== sanity test 413k: QoS mkdir exclude prefixes ========== 12:39:00 (1783960740)
lmv.lustre-clilmv-ffff954542b37800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff954542b37800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff954542b37800.qos_exclude_prefixes=_temporary