红帽全球峰会3.6.5. 排除内存气球（Balloon）设备
除非您需要动态内存大小，否则请不要定义内存气球设备，并确保 libvirt 不会为您创建。将 memballoon 参数作为设备元素的子项包含在您的域配置 XML 文件中。
检查活跃配置集列表：
<memballoon model="none"/>
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