nova migrate fails

gistfile1.txt

# from /var/log/nova/nova-compute.log on the compute node

2014-08-27 20:31:08.039 27246 INFO nova.compute.resource_tracker [-] Compute_service record updated for 573962-compute14.qe1.iad3.rackspace.com:573962-compute14.qe1.iad3.rackspace.com
2014-08-27 20:31:52.088 27246 AUDIT nova.compute.manager [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Starting instance...
2014-08-27 20:31:52.184 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Attempting claim: memory 2048 MB, disk 20 GB, VCPUs 1
2014-08-27 20:31:52.184 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Total memory: 128766 MB, used: 512.00 MB
2014-08-27 20:31:52.185 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] memory limit: 193149.00 MB, free: 192637.00 MB
2014-08-27 20:31:52.186 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Total disk: 2189 GB, used: 0.00 GB
2014-08-27 20:31:52.186 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] disk limit not specified, defaulting to unlimited
2014-08-27 20:31:52.187 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Total CPUs: 32 VCPUs, used: 0.00 VCPUs
2014-08-27 20:31:52.187 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] CPUs limit not specified, defaulting to unlimited
2014-08-27 20:31:52.188 27246 AUDIT nova.compute.claims [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Claim successful
2014-08-27 20:31:52.403 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:52.437 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:52.472 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:52.630 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:52.711 27246 INFO nova.virt.libvirt.driver [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Creating image
2014-08-27 20:31:52.895 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:52.939 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:52.990 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:53.028 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:31:55.362 27246 INFO nova.virt.libvirt.driver [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Using config drive
2014-08-27 20:31:55.465 27246 INFO nova.virt.libvirt.driver [req-9d3c9b5a-3d67-4982-a776-be10fa3d6957 595661a72d704ac4a1903d3877d18440 5ddbef88337a4e60ab0a2cd560868fe9] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Creating config drive at /var/lib/nova/instances/bf107a04-01e6-4eb3-b7d6-d535c0198c23/disk.config
2014-08-27 20:31:58.934 27246 INFO nova.compute.manager [-] Lifecycle event 0 on VM bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:31:59.057 27246 INFO nova.compute.manager [-] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] During sync_power_state the instance has a pending task (spawning). Skip.
2014-08-27 20:31:59.058 27246 INFO nova.compute.manager [-] Lifecycle event 2 on VM bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:31:59.181 27246 INFO nova.compute.manager [-] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] During sync_power_state the instance has a pending task (spawning). Skip.
2014-08-27 20:32:06.458 27246 INFO nova.compute.manager [-] Lifecycle event 3 on VM bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:32:06.469 27246 INFO nova.virt.libvirt.driver [-] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Instance spawned successfully.
2014-08-27 20:32:06.568 27246 INFO nova.compute.manager [-] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] During sync_power_state the instance has a pending task (spawning). Skip.
2014-08-27 20:32:06.568 27246 INFO nova.compute.manager [-] Lifecycle event 3 on VM bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:32:07.702 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:07.853 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:07.951 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:07.985 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:08.004 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:08.037 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:08.105 27246 AUDIT nova.compute.resource_tracker [-] Auditing locally available compute resources
2014-08-27 20:32:08.766 27246 AUDIT nova.compute.resource_tracker [-] Updating from migration bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:32:08.766 27246 AUDIT nova.compute.resource_tracker [-] Free ram (MB): 126206
2014-08-27 20:32:08.767 27246 AUDIT nova.compute.resource_tracker [-] Free disk (GB): 2169
2014-08-27 20:32:08.767 27246 AUDIT nova.compute.resource_tracker [-] Free VCPUS: 31
2014-08-27 20:32:08.801 27246 INFO nova.compute.resource_tracker [-] Compute_service record updated for 573962-compute14.qe1.iad3.rackspace.com:573962-compute14.qe1.iad3.rackspace.com
2014-08-27 20:32:08.936 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:09.045 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:09.083 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:09.104 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:09.140 27246 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.96.10
2014-08-27 20:32:10.054 27246 ERROR nova.compute.manager [req-601b6d25-b4db-473a-a0ff-b82f48ee2202 8f6d227f62c649aa8200765cf4fa6c2a c40106fd0ed546d790dec06951c9cf46] [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Setting instance vm_state to ERROR
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Traceback (most recent call last):
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 5568, in _error_out_instance_on_exception
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]     yield
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 3459, in resize_instance
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]     block_device_info)
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]   File "/usr/local/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4939, in migrate_disk_and_power_off
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]     utils.execute('ssh', dest, 'mkdir', '-p', inst_base)
