== sanity test 413k: QoS mkdir exclude prefixes ========== 11:02:46 (1749481366)
lmv.lustre-clilmv-ffff8800a7731800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800a7731800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800a7731800.qos_exclude_prefixes=_temporary