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Date: Fri, 21 Oct 2011 11:54:28 -0400
From: Christoph Hellwig <hch@...radead.org>
To: Eric Sandeen <sandeen@...hat.com>
Cc: Aditya Kali <adityakali@...gle.com>,
Andreas Dilger <adilger@...ger.ca>,
Lukas Czerner <lczerner@...hat.com>,
"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
Nauman Rafique <nauman@...gle.com>,
TheodoreTso <tytso@...gle.com>,
Ric Wheeler <rwheeler@...hat.com>,
"Alasdair G.Kergon" <agk@...hat.com>,
Christoph Hellwig <hch@...radead.org>
Subject: Re: [RFC] Metadata Replication for Ext4
On Fri, Oct 21, 2011 at 10:52:11AM -0500, Eric Sandeen wrote:
> With an SSD, you -really- don't know the independent failure domains,
> with all the garbage collection & remapping that they may do, right?
In fact some popular consumer SSDs do some fairly efficient data
de-duplication which completly runs any metadata redundancy on a single
of these devices void.
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