== sanity test 413k: QoS mkdir exclude prefixes ========== 15:09:07 (1780340947)
lmv.lustre-clilmv-ffff97ae4820f800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97ae4820f800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97ae4820f800.qos_exclude_prefixes=_temporary