linux-kernel - Re: very poor ext3 write performance on big filesystems?

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Message-ID: <20080218153501.GE25098@mit.edu>
Date:	Mon, 18 Feb 2008 10:35:01 -0500
From:	Theodore Tso <tytso@....edu>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Tomasz Chmielewski <mangoo@...g.org>,
	LKML <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: very poor ext3 write performance on big filesystems?

On Mon, Feb 18, 2008 at 04:57:25PM +0100, Andi Kleen wrote:
> > Use cp
> > or a tar pipeline to move the files.
> 
> Are you sure cp handles hardlinks correctly? I know tar does,
> but I have my doubts about cp.

I *think* GNU cp does the right thing with --preserve=links.  I'm not
100% sure, though --- like you, probably, I always use tar for moving
or copying directory hierarchies.

  	     	     	       	       - Ted
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