Additional logs:

2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [-] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] Pre live migration failed at overcloud-novacompute-4.bdxworld.com: oslo_messaging.rpc.client.RemoteError: Remote error: VolumeDeviceNotFound Volume device not found at .
['Traceback (most recent call last):\n', '  File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming\n    res = self.dispatcher.dispatch(message)\n', '  File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch\n    return self._do_dispatch(endpoint, method, ctxt, args)\n', '  File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch\n    result = func(ctxt, **new_args)\n', '  File "/usr/lib/python3.6/site-packages/nova/exception_wrapper.py", line 72, in wrapped\n    context, exc, binary)\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/nova/exception_wrapper.py", line 63, in wrapped\n    return f(self, context, *args, **kw)\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/utils.py", line 1437, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 212, in decorated_function\n    kwargs[\'instance\'], e, sys.exc_info())\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 200, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8288, in pre_live_migration\n    bdm.save()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8249, in pre_live_migration\n    migrate_data)\n', '  File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 10343, in pre_live_migration\n    self._connect_volume(context, connection_info, instance)\n', '  File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 1808, in _connect_volume\n    vol_driver.connect_volume(connection_info, instance)\n', '  File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/volume/iscsi.py", line 64, in connect_volume\n    device_info = self.connector.connect_volume(connection_info[\'data\'])\n', '  File "/usr/lib/python3.6/site-packages/os_brick/utils.py", line 154, in trace_logging_wrapper\n    return f(*args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/oslo_concurrency/lockutils.py", line 391, in inner\n    return f(*args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 524, in connect_volume\n    self._cleanup_connection(connection_properties, force=True)\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 518, in connect_volume\n    return self._connect_single_volume(connection_properties)\n', '  File "/usr/lib/python3.6/site-packages/os_brick/utils.py", line 78, in _wrapper\n    return r(f, *args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 409, in call\n    do = self.iter(retry_state=retry_state)\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 368, in iter\n    raise retry_exc.reraise()\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 186, in reraise\n    raise self.last_attempt.result()\n', '  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 425, in result\n    return self.__get_result()\n', '  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 384, in __get_result\n    raise self._exception\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 412, in call\n    result = fn(*args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 597, in _connect_single_volume\n    raise exception.VolumeDeviceNotFound(device=\'\')\n', 'os_brick.exception.VolumeDeviceNotFound: Volume device not found at .\n'].
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] Traceback (most recent call last):
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]   File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8421, in _do_pre_live_migration_from_source
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]     block_migration, disk, dest, migrate_data)
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]   File "/usr/lib/python3.6/site-packages/nova/compute/rpcapi.py", line 947, in pre_live_migration
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]     **msg_args)
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]   File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/client.py", line 192, in call
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]     retry=self.retry, transport_options=self.transport_options)
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]   File "/usr/lib/python3.6/site-packages/oslo_messaging/transport.py", line 128, in _send
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]     transport_options=transport_options)
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 690, in send
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]     transport_options=transport_options)
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 680, in _send
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]     raise result
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] oslo_messaging.rpc.client.RemoteError: Remote error: VolumeDeviceNotFound Volume device not found at .
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] ['Traceback (most recent call last):\n', '  File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming\n    res = self.dispatcher.dispatch(message)\n', '  File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch\n    return self._do_dispatch(endpoint, method, ctxt, args)\n', '  File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch\n    result = func(ctxt, **new_args)\n', '  File "/usr/lib/python3.6/site-packages/nova/exception_wrapper.py", line 72, in wrapped\n    context, exc, binary)\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/nova/exception_wrapper.py", line 63, in wrapped\n    return f(self, context, *args, **kw)\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/utils.py", line 1437, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 212, in decorated_function\n    kwargs[\'instance\'], e, sys.exc_info())\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 200, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8288, in pre_live_migration\n    bdm.save()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8249, in pre_live_migration\n    migrate_data)\n', '  File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 10343, in pre_live_migration\n    self._connect_volume(context, connection_info, instance)\n', '  File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 1808, in _connect_volume\n    vol_driver.connect_volume(connection_info, instance)\n', '  File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/volume/iscsi.py", line 64, in connect_volume\n    device_info = self.connector.connect_volume(connection_info[\'data\'])\n', '  File "/usr/lib/python3.6/site-packages/os_brick/utils.py", line 154, in trace_logging_wrapper\n    return f(*args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/oslo_concurrency/lockutils.py", line 391, in inner\n    return f(*args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 524, in connect_volume\n    self._cleanup_connection(connection_properties, force=True)\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__\n    self.force_reraise()\n', '  File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise\n    raise self.value\n', '  File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 518, in connect_volume\n    return self._connect_single_volume(connection_properties)\n', '  File "/usr/lib/python3.6/site-packages/os_brick/utils.py", line 78, in _wrapper\n    return r(f, *args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 409, in call\n    do = self.iter(retry_state=retry_state)\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 368, in iter\n    raise retry_exc.reraise()\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 186, in reraise\n    raise self.last_attempt.result()\n', '  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 425, in result\n    return self.__get_result()\n', '  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 384, in __get_result\n    raise self._exception\n', '  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 412, in call\n    result = fn(*args, **kwargs)\n', '  File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 597, in _connect_single_volume\n    raise exception.VolumeDeviceNotFound(device=\'\')\n', 'os_brick.exception.VolumeDeviceNotFound: Volume device not found at .\n'].
2023-08-21 09:22:34.353 7 ERROR nova.compute.manager [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452]

With regards,
Swogat Pradhan

On Mon, Aug 21, 2023 at 3:14 PM Swogat Pradhan <swogatpradhan22@gmail.com> wrote:
Hi,
I have an instance that has disk /dev/vda present in ceph and the rest of the 6 volumes (10 TB) each on netapp.
I am trying to migrate the VM to another host but it is failing to migrate with error volume not found like below:

2023-08-21 09:22:31.852 7 WARNING os_brick.initiator.connectors.iscsi [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] Couldn't find iSCSI nodes because iscsiadm err: iscsiadm: No records found
: os_brick.exception.VolumeDeviceNotFound: Volume device not found at .
2023-08-21 09:22:31.866 7 WARNING os_brick.initiator.connectors.iscsi [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] iscsiadm stderr output when getting sessions: iscsiadm: No active sessions.
: os_brick.exception.VolumeDeviceNotFound: Volume device not found at .
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] Exception during message handling: os_brick.exception.VolumeDeviceNotFound: Volume device not found at .
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     res = self.dispatcher.dispatch(message)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return self._do_dispatch(endpoint, method, ctxt, args)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     result = func(ctxt, **new_args)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/exception_wrapper.py", line 72, in wrapped
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     context, exc, binary)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     self.force_reraise()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise self.value
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/exception_wrapper.py", line 63, in wrapped
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return f(self, context, *args, **kw)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/compute/utils.py", line 1437, in decorated_function
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return function(self, context, *args, **kwargs)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 212, in decorated_function
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     kwargs['instance'], e, sys.exc_info())
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     self.force_reraise()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise self.value
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 200, in decorated_function
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return function(self, context, *args, **kwargs)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8288, in pre_live_migration
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     bdm.save()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     self.force_reraise()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise self.value
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8249, in pre_live_migration
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     migrate_data)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 10343, in pre_live_migration
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     self._connect_volume(context, connection_info, instance)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 1808, in _connect_volume
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     vol_driver.connect_volume(connection_info, instance)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/nova/virt/libvirt/volume/iscsi.py", line 64, in connect_volume
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     device_info = self.connector.connect_volume(connection_info['data'])
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/os_brick/utils.py", line 154, in trace_logging_wrapper
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return f(*args, **kwargs)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_concurrency/lockutils.py", line 391, in inner
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return f(*args, **kwargs)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 524, in connect_volume
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     self._cleanup_connection(connection_properties, force=True)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 227, in __exit__
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     self.force_reraise()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 200, in force_reraise
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise self.value
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 518, in connect_volume
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return self._connect_single_volume(connection_properties)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/os_brick/utils.py", line 78, in _wrapper
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return r(f, *args, **kwargs)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 409, in call
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     do = self.iter(retry_state=retry_state)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 368, in iter
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise retry_exc.reraise()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 186, in reraise
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise self.last_attempt.result()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 425, in result
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     return self.__get_result()
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 384, in __get_result
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise self._exception
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 412, in call
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     result = fn(*args, **kwargs)
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server   File "/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py", line 597, in _connect_single_volume
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server     raise exception.VolumeDeviceNotFound(device='')
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server os_brick.exception.VolumeDeviceNotFound: Volume device not found at .
2023-08-21 09:22:34.348 7 ERROR oslo_messaging.rpc.server
2023-08-21 09:22:34.678 7 INFO nova.virt.block_device [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] Attempting to driver detach volume a005a015-0bb2-498e-9068-ac14570a5f2e from mountpoint /dev/vda
2023-08-21 09:22:34.680 7 WARNING nova.virt.block_device [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] Detaching volume from unknown instance
2023-08-21 09:22:34.682 7 WARNING nova.virt.libvirt.driver [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] During detach_volume, instance disappeared.: nova.exception.InstanceNotFound: Instance 5520dbd7-8f12-4041-bd8c-65b4b55b0452 could not be found.
2023-08-21 09:22:34.707 7 INFO nova.virt.block_device [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] Attempting to driver detach volume 01b9b430-9cfd-43b1-b674-b6fb830ee511 from mountpoint /dev/vdb
2023-08-21 09:22:34.708 7 WARNING nova.virt.block_device [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] Detaching volume from unknown instance
2023-08-21 09:22:34.710 7 WARNING nova.virt.libvirt.driver [req-6ed9d181-fa42-4a4a-b55b-2d08352d4e22 9f20ac539d60ff27487ce83f160e3c29bbeea1017d28fb5159b17c9e77454345 265571cce0b54251b17ace88630b5e46 - 64989c3036764834a755ff2bd55b30b3 64989c3036764834a755ff2bd55b30b3] [instance: 5520dbd7-8f12-4041-bd8c-65b4b55b0452] During detach_volume, instance disappeared.: nova.exception.InstanceNotFound: Instance 5520dbd7-8f12-4041-bd8c-65b4b55b0452 could not be found.



