[Xen-users] Trying to get CentOS guest running, but xm cant find the kernel image.

[Jim Lynch <jim@xxxxxxxxxxxxxxxxxx>]

I'm trying to get xen working on a SuSE box running CentOS as a guest. 
I installed SuSE 10.1 and it also installed xen kernels which boot fine,
other than they boot into non graphical mode.  So I selected a couple of
underused partitions and did a fresh install of CentOS 4.3.  Then I
downloaded xen-3.0.1-install-x86_64.tgz (this is an Intel 6300 duo core
system) and did a make world and a make install.  This was all while
running the stock CentOS kernel.  I ended up with this in /boot:
config-2.6.16.29-xenU      message.ja                  
vmlinuz-2.6.9-34.ELsmp
config-2.6.9-34.EL         System.map-2.6.16.29-xenU    vmlinuz-2.6-xenU
config-2.6.9-34.ELsmp      System.map-2.6.9-34.EL       xen-3.0.3-0.gz
grub                       System.map-2.6.9-34.ELsmp    xen-3.0.gz
initrd-2.6.9-34.EL.img     vmlinux-syms-2.6.16.29-xenU  xen-3.gz
initrd-2.6.9-34.ELsmp.img  vmlinuz-2.6.16.29-xenU       xen.gz
lost+found                 vmlinuz-2.6.16-xenU          xen-syms-3.0.3-0
message                    vmlinuz-2.6.9-34.EL

I obviously missed the step to create an initrd but that's not my
current problem.

So I booted into the SuSE xen kernel and did a

xm create -c myxen vmid=1
Using config file "myxen".
Error: Kernel image does not exist: /boot/vmlinuz-2.6.16.29-xenU
That didn't work.  It makes no sense that I would have to have a copy of
that kernel locally does it?  I thought that xen would look at the
configuration, the /etc/fstab on the CentOS system and try to load the
kernel from there.  After all, that's where install put it.  So xm isn't
finding it. Why?


Here's the disk layout.
fstab from the CentOS root.
/dev/hda1                /                       ext3    defaults        1 1
/dev/hda7               /boot                   ext3    defaults        1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /dev/shm                tmpfs   defaults        0 0
/dev/hda2               /home                   ext3    defaults        1 2
none                    /proc                   proc    defaults        0 0
none                    /sys                    sysfs   defaults        0 0

fdisk -l /hda
/dev/hda3 swap                    swap    defaults        0 0
   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1        1275    10241406    c  W95 FAT32 (LBA)
/dev/hda2            1276        2581    10490445   83  Linux
/dev/hda3            2582        2712     1052257+  82  Linux swap / Solaris
/dev/hda4            2713       14592    95426100    f  W95 Ext'd (LBA)
/dev/hda5            4019        9000    40017883+  83  Linux
/dev/hda6            9001       14592    44917708+  83  Linux
/dev/hda7            2713        2725      104359+  83  Linux  (This is
CentOS boot)
/dev/hda8            2726        4018    10385991   8e  Linux LVM

ls -lR /dev/VolGroup00/
/dev/VolGroup00/:
total 0
lrwxrwxrwx 1 root root 31 2006-11-28 09:17 LogVol00 ->
/dev/mapper/VolGroup00-LogVol00  (This is my CentOS root)
lrwxrwxrwx 1 root root 31 2006-11-28 09:17 LogVol01 ->
/dev/mapper/VolGroup00-LogVol01  (CentOS swap)
lrwxrwxrwx 1 root root 31 2006-11-28 09:17 LogVol02 ->
/dev/mapper/VolGroup00-LogVol02  (Centos home)


Here is my myxm config file.
# Kernel image file and (optional) ramdisk (initrd).
kernel = "/boot/vmlinuz-2.6.16.29-xenU"
ramdisk = "/boot/initrd-2.6.9-34.ELsmp.img"

memory = 64

name = "ExampleDomain"

vif = [ '' ]

disk = [ 'phy:VolGroup00-LogVol00,hda1,w' ]
disk = [ 'phy:VolGroup00-LogVol02,hda2,w' ]
disk = [ 'phy:hda7,hda7,w' ]
disk = [ 'phy:VolGroup00-LogVol01,hda3,w' ]

dhcp="dhcp"
root = "/dev/hda1 ro"

extra = "4"


xm create -c myxen vmid=1
Using config file "myxen".
Error: Kernel image does not exist: /boot/vmlinuz-2.6.16.29-xenU


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