== sanity test 413k: QoS mkdir exclude prefixes ========== 06:16:20 (1788603380)
lmv.lustre-clilmv-ffff88e62794f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88e62794f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88e62794f000.qos_exclude_prefixes=_temporary