*BSD News Article 71293


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From: phillip@mirriwinni.cse.rmit.edu.au (Phillip Musumeci)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Can't see files on NFS mounted FS
Date: 18 Jun 1996 16:00:21 +1000
Organization: Computer Systems Engineering Department, RMIT Australia
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In-reply-to: Justin England's message of Mon, 17 Jun 1996 15:12:23 -0600
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>>>>> "Justin" == Justin England <jengland@enetis.net> writes:

    Justin> I have a users direvtory (/u1) exported from my SPARC 5 (SunOS
    Justin> 4.1.4) and I have mounted it on my FreeBSD box (2.1.0-RELEASE)
    Justin> which mounts without problems.  When I CD to that directory, I
    Justin> can see all user dirs underneath it, but if I CD to one of the
    Justin> user directories, I can't see any files.  I KNOW that there are
    Justin> files are there, but they do not show up with the ls command.

    Justin> Anybody know what I can do to fix this?

I have seen exactly this happen when exporting an NFS area from a sunos
system to a FreeBSD system that had an ethernet card that only contained 8K
of RAM --- maybe this is what is happening with your systems.  To fix it,
you need to add an option in the sunos /etc/exports to limit packet size
(unfortunately, I can't look up the option right now).

I believe that you get the effect you mentioned because a directory listing
is a small amount of data that gets transferred OK while large amounts of
data cause overflows to occur in the network card, causing loss.  I found
NE2000 clone cards with 16K of RAM to be OK.

phillip

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