The usual problem with this sort of "handle this super-rare event when it
happens" code is that it is poorly tested in practice. Should you trust it?


On Thu, Sep 26, 2013 at 11:46 PM, Robbert van Dalen <
[email protected]> wrote:

> Hi,
>
> ZFS has de-duplication built on top of SHA256 hashes.
> If the verify option is also enabled, it is possible for ZFS to work
> around detect hash collisions (although this option slows things down
> further).
>
> But ZFS can be considered as a kind of 'central authority' so its
> de-duplication scheme may not work in a distributed setting.
>
> Regards,
> Robbert.
>
> On Sep 27, 2013, at 2:50 AM, Wolfgang Eder <[email protected]> wrote:
>
> > hi,
> > in recent discussions on this list, the idea of using hashes to
> > identify or even name things is often mentioned.
> > in this context, hashes are treated as being unique;
> >
> > albeit unlikely, it *is* possible that hashes are equal
> > for two distinct things. are there ideas about
> > how to handle such a situation?
> >
> > thanks and kind regards
> > wolfgang
> > _______________________________________________
> > fonc mailing list
> > [email protected]
> > http://vpri.org/mailman/listinfo/fonc
>
> _______________________________________________
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>
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