== sanity test 413k: QoS mkdir exclude prefixes ========== 15:47:30 (1789069650)
lmv.lustre-clilmv-ffff9fca03fde800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9fca03fde800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9fca03fde800.qos_exclude_prefixes=_temporary