== sanity test 413k: QoS mkdir exclude prefixes ========== 18:00:07 (1787868007)
lmv.lustre-clilmv-ffff9c596c3be800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9c596c3be800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9c596c3be800.qos_exclude_prefixes=_temporary