Server show :

+-------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------+
| Field                               | Value                                                                                                                                               |
+-------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------+
| OS-DCF:diskConfig                   | AUTO                                                                                                                                                |
| OS-EXT-AZ:availability_zone         | Watson                                                                                                                                              |
| OS-EXT-SRV-ATTR:host                | overcloud-novacompute-0.bdxworld.com                                                                                                                |
| OS-EXT-SRV-ATTR:hostname            | hkg2-cctv-archive-server-2                                                                                                                          |
| OS-EXT-SRV-ATTR:hypervisor_hostname | overcloud-novacompute-0.bdxworld.com                                                                                                                |
| OS-EXT-SRV-ATTR:instance_name       | instance-0000012f                                                                                                                                   |
| OS-EXT-SRV-ATTR:kernel_id           |                                                                                                                                                     |
| OS-EXT-SRV-ATTR:launch_index        | 0                                                                                                                                                   |
| OS-EXT-SRV-ATTR:ramdisk_id          |                                                                                                                                                     |
| OS-EXT-SRV-ATTR:reservation_id      | r-mdrfy13i                                                                                                                                          |
| OS-EXT-SRV-ATTR:root_device_name    | /dev/vda                                                                                                                                            |
| OS-EXT-SRV-ATTR:user_data           | None                                                                                                                                                |
| OS-EXT-STS:power_state              | Running                                                                                                                                             |
| OS-EXT-STS:task_state               | None                                                                                                                                                |
| OS-EXT-STS:vm_state                 | active                                                                                                                                              |
| OS-SRV-USG:launched_at              | 2023-01-05T09:49:54.000000                                                                                                                          |
| OS-SRV-USG:terminated_at            | None                                                                                                                                                |
| accessIPv4                          |                                                                                                                                                     |
| accessIPv6                          |                                                                                                                                                     |
| addresses                           | HKG2-CCTV=192.168.240.14                                                                                                                            |
| config_drive                        | True                                                                                                                                                |
| created                             | 2023-01-05T09:49:46Z                                                                                                                                |
| description                         | HKG2-CCTV-Archive-server-2                                                                                                                          |
| flavor                              | disk='150', ephemeral='0', extra_specs.hw:cpu_cores='10', extra_specs.hw:cpu_sockets='2', original_name='CCTV-VM-Flavor', ram='16384', swap='0',    |
|                                     | vcpus='10'                                                                                                                                          |
| hostId                              | 570b5ef66c44d3f80a1a498c9dbd8b9a2b690a1aee748bc9cb2cf6fb                                                                                            |
| host_status                         | UP                                                                                                                                                  |
| id                                  | 5520dbd7-8f12-4041-bd8c-65b4b55b0452                                                                                                                |
| image                               | N/A (booted from volume)                                                                                                                            |
| key_name                            | None                                                                                                                                                |
| locked                              | False                                                                                                                                               |
| locked_reason                       | None                                                                                                                                                |
| name                                | HKG2-CCTV-Archive-server-2                                                                                                                          |
| progress                            | 0                                                                                                                                                   |
| project_id                          | 265571cce0b54251b17ace88630b5e46                                                                                                                    |
| properties                          |                                                                                                                                                     |
| security_groups                     | name='CCTV services Incoming'                                                                                                                       |
|                                     | name='CCTV services Outgoing'                                                                                                                       |
| server_groups                       | []                                                                                                                                                  |
| status                              | ACTIVE                                                                                                                                              |
| tags                                |                                                                                                                                                     |
| trusted_image_certificates          | None                                                                                                                                                |
| updated                             | 2023-08-21T09:22:35Z                                                                                                                                |
| user_id                             | ff69985eea81fe6f11e9caa3f242623cbddc7ce21cdd864c9585d793533acb9e                                                                                    |
| volumes_attached                    | delete_on_termination='False', id='a005a015-0bb2-498e-9068-ac14570a5f2e'                                                                            |
|                                     | delete_on_termination='False', id='01b9b430-9cfd-43b1-b674-b6fb830ee511'                                                                            |
|                                     | delete_on_termination='False', id='a385a416-1d37-4111-b7ae-f182a54aeaef'                                                                            |
|                                     | delete_on_termination='False', id='95bafa69-b7cc-4d35-9002-723ca556a570'                                                                            |
|                                     | delete_on_termination='False', id='b5091e83-2afb-457c-abf8-ed855156b59f'                                                                            |
|                                     | delete_on_termination='False', id='0e9762bd-5229-433d-825e-6c7a77c6927c'                                                                            |
|                                     | delete_on_termination='False', id='9a00e144-8755-48d5-8907-7fa499172371'                                                                            |
+-------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------+

Please suggest how I can migrate the instance.

With regards,
Swogat Pradhan