NFS mount from AIX 4.2 to SunOS 5.1 fails after upgrade

NFS mount from AIX 4.2 to SunOS 5.1 fails after upgrade

Post by John Schneide » Wed, 24 Sep 1997 04:00:00



Greetings,
        One of my customers just upgraded an RS/6000 43P from
AIX 4.1 to 4.2.1.  Before the upgrade he was able to NFS mount
a filesystem on a Sparc 1+ (yeah, an oldy) running SunOS 5.1.  As
near has he can tell (he did a preservation upgrade on the AIX)
he has not changed any TCP/IP configuration on either side.

Here is what he receives on the AIX side:


mount: 1831-008 giving up on:
mrd2100-gw:/soma
vmount: There is an input or output error.
NFS getattr failed for server mrd2100-gw: error 7 (RPC: Authentication
error)

While on the Sun side he receives on the console:

NFS request from unprivileged port.
nfs_server: weak authentication

The /etc/filesystems entry on the AIX side is:

/mrd2100-gw/soma:
        dev             = "/soma"
        vfs             = nfs
        nodename        = mrd2100-gw
        mount           = false
        options         = fg,hard,intr
        account         = false

while on the Sun side it's filesystem is being shared with a
/etc/dfs/dfstab entry of:

share -F nfs -orw=omronaix,root=omronaix /soma

He has tried changing parameters like hard/soft, intr/nointr, secure
vers=, proto=, but none of these has changed the symptom.

I went looking through IBMLink but didn't find any PTF about this
specifically.  We are going to pull down U450645 and see if that
helps, because it is pointed to by about a dozen APARs, but that is
just a blind guess.  We also found out that bos.net.tcp.client is
at 4.2.1.2, but bos.net.nfs.client is at 4.2.1.1, and it probably
should be at 4.2.1.2 also.  

I also am going to try Sun patch 100884-27, the SunOS 5.1 NFS jumbo
patch, although I am not sure this will really help.  It hasn't been
updated since 1994.

Do any of you have any suggestions?

Thanks in advance,

John Schneider

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NFS mount from AIX 4.2 to SunOS 5.1 fails after upgrade

Post by Timothy J. L » Wed, 24 Sep 1997 04:00:00


|Greetings,
|       One of my customers just upgraded an RS/6000 43P from
|AIX 4.1 to 4.2.1.  Before the upgrade he was able to NFS mount
|a filesystem on a Sparc 1+ (yeah, an oldy) running SunOS 5.1.  As
|
|While on the Sun side he receives on the console:
|
|NFS request from unprivileged port.
|nfs_server: weak authentication

On SunOS 5.5, a variable that can be set in /etc/system controls
whether nfsd allows NFS requests from unprivileged ports (see
"man nfsd").  You might want to read "man nfsd" on your SunOS 5.1
machine to see if there is anything similar.

But it seems odd that AIX 4.2.1 does not make NFS requests from
privileged ports.

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NFS mount from AIX 4.2 to SunOS 5.1 fails after upgrade

Post by Stefan Monnie » Wed, 24 Sep 1997 04:00:00



Quote:> But it seems odd that AIX 4.2.1 does not make NFS requests from
> privileged ports.

Usually, if mount doesn't always use priveledged ports, it can be convinced to
do it with the appropriate invocation.

        Stefan

 
 
 

1. NFS mount from AIX 4.2 to SunOS 5.1 fails after upgrade


  > |Greetings,
  > |   One of my customers just upgraded an RS/6000 43P from
  > |AIX 4.1 to 4.2.1.  Before the upgrade he was able to NFS mount
  > |a filesystem on a Sparc 1+ (yeah, an oldy) running SunOS 5.1.  As
  > |
  > |While on the Sun side he receives on the console:
  > |
  > |NFS request from unprivileged port.
  > |nfs_server: weak authentication
  >
  > On SunOS 5.5, a variable that can be set in /etc/system controls
  > whether nfsd allows NFS requests from unprivileged ports (see
  > "man nfsd").  You might want to read "man nfsd" on your SunOS 5.1
  > machine to see if there is anything similar.
  >
  > But it seems odd that AIX 4.2.1 does not make NFS requests from
  > privileged ports.

    We are experiencing the same problem on our first upgrade to AIX 4.2.1.
    While turning off nfs_portmon on the Solaris side works, it is not a
    realistic option to leave our Solaris machines more vulnerable.  Does
    anyone know of a real solution to this problem?  Solaris Answerbook
    seems to just leave the answer as turning off nfs_portmon as well, which
    is not acceptable.


    "Bucky"       UCS University Computing Services
                   CIS Unix Systems Group

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