Unreal容器内Zen Server存储不足，请求定位占用满的卷/目录

架构老林

2026-6-14

问题描述

我在Kubernetes上使用官方dev-slim-5.5镜像以Docker容器形式运行Unreal 5.5。出于安全考虑，我将文件系统设置为只读，并挂载以下卷到Unreal目录用于写入数据：

/tmp 挂载为emptyDir
/home/ue4/.config/Epic 挂载为3GB的PVC
/home/ue4/app/Unreal/Projects/Test/Project/Saved 挂载为200MB的PVC
/home/ue4/app/Unreal/Projects/Test/Project/DerivedDataCache/VT 挂载为emptyDir
/home/ue4/UnrealEngine/Engine/Binaries/ThirdParty/USD/UsdResources/Linux/plugins 挂载为5GB的PVC
/home/ue4/app/Unreal/Projects/Test/Project/Intermediate/PipInstall 挂载为2GB的PVC

启动Unreal并导入文件后，我收到多条如下错误信息：

2025-02-04T15:52:19.047Z [log]: stdout: [2025.02.04-15.52.19:034][ 0]LogDerivedDataCache: Display: ZenLocal: Error response received from PutCacheValues RPC: from POST http://[::1]:8558//z$/$rpc -> 507
2025-02-04T15:52:19.510Z [log]: stdout: [2025.02.04-15.52.19:510][0]LogDerivedDataCache: Display: ZenLocal: Error response received from PutCacheValues RPC: from POST http://[::1]:8558//z$/$rpc -> 507
2025-02-04T15:52:25.730Z [log]: stdout: [2025.02.04-15.52.25:729][0]LogStaticMesh: Display: Building static mesh product-0efae793-589e-4e1f-ac35-7a05ddbc4373-body (Required Memory Estimate: 5.133849 MB)...
2025-02-04T15:52:26.013Z [log]: stdout: [2025.02.04-15.52.26:012][0]LogDerivedDataCache: Display: ZenLocal: Error response received from PutCacheRecords RPC: from POST http://[::1]:8558//z$/$rpc -> 507

请问哪个目录/卷存储空间不足？

解答

HTTP 507状态码代表存储空间不足，结合日志里的LogDerivedDataCache和ZenLocal关键字，问题出在Unreal的衍生数据缓存（DDC）存储上。

你当前仅挂载了/home/ue4/app/Unreal/Projects/Test/Project/DerivedDataCache/VT作为可写卷，但ZenLocal本地DDC服务的默认存储路径是/home/ue4/.cache/UnrealEngine/Common/DerivedDataCache——这个路径未挂载可写卷，且根文件系统为只读状态，导致无法写入缓存数据，触发507错误。

解决方向：

为/home/ue4/.cache/UnrealEngine/Common/DerivedDataCache挂载足够容量的PVC或emptyDir
或通过Unreal引擎配置（如DefaultEngine.ini）修改ZenLocal的DDC存储路径到已挂载的可写卷（比如已有的DerivedDataCache/VT目录）

内容的提问来源于stack exchange，提问作者TRS