The NBD protocol just relaxed the requirements on NBD_OPT_LIST_META_CONTEXT:
https://github.com/NetworkBlockDevice/nbd/commit/13a4e33a87 Since listing is not stateful (unlike SET_META_CONTEXT), we don't care if a client asks for meta contexts without first requesting structured replies. Well-behaved clients will still ask for structured reply first (if for no other reason than for back-compat to older servers), but that's no reason to avoid this change. Signed-off-by: Eric Blake <ebl...@redhat.com> --- nbd/server.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/nbd/server.c b/nbd/server.c index 1646796a4798..bd635cf8ffd1 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -980,7 +980,7 @@ static int nbd_negotiate_meta_queries(NBDClient *client, size_t i; size_t count = 0; - if (!client->structured_reply) { + if (client->opt == NBD_OPT_SET_META_CONTEXT && !client->structured_reply) { return nbd_opt_invalid(client, errp, "request option '%s' when structured reply " "is not negotiated", -- 2.31.1
