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  1. Lustre
  2. LU-17426

parallel cross-directory rename of regular files on single MDT

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    • Icon: Improvement Improvement
    • Resolution: Fixed
    • Icon: Minor Minor
    • Lustre 2.16.0
    • Lustre 2.14.0, Lustre 2.16.0
    • 3
    • 9223372036854775807

      It should be possible to allow cross-directory rename of regular files (strictly, any non-directory) on the same MDT without holding the BigFilesystemLock (BFL), as file renames cannot change the directory hierarchy.

      That should improve the performance for these rename operations, and reduce contention between local MDT file renames in different parts of the directory tree.

      That would leave directory and cross-MDT renames needing the BFL, which should be an increasingly small fraction of all rename operations.

            laisiyao Lai Siyao
            adilger Andreas Dilger
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