From nobody Tue Nov 26 15:23:49 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=reject dis=none) header.from=linux.ibm.com ARC-Seal: i=1; a=rsa-sha256; t=1707156905; cv=none; d=zohomail.com; s=zohoarc; b=GifQ5/2U31NexvPuK0J1T1BxCl2H4OfBlfSqyaK1Dptran+rEbtBlvPd17pbKzU6e6xChOE4QRIXGh0CYHhRrAOO2xaxy8icnoLTQzz6epfT8Os40z0RwLHDLRUZXrn7T6i/c4Z7ckAQmllPYGTa+RCTeyab4YC2GbW7PHpHOIY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707156905; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=d6mFtn0PQZTKA+LX0i1nzkmshbEStQbBoU8E7zQM+zY=; b=KhHudJw0KXiM7YN/pzu6DEaD1clZHJfPWiW1+IEVp6vVQKFB32HM+w0N8j6km2P9EQSlYM21PdupIz3j8Csfu4nj3W72sWgxgCMs2m1JnKtfnsILkU69nUFTAKEegmEEX7ZwDsijYWX9wvHq0VybxlRyZWvehkO6ibNQ1Xsvvw8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1707156905120477.84723300898986; Mon, 5 Feb 2024 10:15:05 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rX3Tu-00060h-Bi; Mon, 05 Feb 2024 13:14:10 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rX3Ts-00060N-Co for qemu-devel@nongnu.org; Mon, 05 Feb 2024 13:14:08 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rX3Tq-0005vA-BN for qemu-devel@nongnu.org; Mon, 05 Feb 2024 13:14:08 -0500 Received: from pps.filterd (m0353726.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 415I1vAc000499; Mon, 5 Feb 2024 18:14:00 GMT Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3w34kj89ch-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 05 Feb 2024 18:13:59 +0000 Received: from m0353726.ppops.net (m0353726.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 415I2S0V002061; Mon, 5 Feb 2024 18:13:59 GMT Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3w34kj89c6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 05 Feb 2024 18:13:59 +0000 Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 415Fs5sw019996; Mon, 5 Feb 2024 18:13:58 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 3w1ytstd8h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 05 Feb 2024 18:13:58 +0000 Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 415IDuT965929700 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 5 Feb 2024 18:13:56 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5072F20043; Mon, 5 Feb 2024 18:13:56 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9DB0220040; Mon, 5 Feb 2024 18:13:55 +0000 (GMT) Received: from heavy.ibm.com (unknown [9.171.57.170]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 5 Feb 2024 18:13:55 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=d6mFtn0PQZTKA+LX0i1nzkmshbEStQbBoU8E7zQM+zY=; b=lFuLR03TqLJyWJLOr17u9f6no7D/XbRQcZx/AXZ0i7oIWQA1TQpjFNs+uVxVs5S3sDEs 55MpG0f0X5PA0FTBtur0g/5ndJbYCbsxLKoCYm3WAwm1GyMT6RvaOi63sJZOHRpB/Tzs yEB4aY2gsyfHVZ7VHZMuOhhap6FypTM5bFNXIx+sHxnVkYK4YUff38tScQv+2OLmTMK3 i25lUYM3Xs+LUsK5hc+7oU70DPjpFp/X61qgsiQNapbQLzid4bNeEUM7j63WJJMDyHsy N/iezkiR0VJtgI2BFoSnOLxIq7yUwqRcOXHHr3agRZoa9OB4zCni5+Yy6Xci6iS/t/Jl bQ== From: Ilya Leoshkevich To: Paolo Bonzini , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Ed Maste , Li-Wen Hsu , Warner Losh Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Thomas Huth , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Wainer dos Santos Moschetta , Beraldo Leal , Kyle Evans , qemu-devel@nongnu.org, Ilya Leoshkevich Subject: [PATCH v2 1/4] tests/vm: Set UseDNS=no in the sshd configuration Date: Mon, 5 Feb 2024 19:11:32 +0100 Message-ID: <20240205181352.1567-2-iii@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240205181352.1567-1-iii@linux.ibm.com> References: <20240205181352.1567-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 30peAc-LUQ37HLHZ1PmoO2U_D7Jg2Tjl X-Proofpoint-ORIG-GUID: Oo5UJMC20dmEmObSxYccbLn1c7EiRJCi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-05_12,2024-01-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 