Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 187

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 field. 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 file-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 firewall to allow a source IP from any of the NAS controllers, then open the firewall 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 files with the same name can reside in the same folder, even if their names differ only by a single uppercase or lowercase character. • Any file or directory stored in a FluidFS NAS volume includes metadata that saves access permissions to the file 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 file id compatibility setting (32-bit or 64-bit). Click Next. NOTE: Starting with NFS v3, all file IDs are 64-bit. However, some older applications cannot properly handle file IDs where the upper 32 bits are utilized. To solve this problem, you can use either 32-bit or 64-bit file ID compatibility. The file ID remains 64-bit, but only the lower 32 bits are utilized. 32-bit file ID compatibility provides maximum client compatibility. It works with both legacy applications and new applications. 64-bit file ID compatibility is used for clients where 64-bit file IDs are acceptable and where the set of files 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 configuration (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 configuration 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 187