Hi there,
how's your users authenticated and resolved to UIDs?

we use LDAP server with SSSD daemon configured.

I'd check, if the domain is stated in your sssd.conf (if relevant) and check nsswitch.conf (isn't possible your user exist locally with diff UID?) and local users have preference in nsswitch.conf - in other words, is user 'kovacs' same UID on client and server?

I know it is trivial, but maybe worth checking?


--
*Karel Lang*
*Unix/Linux Administration*
l...@afd.cz | +420 731 13 40 40
AUFEER DESIGN, s.r.o. | www.aufeerdesign.cz

On 07/01/2015 07:02 PM, Orion Poplawski wrote:
On 06/30/2015 01:46 PM, Eve V. E. Kovacs wrote:
We have an SL6 nfsv4 file server and a number of SL6 clients.
We were careful to configure idmapd.conf on both the clients and the server to
have the same domain name as follows:

# The following should be set to the local NFSv4 domain name
# The default is the host's DNS domain name.
#Domain = local.domain.edu
Domain = localdomain

All of this worked until recently.

Now, when I try to change the ownership of my file 'test' on one of the
clients, I get an error:
chown: changing ownership of test : Invalid argument

On the server, I see errors in the log file:
  rpc.idmapd[6092]: nss_getpwnam: name 'kov...@hep.anl.gov' does not map into
domain 'localdomain'

Another thing that could be tried, add hep.anl.gov to Local-Realms in 
idmapd.conf.


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