== sanity test 413k: QoS mkdir exclude prefixes ========== 18:03:08 (1778623388)
lmv.lustre-clilmv-ffff9d1943035800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9d1943035800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9d1943035800.qos_exclude_prefixes=_temporary