From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: 2.6.35.11 + qemu-kvm 0.14.0 + Windows XP RDP access = unstable
Date: Tue, 08 Mar 2011 12:19:00 +0200
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To: =?ISO-8859-1?Q?Thomas_L=F8cke?= <thomas.granvej6@gmail.com>
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On 03/08/2011 08:43 AM, Thomas L=F8cke wrote:
> Hey all,
>
> I have 9 Windows XP guests running on a KVM host. The host is
> Slackware 13.1 x86_64 with kernel 2.6.35.11.
>
> All the guests are being accessed using the built-in RDP server in
> Windows XP. This worked perfectly with qemu-kvm 0.13.0, but with
> 0.14.0 the connection is dropped every 5-10 minutes.
>
> This is the command used to start the guests:
>
> /opt/qemu-0.13.0/bin/qemu-system-x86_64 -name fdacs1sa1_15,
> process=3Dfdacs1sa1_15 \
>      -pidfile /var/run/kvm/15.pid \
>      -drive file=3D/storage_slow_one/fd_acs2_sa2.raw,snapshot=3Doff,i=
f=3Dvirtio,media=3Ddisk,cache=3Dnone,format=3Draw,boot=3Don
> \
>      -monitor unix:/var/run/kvm/15.monitor,server,nowait \
>      -cpu qemu64 \
>      -smp 1 \
>      -m 512 \
>      -k da \
>      -vnc :15 \
>      -rtc base=3Dlocaltime,clock=3Dhost \
>      -tdf \
>      -net nic,macaddr=3Dde:ad:be:ef:00:15,model=3Dvirtio \
>      -net tap,ifname=3Dtap_15,script=3Dno,downscript=3Dno \
>      -runas kvm \
>      -daemonize \
>      -usbdevice tablet
>
> The virtio drivers used are virtio-win-1.1.16.
>
> Access via the qemu-kvm VNC interface does not experience these
> connection drops. There are no visible errors in the Windows XP
> guests.
>
> Now, since I don't have any issues with qemu-kvm 0.13.0, it is not a
> problem for me to go back to using this version instead of the new
> 0.14.0.
>
> So:
>      2.6.35.11 + 0.13.0 =3D Flawless operation. It just hums along.
>      2.6.35.11 + 0.14.0 =3D The connection to the internal Windows XP=
 RDP
> server breaks every 5-10 minutes.
>
> Anybody else who've experienced something similar?

You might try logging the connection with wireshark (start on the,=20
perhaps later also in the guest) to see what's the cause.  If you run i=
t=20
on both guest and host, you can see if packets are lost or corrupted.

--=20
error compiling committee.c: too many arguments to function