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

openstack 虚机迁移 nova-compute报错：Unacceptable CPU info: CPU doesn't have compatibility
1 b* S  s* D# B& [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']
: n& |& a0 t0 |& H7 o        #     self._compare_cpu(None, source_cpu_info, instance)
        # else:
% q) j- j* Z; A/ v* l7 y# |        #     self._compare_cpu(instance.vcpu_model, None, instance)
: I3 g1 s) Z& L[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
% t4 l; w+ m- A# C! [
/ N# u" X: O: e" V$ ~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。
! f8 a$ A+ }3 P4 U! V
3 C3 X# I5 T4 i# Compare CPU

#        if not instance.vcpu_model or not instance.vcpu_model.model:
" Z4 Q2 L( R5 x9 v9 A0 c
#            source_cpu_info = src_compute_info['cpu_info']
% M! I9 L, [- P3 t! a
#            self._compare_cpu(None, source_cpu_info)
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" {: A* M+ V0 D6 W8 C# ~#        else:

7 Q4 [6 O1 I  ^6 P#            self._compare_cpu(instance.vcpu_model, None)