Re: scripted migration (without Alt-Ctrl-2 / qemu-monitor) - possible?

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Tomasz Chmielewski wrote:
>>
>> Look up the qemu -monitor option.  This allows you to redirect the 
>> qemu console anywhere you like, including stdio, pipes, tcp sockets, 
>> etc.  It's wonderfully flexible.
>
> All right - so I see it belongs more to qemu documentation than KVM's 
> (+/- KVM extensions like migration etc.).
>
>
> Not as easy to use and intuitive as "xm" - some instruction here, as 
> Qemu's "-monitor dev" documentation seems a bit incomplete as it 
> mentions only "vc" and "stdio":

The various device options are documented under '-serial'.

>
>
> 1. Make a /tmp/guest socket; then start a guest
>
> qemu (...) -monitor unix:/tmp/quest,server,nowait
>
>
> 2. Show qemu-monitor's help:
>
> echo 'help' | socat - unix-connect:/tmp/quest
>
>
> The things get more complicated if you run multiple quests - you have 
> to keep track of the pipes etc.
>
>
> Certainly, it is possible to write a powerful backend to that - as you 
> say, if it supports tcp sockets, it would be even possible to support 
> multiple KVM/qemu servers with one program or a script - something 
> that Xen's "xm" can't easily do.
>
>
> Are there any ready solutions for that? Or the wheel still waits to be 
> invented?
>
>

http://libvirt.org/

-- 
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