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
解决方法：
- {. g3 u! X- j7 c: ?+ }# l[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
/ e. ~9 Y* J. }8 L; m2 [- }        # if not instance.vcpu_model or not instance.vcpu_model.model:
4 K0 X  U& R/ Y/ N5 [. |        #     source_cpu_info = src_compute_info['cpu_info']
        #     self._compare_cpu(None, source_cpu_info, instance)
. e6 j1 a* T4 K& b0 |        # else:
6 Y' L' ]) M9 Q- c3 d5 Z        #     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
; W# _' j3 a- P
# o. A7 e) a6 _& w$ X! f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。
1 w; y& l' a- j4 w4 G3 w
" ^4 i' x1 n) ~: W8 ^# Compare CPU

$ J( k$ u: e. Z, R% u#        if not instance.vcpu_model or not instance.vcpu_model.model:

& a1 t$ [( ^  i* H% W/ a#            source_cpu_info = src_compute_info['cpu_info']
: h' L4 n4 F# H/ O# ]  p
' U! O" ?+ v4 b#            self._compare_cpu(None, source_cpu_info)

" _+ ~- g( _8 M4 r/ }2 M2 @#        else:

#            self._compare_cpu(instance.vcpu_model, None)
$ A1 R/ [0 `. J% L