== sanity test 413k: QoS mkdir exclude prefixes ========== 03:19:34 (1786173574)
lmv.lustre-clilmv-ffff963f42e5a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff963f42e5a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff963f42e5a800.qos_exclude_prefixes=_temporary