== sanity test 413k: QoS mkdir exclude prefixes ========== 20:25:15 (1787703915)
lmv.lustre-clilmv-ffff9c67e4b12000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9c67e4b12000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9c67e4b12000.qos_exclude_prefixes=_temporary