From owner-freebsd-virtualization@FreeBSD.ORG Sun Jan 9 17:25:08 2011 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B70F21065693 for ; Sun, 9 Jan 2011 17:25:08 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [IPv6:2001:4068:10::3]) by mx1.freebsd.org (Postfix) with ESMTP id 4585A8FC1D for ; Sun, 9 Jan 2011 17:25:08 +0000 (UTC) Received: from localhost (amavis.fra.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 42AB041C7A5; Sun, 9 Jan 2011 18:25:07 +0100 (CET) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([192.168.74.103]) by localhost (amavis.fra.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id hO-zbFThTis0; Sun, 9 Jan 2011 18:25:06 +0100 (CET) Received: by mail.cksoft.de (Postfix, from userid 66) id E50A141C7A4; Sun, 9 Jan 2011 18:25:05 +0100 (CET) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 7CCB44448F3; Sun, 9 Jan 2011 17:20:26 +0000 (UTC) Date: Sun, 9 Jan 2011 17:20:26 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Brandon Gooch In-Reply-To: Message-ID: <20110109171351.I14966@maildrop.int.zabbadoz.net> References: X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="0-1515049787-1294593626=:14966" Cc: FreeBSD virtualization mailing list Subject: Re: way for determine VIMAGE feature X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Jan 2011 17:25:08 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --0-1515049787-1294593626=:14966 Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE On Sun, 9 Jan 2011, Brandon Gooch wrote: > On Sun, Jan 9, 2011 at 9:17 AM, Subbsd wrote: >> Hi >> >> is there any mechanism to find out from userland =A0is supports the >> current kernel VIMAGE or not? something like 'sysctl >> kern.features.vnet=3D1' ? >> Thanks > > I've not been able to determine this either, but as it requires kernel > re-configuration, I usually just know. In my scripts, I make sure and > fail if the call to create a vnet jail fails: > > sh -c 'TEST=3D$(sudo jail -c vnet name=3Dtest host.hostname=3Dtest path= =3D/) ; > if [ $? =3D "1" ]; then echo "VIMAGE NOT AVAILABLE" ; exit 1 ; fi' I would just go with jail -c vnet command=3D/usr/bin/true or something along these liens for the pure test. Otherwise you might end up with a running jail, that you may not want unless you test it with the complete command line. > ...or something like that. > > There may be a better way, or perhaps there should be. Or there will be if there isn't yet. I remember I added a FEATURE() macro somehere. At least my dev machine already has it... # sysctl -a kern.features kern.features.compat_freebsd7: 1 kern.features.compat_freebsd6: 1 kern.features.compat_freebsd5: 1 kern.features.compat_freebsd4: 1 kern.features.vimage: 1=09=09=09<<< kern.features.posix_shm: 1 kern.features.ipsec_natt: 1 kern.features.ipsec: 1 /bz --=20 Bjoern A. Zeeb You have to have visions! Going to jail sucks -- All my daemons like it! http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/jails.html --0-1515049787-1294593626=:14966--