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Distributed Directory Service in the Farsite File System

11 years 4 months ago
Distributed Directory Service in the Farsite File System
We present the design, implementation, and evaluation of a fully distributed directory service for Farsite, a logically centralized file system that is physically implemented on a loosely coupled network of desktop computers. Prior to this work, the Farsite system included distributed mechanisms for file content but centralized mechanisms for file metadata. Our distributed directory service introduces tree-structured file identifiers that support dynamically partitioning metadata at arbitrary granularity, recursive path leases for scalably maintaining name-space consistency, and a protocol for consistently performing operations on files managed by separate machines. It also mitigates metadata hotspots via file-field leases and the new mechanism of disjunctive leases. We experimentally show that Farsite can dynamically partition file-system metadata while maintaining full file-system semantics.
John R. Douceur, Jon Howell
Added 03 Dec 2009
Updated 03 Dec 2009
Type Conference
Year 2006
Where OSDI
Authors John R. Douceur, Jon Howell
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