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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><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>