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Computer Science > Operating Systems

arXiv:2406.09649 (cs)
[Submitted on 14 Jun 2024]

Title:SquirrelFS: using the Rust compiler to check file-system crash
consistency

Authors:Hayley LeBlanc, Nathan Taylor, James Bornholt, Vijay
Chidambaram
View a PDF of the paper titled SquirrelFS: using the Rust compiler to
check file-system crash consistency, by Hayley LeBlanc and 3 other
authors
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    Abstract:This work introduces a new approach to building
    crash-safe file systems for persistent memory. We exploit the
    fact that Rust's typestate pattern allows compile-time
    enforcement of a specific order of operations. We introduce a
    novel crash-consistency mechanism, Synchronous Soft Updates, that
    boils down crash safety to enforcing ordering among updates to
    file-system metadata. We employ this approach to build
    SquirrelFS, a new file system with crash-consistency guarantees
    that are checked at compile time. SquirrelFS avoids the need for
    separate proofs, instead incorporating correctness guarantees
    into the typestate itself. Compiling SquirrelFS only takes tens
    of seconds; successful compilation indicates crash consistency,
    while an error provides a starting point for fixing the bug. We
    evaluate SquirrelFS against state of the art file systems such as
    NOVA and WineFS, and find that SquirrelFS achieves similar or
    better performance on a wide range of benchmarks and
    applications.

Subjects: Operating Systems (cs.OS)
Cite as:  arXiv:2406.09649 [cs.OS]
          (or arXiv:2406.09649v1 [cs.OS] for this version)
          https://doi.org/10.48550/arXiv.2406.09649
          Focus to learn more
          arXiv-issued DOI via DataCite

Submission history

From: Hayley LeBlanc [view email]
[v1] Fri, 14 Jun 2024 00:51:36 UTC (692 KB)
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