Re: install/start problem: xen 2.0 / NetBSD 2.0, 2.0.2 and 3.0 Beta

[Rainer Brinkmöller <rainer.brinkmoeller%web.de@localhost>]

Hi,

and thanks a lot for the answer. It shows me the right way to 
understand the documentation (NetBSD/xen-Howto).
There were no further messages in /var/log/xend-debug.log then what i 
wrote befor. Yes, there is a /kern/xen directory
and /kern seems to mount by default (i don't have to manually mount it).
My main problem was that i did misunderstood the howto (maybe my english 
is not as good as i thought). I read something like:
"It use a config file for its parameters in /etc/xen/." And i was 
wondering why i don't find this folder. So, after reading
your mail, i did create it by myself, also /etc/xen/scripts and the 
scripts discribed in the howto.

The domain0 already did work fine (it really was a NetBSD 3_BETA 
kernel). The command "xm list"shows what it
should. And after creating the scripts (and using disklabel to prepare 
the reseved partition) the installation of NetBSD
in the unprivileged domain was successful.

Now there is only one problem (till now): I am not sure about the 
network configuration. In the /etc/xen/nbsd in the
line for vif i put the real mac adress of my second ethernet card and 
the local network adress 192.168.1.88 i want to use
(i think that i shouldn't do that, but i'm not sure). My knowledge about 
bridging is nearly null so i don't know how to configure it.
I also don't really understand the notes in the script /etc/xen/nbsd. 
Further i create /etc/ifconfig.xennet0 within "inet 192.168.1.88
netmask 0xffffff00" and configured /etc/hosts, /etc/mygate, 
/etc/relsolv.conf and the rc.conf nearly like in domain0
(just used a other hostname). This seem not to work. The ping command 
don't received packets.

here is a part of the "dmesg" output of the unprivileged domain:
xencons0 at hypervisor0: Xen Virtual Console Driver
xencons0: console major 143, unit 0
Initialising Xen virtual ethernet frontend driver.
npx0 at hypervisor0: using exception 16
xennet0 at hypervisor0: Xen Virtual Network Interface
Xen clock: using irq 3
xennet0: using irq 4
xennet0: MAC address <here is the real mac address of my 2nd network 
interface card like in /etc/xen/nbsd>

Hope this help to understand what i mean. If you need more information 
please let me know. Again thanks a lot.



Manuel Bouyer schrieb:

