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  1. Lustre
  2. LU-17426

parallel cross-directory rename of regular files on single MDT

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Details

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

    Description

      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.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-17446 BL AST should stop resending if lock is cancelled

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. LU-15913 rename stress test leads to REMOTE_PARENT_DIR corruption

          • Blocker - Blocks development and/or testing work, production could not run.
          • Reopened

          Improvement - An improvement or enhancement to an existing feature or task. LU-17434 DNE3: add exclude list for remote subdirectory creation

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-17441 move rename RPC handling to MDS_IO_PORTAL

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. LU-17427 reduce hold time for BFL rename lock

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. LU-12125 Allow parallel rename of regular files

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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            People

              laisiyao Lai Siyao
              adilger Andreas Dilger
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              Dates

                Created:
                Updated:
                Resolved: