== sanity test 413k: QoS mkdir exclude prefixes ========== 03:40:32 (1788939632)
lmv.lustre-clilmv-ffff889760513800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff889760513800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff889760513800.qos_exclude_prefixes=_temporary