== sanity test 413k: QoS mkdir exclude prefixes ========== 22:08:10 (1743214090)
lmv.lustre-clilmv-ffff8800aa8e9800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800aa8e9800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800aa8e9800.qos_exclude_prefixes=_temporary