== sanity test 413k: QoS mkdir exclude prefixes ========== 09:47:09 (1740494829)
lmv.lustre-clilmv-ffff880079a8b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880079a8b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880079a8b800.qos_exclude_prefixes=_temporary