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Date:      Wed, 17 Jun 1998 13:30:17 -0700
From:      Andrew Sharp <andy@accrue.com>
To:        "FreeBSD-Net (FreeBSD.Org) List" <freebsd-net@FreeBSD.ORG>
Subject:   Re: NFS Client hangs between FreeBSD Client and FreeBSD Server
Message-ID:  <35882759.73BE61C5@accrue.com>
References:  <n1314047663.82214@maczebedee>

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I had a similar problem between two FreeBSD machines, except that there
was no mismatch: both client and server were UDP.  And it hung all over
the place.  It seems that two FreeBSD machines alone on a 100MB network
had timing problems in the UDP NFS code.  Finally figured out that it
wasn't using TCP and switching to that fixed the hangs.  The real
problem is that reading the documentation cover to cover, it is easy to
assume that the default must be TCP, because they say don't use UDP
unless there is a gun to your head, blah blah, so there is no need to
specifically specify that [using the available args].  I don't think the
defaults are explicitly specified in the man pages and HOWTOs and what
not.  Perhaps in the NFS spec, but....

a


Graeme Brown wrote:
> 
> Dear Freddijanto
> 
> Thanks for your reply. It fixed my problem straight away.
> 
> Why on earth don't the default nfs client options set in /etc/rc.conf
> as shipped with FreeBSD specify that TCP mode is required for the
> client. I spent several frustrating days banging my head against an
> NFS brick-wall over this one !  Well I am enlightened now.
> 
> Thanks
> 
> Graeme

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