]> git.proxmox.com Git - mirror_qemu.git/blame - replication.c
block: Mark bdrv_filter_or_cow_bs() and callers GRAPH_RDLOCK
[mirror_qemu.git] / replication.c
CommitLineData
190b9a8b
CX
1/*
2 * Replication filter
3 *
4 * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
5 * Copyright (c) 2016 Intel Corporation
6 * Copyright (c) 2016 FUJITSU LIMITED
7 *
8 * Author:
9 * Changlong Xie <xiecl.fnst@cn.fujitsu.com>
10 *
11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
12 * See the COPYING file in the top-level directory.
13 */
14
15#include "qemu/osdep.h"
16#include "qapi/error.h"
b0262955 17#include "block/replication.h"
190b9a8b
CX
18
19static QLIST_HEAD(, ReplicationState) replication_states;
20
21ReplicationState *replication_new(void *opaque, ReplicationOps *ops)
22{
23 ReplicationState *rs;
24
25 assert(ops != NULL);
26 rs = g_new0(ReplicationState, 1);
27 rs->opaque = opaque;
28 rs->ops = ops;
29 QLIST_INSERT_HEAD(&replication_states, rs, node);
30
31 return rs;
32}
33
34void replication_remove(ReplicationState *rs)
35{
36 if (rs) {
37 QLIST_REMOVE(rs, node);
38 g_free(rs);
39 }
40}
41
42/*
43 * The caller of the function MUST make sure vm stopped
44 */
45void replication_start_all(ReplicationMode mode, Error **errp)
46{
47 ReplicationState *rs, *next;
48 Error *local_err = NULL;
49
50 QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
51 if (rs->ops && rs->ops->start) {
52 rs->ops->start(rs, mode, &local_err);
53 }
54 if (local_err) {
55 error_propagate(errp, local_err);
56 return;
57 }
58 }
59}
60
61void replication_do_checkpoint_all(Error **errp)
62{
63 ReplicationState *rs, *next;
64 Error *local_err = NULL;
65
66 QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
67 if (rs->ops && rs->ops->checkpoint) {
68 rs->ops->checkpoint(rs, &local_err);
69 }
70 if (local_err) {
71 error_propagate(errp, local_err);
72 return;
73 }
74 }
75}
76
77void replication_get_error_all(Error **errp)
78{
79 ReplicationState *rs, *next;
80 Error *local_err = NULL;
81
82 QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
83 if (rs->ops && rs->ops->get_error) {
84 rs->ops->get_error(rs, &local_err);
85 }
86 if (local_err) {
87 error_propagate(errp, local_err);
88 return;
89 }
90 }
91}
92
93void replication_stop_all(bool failover, Error **errp)
94{
95 ReplicationState *rs, *next;
96 Error *local_err = NULL;
97
98 QLIST_FOREACH_SAFE(rs, &replication_states, node, next) {
99 if (rs->ops && rs->ops->stop) {
100 rs->ops->stop(rs, failover, &local_err);
101 }
102 if (local_err) {
103 error_propagate(errp, local_err);
104 return;
105 }
106 }
107}