QEMU/SunOS 4.1.4
Motivation
editThis chapter describes the installation of SunOS 4.1.4 (= Solaris 1.1.2) on an emulated QEMU 1.4.0 SPARC machine. SunOS 4.1.4 is the last purely BSD based Unix operating system by Sun Microsystems. It was superseded by Solaris 2.x (= SunOS 5.x), based on System V Release 4. Programs compiled for SunOS 4.x won't run without binary emulation on Solaris version 2.x. The Unix file utility under Solaris 2.4 will print reports like
Sun demand paged SPARC executable
for SunOS 4.1.4 binaries and
ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped
for Solaris 2.4 binaries. If you want to run ancient computer programs of the first kind you might want to try it natively on SunOS 4.1.4.
Prerequisites
edit- SunOS 4.1.4 installation CD-ROM image
- SPARCstation 5 ROM Rev. 2.15 image
In the following the CD image file is named solaris1.1.2.iso and the ROM image file is named ss5.bin. For our installation we create a disk image of 2 GB in size:
$ qemu-img create -f qcow2 -o compat=1.1 sunos414.img 2G Formatting 'sunos414.img', fmt=qcow2 size=2147483648 compat='1.1' encryption=off cluster_size=65536 lazy_refcounts=off
For compatibility with QEMU versions prior to 1.1 leave out compat=1.1. If you need more space, replace 2G by a higher value, but keep in mind that the installation program won't provide a predefined disk geometry. You'll have to enter the CHS values yourself during the installation.
Copying the Miniroot Image
editWe start the emulated machine with the following command. Here and in the following all commands on the host (the system QEMU runs on) will have the shell prompt "$", the ROM prompt will be "ok", the guest prompt (of the system running on the emulated machine) will be "#" and the QEMU monitor prompt will be "(qemu)".
$ qemu-system-sparc -monitor tcp::4444,server,nowait -bios ss5.bin -m 32 -nographic -hda sunos414.img -hdb solaris1.1.2.iso
We omit the -machine option, which means QEMU will emulate a SPARCstation 5 (based on the sun4m architecture) as default. The emulated machine provides no usable graphics, so we disable graphical output with -nographic, redirecting all output to the terminal from which we started QEMU. Later we will explain how to run X Windows programs on the guest by exporting the display to an X server running on the host. Since there will be no keyboard emulation either, all input will be taken from the terminal as well. You will see the following ROM message:
Keyboard not present. Using tty for input and output.
The -monitor option lets us control QEMU over a telnet connection, in our example over port 4444. For this execute
$ telnet localhost 4444
in another console. Alternatively we could omit the -monitor option and use the "Ctrl-a c" command to switch between console (in which QEMU runs) and the QEMU monitor prompt. In this case type "Ctrl-a h" to get help. Useful commands are
(qemu) stop
to pause the emulated machine and
(qemu) cont
to resume. You will always have full CPU load on the host system while the emulated machine is not paused. This command terminates QEMU immediately:
(qemu) q
Our emulated machine has 32 MB of RAM, indicated by the -m option. That seems to be the minimal amount that won't make QEMU exit with the error:
qemu: fatal: Trap 0x29 while interrupts disabled, Error state
The maximal amount for a SPARCstation 5 ist 256 MB. Choose 32 MB if you don't want to wait for the ROM memory test, which takes some time. We don't make use of the emulated CD-ROM device via the -cdrom option because it doesn't work. Instead, we declare the installation CD to be the second hard drive. The start sequence of the ROM finishes with a failed network boot:
Boot device: /iommu/sbus/ledma@5,8400010/le@5,8c00000 File and args: Internal loopback test -- Wrong packet length; expected 36, observed 64
It seems that QEMU version 1.4.0 is not capable of allowing us to boot over network. We boot with
ok boot disk1:d
from the fourth partition on the second hard drive (our CD image), which carries the boot block for our architecture. Make the following choices:
What would you like to do? 1 - install SunOS mini-root 2 - exit to single user shell Enter a 1 or 2: 1 Beginning system installation - probing for disks. Which disk do you want to be your miniroot system disk? 1 - sd1: <CD-ROM Disc for SunOS Installation> at esp0 slave 8 2 - sd3: <drive type unknown>> at esp0 slave 0 3 - exit to single user shell Enter a 1, 2 or 3: 2 selected disk unit "sd3". Do you want to format and/or label disk "sd3"? 1 - yes, run format 2 - no, continue with loading miniroot 3 - no, exit to single user shell Enter a 1, 2, or 3: 1
