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2013-07-01 02:59:18 -0600 commented question Why do compute nodes need to be in the same subnet for migration to work?

I believe this may be due to the fact that the IP of the VM needs to be the same during migration, otherwise it wouldn't be "live" in a network reachability sense.
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2013-06-12 06:53:40 -0600 asked a question Why do compute nodes need to be in the same subnet for migration to work?

Why do compute nodes need to be in the same IP subnet for live or block migration to work?

As transport is TCP/IP I can't see why it cannot be routed, can anyone shed some light on this for me?

Thank you.
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2013-06-10 07:52:34 -0600 answered a question Instance marked as deleted but still present on host?

Hello,

I found the following option for nova.conf

 running_deleted_instance_action=log

(StrOpt) Action to take if a running deleted instance is detected.Valid options are 'noop', 'log' and 'reap'. Set to 'noop' to disable.

By setting it to "reap" the instances are deleted automatically.
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2013-06-06 06:37:48 -0600 answered a question What is flat network ?

I believe flat networking refers to a single l2 network (e.g. a vlan) to which all vms are connected.
2013-06-06 05:10:04 -0600 asked a question Instance marked as deleted but still present on host?

I have deployed Openstack in a testing environment consisting of three hosts. One controller node and two compute nodes (using KVM).

At one point in my testing, I terminated all instances. However, for some reason nova-compute was not responding on the second compute node. The VM which was active on this node is now no longer present in Openstack, e.g. using:

nova-manage vm list
nova list --all-tenants

(no results)

I get the following in nova-compute.log from the second compute node:

 WARNING nova.compute.manager [-] [instance: a4705c75-96e5-42ba-8da6-d998d05fdda6] Detected instance with name label 'instance-0000002b' which is marked as DELETED but still present on host.

How do I force deletion of this instance?

Thank you very much in advance