Re: [Qemu-discuss] Unable to use -monitor option

[Mike Lovell]

On 11/04/2014 10:26 AM, 邓尧 wrote:
> Hi,
> I compiled qemu from source, everything seems to be find until I tried 
> to use the -monitor option. qemu was conifgured as following:
>
> './configure' '--prefix=/opt/App/qemu' '--disable-sdl' '--enable-vnc' 
> '--disable-xen' '--enable-vnc-tls' '--enable-vnc-sasl' 
> '--enable-vnc-jpeg' '--enable-vnc-png' '--disable-curses' 
> '--enable-kvm' '--disable-user' '--target-list=x86_64-softmmu 
> i386-softmmu' '--enable-libusb' '--disable-gtk' 
> '--extra-ldflags=-Wl,-rpath=/usr/local/lib'
>
> The qemu command line is:
> qemu-system-i386 x.img -monitor tcp:127.0.0.1:9999 
> <http://127.0.0.1:9999>,nowait,nodelay
>
> Here are the error messages:
> qemu-system-i386: -monitor tcp:0.0.0.0:9999 
> <http://0.0.0.0:9999>,nowait,nodelay: Failed to connect to socket: 
> Connection refused
> qemu-system-i386: -monitor tcp:0.0.0.0:9999 
> <http://0.0.0.0:9999>,nowait,nodelay: chardev: opening backend 
> "socket" failed
>
> I tried similar command line options on Ubuntu, these options seem to 
> be fine with Ubuntu, but doesn't work with the binaries compiled by 
> myself.
>
> What went wrong ?
>
> Thanks.
> Deng Yao

the options you have provided for the -monitor command instruct qemu to 
try to connect to 127.0.0.1:9999. is there something listening on that 
port to receive the connection from qemu? if you are intending for qemu 
to listen for connections, then you need to add the 'server' option to 
the monitor options. such as the following.

'-monitor tcp:127.0.0.1:9999,nowait,nodelay,server'

mike