Notice that the booted system has its own idea about how to order the attached drives. The device we booted from (the second hard disk) is given the name sd1 and our target disk is named sd3. We chose to format the latter. We select the type "SUN2.1G":
format> type
AVAILABLE DRIVE TYPES:
0. Quantum ProDrive 80S
1. Quantum ProDrive 105S
2. CDC Wren IV 94171-344
3. SUN0104
4. SUN0207
5. SUN0320
6. SUN0327
7. SUN0424
8. SUN0535
9. SUN0669
10. SUN1.0G
11. SUN1.05
12. SUN1.3G
13. SUN2.1G
14. CD-ROM Disc for SunOS Installation
15. other
Specify disk type (enter its number): 13
selecting sd3: <SUN2.1G>
[disk formatted, no defect list found]
The predefined disk formats are stored in /etc/format.dat on the miniroot file system. The path to our miniroot image on the CD-ROM is:
EXPORT/EXEC/KVM/SUN4M_SUNOS_4_1_4/MINIROOT_SUN4M
In format.dat we find for the disk geometry of our disk type:
disk_type = "SUN2.1G" \ : ctlr = SCSI : fmt_time = 4 \ : ncyl = 2733 : acyl = 2 : pcyl = 3500 : nhead = 19 : nsect = 80 \ : rpm = 5400 : bpt = 44823
and for the predefined partitionings:
partition = "SUN2.1G_PREINSTALL" \
: disk = "SUN2.1G" : ctlr = SCSI \
: a = 0, 62320 : b = 41, 197600 : c = 0, 4154160 : g = 171, 1947120 \
: h = 1452, 1947120
partition = "SUN2.1G_STANDARD" \
: disk = "SUN2.1G" : ctlr = SCSI \
: a = 0, 62320 : b = 41, 197600 : c = 0, 4154160 : g = 171, 3894240
Notice that ncyl*nhead*nsect=4154160 is the number of 512 byte blocks in the third partition, which comprises the whole usable space, while the size of the disk is (ncyl+acyl)*nhead*nsect=4157200 blocks, which is approximately 1.98 GB or 2.13e9 Bytes. If you want to install on a disk image without predefined geometry you'll have to enter the figures yourself. To write the partitioning to the disk and print the partition table do:
format> label Ready to label disk, continue? y format> partition
partition> print
Current partition table (SUN2.1G_PREINSTALL):
partition a - starting cyl 0, # blocks 62320 (41/0/0)
partition b - starting cyl 41, # blocks 197600 (130/0/0)
partition c - starting cyl 0, # blocks 4154160 (2733/0/0)
partition d - starting cyl 0, # blocks 0 (0/0/0)
partition e - starting cyl 0, # blocks 0 (0/0/0)
partition f - starting cyl 0, # blocks 0 (0/0/0)
partition g - starting cyl 171, # blocks 1947120 (1281/0/0)
partition h - starting cyl 1452, # blocks 1947120 (1281/0/0)
partition> quit
The size of the swap partition b is 100 MB. In SunOS 4.x the size of the swap partition should be at least the size of the RAM because every program has reserved swap space that amounts to its memory size. Change the swap space to your needs and exit the format utility with:
format> quit checking writeability of /dev/rsd3b 0+1 records in 1+0 records out Extracting miniroot ... using cdrom partition number 3 fastread: failed to open /dev/rsr0No such device or address ERROR while loading miniroot disk: /dev/rsd3b
Extraction of the minroot by the extract script fails because the source CD-ROM device /dev/rsr0 doesn't exist. In the file /extract we find the figures (in bytes) to locate the miniroot image:
miniskip=4194304 minicount=7168000
and the command to copy it:
fastread $cddev $cdpartno $miniskip $minicount > /dev/r${disk}b
With this information we can extract the miniroot to the swap partition of our target disk:
# dd if=/dev/rsd1d bs=4096 skip=1024 count=1750 of=/dev/sd3b 1750+0 records in 1750+0 records out
Reboot the machine with:
# reboot
Installation
editBack on the ROM prompt we boot the miniroot:
ok boot disk0:b -w
The -w flag is necessary to make the mounted file system writable as required by the SunInstall program. The SunInstall program won't let us select a hard disk as installation source. Therefore we link the CD-ROM device /dev/sr0 to the hard disk associated with our CD-ROM image:
# cd /dev # mv sr0 sr0.bak # ln -s sd1a sr0
SunInstall will recreate device names using the script /dev/MAKEDEV. To exclude/dev/sr0 from the recreation we remove its entry in MAKEDEV:
# mv MAKEDEV MAKEDEV.bak # sed 's/sr0 //' MAKEDEV.bak > MAKEDEV # chmod 755 MAKEDEV # cd /
We are now ready to fire up SunInstall:
# suninstall
Welcome to SunInstall
Remember: Always back up your disks before beginning an installation.
