Re: [Xen-devel] Need help with qemu args debug

[Fantu <fantonifabio@xxxxxxxxxx>]

Ian Campbell-10 wrote
> 
> That should be possible, but you haven't shown your code so I can't say
> where you have gone wrong.
> 
> What I often do is create qemu-debug.sh:
>       #!/bin/sh
>       echo "Starting QEMU with: $*" >> /tmp/qemu-dbg.log
>       exec /usr/lib/xen/bin/qemu-system-i386 $@
> 
> And then using device_model_override to call this instead of calling
> qemu directly.
> 

Thanks for reply

Qxl graphic is needed for many things with spice, I start to try add it
following this: http://spice-space.org/docs/spice_user_manual.pdf

On libxl_dm.c add this line:
flexarray_append(dm_args, "-qxl 1");
before this:
flexarray_append(dm_args, "-spice");

With dm override give:
Starting QEMU with: -xen-domid 22 -chardev
socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-22,server,nowait -mon
chardev=libxl-cmd,mode=control -name PRECISEHVM -vnc 127.0.0.1:0,to=99 -qxl
1 -spice port=6000,tls-port=0,addr=0.0.0.0,password=test,agent-mouse=on
-boot order=c -smp 2,maxcpus=3 -device
rtl8139,id=nic0,netdev=net0,mac=00:16:3e:6b:81:89 -netdev
type=tap,id=net0,ifname=tap22.0,script=no -M xenfv -m 1024 -drive
file=/mnt/vm/disks/PRECISEHVM.disk1.xm,if=ide,index=0,media=disk,format=raw
-drive file=/dev/sr0,if=ide,index=1,media=cdrom,format=raw

And on /var/log/xen/qemu-dm-PRECISEHVM.log:
qemu-system-i386: -qxl: invalid option

There isn't other -vga or -nographic options, I not undestand the problem,
without qxl work but on spice connect and load see the cirrus video card,
video performance is not good and is impossible resize resolution, qxl
graphic is needed.
I have also try -vga qxl but same problem.

Before i try to add permant dm_args debug on log with:
On libxl_dm.c add this line:
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "dm_args: ", flexarray_contents(dm_args)
);
before this:
return (char **) flexarray_contents(dm_args);

Show:
libxl_dm.c: In function Ãlibxl__build_device_model_args_newÃ:
libxl_dm.c:582:2: error: too many arguments for format
[-Werror=format-extra-args]
cc1: all warnings being treated as errors



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