[Qemu-devel] [RFC PATCH 03/14] quorum: ignore 0-length child

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

We connect to NBD server when starting block replication, so
the length is 0 before starting block replication.

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/quorum.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/block/quorum.c b/block/quorum.c
index 5ed1ff8..e6aff5f 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -734,6 +734,11 @@ static int64_t quorum_getlength(BlockDriverState *bs)
         if (value < 0) {
             return value;
         }
+
+        if (!value) {
+            continue;
+        }
+
         if (value != result) {
             return -EIO;
         }
-- 
2.1.0