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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 9821DCA9EA0 for ; Fri, 18 Oct 2019 14:15:42 +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 6B84C21925 for ; Fri, 18 Oct 2019 14:15:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B84C21925 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]:40718 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLT2b-0001UY-Gf for qemu-devel@archiver.kernel.org; Fri, 18 Oct 2019 10:15:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59065) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLT14-0008V9-Sp for qemu-devel@nongnu.org; Fri, 18 Oct 2019 10:14:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iLT13-0000eA-8n for qemu-devel@nongnu.org; Fri, 18 Oct 2019 10:14:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57202) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iLT0w-0000c1-BT; Fri, 18 Oct 2019 10:13:59 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id 4760E3082B02; Fri, 18 Oct 2019 14:13:57 +0000 (UTC) Received: from [10.3.116.168] (ovpn-116-168.phx2.redhat.com [10.3.116.168]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E4C7E10013A1; Fri, 18 Oct 2019 14:13:56 +0000 (UTC) Subject: Re: [PATCH] qemu-img.texi: Describe data_file and data_file_raw To: Han Han , qemu-devel@nongnu.org, "qemu-block@nongnu.org" , Kevin Wolf References: <20191018095924.4409-1-hhan@redhat.com> From: Eric Blake Organization: Red Hat, Inc. Message-ID: Date: Fri, 18 Oct 2019 09:13:56 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20191018095924.4409-1-hhan@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Fri, 18 Oct 2019 14:13:57 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" [cc qemu-block] On 10/18/19 4:59 AM, Han Han wrote: > https://bugzilla.redhat.com/show_bug.cgi?id=1763105 > > Signed-off-by: Han Han > --- > qemu-img.texi | 10 ++++++++++ > 1 file changed, 10 insertions(+) > Reviewed-by: Eric Blake > diff --git a/qemu-img.texi b/qemu-img.texi > index b5156d6316..44596c2d93 100644 > --- a/qemu-img.texi > +++ b/qemu-img.texi > @@ -763,6 +763,16 @@ file which is COW and has data blocks already, it couldn't be changed to NOCOW > by setting @code{nocow=on}. One can issue @code{lsattr filename} to check if > the NOCOW flag is set or not (Capital 'C' is NOCOW flag). > > +@item data_file > +File name of data file that is stored in the image and used as a default for > +opening the image. If the option is used, qcow2 file only stores the metadata > +of the image. > + > +@item data_file_raw > +This option requires @option{data_file}. If this option is set to @code{on}, > +qemu will always keep the external data file consistent as a standalone > +read-only raw image. Default value is @code{off}. > + > @end table > > @item Other > -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org