== sanity test 413k: QoS mkdir exclude prefixes ========== 06:43:53 (1787913833)
lmv.lustre-clilmv-ffff9cb003de3000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9cb003de3000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9cb003de3000.qos_exclude_prefixes=_temporary