Share on Facebook Tweet on Twitter Share on LinkedIn Share by email
Distributed directory service in the farsite file system

John R. Douceur and Jon Howell

Abstract

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.

Details

Publication typeInproceedings
Published inProceedings of the 7th Symposium on Operating Systems Design and Implementation (OSDI)
PublisherUSENIX
> Publications > Distributed directory service in the farsite file system