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File Access and Protocols Feature Guide 13

OceanStor 18500 V3 and 18800 V3 Mission Critical Storage System V300R003

This document describes the implementation principles and application scenarios of the NAS feature. Also, it explains how to configure and manage NAS.
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Adding an NFS Share Client

Adding an NFS Share Client

An NFS share client enables client users to access shared file systems using a network.


  • Associated configurations have been completed, and required data is ready.
  • Create an available host name on the DNS in advance if you need to add a client of Host type.
  • Create an available network group name on the LDAP or NIS server in advance if you need to add a client of Network Group type.


  1. Log in to DeviceManager.
  2. Choose Provisioning > Share > NFS (Linux/UNIX/MAC).
  3. Select the NFS share for which you want to add a client.
  4. In the Client List area, click Add.

    The Add Client dialog box is displayed.

  5. Configure the client properties. Table 2-13 describes related parameters.

    Table 2-13  NFS share client properties





    Client type of the NFS share. Types include:
    • Host

      Applicable to the client in non-domain environment.

    • Network group

      Applicable to client in LDAP or NIS domain.


    When a client is included in multiple share permissions, the priority of share authentication from high to low is in the following sequence: host name > IP address > IP network > wildcard > network group > * (anonymous).

    [Default value]


    Name or IP Address

    Name or service IP address of the NFS share client.

    This parameter is available only when the Type is Host.

    [Value range]

    The name:
    • Contains 1 to 255 characters, including letters, digits, hyphens (-), periods (.), and underscores (_).
    • The value can begin with only a digit or letter and cannot end with a hyphen (-) or an underscore (_).
    • The value cannot contain consecutive periods (.), pure digits, or a period before or after an underscore or hyphen, for example, '_.', '._', '.-', or '-.'.
    The IP address:
    • You can enter the IP address of a client or the IP address segment of clients, or use asterisk (*) to represent IP addresses of all clients.
    • You can enter IPv4, IPv6 or their mixed IP address.
    • The mask of IPv4 ranges from 1 to 32. The mask of IPv6 ranges from 1 to 128.



    You can enter multiple names or IP addresses of clients, separated by semicolon.

    Network Group Name

    Network group name in LDAP or NIS domain.

    This parameter is available only when the Type is Network group.

    [Value range]

    The name:
    • Contains 1 to 254 characters.
    • Can contain only letters, digits, underscores (_), periods (.), and hyphens (-).




    The permission for client to access the NFS share. The permissions include:
    • Read-only

      Only reading the files in the share is allowed.

    • Read-write

      Any operation is allowed.

    [Default value]


    Write Mode (Optional)

    Write mode of the NFS share client. The modes include:
    • Synchronous: the data written to the share is written into the disk immediately.
    • Asynchronous: the data written to the share is written into the cache first, then into the disk.

    Data may be lost if a client mounts an NFS share in asynchronous mode, and the client and storage system are faulty at the same time.

    [Default value]


    Permission Constraint (Optional)

    Determine whether to retain the user identity (UID) and group ID (GID) of a shared directory.
    • all_squash: The user ID (UID) and group ID (GID) of a shared directory are mapped to user nobody, which are applicable to public directories.
    • no_all_squash: The UID and GID of a shared directory are reserved.

    [Default value]


    root Permission Constraint (Optional)

    Control the root permission of a client.
    • root_squash: The client cannot access the storage system as user root. If a client accesses the storage system as user root, the client will be mapped as user nobody.
    • no_root_squash: A client can access the storage system as user root and user root can fully manage and access the root directory.

    [Default value]


  6. Confirm the addition of the NFS Share Client.
    1. Click OK.

      The Execution Result dialog box is displayed, indicating that the operation succeeded.

    2. Click Close.
Updated: 2019-08-14

Document ID: EDOC1000084098

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