== sanity test 413k: QoS mkdir exclude prefixes ========== 01:10:21 (1789449021)
lmv.lustre-clilmv-ffff997e602e7000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff997e602e7000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff997e602e7000.qos_exclude_prefixes=_temporary