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troubleshooting Question

Xenserver Dom0 will not start

Avatar of oratek
oratek asked on
LinuxLinux DistributionsVirtualization
5 Comments1 Solution712 ViewsLast Modified:
Hi all,

I am trying to get my very first Xen Server up and running for development purposes.
The hardware is an Dell Optiplex 760 Desktop with a 250Gb HDD and 2Gb Ram.
(I understand that this is a small machine but this is only a proof of concept test).

I have installed Fedora Core 10 as the host OS as this is what I am most familiar with and use it on number of servers, desktops and notebooks.

In order to get Xen working I have been to www.xen.org and downloaded the Xen Hypervisor 3.4.2 and proceeded to follow the installation instructions on the site to compile the source.

After I added a few extra needed libraries, I have been able to complete the make and make install processes and modified grub to start the Xen kernel from the grub menu.

Sadly this is as far as I get as during start up of the Xen kernel I get the following error.

VFS: Cannot open root device "sda1" or unknown-block(0,0)
Append correct root= option.

Grub menu.lst is as follows
[root@vhost ~]# cat /boot/grub/menu.lst
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
#          initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.27.5-117.fc10.i686)
      root (hd0,0)
      kernel /vmlinuz-2.6.27.5-117.fc10.i686 ro root=UUID=34026389-07e9-4a6e
99b6-1568e4cae0e4 rhgb quiet
      initrd /initrd-2.6.27.5-117.fc10.i686.img
title Xen 3.4.2 / XenLinux 2.6.18
      root (hd0,0)
      kernel /xen-3.4.gz dom0_mem=262144
      module /vmlinuz-2.6.18.8-xen root=/dev/sda1 ro

What am I missing as the documentation doesn't show much about partition use for Xen and I am assuming that for the xen kernel that it's root will be the same as the existing host OS
ASKER CERTIFIED SOLUTION
Avatar of Kerem ERSOY
Kerem ERSOYFlag of Turkey imagePresident

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