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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Well, thinking about it, the only conclusion that I can honestly make after this instrumentation is that $id_prefix is effectively incorrect when entering fence_peer_init() and doesn’t permit to remove the fence rule then, but in no case fence_peer_init() seems faulty, it just does what he has to with the parameter he’s given.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Back to the starting point…<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>To keep investigating further and may be save some time, does anybody know where id_prefix value is set up ? within DRBD code itself I guess ? If it’s the DRBD code that manages resync, it’s probably also it that can trigger cleanup actions afterwards, right ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>In any case, I have to work a bit more before bothering you guys, especially when my config is a good mess at the moment, being only partially updated, one foot in a version, the other in another. Plus, I just have identified that my resource agents are not exactly the same version on both nodes, the rest of the cluster stack being identical. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>If someone has any advice or idea, he’s welcome!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Pascal.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> drbd-user-bounces@lists.linbit.com [mailto:drbd-user-bounces@lists.linbit.com] <b>De la part de</b> Pascal BERTON<br><b>Envoyé :</b> dimanche 24 février 2013 11:24<br><b>À :</b> drbd-user@lists.linbit.com<br><b>Objet :</b> [DRBD-user] drbd 8.3.15 - crm_fence_peer.sh - problem in fence_peer_init()<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Guys,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I’m currently updating a Pacemaker+drbd+scst cluster from drbd-8.3.12 to drbd-8.3.15, and I found something odd regarding unfencing. Basic symptom is that unfencing does nothing, cluster logs report unfencing had been done, but in reality nothing has occurred.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>For instance here’s the rule I’ve got in my CIB after volume teardown :<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>location drbd-fence-by-handler-ms-rdmVDR ms-rdmVDR \<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'> rule $id="drbd-fence-by-handler-rule-ms-rdmVDR" $role="Master" -inf: #uname ne ipstore21<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Now, I have instrumented the </span><span lang=EN-US style='font-family:"Courier New"'>fence_peer_init()</span><span lang=EN-US> function within </span><span lang=EN-US style='font-family:"Courier New"'>crm_fence_peer.sh</span><span lang=EN-US> script as follows :<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>fence_peer_init()<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>{<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'> # we know which instance we are: $OCF_RESOURCE_INSTANCE.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>…<o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-family:"Courier New";color:#0070C0'>echo "fence_peer_init() :" >> /var/log/unfence.log<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-family:"Courier New";color:#0070C0'>echo "===== $id_prefix =====" >> /var/log/unfence.log<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-family:"Courier New";color:#0070C0'>echo "===== $master_id =====" >> /var/log/unfence.log<o:p></o:p></span></b></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'> have_constraint=$(set +x; echo "$cib_xml" |<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'> sed_rsc_location_suitable_for_string_compare "$id_prefix-$master_id")<o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-family:"Courier New";color:#0070C0'>echo "===== $have_constraint =====" >> /var/log/unfence.log<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-family:"Courier New";color:#0070C0'>echo "End of fence_peer_init()" >> /var/log/unfence.log<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-family:"Courier New";color:#0070C0'>echo >> /var/log/unfence.log<o:p></o:p></span></b></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'> return 0<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>When resync finishes, here’s what I get in my logfile :<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>fence_peer_init() :<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>===== drbd-fence-by-handler-rdmVDR =====<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>===== ms-rdmVDR =====<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>===== =====<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New"'>End of fence_peer_init()<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>As a result, it searches a location rule named </span><span lang=EN-US style='font-family:"Courier New"'>drbd-fence-by-handler-rdmVDR-ms-rdmVDR</span><span lang=EN-US> for deletion that effectively doesn’t exists in the CIB and </span><span lang=EN-US style='font-family:"Courier New"'>have_constraint</span><span lang=EN-US> returns empty…<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I’ve compared to 8.3.12 version of the script which used to work, and there seems to have some changes…<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I will unfence by hand in the meantime but I think it requires some fix, right ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Pascal.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>