Administrator Guide

1. Ensure that the NFS export has read-write permissions. Also, make sure that the trusted user setting is All.
2. For security, type the IP address of the export client in the Limit access to IP address eld. This action ensures that only the
client’s root user can access the export.
3. From a Linux or UNIX client, enter the showmount command to display the NFS exports that are hosted by the NAS cluster.
For example: showmount -e nas_vip
4. As a root user, mount the NFS export and specify the NAS service IP address, the le-system name, and the export path that
you obtained from using the showmount command. Then, designate the local mount point. For example:
mount [options] NAS_service_ip_address:/file_system_name /export_path mount_path
Dell recommends the following options:
hard,tcp,nfsvers=3,timeo=3,retrans=10,rsize=32768,wsize=32768
5. For the NFS export, you can enter the appropriate owner, group, and permissions. Use the chown, chgrp, and chmod
commands, respectively.
You can use NFS and NFS exports in the following ways:
• To use NFS over UDP, adjust the rewall to allow a source IP from any of the NAS controllers, then open the rewall to allow for
port ranges.
• To prevent root from writing to the NFS export, modify the export and change the trusted user setting to All except root.
• To make the NFS export read-only, modify the export and change the permission to Read-only.
• The NFS protocol is case-sensitive. For example, two les with the same name can reside in the same folder, even if their names
dier only by a single uppercase or lowercase character.
• Any le or directory stored in a FluidFS NAS volume includes metadata that saves access permissions to the le or directory.
Create an NFS Export
To create an NFS export:
1. Click NAS, expand NAS Clusters and Local Containers, and then select the NAS container name.
2. In the NAS panel, right-click the container that you want to create the export in and select Create NFS Export. The Create
NFS Export wizard opens.
3. In the General Settings dialog box, specify the NFS export name, directory, and select the appropriate NFS le id
compatibility setting (32-bit or 64-bit). Click Next.
NOTE: Starting with NFS v3, all le IDs are 64-bit. However, some older applications cannot properly handle le IDs
where the upper 32 bits are utilized. To solve this problem, you can use either 32-bit or 64-bit le ID compatibility.
The le ID remains 64-bit, but only the lower 32 bits are utilized.
32-bit le ID compatibility provides maximum client compatibility. It works with both legacy applications and new
applications. 64-bit le ID compatibility is used for clients where 64-bit le IDs are acceptable and where the set of les
that are available in the system is very large.
4. In the Create NFS Export – Access Permissions dialog box, select a Client Access option to specify which client machines (All
Clients, Limit Access to IP , or All clients in a netgroup) are allowed to access the NFS export. Click Next.
5. Specify whether the Permission level is Read-write or Read-only for the export.
6. Select the Trusted users setting that is appropriate for your conguration (options are All, All except root, and Nobody). Click
Next.
NOTE: When you create a new NFS export, select All in the Trusted users area to ensure that you have access until
the conguration is complete.
7. The summary of the new NFS export is displayed. Use the Copy command to copy and save your settings for future reference.
Click Finish to save your selections. Click Back to make changes.
Modify the Client Access Setting for an NFS Export
To modify the client access setting for an NFS export:
1. Click NAS, expand NAS Clusters and Local Containers, and then select the NAS container name.
2. Click the NFS Exports tab.
NAS Container Operations
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