== sanity test 413k: QoS mkdir exclude prefixes ========== 17:35:21 (1788471321)
lmv.lustre-clilmv-ffff892746324000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff892746324000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff892746324000.qos_exclude_prefixes=_temporary