[Users] oVirt ISO domain

One of the things that surprised me about oVirt/RHEV's design is the awful handling of ISO/vfd images files. One would expect to just point to an available ISO SMB/NFS share, and have the ISOs in it used. Instead, there's an horrible requirement of needing an empty NFS directory with the right permissions. If that's not unnecessary enough, forcing the user to log into the command line of an otherwise entirely graphical application, and then mount another NFS/SMB/block source or something to get the ISO, and then type the rhevm/engine-iso-uploader command to upload the image files, possibly to the same machine if the installer configured an ISO domain locally. It's completely unnecessary. The design should be changed such that the node could attempt mounting any given NFS/SMB share read-only for the ISO domain (and, even better, have the UI support SMB browsing). Presumably vdsm would have permission to at least read files in a mounted directory. This way, one can easily share a directory using windows/nautilus and have it used by oVirt; or use a graphical SFTP application to copy ISOs to the manager's NFS share. Any thoughts? -xrx