From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FCF8C48BE5 for ; Mon, 21 Jun 2021 04:40:13 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F0BC4611B0 for ; Mon, 21 Jun 2021 04:40:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F0BC4611B0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43218 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lvBjI-0003U4-0d for qemu-devel@archiver.kernel.org; Mon, 21 Jun 2021 00:40:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60860) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lvBZO-0008Mr-5H for qemu-devel@nongnu.org; Mon, 21 Jun 2021 00:29:58 -0400 Received: from indium.canonical.com ([91.189.90.7]:38350) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lvBZM-0001fb-9H for qemu-devel@nongnu.org; Mon, 21 Jun 2021 00:29:57 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.93 #5 (Debian)) id 1lvBZK-0003Yj-8F for ; Mon, 21 Jun 2021 04:29:54 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 3863B2E80AD for ; Mon, 21 Jun 2021 04:29:54 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Mon, 21 Jun 2021 04:17:32 -0000 From: Launchpad Bug Tracker <717929@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Expired; importance=Wishlist; assignee=None; X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: janitor jiribb th-huth X-Launchpad-Bug-Reporter: jiribb (jiribb) X-Launchpad-Bug-Modifier: Launchpad Janitor (janitor) References: <20110212234034.2762.77476.malonedeb@wampee.canonical.com> Message-Id: <162424905240.11837.12752395415846285033.malone@loganberry.canonical.com> Subject: [Bug 717929] Re: Serial communication between VMs problematic X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="ed184eb8c3e03c8a0c3f47e69a5c546619a1af7c"; Instance="production" X-Launchpad-Hash: 2889533ed5e21738067cf401891a3bd82c4de0a9 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -66 X-Spam_score: -6.7 X-Spam_bar: ------ X-Spam_report: (-6.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 717929 <717929@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" [Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete =3D> Expired -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/717929 Title: Serial communication between VMs problematic Status in QEMU: Expired Bug description: Hello, I want to setup serial communication between VM hosts but I have found it quite difficult...: ...because when trying unix sockets: - host A has serial device as unix socket (bind) - host B has serial device as client of unix socket - host A is down thus not unix socket does exist - host B can't be started because cannot read the socket: error: Failed to start domain opd1s02 error: internal error Process exited while reading console log output: ch= ar device redirected to /dev/pts/0 connect(unix:/tmp/test.sock): Connection refused chardev: opening backend "socket" failed Can that work like the cable is not plugged in? So host B can start and when the socket would exist it would connect to it? ...and when using pty and host device combination one cannot predict pty device under /dev/pts, it would be nice if would be possible to define exact device name. Tested on Fedora 14. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/717929/+subscriptions