== sanity test 413k: QoS mkdir exclude prefixes ========== 09:21:26 (1786195286)
lmv.lustre-clilmv-ffff90df09535800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90df09535800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90df09535800.qos_exclude_prefixes=_temporary