Yes Justin that does help. I need one more information. When I used virt-manager had installed the guest OS in and LVM. The process of creating a ext4 and swap in that LVM was taken care by virt-manager. How does virt-manager do that? Suppose I take an rsync backup of the filesystem on LVM.(Swap wont be backed up in fact it is not needed) Then on the other server if I want to use this rsync backup i.e. want to boot from the os whose backup was taken is how is that done? Does this also comes under migration? How does virt-manager handles the process of creating a file system and swap co existing in same LVM.Is it possible to reproduce this manually then how can I do that? <div class="gmail_quote">On Mon, Oct 4, 2010 at 11:05 AM, Justin Clift <<a href="mailto:jclift@redhat.com">jclift@redhat.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div></div><div class="h5">On 10/04/2010 04:24 PM, Tapas Mishra wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> I am searching for some information. I used virt-manager to create 4 guest OS on KVM. Let us call this server A I am running another server where KVM is running call this server B. Is is some how possible guest running on server A can be transferred to B so that I can run it and do not have to do any extra work. </blockquote> </div></div> Hi Tapas, You're looking for what's called "Migration", where you transfer guests between hosts. This works quite well, *but* you have to set things up for it before hand. The guest image files need to be running in a shared storage location, that both "server A" and "server B" have access to. For example, using NFS or iSCSI. As you're using Ubuntu, the Ubuntu wiki may have info (I haven't checked), and the HowtoForge.com might be useful too: <a href="http://howtoforge.com/howtos/virtualization/kvm" target="_blank">http://howtoforge.com/howtos/virtualization/kvm</a> As a thought for the future, I'm presently creating documentation for areas like this that need to be done better, but haven't gotten up to the migration stuff yet. Does that help? Regards and best wishes, Justin Clift </blockquote></div>