== sanity test 413k: QoS mkdir exclude prefixes ========== 21:38:00 (1789436280)
lmv.lustre-clilmv-ffff99c349ab8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff99c349ab8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff99c349ab8800.qos_exclude_prefixes=_temporary