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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 427C2C43331 for ; Fri, 3 Apr 2020 12:12:30 +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 0CBC020659 for ; Fri, 3 Apr 2020 12:12:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="b+DoWLAw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0CBC020659 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]:54540 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jKLBV-0003eM-7Q for qemu-devel@archiver.kernel.org; Fri, 03 Apr 2020 08:12:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51675) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jKLAo-0002y0-VU for qemu-devel@nongnu.org; Fri, 03 Apr 2020 08:11:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jKLAn-00019J-Kv for qemu-devel@nongnu.org; Fri, 03 Apr 2020 08:11:46 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:58827 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jKLAn-00018y-HX for qemu-devel@nongnu.org; Fri, 03 Apr 2020 08:11:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585915904; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TfdTfvDUv23qMYCSGI1OMfdr0FySXplZrnoSM0uzGoM=; b=b+DoWLAwCRXNBmmHDvEGkaXi+aMvmdGQZpbzigGa0oHcuQepMuli1GpPf3qjteup6aK6DA Ld/rYrw+uzltWs09KQr3E9726kWfjlD17jtxrTYlGN63YhnLyQzVcfWLLY85yhYd3MEwbM OZ1nuh1oKrzZHmIcPoP5n1GHuFh+yMo= 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-276-i-CgseA1PyKvsOd7iR2NZQ-1; Fri, 03 Apr 2020 08:11:41 -0400 X-MC-Unique: i-CgseA1PyKvsOd7iR2NZQ-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 331E71005509; Fri, 3 Apr 2020 12:11:40 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-69.ams2.redhat.com [10.36.112.69]) by smtp.corp.redhat.com (Postfix) with ESMTPS id DD02E10016E8; Fri, 3 Apr 2020 12:11:39 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 99C1B11385E2; Fri, 3 Apr 2020 14:11:38 +0200 (CEST) From: Markus Armbruster To: Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= Subject: Re: Qemu doesn't detect hard drive References: <5c877825-dbf0-295e-20b7-6949e15be745@redhat.com> Date: Fri, 03 Apr 2020 14:11:38 +0200 In-Reply-To: <5c877825-dbf0-295e-20b7-6949e15be745@redhat.com> ("Philippe =?utf-8?Q?Mathieu-Daud=C3=A9=22's?= message of "Fri, 3 Apr 2020 13:07:37 +0200") Message-ID: <87d08opy4l.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 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: Peter Maydell , "Aijaz.Baig" , "qemu-devel@nongnu.org" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Philippe Mathieu-Daud=C3=A9 writes: > On 4/3/20 9:39 AM, Peter Maydell wrote: >> On Fri, 3 Apr 2020 at 06:18, Aijaz.Baig wrot= e: >>> I would now like to add a hard disk for persistent storage and then tra= nsfer control from busybox initrd based rootfs over to the full fledged ver= sion offered with Linux. So I add it to the command line >>> >>> `sudo qemu-system-arm -m 1024M -M vexpress-a9 -D qemu.log -drive if=3Dn= one,format=3Draw,file=3Ddisk.img -kernel buildroot-2019.02.5/output/images/= zImage -dtb buildroot-2019.02.5/output/images/vexpress-v2p-ca9.dtb -append = "console=3DttyAMA0,115200 kgdboc=3Dkbd,ttyAMA0,115200 ip=3Ddhcp nokaslr" -i= nitrd buildroot-2019.02.5/output/images/rootfs.cpio -nographic -net nic -ne= t bridge,br=3Dmybridge -s >> >> This command line creates a "drive" object but doesn't plug it in to any= thing >> (it's like asking QEMU to model a board, with a hard drive sat next to i= t >> on the desk but no cable between them :-)) > > Should QEMU warn the user about unplugged drives? > > Or is it an expected feature (these drives might be hot-plugged later?) For what it's worth, it warns about unused network backends, but not about unused block or character backends. All of them can be connected later in the monitor.