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
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3 {" j6 h. U2 m2 D! A; R1 ]) H[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; j( N. ~$ M# k" k+ c        # 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)
' \/ a8 S* z# O' d! _        # else:
2 a; a9 |3 h/ g0 |1 u* C% ^        #     self._compare_cpu(instance.vcpu_model, None, instance)
6 ~" Q5 T! @1 f* [$ p& b[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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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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$ h6 r  i2 [' ~' U  ~* E3 w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。

- f' p9 G4 |9 b, S1 ]2 n# 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)
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#        else:

#            self._compare_cpu(instance.vcpu_model, None)