<html><body><p><font size="2">Hi</font><br><br><font size="2">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><br><font size="2" color="#000080" face="Menlo-Regular">=== mmdiag: iohist ===</font><br><br><font size="2" color="#000080" face="Menlo-Regular">I/O history:</font><br><br><font size="2" color="#000080" face="Menlo-Regular"> I/O start time RW Buf type disk:sectorNum nSec time ms Type Device/NSD ID NSD node</font><br><font size="2" color="#000080" face="Menlo-Regular">--------------- -- ----------- ----------------- ----- ------- ---- ------------------ ---------------</font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.450177 R inode 6:189513568 8 4.920 srv dm-4 192.168.116.92</font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.450448 R inode 6:189513664 8 4.968 srv dm-4 192.168.116.92</font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.475689 R inode 6:189428264 8 0.230 srv dm-4 192.168.116.92</font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.983587 W logData 4:30686784 8 0.216 lcl dm-0 </font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.983601 W logData 3:25468480 8 0.197 lcl dm-8 </font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.983961 W inode 2:188808504 8 0.142 lcl dm-11 </font><br><font size="2" color="#000080" face="Menlo-Regular">01:14:08.984144 W inode 1:188808504 8 0.134 lcl dm-7 </font><font size="4" color="#00C200" face="Menlo-Regular"> </font><br><br><br><br><font size="2">Regards, The Spectrum Scale (GPFS) team<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 <a href="https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479">https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479</a>. <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><br>The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team.</font><br><br><img width="16" height="16" src="cid:1__=C7BB0840DFB6362A8f9e8a93df938690918cC7B@" border="0" alt="Inactive hide details for "Buterbaugh, Kevin L" ---07/11/2018 10:34:32 PM---Hi All, Quick question about “mmdiag —iohist” th"><font size="2" color="#424282">"Buterbaugh, Kevin L" ---07/11/2018 10:34:32 PM---Hi All, Quick question about “mmdiag —iohist” that is not documented in the man page … what does it</font><br><br><font size="2" color="#5F5F5F">From: </font><font size="2">"Buterbaugh, Kevin L" <Kevin.Buterbaugh@Vanderbilt.Edu></font><br><font size="2" color="#5F5F5F">To: </font><font size="2">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></font><br><font size="2" color="#5F5F5F">Date: </font><font size="2">07/11/2018 10:34 PM</font><br><font size="2" color="#5F5F5F">Subject: </font><font size="2">[gpfsug-discuss] mmdiag --iohist question</font><br><font size="2" color="#5F5F5F">Sent by: </font><font size="2">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr width="100%" size="2" align="left" noshade style="color:#8091A5; "><br><br><br>Hi All, <br><br>Quick question about “mmdiag —iohist” that is not documented in the man page … what does it mean if the client IP address field is blank? That the NSD server itself issued the I/O? Or ???<br><br>This only happens occasionally … and the way I discovered it was that our Python script that takes “mmdiag —iohist” 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 … and when I started looking at the “mmdiag —iohist” output itself I do see times when there is no client IP address listed for a I/O wait.<br><br>Thanks…<br><br>Kevin<br><br>—<br>Kevin Buterbaugh - Senior System Administrator<br>Vanderbilt University - Advanced Computing Center for Research and Education<br><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu"><u><font color="#0000FF">Kevin.Buterbaugh@vanderbilt.edu</font></u></a> - (615)875-9633<br><br><br><tt><font size="2">_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br></font></tt><tt><font size="2"><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a></font></tt><tt><font size="2"><br></font></tt><br><br><BR>
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