Xen users - Nov 2008 - converting full to para

virt-p2v was able to convert my centOS 5.2 physical machine to xen virtual
machine and it runs great. Now, I am working on to convert this full virt
machine to para virt .

Under my domU i have installed kernel-xen (since it is needed ) , and edited
my grub menu to use the installed kernel.

My grub menu file in domU looks like:

----
kernel /vmlinuz-2.6.18-92.1.17.el5xen ro root=/dev/VolGroup00/LogVol00 rhgb
quiet
initrd /initrd-2.6.18-92.1.17.el5xen.img
----

Here is my config file that I have used (for para):

-----
name = "localhost_localdomain"
uuid = "a57400f11c2138ec41087b80e813496e"
maxmem = 512
memory = 512
vcpus = 1
bootloader = "/usr/bin/pygrub"
disk = [
"file:/freespace/p2v-localhost_localdomain-200811061823-hda.img,hda,w"
]
vif = [ "mac=00:16:3e:e6:3b:e2" ]
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
#keymap = "en-us"
#serial = "pty"
extra = "xencons=tty"
bootloader = "/usr/bin/pygrub"
vfb = [  ]
vif = [ "mac=00:16:3e:17:03:9f,bridge=xenbr0" ]
----


The error I am getting is:

--

[root@ha2 xen]# xm create /etc/xen/localhost_localdomain -c
Using config file "/etc/xen/localhost_localdomain".
Started domain localhost_localdomain
PCI: Fatal: No PCI config space access function found
rtc: IRQ 8 is not free.
PCI: Fatal: No PCI config space access function found
rtc: IRQ 8 is not free.
i8042.c: No controller found.
Red Hat nash version 5.1.19.6 starting
  Reading all physical volumes.  This may take a while...
  No volume groups found
  Volume group "VolGroup00" not found
mount: could not find filesystem ''/dev/root''
setuproot: moving /dev failed: No such file or directory
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
switchroot: mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init!
---



Any help will be appreciated.

Thanks !
Paras.


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Paras pradhan wrote:
> virt-p2v was able to convert my centOS 5.2 physical machine to xen 
> virtual machine and it runs great. Now, I am working on to convert 
> this full virt machine to para virt .
>
> Under my domU i have installed kernel-xen (since it is needed ) , and 
> edited my grub menu to use the installed kernel. 
> [snip]
> Red Hat nash version 5.1.19.6 <http://5.1.19.6> starting
>   Reading all physical volumes.  This may take a while...
>   No volume groups found
>   Volume group "VolGroup00" not found
> mount: could not find filesystem ''/dev/root''
> setuproot: moving /dev failed: No such file or directory
> setuproot: error mounting /proc: No such file or directory
> setuproot: error mounting /sys: No such file or directory
> switchroot: mount failed: No such file or directory
> Kernel panic - not syncing: Attempted to kill init!
> ---
>
I think you''re missing the xenblk driver.   Try editing 
/etc/modprobe.conf to look like this:

    alias eth0 xennet
    alias scsi_hostadapter xenblk

and then

    mkinitrd -f /boot/initrd-2.6.18-92.1.17.el5xen.img 2.6.18-92.1.17.el5xen

jch

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On Mon, Nov 10, 2008 at 4:24 AM, John Haxby <john.haxby@oracle.com> wrote:
> Paras pradhan wrote:
>
>> virt-p2v was able to convert my centOS 5.2 physical machine to xen
virtual
>> machine and it runs great. Now, I am working on to convert this full
virt
>> machine to para virt .
>>
>> Under my domU i have installed kernel-xen (since it is needed ) , and
>> edited my grub menu to use the installed kernel. [snip]
>> Red Hat nash version 5.1.19.6 <http://5.1.19.6> starting
>>  Reading all physical volumes.  This may take a while...
>>  No volume groups found
>>  Volume group "VolGroup00" not found
>> mount: could not find filesystem ''/dev/root''
>> setuproot: moving /dev failed: No such file or directory
>> setuproot: error mounting /proc: No such file or directory
>> setuproot: error mounting /sys: No such file or directory
>> switchroot: mount failed: No such file or directory
>> Kernel panic - not syncing: Attempted to kill init!
>> ---
>>
>>  I think you''re missing the xenblk driver.   Try editing
> /etc/modprobe.conf to look like this:
>
>   alias eth0 xennet
>   alias scsi_hostadapter xenblk
>
> and then
>
>   mkinitrd -f /boot/initrd-2.6.18-92.1.17.el5xen.img 2.6.18-92.1.17.el5xen
>
> jch


Thanks !. It worked....


Paras.


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