红帽全球峰会3.6.4. 为磁盘配置客户机缓存
将磁盘设备配置为由客户机而不是主机执行缓存。
确保磁盘设备的 driver 元素包含 cache="none" 和 io="native" 参数。
<disk type="block" device="disk">
<driver name="qemu" type="raw" cache="none" io="native" iothread="1"/>
...
</disk>
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