OpenStack Compute (nova)

swap volume is not available because the parameters are opposite

Bug #1536442 reported by jingtao liang on 2016-01-21

This bug report is a duplicate of: Bug #1451860: Attached volume migration failed, due to incorrect arguments order passed to swap_volume. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	OpenStack Compute (nova)	New	Undecided	Unassigned

Bug Description

version: kilo

description:

in the file：/nova/compute/manager.py . the functions like this:

class _ComputeV4Proxy(object):

    def swap_volume(self, ctxt, instance, old_volume_id, new_volume_id):
        return self.manager.swap_volume(ctxt, instance, old_volume_id,
                                        new_volume_id)

class ComputeManager(manager.Manager):

   @wrap_exception()
    @reverts_task_state
    @wrap_instance_fault
    def swap_volume(self, context, old_volume_id, new_volume_id, instance):

you see ,the parameters of instance should be in the right place .

product steps:

1 create a volume
2 create a vm
3 attach the volume to the vm
4 migrate the volume to another backend.

error logs:

2016-01-21 10:57:24.916 24271 ERROR root [req-15d4d656-06ee-4c02-8da0-af77aaaa9944 9134a1a11e5441c29e37757231f36450 32bfe3124bb2478aad3e6aa1cee09f14 - - -] Original exception being dropped: ['Traceback (most recent call last):\n', ' File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 392, in decorated_function\n return function(self, context, *args, **kwargs)\n', ' File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 5628, in swap_volume\n instance.uuid)\n', "AttributeError: 'unicode' object has no attribute 'uuid'\n"]
2016-01-21 10:57:24.916 24271 ERROR root [req-15d4d656-06ee-4c02-8da0-af77aaaa9944 9134a1a11e5441c29e37757231f36450 32bfe3124bb2478aad3e6aa1cee09f14 - - -] Original exception being dropped: ['Traceback (most recent call last):\n', ' File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 347, in decorated_function\n return function(self, context, *args, **kwargs)\n', ' File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 404, in decorated_function\n kwargs[\'instance\'], e, sys.exc_info())\n', ' File "/usr/lib/python2.7/site-packages/nova/compute/utils.py", line 89, in add_instance_fault_from_exc\n fault_obj.instance_uuid = instance.uuid\n', "AttributeError: 'unicode' object has no attribute 'uuid'\n"]
2016-01-21 10:57:24.917 24271 ERROR oslo_messaging.rpc.dispatcher [req-15d4d656-06ee-4c02-8da0-af77aaaa9944 9134a1a11e5441c29e37757231f36450 32bfe3124bb2478aad3e6aa1cee09f14 - - -] Exception during message handling: string indices must be integers
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher Traceback (most recent call last):
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher executor_callback))
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher executor_callback)
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 130, in _do_dispatch
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher result = func(ctxt, **new_args)
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 8262, in swap_volume
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher new_volume_id)
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/nova/exception.py", line 88, in wrapped
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher payload)
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 85, in __exit__
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher six.reraise(self.type_, self.value, self.tb)
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/nova/exception.py", line 71, in wrapped
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher return f(self, context, *args, **kw)
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 363, in decorated_function
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher instance_uuid = keyed_args['instance']['uuid']
2016-01-21 10:57:24.917 24271 TRACE oslo_messaging.rpc.dispatcher TypeError: string indices must be integers