Uploading large files to Azure fileshare

Question

I am able to upload small files to fileshare using below code but large files are not getting transferred. There are methods like blob.PutBlock available to upload files to Blob, but can't find anything for fileshare. Can you please guide me?

StorageCredentials cred = new StorageCredentials("SASToken");
CloudFileClient fClient = new CloudFileClient(new Uri(FileShareUrl)), cred);

CloudFileShare fshare = fileClient.GetShareReference("FileShareName");
CloudFileDirectory root = share.GetRootDirectoryReference();
CloudFileDirectory dir = root.GetDirectoryReference("Folder/subfolder");

var cloudFile = dir.GetFileReference(fileName);
await cloudFile.UploadFromStreamAsync(incomingBlob).ConfigureAwait(false);

Are you trying to upload the file from a website to the storage account? Then you are probably hitting the RequestSizeLimit. Add this right before your Funktion: [RequestSizeLimit(20971520000)] — Daniel Björk, Jun 07 '20 at 16:31
I am sending from a blob from one storage account to a fileshare in another account using blob trigger. — Sharon, Jun 07 '20 at 16:43

score 1 · Answer 1 · answered Jun 07 '20 at 17:33

Instead of streaming large files through your Azure Function, you should use the DataMovement library to copy the files directly from blob storage to your target file share.

The TransferManager class has a corresponding CopyAsync method to copy files from blob to file share.

Here are some samples to get you started with the library, you just need to adjust it to file share instead of blobs.

Uploading large files to Azure fileshare

1 Answers1