== sanity test 413k: QoS mkdir exclude prefixes ========== 04:57:24 (1787129844)
lmv.lustre-clilmv-ffff9f3f8481c000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9f3f8481c000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9f3f8481c000.qos_exclude_prefixes=_temporary