NFS: mount clntudp_create: RPC: Program not registered

[Gertjan Klein <gklein@xs4all.nl>]

  I'm trying to get NFS working between two PCs hooked up with a
paralell cable.  The networking itself seems to work: ping, telnet and
FTP work as expected.  I can mount the root directory of the second PC
(judy) on the first (kilu), but not the other way around.  The error I
get is:

  mount clntudp_create: RPC: Program not registered

As far as I can tell the configuration on both sides is equivalent:

kilu:/etc/exports:
/ judy (ro)

judy:/etc/exports:
/ kilu (ro)

kilu: ps -axu | grep rpc:
daemon 118  0.0  0.7  832  368  ?  S  21:25  0:00 /usr/sbin/rpc.portm
root   167  0.0  0.9  888  440  ?  S  21:25  0:00 /usr/sbin/rpc.nfsd
root   169  0.0  0.9  852  432  ?  S  21:25  0:00 /usr/sbin/rpc.mount

judy: ps -axu | grep rpc:
daemon 108  0.0  2.4  832  368  ?  S  21:06  0:00 /usr/sbin/rpc.portm
root   129  0.0  3.1  892  472  ?  S  21:06  0:00 /usr/sbin/rpc.nfsd
root   131  0.0  2.9  860  448  ?  S  21:06  0:00 /usr/sbin/rpc.mount

There is some difference in the output of rpcinfo, but I'm told that's
harmless (I'll include it here for completeness):

kilu: rpcinfo -p:
   program vers proto   port
    100000    2   tcp    111  portmapper
    100000    2   udp    111  portmapper
    100003    2   udp   2049  nfs
    100003    2   tcp   2049  nfs
    100005    1   udp    770  mountd
    100005    2   udp    770  mountd
    100005    1   tcp    773  mountd
    100005    2   tcp    773  mountd

judy: rpcinfo -p:
   program vers proto   port
    100000    2   tcp    111  portmapper
    100000    2   udp    111  portmapper
    100003    2   udp   2049  nfs
    100003    2   tcp   2049  nfs
    100005    1   udp    732  mountd
    100005    2   udp    732  mountd
    100005    1   tcp    735  mountd
    100005    2   tcp    735  mountd

Both systems have been installed from the same CD (Debian 1.3.1); the
kernel configuration options concerning networking are equal.  I can
mount judy on kilu with:

kilu: mount judy:/ /mnt -t nfs

...but going the other way:

judy: mount kilu:/ /mnt -t nfs

.. gives the above error (no matter what order I do the commands, or
start up the PCs).

  Does anyone have any idea what could be the problem? What does "RPC:
Program not registered" mean?

  Gertjan.

-- 
Gertjan Klein <gklein@xs4all.nl>
The Boot Control home page: http://www.xs4all.nl/~gklein/bcpage.html


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