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Re: [nfsv4] RFC 7530: Available attributes for READDIR and Absent File Systems

Vitaliy Gusev <gusev.vitaliy@gmail.com> Mon, 22 May 2017 12:27 UTC

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From: Vitaliy Gusev <gusev.vitaliy@gmail.com>
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Date: Mon, 22 May 2017 15:27:42 +0300
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To: David Noveck <davenoveck@gmail.com>
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Subject: Re: [nfsv4] RFC 7530: Available attributes for READDIR and Absent File Systems
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> On 22 May 2017, at 14:42, David Noveck <davenoveck@gmail.com> wrote:
> 
> > In other words, can other attributes than fs_locations, fsid, mounted_on_fileid, rdattr_error
> > be available for a root of absent filesystem in READDIR reply?
> 
> According to the spec. yes.  Realistically, it is hard to come up with a case where the server would have this information or in which a client would be prepared to do anything with it.

It may introduce double-meaning because in this case some attributes might be
obtained only via READDIR but not via GETATTR.

Is it worth preparing Errata for RFC 7530 Section 16.24.4 or Section 8.3.2 with
description that READDIR for an entry cannot return more attributes (except rdattr_error)
than GEATTR returns?

———
Vitaliy Gusev

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