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[DeadSun <mwjpiero@xxxxxxxxx>]

Hi,Adrian

Thanks for your help.

Do I need set some flags in nova.conf?
in my nova.conf ,I set
*--live_migration_uri=qemu+ssh://%s/system*

and I have tried it but error log show

*(nova.compute.manager): TRACE:
2011-11-01 16:55:59,136 DEBUG nova.rpc [-] Making asynchronous cast on
compute.node1-test... from (pid=6815) cast
/home/openstack/nova/nova/rpc/impl_kombu.py:746
2011-11-01 16:55:59,140 ERROR nova.rpc [-] Exception during message handling
(nova.rpc): TRACE: Traceback (most recent call last):
(nova.rpc): TRACE: File "/home/openstack/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 "/home/openstack/nova/nova/compute/manager.py",
line 1615, in live_migration
(nova.rpc): TRACE: raise exc
(nova.rpc): TRACE: RemoteError: Remote error: None None
(nova.rpc): TRACE: None.
(nova.rpc): TRACE:*

and in dest node, compute.log show

*2011-11-01 16:58:44,035 DEBUG nova.utils [-] Attempting to grab semaphore
"0ade7c2cf97f75d009975f4d720d1fa6c19f4897_sm" for method
"call_if_not_exists"... from (pid=17799) inner
/home/openstack/nova/nova/utils.py:717
2011-11-01 16:58:44,043 ERROR nova.rpc [-] Exception during message handling
(nova.rpc): TRACE: Traceback (most recent call last):
(nova.rpc): TRACE: File "/home/openstack/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 "/home/openstack/nova/nova/compute/manager.py",
line 1569, in pre_live_migration
(nova.rpc): TRACE: disk)
(nova.rpc): TRACE: File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 1803, in
pre_block_migration
(nova.rpc): TRACE: size=instance_ref['local_gb'])
(nova.rpc): TRACE: File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 804, in
_cache_image
(nova.rpc): TRACE: call_if_not_exists(base, fn, *args, **kwargs)
(nova.rpc): TRACE: File "/home/openstack/nova/nova/utils.py", line 730, in
inner
(nova.rpc): TRACE: retval = f(*args, **kwargs)
(nova.rpc): TRACE: File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 802, in
call_if_not_exists
(nova.rpc): TRACE: fn(target=base, *args, **kwargs)
(nova.rpc): TRACE: File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 816, in
_fetch_image
(nova.rpc): TRACE: images.fetch_to_raw(context, image_id, target, user_id,
project_id)
(nova.rpc): TRACE: File "/home/openstack/nova/nova/virt/images.py", line
52, in fetch_to_raw
(nova.rpc): TRACE: metadata = fetch(context, image_href, path_tmp, user_id,
project_id)
(nova.rpc): TRACE: File "/home/openstack/nova/nova/virt/images.py", line
46, in fetch
(nova.rpc): TRACE: metadata = image_service.get(context, image_id,
image_file)
(nova.rpc): TRACE: File "/home/openstack/nova/nova/image/glance.py", line
239, in get
(nova.rpc): TRACE: image_meta, image_chunks = client.get_image(image_id)
(nova.rpc): TRACE: File
"/usr/lib/python2.7/dist-packages/glance/client.py", line 83, in get_image
(nova.rpc): TRACE: res = self.do_request("GET", "/images/%s" % image_id)
(nova.rpc): TRACE: File
"/usr/lib/python2.7/dist-packages/glance/common/client.py", line 145, in
do_request
(nova.rpc): TRACE: method, action, body=body, headers=headers,
params=params)
(nova.rpc): TRACE: File
"/usr/lib/python2.7/dist-packages/glance/common/client.py", line 222, in
_do_request
(nova.rpc): TRACE: raise exception.NotAuthorized(res.read())
(nova.rpc): TRACE: NotAuthorized: 401 Unauthorized
(nova.rpc): TRACE:
(nova.rpc): TRACE: This server could not verify that you are authorized to
access the document you requested. Either you supplied the wrong
credentials (e.g., bad password), or your browser does not understand how
to supply the credentials required.
(nova.rpc): TRACE:
(nova.rpc): TRACE: Authentication required
(nova.rpc): TRACE:
2011-11-01 16:58:44,044 ERROR nova.rpc [-] Returning exception 401
Unauthorized

This server could not verify that you are authorized to access the document
you requested. Either you supplied the wrong credentials (e.g., bad
password), or your browser does not understand how to supply the
credentials required.

Authentication required to caller
2011-11-01 16:58:44,044 ERROR nova.rpc [-] ['Traceback (most recent call
last):\n', ' File "/home/openstack/nova/nova/rpc/impl_kombu.py", line 620,
in _process_data\n rval = node_func(context=ctxt, **node_args)\n', ' File
"/home/openstack/nova/nova/compute/manager.py", line 1569, in
pre_live_migration\n disk)\n', ' File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 1803, in
pre_block_migration\n size=instance_ref[\'local_gb\'])\n', ' File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 804, in
_cache_image\n call_if_not_exists(base, fn, *args, **kwargs)\n', ' File
"/home/openstack/nova/nova/utils.py", line 730, in inner\n retval =
f(*args, **kwargs)\n', ' File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 802, in
call_if_not_exists\n fn(target=base, *args, **kwargs)\n', ' File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 816, in
_fetch_image\n images.fetch_to_raw(context, image_id, target, user_id,
project_id)\n', ' File "/home/openstack/nova/nova/virt/images.py", line 52,
in fetch_to_raw\n metadata = fetch(context, image_href, path_tmp, user_id,
project_id)\n', ' File "/home/openstack/nova/nova/virt/images.py", line 46,
in fetch\n metadata = image_service.get(context, image_id, image_file)\n',
' File "/home/openstack/nova/nova/image/glance.py", line 239, in get\n
image_meta, image_chunks = client.get_image(image_id)\n', ' File
"/usr/lib/python2.7/dist-packages/glance/client.py", line 83, in
get_image\n res = self.do_request("GET", "/images/%s" % image_id)\n', '
File "/usr/lib/python2.7/dist-packages/glance/common/client.py", line 145,
in do_request\n method, action, body=body, headers=headers,
params=params)\n', ' File
"/usr/lib/python2.7/dist-packages/glance/common/client.py", line 222, in
_do_request\n raise exception.NotAuthorized(res.read())\n', 'NotAuthorized:
401 Unauthorized\n\nThis server could not verify that you are authorized to
access the document you requested. Either you supplied the wrong
credentials (e.g., bad password), or your browser does not understand how
to supply the credentials required.\n\n Authentication required \n']
2011-11-01 16:58:44,156 DEBUG nova.rpc [-] received {u'_context_roles': [],
u'_context_request_id': u'3fcbe6e7-b066-4c00-92df-8bac652ec870',
u'_context_read_deleted': False, u'args': {u'instance_id': 8},
u'_context_auth_token': None, u'_context_strategy': u'noauth',
u'_context_is_admin': True, u'_context_project_id': None,
u'_context_timestamp': u'2011-11-01T08:59:35.474878', u'_context_user_id':
None, u'method': u'rollback_live_migration_at_destination',
u'_context_remote_address': None} from (pid=17799) __call__
/home/openstack/nova/nova/rpc/impl_kombu.py:600
2011-11-01 16:58:44,157 DEBUG nova.rpc [-] unpacked context: {'user_id':
None, 'roles': [], 'timestamp': u'2011-11-01T08:59:35.474878',
'auth_token': None, 'msg_id': None, 'remote_address': None, 'strategy':
u'noauth', 'is_admin': True, 'request_id':
u'3fcbe6e7-b066-4c00-92df-8bac652ec870', 'project_id': None,
'read_deleted': False} from (pid=17799) _unpack_context
/home/openstack/nova/nova/rpc/impl_kombu.py:646
2011-11-01 16:58:44,216 DEBUG nova.rpc [-] Making asynchronous call on
network ... from (pid=17799) multicall
/home/openstack/nova/nova/rpc/impl_kombu.py:721
2011-11-01 16:58:44,217 DEBUG nova.rpc [-] MSG_ID is
f8a4567e4b3f45679a730f3f6c357e23 from (pid=17799) multicall
/home/openstack/nova/nova/rpc/impl_kombu.py:724
2011-11-01 16:58:44,479 ERROR nova.rpc [-] Exception during message handling
(nova.rpc): TRACE: Traceback (most recent call last):
(nova.rpc): TRACE: File "/home/openstack/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 "/home/openstack/nova/nova/compute/manager.py",
line 1774, in rollback_live_migration_at_destination
(nova.rpc): TRACE: block_device_info, True)
(nova.rpc): TRACE: File
"/home/openstack/nova/nova/virt/libvirt/connection.py", line 311, in destroy
(nova.rpc): TRACE: virt_dom.undefine()
(nova.rpc): TRACE: AttributeError: 'NoneType' object has no attribute
'undefine'
(nova.rpc): TRACE:*

2011/11/1 <Adrian_F_Smith@xxxxxxxx>

> There isn't really any block migration specific configuration. So long as
> your multi-node nova installation is working you should be fine.
>
>
>
> The source and target nodes must have compatible CPU architectures and
> capabilities. Nova-compute on the target node will need access to the VM’s
> base image (i.e. on Glance if that’s what you’re using) so that it can
> fetch it during the migration.
>
>
>
> The command to do the migration is,
>
>
>
> $ nova-manage vm block_migration <ec2 instance id> <destination node>
>
>
>
> Adrian
>
>
>
>
>
> *From:* openstack-bounces+adrian_f_smith=dell.com@xxxxxxxxxxxxxxxxxxx[mailto:
> openstack-bounces+adrian_f_smith=dell.com@xxxxxxxxxxxxxxxxxxx] *On Behalf
> Of *DeadSun
> *Sent:* Tuesday, November 01, 2011 9:07 AM
> *To:* openstack@xxxxxxxxxxxxxxxxxxx
> *Subject:* [Openstack] how to configure nova block_migration
>
>
>
> because I have no shared storage, I want to know how nova use kvm block
> migration and how to configure it
>
> --
> 非淡薄无以明志，非宁静无以致远
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack
> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
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>


-- 
非淡薄无以明志，非宁静无以致远