linux-ext4 - Re: LVM vs. Ext4 snapshots (was: [PATCH v1 00/30] Ext4 snapshots)

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Message-ID: <843433D5F73C864182AC91B8@nimrod.local>
Date:	Sat, 11 Jun 2011 09:18:46 +0100
From:	Alex Bligh <alex@...x.org.uk>
To:	Joe Thornber <thornber@...hat.com>,
	"Amir G." <amir73il@...rs.sourceforge.net>
cc:	Lukas Czerner <lczerner@...hat.com>,
	Mike Snitzer <snitzer@...hat.com>, linux-ext4@...r.kernel.org,
	tytso@....edu, linux-kernel@...r.kernel.org, lvm-devel@...hat.com,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Alex Bligh <alex@...x.org.uk>
Subject: Re: LVM vs. Ext4 snapshots (was: [PATCH v1 00/30] Ext4 snapshots)



--On 11 June 2011 08:49:08 +0100 Joe Thornber <thornber@...hat.com> wrote:

> I am also convinced multisnap wont be suitable for every use case.

I'm surprised by one thing ext 4 snapshots doesn't seem to do: I would have
thought the "killer feature" for doing snapshots in the fs rather than in
the block layer would be the ability to snapshot - and more importantly
roll back - only parts of the directory hierarchy.

(I've only read the URLs Amir sent, so apologies if I've missed this)

-- 
Alex Bligh
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