Network File System (NFS) Version 4 Minor Version 1 Protocol
RFC 5661

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 29

Internet Engineering Task Force (IETF)                   S. Shepler, Ed.
Request for Comments: 5661                               Storspeed, Inc.
Category: Standards Track                                 M. Eisler, Ed.
ISSN: 2070-1721                                           D. Noveck, Ed.
                                                                  NetApp
                                                            January 2010

      Network File System (NFS) Version 4 Minor Version 1 Protocol

Abstract

   This document describes the Network File System (NFS) version 4 minor
   version 1, including features retained from the base protocol (NFS
   version 4 minor version 0, which is specified in RFC 3530) and
   protocol extensions made subsequently.  Major extensions introduced
   in NFS version 4 minor version 1 include Sessions, Directory
   Delegations, and parallel NFS (pNFS).  NFS version 4 minor version 1
   has no dependencies on NFS version 4 minor version 0, and it is
   considered a separate protocol.  Thus, this document neither updates
   nor obsoletes RFC 3530.  NFS minor version 1 is deemed superior to
   NFS minor version 0 with no loss of functionality, and its use is
   preferred over version 0.  Both NFS minor versions 0 and 1 can be
   used simultaneously on the same network, between the same client and
   server.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc5661.

Shepler, et al.              Standards Track                    [Page 1]
RFC 5661                         NFSv4.1                    January 2010

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Shepler, et al.              Standards Track                    [Page 2]
RFC 5661                         NFSv4.1                    January 2010

Table of Contents

   1. Introduction ....................................................9
      1.1. The NFS Version 4 Minor Version 1 Protocol .................9
      1.2. Requirements Language ......................................9
      1.3. Scope of This Document .....................................9
      1.4. NFSv4 Goals ...............................................10
      1.5. NFSv4.1 Goals .............................................10
      1.6. General Definitions .......................................11
      1.7. Overview of NFSv4.1 Features ..............................13
      1.8. Differences from NFSv4.0 ..................................17
   2. Core Infrastructure ............................................18
      2.1. Introduction ..............................................18
      2.2. RPC and XDR ...............................................19
      2.3. COMPOUND and CB_COMPOUND ..................................22
      2.4. Client Identifiers and Client Owners ......................23
      2.5. Server Owners .............................................28
      2.6. Security Service Negotiation ..............................29
      2.7. Minor Versioning ..........................................34
      2.8. Non-RPC-Based Security Services ...........................37
      2.9. Transport Layers ..........................................37
      2.10. Session ..................................................40
   3. Protocol Constants and Data Types ..............................86
      3.1. Basic Constants ...........................................86
      3.2. Basic Data Types ..........................................87
      3.3. Structured Data Types .....................................89
   4. Filehandles ....................................................97
      4.1. Obtaining the First Filehandle ............................98
      4.2. Filehandle Types ..........................................99
      4.3. One Method of Constructing a Volatile Filehandle .........101