I would rather lobby the Linux kernel people to give me 128bit IDs
That would solve all problems, as the chance of collision in a carefully
randomly selected 90something bit prefix are basically none.

Simo.

On Thu, 2011-10-27 at 20:40 +0000, Steven Jones wrote:
> Yes I can appreciate that, we have done the same thing im '500'...
> 
> oops....
> 
> As an educational setup we are looking to federate worldwide, that
> means Shibboleth or similar....a unique UID per academic world wide 
>  might be worthwhile....there wont be 2billion
> academics...students...well i guess that would one day be a "ipv4"
> problem.
> 
> Steven Jones
> 
> Technical Specialist - Linux RHCE
> 
> Victoria University, Wellington, NZ
> 
> 0064 4 463 6272
> 
> ________________________________________
> From: Rob Crittenden [rcrit...@redhat.com]
> Sent: Friday, 28 October 2011 9:34 a.m.
> To: Steven Jones
> Cc: Adam Young; freeipa-users@redhat.com
> Subject: Re: [Freeipa-users] Unique world wide UIDS
> 
> Steven Jones wrote:
> > Hi,
> >
> > Well if you understand Peak Oil and that the "green revolution" was
> actually truning fossil fuel into food ie we eat oil....only having
> 2billion UIDs wont be a problem.
> >
> > :/
> 
> Many, many organizations start with the same uid base, 500 or 1000.
> When
> company A buys company B there are tons and tons of uid collisions. If
> each started at a random start point then the chances of collision,
> while not zero, are much lower.
> 
> Our goal wasn't to guarantee uniqueness in the universe, just to make
> integration hopefully easier in the future when namespaces are merged.
> 
> rob
> 
> 
> _______________________________________________
> Freeipa-users mailing list
> Freeipa-users@redhat.com
> https://www.redhat.com/mailman/listinfo/freeipa-users

-- 
Simo Sorce * Red Hat, Inc * New York

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