== sanity test 413k: QoS mkdir exclude prefixes ========== 05:30:10 (1787736610)
lmv.lustre-clilmv-ffff9e959ff42000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9e959ff42000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9e959ff42000.qos_exclude_prefixes=_temporary