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  1. Lustre
  2. LU-5333

rm cause MDS to complain hung tasks and disconnecting clients

Details

    • Bug
    • Resolution: Fixed
    • Major
    • None
    • Lustre 2.4.3
    • Linux puma-mds-10-6.local 2.6.32-358.23.2.el6_lustre.x86_64 #1 SMP Thu Dec 19 19:57:45 PST 2013 x86_64 x86_64 x86_64 GNU/Linux
    • 2
    • 14881

    Description

      A client was running "rm" to remove a couple of million files when MDS system load shot to 30 and kernel trace dumping complaining hung tasks - See attached output from "dmesg"

      I would think this is normal workload for a duo-westmere CPU / 24GB RAM bonded myricom 10Gbps system.

      We have been seeing happening more frequently in 2.4.3 than when we were at 1.8.7.

      Anything suggestion?

      thanks,
      Haisong

      Attachments

        1. dmesg_log
          56 kB
        2. dmesg.3369
          450 kB
        3. lustre-log.tgz
          1.65 MB

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-5726 MDS buffer not freed when deleting files

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

          Bug - A problem which impairs or prevents the functions of the product. LU-5503 MDS (2.4.2) are getting "Service thread ... inactive" and file-system times out

          • Major - Major loss of function.
          • Resolved

          Activity

            [LU-5333] rm cause MDS to complain hung tasks and disconnecting clients
            niu Niu Yawei (Inactive) made changes -
            Resolution New: Fixed [ 1 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            pjones Peter Jones made changes -
            End date New: 06/Feb/15
            Start date New: 11/Jul/14
            niu Niu Yawei (Inactive) made changes -
            Link New: This issue is related to LU-5503 [ LU-5503 ]
            niu Niu Yawei (Inactive) made changes -
            Link New: This issue is related to LU-5726 [ LU-5726 ]
            haisong Haisong Cai (Inactive) made changes -
            Attachment New: dmesg.3369 [ 16016 ]
            Attachment New: lustre-log.tgz [ 16017 ]
            pjones Peter Jones made changes -
            Assignee Original: WC Triage [ wc-triage ] New: Niu Yawei [ niu ]
            mdiep Minh Diep made changes -
            Affects Version/s New: Lustre 2.4.3 [ 10652 ]
            mdiep Minh Diep made changes -
            Labels New: sdsc
            haisong Haisong Cai (Inactive) created issue -

            People

              niu Niu Yawei (Inactive)
              haisong Haisong Cai (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: