Here is my PowerShell solution to copy large files into small chunks
I know this may not suits you but it can help you out in case of copying large files via PowerShell as small chunks. So in our case we had 500MB pptx files too which we just uploaded to SP Online from On-Prem without any problem. Currently we used 10MB chunk size which can be altered as your wish.You can loop on whole library files too. If the file size is less then chunk size , file will be uploaded without chunking. Script uses Client Context
Add-Type –Path "C:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type –Path "C:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
Function UploadFileInSlice ($DestinationCtx, $SourceCtx, $SourceFileUrl, $DestinationFolderUrl, $fileName, $fileChunkSizeInMB) {
# Each sliced upload requires a unique ID.
$UploadId = [GUID]::NewGuid()
# Get File by Server Relative URL
$File = $SourceCtx.Web.GetFileByServerRelativeUrl($SourceFileUrl)
$SourceCtx.Load($File)
# Get file Steam with OpenBinarySteam
$StreamToUpload = $File.OpenBinaryStream()
$SourceCtx.ExecuteQuery()
# File size in bytes
$FileSize = ($File).length
# Get Destination Folder by Server Relative URL
$DestinationFolder = $DestinationContext.Web.GetFolderByServerRelativeUrl($DestinationFolderUrl)
$DestinationCtx.Load($DestinationFolder)
$DestinationCtx.ExecuteQuery()
# Set Complete Destination URL with Destination Folder + FileName
$destUrl = $DestinationFolderUrl + "/" + $fileName
# File object.
[Microsoft.SharePoint.Client.File] $upload
# Calculate block size in bytes.
$BlockSize = $fileChunkSizeInMB * 1000 * 1000
Write-Host "File Size is: $FileSize bytes and Chunking Size is:$BlockSize bytes"
if ($FileSize -le $BlockSize)
{
# Use regular approach if file size less than BlockSize
Write-Host "File uploading with out chunking"
$upload =[Microsoft.SharePoint.Client.File]::SaveBinaryDirect($DestinationCtx, $destUrl, $StreamToUpload.Value, $true)
return $upload
}
else
{
# Use large file upload approach.
$BytesUploaded = $null
$Fs = $null
Try {
$br = New-Object System.IO.BinaryReader($StreamToUpload.Value)
#$br = New-Object System.IO.BinaryReader($Fs)
$buffer = New-Object System.Byte[]($BlockSize)
$lastBuffer = $null
$fileoffset = 0
$totalBytesRead = 0
$bytesRead
$first = $true
$last = $false
# Read data from file system in blocks.
while(($bytesRead = $br.Read($buffer, 0, $buffer.Length)) -gt 0) {
$totalBytesRead = $totalBytesRead + $bytesRead
# You've reached the end of the file.
if($totalBytesRead -eq $FileSize) {
$last = $true
# Copy to a new buffer that has the correct size.
$lastBuffer = New-Object System.Byte[]($bytesRead)
[array]::Copy($buffer, 0, $lastBuffer, 0, $bytesRead)
}
If($first)
{
$ContentStream = New-Object System.IO.MemoryStream
# Add an empty file.
$fileCreationInfo = New-Object Microsoft.SharePoint.Client.FileCreationInformation
$fileCreationInfo.ContentStream = $ContentStream
$fileCreationInfo.Url = $fileName
$fileCreationInfo.Overwrite = $true
#Add file to Destination Folder with file creation info
$Upload = $DestinationFolder.Files.Add($fileCreationInfo)
$DestinationCtx.Load($Upload)
# Start upload by uploading the first slice.
$s = New-Object System.IO.MemoryStream(,$Buffer)
Write-Host "Uploading id is:"+$UploadId
# Call the start upload method on the first slice.
$BytesUploaded = $Upload.StartUpload($UploadId, $s)
$DestinationCtx.ExecuteQuery()
# fileoffset is the pointer where the next slice will be added.
$fileoffset = $BytesUploaded.Value
Write-Host "First patch of file with bytes"+ $fileoffset
# You can only start the upload once.
$first = $false
}
Else
{
# Get a reference to your file.
$Upload = $DestinationCtx.Web.GetFileByServerRelativeUrl($destUrl);
If($last) {
# Is this the last slice of data?
$s = New-Object System.IO.MemoryStream(,$lastBuffer)
# End sliced upload by calling FinishUpload.
$Upload = $Upload.FinishUpload($UploadId, $fileoffset, $s)
$DestinationCtx.ExecuteQuery()
Write-Host "File Upload Completed Successfully!"
# Return the file object for the uploaded file.
return $Upload
}
else {
$s = New-Object System.IO.MemoryStream(,$buffer)
# Continue sliced upload.
$BytesUploaded = $Upload.ContinueUpload($UploadId, $fileoffset, $s)
$DestinationCtx.ExecuteQuery()
# Update fileoffset for the next slice.
$fileoffset = $BytesUploaded.Value
Write-Host "File uploading is in progress with bytes: "+ $fileoffset
}
}
} #// while ((bytesRead = br.Read(buffer, 0, buffer.Length)) > 0)
}
Catch {
Write-Host $_.Exception.Message -ForegroundColor Red
}
Finally {
if ($Fs -ne $null)
{
$Fs.Dispose()
}
}
}
return $null
}
#URL to Configure, in this case Destination is SP Online site URL
#Adding up credentials hard-code, you can use Get-Credentails PS command too
$DestnationSiteUrl = "https://your-domain.sharepoint.com/sites/xyz"
$DestinationRelativeURL = "/sites/xyz/TestLibrary" #server relative URL here with library Name and Folder name
$DestinationUserName = "xyz@your-domain.com"
$DestinationPassword = Read-Host "Enter Password for Destination User: $DestinationUserName" -AsSecureString
#URL to Configure, in this case Source is On-Prem site URL
#Adding up credentials hard-code, you can use Get-Credentails PS command too
$SourceSiteUrl = "http://intranet/sites/xyz"
$SourceRelativeURL = "/sites/xyz/TestLibrary/myfile.pptx" #server relative URL here with library Name and file name with extension
$SourceUsername = "domain\xyz"
$SourcePassword = Read-Host "Enter Password for Source User: $SourceUsername" -AsSecureString
#Set a file name with extension
$FileNameWithExt = "myfile.pptx"
#Get Source Client Context with credentials
$SourceContext = New-Object Microsoft.SharePoint.Client.ClientContext($SourceSiteUrl)
#Using NetworkCredentials in case of On-Prem
$SourceCtxcredentials = New-Object System.Net.NetworkCredential($SourceUsername, $SourcePassword)
$SourceContext.RequestTimeout = [System.Threading.Timeout]::Infinite
$SourceContext.ExecuteQuery();
#Get Destination Client Context with credentials
$DestinationContext = New-Object Microsoft.SharePoint.Client.ClientContext($DestnationSiteUrl)
#Using SharePointOnlineCredentials in case of SP-Online
$DestinationContext.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($DestinationUserName, $DestinationPassword)
$DestinationContext.RequestTimeout = [System.Threading.Timeout]::Infinite
$DestinationContext.ExecuteQuery();
#All Set up, now just call the UploadFileInSlice with parameters
$UpFile = UploadFileInSlice -DestinationCtx $DestinationContext -SourceCtx $SourceContext -DestinationFolderUrl $DestinationRelativeURL -SourceFileUrl $SourceRelativeURL -fileName $FileNameWithExt -fileChunkSizeInMB 10
Here is the complete documentation for this one
https://github.com/alimughalx/CopySharePointFileInChunks
