Re: Migrating from KVM to XEN - kernel panic

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Well that was more helpful than I could reasonable hope for but alas, the error didn't change much:
device-mapper: dm-raid45: initialized v0.2594l
Waiting for driver initialization.
Scanning and configuring dmraid supported devices
Scanning logical volumes
  Reading all physical volumes.  This may take a while...
  Found volume group "vg00" using metadata type lvm2  ## this is the VG on the KVM host
Activating logical volumes
  Volume group "virt01vg00" not found  ## this is the VG on the XEN host
Creating root device.
Mounting root filesystem.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
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
ERROR opening /dev/console: No such file or directory
Trying to use fd 0 instead.
WARNING: can't access (null)
exec of init ((null)) failed!!!: Bad address
Kernel panic - not syncing: Attempted to kill init!


I wonder if i need to mount the block device and edit fstab? 

Christopher Hunt

On Mon, Nov 9, 2009 at 11:09 AM, Christopher G. Stach II <cgs@xxxxxxxxx> wrote:
----- "Christopher Hunt" <dharmachris@xxxxxxxxx> wrote:

> This brings me back to suspecting the problem is in the different file
> structures. I'm still trying to wrap my head around the other replies
> in this thread.

mkinitrd in dom0 with xenblk and xennet and use that new initrd for the guests. After you get the guests up and running, install kernel-xen in each one and switch to using pygrub. The following should handle the first part, but no warranties implied. :)

mkinitrd --with=xenblk --with=xennet --preload=xenblk --preload=xennet /boot/initrd-2.6.18-164.6.1.el5xen-domU.img 2.6.18-164.6.1.el5xen

for i in /etc/xen/guest[0-9]*; do
 cp ${i} ${i}.bak
 sed -i '/^ramdisk/cramdisk = "/boot/initrd-2.6.18-164.6.1.el5xen-domU.img"' ${i}
done

--
Christopher G. Stach II


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