<div dir="ltr">Hi Clint,<div>See my comments inline<br><div><div><br></div><div>Regards,</div></div></div><div>Maor</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Nov 4, 2016 at 1:51 PM, Clint Boggio <span dir="ltr"><<a href="mailto:cboggio@inlinenetworks.com" target="_blank">cboggio@inlinenetworks.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Greetings OVirt Community<br>
<br>
I have a production system that started life as a OV 3.6 system, and I've recently upgraded the engine to 4.0. I see in the cluster config, a configuration element that indicates the cluster functionality level. It has a drop down that allows me to toggle between 3.6, and 4.0.<br>
<br>
If I select 4.0 and save, what potential problems could I expect ?<br>
<br>
Setup;<br>
<br>
1 Dedicated engine CentOS7 OV version 4<br>
<br>
6 hosts running CentOS7 and OV version 4.0 and 3.6 repos.<br></blockquote><div><div><br></div><div><div style="font-family:monospace">If your hosts are already EL7, you can take a look at the upgrade manager <a href="https://www.ovirt.org/develop/release-management/features/engine/upgrademanager/" target="_blank">https://www.ovirt.org/<wbr>develop/release-management/<wbr>features/engine/<wbr>upgrademanager/</a></div><div><font face="monospace">see also the following demo video:</font></div><div><font face="monospace"><a href="https://www.youtube.com/watch?v=fDzBNKu5pyQ&feature=youtu.be">https://www.youtube.com/watch?v=fDzBNKu5pyQ&feature=youtu.be</a></font><br></div><div style="font-family:monospace"><br></div><div style="font-family:monospace">Otherwise you'll have to reinstall hosts with EL7 one by one.</div><div style="font-family:monospace"><br></div><div style="font-family:monospace">After all the hosts were upgraded you simply need to change all your clusters' compatibility level to 4.0 and finally the Data Center's compatibility level to 4.0.</div></div><div style="font-family:monospace"><span style="font-family:arial,sans-serif"> </span><br></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
Main data domain is iscsi over IB.<br>
<br>
ISO and all other data domains are NFS over IB<br>
<br></blockquote><div style="font-family:monospace"><br></div><div style="font-family:monospace">Regarding your Storage Domains (ISO, NFS, iSCSI) there shoul not be any additional changes as far as I know since all of them will use the same version (V3) for engine 3.6 and 4.0.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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