linux-kernel - Re: Finding hardlinks

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Date:	Tue, 9 Jan 2007 20:53:10 +0100
From:	Frank van Maarseveen <frankvm@...nkvm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Miklos Szeredi <miklos@...redi.hu>, pavel@....cz,
	mikulas@...ax.karlin.mff.cuni.cz, matthew@....cx,
	bhalevy@...asas.com, arjan@...radead.org, jaharkes@...cmu.edu,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	nfsv4@...f.org
Subject: Re: Finding hardlinks

On Tue, Jan 09, 2007 at 11:26:25AM -0500, Steven Rostedt wrote:
> On Mon, 2007-01-08 at 13:00 +0100, Miklos Szeredi wrote:
> 
> > > 50% probability of false positive on 4G files seems like very ugly
> > > design problem to me.
> > 
> > 4 billion files, each with more than one link is pretty far fetched.
> > And anyway, filesystems can take steps to prevent collisions, as they
> > do currently for 32bit st_ino, without serious difficulties
> > apparently.
> 
> Maybe not 4 billion files, but you can get a large number of >1 linked
> files, when you copy full directories with "cp -rl".

Yes but "cp -rl" is typically done by _developers_ and they tend to
have a better understanding of this (uh, at least within linux context
I hope so).

Also, just adding hard-links doesn't increase the number of inodes.

-- 
Frank
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