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  1. Lustre
  2. LU-8353

mdt unlink should lock parent before lookup child

Details

    • Bug
    • Resolution: Fixed
    • Critical
    • Lustre 2.9.0
    • Lustre 2.8.0
    • 3
    • 9223372036854775807

    Description

      In DNE Commit-on-Sharing implementation, mdt_reint_unlink() changed code to lookup child before lock parent, as is to find whether current operation is distributed, if so it needs to trigger commit of local changes to eliminate dependencies. But this may cause stale child used in later code. We should always follow lock-before-lookup semantic.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-6844 replay-single test 70b failure: 'rundbench load on * failed!'

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-7117 replay-single test_70d: timeout and mkdir/rmdir stopped

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Activity

            [LU-8353] mdt unlink should lock parent before lookup child
            jgmitter Joseph Gmitter (Inactive) made changes -
            Link New: This issue is related to JFC-22 [ JFC-22 ]
            di.wang Di Wang made changes -
            Link New: This issue is related to LU-6844 [ LU-6844 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Resolution New: Fixed [ 1 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Link New: This issue is related to LU-7117 [ LU-7117 ]
            laisiyao Lai Siyao created issue -

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              laisiyao Lai Siyao
              laisiyao Lai Siyao
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              Dates

                Created:
                Updated:
                Resolved: