== sanity test 413k: QoS mkdir exclude prefixes ========== 08:08:10 (1779106090)
lmv.lustre-clilmv-ffff88e2905d1000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88e2905d1000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88e2905d1000.qos_exclude_prefixes=_temporary