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  1. Lustre
  2. LU-8683

readahead: update ras window correctly

Details

    • Bug
    • Resolution: Fixed
    • Minor
    • Lustre 2.9.0
    • Lustre 2.9.0
    • None
    • 3
    • 9223372036854775807

    Description

      When stride-RA hit case miss, we only reset normal sequential read-ahead window, but not reset the stride IO to avoid the overhead of re-detecting stride IO. While when the normal RA window is set to not insect with the stride-RA window, when we try to increase the stride-RA window length later, the presumption does not hold.

      This patch resets the stride IO as well in this case.

      Attachments

        Activity

          [LU-8683] readahead: update ras window correctly
          mdiep Minh Diep made changes -
          Link New: This issue is related to JFC-20 [ JFC-20 ]
          mdiep Minh Diep made changes -
          Link Original: This issue is duplicated by JFC-17 [ JFC-17 ]
          mdiep Minh Diep made changes -
          Link New: This issue is duplicated by JFC-17 [ JFC-17 ]
          mdiep Minh Diep made changes -
          Link New: This issue duplicates DELL-111 [ DELL-111 ]
          pjones Peter Jones made changes -
          Fix Version/s New: Lustre 2.9.0 [ 11891 ]
          Resolution New: Fixed [ 1 ]
          Status Original: Open [ 1 ] New: Resolved [ 5 ]
          pjones Peter Jones added a comment -

          Landed for 2.9

          pjones Peter Jones added a comment - Landed for 2.9
          gerrit Gerrit Updater added a comment -

          Oleg Drokin (oleg.drokin@intel.com) merged in patch http://review.whamcloud.com/23032/
          Subject: LU-8683 readahead: update ras window correctly
          Project: fs/lustre-release
          Branch: master
          Current Patch Set:
          Commit: 9c4b9ba2a32343bb8fae774db4edd7cf2ef9e852

          gerrit Gerrit Updater added a comment - Oleg Drokin (oleg.drokin@intel.com) merged in patch http://review.whamcloud.com/23032/ Subject: LU-8683 readahead: update ras window correctly Project: fs/lustre-release Branch: master Current Patch Set: Commit: 9c4b9ba2a32343bb8fae774db4edd7cf2ef9e852
          pjones Peter Jones made changes -
          Summary Original: land LDEV-255 (readahead: update ras window correctly) New: readahead: update ras window correctly
          bobijam Zhenyu Xu made changes -
          Assignee Original: WC Triage [ wc-triage ] New: Zhenyu Xu [ bobijam ]
          bobijam Zhenyu Xu made changes -
          Link New: This issue is related to LDEV-255 [ LDEV-255 ]

          People

            bobijam Zhenyu Xu
            bobijam Zhenyu Xu
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            Dates

              Created:
              Updated:
              Resolved: