qemu-kvm monitor

qemu-kvm monitor

[Onkar Mahajan]

Hi All,

I have following command line options to qemu-kvm ( apart from others
- irrelevant here !! )

-chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/vm00-SMP.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control

How do I now start the qemu-kvm monitor control session ??

Regards,
Onkar

Re: qemu-kvm monitor

[Stefan Hajnoczi]

On Tue, Apr 12, 2011 at 12:26 PM, Onkar Mahajan <kern.devel@gmail.com> wrote:
> Hi All,
>
> I have following command line options to qemu-kvm ( apart from others
> - irrelevant here !! )
>
> -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/vm00-SMP.monitor,server,nowait
> -mon chardev=charmonitor,id=monitor,mode=control
>
> How do I now start the qemu-kvm monitor control session ??

It looks like you're using libvirt.  Here are two methods of getting
at the QEMU monitor through libvirt:

http://blog.vmsplice.net/2011/03/how-to-access-qemu-monitor-through.html

Basically, libvirt is already connected to the vm00-SMP.monitor UNIX
domain socket.  You need to either use the qemu-monitor-command virsh
command or you need to stop libvirtd and connect to the socket
manually (e.g. using netcat).

Stefan

Re: qemu-kvm monitor

[Jan Kiszka]

On 2011-04-12 14:08, Stefan Hajnoczi wrote:
> On Tue, Apr 12, 2011 at 12:26 PM, Onkar Mahajan <kern.devel@gmail.com> wrote:
>> Hi All,
>>
>> I have following command line options to qemu-kvm ( apart from others
>> - irrelevant here !! )
>>
>> -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/vm00-SMP.monitor,server,nowait
>> -mon chardev=charmonitor,id=monitor,mode=control
>>
>> How do I now start the qemu-kvm monitor control session ??
> 
> It looks like you're using libvirt.  Here are two methods of getting
> at the QEMU monitor through libvirt:
> 
> http://blog.vmsplice.net/2011/03/how-to-access-qemu-monitor-through.html
> 
> Basically, libvirt is already connected to the vm00-SMP.monitor UNIX
> domain socket.  You need to either use the qemu-monitor-command virsh
> command or you need to stop libvirtd and connect to the socket
> manually (e.g. using netcat).

...or pass another -mon command line switch set via the config
pass-though feature of libvirt. The warning related to
qemu-monitor-command applies to that approach as well of course.

Jan

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