From: Chuck Lever <chuck.lever@oracle.com>
Subject: Re: Status of NFS over IPv6
Date: Mon, 02 Jul 2007 12:23:06 -0400
Message-ID: <4689266A.1000607@oracle.com>
References: <20070629123747.GA1034@uio.no> <46858153.8060109@oracle.com>
	<4688C70C.2050801@ext.bull.net> <4688E296.2040101@bull.net>
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Cc: Le Rouzic <aime.le-rouzic@bull.net>,
	=?ISO-8859-1?Q?bon?= <aurelien.charbon@ext.bull.net>,
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To: NFSv4 ML <nfsv4@linux-nfs.org>, nfs@lists.sourceforge.net
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Le Rouzic wrote:
>>> While there is some interest in IPv6 among some of Linux's corporate=20
>>> sponsors, there really isn't an overwhelming "killer" requirement for=
=20
>>> IPv6, so there isn't much motivation to get all this completed.  I=20
>>> have to admit I'm pretty burned out on all this because of how=20
>>> complicated it has all become.  I'd be happy if someone stepped=20
>>> forward and volunteered to help or take over the integration.
>>>  =20
> Some basic tests have been also done on the submitted Aur=E9lien's patc=
hs
> and we will be running the robustness tests we are regularly doing for=20
> ipv4.
> See also at http://nfsv4.bullopensource.org/doc/rpc_testsuite.php
> for this list of tests (cthon04, ffsb, fsx...)
>=20
>>
>> We hope the interest of community about IPv6 will grow.
>> Feel free to send comments on the code.
>> =20
>>
> Some customers are already asking it but  were waiting of its availibit=
y.
> There are also products based on NFSV4 features which are interested in=
.

Yeah, it's kind of unfortunate that we can't be completely specific=20
about the requests/requirements/use cases.  But here's what I know:

1.  Apparently there is a bureaucratic (ie non-technical) requirement=20
from the US Federal government for IPv6 support in new computer software=20
deployments.  I forget when this requirement kicks in, or what exactly=20
"IPv6 support" really entails.

2.  The APAC market wants IPv6 because of an explosion of individual IP=20
network accessors, although arguably that can be addressed for a little=20
while with judicious application of NAT routers.

Otherwise, the companies I've worked for recently have had no real=20
customer requests for IPv6 support in NFS.

NFS community resources are focused largely on NFSv4.1 and pNFS design=20
and implementation.  However, here's some of what I think we need to get=20
IPv6 done:

+  A coherent design for handling IPv6 address caching and export rules=20
on the server side

+  Help from the netdev folks with reviewing our proposed IPv6 changes

+  A cunning plan to stage the integration of all the various pieces

+  Beta testers (ie real environments that can deploy NFS over IPv6 in=20
real conditions)

+  A whiff of project planning to help us know what the real deadlines ar=
e

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