Description of problem:
Inconsistent variable naming style in /etc/sysconfig/nfs
a user echo "RPCMOUNTDARGS=\"-f /etc/exports.new\"" >>/etc/sysconfig/nfs
and restart nfs, but the config not become effective...

so we find the problem:
[root@dhcp12-144 ~]# grep ARGS /etc/sysconfig/nfs
RPCNFSDARGS=""
RPCIDMAPDARGS=""
RPCGSSDARGS=""
RPCSVCGSSDARGS=""
BLKMAPDARGS=""
#RPCNFSDARGS="--no-tcp"
[root@dhcp12-144 ~]# grep OPTS /etc/sysconfig/nfs
RPCRQUOTADOPTS=""
RPCMOUNTDOPTS="-f /etc/exports"

Version-Release number of selected component (if applicable):
all version from RHEL5 6 7

How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:
[root@dhcp12-144 ~]# grep ARGS /etc/sysconfig/nfs
RPCNFSDARGS=""
RPCIDMAPDARGS=""
RPCGSSDARGS=""
RPCSVCGSSDARGS=""
BLKMAPDARGS=""
#RPCNFSDARGS="--no-tcp"
[root@dhcp12-144 ~]# grep OPTS /etc/sysconfig/nfs
RPCRQUOTADOPTS=""
RPCMOUNTDOPTS="-f /etc/exports"

Expected results:
[root@dhcp12-144 ~]# grep ARGS /etc/sysconfig/nfs
RPCNFSDARGS=""
RPCIDMAPDARGS=""
RPCGSSDARGS=""
RPCSVCGSSDARGS=""
BLKMAPDARGS=""
#RPCNFSDARGS="--no-tcp"
# and follow two
RPCRQUOTADARGS=""
RPCMOUNTDARGS="-f /etc/exports"

# delete RPCRQUOTADOPTS RPCMOUNTDOPTS, but
RPCRQUOTADOPTS RPCMOUNTDOPTS still available for backport compatible;

Additional info: