Re: [nfsv4] Benjamin Kaduk's Discuss on draft-ietf-nfsv4-mv0-trunking-update-03: (with DISCUSS and COMMENT)

[Chuck Lever <[e-mail]>]

> On Jan 26, 2019, at 3:58 PM, Benjamin Kaduk <[e-mail]> wrote:
> 
> On Thu, Jan 24, 2019 at 04:22:28PM -0500, David Noveck wrote:
>> Following are the responses to your non-DISCUSS comments.
>> 
>>> Section 1
>>> 
>>>  As part of addressing this need, [RFC7931] introduces trunking into
>>>  NFS version 4.0 along with a trunking detection mechanism.  This
>>>  enables a client to determine whether two distinct network addresses
>>>  are connected to the same NFS version 4.0 server instance.
>>>  Nevertheless, the use of the concept of server-trunkability is the
>>>  same in both protocol versions.
>> 
>>> Er, what are the two protocol versions in question?  (I assume 4.0 and
>> 4.1,
>>> but you don't say 4.1 anywhere.)
>> 
>> 
>> 
>> This was addressed by the introductory paragraphs about locking prompted by
>> your DISCUSS.
>> 
>> The paragraphs were:
>> 
>> 
>> 
>> As part of addressing this need, [RFC7931] introduces trunking into NFS
>> version 4.0 along with a trunking detection mechanism.  A trunking
>> detection mechanism enables a client to determine whether two distinct
>> network addresses are connected to the same NFS version 4.0 server
>> instance.  This knowledge is necessary since, without it, a client unaware
>> of a trunking relationship between paths it is using simultaneous is likely
>> to become confused in ways described in [RF7530].
>> 
>> 
>> 
>> NFSv4.1 was defined with an integral means of trunking detection described
>> in [RFC5661], while NFSv4.0 initially did not have one, with it being added
>> by [RFC7931].  Nevertheless, the use of the concept of server-trunkability
>> is the same in both protocol versions
>> 
>>>  o  To provide NFS version 4.0 with a means of trunking discovery,
>>>     compatible with the means of trunking detection introduced by
>>>     [RFC7931].
>>> 
>>> We haven't yet mentioned that the distinction between "detection" and
>>> "discovery" is important, so it's probably worth a forward reference to the
>>> text below.
>> 
>> 
>> 
>> I think we can revise this bullet to read as follows in -04:
>> 
>> 
>> 
>>   - To provide NFS version 4.0 with a means of finding addresses trunkable
>>   with a given address. i.e., trunking discovery, compatible with the means
>>   of trunking detection introduced by [RFC7931].  For an explanation of
>>   trunking detection and trunking discovery see Section 3.
> 
> Thanks.

[ ... remaining comments snipped ... ]

If there are no more comments to resolve, I will assemble and submit -04 this
week based on these e-mail threads.


--
Chuck Lever