From patchwork Tue Aug 24 07:41:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 12454121 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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 7965FC4320A for ; Tue, 24 Aug 2021 07:42:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62A5061026 for ; Tue, 24 Aug 2021 07:42:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235535AbhHXHnX (ORCPT ); Tue, 24 Aug 2021 03:43:23 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:55618 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235433AbhHXHmD (ORCPT ); Tue, 24 Aug 2021 03:42:03 -0400 Received: from imap1.suse-dmz.suse.de (imap1.suse-dmz.suse.de [192.168.254.73]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 28FB120042 for ; Tue, 24 Aug 2021 07:41:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1629790873; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=bnnxj4eq5QsHHidub5oQKGfXxeNLydmqIrPiz1ocbnA=; b=Oix4DjM6H0NjG9SLQ8X5FS+DDYPRbbybqy0AbpEjUT1hZw9tZxVbz2xHBCUK4REoZNS/wg 2L2lx416GrJZTODTRfovxvaLiwE2UohmKXiBvhwOJhHqS/KU8kWZSGewAJNxOR9/3FKWtu Mu0D4MjkdGqCfnpBHjUIXzpwgYpBEQ4= Received: from imap1.suse-dmz.suse.de (imap1.suse-dmz.suse.de [192.168.254.73]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap1.suse-dmz.suse.de (Postfix) with ESMTPS id 1C34A13942 for ; Tue, 24 Aug 2021 07:41:11 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap1.suse-dmz.suse.de with ESMTPSA id kQtRLpeiJGF8bwAAGKfGzw (envelope-from ) for ; Tue, 24 Aug 2021 07:41:11 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH v7 0/4] btrfs-progs: image: new data dump feature Date: Tue, 24 Aug 2021 15:41:04 +0800 Message-Id: <20210824074108.44759-1-wqu@suse.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This patchset includes the following features: - Introduce data dump feature to dump the whole fs. This will introduce a new magic number to prevent old btrfs-image to hit failure as the item size limit is enlarged. Patch 1 and 2. - Reduce memory usage for compressed data dump restore This is mostly due to the fact that we have much larger max_pending_size introduced by data dump(256K -> 256M). Using 4 * max_pending_size for each decompress thread as buffer is way too expensive now. Use proper inflate() to replace uncompress() calls. Patch 3 - A fix for small dev extent size mismatch with superblock This no longer affects single device dump restore, thus it's only for multi-device dump restore. Patch 4 Changelog: v2: - New small fixes: * Fix a confusing error message due to unpopulated errno * Output error message for chunk tree build error - Fix a regression of previous version Patch "btrfs-progs: image: Rework how we search chunk tree blocks" deleted a "ret = 0" line which could cause false early exit. - Reduce memory usage for data dump v2.1: - Rebased to devel branch Removing 4 already merged patches from the patchset. - Re-order the patchset Put small and independent patches at the top of queue, and put the data dump related feature at the end. - Fix -Wmaybe-uninitialized warnings Strangely, D=1 won't trigger these warnings thus they sneak into v2 without being detected. - Fix FROM: line Reverted to old smtp setup. The new setup will override FROM: line, messing up the name of author. v3: - Fix a wrong option in error string - Fix a bug that we always dump data extents v4: - Rebased to latest devel branch - Add a new small fix to kill the tiny dev extent size mismatch. v5: - Rebased to latest devel branch - Checkpatch fixes v6: - Rebased to latest devel branch No conflicts at all. v7: - Rebased to latest devel branch No conflicts at all. - Hide the data dump feature behind the experimental features Now to make "btrfs-image -d" work, one must enable experimental features, or "btrfs-image -d" will only output an error message. And if experimental features are not enabled, the new header format will also be disabled, so that btrfs-image can't detect the new format either. Although the "-d" option is still enabled for the non-experimental build. This only affects the 2nd patch, the remaining patches are not touched. Qu Wenruo (4): btrfs-progs: image: introduce framework for more dump versions btrfs-progs: image: introduce -d option to dump data btrfs-progs: image: reduce memory requirement for decompression btrfs-progs: image: fix restored image size misalignment image/main.c | 358 ++++++++++++++++++++++++++++++++++------------- image/metadump.h | 12 +- 2 files changed, 273 insertions(+), 97 deletions(-)