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190b9a8b55
This commit introduces six replication interfaces(for block, network etc). Firstly we can use replication_(new/remove) to create/destroy replication instances, then in migration we can use replication_(start/stop/do_checkpoint /get_error)_all to handle all replication operations. More detail please refer to replication.h 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> Message-id: 1469602913-20979-9-git-send-email-xiecl.fnst@cn.fujitsu.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/*
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* Replication filter
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*
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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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* Author:
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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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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "replication.h"
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static QLIST_HEAD(, ReplicationState) replication_states;
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ReplicationState *replication_new(void *opaque, ReplicationOps *ops)
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{
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ReplicationState *rs;
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assert(ops != NULL);
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rs = g_new0(ReplicationState, 1);
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rs->opaque = opaque;
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rs->ops = ops;
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QLIST_INSERT_HEAD(&replication_states, rs, node);
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return rs;
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}
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void replication_remove(ReplicationState *rs)
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{
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if (rs) {
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QLIST_REMOVE(rs, node);
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g_free(rs);
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}
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}
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/*
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* The caller of the function MUST make sure vm stopped
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*/
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void replication_start_all(ReplicationMode mode, Error **errp)
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{
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ReplicationState *rs, *next;
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Error *local_err = NULL;
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QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
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if (rs->ops && rs->ops->start) {
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rs->ops->start(rs, mode, &local_err);
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}
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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}
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}
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void replication_do_checkpoint_all(Error **errp)
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{
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ReplicationState *rs, *next;
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Error *local_err = NULL;
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QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
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if (rs->ops && rs->ops->checkpoint) {
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rs->ops->checkpoint(rs, &local_err);
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}
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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}
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}
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void replication_get_error_all(Error **errp)
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{
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ReplicationState *rs, *next;
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Error *local_err = NULL;
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QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
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if (rs->ops && rs->ops->get_error) {
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rs->ops->get_error(rs, &local_err);
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}
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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}
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}
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void replication_stop_all(bool failover, Error **errp)
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{
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ReplicationState *rs, *next;
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Error *local_err = NULL;
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QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
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if (rs->ops && rs->ops->stop) {
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rs->ops->stop(rs, failover, &local_err);
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}
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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}
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}
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