[one-users] problem with getting Live Migration working

[Jaime Melis]

Hello Shyam,

after studying this, we have realised it's indeed a bug. Thanks a lot for
reporting it:

http://dev.opennebula.org/issues/1423

Cheers,
Jaime

On Mon, Aug 20, 2012 at 10:39 AM, C S Shyam Sundar
<csshyamsundar at gmail.com>wrote:

> Hi Jamie,
>
> The libvirt version is: *libvirt-0.9.10-21.0.1.el6_3.3.x86_64. *
> The OS is: CentOS 6.3. Issue is reproducible in other EL variants like
> Oracle Linux 6.3.
> ONe version is: 3.6.
>
> Note: adding -l migrate=migrate_local fails with the same error quoted in
> this thread. Attached the working oned.conf.
>
> Regards, Shyam.
>
> On Fri, Aug 17, 2012 at 12:19 PM, Jaime Melis <jmelis at opennebula.org>wrote:
>
>> Hello Shyam,
>>
>>  thanks a lot for the feedback and for letting us know it's working
>> again. I think this must be an issue of the libvirt version, and that the
>> default configuration supplied with OpenNebula is not working out  of the
>> box for this OS version.
>>
>> We will make some tests and probably update the documentation.
>>
>> By the way, would you mind sending us the libvirt version you're running.
>>
>> Thanks again!
>>
>> cheers,
>> Jaime
>>
>> On Thu, Aug 16, 2012 at 9:41 PM, C S Shyam Sundar <
>> csshyamsundar at gmail.com> wrote:
>>
>>> Finally, got the live migration working.
>>>
>>> The changes made:
>>> >> Removed "-l migrate" from the parameters inside KVM's VM_MAD section
>>> of *oned.conf*.
>>> >> Added the "--unsafe" parameter inside the *migrate *script inside *
>>> ONE_HOME/remotes*.
>>>
>>> Tested and found working in EL variants like CentOS and Oracle Linux.
>>>
>>> Regards, Shyam
>>>
>>> On Sat, Aug 11, 2012 at 5:32 PM, C S Shyam Sundar <
>>> csshyamsundar at gmail.com> wrote:
>>>
>>>> Hello,
>>>>
>>>> I have a problem with getting Live Migration working. Cold Migration
>>>> works.
>>>>
>>>> The Hypervisor is KVM on CentOS 6.3. I have one master node and two
>>>> VMHosts: *oned*,* one1* and *one2*. The oned machine runs OpenNebula
>>>> 3.6 on SQLite backend and sunstone. The same machine exposes *
>>>> /var/lib/one* under NFS. one1 and one2 are hosts configured under oned
>>>> and mounts /var/lib/one from NFS. The VMHosts, dummy network, filesystem
>>>> are under the same cluster.
>>>>
>>>> I have attached the oned.conf, log snippets from oned.log when a cold
>>>> migration occurs and when live migration occurs. The error is - " MIGRATE
>>>> FAILURE 5 Network action pre needs a ssh stream."
>>>>
>>>> What was tried:
>>>> 1) changed the options in kvm driver to -l migrate=migrate_local
>>>> 2) changed LIBVIRT_URI=qemu+ssh:///system in kvmrc ( on both
>>>> /var/tmp/one on vmhosts and /var/lib/one in the master node ).
>>>>
>>>> I'm stuck here and any help is appreciated.
>>>>
>>>> Regards, Shyam
>>>
>>> --
>>  Jaime Melis
>> Project Engineer
>> OpenNebula - The Open Source Toolkit for Cloud Computing
>> www.OpenNebula.org | jmelis at opennebula.org
>>
>


-- 
Jaime Melis
Project Engineer
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | jmelis at opennebula.org
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