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You must not have allow_resize_to_same_host set in nova.conf.<br>
<br>
On 5/2/2012 11:02 AM, Nicolas Odermatt wrote:
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<p class="MsoNormal">Hey guys,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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. <span
lang="FR-CH">Sadly the api call has a secondary effect
because after the execution of the api call the instance
changes into the error state.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CH"><o:p> </o:p></span></p>
<p class="MsoNormal">I had a look into the nova-compute.log and
this is what I found :<o:p></o:p></p>
<p class="MsoNormal"><i><span lang="FR-CH">root@nova-controller:/etc/nova#
tail -n20 /var/log/nova/nova-compute.log <o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">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<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">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>|<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">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|<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">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<o:p></o:p></span></i></p>
<p class="MsoNormal"><i>2012-05-02 14:47:18,946 INFO
nova.compute.manager [744129f2-17d9-4756-a276-548ad6dfe975
nodermatt 2] check_instance_lock: locked: |False|<o:p></o:p></i></p>
<p class="MsoNormal"><i>2012-05-02 14:47:18,946 INFO
nova.compute.manager [744129f2-17d9-4756-a276-548ad6dfe975
nodermatt 2] check_instance_lock: admin: |True|<o:p></o:p></i></p>
<p class="MsoNormal"><i>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>|<o:p></o:p></i></p>
<p class="MsoNormal"><i>2012-05-02 14:47:19,124 ERROR nova.rpc
[744129f2-17d9-4756-a276-548ad6dfe975 nodermatt 2] Exception
during message handling<o:p></o:p></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc): TRACE:
Traceback (most recent call last):<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc): TRACE:
File "/var/lib/nova/nova/rpc/impl_kombu.py", line 620, in
_process_data<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc): TRACE:
rval = node_func(context=ctxt, **node_args)<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc): TRACE:
File "/var/lib/nova/nova/exception.py", line 100, in
wrapped<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc):
TRACE: return f(*args, **kw)<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc): TRACE:
File "/var/lib/nova/nova/compute/manager.py", line 118, in
decorated_function<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc):
TRACE: function(self, context, instance_id, *args,
**kwargs)<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc): TRACE:
File "/var/lib/nova/nova/compute/manager.py", line 965, in
prep_resize<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="FR-CH">(nova.rpc):
TRACE: raise exception.Error(msg)<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="color:red" lang="FR-CH">(nova.rpc):
TRACE: Error: Migration error: destination same as source!<o:p></o:p></span></i></p>
<p class="MsoNormal"><i>(nova.rpc): TRACE: <o:p></o:p></i></p>
<p class="MsoNormal"><i>2012-05-02 14:48:00,294 INFO
nova.compute.manager [28207266-3917-4c91-b0d8-4afa36f7c018
None None] Updating host status<o:p></o:p></i></p>
<p class="MsoNormal"><i><o:p> </o:p></i></p>
<p class="MsoNormal"><span lang="FR-CH">Also a thread on the
openstack forum and a bug on launchpad raised my curiosity.<o:p></o:p></span></p>
<p class="MsoNormal">Forum thread :
<a class="moz-txt-link-freetext" href="http://forums.openstack.org/viewtopic.php?f=10&t=693">http://forums.openstack.org/viewtopic.php?f=10&t=693</a><o:p></o:p></p>
<p class="MsoNormal">Launchpad: <a moz-do-not-send="true"
href="https://lists.launchpad.net/openstack/msg05540.html">https://lists.launchpad.net/openstack/msg05540.html</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For the record here is the code:<o:p></o:p></p>
<p class="MsoNormal"><i>curl -v -H
"X-Auth-Token:4963437d-0a6a-4302-a4ff-f3be191fbc1d<a class="moz-txt-link-rfc2396E" href="http://192.168.7.211:8774/v1.1/2/servers/3/action-d'{">"
http://192.168.7.211:8774/v1.1/2/servers/3/action -d
'{"</a>resize" : {"flavorRef" : "2"}}' -H
'Content-type:application/json' | python -m json.tool<o:p></o:p></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The machine, on which I am working, is a
single node stackops deployment.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does someone has an idea what may be the
cause of the error?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Have a good day,<o:p></o:p></p>
<p class="MsoNormal">Nicolas<o:p></o:p></p>
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