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  1. Lustre
  2. LU-14762

qos subdirectory creation stay on parent MDT if less full than average doesn't work as expected

Details

    • Bug
    • Resolution: Fixed
    • Minor
    • Lustre 2.15.0
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      In "space balanced" subdirectory creation, subdirectories are kept on the parent MDT if it is less full than average, but it use "weight" other than space, however

      weight = free space - penalty

      if MDTs have different penalties, it will make this inaccurate.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. LU-14659 sanity test_413a: subdirs shouldn't be evenly distributed

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

          Bug - A problem which impairs or prevents the functions of the product. LU-13439 DNE3: MDT QOS tuning to avoid full MDTs completely

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-13440 DNE3: limit directory default layout inheritance

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-15850 MDT QOS should always be used for round-robin directories.

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

          Activity

            [LU-14762] qos subdirectory creation stay on parent MDT if less full than average doesn't work as expected
            pjones Peter Jones added a comment -

            Landed for 2.15

            pjones Peter Jones added a comment - Landed for 2.15
            gerrit Gerrit Updater added a comment -

            Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/43997/
            Subject: LU-14762 lmv: compare space to mkdir on parent MDT
            Project: fs/lustre-release
            Branch: master
            Current Patch Set:
            Commit: 002c2a80266b23c1df02d554fbdc7e5817c42d13

            gerrit Gerrit Updater added a comment - Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/43997/ Subject: LU-14762 lmv: compare space to mkdir on parent MDT Project: fs/lustre-release Branch: master Current Patch Set: Commit: 002c2a80266b23c1df02d554fbdc7e5817c42d13
            gerrit Gerrit Updater added a comment -

            Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/43997
            Subject: LU-14762 lmv: compare space to mkdir on parent MDT
            Project: fs/lustre-release
            Branch: master
            Current Patch Set: 1
            Commit: 40a045257b26fbf460216bc875bf2801a8528d70

            gerrit Gerrit Updater added a comment - Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/43997 Subject: LU-14762 lmv: compare space to mkdir on parent MDT Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 40a045257b26fbf460216bc875bf2801a8528d70

            People

              laisiyao Lai Siyao
              laisiyao Lai Siyao
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              Dates

                Created:
                Updated:
                Resolved: