== sanity test 413k: QoS mkdir exclude prefixes ========== 01:06:21 (1762495581)
lmv.lustre-clilmv-ffff902351f52800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff902351f52800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff902351f52800.qos_exclude_prefixes=_temporary