Using DNS SRV to Specify a Global File Namespace with NFS Version 4
RFC 6641
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RFC - Proposed Standard
(June 2012; No errata)
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2015-10-14
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draft-everhart-nfsv4-namespace-via-dns-srv
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IETF
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(last changed 2011-08-17)
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RFC 6641 (Proposed Standard)
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Martin Stiemerling
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Internet Engineering Task Force (IETF) C. Everhart
Request for Comments: 6641 W. Adamson
Category: Standards Track NetApp
ISSN: 2070-1721 J. Zhang
Google
June 2012
Using DNS SRV to Specify a Global File Namespace with NFS Version 4
Abstract
The NFS version 4 (NFSv4) protocol provides a mechanism for a
collection of NFS file servers to collaborate in providing an
organization-wide file namespace. The DNS SRV Resource Record (RR)
allows a simple way for an organization to publish the root of its
file system namespace, even to clients that might not be intimately
associated with such an organization. The DNS SRV RR can be used to
join these organization-wide file namespaces together to allow
construction of a global, uniform NFS file namespace.
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/rfc6641.
Everhart, et al. Standards Track [Page 1]
RFC 6641 NFSv4 Global Namespace with DNS SRV June 2012
Copyright Notice
Copyright (c) 2012 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
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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.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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material may not have granted the IETF Trust the right to allow
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Without obtaining an adequate license from the person(s) controlling
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it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Background ......................................................3
2. Requirements Notation ...........................................3
3. Use of the SRV Resource Record in DNS ...........................3
4. Integration with Use of NFS Version 4 ...........................5
4.1. Globally Useful Names: Conventional Mount Point ............5
4.2. Mount Options ..............................................6
4.3. File System Integration Issues .............................6
4.4. Multicast DNS ..............................................7
5. Where Is This Integration Carried Out? ..........................7
6. Security Considerations .........................................7
7. IANA Considerations .............................................9
8. References ......................................................9
8.1. Normative References .......................................9
8.2. Informative References ....................................10
Everhart, et al. Standards Track [Page 2]
RFC 6641 NFSv4 Global Namespace with DNS SRV June 2012
1. Background
Version 4 of the NFS protocol [RFC3530] introduced the fs_locations
attribute. Use of this attribute was elaborated further in the NFSv4
minor version 1 protocol [RFC5661], which also defined an extended
version of the attribute as fs_locations_info. With the advent of
these attributes, NFS servers can cooperate to build a file namespace
that crosses server boundaries. The fs_locations and
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