From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:41157)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <stefanha@gmail.com>) id 1Y71uI-0001tG-Ag
	for qemu-devel@nongnu.org; Fri, 02 Jan 2015 08:04:47 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <stefanha@gmail.com>) id 1Y71uF-0004TY-4Y
	for qemu-devel@nongnu.org; Fri, 02 Jan 2015 08:04:46 -0500
Received: from mail-wi0-x22d.google.com ([2a00:1450:400c:c05::22d]:47234)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <stefanha@gmail.com>) id 1Y71uE-0004TR-Ss
	for qemu-devel@nongnu.org; Fri, 02 Jan 2015 08:04:43 -0500
Received: by mail-wi0-f173.google.com with SMTP id r20so27667620wiv.0
	for <qemu-devel@nongnu.org>; Fri, 02 Jan 2015 05:04:42 -0800 (PST)
Date: Fri, 2 Jan 2015 13:04:39 +0000
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20150102130439.GH10823@stefanha-thinkpad.redhat.com>
References: <CABYiri877w8CB4ZN=7-5qH5qFwk-Fa_tSo+Gk+qbpyL4B3HtvQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="gTtJ75FAzB1T2CN6"
Content-Disposition: inline
In-Reply-To: <CABYiri877w8CB4ZN=7-5qH5qFwk-Fa_tSo+Gk+qbpyL4B3HtvQ@mail.gmail.com>
Subject: Re: [Qemu-devel] 2.1 unexpected stop after exporting blockdev via
 nbd server
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: Andrey Korolyov <andrey@xdel.ru>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>


--gTtJ75FAzB1T2CN6
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Thu, Dec 18, 2014 at 07:38:59PM +0400, Andrey Korolyov wrote:
> 2.1-stable is currently crashing with the
>=20
> Co-routine re-entered recursively
> 2014-12-16 15:06:23.578+0000: shutting down
>=20
> after execution of (for example) following when using virtio-dp as a
> disk backend:
>=20
> '{ "execute": "nbd-server-start", "arguments": { "addr": { "type":
> "inet", "data": { "host": "10.6.0.1", "port": "3333" } } } }'
> '{ "execute": "nbd-server-add", "arguments": {"device":
> "drive-virtio-disk0","writable": false } }'

Hi,
You need patches from Max Reitz that make the run-time NBD server
support dataplane:
f214928 nbd: Follow the BDS' AIO context
3338442 block: Add AIO context notifiers
958c717 nbd: Drop nbd_can_read()

Please try QEMU v2.2.0 or qemu.git.

Stefan

--gTtJ75FAzB1T2CN6
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iQEcBAEBAgAGBQJUppdnAAoJEJykq7OBq3PI7kIH+wR7J9kO28iIPDJXeXn+mwjN
xxOtl2yUsiWozjkQ2/qodoS5R+/dBabJMntFp5G8CVi5J0HBWeZmNr7BO7DRDyut
pBduCMi4CqW9wNukg/bP8fRApBbjWsIYD/UC57b1MC/Mc8F5zQ2BCZ82B4W8AYwQ
Mlmef3zUrSDBQ6EGaLHeuUyB+NFMmD8pBbRz0zen+IvCnu4L0TWVr1zDlarqQI3n
cDJOfX22yX0h6O0FXwh9UKUPIldSFh0e41CAjDx0ZFsS40XR38I9ruK7wMmIJfMF
Z3ii+lVCQdFfBc/ffv3y1f5SJu4EcJIfr7Ergo8c9ZP2pL272p7/9obHL0zOyFw=
=FxtV
-----END PGP SIGNATURE-----

--gTtJ75FAzB1T2CN6--