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]   File "/usr/local/lib/python2.7/dist-packages/nova/utils.py", line 165, in execute
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]     return processutils.execute(*cmd, **kwargs)
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]   File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/processutils.py", line 193, in execute
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]     cmd=' '.join(cmd))
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] ProcessExecutionError: Unexpected error while running command.
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Command: ssh 10.17.255.142 mkdir -p /var/lib/nova/instances/bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Exit code: 255
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Stdout: ''
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23] Stderr: 'Host key verification failed.\r\n'
2014-08-27 20:32:10.054 27246 TRACE nova.compute.manager [instance: bf107a04-01e6-4eb3-b7d6-d535c0198c23]
2014-08-27 20:32:10.328 27246 ERROR oslo.messaging.rpc.dispatcher [-] Exception during message handling: Unexpected error while running command.
Command: ssh 10.17.255.142 mkdir -p /var/lib/nova/instances/bf107a04-01e6-4eb3-b7d6-d535c0198c23
Exit code: 255
Stdout: ''
Stderr: 'Host key verification failed.\r\n'
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/exception.py", line 88, in wrapped
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     payload)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/exception.py", line 71, in wrapped
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 274, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     pass
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 260, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 327, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     function(self, context, *args, **kwargs)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 248, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     migration.instance_uuid, exc_info=True)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 235, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 303, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     e, sys.exc_info())
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 290, in decorated_function
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 3459, in resize_instance
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     block_device_info)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4939, in migrate_disk_and_power_off
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     utils.execute('ssh', dest, 'mkdir', '-p', inst_base)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/utils.py", line 165, in execute
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     return processutils.execute(*cmd, **kwargs)
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/processutils.py", line 193, in execute
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher     cmd=' '.join(cmd))
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher ProcessExecutionError: Unexpected error while running command.
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher Command: ssh 10.17.255.142 mkdir -p /var/lib/nova/instances/bf107a04-01e6-4eb3-b7d6-d535c0198c23
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher Exit code: 255
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher Stdout: ''
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher Stderr: 'Host key verification failed.\r\n'
2014-08-27 20:32:10.328 27246 TRACE oslo.messaging.rpc.dispatcher
2014-08-27 20:32:10.332 27246 ERROR oslo.messaging._drivers.common [-] Returning exception Unexpected error while running command.
Command: ssh 10.17.255.142 mkdir -p /var/lib/nova/instances/bf107a04-01e6-4eb3-b7d6-d535c0198c23
Exit code: 255
Stdout: ''
Stderr: 'Host key verification failed.\r\n' to caller
2014-08-27 20:32:10.332 27246 ERROR oslo.messaging._drivers.common [-] ['Traceback (most recent call last):\n', '  File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply\n    incoming.message))\n', '  File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch\n    return self._do_dispatch(endpoint, method, ctxt, args)\n', '  File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch\n    result = getattr(endpoint, method)(ctxt, **new_args)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/exception.py", line 88, in wrapped\n    payload)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/exception.py", line 71, in wrapped\n    return f(self, context, *args, **kw)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 274, in decorated_function\n    pass\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 260, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 327, in decorated_function\n    function(self, context, *args, **kwargs)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 248, in decorated_function\n    migration.instance_uuid, exc_info=True)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 235, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 303, in decorated_function\n    e, sys.exc_info())\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 290, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/compute/manager.py", line 3459, in resize_instance\n    block_device_info)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4939, in migrate_disk_and_power_off\n    utils.execute(\'ssh\', dest, \'mkdir\', \'-p\', inst_base)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/utils.py", line 165, in execute\n    return processutils.execute(*cmd, **kwargs)\n', '  File "/usr/local/lib/python2.7/dist-packages/nova/openstack/common/processutils.py", line 193, in execute\n    cmd=\' \'.join(cmd))\n', "ProcessExecutionError: Unexpected error while running command.\nCommand: ssh 10.17.255.142 mkdir -p /var/lib/nova/instances/bf107a04-01e6-4eb3-b7d6-d535c0198c23\nExit code: 255\nStdout: ''\nStderr: 'Host key verification failed.\\r\\n'\n"]