== sanity test 413k: QoS mkdir exclude prefixes ========== 07:21:11 (1781004071)
lmv.lustre-clilmv-ffff8e31ec52f800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8e31ec52f800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8e31ec52f800.qos_exclude_prefixes=_temporary