Commit 49d3e828 authored by Wen Congyang's avatar Wen Congyang Committed by Stefan Hajnoczi
Browse files

Backup: clear all bitmap when doing block checkpoint 



Signed-off-by: default avatarWen Congyang <wency@cn.fujitsu.com>
Signed-off-by: default avatarChanglong Xie <xiecl.fnst@cn.fujitsu.com>
Signed-off-by: default avatarWang WeiWei <wangww.fnst@cn.fujitsu.com>
Signed-off-by: default avatarzhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: default avatarGonglei <arei.gonglei@huawei.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Message-id: 1469602913-20979-3-git-send-email-xiecl.fnst@cn.fujitsu.com
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent e9d6456e

block/backup.c

+18 −0
Original line number Diff line number Diff line
@@ -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"
@@ -255,6 +256,23 @@ 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,

include/block/block_backup.h

0 → 100644
+25 −0
Original line number Diff line number Diff line 
/*

 * 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 <dietmar@proxmox.com>

 *  Changlong Xie <xiecl.fnst@cn.fujitsu.com>

 *

 * 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