mirror of https://github.com/xemu-project/xemu.git
Backup: clear all bitmap when doing block checkpoint
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com> Signed-off-by: Wang WeiWei <wangww.fnst@cn.fujitsu.com> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1469602913-20979-3-git-send-email-xiecl.fnst@cn.fujitsu.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -17,6 +17,7 @@
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#include "block/block.h"
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#include "block/block_int.h"
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#include "block/blockjob.h"
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#include "block/block_backup.h"
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#include "qapi/error.h"
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#include "qapi/qmp/qerror.h"
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#include "qemu/ratelimit.h"
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@ -255,6 +256,23 @@ static void backup_attached_aio_context(BlockJob *job, AioContext *aio_context)
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blk_set_aio_context(s->target, aio_context);
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}
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void backup_do_checkpoint(BlockJob *job, Error **errp)
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{
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BackupBlockJob *backup_job = container_of(job, BackupBlockJob, common);
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int64_t len;
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assert(job->driver->job_type == BLOCK_JOB_TYPE_BACKUP);
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if (backup_job->sync_mode != MIRROR_SYNC_MODE_NONE) {
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error_setg(errp, "The backup job only supports block checkpoint in"
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" sync=none mode");
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return;
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}
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len = DIV_ROUND_UP(backup_job->common.len, backup_job->cluster_size);
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bitmap_zero(backup_job->done_bitmap, len);
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}
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static const BlockJobDriver backup_job_driver = {
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.instance_size = sizeof(BackupBlockJob),
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.job_type = BLOCK_JOB_TYPE_BACKUP,
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@ -0,0 +1,25 @@
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/*
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* QEMU backup
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*
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* Copyright (c) 2013 Proxmox Server Solutions
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* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
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* Copyright (c) 2016 Intel Corporation
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* Copyright (c) 2016 FUJITSU LIMITED
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*
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* Authors:
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* Dietmar Maurer <dietmar@proxmox.com>
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* Changlong Xie <xiecl.fnst@cn.fujitsu.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef BLOCK_BACKUP_H
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#define BLOCK_BACKUP_H
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#include "block/block_int.h"
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void backup_do_checkpoint(BlockJob *job, Error **errp);
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#endif
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