AdvFS question

Hi all.

I've just had a "fun" weekend of repackaging one AdvFS. It all went 
well, if not as quickly as I wanted it to be. Now I have one question.

OS is Digital UNIX 4.0D, so the AdvFS is version 3. The operation was 
basically increasing the BMT parameters for pre-allocate and extent to 
fit our needs for Cyrus IMAP storage. We're running a file domain with 
140,000 files and I expect it to get to 2x0,000. So, I've set parameters 
for 300,000 files (-x 768 -p 21600 -l  2048).

What I would like to know is, how can I get the parameters of the file 
system? Let's say I run into an unknown system, how do I check the 
parameters used for creation of the file system?

Nix.