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Date: Mon, 8 Jan 2007 09:37:31 +0100
From: "Ulrich Spoerlein" <uspoerlein@gmail.com>
To: freebsd-hackers@freebsd.org, dgilbert@dclg.ca, perryh@pluto.rain.com
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Cc: 
Subject: Re: dump reads more than restore writes?
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On 1/8/07, Oliver Fromme <olli@lurza.secnetix.de> wrote:
> However, I think that there must be a bug in gstat when it
> displays 600 GB read to copy a 200 GB file system.  dump(8)
> is inefficient, but not _that_ inefficient.

When doing the dump|restore dance to copy filesystems, I make it a
habit to have iostat(1) running. It is _always_ displaying a read rate
twice as high as the write rate. And since the iostat/gstat numbers
usually match up, eg., dd(1) numbers, I heavily doubt that it's a
reporting/statistics glitch.

It has to be dump(8).

Uli