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  1. Lustre
  2. LU-18498

change HSM locking for llog operations

Details

    • Bug
    • Resolution: Unresolved
    • Major
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      HSM using cdt->cdt_lock semaphore, for llog processing, at ctd_llog_process(). Oppositely, llog using internal locking mechanism to prevent reading/writing concurrent access. It looks like HSM upper locking is useless. Let's improve this part.

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        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. LU-18201 HSM coordinator causes cdt_llog_lock starvation

          • Major - Major loss of function.
          • In Progress

          Activity

            [LU-18498] change HSM locking for llog operations
            gerrit Gerrit Updater added a comment -

            "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/57197/
            Subject: LU-18498 hsm: don't lock llog at cdt
            Project: fs/lustre-release
            Branch: master
            Current Patch Set:
            Commit: e4869bc72c4b5ba59a5dc5e47b7c1a638eae394e

            gerrit Gerrit Updater added a comment - "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/57197/ Subject: LU-18498 hsm: don't lock llog at cdt Project: fs/lustre-release Branch: master Current Patch Set: Commit: e4869bc72c4b5ba59a5dc5e47b7c1a638eae394e
            gerrit Gerrit Updater added a comment -

            "Etienne AUJAMES <eaujames@ddn.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57396
            Subject: LU-18498 hsm: optimize mdt_agent_record_update()
            Project: fs/lustre-release
            Branch: master
            Current Patch Set: 1
            Commit: e64ba3edc7bbcd92f2c16f1912a36b4d4485cf10

            gerrit Gerrit Updater added a comment - "Etienne AUJAMES <eaujames@ddn.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57396 Subject: LU-18498 hsm: optimize mdt_agent_record_update() Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: e64ba3edc7bbcd92f2c16f1912a36b4d4485cf10
            gerrit Gerrit Updater added a comment -

            "Alexander Boyko <alexander.boyko@hpe.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57197
            Subject: LU-18498 hsm: don't lock llog at cdt
            Project: fs/lustre-release
            Branch: master
            Current Patch Set: 1
            Commit: c1b0790e15de8f78f8a263ba504a815e72ebcf1b

            gerrit Gerrit Updater added a comment - "Alexander Boyko <alexander.boyko@hpe.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57197 Subject: LU-18498 hsm: don't lock llog at cdt Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: c1b0790e15de8f78f8a263ba504a815e72ebcf1b

            People

              aboyko Alexander Boyko
              aboyko Alexander Boyko
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              Dates

                Created:
                Updated: