[one-users] problem with getting Live Migration working

[C S Shyam Sundar]

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
>
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