Unacceptable CPU info: CPU doesn't have compatibilityOpenStack生产环境不同型号CPU迁移校验解决

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Unacceptable CPU info: CPU doesn't have compatibility

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openstack 虚机迁移 nova-compute报错：Unacceptable CPU info: CPU doesn't have compatibility
解决方法：
[root@compute02 ~]# vim /usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py +6050

函数：check_can_live_migrate_destination

屏蔽代码，避免CPU校验：

        # Compare CPU
! v: E* A$ T, m  ?        # if not instance.vcpu_model or not instance.vcpu_model.model:
        #     source_cpu_info = src_compute_info['cpu_info']
! v" L6 ^- T( M( v7 x9 ~: y7 q        #     self._compare_cpu(None, source_cpu_info, instance)
        # else:
        #     self._compare_cpu(instance.vcpu_model, None, instance)
[root@compute02 ~]# systemctl restart openstack-nova-compute.service

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故障现象：虚拟机在不同类型CPU的服务器间热迁移时报错：InvalidCPUInfo: Unacceptable CPU info: CPU doesn't have compatibility
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3 E9 c- ]$ U8 |7 v5 m" o3 q故障原因：nova默认使用CPU的一些特性，热迁移时对CPU对比要求较高

解决办法：1、修改/etc/nova/nova.conf文件，cpu_mode=None；2、修改代码/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py，把driver.py文件中cpu对比的代码注释掉；3、已经创建的虚拟机，要硬重启，重新生成xml配置文件。

# Compare CPU

" c2 X0 D9 \. m, W* I& Q0 u3 J0 G#        if not instance.vcpu_model or not instance.vcpu_model.model:
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( o3 h6 j: \( r7 R3 P4 y) ~) l#            source_cpu_info = src_compute_info['cpu_info']

#            self._compare_cpu(None, source_cpu_info)
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#        else:

#            self._compare_cpu(instance.vcpu_model, None)
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