== sanity test 413k: QoS mkdir exclude prefixes ========== 15:58:21 (1780343901)
lmv.lustre-clilmv-ffff93de82ab9800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff93de82ab9800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff93de82ab9800.qos_exclude_prefixes=_temporary