From owner-freebsd-stable@FreeBSD.ORG  Tue Jun 28 08:37:35 2005
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: stable@freebsd.org
Delivered-To: freebsd-stable@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 65C3016A41C
	for <stable@freebsd.org>; Tue, 28 Jun 2005 08:37:35 +0000 (GMT)
	(envelope-from eirik@unicore.no)
Received: from anduin.net (anduin.net [212.12.46.226])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 2885943D55
	for <stable@freebsd.org>; Tue, 28 Jun 2005 08:37:34 +0000 (GMT)
	(envelope-from eirik@unicore.no)
Received: from [213.225.74.100] (helo=[192.168.200.110])
	by anduin.net with esmtpa (Exim 4.50 (FreeBSD)) id 1DnBb3-000K3v-CR
	for stable@freebsd.org; Tue, 28 Jun 2005 10:37:33 +0200
Mime-Version: 1.0 (Apple Message framework v730)
Content-Transfer-Encoding: 7bit
Message-Id: <92135CB3-5540-4D06-A991-708C8AAD6AC7@unicore.no>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
To: stable@freebsd.org
From: =?ISO-8859-1?Q?Eirik_=D8verby?= <eirik@unicore.no>
Date: Tue, 28 Jun 2005 10:37:29 +0200
X-Mailer: Apple Mail (2.730)
Cc: 
Subject: Jails that won't die...
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, 28 Jun 2005 08:37:35 -0000

Hi,

I have, since upgrading to 5.x and updating my management tools, seen  
a number of problems relating to stopping jails.

I'm maintaining several hosts with a number of full-featured jails  
(i.e. full virtual FreeBSD installations in each jail), and in  
general this works fine. However, whenever I stop a jail using 'jexec  
<id> kill -SIGNAL -1' or 'jexec <id> /bin/sh /etc/rc.shutdown' (in  
various combinations), jails have a tendency to stick around for  
minutes or hours - according to 'jls'. Often I see an entry in  
'netstat -a' indicating that there is one or more sockets in FIN_WAIT  
state, preventing the jail from coming down. Taking the virtual  
network interface (alias) down does not help. All I can do at this  
point is wait.

I normally use 'jls' to determine whether or not a jail can be  
restarted (i.e. it's not running), but this is pretty useless in such  
cases. And right now I have a case where 'netstat -a' shows me  
nothing pertaining to the jail, though it has no processes running. I  
have therefore force-started the jail again, which seems to work  
nicely, but now 'jls' gives me two entries for this jail, with  
different JIDs.

What am I doing wrong here?

/Eirik