What am I not understanding about /etc/exports?

[David Benfell]

On Tue, 10 Apr 2007 15:24:26 +0300, Giorgos Keramidas wrote:
> On 2007-04-06 20:57, David Benfell <benfell at parts-unknown.org> wrote:
> >On Sat, 07 Apr 2007 01:56:41 +0300, Giorgos Keramidas wrote:
> >> To allow NFS mounts to work correctly from hosts in the IP ranges
> >> 192.168.18.XXX, 192.168.19.XXX listed in your /etc/exports file, you
> >> will have to extend the list of addressed permitted for 'rpcbind'.
> >
> > I'd definitely missed that.  Unfortunately, correcting it (both on
> > client and server) seems to have made no difference.  I still have the
> > same symptoms, as if I need to send a HUP signal someplace (but if
> > this is true, then where?).
> 
> AFAIR, you have to restart at leats the following:
> 
>     /etc/rc.d/rpcbind restart
>     /etc/rc.d/mountd restart
> 
Progress!  Or at least something different, now...

Now it says, on the client, RPC: Program not registered.  A google
search yielded the suggestion that I should reboot the client; this
made no difference.

Stranger still, and different from the scenario described in the
page, there are no messages about NFS in /var/log/messages on the
server; it notes that the slave went down (when I rebooted the client)
and came back up, okay.

On the client, I'm seeing messages from NIS indicating that it couldn't
get a UDP handle to ypxfer.

Whoops.

I checked the packet filtering instructions on both systems; these
seem okay.

So I tried rebooting the server, and now I'm right back where I
started.  But I noticed a complaint that it couldn't change the
attributes on /usr:

Apr 10 08:28:59 earth mountd[739]: can't change attributes for /usr
Apr 10 08:28:59 earth mountd[739]: bad exports list line /usr -alldirs -maproot
Apr 10 08:28:59 earth mountd[739]: network/host conflict

I've been here before; the FAQ says, "The most frequent problem
is not understanding the correct format of /etc/exports. Please
review  exports(5) and the NFS entry in the Handbook, especially
the section on configuring NFS."


Which leads me back to the original question.  Here's the file:

/ -alldirs -maproot=root 127.0.0.1
#/usr/src -alldirs -maproot=root 127.0.0.1 192.168.19.1
/usr -alldirs -maproot=root 127.0.0.1 192.168.19.1
/public -alldirs -maproot=root 127.0.0.1 192.168.18.45 192.168.18.46 192.168.19.1
/home -alldirs -maproot=root 127.0.0.1 192.168.18.45 192.168.18.46 192.168.19.1
/cdrom -alldirs,quiet,ro 127.0.0.1 -network 192.168 -mask 255.255.0.0

And:

lupin% showmount -e earth.cybernude.org
Exports list on earth.cybernude.org:
/public                            127.0.0.1 192.168.18.45 192.168.18.46 192.168.19.1 
/home                              127.0.0.1 192.168.18.45 192.168.18.46 192.168.19.1 
/                                  127.0.0.1 
lupin% 

As you can see, there are serious discrepancies, here.  And I cannot
see where my syntax is correct on the lines in /etc/exports that work
and incorrect on the lines which don't work.

--
David Benfell, LCP
benfell at parts-unknown.org
---
Resume available at http://www.parts-unknown.org/
NOTE: I sign all messages with GnuPG (0DD1D1E3).
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