Re: [Xen-users] Live VM migration

[George Shuklin <george.shuklin@xxxxxxxxx>]

I do hear about guys who change route tables on router (one /32 route
per VM) according to VM migration. I think this can be used, but it
require very tight integration between router reconfiguration and vm
migration.

Technically OVS is just switch, not a router, so you can migrate VM
between different ip networks. 

XCP do require to have same 'network' object on source and destination
hosts but no one says they need to have same gateway.


Ð ÐÐ., 22/08/2011 Ð 10:50 -0500, Payal Shah ÐÐÑÐÑ:
> Hello ,
> Thank you for the reply. I got the results I was expecting.
> 
> 
> I had one more question regarding open vSwitch and live VM migration.
> Live VM migration requires that both the hosts should be in the same
> subnet. If the hosts are in different subnets then how can we do live
> VM migration? Can open vSwitch be used in this scenario?? Or is there
> any other virtual switch that can route the packets as per the new
> subnet?
> 
> 
> Thank you in advance
> 
> 
> On Wed, Aug 3, 2011 at 8:39 PM, George Shuklin
> <george.shuklin@xxxxxxxxx> wrote:
>         On XCP (1.1b, may be in XCP 1.0) there is a note in
>         xensource.log about %% of migration.
>         
>         And you can do xentrace in dom0 to see all hypercalls (but you
>         must understand what they means to get needed information).
>         
>         On 04.08.2011 00:42, Payal wrote:
>         
>         
>                 I have two hosts as Xen Server named host A and host B
>                 in the same network. A
>                 VM is created on Host A. Host A and B have a shared
>                 storage using NFS. While
>                 doing migration from host A to host B, how can I see
>                 the memory pages being
>                 migrated.
>                 If I run a small continuous program on the VM residing
>                 on host A, will the
>                 migration complete first or the sript running will
>                 complete first? How can I
>                 see that data is going in clear text? Is there a tool
>                 to see the packets
>                 going through? I tried using wireshark and spanning
>                 the ports, but I
>                 couldn't infer much. ANy help on this appreciated.
>                 Thank you,
>                 
>                 --
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>                 
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>                 
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> 
> 
> 
> -- 
> Payal Shah
> Dream as if you'll live forever, live as if you'll die today.
> 
> 
> 



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