<div dir="ltr">Hi Liu, <div><br></div><div>If you created a new neutron database and used you're existing nova database you would definitely lose the network interfaces on the nova-compute side if you rebooted your instances. You should use the original database and perform a db migration to upgrade to havana: see: <a href="https://github.com/openstack/neutron/tree/master/neutron/db/migration">https://github.com/openstack/neutron/tree/master/neutron/db/migration</a> </div>
<div><br></div><div>A possible other work around would be to use nova's interface-attach to add interfaces to your existing vms that you've already spinned up. </div><div><br></div><div>Aaron</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Sat, Nov 9, 2013 at 7:56 AM, Liu Wenmao <span dir="ltr"><<a href="mailto:marvelliu@gmail.com" target="_blank">marvelliu@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><br><div class="gmail_quote"><div dir="ltr"><div>hi all:</div><div> </div><div>I recently upgrade openstack grizzly to havana, I have a lot of trouble when upgrading quantum to neutron. So I create a blank neutron database and use the original nova database.</div>
<div> </div><div>But when I login the website, I find that every VM has no ip or network interface(only loopback interface), so I create a port for a VM, but after I reboot the VM( or even reboot physical node ), the VM vid does not appear.</div>
<div> </div><div>So how can I add the original interface to the existing VM, please? It is really a big problem for me, some data is still in those VMs.</div><div> </div><div>Thansk in advanced.</div><span class="HOEnZb"><font color="#888888"><span><font color="#888888"><div>
</div><div>Liu Wenmao</div>
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