From patchwork Fri Nov 24 16:59:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Shtepa X-Patchwork-Id: 169529 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:ce62:0:b0:403:3b70:6f57 with SMTP id o2csp1371312vqx; Fri, 24 Nov 2023 09:02:38 -0800 (PST) X-Google-Smtp-Source: AGHT+IHRFxTRIEKcVJYbfmDQmObTUPuvmGuXWN5JDL9PYzo0aJbfQ741XzhYTBEcayhOl131aQk2 X-Received: by 2002:a05:6808:3386:b0:3b8:3e7d:db75 with SMTP id ce6-20020a056808338600b003b83e7ddb75mr4058577oib.55.1700845358399; Fri, 24 Nov 2023 09:02:38 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1700845358; cv=none; d=google.com; s=arc-20160816; b=tNdiykJ87R4U8CrdKoHFAelHvsT+4p/BqLI6XGsIzRPbHmktAgENKEEQ8oSHaAl78d ThXkeWA+AruHGPAvns/MUJnr8n/ISTiYIaWfFa4xXjJMk44g1NF+gS4XuQaKzQQ5Njt5 HjmnWvgEUBhCpUTOde/DJ9axgLVGfWXfwtXVISgfjxncsJLg7FTLohtOEItp+c7y7Tcf +pgD8t+2TQlAoxhNuMjRCnd3rePKBKlZhWuyE7M3OGyEEZaelDW6oQbAGXoUpM0YuDMB SbdENI5Xqn5uxOVhLx0Uhgr0gTeZyghiLFQWPf6k2A5I/Mpq3+FAk0pijIREmZchKpp5 JQbQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=3H2EngB4IC7J9sBiro1fbNUKQKRJyLxYEzCizNHIL5o=; fh=2mCdnEsEQzaNNg7WB3fw4oVqqq+eEoqCz0tNA1gXC/4=; b=qYRykH9pW6oAje7RV89pS2DZxm7Q9lp3a6pfJHYWiPQpVoOhXq762GL4ReE7uhpD6N 2SbZp/FKdQLthQKdw0Nyx73jHnSc941G4WudxgkYFPKCzVdt+1PCxK7zcYWTAT4/0XMA c514HoayFy7dW2D3Edx72MkpQdv8W2/1wvZPqZCPGQRKBMYmr66wwj4GHA4l8emLST4Z VnwyN8Mj1bfaE2jpoVwDakoAYH0m+QUA4WviBfKlIJFGlvhLw7dzSvxSRa/exMv0icg5 UPP5+kKxZWxLVHpVTxBhyDVmMfrRjtOh1xvJjirlfD/pcAgaPYoqcsZsZeME6dvTNwvE IUDA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux.dev header.s=key1 header.b=Vz45gGWB; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.dev Received: from lipwig.vger.email (lipwig.vger.email. [2620:137:e000::3:3]) by mx.google.com with ESMTPS id s14-20020a05680810ce00b003afafb944aesi1662577ois.27.2023.11.24.09.02.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Nov 2023 09:02:38 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) client-ip=2620:137:e000::3:3; Authentication-Results: mx.google.com; dkim=pass header.i=@linux.dev header.s=key1 header.b=Vz45gGWB; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.dev Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by lipwig.vger.email (Postfix) with ESMTP id BD3D182B3DD2; Fri, 24 Nov 2023 09:02:07 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at lipwig.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232903AbjKXRBF (ORCPT + 99 others); Fri, 24 Nov 2023 12:01:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47276 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235292AbjKXRAZ (ORCPT ); Fri, 24 Nov 2023 12:00:25 -0500 Received: from out-173.mta0.migadu.com (out-173.mta0.migadu.com [IPv6:2001:41d0:1004:224b::ad]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69D3719BB; Fri, 24 Nov 2023 09:00:26 -0800 (PST) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1700845224; 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=3H2EngB4IC7J9sBiro1fbNUKQKRJyLxYEzCizNHIL5o=; b=Vz45gGWBhO5z+XKwoOw0E6D48Hta7AOYAEttidaa3w/z4W5sITlJaeXjSXd85Nt+hl3kCU aTXHFwqMqwV7hj0k8jUi9LEvpxFLXXr4H0TTC/BuUMrA9KKE5gAvN0U8zPgoak0/Y9qGD0 EHNGghNq4QYnKjn5s5T4+I7bOJV0p9k= From: Sergei Shtepa To: axboe@kernel.dk, hch@infradead.org, corbet@lwn.net, snitzer@kernel.org Cc: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, viro@zeniv.linux.org.uk, brauner@kernel.org, linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Sergei