== sanity test 413k: QoS mkdir exclude prefixes ========== 11:12:04 (1790953924)
lmv.lustre-clilmv-ffff9548ca280800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9548ca280800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9548ca280800.qos_exclude_prefixes=_temporary