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  1. Lustre
  2. LU-10938 Metadata writeback cache support
  3. LU-14123

WBC: better DNE support

Details

    • Technical task
    • Resolution: Unresolved
    • Minor
    • None
    • None
    • None
    • 9223372036854775807

    Description

      In the current design:

      All files under a root WBC directory are allocated with FIDs located on the same target (MDT).

      And also in current implementation, it does not support default LMV on the root WBC directory.

      The above design can simply the batched metadata update and recovery (no any dependency)

      TODO:

      In the future, files under a root WBC directory could be distributed across MDT targets other than the one which the root WBC directory located on. This could increase concurrency for metadata performance.

      Attachments

        Activity

          [LU-14123] WBC: better DNE support
          gerrit Gerrit Updater added a comment -

          "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47666
          Subject: LU-14123 wbc: delay to flush dmv for protected directory
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: e1c6e84cfc764235c7a2cf6cfebd5842d895d717

          gerrit Gerrit Updater added a comment - "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47666 Subject: LU-14123 wbc: delay to flush dmv for protected directory Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: e1c6e84cfc764235c7a2cf6cfebd5842d895d717
          gerrit Gerrit Updater added a comment -

          "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47648
          Subject: LU-14123 wbc: flush default mea at WBC lock revocation
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: a16bb8079c108c7586a1cd61d83cacdf9595e125

          gerrit Gerrit Updater added a comment - "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47648 Subject: LU-14123 wbc: flush default mea at WBC lock revocation Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: a16bb8079c108c7586a1cd61d83cacdf9595e125
          gerrit Gerrit Updater added a comment -

          "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47573
          Subject: LU-14123 wbc: set/clear default LMV EA on unflushed dir
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: 9a681157d22bfd28c743f1716e46aa28e5ccf01b

          gerrit Gerrit Updater added a comment - "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47573 Subject: LU-14123 wbc: set/clear default LMV EA on unflushed dir Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 9a681157d22bfd28c743f1716e46aa28e5ccf01b
          gerrit Gerrit Updater added a comment -

          "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47511
          Subject: LU-14123 wbc: set/delete default LMV EA under WBC
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: 14baf334e931581a01723006a68f417cf6d97587

          gerrit Gerrit Updater added a comment - "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47511 Subject: LU-14123 wbc: set/delete default LMV EA under WBC Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 14baf334e931581a01723006a68f417cf6d97587
          gerrit Gerrit Updater added a comment -

          "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47504
          Subject: LU-14123 wbc: obtain (default) LMV EA from lsm
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: e2ecb13bc4f8f523c5c1287b8a1b0919c7e648c3

          gerrit Gerrit Updater added a comment - "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47504 Subject: LU-14123 wbc: obtain (default) LMV EA from lsm Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: e2ecb13bc4f8f523c5c1287b8a1b0919c7e648c3
          gerrit Gerrit Updater added a comment -

          "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47481
          Subject: LU-14123 wbc: support default striped dir for WBC
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: 86317ce10cb51cef14cf9ad8b96dc5ada9fce8a9

          gerrit Gerrit Updater added a comment - "Yingjin Qian <qian@ddn.com>" uploaded a new patch: https://review.whamcloud.com/47481 Subject: LU-14123 wbc: support default striped dir for WBC Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 86317ce10cb51cef14cf9ad8b96dc5ada9fce8a9
          gerrit Gerrit Updater added a comment -

          Yingjin Qian (qian@ddn.com) uploaded a new patch: https://review.whamcloud.com/40557
          Subject: LU-14123 wbc: alloc fid on the target same with root WBC dir
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: 181a47a55d497fa7e8904e15ae291186950737cc

          gerrit Gerrit Updater added a comment - Yingjin Qian (qian@ddn.com) uploaded a new patch: https://review.whamcloud.com/40557 Subject: LU-14123 wbc: alloc fid on the target same with root WBC dir Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 181a47a55d497fa7e8904e15ae291186950737cc

          People

            qian_wc Qian Yingjin
            qian_wc Qian Yingjin
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            Dates

              Created:
              Updated: