Windows long paths support

[JamieMagee]

Description

When attempting to checkout https://github.com/Azure/azure-sdk-for-net into a subdirectory on a Windows 2019 based runner I receive many error messages like the following:

error: unable to create file sdk/cognitiveservices/Microsoft.Azure.Management.CognitiveServices/tests/SessionRecords/CognitiveServices.Tests.CognitiveServicesAccountTests/CognitiveServicesAccountCreateAllApisTest.json: Filename too long

Please enable long paths support when building Windows images

New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" -Name "LongPathsEnabled" -Value 1 -PropertyType DWORD -Force

Virtual environments affected

• Ubuntu 18.04
• Ubuntu 20.04
• macOS 10.15
• macOS 11
• Windows Server 2016
• Windows Server 2019
• Windows Server 2022

Image version and build link

Environment: windows-2019
Version: 20220116.1

https://github.com/microsoft/component-detection/runs/4874590492?check_suite_focus=true

Is it regression?

No

Expected behavior

No response

Actual behavior

No response

Repro steps

1. Try and check out a repository to a path with more than 260 characters ¹

Footnotes

1. https://docs.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation ↩

[al-cheb]

Hey, @JamieMagee
LongPathsEnabled is enabled - https://github.com/actions/virtual-environments/blob/a64db791f32ffe355d7397c1ac896d42686e9dfa/images/win/scripts/Installers/Initialize-VM.ps1#L70

- name: Check LongPathsEnabled
  run: |
           (Get-ItemProperty "HKLM:System\CurrentControlSet\Control\FileSystem").LongPathsEnabled

[JamieMagee]

Interesting! After some more searching, it might be a configuration issue with git¹. Is it possible to set a git config default for the image?

git config --system core.longpaths true

Footnotes

1. https://stackoverflow.com/a/22575737 ↩

[al-cheb]

Interesting! After some more searching, it might be a configuration issue with git1. Is it possible to set a git config default for the image?

git config --system core.longpaths true

Footnotes

1. https://stackoverflow.com/a/22575737 ↩

I will take a look at it.

As a workaround set this flag in runtime:

 - name: Set git core.longpaths flag
        run: |
            git config --system core.longpaths true
      - name: Clone verification repo (nuget/azure-sdk-for-net)
        uses: actions/checkout@v2.3.2
        with:
          repository: Azure/azure-sdk-for-net
          path: verification/projects/nuget
          ref: 1bf85a0ae26d1453e190dd2323fed43f560e9837

[al-cheb]

@JamieMagee , We have decided not to set up this option at the system level - #4915 (comment) due to impact to customers.