File System Extended Attributes in NFSv4

The information below is for an old version of the document
Document Type Expired Internet-Draft (nfsv4 WG)
Last updated 2016-02-19 (latest revision 2015-08-18)
Stream IETF
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Expired & archived
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Stream WG state WG Document
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document proposes extensions to the NFSv4 protocol which allow file extended attributes (hereinafter also referred to as xattrs) to be manipulated using NFSv4. An xattr is a file system feature that allows opaque metadata, not interpreted by the file system, to be associated with files and directories. Such support is present in many modern local file systems. New file attributes are proposed to allow clients to query the server for xattr support, and new operations to get and set xattrs on file system objects are provided.


Manoj Naik (
Marc Eshel (

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