Shtepa Subject: [PATCH v6 10/11] blksnap: Kconfig and Makefile Date: Fri, 24 Nov 2023 17:59:32 +0100 Message-Id: <20231124165933.27580-11-sergei.shtepa@linux.dev> In-Reply-To: <20231124165933.27580-1-sergei.shtepa@linux.dev> References: <20231124165933.27580-1-sergei.shtepa@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Fri, 24 Nov 2023 09:02:07 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783465622512795405 X-GMAIL-MSGID: 1783465622512795405 From: Sergei Shtepa Allows to build a module and add the blksnap to the kernel tree. Co-developed-by: Christoph Hellwig Signed-off-by: Christoph Hellwig Signed-off-by: Sergei Shtepa --- drivers/block/Kconfig | 2 ++ drivers/block/Makefile | 2 ++ drivers/block/blksnap/Kconfig | 31 +++++++++++++++++++++++++++++++ drivers/block/blksnap/Makefile | 15 +++++++++++++++ 4 files changed, 50 insertions(+) create mode 100644 drivers/block/blksnap/Kconfig create mode 100644 drivers/block/blksnap/Makefile diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 5b9d4aaebb81..74d2d55526a3 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -404,4 +404,6 @@ config BLKDEV_UBLK_LEGACY_OPCODES source "drivers/block/rnbd/Kconfig" +source "drivers/block/blksnap/Kconfig" + endif # BLK_DEV diff --git a/drivers/block/Makefile b/drivers/block/Makefile index 101612cba303..9a2a9a56a247 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -40,3 +40,5 @@ obj-$(CONFIG_BLK_DEV_NULL_BLK) += null_blk/ obj-$(CONFIG_BLK_DEV_UBLK) += ublk_drv.o swim_mod-y := swim.o swim_asm.o + +obj-$(CONFIG_BLKSNAP) += blksnap/ diff --git a/drivers/block/blksnap/Kconfig b/drivers/block/blksnap/Kconfig new file mode 100644 index 000000000000..f52272c12e1b --- /dev/null +++ b/drivers/block/blksnap/Kconfig @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Block device snapshot module configuration +# + +config BLKSNAP + tristate "Block Devices Snapshots Module (blksnap)" + help + Allow to create snapshots and track block changes for block devices. + Designed for creating backups for block devices. Snapshots are + temporary and are released when backup is completed. Change block + tracking allows to create incremental or differential backups. + +config BLKSNAP_DIFF_BLKDEV + bool "Use an optimized algorithm to store difference on a block device" + depends on BLKSNAP + default y + help + The difference storage for a snapshot can be a regular file or a + block device. We can work with a block device through the interface + of a regular file. However, direct management of I/O units should + allow for higher performance. + +config BLKSNAP_CHUNK_DIFF_BIO_SYNC + bool "Use a synchronous I/O unit processing algorithm for the snapshot image" + depends on BLKSNAP + default n + help + Theoretical asynchronous algorithm for processing I/O units should + have higher performance. However, an attempt to confirm this on test + runs did not bring any results. diff --git a/drivers/block/blksnap/Makefile b/drivers/block/blksnap/Makefile new file mode 100644 index 000000000000..8d528b95579a --- /dev/null +++ b/drivers/block/blksnap/Makefile @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 + +blksnap-y := \ + cbt_map.o \ + chunk.o \ + diff_area.o \ + diff_buffer.o \ + diff_storage.o \ + event_queue.o \ + main.o \ + snapimage.o \ + snapshot.o \ + tracker.o + +obj-$(CONFIG_BLKSNAP) += blksnap.o