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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">Tomas,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">Since the restart is not actually required in my case, what if I set compatibility version in the DB directly to make the engine happy?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">I have no plans to restart my VMs in this year. And I don’t want to block online updating of VM parameters by the “next run configuration”.
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span>
</b><span style="font-family:Calibri;color:black">Tomas Jelinek <tjelinek@redhat.com><br>
<b>Date: </b>Monday, 12 June 2017 at 16:42<br>
<b>To: </b>Pavel Gashev <Pax@acronis.com><br>
<b>Cc: </b>James <james@jloh.co>, users <users@ovirt.org><br>
<b>Subject: </b>Re: [ovirt-users] Migrating oVirt cluster from 4.0 to 4.1<o:p></o:p></span></p>
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<p class="MsoNormal">On Mon, Jun 12, 2017 at 2:12 PM, Pavel Gashev <<a href="mailto:Pax@acronis.com" target="_blank">Pax@acronis.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"><span style="font-size:11.0pt;font-family:Calibri">Can I update VMs compatibility version without restarting VMs?</span><o:p></o:p></p>
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<p class="MsoNormal">yes, but it will be applied only after restart. <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"><span style="font-size:11.0pt;font-family:Calibri"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:Calibri">According to the source code, restarting is required during upgrading to 4.1 only if a VM uses random generator device. If it
doesn’t, a restart is not really required.</span><o:p></o:p></p>
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<p class="MsoNormal">right, but the VM will still be marked with this "next run configuration" and will be set to have the old compatibility version.<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"><span style="font-size:11.0pt;font-family:Calibri"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-family:Calibri;color:black">From:
</span></b><span style="font-family:Calibri;color:black"><<a href="mailto:users-bounces@ovirt.org" target="_blank">users-bounces@ovirt.org</a>> on behalf of Tomas Jelinek <<a href="mailto:tjelinek@redhat.com" target="_blank">tjelinek@redhat.com</a>><br>
<b>Date: </b>Monday, 12 June 2017 at 14:15<br>
<b>To: </b>James <<a href="mailto:james@jloh.co" target="_blank">james@jloh.co</a>><br>
<b>Cc: </b>users <<a href="mailto:users@ovirt.org" target="_blank">users@ovirt.org</a>><br>
<b>Subject: </b>Re: [ovirt-users] Migrating oVirt cluster from 4.0 to 4.1</span><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>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Mon, Jun 12, 2017 at 12:17 PM, James <<a href="mailto:james@jloh.co" target="_blank">james@jloh.co</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">We recently moved our oVirt cluster from 4.0 to 4.1 and have migrated<br>
all the hosts. The datacenter currently has a compatability setting of<br>
4.1 but the cluster is still on 4.0. As cross-cluster migrations has<br>
been removed (no option anymore?) we aren't 100% sure how to get the<br>
cluster onto 4.1 whilst keeping the VMs online. Do we just change the<br>
compatibility version live and it "just works" or do we have to have<br>
downtime?<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>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">yes, you just change the compatibility version. The VMs which are down will be automatically updated and work with the new cluster, the running ones will be marked with a "triangle"
icon and will be automatically updated on restart of them.<o:p></o:p></p>
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Any info would be great!<br>
<br>
Regards,<br>
James<br>
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