== sanity test 413k: QoS mkdir exclude prefixes ========== 09:20:10 (1788268810)
lmv.lustre-clilmv-ffff9c38276bd800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9c38276bd800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9c38276bd800.qos_exclude_prefixes=_temporary