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It means that you have CPUs with incompatible flags or you've got differing kernel versions that expose different flags or you've got differing libvirt versions that expose different flags. You either need to use a lowest common denominator cpu_model or do
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Karera Tony <tonykarera@gmail.com><br>
<b>Sent:</b> 01 September 2023 10:13<br>
<b>To:</b> openstack-discuss <openstack-discuss@lists.openstack.org><br>
<b>Subject:</b> Live migration error</font>
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<div class="x_caution" style="background-color:#F47F53; font-family:sans-serif"><span style="font-size:14pt"><strong>CAUTION:</strong></span>
<span style="font-size:11pt; font-weight:400">This email originates from outside THG</span>
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Hello Team,<br clear="all">
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<div class="x_gmail_default" style="font-size:small; color:#444444">I am trying to migrate instances from one host to another but I am getting this error.</div>
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<strong style="box-sizing:border-box">Error: </strong>Failed to live migrate instance to host "compute1". <a href="http://10.10.13.31/admin/instances/#message_details" class="x_gmail-" style="box-sizing:border-box; background-color:transparent; color:rgb(66,139,202); text-decoration-line:none">Details</a></p>
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Migration pre-check error: Unacceptable CPU info: CPU doesn't have compatibility. 0 Refer to
<a href="http://libvirt.org/html/libvirt-libvirt-host.html#virCPUCompareResult">
http://libvirt.org/html/libvirt-libvirt-host.html#virCPUCompareResult</a> (HTTP 400) (Request-ID: req-9dfdfe2e-70fa-481a-bd3d-c2c76a6e93da)</div>
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Any idea on how to fix this?</div>
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<div><font face="arial, sans-serif">Regards</font></div>
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<div dir="ltr"><font face="arial, sans-serif">Tony Karera</font></div>
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