== sanity test 413k: QoS mkdir exclude prefixes ========== 07:43:37 (1786535017)
lmv.lustre-clilmv-ffff9f27701a7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9f27701a7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9f27701a7800.qos_exclude_prefixes=_temporary