== sanity test 413k: QoS mkdir exclude prefixes ========== 23:32:23 (1788751943)
lmv.lustre-clilmv-ffff8a7f86b53800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8a7f86b53800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8a7f86b53800.qos_exclude_prefixes=_temporary