== sanity test 413k: QoS mkdir exclude prefixes ========== 06:01:48 (1787392908)
lmv.lustre-clilmv-ffff955c03256000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff955c03256000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff955c03256000.qos_exclude_prefixes=_temporary