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Re: [K12OSN] NFS sync slow, async scary



see

www.imanlinuxer.blogspot.com

On Jan 7, 2008 9:53 PM, Shawn Powers <spowers inlandlakes org > wrote:
After messing with my NFS server last week to get my thin clients to
behave happily, my /home export to the main network, which connects
to about 150 OSX machines was set with the "sync" option in /etc/
exports.

This seemed to make sense to me, but in practice (ie, today) the
performance is so terribly slow that the OSX computers are unusable.
After trying to weed out network issues (cheap switches do not make
this easy), I tried changing the export to "async" -- and the OSX
clients are all behaving magically delicious.

The problem, of course, is the threat of "doom and gloom" that goes
along with exporting NFS with the async option.  I'm curious the
ramifications that go along with doing such a thing, and I'm also
curious what the "Right Thing" is to do.

UPDATE: I just got a call that the computers are not mostly
complaining that file locking is working, but if they tell OSX to
disable locks, things work again.  My suspicion is that I'm looking
at quite a !fun day...

I realize the clients I'm referring to are not running Linux (those,
in fact are working quite nicely), but I'm still interested in
anyone's thoughts on the NFS thing...

Thanks,
-Shawn

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