Several questions

[Montana State]

OK, here are what I hope some simple questions, if they're RTFM then
somebody tell me where.

1)  NFS is supposed to be a "stateless" protocol.  What good is a stateless
protocol that requires  a whole schmeer of stateful servers to  provide
"most" of the semantics of the Unix file system?  I'm thinking specifically
of all of Sun's quotadaemons, lockdaemons, etc etc. ad nauseum.

2)  If I have a 'quota' partition on one machine (machineA)  which is
NFS mounted on machineB, will write()'s done by the user on machineB fail
if the user is over-quota on machineA where the quotas are kept??  I tried
it a few times, and it appears to be that way, but is this behavior 
guaranteed??

3)  If I have a disk partition mounted ro (read-only) and then I want
to remount it rw (read-write)  how do I find who has an open file on that
partition that's keeping me from doing a umount on it.  (Short of shutting
the machine down).

4)  Does doing a full backup, newfs, and a full restore really accomplish
anything constructive? (Short of testing MTBF's for tapes and drives??).

5)  Does the out-of-band signaling part of the Ultrix networking software
work??  I'm not having much luck.