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Openbsd qemu cf net4801

Installing OpenBSD on CF under kvm (qemu) on Debian for later net4801 deployment

Pre requisites

 Fast 1GB CF Card
 Debian (or other GNU/Linux distribution)
 CF-card reader

Preparations for installation

debian$ wget http://ftp.sunet.se/pub/OpenBSD/5.1/i386/cd51.iso

Plug-in the CF card in the cf card reader. If your system auto mounts the file system on the CF card, umount it.

Change the permission of /dev/sdb (or the device name your cf got when you plugged it in) you can access it as non root user. e.g.

debian$ sudo chmod 777 /dev/sdb

Start kvm:

debian$ kvm -hda /dev/sdb -cdrom cd51.iso -boot d

Perform a normal OpenBSD install with the following partition table

wd0a 300m       /
(wd0b 0         swap)
wd0d 120m       /var
wd0e 80m        /home
wd0f 500(rest)  /usr

Note: skipping /tmp for later

IP-network settings: use dhcp for now (Note: change this later when you do system configuration after reboot)

Installation options

 http installation
 Server: ftp.sunet.se

I used the following sets

        [X] bsd
        [X] bsd.rd
        [ ] bsd.mp
        [X] base51.tgz
        [X] etc51.tgz
        [ ] comp51.tgz
        [X] man51.tgz
        [ ] game51.tgz
        [ ] xbase51.tgz
        [ ] xetc51.tgz
        [ ] xshare51.tgz
        [ ] xfont51.tgz
        [ ] xserv51.tgz

After installation (do not reboot before this)

Edit /mnt/etc/fstab and change /tmp and /var/run to mfs

openbsd# echo "swap /tmp mfs rw,nodev,nosuid,-s=19456 0 0" >> /mnt/etc/fstab
openbsd# echo "swap /var/run mfs rw,nodev,nosuid,-s=19456 0 0" >> /mnt/etc/fstab

apply the following change to /mnt/etc/rc

 umount -a >/dev/null 2>&1
 mount -a -t nonfs,vnd
 +chmod 1777 /tmp
 mount -uw /            # root on nfs requires this, others aren't hurt
 rm -f /fastboot                # XXX (root now writeable)

If you use ed

openbsd# ed /mnt/etc/rc
/mount -a -t nonfs/
a
chmod 1777 /tmp
ctrl-d
w
q

A word of warning, starting with OpenBSD 5.6 /etc/rc is no longer a config file so this need to be redone after unpacking baseNN.tgz

Example of what should be done when you later upgrade

# cp /bin/ed /bin/oed
# tar -C / -xzphf base56.tgz
# /bin/oed /etc/rc
/mount -a -t nonfs/
a
chmod 1777 /tmp
ctrl-d
w
q

Fix the domain name (will be my.domain by default)

openbsd# echo "<hostname>.<domain>" > /mnt/etc/myname  # (e.g. calvin.example.com)

Now it's time to halt and restart the system

openbsd# halt

Exit qemu (close the window) and restart qemu

debian$ kvm -hda /dev/sdb

System configuration after reboot

When the system is up after the first reboot we can use vi instead of ed to perform some more configurations.

Enable soft updates and disable atime by editing /etc/fstab (we will reboot later)

<DUID> / ffs rw,softdep,noatime 1 1
<DUID> /home ffs rw,nodev,nosuid,softdep,noatime 1 2
<DUID> /usr ffs rw,nodev,softdep,noatime 1 2
<DUID> /var ffs rw,nodev,nosuid,softdep,noatime 1 2
swap /tmp mfs rw,nodev,nosuid,-s=19456 0 0
swap /var/run mfs rw,nodev,nosuid,-s=19456 0 0

Fix /etc/hosts (my.domain will be there as well).

Install BASH, WGET, LSOF & NGREP

openbsd# pkg_add -v http://ftp.sunet.se/pub/OpenBSD/5.1/packages/i386/bash-4.2.20.tgz
openbsd# pkg_add -v http://ftp.sunet.se/pub/OpenBSD/5.1/packages/i386/wget-1.13.4.tgz
openbsd# pkg_add -v http://ftp.sunet.se/pub/OpenBSD/5.1/packages/i386/lsof-4.83p7.tgz
openbsd# pkg_add -v http://ftp.sunet.se/pub/OpenBSD/5.1/packages/i386/ngrep-1.45p4.tgz

Verify that bash is in /etc/shells

openbsd# grep bash /etc/shells
/usr/local/bin/bash

Change shell to bash

openbsd# chsh -s bash
openbsd# chsh -s bash <user>

Continue configuring the system (e.g. disable ident, daytime and time for both IPv4 and IPv6 in /etc/inetd.conf)

Before last qemu shutdown (before moving CF to the net4801 box):

Edit /etc/ttys and fix the tty00 line

tty00   "/usr/libexec/getty std.19200"  vt220    on secure

Add the file /etc/boot.conf

stty com0 19200
set tty com0

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Published

Nov 28, 2006

Last Updated

2014-11-23 09:28:40+01:00

Author

henrik

Category

HOWTOs

Tags

  • KVM 4
  • OpenBSD 6

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