def _is_solution_mount(mount_tuple):
    """Return whether a mount is for a Solution archive.

    Any ISO9660 mounted in `/srv/scality` that isn't for MetalK8s is considered
    to be a Solution archive.
    """
    mountpoint, mount_info = mount_tuple

    if not mountpoint.startswith('/srv/scality/'):
        return False

    if mountpoint.startswith('/srv/scality/metalk8s-'):
        return False

    if mount_info['fstype'] != 'iso9660':
        return False

    return True