Not possible to create a sparsebundle image on a SMB mounted Volume I'm trying to create a sparse bundle image from Disk Utility directly on my NAS (through a mounted smb volume):



I then get the following error after a few seconds:



Creating a sparseimage the same way works perfectly.
I however wanted to go to a sparse bundle as the file is afterwards synchronized with Google Drive and sparsebundle are seen as folders and are then more sync-friendly.

I'm on 10.10.1.

Info about the mounted volume:
To use sparsebundles and Time Machine backups, a NAS must support AFP and one must mount the share using the AFP protocol. AFP supports metadata transport that is not carried via SMB shares. CIF/SMB should be used with Windows-based systems. AFP should be used with Apple systems whenever possible.

While you might be able to create a sparsebundle and use it under SMB, I can see no reason for doing so. When you're using OS X, you're best served by using AFP.