== sanity test 413k: QoS mkdir exclude prefixes ========== 11:47:12 (1785944832)
lmv.lustre-clilmv-ffff9f08b321d800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9f08b321d800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9f08b321d800.qos_exclude_prefixes=_temporary