On 10/26/2016 06:07 AM, William Josefsson wrote:
Hi list,

I'm facing issues on Liberty/CentOS7 doing live migrations between to
hosts. The hosts are Haswell and Broadwell. However, there is not
feature specific running on my VMs

Haswell -> Broadwell works
Broadwell -> Haswell fails with the error below.


I have on both hosts configured
[libvirt]
cpu_mode=none

and restarted openstack-nova-compute on hosts, however that didn't
help, with the same error. there gotta be a way of ignoring this
check? pls advice. thx will

If you are using kvm/qemu and set cpu_mode=none, then it will use 'host-model', and any instances started on Broadwell can't be live-migrated onto Haswell.

In your case you probably want to set both computes to have:
        
[libvirt]
cpu_mode = custom
cpu_model = Haswell

This will cause nova to start guests with the "Haswell" model on both nodes.

Chris

_______________________________________________
OpenStack-operators mailing list
[email protected]
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators

Reply via email to