F14 NFS client gets wrong ownership IDs on NFS mounted partition

[Ed Greshko]

On 06/06/2011 09:23 AM, Mark Eackloff wrote:
> On 05/04/2011 04:46 PM, Mark Eackloff wrote:
>> On 05/04/2011 03:12 AM, Frank Elsner wrote:
>>> On Tue, 03 May 2011 17:10:27 -0400 Mark Eackloff wrote:
>>>> Just upgraded to F14.  Small home network environment.  As before my upgrade from F13, my /home directory is an NFS mounted partition exported from my F13 (not yet upgraded) server.  Nothing changed on the server.  Where all my imported /home files on the client had the correct ownership before the upgrade, they now all show a UID and GID of 99 (nobody) on the client.  This is obviously rendering filess nearly useless.
>>>>
>>>> Authentication is through NIS.  "ypcat passwd" yields expected listing with all imported user IDs with the expected UIDs and GIDs (all above 499).
>>> I guess this an NFS version problem which I had also.
>>>
>>> Add "nfsvers=3" to your mount options and retry.
>>>
>>> For me, I hat to add the option to my automounter files, YMMV.
>>>
>>>
>>> --Frank Elsner
>> Bingo!  Strange though.  The man page for mount.ntfs has no mention of that option.
>>
>> Thanks Frank
>>
>> Mark
> Found it on man 5 nfs.
>
> Mark

With NFSv4 now being the default, and preferred protocol, it is 
important/vital to modify the file /etc/idmapd.conf on both the client 
and server side to avoid the issue of mismatched file ownership.