Re: [Xen-users] Cloning VM from Xen

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Benjamin Knoth wrote:

> i created some virtual machines on SLES 10 with Xen.
> Now i would like to use Xen on SLES 11.
> My harddisks from all vm are lvm.
> Is it possible to clone my existing vm to my new server which runs with
> SLES 11?
Short answer - copy the LVs and guest config from one server to the other.

Longer answer :
Create each LV on the new server, copy the contents across from the 
old one. If the LV is identical in size then you can probably just do 
a bytewise copy of the LV. Alternatively, you can mount the LV on the 
DomU and copy all the files across using your favourite tool.
My personal preference is :
mount LV on /mnt on each Dom0
rsync -avH --numeric-ids /mnt/ root@xxxxxxxxxxxxxxxxxxxxxxxxx:/mnt/
scp /etc/xen/guest_cofig_file root@xxxxxxxxxxxxxxxxxxxxxxxxx:/etc/xen
unmount /mnt on each machine
repeat above for each LV

startup guest on new server

Obviously you can take this opportunity to resize volumes, and even 
re-arrange then (eg you can split a single LV on the old server and 
make it separate / and /var on the new one - don't forget to alter 
both the guest config and the guest's /etc/fstab.
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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