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=-10.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 31C9CC07E96 for ; Thu, 8 Jul 2021 14:05:01 +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 C5F0461451 for ; Thu, 8 Jul 2021 14:05:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C5F0461451 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; 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bh=YcX2Lvqt+vIdwaTglzNdAulbCTUevQmfpy03+mV5gwg=; b=MQhs8RYPAyvTlxQFv/0TIgTDDXM11nFjxsEXcI9cImkqVNmZeo9nqOJHm45gLawRdN0pu5 GIAc6oyuTIMxYC9kh0lJtAdnLA8j2b0dXY7MW2VwjwRbYqcYKGMEEyhrMC4IoDbTsz9/4O KlooQU2StKex1hrxg+6r8jOt58Wf6z8= 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-589-URbXCbERP5qcXKZgVL_f-g-1; Thu, 08 Jul 2021 10:04:03 -0400 X-MC-Unique: URbXCbERP5qcXKZgVL_f-g-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 995B9100D69D; Thu, 8 Jul 2021 14:04:01 +0000 (UTC) Received: from redhat.com (ovpn-112-103.phx2.redhat.com [10.3.112.103]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9C38E101E5AF; Thu, 8 Jul 2021 14:03:54 +0000 (UTC) Date: Thu, 8 Jul 2021 09:03:52 -0500 From: Eric Blake To: Kevin Wolf Subject: Re: [PATCH 2/2] qemu-img: Require -F with -b backing image Message-ID: <20210708140352.frlzq6qxofpir4fj@redhat.com> References: <20210503213600.569128-1-eblake@redhat.com> <20210503213600.569128-3-eblake@redhat.com> MIME-Version: 1.0 In-Reply-To: User-Agent: NeoMutt/20210205-556-f84451-dirty X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@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=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.45, 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=unavailable 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: "reviewer:Incompatible changes" , qemu-devel@nongnu.org, "open list:Block layer core" , Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Jul 08, 2021 at 03:00:36PM +0200, Kevin Wolf wrote: > Am 03.05.2021 um 23:36 hat Eric Blake geschrieben: > > @@ -17,7 +14,7 @@ qemu-io: can't open device TEST_DIR/t.qcow2: Could not open backing file: Unknow > > no file open, try 'help open' > > read 4096/4096 bytes at offset 0 > > 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) > > -qemu-img: warning: Deprecated use of backing file without explicit backing format, use of this image requires potentially unsafe format probing > > +qemu-img: Could not change the backing file to '/home/eblake/qemu/build/tests/qemu-iotests/scratch/t.qcow2.base': Invalid argument > > read 4096/4096 bytes at offset 0 > > 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) > > This is not exactly an improvement for the error message. Maybe worth a > follow-up patch? Sure, will do. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org