== sanity test 413k: QoS mkdir exclude prefixes ========== 02:55:51 (1746168951)
lmv.lustre-clilmv-ffff88012a4f5800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012a4f5800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012a4f5800.qos_exclude_prefixes=_temporary