== sanity test 413k: QoS mkdir exclude prefixes ========== 21:57:03 (1789437423)
lmv.lustre-clilmv-ffff95d2513be800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff95d2513be800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff95d2513be800.qos_exclude_prefixes=_temporary