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velmars's avatar
velmars
Copper Contributor
Jul 25, 2025

Azure function app to read files from SMB mounted file share

How can I programmatically connect an Azure Function App to multiple (50+) SMB-mounted Azure File Shares that use the same credentials, given that Logic Apps aren't suitable due to their static connection requirements?

Function App

1 Reply

  • Kidd_Ip's avatar
    Kidd_Ip
    MVP
    Jul 26, 2025

    Take this:

     

    What you required:

    • Linux Function App: SMB mounting is supported only on Linux-based Function Apps.
    • Azure Files: Ensure each file share is created in Azure Storage.
    • Same Credentials: Use the same storage account access key across all mounts.

     

    Steps:

     

    1. Use Azure CLI to Mount Each Share

    You can mount each file share using az webapp config storage-account add:

    az webapp config storage-account add \
  --resource-group <your-resource-group> \
  --name <your-function-app-name> \
  --custom-id <unique-id-for-this-share> \
  --storage-type AzureFiles \
  --account-name <storage-account-name> \
  --share-name <file-share-name> \
  --access-key <storage-account-access-key> \
  --mount-path /<mount-path>

    Repeat this for each of the 50+ shares, changing custom-id, share-name, and mount-path accordingly.

    1. Access Files in Your Function Code

    Once mounted, you can access the shares using standard file I/O:

    string[] files = Directory.GetFiles("/fx-files"); // fx-files is your mount path

     

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