From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47623) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gaUWN-0005AM-Pg for qemu-devel@nongnu.org; Fri, 21 Dec 2018 18:48:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gaUWN-0004qE-37 for qemu-devel@nongnu.org; Fri, 21 Dec 2018 18:47:59 -0500 From: Max Reitz Date: Sat, 22 Dec 2018 00:47:49 +0100 Message-Id: <20181221234750.23577-3-mreitz@redhat.com> In-Reply-To: <20181221234750.23577-1-mreitz@redhat.com> References: <20181221234750.23577-1-mreitz@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH 2/3] iotests: Bind qemu-nbd to localhost in 147 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Max Reitz , Kevin Wolf By default, qemu-nbd binds to 0.0.0.0. However, we then proceed to connect to "localhost". Usually, this works out fine; but if this test is run concurrently, some other test function may have bound a different server to ::1 (on the same port -- you can bind different serves to the same port, as long as one is on IPv4 and the other on IPv6). So running qemu-nbd works, it can bind to 0.0.0.0:NBD_PORT. But potentially a concurrent test has successfully taken [::1]:NBD_PORT. In this case, trying to connect to "localhost" will lead us to the IPv6 instance, where we do not want to end up. Fix this by just binding to "localhost". This will make qemu-nbd error out immediately and not give us cryptic errors later. (Also, it will allow us to just try a different port as of a future patch.) Signed-off-by: Max Reitz --- tests/qemu-iotests/147 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qemu-iotests/147 b/tests/qemu-iotests/147 index 05b374b7d3..3e10a9969e 100755 --- a/tests/qemu-iotests/147 +++ b/tests/qemu-iotests/147 @@ -92,7 +92,7 @@ class QemuNBD(NBDBlockdevAddBase): self.assertEqual(qemu_nbd('-f', imgfmt, test_img, *args), 0) =20 def test_inet(self): - self._server_up('-p', str(NBD_PORT)) + self._server_up('-b', 'localhost', '-p', str(NBD_PORT)) address =3D { 'type': 'inet', 'data': { 'host': 'localhost', --=20 2.19.2