From owner-freebsd-fs@FreeBSD.ORG  Mon Feb  7 21:48:07 2011
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5F7841065672;
	Mon,  7 Feb 2011 21:48:07 +0000 (UTC)
	(envelope-from rincebrain@gmail.com)
Received: from mail-qy0-f175.google.com (mail-qy0-f175.google.com
	[209.85.216.175])
	by mx1.freebsd.org (Postfix) with ESMTP id EB2E48FC08;
	Mon,  7 Feb 2011 21:48:06 +0000 (UTC)
Received: by qyk8 with SMTP id 8so1564604qyk.13
	for <multiple recipients>; Mon, 07 Feb 2011 13:48:06 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:mime-version:in-reply-to:references:date
	:message-id:subject:from:to:cc:content-type;
	bh=eSKbqa+tD/sKThsxhftSt6T3jo99AoK4PYJ/uu7z7VI=;
	b=eG6BzQow6SpIe4KbybrwCFSzmMcTndk0I4hMcDNq3UFJw+Q9j+ADk7i6DtNeFWQrP0
	/gsP16etVEGXBO433maf/DlrD4Upsy/+N4hjzBzXvPDhY/6yXZYCH4w1LSolk4vlQHtQ
	OfBGmrGCtqB03F3CxDh6lLKrvDgttDdfdQPPI=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=mime-version:in-reply-to:references:date:message-id:subject:from:to
	:cc:content-type;
	b=XD5Xtue7xkzeFdjHwnc72eXJ3tQuh6coa247aXJl/15jkjATj5twVGmjVFr70ou5V9
	Hd9ZVmUFCbVYoD3PVT7GeU+G41DlI33sS9mipxIZwICdWq21v0tTV4nUPHA/JffJ1BVe
	NPc1EZjPbbgbjsqdtRtkkIswVFMF/SN6VPeyE=
MIME-Version: 1.0
Received: by 10.224.89.85 with SMTP id d21mr14919335qam.162.1297115285656;
	Mon, 07 Feb 2011 13:48:05 -0800 (PST)
Received: by 10.220.85.66 with HTTP; Mon, 7 Feb 2011 13:48:05 -0800 (PST)
In-Reply-To: <AANLkTikMNaNH2CHEB2HJzaGDUgMO=cs71WUmFVR0_-Qk@mail.gmail.com>
References: <4D0A09AF.3040005@FreeBSD.org> <4D46D0CF.8090103@chreo.net>
	<AANLkTikMNaNH2CHEB2HJzaGDUgMO=cs71WUmFVR0_-Qk@mail.gmail.com>
Date: Mon, 7 Feb 2011 16:48:05 -0500
Message-ID: <AANLkTiksOEmdFfBa9Lfi=5Z9zOrb+d_UwoDQKyM5gJnf@mail.gmail.com>
From: Rich <rincebrain@gmail.com>
To: Chreo <chreo@chreo.net>
Content-Type: text/plain; charset=ISO-8859-1
X-Content-Filtered-By: Mailman/MimeDel 2.1.5
Cc: freebsd-fs@freebsd.org
Subject: Re: New ZFSv28 patchset for 8-STABLE
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, 07 Feb 2011 21:48:07 -0000

My apologies, the actual command is count=1 seek=2000000, but that doesn't
end up changing the observed behavior even if I had a 2T disk that I was
using for the flat file.

- Rich

On Mon, Feb 7, 2011 at 4:41 PM, Rich <rincebrain@gmail.com> wrote:

> Hi world,
> I've tested with ZFSv28 on RELENG_8 using the patch
> http://people.freebsd.org/~mm/patches/zfs/v28/releng-8.2-zfsv28-20110204.patch.xz
> .
>
> I can reproducibly panic it using the following sequence of three steps:
> # dd if=/dev/zero of=sparse_file bs=1M count=2000000
> # zpool create testv28 raidz1 ad20 ad26 `pwd`/sparse_file
> # zpool offline testv28 `pwd`/sparse_file
>
> At step 3, I panic every time. I am attempting to get a crash dump, but for
> whatever reason, the dump appears to be hanging instead of making any
> progress.
>
> - Rich
>