Parallel NFS (pNFS) Block Disk Protection
RFC 6688
Document | Type |
RFC - Proposed Standard
(July 2012; No errata)
Updates RFC 5663
|
|
---|---|---|---|
Authors | David Black , Jason Glasgow , Sorin Faibish | ||
Last updated | 2015-10-14 | ||
Replaces | draft-faibish-nfsv4-pnfs-block-disk-protection | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Spencer Shepler | ||
Shepherd write-up | Show (last changed 2012-01-11) | ||
IESG | IESG state | RFC 6688 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Martin Stiemerling | ||
IESG note | Spencer Shepler (sshepler@microsoft.com) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) D. Black, Ed. Request for Comments: 6688 EMC Corporation Updates: 5663 J. Glasgow Category: Standards Track Google ISSN: 2070-1721 S. Faibish EMC Corporation July 2012 Parallel NFS (pNFS) Block Disk Protection Abstract Parallel NFS (pNFS) extends the Network File System version 4 (NFSv4) to enable direct client access to file data on storage devices and bypass the NFSv4 server. This can increase both performance and parallelism, but it requires additional client functionality, some of which depends upon the type of storage used. The pNFS specification for block storage (RFC 5663) describes how clients can identify the volumes used for pNFS, but this mechanism requires communication with the NFSv4 server. This document updates RFC 5663 to add a mechanism that enables identification of block storage devices used by pNFS file systems without communicating with the server. This enables clients to control access to pNFS block devices when the client initially boots, as opposed to waiting until the client can communicate with the NFSv4 server. 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/rfc6688. Black, et al. Standards Track [Page 1] RFC 6688 pNFS Block Disk Protection July 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 (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. Table of Contents 1. Introduction ....................................................3 2. Conventions Used in This Document ...............................4 3. GPT Partition Table Entry .......................................4 4. Security Considerations .........................................5 5. References ......................................................5 5.1. Normative References .......................................5 5.2. Informative References .....................................6 6. Acknowledgements.................................................6 Black, et al. Standards Track [Page 2] RFC 6688 pNFS Block Disk Protection July 2012 1. Introduction Figure 1 shows the overall architecture of a Parallel NFS (pNFS) system: +-----------+ |+-----------+ +-----------+ ||+-----------+ | | ||| | NFSv4.1 + pNFS | | +|| Clients |<------------------------------>| MDS | +| | | | +-----------+ | | ||| +-----------+ ||| | ||| | ||| Storage +-----------+ | ||| Protocol |+-----------+ | ||+----------------||+-----------+ Control | |+-----------------||| | Protocol | +------------------+|| Storage |------------+ +| Devices | +-----------+ Figure 1. pNFS Architecture In this document, "storage device" is used as a general term for a data server and/or storage server for any pNFS layout type. TheShow full document text