Object-Based Parallel NFS (pNFS) Operations

Document Type Expired Internet-Draft (nfsv4 WG)
Authors Benny Halevy  , Boaz Harrosh  , Brent Welch  , Brian Mueller
Last updated 2014-11-10 (latest revision 2014-05-03)
Stream IETF
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Parallel NFS (pNFS) extends Network File System version 4 (NFSv4) to allow clients to directly access file data on the storage used by the NFSv4 server. This ability to bypass the server for data access can increase both performance and parallelism, but requires additional client functionality for data access, some of which is dependent on the class of storage used, a.k.a. the Layout Type. The main pNFS operations and data types in NFSv4 Minor version 1 specify a layout- type-independent layer; layout-type-specific information is conveyed using opaque data structures whose internal structure is further defined by the particular layout type specification. This document specifies the NFSv4.1 Object-Based pNFS Layout Type as a companion to the main NFSv4 Minor version 1 specification. This document has been updated since the initial version to clarify and fix some of the RAID-related computations so they match current implementations.


Benny Halevy (bhalevy@primarydata.com)
Boaz Harrosh (bharrosh@panasas.com)
Brent Welch (welch@acm.org)
Brian Mueller (bmueller@panasas.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)