linux-kernel - Re: Finding hardlinks

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Message-ID:  <mj+md-20070103.124124.9123.albireo@ucw.cz>
Date:	Wed, 3 Jan 2007 13:45:11 +0100
From:	Martin Mares <mj@....cz>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	pavel@....cz, bhalevy@...asas.com, arjan@...radead.org,
	mikulas@...ax.karlin.mff.cuni.cz, jaharkes@...cmu.edu,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	nfsv4@...f.org
Subject: Re: Finding hardlinks

Hello!

> High probability is all you have.  Cosmic radiation hitting your
> computer will more likly cause problems, than colliding 64bit inode
> numbers ;)

No.

If you assign 64-bit inode numbers randomly, 2^32 of them are sufficient
to generate a collision with probability around 50%.

				Have a nice fortnight
-- 
Martin `MJ' Mares                          <mj@....cz>   http://mj.ucw.cz/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
A Bash poem: time for echo in canyon; do echo $echo $echo; done
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