From patchwork Tue Sep 29 12:38:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Denis V. Lunev\" via" X-Patchwork-Id: 11805751 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2D4E26CA for ; Tue, 29 Sep 2020 12:45:03 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C8FAC2064E for ; Tue, 29 Sep 2020 12:45:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C8FAC2064E Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=nongnu.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:47136 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kNF09-0003FD-Gl for patchwork-qemu-devel@patchwork.kernel.org; Tue, 29 Sep 2020 08:45:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52860) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNEuN-0005Na-Jg; Tue, 29 Sep 2020 08:39:03 -0400 Received: from relay.sw.ru ([185.231.240.75]:34360 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNEuK-0000IH-6t; Tue, 29 Sep 2020 08:39:02 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.94) (envelope-from ) id 1kNEtg-002EOe-Lw; Tue, 29 Sep 2020 15:38:20 +0300 To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, kwolf@redhat.com, mreitz@redhat.com, stefanha@redhat.com, fam@euphon.net, jsnow@redhat.com, armbru@redhat.com, eblake@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com Subject: [PATCH v10 0/9] Apply COR-filter to the block-stream permanently Date: Tue, 29 Sep 2020 15:38:20 +0300 Message-Id: <1601383109-110988-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/29 08:38:56 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: Andrey Shinkevich X-Patchwork-Original-From: Andrey Shinkevich via From: "Denis V. Lunev\" via" Despite the patch "freeze link to base node..." has been removed from the series in the current version 9, the iotest case test_stream_parallel does not pass after the COR-filter is inserted into the backing chain. As the test case may not be initialized, it does not make a sense and was removed again. The check with bdrv_is_allocated_above() takes place in the COR-filter and in the block-stream job both. An optimization of the block-stream job based on the filter functionality may be made in a separate series. v10: 02: The missed new file block/copy-on-read.h added v9: 02: Refactored. 04: Base node name is used instead of the file name. 05: New implementation based on Max' review. 06: New. 07: New. The patch "freeze link to base node..." was deleted. 08: New. 09: The filter node options are initialized. The v8 Message-Id: <1598633579-221780-1-git-send-email-andrey.shinkevich@virtuozzo.com> Andrey Shinkevich (9): copy-on-read: Support preadv/pwritev_part functions copy-on-read: add filter append/drop functions qapi: add filter-node-name to block-stream copy-on-read: pass base node name to COR driver copy-on-read: limit guest COR activity to base in COR driver copy-on-read: skip non-guest reads if no copy needed stream: skip filters when writing backing file name to QCOW2 header block: remove unused backing-file name parameter block: apply COR-filter to block-stream jobs block/copy-on-read.c | 165 ++++++++++++++++++++++++++++++++++++++--- block/copy-on-read.h | 35 +++++++++ block/io.c | 2 +- block/monitor/block-hmp-cmds.c | 6 +- block/stream.c | 112 +++++++++++++++++----------- blockdev.c | 21 +----- include/block/block_int.h | 9 ++- qapi/block-core.json | 23 ++---- tests/qemu-iotests/030 | 51 ++----------- tests/qemu-iotests/030.out | 4 +- tests/qemu-iotests/141.out | 2 +- tests/qemu-iotests/245 | 19 +++-- 12 files changed, 302 insertions(+), 147 deletions(-) create mode 100644 block/copy-on-read.h