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NFS

Module 9

Data ONTAP 7.3 Fundamentals

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2008 NetApp. All rights reserved. 2

Module Objectives

By the end of this module, you should be able to:

Explain NFS implementation in Data ONTAP

License NFS on a storage system

Explain the purpose and format of/etc/exports

List and define the export specification options

Explain the rules for exports

Describe the use of the exportfs command

Mount an export on a UNIX host

Add an export for an adminhost

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NFS Overview

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NFS Overview

NFS allows network systems (clients) to share

files and directories that are stored and

administered centrally from a storage system

The following platforms usually support NFS:

Sun Microsystems Solaris Linux

HP-UX

And more

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vol0 flexvol1

Exported Resources Overview

SS1

Client1

etc

home

data_files

eng_files

misc_files

Network Connection

Client1

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Setting Up andConfiguring NFS

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7/28 2008 NetApp. All rights reserved. 7

Setting up NFS

Configure NFS using either:

The CLI

FilerView

When setting up NFS, you must have:

An NFS license code

Determined if you are enabling NFS over TCP,

UDP, or both

Determined which version of NFS to enable

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Configuring NFS Using the CLI

To use the CLI to configure NFS on a storage

system, complete the following steps:

1. License NFS on the storage system:

license add

Executing this command starts the rpc.mountdand nfsd daemons.

2. Set NFS options:

options nfs

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Configuring NFS Using FilerView

To configure NFS using FilerView:

FilerView > NFS > Configure

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Exporting Resources

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Exporting Resources

To make resources available to remote clients,

the resource must be exported.

To export a resource persistently:

Edit the /etc/exports file with new entry

Execute the exportfs -a command

Use FilerView

To export a resource temporarily, use the

exportfs -i -o command

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/vol/vol0/pubs -rw=host1:host2,root=host1

/vol/vol1 -rw=host2

/vol/vol0/home

Adding an Export: /etc/exports

Specifies the full path to the directory that is exported.

All hosts can mount the /vol/vol0/home directory as

read-write if an option is not specified.

This option gives read-write permissions to

host2 only. All other hosts have no access.

This option gives root permissions for the

pubs directory to host1.

The first option is listed following a dash.

Additional options are separated by commas.In this example the -rw option allows host1

and host2 to mount the pubs directory. Host

names are listed separated by colons.

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Test Your Knowledge

1. Allow root access to

/vol/vol0 by adminhost

2. Allow read-write access to/vol/vol0/home by

host1 and host2

3. Allow read-write access to/vol/vol1 by host1 and

read-only access by host3

/etc/exports

a. /vol/vol1 -rw=host2

b. /vol/vol0 -rw=adminhost,root=adminhost

c. /vol/vol0/home -rw=host1:host2

d. /vol/vol0 -ro=host2

e. /vol/vol1 -rw=host1,ro=host3

f. /vol/vol1 rw=host1,root=host3

g. /vol/vol0/home rw=host1,ro=host2

h. /vol/vol0 ro=adminhost,root=adminhost

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Exporting

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system> exportfs -a

system> exportfs

/vol/flexvol/qtree -sec=sys,rw=10.254.232.12

/vol/vol0/home -sec=sys,rw,root=10.254.232.12,nosuid

system> rdfile /etc/exports

#Auto-generated by setup Mon Apr 30 08:32:21 GMT 2007

/vol/flexvol/qtree -sec=sys,rw=10.254.232.12

/vol/vol0/home -sec=sys,rw,root=10.254.232.12,nosuid

system>

The exportfs Command

After adding an export to /etc/exports, use

the exportfs -a command to load the exports.

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Adding an Export Using FilerView

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Adding an Export Using FilerView (Cont.)

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Managing NFS Exports

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Temporary Exports

Use the exportfs command to create

in-memory exports:

exportfs -i -o

Example:

exportfs -i -o ro=host1/vol/vol0/home

NOTE: When the storage system reboots, this export will be gone.

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Common exportfs Options

Display all current exports:

exportfs

Add exports to the /etc/exports file:

exportfs -p [options] path

Reload exports from /etc/exports files:

exportfs -r

Unload all exports:

exportfs -uav

Unload a specific export:exportfs -u [path]

Unload an export and remove it from /etc/exports

exportfs -z [path]

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Mounting

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Mounting From a Client

To mount an export from a client:

1. Telnet or log in to the host.

2. Create a directory as a mountpoint for the storage appliance.

3. Mount the exported directory in the host directory you just

created.

4. Change directories to the mounted export.

5. Enterls l to verify that the storage appliance is mounted and

accessible.

telnet 10.32.30.20 (1)

# mkdir /system-vol2 (2)

mount system:/vol/vol2 /system-vol2 (3)

cd /system-vol2 (4)

NetApp1-vol2$

#

#

ls l (5)

-rwxr-xr-x root 719634 FEB 11 2004 ,general

-rwxr-xr-x root 719634 FEB 13 2004 ,policy

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Other NFS Administration Resources

For more information about NFS administration,

see the Data ONTAP NFS Administration

course. This advanced course covers:

Exporting resources across domains, subnets,

and netgroupsAdvanced configuration

NFS statistics gathering

NFS performance tuning NFS troubleshooting

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Module Summary

In this module, you should have learned to:

NFS is a protocol used by Data ONTAP to

network computers.

The /etc/exports file defines exports.

You can configure NFS on a storage systemusing the CLI or FilerView.

After you export a resource, you can mount an

exported file system on a UNIX host.

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Exercise

Module 9: NFS

Estimated Time: 45 minutes

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Answers

Module 9: NFS

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Check Your Understanding

What does NFS stand for?

Network File System

What is the format for the /etc/exports file?

path -{export_option}

What is the purpose of export options?

To set access rights and host access

What command would you use to view what is

exported from the storage appliance? exportfs

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