NFS Utilities-1.1.2

Introduction to NFS Utilities

The NFS Utilities package contains the userspace server and client tools necessary to use the kernel's NFS abilities. NFS is a protocol that allows sharing file systems over the network.

Package information

NFS Utilities Dependencies


portmap-6.0 (Runtime dependency)


TCP Wrapper-7.6

Optional for NFSv4 Support

pkg-config-0.22, libevent, and libnsfidmap

Optional for GSS (RPC Security) Support

pkg-config-0.22, MIT Kerberos V5-1.6 or Heimdal-1.1 or libgssapi, and librpcsecgss

Optional for SPKM-3 Support


User Notes:

Kernel Configuration

Enable the following options in the kernel configuration and recompile the kernel if necessary:

File systems:
  Network File Systems:
    NFS File System Support: M or Y
    NFS Server Support: M or Y

Select the appropriate sub-options that appear when the above options are selected.

Installation of NFS Utilities

Before you compile the program, ensure that the nobody user and nogroup group have been created. You can add them by running the following commands as the root user:

groupadd -g 99 nogroup &&
useradd -c "Unprivileged Nobody" -d /dev/null -g nogroup \
    -s /bin/false -u 99 nobody


The classic uid and gid values are 65534 which is also -2 when interpreted as a signed 16-bit number. These values impact other files on some filesystems that do not have support for sparse files. The nobody and nogroup values are relatively arbitrary. The impact on a server is nil if the exports file is configured correctly. If it is misconfigured, an ls -l or ps listing will show a uid or gid number of 65534 instead of a name. The client uses nobody only as the user running rpc.statd.

Install NFS Utilities by running the following commands:

./configure --prefix=/usr \
            --sysconfdir=/etc \
            --disable-nfsv4 \
            --disable-gss &&

If your /usr directory is NFS mounted, you should install the executables in /sbin by passing an additional parameter --sbindir=/sbin to the above ./configure command.

This package does not come with a test suite.

Now, as the root user:

make install

Command Explanations

--disable-nfsv4: Disables support for NFS version 4.

--disable-gss: Disables support for RPCSEC GSS (RPC Security).

Configuring NFS Utilities

Server Configuration

/etc/exports contains the exported directories on NFS servers. Refer to the exports.5 manual page for the syntax of this file. Also refer to the "NFS HowTo" available at for information on how to configure the servers and clients in a secure manner. For example, for sharing the /home directory over the local network, the following line may be added:

/home <>(rw,subtree_check,anonuid=99,anongid=99)
Boot Script

Install the /etc/rc.d/init.d/nfs-server init script included in the blfs-bootscripts-20080816 package to start the server at boot.

make install-nfs-server

Now create the /etc/sysconfig/nfs-server configuration file:

cat > /etc/sysconfig/nfs-server << "EOF"
tcpwrappers Configuration

If you have TCP Wrapper-7.6 installed and there is a restrictive /etc/hosts.deny file, ensure you have an entry in the /etc/hosts.allow file for access from the portmap daemon. See the man page in section 5 for hosts_access for details on creating appropriate rules.

Client Configuration

/etc/fstab contains the directories that are to be mounted on the client. Alternately the partitions can be mounted by using the mount command with the proper options. To mount the /home and /usr partitions, add the following to the /etc/fstab:

<server-name>:/home  /home nfs   rw,_netdev,rsize=8192,wsize=8192 0 0
<server-name>:/usr   /usr  nfs   ro,_netdev,rsize=8192            0 0
Boot Script

Install the /etc/rc.d/init.d/nfs-client init script included in the blfs-bootscripts-20080816 package to start the client services at boot.

make install-nfs-client

To automatically mount nfs filesystems, clients will also need to install the netfs bootscript as described in Configuring for Network Filesystems.


Installed Programs: exportfs, mount.nfs, mount.nfs4, nfsstat, rpc.mountd, rpc.nfsd, rpc.statd, rpcdebug, showmount, sm-notify, start-statd and umount.nfs as well as umount.nfs4
Installed Libraries: None
Installed Directories: /var/lib/nfs

Short Descriptions


maintains a list of NFS exported file systems.


Used to mount a network share using NFS


Used to mount a network share using NFSv4


prints NFS statistics.


implements the NFS mount protocol on an NFS server.


implements the user level part of the NFS service on the server.


is used by the NFS file locking service. Run on both sides, client as well as server, when you want file locking enabled.


sets or clears the kernel's NFS client and server debug flags.


displays mount information for an NFS server.


is used to send Network Status Monitor reboot messages.


is a script called by nfsmount when mounting a filesystem with locking enabled, if statd does not appear to be running. It can be customised with whatever flags are appropriate for the site.


Used to unmount a network share using NFS


Used to unmount a network share using NFSv4

Last updated on 2008-05-09 08:00:42 -0500