== sanity test 413k: QoS mkdir exclude prefixes ========== 10:25:14 (1789136714)
lmv.lustre-clilmv-ffff946150e8e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff946150e8e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff946150e8e800.qos_exclude_prefixes=_temporary