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使用 ontap-san 在 OpenShift 中上传 qcow2 镜像失败，权限被拒绝

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适用于

  • NetApp Trident 26.x（ontap-san 驱动程序）
  • OpenShift 虚拟化（KubeVirt / CDI）
  • 具有光纤通道或 iSCSI 后端的 ONTAP（ontap-san）

问题

  • 使用 Trident ontap-san StorageClass 在 OpenShift Virtualization 中上传 qcow2 或 ISO 镜像以创建可引导卷时，上传失败并出现以下错误：
Saving stream failed: Unable to transfer source data to scratch space: could not open file "/scratch/tmpimage": open /scratch/tmpimage: permission denied
  • 在 CDI 上传 Pod 中运行写入测试可确认此问题：
oc exec -n <namespace><cdi-upload-pod> -- touch /scratch/test
touch: cannot touch '/scratch/test': Permission denied
  • /scratch 目录以 root:root 挂载，权限为 drwxr-xr-x，导致非 root CDI 上传 Pod 无法写入该目录。
  • 使用基于 NFS 的 StorageClass 时，相同的上传操作可以成功。

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