nfs problem

Hello,

I have got problem with NFS on our server (aix 4.3.3 ML11).
Two days ago I had IP duplication (it lasted about 10-15 minutes). Since
then a few times a day workstations cannot access NFS filesystems from our
server, everything hangs up for a couple of minutes and then
comes back to normal state. All other services like samba, NIS are working
fine all the time. There is one NFS filesystems connected to our server from
workstation and it also working without problem.
It looks like workstations cannot properly retrieve information through NFS.


As I saw recently one time workstations can retrieve information but it
takes them a few minutes to for example list mounted filesystem (including
NFS), other time they can't connect to our nfs server and I have to restart
nfs service.

A few more things: About 30 UNIX workstations use exported filesystems from
our server. Another 50 PCs use server resources through Samba.
NFS services run with default number of daemons.

I would be grateful for any help.

Below is the last reported error concerning nfsd:

---------------------------------------------------------------------------
LABEL: SRC
IDENTIFIER: E18E984F

Date/Time: Thu Nov 30 08:37:54
Sequence Number: 2713
Machine Id: 0059DA2A4C00
Node Id: jeli001
Class: S
Type: PERM
Resource Name: SRC

Description
SOFTWARE PROGRAM ERROR

Probable Causes
APPLICATION PROGRAM

Failure Causes
SOFTWARE PROGRAM

Recommended Actions
PERFORM PROBLEM RECOVERY PROCEDURES

Detail Data
SYMPTOM CODE
256
SOFTWARE ERROR CODE
-9020
ERROR CODE
0
DETECTING MODULE
'srchevn.c'@line:'343'
FAILING MODULE
nfsd
---------------------------------------------------------------------------



Regards,
Maciej Dworakowski

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