== sanity test 413k: QoS mkdir exclude prefixes ========== 10:35:54 (1724769354)
lmv.lustre-clilmv-ffff88012ab10800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012ab10800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012ab10800.qos_exclude_prefixes=_temporary