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  1. Lustre
  2. LU-10769

osd-zfs deadlock on osd_object::oo_guard

Details

    • Bug
    • Resolution: Fixed
    • Blocker
    • Lustre 2.11.0, Lustre 2.10.4
    • Lustre 2.10.0, Lustre 2.11.0
    • None
    • 2
    • 9223372036854775807

    Description

      Consider the following scenarios:

      1) The Thread1 calls osd_attr_set() to set flags on the object. The osd_attr_set() will call the osd_xattr_get() with holding the read mode semaphore on the object::oo_guard.

      2) The Thread2 calls osd_declare_destroy() to destroy the object, it will down_write() on the object::oo_gurad, but be blocked by the Thread1's granted read mode semaphore.

      3) The osd_xattr_get() triggered by the osd_xattr_set() will also down_read() on the object::oo_guard. But it will be blocked by the Thread2's pending down_write() request.

      Then the Thread1 and the Thread2 deadlock.

      Attachments

        Activity

          [LU-10769] osd-zfs deadlock on osd_object::oo_guard
          pjones Peter Jones made changes -
          Link Original: This issue is related to JFC-26 [ JFC-26 ]
          mdiep Minh Diep made changes -
          Fix Version/s New: Lustre 2.10.4 [ 13691 ]
          pjones Peter Jones made changes -
          Affects Version/s New: Lustre 2.10.0 [ 12204 ]
          Affects Version/s New: Lustre 2.11.0 [ 13091 ]
          Affects Version/s Original: LTS [ 13791 ]
          pjones Peter Jones made changes -
          Link New: This issue is related to JFC-26 [ JFC-26 ]
          pjones Peter Jones made changes -
          Link New: This issue is related to JFC-20 [ JFC-20 ]
          pjones Peter Jones made changes -
          Resolution New: Fixed [ 1 ]
          Status Original: In Progress [ 3 ] New: Resolved [ 5 ]
          pjones Peter Jones made changes -
          Affects Version/s New: LTS [ 13791 ]
          pjones Peter Jones made changes -
          Fix Version/s Original: Lustre 2.8.0 [ 11113 ]
          Fix Version/s Original: Lustre 2.9.0 [ 11891 ]
          Fix Version/s Original: Lustre 2.10.0 [ 12204 ]
          Fix Version/s Original: Lustre 2.10.1 [ 13090 ]
          Fix Version/s Original: Lustre 2.10.2 [ 13494 ]
          Fix Version/s Original: Lustre 2.12.0 [ 13495 ]
          Fix Version/s Original: Lustre 2.10.3 [ 13591 ]
          Fix Version/s Original: Lustre 2.10.4 [ 13691 ]
          pjones Peter Jones made changes -
          Link Original: This issue is related to BGI-78 [ BGI-78 ]
          pjones Peter Jones made changes -
          Link New: This issue is related to BGI-78 [ BGI-78 ]

          People

            yong.fan nasf (Inactive)
            yong.fan nasf (Inactive)
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            Dates

              Created:
              Updated:
              Resolved: