Hey guys,
I'm playing aroung with the openstack api and I'm trying to change the
flavor of an instance. Thanks to the documentation I found the
necessary information to write the api call, which was done pretty
fast and easy. Sadly the api call has a secondary effect because after
the execution of the api call the instance changes into the error state.
I had a look into the nova-compute.log and this is what I found :
/root@nova-controller:/etc/nova# tail -n20
/var/log/nova/nova-compute.log /
/2012-05-02 14:47:18,887 DEBUG nova.rpc [-] unpacked context:
{'user_id': u'nodermatt', 'roles': [u'Admin'], 'timestamp':
u'2012-05-02T14:47:18.558838', 'auth_token':
u'be66c633-9a8d-47eb-a095-9b653375b138', 'msg_id': None,
'remote_address': u'192.168.7.106', 'strategy': u'keystone',
'is_admin': True, 'request_id':
u'744129f2-17d9-4756-a276-548ad6dfe975', 'project_id': u'2',
'read_deleted': False} from (pid=1496) _unpack_context
/var/lib/nova/nova/rpc/impl_kombu.py:646/
/2012-05-02 14:47:18,888 INFO nova.compute.manager
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2]
check_instance_lock: decorating: |<function prep_resize at 0x253ecf8>|/
/2012-05-02 14:47:18,889 INFO nova.compute.manager
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2]
check_instance_lock: arguments: |<nova.compute.manager.ComputeManager
object at 0x1d85e10>| |<nova.rpc.impl_kombu.RpcContext object at
0x3cc1c90>| |ff8f4521-fbc2-45e3-91ac-de395a7a1331|/
/2012-05-02 14:47:18,889 DEBUG nova.compute.manager
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2] instance
ff8f4521-fbc2-45e3-91ac-de395a7a1331: getting locked state from
(pid=1496) get_lock /var/lib/nova/nova/compute/manager.py:1199/
/2012-05-02 14:47:18,946 INFO nova.compute.manager
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2]
check_instance_lock: locked: |False|/
/2012-05-02 14:47:18,946 INFO nova.compute.manager
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2]
check_instance_lock: admin: |True|/
/2012-05-02 14:47:18,946 INFO nova.compute.manager
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2]
check_instance_lock: executing: |<function prep_resize at 0x253ecf8>|/
/2012-05-02 14:47:19,124 ERROR nova.rpc
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2] Exception during
message handling/
/(nova.rpc): TRACE: Traceback (most recent call last):/
/(nova.rpc): TRACE: File "/var/lib/nova/nova/rpc/impl_kombu.py",
line 620, in _process_data/
/(nova.rpc): TRACE: rval = node_func(context=ctxt, **node_args)/
/(nova.rpc): TRACE: File "/var/lib/nova/nova/exception.py", line
100, in wrapped/
/(nova.rpc): TRACE: return f(*args, **kw)/
/(nova.rpc): TRACE: File "/var/lib/nova/nova/compute/manager.py",
line 118, in decorated_function/
/(nova.rpc): TRACE: function(self, context, instance_id, *args,
**kwargs)/
/(nova.rpc): TRACE: File "/var/lib/nova/nova/compute/manager.py",
line 965, in prep_resize/
/(nova.rpc): TRACE: raise exception.Error(msg)/
/(nova.rpc): TRACE: Error: Migration error: destination same as source!/
/(nova.rpc): TRACE: /
/2012-05-02 14:48:00,294 INFO nova.compute.manager
[28207266-3917-4c91-b0d8-4afa36f7c018 None None] Updating host status/
//
Also a thread on the openstack forum and a bug on launchpad raised my
curiosity.
Forum thread : http://forums.openstack.org/viewtopic.php?f=10&t=693
Launchpad: https://lists.launchpad.net/openstack/msg05540.html
For the record here is the code:
/curl -v -H "X-Auth-Token:4963437d-0a6a-4302-a4ff-f3be191fbc1d"
http://192.168.7.211:8774/v1.1/2/servers/3/action -d '{"resize" :
{"flavorRef" : "2"}}' -H 'Content-type:application/json' | python -m
json.tool/
The machine, on which I am working, is a single node stackops deployment.
Does someone has an idea what may be the cause of the error?
Have a good day,
Nicolas
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