Re: [Xen-users] howto install from cd/network/image/foo with 3.03

[Marc Teichgraeber <radar@xxxxxxxxxxx>]

Luke S. Crawford wrote:
> to make the 'boot from install media' stuff work from within Xen, you 
> must use HVM.  The config file you posted is not using HVM.
First of all, thank you very much for your quemu-example, this helps me 
much. Its solves my problem, so everything further is actually not so 
important, but :)
  * How would a HVM-config file look like? It would be nice to know to 
understand the difference.
  * Why can I not do this 'boot from install media' stuff in not 
HVM-configs? I dont understand this, i mean, the prophet has to climb 
the mountain someway, respectively the guest-operating system hast to 
enter the host. Momentarily I rsync one instance to another and make it 
unique afterwards or rsync from a "real" System into sparse files on my 
guest an make them bootable the.
radar
> If you want to install from a CDROM without using HVM, you can do so 
> using qemu;  it's a little slower, but it works fine.
> first, if you need network, create a /etc/qemu-ifup that looks 
> somethying like this:
> #!/bin/sh
> /sbin/modprobe tun
> /sbin/ifconfig $1 promisc 0.0.0.0
> /usr/sbin/brctl addif xenbr0 $1
>
> (this assumes you have xenbr0 configured for xen)  - if you are 
> installing from a cd that does not require network access, you can 
> skip this bit.
> Next, make sure you shutdown any DomU that uses the partition or file 
> you want to install on.  Xen is good at checking to make sure you 
> don't step on other people's disks, but Qemu and Xen are not aware of 
> oneanother in this way.
> Now, you can start up your install using qemu:
>
> qemu -hda /home/lsc/centos3  -cdrom 
> /home/lsc/CentOS-3.8-server-i386.iso -boot d -vnc 2
> (this will allow you to VNC into this server, screen 2 and see the 
> install)
> (instead of /home/lsc/centos3, you could use /dev/hda4 or another 
> physical partition if you like;  instead of 
> /home/lsc/CentOS-3.8-server-i386.iso you can use /dev/cdrom, if you 
> like.)
> when you are done, setup a xen DomU in the usual way.  in the disk= 
> section add file: or phy: as appropriate before the disk you passed to 
> qemu as -hda.
> On Fri, 26 Jan 2007, Marc Teichgraeber wrote:
> > Meeeep, thats not working for me.
> > My Xen version is Xen 3.0.3
> > Here is my config for a test domain
> > ------------------------------------------------------------------------------------------------------------------ 
> >
> > disk = [ 'file:/data/xen/test/hda,hda,w', 
> > 'file:/data/xen/SuSE_9.3_CD1.iso,hdc:cdrom,r' ]
> > memory = 2048
> > vcpus = 1
> > image = 'linux'
> > name = 'test'
> > vif = [ 'mac=00:16:3e:b7:77:3d' ]
> > localtime = 1
> > on_reboot = 'restart'
> > on_reboot = 'destroy'
> > on_crash = 'restart'
> > extra = 'TERM=xterm'
> > kernel = '/boot/vmlinuz-xen'
> > ramdisk = '/boot/initrd-xen'
> > root = '/dev/hda ro'
> > boot = 'd'
> > -------------------------------------------------------------------------------------------------------------------- 
> >
> > No booting from the iso. I also tried "boot='c'", "boot=''cd", 
> > boot='dc'".
> > I think there is no more working "boot" parameter anymore in Xen 3.0.3.
> > There is some different way to schoose the boot-medium.
--
--------------------------------
Marc Teichgräber
Systemadministration

neofonie GmbH
Robert-Koch-Platz 4
10115 Berlin
fon: +49.30 24627 222
fax: +49.30 24627 120

marc.teichgraeber@xxxxxxxxxxx
http://www.neofonie.de
--------------------------------


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