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  1. Lustre
  2. LU-9683

Negative value reported for req_waittime mdt stat

Details

    • Bug
    • Resolution: Fixed
    • Minor
    • Lustre 2.10.1, Lustre 2.11.0
    • Lustre 2.9.0
    • None
    • 3
    • 9223372036854775807

    Description

      On creating a lustre filesystem (in IML automated test) with lustre version 2.9.58_86_g2383a62, the following was reported indicating a negative value for req_waittime stat (causing IML to not report the stat):

      [root@lotus-58vm16 ~]# less /proc/fs/lustre/mds/MDS/mdt/stats
snapshot_time             1497888436.757961280 secs.nsecs
req_waittime              54892 samples [usec] -8497 0 -4659765 1053607811
req_qdepth                54892 samples [reqs] 0 0 0 0
req_active                54892 samples [reqs] 1 1 54892 54892
req_timeout               54892 samples [sec] 1 10 54910 55090
reqbuf_avail              150546 samples [bufs] 63 64 9634690 616604158
ldlm_ibits_enqueue        13 samples [reqs] 1 1 13 13
mds_reint_setattr         1 samples [reqs] 1 1 1 1
mds_reint_open            8 samples [reqs] 1 1 8 8
mds_getattr               1 samples [usec] 44 44 44 1936
mds_connect               5 samples [usec] 27 16179 22451 297791095
mds_get_root              1 samples [usec] 15 15 15 225
mds_statfs                1 samples [usec] 26 26 26 676
mds_getxattr              2 samples [usec] 31 3259 3290 10622042
obd_ping                  54868 samples [usec] 12 548 2165145 95976761

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-17853 Negative value reported in req_waittime mdt

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-9019 Migrate lustre to standard 64 bit time kernel API

          • Major - Major loss of function.
          • Resolved

          Activity

            [LU-9683] Negative value reported for req_waittime mdt stat
            gerrit Gerrit Updater added a comment -

            John L. Hammond (john.hammond@intel.com) merged in patch https://review.whamcloud.com/28290/
            Subject: LU-9683 ptlrpc: fix argument misorder
            Project: fs/lustre-release
            Branch: b2_10
            Current Patch Set:
            Commit: 907f35db14e5b796bc4d722e16dc206d759e4a9a

            gerrit Gerrit Updater added a comment - John L. Hammond (john.hammond@intel.com) merged in patch https://review.whamcloud.com/28290/ Subject: LU-9683 ptlrpc: fix argument misorder Project: fs/lustre-release Branch: b2_10 Current Patch Set: Commit: 907f35db14e5b796bc4d722e16dc206d759e4a9a
            gerrit Gerrit Updater added a comment -

            James Simmons (uja.ornl@yahoo.com) uploaded a new patch: https://review.whamcloud.com/28290
            Subject: LU-9683 ptlrpc: fix argument misorder
            Project: fs/lustre-release
            Branch: b2_10
            Current Patch Set: 1
            Commit: dde04af12cddd05e5414184f428a303b911b40a9

            gerrit Gerrit Updater added a comment - James Simmons (uja.ornl@yahoo.com) uploaded a new patch: https://review.whamcloud.com/28290 Subject: LU-9683 ptlrpc: fix argument misorder Project: fs/lustre-release Branch: b2_10 Current Patch Set: 1 Commit: dde04af12cddd05e5414184f428a303b911b40a9
            pjones Peter Jones added a comment -

            Landed for 2.11

            pjones Peter Jones added a comment - Landed for 2.11
            gerrit Gerrit Updater added a comment -

            Oleg Drokin (oleg.drokin@intel.com) merged in patch https://review.whamcloud.com/28027/
            Subject: LU-9683 ptlrpc: fix argument misorder
            Project: fs/lustre-release
            Branch: master
            Current Patch Set:
            Commit: 61c48e79fdfb825ea1ab2649cdadaccfb863155c

            gerrit Gerrit Updater added a comment - Oleg Drokin (oleg.drokin@intel.com) merged in patch https://review.whamcloud.com/28027/ Subject: LU-9683 ptlrpc: fix argument misorder Project: fs/lustre-release Branch: master Current Patch Set: Commit: 61c48e79fdfb825ea1ab2649cdadaccfb863155c
            bzzz Alex Zhuravlev added a comment -

            https://review.whamcloud.com/#/c/28027/

            bzzz Alex Zhuravlev added a comment - https://review.whamcloud.com/#/c/28027/
            simmonsja James A Simmons added a comment -

            I can take a look at this when I port the code to 64 bit time handling

            simmonsja James A Simmons added a comment - I can take a look at this when I port the code to 64 bit time handling

            People

              simmonsja James A Simmons
              tanabarr Tom Nabarro (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: