From owner-freebsd-stable@FreeBSD.ORG  Wed Oct  8 06:43:54 2008
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 0BC61106568D
	for <freebsd-stable@freebsd.org>; Wed,  8 Oct 2008 06:43:54 +0000 (UTC)
	(envelope-from smithi@nimnet.asn.au)
Received: from sola.nimnet.asn.au (paqi.nimnet.asn.au [220.233.188.227])
	by mx1.freebsd.org (Postfix) with ESMTP id 7C6808FC20
	for <freebsd-stable@freebsd.org>; Wed,  8 Oct 2008 06:43:53 +0000 (UTC)
	(envelope-from smithi@nimnet.asn.au)
Received: from localhost (localhost [127.0.0.1])
	by sola.nimnet.asn.au (8.14.2/8.14.2) with ESMTP id m986hoQb099743;
	Wed, 8 Oct 2008 17:43:51 +1100 (EST)
	(envelope-from smithi@nimnet.asn.au)
Date: Wed, 8 Oct 2008 17:43:50 +1100 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: lhmwzy <lhmwzy@gmail.com>
In-Reply-To: <78fb9d960810072118k47a64097yaa486ef5179efb1@mail.gmail.com>
Message-ID: <20081008165835.C16723@sola.nimnet.asn.au>
References: <E1KnA2b-0007ls-8u@dilbert.ticketswitch.com>
	<200810071314.45922.max@love2party.net> <48EB5ADD.2090900@modulus.org>
	<78fb9d960810072118k47a64097yaa486ef5179efb1@mail.gmail.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Cc: freebsd-stable@freebsd.org, Andrew Snow <andrew@modulus.org>
Subject: Re: zfs quota question
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 08 Oct 2008 06:43:54 -0000

On Wed, 8 Oct 2008, lhmwzy wrote:
 > The fllow is better?
 > #!/bin/sh
 > find $1 -type f -exec ls -lh {} \; | awk '{j += $5} END {print j"M"}'

Review your 'ls -lh' output; what's 100Bananas + 10Kiwifruit + 1Melon?

$ find . -type f -exec ls -lh {} \; | awk '{j += $5} END {print j"M"}'
1.15975e+06M

Took several minutes to come up with the wrong answer :)

$ /root/bin/dirsize .
6906276646

Took 2.75 seconds, giving actual total of the file sizes.

$ du -d0 .
6781976 .

Took 1.5 seconds, and comes to 69447434424, ie bytes allocated for those 
files.  All on a 300MHz Celeron.

 > 2008/10/7 Andrew Snow <andrew@modulus.org>:
 > >> I love ZFS, but I suddenly found out last night that I
 > >> have lost the ability tto do a 'du' on a directory to work out if it will
 > >> fit onto a CD or not :-)
 > >
 > > I have created a shell script, /usr/local/bin/dirsize :
 > >
 > > #!/bin/sh
 > > find $1 -type f -ls | awk '{j += $7} END {print j}'
 > >
 > > Usage: dirsize <path>

And very handy it is too, even without compressed ZFS, thanks Andrew.

cheers, Ian