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<p class="MsoNormal">Hello again,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Just to provide an update for future reference, I’ve been unable to sort this problem out.<o:p></o:p></p>
<p class="MsoNormal">However, Ovirt4 does not show this failure.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My current approach to move VMs from one installation to another is:<o:p></o:p></p>
<p class="MsoNormal">1) Shutdown VM in ovirt3.<o:p></o:p></p>
<p class="MsoNormal">2) Maintenance VM storage<o:p></o:p></p>
<p class="MsoNormal">3) Clone VM storage at LUN level<o:p></o:p></p>
<p class="MsoNormal">4) Import cloned storage in ovirt4<o:p></o:p></p>
<p class="MsoNormal">5) Import VM in ovirt4<o:p></o:p></p>
<p class="MsoNormal">If everything is ok: <o:p></o:p></p>
<p class="MsoNormal">6a) detach + remove original VM storage in ovirt3<o:p></o:p></p>
<p class="MsoNormal">7a) remove mappings for original VM storage LUN in ovirt3; this imply cluster instability (sanlock crash on hosts);
<o:p></o:p></p>
<p class="MsoNormal">8a) recover cluster; this implies shutting down host (and its VM) one by one<o:p></o:p></p>
<p class="MsoNormal">9a) delete unmapped original LUN from storage manager<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When Sanlock freeze on host, the only solution found so far is to reboot it. This has to be done on all host experiencing this problem (which basically means: all hosts in the cluster)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers<o:p></o:p></p>
<p class="MsoNormal">AG<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Andrea Ghelardi <br>
<b>Sent:</b> Tuesday, November 08, 2016 16:40<br>
<b>To:</b> users@ovirt.org<br>
<b>Subject:</b> [HELP] unmapping a deleted storage domain triggers crash ovirt<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="IT">Hello people,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="IT"><o:p> </o:p></span></p>
<p class="MsoNormal">something’s not right in my ovirt infrastructure.<o:p></o:p></p>
<p class="MsoNormal">I currently have two different ovirt installation:<o:p></o:p></p>
<p class="MsoNormal">Ovirt3: 7 hosts linked to Compellent iscsi storage running ovirt 3.5.6<o:p></o:p></p>
<p class="MsoNormal">Ovirt4: 4 hosts linked to (same) Compellent iscsi storage running ovirt 4.0.4<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m currently moving my guests from ovirt3 to ovirt4.<o:p></o:p></p>
<p class="MsoNormal">Since iscsi storage is linked to both installations, my high level approach is:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Shutdown VM in ovirt3.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Maintenance + detach + remove VM storage in ovirt3<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Change LUN mapping via iscsi storage manager from ovirt3 to ovirt4<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">4)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Import storage in ovirt4<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">5)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Import VM in ovirt4<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">6)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Run and cheers with high grade liquor. GOTO step 1 for different VM.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now, as soon as I perform step 3 (remove mappings from LUN), ovirt3 goes crazy and eventually forces me to reboot all hosts one by one.<o:p></o:p></p>
<p class="MsoNormal">I tried different low level approaches to unmap LUN mpath’ed from hosts with inconsistent results.
<o:p></o:p></p>
<p class="MsoNormal">A notable error log extract is:<o:p></o:p></p>
<p class="MsoNormal">Nov 8 15:30:52 sovana vdsm root ERROR Process failed with rc=1 out='\nudevadm settle - timeout of 5 seconds reached, the event queue contains:\n /sys/devices/virtual/block/dm-39 (8603)\n /sys/devices/virtual/block/dm-39 (8604)\n /sys<o:p></o:p></p>
<p class="MsoNormal">/devices/virtual/block/dm-39 (8605)\n /sys/devices/virtual/block/dm-39 (8606)\n /sys/devices/virtual/block/dm-39 (8607)\n /sys/devices/virtual/block/dm-39 (8608)\n /sys/devices/virtual/block/dm-39 (8609)\n /sys/devices/virtual/block<o:p></o:p></p>
<p class="MsoNormal">/dm-39 (8610)\n /sys/devices/virtual/block/dm-39 (8611)\n /sys/devices/virtual/block/dm-39 (8612)\n /sys/devices/virtual/block/dm-39 (8613)\n /sys/devices/virtual/block/dm-39 (8614)\n /sys/devices/virtual/block/dm-39 (8615)\n /sys/<o:p></o:p></p>
<p class="MsoNormal">devices/virtual/block/dm-39 (8616)\n /sys/devices/virtual/block/dm-39 (8617)\n /sys/devices/virtual/block/dm-39 (8618)\n /sys/devices/virtual/block/dm-39 (8619)\n /sys/devices/virtual/block/dm-39 (8620)\n /sys/devices/virtual/block/<o:p></o:p></p>
<p class="MsoNormal">dm-39 (8621)\n /sys/devices/virtual/block/dm-39 (8622)\n /sys/devices/virtual/block/dm-39 (8623)\n /sys/devices/virtual/block/dm-39 (8624)\n /sys/devices/virtual/block/dm-39 (8625)\n /sys/devices/virtual/block/dm-39 (8626)\n /sys/d<o:p></o:p></p>
<p class="MsoNormal">evices/virtual/block/dm-39 (8627)\n /sys/devices/virtual/block/dm-39 (8628)\n /sys/devices/virtual/block/dm-39 (8629)\n /sys/devices/virtual/block/dm-39 (8630)\n /sys/devices/virtual/block/dm-39 (8631)\n /sys/devices/virtual/block/d<o:p></o:p></p>
<p class="MsoNormal">m-39 (8632)\n /sys/devices/virtual/block/dm-39 (8633)\n /sys/devices/virtual/block/dm-39 (8634)\n /sys/devices/virtual/block/dm-39 (8635)\n /sys/devices/virtual/block/dm-39 (8636)\n /sys/devices/virtual/block/dm-39 (8637)\n /sys/de<o:p></o:p></p>
<p class="MsoNormal">vices/virtual/block/dm-39 (8638)\n /sys/devices/virtual/block/dm-39 (8639)\n /sys/devices/virtual/block/dm-39 (8640)\n /sys/devices/virtual/block/dm-39 (8641)\n /sys/devices/virtual/block/dm-39 (8642)\n /sys/devices/virtual/block/dm<o:p></o:p></p>
<p class="MsoNormal">-39 (8643)\n /sys/devices/virtual/block/dm-39 (8644)\n /sys/devices/virtual/block/dm-39 (8645)\n /sys/devices/virtual/block/dm-39 (8646)\n /sys/devices/virtual/block/d<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I really need your help to sort this out as I’m actually blocked in my task.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Why mapping changes triggers ovirt crash on a storage which ovirt should not care about?<o:p></o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="IT" style="font-size:9.0pt;font-family:ION;color:black">Andrea Ghelardi<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="IT" style="font-size:8.0pt;font-family:"Source Sans Pro",sans-serif;color:gray"><o:p> </o:p></span></p>
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