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Date: Thu, 27 Oct 2016 13:30:11 +0200
From: Saint Germain <saintger@gmail.com>
To: linux-btrfs@vger.kernel.org
Subject: Identifying reflink / CoW files
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Hello,

Following the previous discussion:
https://www.spinics.net/lists/linux-btrfs/msg19075.html

I would be interested in finding a way to reliably identify reflink /
CoW files in order to use deduplication programs (like fdupes, jdupes,
rmlint) efficiently.

Using FIEMAP doesn't seem to be reliable according to this discussion
on rmlint:
https://github.com/sahib/rmlint/issues/132#issuecomment-157665154

Is there another way that deduplication programs can easily use ?

Thanks