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  1. Lustre
  2. LU-3300

Restore missing proc information for LMT

Details

    • Task
    • Resolution: Unresolved
    • Major
    • Lustre 2.4.0
    • Lustre 2.4.0
    • None
    • 8169

    Description

      Lustre's proc seems to have had a number of regressions. LMT's ltop is no longer able to find many of the values it used to display.

      In particular, brw_stats from obdfilter is gone, and does not appear to have been replaced after the OSD work. At minimum, that was used by ltop to report the number of bulk rpcs handled.

      The MDS display is also missing a number of values.

      We don't necessarily need to put them back exactly how they were before, but we need to export them in some way that will make them usable for folks.

      It would be best to decide on interfaces before 2.4.0 is locked in.

      Attachments

        Issue Links

          duplicates

          Improvement - An improvement or enhancement to an existing feature or task. LU-3106 create symlinks in procfs from ofd to osd

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-3355 proc regression testing

          • 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-2396 ofd brw_stats not maintained

          • 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-3296 fs/lustre/mdt/*/md_stats not showing any stats after remount

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

          Technical task - A technical task. LU-2096 name ofd device type "ofd" instead of "obdfilter"

          • Major - Major loss of function.
          • Open

          Technical task - A technical task. LU-4259 No brw_stats on ZFS

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Activity

            [LU-3300] Restore missing proc information for LMT
            pjones Peter Jones made changes -
            End date New: 29/Feb/16
            Start date New: 08/May/13
            emoly.liu Emoly Liu added a comment - - edited

            Chris, is there any more work you would like us to do for this ticket? Or can we mark it as resolved? Thanks.

            emoly.liu Emoly Liu added a comment - - edited Chris, is there any more work you would like us to do for this ticket? Or can we mark it as resolved? Thanks.
            simmonsja James A Simmons made changes -
            Link New: This issue is related to LU-4259 [ LU-4259 ]
            emoly.liu Emoly Liu added a comment -

            Chris, I add a symlink of osd brw_stats to lod. Hope that can meet your requirement.
            Please see http://review.whamcloud.com/7663 .

            emoly.liu Emoly Liu added a comment - Chris, I add a symlink of osd brw_stats to lod. Hope that can meet your requirement. Please see http://review.whamcloud.com/7663 .
            pjones Peter Jones made changes -
            Assignee Original: WC Triage [ wc-triage ] New: Emoly Liu [ emoly.liu ]
            pjones Peter Jones added a comment -

            Emoly

            Could you please see what work remains on this ticket?

            Thanks

            Peter

            pjones Peter Jones added a comment - Emoly Could you please see what work remains on this ticket? Thanks Peter
            jhammond John Hammond made changes -
            Assignee Original: John Hammond [ jhammond ] New: WC Triage [ wc-triage ]
            morrone Christopher Morrone (Inactive) added a comment -

            The problem that you fixed we hadn't even seen yet. We did then see it. Now we don't.

            So now brw_stats, or something equivalent just needs to be added, I believe.

            morrone Christopher Morrone (Inactive) added a comment - The problem that you fixed we hadn't even seen yet. We did then see it. Now we don't. So now brw_stats, or something equivalent just needs to be added, I believe.
            jhammond John Hammond added a comment -

            Chris, any updates here? We were waiting on a response from LLNL.

            jhammond John Hammond added a comment - Chris, any updates here? We were waiting on a response from LLNL.
            rread Robert Read added a comment -

            With that patch landed I'm getting metadata in LMT again, thanks! Still waiting to hear from LLNL...

            rread Robert Read added a comment - With that patch landed I'm getting metadata in LMT again, thanks! Still waiting to hear from LLNL...

            People

              emoly.liu Emoly Liu
              morrone Christopher Morrone (Inactive)
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              Dates

                Created:
                Updated: