On May 13, 2007, at 8:44 PM, David Higgs wrote:

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> I've tried to configure NFS and am nearly all the way there, but it
> seems like I've hit a pretty big stumbling block.  I've got OpenBSD
> 4.1-stable (10.0.0.1) with an NFS export of my home directory.  I also
> have a Windows XP machine (10.0.0.2) and installed the SFU 3.5 NFS
> client.

Are most of your clients going to be windows machines?  if so, you  
should thing seriously about using samba.
( you should also read http://www.openbsd.org/mail.html and include  
all even vaguely related config files and output of things like dmesg  
and nfsstat )

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>
> [/etc/exports]
> /home/david -mapall=david:guest -network=10.0.0.0 -mask=255.255.255.0

i notice you're using 'david:guest' here... the first question  
springs to mind is to verify that user david is in group guest?

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>
> I can successfully mount this share locally and perform both reads  
> and writes.
>
> Without any of SFU's User Name Mapping configured, I can mount the
> share with uid/gid of -2/-2 as advertised.  Appropriately, I cannot
> access any files or directories that are not world-readable.  However,
> inside a chmod-777 directory, I cannot create files or directories
> (which might be as expected).
>
> After configuring User Name Mapping to map my Windows account to the
> UNIX account, I can mount the share with the expected uid/gid.

Please provide specifics?  do you mean with the david:guest uid:gid  
mentioned above?

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> Although I can read user-only files and directories, I still cannot
> create any files or directories.

what user:group are the parent directory?  david:guest, or something  
like david:david ? what permissions are they?

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>   Windows keeps reporting that the
> drive has write-protection enabled.
>

What do the log files on the server say?

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> I know this isn't a SFU help forum, but any ideas to try or tips on
> troubleshooting the NFS side is more than welcome.  Thanks in advance.
>
> --david
>
> P.S. On an unrelated sidenote, does mountd always bind to the same
> ports by default?

man mountd
( http://www.openbsd.org/cgi-bin/man.cgi? 
query=mountd&apropos=0&sektion=0&manpath=OpenBSD 
+Current&arch=i386&format=html )
will answer this for you

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> If not, is there a way to fix them at certain
> values, so that PF rules can be written to match?  Linux rpc.mountd(8)
> supposedly has a -p option that can be used for this purpose.