[K12OSN] NFS sync slow, async scary

[Iman]

see

www.imanlinuxer.blogspot.com

On Jan 7, 2008 9:53 PM, Shawn Powers <spowers at 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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