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  1. Lustre
  2. LU-10176 Data-on-MDT phase II
  3. LU-10181

DoM performance optimization

Details

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

    Description

      Various optimization for better DoM performance. So far they are:

      • glimpse ahead. Issue glimpse from MDT in advance and return size on client along with other attributes.
      • read-on-open. Read file data at OPEN and return to the client
      • lock bits convert instead of cancel. It is separate ticket because it is useful for all files, not just DoM.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-13136 (layout.c:2121:__req_capsule_get()) @@@ Wrong buffer for field 'niobuf_inline' (7 of 7) in format 'LDLM_INTENT_OPEN', 0 vs. 0 (server)

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-18987 Strange LASSERT in mdt_dom_read_on_open()

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          New Feature - A new feature of the product, which has yet to be developed. LU-3285 Data on MDT

          • Major - Major loss of function.
          • Resolved

          Activity

            [LU-10181] DoM performance optimization
            green Oleg Drokin made changes -
            Link New: This issue is related to LU-18987 [ LU-18987 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-13136 [ LU-13136 ]
            pjones Peter Jones made changes -
            Resolution New: Fixed [ 1 ]
            Status Original: In Progress [ 3 ] New: Resolved [ 5 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Fix Version/s New: Lustre 2.12.0 [ 13495 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Fix Version/s Original: Lustre 2.12.0 [ 13495 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Fix Version/s New: Lustre 2.12.0 [ 13495 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Labels Original: DoM New: DoM DoM2
            tappro Mikhail Pershin made changes -
            Description Original: Various optimization for better DoM performance. So far they are:
             * glimpse ahead. Issue glimpse from MDT in advance and return size on client along with other attributes.
             * read-on-open. Read file data at OPEN and return to the client
             * lock bits convert instead of cancel. It is separate ticket because it is useful for all files, nit just DoM.             		New: Various optimization for better DoM performance. So far they are:
             * glimpse ahead. Issue glimpse from MDT in advance and return size on client along with other attributes.
             * read-on-open. Read file data at OPEN and return to the client
             * lock bits convert instead of cancel. It is separate ticket because it is useful for all files, not just DoM.
            tappro Mikhail Pershin made changes -
            Attachment New: DoM_lock_use_cases.pdf [ 28821 ]
            tappro Mikhail Pershin made changes -
            Attachment Original: tappro-UsecasesforDOMlockretrieving-011217-1800-1480.pdf [ 28820 ]

            People

              tappro Mikhail Pershin
              tappro Mikhail Pershin
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              Dates

                Created:
                Updated:
                Resolved: