[9fans] fun with cfs.

["Ronald G. Minnich" <rminnich@lanl.gov>]

I've been playing around with lib9p and then started looking at cfs. You 
can do something with cfs that is kind of fun. 

I can send patches if anyone wants them. 

Basically, you rip all the caching out of cfs and you have a very nice 
tutorial program for seeing how 9p works. Took about 15 mins. You end up 
with cfs.c and (IIRC) stats.h or some such, so you get one .c file and you 
can then:
./cfs -S -d il!yourhost

And you get this nice mountpoint, which you can cd to, ls, to things in 
inside of .... all while watching the 9p traffic so you can see how it 
works. Good fun.

It would be great for showing people how 9p works or for classes. Even
better is letting poor suffering students do the same thing with nfs, and
then with 9p; you really start to appreciate 9p if you've done a lot of
NFS (which I have ...).

Now here's where somebody tells me: that file system already exists, just 
do x and y and z; so, if this is useless, well, I had fun anyway; if not, 
then I'll send the c-diffs as they are very short. 


thanks

ron