[Xen-users] How to setup Xen guest

[Peter Teoh <htmldeveloper@xxxxxxxxx>]

> On Sat, Jan 16, 2016 at 05:37:20PM -0800, Peter Teoh wrote:
> > Hi,
> > Got a question:
> > I just setup my Xen hypervisor running inside Ubuntu 14.04.
> >
> > [SNIP]
> >
> > b.   My OS is Ubuntu 64-bit, but the dom0 in the ps listed above started by
> > qemu-system-i386?  So where is dom0 running right now?    Can I connect to
> > the console if it does have have any graphical interface (nographics inside
> > qemu command line).
> >
> > [SNIP]
> >
> > So my Dom0 is running 64-bit Ubuntu (which is what I am having right now),
> > but ps list it as using qemu-system-i386 to run it?
>
> Dom0 is your host. It's Ubuntu, it's what you installed Xen on, it's
> what you're typing xl commands into.


Thank you Sean for your reply.

I managed to get domU working, running 64-bit CentOS.

Domain-0                                     0  7299     6     r-----    2074.6
centos.hvm                                   3   512     1     -b----      19.1

But doing a "ps -ef" inside the dom0, which is running Ubuntu 14.04
64-bit, I am getting:

root      3321     1  0 07:28 ?        00:00:00
/usr/bin/qemu-system-i386 -xen-domid 0 -xen-attach -name dom0
-nographic -M xenpv -daemonize -monitor /dev/null -serial /dev/null
-parallel /dev/null -pidfile /var/run/qemu-dom0.pid
root      7632  2406  3 08:49 ?        00:00:54
/usr/bin/qemu-system-i386 -xen-domid 3 -chardev
socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-3,server,nowait -mon
chardev=libxl-cmd,mode=control -nodefaults -name centos.hvm -vnc
127.0.0.1:0,to=99 -display none -sdl -device cirrus-vga -global
vga.vram_size_mb=8 -boot order=cda -net none -machine xenfv -m 504
-drive 
file=/sda1/home/tteikhua/xen/disk1.img,if=ide,index=0,media=disk,format=raw,cache=writeback
-drive 
file=/sda1/home/tteikhua/mesa_development/CentOS-7.0-1406-x86_64-DVD.iso,if=ide,index=2,readonly=on,media=cdrom,format=raw,cache=writeback,id=ide-5632

Now my question - same as before, is why is qemu-system-i386 running?
And so it is emulating my 64-bit Ubuntu and CentOS?

I am puzzled?


>
> > d.   I just simply want an interface to pop up showing me the CentOS bootup
> > disk, so I I can install CentOS guest inside my Ubuntu host, how to specify
> > that?
>
> Use a VNC client (e.g. Remmina, TightVNC, etc.) to connect to the domU
> virtual machine. It acts just like any normal VNC session.

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