Mailing List Archive: Problem when booting Xen for the first time.

Problem when booting Xen for the first time.

May 11, 2005, 6:38 AM

Post #1 of 4 (916 views)

Hi all.
I wanna try Xen to compare it face to VMWare and face to QEmu but I've a
little problem.
I've installed it correctly - I think - and define in the grub.conf file
the following entry :
title Xen 2.0 / XenLinux 2.6.10
root (hd0,0)
kernel /xen.gz dom0_mem=131072
module /vmzlinuz-2.6.10-xen0 root=/dev/hda1 ro console=tty0

My Linux main partition is on hda1.
Files xen.gz and vmzlinuz-2.6.10-xen0 are present on /boot (I must also
highlight a problem in Xen documentation taht say to write /boot/xen.gz and
/boot/vmzlinuz... in the grub file. But when specifying /boot grub don't
find the files).

The problem is that Xen kernel boot (xen file is find) and apparently
vmzlinuz too but reboot after some few seconds. The only message I can read
is :
Kernel Panic : Syncing no init found try passing init= option to
kernel

Anyone have an ideas about that ??? What initrd image must I set to solve
this ?
What debug informations can I give you to detail more accurately the
problem ?

Thanks.
JB

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Re: Problem when booting Xen for the first time. [ In reply to ]

James.Bulpin at cl

May 11, 2005, 8:01 AM

Post #2 of 4 (1000 views)

Permalink

Simple answer: your root= option is wrong, it should probably be
root=/dev/hda2 or similar.

If your xen.gz and kernel image files live in /boot and grub can find
e.g /xen.gz rather than /boot/xen.gz on hd0,0, then you will find
that your Linux installation has a separate /boot partition (hda1) and
the root partition is elsewhere (e.g. hda2). Boot into native Linux
and run "mount" to see. The root partition (mounted as /) is the one you
want to use with root= on the kernel command line.

The documentation isn't wrong, it shows a typical example which will
vary with particular configurations.

James

On Wed, 2005-05-11 at 14:38, Jack B wrote:
> Hi all.
> I wanna try Xen to compare it face to VMWare and face to QEmu but I've a
> little problem.
> I've installed it correctly - I think - and define in the grub.conf file
> the following entry :
> title Xen 2.0 / XenLinux 2.6.10
> root (hd0,0)
> kernel /xen.gz dom0_mem=131072
> module /vmzlinuz-2.6.10-xen0 root=/dev/hda1 ro console=tty0
>
> My Linux main partition is on hda1.
> Files xen.gz and vmzlinuz-2.6.10-xen0 are present on /boot (I must also
> highlight a problem in Xen documentation taht say to write /boot/xen.gz and
> /boot/vmzlinuz... in the grub file. But when specifying /boot grub don't
> find the files).
>
> The problem is that Xen kernel boot (xen file is find) and apparently
> vmzlinuz too but reboot after some few seconds. The only message I can read
> is :
> Kernel Panic : Syncing no init found try passing init= option to
> kernel
>
> Anyone have an ideas about that ??? What initrd image must I set to solve
> this ?
> What debug informations can I give you to detail more accurately the
> problem ?
>
> Thanks.
> JB
>
> _________________________________________________________________
> MSN Hotmail : choisissez votre adresse @hotmail.fr
> http://www.imagine-msn.com/hotmail/default.aspx?locale=fr-FR
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users

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Re: Problem when booting Xen for the first time. [ In reply to ]

jblaine at mitre

May 11, 2005, 8:05 AM

Post #3 of 4 (895 views)

Permalink

I suggest taking the extra 'z' out of 'vmzlinuz' as a start :)
It should be vmlinuz not vmzlinuz

Jack B wrote:
> Hi all.
> I wanna try Xen to compare it face to VMWare and face to QEmu but I've
> a little problem.
> I've installed it correctly - I think - and define in the grub.conf
> file the following entry :
> title Xen 2.0 / XenLinux 2.6.10
> root (hd0,0)
> kernel /xen.gz dom0_mem=131072
> module /vmzlinuz-2.6.10-xen0 root=/dev/hda1 ro console=tty0
>
> My Linux main partition is on hda1.
> Files xen.gz and vmzlinuz-2.6.10-xen0 are present on /boot (I must also
> highlight a problem in Xen documentation taht say to write /boot/xen.gz
> and /boot/vmzlinuz... in the grub file. But when specifying /boot grub
> don't find the files).
>
> The problem is that Xen kernel boot (xen file is find) and apparently
> vmzlinuz too but reboot after some few seconds. The only message I can
> read is :
> Kernel Panic : Syncing no init found try passing init= option to
> kernel
>
> Anyone have an ideas about that ??? What initrd image must I set to
> solve this ?
> What debug informations can I give you to detail more accurately the
> problem ?
>
> Thanks.
> JB
>
> _________________________________________________________________
> MSN Hotmail : choisissez votre adresse @hotmail.fr
> http://www.imagine-msn.com/hotmail/default.aspx?locale=fr-FR
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

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Re: Problem when booting Xen for the first time. [ In reply to ]

d.rousseau at nnx

May 11, 2005, 8:51 AM

Post #4 of 4 (903 views)

Permalink

Le Wed, May 11, 2005 at 01:38:06PM +0000, Jack B [simply_jb@hotmail.com] a écrit:
> title Xen 2.0 / XenLinux 2.6.10
> root (hd0,0)
> kernel /xen.gz dom0_mem=131072
> module /vmzlinuz-2.6.10-xen0 root=/dev/hda1 ro console=tty0
>
> My Linux main partition is on hda1.
> Files xen.gz and vmzlinuz-2.6.10-xen0 are present on /boot (I must
> also highlight a problem in Xen documentation taht say to write
> /boot/xen.gz and /boot/vmzlinuz... in the grub file. But when
> specifying /boot grub don't find the files).

The Xen documentation is not wrong. It describes a case where /boot is
in the same partition as /, whereas in your case your seem to have /boot
on a separate one.

Dom

--
Dominique Rousseau
Neuronnexion, Prestataire Internet & Intranet
57, route de Paris 80000 Amiens
tel: 03 22 71 61 90 - fax: 03 22 71 61 99 - http://www.neuronnexion.fr

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