thr3ads.net - Xen users - [Xen-users] Help needed in installing xen on ubuntu [Jun 2008]

If this information is useful, please help other people find it:
Share via:

Roopesh

2008-Jun-21 06:02 UTC

[Xen-users] Help needed in installing xen on ubuntu

Hi,

I tried installing Xen(xen-3.1.0-install-x86_32.tgz) on ubuntu 7.1 (HP
Pavilion dv 6000 core 2 duo laptop). Installation seemed to have completed
properly but while booting it throws the following kernal alert and exists.

VFS. Cannot open root device "sda5" or unknown block (0,0)
Please append a correct root='''' boot option.
Kernal panic- not synching. VFS: unable to mount root fs on unknown-block
(0,0)

In my laptop, I have both windows and linux installed. I am not much
familiarity with linux, so I don''t whether I have used a wrong root
device.
I have given below the grub files content, logs generated while installing
xen etc. below.

The following is a part of /boot/grub/menu.lst file
=============================={{
## ## End Default Options ##

title           Xen 3.0 / XenLinux 2.6
kernel          /boot/xen-3.1.gz dom0_mem=262144
module          /boot/vmlinuz-2.6-xen root=/dev/sda5 ro console=tty0


title           Ubuntu 7.10, kernel 2.6.22-14-generic
root            (hd0,4)
kernel          /boot/vmlinuz-2.6.22-14-generic
root=UUID=0d1ac86b-8b79-4025-b244-9ed68b160734 ro quiet splash
initrd          /boot/initrd.img-2.6.22-14-generic
quiet

title           Ubuntu 7.10, kernel 2.6.22-14-generic (recovery mode)
root            (hd0,4)
kernel          /boot/vmlinuz-2.6.22-14-generic
root=UUID=0d1ac86b-8b79-4025-b244-9ed68b160734 ro single
initrd          /boot/initrd.img-2.6.22-14-generic

title           Ubuntu 7.10, memtest86+
root            (hd0,4)
kernel          /boot/memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
title           Other operating systems:
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title           Windows Vista/Longhorn (loader)
root            (hd0,0)
savedefault
makeactive
chainloader     +1


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda3
title           Windows Vista/Longhorn (loader)
root            (hd0,2)
savedefault
makeactive
chainloader     +1

}}


The following is the log message when I  installing xen
======================================={{
root@advaith:/home/roopesh# cd xenapp/dist/
root@advaith:/home/roopesh/xenapp/dist# sh ./install.sh
Installing Xen from ''./install'' to ''/''...
 - installing for udev-based system
 - modifying permissions
All done.
Checking to see whether prerequisite tools are installed...
Xen CHECK-INSTALL  Tue Jun 10 00:26:00 IST 2008
Checking check_brctl:
 *** Check for the bridge control utils (brctl) FAILED
Checking check_crypto_lib: OK
Checking check_iproute: OK
Checking check_libvncserver: unused, OK
Checking check_python: OK
Checking check_python_xml: OK
Checking check_sdl: unused, OK
Checking check_udev: OK
Checking check_zlib_lib: OK
All done.
}}


After installing, the /boot/ dir has the following contents
======================================={{
root@advaith:/boot# ls

abi-2.6.22-14-generic
grub
memtest86+.bin
vmlinux-syms-2.6.18-xen
vmlinuz-2.6-xen  xen-3.gz
config-2.6.18-xen
initrd.img-2.6.22-14-generic
System.map-2.6.18-xen
vmlinuz-2.6.18-xen
xen-3.1.0.gz
xen.gz
config-2.6.22-14-generic
initrd.img-2.6.22-14-generic.bak
System.map-2.6.22-14-generic
vmlinuz-2.6.22-14-generic
xen-3.1.gz
xen-syms-3.1.0
}}


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Tim Post

2008-Jun-21 07:22 UTC

head link

Re: [Xen-users] Help needed in installing xen on ubuntu

On Sat, 2008-06-21 at 11:32 +0530, Roopesh wrote:
> The following is a part of /boot/grub/menu.lst file 
> ==============================> {{
> ## ## End Default Options ##
> 
> title           Xen 3.0 / XenLinux 2.6
> kernel          /boot/xen-3.1.gz dom0_mem=262144
> module          /boot/vmlinuz-2.6-xen root=/dev/sda5 ro console=tty0
Hmm, looks like your missing an initrd (and need one). Oddly, apt-get
should have generated one for you.

Does an initrd.img-2.6-xen exist in boot? If so add it like so:

title           Xen 3.0 / XenLinux 2.6
kernel          /boot/xen-3.1.gz dom0_mem=262144
module          /boot/vmlinuz-2.6-xen root=/dev/sda5 ro console=tty0
module          /boot/initrd.img-2.6-xen

It will probably be initrd.img-2.6.24.xx-xen , ls will turn it up.

If one does not exist, make one via :

mkinitramfs -o /boot/initrd.img-2.6-xen 2.6-xen 

Note, 2.6-xen may not work, you will need to see what (exact) version of
the kernel you are using. If you see , for
instance /boot/linux-2.6.24-3-xen , you would specify 2.6.24-3-xen.

Most likely, ext3 (or whatever file system /dev/sda5 is) is not built
into your kernel, and you need to load that module before it can be
mounted and used.

HTH
--Tim

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Tim Post

2008-Jun-21 07:25 UTC

head link

Re: [Xen-users] Help needed in installing xen on ubuntu

Sorry,

My mail client is being difficult and I did not see the last part of
your text. 

You would want to specify ''2.6.18-xen'' when making your
initramfs, which
it looks like you need to do.

Sorry,
--Tim

On Sat, 2008-06-21 at 15:22 +0800, Tim Post wrote:> On Sat, 2008-06-21 at 11:32 +0530, Roopesh wrote:
> 
> > The following is a part of /boot/grub/menu.lst file 
> > ==============================> > {{
> > ## ## End Default Options ##
> > 
> > title           Xen 3.0 / XenLinux 2.6
> > kernel          /boot/xen-3.1.gz dom0_mem=262144
> > module          /boot/vmlinuz-2.6-xen root=/dev/sda5 ro console=tty0
> 
> Hmm, looks like your missing an initrd (and need one). Oddly, apt-get
> should have generated one for you.
> 
> Does an initrd.img-2.6-xen exist in boot? If so add it like so:
> 
> title           Xen 3.0 / XenLinux 2.6
> kernel          /boot/xen-3.1.gz dom0_mem=262144
> module          /boot/vmlinuz-2.6-xen root=/dev/sda5 ro console=tty0
> module          /boot/initrd.img-2.6-xen
> 
> It will probably be initrd.img-2.6.24.xx-xen , ls will turn it up.
> 
> If one does not exist, make one via :
> 
> mkinitramfs -o /boot/initrd.img-2.6-xen 2.6-xen 
> 
> Note, 2.6-xen may not work, you will need to see what (exact) version of
> the kernel you are using. If you see , for
> instance /boot/linux-2.6.24-3-xen , you would specify 2.6.24-3-xen.
> 
> Most likely, ext3 (or whatever file system /dev/sda5 is) is not built
> into your kernel, and you need to load that module before it can be
> mounted and used.
> 
> HTH
> --Tim

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Xen users - Jun 2008 - Help needed in installing xen on ubuntu

[Xen-users] Help needed in installing xen on ubuntu

Re: [Xen-users] Help needed in installing xen on ubuntu

Re: [Xen-users] Help needed in installing xen on ubuntu