We are preparing to upgrade our servers to RHEL 6.5 from 5.6. Everything on the test server running 6.5 (ComputeNode, Kernel 2.6.32-431.5.1.el6.x86_64) is working well except for NFS. We have a storage array from Sun that shares out several mounts through NFS. The shares are mounted on startup through /etc/fstab. However, whenever a user (whether from NIS or now Active Directory) logs into the test server and access the shares, the UID and GID are set to nobody (99). If a user saves something to the share, it is seen as nobody and the UID/GID of the user. Has anyone else encountered this problem? How do you resolve this issue? We have seen this happen on another RHEL 6 server we have and a user that has CentOS 6.5 on his laptop noticed the same thing happen. We don't have this problem on our existing RHEL 5.6 server and the /etc/fstab NFS mounts are entered the same way on both RHEL 5 and RHEL 6 servers.

Output of /etc/fstab and /etc/idmapd.conf are below:

/etc/fstab
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/etc/fstab

Created by anaconda on Tue Dec 10 03:24:33 2013

#

Accessible filesystems, by reference, are maintained under '/dev/disk'

See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

#
/dev/mapper/vg_lcompclone-lv_root / ext4 defaults 1 1
UUID=3af7c43d-00dd-4b05-867d-ccea896b0087 /boot ext4 defaults 1 2
/dev/mapper/vg_lcompclone-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0

7410 Storage System

share-2:/export/a /mnt/a nfs rsize=32768,wsize=32768
share-2:/export/c /mnt/c nfs rsize=32768,wsize=32768
share-2:/export/g /mnt/g nfs rsize=32768,wsize=32768
share-2:/export/s6 /mnt/s nfs rsize=32768,wsize=32768
share-2:/export/p /mnt/p nfs rsize=32768,wsize=32768
share-2:/export/r /mnt/r nfs rsize=32768,wsize=32768
share-2:/export/d /mnt/d nfs rsize=32768,wsize=32768
share-2:/export/m /mnt/m nfs rsize=32768,wsize=32768
share-2:/export/NBCD /mnt/n nfs rsize=32768,wsize=32768
share-2:/export/asf/dirs /mnt/r/ASF nfs rsize=32768,wsize=32768
share-2:/export/whipstor /mnt/whipstor nfs rsize=32768,wsize=32768
share-2:/export/w /mnt/w nfs rsize=32768,wsize=32768

7320 Storage Array

192.168.170.59:/export/z /mnt/z nfs rsize=32768,wsize=32768

/etc/idmapd.conf
[General]

Verbosity = 0
Pipefs-Directory = /var/lib/nfs/rpc_pipefs
Domain = localdomain

[Mapping]

Nobody-User = nobody
Nobody-Group = nobody

[Translation]

Method = nsswitch