> On Sun, May 15, 2005 at 06:50:41PM +0200, Rainer Brinkmöller wrote:
>  
>
> > hello,
> >
> > since a few weeks i try to install xen on NetBSD 2.0, 2.0.2 and 3.0 beta.
> >    
>
> Note that xen 2.0 is only supported in the 3.0_BETA (and current) kernels.
>
>  
>
> > The first steps seem to be passed successfully. From the grub menu i 
> > select the domain0 and it start.
> > The steps i have done are based on the documentation at 
> > http://www.netbsd.org/Ports/xen/howto.html.
> > First i did use the NetBSD versions 2.0 and 2.0.2 because i did not 
> > found the neccessary files for NetBSD 2.0_C4 like
> > written in 
> > http://www.cl.cam.ac.uk/Research/SRG/netos/xen/downloads/NetBSD/NetBSD-2.0_RC4/xen-i386/INSTALL.html. 
> >
> >
> > I did contact Christian Limpach because of my problem. His suggestion 
> > was that the MAKEDEV script i did use doesn't know
> > about the xen entries, at least not when i ask for it to create the 
> > "xen" devices. He was right. In NetBSD 2.0 and 2.0.2 the
> > MAKEDEV script really don't know about. The first time i did found the 
> > necessary entries unter NetBSD 3 beta.
> >    
>
> See above
>
>  
>
> > Here is my main problem: the execution of "xend start" don't really work.
> > At the /var/log/xend-debug.log i found the following entry:
> > "*/etc/xen/scripts/network: not found*"
> >    
>
> Shouldn't be a problem, it can run without this. Any others messages in
> xend-debug.log and xend.log ?
> Do you have /kern mounted ? Do you have a /kern/xen directory ?
>
>  
>
> > I did not wondering about because there is no xen directory under /etc 
> > after the port-installation of xentools 2.0.
> >
> > Do you have an idea what i did wrong? Or what i can do to have a bit 
> > more success?
> >
> > Here is a list of the steps i had done:
> >
> >    
> >
> > > Download of the newest pkgsrc (pkgsrc.tar.gz about 26 MB)
> > >      
> > (It was allways a new NetBSD-Installation so i did not have the 
> > /usr/pkgsrc folder)
> >
> >    
> >
> > > unpack the file pkgsrc.tar.gz: tar -xzvpf pkgsrc.tar.gz -C /usr
> > >      
> > >
> > > Package Collection Update.
> > >      
> > command: cd /usr/pkgsrc/pkgtools/pkg_install
> > command: make install
> >
> >    
> >
> > > Installation of the xentools20
> > >      
> > command: cd /usr/pkgsrc/sysutils/xentools20
> > command: make install
> >
> >    
> >
> > > Installation of grub
> > >      
> > command: cd /usr/pkgsrc/sysutils/grub
> > command: make install
> >
> >    
> >
> > > configuring the /grub/menu.lst nearly like the example
> > >      
> > here are my entrys (for grub and NetBSD 2.0):
> > # ------------------ grub-Konfigurationsdatei für NetBSD/xen. 
> > ------------------
> > default=0
> > timeout=15
> > serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
> > terminal --timeout=15 vga console
> > title Xen 2.0 / NetBSD (hda0, vga)
> > root(hd0,0)
> > kernel (hd0,a)/xen.gz dom0_mem=131072
> > module (hd0,a)/netbsd-XEN0 root=/dev/hda1 ro console=tty0
> > title Xen 2.0 / NetBSD (hda0, serial)
> > root(hd0,0)
> > kernel (hd0,a)/xen.gz dom0_mem=131072 com1=115200,8n1
> > module (hd0,a)/netbsd-XEN0 root=/dev/hda1 ro console=ttyS0
> > title NetBSD 2.0
> > root (hd0,a)
> > kernel --type=netbsd /netbsd-PREXEN
> > title NetBSD chain
> > root        (hd0,0)
> > chainloader +1
> > ## ------------------Ende der grub-Konfigurationsdatei. ------------------
> >
> >    
> >
> > > grub installation.
> > >      
> > command: grub-install /dev/rwd0d
> >
> >    
> >
> > > Download of the XEN installation file from
> > >      
> > http://www.cl.cam.ac.uk/Research/SRG/netos/xen/downloads/xen-2.0.5-install.tgz 
> >
> > unpack the file xen.gz to my root filesystem
> > command: cp xen.gz /xen.gz
> >
> >    
> >
> > > Download of the NetBSD/XEN-Kernel
> > >      
> > ftp://ftp.netbsd.org/pub/NetBSD/misc/reed/NetBSD-daily/current/20050426/i386/binary/kernel/netbsd-XEN0.gz 
> >    
>
> You'd better use a newer kernel from ftp://ftp.netbsd.org/pub/NetBSD-daily/
>
>  
>
> > unpack the file netbsd-XEN0 to my root file system
> > command: cp netbsd-XEN0 /netbsd-XEN0
> > (under NetBSD 3 Beta i did use the xen-kernel of the distribution)
> >    
>
> The kernel you used above is probably 3.99.x, that is, from the current
> branch and not 3.0_BETA.
>
>  
>
> > > create a copy of my base netbsd kernel
> > >      
> > command: cp /netbsd /netbsd-PREXEN
> >
> > Well. The reboot was fine. The domain0 did start. There was just a 
> > message which said:
> > "/etc/rc: WARNING: $xend is not set properly - see rc.conf(5)" a short 
> > time befor login prompt.
> > I do not understand what i should configure in /etc/rc.conf. The entry 
> > powerd is set to YES.
> >    
>
> You also need xend=YES
>
>  
>
> > Also i do not know what i have to do get the xen directory under /etc.
> > I did study a lot of documentations but did not found a answer.
> >    
>
> You have some infos in http://www.netbsd.org/Ports/xen/howto.html
>
>