== sanity test 413k: QoS mkdir exclude prefixes ========== 17:30:12 (1789507812)
lmv.lustre-clilmv-ffff9a0972247800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a0972247800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a0972247800.qos_exclude_prefixes=_temporary