== sanity test 413k: QoS mkdir exclude prefixes ========== 01:25:20 (1783142720)
lmv.lustre-clilmv-ffff8dff21167800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8dff21167800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8dff21167800.qos_exclude_prefixes=_temporary