## 问题描述在使用Ubuntu 16.04、18.04操作系统的DUP云服务器（例如[通用型g3i/g3a](https://www.volcengine.com/docs/6396/68527)、[计算型c3i/c3a](https://www.volcengine.com/docs/6396/68528)、[内存型r3i/r3a](https://www.volcengine.com/docs/6396/68529)等）上挂载云盘后，实例内无法识别新挂载的云盘。 ![图片](https://portal.volccdn.com/obj/volcfe/cloud-universal-doc/upload_d3f9ad31a71c324bc14395950d1a2399.png =806x) ![图片](https://portal.volccdn.com/obj/volcfe/cloud-universal-doc/upload_a83d3bcfa6858cf5f940017d3d22d4ca.png =534x) ## 问题原因可能是由于您的操作系统中缺少/etc/udev/rules.d/72\-virtio.rules文件及配置，导致DPU架构的实例无法识别新挂载的云盘。 ## 解决方案您需要在操作系统中新增/etc/udev/rules.d/72\-virtio.rules文件及配置。 1. [登录目标实例](https://www.volcengine.com/docs/6396/67747)。 2. 执行如下命令，确认/etc/udev/rules.d/72\-virtio.rules文件是否存在。 ```Plain Text find /etc/udev/rules.d/ -name "72-virtio.rules" ``` 回显如下所示时，表示您的操作系统中缺少/etc/udev/rules.d/72\-virtio.rules文件，请按后续步骤完成修复。否则，建议您[提交工单](https://console.volcengine.com/workorder/create)获取技术支持。 ![图片](https://portal.volccdn.com/obj/volcfe/cloud-universal-doc/upload_0cd81e49b3579985fe5d2d540718345a.png =627x) 3. 新建/etc/udev/rules.d/72\-virtio.rules文件。 1. 执行如下命令，新建/etc/udev/rules.d/72\-virtio.rules文件。 ```Plain Text touch /etc/udev/rules.d/72-virtio.rules ``` 2. 执行如下命令，修改Virtio驱动配置。 ```Plain Text cat < /etc/udev/rules.d/72-virtio.rules ACTION=="add" \ , ATTRS{device}=="0x1042" \ , ATTRS{vendor}=="0x1af4" \ , SUBSYSTEM=="virtio" \ , RUN+="/etc/initramfs-tools/scripts/init-premount/rebind.sh" ACTION=="add" \ , ATTRS{device}=="0x1041" \ , ATTRS{vendor}=="0x1af4" \ , SUBSYSTEM=="virtio" \ , RUN+="/etc/initramfs-tools/scripts/init-premount/rebind.sh" ACTION=="add" \ , ATTRS{device}=="0x1001" \ , ATTRS{vendor}=="0x1af4" \ , SUBSYSTEM=="virtio" \ , RUN+="/etc/initramfs-tools/scripts/init-premount/rebind.sh" ACTION=="add" \ , ATTRS{device}=="0x1000" \ , ATTRS{vendor}=="0x1af4" \ , SUBSYSTEM=="virtio" \ , RUN+="/etc/initramfs-tools/scripts/init-premount/rebind.sh" EOF ``` 4. 在控制台[卸载](https://www.volcengine.com/docs/6396/67789)未识别的云盘后，重新将其[挂载](https://www.volcengine.com/docs/6396/67788)。 ![图片](https://portal.volccdn.com/obj/volcfe/cloud-universal-doc/upload_b1b9e6791729df24927e9634615d8628.png =576x) 5. 在实例中执行`lsblk`命令，验证新挂载的云盘是否可以正常识别。回显如下所示时，表示可以正常识别新挂载的云盘。 ![图片](https://portal.volccdn.com/obj/volcfe/cloud-universal-doc/upload_b311543233aa6140de0cf96303dd2b88.png =596x)