From owner-freebsd-current@FreeBSD.ORG  Thu Mar 12 02:29:44 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 8BC3F1065675
	for <freebsd-current@freebsd.org>; Thu, 12 Mar 2009 02:29:44 +0000 (UTC)
	(envelope-from lists@jnielsen.net)
Received: from ns1.jnielsen.net (ns1.jnielsen.net [69.55.238.237])
	by mx1.freebsd.org (Postfix) with ESMTP id 69EA88FC08
	for <freebsd-current@freebsd.org>; Thu, 12 Mar 2009 02:29:44 +0000 (UTC)
	(envelope-from lists@jnielsen.net)
Received: from [192.168.213.128] (jn@stealth.jnielsen.net [74.218.226.254])
	(authenticated bits=0)
	by ns1.jnielsen.net (8.12.9p2/8.12.9) with ESMTP id n2C2TgVF019760;
	Wed, 11 Mar 2009 22:29:43 -0400 (EDT)
	(envelope-from lists@jnielsen.net)
From: John Nielsen <lists@jnielsen.net>
To: Tim Kientzle <kientzle@freebsd.org>
Date: Wed, 11 Mar 2009 22:29:40 -0400
User-Agent: KMail/1.9.10
References: <200903100104.53847.ken__6247.10998167775$1236647281$gmane$org@mthelicon.com>
	<200903102310.32735.lists@jnielsen.net>
	<49B73F99.9010200@freebsd.org>
In-Reply-To: <49B73F99.9010200@freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200903112229.41052.lists@jnielsen.net>
X-Virus-Scanned: ClamAV version 0.88.4,
	clamav-milter version 0.88.4 on ns1.jnielsen.net
X-Virus-Status: Clean
Cc: freebsd-current@freebsd.org
Subject: Re: ZFS/extattr lockup (was Re: bsdtar lockup on Current-03/10/2009)
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 12 Mar 2009 02:29:45 -0000

On Wednesday 11 March 2009 12:35:37 am Tim Kientzle wrote:
> John Nielsen wrote:
> > I today noticed the same problem on -CURRENT i386 built March 9.
> > ...  using ZFS and initially
> > thought that was the source of the regression but I haven't produced
> > the lockup with anything but tar and the extattr removal hack seems
> > to have fixed it for now ...
>
> The common element so far seems to be ZFS.  Can you verify that
>
>    $ lsextattr -h user <filename>
>
> hangs on your system as well?  That invokes the same
> extattr_list_link system call used by tar to enumerate
> the extended attributes on a file.

Confirmed. I ran the command on a file in /root (UFS) with no problem. 
Running again on a file in /home/john (ZFS) caused the hang.

JN