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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 92468C3A5A2 for ; Fri, 23 Aug 2019 23:01:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 333F82133F for ; Fri, 23 Aug 2019 23:01:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=permerror (0-bit key) header.d=manuel-bentele.de header.i=@manuel-bentele.de header.b="E46gHQ43" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726992AbfHWXBp (ORCPT ); Fri, 23 Aug 2019 19:01:45 -0400 Received: from host1.nc.manuel-bentele.de ([92.60.37.180]:55818 "EHLO host1.nc.manuel-bentele.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726369AbfHWXBp (ORCPT ); Fri, 23 Aug 2019 19:01:45 -0400 X-Greylist: delayed 324 seconds by postgrey-1.27 at vger.kernel.org; Fri, 23 Aug 2019 19:01:44 EDT Received: from localhost (localhost [127.0.0.1]) (Authenticated sender: development@manuel-bentele.de) by host1.nc.manuel-bentele.de (Postcow) with ESMTPSA id 45EFA641F7; Sat, 24 Aug 2019 00:56:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=manuel-bentele.de; s=dkim; t=1566600982; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=aKfiPT0IqKfA9/aUidgAcWmdM9saHX+JVXPQsBjmxeA=; b=E46gHQ43qUwLJvSKx2QrjXNDt0/CkdVguii6iZKYtH0Tw5Yj79NN3iTKY3ZTlBY6AHCfis zM65CCeUsBF7zW3EPZXfz+pSkNLkKeq9eRwfG5+0JsckZAcYeE/+q6lRu+ZQhhrQTw0gIN bLukr48pI1LikdKHybRDvXD65sV8knjw+DwXDV8ksVgMlrICbC3em+3TZl8dFAicsVw22r B/++NHcwUODAg12+Kasf0WfWaY1w2KQsjOx+OFbQaRgZtlXGLSUhCKPKzoiOeBbobCjuxz HtDpNQpdS/kHsRKO43bj+XXe8YHvVtYG+ceIYG/f6Zrqe3QQBUboWSTLVn0lgA== From: development@manuel-bentele.de To: linux-block@vger.kernel.org Cc: Manuel Bentele Subject: [PATCH 5/5] doc: admin-guide: add QCOW2 file format to loop device documentation Date: Sat, 24 Aug 2019 00:56:19 +0200 Message-Id: <20190823225619.15530-6-development@manuel-bentele.de> In-Reply-To: <20190823225619.15530-1-development@manuel-bentele.de> References: <20190823225619.15530-1-development@manuel-bentele.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=manuel-bentele.de; s=dkim; t=1566600982; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=aKfiPT0IqKfA9/aUidgAcWmdM9saHX+JVXPQsBjmxeA=; b=bsP+PfwN9hvCP+PWn5EoR8NEZDX+DOA+wsvib4IH0FvLo8Kxf9WBEj6cy4yOnDKjahi8Gn 0Z8JHliPk7NvNPd7uY+PAqtRsHTeTV+wQgTDXTCofCyIy9ZvWoxn241+quugUunTHbmAjC imf+v9ATP9fAqu6tPMjuCVwpvq07UJ+DeLRhgtvWonn21nRwmGo/HFY4sn3uXrTTWZqYpq 96waZRaltkeHHyYmAJR093vbssj2jNrZo57wMP7BPH/kOAxCiOAbqkY/qcR3D2TGOA39Wo VYWt8MVvV1o7weCBv9u2hJEmPUgYY9yzt5gNb25+xJrFhM0vkuh0MdnE4qVilg== ARC-Seal: i=1; s=dkim; d=manuel-bentele.de; t=1566600982; a=rsa-sha256; cv=none; b=mGpgmBdGnFEf0zNtuBd2Dcb+0E/VISiEv1KHcJjf9x5F/9jn3zwxZBRuIVbo+jc44eMrnj EM8kp3cJ57+LSOUxuRJqCujBizT4SpjaVXv9zVMx0PupV+JxcLPP5YkdfTEdarzHeWwwxD o/WrSIfm6vB9TS2OnfwQoZ6kI2tEB3+iYzqSrYKx7SIOgtiFZ89tyBMZO4qsFNXxwa3QCt F7ctIpDa+ARRbSzUi4C1RsrwzqwH6KFHCjKkYHZVqO2si3XZHv7Fp+qwso5xQ+f0R9tDou RBmx16g+vodZ7WEUOdBa4ljkCXtEkk0Abv7qO1LvbVbLeMC8rMXJP+W+3LtxSw== ARC-Authentication-Results: i=1; host1.nc.manuel-bentele.de; auth=pass smtp.auth=development@manuel-bentele.de smtp.mailfrom=development@manuel-bentele.de Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Manuel Bentele The existing documentation about the loop block device is extended by a section about the QCOW2 file format driver. The documentation is written in the reST kernel documentation format. Signed-off-by: Manuel Bentele --- Documentation/admin-guide/blockdev/loop.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/admin-guide/blockdev/loop.rst b/Documentation/admin-guide/blockdev/loop.rst index 69d8172c85db..3a5897a14c8b 100644 --- a/Documentation/admin-guide/blockdev/loop.rst +++ b/Documentation/admin-guide/blockdev/loop.rst @@ -72,3 +72,14 @@ image file. It supports discarding, asynchrounous IO, flushing and cryptoloop support. The driver's kernel module is named *loop_file_fmt_raw*. + + +QCOW +~~~~ + +The QCOW file format driver implements QEMU's copy on write file format in +version 2. At the moment, the file format driver only supports the reading +of QCOW2 disk image files. It does not support writing to QCOW2 images, the +recovery of broken QCOW images, snapshots and reference counts. + +The driver's kernel module is named *loop_file_fmt_qcow*. -- 2.23.0