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Reclaiming space from duplicate files in a serverless distributed file system
Abstract
The Farsite distributed file system provides availability by replicating each file onto multiple desktop computers. Since this replication consumes significant storage space, it is important to reclaim used space where possible. Measurement of over 500 desktop file systems shows that nearly half of all consumed space is occupied by duplicate files. We present a mechanism to reclaim space from this incidental duplication to make it available for controlled file replication. Our mechanism includes: (1) convergent encryption, which enables duplicate files to be coalesced into the space of a single file, even if the files are encrypted with different users' keys; and (2) SALAD, a Self-Arranging Lossy Associative Database for aggregating file content and location information in a decentralized, scalable, fault-tolerant manner. Large-scale simulation experiments show that the duplicate-file coalescing system is scalable, highly effective, and fault-tolerant.
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Cites
Handbook of applied cryptography
(1997) · Choice Reviews Online · doi:10.5860/choice.34-4512 · Cited by 10,357
Cited by
Message-Locked Encryption and Secure Deduplication
Bellare, M., Keelveedhi, S., & Ristenpart, T. (2013) · Lecture Notes in Computer Science · doi:10.1007/978-3-642-38348-9_18 · Cited by 632
Side Channels in Cloud Services: Deduplication in Cloud Storage
Harnik, D., Pinkas, B., & Shulman-Peleg, A. (2010) · IEEE Security & Privacy Magazine · doi:10.1109/msp.2010.187 · Cited by 522
Storer, M. W., Greenan, K., Long, D. D. E., & Miller, E. L. (2008) · Proceedings of the 4th ACM international workshop on Storage security and survivability · doi:10.1145/1456469.1456471 · Cited by 288
Metadata
- Authors
- Douceur, J. R., Adya, A., Bolosky, W. J., Simon, P., & Theimer, M.
- Venue
- Proceedings 22nd International Conference on Distributed Computing Systems
- Publisher
- IEEE Comput. Soc
- Published
- 2003-06-25
- Pages
- 617-624
- OpenAlex
- W2157240622
- Cited by
- 645
- References
- 1
- FWCI
- 3.25
- Type
- conference paper
- Language
- en
- Open access
- closed
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- Douceur, J. R., Adya, A., Bolosky, W. J., Simon, P., & Theimer, M. (2003). Reclaiming space from duplicate files in a serverless distributed file system. Proceedings 22nd International Conference on Distributed Computing Systems. https://doi.org/10.1109/icdcs.2002.1022312
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
