[libvirt-users] monitor option in libvirt ?

[Riccardo Veraldi]

because I wold like to do this:

1) start qemu-kvm and redirect the monitor to a named pipe called let's 
say my.pipe

2) write into the named pipe with a script when I want to take a 
snapshot, somthing like:

    echo "savevm mysnapshot">my.pipe


bascally I need to be able to access the monitor to issue a savevm 
command because I want to take
a snapshot of my qcow2 images.

How could I do it otherwise ?

thank you

Rick






Daniel P. Berrange wrote:
> On Tue, Jan 26, 2010 at 01:52:13PM +0100, Riccardo Veraldi wrote:
>   
>> Hello,
>>
>> I woudl liek to start qemu-kvm with -monitor myfile.pipe options
>> instead of default -monitor pty
>>
>> Anyway I have not found any way to tell libvirt (using virsh) that I 
>> want to set a specific
>> -monitor option to the qemu-kvm command line.
>> How can I do this ?
>>     
>
> libvirt controls the monitor interface so it can manage the guest while it
> is running.  As such we don't give users access to it, since having two
> different things changing the running guest state is a recipe for trouble
>
> Why do you need to acess the monitor directly ?  Our goal is to expose
> APIs for any monitor command that users would need to use in administrative
> tasks
>
> Regards,
> Daniel
>