[nflug] fishing for an idea

[Cyber Source]

Hello All,
  I can remember way back when terabyte drives weren't even dreamed of 
hard drive space was an issue to constantly think about. My first pc did 
not even have a hard drive and my first hard drive was a 20MB, man, what 
would you do with all that space??!!
  Anywho, I can vaguely remember one of the early Linux distro's install 
routine (either mandrake or redhat) would ask about quotas etc.. I think 
I would like to employ a quota limit of such. I thought I would ask the 
very clever folks on this list for an idea, here's what I got.
  I, as a service, run a remote backup system for my clients, wherein I 
have rsync run on their boxen to backup certain data to our systems 
here. It all works great except for a growing problem. One of my clients 
just had a baby and he's going crazy with the huge megapixel pics and 
the gigabyte sized movies. He wants his stuff backed up here and  when 
he just plops a couple of gigabyte file into the locations getting 
backed up, it creates a huge problem, takes way too long, slow upload 
speed on his end, etc..
  So, here's what I would like, just not sure how to implement it. I 
would like to give him a folder and tell him, ok, whatever you place in 
this folder will get backed up remotely. That's easy. Then I what I 
would like to have is a file size limit on the folder, that he could not 
place a file larger than "x" into this folder. That's a little harder. 
In addition to that limitation, I would like it so that he cannot place 
more than a cumulative size "x" of files in any 24 hour period, so I can 
run the backups on them, once their here, rsync is smart enough to know 
what is here and doesnt need to be copied over. That's gonna be kinda tough.
  Any ideas on how to implement this or another way to get around the 
problem would be greatly appreciated. TIA, Peter