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  1. Lustre
  2. LU-5497

Many MDS service threads blocked in ldlm_completion_ast()

Details

    • Bug
    • Resolution: Won't Fix
    • Blocker
    • None
    • Lustre 2.4.2
    • 3
    • 15338

    Description

      Our production MDS systems occasionally get stuck with many service threads stuck in ldlm_completion_ast(). The details were described in LU-4579, but that issue was closed when the patch landed which fixed how timeouts are reported.

      When this happens, client access hangs and the MDS appears completely idle.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-4579 Timeout system horribly broken

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

          Activity

            [LU-5497] Many MDS service threads blocked in ldlm_completion_ast()
            simmonsja James A Simmons made changes -
            Resolution New: Won't Fix [ 2 ]
            Status Original: Open [ 1 ] New: Closed [ 6 ]
            pjones Peter Jones made changes -
            End date New: 13/Jan/16
            Start date New: 15/Aug/14
            morrone Christopher Morrone (Inactive) made changes -
            Labels New: llnl
            pjones Peter Jones made changes -
            Assignee Original: WC Triage [ wc-triage ] New: Oleg Drokin [ green ]
            nedbass Ned Bass (Inactive) made changes -
            Description Original: Our production MDS systems occasionally get stuck with many service threads stuck in {{ldlm_completion_ast()}}. The details were described in LU-4579, but that issue was closed when the patch landed which fixed how timeouts are reported. New: Our production MDS systems occasionally get stuck with many service threads stuck in {{ldlm_completion_ast()}}. The details were described in LU-4579, but that issue was closed when the patch landed which fixed how timeouts are reported.

            When this happens, client access hangs and the MDS appears completely idle.
            nedbass Ned Bass (Inactive) made changes -
            Link New: This issue is related to LU-4579 [ LU-4579 ]
            nedbass Ned Bass (Inactive) created issue -

            People

              green Oleg Drokin
              nedbass Ned Bass (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: