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Hi GPFS team,
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<div class="">Yes, that\u2019s what we see, too \u2026 thanks.</div>
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<div class="">Kevin</div>
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<div class="">\u2014</div>
<div class="">Kevin Buterbaugh - Senior System Administrator</div>
<div class="">Vanderbilt University - Advanced Computing Center for Research and Education</div>
<div class=""><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu" class="">Kevin.Buterbaugh@vanderbilt.edu</a> - (615)875-9633</div>
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<div class="">On Jul 23, 2018, at 1:51 AM, IBM Spectrum Scale <<a href="mailto:scale@us.ibm.com" class="">scale@us.ibm.com</a>> wrote:</div>
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<p class=""><font size="2" class="">Hi</font><br class="">
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<font size="2" class="">Please check the IO type before examining the IP address for the output of mmdiag --iohist. For the "lcl"(local) IO, the IP address is not necessary and we don't show it. Please check whether this is your case.</font><br class="">
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<font size="2" color="#000080" face="Menlo-Regular" class="">=== mmdiag: iohist ===</font><br class="">
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<font size="2" color="#000080" face="Menlo-Regular" class="">I/O history:</font><br class="">
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<font size="2" color="#000080" face="Menlo-Regular" class="">I/O start time RW Buf type disk:sectorNum nSec time ms Type Device/NSD ID NSD node</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">--------------- -- ----------- ----------------- ----- ------- ---- ------------------ ---------------</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.450177 R inode 6:189513568 8 4.920 srv dm-4 192.168.116.92</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.450448 R inode 6:189513664 8 4.968 srv dm-4 192.168.116.92</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.475689 R inode 6:189428264 8 0.230 srv dm-4 192.168.116.92</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.983587 W logData 4:30686784 8 0.216 lcl dm-0
</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.983601 W logData 3:25468480 8 0.197 lcl dm-8
</font><br class="">
<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.983961 W inode 2:188808504 8 0.142 lcl dm-11
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<font size="2" color="#000080" face="Menlo-Regular" class="">01:14:08.984144 W inode 1:188808504 8 0.134 lcl dm-7
</font><font size="4" color="#00C200" face="Menlo-Regular" class=""></font><br class="">
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<font size="2" class="">Regards, The Spectrum Scale (GPFS) team<br class="">
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<span id="cid:1__=C7BB0840DFB6362A8f9e8a93df938690918cC7B@"><graycol.gif></span><font size="2" color="#424282" class="">"Buterbaugh, Kevin L" ---07/11/2018 10:34:32 PM---Hi All, Quick question about \u201cmmdiag \u2014iohist\u201d that is not documented in the man page \u2026
what does it</font><br class="">
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<font size="2" color="#5F5F5F" class="">From: </font><font size="2" class="">"Buterbaugh, Kevin L" <<a href="mailto:Kevin.Buterbaugh@Vanderbilt.Edu" class="">Kevin.Buterbaugh@Vanderbilt.Edu</a>></font><br class="">
<font size="2" color="#5F5F5F" class="">To: </font><font size="2" class="">gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org" class="">gpfsug-discuss@spectrumscale.org</a>></font><br class="">
<font size="2" color="#5F5F5F" class="">Date: </font><font size="2" class="">07/11/2018 10:34 PM</font><br class="">
<font size="2" color="#5F5F5F" class="">Subject: </font><font size="2" class="">[gpfsug-discuss] mmdiag --iohist question</font><br class="">
<font size="2" color="#5F5F5F" class="">Sent by: </font><font size="2" class=""><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org" class="">gpfsug-discuss-bounces@spectrumscale.org</a></font><br class="">
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Hi All, <br class="">
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Quick question about \u201cmmdiag \u2014iohist\u201d that is not documented in the man page \u2026 what does it mean if the client IP address field is blank? That the NSD server itself issued the I/O? Or ???<br class="">
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This only happens occasionally \u2026 and the way I discovered it was that our Python script that takes \u201cmmdiag \u2014iohist\u201d output, looks up the client IP for any waits above the threshold, converts that to a hostname, and queries SLURM for whose jobs are on that client
started occasionally throwing an exception \u2026 and when I started looking at the \u201cmmdiag \u2014iohist\u201d output itself I do see times when there is no client IP address listed for a I/O wait.<br class="">
<br class="">
Thanks\u2026<br class="">
<br class="">
Kevin<br class="">
<br class="">
\u2014<br class="">
Kevin Buterbaugh - Senior System Administrator<br class="">
Vanderbilt University - Advanced Computing Center for Research and Education<br class="">
<a href="mailto:Kevin.Buterbaugh@vanderbilt.edu" class=""><u class=""><font color="#0000FF" class="">Kevin.Buterbaugh@vanderbilt.edu</font></u></a> - (615)875-9633<br class="">
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