Re: [Xen-users] Installing Xen on Debian Sarge

[Miguel Enrique Cobá Martínez <m.coba.m@xxxxxxxxx>]

Hans-Christian Armingeon wrote:
> I installed debian 3.1 on a lvm2 root, and it worked without problems. Even 
> with the standard mkinitrd.
>
> Perhaps the problem is in your mkinitrd config ?
>
> Johnny
Yes, I have my current debian sarge root on a lvm partition and I have 
no problems. But when I wanted to boot my custom compiled xen-kernel, it 
didn't boot, because the root was on a lvm, so, searching on google and 
the lists, I found that it was a problem when usint lvm roots. The 
solution given there was to add a initrd so that the lvm root could be 
mounted correctly.
But when I tried to:

debian:~# mkinitrd -o initrd-2.6.11debianxen0 2.6.11debianxen0
File descriptor 3 left open
File descriptor 4 left open
File descriptor 5 left open
File descriptor 6 left open
File descriptor 7 left open
    Finding all volume groups
    Finding volume group "xenvg"
    Finding volume group "debianvg"
/usr/sbin/mkinitrd: /dev/mapper/debianvg-rootlv: Kernel does not support LVM

So in further research, I found in

http://pigeon.dyndns.org/stuff/lvm-root/lvm-root.html

that /usr/share/doc/lvm2/examples/lvm2create_initrd.gz
was made to address this problem
after that, I added to menu.lst

title Debian GNU/Linux, Xen 2.6.11xen0, testing 25/5/2005
root (hd0,2)
kernel /xen.gz dom0_mem=195584
module /xen-linux-2.6.11debianxen0 root=/dev/ram0 
lvm2root=/dev/mapper/debianvg-rootlv ro
module /initrd-lvm2-2.6.11debianxen0.gz

and it booted ok.

Auf wiederlesen!
> Am Mittwoch, 19. Oktober 2005 17:11 schrieb Miguel Enrique Cobá Martínez:
>
> > [...]
> > 3. I had to build a initrd image so that the boot process could mount 
> > the root partition on lvm. I use the script from
> > /usr/share/doc/lvm2/examples/lvm2create_initrd.gz
> > to build the initrd, as mkinitrd has a bug with lvm root partitions.
> > 4. I updated grub to use the initrd and all worked ok.
> > [...]

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