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Date: Mon, 28 May 2012 13:30:55 +0100
Message-ID: <CAJSP0QXgfhN64P2Mxucs12EnsgXQWaKvrHRAUvTcnoNrzUBFCg@mail.gmail.com>
From: Stefan Hajnoczi <stefanha@gmail.com>
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Subject: Re: [Qemu-devel] Tracing message for mu
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To: =?Big5?B?Q2hhcmxlcy5Uc2FpLb2ysk2u/C2s46hztW+uabOh?= <charles.tsai@cloudena.com>
Cc: Hans de Goede <hdegoede@redhat.com>, =?Big5?B?Sm9uYWguV3Utp2SnZ6tqLazjqHO1b65ps6E=?= <jonah.wu@cloudena.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On Sat, May 26, 2012 at 7:50 AM, Charles.Tsai-=BD=B2=B2M=AE=FC-=AC=E3=A8s=
=B5o=AEi=B3=A1
<charles.tsai@cloudena.com> wrote:
> Hans replied me back and he suggested me to use strace.
> Hopefully, this issue can be resolved.
>
> Additionally, we encountered a tough issue right now.
> When we ran a 64-bit Windows 7 VM overnight, the kvm process was killed f=
or some reasons.
>
> Here is the qemu version I copied from the screen
>
> "QEMU emulator version 1.0 (qemu-kvm-devel), Copyright (c) 2003-2008 Fabr=
ice Bellard"
>
> The Qemu source is from Hans. Any suggestion to attack this issue?

Next time ensure that core dumps are enabled:
$ ulimit -c unlimited  # enable core dumps
$ qemu-kvm ...

If it crashes you'll have a core file that the gdb debugger can process.

It's also worth checking dmesg(1) output to see if your system ran out
of memory and the kernel killed the qemu-kvm process to free memory.

Hope this helps,
Stefan