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Network File System Version 4 (nfsv4)

Last Modified: 2007-11-21

Additional information is available at tools.ietf.org/wg/nfsv4

Chair(s):

  • Brian Pawlowski <beepy@netapp.com>

  • Spencer Shepler <spencer.shepler@sun.com>

    Transport Area Director(s):

  • Magnus Westerlund <magnus.westerlund@ericsson.com>
  • Lars Eggert <lars.eggert@nokia.com>

    Transport Area Advisor:

  • Lars Eggert <lars.eggert@nokia.com>

    Mailing Lists:

    General Discussion: nfsv4@ietf.org
    To Subscribe: https://www1.ietf.org/mailman/listinfo/nfsv4
    Archive: http://www.ietf.org/mail-archive/web/nfsv4/index.html

    Description of Working Group:

    The objective of this working group is to advance the state of NFS
    technology by producing specifications to extend the original NFS
    Version 4 work (RFC 3010) to provide additional capabilities, as
    described below.

    o NFS version 4

      Advance the protocol along the standards track, coordinating the
      development of test suites to provide a high level of implementation
      quality. The ONC RPC standards that NFSv4 references must also be
      advanced. This includes work to make NFSv4 and the underlying ONC RPC
      protocol compatible with IPv6.  Specifically, we will advance RFC
      3010, RFC 1831, RFC 1833 and RFC 2203 to Draft Standard. The working
      group will help advance related security RFCs, specifically through
      the definition of a method to advance APIs.

    o Replication and Migration

      The original working group defined a mechanism for NFS clients and
      servers to support replication and migration of data transparently
      to an application.  Left undefined in the initial work was the
      server back end migration and replication mechanism.  The working
      group will produce a draft submission of a replication/migration
      protocol that supports NFS Version 4 clients - needed to create and
      maintain replicated filesystems as well as migrating filesystems
      from one location to another -  and servers for consideration as
      Proposed Standard.

    o Management

      The working group will produce a draft submission for consideration
      as Proposed Standard of a management MIBs to provide better
      management and administration capabilities for NFS and ONC RPC.

    o Minor Versions

      NFS Version 4 contains within it the capability for minor versioning.
      Some discussions within the working group suggest addressing
      additional requirements over the original charter.  The WG will work
      to identify additional requirements for NFSv4 and determine if they
      are appropriate and worthwhile for a minor version.  This work may
      lead to proposals for additional work items.  If it does a specific
      proposal to add these work items to the charter will be forwarded to
      the IESG and IAB.

    o RDMA/RDDP enabling

      The performance benefit of RDMA/RDDP transports in NFS-related
      applications, by reducing the overhead of data and metadata
      exchange, has been demonstrated sufficiently such that the
      working group will pursue in parallel enabling NFS and RPC over
      the transport defined by the RDDP working group. The WG will
      restrict its initial activities to defining the problem
      statement and specifying the requirements for possible
      extensions to RPC and NFS (in the context of a minor
      revision).

    Goals and Milestones:

    Done  Issue strawman Internet-Draft for v4
    Done  Submit Initial Internet-Draft of requirements document
    Done  Submit Final Internet-Draft of requirements document
    Done  AD reassesses WG charter
    Done  Submit v4 Internet-Draft sufficient to begin prototype implementations
    Done  Begin Interoperability testing of prototype implementations
    Done  Submit NFS version 4 to IESG for consideration as a Proposed Standard.
    Done  Conduct final Interoperability tests
    Done  Conduct full Interoperability tests for all NFSv4 features
    Done  Update API advancement draft
    Done  Form core design team to work on NFS V4 migration/replication requirements and protocol
    Done  Submit revised NFS Version 4 specification (revision to RFC 3010) to IESG for consideration as a Proposed Standard
    Done  Strawman NFS V4 replication/migration protocol proposal submitted as an ID
    Mar 2003  ADs to submit API advancement internet draft as informational RFC (needed to advance GSSAPI to Draft Standard to allow advancement of NFS Version 4)
    Mar 2003  Continued interoperability testing of NFS Version 4
    Apr 2003  Internet draft on NFS V4 migration/replication requirements
    Apr 2003  AD review of NFS V4 migration/replication requirements draft
    Apr 2003  Creation of internet draft on ONC RPC MIB
    Apr 2003  Revision of internet draft on NFS MIB
    Apr 2003  Draft problem statement I-D for NFS/RPC/RDDP submitted
    May 2003  Document full Interoperability tests for all NFSv4 features
    Jun 2003  Depending on results of AD review of NFS Version 4 migration/replication requirements document, review scope of task
    Jun 2003  Submit related Proposed Standards required by NFS Version 4 for consideration as Draft Standards to IESG - RFCs 1831, 1833, 2203, 2078, 2744, RFC 1964, & 2847
    Jun 2003  Draft requirements document I-D for NFS/RPC/RDDP submitted
    Jun 2003  Submit ONC RPC and NFS MIBs to IESG for consideration as Proposed Standards
    Jun 2003  Submit an NFS V4 migration/replication protocol to IESG for consideration as a Proposed Standard
    Jun 2003  Submit report on results of NFS version 4 RFC interoperability testing
    Jul 2003  AD review of NFS/RPC/RDDP progress and charter
    Jul 2003  Interoperability tests of NFS V4 migration/replication
    Aug 2003  Submit revised NFS Version 4 Proposed Standard for consideration as Draft Standard to IESG

    Internet-Drafts:

    RPC: Remote Procedure Call Protocol Specification Version 2 draft-ietf-nfsv4-rfc1831bis-07.txt (57280 bytes)
    NFS RDMA Problem Statement (36940 bytes)
    RDMA Transport for ONC RPC (83376 bytes)
    NFS Direct Data Placement (22841 bytes)
    NFS Version 4 Minor Version 1 (1374965 bytes)
    pNFS Block/Volume Layout (61967 bytes)
    Object-based pNFS Operations (62418 bytes)
    NFSv4 Minor Version 1 XDR Description (125334 bytes)

    Request For Comments:

    NFS Version 2 and Version 3 Security Issues and the NFS Protocol's Use of RPCSEC_GSS and Kerberos V5 (RFC 2623) (42521 bytes)
    NFS Version 4 Design Considerations (RFC 2624) (52891 bytes)
    NFS version 4 (RFC 3010) (450434 bytes) obsoletes RFC 1813,RFC 1094/ obsoleted by RFC 3530
    Network File System (NFS) version 4 Protocol (RFC 3530) (600986 bytes) obsoletes RFC 3010
    XDR: External Data Representation Standard (RFC 4506) (55477 bytes)
    IETF Secretariat - Please send questions, comments, and/or suggestions to ietf-web@ietf.org.

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