SunInstall provides two installation methods:
1. Quick installation
This option provides an automatic installation with a choice of
standard installations, and a minimum number of questions asked.
2. Custom installation
Choose this method if you want more freedom to configure your
system. You must use this option if you are installing your
system as a server.
Your choice (or Q to quit) >> 2
Select your terminal type:
1) Televideo 925
2) Wyse Model 50
3) Sun Workstation
4) Other
>> 4
Enter the terminal type ( the type must be in /etc/termcap ):
>> ansi
Enter the local time zone name (enter ? for help):
>> ?
The terminal type ansi seems to work well enough. If you encounter problems with the display of the SunInstall menus you can redraw the screen with "Ctrl-l". If you know the name of your time zone, you can enter it directly. With "?" we are led through a menu to select our time zone. After confirming the correct time setting we are led to the form assigning the host information:
HOST FORM [?=help] [DEL=erase one char] [RET=end of input data]
-----------------------------------------------------------------------------
Workstation Information :
Name : sunguest
Type : x[standalone] [server] [dataless]
Network Information :
Ethernet Interface : [none] x[le0]
Internet Address : 10.0.2.15
NIS Type : x[none] [master] [slave] [client]
Misc Information :
Reboot after completed : [y] x[n]
Are you finished with this form [y/n] ? y
[x/X=select choice] [space=next choice] [^B/^P=backward] [^F/^N=forward]
In this example we set the host name to "sunguest" and 10.0.2.15 is the standard address assigned to the guest system by QEMU. The next form lets us assign the disk information:
DISK FORM [?=help] [DEL=erase one char] [RET=end of input data]
-----------------------------------------------------------------------------
Attached Disk Devices :
[sd1] x[sd3]
Disk Label : [default] x[use existing] [modify existing]
Free Hog Disk Partition : [d] [e] [f] [g] x[h]
Display Unit : x[Mbytes] [Kbytes] [blocks] [cylinders]
PARTITION START_CYL BLOCKS SIZE MOUNT PT PRESERVE(Y/N)
==============================================================================
a 0 62320 31 / n
b 41 197600 100
c 0 4154160 2126
d 0 0 0
e 0 0 0
f 0 0 0
g 171 1947120 996 /usr n
h 1452 1947120 996 /home n
Ok to use this partition table [y/n] ? y
[x/X=select choice] [space=next choice] [^B/^P=backward] [^F/^N=forward]
Eventually we set the source device and make a choice for a software selection:
SOFTWARE FORM [?=help] [DEL=erase one char] [RET=end of input data]
-----------------------------------------------------------------------------
Software Architecture Operations :
x[add new release] [edit existing release]
Media Information :
Media Device : [st0] [st1] [st2] [st_] [xt0] [mt0] [fd0] x[sr0]
Media Location : x[local] [remote]
Choice : x[all] [default] [required] [own choice]
Executables path : /usr
Kernel executables path : /usr/kvm
Ok to use these values to select Software Categories [y/n] ? y
[x/X=select choice] [space=next choice] [^B/^P=backward] [^F/^N=forward]
We are then informed about the software packages to be installed and arrive at the final screen from which we can start the installation:
MAIN MENU [?=help]
-----------------------------------------------------------------------------
