From nobody Wed Nov 12 13:16:21 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1571392825; cv=none; d=zoho.com; s=zohoarc; b=QavjIMDxHIoUuhXPUTAdNnbIWtJ1iLFTx42vD85Q3axxsR4viETD+RT1mtvtwk7lPwUsZCjO+ktJNpl82HMwepIfnfUPbAcG7lBx87HbMDQOjKEKkOz/KW55Ylh/cbDWZlmr+jKdNmUnx+/qlc08PGfLbTP3sgcLVRKNK39IHJw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1571392825; h=Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=BqfS4DIDqbq3DSs7AKX3BxTOln5Kb7EHyzJ5XLzJmlw=; b=Hx4LZkMghbWjH6gJrRoxuHq+yAbZqO34OOZABDmHKedXe06GGsKhXa5RnG+WckSuYf7HFVSJF3Oglkdrm/9B3vQRU2M9QYoyC/p47/yNudRRQ+Ecn08FEdH5EOYaEFGhFQ6LFTNm09JsY9/WueCC/S7x4lmcYdAZFBlh1fsHtHM= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1571392825400612.4206368170182; Fri, 18 Oct 2019 03:00:25 -0700 (PDT) Received: from localhost ([::1]:37406 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLP3O-0006nI-Vw for importer@patchew.org; Fri, 18 Oct 2019 06:00:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50793) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLP2Q-0006He-BY for qemu-devel@nongnu.org; Fri, 18 Oct 2019 05:59:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iLP2N-0001Jw-Dl for qemu-devel@nongnu.org; Fri, 18 Oct 2019 05:59:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:29836) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iLP2N-0001JT-8S for qemu-devel@nongnu.org; Fri, 18 Oct 2019 05:59:11 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AC0943001FEB for ; Fri, 18 Oct 2019 09:59:08 +0000 (UTC) Received: from hansolo.pek2.redhat.com (wlc-trust-29.pek2.redhat.com [10.72.3.29]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1F7CA5D9CA; Fri, 18 Oct 2019 09:59:06 +0000 (UTC) From: Han Han To: qemu-devel@nongnu.org Subject: [PATCH] qemu-img.texi: Describe data_file and data_file_raw Date: Fri, 18 Oct 2019 17:59:24 +0800 Message-Id: <20191018095924.4409-1-hhan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Fri, 18 Oct 2019 09:59:08 +0000 (UTC) Content-Transfer-Encoding: quoted-printable 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: , Cc: Han Han Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" https://bugzilla.redhat.com/show_bug.cgi?id=3D1763105 Signed-off-by: Han Han Reviewed-by: Eric Blake --- qemu-img.texi | 10 ++++++++++ 1 file changed, 10 insertions(+) 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 coul= dn't be changed to NOCOW by setting @code{nocow=3Don}. One can issue @code{lsattr filename} to chec= k if the NOCOW flag is set or not (Capital 'C' is NOCOW flag). =20 +@item data_file +File name of data file that is stored in the image and used as a default f= or +opening the image. If the option is used, qcow2 file only stores the metad= ata +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 =20 @item Other --=20 2.20.1