From patchwork Mon Oct 21 01:07:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Han Han X-Patchwork-Id: 1180148 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="Fwkhc3tL"; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 46xJS46c6mz9sPT for ; Mon, 21 Oct 2019 12:08:52 +1100 (AEDT) Received: from localhost ([::1]:54454 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMMBm-0000bg-Mc for incoming@patchwork.ozlabs.org; Sun, 20 Oct 2019 21:08:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45175) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMMAJ-0000Ps-Aw for qemu-devel@nongnu.org; Sun, 20 Oct 2019 21:07:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iMMAI-0001OQ-89 for qemu-devel@nongnu.org; Sun, 20 Oct 2019 21:07:19 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:38533 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iMMAI-0001OJ-4i for qemu-devel@nongnu.org; Sun, 20 Oct 2019 21:07:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571620037; 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=hvPOC83TFmIPkNxqxmDoKWdTzvISl7j/eoqdVERqfbQ=; b=Fwkhc3tL/rD3duFjUXyK4mB4QfzKnxebRbs6jL38gozrORkPGtN3rz7AJWphMLIo7MBUKd pDj7OBb/epHXSR9UENwoqjQZVmtdjCzlrJf88kv8N3kDsvbSeajZrF+sLL6q3mPT0mbSt6 SoQHrEidMXBeFKiyX/+JEj75FVsVTy4= 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-161-vx2Smd1CMzCvpXSVWM-Fag-1; Sun, 20 Oct 2019 21:07:14 -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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 804DD47B; Mon, 21 Oct 2019 01:07:13 +0000 (UTC) Received: from hansolo.nay.redhat.com (unknown [10.66.4.171]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3E0425D9D6; Mon, 21 Oct 2019 01:07:11 +0000 (UTC) From: Han Han To: qemu-devel@nongnu.org Subject: [PATCH v2] qemu-img.texi: Describe data_file and data_file_raw Date: Mon, 21 Oct 2019 09:07:15 +0800 Message-Id: <20191021010714.24060-1-hhan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: vx2Smd1CMzCvpXSVWM-Fag-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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 , qemu-block@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" https://bugzilla.redhat.com/show_bug.cgi?id=1763105 Signed-off-by: Han Han --- qemu-img.texi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/qemu-img.texi b/qemu-img.texi index b5156d6316..983c6122f8 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 +for 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