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-rw-r--r--block/quorum.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/quorum.c b/block/quorum.c
index ed8ce801ee..cc3bc5f4e7 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -1037,6 +1037,7 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
 
 close_exit:
     /* cleanup on error */
+    bdrv_drain_all_begin();
     bdrv_graph_wrlock();
     for (i = 0; i < s->num_children; i++) {
         if (!opened[i]) {
@@ -1045,6 +1046,7 @@ close_exit:
         bdrv_unref_child(bs, s->children[i]);
     }
     bdrv_graph_wrunlock();
+    bdrv_drain_all_end();
     g_free(s->children);
     g_free(opened);
 exit:
@@ -1057,11 +1059,13 @@ static void quorum_close(BlockDriverState *bs)
     BDRVQuorumState *s = bs->opaque;
     int i;
 
+    bdrv_drain_all_begin();
     bdrv_graph_wrlock();
     for (i = 0; i < s->num_children; i++) {
         bdrv_unref_child(bs, s->children[i]);
     }
     bdrv_graph_wrunlock();
+    bdrv_drain_all_end();
 
     g_free(s->children);
 }