Recon: Verifying file system consistency at runtime

  title={Recon: Verifying file system consistency at runtime},
  author={Daniel Fryer and Kuei Sun and Rahat Mahmood and Tinghao Cheng and Shaun Benjamin and Ashvin Goel and Angela Demke Brown},
File system bugs that corrupt metadata on disk are insidious. Existing reliability methods, such as checksums, redundancy, or transactional updates, merely ensure that the corruption is reliably preserved. Typical workarounds, based on using backups or repairing the file system, are painfully slow. Worse, the recovery may result in further corruption. We present Recon, a system that protects file system metadata from buggy file system operations. Our approach leverages file systems that… CONTINUE READING
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