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Soft Updates: A Solution to the Metadata Update Problem in File Systems (2000)

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by Gregory R. Ganger , Marshall Kirk McKusick , Craig A. N. Soules , Yale N. Patt
Citations:48 - 8 self
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User correction supplied by SystemCorrections

DatumValueSource
TITLE Soft Updates: A Solution to the Metadata Update Problem in File Systems user correction - Legacy Corrections
AUTHOR NAME Gregory R. Ganger user correction - Legacy Corrections
AUTHOR AFFIL Carnegie Mellon University user correction - Legacy Corrections
AUTHOR NAME Marshall Kirk McKusick user correction - Legacy Corrections
AUTHOR NAME Craig A. N. Soules user correction - Legacy Corrections
AUTHOR AFFIL Carnegie Mellon University; and user correction - Legacy Corrections
AUTHOR NAME Yale N. Patt user correction - Legacy Corrections
AUTHOR AFFIL ; University of Texas, Austin; Authors ' addresses: G. R. Ganget; Mellon University, Pittsburgh, PA 15217; emaih; of Texas, Austin, Austin, TX; emaih user correction - Legacy Corrections
AUTHOR ADDR ; Street, Berkeley, CA 94709-1608; emaih;; C. A. N. Soules, Carnegie;; Y. N. Part, University user correction - Legacy Corrections
ABSTRACT This article describes soft updates, their incorporation into the 4.4BSD fast file system, and the resulting effects on the system. We show that a disk-based file system using soft updates achieves memory-based file system performance while providing stronger integrity and security guarantees than most disk-based file systems. For workloads that frequently perform updates on metadata (such as creating and deleting files), this improves performance by more than a factor of two and up to a factor of 20 when compared to the conventional synchronous write approach and by 4-19% when compared to an aggressive write-ahead logging approach. In addition, soft updates can improve file system availability by relegating crash-recovery assistance (e.g., the }sck utility) to an optional and background role, reducing file system recovery time to less than one second user correction - Legacy Corrections
YEAR 2000 user correction - Legacy Corrections
CITATIONS 32 found ParsCit 1.0
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