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
        # if not instance.vcpu_model or not instance.vcpu_model.model:
        #     source_cpu_info = src_compute_info['cpu_info']
        #     self._compare_cpu(None, source_cpu_info, instance)
% N# t9 W! @: k6 E" Q. W, g, B. L        # else:
7 u* h$ Q- M# a; T1 ^2 g8 u        #     self._compare_cpu(instance.vcpu_model, None, instance)
- x- f% D, E' n+ S$ W[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

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
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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。

) i5 p3 b# P8 c& ?: ]# Compare CPU

#        if not instance.vcpu_model or not instance.vcpu_model.model:
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, t2 t5 ^& o, Z( A9 v7 C" t4 x#            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)