Xen users - Jul 2009 - Migrating domU : image file based to LVM partition

Hey *

I''ve some SL47 PV domU''s running on CentOS5.3 running  Xen
version
3.1.2-128.1.6.el5, created with virt-install.
These domU''s are image file based, with only one partition inside (/). 
They are already configured for my purposes and its time to dump these 
domU''s to partitions (LVM partitions already in place) for performance 
reasons.
And, I''m having problems doing it.

1 - How do I dump the content of a domU to a LVM partition?
     Did the following:
     kpartx -va domu.img
     mount /dev/mapper/loop0p1 /mnt/loop
     mount /dev/vg0/domu  /mnt/domu
     cp -ax  /mnt/loop /mnt/domu
     umount /mnt/domu; umount /mnt/loop;
     kpartx -vd domu.img

A quick look inside /mnt/domu ... and all the original contents of the 
.img disk file seems to be there.
Is there a more direct way of doing such procedure?

2 - After step 1) I edited the xen config file (see below) as well as 
the /etc/fstab and /boot/grub/menu.lst accordingly.
But get the following error:

xm create bdii-enmr.xen -c
	Using config file "./bdii-enmr.xen".
	No handlers could be found for logger "xend"
	Error: Disk isn''t accessible
	Usage: xm create <ConfigFile> [options] [vars]
	[... snip ...]



name = "domu"
maxmem = 512
memory = 512
vcpus = 1
bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vfb = [  ]
# Previously :
#disk = [ "tap:aio:/data/enmr/domU/bdii/bdii-enmr.img,xvda,w",
#         "phy:vg0/domu.bdii_enmr.swap,/dev/xvda2,w"
#       ]
#
# Currently :
disk = [ "phys:vg0/domu.main,xvda1,w",
            "phy:vg0/domu.swap,xvda2,w"
          ]
vif = [ "mac=00:16:3E:0F:51:53,bridge=xenbr0" ]


A couple of months ago I had some domu''s LVM based created by 
virt-install. And I was not having problems booting up the VM''s

Cheers,
N.

P.S.Did the test, because I''m not receiving my own e-mails.
Went to the xen-users mailing list membership configuration, and all 
seems ok.


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On Sat, Jul 4, 2009 at 6:18 AM, Nuno Loureiro Ferreira<nunolf@gmail.com>
wrote:
> # Currently :
> disk = [ "phys:vg0/domu.main,xvda1,w",
Extra "s"?
Try phy:/dev/vg0/domu.main,xvda1,w

-- 
Fajar

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Hi Fajar

I feel so stupid right now.
Thanks, as usual.
N.
Fajar A. Nugraha wrote:
> On Sat, Jul 4, 2009 at 6:18 AM, Nuno Loureiro
Ferreira<nunolf@gmail.com> wrote:
>   
>> # Currently :
>> disk = [ "phys:vg0/domu.main,xvda1,w",
>>     
>
> Extra "s"?
> Try phy:/dev/vg0/domu.main,xvda1,w
>
>   

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