NetInstalling OpenBSD on sparc/sparc64
I have had a few friends (who ended up wimping out and installing either via scsi cdrom, or by writing the miniroot.fs to the swap partition) ask how to do a netboot install of OpenBSD on sparc or sparc64 architecture.
First things first
enable the services you will need on your server (OpenBSD will be used for this example). This is actaully quite simple.. make sure the
/etc/ethersfile exists (we’ll customize it later), as well as the
/etc/ethersfile, add the mac address, and the hostname of the machine you want to install (you can get this from the openfirmware boot sequence). My file looks like this:
8:0:20:79:1c:1d ss5 8:0:20:c2:a8:7e netra2
add an entry to
/etc/hostsfor the machine in question.
/etc/bootparamsfile, this file contains the NFS path that will be mounted as the root filesystem. Mine looks like this:
ss5 root=salamander:/usr/home/ss5/root swap=salamander:/usr/home/ss5/swap netra2 root=salamander:/usr/home/netra/root swap=salamander:/usr/home/netra/swap
enable the tftp daemon in
/tftpboot, you will make a symlink to the file that will be requested in a minute.
prepare the nfs directories:
mkdir -p /home/ss5/root dd if=/dev/zero of=/home/ss5/swap bs=1k count=16000 cd /home/ss5/root tar xzpf /path/to/base36.tgz cp /path/to/bsd.rd . ln -s bsd.rd bsd
nfs export your directory structure you made
either manually start
rpc.bootparamd, or just reboot your openbsd server and it will bring up the required services.
now the tricky part, when you “boot net” your sun box, it will request a weirdly named file from the tftp server, and openbsd’s tftp server doesn’t have verbose logging like debians for example, but there is a really easy way to get around that. run tcpdump
# tcpdump -i hme0 port tftp tcpdump: listening on hme0 05:22:33.667329 netra2.18619 > puffy.perl.cx.tftp: 17 RRQ "0A00013D"
The filename in quotes after RRQ is what you will want to symlink
/tftpboot, so create that symlink, and then you should be able to successfully “boot net” the box and do the install.
I had several sources to write this up:
- http://legonet.org/~griffin/openbsd/netbooting_ss5.html (now moved to http://johan.fredin.info/openbsd/netbooting_ss5.html)