Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-8353

mdt unlink should lock parent before lookup child

    XMLWordPrintable

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.

      Attachments

        Issue Links

          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

            People

              laisiyao Lai Siyao
              laisiyao Lai Siyao
              Votes:
              0 Vote for this issue
              Watchers:
              5 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: