On Fri, Feb 05, 2021 at 06:13:12PM +0800, Jiahui Cen wrote:
> @@ -581,6 +582,10 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
>          }
>      }
>  
> +    retry_interval = qemu_opt_get_number(opts, "retry_interval",
> +                                         BLOCK_BACKEND_DEFAULT_RETRY_INTERVAL);
> +    retry_timeout = qemu_opt_get_number(opts, "retry_timeout", 0);

Please use "retry-interval" and "retry-timeout". "-" is used more often
for command-line parameters than "_".