Signed-off-by: Wen Congyang <we...@cn.fujitsu.com>
Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
Signed-off-by: Gonglei <arei.gong...@huawei.com>
Cc: Luiz Capitulino <lcapitul...@redhat.com>
Cc: Michael Roth <mdr...@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
---
block.c | 40 ++++++++++++++++++++++++++++++++++++++++
include/block/block.h | 5 +++++
include/block/block_int.h | 11 +++++++++++
qapi/block.json | 16 ++++++++++++++++
4 files changed, 72 insertions(+)
diff --git a/block.c b/block.c
index f2f8ae7..82e139b 100644
--- a/block.c
+++ b/block.c
@@ -6229,3 +6229,43 @@ BlockAcctStats *bdrv_get_stats(BlockDriverState *bs)
{
return &bs->stats;
}
+
+void bdrv_start_replication(BlockDriverState *bs, ReplicationMode mode,
+ Error **errp)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_start_replication) {
+ drv->bdrv_start_replication(bs, mode, errp);
+ } else if (bs->file) {
+ bdrv_start_replication(bs->file, mode, errp);
+ } else {
+ error_setg(errp, "this feature or command is not currently supported");
+ }
+}
+
+void bdrv_do_checkpoint(BlockDriverState *bs, Error **errp)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_do_checkpoint) {
+ drv->bdrv_do_checkpoint(bs, errp);
+ } else if (bs->file) {
+ bdrv_do_checkpoint(bs->file, errp);
+ } else {
+ error_setg(errp, "this feature or command is not currently supported");
+ }
+}
+
+void bdrv_stop_replication(BlockDriverState *bs, Error **errp)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_stop_replication) {
+ drv->bdrv_stop_replication(bs, errp);
+ } else if (bs->file) {
+ bdrv_stop_replication(bs->file, errp);
+ } else {
+ error_setg(errp, "this feature or command is not currently supported");
+ }
+}
diff --git a/include/block/block.h b/include/block/block.h
index 4c57d63..2f8f361 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -569,4 +569,9 @@ void bdrv_flush_io_queue(BlockDriverState *bs);
BlockAcctStats *bdrv_get_stats(BlockDriverState *bs);
+void bdrv_start_replication(BlockDriverState *bs, ReplicationMode mode,
+ Error **errp);
+void bdrv_do_checkpoint(BlockDriverState *bs, Error **errp);
+void bdrv_stop_replication(BlockDriverState *bs, Error **errp);
+
#endif
diff --git a/include/block/block_int.h b/include/block/block_int.h
index dccb092..b15d5b8 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -290,6 +290,17 @@ struct BlockDriver {
*/
int (*bdrv_probe_geometry)(BlockDriverState *bs, HDGeometry *geo);
+
+ void (*bdrv_start_replication)(BlockDriverState *bs, ReplicationMode mode,
+ Error **errp);
+ /* Drop Disk buffer when doing checkpoint. */
+ void (*bdrv_do_checkpoint)(BlockDriverState *bs, Error **errp);
+ /*
+ * After failover, we should flush Disk buffer into secondary disk
+ * and stop block replication.
+ */
+ void (*bdrv_stop_replication)(BlockDriverState *bs, Error **errp);
+
QLIST_ENTRY(BlockDriver) list;
};
diff --git a/qapi/block.json b/qapi/block.json
index e313465..7884cc6 100644
--- a/qapi/block.json
+++ b/qapi/block.json
@@ -40,6 +40,22 @@
'data': ['auto', 'none', 'lba', 'large', 'rechs']}
##
+# @COLOMode
+#
+# An enumeration of replication modes.
+#
+# @unprotected: COLO is not started or after failover.
+#
+# @primary: Primary mode, the vm's state will be sent to secondary QEMU.
+#
+# @secondary: Secondary mode, receive the vm's state from primary QEMU.
+#
+# Since: 2.4
+##
+{ 'enum' : 'ReplicationMode',
+ 'data' : ['unprotected', 'primary', 'secondary']}
+
+##
# @BlockdevSnapshotInternal
#
# @device: the name of the device to generate the snapshot from
--
2.1.0
