dominic Anthony·Poole, Wendy Kinton·Bonnie, David J.·Inman, Jeffrey Thornton
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Abstract

Systems and methods are disclosed for a unified file index for a file system. In one example, a Grand Unified File Index (GUFI) includes a tree replicating the directory hierarchy of one or more primary filesystems, and individual metadata stores for each directory. The GUFI tree permits fast traversal, efficient user space access controls, and simple tree directed operations such as renames, moves, or permission changes. In some examples, the individual metadata stores can be implemented as embedded databases on flash storage for speed. In some examples, use of summary tables at the directory or subtree level can eliminate wasteful executions, prune tree traversal, and further improve performance. In various examples, efficient operation can be achieved from laptop to supercomputer scale, across a wide mix of file distributions and filesystems.

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97 MATHEMATICS AND COMPUTING

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Grider, Gary A., Manno, Dominic Anthony, Poole, Wendy Kinton, Bonnie, David J., Inman, Jeffrey Thornton. 2021-06-29. Grand unified file indexing. https://www.osti.gov/biblio/1824127

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