无法使用装载卷在WSL中构建.Net核心

Question

描述错误

我正在使用VS代码，WSL和.net核心3.0预览来构建一个示例web API项目在WSL中存储在C驱动器中。但是它抛出了一个异常和一个奇怪的错误。

"/mnt/c/temp/test/test.csproj" (default target) (1:7) ->
                   (_CreateAppHost target) ->
                     /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018: The "CreateAppHost" task failed unexpectedly. [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018: System.IO.IOException: Invalid argument [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at System.IO.MemoryMappedFiles.MemoryMappedView.CreateView(SafeMemoryMappedFileHandle memMappedFileHandle, MemoryMappedFileAccess access, Int64 requestedOffset, Int64 requestedSize) [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at System.IO.MemoryMappedFiles.MemoryMappedFile.CreateViewAccessor(Int64 offset, Int64 size, MemoryMappedFileAccess access) [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.NET.HostModel.AppHost.HostWriter.<>c__DisplayClass2_0.<CreateAppHost>g__RewriteAppHost|0() [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.NET.HostModel.RetryUtil.RetryOnIOError(Action func) [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.NET.HostModel.AppHost.HostWriter.CreateAppHost(String appHostSourceFilePath, String appHostDestinationFilePath, String appBinaryFilePath, Boolean windowsGraphicalUserInterface, String assemblyToCopyResorcesFrom) [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.NET.Build.Tasks.CreateAppHost.ExecuteCore() in /_/src/Tasks/Microsoft.NET.Build.Tasks/CreateAppHost.cs:line 68 [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.NET.Build.Tasks.TaskBase.Execute() in /_/src/Tasks/Common/TaskBase.cs:line 38 [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [/mnt/c/temp/test/test.csproj]
                   /usr/share/dotnet/sdk/3.0.100-preview9-014004/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(370,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [/mnt/c/temp/test/test.csproj]

重现

重现行为的步骤: 1.在Window 10和Ws1上使用此版本的ASP.NET核心'3.0.100-preview9‘2.在Window 10 + cd c:\temp + dotnet new webapi 3.转到ws1，(/mnt/c/temp) 3.运行dotnet build 4.请参阅错误

预期行为

成功运行"dotnet build“，可以从VSCode运行/调试WSL中的应用程序。

Answer 1

在Windows10上WSL2下全新安装的Ubuntu (20.04)上设置dotnet在运行dotnet build时，我遇到了上面的The "CreateAppHost" task failed unexpectedly.错误以及一堆与文件系统相关的权限错误--然而sudo dotnet build工作得很好……

我的解决方案是关闭/重新启动所有正在运行的WSL实例，在windows命令提示符下列出所有正在运行的实例；

C:\> wsl -l --running
Windows Subsystem for Linux Distributions:
docker-desktop-data (Default)
Ubuntu
docker-desktop

然后关闭你想要用于dotnet的运行中的；

C:\> wsl --terminate Ubuntu

然后重新运行/重新启动发行版；

C:\> wsl -d Ubuntu

然后，魔术般的dotnet build可以在没有sudo的情况下工作，也可以通过vscode WSL远程插件工作。希望这个简单的“重启解决方案”能帮助其他人！