這篇文章主要介紹 nova如何修改libvirt.xml及自定義xml文件修改nova代碼支持vhost ,文中介紹的非常詳細,具有一定的參考價值,感興趣的小伙伴們一定要看完!
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<interface type='bridge'>
<mac address='00:1a:4a:4d:63:a0'/>
<source bridge='sdcos-vmnet'/>
<model type='virtio'/>
<filterref filter='vdsm-no-mac-spoofing'/>
<link state='up'/>
<bandwidth>
</bandwidth>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
<driver name='qemu'/>
</interface>
<interface type="bridge">
<mac address="fa:16:3e:ea:69:50"/>
<model type="virtio"/>
<source bridge="qbr3bcc4870-b3"/>
<target dev="tap3bcc4870-b3"/>
<driver name='qemu'/> #加上此配置文件,則啟動的虛擬機參數(shù)中就會有vhost=off
</interface>
修改nova代碼支持:
def get_config(self, instance, vif, image_meta, inst_type): conf = vconfig.LibvirtConfigGuestInterface() # Default to letting libvirt / the hypervisor choose the model model = None driver = None # If the user has specified a 'vif_model' against the # image then honour that model if image_meta: vif_model = image_meta.get('properties', {}).get('hw_vif_model') if vif_model is not None: model = vif_model # Else if the virt type is KVM/QEMU, use virtio according # to the global config parameter if (model is None and CONF.libvirt.virt_type in ('kvm', 'qemu') and CONF.libvirt.use_virtio_for_bridges): model = "virtio" # Workaround libvirt bug, where it mistakenly # enables vhost mode, even for non-KVM guests if model == "virtio" and CONF.libvirt.virt_type == "qemu": driver = "qemu" |
修改為:
if model == "virtio" and CONF.libvirt.virt_type == "qemu": driver = "qemu" driver = "qemu"//增加此句,代表永遠為qemu
|
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文章名稱:nova如何修改libvirt.xml及自定義xml文件修改nova代碼支持vhost
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