From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Tomas <alex@clusterfs.com>
Subject: Re: [RFC 0/13] extents and 48bit ext3
Date: Fri, 09 Jun 2006 20:33:18 +0400
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Cc: Jeff Garzik <jeff@garzik.org>,
	ext2-devel <ext2-devel@lists.sourceforge.net>,
	linux-kernel@vger.kernel.org, Christoph Hellwig <hch@infradead.org>,
	Mingming Cao <cmm@us.ibm.com>, linux-fsdevel@vger.kernel.org,
	Alex Tomas <alex@clusterfs.com>
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To: "Mike Snitzer" <snitzer@gmail.com>
In-Reply-To: <170fa0d20606090921x71719ad3m7f9387ba15413b8f@mail.gmail.com>
	(Mike Snitzer's message of "Fri, 9 Jun 2006 12:21:39 -0400")
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>>>>> Mike Snitzer (MS) writes:

 MS> precludes their ability to boot older kernels (steps can be taken to
 MS> make them well aware of this). The "real world situation" you refer
 MS> to, while hypothetically valid, isn't something informed
 MS> ext3-with-extents users will _ever_ elect to do.

one who needs/wants to go back may get rid of extents by:
a) remounting w/o extents option
b) copying new-fashion-style files so that copies use blockmap
c) dropping extents feature in superblock

thanks, Alex