== sanity test 413k: QoS mkdir exclude prefixes ========== 20:21:05 (1787703665)
lmv.lustre-clilmv-ffff9957e0776000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9957e0776000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9957e0776000.qos_exclude_prefixes=_temporary