== sanity test 413k: QoS mkdir exclude prefixes ========== 15:19:25 (1790882365)
lmv.lustre-clilmv-ffff98fea21af000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff98fea21af000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff98fea21af000.qos_exclude_prefixes=_temporary