From owner-freebsd-questions@freebsd.org Wed Oct 4 10:10:00 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 70F70E34E39 for ; Wed, 4 Oct 2017 10:10:00 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mailrelay12.qsc.de (mailrelay12.qsc.de [212.99.163.153]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.antispameurope.com", Issuer "TeleSec ServerPass DE-2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DB1BC7EEAC for ; Wed, 4 Oct 2017 10:09:59 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mx01.qsc.de ([213.148.129.14]) by mailrelay12.qsc.de; Wed, 04 Oct 2017 12:09:50 +0200 Received: from r56.edvax.de (port-92-195-63-92.dynamic.qsc.de [92.195.63.92]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx01.qsc.de (Postfix) with ESMTPS id 230713CC3F; Wed, 4 Oct 2017 12:09:49 +0200 (CEST) Received: from r56.edvax.de (localhost [127.0.0.1]) by r56.edvax.de (8.14.5/8.14.5) with SMTP id v94A9nYj003977; Wed, 4 Oct 2017 12:09:49 +0200 (CEST) (envelope-from freebsd@edvax.de) Date: Wed, 4 Oct 2017 12:09:49 +0200 From: Polytropon To: Johan Hendriks Cc: freebsd-questions@freebsd.org Subject: Re: Edit the qcow2 FreeBSD image file Message-Id: <20171004120949.24b4cd25.freebsd@edvax.de> In-Reply-To: References: <20171004112931.bb6524b9.freebsd@edvax.de> Reply-To: Polytropon Organization: EDVAX X-Mailer: Sylpheed 3.1.1 (GTK+ 2.24.5; i386-portbld-freebsd8.2) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-cloud-security-sender: freebsd@edvax.de X-cloud-security-recipient: freebsd-questions@freebsd.org X-cloud-security-Virusscan: CLEAN X-cloud-security-disclaimer: This E-Mail was scanned by E-Mailservice on mailrelay12.qsc.de with 605086AA624 X-cloud-security-connect: mx01.qsc.de[213.148.129.14], TLS=1, IP=213.148.129.14 X-cloud-security: scantime:.1391 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Oct 2017 10:10:00 -0000 On Wed, 4 Oct 2017 12:02:56 +0200, Johan Hendriks wrote: >=20 >=20 > Op 04/10/2017 om 11:29 schreef Polytropon: > > On Wed, 4 Oct 2017 09:47:47 +0200, Johan Hendriks wrote: > >> I want to add a script to the default qcow2 file of the FreeBSD qcow2 = image. > >> But how do i mount the qcow2 file on FreeBSD? > >> There are a lot of howto's how to do it on Linux but i do not always > >> have a Linux box ready. > > Without having verified, I'd say something like this will work: > > > > # mdconfig -a -t vnode -f -u 0 > > # mount -t ufs -o rw /dev/md0s1a /mnt > > > > The key is to connect the file to a md device ("memory disk"), > > and then use it as if it was a real disk. But always check the > > correct device file name - md0 will reflect the "disk layout" > > of the image file, so maybe you need to use /dev/md0p1 or > > /dev/md0a or simply /dev/md0, so check "ls /dev/md0*" to see > > how the layout is being translated to device files - this > > depends on the layout that has been constructed within the > > image file. > > > > When you're done, use: > > > > # umount /mnt > > # mdconfig -d -u 0 > > > > This will finally sync any changes and disconnect the device. > > The image file can be used now. > > > Thanks, I tried that, but it does not work. > root@desk:~ # mdconfig -a -t vnode -f FreeBSD-11.1-RELEASE-amd64.qcow2 -u= 0 >=20 > Then a ls of /dev/md0 only shows md0 and i can not mount that one. > root@desk:~ # ls -al /dev/md* > crw-r-----=A0 1 root=A0 operator=A0 0x8c Oct=A0 4 11:48 /dev/md0 > crw-------=A0 1 root=A0 wheel=A0=A0=A0=A0=A0 0xb Sep 21 14:16 /dev/mdctl >=20 > And a mount of /dev/md0 gives an error. >=20 > root@desk:~ # mount -t ufs -o rw /dev/md0 /mnt > mount: /dev/md0: Invalid argument Check the file format of md0 if it is recognized as a filesystem image: # file FreeBSD-11.1-RELEASE-amd64.qcow2 # file -s /dev/md0 it should be recognized as a UFS file system (typically called "Unix Fast File system [v2]"). Note that you can only mount a file system which is being recognized correctly. --=20 Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...