[Xen-users] Physical to Virtual Migration

[James Miller <jimm@xxxxxxxxxxxxxxx>]

Hello everyone,

I'm having an issue migrating an OLD debian 3.0 linux server (2.4.18 
kernel) to an HVM domU.  I'm using Xen 3.3.0 compiled from source. 

Here's the process I took:
1. Carve out a chunk of space from an LVM Volume group
2. Create and boot from a Debian live CD ISO
3. Fdisked the LV into 2 partitions /dev/hda1 (OS)  /dev//hda2 (SWAP)
4. Formatted /dev/hda1 as ext3 and /dev/hda2 (swap)
5. Mounted /dev/hda1 /mnt/
6. Restored from a full backup my physical server onto /mnt
7. chroot-ed /mnt
8. Edited lilo.conf and fstab to match what I have, ran lilo and 
everything looks good.
9. Run lilo and reboot

When I reboot I get the following errors about reisersf -- which makes 
no sense considering I'm using ext2/ext3:
EXT3-fs unsupported inod size: 256
read_super_block: can't find a reiserfs filesytem on (dev 03:01, block 
64, size 1024)
read_super_block: can't find a reiserfs filesytem on (dev 03:01, block 
8, size 1024)
Kernel panic VFS: Unable to mount root fs on 03:01

When I boot the Debian Live-CD it looks like the PIIIX3 IDE controller 
is detected and hda is QEMU HARDDSIK.
Again, this doesn't make any sense, to me, since I'm using ext2/ext3 
fs.  But I am wondering if it has anything to do with OLD e2fs tools.. 
or maybe if there's a driver bug with a 2.4.18 kernel and the IDE 
driver.  This old server has everything compiled into the kernel, no 
modules. 

/etc/lilo.conf for domU:
lba32
install=/boot/boot-menu.b
map=/boot/map
vga=normal
default=Linux
       image=/vmlinuz
       label=Linux
       read-only

image=/vmlinuz.old
       label=LinuxOLD
       read-only
       optional


Modified /etc/fstab file for domU:
/dev/hda1       /               ext2    errors=remount-ro     0       1
/dev/hda2       none            swap    sw                        0       0
proc            /proc           proc    defaults                     
0       0
Config File:
kernel = '/usr/lib/xen/boot/hvmloader'
builder='hvm'
boot='dc'
memory = 3072
name = "newt-test"
vif = [ ' mac=aa:00:ef:49:c1:23 ' ]
device_model = '/usr/lib/xen/bin/qemu-dm'
# dhcp = "dhcp"
disk = [ 
'phy:/dev/vg01/newt-test,hda,w','file:/etc/xen/binary.iso,hdc:cdrom,r' ]
vcpus = 1
root = "/dev/hda1 ro"
extra = "xencons=tty"
vnc=1
vnclisten='0.0.0.0'
vncpasswd='xxxxxxxxxxx'
apic = 1
acpi = 1
vncdisplay=4
vncunused=1


Thanks for any suggestions/pointers.

--Jim




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