From owner-freebsd-fs@FreeBSD.ORG  Mon Sep  3 19:30:16 2012
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 0C144106567E
	for <freebsd-fs@hub.freebsd.org>; Mon,  3 Sep 2012 19:30:16 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id EA6898FC15
	for <freebsd-fs@hub.freebsd.org>; Mon,  3 Sep 2012 19:30:15 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q83JUF3P056933
	for <freebsd-fs@freefall.freebsd.org>; Mon, 3 Sep 2012 19:30:15 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q83JUFCo056924;
	Mon, 3 Sep 2012 19:30:15 GMT (envelope-from gnats)
Date: Mon, 3 Sep 2012 19:30:15 GMT
Message-Id: <201209031930.q83JUFCo056924@freefall.freebsd.org>
To: freebsd-fs@FreeBSD.org
From: Paavo Pokkinen <paavopok@ee.oulu.fi>
Cc: 
Subject: Re: kern/161968: [zfs] [hang] renaming snapshot with -r including
 a zvol snapshot causes total ZFS freeze/lockup
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Paavo Pokkinen <paavopok@ee.oulu.fi>
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, 03 Sep 2012 19:30:16 -0000

The following reply was made to PR kern/161968; it has been noted by GNATS.

From: Paavo Pokkinen <paavopok@ee.oulu.fi>
To: bug-followup@FreeBSD.org, peter.maloney@brockmann-consult.de
Cc:  
Subject: Re: kern/161968: [zfs] [hang] renaming snapshot with -r including
 a zvol snapshot causes total ZFS freeze/lockup
Date: Mon, 03 Sep 2012 22:16:46 +0300

 I can confirm this exists on 9.1-RC1. Simply issuing "zfs snapshot -r 
 pakka@test" and after that "zfs rename -r pakka@test pakka@test2" hangs. 
 The filesystem appears to continue work, but all zfs commands start 
 hanging. Only reboot eventually helps.
 
 CTRL-T gives me:
 load: 0.00  cmd: zfs 1629 [tx->tx_sync_done_cv)] 412.62r 0.00u 0.00s 0% 
 2640k
 
 The hardware is pentium G630T with 8G ram on asus P8H77-I, four disks 
 are WD RED 3TB. The zpool is raidz1, and I'm using it on plain disks 
 without partitioning. I also have swap on zvol, apparently it also gets 
 snapshotted.
 
 --
 Paavo Pokkinen