From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:42637)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lig.fnst@cn.fujitsu.com>) id 1XwpqK-00038Q-6s
	for qemu-devel@nongnu.org; Fri, 05 Dec 2014 05:10:38 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <lig.fnst@cn.fujitsu.com>) id 1XwpqE-0002tx-09
	for qemu-devel@nongnu.org; Fri, 05 Dec 2014 05:10:32 -0500
Received: from [59.151.112.132] (port=56252 helo=heian.cn.fujitsu.com)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lig.fnst@cn.fujitsu.com>) id 1XwpqD-0002fe-H6
	for qemu-devel@nongnu.org; Fri, 05 Dec 2014 05:10:25 -0500
Message-ID: <54818365.5030900@cn.fujitsu.com>
Date: Fri, 5 Dec 2014 18:05:25 +0800
From: Li Guang <lig.fnst@cn.fujitsu.com>
MIME-Version: 1.0
References: <BA2189DF-CFA4-4C14-A0E9-7684162A40DE@icloud.com>
In-Reply-To: <BA2189DF-CFA4-4C14-A0E9-7684162A40DE@icloud.com>
Content-Type: text/plain; charset="GB2312"
Content-Transfer-Encoding: quoted-printable
Subject: Re: [Qemu-devel] question: guest will hang when call system
 function in migration thread.
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: =?GB2312?B?s8LBug==?= <chenliang0016@icloud.com>
Cc: qemu list <qemu-devel@nongnu.org>

Hi,

which version you tested?
do you let vm continue to run after migration?
can you provide more info?

can't reproduce it on latest version.


Thanks!

On 12/04/2014 11:14 PM, =B3=C2=C1=BA wrote:
> Hi all
>
> guest will hang when call system function in migration thread. The cpu us=
age of vcpu thread is 100%.
>
> the code like this:
>
> static void *migration_thread(void *opaque)
> {
>     MigrationState *s =3D opaque;
>     int64_t initial_time =3D qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
>     int64_t setup_start =3D qemu_clock_get_ms(QEMU_CLOCK_HOST);
>     int64_t initial_bytes =3D 0;
>     int64_t max_size =3D 0;
>     int64_t start_time =3D initial_time;
>     bool old_vm_running =3D false;
>
>     //test code
>     system("df -h=A1=B1);       =20
>
>     qemu_savevm_state_begin(s->file, &s->params);
>     =A1=AD
>
> Is it anything wrong?  or it is not allow to call system in migration thr=
ead?
> =20
>