== sanity test 413k: QoS mkdir exclude prefixes ========== 20:03:55 (1788912235)
lmv.lustre-clilmv-ffff90006d075000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90006d075000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90006d075000.qos_exclude_prefixes=_temporary