From d0586db311e8b78732923ce46f149fdf8251a59c Mon Sep 17 00:00:00 2001
From: WangJian <wangjian161@huawei.com>
Date: Wed, 9 Feb 2022 16:10:22 +0800
Subject: [PATCH] block: bugfix: Don't pause vm when NOSPACE EIO happened

When backend disk is FULL and disk IO type is 'dataplane',
QEMU will pause the vm, and this may cause endless-loop in
QEMU main thread if we do the snapshot merge now.

When backend disk is FULL, only reporting an error rather
than pausing the virtual machine.

Signed-off-by: wangjian161 <wangjian161@huawei.com>
---
 blockdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/blockdev.c b/blockdev.c
index 37e3ee6f26..3ce294ec4a 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -556,7 +556,7 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
         qdict_put_str(bs_opts, "driver", buf);
     }
 
-    on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
+    on_write_error = BLOCKDEV_ON_ERROR_REPORT;
     if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
         on_write_error = parse_block_error_action(buf, 0, &error);
         if (error) {
-- 
2.27.0