From patchwork Wed Jul 27 07:01:43 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Changlong Xie X-Patchwork-Id: 9249293 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id BC6B76077C for ; Wed, 27 Jul 2016 07:01:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC86427BE5 for ; Wed, 27 Jul 2016 07:01:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A0DD927BF9; Wed, 27 Jul 2016 07:01:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 5D3FC27BE5 for ; Wed, 27 Jul 2016 07:01:52 +0000 (UTC) Received: from localhost ([::1]:44386 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSIql-0006b9-Jp for patchwork-qemu-devel@patchwork.kernel.org; Wed, 27 Jul 2016 03:01:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35803) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSIln-0001vV-T6 for qemu-devel@nongnu.org; Wed, 27 Jul 2016 02:56:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bSIll-0003zh-P7 for qemu-devel@nongnu.org; Wed, 27 Jul 2016 02:56:42 -0400 Received: from [59.151.112.132] (port=38781 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSIlh-0003vt-37; Wed, 27 Jul 2016 02:56:37 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="9142286" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 27 Jul 2016 14:56:23 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (unknown [10.167.33.85]) by cn.fujitsu.com (Postfix) with ESMTP id 05F0F4295FBE; Wed, 27 Jul 2016 14:56:24 +0800 (CST) Received: from changlox.g08.fujitsu.local (10.167.225.55) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.279.2; Wed, 27 Jul 2016 14:56:23 +0800 From: Changlong Xie To: qemu devel , qemu block , Stefan Hajnoczi , Fam Zheng , Max Reitz , Kevin Wolf , Jeff Cody Date: Wed, 27 Jul 2016 15:01:43 +0800 Message-ID: <1469602913-20979-3-git-send-email-xiecl.fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1469602913-20979-1-git-send-email-xiecl.fnst@cn.fujitsu.com> References: <1469602913-20979-1-git-send-email-xiecl.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.225.55] X-yoursite-MailScanner-ID: 05F0F4295FBE.A2390 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: xiecl.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Subject: [Qemu-devel] [PATCH v24 02/12] Backup: clear all bitmap when doing block checkpoint X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Changlong Xie , Wang Weiwei , zhanghailiang , Jiang Yunhong , Dong Eddie , Markus Armbruster , "Dr. David Alan Gilbert" , Gonglei , Paolo Bonzini , John Snow Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Wen Congyang Signed-off-by: Wen Congyang Signed-off-by: Changlong Xie Signed-off-by: Wang WeiWei Signed-off-by: zhanghailiang Signed-off-by: Gonglei Reviewed-by: Stefan Hajnoczi Tested-by: Kashyap Chamarthy --- block/backup.c | 18 ++++++++++++++++++ include/block/block_backup.h | 25 +++++++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100644 include/block/block_backup.h diff --git a/block/backup.c b/block/backup.c index 2c05323..3bce416 100644 --- a/block/backup.c +++ b/block/backup.c @@ -17,6 +17,7 @@ #include "block/block.h" #include "block/block_int.h" #include "block/blockjob.h" +#include "block/block_backup.h" #include "qapi/error.h" #include "qapi/qmp/qerror.h" #include "qemu/ratelimit.h" @@ -253,6 +254,23 @@ static void backup_attached_aio_context(BlockJob *job, AioContext *aio_context) blk_set_aio_context(s->target, aio_context); } +void backup_do_checkpoint(BlockJob *job, Error **errp) +{ + BackupBlockJob *backup_job = container_of(job, BackupBlockJob, common); + int64_t len; + + assert(job->driver->job_type == BLOCK_JOB_TYPE_BACKUP); + + if (backup_job->sync_mode != MIRROR_SYNC_MODE_NONE) { + error_setg(errp, "The backup job only supports block checkpoint in" + " sync=none mode"); + return; + } + + len = DIV_ROUND_UP(backup_job->common.len, backup_job->cluster_size); + bitmap_zero(backup_job->done_bitmap, len); +} + static const BlockJobDriver backup_job_driver = { .instance_size = sizeof(BackupBlockJob), .job_type = BLOCK_JOB_TYPE_BACKUP, diff --git a/include/block/block_backup.h b/include/block/block_backup.h new file mode 100644 index 0000000..157596c --- /dev/null +++ b/include/block/block_backup.h @@ -0,0 +1,25 @@ +/* + * QEMU backup + * + * Copyright (c) 2013 Proxmox Server Solutions + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * Copyright (c) 2016 Intel Corporation + * Copyright (c) 2016 FUJITSU LIMITED + * + * Authors: + * Dietmar Maurer + * Changlong Xie + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef BLOCK_BACKUP_H +#define BLOCK_BACKUP_H + +#include "block/block_int.h" + +void backup_do_checkpoint(BlockJob *job, Error **errp); + +#endif