Re: [Xen-users] imaging an existing system?

[Thomas Halinka <lists@xxxxxxxxx>]

Hi Miles,

Am Montag, den 16.02.2009, 16:47 -0500 schrieb Miles Fidelman:
> Hi,
> 
> I have an old server, running Debian Sarge.  I'm getting ready to 
> migrate to a new machine - more horsepower, newer version of Debian, etc.

Good plan ;-)

> As an interim step to migrating all of my production stuff, it sure 
> would be nice to generate a snapshot of the current system, turn it into 
> an image file, and get it running on the new box, as a VM.
> 
> Any suggestions as to procedures and tools for imaging an existing system?

First boot up your old-system into rescue-mode (use knoppix, grml,
whatever) to get a consitent system....


Steps in dom0:
#################

create an empty image file on dom0

   dd if=/dev/zero of=/path/to/images/sarge-disk bs=1M count=5000 

---> creates a 5GB-Disk

Format it

   mkfs.ext3 /path/to/images/sarge-disk 


Mount it

   mount -o loop /path/to/images/sarge-disk /mnt


Copy your data into it

   rsync -avzH --numeric-ids -e ssh root@old-system:/* /mnt/

umount && create domu.cfg

   umount /mnt && cd /etc/xen && cp $extisting-domu.cfg sarge.cfg
   vim sarge.cfg


> 
> Thanks much,
> 
> Miles Fidelman


hth,

Thomas


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