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  1. Lustre
  2. LU-10176 Data-on-MDT phase II
  3. LU-11121

DoM: mdt take discard lock at cleanup stage

Details

    • Technical task
    • Resolution: Fixed
    • Minor
    • Lustre 2.12.0
    • None
    • 9223372036854775807

    Description

      Call mdt_dom_check_and_discard() after mdt_object_unlock() to avoid possible deadlock if some third lock is conflicting with both like in the scenario below:

      • thread1: mdt_object_lock() with some bits
      • thread2: take conflicting lock and wait
      • thread1: mdt_dom_check_and_discard() with bits conflicting with thread2 causes deadlock.

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        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-11270 Racer is stuck on ldlm lock

          • Major - Major loss of function.
          • Resolved

          Activity

            [LU-11121] DoM: mdt take discard lock at cleanup stage
            tappro Mikhail Pershin made changes -
            Link New: This issue is related to LU-11270 [ LU-11270 ]
            pjones Peter Jones made changes -
            Resolution New: Fixed [ 1 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            jgmitter Joseph Gmitter (Inactive) created issue -

            People

              tappro Mikhail Pershin
              jgmitter Joseph Gmitter (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: