From owner-freebsd-stable@FreeBSD.ORG  Wed Mar 10 09:24:53 2010
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 127DD106566B;
	Wed, 10 Mar 2010 09:24:53 +0000 (UTC)
	(envelope-from borjam@sarenet.es)
Received: from proxypop2.sarenet.es (proxypop2.sarenet.es [194.30.0.95])
	by mx1.freebsd.org (Postfix) with ESMTP id C3CB98FC0A;
	Wed, 10 Mar 2010 09:24:52 +0000 (UTC)
Received: from [172.16.1.204] (unknown [192.148.167.2])
	by proxypop2.sarenet.es (Postfix) with ESMTP id 5EC0A733A3;
	Wed, 10 Mar 2010 10:24:51 +0100 (CET)
Mime-Version: 1.0 (Apple Message framework v1077)
Content-Type: text/plain; charset=us-ascii
From: Borja Marcos <borjam@sarenet.es>
In-Reply-To: <CB854F58-03AF-46DD-8153-85FA96037C21@sarenet.es>
Date: Wed, 10 Mar 2010 10:24:49 +0100
Content-Transfer-Encoding: quoted-printable
Message-Id: <BFF1E2D6-B48A-4A5E-ACEE-8577FDB07820@sarenet.es>
References: <864468D4-DCE9-493B-9280-00E5FAB2A05C@lassitu.de>
	<20100309122954.GE3155@garage.freebsd.pl>
	<EC9BC6B4-8D0E-4FE3-852F-0E3A24569D33@sarenet.es>
	<20100309125815.GF3155@garage.freebsd.pl>
	<CB854F58-03AF-46DD-8153-85FA96037C21@sarenet.es>
To: Borja Marcos <borjam@sarenet.es>
X-Mailer: Apple Mail (2.1077)
Cc: FreeBSD Stable <freebsd-stable@freebsd.org>,
	Pawel Jakub Dawidek <pjd@FreeBSD.org>, Stefan Bethke <stb@lassitu.de>
Subject: Re: Many processes stuck in zfs
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: Wed, 10 Mar 2010 09:24:53 -0000


On Mar 9, 2010, at 3:18 PM, Borja Marcos wrote:

>=20
> On Mar 9, 2010, at 1:58 PM, Pawel Jakub Dawidek wrote:
>=20
>>>> What kind of hardware do you have there? There is 3-way deadlock =
I've a
>>>> fix for which would be hard to trigger on single or dual core =
machines.
>>>>=20
>>>> Feel free to try the fix:
>>>>=20
>>>> 	http://people.freebsd.org/~pjd/patches/zfs_3way_deadlock.patch
>>>=20
>>> Maybe related to the deadlock I reported when I was receiving an =
incremental snapshot while the target dataset was being read?
>>=20
>> Could be. This deadlock is in general related to zfs recv =
functionality.
>=20
> Aye aye, Sir
>=20
> set fingers -position crossed
>=20
> testing :)

Tested. Same deadlock remains.







Borja.