Nova fails all live migrations on dedicated interface due to conversion of string to unicode (in Python 2.7).
My environment:
* nova trunk, commit 40f9b0ad16d3a5fae184bbe6d4a49cf792967089
* QEMU 2.6
* Libvirt 1.3.4
1. Set live_migration_inbound_addr to IP address of existing interface
2. Make sure that live_migration_tunnelled is set to False
3. Restart nova-compute
4. Try to live migrate any instance
5. Outcome:
2016-11-02 12:26:04.272 DEBUG nova.virt.libvirt.driver [req-f3cc94e2-4b45-4236-8d1b-888343ae6885 admin demo] [instance: 09b7c15c-7a5c-4e86-8c27-96d2edc5094c] Migration operation thread notification from (pid=8533) thread_finished /opt/stack/nova/nova/virt/libvirt/driver.py:6325
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 457, in fire_timers
timer()
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 58, in __call__
cb(*args, **kw)
File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 168, in _do_send
waiter.switch(result)
File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
result = function(*args, **kwargs)
File "/opt/stack/nova/nova/utils.py", line 1066, in context_wrapper
return func(*args, **kwargs)
File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 5926, in _live_migration_operation
instance=instance)
File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
self.force_reraise()
File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
six.reraise(self.type_, self.value, self.tb)
File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 5922, in _live_migration_operation
bandwidth=CONF.libvirt.live_migration_bandwidth)
File "/opt/stack/nova/nova/virt/libvirt/guest.py", line 571, in migrate
destination, params=params, flags=flags)
File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 186, in doit
result = proxy_call(self._autowrap, f, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 144, in proxy_call
rv = execute(f, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 125, in execute
six.reraise(c, e, tb)
File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 83, in tworker
rv = meth(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/libvirt.py", line 1915, in migrateToURI3
ret = libvirtmod.virDomainMigrateToURI3(self._o, dconnuri, params, flags)
TypeError: Unknown type of "migrate_uri" field
This happens to me everytime when trying to live migrate any VM over dedicated interface using nova trunk.
Fix proposed to branch: master
Review: https:/