AIX mount nfs 文件系统失败

报 mount: 1831-008 的错，配置系统参数后恢复。

操作系统版本为：

# oslevel 6.1.0.0

LOG如下：

# mount 192.168.240.69:/xyz/xvdh2/dmp /dmp
mount: 1831-008 giving up on:
192.168.240.69:/xyz/xvdh2/dmp
vmount: Operation not permitted.
# mkdir /u01/dmp

# nfso -p -o nfs_use_reserved_ports
nfs_use_reserved_ports = 0
# nfso -p -o nfs_use_reserved_ports=1
Setting nfs_use_reserved_ports to 1
Setting nfs_use_reserved_ports to 1 in nextboot file
# nfso -p -o nfs_use_reserved_ports
nfs_use_reserved_ports = 1
# mount 192.168.240.69:/xyz/xvdh2/dmp /u01/dmp

# df -g
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on
/dev/hd4           5.00      4.72    6%    18015     2% /
/dev/hd2          10.00      7.14   29%    53720     4% /usr
/dev/hd9var        5.00      4.52   10%     9202     1% /var
/dev/hd3          10.00      2.77   73%     4797     1% /tmp
/dev/fwdump        1.00      1.00    1%        4     1% /var/adm/ras/platform
/dev/hd1           5.00      4.95    2%      417     1% /home
/dev/hd11admin      0.50      0.50    1%        5     1% /admin
/proc                 -         -    -         -     -  /proc
/dev/hd10opt       5.00      4.79    5%     9064     1% /opt
/dev/livedump      0.50      0.50    1%        4     1% /var/adm/ras/livedump
/dev/oralv       100.00     79.99   21%    59077     1% /u01
192.168.240.69:/xyz/xvdh2/dmp  13965.49  13235.67    6%       14     1% /u01/dmp