== sanity test 413k: QoS mkdir exclude prefixes ========== 10:40:09 (1787755209)
lmv.lustre-clilmv-ffff90a21d9c2000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90a21d9c2000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90a21d9c2000.qos_exclude_prefixes=_temporary