== sanity test 413k: QoS mkdir exclude prefixes ========== 05:10:55 (1787389855)
lmv.lustre-clilmv-ffff91b2a06d8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff91b2a06d8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff91b2a06d8800.qos_exclude_prefixes=_temporary