[Nsi-wg] New state machine with two phase reserve and modify

[John MacAuley]

The general consensus was that if we are doing a two phase modify then we might as well do a two phase reserve.  I am not hung up on the two phase reserve since the existing model does do a pseudo two phase.  I absolutely do believe we need a two phase modify though, otherwise things can get extremely pooched,

Perhaps some of the others who requested a two phase reserve could jump in and provide feedback?

John.

On 2012-07-04, at 8:20 AM, Henrik Thostrup Jensen wrote:

> Hi
> 
> On Mon, 2 Jul 2012, John MacAuley wrote:
> 
>> Here is the new and improved NSI CS state machine fresh off the presses and ready for your viewing pleasure.  Please study it and prepare questions for the Wednesday call.
> 
> I missed the call last week (because I love sitting in airplanes), but could you please explain why we need two phase reserve? (and modify as well though that one makes more sense).
> 
> IDCP have two phase ... everything (more or less), and the main result of this was that the implementations became extremely complex and error handling even worse (often lacking).
> 
> Two phase looks really nice from a distance. Until you are in the middle of it and there are crying babies and bleeding people everywhere :-).
> 
> 
>    Best regards, Henrik
> 
> Henrik Thostrup Jensen <htj at nordu.net>
> Software Developer, NORDUnet
> 
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