[OpenAFS] Metrics on the cell

[Harald Barth]

I think that you are able to turn on some logging (which was probably
inteded for debugging) to get out _some_ data. Others might know what
exact knobs to turn.

> I have been asked by senior leadership to gather data on the usage
> of our cell.

One very important fact that you have to give to the ones asking is
that the following case measured on the server:

$ cat /nfs/server/file > /dev/null
$ cat /nfs/server/file > /dev/null
$ cat /nfs/server/file > /dev/null

gives a usage of approx 3*bytes(file) in x seconds but

$ cat /afs/cell/file > /dev/null
$ cat /afs/cell/file > /dev/null
$ cat /afs/cell/file > /dev/null

gives a usage of approx 1*bytes(file) in x/3 seconds.

So how much the service is worth for all the users, you can only be
seen if you have control over all the clients. That's often not
easy to get for "leadership".

Good luck,
Harald.