[Openstack] [OpenStack][Nova] Live Migration Error

Mandar Vaze / मंदार वझे mandarvaze at gmail.com
Mon Jul 9 16:55:13 UTC 2012


I see "pre_live_migration" in destination compute log, so migration at
least started.

Since there are no errors in either compute log, is it possible that
migration is taking long ? (Just a possibility)
When you say "migration fails" what error did you get ?

-Mandar

On Mon, Jul 9, 2012 at 7:39 PM, Leander Bessa Beernaert <leanderbb at gmail.com
> wrote:

> Ok, so i've updated to the test packages from
>
> The migration still fails, but i see no errors in the logs. I'm trying to
> migrate a VM with the m1.tiny flavor from one machine to another. Their
> hardware are identical and they have more than enough resources to support
> the m1.tiny flavor:
>
> cloud35         (total)                         4    3867     186
>> cloud35         (used_now)                      0     312       5
>> cloud35         (used_max)                      0       0       0
>
>
> These are the logs from the origin compute node:
> http://paste.openstack.org/show/19319/  and  the destination compute
> node: http://paste.openstack.org/show/19318/ . The scheduler's log has no
> visible errors or stack traces.
>
> I'm still using nfsv4.
>
> Any ideas?
>
>
> On Fri, Jul 6, 2012 at 7:57 PM, Leander Bessa Beernaert <
> leanderbb at gmail.com> wrote:
>
>> Thanks for the tip, it's a better than nothing :)
>>
>> Regards,
>> Leander
>>
>> On Fri, Jul 6, 2012 at 6:32 PM, Mandar Vaze / मंदार वझे <
>> mandarvaze at gmail.com> wrote:
>>
>>> Not sure if you are able to debug this, but a while ago there was a bug
>>> where instance.id was passed where instance.uuid was expected. This
>>> used to cause some problem.
>>> It looks like you are using distribution package rather than devstack
>>> installation, so it is likely that the issue is now fixed. Can you try
>>> latest packages (and/or try devstack if you can)
>>>
>>> I wish I could help more.
>>>
>>> -Mandar
>>>
>>>
>>> On Fri, Jul 6, 2012 at 3:26 PM, Leander Bessa Beernaert <
>>> leanderbb at gmail.com> wrote:
>>>
>>>> Hello,
>>>>
>>>> I've recently setup a system to test out the live migration feature. So
>>>> far i've been able to launch the instances with the shared nfs folder.
>>>> However, when i run the live-migration command i encounter this error in
>>>> the destination compute node:
>>>>
>>>> 2012-07-05 09:33:48 ERROR nova.manager [-] Error during
>>>>> ComputeManager.update_available_resource: Domain not found: no domain with
>>>>> matching id 2
>>>>> 2012-07-05 09:33:48 TRACE nova.manager Traceback (most recent call
>>>>> last):
>>>>> 2012-07-05 09:33:48 TRACE nova.manager   File
>>>>> "/usr/lib/python2.7/dist-packages/nova/manager.py", line 155, in
>>>>> periodic_tasks
>>>>> 2012-07-05 09:33:48 TRACE nova.manager     task(self, context)
>>>>> 2012-07-05 09:33:48 TRACE nova.manager   File
>>>>> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2409, in
>>>>> update_available_resource
>>>>> 2012-07-05 09:33:48 TRACE nova.manager
>>>>> self.driver.update_available_resource(context, self.host)
>>>>> 2012-07-05 09:33:48 TRACE nova.manager   File
>>>>> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
>>>>> 1936, in update_available_resource
>>>>> 2012-07-05 09:33:48 TRACE nova.manager     'vcpus_used':
>>>>> self.get_vcpu_used(),
>>>>> 2012-07-05 09:33:48 TRACE nova.manager   File
>>>>> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
>>>>> 1743, in get_vcpu_used
>>>>> 2012-07-05 09:33:48 TRACE nova.manager     dom =
>>>>> self._conn.lookupByID(dom_id)
>>>>> 2012-07-05 09:33:48 TRACE nova.manager   File
>>>>> "/usr/lib/python2.7/dist-packages/libvirt.py", line 2363, in lookupByID
>>>>> 2012-07-05 09:33:48 TRACE nova.manager     if ret is None:raise
>>>>> libvirtError('virDomainLookupByID() failed', conn=self)
>>>>> 2012-07-05 09:33:48 TRACE nova.manager libvirtError: Domain not found:
>>>>> no domain with matching id 2
>>>>
>>>>
>>>> Any ideas on how to solve this?
>>>>
>>>> Regards,
>>>> Leander
>>>>
>>>> _______________________________________________
>>>> Mailing list: https://launchpad.net/~openstack
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>>>>
>>>>
>>>
>>
>
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