From patchwork Fri Jul 10 12:17:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 11656449 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3503092A for ; Fri, 10 Jul 2020 12:18:09 +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 0A07420720 for ; Fri, 10 Jul 2020 12:18:09 +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="a1NOfoLe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0A07420720 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:41420 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jtryi-0003pt-CA for patchwork-qemu-devel@patchwork.kernel.org; Fri, 10 Jul 2020 08:18:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33260) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jtry4-0003JL-9i for qemu-devel@nongnu.org; Fri, 10 Jul 2020 08:17:28 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:36234 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jtry0-000242-6B for qemu-devel@nongnu.org; Fri, 10 Jul 2020 08:17:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1594383443; 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; bh=Vei0SeYgSo+k8RDJISsuBk8eEp+SxIoByu+nuJsGaJg=; b=a1NOfoLerKjfhFs/QxqMWa045Keji+LepLHTp2Fj1qLlT0e0ewzH9et8DSHuYG6lmQnQjg VOn5IoVlmqdrS4hKpWw6R4ObQ4oVqtIabpCfCiLKk/c0SnNpC9JoSS62a/Xe5uVD3e36Q+ 9/+kESVxYiF+pRjGsA4My6AIGnY+CEI= 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-422-NeyeCKh3PFSAdZvavo2Aag-1; Fri, 10 Jul 2020 08:17:21 -0400 X-MC-Unique: NeyeCKh3PFSAdZvavo2Aag-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CF1DF8015F3; Fri, 10 Jul 2020 12:17:20 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-114-57.ams2.redhat.com [10.36.114.57]) by smtp.corp.redhat.com (Postfix) with ESMTP id 90EBB7EF8F; Fri, 10 Jul 2020 12:17:19 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH for-5.1] qemu-img resize: Require --shrink for shrinking all image formats Date: Fri, 10 Jul 2020 14:17:17 +0200 Message-Id: <20200710121717.28339-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.61; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/09 22:08:55 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, 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: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" QEMU 2.11 introduced the --shrink option for qemu-img resize to avoid accidentally shrinking images (commit 4ffca8904a3). However, for compatibility reasons, it was not enforced for raw images yet, but only a deprecation warning was printed. This warning has existed for long enough that we can now finally require --shrink for raw images, too, and error out if it's not given. Documentation already describes the state as it is after this patch. Signed-off-by: Kevin Wolf Reviewed-by: Daniel P. Berrangé --- qemu-img.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/qemu-img.c b/qemu-img.c index e3b2ec3e78..f6a2703039 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -4011,20 +4011,9 @@ static int img_resize(int argc, char **argv) } if (total_size < current_size && !shrink) { - warn_report("Shrinking an image will delete all data beyond the " - "shrunken image's end. Before performing such an " - "operation, make sure there is no important data there."); - - if (g_strcmp0(bdrv_get_format_name(blk_bs(blk)), "raw") != 0) { - error_report( - "Use the --shrink option to perform a shrink operation."); - ret = -1; - goto out; - } else { - warn_report("Using the --shrink option will suppress this message. " - "Note that future versions of qemu-img may refuse to " - "shrink images without this option."); - } + error_report("Use the --shrink option to perform a shrink operation."); + ret = -1; + goto out; } /*