[Qemu-devel] [PATCH COLO v4 12/15] skip nbd_target when starting block replication

[Wen Congyang <wency@cn.fujitsu.com>]

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
---
 block.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/block.c b/block.c
index 54d5b29..a442b5f 100644
--- a/block.c
+++ b/block.c
@@ -4219,6 +4219,10 @@ void bdrv_start_replication(BlockDriverState *bs, ReplicationMode mode,
 {
     BlockDriver *drv = bs->drv;
 
+    if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKING_REFERENCE, NULL)) {
+        return;
+    }
+
     if (drv && drv->bdrv_start_replication) {
         drv->bdrv_start_replication(bs, mode, errp);
     } else if (bs->file) {
@@ -4232,6 +4236,10 @@ void bdrv_do_checkpoint(BlockDriverState *bs, Error **errp)
 {
     BlockDriver *drv = bs->drv;
 
+    if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKING_REFERENCE, NULL)) {
+        return;
+    }
+
     if (drv && drv->bdrv_do_checkpoint) {
         drv->bdrv_do_checkpoint(bs, errp);
     } else if (bs->file) {
@@ -4245,6 +4253,10 @@ void bdrv_stop_replication(BlockDriverState *bs, bool failover, Error **errp)
 {
     BlockDriver *drv = bs->drv;
 
+    if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKING_REFERENCE, NULL)) {
+        return;
+    }
+
     if (drv && drv->bdrv_stop_replication) {
         drv->bdrv_stop_replication(bs, failover, errp);
     } else if (bs->file) {
-- 
2.1.0