== sanity test 413k: QoS mkdir exclude prefixes ========== 19:48:24 (1775864904)
lmv.lustre-clilmv-ffff951150278800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff951150278800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff951150278800.qos_exclude_prefixes=_temporary