Network File System (NFS) Upper Layer Binding To RPC-Over-RDMA
draft-ietf-nfsv4-rfc5667bis-01
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Chuck Lever
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2016-06-30
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Network File System Version 4 C. Lever, Ed.
Internet-Draft Oracle
Obsoletes: 5667 (if approved) June 30, 2016
Intended status: Standards Track
Expires: January 1, 2017
Network File System (NFS) Upper Layer Binding To RPC-Over-RDMA
draft-ietf-nfsv4-rfc5667bis-01
Abstract
This document specifies the Upper Layer Bindings of Network File
System (NFS) protocol versions to RPC-over-RDMA transports. Such
Upper Layer Bindings are required to enable RPC-based protocols to
use direct data placement when conveying large data payloads on RPC-
over-RDMA transports. This document obsoletes RFC 5667.
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 1, 2017.
Copyright Notice
Copyright (c) 2016 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
Lever Expires January 1, 2017 [Page 1]
Internet-Draft NFS On RPC-Over-RDMA June 2016
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
1.2. Changes Since RFC 5667 . . . . . . . . . . . . . . . . . 3
1.3. Planned Changes To This Document . . . . . . . . . . . . 4
2. Conveying NFS Operations On RPC-Over-RDMA Transports . . . . 4
2.1. Use Of The Read List . . . . . . . . . . . . . . . . . . 4
2.2. Use Of The Write List . . . . . . . . . . . . . . . . . . 5
2.3. Construction Of Individual Chunks . . . . . . . . . . . . 5
2.4. Use Of Long Calls And Replies . . . . . . . . . . . . . . 5
3. NFS Versions 2 And 3 Upper Layer Binding . . . . . . . . . . 5
4. NFS Version 4 Upper Layer Binding . . . . . . . . . . . . . . 6
4.1. NFS Version 4 COMPOUND Considerations . . . . . . . . . . 7
4.2. NFS Version 4 Callbacks . . . . . . . . . . . . . . . . . 8
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
6. Security Considerations . . . . . . . . . . . . . . . . . . . 9
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 9
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 9
8.1. Normative References . . . . . . . . . . . . . . . . . . 9
8.2. Informative References . . . . . . . . . . . . . . . . . 10
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 11
1. Introduction
Remote Direct Memory Access Transport for Remote Procedure Call,
Version One [I-D.ietf-nfsv4-rfc5666bis] (RPC-over-RDMA) enables the
use of direct data placement to accelerate the transmission of large
data payloads associated with RPC transactions.
Each RPC-over-RDMA transport header can convey lists of memory
locations involved in direct transfers of data payloads. These
memory locations correspond to XDR data items defined in an Upper
Layer Protocol (such as NFS).
To facilitate interoperation, RPC client and server implementations
must agree on what XDR data items in which RPC procedures are
eligible for direct data placement (DDP).
This document specifies the set of XDR data items in each of the
following NFS protocol versions that are eligible for DDP. It also
contains additional material required of Upper Layer Bindings as
specified in [I-D.ietf-nfsv4-rfc5666bis].
o NFS Version 2 [RFC1094]
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o NFS Version 3 [RFC1813]
o NFS Version 4.0 [RFC7530]
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