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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">I\u2019m puzzled about the difference between the two mmhealth events<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black">longwaiters_found ERROR Detected Spectrum Scale long-waiters</span><span style="font-size:10.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">and<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">deadlock_detected WARNING The cluster detected a Spectrum Scale filesystem deadlock<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">Especially why the later has level WARNING only while the first has level ERROR? Longwaiters_found is based on the output of \u2018mmdiag \u2013deadlock\u2019 and occurs much more often on our clusters, while
the later probably is triggered by an external event and no internal mmsysmon check? Deadlock detection is handled by mmfsd? Whenever a deadlock is detected some debug data is collected, which is not true for longwaiters_detected. Hm, so why is no deadlock
detected whenever mmdiag \u2013deadlock shows waiting threads? Shouldn\u2019t the severity be the opposite way?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">Finally: Can we trigger some debug data collection whenever a longwaiters_found event happens \u2013 just getting the output of \u2018mmdiag \u2013deadlock\u2019 on the single node could give some hints. Without
I don\u2019t see any real chance to take any action.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">Heiner</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="DE-CH">-- <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">=======================</span><span lang="DE-CH" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">Heinrich Billich</span><span lang="DE-CH" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">ETH Zürich</span><span lang="DE-CH" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">Informatikdienste</span><span lang="DE-CH" style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">Tel.: +41 44 632 72 56</span><span lang="DE-CH" style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">heinrich.billich@id.ethz.ch</span><span lang="DE-CH" style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#18376A">========================</span><span lang="DE-CH" style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="DE-CH" style="font-size:10.0pt"><o:p> </o:p></span></p>
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