== sanity test 413k: QoS mkdir exclude prefixes ========== 02:56:40 (1739519800)
lmv.lustre-clilmv-ffff880085ada800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880085ada800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880085ada800.qos_exclude_prefixes=_temporary