== sanity test 413k: QoS mkdir exclude prefixes ========== 12:42:50 (1729096970)
lmv.lustre-clilmv-ffff8801301d0000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8801301d0000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8801301d0000.qos_exclude_prefixes=_temporary