2 GB Size Limit - Which File?

[ebmgithub]

Does the 2 GB size limit apply to the Path (source) file or the Destination (.zip) file ?

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Document Details

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• ID: 1e67ee59-8a3e-59ad-7c8d-a78605f55b66
• Version Independent ID: 3c8b8ee9-6a97-4eda-d184-49e728abf0a6
• Content: Compress-Archive (Microsoft.PowerShell.Archive)
• Content Source: reference/6/Microsoft.PowerShell.Archive/Compress-Archive.md
• Product: powershell
• Technology: powershell-cmdlets
• GitHub Login: @anmenaga
• Microsoft Alias: anmenaga

[chasewilson]

@ebmgithub Thanks for the question. The limit is on the source file. The .NET API has a limitation on the file stream size to the compression.

Does this answer your question?

[chasewilson]

Closing this issue for now. Feel free to reach out with any questions and concerns

[KalleOlaviNiemitalo]

Confirmed that Compress-Archive on a 64-bit PowerShell 7.0.0-rc.2 is able to create a 6 GB zip file from many small files, but fails if a single input file is that large, regardless of whether -CompressionLevel NoCompression is used.

MethodInvocationException: C:\program files\powershell\7-preview\Modules\Microsoft.PowerShell.Archive\Microsoft.PowerShell.Archive.psm1:845
Line |
 845 |  …                     $destStream.Write($buffer, 0, $numberOfBytesRead)
     |                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Exception calling "Write" with "3" argument(s): "Stream was too long."

A request to remove this limitation has been filed at PowerShell/Microsoft.PowerShell.Archive#19.