linux-kernel - Re: [PATCH 01/22] Revert "afs: Move UUID struct to linux/uuid.h"

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Message-ID: <22157.1496226795@warthog.procyon.org.uk>
Date:   Wed, 31 May 2017 11:33:15 +0100
From:   David Howells <dhowells@...hat.com>
To:     Christoph Hellwig <hch@....de>
Cc:     dhowells@...hat.com,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Amir Goldstein <amir73il@...il.com>,
        linux-fsdevel@...r.kernel.org, Shaohua Li <shli@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Steven Whitehouse <swhiteho@...hat.com>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        linux-xfs@...r.kernel.org, linux-raid@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 01/22] Revert "afs: Move UUID struct to linux/uuid.h"

Christoph Hellwig <hch@....de> wrote:

> Does the afs protocol require a v1 uuid or does it just use the formwat on
> the wire?

The format it uses on the wire is separate XDR encoding of each of the fields
in the uuid_v1 struct, counting the elements of the node[] array separately.

I'm not sure that the servers actually parse the contents of the UUID, but I
can't be sure as I don't have access to the source for all of them.

OpenAFS and AuriStor will at least accept the version field being 4, however.

David