hello,
I am using these 2 plugins together:
http://wpmudevorg.wordpress.com/project/Total-Upload-Space-Remaining
and
http://wpmudevorg.wordpress.com/project/Upload-Space-Plugin
on plugin allows you to change the available space per blog, the other one displays the remaining space.
The one displaying the remaining space needed a small modification to pick up the changed value by the other plugin, so for anyone interested here is the fix to space.php
function space_used() {
global $wpblog, $blog_id;
$spaceAllowed = get_blog_option($blog_id, "amanzi_upload_space");
if( $spaceAllowed == '' )
$spaceAllowed = get_site_option("blog_upload_space" );
if( $spaceAllowed == false )
$spaceAllowed = 10;
$dirName = ABSPATH."wp-content/blogs.dir/".$blog_id."/files";