== sanity test 413k: QoS mkdir exclude prefixes ========== 11:36:15 (1713540975)
lmv.lustre-clilmv-ffff88009f794800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88009f794800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88009f794800.qos_exclude_prefixes=_temporary