From owner-freebsd-fs@FreeBSD.ORG  Mon Oct  1 13:58:03 2012
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 25CED106564A
	for <freebsd-fs@freebsd.org>; Mon,  1 Oct 2012 13:58:03 +0000 (UTC)
	(envelope-from freebsd-fs@m.gmane.org)
Received: from plane.gmane.org (plane.gmane.org [80.91.229.3])
	by mx1.freebsd.org (Postfix) with ESMTP id D5D018FC14
	for <freebsd-fs@freebsd.org>; Mon,  1 Oct 2012 13:58:02 +0000 (UTC)
Received: from list by plane.gmane.org with local (Exim 4.69)
	(envelope-from <freebsd-fs@m.gmane.org>) id 1TIgVR-0008AB-KK
	for freebsd-fs@freebsd.org; Mon, 01 Oct 2012 15:57:57 +0200
Received: from dyn1212-46.wlan.ic.ac.uk ([129.31.212.46])
	by main.gmane.org with esmtp (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <freebsd-fs@freebsd.org>; Mon, 01 Oct 2012 15:57:57 +0200
Received: from johannes by dyn1212-46.wlan.ic.ac.uk with local (Gmexim 0.1
	(Debian)) id 1AlnuQ-0007hv-00
	for <freebsd-fs@freebsd.org>; Mon, 01 Oct 2012 15:57:57 +0200
X-Injected-Via-Gmane: http://gmane.org/
To: freebsd-fs@freebsd.org
From: Johannes Totz <johannes@jo-t.de>
Date: Mon, 01 Oct 2012 14:57:28 +0100
Lines: 32
Message-ID: <k4c7g7$ajn$1@ger.gmane.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Complaints-To: usenet@ger.gmane.org
X-Gmane-NNTP-Posting-Host: dyn1212-46.wlan.ic.ac.uk
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
	rv:15.0) Gecko/20120907 Thunderbird/15.0.1
Subject: zfs estimated size off
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 01 Oct 2012 13:58:03 -0000

Hi,

The estimated size by zfs send is always far off (for me). For example:

#zfs list -t all -r panzer/home/jo/hgrepos

NAME                                     USED  REFER
panzer/home/jo/hgrepos                  31.2G  29.4G
[...]
panzer/home/jo/hgrepos@fredsync-120914   202M  29.3G
panzer/home/jo/hgrepos@fredsync-121001      0  29.4G


#zfs send -Rv -I @fredsync-120914 panzer/home/jo/hgrepos@fredsync-121001

send from @fredsync-120914 to panzer/home/jo/hgrepos@fredsync-121001
estimated size is 494M
total estimated size is 494M
TIME        SENT   SNAPSHOT
14:31:36   2.68M   panzer/home/jo/hgrepos@fredsync-121001
[...]
14:36:56    791M   panzer/home/jo/hgrepos@fredsync-121001


This is on: 9-stable, r239951.

I don't use that estimate so it's not a problem for me. Just thought
this is weird.



Johannes