== sanity test 413k: QoS mkdir exclude prefixes ========== 02:15:18 (1783145718)
lmv.lustre-clilmv-ffff9e3fe6a60000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9e3fe6a60000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9e3fe6a60000.qos_exclude_prefixes=_temporary