linux-ext4 - debugfs feature request: dump sparse files as sparse.

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Message-ID: <20121114040757.16656.qmail@science.horizon.com>
Date:	13 Nov 2012 23:07:57 -0500
From:	"George Spelvin" <linux@...izon.com>
To:	linux-ext4@...r.kernel.org
Cc:	linux@...izon.com
Subject: debugfs feature request: dump sparse files as sparse.

When dumping a file with some messed-up block pointers, I discovered
that I had a huge, and fully allocated destination file.  (ls -s on the
dump displayed some very large number, even though the original file
only had about 8 blocks allocated.)

It wouldprobably make more sense to seek over the gaps to create a
sparse file.
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