I'm adding a new SMB/CIFS storage pointing to a Synology NAS. The storage creates successfully, but the Subdirectory field is greyed out both during creation and when editing the storage afterwards.
My goal is to store vzdump backups in a subfolder (Home-Assistant/VM) rather than the root of the SMB share.
Is this expected behaviour in PVE 9.1.1, or is there a way to enable the field? If not, is editing storage.cfg with a subdir option the recommended approach?