** Also affects: nova/icehouse
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1357599
Title:
race condition with neutron in nova migrate code
Status in OpenStack Compute (Nova):
Fix Committed
Status in OpenStack Compute (nova) icehouse series:
New
Bug description:
The tempest test that does a resize on the instance from time to time
fails with a neutron virtual interface timeout error. The reason why
this is occurring is because resize_instance() calls:
disk_info = self.driver.migrate_disk_and_power_off(
context, instance, migration.dest_host,
instance_type, network_info,
block_device_info)
which calls destory() which unplugs the vifs(). Then,
self.driver.finish_migration(context, migration, instance,
disk_info,
network_info,
image, resize_instance,
block_device_info, power_on)
is called which expects a vif_plugged event. Since this happens on the
same host the neutron agent is able to detect that the vif was
unplugged then plugged because it happens so fast. To fix this we
should check if we are migrating to the same host if we are we should
not expect to get an event.
8d1] Setting instance vm_state to ERROR
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] Traceback (most recent call last):
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] File
"/opt/stack/new/nova/nova/compute/manager.py", line 3714, in finish_resize
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] disk_info, image)
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] File
"/opt/stack/new/nova/nova/compute/manager.py", line 3682, in _finish_resize
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] old_instance_type, sys_meta)
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] File
"/opt/stack/new/nova/nova/openstack/common/excutils.py", line 82, in __exit__
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] six.reraise(self.type_, self.value,
self.tb)
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] File
"/opt/stack/new/nova/nova/compute/manager.py", line 3677, in _finish_resize
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] block_device_info, power_on)
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] File
"/opt/stack/new/nova/nova/virt/libvirt/driver.py", line 5302, in
finish_migration
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] block_device_info, power_on)
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] File
"/opt/stack/new/nova/nova/virt/libvirt/driver.py", line 3792, in
_create_domain_and_network
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] raise
exception.VirtualInterfaceCreateException()
2014-08-14 00:03:58.010 1276 TRACE nova.compute.manager [instance:
dca468e4-d26f-4ae2-a522-7d02ef7c98d1] VirtualInterfaceCreateException: Virtual
Interface creation failed
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