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

Leander Bessa Beernaert leanderbb at gmail.com
Tue Jul 10 10:24:24 UTC 2012 

Is GlusterFS be more viable for a production environment?

On Tue, Jul 10, 2012 at 11:17 AM, Sébastien Han <han.sebastien at gmail.com>wrote:

> Great!
>
> The last time I ran the live-migration, it was with GlusterFS and CephFS
> and I didn't changed any permissions in libvirt. I did the live-migration
> with NFS once but it was in Diablo (horrible), I don't really remember my
> setup. Maybe you should consider to try GlusterFS.
>
>
> On Tue, Jul 10, 2012 at 12:07 PM, Leander Bessa Beernaert <
> leanderbb at gmail.com> wrote:
>
>> That did! Thanks :)
>>
>> Do you by change have any pointer on getting the live-migration to work
>> without running libvirt under root?
>>
>>
>> On Tue, Jul 10, 2012 at 10:55 AM, Sébastien Han <han.sebastien at gmail.com>wrote:
>>
>>> Change the vncserver_listen to 0.0.0.0 and re-try the live-migration,
>>> you should get better results :)
>>>
>>>
>>>
>>> On Tue, Jul 10, 2012 at 11:52 AM, Leander Bessa Beernaert <
>>> leanderbb at gmail.com> wrote:
>>>
>>>> If i don't run libvirt with root, it can't write to the shared folder.
>>>> It's the only way i've been able to get this to work. :S
>>>>
>>>> Below follows the configuration of one of the compute nodes. 10.0.1.1
>>>> is the controller and 10.0.1.2 is the compute node.
>>>>
>>>> novncproxy_base_url=http://10.0.1.1:6080/vnc_auto.html
>>>>> xvpvncproxy_base_url=http://10.0.1.1:6081/console
>>>>> vncserver_proxyclient_address=10.0.1.2
>>>>> vncserver_listen=10.0.1.2
>>>>
>>>>
>>>> On Tue, Jul 10, 2012 at 10:49 AM, Sébastien Han <
>>>> han.sebastien at gmail.com> wrote:
>>>>
>>>>> I forgot to ask, did you enable the vnc console?
>>>>>
>>>>> If so, with which parameters?
>>>>>
>>>>>
>>>>> On Tue, Jul 10, 2012 at 11:48 AM, Sébastien Han <
>>>>> han.sebastien at gmail.com> wrote:
>>>>>
>>>>>> Hi!
>>>>>>
>>>>>> Usually you get:
>>>>>>
>>>>>> 2012-07-09 13:58:27.179+0000: 10227: warning :
>>>>>>> qemuDomainObjTaint:1134 : Domain id=2 name='instance-00000002'
>>>>>>> uuid=57aca8a6-d062-4a08-8d87-e4d11d259ac7 is tainted: high-privileges
>>>>>>
>>>>>>
>>>>>> when you change permission in libvirt (root I presumed) which is not
>>>>>> necessary.
>>>>>>
>>>>>> 2012-07-10 09:26:02.244+0000: 10229: error : virExecWithHook:328 :
>>>>>>> Cannot find 'pm-is-supported' in path: No such file or directory
>>>>>>
>>>>>>
>>>>>> This error is harmless and can be easily solved by installing the
>>>>>> following package:
>>>>>>
>>>>>> sudo apt-get install pm-utils -y
>>>>>>
>>>>>>
>>>>>> Do you have something in the nova-scheduler logs?
>>>>>>
>>>>>> Cheers!
>>>>>>
>>>>>> On Tue, Jul 10, 2012 at 11:29 AM, Leander Bessa Beernaert <
>>>>>> leanderbb at gmail.com> wrote:
>>>>>>
>>>>>>> Well i've checked the libvirt logs on both nodes and i found these
>>>>>>> two lines:
>>>>>>>
>>>>>>> 2012-07-09 13:58:27.179+0000: 10227: warning :
>>>>>>>> qemuDomainObjTaint:1134 : Domain id=2 name='instance-00000002'
>>>>>>>> uuid=57aca8a6-d062-4a08-8d87-e4d11d259ac7 is tainted: high-privileges
>>>>>>>> 2012-07-09 13:58:27.736+0000: 10226: error : qemuMonitorIORead:513
>>>>>>>> : Unable to read from monitor: Connection reset by peer
>>>>>>>
>>>>>>>
>>>>>>> The log is alos filled with the message below, it gets repeated over
>>>>>>> and over and over.
>>>>>>>
>>>>>>> 2012-07-10 09:26:02.244+0000: 10229: error : virExecWithHook:328 :
>>>>>>>> Cannot find 'pm-is-supported' in path: No such file or directory
>>>>>>>> 2012-07-10 09:26:02.244+0000: 10229: warning : qemuCapsInit:856 :
>>>>>>>> Failed to get host power management capabilities
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Jul 10, 2012 at 8:16 AM, Razique Mahroua <
>>>>>>> razique.mahroua at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi Leander,
>>>>>>>> try to check libvirtd.log files,
>>>>>>>> is the instance still running on the first node while you are
>>>>>>>> lauching the migration process ?
>>>>>>>>
>>>>>>>> Razique
>>>>>>>>  *Nuage & Co - Razique Mahroua** *
>>>>>>>> razique.mahroua at gmail.com
>>>>>>>>
>>>>>>>>
>>>>>>>> Le 9 juil. 2012 à 16:09, Leander Bessa Beernaert a écrit :
>>>>>>>>
>>>>>>>> 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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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Mailing list: https://launchpad.net/~openstack
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>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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