This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Unable to boot Xen on top of Xen, any help?

If making an initrd does not work, then it's possible that your dom0 kernel build does not build all of the correct modules. You should be able to retrieve a kernel .config file for the non-Xen kernel (ideally, the distro would have a specific .config for a Xen dom0, which I know is the case for FC5), and use this as the configuration for building your dom0 kernel. Then try making an initrd as before.

Hope this helps.



On 30 May 2007, at 02:50, Mark Williamson wrote:

Are you using an initrd in the guest? Is your distro expecting you to use

Boot the guest non-Xen, then you can use mkinitrd to generate one for your
dom0 kernel and modify the grub.conf / menu.lst accordingly.


On Wednesday 30 May 2007, Wei, Jinpeng wrote:
Hi Everyone,

I am trying to run Xen-unstable in a HVM domain which is inside
Xen-unstable (I am using Intel VT-enabled processor). For the HVM domain
I am using a file-backed block device to hold the file system, so the
config file contains one line:

disk = [ 'file:path/imgfile, ioemu:hda, w' ]

But when I boot Xen-unstable in the HVM domain, I got the following
panic message:

Xen virtual console successfully installed as ttyS0
Event-channel device installed.
Freeing unused kernel memory: 192k freed
Red Hat nash version 5.1.19 starting
Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
input: ImExPS/2 Generic Explorer Mouse as /class/input/input1
Creating block device nodes.
Loading usbcore.ko module
usbcore: registered new driver usbfs
usbcore: registered new driver hub
Loading uhci-hcd.ko module
USB Universal Host Controller Interface driver v3.0
Loading ohci-hcd.ko module
Loading ehci-hcd.ko module
Loading jbd.ko module
Loading ext3.ko module
Loading ide-disk.ko module
Creating root device.
Mounting root filesystem.
mount: could not find filesystem '/dev/root'
Setting up other filesystems.
Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init!

It looks like that the internal dom 0 Linux (Red Hat nash version
5.1.19) does not recognize the disk device emulated by the external Xen.
This is because I can boot Fedora Core 6 in the same HVM domain, and
from dmesg I can see that the emulated disk was recognized as 'QEMU
HARDDISK, ATA DISK drive', but in the above message I can not see this

So my question is: How do I configure the dom0 Linux coming with
Xen-unstable so that it can recognize the emulated disk? Am I missing a
device driver for this QEMU HARDDISK?


Xen-devel mailing list

Dave: Just a question. What use is a unicyle with no seat? And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

Xen-devel mailing list

Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>