Hi,
I've just started using AFS on a Mac laptop with wireless network and
noticed a problem with the startup script, which never occurred on
machines with wired ethernet. It seems that although the network
initialization script has already been called before AFS gets started, the
network startup is proceeding in background and 9 times out of 10, when
wireless is in use, it hasn't finished setting up when the AFS rc script
calls "CheckForNetwork". As distributed, the script immediately exits if
the network isn't up
(if [ "${NETWORKUP}" = "-NO-" ]; then exit; fi)
I eventually figured out how to manually run the AFS startup script when
it didn't load, but this isn't knowledge that most OS-X users will have -
"sudo SystemStarter start AFS"
I changed my startup script to loop for a while waiting for network
initialization and not give up for a couple of minutes - this is probably
overkill - "sleep 5" was actually enough every time I tested it on our
campus network.
echo "Starting OpenAFS"
# Don't just exit if the network isn't up - give it some time.
i=0
delay=5
maxdelay=120
while [ "${NETWORKUP}" != "-YES-" ]; do
i=$((i + delay))
[ $i -gt $maxdelay ] && exit
sleep $delay
unset NETWORKUP
CheckForNetwork
done
Also, it would seem logical that the requirement metadata in the
"StartupParameters.plist" file should include "Network" as a prerequisite,
although in practice that makes no difference because of the asynchronous
startup.
On a related note, I was happy to see that the OpenAFS 1.4 rc script now
has start and stop functions. The stop function works great as long as no
open filehandles exist into AFS, but when AFS was busy, I got system hangs
or else immediate system crashes when AFS tried to unload. I don't know
enough OS-X or afsd internals to speculate on how to improve this
situation though.
Richard
--
Richard Brittain, Kiewit Computing Services, 6224 Baker/Berry Library
Dartmouth College, Hanover NH 03755
Email: [EMAIL PROTECTED]
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