Hwisenbug NFS FLAG DAY

[Chuck Forsberg WA7KGX]

On 09/26/2013 11:02 AM, J. Bruce Fields wrote:
> On Tue, Sep 24, 2013 at 07:51:35PM -0700, Adam Williamson wrote:
>> On Tue, 2013-09-24 at 16:58 -0700, Chuck Forsberg WA7KGX wrote:
>>> On 09/24/2013 01:11 PM, J. Bruce Fields wrote:
>>>> On Tue, Sep 24, 2013 at 12:07:45AM -0700, Chuck Forsberg WA7KGX wrote:
>>>>> After upgrading from Korora 19 to Heisenbug,the following line
>>>>> in /etc/exports no longer exports an NFS share that SCO Openserver 5
>>>>> can mount.
>>>>>
>>>>> /u 192.168.1.1/255.255.255.0(rw,async,insecure)
>>>>>
>>>>> The following appears in /var/log/messages:
>>>>> authenticated mount request from 192.168.1.35:1022 for /u (/u)
>>>>>
>>>>> But SCO cannon mount, complaining PROGRAM VERS MISMATCH
>>>>> Protocol not available.
>>>> If you edit the RPCNFSDARGS line in /etc/sysconfig/nfs line to
>>>>
>>>> 	RPCNFSDARGS='-V2'
>>>>
>>>> and restart nfsd, does the problem go away?
>>>>
>>>> I think v2 might have gotten turned off by default.
>>>>
>>>> NFSv3 came out nearly 20 years ago.  Sigh.
>>>>
>>>> --b.
>>> That fixes it.   Why was the default changed?
>> Because NFSv2 is older than frickin' Old MacDonald at this point, I
>> guess?
> Right.  We're considering shutting down v2 completely at some point, so
> the first step was to turn it off by default and see if that affects
> anyone.
>
> I guess it does.
>
> It'd be interesting to know if this was something critical or more of a
> stunt?  ("How long can I keep this ancient machine running?")
>
> I'm inclined to be conservative about turning off the old protocol, but
> it is terribly old and there's an understandable desire to trim the test
> matrix a bit....
>
> --b.
>
>>> Something to add to the release notes.
>> Probably, yes. The way to do this was mentioned in your other 'flag day'
>> thread.
>> -- 
>> Adam Williamson
>> Fedora QA Community Monkey
>> IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
>> http://www.happyassassin.net
>>
>>
>>
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Not a stunt.  I have some files that depend on Unix programs.
Every now and then there is a need for these old tools.

Why disable NFS V2?  If the client can use a newer version,
it will do so automatically, will it not?  If not, why break things that
don't need to be broken?

-- 
      Chuck Forsberg WA7KGX   caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430