== sanity test 413k: QoS mkdir exclude prefixes ========== 04:13:49 (1789028029)
lmv.lustre-clilmv-ffff958c718d1000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff958c718d1000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff958c718d1000.qos_exclude_prefixes=_temporary