Rules for NFSv4 Extensions and Minor Versions
RFC 8178
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Type |
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RFC - Proposed Standard
(July 2017; No errata)
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Last updated |
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2017-07-13
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Stream |
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Spencer Shepler
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Shepherd write-up |
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Show
(last changed 2017-04-14)
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| IESG |
IESG state |
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RFC 8178 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Spencer Dawkins
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Send notices to |
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"Spencer Shepler" <spencer.shepler@gmail.com>
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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No IC
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Internet Engineering Task Force (IETF) D. Noveck
Request for Comments: 8178 NetApp
Updates: 5661, 7862 July 2017
Category: Standards Track
ISSN: 2070-1721
Rules for NFSv4 Extensions and Minor Versions
Abstract
This document describes the rules relating to the extension of 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 RFC 5661 and
other RFCs defining minor versions.
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 7841.
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/rfc8178.
Copyright Notice
Copyright (c) 2017 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.
Noveck Standards Track [Page 1]
RFC 8178 NFSv4 Extension July 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Use of Keywords Defined in RFCs 2119 and 8174 . . . . . . 4
2.2. Use of Feature Statuses . . . . . . . . . . . . . . . . . 4
2.3. NFSv4 Versions . . . . . . . . . . . . . . . . . . . . . 5
3. Consolidation of Extension Rules . . . . . . . . . . . . . . 6
4. XDR Considerations . . . . . . . . . . . . . . . . . . . . . 7
4.1. XDR Extension . . . . . . . . . . . . . . . . . . . . . . 8
4.2. Rules for XDR Extension within NFSv4 . . . . . . . . . . 8
4.3. Handling of Protocol Elements by Responders . . . . . . . 9
4.4. Inter-version Interoperability . . . . . . . . . . . . . 11
4.4.1. Requirements for Knowledge of Protocol Elements . . . 11
4.4.2. Establishing Interoperability . . . . . . . . . . . . 12
4.4.3. Determining Knowledge of Protocol Elements . . . . . 14
4.5. XDR Overlay . . . . . . . . . . . . . . . . . . . . . . . 15
5. Other NFSv4 Protocol Changes . . . . . . . . . . . . . . . . 15
5.1. Field Interpretation and Use . . . . . . . . . . . . . . 15
5.2. Behavioral Changes . . . . . . . . . . . . . . . . . . . 16
6. Extending Existing Minor Versions . . . . . . . . . . . . . . 17
7. Minor Versions . . . . . . . . . . . . . . . . . . . . . . . 18
7.1. Creation of New Minor Versions . . . . . . . . . . . . . 18
8. Minor Version Interaction Rules . . . . . . . . . . . . . . . 18
8.1. Minor Version Identifier Transfer Issues . . . . . . . . 19
8.2. Minor Version Compatibility . . . . . . . . . . . . . . . 19
9. Correction of Existing Minor Versions and Features . . . . . 20
9.1. XDR Changes to Implement Protocol Corrections . . . . . . 21
9.2. XDR Corrections to OPTIONAL Features . . . . . . . . . . 21
9.3. XDR Corrections to REQUIRED Features . . . . . . . . . . 22
9.4. Addressing XDR Corrections in Later Minor Versions . . . 24
10. Security Considerations . . . . . . . . . . . . . . . . . . . 24
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 25
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 25
12.1. Normative References . . . . . . . . . . . . . . . . . . 25
12.2. Informative References . . . . . . . . . . . . . . . . . 25
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 25
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