== sanity test 413k: QoS mkdir exclude prefixes ========== 18:10:02 (1787609402)
lmv.lustre-clilmv-ffff8c9184d1a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8c9184d1a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8c9184d1a800.qos_exclude_prefixes=_temporary