The Case for Cross-Layer Optimizations in Storage: A Workflow-Optimized Storage System

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Provided by: Cornell University
Topic: Storage
Format: PDF
In this paper, the authors propose using file system custom metadata as a bidirectional communication channel between applications and the storage system. This channel can be used to pass hints that enable cross-layer optimizations, an option hindered today by the ossified file-system interface. The authors study this approach in context of storage system support for large-scale workflow execution systems: their Workflow Optimized Storage System (WOSS), exploits application hints to provide per-file optimized operations, and exposes data location to enable location-aware scheduling.
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