== sanity test 413k: QoS mkdir exclude prefixes ========== 17:44:13 (1787867053)
lmv.lustre-clilmv-ffff9e9243053800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9e9243053800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9e9243053800.qos_exclude_prefixes=_temporary