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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Hello Nir,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Actually Ovirt3.5 host crashes even if the storage domain has been destroyed / removed from ovirt (hence ovirt has no knowledge of this storage and its mpath device and don’t
bother about it). But I guess this is what you refer to when you write about “handling of unmapped luns”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">However, now that I caught you online, could you confirm that deleting an entity ( storage domain) from Ovirt should release the sanlock?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">In other words: what is the supported way to delete an iscsi SAN volume?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">My current approach is:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Maintenance storage domain from ovirt4<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Detach+remove or just destroy storage domain from ovirt4<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Wait ~10 minutes<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">4)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Access SAN control panel and unmap+delete associated volume.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><span style="mso-list:Ignore">5)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Eventually, access every host server and remove mpath device manually (multipath -f <device ID>)
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">SAN is a DELL Compellent SC040<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">AG<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Nir Soffer [mailto:nsoffer@redhat.com]
<br>
<b>Sent:</b> Thursday, November 17, 2016 18:59<br>
<b>To:</b> Andrea Ghelardi <a.ghelardi@iontrading.com><br>
<b>Cc:</b> users@ovirt.org<br>
<b>Subject:</b> Re: [ovirt-users] [HELP] unmapping a deleted storage domain triggers crash ovirt<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Nov 17, 2016 at 5:48 PM, Andrea Ghelardi <<a href="mailto:a.ghelardi@iontrading.com" target="_blank">a.ghelardi@iontrading.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello again,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">However, Ovirt4 does not show this failure.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Handling of unmapped luns was fixed in 3.6.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The best way is to upgrade to 3.6, and then upgrade to 4, and I think this is also<o:p></o:p></p>
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<p class="MsoNormal">the only supported upgrade path.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">My current approach to move VMs from one installation to another is:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">1) Shutdown VM in ovirt3.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">2) Maintenance VM storage - do you mean the storage server?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">3) Clone VM storage at LUN level<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">4) Import cloned storage in ovirt4<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">5) Import VM in ovirt4<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">If everything is ok:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You must put the storage domain to maintenance here.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">Since we don't support yet removal of pv from a storage domain, you cannot<o:p></o:p></p>
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<div>
<p class="MsoNormal">remove a lun from a storage, you must remove the entire storage domain.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">6a) detach + remove original VM storage in ovirt3<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">8a) recover cluster; this implies shutting down host (and its VM) one by one<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">9a) delete unmapped original LUN from storage manager<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If sanlock freezed it means that you unmapped a lun that was used by sanlock.<o:p></o:p></p>
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<p class="MsoNormal">This is not supported.<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Cheers<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">AG<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> Andrea Ghelardi
<br>
<b>Sent:</b> Tuesday, November 08, 2016 16:40<br>
<b>To:</b> <a href="mailto:users@ovirt.org" target="_blank">users@ovirt.org</a><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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="IT">Hello people,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="IT"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">something’s not right in my ovirt infrastructure.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I currently have two different ovirt installation:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Ovirt3: 7 hosts linked to Compellent iscsi storage running ovirt 3.5.6<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Ovirt4: 4 hosts linked to (same) Compellent iscsi storage running ovirt 4.0.4<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’m currently moving my guests from ovirt3 to ovirt4.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Since iscsi storage is linked to both installations, my high level approach is:<o:p></o:p></p>
<p class="m4653260579189413946msolistparagraph">1)<span style="font-size:7.0pt">
</span>Shutdown VM in ovirt3.<o:p></o:p></p>
<p class="m4653260579189413946msolistparagraph">2)<span style="font-size:7.0pt">
</span>Maintenance + detach + remove VM storage in ovirt3<o:p></o:p></p>
<p class="m4653260579189413946msolistparagraph">3)<span style="font-size:7.0pt">
</span>Change LUN mapping via iscsi storage manager from ovirt3 to ovirt4<o:p></o:p></p>
<p class="m4653260579189413946msolistparagraph">4)<span style="font-size:7.0pt">
</span>Import storage in ovirt4<o:p></o:p></p>
<p class="m4653260579189413946msolistparagraph">5)<span style="font-size:7.0pt">
</span>Import VM in ovirt4<o:p></o:p></p>
<p class="m4653260579189413946msolistparagraph">6)<span style="font-size:7.0pt">
</span>Run and cheers with high grade liquor. GOTO step 1 for different VM.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I tried different low level approaches to unmap LUN mpath’ed from hosts with inconsistent results.
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">A notable error log extract is:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">/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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">/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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">-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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Why mapping changes triggers ovirt crash on a storage which ovirt should not care about?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="IT" style="font-size:9.0pt;font-family:ION;color:black">Andrea Ghelardi</span></b><o:p></o:p></p>
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