linux-kernel - Re: Copy on write hard links?

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Message-ID: <20131213225802.GA21911@logfs.org>
Date:	Fri, 13 Dec 2013 17:58:02 -0500
From:	Jörn Engel <joern@...fs.org>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	Rob Landley <rob@...dley.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Copy on write hard links?

On Wed, 25 September 2013 16:28:53 +0200, Thomas Meyer wrote:
> 
> I wonder how hard it would be to implement this on vfs layer?

As an ugly hack: a few weeks maybe.  Did it back in 2005 or so.  If
you have higher standards, you will need support from the underlying
filesystem.  Especially in order to make copying a large file on slow
storage anything but a nightmare.

Jörn

--
When in doubt, use brute force.
-- Ken Thompson
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