[OpenAFS-devel] "Lost contact with file server" problems

[Spencer E Olson]

(sorry if this comes twice, I forgot to subscribe with this email address)

I saw something like this earlier on the list and was wondering if anyone 
(besides myself) has issues with a client losing "contact" with the afsd.

Some background:
connection is a (slow) part of our University network (on-campus housing).
afs client (1.3.87).
SuSe Linux 9.2, 2.6.8 x86_64 kernel

Too frequently, this afs client "loses contact" with the server, though every 
other machine I use retains contact.

During such an outage, "fs checks" does give the expected
"These servers unavailable due to network or server problems: 
afs26.ifs.umich.edu"

The mysterious part is when i look at a trace from tcpdump while running 'fs 
checks', I DO see several responses from the server for every outgoing packet 
from my own machine.  I'll admit that I don't know the format of the AFS 
packets yet, and thus cannot really deduce how the server is responding, but I 
would have expected either zero return packets, or garbage in return.

This is a multi-homed address and responses always seem to come from different 
various IPs than the one my client sent the request to.

For the record, I tried this with my iptables disabled also.

Spencer


------------
Spencer Olson
Department of Physics
University of Michigan
Spencer.Olson@umich.edu
http://www.umich.edu/~olsonse/
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