== sanity test 413k: QoS mkdir exclude prefixes ========== 20:16:18 (1755044178)
lmv.lustre-clilmv-ffff898b12d0a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff898b12d0a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff898b12d0a800.qos_exclude_prefixes=_temporary