If the user specifies image format through driver-specific options, The format probing should be prohibited and the warning message should not be printed.
e.g.: $ qemu-system-x86_64 ... -drive file.file.filename=disk0.raw,file.driver=raw ... WARNING: Image format was not specified for 'disk0.raw' and probing guessed raw. Automatically detecting the format is dangerous for raw images, ... Signed-off-by: Lin Ma <l...@suse.com> --- blockdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/blockdev.c b/blockdev.c index 29d569a24e..ef4c167235 100644 --- a/blockdev.c +++ b/blockdev.c @@ -529,6 +529,8 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, goto early_err; } qdict_put_str(bs_opts, "driver", buf); + } else if (qdict_haskey(bs_opts, "file.driver")) { + qdict_put_str(bs_opts, "driver", qdict_get_str(bs_opts, "file.driver")); } on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; -- 2.15.1