From 7448eb87ee59856aa0f0853f2aa5b803c832fccf Mon Sep 17 00:00:00 2001
From: jiangdongxu <jiangdongxu1@huawei.com>
Date: Thu, 10 Feb 2022 21:37:49 +0800
Subject: [PATCH] block/mirror: fix file-system went to read-only after
 block-mirror

config vm disk with prdm, keep the disk writing data continuously
during block-mirror, the file-system will went to read-only after
block-mirror, fix it.

Signed-off-by: caojinhua <caojinhua1@huawei.com>
Signed-off-by: jiangdongxu <jiangdongxu1@huawei.com>
---
 block/mirror.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/mirror.c b/block/mirror.c
index efec2c7674..b7f0cba9b9 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1640,7 +1640,7 @@ static BlockJob *mirror_start_job(
      * reads on the top, while disabling it in the intermediate nodes, and make
      * the backing chain writable. */
     mirror_top_bs = bdrv_new_open_driver(&bdrv_mirror_top, filter_node_name,
-                                         BDRV_O_RDWR, errp);
+                                         BDRV_O_RDWR | BDRV_O_NOCACHE, errp);
     if (mirror_top_bs == NULL) {
         return NULL;
     }
-- 
2.27.0