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Subject: Re: zfs: the exponential file system from hell
Date: Thu, 03 Oct 2013 09:57:21 -0500
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I have to do some accounting on our backup servers to know what to bill
customers for their space usage. I do this which is reasonably accurate
for our needs

chomp($kb = `zfs get -o value -Hp used $subdir` - `zfs get -r -o value
-Hp usedbysnapshots $subdir | grep -v "-" | paste -sd+ - | bc`);