== sanity test 413k: QoS mkdir exclude prefixes ========== 12:40:34 (1772473234)
lmv.lustre-clilmv-ffff98d4d2f46800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff98d4d2f46800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff98d4d2f46800.qos_exclude_prefixes=_temporary