[nfsv4] RFC 9737 on Reporting Errors in NFSv4.2 via LAYOUTRETURN

A new Request for Comments is now available in online RFC libraries.

        RFC 9737

        Title:      Reporting Errors in NFSv4.2 via 
                    LAYOUTRETURN 
        Author:     T. Haynes,
                    T. Myklebust
        Status:     Standards Track
        Stream:     IETF
        Date:       February 2025
        Mailbox:    loghyr@gmail.com,
                    trondmy@hammerspace.com
        Pages:      6
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-nfsv4-layrec-04.txt

        URL:        https://www.rfc-editor.org/info/rfc9737

        DOI:        10.17487/RFC9737

The Parallel Network File System (pNFS) allows for a file's metadata
and data to be on different servers (i.e., the metadata server (MDS)
and the data server (DS)). When the MDS is restarted, the client can
still modify the data file component. During the recovery phase of
startup, the MDS and the DSs work together to recover state. If the
client has not encountered errors with the data files, then the state
can be recovered and the resilvering of the data files can be
avoided. With any errors, there is no means by which the client can
report errors to the MDS. As such, the MDS has to assume that a file
needs resilvering. This document presents an extension to RFC 8435 to
allow the client to update the metadata via LAYOUTRETURN and avoid
the resilvering.

This document is a product of the Network File System Version 4 Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
standardization state and status of this protocol.  Distribution of this 
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