NFSv4 Version Management
draft-ietf-nfsv4-versioning-01

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Last updated 2015-07-12
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NFSv4                                                          D. Noveck
Internet-Draft                                                        HP
Intended status: Standards Track                            July 2, 2015
Expires: January 3, 2016

                        NFSv4 Version Management
                     draft-ietf-nfsv4-versioning-01

Abstract

   This document describes the management of versioning within the NFSv4
   family of protocols.  It covers the creation of minor versions, the
   addition of optional features to existing minor versions, and the
   correction of flaws in features already published as Proposed
   Standards.  The rules relating to the construction of minor versions
   and the interaction of minor version implementations that appear in
   this document supersede the minor versioning rules in RFC5661.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on January 3, 2016.

Copyright Notice

   Copyright (c) 2015 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

Noveck                   Expires January 3, 2016                [Page 1]
Internet-Draft               next-versioning                   July 2015

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Existing Minor Versions . . . . . . . . . . . . . . . . .   3
     1.2.  Updated NFSv4 Version Management Framework  . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Consolidation of Version Management Rules . . . . . . . . . .   6
   4.  NFSv4 Protocol Changes  . . . . . . . . . . . . . . . . . . .   7
     4.1.  XDR Extension . . . . . . . . . . . . . . . . . . . . . .   7
       4.1.1.  XDR Extension in General  . . . . . . . . . . . . . .   8
       4.1.2.  Particulars of XDR Extension within NFSv4 . . . . . .   9
       4.1.3.  Rules for XDR Extension within NFSv4  . . . . . . . .   9
     4.2.  Non-XDR Protocol Changes  . . . . . . . . . . . . . . . .  10
       4.2.1.  Field Interpretation and Use  . . . . . . . . . . . .  10
       4.2.2.  Behavioral Changes  . . . . . . . . . . . . . . . . .  11
       4.2.3.  Rules for non-XDR changes . . . . . . . . . . . . . .  11
     4.3.  Specification of Associated Protocols . . . . . . . . . .  12
       4.3.1.  Associated Protocols via pNFS Mapping Types . . . . .  12
       4.3.2.  Additional Forms of Associated Protocols  . . . . . .  13
   5.  Documentation Approach  . . . . . . . . . . . . . . . . . . .  14
     5.1.  Indexing material . . . . . . . . . . . . . . . . . . . .  14
   6.  NFSv4 Features  . . . . . . . . . . . . . . . . . . . . . . .  14
     6.1.  Rules for Feature Construction  . . . . . . . . . . . . .  15
     6.2.  Feature Statuses  . . . . . . . . . . . . . . . . . . . .  15
     6.3.  Feature Discovery . . . . . . . . . . . . . . . . . . . .  16
     6.4.  Feature Specification Documents . . . . . . . . . . . . .  16
     6.5.  Feature Incorporation . . . . . . . . . . . . . . . . . .  17
   7.  Extensions within Minor Versions  . . . . . . . . . . . . . .  18
   8.  Adding Features to Extensible Minor Versions  . . . . . . . .  18
     8.1.  Use of Feature Specification Documents  . . . . . . . . .  18
     8.2.  Compatibility Issues  . . . . . . . . . . . . . . . . . .  19
       8.2.1.  Compatibility Issues for Messages Sent to Servers . .  19
       8.2.2.  Compatibility Issues for Messages Sent to Clients . .  21
     8.3.  Additional Documents to be Produced . . . . . . . . . . .  22
       8.3.1.  Minor Version Indexing Document . . . . . . . . . . .  22
       8.3.2.  Consolidated XDR Document . . . . . . . . . . . . . .  22
       8.3.3.  XDR Assignment Document . . . . . . . . . . . . . . .  23
       8.3.4.  Transition of Documents to RFC's  . . . . . . . . . .  24
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