== sanity test 413k: QoS mkdir exclude prefixes ========== 19:45:20 (1773618320)
lmv.lustre-clilmv-ffff8e8418133800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8e8418133800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8e8418133800.qos_exclude_prefixes=_temporary