[one-users] Having trouble with VM live migration

Tue May 25 12:22:23 PDT 2010

Here is what I get when I tried to virsh from one hosts to the other:

oneadmin at euca-cloud-node2:~$ virsh --connect qemu+ssh://10.200.41.177/system
The authenticity of host '10.200.41.177 (10.200.41.177)' can't be established.
RSA key fingerprint is 6a:d4:21:bc:a7:1e:48:25:ad:93:6f:b0:d7:c6:53:44.
Are you sure you want to continue connecting (yes/no)? yes
Welcome to virsh, the virtualization interactive terminal.

Type:  'help' for help with commands
       'quit' to quit

virsh # list
 Id Name                 State
----------------------------------
  1 one-16               running
  2 one-20               running

It keeps on mentioning about "The auntenticity of host "x.x.x.x" can't be established, even after I say "yes" a few times. Do you think this is the problem?
Is there any configuration that I missed?

Regards,
Sufiah 

-----Original Message-----
From: Sufiah Marcellina (Excell Data Corporation) 
Sent: Tuesday, May 25, 2010 10:39 AM
To: 'Tino Vazquez'
Cc: Users at lists.opennebula.org
Subject: RE: [one-users] Having trouble with VM live migration

Hi,

I've moved one to fixed a few things on OpenNebula, now I have shared filesystem, $VAR_DIR=/var/lib/one/vmdir.
I am running KVM.

Here are the details:
oneadmin at OpenNebula:~/images$ onehost list
 HID NAME                      RVM   TCPU   FCPU   ACPU    TMEM    FMEM STAT
   3 10.200.41.208               4    800    797    400 8192660 7851128   on
   4 10.200.41.177               4    800    797    400 8192660 7685076   on

oneadmin at OpenNebula:~/images$ onevm list
  ID     NAME STAT CPU     MEM        HOSTNAME        TIME
  16    vm-01 runn   0  524288   10.200.41.177 00 14:58:59
  20    vm-01 runn   0  524288   10.200.41.177 00 00:05:39
  21    vm-01 runn   0  524288   10.200.41.208 00 00:05:22

On hypervisor HID=3
virsh # list
 Id Name                 State
----------------------------------
  1 one-21               running

On hypervisor HID=4
virsh # list
 Id Name                 State
----------------------------------
  1 one-16               running
  2 one-20               running

Now, here is what I get when I try to do live migration:
Tue May 25 07:34:40 2010 [LCM][I]: New VM state is MIGRATE Tue May 25 07:34:41 2010 [VMM][I]: error: unable to connect to libvirtd at '10.200.41.177': Connection refused Tue May 25 07:34:41 2010 [VMM][I]: ExitCode: 1 Tue May 25 07:34:41 2010 [VMM][E]: Error live-migrating VM, unable to connect to libvirtd at '10.200.41.177': Connection refused Tue May 25 07:34:41 2010 [LCM][I]: Fail to life migrate VM. Assuming that the VM is still RUNNING (will poll VM).
Tue May 25 07:34:41 2010 [VMM][I]: ExitCode: 0

I get similar error when I try to live migrate from hypervisor 4 to 3.

Regards,
Sufiah 

-----Original Message-----
From: tinova79 at gmail.com [mailto:tinova79 at gmail.com] On Behalf Of Tino Vazquez
Sent: Tuesday, May 25, 2010 2:40 AM
To: Sufiah Marcellina (Excell Data Corporation)
Cc: Users at lists.opennebula.org
Subject: Re: [one-users] Having trouble with VM live migration

Hi Sufiah,

Which hypervisor are you using?

I am assuming you use some kind of shared filesystem to perform at least the live migration.

It would be nice to know where the VM is really running. For that, and assuming you are using:

1) KVM -> perform a "virsh list"
2) XEN -> perform a "xm list"

in both the source and the destination host, let's see where the "one-9" VM is running.

Regards,

-Tino

--
Constantino Vázquez, Grid & Virtualization Technology
Engineer/Researcher: http://www.dsa-research.org/tinova
DSA Research Group: http://dsa-research.org Globus GridWay Metascheduler: http://www.GridWay.org OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org

On Tue, May 25, 2010 at 12:03 AM, Sufiah Marcellina (Excell Data
Corporation) <a-sumarc at microsoft.com> wrote:
> Hi,
>
>
>
> I'm new to OpenNebula and have been trying to get livemigration works.
>
> I've install OpenNebula on Ubuntu 10.04, I can add hosts and VMs just 
> fine, the trouble comes when I try to migrate (cold) and live migrate 
> my VMs, it stuck in state "migr", here is what's in the log:
>
>
>
> oneadmin at OpenNebula:~/images$ onevm list
>
>   ID     NAME STAT CPU     MEM        HOSTNAME        TIME
>
>    8    vm-01 save   0  524288   10.200.41.208 00 21:10:05
>
>    9    vm-01 migr   0  524288   10.200.41.208 00 21:10:04
>
>
>
> /var/log/one/9.log:
>
> Mon May 24 08:16:55 2010 [VMM][I]: ExitCode: 0
>
> Mon May 24 08:16:55 2010 [VMM][I]: Monitor Information:
>
>         CPU   : -1
>
>         Memory: 524288
>
>         Net_TX: -1
>
>         Net_RX: -1
>
> Mon May 24 08:29:36 2010 [LCM][I]: New VM state is MIGRATE
>
>
>
> Please help.
>
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>