From owner-freebsd-stable@FreeBSD.ORG  Tue Jul  7 22:53:01 2009
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 68BEF1065670
	for <freebsd-stable@freebsd.org>; Tue,  7 Jul 2009 22:53:01 +0000 (UTC)
	(envelope-from andrew@modulus.org)
Received: from email.octopus.com.au (email.octopus.com.au [122.100.2.232])
	by mx1.freebsd.org (Postfix) with ESMTP id 29BB18FC14
	for <freebsd-stable@freebsd.org>; Tue,  7 Jul 2009 22:53:00 +0000 (UTC)
	(envelope-from andrew@modulus.org)
Received: by email.octopus.com.au (Postfix, from userid 1002)
	id BF12A17D4D; Wed,  8 Jul 2009 08:34:47 +1000 (EST)
X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on email.octopus.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.4 required=10.0 tests=ALL_TRUSTED autolearn=failed
	version=3.2.3
Received: from [10.1.50.60] (ppp121-44-41-14.lns10.syd7.internode.on.net
	[121.44.41.14])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	(Authenticated sender: admin@email.octopus.com.au)
	by email.octopus.com.au (Postfix) with ESMTP id BACCC17CFD;
	Wed,  8 Jul 2009 08:34:43 +1000 (EST)
Message-ID: <4A53CCEC.7010808@modulus.org>
Date: Wed, 08 Jul 2009 08:32:12 +1000
From: Andrew Snow <andrew@modulus.org>
User-Agent: Thunderbird 2.0.0.14 (X11/20080523)
MIME-Version: 1.0
To: "Mahlon E. Smith" <mahlon@martini.nu>, freebsd-stable@freebsd.org
References: <20090707195614.GA24326@martini.nu>	<b269bc570907071354r36015689ha362ba83413efc46@mail.gmail.com>
	<20090707222631.GA70750@martini.nu>
In-Reply-To: <20090707222631.GA70750@martini.nu>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: 
Subject: Re: ZFS: drive replacement performance
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: Tue, 07 Jul 2009 22:53:01 -0000

Mahlon E. Smith wrote:

> Strangely, the ETA is jumping all over the place, from 50 hours to 2000+
> hours.  Never seen the percent complete over 0.01% done, but then it
> goes back to 0.00%.

Are you taking snapshots from crontab?  Older versions of the ZFS code 
re-started scrubbing whenever a snapshot was taken.