Sun Microsystems System Installation Tool
( + means the data file(s) exist(s) )
+ assign host information
+ assign disk information
+ assign software information
start the installation
exit suninstall
[RET/SPACE=next choice] [x/X=select choice] [^B/^P=backward] [^F/^N=forward]
The existence of data files indicated by "+" means the entered data is not lost, even if we reboot the machine. After SunInstall has finished its job we can reboot with
# reboot
and should be able to boot our fresh system with:
ok boot disk0
At the login prompt we can enter root and get a shell prompt without password. The system can be stopped with
# halt
and the machine can be shut down with:
ok power-off
Network
editGuest Configuration
editIf you want to address the host system by a host name, assign it to the IP address 10.0.2.2 in /etc/hosts (on the guest):
# cat >> /etc/hosts 10.0.2.2 qemuhost ^D
where ^D means Ctrl-d. A host name is necessary to use rlogin, rsh and rcp on the guest. For a connection to the outside we set the default route with
# route add default 10.0.2.2 1 add net default: gateway 10.0.2.2
and make it permanent with:
# cat > /etc/defaultrouter 10.0.2.2 ^D
Check the routes with:
# netstat -r Routing tables Destination Gateway Flags Refcnt Use Interface localhost localhost UH 1 288 lo0 default qemuhost UG 0 0 le0 arpanet sunguest U 2 96 le0
User Networking
editWith the default networking back end of QEMU we can utilize the -redir option to enable connections between host and guest over Telnet (port 23), rlogin to the guest (port 513), or the copying of files between host and guest with rcp (port 514). Telnet can also be used to connect from the guest to the outside world if the host is connected to the Internet. For rlogin and rcp we'll need root access on a Linux host system to define packet filter rules. Start the emulated machine with:
$ qemu-system-sparc -monitor tcp::4444,server,nowait -bios ss5.bin -m 32 -nographic -hda sunos414.img \ -redir tcp:4423:10.0.2.15:23 -redir tcp:4513:10.0.2.15:513 -redir tcp:4514:10.0.2.15:514
Use the info command of the QEMU monitor to print a table of the forwarded ports:
(qemu) info usernet info usernet VLAN 0 (user.0): Protocol[State] FD Source Address Port Dest. Address Port RecvQ SendQ TCP[HOST_FORWARD] 10 * 4423 10.0.2.15 23 0 0 TCP[HOST_FORWARD] 9 * 4513 10.0.2.15 513 0 0 TCP[HOST_FORWARD] 8 * 4514 10.0.2.15 514 0 0
The ports on the host that are forwarded must be greater than 1023 (as long as you don't run qemu as root). To check on which ports QEMU is listening, do:
$ netstat -tulpn | grep qemu tcp 0 0 0.0.0.0:4514 0.0.0.0:* LISTEN 27021/qemu-system-s tcp 0 0 0.0.0.0:4423 0.0.0.0:* LISTEN 27021/qemu-system-s tcp 0 0 0.0.0.0:4444 0.0.0.0:* LISTEN 27021/qemu-system-s tcp 0 0 0.0.0.0:4513 0.0.0.0:* LISTEN 27021/qemu-system-s
After the guest system is booted we are able to connect from the host to the guest:
$ telnet localhost 4423
and from the guest to the host:
# telnet 10.0.2.2
or from the guest to the outside (india.colorado.edu reports the current Coordinated Universal Time):
# telnet 128.138.140.44 13 Trying 128.138.140.44 ... Connected to 128.138.140.44. Escape character is '^]'. 56365 13-03-14 00:33:39 50 0 0 147.2 UTC(NIST) * Connection closed by foreign host.
