[CentOS-virt] (KVM) How can I migrate VM in a non shared storage environment?
cjac at colliertech.org
Mon Jun 28 12:27:46 EDT 2010
If you do it often, you might consider listening for ssh connections on
a separate port and using tc to keep things from getting out of hand:
On Mon, 2010-06-28 at 09:17 -0700, Christopher Hunt wrote:
> +1 for dd + nc over ssh if necessary.
> This process can and probably will saturate your ethernet interface, so
> depending upon the amount of traffic the box pushes on the public
> interface the size of the partition and other factors, sometimes i add a
> crossover cable between unused interfaces on the 2 boxes and run the
> process over that interface, so it doesn't impact the running vms.
> On 6/24/2010 9:00 AM, centos-virt-request at centos.org wrote:
> > Message: 3
> > Date: Thu, 24 Jun 2010 10:52:57 -0400
> > From: Kelvin Edmison<kelvin at kindsight.net>
> > Subject: Re: [CentOS-virt] (KVM) How can I migrate VM in a non shared
> > storage environment?
> > To: Discussion about the virtualization on CentOS
> > <centos-virt at centos.org>
> > Message-ID:<C848E989.30D95%kelvin at kindsight.net>
> > Content-Type: text/plain; charset="US-ASCII"
> > On 24/06/10 7:17 AM, "Poh Yong Hwang"<yongsan at gmail.com> wrote:
> >> I have a server running CentOS 5.5 with KVM capabilities. I need to migrate
> >> all the VMs to another server with the exact same hardware specs. The problem
> >> is it is running on individual harddisks, not shared storage. What is the best
> >> way to migrate to minimise downtime?
> > I've had good success using dd and nc (netcat) to copy the contents of a
> > disk or disk image from one machine to another, and verifying the copy was
> > successful with a md5sum or sha1sum of both the original and copied disk.
> > Kelvin
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