== sanity test 413k: QoS mkdir exclude prefixes ========== 23:10:42 (1775877042)
lmv.lustre-clilmv-ffff953f60106000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff953f60106000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff953f60106000.qos_exclude_prefixes=_temporary