[one-users] cancel live migration in progress

[Javier Fontan]

Unfortunately I don't know of any way to stop or recover the failed
migration with OpenNebula or manually.

Rebooting a physical host will basically destroy the running VMs and
most probably the disks will be corrupted.

On Tue, Oct 18, 2011 at 2:34 PM, samuel <samu60 at gmail.com> wrote:
> I add more information so you can follow the steps taken and the final
> issue.
>
> 1)segfault on node 2:
> [620617.517308] kvm[28860]: segfault at 420 ip 0000000000413714 sp
> 00007fff9136ea70 error 4 in qemu-system-x86_64[400000+335000]
>
> VMs work OK
>
> 2)restart libvirt on node 2
> /init.d/libvirt-bin restart
>
> libvirt is able to check local VM:
> # virsh list
>  Id Nombre               Estado
> ----------------------------------
>   2 one-47               ejecutando
>   3 one-44               ejecutando
>
> 3)tried to live-migrate one-44 from node2 to node3 using the sunstone web
> interface
>
> vm.log:
> Tue Oct 18 11:00:31 2011 [LCM][I]: New VM state is MIGRATE
>
> oned.log:
> Tue Oct 18 11:00:31 2011 [DiM][D]: Live-migrating VM 44
> Tue Oct 18 11:00:31 2011 [ReM][D]: VirtualMachineInfo method invoked
>
> 4)the end situation is:
> one-44 is in MIGRATE state for opennebula (there's no timeout paremeter set
> for the virsh live-migrate so it will be there forever (?))
>
> root at node3:# virsh list
>  Id Nombre               Estado
> ----------------------------------
>
> root at node2:# virsh list
>  Id Nombre               Estado
> ----------------------------------
>   2 one-47               ejecutando
>   3 one-44               ejecutando
>
>
> /var/log/libvirt/qemu/one-44.log is empty in both nodes (node2 and node3).
>
> My question is:
>
> i)How can I stop the live migration from the open nebula view so it does not
> lose the whole picture of the cloud and it keeps consistency?
> ii)is it safe to restart node2 or node3?
>
> Thank you in advance for any hint on this issue.
>
> Samuel.
> On 18 October 2011 11:58, samuel <samu60 at gmail.com> wrote:
>>
>> hi all,
>>
>> I'm having an issue with live migration.T here was a running instance on a
>> node that had a qemu segfault (i've noticed afterwards because the instances
>> were working).I've tried to live migrate the instance to another node
>> without problems but the instance remains in MIGRATE state "forever".
>> *is there any method to stope the live migration?
>> *if I restart the node with a qemu segfault, will the instances run ok
>> again? They have been running but the communication between opennebula and
>> KVM is broken so I'm not sure whether the cloud will keep consistency. I
>> think I read that if the name of the instance is the same and the node is
>> the same, opennebula will keep consistency.
>>
>> Can anyone help me, please?
>>
>> Thanks in advance,.
>> Samuel.
>>
>
>
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>



-- 
Javier Fontán Muiños
Project Engineer
OpenNebula Toolkit | opennebula.org