== sanity test 413k: QoS mkdir exclude prefixes ========== 19:39:22 (1786837162)
lmv.lustre-clilmv-ffff9fc978e54800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9fc978e54800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9fc978e54800.qos_exclude_prefixes=_temporary