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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Hi Eric<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Looks like your assumption is correct - no negative values from \u201cmmfsadm eventsExporter mmpmon vfss\u201d. I don\u2019t normally view these via \u201cmmfsadm\u201d, I use the zimon stats. But, It\u2019s a bug that
should be fixed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">What\u2019s the best way to get this fixed?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">root@cnt-r01r07u15 ~]# mmfsadm eventsExporter mmpmon vfss<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">_response_ begin mmpmon vfss<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">_mmpmon::vfss_ _n_ 10.30.100.193 _nn_ cnt-r01r07u15 _rc_ 0 _t_ 1492647309 _tu_ 311964 _access_ 8472897 56529.874886 _close_ 1460223848 49854.938090 _create_ 2101927 155055.515041 _fclear_
0 0.000000 _fsync_ 20 0.024288 _fsync_range_ 0 0.000000 _ftrunc_ 0 0.000000 _getattr_ 859626332 101183.720281 _link_ 2175473 625.343799 _lockctl_ 17326 5.229828 _lookup_ 200378610 1201985.264220 _map_lloff_ 220854519 8561.860515 _mkdir_ 817943 217390.170859
_mknod_ 3 0.001422 _open_ 1460217712 134812.649162 _read_ 3883163461 3971457.463527 _write_ 186078410 137927.496812 _mmapRead_ 17108947 10665.929860 _mmapWrite_ 0 0.000000 _aioRead_ 0 0.000000 _aioWrite_ 0 0.000000 _readdir_ 142262897 6999.189450 _readlink_
485337171 2111.634286 _readpage_ 3646233600 14346.331414 _remove_ 4241324 93277.463798 _rename_ 350679 19334.235924 _rmdir_ 342042 2736.048976 _setacl_ 0 0.000000 _setattr_ 3709289 16963.901179 _symlink_ 161336 8522.670079 _unmap_ 3929805828 1735.740690 _writepage_
0 0.000000 _tsfattr_ 0 0.000000 _tsfsattr_ 0 0.000000 _flock_ 0 0.000000 _setxattr_ 119 0.001042 _getxattr_ 4077218348 628418.213008 _listxattr_ 0 0.000000 _removexattr_ 15 0.000042 _encode_fh_ 0 0.000000 _decode_fh_ 0 0.000000 _get_dentry_ 0 0.000000 _get_parent_
0 0.000000 _mount_ 0 0.000000 _statfs_ 2625497 214.309671 _sync_ 0 0.000000 _vget_ 0 0.000000<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">_response_ end<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Bob Oesterlin<br>
Sr Principal Storage Engineer, Nuance<br>
507-269-0413<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span>
</b><span style="font-family:Calibri;color:black"><gpfsug-discuss-bounces@spectrumscale.org> on behalf of IBM Spectrum Scale <scale@us.ibm.com><br>
<b>Reply-To: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Date: </b>Wednesday, April 19, 2017 at 7:10 PM<br>
<b>To: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Cc: </b>"gpfsug-discuss-bounces@spectrumscale.org" <gpfsug-discuss-bounces@spectrumscale.org><br>
<b>Subject: </b>[EXTERNAL] Re: [gpfsug-discuss] mmfsadm dump vfsstats - negative values<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"sans-serif","serif"">Bob,</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif"">I also noticed this recently. I think it may be a simple matter of a printf()-like statement in the code that handles "mmfsadm vfsstats" using an incorrect conversion specifier --- one that treats
the counter as signed instead of unsigned and treats the counter as being smaller than it really is.</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif"">To help confirm that hypothesis, could you please run the following commands on the node, at the same time, so the output can be compared:</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif""># mmfsadm vfsstats</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif""># mmfsadm eventsExporter mmpmon vfss</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif"">I believe the code that handles "mmfsadm eventsExporter mmpmon vfss" uses the correct printf()-like conversion specifier. So, it should so good numbers where "mmfsadm vfsstats" shows negative
numbers.</span> <br>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif"">Regards, The Spectrum Scale (GPFS) team</span>
<br>
<span style="font-size:10.0pt;font-family:"sans-serif","serif"">Eric Agar<br>
<br>
------------------------------------------------------------------------------------------------------------------<br>
If you feel that your question can benefit other users of Spectrum Scale (GPFS), then please post it to the public IBM developerWroks Forum at
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<br>
<br>
If your query concerns a potential software error in Spectrum Scale (GPFS) and you have an IBM software maintenance contract please contact 1-800-237-5511 in the United States or your local IBM Service Center in other countries.
<br>
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The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team.</span>
<br>
<br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"sans-serif","serif";color:#5F5F5F">From: </span><span style="font-size:7.5pt;font-family:"sans-serif","serif"">"Oesterlin, Robert" <Robert.Oesterlin@nuance.com></span>
<br>
<span style="font-size:7.5pt;font-family:"sans-serif","serif";color:#5F5F5F">To: </span><span style="font-size:7.5pt;font-family:"sans-serif","serif"">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></span>
<br>
<span style="font-size:7.5pt;font-family:"sans-serif","serif";color:#5F5F5F">Date: </span><span style="font-size:7.5pt;font-family:"sans-serif","serif"">04/19/2017 07:16 PM</span>
<br>
<span style="font-size:7.5pt;font-family:"sans-serif","serif";color:#5F5F5F">Subject: </span><span style="font-size:7.5pt;font-family:"sans-serif","serif"">[gpfsug-discuss] mmfsadm dump vfsstats - negative values</span>
<br>
<span style="font-size:7.5pt;font-family:"sans-serif","serif";color:#5F5F5F">Sent by: </span><span style="font-size:7.5pt;font-family:"sans-serif","serif"">gpfsug-discuss-bounces@spectrumscale.org</span>
<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<br>
<span style="font-size:10.0pt;font-family:Calibri">I assume the counter has wrapped on some of these - would a PMR fix this? (4.2.1)</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri"> </span> <br>
<span style="font-size:10.0pt;font-family:Calibri">[root@cnt-r01r07u15 ~]# mmfsadm vfsstats</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">vfs statistics currently enabled</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">started at: Fri Jan 27 16:22:02.702 2017</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri"> duration: 7091405.800 sec</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri"> </span> <br>
<span style="font-size:10.0pt;font-family:Calibri">name calls time per call total time</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">-------------------- -------- -------------- --------------</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">access 8472691 0.006672 56529.863993</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">close 1460175509 0.000034 49854.695358</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">create 2101110 0.073797 155055.263775</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">fsync 20 0.001214 0.024288</span>
<br>
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<br>
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<br>
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<br>
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<br>
<span style="font-size:10.0pt;font-family:Calibri">map_lloff 220850355 0.000039 8561.791963</span>
<br>
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<br>
<span style="font-size:10.0pt;font-family:Calibri">mknod 3 0.000474 0.001422</span>
<br>
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<br>
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<br>
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<br>
<span style="font-size:10.0pt;font-family:Calibri">mmapRead 17108252 0.000623 10665.877349</span>
<br>
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<br>
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<br>
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<br>
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<br>
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<br>
<span style="font-size:10.0pt;font-family:Calibri">rmdir 342019 0.008000 2736.037074</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">setattr 3709237 0.004573 16963.899331</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">symlink 160610 0.053061 8522.185175</span>
<br>
<b><span style="font-size:10.0pt;font-family:Calibri">unmap -365476297 0.000000 1735.669373</span></b>
<br>
<span style="font-size:10.0pt;font-family:Calibri">setxattr 119 0.000009 0.001042</span>
<br>
<b><span style="font-size:10.0pt;font-family:Calibri">getxattr -218316996 0.000154 628416.355002</span></b>
<br>
<span style="font-size:10.0pt;font-family:Calibri">removexattr 15 0.000003 0.000042</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">statfs 2624067 0.000082 214.306646</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">fastOpen 1456944934 0.000000 0.000000</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">fastClose 1515612004 0.000000 0.000000</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">fastLookup 77981387 0.000000 0.000000</span>
<br>
<b><span style="font-size:10.0pt;font-family:Calibri">fastRead -922882405 0.000000 0.000000</span></b>
<br>
<span style="font-size:10.0pt;font-family:Calibri">fastWrite 102606402 0.000000 0.000000</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">revalidate 899677 0.000000 0.000000</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri">aio write sync 21331080 0.000061 1309.773528</span>
<br>
<span style="font-size:10.0pt;font-family:Calibri"> </span> <br>
<span style="font-size:10.0pt;font-family:Calibri">Bob Oesterlin<br>
Sr Principal Storage Engineer, Nuance<br>
507-269-0413</span> <br>
<br>
<span style="font-family:Calibri"> </span><tt><span style="font-size:10.0pt">_______________________________________________</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
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