== sanity test 413k: QoS mkdir exclude prefixes ========== 07:43:13 (1769085793)
lmv.lustre-clilmv-ffff97264058b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97264058b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97264058b800.qos_exclude_prefixes=_temporary