** Changed in: nova
Status: Fix Committed => Fix Released
** Changed in: nova
Milestone: None => kilo-2
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https://bugs.launchpad.net/bugs/1380934
Title:
failure rebuilding instance after resize-revert
Status in OpenStack Compute (Nova):
Fix Released
Bug description:
Short version:
Rebuilding instance after resize, vm become ERROR cause of
VirtualInterfaceCreateException.
Long version:
Reproduce:
master(0bbf6301b1886f501713df8c13a5f8b92c9b0c2c)
1. create instanse
2. do resize(succcess and active in destination host/status is VERIFY_RESIZE)
3. do resize-revert(success and active in source host/status is ACTIVE/port
is DOWN)
4. do rebuild
After timeout(value of vif_plugging_timeout), vm became ERROR cause of
VirtualInterfaceCreateException.
If you set vif_plugging_is_fatal to True, vm is removed.
Otherwise, if you set vif_plugging_is_fatal to False, vm become ACTIVE.
Cause:
When I do resize-revert, instance come back to source host, but host
information is set to destination node.
(host information is 'host' of ml2_port_bindings table of neutron DB)
This lead to mismatch of actual neutron port and DB information of port.
So this port become to DOWN.
Do rebuild in this situation, port don't become to ACTIVE, so results in
timuout.
Solution:
nova/compute/manager.py
def finish_revert_resize(self, context, instance, reservations, migration):
instance.system_metadata = sys_meta
instance.memory_mb = instance_type['memory_mb']
instance.vcpus = instance_type['vcpus']
instance.root_gb = instance_type['root_gb']
instance.ephemeral_gb = instance_type['ephemeral_gb']
instance.instance_type_id = instance_type['id']
instance.host = migration['source_compute']
instance.node = migration['source_node']
instance.save()
+migration.dest_compute = migration['source_compute']
+migration.save()
self.network_api.setup_networks_on_host(context, instance,
migration['source_compute'])
block_device_info = self._get_instance_block_device_info(
context, instance, refresh_conn_info=True)
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