Hi, I posted two messages to ask.ubuntu about my problem without solution: https://ask.openstack.org/en/question/12033/live-migration-with-qemu-is-possible/ https://ask.openstack.org/en/question/12134/live-migration-with-qemu-is-really-possible/ and I reported the problem in #openstack. Until now, I can't find a solution. I'm using Openstack Havana in CentOS. I've installed 1 controller and 2 compute nodes, with NFS. Controller folder is shared by the compute nodes (folder /var/lib/nova/instances). All nodes are accessible among them without password. I can perform a migration in the dashboard. In the shell, I exaustivelly tried live migration without sucess. I'm setting /etc/nova/nova.conf and uncomment all live-migration options. I'm trying the following in the shell: # nova live-migration MY_UUID_VM_INSTANCE my_host_destine But silenty this command not works. Finally, my log of /var/log/nova-all.log: --- <0>Feb 17 20:19:43 node-4 ¿<179>nova-nova.openstack.common.rpc.amqp ERROR: Exception during message handling Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py", line 461, in _process_data **args) File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/dispatcher.py", line 172, in dispatch result = getattr(proxyobj, method)(ctxt, **kwargs) File "/usr/lib/python2.6/site-packages/nova/exception.py", line 90, in wrapped payload) File "/usr/lib/python2.6/site-packages/nova/exception.py", line 73, in wrapped return f(self, context, *args, **kw) File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 4016, in pre_live_migration migrate_data) File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 4162, in pre_live_migration self._create_images_and_backing(context, instance, instance_dir, UnboundLocalError: local variable 'instance_dir' referenced before assignment <0>Feb 17 20:20:16 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Auditing locally available compute resources <0>Feb 17 20:20:16 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Free ram (MB): 1494 <0>Feb 17 20:20:16 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Free disk (GB): 14 <0>Feb 17 20:20:16 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Free VCPUS: 2 <0>Feb 17 20:20:16 node-4 ¿<182>nova-nova.compute.resource_tracker INFO: Compute_service record updated for node-4.domain.tld:node-4.domain.tld <0>Feb 17 20:21:15 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Auditing locally available compute resources <0>Feb 17 20:21:15 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Free ram (MB): 1494 <0>Feb 17 20:21:15 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Free disk (GB): 14 <0>Feb 17 20:21:15 node-4 ¿<180>nova-nova.compute.resource_tracker AUDIT: Free VCPUS: 2 <0>Feb 17 20:21:15 node-4 ¿<182>nova-nova.compute.resource_tracker INFO: Compute_service record updated for node-4.domain.tld:node-4.domain.tld --- This is a bug? Someone could help me? I should use KVM instead qemu? Any help is usefull. Thanks in advance.

When	Who	Action	New State
2014-02-17	Lucio Agostinho	Comment	Open
2014-08-18	徐志权	Answer	Answered
2016-01-20	Qichen Hao	Comment	Answered

OpenStack Compute (nova)

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