Here's our particular take on /afs/@cell (/afs/iastate.edu).
We have the standard @sys-forest nonsense (if I had it to do over
I'd probably put these 1 level down). Then we have the following
other top levels (we borrowed MIT's "locker" nomenclature):
academic - lockers for courses
(e.g., /afs/iastate.edu/academic/design/arch403)
common - as per transarc
group - lockers for groups
(e.g., /afs/iastate.edu/group/careerserv)
info - lockers for the web server (smart move to name
this genericly instead of "gopher" way back when :)
private - we allow people to bring in their own disks and
attach them to certain of our AFS servers, they
all live below here)
project - lockers for projects we are working on internally
public - lockers of general public interest
(e.g., /afs/iastate.edu/public/tcltk)
rental - we allow people to rent space on our disks for
whatever reason they are willing to pay for,
those go here
restore - usually empty, if we need to restore a volume
for somebody it goes here for a while for them
to copy out what they need
service - as per transarc
software - the @sys forest again
system - in ye olden days when disks cost $10K/GB
most of our client machines AFS-mounted /usr
those /usr trees live down here
users - the great unwashed
The most likely place for religious arguments is how to do your
homedirs. We put ours as:
/afs/iastate.edu/users/NN/MM/username
where MM and NN are the low 5 bits, and the next 5 bits of the UID
which gives us roughly 32 entries at each directory level.
For example:
# hesinfo janeane passwd
janeane:*:5755:101:,,,,:/home/janeane:/bin/tcsh
# hesinfo janeane filsys
AFS /afs/iastate.edu/users/19/27/janeane w /home/janeane
users
/ \
00..19..31
/ \
/ \
00..27..31
/| \
/ | \
|
janeane
We used to have a dir of symlinks:
/afs/iastate.edu/usr/<username>
but when you have 40,000 of those everytime anybody used one
the system fell to its knees, so it's gone.
As you may have noticed/wondered above we use the HESIOD naming
system (an extenstion of DNS) so we don't have to resort to
stuff like:
/afs/iastate.edu/user/j/a/janeane
which would be non-optimal (we we investigated our choices
we found the idstribution very much skewed -- lost of empty
2-letter combos, while others like /m/a/ and /j/o/ had
many hundreds in them.
Our users can just say:
cd ~janeane
and "magic happens" courtesy of Hesiod.
John
--
John Hascall (__) Shut up, be happy.
Software Engineer, ,------(oo) The conveniences you demanded
Acropolis Project Manager, / |Moo U|\/ are now mandatory.
ISU Computation Center * ||----|| -- Jello Biafra