adultscore=0 clxscore=1015 mlxscore=0 impostorscore=0 spamscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402050137 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1707156906509100002 Content-Type: text/plain; charset="utf-8" make vm-build-freebsd sometimes fails with "Connection timed out during banner exchange". The client strace shows: 13:59:30 write(3, "SSH-2.0-OpenSSH_9.3\r\n", 21) =3D 21 13:59:30 getpid() =3D 252655 13:59:30 poll([{fd=3D3, events=3DPOLLIN}], 1, 5000) =3D 1 ([{fd=3D3, re= vents=3DPOLLIN}]) 13:59:32 read(3, "S", 1) =3D 1 13:59:32 poll([{fd=3D3, events=3DPOLLIN}], 1, 3625) =3D 1 ([{fd=3D3, re= vents=3DPOLLIN}]) 13:59:32 read(3, "S", 1) =3D 1 13:59:32 poll([{fd=3D3, events=3DPOLLIN}], 1, 3625) =3D 1 ([{fd=3D3, re= vents=3DPOLLIN}]) 13:59:32 read(3, "H", 1) =3D 1 There is a 2s delay during connection, and ConnectTimeout is set to 1. Raising it makes the issue go away, but we can do better. The server truss shows: 888: 27.811414714 socket(PF_INET,SOCK_DGRAM|SOCK_CLOEXEC,0) =3D 5 (0x5) 888: 27.811765030 connect(5,{ AF_INET 10.0.2.3:53 },16) =3D 0 (0x0) 888: 27.812166941 sendto(5,"\^Z/\^A\0\0\^A\0\0\0\0\0\0\^A2"...,39,0,NUL= L,0) =3D 39 (0x27) 888: 29.363970743 poll({ 5/POLLRDNORM },1,5000) =3D 1 (0x1) So the delay is due to a DNS query. Disable DNS queries in the server config. Reviewed-by: Thomas Huth Signed-off-by: Ilya Leoshkevich --- tests/vm/basevm.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py index 61725b83254..c0d62c08031 100644 --- a/tests/vm/basevm.py +++ b/tests/vm/basevm.py @@ -396,60 +396,62 @@ def console_consume(self): self.console_log(output) vm.console_socket.setblocking(1) =20 def console_send(self, command): vm =3D self._guest if self.debug: logline =3D re.sub("\n", "", command) logline =3D re.sub("[\x00-\x1f]", ".", logline) sys.stderr.write("con send: %s\n" % logline) for char in list(command): vm.console_socket.send(char.encode("utf-8")) time.sleep(0.01) =20 def console_wait_send(self, wait, command): self.console_wait(wait) self.console_send(command) =20 def console_ssh_init(self, prompt, user, pw): sshkey_cmd =3D "echo '%s' > .ssh/authorized_keys\n" \ % self._config['ssh_pub_key'].rstrip() self.console_wait_send("login:", "%s\n" % user) self.console_wait_send("Password:", "%s\n" % pw) self.console_wait_send(prompt, "mkdir .ssh\n") self.console_wait_send(prompt, sshkey_cmd) self.console_wait_send(prompt, "chmod 755 .ssh\n") self.console_wait_send(prompt, "chmod 644 .ssh/authorized_key= s\n") =20 def console_sshd_config(self, prompt): self.console_wait(prompt) self.console_send("echo 'PermitRootLogin yes' >> /etc/ssh/sshd_con= fig\n") + self.console_wait(prompt) + self.console_send("echo 'UseDNS no' >> /etc/ssh/sshd_config\n") for var in self.envvars: self.console_wait(prompt) self.console_send("echo 'AcceptEnv %s' >> /etc/ssh/sshd_config= \n" % var) =20 def print_step(self, text): sys.stderr.write("### %s ...\n" % text) =20 def wait_ssh(self, wait_root=3DFalse, seconds=3D300, cmd=3D"exit 0"): # Allow more time for VM to boot under TCG. if not kvm_available(self.arch): seconds *=3D self.tcg_timeout_multiplier starttime =3D datetime.datetime.now() endtime =3D starttime + datetime.timedelta(seconds=3Dseconds) cmd_success =3D False while datetime.datetime.now() < endtime: if wait_root and self.ssh_root(cmd) =3D=3D 0: cmd_success =3D True break elif self.ssh(cmd) =3D=3D 0: cmd_success =3D True break seconds =3D (endtime - datetime.datetime.now()).total_seconds() logging.debug("%ds before timeout", seconds) time.sleep(1) if not cmd_success: raise Exception("Timeout while waiting for guest ssh") =20 def shutdown(self): self._guest.shutdown(timeout=3Dself._shutdown_timeout) =20 --=20 2.43.0