== sanity test 413k: QoS mkdir exclude prefixes ========== 02:47:05 (1786085225)
lmv.lustre-clilmv-ffff8b7b39f78800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b7b39f78800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b7b39f78800.qos_exclude_prefixes=_temporary