[Openstack] Migrate instances/tenants between clouds

Martinx - ジェームズ thiagocmartinsc at gmail.com
Thu Oct 24 19:07:48 UTC 2013


You can try this to copy your Cinder Volumes (if LVM based):

* At your new Cinder Volume server (new cinder-volumes LVM), run:

root at cinder-volumes-server-1~# *nc -l 7000 | dd
of=/dev/mapper/cinder-volumes-volume_id bs=32768*

* From old cinder volume host (where your cinder-volume LVM resides):

root at cinder-volumes-old-server-1~# *dd
if=/dev/mapper/cinder-volumes-volume_id bs=32768 | nc
cinder-volumes-server-1 7000*

Source: http://toast.djw.org.uk/tarpipe.html

If they are located within the same subnet/mask (netcat traffic), this will
run pretty fast!


On 24 October 2013 12:53, Alexander Stellwag <openstack at stellwag.net> wrote:

> Hi stackers,
> we're looking for a tool / script / blueprint to migrate instances or
> even complete tenants between multiple installations of OpenStack
> (possibly running different versions).
> I searched around the net but didn't find anything appropriate. Is any
> of you aware of such a tool?
> The current use-case is a migration from a folsom/nova-network based
> installation into our new havana/neutron based cloud. It is not
> necessary to migrate instances and volumes online but it should work at
> least semi-automatically to make it usable in large deployments.
> Any hints would be greatly appreciated.
> Cheers,
> Alex
> --
> Alexander Stellwag
> Deutsche Telekom AG Products & Innovation
> Infrastructure Design
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