== sanity test 413k: QoS mkdir exclude prefixes ========== 11:33:50 (1755099230)
lmv.lustre-clilmv-ffff9b1610746800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9b1610746800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9b1610746800.qos_exclude_prefixes=_temporary