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=-8.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 CCEE5C55179 for ; Wed, 21 Oct 2020 15:12:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 632052237B for ; Wed, 21 Oct 2020 15:12:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="sjFBa4jL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2444077AbgJUPMG (ORCPT ); Wed, 21 Oct 2020 11:12:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2444029AbgJUPMG (ORCPT ); Wed, 21 Oct 2020 11:12:06 -0400 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19B7EC0613CE; Wed, 21 Oct 2020 08:12:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:To:Subject:Sender: Reply-To:Cc:Content-ID:Content-Description; bh=QRmeq+WhhmJFQx9ptzkESWhLkZL0448bxepNUGUOWXM=; b=sjFBa4jL1qJ+CEJeH03Xwxxk6e kuNFWgpIshoWVHEx/rq5Jx9hLUNKt/gdaTaUGZQLnFS2ETWD6gd417JHritOq1mzxCaLbV29n5Aoi 2FAs94ESvUe8q1G9lCdeKgB3zPw/Ve2EBKfeN8+sALcVjdAY4090snwd+T/V3umbd0IMWT+lfo/DR 4OECSXEF1A/MhrpaIoG/8dZcG1JZQH7CDN3IEeYBy4cvu/e1z1vqraOFlwQ3p0j8HS6vDjmMhoMnB hRyiuMSHHeLbr3n+EBgGHmZVPdNsRcE4t26ZtnopA6lMEoCLsHnQcJeHcyctFKwCzEDkUDS6DvsMA kh7Tjo6w==; Received: from [2601:1c0:6280:3f0::507c] by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kVFmU-0003zU-Dg; Wed, 21 Oct 2020 15:12:02 +0000 Subject: Re: [PATCH 2/2] blk-snap - snapshots and change-tracking for block devices To: Sergei Shtepa , axboe@kernel.dk, viro@zeniv.linux.org.uk, hch@infradead.org, darrick.wong@oracle.com, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, rjw@rjwysocki.net, len.brown@intel.com, pavel@ucw.cz, akpm@linux-foundation.org, johannes.thumshirn@wdc.com, ming.lei@redhat.com, jack@suse.cz, tj@kernel.org, gustavo@embeddedor.com, bvanassche@acm.org, osandov@fb.com, koct9i@gmail.com, damien.lemoal@wdc.com, steve@sk2.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-mm@kvack.org References: <1603271049-20681-1-git-send-email-sergei.shtepa@veeam.com> <1603271049-20681-3-git-send-email-sergei.shtepa@veeam.com> From: Randy Dunlap Message-ID: Date: Wed, 21 Oct 2020 08:11:53 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <1603271049-20681-3-git-send-email-sergei.shtepa@veeam.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 10/21/20 2:04 AM, Sergei Shtepa wrote: > diff --git a/drivers/block/blk-snap/Kconfig b/drivers/block/blk-snap/Kconfig > new file mode 100644 > index 000000000000..7a2db99a80dd > --- /dev/null > +++ b/drivers/block/blk-snap/Kconfig > @@ -0,0 +1,24 @@ > +# SPDX-License-Identifier: GPL-2.0 > +# > +# blk-snap block io layer filter module configuration > +# > +# > +#select BLK_FILTER > + > +config BLK_SNAP > + tristate "Block device snapshot filter" > + depends on BLK_FILTER > + help > + No blank line here. > + Allow to create snapshots and track block changes for a block for block > + devices. Designed for creating backups for any block devices > + (without device mapper). Snapshots are temporary and are released > + then backup is completed. Change block tracking allows you to when > + create incremental or differential backups. > + > +config BLK_SNAP_SNAPSTORE_MULTIDEV > + bool "Multi device snapstore configuration support" > + depends on BLK_SNAP > + help > + No blank line here. > + Allow to create snapstore on multiple block devices. thanks. -- ~Randy