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=-5.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 495ACC433ED for ; Mon, 19 Apr 2021 19:29:35 +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 A5E36610CC for ; Mon, 19 Apr 2021 19:29:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A5E36610CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52242 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYZaP-0001Y1-G9 for qemu-devel@archiver.kernel.org; Mon, 19 Apr 2021 15:29:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45484) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYZED-0006Lo-5o for qemu-devel@nongnu.org; Mon, 19 Apr 2021 15:06:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:51830) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYZE8-0004S8-CU for qemu-devel@nongnu.org; Mon, 19 Apr 2021 15:06:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618859189; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=F92CLQjLcOZ2f+iWVJtdrsBytfHApeiNfabMoD13auQ=; b=S8khcOephO51aQ8j1ja5biNp3sjri8Z3XGPtn3xki0u/V7+g+9/LPdSYjbMG49OaSnNBYf gtS7PwLED45Dfqj8I1jpVpj9XMS8fzRrWaqsY2miqmaHByz6znUJ9wa+kLxU9oDYoWP3qz IZ37DybM3CYWTbFwbWxWxsikfv1lB6s= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-411-4MSazqD0NMaA3-hccjdD4A-1; Mon, 19 Apr 2021 15:06:27 -0400 X-MC-Unique: 4MSazqD0NMaA3-hccjdD4A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B749310053ED; Mon, 19 Apr 2021 19:06:26 +0000 (UTC) Received: from work-vm (ovpn-114-165.ams2.redhat.com [10.36.114.165]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B47C21037E83; Mon, 19 Apr 2021 19:06:25 +0000 (UTC) Date: Mon, 19 Apr 2021 20:06:23 +0100 From: "Dr. David Alan Gilbert" To: Jing-Wei Su Subject: Re: Live migration using a specified networking adapter Message-ID: References: MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/2.0.6 (2021-03-06) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: berrange@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Jing-Wei Su (jwsu1986@gmail.com) wrote: > Hello experts, > > > I have a network topology like this diagram. > > When start live migration moving a VM from Host A to B, > > the migration process uses either 10GbE (10.0.0.1) or 1 GbE (10.0.0.2), > > but the user cannot specify the source NIC by current migrate command. > > > To solve the problem, my rough idea is to add a source ipv4:port argument, > > the migration command seems like > > ``` > > migrate -b tcp:10.0.0.1:4444 -d tcp:10.0.0.3:4444. I'm not sure what the OS lets us do, but if it lets us pick the IP and port I think that would work; I don't think you need another tcp: since we already know which protocol we're using. > > ``` > > Is it an available solution? Or, is there any concern and sugesstion? > > Besides the idea, is there any good way to this issue? It's unusual; I don't think I've seen anyone ask for it before. I assume there's a wayto get the host network stack to prefer the 10GbE interface. Or to use separate subnets; rememember that each interface can have multiple IP addresses. Dave > > +-----------------------------------------------------+ > | 10GbE switch | > +-----------------------------------------------------+ > | | | > | | | > | | | > 10.0.0.1 | 10.0.0.2| 10.0.0.3| > +-+----------+-+--------+-+ +--+----------+---------+ > | |10GbE NIC | |1GbE NIC|| | |10GbE NIE | | > | +----------+ +--------+| | +----------+ | > | | | | > | +---------+ | | | > | | VM | | | | > | +---------+ | | | > +-------------------------+ +-----------------------+ > Host A Host B > > > Thank you. > > > Regards, > > Derek. -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK