== sanity test 413k: QoS mkdir exclude prefixes ========== 21:10:22 (1787706622)
lmv.lustre-clilmv-ffff88aed3033000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88aed3033000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88aed3033000.qos_exclude_prefixes=_temporary