We can even check with the ping command from the guest that the host is alive:
# ping 10.0.2.2 10.0.2.2 is alive
Rlogin and rcp use fixed ports. We define port redirection rules on the host to get a connection to the guest. For this to work, it may be necessary to disable your firewall (or see below for a more accurate setting) before you execute as root:
$ iptables -t nat -I OUTPUT -o lo -p tcp --dport 513 -j REDIRECT --to-ports 4513 $ iptables -t nat -I OUTPUT -o lo -p tcp --dport 514 -j REDIRECT --to-ports 4514
Print the rules with:
$ iptables -t nat -n -L OUTPUT Chain OUTPUT (policy ACCEPT) target prot opt source destination REDIRECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:514 redir ports 4514 REDIRECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:513 redir ports 4513
These rules can be removed with:
$ iptables -t nat -D OUTPUT 1 $ iptables -t nat -D OUTPUT 1
Under openSUSE 11.4, disabling the firewall would remove these rules. Therefore we would stop the firewall first and then define the rules. Alternatively we could keep the firewall up and remove only the following single rule:
$ iptables -t raw -n -L OUTPUT Chain OUTPUT (policy ACCEPT) target prot opt source destination NOTRACK all -- 0.0.0.0/0 0.0.0.0/0
with the command:
$ iptables -t raw -D OUTPUT 1
This rule can be restored with:
$ iptables -t raw -A OUTPUT -j NOTRACK
or by stopping the firewall and starting it again. Now we should be able to connect from the host to the guest with:
$ rlogin -l root localhost
and to copy files as root on the host in both directions:
$ rcp file_on_host localhost: $ rcp localhost:file_on_guest .
To use rcp as a regular user on the host, we would have to create a user with the same name on the guest. For reasons unknown to the author a remote shell command like
$ rsh localhost uname
fails with:
socket: protocol failure in circuit setup
Rlogin, rsh and rcp from the guest to the host do not work in this setting. Port redirection with
$ ssh -L 23:localhost:4423 localhost
(as root) works for Telnet, but when redirecting the ports 513 and 514 over SSH, connections can't be established from the host. The error messages are:
rlogind: Permission denied.
when trying to rlogin to the guest and
rcmd: localhost: short read
when trying to rcp to the guest.
Using a TAP Device
editIn the previous section we have seen the shortcomings of QEMU's user networking. Using the tap networking back end allows for a unrestricted connection between host and guest. To create and configure a TUN/TAP interfaces on a Linux host we need root access:
$ tunctl -t tap0 -u user_name_on_host $ ifconfig tap0 10.0.2.2 netmask 255.255.255.0
We start qemu with the command:
$ qemu-system-sparc -monitor tcp::4444,server,nowait -nographic -bios ss5.bin -m 32 -hda sunos414.img \ -net nic,vlan=0 -net tap,vlan=0,ifname=tap0,script=no,downscript=no
From the host we use the address 10.0.2.15 to access the host and from the guest we use the address 10.0.2.2 to access the host. For rlogin & co. on the guest we need to refer to the host system with the host name defined in /etc/hosts. We should be able to ping and to connect over Telnet, rlogin, rsh, and rcp without problem if permitted by the host configuration. The root rlogin may be disabled completely on the host and for users we usually need to add the address 10.0.2.2 to ~/.rhosts. A firewall on the host must be configured (or disabled) to allow for such connections. We can also run X Window programs on the guest by displaying them on the host X server:
$ xhost +10.0.2.15
(on the host) will allow access from the guest and
# usr/openwin/bin/xterm -display 10.0.2.2:0
starts the terminal emulator for the X Window System on the guest, displayed in an window on the host. We can give the guest access to the Internet by enabling IP forwarding on the host:
$ echo 1 > /proc/sys/net/ipv4/ip_forward $ iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
where wlan0 is the network device that connects the host to the Internet (often eth0 for a LAN connection). The firewall on the host might need to be disabled to make it work.
Running OpenWindows
editWith the TAP/TUN network setup, set the following environment variables on the guest:
# setenv DISPLAY 10.0.2.2:1.0 # setenv OPENWINHOME /usr/openwin # setenv PATH $OPENWINHOME/bin:$PATH # setenv LD_LIBRARY_PATH $OPENWINHOME/lib # setenv MANPATH $OPENWINHOME/share/man:/usr/man # setenv HELPPATH $OPENWINHOME/lib/help
We export the display to a second X server running inside a window of our host X server:
$ Xephyr :1 -ac -screen 1152x900 &
Start the window manager on the guest:
# olwm &
You should now see the OpenWindows desktop in he Xephyr window. Click with the right mouse button for the application menu. Unfortunately, the help viewer refuses to start with:
XView error: NULL pointer passed to xv_set