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On 9/2/2019 10:40 PM, Wesley Peng wrote:
>> We can migrate the vm from compute102 to compute101 Successfully．
>> compute101 to compute102 ERROR info: the CPU is incompatible with host 
>> CPU: Host CPU does not provide required features: f16c, rdrand, 
>> fsgsbase, smep, erms
>>
>>
> 
> The error has said, cpu of compute101 is lower than compute102, some 
> incompatible issues happened. To live migrate, you'd better have all 
> hosts with the same hardwares, including cpu/mem/disk etc

[1] and [2] may be helpful.

[1] 
https://www.openstack.org/videos/summits/berlin-2018/effective-virtual-cpu-configuration-in-nova
[2] 
https://docs.openstack.org/nova/latest/admin/configuration/hypervisor-kvm.html#specify-the-cpu-model-of-kvm-guests

-- 

Thanks,

Matt